WO2012167459A1 - Procédé d'ordonnancement de ressources, procédé, dispositif et système de transmission de données - Google Patents

Procédé d'ordonnancement de ressources, procédé, dispositif et système de transmission de données Download PDF

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Publication number
WO2012167459A1
WO2012167459A1 PCT/CN2011/076400 CN2011076400W WO2012167459A1 WO 2012167459 A1 WO2012167459 A1 WO 2012167459A1 CN 2011076400 W CN2011076400 W CN 2011076400W WO 2012167459 A1 WO2012167459 A1 WO 2012167459A1
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WIPO (PCT)
Prior art keywords
ndi
downlink control
control information
data
user equipment
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
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PCT/CN2011/076400
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English (en)
Chinese (zh)
Inventor
邴立东
杨安全
邢聃
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Huawei Technologies Co Ltd
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Huawei Technologies Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Huawei Technologies Co Ltd filed Critical Huawei Technologies Co Ltd
Priority to CN201180000923.1A priority Critical patent/CN103053212B/zh
Priority to PCT/CN2011/076400 priority patent/WO2012167459A1/fr
Publication of WO2012167459A1 publication Critical patent/WO2012167459A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
    • H04L1/1867—Arrangements specially adapted for the transmitter end
    • H04L1/1896—ARQ related signaling
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management

Definitions

  • the present invention relates to the field of communications technologies, and in particular, to a resource scheduling method and a data transmission method, and a device and system.
  • LTE Long Term Evolution
  • Table 1 shows the seven kinds of uplink and downlink ratios.
  • the access device may need to simultaneously schedule two uplink subframes through one downlink subframe, and the corresponding scheduling information passes through the physical downlink control channel (PDCCH, Physical downlink control channel ) Because the PDCCH resource is very valuable, how to implement one downlink subframe to simultaneously schedule two uplink subframes and reduce the consumption of PDCCH resources as much as possible is a problem worthy of study.
  • PDCCH Physical downlink control channel
  • the resource scheduling method and the data transmission method, device and system provided by the present invention in order to implement the scheduling of two uplink subframes in one downlink subframe, and reduce the consumption of PDCCH resources as much as possible.
  • An aspect of the present invention provides a resource scheduling method, which may include: Sending downlink control information to the user equipment, where the downlink control information includes an uplink subframe scheduling indication, where the uplink subframe scheduling indication is used to indicate that two uplink subframe transmission data is scheduled; and the downlink control information further includes the first The new data indicates the NDI and the second NDI, where the first NDI and the second NDI are respectively used to indicate the NDI value of the hybrid automatic repeat request HARQ channel of the two uplink subframes; or, the downlink control The information further includes a third NDI, where the third NDI is used to indicate that the user equipment retransmits data or transmits new data in the HARQ channels of the two uplink subframes.
  • Another aspect of the present invention provides a data transmission method, which may include:
  • the user equipment receives downlink control information from the access device, where the downlink control information includes an uplink subframe scheduling indication, where the uplink subframe scheduling indication is used to indicate that two uplink subframe transmission data is scheduled;
  • the downlink control information further includes a first new data indicating NDI and a second NDI
  • the first NDI and the second NDI are used to indicate an NDI of the hybrid automatic repeat request HARQ channel of the two uplink subframes, respectively. And retransmitting data or transmitting new data in the HARQ channel of the two uplink subframes according to the value of the NDI indicated by the first NDI and the second NDI;
  • the downlink control information further includes a third NDI, where the third NDI is used to indicate that the user equipment retransmits data or transmits new data in the HARQ channels of the two uplink subframes,
  • the HARQ channels of the uplink subframes all retransmit data or both transmit new data.
  • an access device which may include:
  • the transmitter is configured to send downlink control information to the user equipment by using the antenna, where the downlink control information includes an uplink subframe scheduling indication, where the uplink subframe scheduling indication is used to indicate that two uplink subframe transmissions are scheduled to be scheduled.
  • the downlink control information further includes a first new data indicating NDI and a second NDI, where the first NDI and the second NDI are respectively used to indicate a hybrid automatic repeat request HARQ channel of the two uplink subframes
  • the downlink control information further includes a third NDI, where the third NDI is used to indicate that the user equipment retransmits data or transmits in the HARQ channel of the two uplink subframes. New data.
  • a user equipment which may include: a receiver, configured to receive, by using an antenna, downlink control information from an access device, where the downlink control information includes an uplink subframe scheduling indication, where the uplink subframe scheduling indication is used to indicate that two uplink subframe transmission data is scheduled;
  • a transmitter configured to: when the downlink control information further includes a first new data indication NDI and a second NDI, the first NDI and the second NDI are respectively used to indicate hybrid automatic retransmission of the two uplink subframes And requesting the NDI value of the HARQ channel, retransmitting data or transmitting new data in the HARQ channel of the two uplink subframes according to the value of the NDI indicated by the first NDI and the second NDI; or When the downlink control information further includes the third NDI, the third NDI is used to indicate that the user equipment retransmits data or transmits new data in the HARQ channels of the two uplink subframes, where the two uplinks are The HARQ channel of the subframe retransmits data or both transmits new data.
  • Another aspect of the present invention provides a communication system, which may include:
  • the DCI may be sent to the user equipment, where the DCI is used to indicate that two uplink subframe transmissions are scheduled to be scheduled.
  • An uplink subframe scheduling indication of the data if the DCI further includes a first NDI and a second NDI, where the first NDI and the second NDI are used to indicate an NDI value of the HARQ channel of the two uplink subframes, respectively, or
  • the downlink control information further includes a third NDI, where the third NDI is used to indicate that the user equipment retransmits data or transmits new data in the HARQ channels of the two uplink subframes.
  • the access device can indicate the data transmission mode (transmitting new data or retransmitting data) of the HARQ channel of the two uplink subframes to the user equipment through a DCI, and is also beneficial to reduce the PDCCH as much as possible. The consumption of resources.
  • FIG. 1 is a schematic flowchart of a resource scheduling method according to an embodiment of the present disclosure
  • FIG. 2 is a schematic flowchart of a data transmission method according to an embodiment of the present invention.
  • FIG. 3 is a schematic structural diagram of an access device according to an embodiment of the present disclosure
  • FIG. 4 is a schematic structural diagram of a user equipment according to an embodiment of the present disclosure
  • FIG. 4 is a schematic structural diagram of another user equipment according to an embodiment of the present disclosure.
  • FIG. 5 is a schematic diagram of a communication system according to an embodiment of the present invention.
  • Embodiments of the present invention provide a resource scheduling method, a data transmission method, and a device and system.
  • the access device refers to an entity that can implement the wireless access management function of the user equipment, and the access device may have different names, locations, and product forms in different networks.
  • an access device mentioned in the following embodiments of the present invention may be referred to as: Universal Mobile Telecommunications System (UMTS), Terrestrial Radio Access Network (E-UTRAN, Evolved UMTS Territorial Radio Access Network)
  • UMTS Universal Mobile Telecommunications System
  • E-UTRAN Terrestrial Radio Access Network
  • E-UTRAN Evolved UMTS Territorial Radio Access Network
  • eNodeB evolved base station
  • HeNB home base station
  • An embodiment of the resource scheduling method of the present invention may include: sending downlink control information (DCI, Downlink Control Information) to the user equipment, where the downlink control information includes an uplink subframe adjustment
  • the first indication is that the uplink subframe scheduling indication is used to indicate that two uplink subframe transmission data is scheduled;
  • the downlink control information further includes a first new data indication (NDI, New Date Indication) and a second NDI, where the first NDI is And the second NDI is used to indicate the NDI value of the Hybrid Automatic Repeat Request (HARQ) channel of the two uplink subframes, respectively, or the downlink control information further includes a third NDI, where the third The NDI is used to indicate that the user equipment retransmits data or transmits new data in the HARQ channels of the two uplink subframes.
  • DCI Downlink Control Information
  • an exemplary implementation step may include:
  • the access device generates downlink control information.
  • a cell usually corresponds to a subframe ratio.
  • a cell can match the uplink-downlink subframe ratio of 0, ratio 1, or ratio 2.
  • a cell corresponding to the matching ratio 0 may be simply referred to as a matching 0 cell
  • a cell corresponding to the matching ratio 1 may be simply referred to as a matching 1 cell, and so on.
  • the downlink control information includes an uplink subframe scheduling indication, where the uplink subframe scheduling indication is used to indicate that two uplink subframe transmission data is scheduled, and the uplink subframe scheduling indication may be, for example, indicating that two uplink subframes are scheduled to be scheduled.
  • the corresponding uplink index number (Ullndex) of the transmitted data takes a value;
  • the downlink control information may further include a first NDI and a second NDI, wherein the first NDI and the second NDI are NDI values indicated by the NDI, and the saved Corresponding to the NDI value (where the saved NDI value corresponds to the HARQ channel number of an uplink subframe corresponding to the first NDI) (for example, the NDI values are all "0" or both are "1"), then Indicates that the user equipment is in the HARQ channel of the uplink subframe, and if the value of the NDI indicated by the first NDI is opposite to the value of the saved corresponding NDI, it indicates that the user equipment is in the HARQ of the uplink subframe.
  • the value of the NDI indicated by the second NDI is the same as the value of the saved NDI (the saved NDI value corresponds to the HARQ channel number of an uplink subframe corresponding to the second NDI) (for example, If the NDI value is "0" or both is "1", it indicates that the user equipment retransmits the data in the HARQ channel of the uplink subframe, if the NDI value indicated by the second NDI is the value, and the saved corresponding NDI If the value is reversed, it indicates that the user equipment transmits new data in the HARQ channel of the uplink subframe.
  • the third NDI is used to indicate that the user equipment retransmits data or transmits new data in the HARQ channels of the two uplink subframes. For example, if the third NDI occupies 1 bit, the default between the access device and the user equipment may be agreed. When the NDI indicated by the third NDI is "1", the user equipment is indicated in the above two The HARQ channel of the uplink subframe retransmits data, and when the NDI value indicated by the third NDI is "0", it indicates that the user equipment transmits new data in the HARQ channel of the two uplink subframes, and so on. .
  • the downlink control information generated by the access device may be, for example, downlink control information DCI0 (or possibly other format DCI) in the zero format. If the downlink control information includes the first NDI and the second NDI, the first NDI and the second NDI may occupy 1 bit respectively (of course, the first NDI and/or the second NDI may also occupy multiple Bit). Alternatively, if the downlink control information includes a third NDI, the third NDI may occupy 1 bit (of course, the third NDI may also occupy multiple bits).
  • the following takes the LTE system as an example.
  • the scheduling needs to allocate various air interface resources reasonably, which is to minimize the air interface resource overhead and ensure the throughput performance of the user plane.
  • the DCI generated by the access device is carried by the PDCCH.
  • the DCI may include uplink and downlink resource allocations and other control information of one UE or a group of UEs.
  • each PDCCH uses one or more consecutive Control Channel Elements (CCE, Control Channel Element) propose
  • the uplink physical channel includes: a physical uplink shared channel (PUSCH), a physical uplink control channel (PUCCH), a physical random access channel (PRACH), and a physical random access channel (PRACH), wherein, the PUCCH is located at both ends of the entire frequency band, the PUSCH is located in the middle of the frequency band, and the PUSCH carries uplink service data, which uses the HARQ of the N-channel "stop-and-wait" protocol, and uplink synchronization, which means that in a fixed period, in a specific period The subframe is retransmitted to the initial subframe of the Cyclic Redundancy Check (CRC) error.
  • CRC Cyclic Redundancy Check
  • the DCI (DCI0) of the format 0 is generally used for PUSCH scheduling, and the DCI0 is carried by the PDCCH channel.
  • the DCI0 may include the following information:
  • Resource Block Allocation and Frequency Hopping Resource Allocation - Bit For PUSCH frequency hopping: NUL - hop most significant bits are used to obtain log 2 (V-( V- +l)/2) Op
  • the bits provide resource allocation for the first time slot of the uplink subframe
  • Bits provide resource allocation for uplink subframes; modulation coding scheme and redundancy version - 5 bits;
  • the new data indicates NDI - 1 to 2 bits (such as the first NDI and the second NDI, or the third NDI); the transmission power control command of the scheduled PUSCH - 2 bits;
  • the demodulation reference signal is cyclically shifted by one to three bits;
  • Uplink index number Ullndex - 2 bits (This field usually appears in the TDD uplink and downlink ratio 0); Downlink allocation index - 2 bits (this field usually appears in the TDD uplink and downlink ratio 1-6);
  • CQI Channel Quality Indicator
  • DCI0 can be padded with 0 until the payload size is equal to the payload size of the format DCI-1A.
  • the access device may indicate, by using the value of the uplink index (Ullndex) included in the generated downlink control information, whether to schedule two uplink subframes at the same time.
  • Ullndex uplink index
  • k corresponds to Table 8-2 k for TDD configurations 0-6 in the 3GPP (The 3rd Generation Partnership Project) TS 36.213 V9.3.0, where n represents the current subframe number.
  • the value of the Ullndex included in the generated DCI0 may be "11" to indicate to the user equipment that it simultaneously schedules two. Uplink subframes.
  • the access device sends the downlink control information to the user equipment.
  • the downlink control information is sent to the user equipment through the antenna, or the access device may send the downlink control information to the user equipment through the antenna.
  • the steps of generating and transmitting the downlink control information may be implemented by interspersed together.
  • the user equipment may receive the downlink control information from the access device, where the downlink control information includes an uplink subframe scheduling indication, where the uplink subframe scheduling indication is used to indicate that two uplink subframes are scheduled to be transmitted;
  • the information further includes a first NDI and a second NDI, where the first NDI and the second NDI are used to indicate the NDI value of the HARQ channel of the two uplink subframes, respectively, and the user equipment can be based on the first NDI and the second The value of the NDI indicated by the NDI, retransmitting data or transmitting new data in the HARQ channel of the two uplink subframes, or if the downlink control information further includes the third NDI, the user equipment may be in the two uplink subframes.
  • the HARQ channel transmits new data or retransmits data.
  • the user equipment can obtain the relevant information carried by the user equipment, for example, by analyzing the received downlink control information. It can be seen that, in this embodiment, if the access device needs to schedule two uplink subframes to transmit data through one downlink subframe, the DCI can be generated and sent to the user equipment, where the DCI is used to indicate that two uplink subframes are scheduled to be scheduled.
  • An uplink subframe scheduling indication of the frame transmission data if the DCI further includes a first NDI and a second NDI, where the first NDI and the second NDI are used to indicate an NDI value of the HARQ channel of the two uplink subframes, respectively, or
  • the downlink control information further includes a third NDI, where the third NDI is used to indicate that the user equipment retransmits data or transmits new data in the HARQ channels of the two uplink subframes.
  • the access device can indicate the data transmission mode (transmitting new data or retransmitting data) of the HARQ channel of the two uplink subframes to the user equipment through a DCI, and is also beneficial to reduce the PDCCH as much as possible.
  • the consumption of resources The following is described from the perspective of the user equipment.
  • An embodiment of the data transmission method of the present invention may include: receiving, by the user equipment, downlink control information from the access device, where the downlink control information includes an uplink subframe scheduling indication, where the uplink subframe scheduling indication is used to indicate scheduling The uplink subframe transmits data; if the downlink control information further includes a first new data indication NDI and a second NDI, the first NDI and the second NDI are respectively used to indicate a hybrid automatic repeat request HARQ channel of the two uplink subframes The NDI value is used to retransmit data or transmit new data in the HARQ channel of the two uplink subframes according to the value of the NDI indicated by the first NDI and the second NDI; or, if the downlink control information further includes a third NDI, where the third NDI is used to indicate that the user equipment retransmits data or transmits new data in the HARQ channels of the two uplink subframes, and the data is retransmitted or transmitted in the HARQ
  • the cell where the user equipment is located is a matching 0 cell or other message that at least two uplink subframes are matched;
  • the user equipment is configured according to the first The value of the NDI indicated by the NDI and the second NDI is the weight of the HARQ channel in the two uplink subframes.
  • the third NDI is used to indicate that the user equipment retransmits data or transmits new data in the HARQ channels of the two uplink subframes, The user equipment retransmits data or transmits new data in the HARQ channels of the two uplink subframes.
  • the downlink control information further includes the first NDI and the second NDI, and if the NDI value indicated by the first NDI is a value, and the saved corresponding NDI value is used, the NDI value corresponds to the first NDI.
  • the HARQ channel number of the uplink subframes is the same (for example, the NDI values are both "0" or both "1"), indicating that the user equipment retransmits the data in the HARQ channel of the uplink subframe, if the first NDI is The value of the indicated NDI is opposite to the saved HARD channel value (the NDI value corresponds to the HARQ channel number of an uplink subframe corresponding to the first NDI), and indicates that the user equipment is in the HARQ channel of the uplink subframe.
  • the new data is transmitted, similar to the indication of the second NDI, if the value of the NDI indicated by the second NDI is the same as the value of the saved NDI (the value of the NDI corresponds to the HARQ of an uplink subframe corresponding to the second NDI).
  • the channel number is the same (for example, both NDI values are "0" or both are "1"), it indicates that the user equipment retransmits data in the HARQ channel of the uplink subframe, if the NDI indicated by the second NDI Value, corresponding to the saved NDI value (the NDI value pair In contrast to the HARQ channel number of an uplink subframe corresponding to the second NDI, the user equipment is instructed to transmit new data in the HARQ channel of the uplink subframe.
  • the downlink control information further includes the third NDI
  • the NDI value indicated by the third NDI is " ⁇ ”
  • the user equipment is instructed to retransmit the data in the HARQ channel of the two uplink subframes.
  • the value of the NDI indicated by the third NDI is "0" it indicates that the user equipment transmits new data in the HARQ channel of the two uplink subframes, and so on.
  • the user equipment may also save the two NDIs corresponding to the HARQ channel numbers of the two uplink subframes in order to maintain the synchronization of the NDI values saved by the user equipment and the access device.
  • Value if the corresponding two NDI values have been saved before, the two NDI values can be updated, and the NDI value is the value of the third NDI (or the NDI value is determined by the third NDI) The value conversion is obtained;), so that the two NDI values saved by the user equipment are synchronized with the corresponding two NDI values saved in the access device.
  • the access device and the user equipment may also have a default agreement. If the corresponding two NDIs stored in the access device are "11", the third NDI is The value can also be " ⁇ , the user equipment updates the saved two NDI values according to the value of the third NDI to "11", if the corresponding two NDI values stored in the access device are "00", The NDI value of the third NDI may also be "0", and the user equipment may update the saved two NDI values according to the NDI value of the third NDI to be "00", and so on.
  • the DCI can be generated and sent to the user equipment, where the DCI is used to indicate that two uplink subframes are scheduled to be scheduled.
  • An uplink subframe scheduling indication of the frame transmission data if the DCI further includes a first NDI and a second NDI, where the first NDI and the second NDI are used to indicate an NDI value of the HARQ channel of the two uplink subframes, respectively, or
  • the downlink control information further includes a third NDI, where the third NDI is used to indicate that the user equipment retransmits data or transmits new data in the HARQ channels of the two uplink subframes.
  • the user equipment After receiving the DCI from the access device, the user equipment retransmits data or transmits new data in the HARQ channel of the two uplink subframes according to the NDI value of the NDI carried in the DCI.
  • the access device can indicate the data transmission mode (transmitting new data or retransmitting data) of the HARQ channel of the two uplink subframes to the user equipment by using one DCI, and is also beneficial to reduce the PDCCH resources as much as possible. Consumption.
  • an access device 300 may include:
  • Antenna 310 and transmitter 320 Antenna 310 and transmitter 320;
  • the transmitter 320 is configured to send downlink control information to the user equipment by using the antenna 310, where the downlink control information includes an uplink subframe scheduling indication, where the uplink subframe scheduling indication is used to indicate that two uplink subframes are scheduled to be transmitted;
  • the control information further includes a first new data indicating NDI and a second NDI, where the first NDI and the second NDI are used to indicate the NDI value of the hybrid automatic repeat request HARQ channel of the two uplink subframes respectively; or
  • the downlink control information further includes a third NDI, where the third NDI is used to indicate that the user equipment retransmits data or transmits new data in the HARQ channels of the two uplink subframes.
  • the downlink control information sent by the transmitter 320 is a downlink control in the format 0.
  • the transmitter 320 Send downlink control information to the user equipment, where the downlink control information includes an uplink subframe scheduling indication, where the uplink subframe scheduling indication is used to indicate that two uplink subframe transmission data is scheduled, and the uplink subframe scheduling indication may be, for example, And indicating, by the first NDI and the second NDI, the first NDI and the second NDI are respectively used to indicate the foregoing two
  • the value of the NDI of the HARQ channel of the uplink subframe is, for example, the value of the NDI indicated by the first NDI, and the value of the saved NDI corresponding to the saved NDI value.
  • the user equipment is instructed to retransmit the data in the HARQ channel of the uplink subframe. If the value of the NDI indicated by the first NDI is opposite to the value of the saved corresponding NDI, it indicates that the user equipment transmits new data in the HARQ channel of the uplink subframe.
  • the value of the NDI indicated by the second NDI is the same as the value of the saved NDI (where the saved NDI value corresponds to the HARQ channel number of an uplink subframe corresponding to the second NDI) (For example, if the value of the NDI is "0" or both is "1"), it indicates that the user equipment retransmits the data in the HARQ channel of the uplink subframe, if the value of the NDI indicated by the second NDI is the same as the saved value. If the value of the corresponding NDI is reversed, it indicates that the user equipment transmits new data in the HARQ channel of the uplink subframe.
  • the third control information further includes a third
  • the third NDI is used to indicate that the user equipment retransmits data or transmits new data in the HARQ channels of the two uplink subframes.
  • the third NDI occupies 1 bit, and the access device and the user equipment
  • the NDI value indicated by the third NDI is "1”
  • the NDI indicated by the third NDI is taken.
  • the value is "0”
  • the access device 300 in this embodiment may be the access device in the foregoing method embodiment, and the functions of the foregoing functional modules may be specifically implemented according to the method in the foregoing method embodiment, and the specific implementation process may be implemented. Referring to the related description in the above method embodiment, no longer here - Said.
  • the DCI can be generated and sent to the user equipment, where the DCI includes The uplink subframe scheduling indication of the subframe transmission data, if the DCI further includes the first NDI and the second NDI, where the first NDI and the second NDI are used to indicate the NDI value of the HARQ channel of the two uplink subframes, Or, the downlink control information further includes a third NDI, where the third NDI is used to indicate that the user equipment retransmits data or transmits new data in the HARQ channels of the two uplink subframes.
  • a user equipment 400 provided by an embodiment of the present invention may include: a receiver 410 and a transmitter 420.
  • the receiver 410 is configured to receive downlink control information from the access device by using an antenna, where the downlink control information includes an uplink subframe scheduling indication, where the uplink subframe scheduling indication is used to indicate that two uplink subframes are scheduled to transmit data;
  • the transmitter 420 is configured to: when the downlink control information received by the receiver 410 further includes the first new data indication NDI and the second NDI, the first NDI and the second NDI are used to indicate the mixing of the two uplink subframes, respectively.
  • the control information further includes the third NDI
  • the third NDI is used to indicate that the user equipment retransmits data or transmits new data in the HARQ channels of the two uplink subframes, and the HARQ channel in the two uplink subframes. Both retransmit data or transfer new data.
  • the user equipment 400 may further include: taking a value (if the two corresponding NDI values have been saved before, the two NDI values may be updated), and the NDI is taken.
  • the value may be the value of the third NDI (or the value of the NDI is obtained by the value conversion of the third NDI), or the value of the NDI is the first NDI and the second NDI (or, the value of the NDI is determined by the first A value conversion of an NDI and a second NDI is obtained;
  • the memory 430 stores the two NDI values corresponding to the HARQ channel numbers of the two uplink subframes. If the corresponding two NDI values have been saved before, the memory 430 can be updated and saved.
  • the two NDI values are values, and the value of the NDI is the value of the third NDI (or the value of the NDI is obtained by the value of the third NDI;), so that the two NDI values saved by the user equipment are obtained. It is synchronized with the two NDI values saved in the access device.
  • the access device and the user equipment may also have a default agreement. If the corresponding two NDIs stored in the access device are "11", the third NDI is The value of the two NDIs stored in the access device is "00", and the value of the corresponding two NDIs stored in the access device is "00". The value of the third NDI may also be "0", and the memory 430 may update the saved two corresponding NDI values to "00" according to the value of the third NDI, and so on.
  • the user equipment 400 in this embodiment may be the user equipment in the foregoing method embodiment, and the functions of the foregoing functional modules may be specifically implemented according to the method in the foregoing method embodiment. The related description in the method embodiment is not repeated here.
  • the DCI can be generated and sent to the user equipment, where the DCI is used to indicate that two uplink subframes are scheduled to be scheduled.
  • An uplink subframe scheduling indication of the frame transmission data if the DCI further includes a first NDI and a second NDI, where the first NDI and the second NDI are used to indicate an NDI value of the HARQ channel of the two uplink subframes, respectively, or
  • the downlink control information further includes a third NDI, where the third NDI is used to indicate that the user equipment retransmits data or transmits new data in the HARQ channels of the two uplink subframes.
  • the user equipment 400 After receiving the DCI from the access device, the user equipment 400 retransmits data or transmits new data in the HARQ channel of the two uplink subframes according to the NDI value of the NDI carried by the DCI.
  • the access device can indicate the data transmission mode (transmitting new data or retransmitting data) of the HARQ channel of the two uplink subframes to the user equipment through a DCI, and is also beneficial to reduce the PDCCH resources as much as possible. Consumption.
  • the embodiment of the invention further provides a communication system, which comprises: an access device 300 or a user device 400.
  • an embodiment of the present invention further provides a communication system, including: an access device 510 and a user equipment 520.
  • the access device 510 is configured to send downlink control information to the user equipment 520, where the downlink control information includes an uplink subframe scheduling indication, where the uplink subframe scheduling indication is used to indicate that two uplink subframe transmission data is scheduled;
  • the information further includes a first new data indicating NDI and a second NDI, where the first NDI and the second NDI are respectively used to indicate an NDI value of the hybrid automatic repeat request HARQ channel of the two uplink subframes; or, the downlink
  • the control information further includes a third NDI, where the third NDI is used to indicate that the user equipment 520 retransmits data or transmits new data in the HARQ channels of the two uplink subframes.
  • the user equipment 520 is configured to receive the downlink control information from the access device 510. If the downlink control information further includes a first new data indication NDI and a second NDI, the first NDI and the second NDI are used to indicate the foregoing two
  • the hybrid automatic repeat request of the uplink subframe is the NDI value of the HARQ channel, and the data is retransmitted or transmitted in the HARQ channel of the two uplink subframes according to the NDI value indicated by the first NDI and the second NDI.
  • the downlink control information further includes a third NDI, where the third NDI is used to indicate that the user equipment 520 retransmits data or transmits new data in the HARQ channels of the two uplink subframes,
  • the HARQ channel of the subframe retransmits data or both transmits new data.
  • the user equipment 520 may be further configured to: save two NDI values corresponding to the HARQ channel numbers of the two uplink subframes (if the two corresponding NDI values have been saved previously, the two NDI values may be updated.
  • the value of the NDI is the value of the third NDI (or the value of the NDI is obtained by the value of the third NDI), or the value of the NDI is the first NDI and the second NDI (or the value of the NDI) Obtained by the value conversion of the first NDI and the second NDI ;).
  • the user equipment 520 in order to maintain the synchronization of the NDI values held by the user equipment 520 and the access device 510, the user equipment 520 saves the two NDIs corresponding to the HARQ channel numbers of the two uplink subframes.
  • the value (if the corresponding two NDI values have been saved previously, the memory 430 may update the two NDI values), the NDI value is the value of the third NDI (or the NDI value is determined by the third value)
  • the value conversion of the NDI is obtained;), so that the two NDI values saved by the user equipment 520 are synchronized with the corresponding two NDI values stored in the access device 510.
  • the access device 510 and the user equipment 520 may also be agreed by default. If the corresponding two NDIs stored in the access device 510 are "11", then The value of the three NDIs may also be "1", and the user equipment 520 updates the saved correspondence according to the value of the third NDI. The value of the two NDIs is "11". If the value of the two NDIs stored in the access device 510 is "00", the value of the third NDI may be "0", and the user equipment 520 may The value of the three NDI updates has been saved corresponding to two NDI values of "00", and so on.
  • the access device 510 in this embodiment may be the access device in the foregoing method embodiment
  • the user device 520 may be the user device in the foregoing method embodiment
  • the functions of the foregoing functional modules may be The method in the foregoing method embodiment is specifically implemented.
  • the specific implementation process refer to the related description in the foregoing method embodiment, and details are not described herein again.
  • the DCI may be generated and sent to the user equipment, where the DCI is used to indicate that two uplink subframes are scheduled to be scheduled.
  • An uplink subframe scheduling indication of the frame transmission data if the DCI further includes a first NDI and a second NDI, where the first NDI and the second NDI are used to indicate an NDI value of the HARQ channel of the two uplink subframes, respectively, or
  • the downlink control information further includes a third NDI, where the third NDI is used to indicate that the user equipment retransmits data or transmits new data in the HARQ channels of the two uplink subframes.
  • the user equipment 400 After receiving the DCI from the access device, the user equipment 400 retransmits data or transmits new data in the HARQ channel of the two uplink subframes according to the NDI value of the NDI carried by the DCI.
  • the access device can indicate the data transmission mode (transmitting new data or retransmitting data) of the HARQ channel of the two uplink subframes to the user equipment through a DCI, and is also beneficial to reduce the PDCCH resources as much as possible. Consumption.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

La présente invention concerne un procédé d'ordonnancement de ressources ainsi qu'un procédé, un dispositif et un système de transmission de données. Si un dispositif d'accès doit ordonnancer deux sous-trames en liaison ascendante de façon à transmettre simultanément des données au moyen d'une sous-trame en liaison descendante, il peut transmettre à un dispositif d'utilisateur des informations de contrôle en liaison descendante (DCI). Les DCI comportent une indication d'ordonnancement de sous-trames en liaison ascendante destinée à indiquer l'ordonnancement de deux sous-trames en liaison ascendante de manière à transmettre des données. Si les DCI comportent également des première et deuxième indications de nouvelles données (NDI), ces indications servent respectivement à indiquer les valeurs NDI des canaux de demande de répétition automatique hybride (HARQ) des deux sous-trames en liaison ascendante. Si les DCI comportent en plus une troisième NDI, celle-ci sert à indiquer que le dispositif d'utilisateur retransmet des données ou transmet de nouvelles données dans les deux canaux HARQ des deux sous-trames en liaison ascendante. Sur la base du mécanisme d'indication, le dispositif d'accès peut constater que les modes de transmission de données des canaux HARQ des deux sous-trames en liaison ascendante sont indiqués au dispositif d'utilisateur par une information faisant partie des DCI. De plus, le dispositif est avantageux car il permet le plus souvent de réduire le gaspillage des ressources du canal de contrôle physique en liaison descendante (PDCCH).
PCT/CN2011/076400 2011-06-27 2011-06-27 Procédé d'ordonnancement de ressources, procédé, dispositif et système de transmission de données Ceased WO2012167459A1 (fr)

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CN201180000923.1A CN103053212B (zh) 2011-06-27 2011-06-27 资源调度方法和数据传输方法及设备和系统
PCT/CN2011/076400 WO2012167459A1 (fr) 2011-06-27 2011-06-27 Procédé d'ordonnancement de ressources, procédé, dispositif et système de transmission de données

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