WO2012136109A1 - Procédé, système et dispositif pour la programmation et la réception de données - Google Patents

Procédé, système et dispositif pour la programmation et la réception de données Download PDF

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Publication number
WO2012136109A1
WO2012136109A1 PCT/CN2012/073142 CN2012073142W WO2012136109A1 WO 2012136109 A1 WO2012136109 A1 WO 2012136109A1 CN 2012073142 W CN2012073142 W CN 2012073142W WO 2012136109 A1 WO2012136109 A1 WO 2012136109A1
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Prior art keywords
information
dci information
downlink
dci
downlink subframe
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PCT/CN2012/073142
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English (en)
Chinese (zh)
Inventor
林亚男
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电信科学技术研究院
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Publication of WO2012136109A1 publication Critical patent/WO2012136109A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal

Definitions

  • the present invention relates to the field of wireless communication technologies, and in particular, to a method, system, and device for scheduling and receiving data. Background technique
  • the base station schedules (grant) a data transmission (except TDD uplink and downlink configuration 0) through a scheduling signaling, and uses a cell dedicated to the terminal (UE).
  • the Cell-Radio Network Temporary Identity (C-RNTI) scrambles the Cyclic Redundancy Check (CRC) in the scheduling signaling.
  • the DL grant in the downlink subframe n is used to schedule downlink data transmission in the subframe.
  • the UL grant in the downlink subframe is used to schedule uplink data transmission in the uplink subframe w+4.
  • the UL grant in the downlink subframe w is used to schedule the uplink data transmission in the uplink subframe w + A, where A is as shown in Table 1.
  • the UL grant is used to schedule the uplink subframe w. + Uplink data transmission in A, where A is as shown in Table 1; if the Least Significant Bit (LSB) in the UL index information is 1, the UL grant is used to schedule the uplink subframe w + 7 Uplink data transmission; if both MSB and LSB are 1, the UL grant is used to schedule uplink data transmission in uplink subframes w + A and w + 7.
  • MSB Most Significant Bit
  • index information in the UL grant of the downlink subframe w is 1
  • the UL grant is used to schedule the uplink subframe w. + Uplink data transmission in A, where A is as shown in Table 1; if the Least Significant Bit (LSB) in the UL index information is 1, the UL grant is used to schedule the uplink subframe w + 7 Uplink data transmission; if both MSB and LSB are 1, the UL grant is used to schedule uplink data transmission in uplink subframes w + A and w + 7.
  • DCI Downlink Control Information
  • the information contained in each DCI format is different and the length is different.
  • the DCI format that can be used by the base station for data scheduling is not necessarily the same. See Table 2 and Table 3 for details.
  • Table 2 Available DCI formats for each downlink transmission mode
  • the LTE downlink uses the Hybrid Automatic Repeat ReQuest (HARQ) protocol to perform a data transmission on a downlink HARQ process and the base station scheduling, and waits for a correct response command (ACKnowledge, ACK)/error. Before the feedback of the Negative ACKnowledge (NACK), the process is temporarily suspended. After the base station receives the ACK/NACK fed back by the terminal, it determines whether to send new data or retransmit the old data according to the specific situation of the feedback information. In order to improve system efficiency, the base station can initiate its parallel in the waiting process. His HARQ process.
  • HARQ Hybrid Automatic Repeat ReQuest
  • the maximum number of downlink HARQ processes is related to the uplink and downlink configuration, as shown in Table 4.
  • a DCI is obtained by using a physical downlink control channel (PDCCH) for blind detection.
  • the PDCCH blind detection is that the terminal attempts to decode various possible DCI formats and possible resource locations without knowing the DCI format of the current PDCCH and the resource location occupied by the PDCCH. If the decoding is successful and the CRC is successful, If the scrambling sequence is the same as the radio network Temporary Identity (RNTI) of the UE, the DCI carried by the PDCCH is considered as downlink control information of the UE.
  • the number of PDCCH blind detections is related to the number of DCI formats of different lengths to be detected, and is also related to the number of PDCCH candidate sets.
  • the UE In order to reduce the number of blind detections, the UE only needs to blindly check two DCI formats for each downlink transmission mode, and the size of the DCI format 0 is the same as the DCI format 1 A. As the capacity of the system continues to increase, the current PDCCH scheduling mode cannot meet the requirements of the increasing scheduling signaling.
  • the method, system and device for scheduling and receiving data provided by the embodiments of the present invention enable the requirements of the increasing scheduling signaling to be met under the condition that the system capacity is continuously improved.
  • first downlink control signaling DCI information for scheduling downlink data in the downlink subframe n Determining, by the network side, first downlink control signaling DCI information for scheduling downlink data in the downlink subframe n, and determining at least one second DCI information for scheduling downlink data in at least one downlink subframe after the downlink subframe n, Each of the second DCI information separately schedules different downlink subframes, where n is a positive integer;
  • the network side sends the first DCI information to the terminal by using the physical downlink control channel PDCCH in the downlink subframe n, and sends the second DCI information to the terminal by using the PDCCH in the downlink subframe n';
  • n' is a positive integer, and n'>n; if n'> n, the downlink subframe n is the network side before the downlink subframe n' The downlink subframe of the first DCI information is sent to the terminal most recently.
  • the terminal receives the downlink data in the downlink subframe n according to the first DCI information received in the downlink subframe n, where n is a positive integer;
  • the terminal receives downlink data of the scheduled downlink subframes in the N downlink subframes according to the second DCI information received in the downlink subframe n';
  • n' is a positive integer, and n, >n; if n'> n, the downlink subframe n is the downlink sub-interface of the terminal that received the first DCI information before the downlink subframe n'; Positive integer, ⁇ N p ss , N process The number of HARQ maximum processes.
  • a determining module configured to determine first DCI information used to schedule downlink data in the downlink subframe n, and determine at least one second DCI information used to schedule downlink data in at least one downlink subframe after the downlink subframe n, where each The second DCI information respectively schedules different downlink subframes, where n is a positive integer;
  • a scheduling module configured to send the first DCI information to a terminal by using a PDCCH in a downlink subframe n, and send the second DCI information to the terminal by using a PDCCH in a downlink subframe n′;
  • n' is a positive integer, and n' > n; if n' > n, the downlink subframe n is a downlink subframe in which the network side transmits the first DCI information to the terminal most recently before the downlink subframe n'.
  • the first receiving module is configured to receive downlink data in the downlink subframe n according to the first DCI information received in the downlink subframe n, where n is a positive integer;
  • a second receiving module configured to receive downlink data of the scheduled downlink subframes in the N downlink subframes according to the second DCI information received in the downlink subframe n′;
  • n' is a positive integer, and n, >n; if n'> n, the downlink subframe n is the downlink sub-interface of the terminal that received the first DCI information before the downlink subframe n'; N is a positive integer , ⁇ N p A ⁇ . c ⁇ is the maximum number of downstream HARQ processes.
  • a network side device configured to determine first downlink control signaling DCI information used for scheduling downlink data in the downlink subframe n, and determine at least one downlink data used to schedule downlink data in at least one downlink subframe after the downlink subframe n
  • the second DCI information where each second DCI information separately schedules different downlink subframes, and sends the first DCI information to the terminal through the physical downlink control channel PDCCH in the downlink subframe n, and through the downlink subframe n' Transmitting, by the PDCCH, the second DCI information to the terminal;
  • the terminal is configured to receive downlink data in the downlink subframe n according to the first DCI information received in the downlink subframe n, And receiving, according to the second DCI information received in the downlink subframe n', downlink data of the scheduled downlink subframes in the N downlink subframes;
  • n is a positive integer
  • n' is a positive integer
  • the downlink subframe n is the downlink of the terminal that received the first DCI information most recently before the downlink subframe n'Frame
  • N is a positive integer
  • W ⁇ N process , ⁇ process is the number of downstream HARQ maximum processes.
  • the system can continuously meet the requirement of increasing scheduling signaling and improve the efficiency of downlink control signaling. And system performance.
  • FIG. 1 is a schematic structural diagram of a system for receiving data according to an embodiment of the present invention
  • FIG. 2 is a schematic structural diagram of a network side device according to an embodiment of the present invention.
  • FIG. 3 is a schematic structural diagram of a terminal according to an embodiment of the present invention.
  • FIG. 4 is a schematic flowchart of a method for scheduling data according to an embodiment of the present invention.
  • FIG. 5 is a schematic flowchart of a method for receiving data according to an embodiment of the present invention.
  • the network side sends the first DCI information for scheduling downlink data in the downlink subframe n through the PDCCH in the downlink subframe n, and sends at least one used for scheduling downlink to the terminal by using the PDCCH in the downlink subframe n′.
  • Second DCI information of downlink data in at least one downlink subframe after sub-frame n wherein each second DCI information separately schedules different downlink subframes, n is a positive integer; n' is a positive integer, and n'>n; if n 'n', the downlink subframe n is the downlink subframe in which the network side transmits the first DCI information to the terminal most recently before the downlink subframe n'. Since the PDCCH of one downlink subframe can schedule data of subsequent downlink subframes, the system can continuously meet the requirement of increasing scheduling signaling and improve the efficiency of downlink control signaling. And system performance.
  • the solution of the embodiment of the present invention can be applied to an LTE system, and can also be applied to other systems that require DCI for scheduling, such as an LTE-A system.
  • the system for receiving data in the embodiment of the present invention includes: a network side device 10 and a terminal 20.
  • the network side device 10 is configured to determine first DCI information used for scheduling downlink data in the downlink subframe n, and determine at least one second DCI information used to schedule downlink data in at least one downlink subframe after the downlink subframe n, Each of the second DCI information respectively schedules different downlink subframes, where n is a positive integer; and the PDCCH in the downlink subframe n is used.
  • the terminal sends the first DCI information, and sends the second DCI information to the terminal by using the PDCCH in the downlink subframe n'; wherein n' is a positive integer, and n'>n; if n'>n, the downlink subframe n is the network side
  • the device 10 transmits the downlink subframe of the first DCI information to the terminal most recently before the downlink subframe n'.
  • the terminal 20 is configured to receive downlink data in the downlink subframe n according to the first DCI information received in the downlink subframe n, and receive N downlink subframes according to the second DCI information received in the downlink subframe n′.
  • the downlink data of the scheduled downlink subframe in the frame where n' is a positive integer, and n, >n; if n, > n, the downlink subframe n is the last received by the terminal before the downlink subframe n'
  • a downlink subframe of DCI information; N is a positive integer, and W ⁇ N process , N process is the number of downlink HARQ maximum processes.
  • the terminal 20 receives the first DCI information in the scheduled downlink subframe n, and receives the downlink data in the downlink subframe n according to the first DCI information;
  • the terminal 20 receives the first DCI information in the scheduled downlink subframe n and receives the second DCI information in the downlink subframe n', and receives the downlink data in the downlink subframe n according to the first DCI information, according to the second
  • the DCI information receives downlink data in the scheduled N consecutive downlink subframes.
  • the network side device 10 determines the DCI format corresponding to the first DCI information according to the downlink transmission mode currently configured to the terminal, and determines the scheduling information in the first DCI information according to the transmission information of the downlink subframe n, according to the determining.
  • the first DCI information is generated by the DCI format corresponding to the first DCI information and the scheduling information corresponding to the first DCI information.
  • Table 2 can be used to view the DCI format corresponding to the downlink transmission mode currently configured for the terminal.
  • the scheduling information corresponding to the first DCI information includes scheduling information corresponding to the downlink subframe, and scheduling information other than the scheduling information corresponding to the downlink subframe.
  • the scheduling information corresponding to the downlink subframe in the first DCI information includes but is not limited to one or more of the following information: a HARQ process number, new data indication information, and redundancy version information.
  • the scheduling information other than the scheduling information corresponding to the downlink subframe in the first DCI information includes but is not limited to one or more of the following information:
  • Physical resource block location information Physical resource block location information, modulation coding level information, precoding matrix information.
  • the scheduling information corresponding to the downlink subframe in the first DCI information is used only for scheduling the downlink subframe n.
  • the network side device 10 may further send data in the downlink subframe n according to the scheduling information in the first DCI information; and remove the downlink according to the first DCI information.
  • the scheduling information other than the scheduling information corresponding to the frame and the scheduling information corresponding to the downlink subframe in the second DCI information are in N consecutive The data is transmitted on the scheduled downlink subframe in the downlink subframe.
  • the terminal 20 receives the downlink data carried by the physical downlink shared channel (PDSCH) in the scheduled downlink subframe n according to the first DCI information; and according to the downlink subframe, according to the first DCI information And the scheduling information corresponding to the corresponding scheduling information and the scheduling information corresponding to the downlink subframe in the second DCI information, and receiving downlink data on the scheduled downlink subframe in the N consecutive downlink subframes.
  • PDSCH physical downlink shared channel
  • the second DCI information includes: scheduling information corresponding to the scheduled downlink subframes in the N consecutive downlink subframes, where N is a positive integer, ⁇ N p ⁇ . It is the maximum number of downstream HARQ processes.
  • the limit W is not greater than Therefore, it is ensured that the network side device 10 does not schedule multiple transmissions of the same process at one time. After the HARQ retransmission is performed after the transmission error is avoided, the terminal 20 cannot determine which data block corresponding to the same process number is retransmitted by the network side device 10.
  • the network side device 10 can perform scrambling using the C-RNTI when transmitting the first DCI information.
  • the network side device 10 determines the number of bits occupied by the second DCI information, and determines the scheduling corresponding to each downlink subframe that needs to be scheduled in the second DCI information, according to the transmission information of each downlink subframe that is scheduled to be scheduled. And generating second PDI information according to the determined number of bits occupied by the second DCI information and the scheduling information corresponding to the second DCI information.
  • Manner 1 Define a special RNTI (referred to as MS-RNTI) for multi-frame scheduling.
  • MS-RNTI a special RNTI
  • the MS-RNTI is exclusive to the terminal 20, that is, different terminals 20, and the MS-RNTI is also different.
  • the network side device 10 configures scheduling information corresponding to each subframe, such as a HARQ process ID, new data indication information, and redundancy version information, according to the specific situation of multiple downlink subframes to be scheduled, and uses the MS-RNTI.
  • the second DCI information is scrambled.
  • the terminal 20 blindly detects the DCI information scrambled by its corresponding C-RNTI, and knows that it is the first DCI information corresponding to itself; and blindly detects the DCI information scrambled by its corresponding MS-RNTI, it is known It is the second DCI information corresponding to itself.
  • the network side device 10 may use the number of bits occupied by the DCI format 1A as the number of bits occupied by the second DCI information.
  • the network side device 10 may also select one DCI format from the DCI format corresponding to the uplink transmission mode and/or the downlink transmission mode currently configured to the terminal 20, and use the number of bits occupied by the selected DCI format as the bit occupied by the second DCI information. number.
  • the uplink transmission mode and/or the downlink transmission mode There are three cases of the uplink transmission mode and/or the downlink transmission mode: 1. Only the uplink transmission mode; 2. Only the downlink transmission mode; 3. The uplink transmission mode and the downlink transmission mode.
  • the network side device 10 corresponds to the downlink transmission mode currently configured to the terminal 20.
  • Select a DCI format in the DCI format For example, when the terminal 20 is configured as the downlink transmission mode 1, the number of bits occupied by the second DCI information may be equal to the number of bits occupied by the DCI format 1 A or the number of bits occupied by the DCI format 1.
  • the network side device 10 selects one DCI format from the DCI formats corresponding to any available transmission mode currently configured for the terminal 20. For example, when the terminal 20 is configured as the downlink transmission mode 1 and the uplink transmission mode 2, the number of bits occupied by the second DCI information may be equal to the number of bits occupied by the DCI format 1 A, the number of bits occupied by the DCI format 1 or the number of bits occupied by the DCI format 4 .
  • the number of bits occupied by the second DCI information may meet the following requirements in addition to the above requirements:
  • CT 2 is the number of bits occupied by the second DCI information, which is the bit length occupied by the scheduling information corresponding to the downlink subframe
  • c/F is the number of bits occupied by the carrier indicator field (CIF)
  • ⁇ ? / is the number of bits occupied by the ACK ⁇ NACK Resource Indicator (ARI) field.
  • the downlink subframe after the downlink subframe n is scheduled is part or all of the consecutive N subframes.
  • the network side device 10 can send the second DCI information when needed, and the number of the second DCI information corresponding to the same carrier in each subframe is not greater than 1; correspondingly, the terminal 20 is based on the last received second DCI.
  • the information receives the corresponding downlink data.
  • the network side device 10 can also configure whether the terminal 20 performs multi-frame scheduling through high layer signaling.
  • the network side device 10 may set the scheduling information corresponding to the downlink subframe to be in the order of the subframe number.
  • the embodiments of the present invention are not limited to the above-mentioned sequence, and other sequences are also applicable to the embodiments of the present invention, such as from the back to the front; the odd subframes after the odd subframes. However, it is necessary to ensure that the terminal 20 and the network side device 10 are used in the same order.
  • the number of consecutive downlink subframes may be discontinuous.
  • the subframe n is a downlink subframe
  • the subframe n+1 is an uplink subframe
  • the subframe n+2 is a downlink subframe.
  • the subframe n and the subframe n+2 are consecutive downlink subframes, and the corresponding scheduling information may be placed in the second DCI information in the order of the subframe n and the subframe n+2.
  • the scheduling information corresponding to the downlink subframe in the second DCI information includes:
  • HARQ process number new data indication information, and redundancy version information
  • HARQ process number and new data indication information or new data indication information and redundancy version information; or new data indication information.
  • the scheduling information corresponding to the downlink subframe in the second DCI information includes: HARQ process number, codeword 1 new data indication information, codeword 1 redundancy version information, codeword 2 new data indication information, and codeword 2 redundancy version information; or HARQ process number, codeword 1 new data indication information and code Word 2 new data indication information; or codeword 1 new data indication information, codeword 1 redundancy version information, codeword 2 new data indication information, and codeword 2 redundancy version information; or codeword 1 new data indication information and code Word 2 new data indicates information.
  • the network side device 10 determines that the second DCI information further includes a carrier indication field, and the value in the carrier indication field in the second DCI information and the carrier indication field in the first DCI information The values in the same are the same.
  • the network side device 10 can also put the ARI information for indicating the PUCCH resource into the second DCI information.
  • Manner 2 Define a new DCI format for multi-frame scheduling.
  • the network side device 10 configures scheduling information corresponding to each subframe, such as a HARQ process ID, a new data indication information, and a redundancy version information, according to the specific situation of the multiple downlink subframes to be scheduled, and uses the C-RNTI.
  • the second DCI information is scrambled.
  • the terminal 20 blindly detects the DCI information scrambled by its corresponding C-RNTI, and knows which DCI information is according to the DCI format, for example, the DCI format in Table 2, and determines that it is the first DCI information;
  • the DCI format in Table 2 is determined to be the second DCI information.
  • determining the number of bits occupied by the second DCI information when determining the number of bits occupied by the second DCI information, determining the number of bits occupied by the DCI format corresponding to the uplink transmission mode and the downlink transmission mode currently configured for the terminal, and configuring the number of bits occupied by the second DCI information and determining The number of bits is different. That is, the number of bits occupied by the second DCI information is different from the number of bits occupied by the available DCI format currently allocated to the terminal in the transmission mode.
  • the number of bits occupied by the second DCI information may meet the following requirements in addition to the above requirements:
  • the CT 2 is the number of bits occupied by the second DCI information, and is the bit length occupied by the scheduling information corresponding to the downlink subframe.
  • the L AF is the number of bits occupied by the CIF, and is the number of bits occupied by the ARI domain.
  • the downlink subframe after the downlink subframe n is scheduled is part or all of the consecutive N+1 frames.
  • the network side device 10 can send the second DCI information when needed, and the number of the second DCI information corresponding to the same carrier in each subframe is not greater than 1; correspondingly, the terminal 20 is based on the last received second DCI.
  • the information receives the corresponding downlink data.
  • the network side device 10 can configure whether the terminal 20 performs multi-frame scheduling through high-level signaling, that is, whether the terminal 20 needs to detect a new DCI format.
  • the network side device 10 may place the scheduling information corresponding to the downlink subframe in the order of the subframe number.
  • Two DCI information For example, the scheduling information corresponding to the subframe w + 1 , the scheduling information of the subframe w + 2 pair, the scheduling information corresponding to the subframe w + N, may be arranged as follows.
  • the embodiments of the present invention are not limited to the above-mentioned sequence, and other sequences are also applicable to the embodiments of the present invention, such as from the back to the front; the odd subframes after the odd subframes. However, it is necessary to ensure that the terminal 20 and the network side device 10 are used in the same order.
  • the number of consecutive downlink subframes may be discontinuous.
  • the subframe n is a downlink subframe
  • the subframe n+1 is an uplink subframe
  • the subframe n+2 is a downlink subframe.
  • the subframe n and the subframe n+2 are consecutive downlink subframes, and the corresponding scheduling information may be placed in the second DCI information in the order of the subframe n and the subframe n+2.
  • the scheduling information corresponding to the downlink subframe in the second DCI information includes:
  • HARQ process number new data indication information, and redundancy version information
  • HARQ process number and new data indication information or new data indication information and redundancy version information; or new data indication information.
  • the scheduling information corresponding to the downlink subframe in the second DCI information includes:
  • HARQ process number codeword 1 new data indication information, codeword 1 redundancy version information, codeword 2 new data indication information, and codeword 2 redundancy version information; or HARQ process number, codeword 1 new data indication information and code Word 2 new data indication information; or codeword 1 new data indication information, codeword 1 redundancy version information, codeword 2 new data indication information, and codeword 2 redundancy version information; or codeword 1 new data indication information and code Word 2 new data indicates information.
  • the network side device 10 determines that the second DCI information further includes a carrier indication field, and the value in the carrier indication field and the carrier indication in the first DCI information in the second DCI information The values in the domain are the same.
  • the network side device 10 can also put the ARI information for indicating the PUCCH resource into the second DCI information.
  • Manner 3 Add a multi-frame scheduling indication field in the DCI format to indicate whether the DCI information is the first DCI information or the second DCI information.
  • the network side device 10 configures scheduling information corresponding to each subframe, such as a HARQ process ID, a new data indication information, and a redundancy version information, according to the specific situation of the multiple downlink subframes to be scheduled, and uses the C-RNTI.
  • the second DCI information is scrambled.
  • the network side device 10 adds a multi-frame scheduling bit field for distinguishing the DCI information type in the first DCI information and the second DCI information, and then indicates that the DCI information is the first DCI.
  • the number of bits of information is placed in the multi-frame scheduling bit field of the first DCI information, and the number of bits indicating that the DCI information is the second DCI information is placed in the multi-frame scheduling bit field of the second DCI information.
  • the value "1" can be set to indicate the first DCI information, and the value "0" represents the second DCI information, and then 1 is placed in the multi-frame scheduling bit field of the first DCI information.
  • the multiframe scheduling bit field of the second DCI information In the multiframe scheduling bit field of the second DCI information.
  • the terminal 20 blindly detects the DCI information scrambled by its corresponding C-RNTI, and knows which DCI information is based on the value of the multi-frame scheduling indication field in the DCI format, for example, if it is "1", it is determined.
  • the DCI information is the first DCI information, and if it is "0", it is determined that the DCI information is the second DCI information.
  • the network side device 10 may use the number of bits occupied by the DCI format 1A as the number of bits occupied by the second DCI information.
  • the network side device 10 may also select one DCI format from the DCI format corresponding to the uplink transmission mode and/or the downlink transmission mode currently configured to the terminal 20, and use the number of bits occupied by the selected DCI format as the bit occupied by the second DCI information. number.
  • the uplink transmission mode and/or the downlink transmission mode There are three cases of the uplink transmission mode and/or the downlink transmission mode: 1. Only the uplink transmission mode; 2. Only the downlink transmission mode; 3. The uplink transmission mode and the downlink transmission mode.
  • the network side device 10 selects one DCI format from the DCI format corresponding to the uplink transmission mode currently configured for the terminal 20. For example, when the terminal 20 is configured in the downlink transmission mode 1, the number of bits occupied by the second DCI information may be equal to the number of bits occupied by the DCI format 1 A or the number of bits occupied by the DCI format 1 .
  • the network side device 10 selects one DCI format from the DCI formats corresponding to any available transmission mode currently configured for the terminal 20. For example, when the terminal 20 is configured as the downlink transmission mode 1 and the uplink transmission mode 2, the number of bits occupied by the second DCI information may be equal to the number of bits occupied by the DCI format 1 A, the number of bits occupied by the DCI format 1 or the number of bits occupied by the DCI format 4 .
  • the number of bits occupied by the second DCI information may meet the following requirements in addition to the above requirements: L DC12 ⁇ N - L + L CIF + L ARI + L MSI ;
  • CT 2 is the number of bits occupied by the second DCI information, which is the bit length occupied by the scheduling information corresponding to the downlink subframe
  • L aF is the number of bits occupied by ciF
  • L is the number of bits occupied by the ARI domain
  • J MS is The multi-frame scheduling in the second DCI information indicates the number of bits occupied by the domain.
  • the downlink subframe after the downlink subframe n is scheduled is part or all of the consecutive N+1 frames.
  • the network side device 10 can send the second DCI information when needed, and the number of the second DCI information corresponding to the same carrier in each subframe is not greater than 1; correspondingly, the terminal 20 is based on the last received second DCI.
  • the information receives the corresponding downlink data.
  • the network side device 10 can also configure whether the terminal 20 performs multi-frame scheduling through high-level signaling, that is, whether the DCI information of the terminal 20 is notified whether the multi-frame scheduling indication field is included. If multi-frame scheduling is performed, the multi-frame scheduling indication field length is 1 bit (the length of the multi-frame scheduling indication field may be increased as needed), and if multi-frame scheduling is not performed, the multi-frame scheduling indication field length is 0 bits.
  • the network side device 10 may place the scheduling information corresponding to the downlink subframe in the second DCI information according to the sequence of the subframe number. For example, the scheduling information corresponding to the subframe w + 1 , the scheduling information of the subframe w + 2 pair, the scheduling information corresponding to the subframe w + N, may be arranged as follows.
  • the embodiments of the present invention are not limited to the above-mentioned sequence, and other sequences are also applicable to the embodiments of the present invention, such as from the back to the front; the odd subframes after the odd subframes. However, it is necessary to ensure that the terminal 20 and the network side device 10 are used in the same order.
  • the number of consecutive downlink subframes may be discontinuous.
  • the subframe n is a downlink subframe
  • the subframe n+1 is an uplink subframe
  • the subframe n+2 is a downlink subframe.
  • the subframe n and the subframe n+2 are consecutive downlink subframes, and the corresponding scheduling information may be placed in the second DCI information in the order of the subframe n and the subframe n+2.
  • the scheduling information corresponding to the downlink subframe in the second DCI information includes:
  • HARQ process number new data indication information, and redundancy version information
  • HARQ process number and new data indication information or new data indication information and redundancy version information; or new data indication information.
  • the scheduling information corresponding to the downlink subframe in the second DCI information includes:
  • HARQ process number codeword 1 new data indication information, codeword 1 redundancy version information, codeword 2 new data indication information, and codeword 2 redundancy version information; or HARQ process number, codeword 1 new data indication information and code Word 2 new data indication information; or codeword 1 new data indication information, codeword 1 redundancy version information, codeword 2 new data indication information, and codeword 2 redundancy version information; or codeword 1 new data indication information and code Word 2 new data indicates information.
  • the network side device 10 determines that the second DCI information further includes a carrier indication field, and the value in the carrier indication field and the carrier indication in the first DCI information in the second DCI information The values in the domain are the same.
  • the network side device 10 can also put the ARI information for indicating the PUCCH resource into the second DCI information.
  • the network side device 10 if the network side device 10 schedules some of the N consecutive downlink subframes, the network side device 10 also needs to place the scheduling information corresponding to the unscheduled downlink subframes in the second DCI. Information.
  • the network side device 10 may set some special information in the scheduling information corresponding to the unscheduled downlink subframes. Here are two ways.
  • the network side device 10 may set the HARQ process ID of the unscheduled downlink subframe m to be the same as the HARQ process ID of the scheduled downlink subframe of the closest location; where W is a positive integer, 'is a positive integer, and n ⁇ m, ⁇ m ;
  • the terminal 20 determines that the HARQ process ID of the downlink subframe 171 and the HARQ process ID of the downlink subframe m ′ in the second DCI information are the same in the N consecutive downlink subframes in which the second DCI information can be scheduled, and determine the downlink sub-identifier.
  • Frame m There is no downlink data.
  • subframe 1 is a scheduled subframe
  • subframes 2 and 3 are unscheduled subframes
  • the HARQ process numbers of subframes 2 and 3 are set to be the same as the HARQ process number of subframe 1.
  • the terminal 20 After determining that the HARQ process IDs of the subframe 1 and the subframe 2 are the same, the terminal 20 knows that the subframe 2 is not the scheduled subframe; similarly, after determining that the HARQ process numbers of the subframe 1 and the subframe 3 are the same, the subframe is known. 3 is not a scheduled subframe.
  • the network side device 10 sets the HARQ process number corresponding to the unscheduled downlink subframe to an invalid value.
  • the terminal 20 determines the second DCI information in the N consecutive downlink subframes in which the second DCI information can be scheduled.
  • the HARQ process ID of the downlink subframe m is an invalid value, and it is determined that there is no downlink data in the downlink subframe m .
  • the invalid value is specifically which value can be set as needed.
  • the HARQ process number is indicated by 4 bits. Currently, the maximum number of HARQ processes is 15, so the "1111" or "0000" state can be set to an invalid value.
  • the network side device 10 can send a new DL grant in the downlink subframe, where 1 belongs to the sub-frame ⁇ n + ⁇ ⁇ n l ⁇ n DCI2 , and the nDC 12 is the N downlink subframes that the second DCI information can be scheduled.
  • the network side device 10 performs data transmission in the downlink subframe according to the new scheduling information.
  • the first DCI information and the second DCI information are re-determined and sent through the PDCCH in the corresponding downlink subframe.
  • the terminal 20 receives the first DCI information in the scheduled downlink subframe n, and receives the downlink data in the downlink subframe according to the first DCI information;
  • the terminal 20 receives the first DCI information in the scheduled downlink subframe n, receives the second DCI information in the downlink subframe n', receives the downlink data in the downlink subframe n according to the first DCI information, and according to the first And receiving, by the second DCI information, downlink data in the scheduled downlink subframe in the N consecutive downlink subframes;
  • n and n' are positive integers, and the downlink subframe n is the downlink subframe in which the terminal 20 receives the first DCI information before the downlink subframe n'; N is a positive integer, N ⁇ N process , . ⁇ is the number of downstream HARQ maximum processes.
  • n' is always equal to n
  • the terminal 20 receives only the second DCI information in the scheduled downlink subframe n, It is determined that the first DCI information is lost, and no data reception is performed.
  • the network side device in the embodiment of the present invention may be a station (such as a macro base station, a home base station, etc.), an RN (successor) device, or other network side devices.
  • the embodiment of the present invention further provides a network side device, a terminal, a method for scheduling data, and a method for receiving data, because the principle of solving the problem by the device and the method is similar to the system for receiving data,
  • the implementation of these devices and methods can be seen in the implementation of the system, and the details are not repeated here.
  • the network side device in the embodiment of the present invention includes: a determining module 100 and a scheduling module 110.
  • the determining module 100 is configured to determine first DCI information used for scheduling downlink data in the downlink subframe n, and determine at least one second DCI information used to schedule downlink data in at least one downlink subframe after the downlink subframe n, where Each second DCI information separately schedules different downlink subframes, where n is a positive integer;
  • the scheduling module 110 is configured to send the first DCI information to the terminal by using the PDCCH in the downlink subframe n, and send the second DCI information to the terminal by using the PDCCH in the downlink subframe n′;
  • n' is a positive integer, and n' > n; if n' > n, the downlink subframe n is a downlink subframe in which the network side device transmits the first DCI information to the terminal most recently before the downlink subframe n'.
  • the determining module 100 determines the DCI format corresponding to the first DCI information according to the downlink transmission mode of the current configuration, and determines the scheduling information in the first DCI information according to the transmission information of the downlink subframe n;
  • the DCI format corresponding to the first DCI information and the scheduling information corresponding to the first DCI information generate first DCI information.
  • the second DCI information includes: scheduling information corresponding to the scheduled downlink subframes in the N consecutive downlink subframes, where N is a positive integer, ⁇ N P ⁇ ⁇ . It is the maximum number of downstream HARQ processes.
  • the determining module 100 places the scheduling information corresponding to the N downlink subframes into the second DCI information according to the sequence of the downlink subframe number.
  • the determining module 100 determines the number of bits occupied by the second DCI information, and determines the scheduling information corresponding to each downlink subframe that needs to be scheduled in the second DCI information, according to the transmission information of each downlink subframe that is scheduled to be scheduled. And generating second DCI information according to the determined number of bits occupied by the second DCI information and the scheduling information corresponding to the second DCI information.
  • the determining module 100 uses the number of bits occupied by the DCI format 1A as the number of bits occupied by the second DCI information; or selects a DCI format from the DCI format corresponding to the uplink transmission mode and/or the downlink transmission mode currently configured for the terminal. And the number of bits occupied by the selected DCI format is taken as the number of bits occupied by the second DCI information.
  • the scheduling module 110 scrambles the second DCI information with a special RNTI.
  • the number of bits occupied by the second DCI information determined by the determining module 100 is different from the number of bits occupied by the DCI format currently allocated to the uplink transmission mode and the downlink transmission mode of the terminal.
  • the number of bits occupied by the second DCI information determined by the module 100 is determined.
  • the CT 2 is the number of bits occupied by the second DCI information, and is the bit length occupied by the scheduling information corresponding to the downlink subframe, which is the number of bits occupied by the CIF, and is the number of bits occupied by the ARI domain.
  • the determining module 100 adds a multi-frame scheduling bit field for distinguishing DCI information types in the first DCI information and the second DCI information when determining that multi-frame scheduling is required; indicating that the DCI information is the first DCI information Ratio
  • the special number is placed in the multi-frame scheduling bit field of the first DCI information, and the number of bits indicating that the DCI information is the second DCI information is placed in the multi-frame scheduling bit field of the second DCI information.
  • the number of bits occupied by the second DCI information determined by the module 100 is determined.
  • DCT2 is the number of bits occupied by the second DCI information, which is the bit length occupied by the scheduling information corresponding to the downlink subframe
  • L AF is the number of bits occupied by ciF
  • L is the number of bits occupied by the ARI domain
  • J MS is the second.
  • the multiframe scheduling in the DCI information indicates the number of bits occupied by the domain.
  • the scheduling module 110 notifies the terminal to perform multi-frame scheduling before transmitting the first DCI information and the second DCI information.
  • the scheduling module 110 uses the C-RNTI to scramble the second DCI information.
  • the determining module 100 sets the HARQ process ID of the unscheduled downlink subframe m to the HARQ process of the scheduled downlink subframe m ' that is closest to the location.
  • the same number where, is a positive integer; 'is a positive integer, and " ⁇ ' ⁇ ;
  • the determining module 100 sets the HARQ process number corresponding to the unscheduled downlink subframe to an invalid value.
  • the scheduling module 110 sends data in the downlink subframe n according to the scheduling information in the first DCI information; according to the first DCI information, the downlink subframe corresponds to The scheduling information other than the scheduling information and the scheduling information corresponding to the downlink subframe in the second DCI information are used to transmit data in the downlink subframe scheduled in the N consecutive downlink subframes.
  • the scheduling module 110 sends the first DCI information and the second DCI information, if it needs to send new scheduling information in the scheduled downlink subframe, the first DCI information and the second DCI information are re-determined, and the corresponding The PDCCH is transmitted in the downlink subframe.
  • the terminal in the embodiment of the present invention includes: a first receiving module 200 and a second receiving module 210.
  • the first receiving module 200 is configured to receive downlink data in the downlink subframe n according to the first DCI information received in the downlink subframe n, where n is a positive integer;
  • the second receiving module 210 is configured to receive downlink data of the scheduled downlink subframes in the N downlink subframes according to the second DCI information received in the downlink subframe n′;
  • n' is a positive integer, and n, >n; if n'> n, the downlink subframe n is the downlink sub-interface of the terminal that received the first DCI information before the downlink subframe n'; N is a positive integer , ⁇ N P A ⁇ . c ⁇ is the maximum number of downstream HARQ processes.
  • the first receiving module 200 receives the first DCI information in the scheduled downlink subframe n, and receives the downlink data in the downlink subframe n according to the first DCI information.
  • the second receiving module 210 receives the first DCI information in the scheduled downlink subframe n and receives the second DCI information in the downlink subframe n′, and receives the downlink data in the downlink subframe n according to the first DCI information. And receiving downlink data on the scheduled downlink subframes in the N consecutive downlink subframes according to the second DCI information.
  • the second receiving module 210 is After receiving the second DCI information, it is determined that the first DCI information is lost, and no data is received.
  • the second receiving module 210 receives N consecutive downlinks according to the scheduling information of the first DCI information except the scheduling information corresponding to the downlink subframe, and the scheduling information corresponding to the downlink subframe in the second DCI information. Downlink data on the scheduled downlink subframe in the subframe.
  • the second receiving module 210 determines that the HARQ process ID of the downlink subframe m and the HARQ process ID of the downlink subframe m′ in the second DCI information are the same in the N consecutive downlink subframes in which the second DCI information can be scheduled.
  • N is a positive integer
  • W is a positive integer
  • the method for scheduling data in the embodiment of the present invention includes the following steps:
  • Step 401 The network side determines first DCI information used for scheduling downlink data in the downlink subframe n, and determines at least one second DCI information used to schedule downlink data in at least one downlink subframe after the downlink subframe n, where each The second DCI information respectively schedules different downlink subframes, where n is a positive integer;
  • Step 402 The network side sends the first DCI information to the terminal by using the PDCCH in the downlink subframe n, and sends the second DCI information to the terminal by using the PDCCH in the downlink subframe n'.
  • n' is a positive integer, and n, > n; if n, > n, the downlink subframe n is a downlink subframe in which the network side transmits the first DCI information to the terminal most recently before the downlink subframe n'.
  • the network side is configured to perform the downlink transmission mode currently configured for the terminal, determine the DCI format corresponding to the first DCI information, and determine the scheduling information in the first DCI information according to the transmission information of the downlink subframe n.
  • the network side generates the first DCI information according to the determined DCI format corresponding to the first DCI information and the scheduling information corresponding to the first DCI information.
  • the second DCI information includes: scheduling information corresponding to the scheduled downlink subframes in the N consecutive downlink subframes, where N is a positive integer, ⁇ N p ⁇ ⁇ . It is the maximum number of downstream HARQ processes.
  • the first DCI information uses a DCI format corresponding to the transmission of the single codeword
  • the scheduling information corresponding to the downlink subframe in the second DCI information includes: HARQ process number, new data indication information, and redundancy version information; or HARQ process number and new data indication information; or new data indication information and redundancy version information; or new data indication information;
  • the first DCI information uses a DCI format corresponding to the scheduling of the multi-codeword transmission, and the scheduling information corresponding to the downlink subframe in the second DCI information includes:
  • HARQ process number codeword 1 new data indication information, codeword 1 redundancy version information, codeword 2 new data indication information, and codeword 2 redundancy version information; or HARQ process number, codeword 1 new data indication information and code Word 2 new data indication information; or codeword 1 new data indication information, codeword 1 redundancy version information, codeword 2 new data indication information, and codeword 2 redundancy version information; or codeword 1 new data indication information and code Word 2 new data indicates information.
  • the second DCI information includes a carrier indication field, where the value of the carrier indication field in the second DCI information is the same as the carrier indication field in the first DCI information.
  • the second DCI information further includes a feedback resource indicating ARI information for indicating the PUCCH resource.
  • the network side places the scheduling information corresponding to the N downlink subframes into the second DCI information according to the sequence of the downlink subframe number.
  • step 401 the network side determines the number of bits occupied by the second DCI information, and determines the scheduling information corresponding to each downlink subframe that needs to be scheduled in the second DCI information, according to the transmission information of each downlink subframe that is scheduled to be scheduled;
  • the network side generates second DCI information according to the determined number of bits occupied by the second DCI information and the scheduling information corresponding to the second DCI information.
  • Manner 1 Define a special RNTI (referred to as MS-RNTI) for multi-frame scheduling.
  • MS-RNTI a special RNTI
  • the MS-RNTI is exclusive to the terminal 20, that is, different terminals 20, and the MS-RNTI is also different.
  • the network side uses the number of bits occupied by the DCI format 1A as the number of bits occupied by the second DCI information; or selects a DCI from the DCI format corresponding to the uplink transmission mode and/or the downlink transmission mode currently configured for the terminal.
  • the format, and the number of bits occupied by the selected DCI format is taken as the number of bits occupied by the second DCI information.
  • the network side uses the MS-RNTI to scramble the second DCI information.
  • the number of bits occupied by the second DCI information may meet the following requirements in addition to the above requirements:
  • the CT 2 is the number of bits occupied by the second DCI information, and is the bit length occupied by the scheduling information corresponding to the downlink subframe, and the c/F is the number of bits occupied by the CIF (Carrier Indicator Field), which is ARI. (ACK ⁇ NACK Resource Indicator) The number of bits occupied by the domain.
  • CIF Carrier Indicator Field
  • Manner 2 Define a new DCI format for multi-frame scheduling.
  • the number of bits occupied by the second DCI information determined by the network side in step 401 is currently configured to the terminal.
  • the DCI format corresponding to the uplink transmission mode and the downlink transmission mode occupy different numbers of bits.
  • the number of bits occupied by the second DCI information may meet the following requirements in addition to the above requirements:
  • the CT 2 is the number of bits occupied by the second DCI information, and is the bit length occupied by the scheduling information corresponding to the downlink subframe, which is the number of bits occupied by the CIF, and is the number of bits occupied by the ARI domain.
  • Manner 3 Add a multi-frame scheduling indication field in the DCI format to indicate whether the DCI information is the first DCI information or the second DCI information.
  • step 401 when the network side determines that multi-frame scheduling is required, a multi-frame scheduling bit field for distinguishing DCI information types is added to the first DCI information and the second DCI information;
  • the network side indicates that the DCI information is that the number of bits of the first DCI information is placed in the multi-frame scheduling bit field of the first DCI information, and that the number of bits indicating that the DCI information is the second DCI information is placed in the multi-frame of the second DCI information. Scheduling in the bit field.
  • the number of bits occupied by the second DCI information may meet the following requirements in addition to the above requirements:
  • DCT2 is the number of bits occupied by the second DCI information, which is the bit length occupied by the scheduling information corresponding to the downlink subframe
  • L AF is the number of bits occupied by ciF
  • L is the number of bits occupied by the ARI domain
  • J MS is the second.
  • the multiframe scheduling in the DCI information indicates the number of bits occupied by the domain.
  • the terminal is notified to perform multi-frame scheduling.
  • step 402 the network side uses the cell C-RNTI to scramble the second DCI information.
  • the HARQ process ID of the unscheduled downlink subframe m is set to the scheduled downlink subframe m' closest to the location.
  • the HARQ process number is the same; where W is a positive integer; 'is a positive integer, and? ? ⁇ ' ⁇ ; Or, if the network side schedules some subframes in the N consecutive downlink subframes, the HARQ process number corresponding to the unscheduled downlink subframe is set to an invalid value.
  • the data is sent in the downlink subframe n according to the scheduling information in the first DCI information, and the downlink subframe is removed according to the first DCI information.
  • the scheduling information other than the corresponding scheduling information and the scheduling information corresponding to the downlink subframe in the second DCI information are used to transmit data in the downlink subframe scheduled in the N consecutive downlink subframes.
  • the method further includes:
  • the first DCI information and the second DCI information are re-determined and sent through the PDCCH in the corresponding downlink subframe.
  • the method for receiving data in the embodiment of the present invention includes the following steps: Step 501: The terminal receives downlink data in the downlink subframe n according to the first DCI information received in the downlink subframe n, where n is a positive integer.
  • Step 502 The terminal receives, according to the second DCI information received in the downlink subframe n', downlink data of the scheduled downlink subframe in the N downlink subframes, where n' is a positive integer, and n, > n; n' > n, the downlink subframe n is a downlink subframe in which the terminal receives the first DCI information before the downlink subframe n'; N is a positive integer, and
  • ⁇ process is the maximum number of downstream HARQ processes.
  • N consecutive downlink subframes are N consecutive downlink subframes after the downlink subframe n; if n, >n, N consecutive downlink subframes are downlink subframes n' and downlink N-1 consecutive downlink subframes after subframe n'.
  • the method further includes:
  • the terminal receives the first DCI information in the scheduled downlink subframe n, and receives the downlink data in the downlink subframe n according to the first DCI information;
  • the terminal receives the first DCI information in the scheduled downlink subframe n and receives the second DCI information in the downlink subframe n′, and receives the downlink data in the downlink subframe n according to the first DCI information, according to the second DCI.
  • the information receives downlink data on the scheduled downlink subframes in the N consecutive downlink subframes.
  • the terminal Preferably, if the first DCI information and the second DCI information are pre-agreed in the same subframe, the terminal only receives the second DCI information in the scheduled downlink subframe n, determining that the first DCI information is lost, and no data is performed. receive.
  • the terminal receives N consecutive downlinks according to the scheduling information except the scheduling information corresponding to the downlink subframe in the first DCI information, and the scheduling information corresponding to the downlink subframe in the second DCI information. Downlink data on the scheduled downlink subframe in the subframe.
  • the method further includes:
  • N consecutive second downlink sub-frames can be scheduled in the DCI information, if the same subframe information DCI second downlink HARQ process and the number of downlink subframes m m 'HARQ process number, determining a downlink sub-frame m No Downstream data; where N is a positive integer, m is a positive integer; 'is a positive integer, and " ⁇ W ' ⁇ W; or the terminal is in the N consecutive downlink subframes in which the second DCI information can be scheduled, if the second DCI information is downlinked
  • the HARQ process ID of the subframe m is an invalid value, and it is determined that there is no downlink data in the downlink subframe.
  • step 401 and step 402 are performed first, and then step 501 and step 502 are performed.
  • embodiments of the present invention can be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment, or a combination of software and hardware. Moreover, the present invention is in the form of a computer program product embodied on one or more computer-usable storage interfaces (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer usable program code.
  • the present invention has been described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (system), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flowchart illustrations and/or FIG.
  • These computer program instructions can be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing device to produce a machine for the execution of instructions for execution by a processor of a computer or other programmable data processing device.
  • the computer program instructions can also be stored in a computer readable memory that can direct a computer or other programmable data processing device to operate in a particular manner, such that the instructions stored in the computer readable memory produce an article of manufacture comprising the instruction device.
  • the apparatus implements the functions specified in one or more blocks of a flow or a flow and/or block diagram of the flowchart.
  • These computer program instructions can also be loaded onto a computer or other programmable data processing device such that a series of operational steps are performed on a computer or other programmable device to produce computer-implemented processing for execution on a computer or other programmable device.
  • the instructions provide steps for implementing the functions specified in one or more of the flow or in a block or blocks of a flow diagram.
  • the system can continuously meet the requirement of increasing scheduling signaling and improve the efficiency of downlink control signaling. And system performance.

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Abstract

La présente invention appartient au domaine technique de la communication sans fil. Dans son mode de réalisation, l'invention se rapporte à un procédé, à un système et à un dispositif adaptés pour programmer et recevoir des données. Grâce au procédé, au système et au dispositif décrits dans la présente invention, il est possible de satisfaire l'exigence sans cesse croissante de programmation de signal, à la condition d'augmenter en permanence la capacité d'un système. Le procédé décrit dans le mode de réalisation de l'invention comprend les étapes suivantes, consistant : à confirmer un premier message de DCI pour la programmation de données sur la liaison descendante dans une sous-trame sur la liaison descendante n ; à confirmer au moins un second message de DCI pour la programmation de données sur la liaison descendante dans au moins une sous-trame sur la liaison descendante, après la sous-trame sur la liaison descendante n, sur le côté réseau, chacun des seconds messages de DCI étant utilisé pour programmer différentes sous-trames sur la liaison descendante ; à envoyer le premier message de DCI à un terminal via un PDCCH dans la sous-trame sur la liaison descendante n ; et à envoyer le second message de DCI au terminal via un PDCCH dans la sous-trame sur la liaison descendante n'. En utilisant une sous-trame sur la liaison descendante pour programmer les données d'une pluralité de sous-trames consécutives, il est possible de satisfaire l'exigence sans cesse croissante de programmation de signal, à la condition d'augmenter en permanence la capacité d'un système.
PCT/CN2012/073142 2011-04-02 2012-03-27 Procédé, système et dispositif pour la programmation et la réception de données WO2012136109A1 (fr)

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