WO2013040969A1 - 传输控制信息的方法、用户设备和基站 - Google Patents

传输控制信息的方法、用户设备和基站 Download PDF

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Publication number
WO2013040969A1
WO2013040969A1 PCT/CN2012/080362 CN2012080362W WO2013040969A1 WO 2013040969 A1 WO2013040969 A1 WO 2013040969A1 CN 2012080362 W CN2012080362 W CN 2012080362W WO 2013040969 A1 WO2013040969 A1 WO 2013040969A1
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WIPO (PCT)
Prior art keywords
dci format
codeword
information
data channel
user equipment
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Ceased
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PCT/CN2012/080362
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English (en)
French (fr)
Inventor
官磊
吕永霞
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Huawei Technologies Co Ltd
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Huawei Technologies Co Ltd
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Publication date
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Priority to EP12834470.2A priority Critical patent/EP2747476B1/en
Publication of WO2013040969A1 publication Critical patent/WO2013040969A1/zh
Priority to US14/222,250 priority patent/US9392595B2/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W28/00Network traffic management; Network resource management
    • H04W28/02Traffic management, e.g. flow control or congestion control
    • H04W28/06Optimizing the usage of the radio link, e.g. header compression, information sizing, discarding information
    • 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
    • H04BTRANSMISSION
    • H04B7/00Radio transmission systems, i.e. using radiation field
    • H04B7/02Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/06Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
    • H04B7/0613Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission
    • H04B7/0615Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal
    • H04B7/0619Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal using feedback from receiving side
    • H04B7/0621Feedback content
    • H04B7/063Parameters other than those covered in groups H04B7/0623 - H04B7/0634, e.g. channel matrix rank or transmit mode selection
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04BTRANSMISSION
    • H04B7/00Radio transmission systems, i.e. using radiation field
    • H04B7/02Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/06Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
    • H04B7/0686Hybrid systems, i.e. switching and simultaneous transmission
    • H04B7/0689Hybrid systems, i.e. switching and simultaneous transmission using different transmission schemes, at least one of them being a diversity transmission scheme
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04BTRANSMISSION
    • H04B7/00Radio transmission systems, i.e. using radiation field
    • H04B7/02Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/08Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station
    • H04B7/0868Hybrid systems, i.e. switching and combining
    • H04B7/0871Hybrid systems, i.e. switching and combining using different reception schemes, at least one of them being a diversity reception scheme
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00Arrangements affording multiple use of the transmission path
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00Arrangements for detecting or preventing errors in the information received
    • H04L1/0001Systems modifying transmission characteristics according to link quality, e.g. power backoff
    • H04L1/0033Systems modifying transmission characteristics according to link quality, e.g. power backoff arrangements specific to the transmitter
    • H04L1/0035Systems modifying transmission characteristics according to link quality, e.g. power backoff arrangements specific to the transmitter evaluation of received explicit signalling

Definitions

  • the present invention relates to the field of communications, and more particularly to a method, user equipment and base station for transmitting control information in the field of communications. Background technique
  • an evolved NodeB refers to a user equipment through a Physical Downlink Control Channel (“PDCCH”).
  • PDCCH Physical Downlink Control Channel
  • UE User Equipment
  • the UE demodulates and decodes the PDCCH according to the PDCCH payload size and the Control Channel Element (CCE) level in its specific search space (Search Space), and then uses UE-specific
  • CCE Control Channel Element
  • the scrambling code is used to descramble the Cyclic Redundancy Check (CRC) to verify and determine its own PDCCH, and further process the data channel accordingly.
  • the PDCCH has different downlink control information (Downlink Control Information, referred to as "DCI") format according to the transmission mode of the data channel that it schedules.
  • DCI Downlink Control Information
  • the DCI format 1A indicates that the downlink data channel uses transmit diversity or single antenna port.
  • DCI format 2C represents the transmission mode of closed-loop multiple input multiple output (MIMO).
  • MIMO multiple input multiple output
  • the eNB may configure different transmission modes for the data channel of the UE. In each transmission mode, the eNB may only perform data scheduling on the UE by using the PDCCH of the DCI format corresponding to the transmission mode, for example, two DCI formats corresponding to the transmission mode 9. They are DCI format 2C and DCI format 1A, respectively.
  • the embodiments of the present invention provide a method for transmitting control information, a user equipment, and a base station, which can overcome the problem of control channel congestion and improve the utilization of control channel resources of the system.
  • the embodiment of the present invention provides a method for transmitting control information, where the method includes: acquiring a transmission mode of a data channel configured by a base station; and determining a downlink control information DCI format set corresponding to the transmission mode, where the DCI format set includes a first DCI format, where the first DCI format includes control information of a single codeword; and according to the DCI format set, detecting, by the base station, control signaling corresponding to the DCI format set.
  • an embodiment of the present invention provides a method for transmitting control information, where the method includes: configuring a transmission mode of a data channel; and determining a downlink control information DCI format set corresponding to the transmission mode, where the DCI format set includes the first In the DCI format, the first DCI format includes control information of a single codeword. According to the DCI format set, control signaling corresponding to the DCI format set is sent to the user equipment.
  • the embodiment of the present invention provides a user equipment, where the user equipment includes: a first acquiring module, configured to acquire a transmission mode of a data channel configured by a base station; and a first determining module, configured to determine the first acquiring
  • the downlink control information DCI format set corresponding to the transmission mode obtained by the module the DCI format set includes a first DCI format
  • the first DCI format includes control information of a single codeword
  • the detecting module is configured to determine according to the first determining module
  • the set of DCI formats detects the control signaling sent by the base station corresponding to the DCI format set.
  • the embodiment of the present invention provides a base station, where the base station includes: a configuration module, configured to configure a transmission mode of the data channel; and a first determining module, configured to determine a downlink corresponding to the transmission mode configured by the configuration module a control information DCI format set, the DCI format set includes a first DCI format, where the first DCI format includes control information of a single codeword, and a first sending module, configured to determine, according to the DCI format set determined by the first determining module, The user equipment sends control signaling corresponding to the DCI format set.
  • a configuration module configured to configure a transmission mode of the data channel
  • a first determining module configured to determine a downlink corresponding to the transmission mode configured by the configuration module a control information DCI format set
  • the DCI format set includes a first DCI format, where the first DCI format includes control information of a single codeword
  • a first sending module configured to determine, according to the DCI format set determined by the first determining module, The user equipment sends
  • the method for transmitting control information, the user equipment, and the base station in the embodiment of the present invention can enhance the control channel, reduce the overhead of the control channel, and improve the system scheduling efficiency by using at least two transmission modes of the data channel. Flexibility, and can overcome the problem of control channel blocking and improve the utilization of the system's control channel resources.
  • FIG. 1 is a schematic flowchart of a method of transmitting control information according to an embodiment of the present invention.
  • 2 is another schematic flowchart of a method of transmitting control information according to an embodiment of the present invention.
  • FIG. 3 is still another schematic flowchart of a method for transmitting control information according to an embodiment of the present invention.
  • FIG. 4 is a schematic flowchart of a method of transmitting control information according to another embodiment of the present invention.
  • FIG. 5 is another schematic flowchart of a method for transmitting control information according to another embodiment of the present invention.
  • Figure 6 is a further schematic flow diagram of a method of transmitting control information according to another embodiment of the present invention.
  • FIG. 7 is a schematic block diagram of a user equipment according to an embodiment of the present invention.
  • FIG. 8 is another schematic block diagram of a user equipment according to an embodiment of the present invention.
  • FIG. 9 is still another schematic block diagram of a user equipment according to an embodiment of the present invention.
  • FIG. 10 is a schematic block diagram of a base station according to an embodiment of the present invention.
  • FIG. 11 is a schematic block diagram of a first transmitting module of a base station according to an embodiment of the present invention.
  • FIG. 12 is another schematic block diagram of a base station according to an embodiment of the present invention.
  • FIG. 13 is still another schematic block diagram of a base station according to an embodiment of the present invention.
  • FIG. 14 is a schematic flowchart of a method of transmitting information according to still another embodiment of the present invention.
  • Figure 15 is another schematic flowchart of a method of transmitting information according to still another embodiment of the present invention.
  • Figure 16 is still another schematic flow chart of a method of transmitting information according to still another embodiment of the present invention.
  • Figure 17 is still another schematic flow chart of a method of transmitting information according to still another embodiment of the present invention.
  • FIG. 18 is a schematic block diagram of a user equipment according to another embodiment of the present invention.
  • FIG. 19 is another schematic block diagram of a user equipment according to another embodiment of the present invention.
  • FIG. 20 is a schematic block diagram of a base station according to another embodiment of the present invention.
  • 21 is another schematic block diagram of a base station according to another embodiment of the present invention. detailed description
  • GSM Global System of Mobile communication
  • CDMA Code Division Multiple Access
  • WCDMA Wideband Code Division Multiple Access
  • GPRS General Packet Radio Service
  • LTE Long Term Evolution
  • FDD Frequency Division Duplex
  • TDD Time Division Duplex
  • UMTS Universal Mobile Telecommunication System
  • UE User Equipment
  • MS Mobile Station
  • Mobile Terminal mobile terminal
  • RAN Radio Access Network
  • the user equipment can be a mobile telephone (or "cellular" telephone).
  • Computers with mobile terminals, etc., for example, the user devices can also be portable, pocket-sized, handheld, computer-integrated or in-vehicle mobile devices that exchange voice and/or data with the wireless access network.
  • the base station may be a base station (Base Transceiver Station, referred to as "BTS”) in GSM or CDMA, or may be a base station (NodeB, referred to as "NB") in WCDMA, or may be in LTE.
  • BTS Base Transceiver Station
  • NodeB NodeB
  • eNB evolved Node B
  • e-NodeB evolved Node B
  • FIG. 1 shows a schematic flow chart of a method of transmitting control information according to an embodiment of the present invention. As shown in Figure 1, the method includes:
  • S120 Determine a downlink control information DCI format set corresponding to the transmission mode, where the DCI format set includes a first DCI format, where the first DCI format includes control information of a single codeword.
  • S130. Detect the base station according to the DCI format set. Control signaling sent corresponding to the DCI format set.
  • the user equipment may first obtain a transmission mode of the data channel configured by the base station, and determine a DCI format set corresponding to the control channel that schedules the data channel according to the transmission mode, so that the user equipment may detect, according to the DCI format set, the base station sends the The control signaling corresponding to the DCI format set, and then receiving and transmitting the data channel according to the detected control signaling.
  • the method for transmitting control information in the embodiment of the present invention can enhance the control channel, reduce the overhead of the control channel, improve the scheduling efficiency and flexibility of the system, and overcome the control channel by using at least two transmission modes of the data channel. Blocking problems and increasing the utilization of control channel resources of the system.
  • the user equipment can obtain the number of base station configurations in multiple manners. According to the transmission mode of the channel.
  • the user equipment can acquire, by using the high layer signaling sent by the base station, a transmission mode of the data channel configured by the base station.
  • the user equipment may receive radio resource control (Radio Resource Control, referred to as "RRC") signaling sent by the base station, where the RRC signaling includes a transmission mode of the data channel configured by the base station.
  • RRC Radio Resource Control
  • the user equipment determines a downlink control information DCI format set corresponding to the transmission mode, where the DCI format set includes a first DCI format, where the first DCI format includes a redundancy version of a single codeword, a new data packet finger, and the like.
  • the user equipment detects, according to the DCI format set, control signaling corresponding to the DCI format set sent by the base station.
  • the data channel may include a physical downlink shared channel (Physical Downlink Shared Channel, referred to as "PDSCH”) and a physical uplink shared channel (Physical Uplink Shared Channel (PUSCH));
  • PDSCH Physical Downlink Shared Channel
  • PUSCH Physical Uplink Shared Channel
  • the PDCCH and a Physical Uplink Control Channel (“PUCCH”) may be included.
  • the PDCCH, the PDSCH, and the PUSCH are described as an example in the embodiment of the present invention, but the embodiment of the present invention is not limited thereto.
  • the first DCI format includes identifier information, where the identifier information indicates a first state or a second state, where the first state indicates that the data channel scheduled by the first DCI format is used in a closed loop. And inputting a multi-output MIMO transmission mode, where the second state indicates that the data channel scheduled by the first DCI format uses a transmit diversity or an open-loop single-antenna port transmission mode.
  • the method for transmitting control information according to the embodiment of the present invention may further include:
  • the user equipment when the user equipment detects the control signaling corresponding to the first DCI format, the user equipment acquires the identifier information included in the first DCI format, where the identifier information indicates a first state or a second state, where the first state
  • the data channel indicating the first DCI format scheduling uses a closed-loop multiple-input multiple-output MIMO transmission mode
  • the second state indicates that the data channel scheduled by the first DCI format uses a transmit diversity or an open-loop single-antenna port transmission mode.
  • the closed-loop MIMO transmission mode of the data channel may be based on a UE-specific reference signal (UE-specific Reference Signal, referred to as "UERS”), or may be based on a cell-specific reference signal (Cell-specific Reference Signal, referred to as "" CRS").
  • UERS UE-specific Reference Signal
  • CRS Cell-specific Reference Signal
  • the method according to the embodiment of the present invention indicates that two control modes are enhanced by one DCI format, and the control channel is enhanced, thereby reducing control signaling overhead, improving system scheduling efficiency and flexibility, and overcoming control channel blocking.
  • the first DCI format may include identifier information, where the identifier information may be specifically For the bit information, the 4th code or other time-frequency resource information, the following is an example of the identification information of 1 bit.
  • the bit indicates the first state, for example, the bit value is “0”, the data channel scheduled by the PDCCH signaling corresponding to the first DCI format is closed loop MIMO transmission mode, and the transmission mode can be used in the UE channel. In a scenario where the condition is good or low, the gain of the closed-loop MIMO precoding can be obtained.
  • the bit indicates the second state, for example, the bit value is 'T', the PDCCH signaling corresponding to the first DCI format is indicated.
  • the scheduled data channel is transmitted by using a transmit diversity or an open-loop single-antenna port, and the transmission mode of the transmit diversity may be based on UERS or CRS, and the transmit diversity or open-loop single-antenna port transmission mode may be used in a poor channel condition of the UE. Or in a high-speed mobile application scenario, thereby reducing the precoding gain due to channel state estimation inaccuracy, thereby improving the performance robustness of the control channel, reducing the overhead of the control channel, and the above two transmission modes pass a DCI
  • the format is implemented to simplify the blind detection of the control channel by the user equipment.
  • the user equipment may pass the pre- Configuration, high layer signaling, or physical layer signaling, obtaining antenna port information of the foregoing transmit diversity, where the high layer signaling includes RRC signaling and media access control ("MAC") signaling, the physical layer
  • the signaling includes the PDCCH signaling.
  • the physical layer signaling may specifically be the PDCCH signaling corresponding to the first DCI format.
  • the UERS of the multiple antenna ports can be distinguished by at least one of frequency discrimination and codeword differentiation, thereby simplifying the transmit diversity space.
  • the complexity of the encoding, because the UERS of the frequency division can guarantee that the number of subcarriers on one symbol in a resource block is even.
  • the method for transmitting control information according to the embodiment of the present invention may further include:
  • the user equipment obtains a user equipment specific reference signal UERS for transmitting a diversity transmission manner by using at least one of a frequency distinguishing manner and a codeword distinguishing manner. Thereby, the user equipment can demodulate the data channel transmitted based on the transmit diversity mode according to the UERS.
  • the identifier information may further indicate a first state, where the first state indicates that the data channel scheduled by the first DCI format uses a closed-loop MIMO transmission mode.
  • the first DCI format may further include antenna configuration information, where the antenna configuration information may include one of codeword information, antenna port information, reference signal scrambling code identification information, precoding matrix identification information, and spatial layer number information. kind or more.
  • the user equipment can receive or transmit the corresponding data channel according to the antenna configuration information.
  • the method for transmitting control information may further include:
  • the user equipment receives, according to the antenna configuration information included in the first DCI format, the data channel scheduled by the first DCI format, where the first The data channel scheduled by the DCI format uses a closed-loop MIMO transmission mode, and the antenna configuration information includes at least one of codeword information, antenna port information, reference signal scrambling code identification information, precoding matrix identification information, and spatial layer number information.
  • the codeword information includes a codeword identifier, the codeword identifier indicating a codeword label of data transmitted by the data channel scheduled by the first DCI format. Therefore, it is possible to avoid the acknowledgment of the Hybrid Automatic Repeat Quest (HARQ) (Acknowledge, referred to as "ACK”) / Non-Acknowledge (“NACK”) information. As a result, the understanding of the codewords with the UE is inconsistent, thereby improving the reliability of the system.
  • HARQ Hybrid Automatic Repeat Quest
  • NACK Non-Acknowledge
  • the DCI format set further includes a second DCI format, where the second DCI format includes control information of the dual codeword, and the data channel scheduling based on the second DCI format is based on channel information.
  • a closed-loop MIMO transmission scheme that is precoded and greater than or equal to one layer.
  • the DCI format set may include a first DCI format, where the first DCI format may include identification information, where the identifier information indicates a first state or a second state; the DCI format set may further include a second DCI format, where The second DCI format includes control information of the dual codeword, and the data channel scheduled by the second DCI format uses a closed loop MIMO transmission greater than or equal to one layer, such as DCI format 2C.
  • the base station performs downlink data scheduling on the UE by transmitting the PDCCH signaling corresponding to the second DCI format.
  • the channel condition of the UE is not good, for example, the UE is at the cell edge, the multi-layer transmission power is used at this time.
  • the overhead is large, but if the UE moves at a low speed and the channel state capture is accurate, the base station can use the first DCI format of the single-layer closed-loop MIMO transmission mode for scheduling; if the UE is moving at a high speed, the base station can use the UERS-based The transmit diversity transmission mode, or the open-loop single-antenna port transmission transmission, or the first DCI format based on the truncated CRS transmit diversity mode, the so-called truncated CRS means that the CRS exists only on a part of the bandwidth.
  • the DCI format set further includes a second DCI format, where the second DCI format includes control information of the dual codeword, and is scheduled based on the first DCI format and the second DCI format.
  • the data channel uses a closed-loop MIMO transmission method based on channel information precoding and greater than or equal to one layer.
  • the transmission mode of the data channel configured by the base station corresponds to a downlink DCI format set, where the DCI format set includes a first DCI format and a second DCI format, where the first DCI format includes control information of a single codeword, and the first DCI format
  • the scheduled data channel is pre-programmed based on channel information.
  • a closed-loop MIMO transmission mode of the code and greater than or equal to one layer
  • the second DCI format includes control information of the dual codeword
  • the data channel scheduled by the second DCI format is also precoded based on the channel information, and is greater than Or a closed-loop MIMO transmission method equal to one layer.
  • the second DCI format when used, for example, when DCI format 2C is used for initial transmission double codeword scheduling, if one of the codewords needs to be retransmitted, the other codeword transmission does not need to be retransmitted correctly, and the codeword is In the initial transmission, a multi-layer transmission is used, for example, a transmission greater than or equal to two layers, and in the retransmission scheduling of the codeword that needs to be retransmitted, the first DCI format of the single-layer closed-loop MIMO transmission mode may be used for scheduling. Because the first DCI format includes a single codeword and multiple layers of antenna configuration information, and the payload of the first DCI format is much smaller than the second DCI format, the overhead of the control channel can be saved.
  • the first DCI format may also include the identifier information, where the identifier information indicates a first state or a second state, where the first state indicates that the data channel scheduled by the first DCI format is used in a closed loop. And inputting a multi-output MIMO transmission mode, where the second state indicates that the data channel scheduled by the first DCI format uses a transmit diversity or an open-loop single-antenna port transmission mode.
  • the method for transmitting control information in the embodiment of the present invention may be used to indicate two transmission modes by using the identifier information included in the first DCI format, or the first DCI format and the second DCI format by using the DCI format set corresponding to the transmission mode.
  • the first DCI format and the second DCI format both schedule a data channel using a closed-loop MIMO transmission mode, so that the transmission mode of the data channel corresponds to at least two transmission modes, which can enhance the control channel, reduce the overhead of the control channel, and improve system scheduling. Efficiency and flexibility, and can overcome the problem of control channel blocking and improve the utilization of the system's control channel resources.
  • the first DCI format when the data channel scheduled by the first DCI format is in the closed-loop MIMO transmission mode, that is, when the identifier information included in the first DCI format indicates the first state, the first DCI format may further include an antenna configuration. Information to receive or transmit the data channel scheduled by the first DCI format.
  • the spatial layer number information included in the antenna configuration information may be one or more layers, that is, at least two layers. It should be understood that the multi-layer case only corresponds to the scheduling of the retransmission codeword. The following will be combined with Figure 3, which is specifically described from the scheduling of the downlink and uplink data channels.
  • the method according to the embodiment of the present invention may further include:
  • the user equipment determines, according to the control signaling corresponding to the first DCI format, that the data transmitted by the data channel scheduled by the first DCI format is a retransmission codeword;
  • the user equipment determines, according to the antenna configuration information, that the number of layers occupied by the retransmission codeword is greater than or equal to two layers, or the number of layers occupied by the retransmission codeword and the initial codeword corresponding to the retransmission codeword The number of layers is equal; and/or
  • the user equipment determines, according to the antenna configuration information, that the retransmission codeword uses a pre-configured antenna port, or the retransmission codeword uses an antenna end that is the same as the initial transmission codeword corresponding to the retransmission codeword. Mouth; and/or
  • the user equipment determines, according to the antenna configuration information, that the retransmission codeword uses a pre-configured precoding matrix identifier.
  • the size of the sequence numbers of the foregoing processes does not mean the order of execution sequence, and the execution order of each process should be determined by its function and internal logic, and should not be implemented in the embodiment of the present invention. Form any limit.
  • the retransmission code of the multi-layer transmission is the same as the number of layers of the initial codeword corresponding to the retransmission codeword, and the antenna port and the reference signal scrambling code are used with the pre-configured values or the same as the initial codeword.
  • the first DCI format may further include a codeword identifier, where the retransmission codeword is one of the two codewords corresponding to the initial transmission packet, so as to avoid the base station misdetecting the HARQ ACK.
  • the /NACK information results in inconsistent understanding of the codewords with the UE, thereby improving the reliability of the system.
  • the DCI format set corresponding to the transmission mode of the PDSCH includes the first and second DCI formats, and the first and second DCI formats are the DCI format 1E and the DCI format 2C, respectively.
  • Table 1 shows the antenna configuration information in DCI format 2C, including the configuration information of the single codeword and the double codeword, and the identification states 4, 5 and 6 for the single codeword are the weights corresponding to the multiple layers of the single codeword. Transmission of codewords.
  • Table 2 is the antenna configuration information in the DCI format 1E, in addition to the four indication states including the single codeword single layer, there are two states indicating the identification status of the single codeword multi-layer retransmission, and specifically including the code.
  • the indication of the word identifier, and the number of layers of the retransmission codeword is equal to the number of layers of the initial codeword corresponding to the codeword, and the specific antenna port can be pre-configured, for example, the port is ⁇ 7, 8 ⁇ , and the layer is four layers.
  • the time is port ⁇ 7, 8, 9, 10 ⁇ , etc., and the antenna port can also be the same as the antenna port used for the initial codeword corresponding to the retransmission codeword.
  • the first DCI format such as DCI format 1E, may also notify a specific number of layers from a single codeword to a multi-layer transmission, such as using separate state values to indicate respectively.
  • the base station schedules a total of four layers of initial data packets of the UE by using the DCI format 2C (assuming codeword 0 and codeword 1), and each codeword corresponds to two layers, that is, codeword 0 corresponds to ⁇ 7 , 8 ⁇ two layers of the port, codeword 1 corresponds to the other two layers of the ⁇ 9, 10 ⁇ port, at this time, the antenna configuration information in the DCI format 2C indicates that the state of the dual codeword should be 3, and the UE receives the DCI format 2C. And receiving the corresponding PDSCH according to the antenna configuration information and other scheduling information therein.
  • the UE feeds back the ACK for the codeword 0 and the NACK for the codeword 1.
  • the codeword 1 is retransmitted.
  • the retransmission scheduling can be performed with the DCI format 1E whose payload is smaller than the DCI format 2C, and the antenna configuration information in the DCI format 1E is indicated as the state 5, that is, the retransmission of the codeword 1.
  • the UE receives the DCI format 1E and can determine the retransmission of the codeword 1 according to the antenna configuration information, and the number of layers is equal to the number of layers when the codeword 1 is initially transmitted, that is, two layers, and the antenna port can be preconfigured. ⁇ 7,8 ⁇ can also use the same ⁇ 9,10 ⁇ as the initial transmission, and then the UE receives the retransmitted data packet.
  • the uplink pre-coding matrix needs to be known to the UE, and the number of antenna ports is pre-configured, for example, by RRC signaling, the antenna port label is pre-configured. For example, ⁇ 20, 21 ⁇ is used for two antennas, and ⁇ 40, 41, 42, 43 ⁇ is used for four antennas. Therefore, the information to be indicated in the antenna configuration information should include the information of the precoding matrix and the number of layers.
  • the identifier status of the antenna configuration information in the first DCI format indicates that the codeword of the current retransmission packet is transmitted in multiple layers, the number of layers of the multi-transport retransmission codeword corresponds to the retransmission codeword.
  • the initial codewords occupy the same number of layers.
  • the first DCI format may further include a codeword identifier, indicating that the retransmission codeword is one of the two codewords corresponding to the initial transmission packet, so as to avoid the HARQ due to the base station error detection.
  • ACK/NACK information The understanding of the codewords with the UE is inconsistent, improving the reliability of the system.
  • the DCI format set corresponding to the transmission mode of the PDSCH includes the first and second DCI formats, and the first and second DCI formats are DCI format 4A and DCI format 4, respectively.
  • Table 3 below shows the antenna configuration information in DCI format 4, including the configuration information of the single codeword and the double codeword, and the identification status 24-39 for the single codeword is the retransmission code corresponding to the single codeword multiple layers. The transmission of words.
  • Table 4 shows the antenna configuration information in the DCI format 4A, in addition to the 0-23 indication state including the single codeword single layer, there are two states 24, 25 indicating the identity status of the single codeword multi-layer retransmission, and Specifically, the indication of the codeword identifier is included, and the number of layers of the retransmission codeword is equal to the number of layers of the initial codeword corresponding to the codeword, and the specific transmission precoding matrix identifier may be pre-configured, for example, sending the precoding matrix identifier. .
  • the first DCI format such as DCI format 4A, may also notify a specific number of layers from single codeword to multi-layer transmission, such as using separate state values to indicate respectively.
  • Codeword 0 retransmission (the number of layers is equal to the number of layers when the codeword was first transmitted),
  • Pre-configured transmit precoding matrix identifier eg, identifier 0
  • Codeword 1 retransmission the number of layers is equal to the number of layers when the codeword was first transmitted
  • Pre-configured transmit precoding matrix identifier (eg ID 0)
  • 26-31 Reserved state For example, assume that the base station uses the DCI format 4 to schedule the UE's dual codewords (assuming codeword 0 and codeword 1) for a total of four layers of initial transmission packets, each codeword corresponding to two layers.
  • the antenna configuration information in the DCI format 4 indicates that the state of the dual codeword should be 28, and the UE receives the DCI format 4 and receives the corresponding PUSCH according to the antenna configuration information and other scheduling information therein. If the codeword 0 is received correctly and the codeword 1 receives the error, the base station feeds back the ACK for the codeword 0 and the NACK for the codeword 1.
  • the base station can perform retransmission scheduling with the DCI format 4A whose payload is smaller than the DCI format 4, and the antenna configuration information in the DCI format 4A is indicated as the state 25, that is, the retransmission of the codeword 1.
  • the UE receives the DCI format 4A and determines the retransmission of the codeword 1 according to the antenna configuration information, and the number of layers is equal to the number of layers when the codeword 1 is initially transmitted, that is, two layers, and the precoding matrix identifier can be selected.
  • the configured precoding matrix identifies 0, and then the UE sends the retransmitted data packet.
  • the DCI format set further includes a third DCI format, and the data channel scheduled based on the third DCI format uses a transmission mode based on a transmit diversity or an open loop single antenna port.
  • the third DCI format is located in a common search space, that is, a search space that at least two UEs need to search.
  • the third DCI format may also be located in a UE-specific search space on the primary carrier, but may not be located in a UE-specific search space on the secondary carrier.
  • the UE detects the control signaling corresponding to the first DCI format and the second DCI format in the UE-specific search space, and also needs to detect the third DCI format in the UE-specific search space on the common search space and the primary carrier. Corresponding control signaling, and processing corresponding data channels according to the detected control signaling.
  • the foregoing embodiment can ensure that the number of blind detections of the PDCCH by the UE is not increased compared to the existing system, and the implementation complexity of the UE is not increased.
  • the method for transmitting control information in the embodiment of the present invention can enhance the control channel, reduce the overhead of the control channel, improve the scheduling efficiency and flexibility of the system, and overcome the control channel by using at least two transmission modes of the data channel. Blocking problems and increasing the utilization of control channel resources of the system.
  • the above solution supports dynamic single-layer to multi-layer switching, and includes single-layer initial transmission and retransmission in a single layer, and uses a DCI format with a small load to perform scheduling, which saves PDCCH overhead; Fallback to single antenna port or transmit diversity improves performance robustness.
  • a method for transmitting control information according to an embodiment of the present invention is described in detail from the perspective of a user equipment, and will be described from the perspective of a base station in conjunction with FIG. 4 to FIG. A method of transmitting control information in an embodiment of the present invention.
  • FIG. 4 shows a schematic flow chart of a method of transmitting control information according to an embodiment of the present invention. As shown in Figure 4, the method includes:
  • S320 determining a downlink control information DCI format set corresponding to the transmission mode, where the DCI format set includes a first DCI format, where the first DCI format includes control information of a single codeword, and S330, according to the DCI format set, to the user equipment. Sending control signaling corresponding to the DCI format set.
  • the method for transmitting control information in the embodiment of the present invention can enhance the control channel, reduce the overhead of the control channel, improve the scheduling efficiency and flexibility of the system, and overcome the control channel by using at least two transmission modes of the data channel. Blocking problems and increasing the utilization of control channel resources of the system.
  • the first DCI format includes identifier information, where the identifier information indicates a first state or a second state, where the first state indicates that the data channel scheduled by the first DCI format is used in a closed loop. And inputting a multi-output MIMO transmission mode, where the second state indicates that the data channel scheduled by the first DCI format uses a transmit diversity or an open-loop single-antenna port transmission mode.
  • the base station sends the control signaling corresponding to the DCI format set to the user equipment, which may include:
  • the method further includes:
  • the base station sends, by using at least one of a frequency distinguishing manner and a codeword distinguishing manner, a user equipment specific reference signal UERS for transmitting a diversity transmission manner to the user equipment.
  • the method further includes:
  • the base station receives, according to the antenna configuration information included in the first DCI format, the data channel scheduled by the first DCI format, when the control signaling corresponding to the first DCI format is sent to the user equipment, where
  • the data channel scheduled by the first DCI format uses a closed-loop MIMO transmission mode, and the antenna configuration information includes at least one of codeword information, antenna port information, reference signal scrambling code identification information, precoding matrix identification information, and spatial layer number information.
  • the codeword information includes a codeword identifier, and the codeword identifier indicates a codeword label indicating data transmitted by the data channel scheduled by the first DCI format.
  • This can avoid base station error detection mixed from The retransmission request ACK/NACK information of the HARQ results in inconsistent understanding of the codewords with the UE, thereby improving the reliability of the system.
  • the DCI format set further includes a second DCI format, where the second DCI format includes control information of the dual codeword, and the data channel scheduling based on the second DCI format is based on channel information.
  • a closed-loop MIMO transmission scheme that is precoded and greater than or equal to one layer.
  • the DCI format set may include a first DCI format, where the first DCI format may include identification information, where the identifier information indicates a first state or a second state; the DCI format set may further include a second DCI format, where The second DCI format includes the control information of the dual codeword, and the data channel scheduled by the second DCI format uses a closed-loop MIMO transmission that is greater than or equal to one layer.
  • the DCI format set is further A second DCI format is included, the second DCI format includes control information of the dual codeword, and the data channel scheduled based on the first DCI format and the second DCI format is precoded based on the channel information and greater than or equal to one layer Closed loop MIMO transmission.
  • the transmission mode of the data channel configured by the base station corresponds to a downlink DCI format set, where the DCI format set includes a first DCI format and a second DCI format, where the first DCI format includes control information of a single codeword, and the first
  • the data channel scheduled by the DCI format uses a closed-loop MIMO transmission method based on channel information pre-encoding and greater than or equal to one layer; the second DCI format includes control information of dual codewords, and the data channel scheduled by the second DCI format
  • a closed-loop MIMO transmission method based on channel information precoding and greater than or equal to one layer is also used.
  • the method further includes:
  • the base station determines that the data transmitted by the data channel scheduled by the first DCI format is a retransmission codeword.
  • the base station determines, according to the antenna configuration information, that the number of layers occupied by the retransmission codeword is greater than or equal to two layers, or the number of layers occupied by the retransmission codeword and the initial codeword corresponding to the retransmission codeword The number of layers is equal; and/or
  • the base station determines, according to the antenna configuration information, that the retransmission codeword uses a pre-configured antenna port, or the retransmission codeword uses an antenna port that is the same as the initial transmission codeword corresponding to the retransmission codeword;
  • the base station determines, according to the antenna configuration information, that the retransmission codeword uses a pre-configured precoding matrix identifier.
  • the number of layers occupied by the retransmission codeword and the number of layers occupied by the initial transmission codeword may not be equal, and the antenna port used for the retransmission codeword may also be retransmitted.
  • the antenna port corresponding to the initial codeword corresponding to the codeword is different.
  • the first DCI format such as DCI format 4A, may also notify a specific number of layers from single codeword to multi-layer transmission, such as using independent state values. Do not indicate.
  • the DCI format set further includes a third DCI format, and the data channel scheduled based on the third DCI format uses a transmission mode based on a transmit diversity or an open loop single antenna port.
  • the third DCI format is located in a common search space, that is, a search space that at least two UEs need to search.
  • the third DCI format may also be located in a UE-specific search space on the primary carrier, but may not be located in a UE-specific search space on the secondary carrier.
  • the size of the sequence numbers of the foregoing processes does not mean the order of execution sequence, and the execution order of each process should be determined by its function and internal logic, and should not be implemented in the embodiment of the present invention. Form any limit.
  • the method for transmitting control information in the embodiment of the present invention can enhance the control channel, reduce the overhead of the control channel, improve the scheduling efficiency and flexibility of the system, and overcome the control channel by using at least two transmission modes of the data channel. Blocking problems and increasing the utilization of control channel resources of the system.
  • the above solution supports dynamic single-layer to multi-layer switching, and includes single-layer initial transmission and retransmission in a single layer, and uses a DCI format with a small load to perform scheduling, which saves PDCCH overhead; Fallback to single antenna port or transmit diversity improves performance robustness.
  • FIG. 7 shows a schematic block diagram of a user equipment 500 in accordance with an embodiment of the present invention.
  • the user equipment 500 includes:
  • the first obtaining module 510 is configured to acquire a transmission mode of the data channel configured by the base station, where the first determining module 520 is configured to determine a downlink control information DCI format set corresponding to the transmission mode acquired by the first acquiring module 510, where the DCI is generated.
  • the format set includes a first DCI format, where the first DCI format includes control information of a single codeword;
  • the detecting module 530 is configured to detect, according to the DCI format set determined by the first determining module 520, control signaling corresponding to the DCI format set sent by the base station.
  • the user equipment in the embodiment of the present invention can enhance the control channel, reduce the overhead of the control channel, improve the scheduling efficiency and flexibility of the system, and overcome the problem of control channel congestion by using at least two transmission modes of the data channel. And improve the utilization of the system's control channel resources.
  • the user equipment 500 further includes: a second obtaining module 540, configured to detect, by the detecting module 530, control signaling corresponding to the first DCI format. And acquiring, by the first DCI format, identifier information, where the identifier information indicates a first state or a second state, where the first state indicates a data channel scheduled by the first DCI format
  • the closed-loop multiple-input multiple-output MIMO transmission mode is used, and the second state indicates that the data channel scheduled by the first DCI format uses a transmit diversity or an open-loop single-antenna port transmission mode.
  • the user equipment 500 further includes: a third obtaining module 550, configured to: when the identifier information acquired by the second acquiring module 540 indicates the second state And obtaining, by using at least one of a frequency distinguishing manner and a codeword distinguishing manner, a user equipment specific reference signal UERS for transmitting a diversity transmission manner.
  • a third obtaining module 550 configured to: when the identifier information acquired by the second acquiring module 540 indicates the second state And obtaining, by using at least one of a frequency distinguishing manner and a codeword distinguishing manner, a user equipment specific reference signal UERS for transmitting a diversity transmission manner.
  • the DCI format set determined by the first determining module 520 further includes a second DCI format, where the second DCI format includes control information of the dual codeword, and is scheduled according to the second DCI format.
  • the data channel uses a closed-loop MIMO transmission method based on channel information precoding and greater than or equal to one layer.
  • the DCI format set determined by the first determining module 520 further includes a second DCI format, where the second DCI format includes control information of the dual codeword, and is based on the first DCI format.
  • the data channel scheduled by the second DCI format uses a closed-loop MIMO transmission method based on channel information pre-encoding and greater than or equal to one layer.
  • the user equipment 500 further includes: a transmission module 560, configured to: when the detection module 530 detects the control signaling corresponding to the first DCI format, Receiving or transmitting the data channel scheduled by the first DCI format according to the antenna configuration information included in the first DCI format, where the data channel scheduled by the first DCI format uses a closed-loop MIMO transmission mode, where the antenna configuration information includes a codeword At least one of information, antenna port information, reference signal scrambling code identification information, precoding matrix identification information, and spatial layer number information.
  • a transmission module 560 configured to: when the detection module 530 detects the control signaling corresponding to the first DCI format, Receiving or transmitting the data channel scheduled by the first DCI format according to the antenna configuration information included in the first DCI format, where the data channel scheduled by the first DCI format uses a closed-loop MIMO transmission mode, where the antenna configuration information includes a codeword At least one of information, antenna port information, reference signal scrambling code identification information, precoding matrix identification information, and spatial layer number
  • the codeword information includes a codeword identifier, the codeword identifier indicating a codeword label of data transmitted by the data channel scheduled by the first DCI format.
  • the user equipment 500 further includes: a second determining module 570, configured to use, according to the first DCI format determined by the first determining module 520, Controlling signaling, determining that the data transmitted by the data channel scheduled by the first DCI format is a retransmission codeword;
  • a third determining module 581 configured to: when the second determining module 570 determines that the data transmitted by the data channel scheduled by the first DCI format is a retransmission codeword, determine, according to the antenna configuration information, the retransmission codeword The number of layers is greater than or equal to two layers, or the number of layers occupied by the retransmission codeword is equal to the number of layers occupied by the initial codeword corresponding to the retransmission codeword; and/or
  • the fourth determining module 582 is configured to: when the second determining module 570 determines that the data transmitted by the data channel scheduled by the first DCI format is a retransmission codeword, determine, according to the antenna configuration information, the retransmission codeword usage pre- The configured antenna port, or the retransmitted codeword uses the same antenna port as the initial codeword corresponding to the retransmission codeword; and/or
  • the fifth determining module 583 is configured to: when the second determining module 570 determines that the data transmitted by the data channel scheduled by the first DCI format is a retransmission codeword, determine, according to the antenna configuration information, the retransmission codeword usage pre- The configured precoding matrix identifier.
  • the DCI format set determined by the first determining module 520 further includes a third DCI format, and the data channel scheduled based on the third DCI format is based on a transmit diversity or an open loop single antenna.
  • the mode of transmission of the port is located in a common search space, that is, a search space that at least two UEs need to search.
  • the third DCI format may also be located in a UE-specific search space on the primary carrier, but may not be located in a UE-specific search space on the secondary carrier.
  • the UE detects the control signaling corresponding to the first DCI format and the second DCI format in the UE-specific search space, and also needs to detect the third DCI format in the UE-specific search space on the common search space and the primary carrier. Corresponding control signaling, and processing corresponding data channels according to the detected control signaling.
  • the foregoing embodiment can ensure that the number of blind detections of the PDCCH by the UE is not increased compared to the existing system, and the implementation complexity of the UE is not increased.
  • the user equipment 500 may correspond to a user equipment in a method of transmitting control information according to an embodiment of the present invention, and the above and other operations and/or functions of respective modules in the user equipment 500 respectively implement FIG. 1
  • the corresponding flow to the method in FIG. 3 will not be repeated here for brevity.
  • the identifier information included in the first DCI format may be used to indicate two transmission modes, or the DCI format set corresponding to the transmission mode includes a first DCI format and a second DCI format, where the first DCI is used.
  • Both the format and the second DCI format schedule the data channel using the closed-loop MIMO transmission mode, so that the transmission mode of the data channel corresponds to at least two transmission modes, which can enhance the control channel, reduce the overhead of the control channel, and improve system scheduling efficiency and flexibility. It can overcome the problem of control channel blocking and improve the utilization of control channel resources of the system.
  • FIG. 10 shows a schematic block diagram of a base station 700 in accordance with an embodiment of the present invention.
  • the base station 700 includes:
  • a configuration module 710 configured to configure a transmission mode of the data channel
  • the first determining module 720 is configured to determine a downlink control information DCI format set corresponding to the transmission mode configured by the configuration module 710, where the DCI format set includes a first DCI format, where the first DCI format includes control information of a single codeword ;
  • the first sending module 730 is configured to send, according to the DCI format set determined by the first determining module 720, control signaling corresponding to the DCI format set to the user equipment.
  • the transmission mode through the data channel corresponds to at least two types of transmission parties.
  • the method can enhance the control channel, reduce the overhead of the control channel, improve the system scheduling efficiency and flexibility, and overcome the problem of control channel blocking and improve the utilization of the control channel resources of the system.
  • the first sending module 730 includes: a first sending unit 731, configured to determine, by the first determining module 720, the data channel scheduled by the first DCI format.
  • the user equipment is sent control signaling corresponding to the first DCI format including the identification information, where the identification information indicates the first state; or
  • the second sending unit 732 is configured to send, when the first determining module 720 determines the data channel used by the first DCI format to use the transmit diversity or the open loop single antenna port transmission mode, to send the identifier information to the user equipment. Control signaling corresponding to the first DCI format, the identification information indicating a second state.
  • the base station 700 further includes: a second sending module 740, configured to determine, by the first determining module 720, the data channel used in the first DCI format scheduling.
  • the user equipment specific reference signal UERS for transmitting the diversity transmission mode is sent to the user equipment by using at least one of a frequency division manner and a codeword differentiation manner.
  • the DCI format set determined by the first determining module 720 further includes a second DCI format, where the second DCI format includes control information of the dual codeword, and the data channel scheduled based on the second DCI format is used based on the channel.
  • the DCI format set determined by the first determining module 720 further includes a second DCI format, where the second DCI format includes control information of the dual codeword, and is based on the first DCI format.
  • the data channel scheduled by the second DCI format uses a closed-loop MIMO transmission method based on channel information pre-encoding and greater than or equal to one layer.
  • the base station 700 further includes: a transmission module 750, configured to send, to the user equipment, the first DCI format that is determined by the first determining module 720. Receiving or transmitting the data channel scheduled by the first DCI format according to the antenna configuration information included in the first DCI format, where the data channel scheduled by the first DCI format adopts a closed-loop MIMO transmission mode, where The antenna configuration information includes at least one of codeword information, antenna port information, reference signal scrambling code identification information, precoding matrix identification information, and spatial layer number information.
  • the codeword information includes a codeword identifier, the codeword identifier indicating a codeword label of data transmitted by the data channel scheduled by the first DCI format.
  • the base station 700 further includes: The second determining module 760 is configured to determine that the first determining module 720 determines that the data transmitted by the data channel scheduled by the first DCI format is a retransmission codeword;
  • a third determining module 771 configured to: when the second determining module 760 determines that the data transmitted by the data channel scheduled by the first DCI format is a retransmission codeword, determine, according to the antenna configuration information, the retransmission codeword The number of layers is greater than or equal to two layers, or the number of layers occupied by the retransmission codeword is equal to the number of layers occupied by the initial codeword corresponding to the retransmission codeword; and/or
  • the fourth determining module 772 is configured to: when the second determining module 760 determines that the data transmitted by the data channel scheduled by the first DCI format is a retransmission codeword, determine, according to the antenna configuration information, the retransmission codeword usage pre- The configured antenna port, or the retransmitted codeword uses the same antenna port as the initial codeword corresponding to the retransmission codeword; and/or
  • the fifth determining module 773 is configured to: when the second determining module 760 determines that the data transmitted by the data channel scheduled by the first DCI format is a retransmission codeword, determine, according to the antenna configuration information, the retransmission codeword usage pre- The configured precoding matrix identifier.
  • the DCI format set further includes a third DCI format, and the data channel scheduled based on the third DCI format uses a transmission mode based on a transmit diversity or an open loop single antenna port.
  • the third DCI format is located in a common search space, that is, a search space that at least two UEs need to search.
  • the third DCI format may also be located in a UE-specific search space on the primary carrier, but may not be located in a UE-specific search space on the secondary carrier.
  • the base station 700 may correspond to a base station in a method of transmitting control information according to an embodiment of the present invention, and the above and other operations and/or functions of respective modules in the base station 700 are respectively implemented in order to implement FIGS. 4 to 6
  • the corresponding process of the method in the following, for the sake of brevity, will not be repeated here.
  • the base station of the embodiment of the present invention may be configured to indicate two transmission modes by using the identifier information included in the first DCI format, or the first DCI format and the second DCI format, where the first DCI format is included by the transmission mode.
  • the second DCI format schedules the data channel of the closed-loop MIMO transmission mode, so that the transmission mode of the data channel corresponds to at least two transmission modes, which can enhance the control channel, reduce the overhead of the control channel, and improve system scheduling efficiency and flexibility, and It can overcome the problem of control channel blocking and improve the utilization of control channel resources of the system.
  • the embodiment of the invention further provides a method for transmitting information, a user equipment and a base station, which can overcome the problem of control channel congestion and improve resource utilization of the system.
  • the embodiment of the present invention provides a method for transmitting information, where the method includes: determining a downlink control information DCI format set for detecting control signaling, where the DCI format set includes a first DCI format and a second DCI format,
  • the first control signaling corresponding to the first DCI format includes identification information indicating a first state or a second state, where the first state indicates that the first control signaling is used
  • the second state indicates that the first control signaling is used to indicate resource information of the second control signaling corresponding to the second DCI format; according to the DCI format set and the preset rule, The first control signaling and the second control signaling are detected.
  • the detecting the first control signaling and the second control signaling includes: when the first control signaling is detected, and the identifier information included in the first control signaling indicates the second state And detecting the second control signaling according to the control information in the first control signaling.
  • control information includes information about a control channel unit CCE resource or a resource block RB resource that is occupied by the second control signaling, where the CCE resource does not belong to a search space of the user equipment, and the RB resource does not belong to the base station by using the radio resource. Controlling resources of the second control signaling notified by the RRC signaling.
  • the first DCI format is a DCI format of the backoff scheduling.
  • the second control signaling is based on a cell specific reference signal CRS or a user equipment specific reference signal UERS.
  • the preset rule is predefined or notified by RRC signaling.
  • the method further includes: sending, when the first control signaling is detected, the identifier information indicating the second state, but not detecting the second control signaling, sending the first control signaling to the base station Corresponding acknowledgement ACK information, the channel resource carrying the ACK information corresponding to the channel resource of the first scheduling signaling.
  • the method further includes: when the first control signaling is detected, the identifier information indicates the second state, and when the second control signaling is detected, sending, to the base station, the second control signaling scheduling The data corresponding to the acknowledgement ACK/non-acknowledgement NACK information, and the channel resource carrying the ACK/NACK information corresponds to the channel resource of the second scheduling signaling.
  • an embodiment of the present invention provides a method for transmitting information, where the method includes: determining a downlink control information DCI format set of a user equipment detection control signaling, where the DCI format set includes a first DCI format and a second DCI format.
  • the first control signaling corresponding to the first DCI format includes identification information indicating a first state or a second state, where the first state indicates that the first control signaling is used to schedule transmission of a data channel of the user equipment, where the The second state indicates that the first control signaling is used to indicate resource information of the second control signaling corresponding to the second DCI format; and the first control signaling and/or the second control signaling is sent to the user equipment.
  • the sending the first control signaling and/or the second control signaling to the user equipment including: sending the first control signaling and the second control signaling to the user equipment, where the first The identifier information included in the control signaling indicates the second state, and the control information in the first control signaling is resource information of the second control signaling.
  • control information includes information about a control channel unit CCE resource or a resource block RB resource that is occupied by the second control signaling, where the CCE resource does not belong to a search space of the user equipment.
  • the RB resource does not belong to the resource of the second control signaling notified by the base station by the radio resource control RRC signaling.
  • the method further includes: when sending the first control signaling and the second control signaling to the user equipment, respectively, ACK/ corresponding to the first control signaling and the second control signaling
  • ACK/NACK information sent by the user equipment is detected on the NACK resource.
  • the first DCI format is a DCI format of the backoff scheduling.
  • the second control signaling is based on a cell specific reference signal CRS or a user equipment specific reference signal UERS.
  • the embodiment of the present invention provides a user equipment, where the user equipment includes: a determining module, configured to determine a downlink control information DCI format set for detecting control signaling, where the DCI format set includes a first DCI format and a second DCI format, where the first control signaling corresponding to the first DCI format includes identification information indicating a first state or a second state, where the first state indicates that the first control signaling is used to schedule a data channel of the user equipment.
  • the second state indicates that the first control signaling is used to indicate resource information of the second control signaling corresponding to the second DCI format
  • the detecting module is configured to determine the DCI format set and preset according to the determining module. a rule, detecting the first control signaling and the second control signaling.
  • the detecting module is further configured to: when the first control signaling is detected, and the identifier information included in the first control signaling indicates the second state, according to the control in the first control signaling Information, detecting the second control signaling.
  • control information in the first control signaling that is detected by the detecting module includes information about a control channel unit CCE resource or a resource block RB resource that is occupied by the second control signaling, where the CCE resource does not belong to the user equipment.
  • the search space, the RB resource does not belong to the resource of the second control signaling notified by the base station by the radio resource control RRC signaling.
  • the first DCI format in the DCI format set determined by the determining module is a DCI format of the backoff scheduling.
  • the second control signaling detected by the detecting module is based on a cell-specific reference signal CRS or a user equipment-specific reference signal UERS.
  • the preset rule according to the detection module is predefined, or notified by an RRC signaling.
  • the user equipment further includes: a first sending module, configured to: when the first control signaling is detected and the identifier information indicates the second state, but the second control signaling is not detected, to the base station And sending the acknowledgement ACK information corresponding to the first control signaling, where the channel resource carrying the ACK information corresponds to the channel resource of the first scheduling signaling.
  • a first sending module configured to: when the first control signaling is detected and the identifier information indicates the second state, but the second control signaling is not detected, to the base station And sending the acknowledgement ACK information corresponding to the first control signaling, where the channel resource carrying the ACK information corresponds to the channel resource of the first scheduling signaling.
  • the user equipment further includes: a second sending module, configured to: when the first control signaling is detected, the identifier information indicates the second state, and when the second control signaling is detected, The base station sends the acknowledgement ACK/non-acknowledgement NACK information corresponding to the data scheduled by the second control signaling, and the channel resource carrying the ACK/NACK information corresponds to the channel resource of the second scheduling signaling.
  • a second sending module configured to: when the first control signaling is detected, the identifier information indicates the second state, and when the second control signaling is detected, The base station sends the acknowledgement ACK/non-acknowledgement NACK information corresponding to the data scheduled by the second control signaling, and the channel resource carrying the ACK/NACK information corresponds to the channel resource of the second scheduling signaling.
  • the embodiment of the present invention provides a base station, where the base station includes: a determining module, configured to determine a downlink control information DCI format set of the user equipment detection control signaling, where the DCI format set includes a first DCI format and a second The DCI format, the first control signaling corresponding to the first DCI format includes identification information indicating a first state or a second state, where the first state indicates that the first control signaling is used to schedule transmission of a data channel of the user equipment, The second state indicates that the first control signaling is used to indicate resource information of the second control signaling corresponding to the second DCI format, and the sending module is configured to send, to the user equipment, the DCI format set determined by the determining module. Corresponding to the first control signaling and/or the second control signaling.
  • the sending module is further configured to: send the first control signaling and the second control signaling to the user equipment, where the identifier information included in the first control signaling indicates the second state, and the The control information in a control signaling is resource information of the second control signaling.
  • control information in the first control signaling that is sent by the sending module includes information about a control channel unit CCE resource or a resource block RB resource that is occupied by the second control signaling, where the CCE resource does not belong to the user.
  • the search space of the device, the RB resource does not belong to the resource of the second control signaling notified by the base station by the radio resource control RRC signaling.
  • the base station further includes: a receiving module, configured to: when the first control signaling and the second control signaling are sent to the user equipment, respectively, the first control signaling and the second control signaling The ACK/NACK information sent by the user equipment is detected on the corresponding ACK/NACK resource.
  • a receiving module configured to: when the first control signaling and the second control signaling are sent to the user equipment, respectively, the first control signaling and the second control signaling The ACK/NACK information sent by the user equipment is detected on the corresponding ACK/NACK resource.
  • the first DCI format in the DCI format set determined by the determining module is a DCI format of the backoff scheduling.
  • the second control signaling sent by the sending module is based on a cell-specific reference signal CRS or a user equipment-specific reference signal UERS.
  • the method for transmitting information, the user equipment, and the base station in the embodiment of the present invention include, by the control signaling, identifier information indicating the first state or the second state, to indicate that the control signaling is used to schedule transmission of the data channel. Or for scheduling the transmission of another control channel, so that the control information can be transmitted in a multi-stage scheduling manner, thereby enhancing the control channel, improving system scheduling efficiency and flexibility, and overcoming the problem of control channel blocking, and improving the system. Resource utilization.
  • FIG. 14 shows a schematic flow chart of a method of transmitting information according to an embodiment of the present invention.
  • the method includes: S1110: Determine a downlink control information DCI format set for detecting control signaling, where the DCI format set includes a first DCI format and a second DCI format, where the first control signaling corresponding to the first DCI format includes indicating the first state or The first state indicates that the first control signaling is used to schedule transmission of a data channel of the user equipment, and the second state indicates that the first control signaling is used to indicate that the second DCI format corresponds to Resource information of the second control signaling;
  • S1120 Detect the first control signaling and the second control signaling according to the DCI format set and a preset rule.
  • the method for transmitting information in the embodiment of the present invention includes, by the control signaling, identifier information indicating the first state or the second state, to indicate that the control signaling is used for scheduling transmission of the data channel or for scheduling another control channel.
  • the transmission can transmit control information in a multi-stage scheduling manner, thereby enhancing the control channel, improving system scheduling efficiency and flexibility, and overcoming the problem of control channel congestion and improving system resource utilization.
  • the UE may determine, by using a transmission mode of the data channel configured by the base station, a downlink control information (Downlink Control Information, abbreviated as "DCI") format set to be detected.
  • the DCI format set may include a first DCI format and a second DCI format, where the first control signaling corresponding to the first DCI format includes identification information indicating a first state or a second state, where the first state indicates the first control
  • the signaling is used to schedule the transmission of the data channel of the user equipment, and the second state indicates that the first control signaling is used to indicate resource information of the second control signaling corresponding to the second DCI format.
  • the format set includes DCI format 2C and DCI format 1A.
  • the first DCI format is a DCI format of the back-off scheduling
  • the data channel scheduled by the PDCCH corresponding to the first DCI format uses a transmit diversity or an open-loop single-antenna port mode.
  • transmission for example, the DCI format 1A is a fallback format.
  • the data channel scheduled by the PDCCH corresponding to the DCI format 1A is transmitted by using a transmit diversity or an open loop single antenna port.
  • the identifier information included in the first control signaling may be a bit, a scrambling code, or other time-frequency resource information.
  • the identification information may be a new bit, an existing bit or bit combination, a partial state of an existing bit, such as a partial state of a resource allocation bit, or a partial state of an existing bit combination.
  • the identifier information indicates the first state, that is, the first control signaling is used to schedule transmission of the data channel of the UE, that is, the data channel uses transmit diversity or an open loop single antenna port.
  • the identifier information indicates the second state, that is, the first control signaling is used to indicate resource information of the second control signaling corresponding to the second DCI format. It should be understood that The bit is " ⁇ ”, which may also indicate the first state, and the bit is "0", and may also represent the second state.
  • the embodiment of the present invention is not limited thereto.
  • the user equipment detects the first control signaling and the second control signaling according to the DCI format set and a preset rule.
  • the UE may determine the location of the search space according to the CCE level and the UE's own scrambling code, and detect the DCI format 1A in the search space.
  • the detected bit used in the DCI format 1A is used as the first state, If it is "0", it means that the DCI uses transmit diversity or open-loop single-antenna port mode.
  • the UE also detects the DCI format 2C in the search space, and if detected, receives the data according to the control information in the DCI format 2C.
  • the UE when the UE detects the first control signaling, and the identifier information included in the first control signaling indicates the second state, the UE detects the first information according to the control information in the first control signaling. Two control signaling.
  • the control information in the first control signaling includes information about a control channel unit CCE resource or a resource block RB resource occupied by the second control signaling, where the CCE resource does not belong to The search space of the user equipment, the RB resource does not belong to the resource of the second control signaling notified by the base station by the radio resource control RRC signaling.
  • the second control signaling is based on a Cell-specific Reference Signal (CRS) or a UE-specific Reference Signal (UE-specific Reference Signal, referred to as "UERS").
  • CRS Cell-specific Reference Signal
  • UERS UE-specific Reference Signal
  • the preset rule is predefined or notified by RRC signaling.
  • the pre-configured rule may be predefined without signaling, for example, the UE determines the location of the search space according to the CCE level and the UE's own scrambling code, so that the UE detects the first in the search space.
  • the PDCCH corresponding to the DCI format and the second DCI format; on the other hand, the pre-configured rule may be that the base station is notified by radio resource control (Radio Resource Control, referred to as "RRC"), for example, the base station is configured through RRC signaling.
  • RRC Radio Resource Control
  • the location of the DCI format 2C of the specific CCE level determined by the base station does not have the location of the UE.
  • the search space of the CCE level 4 has no location to schedule the UE, and may consider increasing the CCE level to 8 It can be seen whether there is a level 8 search space and the level 4 can satisfy the performance of the DCI format 2C. At this time, there are four consecutive CCEs available in the PDCCH resource area (although not in the search space of the UE).
  • the DCI format 1A may be selected to be sent to the UE, and the bit used as the identification information in the DCI format 1A is set to "1", indicating that the PDCCH corresponding to the DCI format 1A is used to indicate the resource information occupied by the PDCCH corresponding to the DCI format 2C, and the resource location is the location of the spare CCE level 4, and the UE according to the DCI format 1 A
  • the control information is used to detect the PDCCH corresponding to the DCI format 2C described above.
  • the method for indicating the vacant CCE resource may be indicated according to a mode in which the modulo CCE level is 0.
  • the CCE of the label of 4, 8, 12, 76, in this case requires 5 bits for specific indication, and the indication method for other CCE levels is similar.
  • the method for indicating the vacant CCE resource may be indicated in a manner that the CCE level is 0 as the starting point, that is, any continuous CCE resource may be used as the CCE resource of the required aggregation level.
  • the CCE levels are all 80 possibilities, that is, a total of 320, requiring 9 bits for specific indication. Scalable, the indication method of the vacant CCE resource may further remove the PDCCH candidate location in the UE search space, and further save the required indication bit.
  • the method further includes:
  • the identifier information indicates the second state, and when detecting the second control signaling, sending, to the base station, an acknowledgement ACK corresponding to the data scheduled by the second control signaling.
  • the NACK information is not acknowledged, and the channel resource carrying the ACK/NACK information corresponds to the channel resource of the second scheduling signaling.
  • the UE may feed back the first ACK acknowledgment information corresponding to the PDCCH corresponding to the DCI format, the channel resource carrying the ACK information corresponding to the PDCCH resource corresponding to the first DCI format; or, if the UE receives the PDCCH corresponding to the first DCI format, and the identifier If the information is in the second state, and the UE detects the PDCCH corresponding to the second DCI format, the UE performs downlink data corresponding to the PDCCH corresponding to the second DCI format, and feeds back the acknowledgement ACK/non-acknowledgement NACK corresponding to the downlink data.
  • the channel resource carrying the ACK/NACK information corresponds to the resource of the PDCCH corresponding to the second DCI format. Therefore, the base station can identify whether the UE correctly detects the two PDCCHs, and then accurately adjust the transmission mode to improve system performance.
  • the method for transmitting information in the embodiment of the present invention includes, by the control signaling, identifier information indicating the first state or the second state, to indicate that the control signaling is used for scheduling transmission of the data channel or for scheduling transmission of another control channel. , thereby being able to transmit control information in a multi-stage scheduling manner, thereby enhancing the control channel, improving system scheduling efficiency and flexibility, and being able to overcome the control channel Blocking problems and improving system resource utilization.
  • U-PDCCH UERS-based PDCCH
  • the U-PDCCH is located in a non-PDCCH resource region of the existing LTE system, that is, in the PDSCH region.
  • the resource location of the U-PDCCH of the UE that is, the occupied RB, is notified by the base station to the UE through RRC signaling, so that the dynamic scheduling gain cannot be obtained, that is, if the RRC notified resource is transmitting the U-PDCCH at a certain moment.
  • the base station can schedule a back-off format for the UE, such as DCI format 1A, the identifier information in the DCI format.
  • the second state that is, the DCI format 1A indicates a non-backward DCI format, such as the DCI format 2C, the corresponding U-PDCCH resource, and the resource may not be in the resource notified by the RRC signaling, and the specific indication method is as follows.
  • the dynamic scheduling gain of the U-PDCCH can be provided without performing backoff scheduling.
  • FIG. 16 shows a schematic flow chart of a method of transmitting information according to an embodiment of the present invention. As shown in Figure 16, the method includes:
  • S1210 Determine a downlink control information DCI format set of the user equipment detection control signaling, where the DCI format set includes a first DCI format and a second DCI format, where the first control signaling corresponding to the first DCI format includes indicating the first state or The first state indicates that the first control signaling is used to schedule transmission of a data channel of the user equipment, and the second state indicates that the first control signaling is used to indicate that the second DCI format corresponds to Resource information of the second control signaling;
  • S1220 Send the first control signaling and/or the second control signaling to the user equipment.
  • control information includes information about a control channel unit CCE resource or a resource block RB resource that is occupied by the second control signaling, where the CCE resource does not belong to a search space of the user equipment, and the RB resource does not.
  • the first DCI format is a DCI format of the backoff scheduling.
  • the second control signaling is based on a cell specific reference signal CRS or a user equipment specific reference signal UERS.
  • the identifier information may be a bit, a 4 code, or other time-frequency resource information.
  • the base station sends the first control signaling and the second control signaling to the user equipment, where the identifier information included in the first control signaling indicates the second state, and the first control
  • the control information in the signaling is resource information of the second control signaling.
  • the method further includes:
  • the method for transmitting information in the embodiment of the present invention includes, by the control signaling, identifier information indicating the first state or the second state, to indicate that the control signaling is used for scheduling transmission of the data channel or for scheduling another control channel.
  • the transmission can transmit control information in a multi-stage scheduling manner, thereby enhancing the control channel, improving system scheduling efficiency and flexibility, and overcoming the problem of control channel congestion and improving system resource utilization.
  • FIG. 18 shows a schematic block diagram of a user equipment 1500 in accordance with an embodiment of the present invention.
  • the user equipment 1500 includes:
  • a determining module 1510 configured to determine a downlink control information DCI format set for detecting control signaling, where the DCI format set includes a first DCI format and a second DCI format, where the first control signaling corresponding to the first DCI format includes an indication Identification information of the first state or the second state, where the first state indicates that the first control signaling is used to schedule transmission of a data channel of the user equipment, and the second state indicates that the first control signaling is used to indicate the second Resource information of the second control signaling corresponding to the DCI format;
  • the detecting module 1520 is configured to detect the first control signaling and the second control signaling according to the DCI format set and the preset rule determined by the determining module 1510.
  • the user equipment of the embodiment of the present invention includes, by the control signaling, identifier information indicating the first state or the second state, to indicate that the control signaling is used for scheduling transmission of the data channel or for scheduling transmission of another control channel, thereby
  • the control information can be transmitted in a multi-stage scheduling manner, thereby enhancing the control channel, improving system scheduling efficiency and flexibility, and overcoming the problem of control channel congestion and improving system resource utilization.
  • the detecting module 1520 is further configured to: when the first control signaling is detected, and the identifier information included in the first control signaling indicates the second state, according to the first control signaling Control information, detecting the second control signaling.
  • control information in the first control signaling that is detected by the detecting module 1520 includes information about a control channel unit CCE resource or a resource block RB resource that is occupied by the second control signaling, where the CCE resource does not belong to the user equipment. Search space, the RB resource does not belong to the base station through the wireless resource The source controls the resources of the second control signaling notified by the RRC signaling.
  • the determining, by the determining module 1510, the first DCI format in the DCI format set is a DCI format of a backoff scheduling.
  • the second control signaling detected by the detecting module 1520 is based on a cell-specific reference signal CRS or a user equipment-specific reference signal UERS.
  • the preset rule according to the detecting module 1520 is predefined, or is notified by RRC signaling.
  • the user equipment 1500 further includes: a first sending module 1530, configured to detect the first control signaling, and the identifier information indicates the second state If the second control signaling is not detected, the ACK information corresponding to the first control signaling is sent to the base station, and the channel resource carrying the ACK information corresponds to the channel resource of the first scheduling signaling.
  • a first sending module 1530 configured to detect the first control signaling, and the identifier information indicates the second state If the second control signaling is not detected, the ACK information corresponding to the first control signaling is sent to the base station, and the channel resource carrying the ACK information corresponds to the channel resource of the first scheduling signaling.
  • the user equipment 1500 further includes:
  • the second sending module 1540 is configured to: when the first control signaling is detected, the identifier information indicates the second state, and when the second control signaling is detected, send the second control signaling to the base station
  • the acknowledgement ACK/non-acknowledgement NACK information corresponding to the data, and the channel resource carrying the ACK/NACK information corresponds to the channel resource of the second scheduling signaling.
  • User equipment 1500 may correspond to user equipment in a method of transmitting information according to an embodiment of the present invention, and the above and other operations and/or functions of respective modules in user equipment 1500 are respectively implemented in order to implement FIG. The corresponding flow of the method in FIG. 17 will not be repeated here for brevity.
  • the user equipment of the embodiment of the present invention includes, by the control signaling, identifier information indicating the first state or the second state, to indicate that the control signaling is used for scheduling transmission of the data channel or for scheduling transmission of another control channel, thereby
  • the control information can be transmitted in a multi-stage scheduling manner, thereby enhancing the control channel, improving system scheduling efficiency and flexibility, and overcoming the problem of control channel congestion and improving system resource utilization.
  • FIG. 20 shows a schematic block diagram of a base station 1700 in accordance with an embodiment of the present invention. As shown in FIG. 20, the base station 1700 includes:
  • the determining module 1710 is configured to determine a downlink control information DCI format set of the user equipment detection control signaling, where the DCI format set includes a first DCI format and a second DCI format, where the first control signaling corresponding to the first DCI format includes an indication Identification information of the first state or the second state, where the first state indicates that the first control signaling is used to schedule transmission of a data channel of the user equipment, and the second state indicates that the first control signaling is used to indicate the second Resource information of the second control signaling corresponding to the DCI format;
  • the sending module 1720 is configured to send, to the user equipment, the determined by the determining module 1710.
  • the DCI format sets the corresponding first control signaling and/or the second control signaling.
  • the sending module 1720 is further configured to: send the first control signaling and the second control signaling to the user equipment, where the identifier information included in the first control signaling is The second state, and the control information in the first control signaling is resource information of the second control signaling.
  • the control information in the first control signaling sent by the sending module 1720 includes information about a control channel unit CCE resource or a resource block RB resource occupied by the second control signaling.
  • the CCE resource does not belong to the search space of the user equipment, and the RB resource does not belong to the resource of the second control signaling notified by the base station by using the radio resource control RRC signaling.
  • the base station 1700 further includes: a receiving module 1730, when the first control signaling and the second control signaling are sent to the user equipment, Detecting ACK/NACK information sent by the user equipment on the ACK/NACK resource corresponding to the first control signaling and the second control signaling, respectively.
  • the first DCI format in the DCI format set determined by the determining module 1710 is a DCI format of a backoff scheduling.
  • the second control signaling sent by the sending module 1720 is based on a cell-specific reference signal CRS or a user equipment-specific reference signal UERS.
  • the base station 1700 may correspond to a base station in a method of transmitting information according to an embodiment of the present invention, and the above and other operations and/or functions of respective modules in the base station 1700 are respectively implemented in FIGS. 14 to 17 The corresponding process of the method, for the sake of brevity, will not be repeated here.
  • the base station of the embodiment of the present invention includes, by the control signaling, identifier information indicating the first state or the second state, to indicate that the control signaling is used for scheduling transmission of the data channel or for scheduling transmission of another control channel, thereby enabling
  • the control information is transmitted in a multi-stage scheduling manner, thereby enhancing the control channel, improving system scheduling efficiency and flexibility, and overcoming the problem of control channel congestion and improving system resource utilization.
  • the disclosed systems, devices, and methods may be implemented in other ways.
  • the device embodiments described above are merely illustrative.
  • the division of the unit is only a logical function division.
  • there may be another division manner for example, multiple units or components may be combined or Can be integrated into another system, or some features can be ignored, or not executed.
  • the coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, or an electrical, mechanical or other form of connection. Displayed as a unit; the pieces may be either or not; they may be located in one place, or may be distributed to multiple network elements. Some or all of the units may be selected according to actual needs to achieve the objectives of the embodiments of the present invention.
  • each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.
  • the above integrated unit can be implemented in the form of hardware or in the form of a software functional unit.
  • the integrated unit if implemented in the form of a software functional unit and sold or used as a standalone product, may be stored in a computer readable storage medium.
  • the technical solution of the present invention contributes in essence or to the prior art, or all or part of the technical solution may be embodied in the form of a software product stored in a storage medium.
  • a number of instructions are included to cause a computer device (which may be a personal computer, server, or network device, etc.) to perform all or part of the steps of the methods described in various embodiments of the present invention.
  • the foregoing storage medium includes: u disk, mobile hard disk, read only memory
  • ROM Read-Only Memory
  • RAM random access memory
  • disk or optical disk and other media that can store program code.

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Abstract

本发明公开了一种传输控制信息的方法、用户设备和基站。该方法包括:获取基站配置的数据信道的传输模式;确定与该传输模式对应的下行控制信息DCI格式集合,该DCI格式集合包括第一DCI格式,该第一DCI格式包括单码字的控制信息;根据该DCI格式集合,检测该基站发送的与该DCI格式集合对应的控制信令。该用户设备包括第一获取模块、第一确定模块和检测模块。该基站包括配置模块、第一确定模块和第一发送模块。本发明实施例的传输控制信息的方法、用户设备和基站,通过数据信道的传输模式至少对应两种传输方式,因而能够增强控制信道,减少控制信道的开销,提高系统调度效率和灵活性,并能够克服控制信道阻塞的问题,以及提高系统的控制信道资源的利用率。

Description

传输控制信息的方法、 用户设备和基站 本申请要求于 2011 年 9 月 23 日提交中国专利局、 申请号为 201110285260.4、 发明名称为"传输控制信息的方法、 用户设备和基站"的中 国专利申请的优先权, 其全部内容通过引用结合在本申请中。 技术领域
本发明涉及通信领域, 特别涉及通信领域中传输控制信息的方法、 用 户设备和基站。 背景技术
在长期演进( Long Term Evolution , 简称为 "LTE" ) 系统中, 演进基站 ( evolved NodeB,简称为" eNB" )通过物理下行控制信道( Physical Downlink Control Channel, 简称为 "PDCCH" )对用户设备( User Equipment, 简称为 "UE" )进行上下行数据调度, 调度的最小时间间隔是一个子帧, 一个子帧 的时间长度是 1 毫秒。 UE在其特定的搜索空间 (Search Space ) 内按照 PDCCH 的载荷大小 (Payload Size ) 和控制信道单元 (Control Channel Element, 简称为 "CCE" )等级对 PDCCH进行解调、 解码后, 用 UE特定的 扰码去解扰循环冗余校验码 ( Cyclic Redundancy Check, 简称为 "CRC" ), 以校验并确定自己的 PDCCH, 并进一步对数据信道进行相应处理。
PDCCH根据其所调度的数据信道的传输方式的不同而具有不同的下 行控制信息( Downlink Control Information, 简称为" DCI" )格式, 比如 DCI 格式 1A表示下行数据信道釆用发射分集或单天线端口的方式传输, DCI 格式 2C表示闭环多输入多输出 (Multiple Input Multiple Output, 简称为 "MIMO" ) 的传输方式。 eNB可以给 UE的数据信道配置不同的传输模式, 每种传输模式下, eNB只能用该传输模式所对应的 DCI格式的 PDCCH对 该 UE进行数据调度, 比如传输模式 9对应的两种 DCI格式分别为 DCI格 式 2C和 DCI格式 1A。
当釆用闭环 MIMO传输时, 且 UE处于小区边缘或者 UE处于高速移 动状态, 则需要用较低的编码速率为该 UE发送 PDCCH信令, 由于用于调 度闭环 MIMO传输的 DCI格式 2C的载荷(Payload )较大, 因此用较低的 编码速率会造成 PDCCH的开销增加, PDCCH阻塞概率增加, 并且会降低 系统的控制信道资源的利用率。
因此, 需要相应的技术方案克服控制信道阻塞的问题, 并提高系统的 控制信道资源的利用率。 发明内容
本发明实施例提供了一种传输控制信息的方法、 用户设备和基站, 能 够克服控制信道阻塞的问题, 并提高系统的控制信道资源的利用率。
一方面, 本发明实施例提供了一种传输控制信息的方法, 该方法包括: 获取基站配置的数据信道的传输模式; 确定与该传输模式对应的下行控制 信息 DCI格式集合,该 DCI格式集合包括第一 DCI格式,该第一 DCI格式 包括单码字的控制信息;根据该 DCI格式集合,检测该基站发送的与该 DCI 格式集合对应的控制信令。
另一方面, 本发明实施例提供了一种传输控制信息的方法, 该方法包 括:配置数据信道的传输模式;确定与该传输模式对应的下行控制信息 DCI 格式集合, 该 DCI格式集合包括第一 DCI格式, 该第一 DCI格式包括单码 字的控制信息; 根据该 DCI格式集合, 向用户设备发送与该 DCI格式集合 对应的控制信令。
再一方面, 本发明实施例提供了一种用户设备, 该用户设备包括: 第 一获取模块, 用于获取基站配置的数据信道的传输模式; 第一确定模块, 用于确定与该第一获取模块获取的该传输模式对应的下行控制信息 DCI格 式集合, 该 DCI格式集合包括第一 DCI格式, 该第一 DCI格式包括单码字 的控制信息; 检测模块, 用于根据该第一确定模块确定的该 DCI格式集合, 检测该基站发送的与该 DCI格式集合对应的控制信令。
再一方面, 本发明实施例提供了一种基站, 该基站包括: 配置模块, 用于配置数据信道的传输模式; 第一确定模块, 用于确定与该配置模块配 置的该传输模式对应的下行控制信息 DCI格式集合, 该 DCI格式集合包括 第一 DCI格式, 该第一 DCI格式包括单码字的控制信息; 第一发送模块, 用于根据该第一确定模块确定的该 DCI格式集合,向用户设备发送与该 DCI 格式集合对应的控制信令。
基于上述技术方案, 本发明实施例的传输控制信息的方法、 用户设备 和基站, 通过数据信道的传输模式至少对应两种传输方式, 能够增强控制 信道, 减少控制信道的开销, 提高系统调度效率和灵活性, 并能够克服控 制信道阻塞的问题, 以及提高系统的控制信道资源的利用率。 附图说明
为了更清楚地说明本发明实施例的技术方案, 下面将对本发明实施例 中所需要使用的附图作简单地介绍, 显而易见地, 下面所描述的附图仅仅 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是根据本发明实施例的传输控制信息的方法的示意性流程图。 图 2是根据本发明实施例的传输控制信息的方法的另一示意性流程图。 图 3是根据本发明实施例的传输控制信息的方法的再一示意性流程图。 图 4是根据本发明另一实施例的传输控制信息的方法的示意性流程图。 图 5是^ =艮据本发明另一实施例的传输控制信息的方法的另一示意性流 程图。
图 6是^ =艮据本发明另一实施例的传输控制信息的方法的再一示意性流 程图。
图 7是根据本发明实施例的用户设备的示意性框图。
图 8是根据本发明实施例的用户设备的另一示意性框图。
图 9是根据本发明实施例的用户设备的再一示意性框图。
图 10是根据本发明实施例的基站的示意性框图。
图 11是根据本发明实施例的基站的第一发送模块的示意性框图。
图 12是根据本发明实施例的基站的另一示意性框图。
图 13是根据本发明实施例的基站的再一示意性框图。
图 14是根据本发明再一实施例的传输信息的方法的示意性流程图。 图 15 是根据本发明再一实施例的传输信息的方法的另一示意性流程 图。
图 16 是根据本发明再一实施例的传输信息的方法的再一示意性流程 图。
图 17 是根据本发明再一实施例的传输信息的方法的再一示意性流程 图。
图 18是根据本发明另一实施例的用户设备的示意性框图。
图 19是根据本发明另一实施例的用户设备的另一示意性框图。
图 20是根据本发明另一实施例的基站的示意性框图。
图 21是根据本发明另一实施例的基站的另一示意性框图。 具体实施方式
下面将结合本发明实施例中的附图, 对本发明实施例中的技术方案进行清 楚、 完整地描述, 显然, 所描述的实施例是本发明的一部分实施例, 而不 是全部实施例。 基于本发明中的实施例, 本领域普通技术人员在没有做出 创造性劳动的前提下所获得的所有其他实施例, 都应属于本发明保护的范 围。
应理解, 本发明的技术方案可以应用于各种通信系统, 例如: 全球移 动通讯 ( Global System of Mobile communication, 简称为" GSM" ) 系统、 码 分多址(Code Division Multiple Access, 简称为 "CDMA" ) 系统、 宽带码 多址(Wideband Code Division Multiple Access, 简称为 "WCDMA" ) 系统、 通用分组无线业务( General Packet Radio Service, 简称为" GPRS" )、 长期演 进( Long Term Evolution, 简称为" LTE" ) 系统、 LTE频分双工( Frequency Division Duplex,简称为" FDD" )系统、 LTE时分双工( Time Division Duplex, 简称为 "TDD" )、 通用移动通信系统 ( Universal Mobile Telecommunication System, 简称为 "UMTS" )等。
还应理解,在本发明实施例中,用户设备( User Equipment,简称为" UE" ) 可称之为终端(Terminal ), 移动台 ( Mobile Station, 简称为 "MS" )、 移动终 端 (Mobile Terminal ) 等, 该用户设备可以经无线接入网 (Radio Access Network, 简称为 "RAN" )与一个或多个核心网进行通信, 例如, 用户设备 可以是移动电话 (或称为"蜂窝"电话)、 具有移动终端的计算机等, 例如, 用户设备还可以是便携式、 袖珍式、 手持式、 计算机内置的或者车载的移 动装置, 它们与无线接入网交换语音和 /或数据。
在本发明实施例中, 基站可以是 GSM 或 CDMA 中的基站 (Base Transceiver Station, 简称为" BTS" ), 也可以是 WCDMA中的基站( NodeB, 简称为 "NB" ) , 还可以是 LTE中的演进型基站( Evolutional Node B, 简称 为" eNB或 e-NodeB" ), 本发明并不限定。 但为了描述方便, 下述实施例将 以基站 eNB和用户设备 UE为例进行说明。
图 1示出了根据本发明实施例的传输控制信息的方法的示意性流程图。 如图 1所示, 该方法包括:
S110, 获取基站配置的数据信道的传输模式;
S120, 确定与该传输模式对应的下行控制信息 DCI格式集合, 该 DCI 格式集合包括第一 DCI格式, 该第一 DCI格式包括单码字的控制信息; S130, 根据该 DCI格式集合, 检测该基站发送的与该 DCI格式集合对 应的控制信令。
用户设备首先可以获取基站配置的数据信道的传输模式, 并可以根据 该传输模式确定与调度该数据信道的控制信道对应的 DCI格式集合, 从而 用户设备可以根据该 DCI格式集合, 检测基站发送的与该 DCI格式集合对 应的控制信令, 进而根据检测到的控制信令对数据信道进行接收和发送。
因此, 本发明实施例的传输控制信息的方法, 通过数据信道的传输模 式至少对应两种传输方式, 能够增强控制信道, 减少控制信道的开销, 提 高系统调度效率和灵活性, 并能够克服控制信道阻塞的问题, 以及提高系 统的控制信道资源的利用率。
具体而言, 在 S110中, 用户设备可以通过多种方式获取基站配置的数 据信道的传输模式。 可选地, 用户设备可以通过基站发送的高层信令, 获 取基站配置的数据信道的传输模式。 具体地, 例如, 用户设备可以接收基 站发送的无线资源控制 (Radio Resource Control, 简称为 "RRC" )信令, 该 RRC信令包括基站配置的数据信道的传输模式。
在 S120中,用户设备确定与该传输模式对应的下行控制信息 DCI格式 集合, 该 DCI格式集合包括第一 DCI格式, 该第一 DCI格式包括单码字的 冗余版本、 新数据包指^等控制;言息: 一 、 ^
在 S130 中, 用户设备根据该 DCI格式集合, 检测该基站发送的与该 DCI格式集合对应的控制信令。
应理解, 在本发明实施例中, 数据信道可以包括物理下行共享信道 ( Physical Downlink Shared Channel , 简称为 "PDSCH" )和物理上行共享信 道(Physical Uplink Shared Channel, 简称为 "PUSCH" ) ; 控制信道可以包 括 PDCCH和物理上行控制信道( Physical Uplink Control Channel, 简称为 "PUCCH" )。 本发明实施例以 PDCCH、 PDSCH和 PUSCH为例进行说明, 但本发明实施例并不限于此。
在本发明实施例中, 可选地, 该第一 DCI格式包括标识信息, 该标识 信息指示第一状态或第二状态, 该第一状态表示该第一 DCI格式调度的数 据信道釆用闭环多输入多输出 MIMO 传输方式, 该第二状态表示该第一 DCI格式调度的数据信道釆用发射分集或开环单天线端口传输方式。
因此, 如图 2所示, 根据本发明实施例的传输控制信息的方法还可以 包括:
S140, 在用户设备检测到与该第一 DCI格式对应的控制信令时, 该用 户设备获取该第一 DCI格式包括的标识信息, 该标识信息指示第一状态或 第二状态, 该第一状态表示该第一 DCI格式调度的数据信道釆用闭环多输 入多输出 MIMO传输方式, 该第二状态表示该第一 DCI格式调度的数据信 道釆用发射分集或开环单天线端口传输方式。 可选地, 数据信道釆用的闭 环 MIMO 传输方式可以基于 UE 特定参考信号 (UE-specific Reference Signal , 简称为 "UERS" ) , 也可以基于小区特定参考信号 ( Cell-specific Reference Signal, 简称为 "CRS" ) 。
因此,根据本发明实施例的方法通过一个 DCI格式指示两种传输方式, 对控制信道进行了增强, 由此能够减少控制信令的开销, 提高系统调度效 率和灵活性, 并能够克服控制信道阻塞的问题, 以及提高系统的控制信道 资源的利用率。
具体而言, 该第一 DCI格式中可以包括标识信息, 该标识信息具体可 以为比特信息、 4尤码或其它时频资源信息, 下面以 1 个比特的标识信息为 例进行说明。
当该比特指示第一状态, 例如该比特数值为" 0"时, 表示该第一 DCI格 式对应的 PDCCH信令所调度的数据信道釆用闭环 MIMO传输方式, 这种 传输方式可以用在 UE信道条件较好或低速的应用场景下,从而可以获得闭 环 MIMO预编码的增益; 当该比特指示第二状态, 例如该比特数值为' T' 时, 则表示该第一 DCI格式对应的 PDCCH信令所调度的数据信道釆用发 射分集或开环单天线端口的方式传输, 该发射分集的传输方式可以基于 UERS或 CRS,该发射分集或开环单天线端口传输方式可以用在 UE信道条 件较差或高速移动的应用场景下, 从而可以避免由于信道状态估计不准而 降低预编码增益, 由此能够提高控制信道的性能鲁棒性, 减少控制信道的 开销, 并且上述两种传输方式通过一个 DCI格式来实现, 能够简化用户设 备对控制信道进行的盲检测。
在本发明实施例中, 当第一 DCI格式包括的标识信息指示第二状态, 并且该第二状态表示该第一 DCI格式调度的数据信道釆用发射分集的传输 方式时, 用户设备可以通过预配置、 高层信令或者物理层信令, 获取上述 发射分集的天线端口信息, 该高层信令包括 RRC 信令和媒体接入控制 ( Media Access Control, 简称为 "MAC" )信令, 该物理层信令包括 PDCCH 信令, 例如该物理层信令具体可以为该第一 DCI格式对应的 PDCCH信令。
在本发明实施例中, 如果用户设备釆用基于 UERS 的发射分集传输方 式, 则多个天线端口的 UERS可以通过频率区分和码字区分中的至少一种 方式进行区分, 从而可以简化发射分集空间编码的复杂度, 因为釆用频分 的 UERS可以保证一个资源块内的一个符号上的子载波数目为偶数。
因此, 在本发明实施例中, 可选地, 如图 2所示, 根据本发明实施例 的传输控制信息的方法还可以包括:
S150, 用户设备通过频率区分方式和码字区分方式中的至少一种, 获 取用于发射分集传输方式的用户设备特定参考信号 UERS。从而用户设备可 以根据该 UERS对基于发射分集方式发送的数据信道进行解调。
在本发明实施例中, 该标识信息还可以指示第一状态, 该第一状态表 示该第一 DCI格式调度的数据信道釆用闭环 MIMO传输方式。 此时, 该第 一 DCI格式中还可以包括天线配置信息, 该天线配置信息可以包括码字信 息、 天线端口信息、 参考信号扰码标识信息、 预编码矩阵标识信息和空间 层数信息中的一种或多种。 用户设备根据天线配置信息可以接收或发送相 应的数据信道。
因此, 在本发明实施例中, 可选地, 如图 2所示, 根据本发明实施例 的传输控制信息的方法还可以包括:
S160, 用户设备在检测到与该第一 DCI格式对应的控制信令时, 根据 该第一 DCI格式包括的天线配置信息, 接收或发送该第一 DCI格式调度的 数据信道, 其中, 该第一 DCI格式调度的数据信道釆用闭环 MIMO传输方 式, 该天线配置信息包括码字信息, 天线端口信息、 参考信号扰码标识信 息、 预编码矩阵标识信息和空间层数信息中的至少一种。
可选地, 该码字信息包括码字标识, 该码字标识表示该第一 DCI格式 所调度的数据信道传输的数据的码字标号。 由此可以避免基站错检混合自 动重传请求 (Hybrid Automatic Repeat Quest, 简称为 "HARQ" ) 的确认 ( Acknowledge , 简称为 "ACK" ) /不确认 ( Non- Acknowledge , 简称为 "NACK" )信息而导致与 UE对码字的理解不一致, 从而能够提高系统的可 靠性。
在本发明实施例中, 可选地, 该 DCI格式集合还包括第二 DCI格式, 该第二 DCI格式包括双码字的控制信息, 基于该第二 DCI格式调度的数据 信道釆用基于信道信息预编码的且大于或等于一层的闭环 MIMO传输方 式。
具体而言, DCI格式集合可以包括第一 DCI格式, 该第一 DCI格式可 以包括的标识信息, 该标识信息指示第一状态或第二状态; 该 DCI格式集 合还可以包括第二 DCI格式, 该第二 DCI格式包括双码字的控制信息, 该 第二 DCI格式所调度的数据信道釆用大于或等于一层的闭环 MIMO传输, 例如 DCI格式 2C。 当 UE信道条件较好时,基站通过发送该第二 DCI格式 对应的 PDCCH信令对 UE进行下行数据调度; 当 UE信道条件不是很好, 例如 UE处于小区边缘时, 此时用多层传输功率开销较大, 但如果 UE低速 移动, 信道状态捕捉较准确, 那么基站可以釆用单层闭环 MIMO传输方式 的第一 DCI格式进行调度; 如果 UE处于高速移动, 则基站就可以釆用基 于 UERS 的发射分集传输方式, 或开环单天线端口传输发送, 或基于截短 的 CRS的发射分集方式的第一 DCI格式进行调度, 所谓截短的 CRS是指 CRS只存在于部分带宽上。
在本发明实施例中, 可选地, 该 DCI格式集合还包括第二 DCI格式, 该第二 DCI格式包括双码字的控制信息, 并且基于该第一 DCI格式和该第 二 DCI格式调度的数据信道釆用基于信道信息预编码的且大于或等于一层 的闭环 MIMO传输方式。
即, 基站配置的数据信道的传输模式对应下行 DCI格式集合, 该 DCI 格式集合包括第一 DCI格式和第二 DCI格式,该第一 DCI格式包括单码字 的控制信息, 并且该第一 DCI格式调度的数据信道釆用基于信道信息预编 码的、 且大于或等于一层的闭环 MIMO传输方式; 该第二 DCI格式包括双 码字的控制信息, 并且该第二 DCI格式调度的数据信道也釆用基于信道信 息预编码的、 且大于或等于一层的闭环 MIMO传输方式。
例如, 当釆用第二 DCI格式, 例如釆用 DCI格式 2C进行初传双码字 调度时, 如果其中一个码字需要重传, 另一个码字传输正确不需要重传, 并且该码字在初传时釆用了多层传输, 例如大于或等于两层的传输, 则在 这个需要重传的码字的重传调度时, 可以釆用单层闭环 MIMO传输方式的 第一 DCI格式进行调度, 因为该第一 DCI格式中包括了单码字且多层的天 线配置信息, 且该第一 DCI格式的载荷较该第二 DCI格式的要小得多, 因 此能够节省控制信道的开销。
应理解, 在上述实施例中, 该第一 DCI格式也可以包括标识信息, 该 标识信息指示第一状态或第二状态, 该第一状态表示该第一 DCI格式调度 的数据信道釆用闭环多输入多输出 MIMO传输方式, 该第二状态表示该第 一 DCI格式调度的数据信道釆用发射分集或开环单天线端口传输方式。
因此, 本发明实施例的传输控制信息的方法, 通过第一 DCI格式包括 的标识信息可以用于指示两种传输方式, 或通过传输模式对应的 DCI格式 集合包括第一 DCI格式和第二 DCI格式,该第一 DCI格式和第二 DCI格式 都调度釆用闭环 MIMO传输方式的数据信道, 使得数据信道的传输模式至 少对应两种传输方式, 能够增强控制信道, 减少控制信道的开销, 提高系 统调度效率和灵活性, 并能够克服控制信道阻塞的问题, 以及提高系统的 控制信道资源的利用率。
在本发明实施例中, 当第一 DCI格式调度的数据信道釆用闭环 MIMO 传输方式时, 即该第一 DCI格式包括的标识信息指示第一状态时, 该第一 DCI格式还可以包括天线配置信息, 以接收或发送该第一 DCI格式调度的 数据信道。 其中, 该天线配置信息包括的空间层数信息可以为一层或多层, 即至少两层, 应理解, 多层的情况只对应于对重传码字的调度。 下面将结 合图 3 , 分别从下行和上行数据信道的调度来具体描述。
如图 3所示, 根据本发明实施例的方法还可以包括:
S210, 用户设备根据与该第一 DCI格式对应的该控制信令, 确定该第 一 DCI格式调度的数据信道传输的数据为重传码字;
S220, 用户设备根据该天线配置信息, 确定该重传码字所占的层数大 于或等于两层, 或该重传码字所占的层数与该重传码字对应的初传码字所 占的层数相等; 和 /或
S230, 用户设备根据该天线配置信息, 确定该重传码字釆用预配置的 天线端口, 或该重传码字釆用与该重传码字对应的初传码字相同的天线端 口; 和 /或
S240 , 用户设备根据该天线配置信息, 确定该重传码字釆用预配置的 预编码矩阵标识。
应理解, 在本发明实施例中, 上述各过程的序号的大小并不意味着执 行顺序的先后, 各过程的执行顺序应以其功能和内在逻辑确定, 而不应对 本发明实施例的实施过程构成任何限定。
具体而言, 对于下行数据信道的调度, 当第一 DCI格式中的该天线配 置信息的标识状态指示了当前重传包的码字釆用多层传输时, 则该多层传 输的重传码字的层数与该重传码字对应的初传码字所占的层数相同, 而天 线端口和参考信号扰码标识釆用预配置的取值或者与初传码字的相同。 可 选地, 该第一 DCI格式中还可以包括码字标识, 表示该重传码字是对应于 初传包的两个码字中的哪一个码字, 这样可以避免由于基站错检 HARQ ACK/NACK信息而导致与 UE对码字的理解不一致, 从而可以提高系统的 可靠性。
具体地, 假设 PDSCH的传输模式对应的 DCI格式集合包括第一和第 二 DCI格式, 该第一和第二 DCI格式分别为 DCI格式 1E和 DCI格式 2C。 下面的表 1为 DCI格式 2C中的天线配置信息,其中包括单码字和双码字的 配置信息,且对于单码字的标识状态 4,5和 6是表示单码字多层对应的重传 码字的传输。表 2为 DCI格式 1E中的天线配置信息,其中除了包括单码字 单层的四个指示状态之外, 还有两个状态表示单码字多层重传的标识状态, 还具体包括了码字标识的指示, 且重传码字的层数与该码字对应的初传码 字的层数相等, 具体的天线端口可以预配置, 比如两层时为端口 {7,8} , 四 层时为端口 {7,8,9,10}等, 天线端口还可以与该重传码字对应的初传码字釆 用的天线端口相同。 可选地, 第一 DCI格式, 如 DCI格式 1E, 还可以通知 单码字到多层传输的具体的层数, 比如釆用独立的状态值来分别指示。
表 1
单码字 双码字
状态值 天线配置信息 状态值 天线配置信息
0 单层, 端口 7 , 扰码 0 0 两层, 端口 7-8, 扰码 0
1 单层, 端口 7 , 扰码 1 1 两层, 端口 7-8, 扰码 1
2 单层, 端口 8 , 扰码 0 2 三层, 端口 7-9, 扰码 0
3 单层, 端口 8 , 扰码 1 3 四层, 端口 7-10, 扰码 0
4 两层, 端口 7-8, 扰码 0 4 五层, 端口 7-11 , 扰码 0
5 三层, 端口 7-9, 扰码 0 5 六层, 端口 7-12, 扰码 0
6 四层, 端口 7-10 , 扰码 0 6 七层, 端口 7-13 , 扰码 0 7 保留状态 7 八层, 端口 7-14, 扰码 0 表 2
Figure imgf000011_0001
举例说明, 假设基站用 DCI格式 2C调度了 UE的双码字(假设码字 0 和码字 1 )总共四层的初传数据包,每个码字对应两层, 即码字 0对应 {7,8} 端口的两层, 码字 1对应 {9,10}端口的另外两层, 此时 DCI格式 2C中的天 线配置信息指示应为双码字的状态 3 , UE接收到该 DCI格式 2C且根据其 中的天线配置信息和其他调度信息, 来接收相应的 PDSCH。 如果码字 0接 收正确而码字 1接收错误,则 UE对码字 0反馈 ACK而对码字 1反馈 NACK, 基站正确接收该 ACK和 NACK后, 会对码字 1进行重传调度。 此时可以 用载荷比 DCI格式 2C小的 DCI格式 1E进行重传调度, 且 DCI格式 1E中 的天线配置信息指示为状态 5 , 即码字 1的重传。 UE接收到该 DCI格式 1E 并根据该天线配置信息, 可以确定码字 1的重传, 且层数与码字 1初传时 的层数相等, 即两层, 且天线端口可以釆用预配置的 {7,8} , 也可以釆用与 初传相同的 {9,10} , 接着 UE接收该重传数据包。
具体而言, 对于上行数据信道的调度, 由于上行调度的发送预编码矩 阵对于 UE是必须知道的, 而天线端口数是预配置的, 比如通过 RRC信令 通知, 天线端口标号是预配置的, 比如两天线时釆用 {20,21 } , 四天线时釆 用 {40,41,42,43} ,所以天线配置信息中需要指示的信息应该包括发送预编码 矩阵标识和层数信息。 当第一 DCI格式中的该天线配置信息的标识状态指 示了当前重传包的码字釆用多层传输时, 则该多层传输的重传码字的层数 与该重传码字对应的初传码字所占的层数相同。 可选地, 该第一 DCI格式 中还可以包括码字标识, 表示了该重传码字是对应于初传包的两个码字中 的哪一个码字,这样可以避免由于基站错检 HARQ ACK/NACK信息而导致 与 UE对码字的理解不一致, 提高系统的可靠性。
具体地, 假设 PDSCH的传输模式对应的 DCI格式集合包括第一和第 二 DCI格式, 该第一和第二 DCI格式分别为 DCI格式 4A和 DCI格式 4。 下面的表 3为 DCI格式 4中的天线配置信息, 其中包括单码字和双码字的 配置信息,且对于单码字的标识状态 24-39是表示单码字多层对应的重传码 字的传输。 表 4为 DCI格式 4A中的天线配置信息, 其中除了包括单码字 单层的 0-23指示状态之外, 还有两个状态 24,25表示单码字多层重传的标 识状态, 还具体包括了码字标识的指示, 且重传码字的层数与该码字对应 的初传码字的层数相等, 具体的发送预编码矩阵标识可以预配置, 例如发 送预编码矩阵标识 0。 可选地, 第一 DCI格式, 如 DCI格式 4A, 还可以通 知单码字到多层传输的具体的层数, 比如釆用独立的状态值来分别指示。
表 3
Figure imgf000012_0001
表 4
单码字
状态值 天线配置信息
0 单层, 发送预编码矩阵标识 0
1 单层, 发送预编码矩阵标识 1
23 单层, 发送预编码矩阵标识 23
码字 0重传 (层数与该码字初传时的层数相等),
24
预配置的发送预编码矩阵标识 (如标识 0) 码字 1重传 (层数与该码字初传时的层数相等),
25
预配置的发送预编码矩阵标识 (如标识 0)
26-31 保留状态 举例说明, 假设基站用 DCI格式 4调度了 UE的双码字 (假设码字 0 和码字 1 ) 总共四层的初传数据包, 每个码字对应两层。 此时 DCI格式 4 中的天线配置信息指示应为双码字的状态 28, UE接收到该 DCI格式 4且 根据其中的天线配置信息和其他调度信息, 来接收相应的 PUSCH。 如果码 字 0接收正确而码字 1接收错误, 则基站对码字 0反馈 ACK而对码字 1反 馈 NACK, UE正确接收该 ACK和 NACK后, 会继续对码字 1进行后续的 重传。此时基站可以用载荷比 DCI格式 4小的 DCI格式 4A进行重传调度, 且 DCI格式 4A中的天线配置信息指示为状态 25, 即码字 1的重传。 UE接 收到该 DCI格式 4A并根据该天线配置信息, 可以确定码字 1的重传, 且 层数与码字 1 初传时的层数相等, 即两层, 且预编码矩阵标识可以选取预 配置的预编码矩阵标识 0, 接着 UE发送该重传数据包。
在本发明实施例中, 可选地, 该 DCI格式集合还包括第三 DCI格式, 基于该第三 DCI格式调度的数据信道釆用基于发射分集或开环单天线端口 的传输方式。 可选地, 该第三 DCI格式位于公共搜索空间, 即至少两个 UE 都需要搜索的搜索空间。 可选地, 该第三 DCI格式还可以位于主载波上的 UE特定搜索空间, 但不可以位于辅载波上的 UE特定搜索空间。
具体地, UE在该 UE特定的搜索空间中检测第一 DCI格式和第二 DCI 格式对应的控制信令,而且还需要在公共搜索空间和主载波上的 UE特定搜 索空间中检测第三 DCI格式对应的控制信令, 并根据检测到的控制信令处 理相应的数据信道。
上述实施例能够保证 UE对 PDCCH的盲检测次数相比于已有系统不增 加, 并且不增加 UE的实现复杂度。
因此, 本发明实施例的传输控制信息的方法, 通过数据信道的传输模 式至少对应两种传输方式, 能够增强控制信道, 减少控制信道的开销, 提 高系统调度效率和灵活性, 并能够克服控制信道阻塞的问题, 以及提高系 统的控制信道资源的利用率。 并且上述方案支持了动态的单层到多层的切 换, 且单层时, 包括单层的初传和重传, 釆用载荷较小的 DCI格式进行调 度,节省了 PDCCH开销;且还支持动态回退到单天线端口或发射分集方式, 提高了性能鲁棒性。
上文中结合图 1至图 3 ,从用户设备的角度详细描述了根据本发明实施 例的传输控制信息的方法, 下面将结合图 4至图 6,从基站的角度描述根据 本发明实施例的传输控制信息的方法。
图 4示出了根据本发明实施例的传输控制信息的方法的示意性流程图。 如图 4所示, 该方法包括:
S310, 配置数据信道的传输模式;
S320, 确定与该传输模式对应的下行控制信息 DCI格式集合, 该 DCI 格式集合包括第一 DCI格式, 该第一 DCI格式包括单码字的控制信息; S330, 根据该 DCI格式集合, 向用户设备发送与该 DCI格式集合对应 的控制信令。
因此, 本发明实施例的传输控制信息的方法, 通过数据信道的传输模 式至少对应两种传输方式, 能够增强控制信道, 减少控制信道的开销, 提 高系统调度效率和灵活性, 并能够克服控制信道阻塞的问题, 以及提高系 统的控制信道资源的利用率。
在本发明实施例中, 可选地, 该第一 DCI格式包括标识信息, 该标识 信息指示第一状态或第二状态, 该第一状态表示该第一 DCI格式调度的数 据信道釆用闭环多输入多输出 MIMO 传输方式, 该第二状态表示该第一 DCI格式调度的数据信道釆用发射分集或开环单天线端口传输方式。
因此,在 S330中,基站向用户设备发送与该 DCI格式集合对应的控制 信令, 可以包括:
基站在确定该第一 DCI格式调度的数据信道釆用闭环多输入多输出 MIMO传输方式时, 向该用户设备发送与包括标识信息的该第一 DCI格式 对应的控制信令, 该标识信息指示第一状态; 或
基站在确定该第一 DCI格式调度的数据信道釆用发射分集或开环单天 线端口传输方式时, 向该用户设备发送与包括标识信息的该第一 DCI格式 对应的控制信令, 该标识信息指示第二状态。
在本发明实施例中, 如图 5所示, 可选地, 该方法还包括:
S340, 基站通过频率区分方式和码字区分方式中的至少一种, 向该用 户设备发送用于发射分集传输方式的用户设备特定参考信号 UERS。
在本发明实施例中, 如图 5所示, 可选地, 该方法还包括:
S350 ,基站在向该用户设备发送与该第一 DCI格式对应的控制信令时 , 根据该第一 DCI格式包括的天线配置信息, 接收或发送该第一 DCI格式调 度的数据信道, 其中, 该第一 DCI格式调度的数据信道釆用闭环 MIMO传 输方式, 该天线配置信息包括码字信息, 天线端口信息、 参考信号扰码标 识信息、 预编码矩阵标识信息和空间层数信息中的至少一种。
可选地, 该码字信息包括码字标识, 该码字标识表示该第一 DCI格式 所调度的数据信道传输的数据的码字标号。 由此可以避免基站错检混合自 动重传请求 HARQ的 ACK/ NACK信息而导致与 UE对码字的理解不一致 , 从而能够提高系统的可靠性。
在本发明实施例中, 可选地, 该 DCI格式集合还包括第二 DCI格式, 该第二 DCI格式包括双码字的控制信息, 基于该第二 DCI格式调度的数据 信道釆用基于信道信息预编码的且大于或等于一层的闭环 MIMO传输方 式。
具体而言, DCI格式集合可以包括第一 DCI格式, 该第一 DCI格式可 以包括的标识信息, 该标识信息指示第一状态或第二状态; 该 DCI格式集 合还可以包括第二 DCI格式, 该第二 DCI格式包括双码字的控制信息, 该 第二 DCI格式所调度的数据信道釆用大于或等于一层的闭环 MIMO传输, 在本发明实施例中, 可选地, 该 DCI格式集合还包括第二 DCI格式, 该第二 DCI格式包括双码字的控制信息, 并且基于该第一 DCI格式和该第 二 DCI格式调度的数据信道釆用基于信道信息预编码的且大于或等于一层 的闭环 MIMO传输方式。
具体而言, 基站配置的数据信道的传输模式对应下行 DCI格式集合, 该 DCI格式集合包括第一 DCI格式和第二 DCI格式,该第一 DCI格式包括 单码字的控制信息, 并且该第一 DCI格式调度的数据信道釆用基于信道信 息预编码的、 且大于或等于一层的闭环 MIMO传输方式; 该第二 DCI格式 包括双码字的控制信息, 并且该第二 DCI格式调度的数据信道也釆用基于 信道信息预编码的、 且大于或等于一层的闭环 MIMO传输方式。
在本发明实施例中, 如图 6所示, 可选地, 该方法还包括:
S410, 基站确定该第一 DCI格式调度的数据信道传输的数据为重传码 字;
S420, 基站根据该天线配置信息, 确定该重传码字所占的层数大于或 等于两层, 或该重传码字所占的层数与该重传码字对应的初传码字所占的 层数相等; 和 /或
S430, 基站根据该天线配置信息, 确定该重传码字釆用预配置的天线 端口, 或该重传码字釆用与该重传码字对应的初传码字相同的天线端口; 和 /或
S440, 基站根据该天线配置信息, 确定该重传码字釆用预配置的预编 码矩阵标识。
应理解, 该重传码字所占的层数与该重传码字对应的初传码字所占的 层数也可以不相等, 该重传码字釆用的天线端口也可以与重传码字对应的 初传码字釆用的天线端口不同。 可选地, 第一 DCI格式, 如 DCI格式 4A, 还可以通知单码字到多层传输的具体的层数, 比如釆用独立的状态值来分 别指示。
在本发明实施例中, 可选地, 该 DCI格式集合还包括第三 DCI格式, 基于该第三 DCI格式调度的数据信道釆用基于发射分集或开环单天线端口 的传输方式。 可选地, 该第三 DCI格式位于公共搜索空间, 即至少两个 UE 都需要搜索的搜索空间。 可选地, 该第三 DCI格式还可以位于主载波上的 UE特定搜索空间, 但不可以位于辅载波上的 UE特定搜索空间。
应理解, 在本发明实施例中, 上述各过程的序号的大小并不意味着执 行顺序的先后, 各过程的执行顺序应以其功能和内在逻辑确定, 而不应对 本发明实施例的实施过程构成任何限定。
因此, 本发明实施例的传输控制信息的方法, 通过数据信道的传输模 式至少对应两种传输方式, 能够增强控制信道, 减少控制信道的开销, 提 高系统调度效率和灵活性, 并能够克服控制信道阻塞的问题, 以及提高系 统的控制信道资源的利用率。 并且上述方案支持了动态的单层到多层的切 换, 且单层时, 包括单层的初传和重传, 釆用载荷较小的 DCI格式进行调 度,节省了 PDCCH开销;且还支持动态回退到单天线端口或发射分集方式, 提高了性能鲁棒性。
上文中结合图 1至图 6,详细描述了根据本发明实施例的传输控制信息 的方法, 下面将结合图 7至图 13 , 详细描述根据本发明实施例的用户设备 和基站。
图 7示出了根据本发明实施例的用户设备 500的示意性框图。 如图 7 所示, 该用户设备 500包括:
第一获取模块 510, 用于获取基站配置的数据信道的传输模式; 第一确定模块 520,用于确定与该第一获取模块 510获取的该传输模式 对应的下行控制信息 DCI格式集合, 该 DCI格式集合包括第一 DCI格式, 该第一 DCI格式包括单码字的控制信息;
检测模块 530, 用于根据该第一确定模块 520确定的该 DCI格式集合, 检测该基站发送的与该 DCI格式集合对应的控制信令。
因此, 本发明实施例的用户设备, 通过数据信道的传输模式至少对应 两种传输方式, 能够增强控制信道, 减少控制信道的开销, 提高系统调度 效率和灵活性, 并能够克服控制信道阻塞的问题, 以及提高系统的控制信 道资源的利用率。
在本发明实施例中, 可选地, 如图 8所示, 该用户设备 500还包括: 第二获取模块 540, 用于在该检测模块 530检测到与该第一 DCI格式 对应的控制信令时, 获取该第一 DCI格式包括的标识信息, 该标识信息指 示第一状态或第二状态, 该第一状态表示该第一 DCI格式调度的数据信道 釆用闭环多输入多输出 MIMO传输方式 , 该第二状态表示该第一 DCI格式 调度的数据信道釆用发射分集或开环单天线端口传输方式。
在本发明实施例中, 可选地, 如图 8所示, 该用户设备 500还包括: 第三获取模块 550,用于在该第二获取模块 540获取的该标识信息指示 该第二状态时, 通过频率区分方式和码字区分方式中的至少一种, 获取用 于发射分集传输方式的用户设备特定参考信号 UERS。
在本发明实施例中, 可选地, 该第一确定模块 520确定的该 DCI格式 集合还包括第二 DCI格式, 该第二 DCI格式包括双码字的控制信息, 基于 该第二 DCI格式调度的数据信道釆用基于信道信息预编码的且大于或等于 一层的闭环 MIMO传输方式。
在本发明实施例中, 可选地, 该第一确定模块 520确定的该 DCI格式 集合还包括第二 DCI格式, 该第二 DCI格式包括双码字的控制信息, 并且 基于该第一 DCI格式和该第二 DCI格式调度的数据信道釆用基于信道信息 预编码的且大于或等于一层的闭环 MIMO传输方式。
在本发明实施例中, 可选地, 如图 8所示, 该用户设备 500还包括: 传输模块 560, 用于在该检测模块 530检测到与该第一 DCI格式对应 的控制信令时, 根据该第一 DCI格式包括的天线配置信息, 接收或发送该 第一 DCI格式调度的数据信道, 其中, 该第一 DCI格式调度的数据信道釆 用闭环 MIMO传输方式, 该天线配置信息包括码字信息, 天线端口信息、 参考信号扰码标识信息、 预编码矩阵标识信息和空间层数信息中的至少一 种。
可选地, 该码字信息包括码字标识, 该码字标识表示该第一 DCI格式 所调度的数据信道传输的数据的码字标号。
在本发明实施例中, 可选地, 如图 9所示, 该用户设备 500还包括: 第二确定模块 570 ,用于根据与该第一确定模块 520确定的该第一 DCI 格式对应的该控制信令, 确定该第一 DCI格式调度的数据信道传输的数据 为重传码字;
第三确定模块 581 , 用于在该第二确定模块 570确定该第一 DCI格式 调度的数据信道传输的数据为重传码字时, 根据该天线配置信息, 确定该 重传码字所占的层数大于或等于两层, 或该重传码字所占的层数与该重传 码字对应的初传码字所占的层数相等; 和 /或
第四确定模块 582, 用于在该第二确定模块 570确定该第一 DCI格式 调度的数据信道传输的数据为重传码字时, 根据该天线配置信息, 确定该 重传码字釆用预配置的天线端口, 或该重传码字釆用与该重传码字对应的 初传码字相同的天线端口; 和 /或 第五确定模块 583 , 用于在该第二确定模块 570确定该第一 DCI格式 调度的数据信道传输的数据为重传码字时, 根据该天线配置信息, 确定该 重传码字釆用预配置的预编码矩阵标识。
在本发明实施例中, 可选地, 该第一确定模块 520确定的该 DCI格式 集合还包括第三 DCI格式, 基于该第三 DCI格式调度的数据信道釆用基于 发射分集或开环单天线端口的传输方式。 可选地, 该第三 DCI格式位于公 共搜索空间, 即至少两个 UE都需要搜索的搜索空间。 可选地, 该第三 DCI 格式还可以位于主载波上的 UE特定搜索空间, 但不可以位于辅载波上的 UE特定搜索空间。
具体地, UE在该 UE特定的搜索空间中检测第一 DCI格式和第二 DCI 格式对应的控制信令,而且还需要在公共搜索空间和主载波上的 UE特定搜 索空间中检测第三 DCI格式对应的控制信令, 并根据检测到的控制信令处 理相应的数据信道。
上述实施例能够保证 UE对 PDCCH的盲检测次数相比于已有系统不增 加, 并且不增加 UE的实现复杂度。
根据本发明实施例的用户设备 500可对应于根据本发明实施例的传输 控制信息的方法中的用户设备, 并且用户设备 500 中的各个模块的上述和 其它操作和 /或功能分别为了实现图 1至图 3中的方法的相应流程, 为了简 洁, 在此不再赘述。
本发明实施例的用户设备, 通过第一 DCI格式包括的标识信息可以用 于指示两种传输方式, 或通过传输模式对应的 DCI格式集合包括第一 DCI 格式和第二 DCI格式, 该第一 DCI格式和第二 DCI格式都调度釆用闭环 MIMO传输方式的数据信道, 使得数据信道的传输模式至少对应两种传输 方式, 能够增强控制信道, 减少控制信道的开销, 提高系统调度效率和灵 活性, 并能够克服控制信道阻塞的问题, 以及提高系统的控制信道资源的 利用率。
图 10示出了根据本发明实施例的基站 700的示意性框图。 如图 10所 示, 该基站 700包括:
配置模块 710, 用于配置数据信道的传输模式;
第一确定模块 720,用于确定与该配置模块 710配置的该传输模式对应 的下行控制信息 DCI格式集合, 该 DCI格式集合包括第一 DCI格式, 该第 一 DCI格式包括单码字的控制信息;
第一发送模块 730, 用于根据该第一确定模块 720确定的该 DCI格式 集合, 向用户设备发送与该 DCI格式集合对应的控制信令。
本发明实施例的基站, 通过数据信道的传输模式至少对应两种传输方 式, 能够增强控制信道, 减少控制信道的开销, 提高系统调度效率和灵活 性, 并能够克服控制信道阻塞的问题, 以及提高系统的控制信道资源的利 用率。
在本发明实施例中, 可选地, 如图 11所示, 该第一发送模块 730包括: 第一发送单元 731 , 用于在该第一确定模块 720确定该第一 DCI格式 调度的数据信道釆用闭环多输入多输出 MIMO传输方式时, 向该用户设备 发送与包括标识信息的该第一 DCI格式对应的控制信令, 该标识信息指示 第一状态; 或
第二发送单元 732, 用于在该第一确定模块 720确定该第一 DCI格式 调度的数据信道釆用发射分集或开环单天线端口传输方式时, 向该用户设 备发送与包括标识信息的该第一 DCI格式对应的控制信令, 该标识信息指 示第二状态。
在本发明实施例中, 可选地, 如图 12所示, 该基站 700还包括: 第二发送模块 740, 用于在该第一确定模块 720确定该第一 DCI格式 调度的数据信道釆用发射分集传输方式时, 通过频率区分方式和码字区分 方式中的至少一种, 向该用户设备发送用于发射分集传输方式的用户设备 特定参考信号 UERS。
可选地, 该第一确定模块 720确定的该 DCI格式集合还包括第二 DCI 格式, 该第二 DCI格式包括双码字的控制信息, 基于该第二 DCI格式调度 的数据信道釆用基于信道信息预编码的且大于或等于一层的闭环 MIMO传 输方式。
在本发明实施例中, 可选地, 该第一确定模块 720确定的该 DCI格式 集合还包括第二 DCI格式, 该第二 DCI格式包括双码字的控制信息, 并且 基于该第一 DCI格式和该第二 DCI格式调度的数据信道釆用基于信道信息 预编码的且大于或等于一层的闭环 MIMO传输方式。
在本发明实施例中, 可选地, 如图 12所示, 该基站 700还包括: 传输模块 750,用于在向该用户设备发送与该第一确定模块 720确定的 该第一 DCI格式对应的控制信令时, 根据该第一 DCI格式包括的天线配置 信息, 接收或发送该第一 DCI格式调度的数据信道, 其中, 该第一 DCI格 式调度的数据信道釆用闭环 MIMO传输方式, 该天线配置信息包括码字信 息, 天线端口信息、 参考信号扰码标识信息、 预编码矩阵标识信息和空间 层数信息中的至少一种。
可选地, 该码字信息包括码字标识, 该码字标识表示该第一 DCI格式 所调度的数据信道传输的数据的码字标号。
在本发明实施例中, 可选地, 如图 13所示, 该基站还 700包括: 第二确定模块 760, 用于确定该第一确定模块 720确定该第一 DCI格 式调度的数据信道传输的数据为重传码字;
第三确定模块 771 , 用于在该第二确定模块 760确定该第一 DCI格式 调度的数据信道传输的数据为重传码字时, 根据该天线配置信息, 确定该 重传码字所占的层数大于或等于两层, 或该重传码字所占的层数与该重传 码字对应的初传码字所占的层数相等; 和 /或
第四确定模块 772, 用于在该第二确定模块 760确定该第一 DCI格式 调度的数据信道传输的数据为重传码字时, 根据该天线配置信息, 确定该 重传码字釆用预配置的天线端口, 或该重传码字釆用与该重传码字对应的 初传码字相同的天线端口; 和 /或
第五确定模块 773 , 用于在该第二确定模块 760确定该第一 DCI格式 调度的数据信道传输的数据为重传码字时, 根据该天线配置信息, 确定该 重传码字釆用预配置的预编码矩阵标识。
在本发明实施例中, 可选地, 该 DCI格式集合还包括第三 DCI格式, 基于该第三 DCI格式调度的数据信道釆用基于发射分集或开环单天线端口 的传输方式。 可选地, 该第三 DCI格式位于公共搜索空间, 即至少两个 UE 都需要搜索的搜索空间。 可选地, 该第三 DCI格式还可以位于主载波上的 UE特定搜索空间, 但不可以位于辅载波上的 UE特定搜索空间。
根据本发明实施例的基站 700可对应于根据本发明实施例的传输控制 信息的方法中的基站, 并且基站 700中的各个模块的上述和其它操作和 /或 功能分别为了实现图 4至图 6中的方法的相应流程, 为了简洁, 在此不再 赘述。
本发明实施例的基站, 通过第一 DCI格式包括的标识信息可以用于指 示两种传输方式, 或通过传输模式对应的 DCI格式集合包括第一 DCI格式 和第二 DCI格式,该第一 DCI格式和第二 DCI格式都调度釆用闭环 MIMO 传输方式的数据信道, 使得数据信道的传输模式至少对应两种传输方式, 能够增强控制信道, 减少控制信道的开销, 提高系统调度效率和灵活性, 并能够克服控制信道阻塞的问题, 以及提高系统的控制信道资源的利用率。 本发明实施例还提供了一种传输信息的方法、 用户设备和基站, 能够 克服控制信道阻塞的问题, 并提高系统的资源利用率。
一方面, 本发明实施例提供了一种传输信息的方法, 该方法包括: 确 定用于检测控制信令的下行控制信息 DCI格式集合, 该 DCI格式集合包括 第一 DCI格式和第二 DCI格式,该第一 DCI格式对应的第一控制信令包括 指示第一状态或第二状态的标识信息, 该第一状态表示该第一控制信令用 于调度用户设备的数据信道的传输, 该第二状态表示该第一控制信令用于 指示该第二 DCI格式对应的第二控制信令的资源信息; 根据该 DCI格式集 合以及预置规则, 检测该第一控制信令和该第二控制信令。
可选地, 该检测该第一控制信令和该第二控制信令, 包括: 当检测到 该第一控制信令, 且该第一控制信令包括的该标识信息指示该第二状态时, 根据该第一控制信令中的控制信息, 检测该第二控制信令。
可选地, 该控制信息包括该第二控制信令所占的控制信道单元 CCE资 源或资源块 RB资源的信息, 该 CCE资源不属于用户设备的搜索空间, 该 RB资源不属于基站通过无线资源控制 RRC信令通知的该第二控制信令的 资源。
可选地, 该第一 DCI格式为回退调度的 DCI格式。
可选地, 该第二控制信令基于小区特定参考信号 CRS或用户设备特定 参考信号 UERS。
可选地, 该预置规则为预先定义的, 或通过 RRC信令通知的。
可选地, 该方法还包括: 当检测到该第一控制信令且该标识信息指示 该第二状态, 但未检测到该第二控制信令时, 向基站发送与该第一控制信 令对应的确认 ACK信息, 承载该 ACK信息的信道资源与该第一调度信令 的信道资源对应。
可选地, 该方法还包括: 当检测到该第一控制信令, 该标识信息指示 该第二状态, 并且检测到该第二控制信令时, 向基站发送与该第二控制信 令调度的数据对应的确认 ACK/不确认 NACK信息,承载该 ACK/NACK信 息的信道资源与该第二调度信令的信道资源对应。
另一方面, 本发明实施例提供了一种传输信息的方法, 该方法包括: 确定用户设备检测控制信令的下行控制信息 DCI格式集合, 该 DCI格式集 合包括第一 DCI格式和第二 DCI格式,该第一 DCI格式对应的第一控制信 令包括指示第一状态或第二状态的标识信息, 该第一状态表示该第一控制 信令用于调度用户设备的数据信道的传输, 该第二状态表示该第一控制信 令用于指示该第二 DCI格式对应的第二控制信令的资源信息; 向该用户设 备发送该第一控制信令和 /或该第二控制信令。
可选地, 该向该用户设备发送该第一控制信令和 /或该第二控制信令, 包括: 向该用户设备发送该第一控制信令和该第二控制信令, 该第一控制 信令包括的该标识信息指示该第二状态, 且该第一控制信令中的控制信息 为该第二控制信令的资源信息。
可选地, 该控制信息包括该第二控制信令所占的控制信道单元 CCE资 源或资源块 RB资源的信息, 该 CCE资源不属于该用户设备的搜索空间, 该 RB资源不属于基站通过无线资源控制 RRC信令通知的该第二控制信令 的资源。
可选地, 该方法还包括: 在向该用户设备发送该第一控制信令和该第 二控制信令时, 在分别与该第一控制信令和该第二控制信令对应的 ACK/NACK资源上检测该用户设备发送的 ACK/NACK信息。
可选地, 该第一 DCI格式为回退调度的 DCI格式。
可选地, 该第二控制信令基于小区特定参考信号 CRS或用户设备特定 参考信号 UERS。
再一方面, 本发明实施例提供了一种用户设备, 该用户设备包括: 确 定模块,用于确定用于检测控制信令的下行控制信息 DCI格式集合,该 DCI 格式集合包括第一 DCI格式和第二 DCI格式,该第一 DCI格式对应的第一 控制信令包括指示第一状态或第二状态的标识信息, 该第一状态表示该第 一控制信令用于调度用户设备的数据信道的传输, 该第二状态表示该第一 控制信令用于指示该第二 DCI格式对应的第二控制信令的资源信息; 检测 模块, 用于根据该确定模块确定的该 DCI格式集合以及预置规则, 检测该 第一控制信令和该第二控制信令。
可选地, 该检测模块还用于: 当检测到该第一控制信令, 且该第一控 制信令包括的该标识信息指示该第二状态时, 根据该第一控制信令中的控 制信息, 检测该第二控制信令。
可选地, 该检测模块检测的该第一控制信令中的控制信息包括该第二 控制信令所占的控制信道单元 CCE资源或资源块 RB资源的信息, 该 CCE 资源不属于用户设备的搜索空间,该 RB资源不属于基站通过无线资源控制 RRC信令通知的该第二控制信令的资源。
可选地, 该确定模块确定的该 DCI格式集合中的该第一 DCI格式为回 退调度的 DCI格式。
可选地, 该检测模块检测的该第二控制信令基于小区特定参考信号 CRS或用户设备特定参考信号 UERS。
可选地, 该检测模块根据的该预置规则为预先定义的, 或通过 RRC信 令通知的。
可选地, 该用户设备还包括: 第一发送模块, 用于在检测到该第一控 制信令且该标识信息指示该第二状态, 但未检测到该第二控制信令时, 向 基站发送与该第一控制信令对应的确认 ACK信息, 承载该 ACK信息的信 道资源与该第一调度信令的信道资源对应。
可选地, 该用户设备还包括: 第二发送模块, 用于在检测到该第一控 制信令, 该标识信息指示该第二状态, 并且检测到该第二控制信令时, 向 基站发送与该第二控制信令调度的数据对应的确认 ACK/不确认 NACK信 息, 承载该 ACK/NACK信息的信道资源与该第二调度信令的信道资源对 应。
再一方面, 本发明实施例提供了一种基站, 该基站包括: 确定模块, 用于确定用户设备检测控制信令的下行控制信息 DCI格式集合, 该 DCI格 式集合包括第一 DCI格式和第二 DCI格式,该第一 DCI格式对应的第一控 制信令包括指示第一状态或第二状态的标识信息, 该第一状态表示该第一 控制信令用于调度用户设备的数据信道的传输, 该第二状态表示该第一控 制信令用于指示该第二 DCI格式对应的第二控制信令的资源信息; 发送模 块, 用于向该用户设备发送与该确定模块确定的该 DCI格式集合相应的该 第一控制信令和 /或该第二控制信令。
可选地, 该发送模块还用于: 向该用户设备发送该第一控制信令和该 第二控制信令, 该第一控制信令包括的该标识信息指示该第二状态, 且该 第一控制信令中的控制信息为该第二控制信令的资源信息。
可选地, 该发送模块发送的该第一控制信令中的该控制信息包括该第 二控制信令所占的控制信道单元 CCE资源或资源块 RB资源的信息,该 CCE 资源不属于该用户设备的搜索空间 ,该 RB资源不属于基站通过无线资源控 制 RRC信令通知的该第二控制信令的资源。
可选地, 该基站还包括: 接收模块, 用于在向该用户设备发送该第一 控制信令和该第二控制信令时, 在分别与该第一控制信令和该第二控制信 令对应的 ACK/NACK资源上检测该用户设备发送的 ACK/NACK信息。
可选地, 该确定模块确定的该 DCI格式集合中的该第一 DCI格式为回 退调度的 DCI格式。
可选地, 该发送模块发送的该第二控制信令基于小区特定参考信号 CRS或用户设备特定参考信号 UERS。
基于上述技术方案, 本发明实施例的传输信息的方法、 用户设备和基 站, 通过控制信令包括指示第一状态或第二状态的标识信息, 以表示该控 制信令用于调度数据信道的传输或用于调度另一控制信道的传输, 从而能 够以多级调度的方式传输控制信息, 因此能够增强控制信道, 提高系统调 度效率和灵活性, 并能够克服控制信道阻塞的问题, 以及提高系统的资源 利用率。
下面将结合图 14至图 21 ,对根据本发明实施例的方法、 用户设备和基 站进行详细描述。
图 14示出了根据本发明实施例的传输信息的方法的示意性流程图。 如 图 14所示, 该方法包括: S1110, 确定用于检测控制信令的下行控制信息 DCI格式集合, 该 DCI 格式集合包括第一 DCI格式和第二 DCI格式,该第一 DCI格式对应的第一 控制信令包括指示第一状态或第二状态的标识信息, 该第一状态表示该第 一控制信令用于调度用户设备的数据信道的传输, 该第二状态表示该第一 控制信令用于指示该第二 DCI格式对应的第二控制信令的资源信息;
S1120, 根据该 DCI格式集合以及预置规则,检测该第一控制信令和该 第二控制信令。
因此, 本发明实施例的传输信息的方法, 通过控制信令包括指示第一 状态或第二状态的标识信息, 以表示该控制信令用于调度数据信道的传输 或用于调度另一控制信道的传输, 从而能够以多级调度的方式传输控制信 息, 因此能够增强控制信道, 提高系统调度效率和灵活性, 并能够克服控 制信道阻塞的问题, 以及提高系统的资源利用率。
在 S1110中, UE可以通过基站配置的数据信道的传输模式, 确定需要 检测的下行控制信息 (Downlink Control Information, 简称为 "DCI" )格式 集合。 该 DCI格式集合可以包括第一 DCI格式和第二 DCI格式, 该第一 DCI格式对应的第一控制信令包括指示第一状态或第二状态的标识信息, 该第一状态表示该第一控制信令用于调度用户设备的数据信道的传输, 该 第二状态表示该第一控制信令用于指示该第二 DCI格式对应的第二控制信 令的资源信息。例如,如果基站配置的物理下行共享信道( Physical Downlink Shared Channel , 简称为 "PDSCH" ) 的传输模式为闭环多输入多输出 ( Multiple Input Multiple Output, 简称为 "MIMO" ), 则该模式对应的 DCI 格式集合中包括 DCI格式 2C和 DCI格式 1A。
可选地,在本发明实施例中,该第一 DCI格式为回退调度的 DCI格式, 例如, 该第一 DCI格式对应的 PDCCH所调度的数据信道釆用发射分集或 开环单天线端口方式传输。 例如, 该 DCI格式 1A为回退格式, 具体地, 该 DCI格式 1A对应的 PDCCH所调度的数据信道釆用发射分集或开环单天 线端口方式传输。
可选地, 在本发明实施例中, 该第一控制信令包括的标识信息可以为 比特, 扰码或其它时频资源信息, 下面以比特为例进行说明。 该标识信息 可以为新增比特, 现有比特或比特组合, 现有比特的部分状态, 例如资源 分配比特的部分状态等, 或现有比特组合的部分状态。
例如, 当比特位为" 0,,时, 表示该标识信息指示第一状态, 即第一控制 信令用来调度 UE的数据信道的传输,即数据信道釆用发射分集或开环单天 线端口方式; 当比特位为 "Γ,时, 表示该标识信息指示第二状态, 即第一控 制信令用于指示该第二 DCI格式对应的第二控制信令的资源信息。应理解, 比特位为 "Γ,也可以表示第一状态, 比特位为" 0,,也可以表示第二状态, 本发 明实施例并不限于此。
在 S1120中, 用户设备根据该 DCI格式集合以及预置规则, 检测该第 一控制信令和该第二控制信令。 UE可以根据 CCE等级和 UE自己的扰码确 定搜索空间的位置, 在该搜索空间内检测该 DCI格式 1A, 当检测到的 DCI 格式 1A中的用作该标识信息的比特为第一状态时,如为" 0",则表示该 DCI 釆用发射分集或开环单天线端口方式。 同时, UE还会在该搜索空间中检测 上述 DCI格式 2C, 如果检测到, 则根据该 DCI格式 2C中的控制信息去对 数据进行接收。
可选地, 当 UE检测到该第一控制信令,且该第一控制信令包括的该标 识信息指示该第二状态时, UE根据该第一控制信令中的控制信息, 检测该 第二控制信令。
可选地, 在本发明实施例中, 该第一控制信令中的该控制信息包括该 第二控制信令所占的控制信道单元 CCE资源或资源块 RB资源的信息, 该 CCE资源不属于用户设备的搜索空间, 该 RB资源不属于基站通过无线资 源控制 RRC信令通知的该第二控制信令的资源。
可选地, 在本发明实施例中, 该第二控制信令基于小区特定参考信号 ( Cell-specific Reference Signal, 简称为 "CRS" )或用户设备特定参考信号 ( UE-specific Reference Signal , 简称为 "UERS" )。
可选地, 该预置规则为预先定义的, 或通过 RRC信令通知的。 具体而 言, 预配置的规则可以是预定义而不需要信令通知的, 例如 UE根据 CCE 等级和 UE自己的扰码来确定搜索空间的位置,这样 UE就在该搜索空间内 检测该第一 DCI格式和第二 DCI格式对应的 PDCCH; 另一方面, 该预配 置的规则可以是基站通过无线资源控制 (Radio Resource Control, 简称为 "RRC" )信令通知的, 例如基站通过 RRC信令配置第二 DCI格式对应的 PDCCH的资源位置, UE就根据该 RRC信令通知的资源位置检测该第二 DCI格式对应的 PDCCH。
例如, 在一些场景下, 基站确定的特定 CCE等级的 DCI格式 2C的搜 索空间内没有该 UE的位置, 比如 CCE等级 4的搜索空间没有位置来调度 该 UE, 此时可以考虑增加 CCE等级到 8来看是否等级 8的搜索空间中有 且此时用等级 4就可以满足该 DCI格式 2C的性能,此时 PDCCH资源区域 内还有连续的 4个 CCE可用(虽然不在该 UE的搜索空间内), 则可以选择 发送 DCI格式 1A给该 UE, 该 DCI格式 1A中的用作标识信息的比特置为 "1", 表示该 DCI格式 1A对应的 PDCCH用来指示上述 DCI格式 2C对应 的 PDCCH所占的资源信息, 该资源位置就是上述空余的 CCE等级 4的位 置, UE就根据该 DCI格式 1 A中的控制信息来检测上述 DCI格式 2C对应 的 PDCCH。
上述空余 CCE资源的指示方法可以基于模 CCE等级为 0为起点的方式 进行指示,例如 PDCCH资源区域中总共有 80个 CCE,则可以包括 80/4=20 个 CCE等级 4, 起点分别为 0,4,8,12, 76的标号的 CCE, 此时需要 5 比特来具体指示, 对于其他 CCE等级的指示方法类似。 可扩展地, 上述空 余 CCE资源的指示方法也可以不基于模该 CCE等级为 0为起点的方式进行 指示, 即任何连续的 CCE资源都可以用作需要的聚合等级的 CCE资源,此 时对于每种 CCE等级, 都是 80种可能性, 即总共 320种, 需要 9个比特 来具体指示。 可扩展地, 上述空余 CCE资源的指示方法还可以除掉该 UE 搜索空间中的 PDCCH候选位置, 可以进一步的节省所需要的指示比特。
可选地, 在本发明实施例中, 如图 15所示该方法还包括:
S1130, 当检测到该第一控制信令且该标识信息指示该第二状态, 但未 检测到该第二控制信令时, 向基站发送与该第一控制信令对应的确认 ACK 信息, 承载该 ACK信息的信道资源与该第一调度信令的信道资源对应;
S1140, 当检测到该第一控制信令, 该标识信息指示该第二状态, 并且 检测到该第二控制信令时, 向基站发送与该第二控制信令调度的数据对应 的确认 ACK/不确认 NACK信息,承载该 ACK/NACK信息的信道资源与该 第二调度信令的信道资源对应。
具体而言, 例如, 如果 UE接收到该第一 DCI格式对应的 PDCCH, 且 该标识信息为第二状态时,但 UE未检测到该第二 DCI格式对应的 PDCCH , 则 UE可以反馈该第一 DCI格式对应的 PDCCH所对应的 ACK确认信息, 承载该 ACK信息的信道资源与该第一 DCI格式对应的 PDCCH的资源对 应; 或者, 如果 UE接收到该第一 DCI格式对应的 PDCCH, 且该标识信息 为第二状态, 且 UE检测到该第二 DCI格式对应的 PDCCH, 则 UE根据该 第二 DCI格式对应的 PDCCH所调度的下行数据, 并反馈该下行数据所对 应的确认 ACK/不确认 NACK信息,承载该 ACK/NACK信息的信道资源与 该第二 DCI格式对应的 PDCCH的资源对应。 因此, 基站可以识别出 UE 是否对两个 PDCCH正确检测,进而准确的调整发送方式,以提高系统性能。
本发明实施例的传输信息的方法, 通过控制信令包括指示第一状态或 第二状态的标识信息, 以表示该控制信令用于调度数据信道的传输或用于 调度另一控制信道的传输, 从而能够以多级调度的方式传输控制信息, 因 此能够增强控制信道, 提高系统调度效率和灵活性, 并能够克服控制信道 阻塞的问题, 以及提高系统的资源利用率。
后续版本的 LTE系统会引入基于 UERS的 PDCCH (简称 U-PDCCH ), 具体而言是对 PDCCH进行闭环 MIMO预编码处理, 通过该预编码的增益 来提高 PDCCH的性能, 进而降低 PDCCH的开销。 该 U-PDCCH位于现有 LTE系统的非 PDCCH资源区域, 即位于 PDSCH区域。 UE的 U-PDCCH 的资源位置, 即所占用的 RB, 是基站通过 RRC信令通知给 UE的, 所以 无法获得动态调度的增益, 即如果 RRC 通知的资源在某个时刻对于传输 U-PDCCH的性能较差时, 就只能考虑用回退格式进行调度了。 本发明实施 例的上述方法可以解决这个问题, 即当 RRC信令通知的 U-PDCCH的资源 不合适时, 基站可以给 UE调度一个回退格式, 如 DCI格式 1A, 该 DCI 格式中的标识信息为第二状态, 即表示该 DCI格式 1A指示了非回退 DCI 格式, 如 DCI格式 2C, 对应的 U-PDCCH的资源, 该资源可以不在 RRC 信令通知的资源内, 具体的指示方法如上述实施例中描述, 由此可以提供 U-PDCCH的动态调度增益而不需要进行回退调度。
上文中结合图 14和 15 ,从用户设备的角度详细描述了根据本发明实施 例的传输信息的方法, 下面将结合图 16和 17,从基站的角度描述根据本发 明实施例的传输控制信息的方法。
图 16示出了根据本发明实施例的传输信息的方法的示意性流程图。 如 图 16所示, 该方法包括:
S1210, 确定用户设备检测控制信令的下行控制信息 DCI格式集合, 该 DCI格式集合包括第一 DCI格式和第二 DCI格式,该第一 DCI格式对应的 第一控制信令包括指示第一状态或第二状态的标识信息, 该第一状态表示 该第一控制信令用于调度用户设备的数据信道的传输, 该第二状态表示该 第一控制信令用于指示该第二 DCI格式对应的第二控制信令的资源信息;
S1220, 向该用户设备发送该第一控制信令和 /或该第二控制信令。
在 S1210 中, 可选地, 该控制信息包括该第二控制信令所占的控制信 道单元 CCE资源或资源块 RB资源的信息,该 CCE资源不属于该用户设备 的搜索空间, 该 RB资源不属于基站通过无线资源控制 RRC信令通知的该 第二控制信令的资源。
可选地, 该第一 DCI格式为回退调度的 DCI格式。 可选地, 该第二控 制信令基于小区特定参考信号 CRS或用户设备特定参考信号 UERS。 可选 地, 该标识信息可以为比特、 4尤码或其它时频资源信息。
在 S1220 中, 可选地, 基站向该用户设备发送该第一控制信令和该第 二控制信令, 该第一控制信令包括的该标识信息指示该第二状态, 且该第 一控制信令中的控制信息为该第二控制信令的资源信息。 在本发明实施例中, 可选地, 如图 17所示, 该方法还包括:
S1230 , 在基站向该用户设备发送该第一控制信令和该第二控制信令 时,基站在分别与该第一控制信令和该第二控制信令对应的 ACK/NACK资 源上检测该用户设备发送的 ACK/NACK信息。
应理解, 在本发明实施例中, 用户设备侧描述的用户设备与基站的交 互及相关特性、 功能等与基站侧的描述相应, 为了简洁, 在此不再赘述。
因此, 本发明实施例的传输信息的方法, 通过控制信令包括指示第一 状态或第二状态的标识信息, 以表示该控制信令用于调度数据信道的传输 或用于调度另一控制信道的传输, 从而能够以多级调度的方式传输控制信 息, 因此能够增强控制信道, 提高系统调度效率和灵活性, 并能够克服控 制信道阻塞的问题, 以及提高系统的资源利用率。
上文中结合图 14至图 17 ,详细描述了根据本发明实施例的传输控制信 息的方法, 下面将结合图 18至图 21 , 详细描述根据本发明实施例的用户设 备和基站。
图 18示出了根据本发明实施例的用户设备 1500的示意性框图。 如图 18所示, 该用户设备 1500包括:
确定模块 1510, 用于确定用于检测控制信令的下行控制信息 DCI格式 集合, 该 DCI格式集合包括第一 DCI格式和第二 DCI格式, 该第一 DCI 格式对应的第一控制信令包括指示第一状态或第二状态的标识信息, 该第 一状态表示该第一控制信令用于调度用户设备的数据信道的传输, 该第二 状态表示该第一控制信令用于指示该第二 DCI格式对应的第二控制信令的 资源信息;
检测模块 1520, 用于根据该确定模块 1510确定的该 DCI格式集合以 及预置规则, 检测该第一控制信令和该第二控制信令。
本发明实施例的用户设备, 通过控制信令包括指示第一状态或第二状 态的标识信息, 以表示该控制信令用于调度数据信道的传输或用于调度另 一控制信道的传输, 从而能够以多级调度的方式传输控制信息, 因此能够 增强控制信道, 提高系统调度效率和灵活性, 并能够克服控制信道阻塞的 问题, 以及提高系统的资源利用率。
可选地, 该检测模块 1520还用于: 当检测到该第一控制信令, 且该第 一控制信令包括的该标识信息指示该第二状态时, 根据该第一控制信令中 的控制信息, 检测该第二控制信令。
可选地, 该检测模块 1520检测的该第一控制信令中的控制信息包括该 第二控制信令所占的控制信道单元 CCE资源或资源块 RB资源的信息, 该 CCE资源不属于用户设备的搜索空间, 该 RB资源不属于基站通过无线资 源控制 RRC信令通知的该第二控制信令的资源。
可选地, 该确定模块 1510确定的该 DCI格式集合中的该第一 DCI格 式为回退调度的 DCI格式。
可选地, 该检测模块 1520检测的该第二控制信令基于小区特定参考信 号 CRS或用户设备特定参考信号 UERS。
可选地, 该检测模块 1520 根据的该预置规则为预先定义的, 或通过 RRC信令通知的。
在本发明实施例中, 如图 19所示, 可选地, 该用户设备 1500还包括: 第一发送模块 1530, 用于在检测到该第一控制信令且该标识信息指示 该第二状态, 但未检测到该第二控制信令时, 向基站发送与该第一控制信 令对应的确认 ACK信息, 承载该 ACK信息的信道资源与该第一调度信令 的信道资源对应。
可选地, 如图 19所示, 该用户设备 1500还包括:
第二发送模块 1540, 用于在检测到该第一控制信令, 该标识信息指示 该第二状态, 并且检测到该第二控制信令时, 向基站发送与该第二控制信 令调度的数据对应的确认 ACK/不确认 NACK信息,承载该 ACK/NACK信 息的信道资源与该第二调度信令的信道资源对应。
根据本发明实施例的用户设备 1500可对应于根据本发明实施例的传输 信息的方法中的用户设备, 并且用户设备 1500中的各个模块的上述和其它 操作和 /或功能分别为了实现图 14至图 17中的方法的相应流程,为了简洁, 在此不再赘述。
本发明实施例的用户设备, 通过控制信令包括指示第一状态或第二状 态的标识信息, 以表示该控制信令用于调度数据信道的传输或用于调度另 一控制信道的传输, 从而能够以多级调度的方式传输控制信息, 因此能够 增强控制信道, 提高系统调度效率和灵活性, 并能够克服控制信道阻塞的 问题, 以及提高系统的资源利用率。
图 20示出了根据本发明实施例的基站 1700的示意性框图。 如图 20所 示, 该基站 1700包括:
确定模块 1710, 用于确定用户设备检测控制信令的下行控制信息 DCI 格式集合, 该 DCI格式集合包括第一 DCI格式和第二 DCI格式, 该第一 DCI格式对应的第一控制信令包括指示第一状态或第二状态的标识信息, 该第一状态表示该第一控制信令用于调度用户设备的数据信道的传输, 该 第二状态表示该第一控制信令用于指示该第二 DCI格式对应的第二控制信 令的资源信息;
发送模块 1720, 用于向该用户设备发送与该确定模块 1710确定的该 DCI格式集合相应的该第一控制信令和 /或该第二控制信令。
在本发明实施例中, 可选地, 该发送模块 1720还用于: 向该用户设备 发送该第一控制信令和该第二控制信令, 该第一控制信令包括的该标识信 息指示该第二状态, 且该第一控制信令中的控制信息为该第二控制信令的 资源信息。
在本发明实施例中, 可选地, 该发送模块 1720发送的该第一控制信令 中的该控制信息包括该第二控制信令所占的控制信道单元 CCE资源或资源 块 RB资源的信息, 该 CCE资源不属于该用户设备的搜索空间, 该 RB资 源不属于基站通过无线资源控制 RRC信令通知的该第二控制信令的资源。
在本发明实施例中, 如图 21所示, 可选地, 该基站 1700还包括: 接收模块 1730, 用于在向该用户设备发送该第一控制信令和该第二控 制信令时, 在分别与该第一控制信令和该第二控制信令对应的 ACK/NACK 资源上检测该用户设备发送的 ACK/NACK信息。
在本发明实施例中, 可选地, 该确定模块 1710确定的该 DCI格式集合 中的该第一 DCI格式为回退调度的 DCI格式。
在本发明实施例中, 可选地, 该发送模块 1720发送的该第二控制信令 基于小区特定参考信号 CRS或用户设备特定参考信号 UERS。
根据本发明实施例的基站 1700可对应于根据本发明实施例的传输信息 的方法中的基站,并且基站 1700中的各个模块的上述和其它操作和 /或功能 分别为了实现图 14至图 17中的方法的相应流程, 为了简洁, 在此不再赘 述。
本发明实施例的基站, 通过控制信令包括指示第一状态或第二状态的 标识信息, 以表示该控制信令用于调度数据信道的传输或用于调度另一控 制信道的传输, 从而能够以多级调度的方式传输控制信息, 因此能够增强 控制信道, 提高系统调度效率和灵活性, 并能够克服控制信道阻塞的问题, 以及提高系统的资源利用率。
本领域普通技术人员可以意识到, 结合本文中所公开的实施例描述的 各示例的单元及算法步骤, 能够以电子硬件、 计算机软件或者二者的结合 来实现, 为了清楚地说明硬件和软件的可互换性, 在上述说明中已经按照 功能一般性地描述了各示例的组成及步骤。 这些功能究竟以硬件还是软件 方式来执行, 取决于技术方案的特定应用和设计约束条件。 专业技术人员 可以对每个特定的应用来使用不同方法来实现所描述的功能, 但是这种实 现不应认为超出本发明的范围。
所属领域的技术人员可以清楚地了解到, 为了描述的方便和简洁, 上 述描述的系统、 装置和单元的具体工作过程, 可以参考前述方法实施例中 的对应过程, 在此不再赘述。
在本申请所提供的几个实施例中, 应该理解到, 所揭露的系统、 装置 和方法, 可以通过其它的方式实现。 例如, 以上所描述的装置实施例仅仅 是示意性的, 例如, 所述单元的划分, 仅仅为一种逻辑功能划分, 实际实 现时可以有另外的划分方式, 例如多个单元或组件可以结合或者可以集成 到另一个系统, 或一些特征可以忽略, 或不执行。 另外, 所显示或讨论的 相互之间的耦合或直接耦合或通信连接可以是通过一些接口、 装置或单元 的间接耦合或通信连接, 也可以是电的, 机械的或其它的形式连接。 作为单元显示的;件可以是或者也;以不 物理 元,、即可以位于一个地 方, 或者也可以分布到多个网络单元上。 可以根据实际的需要选择其中的 部分或者全部单元来实现本发明实施例方案的目的。
另外, 在本发明各个实施例中的各功能单元可以集成在一个处理单元 中, 也可以是各个单元单独物理存在, 也可以是两个或两个以上单元集成 在一个单元中。 上述集成的单元既可以釆用硬件的形式实现, 也可以釆用 软件功能单元的形式实现。
所述集成的单元如果以软件功能单元的形式实现并作为独立的产品销 售或使用时, 可以存储在一个计算机可读取存储介质中。 基于这样的理解, 本发明的技术方案本质上或者说对现有技术做出贡献的部分, 或者该技术 方案的全部或部分可以以软件产品的形式体现出来, 该计算机软件产品存 储在一个存储介质中, 包括若干指令用以使得一台计算机设备(可以是个 人计算机, 服务器, 或者网络设备等)执行本发明各个实施例所述方法的 全部或部分步骤。 而前述的存储介质包括: u盘、 移动硬盘、 只读存储器
( ROM, Read-Only Memory ), 随机存取存储器 (RAM, Random Access Memory )、 磁碟或者光盘等各种可以存储程序代码的介质。
以上所述, 仅为本发明的具体实施方式, 但本发明的保护范围并不局 限于此, 任何熟悉本技术领域的技术人员在本发明揭露的技术范围内, 可 轻易想到各种等效的修改或替换, 这些修改或替换都应涵盖在本发明的保 护范围之内。 因此, 本发明的保护范围应以权利要求的保护范围为准。

Claims

权利要求
1、 一种传输控制信息的方法, 其特征在于, 包括:
获取基站配置的数据信道的传输模式;
确定与所述传输模式对应的下行控制信息 DCI格式集合, 所述 DCI格 式集合包括第一 DCI格式, 所述第一 DCI格式包括单码字的控制信息; 根据所述 DCI格式集合, 检测所述基站发送的与所述 DCI格式集合对 应的控制信令。
2、 根据权利要求 1所述的方法, 其特征在于, 所述方法还包括: 在检测到与所述第一 DCI格式对应的控制信令时, 获取所述第一 DCI 格式包括的标识信息, 所述标识信息指示第一状态或第二状态, 所述第一 状态表示所述第一 DCI格式调度的数据信道釆用闭环多输入多输出 MIMO 传输方式, 所述第二状态表示所述第一 DCI格式调度的数据信道釆用发射 分集或开环单天线端口传输方式。
3、 根据权利要求 2所述的方法, 其特征在于, 所述方法还包括: 通过频率区分方式和码字区分方式中的至少一种, 获取用于发射分集 传输方式的用户设备特定参考信号 UERS。
4、 根据权利要求 2所述的方法, 其特征在于, 所述 DCI格式集合还包 括第二 DCI格式, 所述第二 DCI格式包括双码字的控制信息, 基于所述第 二 DCI格式调度的数据信道釆用基于信道信息预编码的且大于或等于一层 的闭环 MIMO传输方式。
5、 根据权利要求 1所述的方法, 其特征在于, 所述 DCI格式集合还包 括第二 DCI格式, 所述第二 DCI格式包括双码字的控制信息, 并且基于所 述第一 DCI格式和所述第二 DCI格式调度的数据信道釆用基于信道信息预 编码的且大于或等于一层的闭环 MIMO传输方式。
6、 根据权利要求 1至 5中任一项所述的方法, 其特征在于, 所述方法 还包括:
在检测到与所述第一 DCI格式对应的控制信令时, 根据所述第一 DCI 格式包括的天线配置信息,接收或发送所述第一 DCI格式调度的数据信道, 其中, 所述第一 DCI格式调度的数据信道釆用闭环 MIMO传输方式, 所述 天线配置信息包括码字信息, 天线端口信息、 参考信号扰码标识信息、 预 编码矩阵标识信息和空间层数信息中的至少一种。
7、 根据权利要求 6所述的方法, 其特征在于, 所述码字信息包括码字 标识, 所述码字标识表示所述第一 DCI格式所调度的数据信道传输的数据 的码字标号。
8、 根据权利要求 6所述的方法, 其特征在于, 所述方法还包括: 根据与所述第一 DCI格式对应的所述控制信令, 确定所述第一 DCI格 式调度的数据信道传输的数据为重传码字;
根据所述天线配置信息, 确定所述重传码字所占的层数大于或等于两 层, 或所述重传码字所占的层数与所述重传码字对应的初传码字所占的层 数相等; 或
根据所述天线配置信息, 确定所述重传码字釆用预配置的天线端口, 或所述重传码字釆用与所述重传码字对应的初传码字相同的天线端口; 或 根据所述天线配置信息, 确定所述重传码字釆用预配置的预编码矩阵 标识。
9、 一种传输控制信息的方法, 其特征在于, 包括:
配置数据信道的传输模式;
确定与所述传输模式对应的下行控制信息 DCI格式集合, 所述 DCI格 式集合包括第一 DCI格式, 所述第一 DCI格式包括单码字的控制信息; 根据所述 DCI格式集合, 向用户设备发送与所述 DCI格式集合对应的 控制信令。
10、 根据权利要求 9所述的方法, 其特征在于, 所述向用户设备发送 与所述 DCI格式集合对应的控制信令, 包括:
在确定所述第一 DCI 格式调度的数据信道釆用闭环多输入多输出 MIMO传输方式时, 向所述用户设备发送与包括标识信息的所述第一 DCI 格式对应的控制信令, 所述标识信息指示第一状态; 或
在确定所述第一 DCI格式调度的数据信道釆用发射分集或开环单天线 端口传输方式时, 向所述用户设备发送与包括标识信息的所述第一 DCI格 式对应的控制信令, 所述标识信息指示第二状态。
11、 根据权利要求 10所述的方法, 其特征在于, 所述方法还包括: 通过频率区分方式和码字区分方式中的至少一种, 向所述用户设备发 送用于发射分集传输方式的用户设备特定参考信号 UERS。
12、 根据权利要求 10所述的方法, 其特征在于, 所述 DCI格式集合还 包括第二 DCI格式, 所述第二 DCI格式包括双码字的控制信息, 基于所述 第二 DCI格式调度的数据信道釆用基于信道信息预编码的且大于或等于一 层的闭环 MIMO传输方式。
13、 根据权利要求 9所述的方法, 其特征在于, 所述 DCI格式集合还 包括第二 DCI格式, 所述第二 DCI格式包括双码字的控制信息, 并且基于 所述第一 DCI格式和所述第二 DCI格式调度的数据信道釆用基于信道信息 预编码的且大于或等于一层的闭环 MIMO传输方式。
14、 根据权利要求 9至 13中任一项所述的方法, 其特征在于, 所述方 法还包括:
在向所述用户设备发送与所述第一 DCI格式对应的控制信令时, 根据 所述第一 DCI格式包括的天线配置信息, 接收或发送所述第一 DCI格式调 度的数据信道, 其中, 所述第一 DCI格式调度的数据信道釆用闭环 MIMO 传输方式, 所述天线配置信息包括码字信息, 天线端口信息、 参考信号扰 码标识信息、 预编码矩阵标识信息和空间层数信息中的至少一种。
15、 根据权利要求 14所述的方法, 其特征在于, 所述码字信息包括码 字标识, 所述码字标识表示所述第一 DCI格式所调度的数据信道传输的数 据的码字标号。
16、 根据权利要求 14所述的方法, 其特征在于, 所述方法还包括: 确定所述第一 DCI格式调度的数据信道传输的数据为重传码字; 根据所述天线配置信息, 确定所述重传码字所占的层数大于或等于两 层, 或所述重传码字所占的层数与所述重传码字对应的初传码字所占的层 数相等; 或
根据所述天线配置信息, 确定所述重传码字釆用预配置的天线端口, 或所述重传码字釆用与所述重传码字对应的初传码字相同的天线端口; 或 根据所述天线配置信息, 确定所述重传码字釆用预配置的预编码矩阵 标识。
17、 一种用户设备, 其特征在于, 包括:
第一获取模块, 用于获取基站配置的数据信道的传输模式;
第一确定模块, 用于确定与所述第一获取模块获取的所述传输模式对 应的下行控制信息 DCI格式集合, 所述 DCI格式集合包括第一 DCI格式, 所述第一 DCI格式包括单码字的控制信息;
检测模块, 用于根据所述第一确定模块确定的所述 DCI格式集合, 检 测所述基站发送的与所述 DCI格式集合对应的控制信令。
18、 根据权利要求 17所述的用户设备, 其特征在于, 所述用户设备还 包括:
第二获取模块, 用于在所述检测模块检测到与所述第一 DCI格式对应 的控制信令时, 获取所述第一 DCI格式包括的标识信息, 所述标识信息指 示第一状态或第二状态, 所述第一状态表示所述第一 DCI格式调度的数据 信道釆用闭环多输入多输出 MIMO传输方式, 所述第二状态表示所述第一 DCI格式调度的数据信道釆用发射分集或开环单天线端口传输方式。
19、 根据权利要求 18所述的用户设备, 其特征在于, 所述用户设备还 包括:
第三获取模块, 用于在所述第二获取模块获取的所述标识信息指示所 述第二状态时, 通过频率区分方式和码字区分方式中的至少一种, 获取用 于发射分集传输方式的用户设备特定参考信号 UERS。
20、 根据权利要求 18所述的用户设备, 其特征在于, 所述第一确定模 块确定的所述 DCI格式集合还包括第二 DCI格式,所述第二 DCI格式包括 双码字的控制信息, 基于所述第二 DCI格式调度的数据信道釆用基于信道 信息预编码的且大于或等于一层的闭环 MIMO传输方式。
21、 根据权利要求 17所述的用户设备, 其特征在于, 所述第一确定模 块确定的所述 DCI格式集合还包括第二 DCI格式,所述第二 DCI格式包括 双码字的控制信息, 并且基于所述第一 DCI格式和所述第二 DCI格式调度 的数据信道釆用基于信道信息预编码的且大于或等于一层的闭环 MIMO传 输方式。
22、 根据权利要求 17至 21 中任一项所述的用户设备, 其特征在于, 所述用户设备还包括:
传输模块, 用于在所述检测模块检测到与所述第一 DCI格式对应的控 制信令时, 根据所述第一 DCI格式包括的天线配置信息, 接收或发送所述 第一 DCI格式调度的数据信道, 其中, 所述第一 DCI格式调度的数据信道 釆用闭环 MIMO传输方式, 所述天线配置信息包括码字信息, 天线端口信 息、 参考信号扰码标识信息、 预编码矩阵标识信息和空间层数信息中的至 少一种。
23、 根据权利要求 22所述的用户设备, 其特征在于, 所述码字信息包 括码字标识, 所述码字标识表示所述第一 DCI格式所调度的数据信道传输 的数据的码字标号。
24、 根据权利要求 22所述的用户设备, 其特征在于, 所述用户设备还 包括: 第二确定模块, 用于根据与所述第一确定模块确定的所述第一 DCI格 式对应的所述控制信令, 确定所述第一 DCI格式调度的数据信道传输的数 据为重传码字;
第三确定模块, 用于在所述第二确定模块确定所述第一 DCI格式调度 的数据信道传输的数据为重传码字时, 根据所述天线配置信息, 确定所述 重传码字所占的层数大于或等于两层, 或所述重传码字所占的层数与所述 重传码字对应的初传码字所占的层数相等; 或
第四确定模块, 用于在所述第二确定模块确定所述第一 DCI格式调度 的数据信道传输的数据为重传码字时, 根据所述天线配置信息, 确定所述 重传码字釆用预配置的天线端口, 或所述重传码字釆用与所述重传码字对 应的初传码字相同的天线端口; 或
第五确定模块, 用于在所述第二确定模块确定所述第一 DCI格式调度 的数据信道传输的数据为重传码字时, 根据所述天线配置信息, 确定所述 重传码字釆用预配置的预编码矩阵标识。
25、 一种基站, 其特征在于, 包括:
配置模块, 用于配置数据信道的传输模式;
第一确定模块, 用于确定与所述配置模块配置的所述传输模式对应的 下行控制信息 DCI格式集合, 所述 DCI格式集合包括第一 DCI格式, 所述 第一 DCI格式包括单码字的控制信息;
第一发送模块,用于根据所述第一确定模块确定的所述 DCI格式集合, 向用户设备发送与所述 DCI格式集合对应的控制信令。
26、 根据权利要求 25所述的基站, 其特征在于, 所述第一发送模块包 括:
第一发送单元, 用于在所述第一确定模块确定所述第一 DCI格式调度 的数据信道釆用闭环多输入多输出 MIMO传输方式时, 向所述用户设备发 送与包括标识信息的所述第一 DCI格式对应的控制信令, 所述标识信息指 示第一状态; 或
第二发送单元, 用于在所述第一确定模块确定所述第一 DCI格式调度 的数据信道釆用发射分集或开环单天线端口传输方式时, 向所述用户设备 发送与包括标识信息的所述第一 DCI格式对应的控制信令, 所述标识信息 指示第二状态。
27、 根据权利要求 26所述的基站, 其特征在于, 所述基站还包括: 第二发送模块, 用于在所述第一确定模块确定所述第一 DCI格式调度 的数据信道釆用发射分集传输方式时, 通过频率区分方式和码字区分方式 中的至少一种, 向所述用户设备发送用于发射分集传输方式的用户设备特 定参考信号 UERS。
28、 根据权利要求 26所述的基站, 其特征在于, 所述第一确定模块确 定的所述 DCI格式集合还包括第二 DCI格式,所述第二 DCI格式包括双码 字的控制信息, 基于所述第二 DCI格式调度的数据信道釆用基于信道信息 预编码的且大于或等于一层的闭环 MIMO传输方式。
29、 根据权利要求 25所述的基站, 其特征在于, 所述第一确定模块确 定的所述 DCI格式集合还包括第二 DCI格式,所述第二 DCI格式包括双码 字的控制信息, 并且基于所述第一 DCI格式和所述第二 DCI格式调度的数 据信道釆用基于信道信息预编码的且大于或等于一层的闭环 MIMO传输方 式。
30、 根据权利要求 25至 29中任一项所述的基站, 其特征在于, 所述 基站还包括:
传输模块, 用于在向所述用户设备发送与所述第一确定模块确定的所 述第一 DCI格式对应的控制信令时, 根据所述第一 DCI格式包括的天线配 置信息, 接收或发送所述第一 DCI格式调度的数据信道, 其中, 所述第一 DCI格式调度的数据信道釆用闭环 MIMO传输方式, 所述天线配置信息包 括码字信息, 天线端口信息、 参考信号扰码标识信息、 预编码矩阵标识信 息和空间层数信息中的至少一种。
31、 根据权利要求 30所述的基站, 其特征在于, 所述码字信息包括码 字标识, 所述码字标识表示所述第一 DCI格式所调度的数据信道传输的数 据的码字标号。
32、 根据权利要求 30所述的基站, 其特征在于, 所述基站还包括: 第二确定模块, 用于确定所述第一确定模块确定的所述第一 DCI格式 调度的数据信道传输的数据为重传码字;
第三确定模块, 用于在所述第二确定模块确定所述第一 DCI格式调度 的数据信道传输的数据为重传码字时, 根据所述天线配置信息, 确定所述 重传码字所占的层数大于或等于两层, 或所述重传码字所占的层数与所述 重传码字对应的初传码字所占的层数相等; 或
第四确定模块, 用于在所述第二确定模块确定所述第一 DCI格式调度 的数据信道传输的数据为重传码字时, 根据所述天线配置信息, 确定所述 重传码字釆用预配置的天线端口, 或所述重传码字釆用与所述重传码字对 应的初传码字相同的天线端口; 或
第五确定模块, 用于在所述第二确定模块确定所述第一 DCI格式调度 的数据信道传输的数据为重传码字时, 根据所述天线配置信息, 确定所述 重传码字釆用预配置的预编码矩阵标识。
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