WO2015143695A1 - 确定下行控制信道重复次数的方法及装置 - Google Patents

确定下行控制信道重复次数的方法及装置 Download PDF

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Publication number
WO2015143695A1
WO2015143695A1 PCT/CN2014/074254 CN2014074254W WO2015143695A1 WO 2015143695 A1 WO2015143695 A1 WO 2015143695A1 CN 2014074254 W CN2014074254 W CN 2014074254W WO 2015143695 A1 WO2015143695 A1 WO 2015143695A1
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WIPO (PCT)
Prior art keywords
downlink control
control channel
repetitions
channel
control information
Prior art date
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Ceased
Application number
PCT/CN2014/074254
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English (en)
French (fr)
Inventor
栗忠峰
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Huawei Technologies Co Ltd
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Huawei Technologies Co Ltd
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Filing date
Publication date
Application filed by Huawei Technologies Co Ltd filed Critical Huawei Technologies Co Ltd
Priority to CN201480000815.8A priority Critical patent/CN105210433B/zh
Priority to JP2017501440A priority patent/JP6368028B2/ja
Priority to EP14887442.3A priority patent/EP3125622B1/en
Priority to KR1020167030382A priority patent/KR101852706B1/ko
Priority to PCT/CN2014/074254 priority patent/WO2015143695A1/zh
Publication of WO2015143695A1 publication Critical patent/WO2015143695A1/zh
Priority to US15/277,788 priority patent/US10439764B2/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00Arrangements for detecting or preventing errors in the information received
    • H04L1/08Arrangements for detecting or preventing errors in the information received by repeating transmission, e.g. Verdan system
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00Arrangements for detecting or preventing errors in the information received
    • H04L1/004Arrangements for detecting or preventing errors in the information received by using forward error control
    • H04L1/0072Error control for data other than payload data, e.g. control data
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W4/00Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/70Services for machine-to-machine communication [M2M] or machine type communication [MTC]
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W72/00Local resource management
    • H04W72/20Control channels or signalling for resource management
    • H04W72/23Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00Arrangements for detecting or preventing errors in the information received
    • H04L1/12Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/18Automatic repetition systems, e.g. Van Duuren systems
    • H04L1/1829Arrangements specially adapted for the receiver end

Definitions

  • the present invention relates to the field of wireless communications, and in particular, to a method and apparatus for determining the number of repetitions of a downlink control channel. Background technique
  • M2M Machine to Machine
  • M2M Machine to Machine
  • M2M can be used for scenes such as meter reading, geological survey, environmental monitoring, tracking, etc.
  • the M2M can be deployed not only in an outdoor open space, but also in a basement where the building is blocked or the penetration loss is relatively large.
  • the M2M is deployed in a basement or the like where the building is occluded or the penetration loss is relatively large, the network coverage is poor. Therefore, the channel receiving energy can be enhanced by repeatedly transmitting the channel, thereby improving the network coverage of the M2M.
  • the channel includes a control channel and a data channel, and the control channel includes an uplink control channel and a downlink control channel.
  • the downlink control channel is configured to carry downlink control information that is sent to the UE (User Equipment), and the UE can communicate with the network side according to the downlink control information.
  • the UE When the downlink control channel is repeatedly sent, the UE needs to determine the number of repetitions of the downlink control channel, and obtain the downlink control information carried in the repeatedly transmitted downlink control channel according to the repetition number of the downlink control channel.
  • the network side sends a downlink control channel to the UE according to a preset repetition level.
  • the UE receives the downlink control channel sent by the network side, determines the repetition level by blindly detecting the repeatedly transmitted downlink control channel according to a preset repetition level, and further determines the repetition number.
  • the network side can switch the repetition level at any time to send a downlink control channel to the UE.
  • the UE also uses the first repetition level to detect the downlink control channel that is repeatedly transmitted. If the detection succeeds, the number of repetitions detected by the UE is actually sent by the network side. The number of repetitions is different. Since the time interval between the data channel and the downlink control channel is fixed, after the detection succeeds, the UE cannot successfully receive the data channel, resulting in waste of resources. When the data channel cannot be received, the UE feeds back an ACK/NACK (Acknowledge / Nacknowledge) message to the network side.
  • ACK/NACK Acknowledge / Nacknowledge
  • the UE needs to occupy the uplink control channel when feeding back the ACK/NACK message to the network side.
  • the network does not allocate an uplink control channel to the UE, so the UE may cause interference to other UE uplink control channels. And when the UE cannot successfully receive the data channel, the UE will continue to detect the data channel, thus increasing the power consumption of the UE. Summary of the invention
  • the method and device for determining the number of repetitions of the downlink control channel are provided in the embodiment of the present invention.
  • the technical solution is as follows:
  • the first aspect provides an apparatus for determining a number of repetitions of a downlink control channel, where the apparatus includes: a first acquiring module, configured to acquire processing information corresponding to a repetition quantity of a downlink control channel; and a sending module, configured to perform, according to the processing Sending the downlink control channel to the user equipment
  • the UE the downlink control channel is configured to carry the processed downlink control information, and the UE determines the number of repetitions of the downlink control channel according to the processing information.
  • the first acquiring module includes:
  • the first acquiring unit is configured to obtain a corresponding mask according to the number of repetitions of the downlink control channel.
  • the sending module includes:
  • a serial unit configured to serially connect a cyclic redundancy check code CRC bit corresponding to the downlink control information carried by the downlink control channel to the downlink control information, to obtain a bit sequence
  • the first scrambling unit is configured to scramble the CRC bit corresponding to the downlink control information carried by the downlink control channel according to the mask and the radio network temporary identifier RNTI of the UE, to obtain the processed downlink control information;
  • the first sending unit is configured to carry the processed downlink control information in the downlink control channel, and send the downlink control channel to the UE.
  • the device further includes:
  • a second acquiring module configured to acquire an antenna selection mask when antenna selection is configured
  • the first scrambling unit is specifically configured to:
  • the CRC bit corresponding to the downlink control information carried by the downlink control channel is scrambled according to the mask, the antenna selection mask, and the RNTI, to obtain the processed downlink control information.
  • the module includes:
  • a second acquiring unit configured to acquire a scrambling initialization parameter corresponding to the repetition quantity of the downlink control channel
  • a third acquiring unit configured to acquire a time slot number where the downlink control channel is currently located and an identity ID value obtained by the network side;
  • an initializing unit configured to initialize the sequence generator according to the scrambling initialization parameter, the slot number where the downlink control channel is currently located, and the ID value obtained by the network side, so that the sequence generator generates a force sequence.
  • the device further includes:
  • the sending module includes:
  • a second scrambling unit configured to scramble the rate matching bit according to the scrambling sequence generated by the sequence generator, to obtain the processed downlink control information
  • the second sending unit is configured to carry the processed downlink control information in the downlink control channel, and send the downlink control channel to the UE.
  • the device further includes:
  • the sending module includes:
  • a multiplying unit configured to multiply the scrambling sequence corresponding to the number of repetitions by the modulation symbol by bit by bit, to obtain processed downlink control information
  • the third sending unit is configured to carry the processed downlink control information in the downlink control channel, and send the downlink control channel to the UE.
  • the first acquiring module includes:
  • a fourth acquiring unit configured to acquire an indication bit of a repetition quantity of the downlink control channel
  • a setting unit configured to set the indication bit according to the repetition quantity of the downlink control channel, To indicate the number of repetitions.
  • the indication bit is a new bit or an existing bit.
  • the first acquiring module includes:
  • a fifth acquiring unit configured to acquire a frequency domain resource corresponding to the repetition quantity, where the frequency domain resource is a candidate location or a search space of the control channel.
  • the sending module includes:
  • a bearer unit configured to carry the downlink control information in the downlink control channel, and carry the downlink control channel on the frequency domain resource;
  • the sending module includes:
  • a fifth sending unit configured to send a configuration signaling message to the UE, to enable the UE to determine the number of repetitions after a preset effective time according to the configuration signaling message;
  • the sixth sending unit is configured to carry the downlink control information in the downlink control channel according to the repetition quantity, and send the downlink control channel to the UE after the preset effective time arrives.
  • the configuration signaling message is a radio resource control RRC message or a media access control element MAC CE Message.
  • the first acquiring module includes:
  • a sixth acquiring unit configured to acquire, according to the repetition quantity of the downlink control channel, a subframe set corresponding to the repetition quantity.
  • the sending module includes:
  • a seventh sending unit configured to: in the subframe set corresponding to the repetition quantity, carry downlink control information in the downlink control channel, and send the downlink control channel to the UE.
  • the multiple subframes corresponding to the multiple repetitions include at least one non-overlapping subframe.
  • the device further includes: a module, configured to configure a correspondence between the number of repetitions of the downlink control channel and the number of repetitions of the data channel, and send a correspondence between the number of repetitions of the downlink control channel and the number of repetitions of the data channel to the UE Or,
  • the preset module is configured to preset a correspondence between the number of repetitions of the downlink control channel and the number of repetitions of the data channel.
  • the apparatus further includes:
  • a third acquiring module configured to acquire, according to a repetition quantity of the downlink control channel, a repetition quantity of a corresponding data channel from a correspondence between a repetition quantity of the downlink control channel and a repetition quantity of the data channel;
  • a first sending or receiving module configured to send a downlink data channel or receive an uplink data channel according to the repetition quantity of the data channel.
  • the second aspect provides an apparatus for determining a repetition quantity of a downlink control channel, where the apparatus includes: a first receiving module, configured to receive a downlink control channel, where the downlink control channel is used to carry the processed downlink control information, where The downlink control information is sent by the network side according to the processing information corresponding to the repetition quantity of the downlink control channel;
  • a determining module configured to determine, according to the downlink control channel, a repetition quantity of the downlink control channel.
  • the determining module includes:
  • a descrambling unit configured to perform descrambling on the processed downlink control information carried by the downlink control channel according to the scrambling sequence corresponding to the repetition number
  • a check unit configured to perform, according to the cyclic redundancy check CRC bit corresponding to the downlink control information carried by the downlink control channel, verify the descrambled downlink control information
  • a first determining unit configured to determine the number of repetitions as the downlink control if the verification is successful The number of repetitions of the channel.
  • the descrambling unit includes:
  • Obtaining a subunit configured to obtain a CRC bit after the processing is performed from the processed downlink control information carried by the downlink control channel;
  • a first descrambling sub-unit configured to: according to the mask corresponding to the repetition quantity and the radio network temporary identifier RNTI of the user equipment UE, the CRC bits scrambled in the processed downlink control information carried by the downlink control channel Perform descrambling.
  • the descrambling unit when the antenna selection is configured, includes:
  • a second descrambling subunit configured to mask according to the repetition number and an antenna selection mask
  • the RNTI performs descrambling on the scrambled CRC bit in the processed downlink control information carried by the downlink control channel.
  • the descrambling unit includes:
  • an initialization subunit configured to initialize the sequence generator according to the scrambling initialization parameter corresponding to the repetition quantity, the slot number currently in the downlink control channel, and the identity ID value acquired by the UE, to generate the sequence Generating a scrambling sequence
  • a third descrambling unit configured to perform descrambling on the processed downlink control information carried by the downlink control channel according to the scrambling sequence generated by the sequence generator.
  • the descrambling unit includes:
  • a multiplication sub-unit configured to multiply a symbol corresponding to the processed downlink control information carried by the downlink control channel by a scrambling sequence corresponding to the repetition quantity, to obtain descrambled downlink control information.
  • the determining module includes:
  • a seventh acquiring unit configured to acquire an indication bit in the downlink control information carried in the downlink channel
  • a second determining unit configured to determine, according to the indication bit, a repetition quantity of the downlink control channel.
  • the indication bit is a new bit or an existing bit.
  • the determining module includes:
  • the first detecting unit is configured to detect, according to the frequency domain resource corresponding to the repetition quantity, the downlink control channel, where the frequency domain resource is the a candidate location or search space of the downlink control channel;
  • a third determining unit configured to determine the number of repetitions as the number of repetitions of the downlink control channel if the detection is successful.
  • the determining module includes:
  • a receiving unit configured to receive a configuration signaling message
  • a fourth determining unit configured to determine, by the number of repetitions of the configuration signaling message, the number of repetitions of the downlink control channel after the preset effective time.
  • the configuration signaling message is a radio resource control RRC message or a media access control element MAC CE message.
  • the determining module includes:
  • an eighth acquiring unit configured to acquire, according to the subframe set corresponding to the repetition quantity, a corresponding downlink control channel, for any one of the multiple repetition times that has been stored;
  • a second detecting unit configured to detect the acquired downlink control channel
  • a fifth determining unit configured to determine the number of repetitions as the number of repetitions of the downlink control channel if the detection is successful.
  • the multiple subframes corresponding to the multiple repetitions include at least one non-overlapping subframe .
  • the device further includes: a fourth acquiring module, configured to use, according to the repetition quantity of the downlink control channel, from the stored downlink control channel Obtaining the number of repetitions of the data channel in the correspondence between the number of repetitions and the number of repetitions of the data channel;
  • a second sending or receiving module configured to receive a downlink data channel or send an uplink data channel according to the repetition quantity of the data channel.
  • the device further includes:
  • the second receiving module is configured to receive a correspondence between the number of repetitions of the downlink control channel and the number of repetitions of the data channel.
  • a third aspect provides a method for determining a repetition quantity of a downlink control channel, where the method includes: acquiring processing information corresponding to a repetition quantity of a downlink control channel;
  • the processing information Transmitting, by the processing information, the downlink control channel to the user equipment UE, where the downlink control channel is used to carry the processed downlink control information, so that the UE determines the repetition of the downlink control channel according to the processing information. frequency.
  • the processing information that is used to obtain the number of repetitions of the downlink control channel includes:
  • the sending, by the processing information, the downlink control channel to the user equipment UE includes:
  • the cyclic redundancy check code CRC bit corresponding to the downlink control information carried by the downlink control channel is scrambled according to the mask and the radio network temporary identifier of the UE, to obtain the processed downlink control information;
  • the processed downlink control information is obtained;
  • the method further includes:
  • the CRC bit corresponding to the downlink control information carried by the downlink control channel is scrambled according to the mask and the radio network temporary identifier RNTI of the UE, and the processed downlink control information is obtained, including:
  • the CRC bit corresponding to the downlink control information carried by the downlink control channel is scrambled according to the mask, the antenna selection mask, and the RNTI, to obtain the processed downlink control information.
  • the processing information that is used to obtain the number of repetitions of the downlink control channel includes:
  • the method before the sending the downlink control channel to the user equipment UE according to the processing information, the method further includes:
  • CRC bits are connected in series after the downlink control information to obtain a bit sequence
  • Rate matching processing is performed on the coded block to obtain a rate matching bit.
  • the downlink control channel is sent to the user equipment UE, including:
  • the processed downlink control information is carried in the downlink control channel, and the downlink control channel is sent to the UE.
  • the method further includes:
  • the rate matching bit is scrambled and modulated to obtain a modulation symbol
  • the downlink control channel is sent to the user equipment according to the processing information.
  • UE including:
  • the processed downlink control information is carried in the downlink control channel, and the downlink control channel is sent to the UE.
  • the processing information that is used to obtain the number of repetitions of the downlink control channel includes:
  • the indication bit is set to indicate the number of repetitions.
  • the indication bit is a new bit or an existing bit.
  • the processing information that is used to obtain the number of repetitions of the downlink control channel includes:
  • the frequency domain resource is a candidate location or a search space of the control channel.
  • the sending, by the processing information, the downlink control channel to the user equipment UE including :
  • the sending the downlink control channel to the user equipment UE according to the processing information includes:
  • the downlink control information is carried in the downlink control channel according to the number of repetitions, and after the preset effective time arrives, the downlink control channel is sent to the UE.
  • the configuration signaling message is a radio resource control RRC message or a media access control element MAC CE Message.
  • the processing information that is used to obtain the number of repetitions of the downlink control channel includes:
  • the sending, by the processing information, the downlink control channel to the user equipment UE includes :
  • the downlink control information is carried in the downlink control channel, and the downlink control channel is sent to the UE in the subframe set corresponding to the number of repetitions.
  • the multiple corresponding number of repetitions At least one non-overlapping subframe is included in the frame set.
  • the method further includes: configuring And the corresponding relationship between the number of repetitions of the downlink control channel and the number of repetitions of the data channel, and the correspondence between the number of repetitions of the downlink control channel and the number of repetitions of the data channel is sent to the UE; or
  • the method further includes:
  • the fourth aspect provides a method for determining a repetition quantity of a downlink control channel, where the method includes: receiving a downlink control channel, where the downlink control channel is used to carry the processed downlink control information, and the downlink control information is a network side. Transmitted according to processing information corresponding to the number of repetitions of the downlink control channel;
  • the determining, by the downlink control channel, the number of repetitions of the downlink control channel includes:
  • a scrambling sequence For any of the multiple repetitions that have been stored, corresponding to the number of repetitions a scrambling sequence, performing descrambling on the processed downlink control information carried by the downlink control channel; performing downlink control on the descrambling according to the cyclic redundancy check CRC bit corresponding to the downlink control information carried by the downlink control channel Information is verified;
  • the number of repetitions is determined as the number of repetitions of the downlink control channel.
  • the processing of the downlink control channel bearer according to the scrambling sequence corresponding to the repetition quantity The downlink control information is descrambled, including:
  • the mask corresponding to the repetition quantity and the user equipment UE The radio network temporary identifier RNTI performs descrambling on the scrambled CRC bits in the processed downlink control information carried by the downlink control channel, including:
  • the downlink control information is descrambled, including:
  • sequence generator initializing the sequence generator, so that the sequence generator generates a scrambling sequence, according to the scrambling initialization parameter corresponding to the number of repetitions, the slot number in which the downlink control channel is currently located, and the identity ID value acquired by the UE;
  • the downlink control information is descrambled, including:
  • the symbol corresponding to the processed downlink control information carried by the downlink control channel is multiplied by the scrambling sequence corresponding to the repetition number to obtain descrambled downlink control information.
  • the determining, by the downlink control channel, the number of repetitions of the downlink control channel includes: Obtaining an indication bit in downlink control information carried in the downlink channel;
  • the indication bit is a new bit or an existing bit.
  • the determining, by the downlink control channel, the number of repetitions of the downlink control channel includes:
  • the number of repetitions is determined as the number of repetitions of the downlink control channel.
  • the eighth possible implementation of the fourth aspect in the ninth possible implementation manner of the foregoing fourth aspect, when different repetition times are located in different search spaces, there is an offset between adjacent search spaces. .
  • the determining, by the downlink control channel, the number of repetitions of the downlink control channel includes:
  • the number of repetitions carried in the configuration signaling message is determined as the number of repetitions of the downlink control channel after the preset effective time.
  • the configuration signaling message is a radio resource control RRC message or a media access control element MAC CE message.
  • the determining, by the downlink control channel, the number of repetitions of the downlink control channel includes:
  • the number of repetitions is determined as the number of repetitions of the downlink control channel.
  • the multiple subframes corresponding to the multiple repetitions include at least one non-overlapping subframe .
  • the method further includes: repeating the number of repetitions of the stored downlink control channel from the data channel according to the repetition quantity of the downlink control channel Obtaining the number of repetitions of the data channel in the correspondence between the times;
  • the method further includes:
  • the processing information corresponding to the repetition quantity of the downlink control channel is obtained, and the downlink control channel is sent to the UE according to the processing information.
  • the UE determines the number of repetitions of the downlink control channel according to the received downlink control channel. Therefore, the number of repetitions sent by the network side is the same as the number of repetitions detected by the UE.
  • the UE can successfully receive the data channel. When the UE successfully receives the data channel, the UE does not cause interference to the uplink control channel of other UEs when the ACK/NACK message is sent to the network side according to the allocated uplink control resource, and the UE succeeds. After receiving the data channel, the data channel will not be received again, thereby reducing the power consumption and resource loss of the UE.
  • FIG. 1 is a schematic structural diagram of an apparatus for determining a repetition number of a downlink control channel according to Embodiment 1 of the present invention
  • FIG. 2 is a schematic structural diagram of an apparatus for determining a repetition quantity of a downlink control channel according to Embodiment 2 of the present invention
  • FIG. 3 is a flow chart of a method for determining a repetition number of a downlink control channel according to Embodiment 3 of the present invention
  • FIG. 4 is a flowchart of a method for determining a repetition quantity of a downlink control channel according to Embodiment 4 of the present invention
  • FIG. 5 is a flowchart of a method for determining a repetition quantity of a downlink control channel according to Embodiment 5 of the present invention
  • FIG. 4 is a flowchart of a method for determining a repetition quantity of a downlink control channel according to Embodiment 4 of the present invention
  • FIG. 5 is a flowchart of a method for determining a repetition quantity of a downlink control channel according to Embodiment 5 of the present invention
  • FIG. 6 is a flow chart of a method for determining a repetition number of a downlink control channel according to Embodiment 6 of the present invention.
  • FIG. 7 is a flow chart of a method for determining a repetition number of a downlink control channel according to Embodiment 7 of the present invention.
  • FIG. 8 is a flow chart of a method for determining a repetition number of a downlink control channel according to Embodiment 8 of the present invention.
  • FIG. 9 is a schematic diagram of a frequency domain resource corresponding to a repetition number according to Embodiment 8 of the present invention
  • FIG. 10 is a flow chart of a method for determining a repetition frequency of a downlink control channel according to Embodiment 9 of the present invention
  • FIG. 11 is a flow chart of a method for determining a repetition number of a downlink control channel according to Embodiment 10 of the present invention.
  • FIG. 12 is a schematic diagram of a subframe set corresponding to a repetition number according to Embodiment 10 of the present invention
  • FIG. 13 is a schematic diagram of another subframe set corresponding to the repetition number provided by Embodiment 10 of the present invention
  • FIG. 15 is a schematic structural diagram of an apparatus for determining a repetition quantity of a downlink control channel according to Embodiment 12 of the present invention. detailed description
  • FIG. 1 is a schematic structural diagram of an apparatus for determining a repetition quantity of a downlink control channel according to an embodiment of the present invention.
  • the apparatus includes:
  • the first obtaining module 101 is configured to acquire processing information corresponding to the number of repetitions of the downlink control channel
  • the sending module 102 is configured to send the downlink control channel to the user equipment according to the processing information.
  • the UE, the downlink control channel is configured to carry the processed downlink control information, and the UE determines the number of repetitions of the downlink control channel according to the processing information.
  • the first obtaining module 101 includes:
  • the first acquiring unit is configured to obtain a corresponding mask according to the number of repetitions of the downlink control channel.
  • the sending module 102 includes:
  • a serial unit configured to serially connect the CRC bit corresponding to the downlink control information carried by the downlink control channel to the downlink control information, to obtain a bit sequence
  • the first scrambling unit is configured to scramble the CRC bit corresponding to the downlink control information carried by the downlink control channel according to the mask and the radio network temporary identifier RNTI of the UE, to obtain the processed downlink control information;
  • the first sending unit is configured to carry the processed downlink control information in the downlink control channel, and send the downlink control channel to the UE.
  • the device further includes:
  • a second acquiring module configured to acquire an antenna selection mask when the antenna selection is configured; correspondingly, the first scrambling unit is specifically configured to:
  • the CRC bits corresponding to the downlink control information carried by the downlink control channel are scrambled according to the mask, the antenna selection mask, and the RNTI, to obtain the processed downlink control information.
  • the first obtaining module 101 includes:
  • a second acquiring unit configured to acquire a scrambling initialization parameter corresponding to the repetition quantity of the downlink control channel
  • a third acquiring unit configured to acquire a time slot number where the downlink control channel is currently located and an identity ID value obtained by the network side;
  • an initialization unit configured to initialize the sequence generator according to the scrambling initialization parameter, the slot number where the downlink control channel is currently located, and the ID value obtained by the network side, so that the sequence generator generates a scrambling sequence.
  • the device further includes:
  • the sending module 102 includes:
  • a second scrambling unit configured to scramble the rate matching bit according to the scrambling sequence generated by the sequence generator, to obtain the processed downlink control information
  • a second sending unit configured to carry the processed downlink control information in the downlink control channel, where And transmitting the downlink control channel to the UE.
  • the device further includes:
  • the sending module 102 includes:
  • a multiplying unit configured to multiply the modulation symbol by a scrambling sequence corresponding to the number of repetitions, to obtain processed downlink control information
  • the third sending unit is configured to carry the processed downlink control information in the downlink control channel, and send the downlink control channel to the UE.
  • the first obtaining module 101 includes:
  • a fourth acquiring unit configured to obtain an indication bit of the number of repetitions of the downlink control channel
  • a setting unit configured to set the indication bit according to the number of repetitions of the downlink control channel, to indicate the number of repetitions.
  • the indication bit is a new bit or an existing bit.
  • the first obtaining module 101 includes:
  • a fifth acquiring unit configured to acquire a frequency domain resource corresponding to the repetition quantity, where the frequency domain resource is a candidate location or a search space of the control channel.
  • the sending module 102 includes:
  • a bearer unit configured to carry the downlink control information in the downlink control channel, and carry the downlink control channel on the frequency domain resource;
  • the sending module 102 includes:
  • a fifth sending unit configured to send a configuration signaling message to the UE, so that the UE determines the number of repetitions after the preset effective time according to the configuration signaling message;
  • the sixth sending unit is configured to carry the downlink control information in the downlink control channel according to the repetition quantity, and send the downlink control channel to the UE after the preset effective time arrives.
  • the configuration signaling message is a radio resource control RRC message or a media access control element MAC CE message.
  • the first obtaining module 101 includes:
  • a sixth acquiring unit configured to acquire, according to the repetition quantity of the downlink control channel, a subframe set corresponding to the repetition quantity.
  • the sending module 102 includes: The seventh sending unit is configured to: carry the downlink control information in the downlink control channel, and send the downlink control channel to the UE in the subframe set corresponding to the number of repetitions.
  • the subframe set corresponding to the multiple repetition times includes at least one non-overlapping subframe.
  • the device further includes:
  • a configuration module configured to: configure a correspondence between the number of repetitions of the downlink control channel and the number of repetitions of the data channel, and send a correspondence between the number of repetitions of the downlink control channel and the number of repetitions of the data channel to the UE; or ,
  • the preset module is configured to preset a correspondence between the number of repetitions of the downlink control channel and the number of repetitions of the data channel.
  • the device further includes:
  • a third obtaining module configured to acquire, according to a repetition quantity of the downlink control channel, a repetition quantity of a corresponding data channel from a correspondence between a repetition quantity of the downlink control channel and a repetition quantity of the data channel;
  • a first sending or receiving module configured to send a downlink data channel or receive an uplink data channel according to the repetition quantity of the data channel.
  • the processing information corresponding to the repetition quantity of the downlink control channel is obtained, and the downlink control channel is sent to the UE according to the processing information.
  • the UE determines the number of repetitions of the downlink control channel according to the received downlink control channel. Therefore, the number of repetitions sent by the network side is the same as the number of repetitions detected by the UE.
  • the UE can successfully receive the data channel. When the UE successfully receives the data channel, the UE does not cause interference to the uplink control channel of other UEs when the ACK/NACK message is sent to the network side according to the allocated uplink control resource, and the UE succeeds. After receiving the data channel, the data channel will not be received again, thereby reducing the power consumption and resource loss of the UE.
  • Embodiment 2 Embodiment 2
  • FIG. 2 is a schematic structural diagram of an apparatus for determining a repetition quantity of a downlink control channel according to an embodiment of the present invention.
  • the apparatus includes:
  • the first receiving module 201 is configured to receive a downlink control channel, where the downlink control channel is used to carry the processed downlink control information, where the downlink control information is sent by the network side according to the processing information corresponding to the number of repetitions of the downlink control channel;
  • the determining module 202 is configured to determine, according to the downlink control channel, a repetition quantity of the downlink control channel.
  • the determining module 202 includes:
  • a descrambling unit configured to descramble the processed downlink control information carried by the downlink control channel according to the scrambling sequence corresponding to the repeated number of repetitions
  • a check unit configured to perform, according to the cyclic redundancy check CRC bit corresponding to the downlink control information carried by the downlink control channel, verify the descrambled downlink control information
  • the first determining unit is configured to determine the number of repetitions as the number of repetitions of the downlink control channel if the verification is successful.
  • the descrambling unit includes:
  • an obtaining sub-unit configured to obtain, after the processed downlink control information carried by the downlink control channel, a CRC bit that is added to the downlink control information
  • a first descrambling sub-unit configured to solve a scrambled CRC bit in the processed downlink control information carried by the downlink control channel according to the mask corresponding to the repetition quantity and the radio network temporary identifier RNTI of the user equipment UE Disturb.
  • the descrambling unit includes:
  • a second descrambling subunit configured to mask according to the repetition number and an antenna selection mask
  • the RNTI descrambles the scrambled CRC bits in the processed downlink control information carried by the downlink control channel.
  • the descrambling unit includes:
  • an initialization subunit configured to initialize the sequence generator according to the scrambling initialization parameter corresponding to the repetition quantity, the slot number where the downlink control channel is currently located, and the identity ID value acquired by the UE, so that the sequence generator generates the scrambling Sequence
  • the third descrambling unit is configured to descramble the processed downlink control information carried by the downlink control channel according to the scrambling sequence generated by the sequence generator.
  • the descrambling unit comprises:
  • the multiplying sub-unit is configured to multiply the symbol corresponding to the processed downlink control information carried by the downlink control channel by the scrambling sequence corresponding to the number of repetitions to obtain the descrambled downlink control information.
  • the determining module 202 includes:
  • a seventh acquiring unit configured to acquire an indication bit in downlink control information carried in the downlink channel;
  • a second determining unit configured to determine, according to the indication bit, a repetition quantity of the downlink control channel.
  • the indication bit is a new bit or an existing bit.
  • the determining module 202 includes:
  • a first detecting unit configured to detect, according to the frequency domain resource corresponding to the number of repetitions, the downlink control channel, where the frequency domain resource is the downlink control channel, Candidate location or search space;
  • a third determining unit configured to determine the number of repetitions as the number of repetitions of the downlink control channel if the detection is successful.
  • the determining module 202 includes:
  • a receiving unit configured to receive a configuration signaling message
  • the fourth determining unit is configured to determine the number of repetitions carried in the configuration signaling message as the number of repetitions of the downlink control channel after the preset effective time.
  • the configuration signaling message is a radio resource control RRC message or a media access control element MAC CE message.
  • the determining module 202 includes:
  • An eighth obtaining unit configured to acquire, according to the subframe set corresponding to the repetition quantity, a corresponding downlink control channel, for any one of the multiple repetition times that has been stored;
  • a second detecting unit configured to detect the acquired downlink control channel
  • a fifth determining unit configured to determine the number of repetitions as the number of repetitions of the downlink control channel if the detection is successful.
  • the subframe set corresponding to the multiple repetition times includes at least one non-overlapping subframe. Further, the device further includes:
  • a fourth acquiring module configured to obtain, according to the repetition quantity of the downlink control channel, the number of repetitions of the data channel from a correspondence between the number of repetitions of the stored downlink control channel and the number of repetitions of the data channel;
  • a second sending or receiving module configured to receive a downlink data channel or send an uplink data channel according to the repetition quantity of the data channel.
  • the device further includes:
  • a second receiving module configured to receive the repetition quantity of the downlink control channel and the repetition of the data channel The correspondence between the numbers.
  • the processing information corresponding to the repetition quantity of the downlink control channel is obtained, and the downlink control channel is sent to the UE according to the processing information.
  • the UE determines the number of repetitions of the downlink control channel according to the received downlink control channel. Therefore, the number of repetitions sent by the network side is the same as the number of repetitions detected by the UE.
  • the UE can successfully receive the data channel. When the UE successfully receives the data channel, the UE does not cause interference to the uplink control channel of other UEs when the ACK/NACK message is sent to the network side according to the allocated uplink control resource, and the UE succeeds. After receiving the data channel, the data channel will not be received again, thereby reducing the power consumption and resource loss of the UE.
  • Embodiment 3 Embodiment 3
  • FIG. 3 is a flow chart of a method for determining the number of repetitions of a downlink control channel according to an embodiment of the present invention. Referring to FIG. 3, the method includes:
  • Step 301 Obtain processing information corresponding to the repetition quantity of the downlink control channel.
  • Step 302 Send the downlink control channel to the user equipment UE according to the processing information, where the downlink control channel is used to carry the processed downlink control information, so that the UE determines the number of repetitions of the downlink control channel according to the processing information.
  • the processing information corresponding to the number of repetitions of the downlink control channel is obtained, including:
  • the downlink control channel is sent to the user equipment UE according to the processing information, including: concatenating the cyclic redundancy check code CRC bit corresponding to the downlink control information carried by the downlink control channel in the downlink control information, Obtaining a bit sequence;
  • the CRC bit corresponding to the downlink control information carried by the downlink control channel is scrambled according to the mask and the radio network temporary identifier of the UE, to obtain the processed downlink control information;
  • the processed downlink control information is carried in the downlink control channel, and the downlink control channel is sent to the UE.
  • the method further includes:
  • the CRC bit corresponding to the downlink control information carried by the downlink control channel is scrambled according to the mask and the radio network temporary identifier RNTI of the UE, and the processed downlink control information is obtained, including:
  • Downlink control information carried by the downlink control channel according to the mask, the antenna selection mask, and the RNTI The corresponding CRC bits are scrambled to obtain processed downlink control information.
  • the processing information corresponding to the number of repetitions of the downlink control channel is obtained, including:
  • the sequence generator is caused to generate a scrambling sequence.
  • the method before the sending the downlink control channel to the user equipment UE, according to the processing information, the method further includes:
  • CRC bits are connected in series after the downlink control information to obtain a bit sequence
  • the coded block is subjected to rate matching processing to obtain a rate matching bit.
  • the downlink control channel is sent to the user equipment UE according to the processing information, including: scrambling the rate matching bit according to the scrambling sequence generated by the sequence generator, to obtain the processed downlink control information;
  • the processed downlink control information is carried in the downlink control channel, and the downlink control channel is sent to the UE.
  • the method further includes:
  • the rate matching bit is scrambled and modulated to obtain a modulation symbol
  • the downlink control channel is sent to the user equipment UE according to the processing information, including: multiplying the modulation symbol and the scrambling sequence corresponding to the repetition number by bit by bit, to obtain processed downlink control information;
  • the processed downlink control information is carried in the downlink control channel, and the downlink control channel is sent to the UE.
  • the processing information corresponding to the number of repetitions of the downlink control channel is obtained, including:
  • the indication bit is set according to the number of repetitions of the downlink control channel to indicate the number of repetitions.
  • the indication bit is a new bit or an existing bit.
  • the processing information corresponding to the number of repetitions of the downlink control channel is obtained, including:
  • the frequency domain resource is a candidate location or a search space of the control channel.
  • the downlink control channel is sent to the user equipment UE according to the processing information, including: Carrying the downlink control information in the downlink control channel, and carrying the downlink control channel on the frequency domain resource;
  • the sending the downlink control channel to the user equipment UE according to the processing information including: sending a configuration signaling message to the UE, and determining, by the UE, the number of repetitions after the preset effective time according to the configuration signaling message;
  • the downlink control information is carried in the downlink control channel according to the number of repetitions, and after the preset generation time arrives, the downlink control channel is sent to the UE.
  • the configuration signaling message is a radio resource control RRC message or a media access control element MAC CE message.
  • the processing information corresponding to the number of repetitions of the downlink control channel is obtained, including:
  • the downlink control channel is sent to the user equipment UE according to the processing information, and: the downlink control information is carried in the downlink control channel, and the downlink control is performed in the subframe set corresponding to the repetition quantity The channel is sent to the UE.
  • the subframe set corresponding to the multiple repetition times includes at least one non-overlapping subframe.
  • the method further includes:
  • the correspondence between the number of repetitions of the downlink control channel and the number of repetitions of the data channel is preset. Further, the method further includes:
  • the processing information corresponding to the repetition quantity of the downlink control channel is obtained, and the downlink control channel is sent to the UE according to the processing information.
  • the UE determines the number of repetitions of the downlink control channel according to the received downlink control channel. Therefore, the number of repetitions sent by the network side to the number of repetitions detected by the UE is the same.
  • the UE can successfully receive the data channel. When the UE successfully receives the data channel, the UE does not cause interference to the uplink control channel of other UEs when the ACK/NACK message is sent to the network side according to the allocated uplink control resource, and the UE succeeds. After receiving the data channel, it will not be Receiving the data channel, thereby reducing the power consumption and resource loss of the UE.
  • Embodiment 4 Embodiment 4
  • FIG. 4 is a flow chart of a method for determining the number of repetitions of a downlink control channel according to an embodiment of the present invention. Referring to FIG. 4, the method includes:
  • Step 401 Receive a downlink control channel, where the downlink control channel is used to carry the processed downlink control information, where the downlink control information is sent by the network side according to the processing information corresponding to the repetition quantity of the downlink control channel;
  • Step 402 Determine, according to the downlink control channel, a repetition quantity of the downlink control channel.
  • determining, according to the downlink control channel, the number of repetitions of the downlink control channel including: performing, for any repetition of the plurality of repeated repetition times, the downlink control according to the scrambling sequence corresponding to the repetition number
  • the processed downlink control information carried by the channel is descrambled;
  • the number of repetitions is determined as the number of repetitions of the downlink control channel.
  • performing descrambling on the processed downlink control information carried by the downlink control channel according to the scrambling sequence corresponding to the repetition quantity including:
  • the scrambled CRC bits in the processed downlink control information carried by the downlink control channel are descrambled according to the mask corresponding to the repetition number and the radio network temporary identifier RNTI of the user equipment UE.
  • the mask corresponding to the repetition number and the radio network temporary identifier RNTI of the user equipment UE perform the scrambled CRC bits in the processed downlink control information carried by the downlink control channel.
  • De-scrambling including:
  • the scrambled CRC bits in the processed downlink control information carried by the downlink control channel are descrambled according to the mask corresponding to the repetition number and the antenna selection mask and the RNTI.
  • performing descrambling on the processed downlink control information carried by the downlink control channel according to the scrambling sequence corresponding to the repetition quantity including:
  • the line control information is descrambled.
  • performing descrambling on the processed downlink control information carried by the downlink control channel according to the scrambling sequence corresponding to the repetition quantity including:
  • the symbol corresponding to the processed downlink control information carried by the downlink control channel is multiplied by the scrambling sequence corresponding to the number of repetitions to obtain descrambled downlink control information.
  • determining, according to the downlink control channel, the number of repetitions of the downlink control channel including: acquiring an indication bit in downlink control information carried in the downlink channel;
  • the indication bit is a new bit or an existing bit.
  • the downlink control is performed according to the frequency domain resource corresponding to the repetition quantity for any repetition number of the multiple repetition times that have been stored.
  • the channel is detected, and the frequency domain resource is a candidate location or a search space of the downlink control channel;
  • the number of repetitions is determined as the number of repetitions of the downlink control channel. Wherein, when different repetition times are located in different search spaces, there is an offset between adjacent search spaces.
  • determining, according to the downlink control channel, the number of repetitions of the downlink control channel including: receiving a configuration signaling message;
  • the number of repetitions carried in the configuration signaling message is determined as the number of repetitions of the downlink control channel after the preset effective time.
  • the configuration signaling message is a radio resource control RRC message or a media access control element MAC CE message.
  • determining the number of repetitions of the downlink control channel according to the downlink control channel including: obtaining, for any one of the multiple repetition times that has been stored, obtaining a corresponding downlink according to the subframe set corresponding to the repetition quantity Control channel
  • the number of repetitions is determined as the number of repetitions of the downlink control channel.
  • the subframe set corresponding to the multiple repetition times includes at least one non-overlapping subframe. Further, the method further includes:
  • the method further includes:
  • Corresponding relationship between the number of repetitions of the downlink control channel and the number of repetitions of the data channel is received.
  • the processing information corresponding to the repetition quantity of the downlink control channel is obtained, and the downlink control channel is sent to the UE according to the processing information.
  • the UE determines the number of repetitions of the downlink control channel according to the received downlink control channel. Therefore, the number of repetitions sent by the network side is the same as the number of repetitions detected by the UE.
  • the UE can successfully receive the data channel.
  • Embodiment 5 When the UE successfully receives the data channel, the UE does not cause interference to the uplink control channel of other UEs when the ACK/NACK message is sent to the network side according to the allocated uplink control resource, and the UE succeeds. After receiving the data channel, the data channel will not be received again, thereby reducing the power consumption and resource loss of the UE.
  • Embodiment 5 When the UE successfully receives the data channel, the UE does not cause interference to the uplink control channel of other UEs when the ACK/NACK message is sent to the network side according to the allocated uplink control resource, and the UE succeeds. After receiving the data channel, the data channel will not be received again, thereby reducing the power consumption and resource loss of the UE.
  • FIG. 5 is a flowchart of a method for determining a repetition quantity of a downlink control channel according to an embodiment of the present invention. Referring to FIG. 5, the method includes:
  • Step 501 The network side acquires processing information corresponding to the repetition quantity according to the repetition quantity of the downlink control channel.
  • the processing information is a scrambling sequence, and different repetition times correspond to different scrambling sequences.
  • the method for the network side to obtain the processing information corresponding to the number of repetitions according to the number of repetitions of the downlink control channel may be implemented according to any one of the following two methods, including:
  • the first type and the network side configure a corresponding mask for the number of repetitions according to the number of repetitions of the downlink control channel, and determine the mask as the processing information corresponding to the number of repetitions.
  • the second type the network side obtains a corresponding mask from the preset relationship between the preset number of repetitions and the mask according to the number of repetitions of the downlink control channel, and determines the mask as the processing information corresponding to the number of repetitions.
  • the network side needs to send a scrambling sequence configured for the number of repetitions to the UE before the network side sends the downlink control channel to the UE, where the scrambling sequence corresponding to the number of repetitions is configured on the network side.
  • the UE receives the scrambling sequence and stores it.
  • the mask corresponding to the number of repetitions may be as follows Selected in the bit string.
  • the bit string ⁇ . ,. ,. ,. ,. ,. ,. ,. ,. ,. ,. ,. ,. ,. ,. ,. ,. ,. 1) is a sequence of scrambling on the CRC (Cyclic Redundancy Check) of the downlink control information formatO to instruct the UE to perform antenna selection, that is, ⁇ 0, 0, 0, 0, 0, 0, 0 , 0,0,0,0,0,0,0,0,0,0> corresponds to UE antenna port 0,
  • Bit string ⁇ , ⁇ , ⁇ , ⁇ , ⁇ , ⁇ , ⁇ , ⁇ > is a sequence of scrambling on the CRC of the BCH (Broadcast Channel) transport block , instructs the network side to send antenna configuration information.
  • the scrambling sequence is a mask, an RNTI (Radio Network Temporary Identity), and an antenna selection mask, in order to make the antenna selection indication and the downlink control channel repetition indication independent of each other, the mask of the selected downlink control channel is The last bit is 0 to avoid the influence of the downlink control channel on the antenna selection indicating bit state judgment. That is, the mask corresponding to the number of repetitions can be selected from the bit strings shown below.
  • the network side may also be downlinked.
  • the number of repetitions of the control channel is obtained from the correspondence between the number of repetitions that have been stored and the repetition level.
  • the processing information corresponding to the repetition level is obtained according to the obtained repetition level, and the obtained processing information is determined as the processing information corresponding to the repetition number.
  • the correspondence between the number of repetitions and the repetition level is set in advance by the network side.
  • the UE may also set a correspondence between the number of repetitions and the repetition level in advance.
  • the network side may also configure a correspondence between the repetition quantity and the repetition level, and send the correspondence between the repetition quantity and the repetition level to the UE.
  • the downlink control channel may be a PDCCH (Physical Downlink)
  • the Control Channel Physical Downlink Control Channel
  • EPDCCH Enhanced Physical Downlink Control Channel
  • Each repetition level corresponds to a repetition number.
  • the downlink control channel includes three repetition levels, that is, repetition level 1, repetition level 2, and repetition level 3.
  • the repetition level 1 corresponds to 5 repetitions
  • the repetition level 2 corresponds to 10 repetitions
  • the repetition level 3 corresponds to 20 repetitions.
  • Step 502 The network side scrambles the downlink control information according to the processing information, and obtains the processed downlink control information.
  • the specific operation of the network side to perform the scrambling of the downlink control information according to the processing information may be: the network side acquires the CRC bit corresponding to the downlink control information, and connects the CRC bit in the downlink. After the control information, a bit sequence is obtained. The network side acquires the RNTI of the UE, and scrambles the CRC bit in the bit sequence according to the mask and the RNTI of the UE to obtain the processed downlink control information.
  • the network side performs scrambling on the CRC bit in the bit sequence according to the mask and the RNTI of the UE.
  • the specific operation may be: the network side may use the RNTI according to the mask and the UE according to the following formula (1).
  • the CRC bits in the frame are scrambled to obtain the scrambled CRC bits.
  • c k is the scrambled CRC bit, which is a CRC bit, x mti , k is RNTI, 3 ⁇ 4 ⁇ is a mask, k is a bit number, and mod is a modulo operation.
  • the network side performs the scrambling on the downlink control information according to the processing information, and the specific operation of the obtained downlink control information may be: acquiring the downlink control by the network side
  • the CRC bit corresponding to the information, the RNTI of the UE, and the antenna selection mask are connected in series to the downlink control information to obtain a bit sequence.
  • the CRC bits in the bit sequence are scrambled according to the mask and the antenna selection mask and the RNTI of the UE, to obtain processed downlink control information.
  • the specific operation of the network side to scramble the CRC bit in the bit sequence according to the mask and the antenna selection mask and the RNTI of the UE may be: the network side according to the mask and the antenna selection mask and the RNTI of the UE, according to The CRC bits in the bit sequence are scrambled as shown in the following equation (2) to obtain the scrambled CRC bits.
  • Ck (P k + x m, + x R E p,k + x A S ,k ) mod 2 (2)
  • c AW is an antenna selection mask.
  • the method for obtaining the CRC bit may be specifically: connecting k zeros in the downlink control information, dividing the downlink control information after the k consecutive 0s by the bits corresponding to the generated polynomial, and obtaining a corresponding remainder, and determining the remainder as the CRC Bit, the division is a binary division.
  • k may be 16 in the embodiment of the present invention.
  • a 16-bit generator polynomial can be obtained according to the following formula (3):
  • g CRC16 (Z)) is the generator polynomial
  • D represents that the binary number of the corresponding power in the polynomial is 1.
  • the bit corresponding to the generator polynomial is 10001000000100001.
  • Step 503 The network side carries the processed downlink control information in the downlink control channel, and sends the downlink control channel to the UE.
  • the processed downlink control information is obtained after the network side performs a series of processing on the downlink control information.
  • the series of processing can be used for CRC addition, CRC scrambling, coding, rate matching, scrambling, modulation, layer mapping, precoding, resource mapping, and OFDM (Orthogonal Frequency Division Multiplexing) symbol generation. Partial processing or full processing.
  • the processed downlink control information may be transmitted after being carried in the downlink control channel. For the receiving end, it is the inverse process described above, and will not be described again.
  • the series of processing further includes multiplexing processing.
  • the network side when the network side repeatedly transmits the downlink control channel, the network side performs scrambling on the downlink control information corresponding to the downlink control channel according to the foregoing steps, to obtain the processed downlink control information, and The processed downlink control information is carried in the downlink control channel, and the downlink control channel is sent to the UE.
  • Step 504 When the UE receives the downlink control channel, the UE performs processing on the downlink control channel according to the processing information corresponding to the repetition quantity for any repetition number of the multiple repetition times that have been stored.
  • the downlink control information is descrambled.
  • the specific operation of the UE to descramble the processed downlink control information carried by the downlink control channel according to the processing information corresponding to the number of repetitions may be: the UE acquires the RNTI of the UE, And obtaining the mask corresponding to the number of repetitions, according to the mask corresponding to the repetition number and the RNTI of the UE, and scrambling the processed downlink control information according to the following formula (4)
  • the latter CRC bits are descrambled to obtain the CRC bits.
  • the specific operation of the UE to descramble the processed downlink control information carried by the downlink control channel according to the processing information corresponding to the repetition quantity may be:
  • the mask corresponding to the number of repetitions, the RNTI of the UE, and the antenna selection mask are scrambled according to the mask corresponding to the repetition number and the antenna mask and the RNTI of the UE according to the following formula (5).
  • the latter CRC bits are descrambled to obtain the CRC bits.
  • Step 505 The UE verifies the descrambled downlink control information according to the CRC bit corresponding to the downlink control information carried by the downlink control channel.
  • the UE performs descrambling on the CRC bit to obtain a bit sequence including the downlink control information and the CRC bit, and according to the bit corresponding to the generator polynomial corresponding to the CRC bit corresponding to the downlink control information carried by the downlink control channel, the bit is The sequence is binary divided to obtain the corresponding remainder. If the remainder is 0, it is determined that the verification is successful, otherwise, the verification fails.
  • Step 506 If the verification is successful, the UE determines the number of repetitions as the number of repetitions of the downlink control channel.
  • the number of repetitions of the plurality of repetitions that have been stored is performed according to the steps of the above steps 504-506 to determine the number of repetitions of the downlink control channel. Further, after the UE determines the number of repetitions of the downlink control channel, the UE may further perform a correspondence between the number of repetitions of the stored downlink control channel and the number of repetitions of the data channel according to the number of repetitions of the downlink control channel. The number of repetitions of the corresponding data channel is obtained. The UE may receive the downlink data channel or transmit the uplink data channel according to the number of repetitions of the data channel.
  • the corresponding relationship between the number of repetitions of the downlink control channel and the number of repetitions of the data channel may be a correspondence between the number of repetitions of the downlink control channel transmitted by the network side and the number of repetitions of the data channel.
  • the correspondence between the number of repetitions of the stored downlink control channel and the number of repetitions of the data channel may also be preset by the UE.
  • the network side may also obtain the number of repetitions of the data channel according to the order of the number of repetitions of the downlink control channel. That is, the number of repetitions of the downlink control channel is sorted in advance, and the number of repetitions of the data channel is sorted, and the number of repetitions of the downlink control channel corresponds to the order of the number of repetitions of the data channel.
  • the downlink control channel is carried according to the scrambling sequence corresponding to the repetition number
  • the CRC bits corresponding to the downlink control information are scrambled to obtain the processed downlink control information.
  • the processed downlink control information is carried in the downlink control channel and sent to the UE.
  • the UE descrambles the processed downlink control information according to the scrambling sequence corresponding to the number of repetitions, and performs the check on the descrambled downlink control information. If the verification succeeds, the number of repetitions is determined as the downlink control channel.
  • the number of repetitions is such that the number of repetitions sent by the network side to the number of repetitions detected by the UE is the same.
  • the UE can successfully receive the data channel.
  • the UE When the UE successfully receives the data channel, the UE does not cause interference to the uplink control channel of other UEs when the ACK/NACK message is sent to the network side according to the allocated uplink control resource, and the UE succeeds. After receiving the data channel, the data channel will not be received again, thereby reducing the power consumption and resource loss of the UE.
  • Embodiment 6 When the UE successfully receives the data channel, the UE does not cause interference to the uplink control channel of other UEs when the ACK/NACK message is sent to the network side according to the allocated uplink control resource, and the UE succeeds. After receiving the data channel, the data channel will not be received again, thereby reducing the power consumption and resource loss of the UE.
  • FIG. 6 is a flowchart of a method for determining a repetition quantity of a downlink control channel according to an embodiment of the present invention. Referring to FIG. 6, the method includes:
  • Step 601 The network side acquires processing information corresponding to the repetition quantity according to the repetition quantity of the downlink control channel.
  • the network side may obtain the processing information corresponding to the repetition quantity according to any one of the following three methods, including:
  • the first type the network side configures the corresponding scrambling initialization parameter for the repetition quantity according to the repetition quantity of the downlink control channel, and obtains the current slot number of the downlink control channel and the ID (identity, ID) acquired by the network side. a value, according to the scrambling initialization parameter, the current slot number of the downlink control channel, and the ID value obtained by the network side, initializing the sequence generator, causing the sequence generator to generate a scrambling sequence, and generating the sequence generator
  • the scrambling sequence is determined as processing information corresponding to the number of repetitions.
  • the second type the network side obtains the corresponding scrambling initialization parameter from the correspondence between the preset repetition number and the scrambling initialization parameter according to the repetition number of the downlink control channel. Obtaining the current slot number of the downlink control channel and the ID value obtained by the network side, and initializing sequence generation according to the obtained scrambling initialization parameter, the current slot number of the downlink control channel, and the ID value obtained by the network side. And causing the sequence generator to generate a scrambling sequence, and determining the scrambling sequence generated by the sequence generator as the processing information corresponding to the number of repetitions.
  • the ID value when the downlink control channel is a PDCCH, the ID value is an ID value of a cell where the UE is located, and when the downlink control channel is an EPDCCH, the ID value is the UE. A specific ID value.
  • the third type the network side configures the corresponding scrambling initialization parameter for the repetition quantity according to the repetition quantity of the downlink control channel, and determines the scrambling initialization parameter as the processing information corresponding to the repetition quantity.
  • the network side determines the scrambling initialization parameter as the processing information corresponding to the repetition quantity, acquiring the current slot number of the downlink control channel and the ID value acquired by the network side, according to the obtained scrambling initialization parameter, The slot number currently in the downlink control channel and the ID value obtained by the network side initialize the sequence generator, so that the sequence generator generates a scrambling sequence.
  • the network side may further obtain a corresponding repetition level from a correspondence between the stored repetition number and the repetition level according to the repetition quantity of the downlink control channel.
  • the processing information corresponding to the repetition level is obtained according to the obtained repetition level, and the obtained processing information is determined as the processing information corresponding to the repetition number.
  • the downlink control channel may be a PDCCH or an EPDCCH.
  • Each repetition level corresponds to a repetition number.
  • the downlink control channel includes three repetition levels, that is, repetition level 1, repetition level 2, and repetition level 3.
  • the repetition level 1 corresponds to 5 repetitions
  • the repetition level 2 corresponds to 10 repetitions
  • the repetition level 3 corresponds to 20 repetitions.
  • the scrambling sequence may be a Gold sequence
  • the Gold sequence may be generated by using a Gold sequence generator.
  • the network side may initialize the sequence generator according to the scrambling initialization parameter, the current slot number of the downlink control channel, and the ID value acquired by the network side, so that the sequence generator generates a scrambling sequence, and the scrambling initialization parameter includes The parameter corresponding to the number of repetitions.
  • the network side may generate an initial value according to the following scrambling initialization parameters: a repetition level corresponding to the repetition quantity, a time slot number in which the downlink control channel is currently located, and a cell in which the UE is located. ID value. Calculate the scrambling initialization value of the Gold sequence generator according to the following formula (1).
  • c mit is the scrambling initialization value of the sequence generator
  • r is the repetition level corresponding to the repetition number
  • A is the location of the UE.
  • the initial value of the initialization parameter may be generated as follows: the repetition level corresponding to the repetition quantity, and the current time of the downlink control channel The slot number and the ID value of the cell where the UE is located. Calculate the scrambling initialization value of the Gold sequence generator according to the following formula (2),
  • c mit is the scrambling initialization value of the sequence generator
  • r is the repetition level corresponding to the repetition number, which is the time slot number of the downlink control channel
  • D m CCH is the The parameter ID value of the scrambling initialization configured on the network side.
  • the slot number may be in the range of 0 to 503. In the embodiment of the present invention, the value of the ID may be in the range of 0-503.
  • the network side may send the repetition number or the corresponding scrambling initialization parameter to the UE, and the UE may use the 4th initialization parameter to generate the addition sequence 4, or may be initialized according to the addition 4 After the parameter initializes the sequence generator, the generated scrambling sequence is sent to the UE.
  • Step 602 The network side performs scrambling on the downlink control information according to the processing information to obtain the processed downlink control information.
  • the network side acquires the CRC bits corresponding to the downlink control information, and serially acquires the CRC bits after the downlink control information to obtain a bit sequence.
  • the bit sequence is channel coded to obtain a coded block.
  • Rate matching processing is performed on the coded block to obtain a rate matching bit.
  • the rate matching bits are scrambled according to the scrambling sequence generated by the sequence generator to obtain the processed downlink control information.
  • the rate matching bit is scrambled to obtain the processed downlink control information, including: multiplexing the rate matching bits, obtaining multiplexing bits, and scrambling the multiplexing bits.
  • the processed downlink control information is obtained.
  • the method for obtaining the CRC bit may be specifically: connecting k zeros in the downlink control information, dividing the downlink control information after the k consecutive 0s by the bits corresponding to the generated polynomial, and obtaining a corresponding remainder, and determining the remainder as the CRC Bit, the division can be a binary division or a modulo di division.
  • k may be 16 in the embodiment of the present invention.
  • a 16-bit generator polynomial can be obtained according to the following formula (3):
  • g CRC16 (Z)) is the generator polynomial
  • D represents that the binary number of the corresponding power in the polynomial is 1.
  • the bit corresponding to the generator polynomial is 10001000000100001.
  • the specific operation of the processed downlink control information may be performed according to the scrambling sequence generated by the sequence generator, and the specific operation of the processed downlink control information may be:
  • the sequence generator generates a scrambling sequence Gold sequence, which is the following c(n).
  • the Gold sequence c(n) is synthesized by two m-sequences, and the m-sequences generated by the two m-sequence generators are xl and x2, respectively, as shown in the following formula (4):
  • x 1 (?i + 31) (x 1 (n + 3) + x 1 (?i)) mod2 ( 4 )
  • x 2 (?i + 31) (x 2 (?i + 3) + x 2 ⁇ n + 2) + x 2 ⁇ n + ⁇ ) + x 2 (?i)) mod2
  • n 0, 1, ..., M PN - 1
  • PN is the length of the scrambling sequence Gold sequence, corresponding to the length of the bit block to be scrambled, such as the rate matching bit block length M bit .
  • the initialization sequence generator may be performed in each subframe of the PDCCH or EPDCCH that is repeatedly transmitted.
  • 0 is the scrambled bit block or the i-th bit in the bit block before modulation
  • c is the i-th bit in the scrambling sequence generated by the sequence generator.
  • the initialization sequence generator may also be performed in the start subframe of the PDCCH or the EPDCCH that is repeatedly transmitted, and the scrambling initialization value of the repeated subframe after the start subframe is the same as the initial initialization value of the start subframe. That is, the plus ⁇ special sequence is the same.
  • the scrambling sequence may be generated without using the sequence generator, and the network side may directly configure a corresponding scrambling sequence for the number of repetitions of the downlink control channel.
  • the network side directly configures the corresponding scrambling sequence for the number of repetitions of the downlink control channel
  • the network side performs the scrambling of the downlink control information according to the processing information, and the specific operation of the obtained downlink control information may be:
  • the CRC bits are concatenated after the downlink control information to obtain a bit sequence.
  • the bit sequence is channel coded to obtain a coded block.
  • Rate matching processing is performed on the coded block to obtain a rate matching bit.
  • the rate matching bit is scrambled and modulated, and the modulated downlink control information is multiplied by the scrambling sequence corresponding to the repetition number to obtain the processed downlink control information.
  • the scrambling sequence corresponding to the number of repetitions is The symbols of the downlink control information and the symbols of the scrambling sequence corresponding to the number of repetitions are multiplied bit by bit to obtain processed downlink control information.
  • the scrambling sequence configured by the network side for the repetition number may be a periodic extension of the sequence.
  • the network side when the network side directly configures the scrambling sequence for the repetition quantity, the network side may perform scrambling on each subframe of the repeated transmission downlink control channel by using a value of the scrambling sequence. . This value is applied to the scrambling of each symbol in the sub-frame, that is, the product operation for each symbol in the sub-frame.
  • the number of subframes in the subframe group corresponding to the number of repetitions is 4, and the scrambling sequence of the subframes in the subframe group is ⁇ 1, 1, 1, 1 ⁇ , and each of the scrambling sequences
  • the value corresponds to a scrambling value in a sub-frame, and the scrambling value is multiplied with each symbol in the sub-frame to implement the addition of the sub-frame.
  • the number of subframes in the subframe group corresponding to the number of repetitions is 8, and the scrambling sequence of the subframes in the subframe group is ⁇ 1, -1, 1, -1, 1, -1, 1, -1 ⁇ , each value in the scrambling sequence corresponds to a scrambling value in a sub-frame, and the scrambling value is multiplied with each symbol in the sub-frame to implement adding 4 to the sub-frame.
  • the number of subframes in the subframe group corresponding to the number of repetitions is 16, and the sequence of the subframes in the subframe group is ⁇ -1, 1, -1, 1, -1, 1, - 1, 1, -1, 1, -1, 1, -1, 1 ⁇ , each value in the scrambling sequence corresponds to a scrambling value within one subframe, the scrambling value and each of the sub-frames
  • the symbols are subjected to a product operation to achieve scrambling of the sub-frame.
  • Step 603 The processed downlink control information is carried in the downlink control channel, and the downlink control channel is sent to the UE.
  • the processed downlink control information is obtained after the network side performs a series of processing on the downlink control information.
  • the series of processing can be used for CRC addition, CRC scrambling, coding, rate matching, scrambling, modulation, layer mapping, precoding, resource mapping, and OFDM (Orthogonal Frequency Division Multiplex) symbol generation. Partial processing or full processing.
  • the processed downlink control information may be transmitted after being carried in the downlink control channel. For the receiving end, it is the inverse process described above, and will not be described again.
  • the series of processing further includes multiplexing processing.
  • the network side when the network side repeatedly transmits the downlink control channel, the network side performs scrambling on the downlink control information corresponding to the downlink control channel according to the foregoing steps, to obtain the processed downlink control information, and The processed downlink control information is carried in the downlink control channel, and the downlink control channel is sent to the UE.
  • Step 604 When the UE receives the downlink control channel, for multiple times that have been stored The number of repetitions of the number, the UE descrambles the processed downlink control information carried by the downlink control channel according to the processing information corresponding to the repetition number.
  • the UE may descramble the processed downlink control information carried by the downlink control channel according to the received scrambling sequence.
  • the network side does not send the scrambling sequence corresponding to the number of repetitions to the UE, the specific operation of the UE to descramble the processed downlink control information carried by the downlink control channel according to the processing information corresponding to the repetition quantity may be The UE initializes the sequence generator according to the scrambling initialization parameter corresponding to the repetition number, so that the sequence generator generates a scrambling sequence.
  • the processed downlink control information carried by the downlink control channel is descrambled according to the scrambling sequence.
  • the method for the UE to obtain the corresponding scrambling initialization parameter according to the number of repetitions may be any one of the following two situations, including:
  • the first type after receiving the number of repetitions sent by the network side and the scrambling initialization parameter, storing the correspondence between the number of repetitions and the scrambling initialization parameter, according to the number of repetitions, from the stored number of repetitions and the scrambling initialization parameter
  • the corresponding scrambling initialization parameters are obtained in the corresponding relationship.
  • the scrambling initialization parameter corresponding to the number of repetitions is calculated according to the method in the above step 601.
  • the specific operation of the UE to descramble the processed downlink control information carried by the downlink control channel according to the scrambling sequence may be:
  • the sequence generator generates a scrambling sequence Gold sequence, which is the following c(n).
  • the Gold sequence c(n) is synthesized by two m sequences, and the m sequences generated by the two m-sequence generators are xl and x2, respectively, as shown in the following formula (6).
  • x x (n + 31) ⁇ x x (n + 3) + x 1 (?i)) mod2 ( 6 )
  • x 2 (n + 31) (x 2 (?i + 3) + x 2 ⁇ n + 2) + x 2 ⁇ n + ⁇ ) + x 2 (?i)) mod2
  • PN is the length of the scrambling sequence Gold sequence, corresponding to the length of the bit block to be scrambled, such as the rate matching bit block length M bit .
  • the scrambling initialization parameters include: r corresponding to the repetition number or repetition level, the slot number, the cell ID
  • the scrambling initialization parameters include: r corresponding to the repetition number or repetition level, the slot number, the cell ID.
  • the initialization sequence generator It can be performed in each subframe of the PDCCH or EPDCCH that is repeatedly transmitted.
  • the initialization sequence generator may also be performed in the start subframe of the PDCCH or the EPDCCH that is repeatedly transmitted, and the scrambling initialization value of the repeated subframe after the start subframe is the same as the scrambling initialization value of the start subframe. That is, the scrambling sequence is the same.
  • the network side processes the downlink control channel according to the scrambling sequence.
  • the specific operation of the downlink control information for descrambling may be: the network side multiplies the symbol corresponding to the processed downlink control information carried by the downlink control channel by the scrambling sequence corresponding to the repetition quantity, and obtains the modulated Downstream control information.
  • Step 605 The UE verifies the descrambled downlink control information according to the CRC bit corresponding to the downlink control information carried by the downlink control channel.
  • the UE when the descrambled downlink control information is a rate matching bit, the UE performs rate de-matching on the rate matching bit to obtain a coded block.
  • the coded block is decoded to obtain a bit sequence.
  • the bit sequence is binary-divided according to the bit corresponding to the generator polynomial corresponding to the CRC bit corresponding to the downlink control information carried by the downlink control channel, to obtain a corresponding remainder. If the remainder is 0, it is determined that the verification is successful, otherwise, the verification fails.
  • the UE demodulates the modulated downlink control information to obtain a rate matching bit.
  • the UE performs rate de-matching on the rate matching bits to obtain a coded block.
  • the coded block is decoded to obtain a bit sequence.
  • the bit sequence is binary divided according to the bit corresponding to the generator polynomial corresponding to the CRC bit corresponding to the downlink control information carried by the downlink control channel, to obtain a corresponding remainder. If the remainder is 0, it is determined that the verification is successful, otherwise, the verification fails.
  • Step 606 If the verification is successful, the UE determines the number of repetitions as the number of repetitions of the downlink control channel.
  • the number of repetitions of the plurality of repetitions that have been stored is performed according to the steps of steps 604-606 above to determine the number of repetitions of the downlink control channel. Preferably,.
  • the UE may further perform a correspondence between the number of repetitions of the stored downlink control channel and the number of repetitions of the data channel according to the number of repetitions of the downlink control channel.
  • the number of repetitions of the corresponding data channel is obtained.
  • the UE can Receiving a downlink data channel or transmitting an uplink data channel according to the number of repetitions of the data channel.
  • the corresponding relationship between the number of repetitions of the downlink control channel and the number of repetitions of the data channel may be a correspondence between the number of repetitions of the downlink control channel transmitted by the network side and the number of repetitions of the data channel.
  • the correspondence between the number of repetitions of the stored downlink control channel and the number of repetitions of the data channel may also be preset by the UE.
  • the network side may also obtain the number of repetitions of the data channel according to the order of the number of repetitions of the downlink control channel. That is, the number of repetitions of the downlink control channel is sorted in advance, and the number of repetitions of the data channel is sorted, and the number of repetitions of the downlink control channel corresponds to the order of the number of repetitions of the data channel.
  • the CRC bits are serially connected to the downlink control information to obtain a bit sequence, and the bit sequence is channel-encoded to obtain a coded block, and the coded block is subjected to rate matching processing to obtain a rate matching bit.
  • the rate matching bit is scrambled according to the scrambling sequence corresponding to the repetition number, and the processed downlink control information is obtained.
  • the processed downlink control information is carried in the downlink control channel and sent to the UE.
  • the UE descrambles the processed downlink control information according to the scrambling sequence corresponding to the number of repetitions, and performs the check on the descrambled downlink control information. If the verification succeeds, the number of repetitions is determined as the downlink control channel.
  • the number of repetitions is such that the number of repetitions sent by the network side is the same as the number of repetitions detected by the UE.
  • the UE can successfully receive the data channel. When the UE successfully receives the data channel, the UE does not cause interference to the uplink control channel of other UEs when the ACK/NACK message is sent to the network side according to the allocated uplink control resource, and the UE succeeds. After receiving the data channel, the data channel will not be received again, thereby reducing the power consumption and resource loss of the UE.
  • FIG. 7 is a flow chart of a method for determining the number of repetitions of a downlink control channel according to an embodiment of the present invention. Referring to FIG. 7, the method includes:
  • Step 701 The network side acquires an indication bit of the repetition number.
  • the indication bit may be a new bit or an existing bit.
  • the existing bit may be a carrier indication bit, a redundancy version indication bit, an uplink index bit, a downlink allocation bit, a channel state information request bit, or a power control command bit.
  • the carrier indication bit is 3 bits
  • the redundancy version indication bit is 2 bits
  • the uplink index bit is 2 bits
  • the downlink allocation bit is 2 bits
  • the channel state information request bit is 1 bit or 2 bits
  • the power control command bit is 2 bits.
  • the indication bit is 2 bits
  • the maximum number of repetitions that the indication bit can indicate is 4 times.
  • the indication bit is 3 bits, the number of repetitions that the indication bit can indicate the maximum is 8 times.
  • indicator bits can indicate a limited number of repetitions.
  • the indication bit may also be used to indicate a repetition level.
  • a repetition level is determined according to the indication bit, and a corresponding repetition level is obtained from a correspondence between the stored number of repetitions and the repetition level according to the repetition level. For example, when the indication bit is 2 bits, the indication bit can indicate a maximum repetition level of 4, and each repetition level corresponds to a repetition number. When the indication bit is 3 bits, the indication bit can indicate a maximum repetition level of 8, and each repetition level corresponds to one repetition number.
  • Step 702 The network side sets the indication bit according to the repetition quantity of the downlink control channel, to indicate the number of repetitions.
  • the indication bit when the indication bit indicates the number of repetitions, the indication bit is set according to the number of repetitions.
  • the network side obtains a corresponding repetition level from the correspondence between the stored number of repetitions and the repetition level according to the number of repetitions of the downlink control channel, and sets the indication according to the acquired repetition level. Bit.
  • Step 703 The network side carries the downlink control information carrying the indication bit in the downlink control channel, and sends the downlink control channel to the UE.
  • Step 704 When the UE receives the downlink control channel, obtain the indication bit in the downlink control information carried by the downlink control channel.
  • Step 705 The UE determines, according to the indication bit, the number of repetitions of the downlink control channel. Specifically, when the indication bit indicates the number of repetitions, the UE acquires the corresponding number of repetitions from the correspondence between the stored value and the number of repetitions according to the value corresponding to the indication bit, and determines the number of repetitions obtained as the number of repetitions. The number of repetitions of the downlink control channel.
  • the UE obtains the corresponding repetition level from the correspondence between the stored value and the repetition level according to the value corresponding to the indication bit, and determines the acquired repetition level. Is the repetition level of the downlink control channel. According to the repetition level of the downlink control channel, the corresponding number of repetitions is obtained from the correspondence between the stored repetition level and the repetition number.
  • the UE may further perform a correspondence between the number of repetitions of the stored downlink control channel and the number of repetitions of the data channel according to the number of repetitions of the downlink control channel.
  • the number of repetitions of the corresponding data channel is obtained.
  • the UE may receive a downlink data channel or send an uplink data channel according to the number of repetitions of the data channel.
  • the correspondence between the number of repetitions of the downlink control channel and the number of repetitions of the data channel may be a correspondence between the number of repetitions of the downlink control channel transmitted by the network side and the number of repetitions of the data channel.
  • the correspondence between the number of repetitions of the stored downlink control channel and the number of repetitions of the data channel may also be preset by the UE.
  • the network side may also obtain the number of repetitions of the data channel according to the order of the number of repetitions of the downlink control channel. That is, the number of repetitions of the downlink control channel is sorted in advance, and the number of repetitions of the data channel is sorted, and the number of repetitions of the downlink control channel corresponds to the order of the number of repetitions of the data channel.
  • the number of repetitions of the downlink control channel is indicated according to the indication bit, and the indication bit is sent to the UE.
  • the UE determines the number of repetitions of the downlink control channel according to the indication bit, so that the network side sends the repetition number to be the same as the number of repetitions detected by the UE.
  • the UE can successfully receive the data channel.
  • the UE When the UE successfully receives the data channel, the UE does not cause interference to the uplink control channel of other UEs when the ACK/NACK message is sent to the network side according to the allocated uplink control resource, and the UE After successfully receiving the data channel, the data channel will not be received again, thereby reducing the power consumption and resource loss of the UE.
  • Example eight
  • FIG. 8 is a flowchart of a method for determining a repetition quantity of a downlink control channel according to an embodiment of the present invention. Referring to FIG. 8, the method includes:
  • Step 801 The network side acquires a frequency domain resource corresponding to the repetition quantity according to the repetition quantity of the downlink control channel, where the frequency domain resource is a candidate location or a search space of the downlink control channel.
  • the downlink control channel is transmitted in a frequency division manner, that is, different frequency domain resources are used for different repetition times.
  • different orthogonal frequency domain resources may be allocated for different repetition times, or one or more partially overlapping frequency domain resources may be allocated for different repetition times.
  • the different frequency domain resources may be different candidate locations or different search spaces, and different candidate locations may be non-overlapping or partially overlapping.
  • different candidate positions are orthogonal, the candidate positions are non-overlapping, and when different candidate positions are partially orthogonal, the candidate positions are partially overlapping.
  • the network side sets a plurality of repetition times for the downlink control channel in advance, and configures corresponding frequency domain resources for each repetition quantity.
  • the network side may also be controlled according to downlink
  • the number of repetitions of the channel, and the corresponding repetition level is obtained from the correspondence between the number of repetitions that have been stored and the repetition level.
  • Each repetition level corresponds to a repetition number.
  • the downlink control channel includes three repetition levels, that is, repetition level 1, repetition level 2, and repetition level 3.
  • the repetition number corresponding to the repetition level 1 may be 5 times
  • the repetition number corresponding to the repetition level 2 may be 10 times
  • the repetition number corresponding to the repetition level 3 may be 20 times. If the aggregation level used by the three repetition levels is 8, the search space has only two candidate positions, and therefore, the candidate positions of the three repetition levels may be partially overlapped, as shown in FIG.
  • Different candidate positions or different search spaces are used for different repetition times, and different candidate positions may be different candidate positions of the same search space, or may be candidate positions of different search spaces.
  • the offset may be r.
  • M w r is the number of the repetition level.
  • r may be 1, and M ( ) is the UE needs to be monitored in the search space.
  • the correspondence between the number of repetitions and the repetition level is set in advance by the network side.
  • the downlink control channel may be a PDCCH (Physical Downlink)
  • the Control Channel may also be an Enhanced Physical Downlink Control Channel (E-PDCCH).
  • E-PDCH Enhanced Physical Downlink Control Channel
  • Each repetition level corresponds to a repetition number.
  • the downlink control channel includes three repetition levels, that is, repetition level 1, repetition level 2, and repetition level 3.
  • the repetition level 1 corresponds to 5 repetitions
  • the repetition level 2 corresponds to 10 repetitions
  • the repetition level 3 corresponds to 20 repetitions.
  • the network side transmits the aggregation level of the CCE (Control Channel Element) of the downlink control channel, the starting position parameter of the search space of the PDCCH, the number of the repetition level, and the candidate location.
  • the number of CCEs included in the control area of the number of candidates, the candidate location, and the subframe, and the number of the CCE is calculated according to the following formula (1);
  • L is the aggregation level of the CCE transmitting the downlink control channel
  • Y k is the starting position parameter of the search space of the PDCCH
  • r is the number of the repetition level
  • m is a candidate Position
  • M (L ) is the number of PDCCH candidate positions that the UE needs to monitor in a given search space
  • mod is a modulo operation
  • Y k Y k is 0 in the common search space
  • the network side transmits an ECCE according to the downlink control channel.
  • L is an aggregation level of an ECCE transmitting a downlink control channel
  • Y p , k is the starting position parameter of the search space of the EPDCCH
  • m is the candidate position
  • s is a natural number
  • s can be the number of the repetition level
  • M p ( L) is the EPDCCH-PRB (Physical Resource Block, physical resource Block) - Set p and the aggregation level is L, the number of candidate positions of the EPDCCH that the UE needs to monitor
  • mod is the modulo operation
  • y w ( y w- ⁇ brain ⁇ , where
  • Step 802 The network side carries the downlink control information in the downlink control channel, and carries the downlink control channel on the acquired frequency domain resource.
  • Step 803 The network side sends the downlink control channel to the UE on the acquired frequency domain resource.
  • Step 804 When the UE receives the downlink control channel, the downlink control information is detected according to the frequency domain resource corresponding to the repetition quantity for any repetition number of the stored multiple repetition times.
  • the downlink control channel is obtained according to the frequency domain resource corresponding to the repetition quantity, and the downlink control channel is obtained from the obtained one of the multiple repetition times.
  • the downlink control information and the CRC bits corresponding to the downlink control information are obtained to obtain a bit sequence.
  • bitwise division on the bit sequence according to a bit corresponding to a generator polynomial corresponding to the CRC bit corresponding to the downlink control information carried by the downlink control channel, to obtain a corresponding remainder Number. If the remainder is 0, it is determined that the verification is successful, otherwise, the verification fails.
  • Step 805 If the detection is successful, the UE determines the number of repetitions as the number of repetitions of the downlink control channel.
  • the other repetitions of the plurality of repetitions that have been stored are performed according to the steps of the above steps 804-805 to determine the number of repetitions of the downlink control channel.
  • the UE may further perform a correspondence between the number of repetitions of the stored downlink control channel and the number of repetitions of the data channel according to the number of repetitions of the downlink control channel.
  • the number of repetitions of the corresponding data channel is obtained.
  • the UE may receive the downlink data channel or transmit the uplink data channel according to the number of repetitions of the data channel.
  • the corresponding relationship between the number of repetitions of the downlink control channel and the number of repetitions of the data channel may be a correspondence between the number of repetitions of the downlink control channel transmitted by the network side and the number of repetitions of the data channel.
  • the correspondence between the number of repetitions of the stored downlink control channel and the number of repetitions of the data channel may also be preset by the UE.
  • the network side may also obtain the number of repetitions of the data channel according to the order of the number of repetitions of the downlink control channel. That is, the number of repetitions of the downlink control channel is sorted in advance, and the number of repetitions of the data channel is sorted, and the number of repetitions of the downlink control channel corresponds to the order of the number of repetitions of the data channel.
  • different frequency domain resources are configured for different repetition times, and a downlink control channel is transmitted on the frequency domain resources.
  • the UE obtains the downlink control information according to the frequency domain resource corresponding to the number of repetitions, and checks the obtained downlink control information. If the verification succeeds, the number of repetitions is determined as the number of repetitions of the downlink control channel, so that the network sends the downlink control channel.
  • the number of repetitions is the same as the number of repetitions detected by the UE.
  • the UE can successfully receive the data channel.
  • the UE When the UE successfully receives the data channel, the UE does not cause interference to the uplink control channel of other UEs when the ACK/NACK message is sent to the network side according to the allocated uplink control resource, and the UE succeeds. After receiving the data channel, the data channel will not be received again, thereby reducing the power consumption and resource loss of the UE.
  • Example nine
  • FIG. 10 is a flowchart of a method for determining a repetition quantity of a downlink control channel according to an embodiment of the present invention. Referring to FIG. 10, the method includes:
  • Step 1001 The network side generates a corresponding configuration signaling message according to the repetition quantity of the downlink control channel, where the configuration signaling message carries the repetition number.
  • the effective time of the signaling message is preset, and the network side sends the PDCCH or EPDCCH that is repeatedly transmitted after the preset effective time, so that the UE obtains the PDCCH or EPDCCH after the preset effective time according to the configuration signaling message. The number of repeated transmissions.
  • the configuration signaling message may be an RRC (Radio Resource Control) message or a MAC CE (Media Access Control Channel Element) message.
  • RRC Radio Resource Control
  • MAC CE Media Access Control Channel Element
  • Step 1002 The network side sends the configuration signaling message to the UE.
  • the network side when the network side sends the configuration signaling message to the UE, the network side starts timing. When the aging time reaches the preset effective time, the network side resides in the repetition number, and the downlink control information is carried. In the downlink control channel, the downlink control channel is sent to the UE.
  • Step 1003 When the UE receives the configuration signaling message, the UE determines, according to the configuration signaling message, the number of repetitions of the downlink control channel after a preset effective time.
  • the UE acquires the number of repetitions carried in the configuration signaling message.
  • the number of repetitions obtained is determined by the number of repetitions of the received downlink control channel after the preset time.
  • the UE when the UE receives the configuration signaling message, the UE starts timing. When the aging time reaches the effective time, the number of repetitions of the received downlink control channel is determined according to the effective time.
  • the UE may further perform a correspondence between the number of repetitions of the stored downlink control channel and the number of repetitions of the data channel according to the number of repetitions of the downlink control channel.
  • the number of repetitions of the corresponding data channel is obtained.
  • the UE may receive the downlink data channel or transmit the uplink data channel according to the number of repetitions of the data channel.
  • the corresponding relationship between the number of repetitions of the downlink control channel and the number of repetitions of the data channel may be a correspondence between the number of repetitions of the downlink control channel transmitted by the network side and the number of repetitions of the data channel.
  • the correspondence between the number of repetitions of the stored downlink control channel and the number of repetitions of the data channel may also be preset by the UE.
  • the network side may also obtain the number of repetitions of the data channel according to the order of the number of repetitions of the downlink control channel. That is, the number of repetitions of the downlink control channel is sorted in advance, and the number of repetitions of the data channel is sorted, and the number of repetitions of the downlink control channel corresponds to the order of the number of repetitions of the data channel.
  • the number of repetitions of the downlink control channel is carried in the configuration signaling message.
  • the number of repetitions of the downlink control channel received after the preset effective time is determined according to the preset effective time, so that the number of repetitions sent by the network side is the same as the number of repetitions detected by the UE. .
  • the UE can successfully receive the data channel.
  • the network side allocates an uplink control channel to the UE.
  • the UE sends an ACK/NACK message to the network side, it does not cause interference to the uplink control channel of other UEs. And after the UE successfully receives the data channel, it will not receive the data channel again, thereby reducing the power consumption of the UE.
  • FIG. 11 is a flowchart of a method for determining a repetition quantity of a downlink control channel according to an embodiment of the present invention. Referring to FIG. 11, the method includes:
  • Step 1101 The network side acquires a subframe set corresponding to the repetition quantity according to the repetition quantity of the downlink control channel.
  • the network side acquires a corresponding subframe set from the correspondence between the stored number of repetitions and the subframe set according to the number of repetitions of the downlink control channel, and determines the acquired subframe set as the number of repetitions. Subframe collection.
  • the network side may configure different subframe sets for different repetition times in advance, and store the correspondence between the repetition times and the subframe sets.
  • the network side can also preset the correspondence between the number of repetitions and the set of subframes.
  • the network side When the network side configures different subframe sets for different repetition times, the network side sends the correspondence between the repetition number and the subframe set to the UE.
  • the network side may further obtain a corresponding repetition level from a correspondence between the stored repetition number and the repetition level according to the repetition quantity of the downlink control channel. Obtain a subframe set corresponding to the repetition level according to the obtained repetition level.
  • the sub-frame set corresponding to each repetition quantity includes at least one non-overlapping sub-frame, and the downlink control channel may transmit the downlink control channel by using a candidate position of the downlink control channel in the subframe set corresponding to the repetition quantity.
  • the candidate location of the downlink control channel is a candidate location of the downlink control channel corresponding to a different aggregation level in the search space.
  • the network side may configure or preset a non-overlapping subframe of different repetition times as a start subframe for the downlink control channel to repeatedly transmit.
  • a start subframe or a reference subframe of a certain number of repetitions may be configured or preset, and a start subframe of the number of repetitions is obtained according to the start subframe or the reference subframe of the repetition number, and the configuration or preset offset value.
  • the offset value indicates the number of repetitions The offset of the start subframe or reference subframe. As shown in FIG.
  • the start subframe corresponding to the repetition level 1 is the subframe 0, and the subframe set is the subframe 0;
  • the start subframe corresponding to the repetition level 2 is the subframe 1, and the subframe set is the subframe 1, 2, and 3;
  • the start subframe corresponding to the repetition level 3 is the subframe 4, and the subframe set is the subframe 4, 5
  • the network side may also configure or preset different starting subframe sets for different repetition times.
  • the start subframe set corresponding to the repetition level 1 is the subframes 0, 3, and 6, and the subframe set corresponding to the start subframe 0 is the subframes 0, 1, 2, 3, and 4;
  • the start subframe 3 The corresponding subframe set is subframes 3, 4, 5, 6, and 7;
  • the subframe set corresponding to the start subframe 6 is subframes 6, 7, 8, 9, and 0.
  • the start subframe set corresponding to the repetition level 2 is the subframes 1, 4, and 7, and the subframe set corresponding to the start subframe 1 is the subframes 1, 2, 3, 4, 5, 6, 7, 8, 9, and 0;
  • the subframe set corresponding to the start subframe 4 is subframes 4, 5, 6, 7, 8, 9, 0, 1, 2, and 3;
  • the subframe set corresponding to the start subframe 7 is subframes 7, 8, 9, 0, 1, 2, 3, 4, 5, and 6.
  • the start subframe set corresponding to the repetition level 3 is the subframes 2, 5, and 8, and the subframe set corresponding to the start child 2 is the subframe 2, 3, 4, 5, 6, 7, 8, 9, 0, 1, 2 , 3, 4, 5, 6,
  • the subframe set corresponding to the start subframe 5 is subframes 5, 6, 7, 8, 9, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 0, 1, 2, 3, and 4;
  • the subframe set corresponding to the start subframe 8 is the subframe 8,
  • Step 1102 In the acquired subframe set, the network side carries the downlink control information in the downlink control channel, and sends the downlink control channel to the UE.
  • Step 1103 When the UE receives the downlink control channel, the UE obtains a corresponding downlink control channel according to the subframe set corresponding to the repetition quantity for any repetition number of the stored multiple repetitions.
  • the UE when the UE receives the downlink control channel, the UE performs a correspondence between the number of repetitions that have been stored and the set of subframes according to the number of repetitions of the number of repetitions that have been stored.
  • the corresponding subframe set is obtained in the relationship.
  • the UE obtains a start subframe corresponding to the number of repetitions from the subframe set, and acquires a corresponding downlink control channel according to the start subframe corresponding to the repetition number.
  • Step 1104 The UE detects the acquired downlink control channel.
  • the UE obtains the downlink control information and the CRC bits of the corresponding downlink control information from the obtained downlink control channel, and obtains a bit sequence, which is corresponding to a generator polynomial corresponding to the CRC bit corresponding to the downlink control information carried by the downlink control channel. Bit, binary division of the bit sequence to obtain the corresponding remainder. If the remainder is 0, it is determined that the verification is successful, otherwise, it is determined The verification failed.
  • Step 1105 If the detection is successful, the UE determines the number of repetitions as the number of repetitions of the downlink control channel.
  • the UE may further perform a correspondence between the number of repetitions of the stored downlink control channel and the number of repetitions of the data channel according to the number of repetitions of the downlink control channel.
  • the number of repetitions of the corresponding data channel is obtained.
  • the UE may receive the downlink data channel or transmit the uplink data channel according to the number of repetitions of the data channel.
  • the corresponding relationship between the number of repetitions of the stored downlink control channel and the number of repetitions of the data channel may be that the network side configures the number of repetitions of the data channel according to the number of repetitions of the downlink control channel, and then receives the downlink sent by the network side.
  • the correspondence between the number of repetitions of the stored downlink control channel and the number of repetitions of the data channel may also be preset by the UE.
  • the network side may also obtain the number of repetitions of the data channel according to the order of the number of repetitions of the downlink control channel. That is, the number of repetitions of the downlink control channel is sorted in advance, and the number of repetitions of the data channel is sorted, and the number of repetitions of the downlink control channel corresponds to the order of the number of repetitions of the data channel.
  • different subframe sets are configured for different repetition times, and the non-overlapping subframes in the subframe set are determined as the start subframe of the repetition number.
  • the UE may receive the downlink control channel according to the subframe set corresponding to the number of repetitions, and further determine the number of repetitions of the downlink control channel, so that the number of repetitions sent by the network side is the same as the number of repetitions detected by the UE.
  • the UE can successfully receive the data channel.
  • the network side allocates an uplink control channel to the UE.
  • the UE sends an ACK/NACK message to the network side, it does not cause interference to the uplink control channel of other UEs. And after the UE successfully receives the data channel, it will not receive the data channel again, thereby reducing the power consumption of the UE.
  • the sequence of the highest number of repetitions to the lowest number of repetitions may be detected, and the number of repetitions of the downlink control channel is determined, thereby avoiding detection of different repetition times of the downlink control channel. Blurring problem.
  • the device includes a memory 1401 and a processor 1402, for performing an implementation as described below.
  • the method for determining the number of repetitions of the downlink control channel includes:
  • the downlink control channel is sent to the user equipment UE according to the processing information, and the downlink control channel is used to carry the processed downlink control information, so that the UE determines the number of repetitions of the downlink control channel according to the processing information.
  • the processing information corresponding to the number of repetitions of the downlink control channel is obtained, including:
  • the downlink control channel is sent to the user equipment UE according to the processing information, including: concatenating the cyclic redundancy check code CRC bit corresponding to the downlink control information carried by the downlink control channel in the downlink control information, Obtaining a bit sequence;
  • the CRC bit corresponding to the downlink control information carried by the downlink control channel is scrambled according to the mask and the radio network temporary identifier of the UE, to obtain the processed downlink control information;
  • the processed downlink control information is carried in the downlink control channel, and the downlink control channel is sent to the UE.
  • the method further includes:
  • the CRC bit corresponding to the downlink control information carried by the downlink control channel is scrambled according to the mask and the radio network temporary identifier RNTI of the UE, and the processed downlink control information is obtained, including:
  • the CRC bit corresponding to the downlink control information carried by the downlink control channel is scrambled according to the mask, the antenna selection mask, and the RNTI, to obtain the processed downlink control information.
  • the processing information corresponding to the number of repetitions of the downlink control channel is obtained, including:
  • the method before the sending the downlink control channel to the user equipment UE, according to the processing information, the method further includes:
  • CRC bits are connected in series after the downlink control information to obtain a bit sequence
  • the coded block is subjected to rate matching processing to obtain a rate matching bit.
  • the downlink control channel is sent to the user equipment UE according to the processing information, including: scrambling the rate matching bit according to the scrambling sequence generated by the sequence generator, to obtain the processed downlink control information;
  • the processed downlink control information is carried in the downlink control channel, and the downlink control channel is sent to the UE.
  • the method further includes:
  • the rate matching bit is scrambled and modulated to obtain a modulation symbol
  • the downlink control channel is sent to the user equipment UE according to the processing information, including: multiplying the modulation symbol and the scrambling sequence corresponding to the repetition number by bit by bit, to obtain processed downlink control information;
  • the processed downlink control information is carried in the downlink control channel, and the downlink control channel is sent to the UE.
  • the processing information corresponding to the number of repetitions of the downlink control channel is obtained, including:
  • the indication bit is set according to the number of repetitions of the downlink control channel to indicate the number of repetitions.
  • the indication bit is a new bit or an existing bit.
  • the processing information corresponding to the number of repetitions of the downlink control channel is obtained, including:
  • the frequency domain resource is a candidate location or a search space of the control channel.
  • the downlink control channel is sent to the user equipment UE according to the processing information, including: carrying the downlink control information in the downlink control channel, and carrying the downlink control channel on the frequency domain resource;
  • the sending the downlink control channel to the user equipment UE according to the processing information including: sending a configuration signaling message to the UE, and determining, by the UE, the number of repetitions after the preset effective time according to the configuration signaling message;
  • the downlink control information is carried in the downlink control channel according to the number of repetitions, and after the preset generation time arrives, the downlink control channel is sent to the UE.
  • the configuration signaling message is a radio resource control RRC message or a media access control element MAC CE message.
  • the processing information corresponding to the number of repetitions of the downlink control channel is obtained, including:
  • the downlink control channel is sent to the user equipment UE according to the processing information, and: the downlink control information is carried in the downlink control channel, and the downlink control is performed in the subframe set corresponding to the repetition quantity The channel is sent to the UE.
  • the subframe set corresponding to the multiple repetition times includes at least one non-overlapping subframe.
  • the method further includes:
  • the correspondence between the number of repetitions of the downlink control channel and the number of repetitions of the data channel is preset. Further, the method further includes:
  • the processing information corresponding to the repetition quantity of the downlink control channel is obtained, and the downlink control channel is sent to the UE according to the processing information.
  • the UE determines the number of repetitions of the downlink control channel according to the received downlink control channel. Therefore, the number of repetitions sent by the network side is the same as the number of repetitions detected by the UE.
  • the UE can successfully receive the data channel. When the UE successfully receives the data channel, the UE does not cause interference to the uplink control channel of other UEs when the ACK/NACK message is sent to the network side according to the allocated uplink control resource, and the UE succeeds. After receiving the data channel, the data channel will not be received again, thereby reducing the power consumption and resource loss of the UE.
  • FIG. 15 is a schematic structural diagram of an apparatus for determining a repetition quantity of a downlink control channel according to an embodiment of the present invention.
  • the apparatus includes a memory 1501 and a processor 1502, configured to perform a determining downlink control channel repetition as described below.
  • the method of the number of times including:
  • determining, according to the downlink control channel, the number of repetitions of the downlink control channel including: Des scrambling the processed downlink control information carried by the downlink control channel according to the scrambling sequence corresponding to the number of repetitions;
  • the number of repetitions is determined as the number of repetitions of the downlink control channel.
  • performing descrambling on the processed downlink control information carried by the downlink control channel according to the scrambling sequence corresponding to the repetition quantity including:
  • the scrambled CRC bits in the processed downlink control information carried by the downlink control channel are descrambled according to the mask corresponding to the repetition number and the radio network temporary identifier RNTI of the user equipment UE.
  • the mask and the user equipment corresponding to the repetition number are
  • the radio network temporary identifier RNTI of the UE performs descrambling on the scrambled CRC bits in the processed downlink control information carried by the downlink control channel, including:
  • the scrambled CRC bits in the processed downlink control information carried by the downlink control channel are descrambled according to the mask corresponding to the repetition number and the antenna selection mask and the RNTI.
  • performing descrambling on the processed downlink control information carried by the downlink control channel according to the scrambling sequence corresponding to the repetition quantity including:
  • the processed downlink control information carried by the downlink control channel is descrambled according to the scrambling sequence generated by the sequence generator.
  • performing descrambling on the processed downlink control information carried by the downlink control channel according to the scrambling sequence corresponding to the repetition quantity including:
  • the symbol corresponding to the processed downlink control information carried by the downlink control channel is multiplied by the scrambling sequence corresponding to the number of repetitions to obtain descrambled downlink control information.
  • determining, according to the downlink control channel, the number of repetitions of the downlink control channel including: acquiring an indication bit in downlink control information carried in the downlink channel;
  • the indication bit is a new bit or an existing bit.
  • determining, according to the downlink control channel, the number of repetitions of the downlink control channel including: And detecting, by the frequency domain resource corresponding to the repetition quantity, the downlink control channel, where the frequency domain resource is a candidate location or a search space of the downlink control channel;
  • the number of repetitions is determined as the number of repetitions of the downlink control channel.
  • determining, according to the downlink control channel, the number of repetitions of the downlink control channel including: receiving a configuration signaling message;
  • the number of repetitions carried in the configuration signaling message is determined as the number of repetitions of the downlink control channel after the preset effective time.
  • the configuration signaling message is a radio resource control RRC message or a media access control element MAC CE message.
  • determining the number of repetitions of the downlink control channel according to the downlink control channel including: obtaining, for any one of the multiple repetition times that has been stored, obtaining a corresponding downlink according to the subframe set corresponding to the repetition quantity Control channel
  • the number of repetitions is determined as the number of repetitions of the downlink control channel.
  • the subframe set corresponding to the multiple repetition times includes at least one non-overlapping subframe. Further, the method further includes:
  • the method further includes:
  • the processing information corresponding to the repetition quantity of the downlink control channel is obtained, and the downlink control channel is sent to the UE according to the processing information.
  • the UE determines the number of repetitions of the downlink control channel according to the received downlink control channel. Therefore, the number of repetitions sent by the network side to the number of repetitions detected by the UE is the same.
  • the UE can successfully receive the data channel. When the UE successfully receives the data channel, the UE does not cause the ACK/NACK message to be sent to the network side according to the allocated uplink control resource.
  • the interference of the uplink control channel of other UEs, and the UE does not receive the data channel after successfully receiving the data channel, thereby reducing the power consumption and resource loss of the UE.
  • a person skilled in the art may understand that all or part of the steps of implementing the above embodiments may be completed by hardware, or may be instructed by a program to execute related hardware, and the program may be stored in a computer readable storage medium.
  • the storage medium mentioned may be a read only memory, a magnetic disk or an optical disk or the like. The above is only the preferred embodiment of the present invention, and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., which are within the spirit and scope of the present invention, should be included in the protection of the present invention. Within the scope.

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Abstract

本发明实施例提供了一种确定下行控制信道重复次数的方法及装置,涉及无线通信领域,所述方法包括:获取下行控制信道的重复次数对应的处理信息;根据所述处理信息,将所述下行控制信道发送给用户设备UE,所述下行控制信道用于承载处理后的下行控制信息,使所述UE根据所述处理信息确定所述下行控制信道的重复次数。所述装置包括:第一获取模块和发送模块。本发明可以使网络侧发送的重复次数与UE检测到的重复次数相同。

Description

确定下行控制信道重复次数的方法及装置 技术领域
本发明涉及无线通信领域, 特别涉及一种确定下行控制信道重复次数的方 法及装置。 背景技术
在无线通信系统中, M2M ( Machine to Machine, 机器对机器)通信可以 大大降低通信的成本, 所以 M2M得到了广泛的应用。 其中, M2M可以用于抄 表、 地质测量、 环境监测、 跟踪等场景, 且该 M2M不仅可以部署在室外的空 旷地带,还可以部署在地下室等受建筑物遮挡或穿透损比较大的地方。当 M2M 部署在地下室等受建筑物遮挡或穿透损比较大的地方时网络覆盖较差, 所以可 以通过重复发送信道来增强信道的接收能量, 从而提高 M2M的网络覆盖。
其中, 信道包括控制信道和数据信道, 而控制信道包括上行控制信道和下 行控制信道。 下行控制信道用于承载向 UE ( User Equipment, 用户设备)发送 的下行控制信息, UE 可以根据该下行控制信息与网络侧进行通信。 而当重复 发送下行控制信道时, UE需要确定下行控制信道的重复次数, 根据下行控制 信道的重复次数,获取重复发送的下行控制信道中承载的下行控制信息。 目前, 网络侧根据预设的重复级别向 UE发送下行控制信道。 UE接收网络侧发送的 下行控制信道, 根据预设的重复级别, 通过盲检测重复传输的下行控制信道确 定该重复级别, 进而确定该重复次数。
由于一个下行控制信道可以设置多个重复级别, 网络侧可以随时切换重复 级别以向 UE发送下行控制信道。 当网络侧从第一重复级别切换到第二重复级 别时, UE还使用第一重复级别对重复传输的下行控制信道进行检测, 如果检 测成功, 则 UE检测到的重复次数与网络侧实际发送的重复次数不同。 由于数 据信道与下行控制信道之间的时间间隔固定, 所以当检测成功之后, UE却无 法成功接收到数据信道, 造成了资源浪费。 当无法接收到数据信道, 该 UE会 向网络侧反馈 ACK/NACK ( Acknowledge /Nacknowledge , 确认 /不确认 )消息。 由于 UE向网络侧反馈 ACK/NACK消息时需要占用上行控制信道, 而此时网 络侧并没有为该 UE分配上行控制信道, 所以 UE会造成对其他 UE上行控制 信道的干扰。 并且当该 UE无法成功接收到数据信道时, 该 UE还会继续检测 该数据信道, 如此增加了 UE的功耗。 发明内容
为了, 本发明实施例提供了一种确定下行控制信道重复次数的方法及装 置。 所述技术方案如下:
第一方面,提供了一种确定下行控制信道重复次数的装置,所述装置包括: 第一获取模块, 用于获取下行控制信道的重复次数对应的处理信息; 发送模块, 用于根据所述处理信息, 将所述下行控制信道发送给用户设备
UE, 所述下行控制信道用于承载处理后的下行控制信息,使所述 UE根据所述 处理信息确定所述下行控制信道的重复次数。
结合第一方面, 在上述第一方面的第一种可能的实现方式中, 所述第一获 取模块包括:
第一获取单元, 用于根据下行控制信道的重复次数, 获取对应的掩码。 结合第一方面的第一种可能的实现方式, 在上述第一方面的第二种可能的 实现方式中, 所述发送模块包括:
串联单元, 用于将所述下行控制信道承载的下行控制信息对应的循环冗余 校验码 CRC比特串联在所述下行控制信息之后, 得到比特序列;
第一加扰单元, 用于根据掩码和 UE的无线网络临时标识 RNTI对下行控 制信道承载的下行控制信息对应的 CRC比特进行加扰, 得到处理后的下行控 制信息;
第一发送单元, 用于将所述处理后的下行控制信息承载在所述下行控制信 道中, 并将所述下行控制信道发送给 UE。
结合第一方面的第二种可能的实现方式, 在上述第一方面的第三种可能的 实现方式中, 所述装置还包括:
第二获取模块, 用于当配置了天线选择时, 获取天线选择掩码;
相应地, 所述第一加扰单元, 具体用于:
根据掩码、 所述天线选择掩码和 RNTI对下行控制信道承载的下行控制信 息对应的 CRC比特进行加扰, 得到处理后的下行控制信息。
结合第一方面, 在上述第一方面的第四种可能的实现方式中, 所述第一获 取模块包括:
第二获取单元, 用于获取所述下行控制信道的重复次数对应的加扰初始化 参数;
第三获取单元, 用于获取所述下行控制信道当前所在的时隙编号和网络侧 获取的身份标识 ID值;
初始化单元, 用于根据所述加扰初始化参数、 所述下行控制信道当前所在 的时隙编号和所述网络侧获取的 ID值初始化序列生成器, 使所述序列生成器 生成力 4尤序列。
结合第一方面, 在上述第一方面的第五种可能的实现方式中, 所述装置还 包括:
串联模块, 用于在下行控制信息之后串联 CRC比特, 得到比特序列; 信道编码模块, 用于对所述比特序列进行信道编码, 得到编码块; 速率匹配模块,用于对所述编码块进行速率匹配处理,得到速率匹配比特。 结合第一方面的第四种可能的实现方式或第一方面的第五种可能的实现 方式, 在上述第一方面的第六种可能的实现方式中, 所述发送模块包括:
第二加扰单元, 用于根据序列生成器生成的加扰序列, 对速率匹配比特进 行加扰, 得到处理后的下行控制信息;
第二发送单元, 用于将处理后的下行控制信息承载在所述下行控制信道 中, 并将所述下行控制信道发送给 UE。
结合第一方面的第五种可能的实现方式, 在上述第一方面的第七种可能的 实现方式中, 所述装置还包括:
调制模块, 用于对所述速率匹配比特进行加扰, 调制, 得到调制符号; 相应地, 所述发送模块包括:
相乘单元, 用于将所述调制符号与所述重复次数对应的加扰序列逐位进行 相乘, 得到处理后的下行控制信息;
第三发送单元, 用于将处理后的下行控制信息承载在所述下行控制信道 中, 并将所述下行控制信道发送给 UE。
结合第一方面, 在上述第一方面的第八种可能的实现方式中, 所述第一获 取模块包括:
第四获取单元, 用于获取下行控制信道的重复次数的指示比特;
设置单元, 用于根据所述下行控制信道的重复次数, 设置所述指示比特, 以指示所述重复次数。
结合第一方面的第八种可能的实现方式, 在上述第一方面的第九种可能的 实现方式中, 所述指示比特为新增的比特或者为现有的比特。
结合第一方面, 在上述第一方面的第十种可能的实现方式中, 所述第一获 取模块包括:
第五获取单元, 用于获取所述重复次数对应的频域资源, 所述频域资源为 所述控制信道的候选位置或搜索空间。
结合第一方面的第十种可能的实现方式, 在上述第一方面的第十一种可能 的实现方式中, 所述发送模块包括:
承载单元, 用于将所述下行控制信息承载在所述下行控制信道中, 并将所 述下行控制信道承载在所述频域资源上;
第四发送单元, 用于在所述频域资源上, 将所述下行控制信道发送给 UE。 结合第一方面, 在上述第一方面的第十二种可能的实现方式中, 所述发送 模块包括:
第五发送单元, 用于向 UE发送配置信令消息, 使所述 UE根据所述配置 信令消息确定预设生效时间后的所述重复次数;
第六发送单元, 用于根据所述重复次数, 将下行控制信息承载在所述下行 控制信道中, 在所述预设生效时间到达后, 将所述下行控制信道发送给所述 UE。
结合第一方面的第十二种可能的实现方式, 在上述第一方面的第十三种可 能的实现方式中, 所述配置信令消息为无线资源控制 RRC消息或媒体接入控 制元素 MAC CE消息。
结合第一方面, 在上述第一方面的第十四种可能的实现方式中, 所述第一 获取模块包括:
第六获取单元, 用于根据下行控制信道的重复次数, 获取所述重复次数对 应的子帧集合。
结合第一方面的第十四种可能的实现方式, 在上述第一方面的第十五种可 能的实现方式中, 所述发送模块包括:
第七发送单元, 用于在所述重复次数对应的子帧集合内, 将下行控制信息 承载在所述下行控制信道中, 并将所述下行控制信道发送给 UE。
结合第一方面的第十四种可能的实现方式或第一方面的第十五种可能的 实现方式, 在上述第一方面的第十六种可能的实现方式中, 多个重复次数对应 的子帧集合内至少包括一个不重叠的子帧。
结合第一方面至第一方面的第十六种可能的实现方式中的任一种可能的 实现方式, 在上述第一方面的第十七种可能的实现方式中, 所述装置还包括: 配置模块, 用于配置所述下行控制信道的重复次数与数据信道的重复次数 之间的对应关系, 将所述下行控制信道的重复次数与数据信道的重复次数之间 的对应关系发送给所述 UE; 或者,
预设模块, 用于预设下行控制信道的重复次数与数据信道的重复次数之间 的对应关系。
结合第一方面的第十七种可能的实现方式, 在上述第一方面的第十八种可 能的实现方式中, 所述装置还包括:
第三获取模块, 用于根据所述下行控制信道的重复次数, 从所述下行控制 信道的重复次数与数据信道的重复次数之间的对应关系中获取对应的数据信 道的重复次数;
第一发送或接收模块, 用于根据所述数据信道的重复次数发送下行数据信 道或接收上行数据信道。 第二方面,提供了一种确定下行控制信道重复次数的装置,所述装置包括: 第一接收模块, 用于接收下行控制信道, 所述下行控制信道用于承载处理 后的下行控制信息, 所述下行控制信息是网络侧根据所述下行控制信道的重复 次数对应的处理信息发送的;
确定模块, 用于根据所述下行控制信道, 确定所述下行控制信道的重复次 数。
结合第二方面, 在上述第二方面的第一种可能的实现方式中, 所述确定模 块包括:
解扰单元, 用于对于已存储的多个重复次数中的任一重复次数, 根据所述 重复次数对应的加扰序列, 对所述下行控制信道承载的处理后的下行控制信息 进行解扰;
校验单元, 用于根据所述下行控制信道承载的下行控制信息对应的循环冗 余校验 CRC比特, 对解扰后的下行控制信息进行校验;
第一确定单元, 用于如果校验成功, 则将所述重复次数确定为所述下行控 制信道的重复次数。
结合第二方面的第一种可能的实现方式, 在上述第二方面的第二种可能的 实现方式中, 所述解扰单元包括:
获取子单元, 用于从所述下行控制信道承载的处理后的下行控制信息中获 取加 4尤后的 CRC比特;
第一解扰子单元, 用于根据所述重复次数对应的掩码和用户设备 UE的无 线网络临时标识 RNTI, 对所述下行控制信道承载的处理后的下行控制信息中 加扰后的 CRC比特进行解扰。
结合第二方面的第二种可能的实现方式, 在上述第二方面的第三种可能的 实现方式中, 当配置了天线选择时, 所述解扰单元包括:
第二解扰子单元, 用于根据所述重复次数对应的掩码以及天线选择掩码和
RNTI, 对所述下行控制信道承载的处理后的下行控制信息中加扰后的 CRC比 特进行解扰。
结合第二方面的第一种可能的实现方式, 在上述第二方面的第四种可能的 实现方式中, 所述解扰单元包括:
初始化子单元, 用于根据所述重复次数对应的加扰初始化参数、 所述下行 控制信道当前所在的时隙编号和所述 UE获取的身份标识 ID值, 初始化序列 生成器, 使所述序列生成器生成加扰序列;
第三解扰子单元, 用于根据所述序列生成器生成的加扰序列, 对所述下行 控制信道承载的处理后的下行控制信息进行解扰。
结合第二方面的第一种可能的实现方式, 在上述第二方面的第五种可能的 实现方式中, 所述解扰单元包括:
相乘子单元, 用于将所述下行控制信道承载的处理后的下行控制信息对应 的符号与所述重复次数对应的加扰序列逐位进行相乘,得到解扰后的下行控制 信息。
结合第二方面, 在上述第二方面的第六种可能的实现方式中, 所述确定模 块包括:
第七获取单元, 用于获取所述下行信道中承载的下行控制信息中的指示比 特;
第二确定单元, 用于根据所述指示比特, 确定所述下行控制信道的重复次 数。 结合第二方面的第六种可能的实现方式, 在上述第二方面的第七种可能的 实现方式中, 所述指示比特为新增的比特或者为现有的比特。
结合第二方面, 在上述第二方面的第七种可能的实现方式中, 所述确定模 块包括:
第一检测单元, 用于对于已存储的多个重复次数中的任一重复次数, 根据 所述重复次数对应的频域资源, 对所述下行控制信道进行检测, 所述频域资源 为所述下行控制信道的候选位置或搜索空间;
第三确定单元, 用于如果检测成功, 则将所述重复次数确定为所述下行控 制信道的重复次数。
结合第二方面的第八种可能的实现方式, 在上述第二方面的第九种可能的 实现方式中, 当不同的重复次数位于不同的搜索空间时, 相邻的搜索空间之间 存在偏移。
结合第二方面, 在上述第二方面的第十种可能的实现方式中, 所述确定模 块包括:
接收单元, 用于接收配置信令消息;
第四确定单元, 用于将所述配置信令消息携带的重复次数确定为预设生效 时间后所述下行控制信道的重复次数。
结合第二方面的第十种可能的实现方式, 在上述第二方面的第十一种可能 的实现方式中, 所述配置信令消息为无线资源控制 RRC消息或媒体接入控制 元素 MAC CE消息。
结合第二方面, 在上述第二方面的第十二种可能的实现方式中, 所述确定 模块包括:
第八获取单元, 用于对于已存储的多个重复次数中的任一重复次数, 根据 所述重复次数对应的子帧集合, 获取对应的下行控制信道;
第二检测单元, 用于对获取的下行控制信道进行检测;
第五确定单元, 用于如果检测成功, 则将所述重复次数确定为所述下行控 制信道的重复次数。
结合第二方面的第十二种可能的实现方式, 在上述第二方面的第十三种可 能的实现方式中, 所述多个重复次数对应的子帧集合内至少包括一个不重叠的 子帧。
结合第二方面至第二方面的第十三种可能的实现方式中的任一种可能的 实现方式, 在上述第二方面的第十四种可能的实现方式中, 所述装置还包括: 第四获取模块, 用于根据所述下行控制信道的重复次数, 从已存储的下行 控制信道的重复次数与数据信道的重复次数之间的对应关系中获取数据信道 的重复次数;
第二发送或接收模块, 用于根据所述数据信道的重复次数接收下行数据信 道或发送上行数据信道。
结合第二方面的第十四种可能的实现方式, 在上述第二方面的第十五种可 能的实现方式中, 所述装置还包括:
第二接收模块, 用于接收所述下行控制信道的重复次数与数据信道的重复 次数之间的对应关系。 第三方面,提供了一种确定下行控制信道重复次数的方法,所述方法包括: 获取下行控制信道的重复次数对应的处理信息;
根据所述处理信息, 将所述下行控制信道发送给用户设备 UE, 所述下行 控制信道用于承载处理后的下行控制信息, 使所述 UE根据所述处理信息确定 所述下行控制信道的重复次数。
结合第三方面, 在上述第三方面的第一种可能的实现方式中, 所述获取下 行控制信道的重复次数对应的处理信息, 包括:
根据下行控制信道的重复次数, 获取对应的掩码。
结合第三方面的第一种可能的实现方式, 在上述第三方面的第二种可能的 实现方式中, 所述根据所述处理信息, 将所述下行控制信道发送给用户设备 UE, 包括:
将所述下行控制信道承载的下行控制信息对应的循环冗余校验码 CRC比 特串联在所述下行控制信息之后, 得到比特序列;
根据掩码和 UE的无线网络临时标识 RNTI对下行控制信道承载的下行控 制信息对应的循环冗余校验码 CRC比特进行加扰, 得到处理后的下行控制信 息;
将加扰后的 CRC比特串联在下行控制信息之后, 得到处理后的下行控制 信息;
将所述处理后的下行控制信息承载在所述下行控制信道中, 并将所述下行 控制信道发送给 UE。 结合第三方面的第二种可能的实现方式, 在上述第三方面的第三种可能的 实现方式中, 所述方法还包括:
当配置了天线选择时, 获取天线选择掩码;
相应地, 所述根据掩码和 UE的无线网络临时标识 RNTI对下行控制信道 承载的下行控制信息对应的 CRC比特进行加扰,得到处理后的下行控制信息, 包括:
根据掩码、 所述天线选择掩码和 RNTI对下行控制信道承载的下行控制信 息对应的 CRC比特进行加扰, 得到处理后的下行控制信息,。
结合第三方面, 在上述第三方面的第四种可能的实现方式中, 所述获取下 行控制信道的重复次数对应的处理信息, 包括:
获取所述下行控制信道的重复次数对应的加扰初始化参数;
获取所述下行控制信道当前所在的时隙编号和网络侧获取的身份标识 ID 值;
根据所述加扰初始化参数、 所述下行控制信道当前所在的时隙编号和所述 网络侧获取的 ID值初始化序列生成器, 使所述序列生成器生成加扰序列。
结合第三方面, 在上述第三方面的第五种可能的实现方式中, 所述根据所 述处理信息, 将所述下行控制信道发送给用户设备 UE之前, 还包括:
在下行控制信息之后串联 CRC比特, 得到比特序列;
对所述比特序列进行信道编码, 得到编码块;
对所述编码块进行速率匹配处理, 得到速率匹配比特。
结合第三方面的第四种可能的实现方式或第三方面的第五种可能的实现 方式, 在上述第三方面的第六种可能的实现方式中, 所述根据所述处理信息, 将所述下行控制信道发送给用户设备 UE, 包括:
根据序列生成器生成的加扰序列, 对速率匹配比特进行加扰, 得到处理后 的下行控制信息;
将处理后的下行控制信息承载在所述下行控制信道中, 并将所述下行控制 信道发送给 UE。
结合第三方面的第五种可能的实现方式, 在上述第三方面的第七种可能的 实现方式中, 所述方法还包括:
对所述速率匹配比特进行加扰, 调制, 得到调制符号;
相应地, 所述根据所述处理信息, 将所述下行控制信道发送给用户设备 UE, 包括:
将所述调制符号与所述重复次数对应的加扰序列逐位进行相乘,得到处理 后的下行控制信息;
将处理后的下行控制信息承载在所述下行控制信道中, 并将所述下行控制 信道发送给 UE。
结合第三方面, 在上述第三方面的第八种可能的实现方式中, 所述获取下 行控制信道的重复次数对应的处理信息, 包括:
获取下行控制信道的重复次数的指示比特;
根据所述下行控制信道的重复次数, 设置所述指示比特, 以指示所述重复 次数。
结合第三方面的第八种可能的实现方式, 在上述第三方面的第九种可能的 实现方式中, 所述指示比特为新增的比特或者为现有的比特。
结合第三方面, 在上述第三方面的第十种可能的实现方式中, 所述获取下 行控制信道的重复次数对应的处理信息, 包括:
获取所述重复次数对应的频域资源, 所述频域资源为所述控制信道的候选 位置或搜索空间。
结合第三方面的第十种可能的实现方式, 在上述第三方面的第十一种可能 的实现方式中, 所述根据所述处理信息, 将所述下行控制信道发送给用户设备 UE, 包括:
将所述下行控制信息承载在所述下行控制信道中, 并将所述下行控制信道 承载在所述频域资源上;
在所述频域资源上, 将所述下行控制信道发送给 UE。
结合第三方面, 在上述第三方面的第十二种可能的实现方式中, 所述根据 所述处理信息, 将所述下行控制信道发送给用户设备 UE, 包括:
向 UE发送配置信令消息, 使所述 UE根据所述配置信令消息确定预设生 效时间后的所述重复次数;
根据所述重复次数, 将下行控制信息承载在所述下行控制信道中, 在所述 预设生效时间到达后, 将所述下行控制信道发送给所述 UE。
结合第三方面的第十二种可能的实现方式, 在上述第三方面的第十三种可 能的实现方式中, 所述配置信令消息为无线资源控制 RRC消息或媒体接入控 制元素 MAC CE消息。 结合第三方面, 在上述第三方面的第十四种可能的实现方式中, 所述获取 下行控制信道的重复次数对应的处理信息, 包括:
根据下行控制信道的重复次数, 获取所述重复次数对应的子帧集合。
结合第三方面的第十四种可能的实现方式, 在上述第三方面的第十五种可 能的实现方式中, 所述根据所述处理信息, 将所述下行控制信道发送给用户设 备 UE 包括:
在所述重复次数对应的子帧集合内,将下行控制信息承载在所述下行控制 信道中, 并将所述下行控制信道发送给 UE。
结合第三方面的第十四种可能的实现方式或第三方面的第十五种可能的 实现方式, 在上述第三方面的第十六种可能的实现方式中, 多个重复次数对应 的子帧集合内至少包括一个不重叠的子帧。
结合第三方面至第三方面的第十六种可能的实现方式中的任一种可能的 实现方式, 在上述第三方面的第十七种可能的实现方式中, 所述方法还包括: 配置所述下行控制信道的重复次数与数据信道的重复次数之间的对应关 系, 将所述下行控制信道的重复次数与数据信道的重复次数之间的对应关系发 送给所述 UE; 或者,
预设下行控制信道的重复次数与数据信道的重复次数之间的对应关系。 结合第三方面的第十七种可能的实现方式, 在上述第三方面的第十八种可 能的实现方式中, 所述方法还包括:
根据所述下行控制信道的重复次数,从所述下行控制信道的重复次数与数 据信道的重复次数之间的对应关系中获取对应的数据信道的重复次数;
根据所述数据信道的重复次数发送下行数据信道或接收上行数据信道。 第四方面,提供了一种确定下行控制信道重复次数的方法,所述方法包括: 接收下行控制信道, 所述下行控制信道用于承载处理后的下行控制信息, 所述下行控制信息是网络侧根据所述下行控制信道的重复次数对应的处理信 息发送的;
根据所述下行控制信道, 确定所述下行控制信道的重复次数。
结合第四方面, 在上述第四方面的第一种可能的实现方式中, 所述根据所 述下行控制信道, 确定所述下行控制信道的重复次数, 包括:
对于已存储的多个重复次数中的任一重复次数,根据所述重复次数对应的 加扰序列, 对所述下行控制信道承载的处理后的下行控制信息进行解扰; 根据所述下行控制信道承载的下行控制信息对应的循环冗余校验 CRC比 特, 对解扰后的下行控制信息进行校验;
如果校验成功, 则将所述重复次数确定为所述下行控制信道的重复次数。 结合第四方面的第一种可能的实现方式, 在上述第四方面的第二种可能的 实现方式中, 所述根据所述重复次数对应的加扰序列, 对所述下行控制信道承 载的处理后的下行控制信息进行解扰, 包括:
根据所述重复次数对应的掩码和用户设备 UE的无线网络临时标识 RNTI, 对所述下行控制信道承载的处理后的下行控制信息中加扰后的 CRC比特进行 解扰。
结合第四方面的第二种可能的实现方式, 在上述第四方面的第三种可能的 实现方式中, 当配置了天线选择时, 所述根据所述重复次数对应的掩码和用户 设备 UE的无线网络临时标识 RNTI, 对所述下行控制信道承载的处理后的下 行控制信息中加扰后的 CRC比特进行解扰, 包括:
根据所述重复次数对应的掩码以及天线选择掩码和 RNTI, 对所述下行控 制信道承载的处理后的下行控制信息中加扰后的 CRC比特进行解扰。
结合第四方面的第一种可能的实现方式, 在上述第四方面的第四种可能的 实现方式中, 所述根据所述重复次数对应的加扰序列, 对所述下行控制信道承 载的处理后的下行控制信息进行解扰, 包括:
根据所述重复次数对应的加扰初始化参数、 所述下行控制信道当前所在的 时隙编号和所述 UE获取的身份标识 ID值, 初始化序列生成器, 使所述序列 生成器生成加扰序列;
根据所述序列生成器生成的加扰序列,对所述下行控制信道承载的处理后 的下行控制信息进行解扰。
结合第四方面的第一种可能的实现方式, 在上述第四方面的第五种可能的 实现方式中, 所述根据所述重复次数对应的加扰序列, 对所述下行控制信道承 载的处理后的下行控制信息进行解扰, 包括:
将所述下行控制信道承载的处理后的下行控制信息对应的符号与所述重 复次数对应的加扰序列逐位进行相乘, 得到解扰后的下行控制信息。
结合第四方面, 在上述第四方面的第六种可能的实现方式中, 所述根据所 述下行控制信道, 确定所述下行控制信道的重复次数, 包括: 获取所述下行信道中承载的下行控制信息中的指示比特;
根据所述指示比特, 确定所述下行控制信道的重复次数。
结合第四方面的第六种可能的实现方式, 在上述第四方面的第七种可能的 实现方式中, 所述指示比特为新增的比特或者为现有的比特。
结合第四方面, 在上述第四方面的第七种可能的实现方式中, 所述根据所 述下行控制信道, 确定所述下行控制信道的重复次数, 包括:
对于已存储的多个重复次数中的任一重复次数,根据所述重复次数对应的 频域资源, 对所述下行控制信道进行检测, 所述频域资源为所述下行控制信道 的候选位置或搜索空间;
如果检测成功, 则将所述重复次数确定为所述下行控制信道的重复次数。 结合第四方面的第八种可能的实现方式, 在上述第四方面的第九种可能的 实现方式中, 当不同的重复次数位于不同的搜索空间时, 相邻的搜索空间之间 存在偏移。
结合第四方面, 在上述第四方面的第十种可能的实现方式中, 所述根据所 述下行控制信道, 确定所述下行控制信道的重复次数, 包括:
接收配置信令消息;
将所述配置信令消息携带的重复次数确定为预设生效时间后所述下行控 制信道的重复次数。
结合第四方面的第十种可能的实现方式, 在上述第四方面的第十一种可能 的实现方式中, 所述配置信令消息为无线资源控制 RRC消息或媒体接入控制 元素 MAC CE消息。
结合第四方面, 在上述第四方面的第十二种可能的实现方式中, 所述根据 所述下行控制信道, 确定所述下行控制信道的重复次数, 包括:
对于已存储的多个重复次数中的任一重复次数,根据所述重复次数对应的 子帧集合, 获取对应的下行控制信道;
对获取的下行控制信道进行检测;
如果检测成功, 则将所述重复次数确定为所述下行控制信道的重复次数。 结合第四方面的第十二种可能的实现方式, 在上述第四方面的第十三种可 能的实现方式中, 所述多个重复次数对应的子帧集合内至少包括一个不重叠的 子帧。
结合第四方面至第四方面的第十三种可能的实现方式中的任一种可能的 实现方式, 在上述第四方面的第十四种可能的实现方式中, 所述方法还包括: 根据所述下行控制信道的重复次数,从已存储的下行控制信道的重复次数 与数据信道的重复次数之间的对应关系中获取数据信道的重复次数;
根据所述数据信道的重复次数接收下行数据信道或发送上行数据信道。 结合第四方面的第十四种可能的实现方式, 在上述第四方面的第十五种可 能的实现方式中, 所述根据所述下行控制信道的重复次数, 从已存储的下行控 制信道的重复次数与数据信道的重复次数之间的对应关系中获取数据信道的 重复次数之前, 还包括:
接收所述下行控制信道的重复次数与数据信道的重复次数之间的对应关 系。
在本发明实施例中, 获取下行控制信道的重复次数对应的处理信息, 根据 该处理信息, 将该下行控制信道发送给 UE。 UE根据接收到下行控制信道, 确 定该下行控制信道的重复次数。 从而使网络侧发送到重复次数与 UE检测到的 重复次数相同。 进而 UE可以成功接收数据信道, 当 UE成功接收数据信道时, UE按照所分配的上行控制资源向网络侧发送 ACK/NACK消息时就不会造成 对其他 UE的上行控制信道的干扰, 并且 UE成功接收到数据信道后就不会再 接收数据信道, 进而降低了 UE的功耗和资源的损耗。 附图说明
为了更清楚地说明本发明实施例中的技术方案, 下面将对实施例描述中所 需要使用的附图作简单地介绍, 显而易见地, 下面描述中的附图仅仅是本发明 的一些实施例,对于本领域普通技术人员来讲,在不付出创造性劳动的前提下, 还可以根据这些附图获得其他的附图。
图 1是本发明实施例一提供的一种确定下行控制信道重复次数的装置结构 示意图;
图 2是本发明实施例二提供的一种确定下行控制信道重复次数的装置结构 示意图;
图 3是本发明实施例三提供的一种确定下行控制信道重复次数的方法流程 图;
图 4是本发明实施例四提供的一种确定下行控制信道重复次数的方法流程 图; 图 5是本发明实施例五提供的一种确定下行控制信道重复次数的方法流程 图;
图 6是本发明实施例六提供的一种确定下行控制信道重复次数的方法流程 图;
图 7是本发明实施例七提供的一种确定下行控制信道重复次数的方法流程 图;
图 8是本发明实施例八提供的一种确定下行控制信道重复次数的方法流程 图;
图 9是本发明实施例八提供的一种重复次数对应的频域资源的示意图; 图 10是本发明实施例九提供的一种确定下行控制信道重复次数的方法流 程图;
图 11是本发明实施例十提供的一种确定下行控制信道重复次数的方法流 程图;
图 12是本发明实施例十提供的一种重复次数对应的子帧集合的示意图; 图 13是本发明实施例十提供的另一种重复次数对应的子帧集合的示意图; 图 14是本发明实施例十一提供的一种确定下行控制信道重复次数的装置 结构示意图;
图 15是本发明实施例十二提供的一种确定下行控制信道重复次数的装置 结构示意图。 具体实施方式
为使本发明的目的、 技术方案和优点更加清楚, 下面将结合附图对本发明 实施方式作进一步地详细描述。 实施例一
图 1是本发明实施例提供的一种确定下行控制信道重复次数的装置结构示 意图, 参见图 1, 该装置包括:
第一获取模块 101, 用于获取下行控制信道的重复次数对应的处理信息; 发送模块 102, 用于根据该处理信息, 将该下行控制信道发送给用户设备
UE, 该下行控制信道用于承载处理后的下行控制信息,使该 UE根据该处理信 息确定该下行控制信道的重复次数。 可选地, 第一获取模块 101包括:
第一获取单元, 用于根据下行控制信道的重复次数, 获取对应的掩码。 可选地, 发送模块 102包括:
串联单元, 用于将该下行控制信道承载的下行控制信息对应的循环冗余校 验码 CRC比特串联在该下行控制信息之后, 得到比特序列;
第一加扰单元, 用于根据掩码和 UE的无线网络临时标识 RNTI对下行控 制信道承载的下行控制信息对应的 CRC比特进行加扰, 得到处理后的下行控 制信息;
第一发送单元, 用于将该处理后的下行控制信息承载在该下行控制信道 中, 并将该下行控制信道发送给 UE。
进一步地, 该装置还包括:
第二获取模块, 用于当配置了天线选择时, 获取天线选择掩码; 相应地, 第一加扰单元, 具体用于:
根据掩码、 天线选择掩码和 RNTI对下行控制信道承载的下行控制信息对 应的 CRC比特进行加扰, 得到处理后的下行控制信息。
可选地, 第一获取模块 101包括:
第二获取单元, 用于获取该下行控制信道的重复次数对应的加扰初始化参 数;
第三获取单元, 用于获取所述下行控制信道当前所在的时隙编号和网络侧 获取的身份标识 ID值;
初始化单元, 用于根据该加扰初始化参数、 所述下行控制信道当前所在的 时隙编号和所述网络侧获取的 ID值初始化序列生成器, 使该序列生成器生成 加扰序列。
进一步地, 该装置还包括:
串联模块, 用于在下行控制信息之后串联 CRC比特, 得到比特序列; 信道编码模块, 用于对该比特序列进行信道编码, 得到编码块; 速率匹配模块, 用于对该编码块进行速率匹配处理, 得到速率匹配比特。 可选地, 发送模块 102包括:
第二加扰单元, 用于根据序列生成器生成的加扰序列, 对速率匹配比特进 行加扰, 得到处理后的下行控制信息;
第二发送单元, 用于将处理后的下行控制信息承载在该下行控制信道中, 并将该下行控制信道发送给 UE。
进一步地, 该装置还包括:
调制模块, 用于对该速率匹配比特进行加扰, 调制, 得到调制符号; 相应地, 发送模块 102包括:
相乘单元, 用于将该调制符号与该重复次数对应的加扰序列逐位进行相 乘, 得到处理后的下行控制信息;
第三发送单元, 用于将处理后的下行控制信息承载在该下行控制信道中, 并将该下行控制信道发送给 UE。
可选地, 第一获取模块 101包括:
第四获取单元, 用于获取下行控制信道的重复次数的指示比特; 设置单元, 用于根据该下行控制信道的重复次数, 设置该指示比特, 以指 示该重复次数。
其中, 该指示比特为新增的比特或者为现有的比特。
可选地, 第一获取模块 101包括:
第五获取单元, 用于获取该重复次数对应的频域资源, 该频域资源为该控 制信道的候选位置或搜索空间。
可选地, 发送模块 102包括:
承载单元, 用于将该下行控制信息承载在该下行控制信道中, 并将该下行 控制信道承载在该频域资源上;
第四发送单元, 用于在该频域资源上, 将该下行控制信道发送给 UE。 可选地, 发送模块 102包括:
第五发送单元, 用于向 UE发送配置信令消息, 使该 UE根据该配置信令 消息确定预设生效时间后的该重复次数;
第六发送单元, 用于根据该重复次数, 将下行控制信息承载在该下行控制 信道中, 在预设生效时间到达后, 将该下行控制信道发送给该 UE。
其中, 该配置信令消息为无线资源控制 RRC 消息或媒体接入控制元素 MAC CE消息。
可选地, 第一获取模块 101包括:
第六获取单元, 用于根据下行控制信道的重复次数, 获取该重复次数对应 的子帧集合。
可选地, 发送模块 102包括: 第七发送单元, 用于在该重复次数对应的子帧集合内, 将下行控制信息承 载在该下行控制信道中, 并将该下行控制信道发送给 UE。
其中, 多个重复次数对应的子帧集合内至少包括一个不重叠的子帧。
进一步地, 该装置还包括:
配置模块, 用于配置该下行控制信道的重复次数与数据信道的重复次数之 间的对应关系,将该下行控制信道的重复次数与数据信道的重复次数之间的对 应关系发送给该 UE; 或者,
预设模块, 用于预设下行控制信道的重复次数与数据信道的重复次数之间 的对应关系。
进一步地, 该装置还包括:
第三获取模块, 用于根据该下行控制信道的重复次数, 从该下行控制信道 的重复次数与数据信道的重复次数之间的对应关系中获取对应的数据信道的 重复次数;
第一发送或接收模块, 用于根据该数据信道的重复次数发送下行数据信道 或接收上行数据信道。
在本发明实施例中, 获取下行控制信道的重复次数对应的处理信息, 根据 该处理信息, 将该下行控制信道发送给 UE。 UE根据接收到下行控制信道, 确 定该下行控制信道的重复次数。 从而使网络侧发送到重复次数与 UE检测到的 重复次数相同。 进而 UE可以成功接收数据信道, 当 UE成功接收数据信道时, UE按照所分配的上行控制资源向网络侧发送 ACK/NACK消息时就不会造成 对其他 UE的上行控制信道的干扰, 并且 UE成功接收到数据信道后就不会再 接收数据信道, 进而降低了 UE的功耗和资源的损耗。 实施例二
图 2是本发明实施例提供的一种确定下行控制信道重复次数的装置结构示 意图, 参见图 2, 该装置包括:
第一接收模块 201, 用于接收下行控制信道, 该下行控制信道用于承载处 理后的下行控制信息, 该下行控制信息是网络侧根据该下行控制信道的重复次 数对应的处理信息发送的;
确定模块 202, 用于根据该下行控制信道, 确定该下行控制信道的重复次 数。 可选地, 确定模块 202包括:
解扰单元, 用于对于已存储的多个重复次数中的任一重复次数, 根据该重 复次数对应的加扰序列, 对该下行控制信道承载的处理后的下行控制信息进行 解扰;
校验单元, 用于根据该下行控制信道承载的下行控制信息对应的循环冗余 校验 CRC比特, 对解扰后的下行控制信息进行校验;
第一确定单元, 用于如果校验成功, 则将该重复次数确定为该下行控制信 道的重复次数。
进一步地, 解扰单元包括:
获取子单元, 用于从该下行控制信道承载的处理后的下行控制信息中获取 加 4尤后的 CRC比特;
第一解扰子单元, 用于根据该重复次数对应的掩码和用户设备 UE的无线 网络临时标识 RNTI, 对该下行控制信道承载的处理后的下行控制信息中加扰 后的 CRC比特进行解扰。
可选地, 当配置了天线选择时, 解扰单元包括:
第二解扰子单元, 用于根据该重复次数对应的掩码以及天线选择掩码和
RNTI, 对该下行控制信道承载的处理后的下行控制信息中加扰后的 CRC比特 进行解扰。
其中, 解扰单元包括:
初始化子单元, 用于根据该重复次数对应的加扰初始化参数、 该下行控制 信道当前所在的时隙编号和该 UE获取的身份标识 ID值, 初始化序列生成器, 使该序列生成器生成加扰序列;
第三解扰子单元, 用于根据该序列生成器生成的加扰序列, 对该下行控制 信道承载的处理后的下行控制信息进行解扰。
可选地, 解扰单元包括:
相乘子单元, 用于将该下行控制信道承载的处理后的下行控制信息对应的 符号与该重复次数对应的加扰序列逐位进行相乘, 得到解扰后的下行控制信 息。
可选地, 确定模块 202包括:
第七获取单元, 用于获取该下行信道中承载的下行控制信息中的指示比 特; 第二确定单元, 用于根据该指示比特, 确定该下行控制信道的重复次数。 其中, 该指示比特为新增的比特或者为现有的比特。
可选地, 确定模块 202包括:
第一检测单元, 用于对于已存储的多个重复次数中的任一重复次数, 根据 该重复次数对应的频域资源, 对该下行控制信道进行检测, 该频域资源为该下 行控制信道的候选位置或搜索空间;
第三确定单元, 用于如果检测成功, 则将该重复次数确定为该下行控制信 道的重复次数。
其中, 当不同的重复次数位于不同的搜索空间时, 相邻的搜索空间之间存 在偏移。
可选地, 确定模块 202包括:
接收单元, 用于接收配置信令消息;
第四确定单元, 用于将该配置信令消息携带的重复次数确定为预设生效时 间后该下行控制信道的重复次数。
其中, 该配置信令消息为无线资源控制 RRC 消息或媒体接入控制元素 MAC CE消息。
可选地, 确定模块 202包括:
第八获取单元, 用于对于已存储的多个重复次数中的任一重复次数, 根据 该重复次数对应的子帧集合, 获取对应的下行控制信道;
第二检测单元, 用于对获取的下行控制信道进行检测;
第五确定单元, 用于如果检测成功, 则将该重复次数确定为该下行控制信 道的重复次数。
其中, 该多个重复次数对应的子帧集合内至少包括一个不重叠的子帧。 进一步地, 该装置还包括:
第四获取模块, 用于根据该下行控制信道的重复次数, 从已存储的下行控 制信道的重复次数与数据信道的重复次数之间的对应关系中获取数据信道的 重复次数;
第二发送或接收模块, 用于根据该数据信道的重复次数接收下行数据信道 或发送上行数据信道。
进一步地, 该装置还包括:
第二接收模块, 用于接收该下行控制信道的重复次数与数据信道的重复次 数之间的对应关系。
在本发明实施例中, 获取下行控制信道的重复次数对应的处理信息, 根据 该处理信息, 将该下行控制信道发送给 UE。 UE根据接收到下行控制信道, 确 定该下行控制信道的重复次数。 从而使网络侧发送到重复次数与 UE检测到的 重复次数相同。 进而 UE可以成功接收数据信道, 当 UE成功接收数据信道时, UE按照所分配的上行控制资源向网络侧发送 ACK/NACK消息时就不会造成 对其他 UE的上行控制信道的干扰, 并且 UE成功接收到数据信道后就不会再 接收数据信道, 进而降低了 UE的功耗和资源的损耗。 实施例三
图 3 是本发明实施例提供的一种确定下行控制信道重复次数的方法流程 图, 参见图 3, 该方法包括:
步骤 301 : 获取下行控制信道的重复次数对应的处理信息;
步骤 302: 根据该处理信息, 将该下行控制信道发送给用户设备 UE, 该 下行控制信道用于承载处理后的下行控制信息, 使该 UE根据该处理信息确定 该下行控制信道的重复次数。
可选地, 获取下行控制信道的重复次数对应的处理信息, 包括:
根据下行控制信道的重复次数, 获取对应的掩码。
可选地, 根据该处理信息, 将该下行控制信道发送给用户设备 UE, 包括: 将该下行控制信道承载的下行控制信息对应的循环冗余校验码 CRC比特 串联在该下行控制信息之后, 得到比特序列;
根据掩码和 UE的无线网络临时标识 RNTI对下行控制信道承载的下行控 制信息对应的 CRC比特进行加扰, 得到处理后的下行控制信息;
将该处理后的下行控制信息承载在该下行控制信道中, 并将该下行控制信 道发送给 UE。
其中, 该方法还包括:
当配置了天线选择时, 获取天线选择掩码;
相应地, 根据掩码和 UE的无线网络临时标识 RNTI对下行控制信道承载 的下行控制信息对应的 CRC比特进行加扰, 得到处理后的下行控制信息, 包 括:
根据掩码、 该天线选择掩码和 RNTI对下行控制信道承载的下行控制信息 对应的 CRC比特进行加扰, 得到处理后的下行控制信息。
可选地, 获取下行控制信道的重复次数对应的处理信息, 包括:
获取该下行控制信道的重复次数对应的加扰初始化参数;
获取该下行控制信道当前所在的时隙编号和网络侧获取的身份标识 ID值; 根据该加扰初始化参数、该下行控制信道当前所在的时隙编号和网络侧获 取的 ID值初始化序列生成器, 使该序列生成器生成加扰序列。
可选地, 根据该处理信息, 将该下行控制信道发送给用户设备 UE之前, 还包括:
在下行控制信息之后串联 CRC比特, 得到比特序列;
对该比特序列进行信道编码, 得到编码块;
对该编码块进行速率匹配处理, 得到速率匹配比特。
可选地, 根据该处理信息, 将该下行控制信道发送给用户设备 UE, 包括: 根据序列生成器生成的加扰序列, 对速率匹配比特进行加扰, 得到处理后 的下行控制信息;
将处理后的下行控制信息承载在该下行控制信道中, 并将该下行控制信道 发送给 UE。
进一步地, 该方法还包括:
对该速率匹配比特进行加扰, 调制, 得到调制符号;
相应地, 根据该处理信息, 将该下行控制信道发送给用户设备 UE, 包括: 将该调制符号与该重复次数对应的加扰序列逐位进行相乘,得到处理后的 下行控制信息;
将处理后的下行控制信息承载在该下行控制信道中, 并将该下行控制信道 发送给 UE。
其中, 获取下行控制信道的重复次数对应的处理信息, 包括:
获取下行控制信道的重复次数的指示比特;
根据该下行控制信道的重复次数, 设置该指示比特, 以指示该重复次数。 其中, 该指示比特为新增的比特或者为现有的比特。
可选地, 获取下行控制信道的重复次数对应的处理信息, 包括:
获取该重复次数对应的频域资源, 该频域资源为该控制信道的候选位置或 搜索空间。
可选地, 根据该处理信息, 将该下行控制信道发送给用户设备 UE, 包括: 将该下行控制信息承载在该下行控制信道中, 并将该下行控制信道承载在 该频域资源上;
在该频域资源上, 将该下行控制信道发送给 UE。
可选地, 根据该处理信息, 将该下行控制信道发送给用户设备 UE, 包括: 向 UE发送配置信令消息, 使该 UE根据该配置信令消息确定预设生效时 间后的该重复次数;
根据该重复次数, 将下行控制信息承载在该下行控制信道中, 在该预设生 效时间到达后, 将该下行控制信道发送给该 UE。
其中, 该配置信令消息为无线资源控制 RRC 消息或媒体接入控制元素 MAC CE消息。
可选地, 获取下行控制信道的重复次数对应的处理信息, 包括:
根据下行控制信道的重复次数, 获取该重复次数对应的子帧集合。
可选地, 根据该处理信息, 将该下行控制信道发送给用户设备 UE, 包括: 在该重复次数对应的子帧集合内,将下行控制信息承载在该下行控制信道 中, 并将该下行控制信道发送给 UE。
其中, 多个重复次数对应的子帧集合内至少包括一个不重叠的子帧。
进一步地, 该方法还包括:
配置该下行控制信道的重复次数与数据信道的重复次数之间的对应关系, 将该下行控制信道的重复次数与数据信道的重复次数之间的对应关系发送给 该 UE; 或者,
预设下行控制信道的重复次数与数据信道的重复次数之间的对应关系。 进一步地, 该方法还包括:
根据该下行控制信道的重复次数,从该下行控制信道的重复次数与数据信 道的重复次数之间的对应关系中获取对应的数据信道的重复次数;
根据该数据信道的重复次数发送下行数据信道或接收上行数据信道。
在本发明实施例中, 获取下行控制信道的重复次数对应的处理信息, 根据 该处理信息, 将该下行控制信道发送给 UE。 UE根据接收到下行控制信道, 确 定该下行控制信道的重复次数。 从而使网络侧发送到重复次数与 UE检测到的 重复次数相同。 进而 UE可以成功接收数据信道, 当 UE成功接收数据信道时, UE按照所分配的上行控制资源向网络侧发送 ACK/NACK消息时就不会造成 对其他 UE的上行控制信道的干扰, 并且 UE成功接收到数据信道后就不会再 接收数据信道, 进而降低了 UE的功耗和资源的损耗。 实施例四
图 4 是本发明实施例提供的一种确定下行控制信道重复次数的方法流程 图, 参见图 4, 该方法包括:
步骤 401 : 接收下行控制信道, 该下行控制信道用于承载处理后的下行控 制信息, 该下行控制信息是网络侧根据该下行控制信道的重复次数对应的处理 信息发送的;
步骤 402: 根据该下行控制信道, 确定该下行控制信道的重复次数。
可选地, 根据该下行控制信道, 确定该下行控制信道的重复次数, 包括: 对于已存储的多个重复次数中的任一重复次数,根据该重复次数对应的加 扰序列, 对该下行控制信道承载的处理后的下行控制信息进行解扰;
根据该下行控制信道承载的下行控制信息对应的循环冗余校验 CRC比特, 对解扰后的下行控制信息进行校验;
如果校验成功, 则将该重复次数确定为该下行控制信道的重复次数。
可选地, 根据该重复次数对应的加扰序列, 对该下行控制信道承载的处理 后的下行控制信息进行解扰, 包括:
才艮据该重复次数对应的掩码和用户设备 UE的无线网络临时标识 RNTI, 对该下行控制信道承载的处理后的下行控制信息中加扰后的 CRC比特进行解 扰。
其中, 当配置了天线选择时, 该根据该重复次数对应的掩码和用户设备 UE的无线网络临时标识 RNTI,对该下行控制信道承载的处理后的下行控制信 息中加扰后的 CRC比特进行解扰, 包括:
根据该重复次数对应的掩码以及天线选择掩码和 RNTI, 对该下行控制信 道承载的处理后的下行控制信息中加扰后的 CRC比特进行解扰。
可选地, 根据该重复次数对应的加扰序列, 对该下行控制信道承载的处理 后的下行控制信息进行解扰, 包括:
根据该重复次数对应的加扰初始化参数、该下行控制信道当前所在的时隙 编号和该 UE获取的身份标识 ID值, 初始化序列生成器, 使该序列生成器生 成加扰序列;
根据该序列生成器生成的加扰序列,对该下行控制信道承载的处理后的下 行控制信息进行解扰。
可选地, 根据该重复次数对应的加扰序列, 对该下行控制信道承载的处理 后的下行控制信息进行解扰, 包括:
将该下行控制信道承载的处理后的下行控制信息对应的符号与该重复次 数对应的加扰序列逐位进行相乘, 得到解扰后的下行控制信息。
可选地, 根据该下行控制信道, 确定该下行控制信道的重复次数, 包括: 获取该下行信道中承载的下行控制信息中的指示比特;
根据该指示比特, 确定该下行控制信道的重复次数。
其中, 该指示比特为新增的比特或者为现有的比特。
可选地, 根据该下行控制信道, 确定该下行控制信道的重复次数, 包括: 对于已存储的多个重复次数中的任一重复次数,根据该重复次数对应的频 域资源, 对该下行控制信道进行检测, 该频域资源为该下行控制信道的候选位 置或搜索空间;
如果检测成功, 则将该重复次数确定为该下行控制信道的重复次数。 其中, 当不同的重复次数位于不同的搜索空间时, 相邻的搜索空间之间存 在偏移。
可选地, 根据该下行控制信道, 确定该下行控制信道的重复次数, 包括: 接收配置信令消息;
将该配置信令消息携带的重复次数确定为预设生效时间后该下行控制信 道的重复次数。
其中, 该配置信令消息为无线资源控制 RRC 消息或媒体接入控制元素 MAC CE消息。
可选地, 根据该下行控制信道, 确定该下行控制信道的重复次数, 包括: 对于已存储的多个重复次数中的任一重复次数,根据该重复次数对应的子 帧集合, 获取对应的下行控制信道;
对获取的下行控制信道进行检测;
如果检测成功, 则将该重复次数确定为该下行控制信道的重复次数。 其中, 该多个重复次数对应的子帧集合内至少包括一个不重叠的子帧。 进一步地, 该方法还包括:
根据该下行控制信道的重复次数,从已存储的下行控制信道的重复次数与 数据信道的重复次数之间的对应关系中获取数据信道的重复次数; 根据该数据信道的重复次数接收下行数据信道或发送上行数据信道。
进一步地, 根据该下行控制信道的重复次数, 从已存储的下行控制信道的 重复次数与数据信道的重复次数之间的对应关系中获取数据信道的重复次数 之前, 还包括:
接收该下行控制信道的重复次数与数据信道的重复次数之间的对应关系。 在本发明实施例中, 获取下行控制信道的重复次数对应的处理信息, 根据 该处理信息, 将该下行控制信道发送给 UE。 UE根据接收到下行控制信道, 确 定该下行控制信道的重复次数。 从而使网络侧发送到重复次数与 UE检测到的 重复次数相同。 进而 UE可以成功接收数据信道, 当 UE成功接收数据信道时, UE按照所分配的上行控制资源向网络侧发送 ACK/NACK消息时就不会造成 对其他 UE的上行控制信道的干扰, 并且 UE成功接收到数据信道后就不会再 接收数据信道, 进而降低了 UE的功耗和资源的损耗。 实施例五
图 5 是本发明实施例提供的一种确定下行控制信道重复次数的方法流程 图, 参见图 5, 该方法包括:
步骤 501 : 网络侧根据下行控制信道的重复次数, 获取该重复次数对应的 处理信息。
其中, 在本发明实施例中, 处理信息为加扰序列, 不同的重复次数对应不 同的加扰序列。 具体地, 网络侧根据该下行控制信道的重复次数, 获取该重复 次数对应的处理信息的方法可以根据如下的两种方法中的任一种方法实现, 包 括:
第一种、 网络侧根据该下行控制信道的重复次数, 为该重复次数配置对应 的掩码, 将该掩码确定为该重复次数对应的处理信息。
第二种、 网络侧根据该下行控制信道的重复次数, 从预设的重复次数与掩 码的对应关系中获取对应的掩码, 将该掩码确定为该重复次数对应的处理信 息。
其中, 当该重复次数对应的加扰序列为网络侧配置时, 该网络侧向 UE发 送下行控制信道之前, 网络侧需要将为重复次数配置的加扰序列发送给 UE。 UE接收该加扰序列并存储。
需要说明的是, 在本发明实施例中, 重复次数对应的掩码可以从如下所示 的比特串中选择。
<0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0>,
<0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1>,
<0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,0>,
<0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,1>
<0,0,0,0,0,0,0,0,0,0,0,0,0,1,0,0>,
<0,0,0,0,0,0,0,0,0,0,0,0,1,0,0,0>,
<1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1>,
<0,1, 0,1, 0,1,0,1, 0,1, 0,1, 0,1, 0,1>
<1,0,1, 0,1, 0,1, 0,1, 0,1,0,1, 0,1, 0>
<0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0>,
上述比特串中, 比特串 <。,。,。,。,。,。,。,。,。,。,。,。,。,。,。,1> 为加扰在下行控制信息 formatO的 CRC ( Cyclic Redundancy Check, 循环冗余校验)上的序列, 以指 示 UE进行天线选择, 即<0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0>对应 UE天线端口 0,
<0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0>, <1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1>,
<0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1>对应 UE天线端口 1。比特串 <ο,ι,ο,ι,ο,ΐΑΐ,ο,ι,ο,ι,ο,ι,ο,ι> 为加扰在 BCH ( Broadcast Channel, 广播信道)传输块的 CRC上的序列, 指 示网络侧发送天线配置信息。 当加扰序列为掩码、 RNTI ( Radio Network Temporary Identity, 无线网络临时标识)和天线选择掩码时, 为了使天线选择 指示和下行控制信道重复指示相互独立, 选择的下行控制信道的掩码的最后一 个比特为 0, 以避免下行控制信道对天线选择指示比特状态判断的影响。 即, 该重复次数对应的掩码可以从如下所示的比特串中选择。
<0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,0>,
<0,0,0,0,0,0,0,0,0,0,0,0,0,1,0,0>,
<0,0,0,0,0,0,0,0,0,0,0,0,0,1 ,1 ,0>,
<0,0,0,0,0,0,0,0,0,0,0,0,1,0,0,0>,
<1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,0>,
<0,1, 0,1, 0,1, 0,1, 0,1,0,1, 0,1,0,0>
<1, 0,1, 0,1,0,1, 0,1, 0,1, 0,1, 0,1,0> 可选地,在本发明实施例中,网络侧还可以根据下行控制信道的重复次数, 从已存储的重复次数与重复级别之间的对应关系中获取对应的重复级别。根据 获取的重复级别, 获取该重复级别对应的处理信息, 将获取的处理信息确定为 该重复次数对应的处理信息。
其中, 重复次数与重复级别之间的对应关系是网络侧事先设置的。 在 UE 侧, 该 UE也可以事先设置重复次数与重复级别之间的对应关系。 当然, 网络 侧还可以配置重复次数与重复级别之间的对应关系, 并将该重复次数与重复级 别之间的对应关系发送给 UE。
其中,在本发明实施例中,下行控制信道可以为 PDCCH( Physical Downlink Control Channel, 物理下行控制信道), 也可以为 EPDCCH ( Enhanced Physical Downlink Control Channel, 增强的物理下行控制信道)。
其中, 每个重复级别均对应一个重复次数, 比如, 该下行控制信道包括 3 个重复级别, 即重复级别 1、 重复级别 2和重复级别 3。 重复级别 1对应的重 复次数可以为 5次, 重复级别 2对应的重复次数可以为 10次, 重复级别 3对 应的重复次数可以为 20次。
步骤 502: 网络侧根据该处理信息, 对下行控制信息进行加扰, 得到处理 后的下行控制信息。
其中, 当该处理信息为掩码时, 网络侧根据该处理信息, 对下行控制信息 进行加扰的具体操作可以为: 网络侧获取该下行控制信息对应的 CRC比特, 将该 CRC 比特串联在下行控制信息之后, 得到比特序列。 网络侧获取该 UE 的 RNTI, 根据该掩码和 UE的 RNTI, 对该比特序列中的 CRC比特进行加扰, 得到处理后的下行控制信息。
网络侧根据该掩码和 UE的 RNTI, 对比特序列中的 CRC比特进行加扰, 的具体操作可以为: 网络侧可以根据该掩码和 UE的 RNTI,按照如下公式( 1 ) 对该比特序列中的 CRC比特进行加扰, 得到加扰后的 CRC比特。
ck = (Vk + ^mt k + ^REP,k ) mod 2 ( 1 )
其中,在上述公式( 1 )中, ck为加扰后的 CRC比特, 为 CRC比特, xmti,k 为 RNTI, ¾^为掩码, k为比特的编号, mod为取模运算。 对于下行控制信 息对应的 CRC比特, k=0,l,...,16。
其中,当该处理信息为掩码且配置了天线选择时,网络侧根据该处理信息, 对下行控制信息进行加扰, 得到处理后的下行控制信息的具体操作可以为: 网 络侧获取该下行控制信息对应的 CRC比特、 UE的 RNTI和天线选择掩码, 将 该 CRC比特串联在下行控制信息之后, 得到比特序列。 根据该掩码以及天线 选择掩码和 UE的 RNTI, 对该比特序列中的 CRC比特进行加扰, 得到处理后 的下行控制信息。
网络侧根据该掩码以及天线选择掩码和 UE的 RNTI, 对该比特序列中的 CRC比特进行加扰的具体操作可以为:网络侧根据该掩码以及天线选择掩码和 UE的 RNTI, 按照如下公式( 2 )对该比特序列中的 CRC比特进行加扰, 得到 加扰后的 CRC比特。
ck = (Pk + xm, + xREp,k + xAS,k ) mod 2 (2) 其中, 在上述公式(2 ) 中, cAW为天线选择掩码。
其中,获取 CRC比特的方法具体可以为:在下行控制信息之后串联 k个 0, 将串联 k个 0之后的下行控制信息除以生成多项式对应的比特,得到对应的余 数, 将该余数确定为 CRC比特, 该除法为二进制的除法。 在本发明实施例中 k 可以为 16。
16比特的生成多项式可以根据如下公式(3 )得到:
gcRci6( )) = [Z)16 + Z)12 + Z)5 + l] ( 3 )
其中, 在上述公式(3 )中, gCRC16(Z))为该生成多项式, D表示该多项式中 对应幂次的二进制数为 1。
其中, 该生成多项式对应的比特为: 10001000000100001。
步骤 503: 网络侧将处理后的下行控制信息承载在下行控制信道中, 并将 该下行控制信道发送给 UE。
需要说明的是, 当网络侧将处理后的下行控制信息承载在下行控制信道中 时, 该处理后的下行控制信息是网络侧对下行控制信息进行一系列的处理后得 到的。 该一系列的处理可以为 CRC添加、 CRC加扰、 编码、 速率匹配、 加扰、 调制、 层映射、 预编码、 资源映射和 OFDM ( Orthogonal Frequency Division Multiplexing, 正交频分复用)符号生成中的部分处理或全部处理。 应理解, 处 理后的下行控制信息经过承载在下行控制信道中可以发送出去。 对接收端, 则 是上面描述的逆过程, 不再赘述。 当该下行控制信道为 PDCCH时, 该一系列 的处理还包括复用处理。
其中, 在本发明实施例中, 每当网络侧重复发送下行控制信道时, 网络侧 都根据上述步骤对该下行控制信道对应的下行控制信息进行加扰,得到处理后 的下行控制信息, 并将处理后的下行控制信息承载在下行控制信道中, 并将该 下行控制信道发送给 UE。
步骤 504: 当该 UE接收到该下行控制信道时, 对于已存储的多个重复次 数中的任一重复次数, 该 UE根据该重复次数对应的处理信息, 对该下行控制 信道承载的处理后的下行控制信息进行解扰。
当该处理信息为掩码时, 该 UE根据该重复次数对应的处理信息, 对该下 行控制信道承载的处理后的下行控制信息进行解扰的具体操作可以为: 该 UE 获取该 UE的 RNTI, 以及获取该重复次数对应的掩码, 才艮据该重复次数对应 的掩码和 UE的 RNTI, 按照如下公式(4 )对处理后的下行控制信息中的加扰 后的 CRC比特进行解扰, 得到 CRC比特。
= + ^mt k + ^REP,k ) mod 2 (4)
当该处理信息为掩码且配置了天线选择时, 该 UE根据该重复次数对应的 处理信息, 对该下行控制信道承载的处理后的下行控制信息进行解扰的具体操 作可以为: 该 UE获取该重复次数对应的掩码、 UE的 RNTI和天线选择掩码, 根据该重复次数对应的掩码以及天线掩码和 UE的 RNTI, 按照如下公式( 5 ) 对处理后的下行控制信息中加扰后的 CRC比特进行解扰, 得到 CRC比特。
= + xm,i,k + xREP,k + xAs,k ) mod 2 (5 )
步骤 505:该 UE根据下行控制信道承载的下行控制信息对应的 CRC比特, 对解扰后的下行控制信息进行校验。
具体地, 该 UE对 CRC比特进行解扰后得到含有下行控制信息和 CRC比 特的比特序列, 并根据该下行控制信道承载的下行控制信息对应的 CRC比特 对应的生成多项式对应的比特, 对该比特序列进行二进制的除法, 得到对应的 余数。 如果该余数为 0, 则确定校验成功, 否则, 确定校验失败。
步骤 506: 如果校验成功, 则该 UE将该重复次数确定为该下行控制信道 的重复次数。
进一步地, 如果校验失败, 则对于已存储的多个重复次数中的其他重复次 数, 根据上述步骤 504-506的步骤执行, 以确定该下行控制信道的重复次数。 进一步地, 当该 UE确定该下行控制信道的重复次数之后, 该 UE还可以根据 该下行控制信道的重复次数,从已存储的下行控制信道的重复次数与数据信道 的重复次数之间的对应关系中获取对应的数据信道的重复次数。 该 UE可以根 据该数据信道的重复次数, 接收下行数据信道或发送上行数据信道。
其中, 已存储的下行控制信道的重复次数与数据信道的重复次数之间的对 应关系可以是网络侧发送的下行控制信道的重复次数与数据信道的重复次数 之间的对应关系。 当然, 已存储的下行控制信道的重复次数与数据信道的重复 次数之间的对应关系还可以是该 UE预先设置的。
可选地, 网络侧还可以根据下行控制信道的重复次数的顺序, 获取数据信 道的重复次数。 即事先对下行控制信道的重复次数进行排序, 以及将数据信道 的重复次数进行排序, 下行控制信道的重复次数与数据信道的重复次数的顺序 对应。
在本发明实施例中,根据该重复次数对应的加扰序列对该下行控制信道承 载的下行控制信息对应的 CRC比特进行加扰, 得到处理后的下行控制信息。 将处理后的下行控制信息承载在下行控制信道中, 并发送给 UE。 UE根据重复 次数对应的加扰序列对处理后的下行控制信息进行解扰, 并对解扰后的下行控 制信息进行校验, 如果校验成功, 则将该重复次数确定为该下行控制信道的重 复次数,从而使网络侧发送到重复次数与 UE检测到的重复次数相同。进而 UE 可以成功接收数据信道, 当 UE成功接收数据信道时, UE按照所分配的上行 控制资源向网络侧发送 ACK/NACK消息时就不会造成对其他 UE的上行控制 信道的干扰, 并且 UE成功接收到数据信道后就不会再接收数据信道, 进而降 低了 UE的功耗和资源的损耗。 实施例六
图 6 是本发明实施例提供的一种确定下行控制信道重复次数的方法流程 图, 参见图 6, 该方法包括:
步骤 601 : 网络侧根据下行控制信道的重复次数, 获取该重复次数对应的 处理信息。
其中, 网络侧可以根据如下三种方法中的任一种方法获取该重复次数对应 的处理信息, 包括:
第一种、 网络侧根据下行控制信道的重复次数, 对该重复次数配置对应的 加扰初始化参数, 并获取该下行控制信道当前所在的时隙编号和网络侧获取的 ID ( Identity, 身份标识)值, 根据该加扰初始化参数、 该下行控制信道当前所 在的时隙编号和该网络侧获取的 ID值, 初始化序列生成器, 使该序列生成器 生成加扰序列,将序列生成器生成的加扰序列确定为该重复次数对应的处理信 息。
第二种、 网络侧根据该下行控制信道的重复次数, 从预设的重复次数与加 扰初始化参数之间的对应关系中获取对应的加扰初始化参数。 并获取该下行控 制信道当前所在的时隙编号和网络侧获取的 ID值, 根据获取的加扰初始化参 数、 该下行控制信道当前所在的时隙编号和该网络侧获取的 ID值, 初始化序 列生成器, 使该序列生成器生成加扰序列, 将序列生成器生成的加扰序列确定 为该重复次数对应的处理信息。
其中, 在本发明实施例中, 当该下行控制信道为 PDCCH时, 该 ID值为 该 UE所在小区的 ID值, 当该下行控制信道为 EPDCCH时, 该 ID值为该 UE 特定的 ID值。
第三种、 网络侧根据下行控制信道的重复次数, 对该重复次数配置对应的 加扰初始化参数, 将加扰初始化参数确定为该重复次数对应的处理信息。
进一步地, 当网络侧将该加扰初始化参数确定为该重复次数对应的处理信 息后, 获取该下行控制信道当前所在的时隙编号和网络侧获取的 ID值, 根据 获取的加扰初始化参数、该下行控制信道当前所在的时隙编号和该网络侧获取 的 ID值, 初始化序列生成器, 使该序列生成器生成加扰序列。
可选地,在本发明实施例中,网络侧还可以根据下行控制信道的重复次数, 从已存储的重复次数与重复级别之间的对应关系中获取对应的重复级别。根据 获取的重复级别, 获取该重复级别对应的处理信息, 将获取的处理信息确定为 该重复次数对应的处理信息。
其中, 在本发明实施例中, 下行控制信道可以为 PDCCH, 也可以为 EPDCCH。
其中, 每个重复级别均对应一个重复次数, 比如, 该下行控制信道包括 3 个重复级别, 即重复级别 1、 重复级别 2和重复级别 3。 重复级别 1对应的重 复次数可以为 5次, 重复级别 2对应的重复次数可以为 10次, 重复级别 3对 应的重复次数可以为 20次。
其中, 在本发明实施例中, 加扰序列可以为 Gold序列, 该 Gold序列可以 使用 Gold序列生成器生成。 网络侧可以根据加扰初始化参数、 该下行控制信 道当前所在的时隙编号和该网络侧获取的 ID值, 初始化序列生成器, 使该序 列生成器生成加扰序列, 加扰初始化参数中包含与该重复次数相对应的参数。
当该下行控制信道为 PDCCH时, 网络侧可以根据如下加扰初始化参数生 成加 ·ί尤初始化值: 该重复次数对应的重复级别、 该下行控制信道当前所在的时 隙编号、 该 UE所在小区的 ID值。 按照如下公式( 1 )计算该 Gold序列生成 器的加扰初始化值,
cmit = r .2134"s/2」29 +A ( 1 )
其中, 在上述公式(1 ) 中, cmit为该序列生成器的加扰初始化值, r 为该 重复次数对应的重复级别, 为该下行控制信道当前所在的时隙编号, A 为 该 UE所在小区的 ID值。
当该下行控制信道为 EPDCCH信道时, 可以 居如下加 ·ί尤初始化参数生 成加 ·ί尤初始化值: 该重复次数对应的重复级别、 该下行控制信道当前所在的时 隙编号、 该 UE所在小区的 ID值。 按照如下公式( 2 )计算该 Gold序列生成 器的加扰初始化值,
cinit = r ' 213 +k/2」' 29 + D m CCH (2)
其中, 在上述公式(2 ) 中, cmit为该序列生成器的加扰初始化值, r 为该 重复次数对应的重复级别, 为该下行控制信道当前所在的时隙编号, D m CCH为 该网络侧配置的加扰初始化的参数 ID值。
其中, 时隙编号的取值范围可以为 0-19, 在本发明实施例中 ID值的取值 范围可以为 0-503。
进一步地, 该网络侧可以将重复次数或相应的加扰初始化参数发送给该 UE, 用于 UE才艮据该加 4尤初始化参数生成加 4尤序列, 也可以才艮据该加 4尤初始化 参数初始化序列生成器之后, 将生成的加扰序列发送给该 UE。
步骤 602: 网络侧根据该处理信息, 对下行控制信息进行加扰, 得到处理 后的下行控制信息。
具体地, 网络侧获取该下行控制信息对应的 CRC比特, 在下行控制信息 之后串联获取的 CRC比特, 得到比特序列。 对比特序列进行信道编码, 得到 编码块。 对编码块进行速率匹配处理, 得到速率匹配比特。 根据序列生成器生 成的加扰序列, 对速率匹配比特进行加扰, 得到处理后的下行控制信息。
其中, 当该下行控制信道为 PDCCH时, 对速率匹配比特进行加扰, 得到 处理后的下行控制信息, 包括: 对速率匹配比特进行复用, 得到复用比特, 对 复用比特进行加扰, 得到处理后的下行控制信息。
其中,获取 CRC比特的方法具体可以为:在下行控制信息之后串联 k个 0, 将串联 k个 0之后的下行控制信息除以生成多项式对应的比特,得到对应的余 数, 将该余数确定为 CRC比特, 该除法可以为二进制的除法, 也可以为模二 除法。 在本发明实施例中 k可以为 16。
16比特的生成多项式可以根据如下公式( 3 )得到:
gcRci6( )) = [Z)16 + Z)12 + Z)5 + l] ( 3 )
其中, 在上述公式(3 )中, gCRC16(Z))为该生成多项式, D表示该多项式中 对应幂次的二进制数为 1。
其中, 该生成多项式对应的比特为: 10001000000100001。
其中, 根据序列生成器生成的加扰序列, 对速率匹配比特进行加扰, 得到 处理后的下行控制信息的具体操作可以为: 序列生成器生成加扰序列 Gold序列, 即为下面的 c(n)。 而 Gold序列 c(n) 由 2个 m序列合成, 2个 m序列生成器生成的 m序列分别为 xl和 x2, 如下 公式(4) 所示:
c(n) = χλ(η + Nc) + x2(n + A^c))mod2
x1 (?i + 31) = (x1 (n + 3) + x1 (?i))mod2 ( 4 )
x2 (?i + 31) = (x2 (?i + 3) + x2 {n + 2) + x2 {n + \) + x2 (?i))mod2
其中, 在上述公式( 4 ) 中, n = 0,1,..., MPN - 1, PN即加扰序列 Gold序列的 长度, 对应待加扰的比特块长度, 如速率匹配比特块长度 Mbit。 Nc=600, 为常 数; 第一个 m序列初始化值为常数: ^o^i^W^^iUO, 第二个 m序列初 始化值即前面提到的 Gold序列的加扰初始化值, 即 x2(n)=cinit,n=0,...30,, 对于 PDCCH 是 cmit =r.213+L"s/2」29+A , 对 于 EPDCCH 是 cimt =r.213+ s/2」.29+^^CCH。 该初始化序列生成器可以在重复传输的 PDCCH 或者 EPDCCH的每个子帧进行。
对于长度为 Mbit的待加扰的比特串或比特序列或比特块, wo),...,WMbit -1), 按 照如下公式(5)进行逐比特模二相加得到加扰后的比特块或调制前的比特块; b(i) = (b(i) + c(i))mod2 (5)
其中, 在上述公式(5)中, 0为加扰后的比特块或调制前的比特块中的 第 i比特, c(0为序列生成器生成的加扰序列中的第 i比特。
可选地,初始化序列生成器也可以在重复传输的 PDCCH或者 EPDCCH的 开始子帧进行, 此时开始子帧后面的重复子帧的加扰初始化值与开始子帧的加 尤初始化值相同, 也即加 ·ί尤序列相同。
可选地, 在本发明实施例中, 也可以不使用序列生成器生成加扰序列, 可 以是网络侧直接为该下行控制信道的重复次数配置对应的加扰序列。 当网络侧 直接为该下行控制信道的重复次数配置对应的加扰序列时, 网络侧根据该处理 信息, 对下行控制信息进行加扰, 得到处理后的下行控制信息的具体操作可以 为: 网络侧在下行控制信息之后串联 CRC比特, 得到比特序列。 对比特序列 进行信道编码,得到编码块。对编码块进行速率匹配处理,得到速率匹配比特。 对速率匹配比特进行加扰, 调制, 将调制后的下行控制信息与该重复次数对应 的加扰序列进行相乘, 得到处理后的下行控制信息。
假设经过调制后的下 ,该重复次 数对应的加扰序列分别为
Figure imgf000035_0001
将下行控 制信息的符号和该重复次数对应的加扰序列的符号逐位进行相乘,得到处理后 的下行控制信息。 <1 ,1 ,>, 其中, 网络侧为该重复次数配置的加扰序列可以为序列 的周期扩 展。 可选地,在本发明实施例中,当网络侧直接为该重复次数配置加扰序列时, 网络侧可以对重复传输下行控制信道的各个子帧分别釆用加扰序列的一个值 进行加扰。 该值应用到该子帧内每个符号的加扰, 即对该子帧内每个符号进行 乘积运算。 比如, 该重复次数对应的子帧组内的子帧个数为 4, 该子帧组内的 子帧的加扰序列为 { 1, 1, 1, 1 }, 该加扰序列中的每一个值对应一个子帧内的 加扰值, 该加扰值与该子帧内的每个符号进行乘积运算, 以实现对该子帧进行 加 ·ί尤。 比如, 该重复次数对应的子帧组内的子帧个数为 8, 该子帧组内的子帧 的加扰序列为 { 1, -1, 1, -1, 1, -1, 1, -1 } , 该加扰序列中的每一个值对应一 个子帧内的加扰值, 该加扰值与该子帧内的每个符号进行乘积运算, 以实现对 该子帧进行加 4尤。 比如, 该重复次数对应的子帧组内的子帧个数为 16, 该子帧 组内的子帧的加 4尤序列为 {-1, 1, -1, 1, -1, 1, -1, 1, -1, 1, -1, 1, -1, 1 }, 该加扰序列中的每一个值对应一个子帧内的加扰值, 该加扰值与该子帧内的每 个符号进行乘积运算, 以实现对该子帧进行加扰。
步骤 603: 将处理后的下行控制信息承载在该下行控制信道中, 并将该下 行控制信道发送给 UE。
需要说明的是, 当网络侧将处理后的下行控制信息承载在下行控制信道中 时, 该处理后的下行控制信息是网络侧对下行控制信息进行一系列的处理后得 到的。 该一系列的处理可以为 CRC添加、 CRC加扰、 编码、 速率匹配、 加扰、 调 制 、 层 映 射 、 预 编 码 、 资 源 映 射 和 OFDM ( Orthogonal Frequency Division Multiplex, 正交频分复用)符号生成中的部分 处理或全部处理。 应理解, 处理后的下行控制信息经过承载在下行控制信道中 可以发送出去。 对接收端, 则是上面描述的逆过程, 不再赘述。 当该下行控制 信道为 PDCCH时, 该一系列的处理还包括复用处理。
其中, 在本发明实施例中, 每当网络侧重复发送下行控制信道时, 网络侧 都根据上述步骤对该下行控制信道对应的下行控制信息进行加扰,得到处理后 的下行控制信息, 并将处理后的下行控制信息承载在下行控制信道中, 并将该 下行控制信道发送给 UE。
步骤 604: 当该 UE接收到该下行控制信道时, 对于已存储的多个重复次 数中的任一重复次数, 该 UE根据该重复次数对应的处理信息, 对该下行控制 信道承载的处理后的下行控制信息进行解扰。
其中, 当网络侧将该序列生成器生成的加扰序列发送给该 UE时, 该 UE 可以根据接收到加扰序列, 对该下行控制信道承载的处理后的下行控制信息进 行解扰。 当网络侧未将该重复次数对应的加扰序列发送给该 UE时, 该 UE根 据该重复次数对应的处理信息,对该下行控制信道承载的处理后的下行控制信 息进行解扰的具体操作可以为:该 UE根据该重复次数对应的加扰初始化参数, 初始化序列生成器, 使该序列生成器生成加扰序列。 根据该加扰序列, 对该下 行控制信道承载的处理后的下行控制信息进行解扰。
其中, 该 UE根据该重复次数获取对应的加扰初始化参数的方法可以为如 下两种情况中的任一种, 包括:
第一种、 接收网络侧发送的重复次数与加扰初始化参数之后, 存储重复次 数与加扰初始化参数之间的对应关系, 根据该重复次数, 从已存储的重复次数 与加扰初始化参数之间的对应关系中获取对应的加扰初始化参数。
第二种、按照上述步骤 601中的方法计算该重复次数对应的加扰初始化参 数。
其中, 该 UE根据该加扰序列, 对该下行控制信道承载的处理后的下行控 制信息进行解扰的具体操作可以为:
序列生成器生成加扰序列 Gold序列, 即为下面的 c(n)。 而 Gold序列 c(n) 由 2个 m序列合成, 2个 m序列生成器生成的 m序列分别为 xl和 x2, 如下 公式(6) 所示。
c(n) = χλ(η + Nc) + x2(n + A^c))mod2
xx(n + 31) = {xx(n + 3) + x1(?i))mod2 ( 6 )
x2(n + 31) = (x2 (?i + 3) + x2 {n + 2) + x2 {n + \) + x2 (?i))mod2
其中, 在上述公式( 6 ) 中, " = 0,1,..., MPN - 1, PN即加扰序列 Gold序列的 长度, 对应待加扰的比特块长度, 如速率匹配比特块长度 Mbit。 Nc=600, 为常 数; 第一个 m序列初始化值为常数: ^(^ ^^,"^,2,…,3。, 第二个 m序列初 始化值即前面提到的 Gold 序列的加扰初始化值, 对于 PDCCH 是 cmit = 213+k/2」29+N u, 其加扰初始化参数包括: 与重复次数或重复级别对 应的 r, 时隙号, 小区 ID, 对于EPDCCH是Cmit =r·213+Lws/2」·29+" CCH, 其加 扰初始化参数包括: 与重复次数或重复级别对应的 r, 时隙号, 小区 ID。 该初 始化序列生成器可以在重复传输的 PDCCH或者 EPDCCH的每个子帧进行。
对于长度为 Mhi,的加扰后的比特串或比特序列或比特块,根据如下公式( 7 ) 进行逐比特模二相加得到解扰后的比特块;
b(i) = i (i) + c(i))mod 2 ( 7 )
可选地,初始化序列生成器也可以在重复传输的 PDCCH或者 EPDCCH的 开始子帧进行, 此时开始子帧后面的重复子帧的加扰初始化值与开始子帧的加 扰初始化值相同, 也即加扰序列相同。
进一步地, 当该重复次数对应的加扰序列不为该序列生成器生成的, 而是 网络侧直接为该重复次数配置时, 网络侧根据该加扰序列, 对该下行控制信道 承载的处理后的下行控制信息进行解扰的具体操作可以为: 网络侧将该下行控 制信道承载的处理后的下行控制信息对应的符号与该重复次数对应的加扰序 列逐位进行相乘, 得到调制后的下行控制信息。
步骤 605:该 UE根据下行控制信道承载的下行控制信息对应的 CRC比特, 对解扰后的下行控制信息进行校验。
具体地, 当解扰后的下行控制信息为速率匹配比特时, 该 UE对该速率匹 配比特进行解速率匹配, 得到编码块。 对编码块进行解码, 得到比特序列。 根 据该下行控制信道^^载的下行控制信息对应的 CRC比特对应的生成多项式对 应的比特, 对该比特序列进行二进制的除法, 得到对应的余数。 如果该余数为 0, 则确定校验成功, 否则, 确定校验失败。
进一步地, 当解扰后的下行控制信息为调制后的下行控制信息时, 该 UE 对调制后的下行控制信息进行解调, 得到速率匹配比特。 该 UE对该速率匹配 比特进行解速率匹配, 得到编码块。 对编码块进行解码, 得到比特序列。 根据 该下行控制信道承载的下行控制信息对应的 CRC比特对应的生成多项式对应 的比特, 对该比特序列进行二进制的除法, 得到对应的余数。 如果该余数为 0, 则确定校验成功, 否则, 确定校验失败。
步骤 606: 如果校验成功, 则该 UE将该重复次数确定为该下行控制信道 的重复次数。
进一步地, 如果校验失败, 则对于已存储的多个重复次数中的其他重复次 数, 根据上述步骤 604-606的步骤执行, 以确定该下行控制信道的重复次数。 优选地,。
进一步地, 当该 UE确定该下行控制信道的重复次数之后, 该 UE还可以 根据该下行控制信道的重复次数,从已存储的下行控制信道的重复次数与数据 信道的重复次数之间的对应关系中获取对应的数据信道的重复次数。 该 UE可 以根据该数据信道的重复次数, 接收下行数据信道或发送上行数据信道。
其中, 已存储的下行控制信道的重复次数与数据信道的重复次数之间的对 应关系可以是网络侧发送的下行控制信道的重复次数与数据信道的重复次数 之间的对应关系。 当然, 已存储的下行控制信道的重复次数与数据信道的重复 次数之间的对应关系还可以是该 UE预先设置的。
可选地, 网络侧还可以根据下行控制信道的重复次数的顺序, 获取数据信 道的重复次数。 即事先对下行控制信道的重复次数进行排序, 以及将数据信道 的重复次数进行排序, 下行控制信道的重复次数与数据信道的重复次数的顺序 ——对应。
在本发明实施例中, 在下行控制信息之后串联 CRC比特, 得到比特序列, 对比特序列进行信道编码, 得到编码块, 对编码块进行速率匹配处理, 得到速 率匹配比特。 根据该重复次数对应的加扰序列对该速率匹配比特进行加扰, 得 到处理后的下行控制信息。 将处理后的下行控制信息承载在下行控制信道中, 并发送给 UE。 UE根据重复次数对应的加扰序列对处理后的下行控制信息进行 解扰, 并对解扰后的下行控制信息进行校验, 如果校验成功, 则将该重复次数 确定为该下行控制信道的重复次数, 从而使网络侧发送到重复次数与 UE检测 到的重复次数相同。 进而 UE可以成功接收数据信道, 当 UE成功接收数据信 道时, UE按照所分配的上行控制资源向网络侧发送 ACK/NACK消息时就不会 造成对其他 UE的上行控制信道的干扰, 并且 UE成功接收到数据信道后就不 会再接收数据信道, 进而降低了 UE的功耗和资源的损耗。 实施例七
图 7 是本发明实施例提供的一种确定下行控制信道重复次数的方法流程 图, 参见图 7, 该方法包括:
步骤 701 : 网络侧获取该重复次数的指示比特。
其中, 该指示比特可以为新增比特, 也可以为现有的比特。 当该指示比特 为现有的比特时, 现有的比特可以为载波指示比特、 冗余版本指示比特、 上行 索引比特、 下行分配比特、 信道状态信息请求比特或功率控制命令比特。 该载 波指示比特为 3比特, 冗余版本指示比特为 2比特, 上行索引比特为 2比特, 下行分配比特为 2比特, 信道状态信息请求比特为 1比特或者 2比特, 功率控 制命令比特为 2比特。 当该指示比特为 2比特时, 该指示比特最大可以指示的重复次数为 4次。 当该指示比特为 3比特时, 该指示比特最大可以指示的重复次数为 8次。
使用指示比特可以指示有限的几个重复次数。 可选的在本发明实施例中, 还可以使用该指示比特指示重复级别。 根据该指示比特确定重复级别, 根据该 重复级别,从已存储的重复次数与重复级别之间的对应关系中获取对应的重复 级别。 比如, 当该指示比特为 2比特时, 该指示比特最大可以指示的重复级别 为 4个, 每个重复级别对应一个重复次数。 当该指示比特为 3比特时, 该指示 比特最大可以指示的重复级别为 8个, 每个重复级别对应一个重复次数。
步骤 702: 网络侧根据下行控制信道的重复次数, 设置该指示比特, 以指 示该重复次数。
具体地,当该指示比特指示重复次数时,根据该重复次数设置该指示比特。 当该指示比特指示重复级别时, 网络侧根据该下行控制信道的重复次数, 从已 存储的重复次数与重复级别之间的对应关系中获取对应的重复级别,根据获取 的重复级别, 设置该指示比特。
步骤 703: 网络侧将携带该指示比特的下行控制信息承载在下行控制信道 中, 并将该下行控制信道发送给 UE。
步骤 704: 当 UE接收到该下行控制信道时, 获取该下行控制信道携带的 下行控制信息中的指示比特。
步骤 705: 该 UE根据该指示比特, 确定该下行控制信道的重复次数。 具体地, 当该指示比特指示重复次数时, 该 UE根据该指示比特对应的数 值, 从已存储的数值与重复次数之间的对应关系中获取对应的重复次数, 将获 取的重复次数确定为该下行控制信道的重复次数。
进一步地, 当该指示比特指示重复级别时, 该 UE才艮据该指示比特对应的 数值, 从已存储的数值与重复级别之间的对应关系中获取对应的重复级别, 将 获取的重复级别确定为该下行控制信道的重复级别。根据该下行控制信道的重 复级别,从已存储的重复级别与重复次数之间的对应关系中获取对应的重复次 数。
进一步地, 当该 UE确定该下行控制信道的重复次数之后, 该 UE还可以 根据该下行控制信道的重复次数,从已存储的下行控制信道的重复次数与数据 信道的重复次数之间的对应关系中获取对应的数据信道的重复次数。 该 UE可 以根据该数据信道的重复次数, 接收下行数据信道或发送上行数据信道。 其中, 已存储的下行控制信道的重复次数与数据信道的重复次数之间的对 应关系可以是网络侧发送的下行控制信道的重复次数与数据信道的重复次数 之间的对应关系。 当然, 已存储的下行控制信道的重复次数与数据信道的重复 次数之间的对应关系还可以是该 UE预先设置的。
可选地, 网络侧还可以根据下行控制信道的重复次数的顺序, 获取数据信 道的重复次数。 即事先对下行控制信道的重复次数进行排序, 以及将数据信道 的重复次数进行排序, 下行控制信道的重复次数与数据信道的重复次数的顺序 ——对应。
在本发明实施例中, 根据指示比特指示该下行控制信道的重复次数, 并将 该指示比特发送给 UE。 当 UE接收到该指示比特时,该 UE根据该指示比特确 定该下行控制信道的重复次数, 从而使网络侧发送到重复次数与 UE检测到的 重复次数相同。 进而 UE可以成功接收数据信道, 当 UE成功接收数据信道时, 该 UE按照所分配的上行控制资源向网络侧发送 ACK/NACK消息时就不会造 成对其他 UE的上行控制信道的干扰, 并且 UE成功接收到数据信道后就不会 再接收数据信道, 进而降低了 UE的功耗和资源的损耗。 实施例八
图 8是本发明实施例提供的一种确定下行控制信道的重复次数的方法流程 图, 参见图 8, 该方法包括:
步骤 801 : 网络侧根据下行控制信道的重复次数, 获取该重复次数对应的 频域资源, 该频域资源为下行控制信道的候选位置或搜索空间。
为了避免不同的重复次数之间的检测模糊问题, 在本发明实施例中釆用频 分的方式传输下行控制信道, 即不同的重复次数使用不同的频域资源。 在本发 明实施例中, 可以为不同的重复次数分配不同的正交频域资源, 也可以为不同 的重复次数分配一个或多个部分重叠的频域资源。
其中, 不同的频域资源可以是不同的候选位置或不同的搜索空间, 不同的 候选位置可以是不重叠, 也可以是部分重叠的。 当不同的候选位置是正交方式 的, 则该候选位置是不重叠的, 当不同的候选位置是部分正交的, 则该候选位 置是部分重叠的。
其中, 网络侧事先为该下行控制信道设置多个重复次数, 且为每个重复次 数配置对应的频域资源。 并且在本发明实施例中, 网络侧还可以根据下行控制 信道的重复次数,从已存储的重复次数与重复级别之间的对应关系中获取对应 的重复级别。 其中, 每个重复级别均对应一个重复次数, 比如, 该下行控制信 道包括 3个重复级别, 即重复级别 1、 重复级别 2和重复级别 3。 重复级别 1 对应的重复次数可以为 5次, 重复级别 2对应的重复次数可以为 10次, 重复 级别 3对应的重复次数可以为 20次。 如果该 3个重复级别均使用的聚合级别 为 8时, 搜索空间只有 2个候选位置, 因此, 3个重复级别的候选位置之间可 以是部分重叠的, 如图 9所示。
其中, 不同的重复次数使用不同的候选位置或不同的搜索空间, 且不同的 候选位置可为同一搜索空间的不同候选位置, 也可以是不同的搜索空间的候选 位置。 当不同的重复次数位于不同的搜索空间时, 不同的搜索空间之间存在偏 移。 比如, 该偏移可以为 r . M w, r 为重复级别的个数编号, 比如, 该重复级 别为重复级别 1时, r可以为 1, M ( )为在搜索空间内 UE需要进行监测的下行 控制信道的候选位置个数。
其中, 重复次数与重复级别之间的对应关系是网络侧事先设置的。
其中,在本发明实施例中,下行控制信道可以为 PDCCH( Physical Downlink
Control Channel, 物理下行控制信道), 也可以为 E-PDCCH ( Enhanced Physical Downlink Control Channel, 增强的物理下行控制信道)。
其中, 每个重复级别均对应一个重复次数, 比如, 该下行控制信道包括 3 个重复级别, 即重复级别 1、 重复级别 2和重复级别 3。 重复级别 1对应的重 复次数可以为 5次, 重复级别 2对应的重复次数可以为 10次, 重复级别 3对 应的重复次数可以为 20次。
当该下行控制信道为 PDCCH 时, 网络侧根据传输下行控制信道的 CCE ( Control Channel Element, 控制信道元素) 的聚合级别、 PDCCH的搜索空间 的起始位置参数、 重复级别的个数编号、 候选位置个数、 候选位置和子帧的控 制区域包括的 CCE的个数, 按照如下公式( 1 )计算 CCE的编号;
L
Figure imgf000042_0001
( 1 ) 其中, 在上述公式(1 ) 中, L为传输下行控制信道的 CCE的聚合级别, Yk为 PDCCH的搜索空间的起始位置参数, r为重复级别的个数编号, m为候 选位置, M(L)为在给定搜索空间内 UE需要进行监测的 PDCCH候选位置个数, mod为取模运算, NCCE k为子帧 k的控制区域包括的 CCE的个数, i=0, ..., L-l , m=0, ...M (L) -10 对于 Yk, 在公共搜索空间时, Yk为 0, 在该 UE的专 用搜索空间时, ¾ = (A '¾ i)mod ) , 其中 1 = ¾皿≠0, A = 39827 , D = 65537 , = L"s/2」, ns为一无线†贞内的时隙号, 该时隙号的取值范围为 0-19, IIRNXJ在 UE初始接入 网络时由网络侧进行配置或为预设的值, 或者是根据预设规则生成的值。
当该下行控制信道为 EPDCCH时,网络侧根据传输下行控制信道的 ECCE
( Enhanced Control Channel Element, 增强的控制信道元素) 的聚合级别、
EPDCCH的搜索空间的起始位置参数、候选位置个数、候选位置和子帧的控制 区域包括的 ECCE的个数,, 按照如下公式( 2 )计算 ECCE的编号; / j + '· (2)
Figure imgf000043_0001
其中, 在上述公式(2 ) 中, L为传输下行控制信道的 ECCE的聚合级别,
Yp,k为 EPDCCH的搜索空间的起始位置参数, m为候选位置, s为自然数, s 可以为重复级别的个数编号, Mp ( L)为 EPDCCH-PRB ( Physical Resource Block, 物理资源块 ) -集合 p且聚合级别为 L时, UE需要监测的 EPDCCH的候选位 置个数, mod为取模运算, NECCE,p,k为子帧 k的 EPDCCH-PRB集合 p包括的 ECCE 的个数, i=0, … , L-l , m=0, 1, ...Mp (L) -l。 yw = ( yw- ^腦^, 其中
Υ 0; · = 39827, Α1 = 39829, D = 65537 , = L"s/2」, 是一无线帧内的时隙 号, 该时隙号的取值范围为 0-19, 11]«„1在1¾初始接入网络时由网络侧进行配 置或为预设的值, 或者根据预设规则生成的值。
步骤 802: 网络侧将该下行控制信息承载在该下行控制信道中, 并将该下 行控制信道承载在获取的频域资源上。
步骤 803: 网络侧在获取的频域资源上, 将该下行控制信道发送给 UE。 步骤 804: 当 UE接收到该下行控制信道时, 对于已存储的多个重复次数 中的任一重复次数, 根据该重复次数对应的频域资源, 对该下行控制信息进行 检测。
具体地, 当 UE接收到该下行控制信道时, 对于已存储的多个重复次数中 的任一重复次数, 根据该重复次数对应的频域资源, 获取下行控制信道, 并从 获取的下行控制信道中获取下行控制信息和该下行控制信息对应的 CRC比特, 得到比特序列。 根据该下行控制信道承载的下行控制信息对应的 CRC比特对 应的生成多项式对应的比特, 对该比特序列进行二进制的除法, 得到对应的余 数。 如果该余数为 0, 则确定校验成功, 否则, 确定校验失败。
步骤 805: 如果检测成功, 则该 UE将该重复次数确定为该下行控制信道 的重复次数。
进一步地, 如果校验失败, 则对于已存储的多个重复次数中的其他重复次 数, 根据上述步骤 804-805的步骤执行, 以确定该下行控制信道的重复次数。
进一步地, 当该 UE确定该下行控制信道的重复次数之后, 该 UE还可以 根据该下行控制信道的重复次数,从已存储的下行控制信道的重复次数与数据 信道的重复次数之间的对应关系中获取对应的数据信道的重复次数。 该 UE可 以根据该数据信道的重复次数, 接收下行数据信道或发送上行数据信道。
其中, 已存储的下行控制信道的重复次数与数据信道的重复次数之间的对 应关系可以是网络侧发送的下行控制信道的重复次数与数据信道的重复次数 之间的对应关系。 当然, 已存储的下行控制信道的重复次数与数据信道的重复 次数之间的对应关系还可以是该 UE预先设置的。
可选地, 网络侧还可以根据下行控制信道的重复次数的顺序, 获取数据信 道的重复次数。 即事先对下行控制信道的重复次数进行排序, 以及将数据信道 的重复次数进行排序, 下行控制信道的重复次数与数据信道的重复次数的顺序 ——对应。
在本发明实施例中, 对不同的重复次数配置不同的频域资源, 在该频域资 源上传输下行控制信道。 UE根据重复次数对应的频域资源获取下行控制信息, 并对获取的下行控制信息进行校验, 如果校验成功, 则将该重复次数确定为该 下行控制信道的重复次数, 从而使网络侧发送到重复次数与 UE检测到的重复 次数相同。 进而 UE可以成功接收数据信道, 当 UE成功接收数据信道时, UE 按照所分配的上行控制资源向网络侧发送 ACK/NACK消息时就不会造成对其 他 UE的上行控制信道的干扰, 并且 UE成功接收到数据信道后就不会再接收 数据信道, 进而降低了 UE的功耗和资源的损耗。 实施例九
图 10是本发明实施例提供的一种确定下行控制信道重复次数的方法流程 图, 参见图 10, 该方法包括:
步骤 1001 : 网络侧根据下行控制信道的重复次数,生成对应的配置信令消 息, 该配置信令消息中携带该重复次数。 其中, 该信令消息的生效时间为预设的, 网络侧在预设的生效时间后发送 重复传输的 PDCCH或 EPDCCH, 以使得 UE根据配置信令消息获取预设的生 效时间后的 PDCCH或 EPDCCH的重复传输次数。
其中, 该配置信令消息可以为 RRC ( Radio Resource Control, 无线资源控 制)消息或 MAC CE ( Media Access Control Channel Element, 媒体接入控制元 素) 消息。
步骤 1002: 网络侧将该配置信令消息发送给 UE。
进一步地, 当网络侧将该配置信令消息发送给该 UE时, 该网络侧开始计 时, 当计时时间达到该预设的生效时间时, 该网络侧 居该重复次数, 将该下 行控制信息承载在该下行控制信道中, 并将该下行控制信道发送给该 UE。
步骤 1003: 当该 UE接收到该配置信令消息时, 该 UE根据该配置信令消 息确定预设的生效时间后该下行控制信道的重复次数。
具体地, 当该 UE接收到该配置信令消息时, 该 UE获取该配置信令消息 中携带的重复次数。 根据预设的生效时间, 将获取的重复次数确定预设时间后 接收到的下行控制信道的重复次数。
进一步地, 当该 UE接收到该配置信令消息时, 该 UE开始计时, 当计时 时间达到该生效时间时,根据该生效时间确定接收到的下行控制信道的重复次 数。
进一步地, 当该 UE确定该下行控制信道的重复次数之后, 该 UE还可以 根据该下行控制信道的重复次数,从已存储的下行控制信道的重复次数与数据 信道的重复次数之间的对应关系中获取对应的数据信道的重复次数。 该 UE可 以根据该数据信道的重复次数, 接收下行数据信道或发送上行数据信道。
其中, 已存储的下行控制信道的重复次数与数据信道的重复次数之间的对 应关系可以是网络侧发送的下行控制信道的重复次数与数据信道的重复次数 之间的对应关系。 当然, 已存储的下行控制信道的重复次数与数据信道的重复 次数之间的对应关系还可以是该 UE预先设置的。
可选地, 网络侧还可以根据下行控制信道的重复次数的顺序, 获取数据信 道的重复次数。 即事先对下行控制信道的重复次数进行排序, 以及将数据信道 的重复次数进行排序, 下行控制信道的重复次数与数据信道的重复次数的顺序 对应。
在本发明实施例中, 在配置信令消息中携带该下行控制信道的重复次数。 当 UE接收到该配置信令消息时, 根据预设的生效时间确定预设的生效时间后 接收到的下行控制信道的重复次数, 从而使网络侧发送到重复次数与 UE检测 到的重复次数相同。 进而 UE可以成功接收数据信道, 当 UE成功接收数据信 道时, 网络侧会向该 UE分配上行控制信道, UE向网络侧发送 ACK/NACK消 息时就不会造成对其他 UE的上行控制信道的干扰, 并且 UE成功接收到数据 信道后就不会再接收数据信道, 进而降低了 UE的功耗。 实施例十
图 11是本发明实施例提供的一种确定下行控制信道重复次数的方法流程 图, 参见图 11, 该方法包括:
步骤 1101 : 网络侧根据下行控制信道的重复次数, 获取该重复次数对应的 子帧集合。
具体地, 网络侧根据该下行控制信道的重复次数, 从已存储的重复次数与 子帧集合之间的对应关系中获取对应的子帧集合,将获取的子帧集合确定为该 重复次数对应的子帧集合。
其中, 网络侧可以事先为不同的重复次数配置不同的子帧集合, 并存储重 复次数与子帧集合之间的对应关系。 当然, 网络侧还可以预设重复次数与子帧 集合之间的对应关系。
当网络侧为不同的重复次数配置不同的子帧集合时, 网络侧将该重复次数 与子帧集合之间的对应关系发送给该 UE。
可选地,在本发明实施例中,网络侧还可以根据下行控制信道的重复次数, 从已存储的重复次数与重复级别之间的对应关系中获取对应的重复级别。根据 获取的重复级别, 获取该重复级别对应的子帧集合。
其中, 每个重复次数对应的子帧集合内至少包括一个不重叠的子帧, 下行 控制信道可以使用对应其重复次数的子帧集合中该下行控制信道的候选位置 传输该下行控制信道。该下行控制信道的候选位置为该下行控制信道对应的聚 合级别在搜索空间内不同的候选位置。
进一步地, 网络侧可以配置或预设不同的重复次数中的不重叠的子帧为该 下行控制信道重复传输的开始子帧。 比如, 可以配置或预设某一个重复次数的 开始子帧或参考子帧, 根据该重复次数的开始子帧或参考子帧, 以及配置或预 设偏置值, 获取其他的重复次数的开始子帧。 该偏置值表示相对于该重复次数 的开始子帧或参考子帧的偏置。 如图 12所示, 重复级别 1对应的开始子帧为 子帧 0, 子帧集合为子帧 0; 重复级别 2对应的开始子帧为子帧 1, 子帧集合为 子帧 1、 2和 3; 重复级别 3对应的开始子帧为子帧 4, 子帧集合为子帧 4、 5、
6、 7和 8。
可选地, 网络侧还可以为不同的重复次数配置或预设不同的开始子帧集 合。 如图 13所示, 重复级别 1对应的开始子帧集合为子帧 0、 3和 6, 开始子 帧 0对应的子帧集合为子帧 0、 1、 2、 3和 4; 开始子帧 3对应的子帧集合为子 帧 3、 4、 5、 6和 7; 开始子帧 6对应的子帧集合为子帧 6、 7、 8、 9和 0。 重 复级别 2对应的开始子帧集合为子帧 1、 4和 7,开始子帧 1对应的子帧集合为 子帧 1、 2、 3、 4、 5、 6、 7、 8、 9和 0; 开始子帧 4对应的子帧集合为子帧 4、 5、 6、 7、 8、 9、 0、 1、 2和 3; 开始子帧 7对应的子帧集合为子帧 7、 8、 9、 0、 1、 2、 3、 4、 5和 6。 重复级别 3对应的开始子帧集合为子帧 2、 5和 8, 开始 子 2对应的子帧集合为子帧 2、 3、 4、 5、 6、 7、 8、 9、 0、 1、 2、 3、 4、 5、 6、
7、 8、 9、 0和 1 ; 开始子帧 5对应的子帧集合为子帧 5、 6、 7、 8、 9、 0、 1、 2、 3、 4、 5、 6、 7、 8、 9、 0、 1、 2、 3和 4; 开始子帧 8对应的子帧集合为子帧 8、
9、 0、 1、 2、 3、 4、 5、 6、 7、 8、 9、 0、 1、 2、 3、 4、 5、 6和 7。
步骤 1102: 在获取的子帧集合内, 网络侧将下行控制信息承载在该下行控 制信道中, 并将该下行控制信道发送给 UE。
步骤 1103: 当该 UE接收到该下行控制信道时, 对于已存储的多个重复次 数中的任一重复次数, 该 UE根据该重复次数对应的子帧集合, 获取对应的下 行控制信道。
具体地, 当该 UE接收到该下行控制信道时, 对于已存储的多个重复次数 中的任一重复次数, 该 UE根据该重复次数, 从已存储的重复次数与子帧集合 之间的对应关系中获取对应的子帧集合。 该 UE从该子帧集合中获取该重复次 数对应的开始子帧, 并根据该重复次数对应的开始子帧, 获取对应的下行控制 信道。
步骤 1104: 该 UE对获取的下行控制信道进行检测。
具体地, 该 UE从获取的下行控制信道中获取下行控制信息和对应的下行 控制信息的 CRC比特, 得到比特序列, 根据该下行控制信道承载的下行控制 信息对应的 CRC比特对应的生成多项式对应的比特, 对该比特序列进行二进 制的除法, 得到对应的余数。 如果该余数为 0, 则确定校验成功, 否则, 确定 校验失败。
步骤 1105: 如果检测成功, 则该 UE将该重复次数确定为该下行控制信道 的重复次数。
进一步地, 当该 UE确定该下行控制信道的重复次数之后, 该 UE还可以 根据该下行控制信道的重复次数,从已存储的下行控制信道的重复次数与数据 信道的重复次数之间的对应关系中获取对应的数据信道的重复次数。 该 UE可 以根据该数据信道的重复次数, 接收下行数据信道或发送上行数据信道。
其中, 已存储的下行控制信道的重复次数与数据信道的重复次数之间的对 应关系可以是网络侧根据该下行控制信道的重复次数, 配置该数据信道的重复 次数之后,接收网络侧发送的下行控制信道的重复次数与数据信道的重复次数 之间的对应关系。 当然, 已存储的下行控制信道的重复次数与数据信道的重复 次数之间的对应关系还可以是该 UE预先设置的。
可选地, 网络侧还可以根据下行控制信道的重复次数的顺序, 获取数据信 道的重复次数。 即事先对下行控制信道的重复次数进行排序, 以及将数据信道 的重复次数进行排序, 下行控制信道的重复次数与数据信道的重复次数的顺序 ——对应。
在本发明实施例中, 为不同的重复次数配置不同的子帧集合, 以及将该子 帧集合中不重叠的子帧确定为该重复次数的开始子帧。 该 UE可以根据重复次 数对应的子帧集合接收到下行控制信道, 进而确定该下行控制信道的重复次 数, 从而使网络侧发送到重复次数与 UE检测到的重复次数相同。 进而 UE可 以成功接收数据信道, 当 UE成功接收数据信道时, 网络侧会向该 UE分配上 行控制信道, UE向网络侧发送 ACK/NACK消息时就不会造成对其他 UE的上 行控制信道的干扰, 并且 UE成功接收到数据信道后就不会再接收数据信道, 进而降低了 UE的功耗。
可选地地, 在本发明的另一实施例中, 可以从最高的重复次数向最低的重 复次数的顺序检测, 确定该下行控制信道的重复次数, 从而避免下行控制信道 的不同重复次数检测时的模糊问题。 实施例十一
图 14是本发明实施例提供的一种确定下行控制信道重复次数的装置, 参 见图 14, 该装置包括存储器 1401和处理器 1402, 用于执行如下所述的一种确 定下行控制信道重复次数的方法, 包括:
获取下行控制信道的重复次数对应的处理信息;
根据该处理信息, 将该下行控制信道发送给用户设备 UE, 该下行控制信 道用于承载处理后的下行控制信息, 使该 UE根据该处理信息确定该下行控制 信道的重复次数。
可选地, 获取下行控制信道的重复次数对应的处理信息, 包括:
根据下行控制信道的重复次数, 获取对应的掩码。
可选地, 根据该处理信息, 将该下行控制信道发送给用户设备 UE, 包括: 将该下行控制信道承载的下行控制信息对应的循环冗余校验码 CRC比特 串联在该下行控制信息之后, 得到比特序列;
根据掩码和 UE的无线网络临时标识 RNTI对下行控制信道承载的下行控 制信息对应的 CRC比特进行加扰, 得到处理后的下行控制信息;
将该处理后的下行控制信息承载在该下行控制信道中, 并将该下行控制信 道发送给 UE。
其中, 该方法还包括:
当配置了天线选择时, 获取天线选择掩码;
相应地, 根据掩码和 UE的无线网络临时标识 RNTI对下行控制信道承载 的下行控制信息对应的 CRC比特进行加扰, 得到处理后的下行控制信息, 包 括:
根据掩码、 该天线选择掩码和 RNTI对下行控制信道承载的下行控制信息 对应的 CRC比特进行加扰, 得到处理后的下行控制信息。
可选地, 获取下行控制信道的重复次数对应的处理信息, 包括:
获取该下行控制信道的重复次数对应的加扰初始化参数;
获取该下行控制信道当前所在的时隙编号和网络侧获取的身份标识 ID值; 根据该加扰初始化参数、该下行控制信道当前所在的时隙编号和该网络侧 获取的 ID值初始化序列生成器, 使该序列生成器生成加扰序列。
可选地, 根据该处理信息, 将该下行控制信道发送给用户设备 UE之前, 还包括:
在下行控制信息之后串联 CRC比特, 得到比特序列;
对该比特序列进行信道编码, 得到编码块;
对该编码块进行速率匹配处理, 得到速率匹配比特。 可选地, 根据该处理信息, 将该下行控制信道发送给用户设备 UE, 包括: 根据序列生成器生成的加扰序列, 对速率匹配比特进行加扰, 得到处理后 的下行控制信息;
将处理后的下行控制信息承载在该下行控制信道中, 并将该下行控制信道 发送给 UE。
进一步地, 该方法还包括:
对该速率匹配比特进行加扰, 调制, 得到调制符号;
相应地, 根据该处理信息, 将该下行控制信道发送给用户设备 UE, 包括: 将该调制符号与该重复次数对应的加扰序列逐位进行相乘,得到处理后的 下行控制信息;
将处理后的下行控制信息承载在该下行控制信道中, 并将该下行控制信道 发送给 UE。
其中, 获取下行控制信道的重复次数对应的处理信息, 包括:
获取下行控制信道的重复次数的指示比特;
根据该下行控制信道的重复次数, 设置该指示比特, 以指示该重复次数。 其中, 该指示比特为新增的比特或者为现有的比特。
可选地, 获取下行控制信道的重复次数对应的处理信息, 包括:
获取该重复次数对应的频域资源, 该频域资源为该控制信道的候选位置或 搜索空间。
可选地, 根据该处理信息, 将该下行控制信道发送给用户设备 UE, 包括: 将该下行控制信息承载在该下行控制信道中, 并将该下行控制信道承载在 该频域资源上;
在该频域资源上, 将该下行控制信道发送给 UE。
可选地, 根据该处理信息, 将该下行控制信道发送给用户设备 UE, 包括: 向 UE发送配置信令消息, 使该 UE根据该配置信令消息确定预设生效时 间后的该重复次数;
根据该重复次数, 将下行控制信息承载在该下行控制信道中, 在该预设生 效时间到达后, 将该下行控制信道发送给该 UE。
其中, 该配置信令消息为无线资源控制 RRC 消息或媒体接入控制元素 MAC CE消息。
可选地, 获取下行控制信道的重复次数对应的处理信息, 包括: 可选地, 根据该处理信息, 将该下行控制信道发送给用户设备 UE, 包括: 在该重复次数对应的子帧集合内,将下行控制信息承载在该下行控制信道 中, 并将该下行控制信道发送给 UE。
其中, 多个重复次数对应的子帧集合内至少包括一个不重叠的子帧。
进一步地, 该方法还包括:
配置该下行控制信道的重复次数与数据信道的重复次数之间的对应关系, 将该下行控制信道的重复次数与数据信道的重复次数之间的对应关系发送给 该 UE; 或者,
预设下行控制信道的重复次数与数据信道的重复次数之间的对应关系。 进一步地, 该方法还包括:
根据该下行控制信道的重复次数,从该下行控制信道的重复次数与数据信 道的重复次数之间的对应关系中获取对应的数据信道的重复次数;
根据该数据信道的重复次数发送下行数据信道或接收上行数据信道。
在本发明实施例中, 获取下行控制信道的重复次数对应的处理信息, 根据 该处理信息, 将该下行控制信道发送给 UE。 UE根据接收到下行控制信道, 确 定该下行控制信道的重复次数。 从而使网络侧发送到重复次数与 UE检测到的 重复次数相同。 进而 UE可以成功接收数据信道, 当 UE成功接收数据信道时, UE按照所分配的上行控制资源向网络侧发送 ACK/NACK消息时就不会造成 对其他 UE的上行控制信道的干扰, 并且 UE成功接收到数据信道后就不会再 接收数据信道, 进而降低了 UE的功耗和资源的损耗。 实施例十二
图 15是本发明实施例提供的一种确定下行控制信道重复次数的装置结构 示意图, 参见图 15, 该装置包括存储器 1501和处理器 1502, 用于执行如下所 述的一种确定下行控制信道重复次数的方法, 包括:
接收下行控制信道, 该下行控制信道用于承载处理后的下行控制信息, 该 下行控制信息是网络侧根据该下行控制信道的重复次数对应的处理信息发送 的;
根据该下行控制信道, 确定该下行控制信道的重复次数。
可选地, 根据该下行控制信道, 确定该下行控制信道的重复次数, 包括: 对于已存储的多个重复次数中的任一重复次数,根据该重复次数对应的加 扰序列, 对该下行控制信道承载的处理后的下行控制信息进行解扰;
根据该下行控制信道承载的下行控制信息对应的循环冗余校验 CRC比特, 对解扰后的下行控制信息进行校验;
如果校验成功, 则将该重复次数确定为该下行控制信道的重复次数。
可选地, 根据该重复次数对应的加扰序列, 对该下行控制信道承载的处理 后的下行控制信息进行解扰, 包括:
才艮据该重复次数对应的掩码和用户设备 UE的无线网络临时标识 RNTI, 对该下行控制信道承载的处理后的下行控制信息中加扰后的 CRC比特进行解 扰。
其中, 当配置了天线选择时, 该根据该重复次数对应的掩码和用户设备
UE的无线网络临时标识 RNTI,对该下行控制信道承载的处理后的下行控制信 息中加扰后的 CRC比特进行解扰, 包括:
根据该重复次数对应的掩码以及天线选择掩码和 RNTI, 对该下行控制信 道承载的处理后的下行控制信息中加扰后的 CRC比特进行解扰。
可选地, 根据该重复次数对应的加扰序列, 对该下行控制信道承载的处理 后的下行控制信息进行解扰, 包括:
根据该重复次数对应的加扰初始化参数、该下行控制信道当前所在的时隙 编号和该 UE获取的身份标识 ID值, 初始化序列生成器, 使该序列生成器生 成加扰序列;
根据该序列生成器生成的加扰序列,对该下行控制信道承载的处理后的下 行控制信息进行解扰。
可选地, 根据该重复次数对应的加扰序列, 对该下行控制信道承载的处理 后的下行控制信息进行解扰, 包括:
将该下行控制信道承载的处理后的下行控制信息对应的符号与该重复次 数对应的加扰序列逐位进行相乘, 得到解扰后的下行控制信息。
可选地, 根据该下行控制信道, 确定该下行控制信道的重复次数, 包括: 获取该下行信道中承载的下行控制信息中的指示比特;
根据该指示比特, 确定该下行控制信道的重复次数。
其中, 该指示比特为新增的比特或者为现有的比特。
可选地, 根据该下行控制信道, 确定该下行控制信道的重复次数, 包括: 对于已存储的多个重复次数中的任一重复次数,根据该重复次数对应的频 域资源, 对该下行控制信道进行检测, 该频域资源为该下行控制信道的候选位 置或搜索空间;
如果检测成功, 则将该重复次数确定为该下行控制信道的重复次数。
其中, 当不同的重复次数位于不同的搜索空间时, 相邻的搜索空间之间存 在偏移。
可选地, 根据该下行控制信道, 确定该下行控制信道的重复次数, 包括: 接收配置信令消息;
将该配置信令消息携带的重复次数确定为预设生效时间后该下行控制信 道的重复次数。
其中, 该配置信令消息为无线资源控制 RRC 消息或媒体接入控制元素 MAC CE消息。
可选地, 根据该下行控制信道, 确定该下行控制信道的重复次数, 包括: 对于已存储的多个重复次数中的任一重复次数,根据该重复次数对应的子 帧集合, 获取对应的下行控制信道;
对获取的下行控制信道进行检测;
如果检测成功, 则将该重复次数确定为该下行控制信道的重复次数。
其中, 该多个重复次数对应的子帧集合内至少包括一个不重叠的子帧。 进一步地, 该方法还包括:
根据该下行控制信道的重复次数,从已存储的下行控制信道的重复次数与 数据信道的重复次数之间的对应关系中获取数据信道的重复次数;
根据该数据信道的重复次数接收下行数据信道或发送上行数据信道。
进一步地, 根据该下行控制信道的重复次数, 从已存储的下行控制信道的 重复次数与数据信道的重复次数之间的对应关系中获取数据信道的重复次数 之前, 还包括:
接收该下行控制信道的重复次数与数据信道的重复次数之间的对应关系。 在本发明实施例中, 获取下行控制信道的重复次数对应的处理信息, 根据 该处理信息, 将该下行控制信道发送给 UE。 UE根据接收到下行控制信道, 确 定该下行控制信道的重复次数。 从而使网络侧发送到重复次数与 UE检测到的 重复次数相同。 进而 UE可以成功接收数据信道, 当 UE成功接收数据信道时, UE按照所分配的上行控制资源向网络侧发送 ACK/NACK消息时就不会造成 对其他 UE的上行控制信道的干扰, 并且 UE成功接收到数据信道后就不会再 接收数据信道, 进而降低了 UE的功耗和资源的损耗。 本领域普通技术人员可以理解实现上述实施例的全部或部分步骤可以通 过硬件来完成, 也可以通过程序来指令相关的硬件完成, 所述的程序可以存储 于一种计算机可读存储介质中, 上述提到的存储介质可以是只读存储器, 磁盘 或光盘等。 以上所述仅为本发明的较佳实施例, 并不用以限制本发明, 凡在本发明的 精神和原则之内, 所作的任何修改、 等同替换、 改进等, 均应包含在本发明的 保护范围之内。

Claims

权 利 要 求 书
1、 一种确定下行控制信道重复次数的装置, 其特征在于, 所述装置包括: 第一获取模块, 用于获取下行控制信道的重复次数对应的处理信息; 发送模块, 用于根据所述处理信息, 将所述下行控制信道发送给用户设备
UE, 所述下行控制信道用于承载处理后的下行控制信息, 使所述 UE根据所述 处理信息确定所述下行控制信道的重复次数。
2、 如权利要求 1所述的装置, 其特征在于, 所述第一获取模块包括: 第一获取单元, 用于根据下行控制信道的重复次数, 获取对应的掩码。
3、 如权利要求 2所述的装置, 其特征在于, 所述发送模块包括: 串联单元, 用于将所述下行控制信道承载的下行控制信息对应的循环冗余 校验码 CRC比特串联在所述下行控制信息之后, 得到比特序列;
第一加扰单元,用于根据掩码和 UE的无线网络临时标识 RNTI对下行控制 信道承载的下行控制信息对应的 CRC比特进行加扰, 得到处理后的下行控制信 息;
第一发送单元, 用于将所述处理后的下行控制信息承载在所述下行控制信 道中, 并将所述下行控制信道发送给 UE。
4、 如权利要求 3所述的装置, 其特征在于, 所述装置还包括:
第二获取模块, 用于当配置了天线选择时, 获取天线选择掩码;
相应地, 所述第一加扰单元, 具体用于:
根据掩码、所述天线选择掩码和 RNTI对下行控制信道承载的下行控制信息 对应的 CRC比特进行加扰, 得到处理后的下行控制信息。
5、 如权利要求 1所述的装置, 其特征在于, 所述第一获取模块包括: 第二获取单元, 用于获取所述下行控制信道的重复次数对应的加扰初始化 参数;
第三获取单元, 用于获取所述下行控制信道当前所在的时隙编号和网络侧 获取的身份标识 ID值; 初始化单元, 用于根据所述加扰初始化参数、 所述下行控制信道当前所在 的时隙编号和所述网络侧获取的 ID值初始化序列生成器, 使所述序列生成器生 成加扰序列。
6、 如权利要求 1所述的装置, 其特征在于, 所述装置还包括:
串联模块, 用于在下行控制信息之后串联 CRC比特, 得到比特序列; 信道编码模块, 用于对所述比特序列进行信道编码, 得到编码块; 速率匹配模块, 用于对所述编码块进行速率匹配处理, 得到速率匹配比特。
7、 如权利要求 5或 6所述的装置, 其特征在于, 所述发送模块包括: 第二加扰单元, 用于根据序列生成器生成的加扰序列, 对速率匹配比特进 行加扰, 得到处理后的下行控制信息;
第二发送单元, 用于将处理后的下行控制信息承载在所述下行控制信道中, 并将所述下行控制信道发送给 UE。
8、 如权利要求 6所述的装置, 其特征在于, 所述装置还包括:
调制模块, 用于对所述速率匹配比特进行加扰, 调制, 得到调制符号; 相应地, 所述发送模块包括:
相乘单元, 用于将所述调制符号与所述重复次数对应的加扰序列逐位进行 相乘, 得到处理后的下行控制信息;
第三发送单元, 用于将处理后的下行控制信息承载在所述下行控制信道中, 并将所述下行控制信道发送给 UE。
9、 如权利要求 1所述的装置, 其特征在于, 所述第一获取模块包括: 第四获取单元, 用于获取下行控制信道的重复次数的指示比特;
设置单元, 用于根据所述下行控制信道的重复次数, 设置所述指示比特, 以指示所述重复次数。
10、 如权利要求 9所述的装置, 其特征在于, 所述指示比特为新增的比特 或者为现有的比特。
11、 如权利要求 1所述的装置, 其特征在于, 所述第一获取模块包括: 第五获取单元, 用于获取所述重复次数对应的频域资源, 所述频域资源为 所述控制信道的候选位置或搜索空间。
12、 如权利要求 11所述的装置, 其特征在于, 所述发送模块包括: 承载单元, 用于将所述下行控制信息承载在所述下行控制信道中, 并将所 述下行控制信道承载在所述频域资源上;
第四发送单元, 用于在所述频域资源上, 将所述下行控制信道发送给 UE。
13、 如权利要求 1所述的装置, 其特征在于, 所述发送模块包括: 第五发送单元, 用于向 UE发送配置信令消息, 使所述 UE根据所述配置信 令消息确定预设生效时间后的所述重复次数;
第六发送单元, 用于根据所述重复次数, 将下行控制信息承载在所述下行 控制信道中,在所述预设生效时间到达后,将所述下行控制信道发送给所述 UE。
14、 如权利要求 13所述的装置, 其特征在于, 所述配置信令消息为无线资 源控制 RRC消息或媒体接入控制元素 MAC CE消息。
15、 如权利要求 1所述的装置, 其特征在于, 所述第一获取模块包括: 第六获取单元, 用于根据下行控制信道的重复次数, 获取所述重复次数对 应的子帧集合。
16、 如权利要求 15所述的装置, 其特征在于, 所述发送模块包括: 第七发送单元, 用于在所述重复次数对应的子帧集合内, 将下行控制信息 承载在所述下行控制信道中, 并将所述下行控制信道发送给 UE。
17、 如权利要求 15或 16所述的装置, 其特征在于, 多个重复次数对应的 子帧集合内至少包括一个不重叠的子帧。
18、 如权利要求 1-17任一权利要求所述的装置, 其特征在于, 所述装置还 包括: 配置模块, 用于配置所述下行控制信道的重复次数与数据信道的重复次数 之间的对应关系, 将所述下行控制信道的重复次数与数据信道的重复次数之间 的对应关系发送给所述 UE; 或者,
预设模块, 用于预设下行控制信道的重复次数与数据信道的重复次数之间 的对应关系。
19、 如权利要求 18所述的装置, 其特征在于, 所述装置还包括:
第三获取模块, 用于根据所述下行控制信道的重复次数, 从所述下行控制 信道的重复次数与数据信道的重复次数之间的对应关系中获取对应的数据信道 的重复次数;
第一发送或接收模块, 用于根据所述数据信道的重复次数发送下行数据信 道或接收上行数据信道。
20、 一种确定下行控制信道重复次数的装置, 其特征在于, 所述装置包括: 第一接收模块, 用于接收下行控制信道, 所述下行控制信道用于承载处理 后的下行控制信息, 所述下行控制信息是网络侧根据所述下行控制信道的重复 次数对应的处理信息发送的;
确定模块, 用于根据所述下行控制信道, 确定所述下行控制信道的重复次 数。
21、 如权利要求 20所述的装置, 其特征在于, 所述确定模块包括: 解扰单元, 用于对于已存储的多个重复次数中的任一重复次数, 根据所述 重复次数对应的加扰序列, 对所述下行控制信道承载的处理后的下行控制信息 进行解扰;
校验单元, 用于根据所述下行控制信道承载的下行控制信息对应的循环冗 余校验 CRC比特, 对解扰后的下行控制信息进行校验;
第一确定单元, 用于如果校验成功, 则将所述重复次数确定为所述下行控 制信道的重复次数。
22、 如权利要求 21所述的装置, 其特征在于, 所述解扰单元包括: 第一解扰子单元,用于根据所述重复次数对应的掩码和用户设备 UE的无线 网络临时标识 RNTI, 对所述下行控制信道承载的处理后的下行控制信息中加扰 后的 CRC比特进行解扰。
23、 如权利要求 22所述的装置, 其特征在于, 当配置了天线选择时, 所述 解扰单元包括:
第二解扰子单元, 用于根据所述重复次数对应的掩码以及天线选择掩码和
RNTI,对所述下行控制信道承载的处理后的下行控制信息中加扰后的 CRC比特 进行解扰。
24、 如权利要求 21所述的装置, 其特征在于, 所述解扰单元包括: 初始化子单元, 用于根据所述重复次数对应的加扰初始化参数、 所述下行 控制信道当前所在的时隙编号和所述 UE获取的身份标识 ID值, 初始化序列生 成器, 使所述序列生成器生成加扰序列;
第三解扰子单元, 用于根据所述序列生成器生成的加扰序列, 对所述下行 控制信道承载的处理后的下行控制信息进行解扰。
25、 如权利要求 21所述的装置, 其特征在于, 所述解扰单元包括: 相乘子单元, 用于将所述下行控制信道承载的处理后的下行控制信息对应 的符号与所述重复次数对应的加扰序列逐位进行相乘, 得到解扰后的下行控制 信息。
26、 如权利要求 20所述的装置, 其特征在于, 所述确定模块包括: 第七获取单元, 用于获取所述下行信道中承载的下行控制信息中的指示比 特;
第二确定单元, 用于根据所述指示比特, 确定所述下行控制信道的重复次 数。
27、 如权利要求 26所述的装置, 其特征在于, 所述指示比特为新增的比特 或者为现有的比特。
28、 如权利要求 20所述的装置, 其特征在于, 所述确定模块包括: 第一检测单元, 用于对于已存储的多个重复次数中的任一重复次数, 根据 所述重复次数对应的频域资源, 对所述下行控制信道进行检测, 所述频域资源 为所述下行控制信道的候选位置或搜索空间;
第三确定单元, 用于如果检测成功, 则将所述重复次数确定为所述下行控 制信道的重复次数。
29、 如权利要求 28所述的装置, 其特征在于, 当不同的重复次数位于不同 的搜索空间时, 相邻的搜索空间之间存在偏移。
30、 如权利要求 20所述的装置, 其特征在于, 所述确定模块包括: 接收单元, 用于接收配置信令消息;
第四确定单元, 用于将所述配置信令消息携带的重复次数确定为预设生效 时间后所述下行控制信道的重复次数。
31、 如权利要求 30所述的装置, 其特征在于, 所述配置信令消息为无线资 源控制 RRC消息或媒体接入控制元素 MAC CE消息。
32、 如权利要求 20所述的装置, 其特征在于, 所述确定模块包括: 第八获取单元, 用于对于已存储的多个重复次数中的任一重复次数, 根据 所述重复次数对应的子帧集合, 获取对应的下行控制信道;
第二检测单元, 用于对获取的下行控制信道进行检测;
第五确定单元, 用于如果检测成功, 则将所述重复次数确定为所述下行控 制信道的重复次数。
33、 如权利要求 32所述的装置, 其特征在于, 所述多个重复次数对应的子 帧集合内至少包括一个不重叠的子帧。
34、 如权利要 20-33任一权利要求所述的装置, 其特征在于, 所述装置还包 括:
第四获取模块, 用于根据所述下行控制信道的重复次数, 从已存储的下行 控制信道的重复次数与数据信道的重复次数之间的对应关系中获取数据信道的 重复次数;
第二发送或接收模块, 用于根据所述数据信道的重复次数接收下行数据信 道或发送上行数据信道。
35、 如权利要求 34所述的装置, 其特征在于, 所述装置还包括:
第二接收模块, 用于接收所述下行控制信道的重复次数与数据信道的重复 次数之间的对应关系。
36、 一种确定下行控制信道重复次数的方法, 其特征在于, 所述方法包括: 获取下行控制信道的重复次数对应的处理信息;
根据所述处理信息, 将所述下行控制信道发送给用户设备 UE, 所述下行控 制信道用于承载处理后的下行控制信息,使所述 UE根据所述处理信息确定所述 下行控制信道的重复次数。
37、 如权利要求 36所述的方法, 其特征在于, 所述获取下行控制信道的重 复次数对应的处理信息, 包括:
根据下行控制信道的重复次数, 获取对应的掩码。
38、 如权利要求 37所述的方法, 其特征在于, 所述根据所述处理信息, 将 所述下行控制信道发送给用户设备 UE, 包括:
将所述下行控制信道承载的下行控制信息对应的循环冗余校验码 CRC比特 串联在所述下行控制信息之后, 得到比特序列;
根据掩码和 UE的无线网络临时标识 RNTI对下行控制信道承载的下行控制 信息对应的 CRC比特进行加扰, 得到处理后的下行控制信息;
将所述处理后的下行控制信息承载在所述下行控制信道中, 并将所述下行 控制信道发送给 UE。
39、 如权利要求 38所述的方法, 其特征在于, 所述方法还包括:
当配置了天线选择时, 获取天线选择掩码;
相应地,所述根据掩码和 UE的无线网络临时标识 RNTI对下行控制信道 载的下行控制信息对应的 CRC比特进行加扰, 得到处理后的下行控制信息, 包 括:
根据掩码、所述天线选择掩码和 RNTI对下行控制信道承载的下行控制信息 对应的 CRC比特进行加扰, 得到处理后的下行控制信息。
40、 如权利要求 36所述的方法, 其特征在于, 所述获取下行控制信道的重 复次数对应的处理信息, 包括:
获取所述下行控制信道的重复次数对应的加扰初始化参数;
获取所述下行控制信道当前所在的时隙编号和网络侧获取的身份标识 ID 值;
根据所述加扰初始化参数、 所述下行控制信道当前所在的时隙编号和所述 网络侧获取的 ID值初始化序列生成器, 使所述序列生成器生成加扰序列。
41、 如权利要求 36所述的方法, 其特征在于, 所述根据所述处理信息, 将 所述下行控制信道发送给用户设备 UE之前, 还包括:
在下行控制信息之后串联 CRC比特, 得到比特序列;
对所述比特序列进行信道编码, 得到编码块;
对所述编码块进行速率匹配处理, 得到速率匹配比特。
42、 如权利要求 40或 41所述的方法, 其特征在于, 所述根据所述处理信 息, 将所述下行控制信道发送给用户设备 UE, 包括:
根据序列生成器生成的加扰序列, 对速率匹配比特进行加扰, 得到处理后 的下行控制信息;
将处理后的下行控制信息承载在所述下行控制信道中, 并将所述下行控制 信道发送给 UE。
43、 如权利要求 41所述的方法, 其特征在于, 所述方法还包括:
对所述速率匹配比特进行加扰, 调制, 得到调制符号;
相应地,所述根据所述处理信息,将所述下行控制信道发送给用户设备 UE, 包括:
将所述调制符号与所述重复次数对应的加扰序列逐位进行相乘, 得到处理 后的下行控制信息; 将处理后的下行控制信息承载在所述下行控制信道中, 并将所述下行控制 信道发送给 UE。
44、 如权利要求 36所述的方法, 其特征在于, 所述获取下行控制信道的重 复次数对应的处理信息, 包括:
获取下行控制信道的重复次数的指示比特;
根据所述下行控制信道的重复次数, 设置所述指示比特, 以指示所述重复 次数。
45、 如权利要求 44所述的方法, 其特征在于, 所述指示比特为新增的比特 或者为现有的比特。
46、 如权利要求 36所述的方法, 其特征在于, 所述获取下行控制信道的重 复次数对应的处理信息, 包括:
获取所述重复次数对应的频域资源, 所述频域资源为所述控制信道的候选 位置或搜索空间。
47、 如权利要求 46所述的方法, 其特征在于, 所述根据所述处理信息, 将 所述下行控制信道发送给用户设备 UE, 包括:
将所述下行控制信息承载在所述下行控制信道中, 并将所述下行控制信道 承载在所述频域资源上;
在所述频域资源上, 将所述下行控制信道发送给 UE。
48、 如权利要求 36所述的方法, 其特征在于, 所述根据所述处理信息, 将 所述下行控制信道发送给用户设备 UE, 包括:
向 UE发送配置信令消息,使所述 UE根据所述配置信令消息确定预设生效 时间后的所述重复次数;
根据所述重复次数, 将下行控制信息承载在所述下行控制信道中, 在所述 预设生效时间到达后, 将所述下行控制信道发送给所述 UE。
49、 如权利要求 48所述的方法, 其特征在于, 所述配置信令消息为无线资 源控制 RRC消息或媒体接入控制元素 MAC CE消息。
50、 如权利要求 36所述的方法, 其特征在于, 所述获取下行控制信道的重 复次数对应的处理信息, 包括:
根据下行控制信道的重复次数, 获取所述重复次数对应的子帧集合。
51、 如权利要求 50所述的方法, 其特征在于, 所述根据所述处理信息, 将 所述下行控制信道发送给用户设备 UE, 包括:
在所述重复次数对应的子帧集合内, 将下行控制信息承载在所述下行控制 信道中, 并将所述下行控制信道发送给 UE。
52、 如权利要求 50或 51所述的方法, 其特征在于, 多个重复次数对应的 子帧集合内至少包括一个不重叠的子帧。
53、 如权利要求 36-52任一权利要求所述的方法, 其特征在于, 所述方法还 包括:
配置所述下行控制信道的重复次数与数据信道的重复次数之间的对应关 系, 将所述下行控制信道的重复次数与数据信道的重复次数之间的对应关系发 送给所述 UE; 或者,
预设下行控制信道的重复次数与数据信道的重复次数之间的对应关系。
54、 如权利要求 53所述的方法, 其特征在于, 所述方法还包括:
根据所述下行控制信道的重复次数, 从所述下行控制信道的重复次数与数 据信道的重复次数之间的对应关系中获取对应的数据信道的重复次数;
根据所述数据信道的重复次数发送下行数据信道或接收上行数据信道。
55、 一种确定下行控制信道重复次数的方法, 其特征在于, 所述方法包括: 接收下行控制信道, 所述下行控制信道用于承载处理后的下行控制信息, 所述下行控制信息是网络侧根据所述下行控制信道的重复次数对应的处理信息 发送的;
根据所述下行控制信道, 确定所述下行控制信道的重复次数。
56、如权利要求 55所述的方法, 其特征在于, 所述根据所述下行控制信道, 确定所述下行控制信道的重复次数, 包括:
对于已存储的多个重复次数中的任一重复次数, 根据所述重复次数对应的 加扰序列, 对所述下行控制信道承载的处理后的下行控制信息进行解扰;
根据所述下行控制信道承载的下行控制信息对应的循环冗余校验 CRC 比 特, 对解扰后的下行控制信息进行校验;
如果校验成功, 则将所述重复次数确定为所述下行控制信道的重复次数。
57、 如权利要求 56所述的方法, 其特征在于, 所述根据所述重复次数对应 的加扰序列, 对所述下行控制信道承载的处理后的下行控制信息进行解扰, 包 括:
根据所述重复次数对应的掩码和用户设备 UE的无线网络临时标识 RNTI, 对所述下行控制信道承载的处理后的下行控制信息中加扰后的 CRC比特进行解 扰。
58、 如权利要求 57所述的方法, 其特征在于, 当配置了天线选择时, 所述 根据所述重复次数对应的掩码和用户设备 UE的无线网络临时标识 RNTI, 对所 述下行控制信道承载的处理后的下行控制信息中加扰后的 CRC比特进行解扰, 包括:
根据所述重复次数对应的掩码以及天线选择掩码和 RNTI, 对所述下行控制 信道承载的处理后的下行控制信息中加扰后的 CRC比特进行解扰。
59、 如权利要求 56所述的方法, 其特征在于, 所述根据所述重复次数对应 的加扰序列, 对所述下行控制信道承载的处理后的下行控制信息进行解扰, 包 括:
根据所述重复次数对应的加扰初始化参数、 所述下行控制信道当前所在的 时隙编号和所述 UE获取的身份标识 ID值, 初始化序列生成器, 使所述序列生 成器生成加扰序列;
根据所述序列生成器生成的加扰序列, 对所述下行控制信道承载的处理后 的下行控制信息进行解扰。
60、 如权利要求 56所述的方法, 其特征在于, 所述根据所述重复次数对应 的加扰序列, 对所述下行控制信道承载的处理后的下行控制信息进行解扰, 包 括:
将所述下行控制信道承载的处理后的下行控制信息对应的符号与所述重复 次数对应的加扰序列逐位进行相乘, 得到解扰后的下行控制信息。
61、如权利要求 55所述的方法, 其特征在于, 所述根据所述下行控制信道, 确定所述下行控制信道的重复次数, 包括:
获取所述下行信道中承载的下行控制信息中的指示比特;
根据所述指示比特, 确定所述下行控制信道的重复次数。
62、 如权利要求 61所述的方法, 其特征在于, 所述指示比特为新增的比特 或者为现有的比特。
63、如权利要求 55所述的方法, 其特征在于, 所述根据所述下行控制信道, 确定所述下行控制信道的重复次数, 包括:
对于已存储的多个重复次数中的任一重复次数, 根据所述重复次数对应的 频域资源, 对所述下行控制信道进行检测, 所述频域资源为所述下行控制信道 的候选位置或搜索空间;
如果检测成功, 则将所述重复次数确定为所述下行控制信道的重复次数。
64、 如权利要求 63所述的方法, 其特征在于, 当不同的重复次数位于不同 的搜索空间时, 相邻的搜索空间之间存在偏移。
65、如权利要求 55所述的方法, 其特征在于, 所述根据所述下行控制信道, 确定所述下行控制信道的重复次数, 包括:
接收配置信令消息;
将所述配置信令消息携带的重复次数确定为预设生效时间后所述下行控制 信道的重复次数。
66、 如权利要求 65所述的方法, 其特征在于, 所述配置信令消息为无线资 源控制 RRC消息或媒体接入控制元素 MAC CE消息。
67、如权利要求 55所述的方法, 其特征在于, 所述根据所述下行控制信道, 确定所述下行控制信道的重复次数, 包括:
对于已存储的多个重复次数中的任一重复次数, 根据所述重复次数对应的 子帧集合, 获取对应的下行控制信道;
对获取的下行控制信道进行检测;
如果检测成功, 则将所述重复次数确定为所述下行控制信道的重复次数。
68、 如权利要求 67所述的方法, 其特征在于, 所述多个重复次数对应的子 帧集合内至少包括一个不重叠的子帧。
69、 如权利要 55-68任一权利要求所述的方法, 其特征在于, 所述方法还包 括:
根据所述下行控制信道的重复次数, 从已存储的下行控制信道的重复次数 与数据信道的重复次数之间的对应关系中获取数据信道的重复次数;
根据所述数据信道的重复次数接收下行数据信道或发送上行数据信道。
70、 如权利要求 69所述的方法, 其特征在于, 所述根据所述下行控制信道 的重复次数, 从已存储的下行控制信道的重复次数与数据信道的重复次数之间 的对应关系中获取数据信道的重复次数之前, 还包括:
接收所述下行控制信道的重复次数与数据信道的重复次数之间的对应关 系。
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