WO2018152789A1 - Procédé de communication sans fil, dispositif terminal et dispositif de réseau - Google Patents

Procédé de communication sans fil, dispositif terminal et dispositif de réseau Download PDF

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Publication number
WO2018152789A1
WO2018152789A1 PCT/CN2017/074831 CN2017074831W WO2018152789A1 WO 2018152789 A1 WO2018152789 A1 WO 2018152789A1 CN 2017074831 W CN2017074831 W CN 2017074831W WO 2018152789 A1 WO2018152789 A1 WO 2018152789A1
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WIPO (PCT)
Prior art keywords
block
downlink control
control signaling
transmission
scheduled
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PCT/CN2017/074831
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English (en)
Chinese (zh)
Inventor
林亚男
***
Original Assignee
广东欧珀移动通信有限公司
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Filing date
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Application filed by 广东欧珀移动通信有限公司 filed Critical 广东欧珀移动通信有限公司
Priority to PCT/CN2017/074831 priority Critical patent/WO2018152789A1/fr
Priority to CN201780050018.4A priority patent/CN109565866B/zh
Publication of WO2018152789A1 publication Critical patent/WO2018152789A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/12—Wireless traffic scheduling

Definitions

  • the present application relates to the field of communications, and more particularly, to a wireless communication method, a terminal device, and a network device.
  • the terminal device and the network device encode in the transmission block unit and transmit to the receiving end. If the receiving end does not successfully decode the transport block, it will send a Neg-Acknowledge (NACK) message to the transmitting end, and the transmitting end will retransmit the transport block.
  • NACK Neg-Acknowledge
  • the embodiments of the present application provide a wireless communication method, a terminal device, and a network device, which can save resources and are compatible with more terminal devices.
  • a wireless communication method including:
  • the terminal device Determining, according to the first information domain, the terminal device whether the target transport block scheduled by the downlink control signaling is a primary transmission or a repeated transmission; when the target transmission block scheduled by the downlink control signaling is initially transmitted, the terminal Determining, by the device, a modulation and coding level according to the second information field, and using, by the terminal device, the transmission of the target transmission block with the network device;
  • the terminal device determines, according to the second information domain, a coding block or a coding block group to be retransmitted in the target transmission block, and a The transmission of the coding block or the coding block group is performed between the terminal device and the network device.
  • the second information field includes N bits, when the target transmission block scheduled by the downlink control signaling is repeatedly transmitted, the N M bits of the bits are used to indicate the coded block or the coded block group to be retransmitted, where The N is a positive integer, and the M is a positive integer not greater than N;
  • Determining, by the terminal device, the coded block or the coded block group to be retransmitted in the target transport block according to the second information field including: determining, by the terminal device, the to-be-retransmitted according to the M bits Encoded block or coded block group.
  • the M is less than N;
  • the method further includes: when the target transmission block scheduled by the downlink control signaling is repeatedly transmitted.
  • Transmitting the coding block or the coding block group between the terminal device and the network device including: the terminal device performing the coding block or the coding block with the network device by using the modulation mode Group of transmissions.
  • the target transmission block includes M coding blocks or coding block groups, where the downlink control signaling is performed.
  • the M bits indicate, by means of bit mapping, whether each of the M coded blocks or the coded block group is retransmitted.
  • the M The bit indicates one of the 2 M coding block sets, and the coding block or the coding block group to be retransmitted is a coding block or a coding block group included in the one coding block set.
  • the second All fields in the information field are used to indicate the modulation coding level.
  • the first information field is used to indicate the target transport block scheduled by the downlink control signaling Current number of transmissions
  • the terminal device determines whether the target transport block scheduled by the downlink control signaling is a primary transmission or a repeated transmission, and includes:
  • the target transmission block scheduled by the downlink control signaling determines, according to the current number of transmissions indicated by the first information field, the target transmission block scheduled by the downlink control signaling to be a primary transmission or a repeated transmission.
  • the first information field has a value of 0 or 1; wherein 0 is used to indicate the The target transport block is an initial transmission, and 1 is used to indicate that the target transport block is a repeated transmission; or, 1 is used to indicate that the target transport block is an initial transmission, and 0 is used to indicate that the target transport block is a repeated transmission;
  • the terminal device determines whether the target transport block scheduled by the downlink control signaling is a primary transmission or a repeated transmission, and includes:
  • the target transmission block scheduled by the downlink control signaling determines, according to the value of the first information field, the target transmission block scheduled by the downlink control signaling to be a primary transmission or a repeated transmission.
  • the first information field includes a first field and a second field
  • the first field is used to indicate whether the target transport block scheduled by the downlink control signaling is new data compared with the last scheduled data in the time domain, and the second field is used to indicate The number of times the data is currently transmitted by the downlink control signaling is modulo the result of n, where n is a positive integer;
  • the terminal device determines whether the target transport block is a primary transmission or a repeated transmission, including:
  • the terminal device determines, according to the first field and the second field, whether the target transport block scheduled by the downlink control signaling is a primary transmission or a repeated transmission.
  • the n 2.
  • the downlink control signaling includes a third information domain, where the downlink control signaling is scheduled.
  • the method further includes:
  • Transmitting the coding block or the coding block group between the terminal device and the network device including:
  • the transmission of the coding block or the coding block group is performed between the terminal device and the network device.
  • the target transmission block that is scheduled by the downlink control signaling is a repetitive transmission
  • the The target transmission block of the line control signaling scheduling is downlink data
  • the method further includes:
  • a wireless communication method including:
  • the network device generates downlink control signaling
  • the downlink control signaling includes a first information domain and a second information domain, where the first information domain is used to indicate whether the target transport block scheduled by the downlink control signaling is a primary transmission or a repeated transmission;
  • the second information field is used to indicate a modulation and coding level, where the modulation and coding level is used between the terminal device and the network device. Transmission of the target transport block;
  • the second information field is used to indicate a coding block or a coding block group to be retransmitted in the target transport block
  • the network device sends the downlink control signaling to the terminal device.
  • the second information field includes N bits, when the target transport block scheduled by the downlink control signaling is a repetitive transmission,
  • the M bits of the N bits are used to indicate the coded block or the coded block group to be retransmitted, wherein the N is a positive integer, and the M is a positive integer not greater than N.
  • the M is less than N, and the target transport block scheduled in the downlink control signaling is repeated transmission And other bits of the N bits included in the second information field except the M bits, indicating a modulation mode of the coding block or the coding block group to be retransmitted.
  • the target transmission block includes M coding blocks or coding block groups, where the downlink control information is
  • the M bits indicate, by means of bit mapping, whether each of the M coding blocks or the coding block group needs to be retransmitted.
  • the M The bit indicates one of the 2 M coding block sets, and the coded block or coded block group to be retransmitted includes a coding block or a coding block group included in the one coding block set.
  • the second All fields in the information field are used to indicate the first modulation coding level.
  • the first information field is used to indicate the target transmission of the downlink control signaling scheduling The current number of transfers of the block.
  • the first information field has a value of 0 or 1;
  • the target transport block is the initial transmission, 1 is used to indicate that the target transport block is a repetitive transmission; or 1 is used to indicate that the target transport block is the initial transmission, and 0 is used to indicate that the target transport block is a repetitive transmission.
  • the first information field includes a first field and a second field
  • the first field is used to indicate whether the data scheduled by the downlink control signaling is new data compared with the last scheduled data in the time domain
  • the second field is used to indicate the downlink control.
  • the number of times the data of the signaling schedule is currently transmitted is modulo the result of n.
  • the n 2.
  • the downlink control signaling includes a third information domain, where the downlink control signaling is scheduled.
  • the third information field is used to indicate a resource location and/or size when the coding block or the coding block group is transmitted.
  • the downlink control signaling scheduled data is downlink data
  • the target transport block is repeated transmission
  • the method further includes:
  • a terminal device which can include means for implementing the method of the first aspect described above or any of its possible implementations.
  • a network device which may comprise means for implementing the method of the second aspect or any of its possible implementations.
  • a terminal device in a fifth aspect, can include a memory and a processor, the memory storing instructions for invoking instructions stored in the memory to perform the first aspect or any optional implementation thereof Methods.
  • a network device in a sixth aspect, can include a memory and a processor, the memory storing instructions for invoking instructions stored in the memory to perform the second aspect or any optional implementation thereof Methods.
  • a computer readable medium storing program code for execution by a terminal device, the program code comprising instructions for performing the method of the first aspect or various implementations thereof Or include instructions for performing the method of the second aspect or its various implementations.
  • a system chip comprising an input interface, an output interface, a processor, and a memory
  • the processor is configured to execute code in the memory, and when the code is executed, the processor can implement the foregoing The method of the first aspect and various implementations, or the method of the second aspect and various implementations described above.
  • the downlink control signaling includes a first information domain and a second information domain
  • the terminal device may determine, from the first information domain, whether the currently scheduled transport block is the first transmission or the repeated transmission;
  • the terminal device may determine, from the second information domain, a modulation coding level for transmitting the transport block; and when the currently scheduled transport block is a repeated transmission, the terminal device is from the second information domain.
  • Determining the coded block or the coded block group to be retransmitted in the transport block, and retransmitting the coded block or the coded block group may be performed in units of coded blocks or coded block groups during retransmission, and may avoid heavy
  • the information generated by the transport block is wasteful, and the information field indicating the modulation and coding level of the transport block is the same as the information field indicating the coded block or the coded block group to be retransmitted, and the original information domain bearer can be borrowed. More information, avoiding excessive signaling changes, compatibility with more terminal devices, and no need to add new information fields in the downlink control signaling. Resources.
  • FIG. 1 is a schematic diagram of a wireless communication system in accordance with an embodiment of the present application.
  • FIG. 2 is a schematic flowchart of a wireless communication method according to an embodiment of the present application.
  • FIG. 3 is a schematic flowchart of a wireless communication method according to an embodiment of the present application.
  • FIG. 4 is a schematic block diagram of a terminal device according to an embodiment of the present application.
  • FIG. 5 is a schematic block diagram of a network device according to an embodiment of the present application.
  • FIG. 6 is a schematic block diagram of a communication device in accordance with an embodiment of the present application.
  • FIG. 7 is a schematic block diagram of a system chip in accordance with an embodiment of the present application.
  • GSM Global System of Mobile communication
  • CDMA Code Division Multiple Access
  • WCDMA Wideband Code Division Multiple Access
  • GPRS General Packet Radio Service
  • LTE Long Term Evolution
  • FDD Frequency Division Duplex
  • TDD Time Division Duplex
  • UPD Universal Mobile Telecommunication System
  • WiMAX Worldwide Interoperability for Microwave Access
  • FIG. 1 shows a wireless communication system 100 to which an embodiment of the present application is applied.
  • the wireless communication system 100 can include a network device 110.
  • Network device 100 can be a device that communicates with a terminal device.
  • Network device 100 may provide communication coverage for a particular geographic area and may communicate with terminal devices (e.g., UEs) located within the coverage area.
  • terminal devices e.g., UEs
  • the network device 100 can be GSM a base station (Base Transceiver Station, BTS) in a system or a CDMA system, or a base station (NodeB, NB) in a WCDMA system, or an evolved base station (Evolutional Node B, eNB or eNodeB) in an LTE system, or Is a wireless controller in a Cloud Radio Access Network (CRAN), or the network device can be a relay station, an access point, an in-vehicle device, a wearable device, a network-side device in a future 5G network, or a future evolution.
  • PLMN Public Land Mobile Network
  • the wireless communication system 100 also includes at least one terminal device 120 located within the coverage of the network device 110.
  • Terminal device 120 can be mobile or fixed.
  • the terminal device 120 may refer to an access terminal, a user equipment (User Equipment, UE), a subscriber unit, a subscriber station, a mobile station, a mobile station, a remote station, a remote terminal, a mobile device, a user terminal, a terminal, and a wireless communication.
  • the access terminal may be a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, a Personal Digital Assistant (PDA), with wireless communication.
  • the 5G system or network may also be referred to as a New Radio (NR) system or network.
  • NR New Radio
  • FIG. 1 exemplarily shows one network device and two terminal devices.
  • the wireless communication system 100 may include a plurality of network devices and may include other numbers of terminal devices within the coverage of each network device. The application embodiment does not limit this.
  • the wireless communication system 100 may further include other network entities, such as a network controller, a mobility management entity, and the like.
  • network entities such as a network controller, a mobility management entity, and the like.
  • system and “network” are used interchangeably herein.
  • the term “and/or” in this context is merely an association describing the associated object, indicating that there may be three relationships, for example, A and / or B, which may indicate that A exists separately, and both A and B exist, respectively. B these three situations.
  • the character "/" in this article generally indicates that the contextual object is an "or" relationship.
  • FIG. 2 is a schematic flowchart of a wireless communication method 200 according to an embodiment of the present application. As shown in FIG. 2, the method 200 includes the following.
  • the terminal device receives downlink control signaling sent by the network device, where the downlink control signaling includes a first information domain and a second information domain.
  • the terminal device determines whether the target transport block scheduled by the downlink control signaling is a primary transmission or a repeated transmission.
  • the first information field is used to indicate a current number of transmissions of the target transport block scheduled by the downlink control signaling; and the terminal device determines the downlink control according to the current number of transmissions indicated by the first information field. Whether the current transmission of the target transport block of the signaling schedule is a primary transmission or a repeated transmission.
  • the information field indicates that the transmission of the currently scheduled target transport block is the first time, indicating that the currently scheduled target transport block is the initial transmission, and the information field indicates that the transmission of the currently scheduled target transport block is greater than one, Indicates that the currently scheduled target transport block is a duplicate transmission.
  • the number of transmissions is a pointer to a portion of the data for a particular piece of data, plus the current transmission, and the previous transmission, a total number of times.
  • the value of the first information field is 0 or 1; where 0 is used to indicate that the target transport block is the initial transmission, and 1 is used to indicate that the target transport block is a repeated transmission; or Instructing the target transport block to be the initial transmission, and 0 for the target transport block to be the repeated transmission; according to the value of the first information field, the terminal device determines whether the target transport block scheduled by the downlink control signaling is the initial transmission or the repetition transmission.
  • the first information domain may be a 1-bit information domain.
  • the first information field includes a first field and a second field, where the first field is used to indicate data scheduled by the downlink control signaling and last scheduled data adjacent to the time domain.
  • the second field is used to indicate the result of the current transmission of the data scheduled by the downlink control signaling to the modulo of n; the terminal device combines the first field and the second field to determine the The downlink control signaling schedules whether the target transport block is the first transmission or the repeated transmission.
  • n 2.
  • the first field may indicate that the data in the field is new data compared to the last scheduled data, and if not, the data is not compared to the last scheduled data.
  • New data means changing from 1 to 0, or from 0 to 1.
  • the value of the first field can be changed from 0 to 1, and the data transmitted by slot n+2 is compared to slot n+1. If it is not new, the value of the first field remains unchanged at 1, and the data transmitted by slot n+3 compared to slot n+2 is new, then the first field The value changes from 0 to 1.
  • the terminal device considers that the data of the slot n+2 is new data, that is, the transmission is the initial transmission, indicating that the modulation coding level needs to be obtained from the second information domain.
  • the data transmission that is actually the time slot n+2 is not the initial transmission, but is repeated transmission, and the coded block to be retransmitted needs to be acquired from the second information domain.
  • the first information field of the embodiment of the present application includes a second field, where the second field is used to indicate that the number of current transmissions of the data scheduled by the downlink control signaling is modulo the result of n.
  • n can be greater than or equal to 2.
  • the Xth transmission block A in slot n has a value of 0 in the first field, and the first transmission slot B in the slot n+1, the first field is flipped to 1
  • the second field is modulo 1 to 2
  • the time slot n+2 transmits at least part of the coding block in the transport block B for the second time, the first field does not change to 1, and the second field is 0 after modulo 2 If the downlink control signaling in the slot n+1 is lost, the terminal device combines the second field of the slot n+2 (the first bit of the first information field), and the value of the second field is 0, not It is transmitted for the first time, so it can be judged as repeated transmission.
  • the terminal device determines a modulation and coding level from the second information domain, and the terminal device uses the modulation and coding level, and the network device The transfer of the target transport block is performed between.
  • the downlink control signaling may further include a fourth information domain, where the information domain may include information, such as the number and location of PRBs for transmitting the current transport block, so that the terminal device can be combined with the first
  • the information in the two information fields and the information in the fourth information domain determine the bit size of the currently transmitted transport block.
  • the second information field may be referred to as a modulation coding scheme (Modulation and Coding) Scheme, MCS) Information field.
  • MCS Modulation and Coding
  • all the fields in the second information field are used to indicate the modulation and coding level.
  • the terminal device determines, from the second information domain, a coding block or a coding block group to be retransmitted in the target transport block, and the terminal The transmission of the coded block or the coded block group is performed between the device and the network device.
  • the transport block may include multiple coding blocks, may be in units of coding blocks when retransmitting, or may be divided into multiple coding block groups, and may be in units of coding block groups during retransmission.
  • the coding block group may include at least one coding block, and the number of coding blocks included in different coding block groups in the same transmission block may be the same or different.
  • the second information field includes N bits, and when the target transport block scheduled by the downlink control signaling is a repeated transmission, the M bits of the N bits are used to indicate the coded block to be retransmitted or The coded block group, wherein the N is a positive integer, and the M is a positive integer not greater than N; the terminal device determines, from the M bits, the coded block or the coded block group to be retransmitted.
  • the M is less than N; the M bits may be the first M bits or the last M bits of the N bits.
  • the terminal device determines, according to the other bits except the M bits, the N bits included in the second information field, the terminal device determines a modulation mode of the coded block or the coded block group to be retransmitted; the terminal device Using the modulation scheme, transmission of the coded block or coded block group is performed with the network device.
  • the modulation mode indicated by the second information field may be a direct indication manner.
  • the NM bit is assumed to be 2 bits, and when the value of the 2 bits is 00, the modulation mode is a quadrature phase.
  • Quadrature Phase Shift Keying (QPSK) when the 2-bit value is 01, the modulation method is 16 Quadrature Amplitude Modulation (QAM).
  • QPSK Quadrature Phase Shift Keying
  • the modulation method is 16 Quadrature Amplitude Modulation
  • the modulation method is 64QAM.
  • the modulation method is 256QAM.
  • the modulation mode indicated by the second information field is an indirect indication manner.
  • the modulation mode is increased relative to the initial transmission.
  • Level 1 is the same as the modulation method of the initial transmission when the value of the 2 bits is 01.
  • the modulation method is reduced by 1 level, and when the value of the 2 bits is 11, the modulation method is 2 levels lower than the initial transmission.
  • the following describes how to determine the code block to be retransmitted when the target transport block is a duplicate transmission.
  • the target transport block includes M coding blocks or a coding block group, where the M bits indicate, by means of bit mapping, whether each of the M coding blocks or the coding block group is a coding block or a coding block group. Need to retransmit.
  • the transport block has 3 coded blocks or coded block groups
  • 110 indicates that the first and second coding blocks or coding block groups need to be retransmitted, and the third coding block or coding block group needs to be retransmitted.
  • the M bits indicate one of the 2 M coding block sets
  • the coded block or the coded block group to be retransmitted includes the coded block included in the one coded block set or Encode block group.
  • Fourth coding block or coding block group 100 First or second coding block or coding block group 101 Second or third coding block or coding block group 110 Third or fourth coding block or coding block group 111 All coded blocks or coded block groups
  • the downlink control signaling includes a third information domain, where the target transport block scheduled by the downlink control signaling is a repetitive transmission, and the terminal device determines, from the third information domain, that the to-be-retransmitted is to be transmitted.
  • bit size of the coding block may be the same as the initial transmission time.
  • the data that is scheduled by the downlink control signaling is downlink data
  • the terminal device before the terminal device receives the downlink control signaling sent by the network device, the terminal device sends a feedback message to the network device, where the feedback message is used to indicate that the a coded block or a coded block group that is successfully coded in the transported transport block, and/or a coded block or a coded block group that is used to indicate that the block is not successfully decoded, so that the network device can determine that the terminal device is to be heavier according to the feedback information.
  • the coded block or coded block group passed.
  • the second information domain may be referred to as an MCS information domain, but the embodiment of the present application is not limited thereto.
  • the downlink control signaling may include an information domain, and according to the information domain, the terminal device may index to the target transport block.
  • the downlink control signaling may not include the information domain.
  • the terminal device may determine the transport block of the previous transmission as the target transport block, or the terminal device determines.
  • the transport block to be transmitted can be determined as the target transport block.
  • the transport block is a transmission unit at the time of initial transmission, and other terms such as a data group and a data group may also be used.
  • the downlink control signaling scheduling target transport block may be to schedule all data in the transport block, that is, the entire transport block needs to be transmitted between the terminal device and the network device, and the downlink control is performed.
  • the signaling scheduling target transport block may be to schedule part of the data in the transport block, that is, the partial data of the transport block needs to be transmitted between the terminal device and the network device.
  • FIG. 3 is a schematic flowchart of a wireless communication method 300 according to an embodiment of the present application. As shown in FIG. 3, the method 300 includes the following.
  • the network device generates downlink control signaling
  • the downlink control signaling includes a first information domain and a second information domain, where the first information domain is used to indicate whether the target transport block scheduled by the downlink control signaling is a primary transmission or a repeated transmission;
  • the second information field is used to indicate a modulation and coding level, and the modulation and coding level is used for transmitting the target transport block between the terminal device and the network device.
  • the second information field is used to indicate a coding block or a coding block group to be retransmitted in the target transport block.
  • the second information field includes N bits, and when the target transport block scheduled by the downlink control signaling is a repeated transmission, the M bits of the N bits are used to indicate the coded block to be retransmitted or A coded block group, wherein the N is a positive integer, and the M is a positive integer not greater than N.
  • the M is smaller than N, and when the target transport block scheduled by the downlink control signaling is a repetitive transmission, the other bits of the N bits included in the second information domain except the M bits are indicated.
  • the target transport block when the target transport block is a repetitive transmission, the target transport block includes M coding blocks or a coding block group, where the M bits indicate, by means of bit mapping, each of the M coding blocks or the coding block group. Whether the code block or code block group needs to be retransmitted.
  • the target transmission block is repeated passages, the M bits indicating an encoding block 2 M kinds of coded blocks in the set of the set of the coded block to be retransmitted coded block group comprising or encoding the A block of code or a block of coded blocks included in a set of blocks.
  • all fields in the second information field are used to indicate the first modulation and coding level.
  • the first information field is used to indicate the current number of transmissions of the target transport block scheduled by the downlink control signaling.
  • the value of the first information field is 0 or 1; where 0 is used to indicate that the target transport block is the initial transmission, 1 is used to indicate that the target transport block is a repeated transmission, or 1 is used to indicate the The target transport block is the initial transmission, and 0 is used to indicate that the target transport block is a duplicate transmission.
  • the first information field includes a first field and a second field
  • the first field is used to indicate whether the data scheduled by the downlink control signaling is new data compared with the last scheduled data in the time domain, and the second field is used to indicate that the downlink control signaling is scheduled.
  • the number of times the data is currently transmitted is the result of modulo n.
  • N is optionally 2.
  • the downlink control signaling includes a third information field, where the third information field is used to indicate that the coding block or the coding block group is transmitted when the target transmission block scheduled by the downlink control signaling is repeated transmission.
  • Resource location and/or size are used to indicate that the coding block or the coding block group is transmitted when the target transmission block scheduled by the downlink control signaling is repeated transmission.
  • the network device receives a feedback message sent by the terminal device, where the feedback message is used to indicate a coded block or a coded block group successfully decoded in the target transport block, and/or a code block that is not successfully decoded. Or coding a block group, according to which the network device determines a coded block or a coded block group in the target transport block that needs to be retransmitted.
  • the network device sends the downlink control signaling to the terminal device.
  • the downlink control signaling includes a first information domain and a second information domain
  • the terminal device may determine, from the first information domain, whether the currently scheduled transport block is the first transmission or the repeated transmission;
  • the terminal device may determine, from the second information domain, a modulation coding level for transmitting the transport block; and when the currently scheduled transport block is a repeated transmission, the terminal device is from the second information domain.
  • Determining the coded block or the coded block group to be retransmitted in the transport block, and retransmitting the coded block or the coded block group may be performed in units of coded blocks or coded block groups during retransmission, and may avoid heavy
  • the information generated by the transport block is wasteful, and the information field indicating the modulation and coding level of the transport block is the same as the information field indicating the coded block or the coded block group to be retransmitted, and the original information domain bearer can be borrowed. More information, avoiding excessive signaling changes, compatibility with more terminal devices, and no need to add new information fields in the downlink control signaling. Resources.
  • FIG. 4 is a schematic block diagram of a terminal device 400 according to an embodiment of the present application. As shown in FIG. 4, the terminal device 400 includes a transceiver unit 410 and a processing unit 420.
  • the transceiver unit 410 is configured to: receive downlink control signaling sent by the network device, where the downlink control signaling includes a first information domain and a second information domain;
  • the processing unit 420 is configured to: determine, according to the first information domain, whether the target transport block scheduled by the downlink control signaling is a primary transmission or a repeated transmission; when the target transmission block scheduled by the downlink control signaling is initially transmitted Determining a modulation coding level according to the second information domain;
  • the transceiver unit 410 is further configured to: when the target transmission block scheduled by the downlink control signaling is initially transmitted, use the modulation and coding level to perform transmission of the target transport block with the network device;
  • the processing unit 420 is further configured to: when the target transport block scheduled by the downlink control signaling is repeatedly transmitted, determine, according to the second information domain, a code to be retransmitted in the target transport block. Code block or code block group;
  • the transceiver unit 410 is further configured to: when the target transmission block scheduled by the downlink control signaling is repeatedly transmitted, perform transmission of the coding block or the coding block group with the network device.
  • the second information field includes N bits, and when the target transport block scheduled by the downlink control signaling is repeatedly transmitted, M bits of the N bits are used to indicate the to-be-weighted a coded block or a coded block group, wherein the N is a positive integer, and the M is a positive integer not greater than N;
  • the processing unit 420 is further configured to: determine, according to the M bits, the coded block or the coded block group to be retransmitted.
  • the M is less than N;
  • the processing unit 420 is further configured to:
  • the transceiver unit 410 is further configured to: perform transmission of the coding block or the coding block group with the network device by using the modulation mode.
  • the target transport block includes M coding blocks or a coding block group, and when the target transmission block scheduled by the downlink control signaling is repeatedly transmitted, the M bits indicate by using a bit mapping manner. Whether each code block or code block group in the M coding blocks or coding block groups is retransmitted.
  • the M bits indicate one of the 2 M coding block sets, and the coded block to be retransmitted Or the coding block group is a coding block or a coding block group included in the one coding block set.
  • all fields in the second information field are used to indicate the modulation and coding level.
  • the first information field is used to indicate a current number of transmissions of the target transport block scheduled by the downlink control signaling
  • the processing unit 420 is further configured to:
  • the value of the first information field is 0 or 1; wherein 0 is used to indicate that the target transport block is an initial transmission, and 1 is used to indicate that the target transport block is a repeated transmission; or, The indication that the target transport block is an initial transmission, and 0 is used to indicate that the target transport block is a repeated transmission;
  • the processing unit 420 is further configured to:
  • the first information field includes a first field and a second field
  • the first field is used to indicate whether the target transport block scheduled by the downlink control signaling is new data compared with the last scheduled data in the time domain, and the second field is used to indicate The number of times the data is currently transmitted by the downlink control signaling is modulo the result of n, where n is a positive integer;
  • the processing unit 420 is further configured to:
  • n 2.
  • the downlink control signaling includes a third information domain, where the processing unit 420 is further configured to: when the target transport block scheduled by the downlink control signaling is repeatedly transmitted,
  • the transceiver unit 410 is further configured to include:
  • the transmission of the coding block or the coding block group is performed between the terminal device and the network device.
  • the target transport block scheduled by the downlink control signaling is a repetitive transmission
  • the target transport block scheduled by the downlink control signaling is downlink data
  • the transceiver unit is further configured to: receive a network device Before transmitting the downlink control signaling, sending a feedback message to the network device, where the feedback message is used to indicate a coded block or a coded block group successfully decoded in the target transport block, and/or used to indicate that A successfully decoded coded block or coded block set.
  • terminal device 400 may correspond to the terminal device in the method 200, and the corresponding functions implemented by the terminal device in the method 200 may be implemented. For brevity, no further details are provided herein.
  • FIG. 5 is a schematic block diagram of a network device 500 in accordance with an embodiment of the present application. As shown in FIG. 5, the network device 500 includes a transceiver unit 510 and a processing unit 520.
  • the processing unit 510 is configured to: generate downlink control signaling
  • the downlink control signaling includes a first information domain and a second information domain, where the first information domain is used to indicate whether the target transport block scheduled by the downlink control signaling is a primary transmission or a repeated transmission;
  • the second information field is used to indicate a modulation and coding level, where the modulation and coding level is used between the terminal device and the network device. Transmission of the target transport block;
  • the second information field is used to indicate a coding block or a coding block group to be retransmitted in the target transport block
  • the transceiver unit 520 is configured to: send the downlink control signaling to the terminal device.
  • the second information field includes N bits, and when the target transport block scheduled by the downlink control signaling is a repetitive transmission, M bits of the N bits are used to indicate the to-be-supplied A retransmitted coded block or coded block set, wherein said N is a positive integer and said M is a positive integer not greater than N.
  • the M is smaller than N, and when the target transport block scheduled by the downlink control signaling is a repetitive transmission, among the N bits included in the second information domain, except the M bits. Other bits indicating the modulation scheme for the coded block or coded block group to be retransmitted.
  • the target transport block includes M coding blocks or a coding block group, and when the target transport block scheduled by the downlink control signaling is repeated transmission, the M bits indicate the M by bit mapping. Whether each code block or code block group in the code block or code block group needs to be retransmitted.
  • the M bits indicate one of the 2 M coding block sets, and the coded block to be retransmitted or
  • the coding block group includes a coding block or a coding block group included in the one coding block set.
  • all fields in the second information domain are used to indicate the first modulation and coding level.
  • the first information field is used to indicate a current number of transmissions of the target transport block scheduled by the downlink control signaling.
  • the value of the first information field is 0 or 1; wherein 0 is used to indicate that the target transport block is an initial transmission, and 1 is used to indicate that the target transport block is a repeated transmission; or, The indication that the target transport block is an initial transmission, and 0 is used to indicate that the target transport block is a repeated transmission.
  • the first information field includes a first field and a second field
  • the first field is used to indicate whether the data scheduled by the downlink control signaling is new data compared with the last scheduled data in the time domain
  • the second field is used to indicate the downlink control.
  • the number of times the data of the signaling schedule is currently transmitted is modulo the result of n.
  • n 2.
  • the downlink downlink control signaling includes a third information domain, where the third information domain is used to indicate that the coding block is performed when the target transport block scheduled by the downlink control signaling is a repetitive transmission. Or encode the resource location and/or size of the block group as it is transmitted.
  • the downlink control signaling scheduled data is downlink data
  • the target transport block is repeated transmission
  • the transceiver unit is further configured to: receive a feedback message sent by the terminal device, where the feedback message is used to Indicating a coded block or a coded block group successfully decoded in the target transport block, and/or a coded block or a coded block group that has not been successfully decoded;
  • the processing unit 510 is further configured to: determine, according to the feedback message, a coded block to be retransmitted in the target transport block, to generate the downlink control signaling.
  • the network device 500 may correspond to the network device in the method 300, and the corresponding functions implemented by the network device in the method 300 may be implemented. For brevity, no further details are provided herein.
  • FIG. 6 is a schematic block diagram of a communication device 600 in accordance with an embodiment of the present application.
  • the communication device 600 includes a processor 610 and a memory 620.
  • the memory 620 can store program code, and the processor 610 can execute the program code stored in the memory 620.
  • the communication device 600 can include a transceiver 630 that can control the transceiver 630 to communicate externally.
  • the processor 610 can call the program code stored in the memory 620 to perform the corresponding operations of the terminal device in the method 200 shown in FIG. 2, and details are not described herein for brevity.
  • the processor 610 can call the program code stored in the memory 620 to perform the corresponding operations of the network device in the method 300 shown in FIG. 2, and details are not described herein for brevity.
  • FIG. 7 is a schematic structural diagram of a system chip 700 according to an embodiment of the present application.
  • the system chip 700 of FIG. 7 includes an input interface 701, an output interface 702, the processor 703, and a memory 704 connected by a communication connection, and the processor 703 is configured to execute code in the memory 704.
  • the processor 703 implements the method performed by the terminal device in the method 200 shown in FIG. 2. For the sake of brevity, it will not be repeated here.
  • the processor 703 implements the method performed by the network device in the method 300 shown in FIG. For the sake of brevity, it will not be repeated here.
  • the disclosed systems, devices, and methods may be implemented in other manners.
  • the device embodiments described above are merely illustrative.
  • the division of the unit is only a logical function division.
  • there may be another division manner for example, multiple units or components may be combined or Can be integrated into another system, or some features can be ignored or not executed.
  • the mutual coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, and may be in an electrical, mechanical or other form.
  • the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of the embodiment.
  • each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.
  • the functions may be stored in a computer readable storage medium if implemented in the form of a software functional unit and sold or used as a standalone product.
  • the technical solution of the present application which is essential or contributes to the prior art, or a part of the technical solution, may be embodied in the form of a software product, which is stored in a storage medium, including
  • the instructions are used to cause a computer device (which may be a personal computer, server, or network device, etc.) to perform all or part of the steps of the methods described in various embodiments of the present application.
  • the foregoing storage medium includes: a U disk, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk, and the like. .

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

Abstract

L'invention concerne un procédé de communication sans fil, un dispositif terminal et un dispositif de réseau, lesquels peuvent économiser des ressources et sont compatibles avec plusieurs dispositifs terminaux. Le procédé comprend les étapes suivantes : un dispositif terminal reçoit une signalisation de commande de liaison descendante envoyée par un dispositif de réseau, la signalisation de commande de liaison descendante comprenant un premier domaine d'informations et un second domaine d'informations ; le dispositif terminal détermine, selon le premier domaine d'informations, si un bloc de transport cible programmé par la signalisation de commande de liaison descendante est transporté pour la première fois ou est transporté à nouveau ; lorsque le bloc de transport cible programmé par la signalisation de commande de liaison descendante est transporté pour la première fois, le dispositif de terminal détermine, selon le second domaine d'informations, un niveau de modulation et de codage, et transporte, avec le dispositif de réseau, le bloc de transport cible à l'aide du niveau de modulation et de codage ; et lorsque le bloc de transport cible programmé par la signalisation de commande de liaison descendante est transporté à nouveau, le dispositif terminal détermine, selon le second domaine d'informations, un bloc de codage ou un groupe de blocs de codage, dans le bloc de transport cible, à transporter à nouveau, et le dispositif terminal transporte, avec le dispositif de réseau, le bloc de codage ou le groupe de blocs de codage.
PCT/CN2017/074831 2017-02-24 2017-02-24 Procédé de communication sans fil, dispositif terminal et dispositif de réseau WO2018152789A1 (fr)

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PCT/CN2017/074831 WO2018152789A1 (fr) 2017-02-24 2017-02-24 Procédé de communication sans fil, dispositif terminal et dispositif de réseau
CN201780050018.4A CN109565866B (zh) 2017-02-24 2017-02-24 无线通信方法、终端设备和网络设备

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WO2023279405A1 (fr) * 2021-07-09 2023-01-12 华为技术有限公司 Procédé et appareil de communication, dispositif, et support de stockage

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WO2022027205A1 (fr) * 2020-08-03 2022-02-10 华为技术有限公司 Procédé, appareil et système de communication à courte distance

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CN102595596A (zh) * 2011-01-10 2012-07-18 华为技术有限公司 一种csi的传输方法和装置
CN103796327A (zh) * 2012-10-29 2014-05-14 中兴通讯股份有限公司 一种子帧调度方法、***及网络设备、终端
CN104065605A (zh) * 2013-03-22 2014-09-24 电信科学技术研究院 一种新载波类型载波上的通信方法及装置

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