WO2021068266A1 - 一种通信方法及装置 - Google Patents

一种通信方法及装置 Download PDF

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Publication number
WO2021068266A1
WO2021068266A1 PCT/CN2019/110899 CN2019110899W WO2021068266A1 WO 2021068266 A1 WO2021068266 A1 WO 2021068266A1 CN 2019110899 W CN2019110899 W CN 2019110899W WO 2021068266 A1 WO2021068266 A1 WO 2021068266A1
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Prior art keywords
mcs
end device
information
data
scheduling signaling
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PCT/CN2019/110899
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English (en)
French (fr)
Inventor
王俊伟
Original Assignee
华为技术有限公司
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Publication date
Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to PCT/CN2019/110899 priority Critical patent/WO2021068266A1/zh
Priority to CN201980101080.0A priority patent/CN114467346A/zh
Publication of WO2021068266A1 publication Critical patent/WO2021068266A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation

Definitions

  • This application relates to the field of mobile communication technology, and in particular to a communication method and device.
  • the scheduling information described in this application may be downlink control information (DCI), uplink control information (UCI), side link control information (sidelinik control information, SCI), and so on.
  • DCI downlink control information
  • UCI uplink control information
  • SCI side link control information
  • the first-level scheduling signaling can be used to carry channel detection information. After receiving the first-level scheduling signaling, the receiving end device can learn which transmission resources the transmitting end device may transmit data on according to the channel detection information, so that the receiving end device can avoid these transmission resources to reduce interference.
  • the second-level scheduling signaling can be used to carry data scheduling information, and is mainly used for receiving and demodulating data at the receiving end, so that the receiving end device can receive data according to the first-level SCI and the second-level scheduling signaling.
  • the foregoing first-level scheduling signaling and second-level scheduling signaling are jointly used for data scheduling.
  • the modulation and coding scheme (MCS) of the second-level scheduling signaling adopts a fixed format, and the flexible selection of the MCS of the second-level scheduling signaling is not supported, and the scheduling method is not flexible enough.
  • the present application provides a communication method and device for realizing the flexible configuration of the modulation and coding scheme (MCS) of the second-level scheduling signaling.
  • MCS modulation and coding scheme
  • this application provides a communication method.
  • the method can be executed by the receiving end device or the chip in the receiving end device.
  • the receiving end device refers to a device that receives the first-level scheduling signaling and the second-level scheduling signaling, and the first-level scheduling signaling and the second-level scheduling signaling jointly schedule the data sent or received by the receiving end device.
  • the receiving end device can receive the first information from the sending end device.
  • the first information can be used to determine the MCS used by the second-level scheduling signaling, and determine the second information from one or more modulation and coding formats MCS according to the first information.
  • MCS used for level scheduling signaling can be used to determine the MCS used by the second-level scheduling signaling, and determine the second information from one or more modulation and coding formats MCS according to the first information.
  • the sending end device can perform the flexible configuration of the MCS used in the second-level scheduling signaling to the receiving end device, which improves the flexibility of the two-level data scheduling.
  • the information of one or more MCS can be configured by the access network device, or can be stored in the receiving end device. Among them, the receiving end device accesses the access network device. In addition, the receiving end device may also receive an MCS list from the sending end device, where the MCS list includes information of the one or more MCSs.
  • the first information may include a first indication, and the indication is carried in the first-level scheduling signaling.
  • the first indication is used to indicate the index of the MCS used by the second-level scheduling signaling, so that an explicit indication of the MCS used by the second-level scheduling signaling can be realized through the first-level scheduling signaling.
  • the first indication may be a fixed field and/or dynamic padding information in the first-level scheduling signaling.
  • the receiving end device may determine the default MCS as the MCS adopted by the second level scheduling signaling.
  • the default MCS information may be stored in the sending end device, or the default MCS information may be configured by an access network device, and the receiving end device accesses the access network device.
  • the receiving end device may also determine the MCS adopted by the data according to the first MCS indication and the first indication received from the sending end device, so as to perform data transmission according to the MCS adopted by the data.
  • the first MCS indication may be carried in the second level scheduling signaling.
  • the first information may include indication information of the MCS used in the data. Then, after receiving the first information, the receiving end device may determine the MCS corresponding to the MCS used in the data as the MCS used in the second-level scheduling signaling according to the first correspondence relationship, where the first correspondence relationship includes a Or a correspondence between multiple MCSs and candidate MCSs of the data, where the candidate MCSs of the data include the MCS adopted by the data.
  • the first correspondence relationship may be stored in the receiving end device, or the first correspondence relationship may be sent to the receiving end device by the access network device.
  • the first information may include the index of the MCS used by the data. Then, after receiving the first information, the receiving end device can determine the index of the MCS used by the second-level scheduling signaling according to the ratio of M to N and the index of the MCS used by the data, where M is the standby Select the number of MCS, N is the set value.
  • the first information may include the index of the MCS used by the data.
  • the receiving end device can also receive a second indication from the sending end device or the access network device accessed by the receiving end device.
  • the second indication can be used to indicate the value of N.
  • the index of the MCS used in the data is used to determine the index of the MCS used in the second-level scheduling signaling, where M is the number of candidate MCSs.
  • this application provides a communication method. This method can be executed by the sender device or a chip in the sender device.
  • the sending end device refers to a device that sends the first level scheduling signaling and the second level scheduling signaling to the receiving end device.
  • the sending-end device may send first information to the receiving-end device, where the first information is used to determine the MCS used by the second-level scheduling signaling from one or more modulation and coding formats MCS.
  • the sending end device may send an MCS list to the receiving end device, where the MCS list includes information of the one or more MCSs.
  • the first information may include a first indication, and the first indication is carried in the first-level scheduling signaling.
  • the first indication may be used to indicate the index of the MCS adopted by the second-level scheduling signaling.
  • the first indication may be a fixed field and/or dynamic filling information in the first-level scheduling signaling.
  • the sending end device may also send a first MCS indication to the receiving end device, where the first MCS indication and the first indication are used to determine the MCS used by the data.
  • the first information may include indication information of the MCS used by the data, and the MCS used by the data has a corresponding relationship with the MCS used by the second-level scheduling signaling.
  • the first information may include the index of the MCS used by the data, and the MCS used by the data and the ratio of M to N may be used to determine the index of the MCS used by the second-level scheduling signaling.
  • the index of the MCS where M is the number of the candidate MCS, and N is the set value.
  • the first information may include the index of the MCS used by the data
  • the sending end device may also send a second indication to the receiving end device.
  • the second indication is used to determine the value of N, the MCS used by the data, and
  • the ratio of M to N can be used to determine the index of the MCS used by the second-level scheduling signaling, where M is the number of candidate MCSs, and N is the set value.
  • an embodiment of the present application provides a communication device.
  • the communication device may be used to execute the steps performed by the receiving end device in the first aspect or any possible design of the first aspect.
  • the communication device can implement each function or step or operation in each of the foregoing methods through a hardware structure, a software module, or a hardware structure plus a software module.
  • a communication device may be provided with functional modules corresponding to the functions or steps or operations in the foregoing methods to support the receiving end device to execute the foregoing methods.
  • the communication device may include a communication module and a processing module coupled with each other, wherein the communication module can be used to support the communication device to communicate, and the processing module can be used for the communication device to perform processing operations, Such as generating information/messages that need to be sent, or processing received signals to obtain information/messages.
  • the above communication module can be used to perform the sending and/or receiving actions of the receiving end device in any possible design of the first aspect and/or the first aspect, such as being used to perform the receiving end device sending information, messages, and signaling to the sending end device Or the action of data, or the action of receiving information, message, signaling or data from the sending end device.
  • the processing module can be used to perform the processing actions of the receiving end device in the first aspect and/or any possible design of the first aspect, for example, to control the communication module to receive and send information, messages or signaling,
  • operations such as information storage are used to determine the MCS adopted by the second-level scheduling signaling from one or more MCSs, or for another example, to determine whether the first-level scheduling signaling includes the first indication.
  • the communication module may be used to receive the first information from the sending end device, and the first information may be used to determine the MCS used by the second-level scheduling signaling.
  • the processing module may be used to determine the MCS used by the second-level scheduling signaling from one or more modulation and coding formats MCS according to the first information.
  • the information of one or more MCS may be configured by an access network device, or stored in the receiving end device, and the receiving end device is connected to the access network device.
  • the communication module may also be configured to receive an MCS list from the sending end device, where the MCS list includes information about the one or more MCSs.
  • the first information may include a first indication
  • the first indication is carried in the first-level scheduling signaling
  • the first indication may be used to indicate the second-level scheduling information. Order the index of the MCS used.
  • the first indication may be a fixed field and/or dynamic filling information in the first-level scheduling signaling.
  • the receiving end device may determine the default MCS as the MCS adopted by the second-level scheduling signaling.
  • the information of the default MCS may be stored in the sending end device, or the information of the default MCS may be configured by an access network device, and the receiving end device is connected to the access network device.
  • the processing module may also determine the MCS used by the data according to the first MCS indication and the first indication received by the communication module from the sending end device, so as to perform data transmission according to the MCS used by the data.
  • the first MCS indication may be carried in the second level scheduling signaling.
  • the first information may include indication information of the MCS used in the data. Then, after the communication module receives the first information, the processing module may determine the MCS corresponding to the MCS adopted by the data as the MCS adopted by the second-level scheduling signaling according to the first correspondence, where the first correspondence includes Correspondence between one or more MCSs and candidate MCSs of the data, and the candidate MCSs of the data include the MCS adopted by the data.
  • the first correspondence relationship may be stored in the receiving end device, or the first correspondence relationship may be sent to the receiving end device by the access network device.
  • the first information may include the index of the MCS used by the data. Then, after the communication module receives the first information, the processing module can determine the index of the MCS used by the second-level scheduling signaling according to the ratio of M to N and the index of the MCS used by the data, where M is the The number of alternative MCS, N is the set value.
  • the first information may include the index of the MCS used by the data.
  • the communication module may also receive a second instruction from the access network device accessed by the transmitting end device or the receiving end device, and the second instruction may be used to indicate the value of N, and the processing module may use the ratio of M to N and the data
  • the index of the adopted MCS determines the index of the MCS adopted by the second-level scheduling signaling, where M is the number of candidate MCSs.
  • the communication device may include a processor for executing the steps performed by the receiving end device in the foregoing first aspect and/or any possible design of the first aspect.
  • the communication device may further include a memory.
  • the memory can be used to store instructions (or programs, computer programs), so that the processor can call and run the instructions from the memory to execute any possible design of the first aspect and/or the first aspect. Steps performed by the receiving device.
  • the communication device may further include a transceiver for the communication device to communicate.
  • the transceiver may be used to perform the sending and/or receiving actions performed by the receiving end device in any possible design of the first aspect and/or the first aspect, such as being used to perform the receiving end device sending information to the sending end device, The action of message, signaling, or data, or the action of receiving information, message, signaling, or data from the sending end device.
  • the processor can be used to perform the processing actions of the receiving end device in any possible design of the first aspect and/or the first aspect, such as being used to control the transceiver to receive and send information, messages, or signaling, and Control the storage of information and so on.
  • the transceiver can be used to perform the steps performed by the communication module described in the third aspect above.
  • the processor may be used to execute the steps executed by the processing module described in the third aspect above.
  • an embodiment of the present application provides a communication device.
  • the communication device can be used to execute the steps performed by the sending end device in the first aspect or any possible design of the first aspect.
  • the communication device can implement each function or step or operation in each of the foregoing methods through a hardware structure, a software module, or a hardware structure plus a software module.
  • a communication device may be provided with functional modules corresponding to the functions or steps or operations in the foregoing methods to support the sending end device to execute the foregoing methods.
  • the communication device may include a communication module and a processing module coupled with each other, wherein the communication module can be used to support the communication device to communicate, and the processing module can be used for the communication device to perform processing operations, Such as generating information/messages that need to be sent, or processing received signals to obtain information/messages.
  • the above communication module can be used to perform the sending and/or receiving actions of the sending end device in any possible design of the second aspect and/or the second aspect, such as for sending information, messages, and signaling from the receiving end device to the receiving end device Or data movement.
  • the processing module can be used to perform the processing actions of the sending end device in any possible design of the second aspect and/or the second aspect, for example, to control the communication module to receive and send information, messages or signaling, And the storage of information and other operations.
  • the communication module may be used to send first information to the receiving end device, where the first information is used to determine the MCS used by the second-level scheduling signaling from one or more modulation and coding formats MCS.
  • the communication module may also send an MCS list to the receiving end device, where the MCS list includes information of the one or more MCSs.
  • the first information may include a first indication, and the first indication is carried in the first-level scheduling signaling.
  • the first indication may be used to indicate the index of the MCS adopted by the second-level scheduling signaling.
  • the first indication may be a fixed field and/or dynamic filling information in the first-level scheduling signaling.
  • the communication module may also send a first MCS indication to the receiving end device, and the first MCS indication and the first indication are used to determine the MCS adopted by the data.
  • the first information may include indication information of the MCS used by the data, and the MCS used by the data has a corresponding relationship with the MCS used by the second-level scheduling signaling.
  • the first information may include the index of the MCS used by the data, and the MCS used by the data and the ratio of M to N may be used to determine the index of the MCS used by the second-level scheduling signaling.
  • the index of the MCS where M is the number of the candidate MCS, and N is the set value.
  • the first information may include the index of the MCS used by the data
  • the communication module may also send a second indication to the receiving end device.
  • the second indication is used to determine the value of N, the MCS used by the data and M
  • the ratio to N may be used to determine the index of the MCS used by the second-level scheduling signaling, where M is the number of candidate MCSs, and N is the set value.
  • the communication device may include a processor for executing the steps executed by the sending end device in any possible design of the second aspect and/or the second aspect.
  • the communication device may further include a memory.
  • the memory may be used to store instructions, and the processor may be used to call and run the instructions from the memory to execute the steps executed by the sending end device in the second aspect and/or any possible design of the second aspect.
  • the communication device may further include a transceiver for the communication device to communicate.
  • the transceiver can be used to execute the sending and/or receiving actions of the sending end device in any possible design of the second aspect and/or the second aspect, such as sending information or messages from the sending end device to the receiving end device. , Signaling or data actions, or to perform actions to receive information, messages, signaling, or data from the receiving end device.
  • the processor can be used to perform the processing actions of the transmitting end device in any possible design of the second aspect and/or the second aspect, such as controlling the transceiver to receive and send information, messages or signaling, and Control the storage of information and so on.
  • the transceiver can be used to perform the steps performed by the communication module described in the fourth aspect above.
  • the processor may be used to execute the steps executed by the processing module described in the fourth aspect above.
  • the present application provides a communication system, which may include the communication device shown in the third aspect and the communication device shown in the fourth aspect.
  • the communication device shown in the third aspect may be composed of software modules and/or hardware components.
  • the communication device shown in the fourth aspect may be composed of software modules and/or hardware components.
  • the sending end device can be used to send the first information to the receiving end device, and the receiving end The device can be used to receive the first information, and determine the MCS used by the second-level scheduling signaling from one or more modulation and coding format MCS according to the first information, so as to realize the flexible configuration of the MCS used by the second-level scheduling signaling.
  • the second-level scheduling signaling and the first-level scheduling signaling are used for scheduling data, and the first-level scheduling signaling is sent by the transmitting end device.
  • the present application provides a computer storage medium that stores instructions in the computer storage medium, which when invoked and executed on a computer, cause the computer to execute the first aspect or any one of the possibilities of the first aspect. Design, or the method described in the second aspect or any one of the possible designs of the second aspect.
  • the present application provides a computer program product, which may contain instructions that when the computer program product runs on a computer, the computer can execute the first aspect or any one of the possible designs of the first aspect. , Or the method described in the second aspect or any one of the possible designs of the second aspect.
  • the present application provides a chip and/or a chip system including the chip, and the chip may include a processor.
  • the chip may also include a memory (or storage module) and/or a transceiver (or communication module).
  • the chip can be used to implement the method described in the first aspect or any one of the possible designs of the first aspect, or the second aspect or any one of the possible designs of the second aspect.
  • the chip system may be composed of the above-mentioned chips, or may include the above-mentioned chips and other discrete devices, such as a memory (or storage module) and/or a transceiver (or communication module).
  • FIG. 1 is a schematic diagram of the architecture of a wireless communication system provided by an embodiment of this application;
  • FIG. 2 is a schematic diagram of the architecture of another wireless communication system provided by an embodiment of the application.
  • FIG. 3 is a schematic flowchart of a communication method provided by an embodiment of this application.
  • FIG. 4 is a schematic flowchart of another communication method provided by an embodiment of this application.
  • FIG. 5 is a schematic flowchart of another communication method provided by an embodiment of this application.
  • FIG. 6 is a schematic flowchart of another communication method provided by an embodiment of this application.
  • FIG. 7 is a schematic flowchart of another communication method provided by an embodiment of this application.
  • FIG. 8 is a schematic structural diagram of a communication device provided by an embodiment of this application.
  • FIG. 9 is a schematic structural diagram of another communication device provided by an embodiment of this application.
  • FIG. 10 is a schematic structural diagram of another communication device provided by an embodiment of this application.
  • FIG. 11 is a schematic structural diagram of another communication device provided by an embodiment of this application.
  • the communication method provided in the embodiments of the present application may be applied to a wireless communication system, and the wireless communication system may include a sending end device and a receiving end device, wherein the sending end device performs data scheduling of the receiving end device through two levels of scheduling information. Specifically, the sending end device can schedule data through the first level scheduling signaling and the second level scheduling signaling.
  • the data may include data sent from the sending end device to the receiving end device and/or from the receiving end device to the sending end device. The data sent.
  • the first-level scheduling signaling is mainly used to carry channel detection information, so that the receiving end device can learn which SL resources can be used for data transmission.
  • the second-level scheduling signaling is mainly used to carry data scheduling information, which is used to receive and demodulate data at the receiving end.
  • Data scheduling information such as hybrid automatic repeat request (HARQ) information, such as the progress of the HARQ process Number, retransmission/new transmission identification, etc.
  • HARQ hybrid automatic repeat request
  • the above wireless communication system can be applied to both low-frequency scenarios (sub 6G) and high-frequency scenarios (above6G).
  • the application scenarios of wireless communication systems include but are not limited to long term evolution (LTE) systems, LTE frequency division duplex (FDD) systems, LTE time division duplex (TDD), general mobile communications System (universal mobile telecommunication system, UMTS), worldwide interoperability for microwave access (WiMAX) communication system, future fifth-generation system, new radio (NR) communication system, or future evolved public Land mobile network (public land mobile network, PLMN) system, etc.
  • LTE long term evolution
  • FDD frequency division duplex
  • TDD LTE time division duplex
  • UMTS general mobile communications System
  • WiMAX worldwide interoperability for microwave access
  • NR new radio
  • PLMN public Land mobile network
  • the wireless communication system may include a terminal 101 and a network device 102.
  • the network device 102 can be used as a transmitting end device
  • the terminal 101 can be used as a receiving end device.
  • the terminal 101 shown above may be a user equipment (UE), a terminal (terminal), an access terminal, a terminal unit, a terminal station, a mobile station (MS), a remote station, a remote terminal, and a mobile terminal (mobile terminal). terminal), wireless communication equipment, terminal agent or terminal equipment, etc.
  • the terminal 101 may have a wireless transceiver function, which can communicate with one or more network devices of one or more communication systems (such as wireless communication), and accept network services provided by the network devices.
  • the network devices here include but are not limited to The network device 102 is shown.
  • the terminal 101 may be a cellular phone, a cordless phone, a session initiation protocol (session initiation protocol, SIP) phone, a wireless local loop (WLL) station, a personal digital assistant (PDA) device, and Handheld devices with wireless communication functions, computing devices or other processing devices connected to wireless modems, in-vehicle devices, wearable devices, terminal devices in the future 5G network or terminal devices in the future evolved PLMN network, etc.
  • SIP session initiation protocol
  • WLL wireless local loop
  • PDA personal digital assistant
  • the terminal 101 can be deployed on the land, including indoor or outdoor, handheld or vehicle-mounted; the terminal 101 can also be deployed on the water (such as ships, etc.); the terminal 101 can also be deployed in the air (such as airplanes, balloons, and satellites, etc.) .
  • the terminal 101 may specifically be a mobile phone (mobile phone), a tablet computer (pad), a computer with wireless transceiving function, a virtual reality (VR) terminal, an augmented reality (AR) terminal, an industrial control (industrial control) terminal.
  • VR virtual reality
  • AR augmented reality
  • industrial control industrial control
  • Wireless terminal in control wireless terminal in self-driving (self-driving), wireless terminal in remote medical (remote medical), wireless terminal in smart grid (smart grid), wireless terminal in transportation safety (transportation safety) Terminals, wireless terminals in smart cities, wireless terminals in smart homes, etc.
  • the terminal 101 may also be a communication chip with a communication module.
  • the network device 102 may be an access network device (or called an access website point).
  • the access network equipment refers to equipment that provides network access functions, such as a radio access network (RAN) base station and so on.
  • the network device 102 may specifically include a base station (base station, BS), or include a base station and a radio resource management device for controlling the base station, and so on.
  • the network device 102 may also include a relay station (relay device), an access point, and a base station in a future 5G network, a base station in a future evolved PLMN network, or an NR base station, etc.
  • the network device 102 may be a wearable device or a vehicle-mounted device.
  • the network device 102 may also be a communication chip with a communication module.
  • the network equipment 102 includes but is not limited to: next-generation base stations (gnodeB, gNB) in 5G, evolved node B (evolved node B, eNB) in LTE system, radio network controller (RNC) , Node B (NB) in WCDMA system, wireless controller under CRAN system, base station controller (BSC), base transceiver station (BTS) in GSM system or CDMA system , Home base station (for example, home evolved nodeB, or home node B, HNB), baseband unit (BBU), transmission point (transmitting and receiving point, TRP), transmission point (transmitting point, TP), or mobile switching center Wait.
  • next-generation base stations gnodeB, gNB
  • gNB next-generation base stations
  • gNB next-generation base stations
  • gNB next-generation base stations
  • gNB next-generation base stations
  • gNB next-generation base stations
  • gNB next-generation base stations
  • gNB next-generation base stations
  • the network device 102 can schedule data of the terminal 101 through the first-level scheduling signaling and the second-level scheduling signaling.
  • the first-level scheduling signaling may be the first-level downlink control information (DCI) or the first-level uplink control information (uplink control information, UCI)
  • the second-level scheduling signaling may be the second-level DCI Or second level UCI.
  • the first level DCI and the second level DCI can be used to schedule downlink data sent by the network device 102 to the terminal 101, and the downlink data can be carried on a physical downlink shared channel (PDSCH).
  • the first level UCI and the second level UCI can be used to schedule downlink data sent by the terminal 101 to the network device 102, and the downlink data can be carried on a physical uplink shared channel (PUSCH).
  • PUSCH physical uplink shared channel
  • the wireless communication system may include a terminal 103 and a terminal 104, and the terminal 103 and the terminal 104 may perform SL communication.
  • the terminal 103 can be used as a transmitting end device, and the terminal 104 can be used as a receiving end device.
  • the terminal 104 may be used as a transmitting end device, and the terminal 103 may be used as a receiving end device.
  • the terminal 103 can schedule the data of the terminal 104 through the first-level scheduling signaling and the second-level scheduling signaling.
  • the first-level scheduling signaling may be a first-level SCI
  • the second-level scheduling signaling may be a second SCI, where the first-level SCI and the second-level SCI may be used to schedule the terminal 103 to the terminal.
  • the data sent by 104, and/or, is used to schedule the data sent from the terminal 104 to the terminal 103.
  • the data transmitted between the terminal 103 and the terminal 104 may be carried on a physical sidelink shared channel (PSSCH).
  • PSSCH physical sidelink shared channel
  • the terminal 103 and the terminal 104 may be user equipment, terminal, access terminal, terminal unit, terminal station, mobile station, remote station, remote terminal, mobile terminal, wireless communication equipment, terminal agent or terminal equipment, etc., for details, please refer to The above description is about the terminal 101.
  • the terminal 103 can also access the access network device, so that the access network device can configure the SL link between the terminal 103 and the terminal 104, and the SL link is used for the SL communication between the terminal 103 and the terminal 104 .
  • the access network device may be a device such as a RAN base station.
  • the terminal 104 can access the access network device shown in FIG. 2 or access other access network devices not shown in FIG. 2.
  • an embodiment of the application provides a communication method to flexibly select the MCS used by the second-level scheduling signaling to facilitate the sending and receiving equipment in the wireless communication system.
  • the terminal equipment implements data transmission according to the MCS adopted by the second-level scheduling signaling.
  • the communication method provided by the embodiment of the present application may include the following steps as shown in FIG. 3:
  • the sending-end device sends first information to the receiving-end device, and the first information is used for the MCS used by the second-level scheduling signaling (for a brief description in the following, it may be referred to as the MCS used by the second-level scheduling signaling) It is determined, wherein the second-level scheduling signaling and the first-level scheduling signaling jointly schedule data, and the first-level scheduling signaling is sent by the transmitting end device to the receiving end device.
  • the second-level scheduling signaling and the first-level scheduling signaling may be used to schedule data transmitted between the transmitting end device and the receiving end device.
  • the receiving end device receives the first information.
  • the receiving end device determines the MCS used by the second-level scheduling signaling from one or more MCSs according to the first information.
  • the flexible configuration of the MCS used in the second-level scheduling signaling can be realized, and the flexibility of data scheduling can be improved.
  • the above sending end device may be the network device 102 shown in FIG. 1, and the receiving end device may be the terminal 101 described in FIG. 1, or the above sending end device may be the network device shown in FIG. 2. 103.
  • the receiving end device may be the terminal 104 as described in FIG. 2.
  • the above one or more MCS can be configured by the sender device to the receiver device, defined by the protocol or determined by pre-configuration, so that the sender device and the receiver device agree on the setting of one or more MCS, so the sender The device and the access point device can determine the MCS of the system according to the first information as the MCS adopted by the second-level scheduling signaling.
  • one or more MCSs can be configured to the terminal 103 and/or the terminal 104 by the access network device.
  • one or more MCSs may be expressed as an MCS list, and the MCS list may carry information of one or more MCSs.
  • the information of MCS may include any one or more of information such as MCS index, modulation order, target code rate, or spectral efficiency.
  • MCS index can be expressed as I MCS
  • modulation order can be expressed as Q m
  • spectral efficiency can be expressed as R
  • target code rate can be expressed as R x [1024], that is, the value of the target code rate is equal to R *1024.
  • the MCS list in this application is only one of the manifestations of one or more MCSs. The following is for convenience of description, and it can be understood that the MCS list is used to represent one or more MCSs. Among them, the MCS list refers to the effective MCS list configured on the sending end device and the receiving end device. Among them, the sending end device and the receiving end device can maintain one or more candidate MCS lists at the same time. In the case of maintaining multiple candidate MCS lists, any two candidate MCS lists in the multiple MCS lists are not valid at the same time.
  • the access network device that can be accessed by the sending end device and/or the receiving end device indicates the effective MCS list among the multiple candidate MCS lists through signaling.
  • the network device 102 may indicate the effective MCS list to the terminal 101.
  • the access network device may indicate the effective MCS list to the terminal 103 and/or the terminal 104. List of MCS.
  • the terminal 103 may indicate the effective MCS list to the terminal 104.
  • the above multiple candidate MCS lists can be configured in a similar manner to the effective MCS list, which is configured by the access network device, defined by the protocol, or determined by a pre-configuration method.
  • the coding rate factor of the second-level MCS can be set on the basis of the MCS list shown in Table 1, to obtain the MCS list shown in Table 2.
  • the value of the coding rate factor is less than 1, for example, the coding rate factor may be 1/2, 1/3.125 or other values.
  • the code rate of the MCS can be adjusted according to the coding rate factor corresponding to the MCS, and the adjusted code rate is used as the MCS used in the second-level scheduling signaling. Bit rate.
  • the MCS of the second-level scheduling signaling is the MCS indexed as "0" in Table 2
  • the Q m of the MCS of the second-level scheduling signaling is 2 shown in Table 2.
  • the code rate of each MCS adjusted according to the code rate factor of each MCS may also be configured in Table 2.
  • the code rate R of the MCS with an index of "0" may be configured to be 0.1172.
  • the first information in S101 can be used to indicate one of the one or more MCSs described in the MCS list, for example
  • the first information may indicate the MCS index by bits to indicate that the MCS is the MCS adopted by the second-level scheduling signaling.
  • the first information may include a first indication, and the first indication may be carried in the first-level scheduling signaling.
  • the first indication is a field in the first-level scheduling signaling, such as a fixed field, or dynamic padding information, or a joint indication of a fixed field and a dynamic padding field.
  • the fixed field is the field information that is fixedly included in the first-level scheduling signaling
  • the dynamic padding information is the padding information originally added to make the sum of the lengths of all the fields defining the scheduling signaling terminal reach a predetermined value.
  • the combination of fixed fields and dynamic padding information means that when the first-level scheduling signaling does not contain dynamic padding information, a fixed field indication is used. When the first-level scheduling signaling contains dynamic padding information, the fixed field and padding information can be used together. Instructions.
  • the value of the padding information can be taken as the first MCS indication adopted by the secondary SCI.
  • the value of the padding information can be used as the index of the MCS used by the second-level scheduling signaling. For example, if the number of bits of the padding is 1, the padding information "0" indicates the MCS index "0", and the padding information "1" indicates the MCS index "1". For another example, if the number of bits of the padding is 2, the padding information "00" indicates the MCS index "0", the padding information "01” indicates the MCS index "1", and the padding information "10” indicates the MCS index "2". The information "11” represents the MCS index "3". For another example, if the number of bits of the padding is 3, the padding information "101" indicates the MCS index "5", and the padding information "111” indicates the MCS index "7".
  • the value of X bits in the padding information can be taken as the second-level SCI.
  • the MCS indication of X where the value of X is less than or equal to the number of bits in the binary representation of the number of MCS items (counted as M) in Table 1.
  • the number of bits of the padding information is greater than 3 (for example, the length of the padding information is 10 bits)
  • the value represented by the consecutive X bits in the value of the padding information can be used as the index of the MCS used by the second-level scheduling signaling, X Less than or equal to 3.
  • the X bits may be the first X bits, the last X bits or the bits located in other positions in the padding information.
  • the position of the X bits in the padding information may be configured by the sending end device, defined through a protocol, or determined in a pre-configured manner.
  • the padding information is "abceeeehig", where a, b, c, e, h, i, and g each represent a bit, and the value of each bit can be 0 or 1, then the bit can be set to "abc The value of "is used as the index of the MCS used by the second-level scheduling signaling.
  • the value of the bit "hig" can also be used as the index of the MCS used by the second-level scheduling signaling.
  • the receiving end device may use the default MCS as the MCS used for the second level of scheduling signaling.
  • the default MCS may be one of one or more MCS shown in Table 1, such as the MCS with an index of 0.
  • the default MCS information can be configured by the sending end device, defined by a protocol, or determined by a pre-configuration method.
  • the default MCS is BPSK and the code rate is 60/1024.
  • Table 1 When the fixed field and the dynamic filling field are used for joint indication, still take Table 1 as an example.
  • MCS-b0 is 1 bit
  • the padding information includes MCS-b1 and MCS-b2, MCS-b1 and MCS-b2 each occupy 1 bit, then use MCS-b2, MCS-b1 and MCS-b0 to jointly indicate the first MCS used for secondary scheduling signaling.
  • the combination of MCS-b2, MCS-b1, and MCS-b0 is "001", which can indicate that the second-level scheduling signaling uses
  • the index of the MCS is "1".
  • the access network device can send a dynamic indication to the terminal 103, and the dynamic indication can be used to indicate that the first information is used to indicate one of the MCS lists.
  • MCS is the MCS adopted by the second-level scheduling signaling.
  • the terminal 103 may send the first information to the terminal 104 to indicate the MCS adopted by the second-level scheduling signaling.
  • the communication method provided in the embodiment of the present application may include the following steps shown in FIG. 4:
  • the access network device sends a dynamic indication to the terminal 103, where the dynamic indication is used to indicate that one MCS of the one or more MCSs shown in the MCS list is indicated by the first information as the MCS adopted by the second-level scheduling signaling.
  • the access network device may also configure the MCS list to the terminal 103 and/or the terminal 104.
  • the terminal 103 sends the first-level SCI and the second-level SCI to the terminal 104, and the first-level SCI and the second-level SCI are used to schedule SL data between the terminal 103 and the terminal 104.
  • the first level SCI may include padding information, and the padding information is used to indicate one of the one or more MCS described in Table 1.
  • the terminal 104 receives the first level of SCI.
  • S203 The terminal 104 judges whether the first-level SCI contains padding information.
  • S204 is executed; otherwise, if the terminal 104 determines that the first-level SCI does not include padding information, then S205 is executed.
  • the terminal 104 determines, according to the padding information, one MCS of the one or more MCSs as the MCS adopted by the second-level SCI.
  • the terminal 104 determines the default MCS as the MCS adopted by the second-level SCI. Thereafter, the terminal 104 may receive the second-level SCI according to the MCS adopted by the second-level SCI.
  • the default MCS information may be configured by the access network device to the terminal 103 and/or the terminal 104, or defined by a protocol, or pre-configured in the terminal 103 and/or the terminal 104.
  • the sending end device may also send a first MCS indication to the receiving end device, the first MCS indication and the first indication (such as padding in the first-level scheduling signaling).
  • Information can be used to determine that one MCS in the MCS list is the MCS used by the data transmitted between the sending end device and the receiving end device (hereinafter referred to as the MCS used for data), so that a flexible indication of the MCS used by the data can be realized.
  • the first MCS indication may be carried in the second-level scheduling signaling.
  • the first MCS indication may be Y-bit information in the second-level scheduling signaling.
  • each MCS in the MCS list can correspond to the MCS index used by the data.
  • the receiving end device receives the first indication from the sending end device and determines the MCS used by the second-level scheduling signaling according to the first indication .
  • the second-level scheduling signaling can be received according to the MCS adopted by the second-level scheduling signaling, and the first MCS indication can be obtained according to the received second-level scheduling signaling.
  • the receiving end device may determine the MCS index adopted by the data according to the first MCS instruction and the first instruction, and use the MCS corresponding to the MCS index adopted by the data as the MCS adopted by the data.
  • the MCS index used by the data may be information with a length of X+Y bits, or in other words, the MCS index used by the data is obtained by a combination of the X bits indicated by the first indication and the Y bits indicated by the first MCS.
  • the MCS list includes 32 items of MCS, so 5 bits of information need to be used to indicate one MCS respectively.
  • the first MCS indication and the combination of the first indication are used to indicate the MCS index adopted by the data.
  • the MCS index used by the data may be “00001”. At this time, the index in the MCS list may be “1” according to Table 3. The MCS of "is determined as the MCS used in the data. For another example, when the first indication is “01” and the first MCS indication is "001”, the MCS index used by the data is "01001”. At this time, the MCS with index "9" in the MCS list can be determined as MCS used in the data.
  • the MCS index used by the data can be calculated according to the following formula:
  • K represents the MCS index used by the data
  • V y represents the decimal value indicated by the first MCS
  • V x represents the decimal value of the first indication
  • X represents the length of the first indication (or X represents the first indication Number of bits).
  • the first indication is set after the first indication to combine the first MCS indication to obtain the MCS index used by the data, or the first MCS indication may be combined after the first MCS indication to obtain the MCS index used by the data.
  • the first indication is "00" and the first MCS indication is "001"
  • the MCS index used by the data is "00100”.
  • K represents the MCS index used by the data
  • V y represents the decimal value indicated by the first MCS
  • V x represents the decimal value indicated by the first MCS
  • Y represents the length indicated by the first MCS (or Y represents the first MCS Number of bits indicated).
  • the communication method provided in the embodiment of the present application may include the following steps as shown in FIG. 5:
  • the terminal 103 sends the first-level SCI and the second-level SCI to the terminal 104, and the first-level SCI and the second-level SCI are used to schedule SL data between the terminal 103 and the terminal 104.
  • the first level SCI carries the first indication
  • the second level SCI carries the first MCS indication.
  • the first indication may be padding information in the first level SCI.
  • the terminal 104 receives the first level of SCI.
  • the terminal 104 determines the MCS adopted by the second-level SCI according to the first instruction.
  • the terminal 104 receives the second-level SCI according to the MCS adopted by the second-level SCI, and obtains the first MCS indication carried by the second-level SCI.
  • the terminal 104 determines the MCS used by the data according to the first instruction and the first MCS instruction.
  • the terminal 104 transmits data according to the MCS adopted by the data.
  • the MCS list may include the correspondence between the MCS and the candidate MCS of the data (hereinafter may be simply referred to as the first correspondence), where the candidate MCS of the data may be used for Determine the MCS used by the data transmitted between the sending end device and the receiving end device (in other words, the MCS used by the data is one of the candidate MCSs).
  • the MCS used in the data may be one of the candidate MCSs of the data.
  • the first information may include indication information of the MCS used by the data, which is used to indicate the MCS used by the data.
  • the receiving end device may determine the MCS corresponding to the MCS used by the data as the second level according to the first correspondence. MCS used for scheduling information.
  • the first information may specifically include a second MCS indication
  • the second MCS indication may include indication information of the MCS used by the data.
  • it may be used to indicate the sending end device and the receiving end from one or more candidate MCSs.
  • the second MCS indication may be the index of the MCS adopted by the data, so that the receiving end device may determine the MCS corresponding to the MCS adopted by the data as the MCS adopted by the second-level scheduling signaling according to the first correspondence relationship.
  • the candidate MCS of one or more data can be represented by the MCS list, that is, the same MCS list can be used to determine the MCS adopted by the data and the MCS adopted by the second-level scheduling signaling at the same time.
  • the MCS list can include one or more MCS information and the MCS information of the second level scheduling information corresponding to the MCS. Among them, one or more MCS can be used as candidate MCS to determine the data used MCS.
  • the MCS information of each second-level scheduling information can be used to indicate the MCS corresponding to a candidate MCS, so that after the MCS adopted by the data is determined, the MCS of the corresponding second-level scheduling information can be determined according to the MCS adopted by the data.
  • the receiving device can determine that the MCS used in the second-level scheduling signaling is Pi/2BPSK, and the code rate is 60/1024.
  • the receiving end device can determine that the index of the MCS used by the second-level scheduling signaling is 0, and further determine the MCS of the cause of 0 as the second-level MCS used for scheduling signaling.
  • the above first correspondence may be embodied as the correspondence between I MCS , Q m , Rx[1024] or R of the MCS in Table 4 and the MCS information of the second level scheduling information.
  • the first correspondence may be configured by the access network device, defined by a protocol, or stored in the sending end device and/or the receiving end device in a pre-configured manner.
  • the access network device defined by a protocol, or stored in the sending end device and/or the receiving end device in a pre-configured manner.
  • the corresponding relationship between the MCS information of the second-level scheduling information and the I MCS can be configured by the access network device to the terminal 103 and the terminal 104, respectively , Q m of MCS, Rx[1024] and R can be defined by a protocol or stored in the terminal 103 and the terminal 104 in a pre-configured manner.
  • the second MCS indication may be carried in the first-level scheduling signaling.
  • the second MCS indication may be indication information used to indicate the MCS used by the data in the first-level scheduling signaling.
  • the communication method provided in the embodiment of the present application may include the following steps as shown in FIG. 6:
  • the terminal 103 sends the first-level SCI and the second-level SCI to the terminal 104, and the first-level SCI and the second-level SCI are used to schedule SL data between the terminal 103 and the terminal 104.
  • the first level SCI carries a second MCS indication
  • the second MCS indication may include indication information of the MCS used by the data.
  • the second MCS indication may be the information used to indicate the MCS adopted by the data in the first level SCI.
  • the terminal 104 receives the first level of SCI.
  • the terminal 104 determines the MCS used by the data according to the second MCS instruction.
  • the terminal 104 determines the MCS adopted by the second-level SCI corresponding to the MCS adopted by the data according to the first correspondence, where the first correspondence is the relationship between one or more candidate MCSs of the data and one or more MCSs.
  • the first correspondence is the relationship between one or more candidate MCSs of the data and one or more MCSs.
  • one or more candidate MCSs of the data include the MCS adopted by the data.
  • the terminal 104 receives the second-level SCI according to the MCS adopted by the second-level SCI.
  • the receiving end device may also determine the index of the MCS used by the second-level scheduling signaling according to the ratio of M to N and the index of the MCS used by the data, where: M is the number of candidate MCSs of the one or more data, and the MCS adopted by the data is one of the candidate MCSs of the one or more data.
  • N may be a positive integer.
  • the value of N can be configured by the sending end device.
  • the network device 102 can configure the value of N to the terminal 101 through signaling, or in the architecture shown in FIG. 2, the terminal 103 can send the terminal 104 to the terminal 104.
  • Configure the value of N in the architecture shown in FIG. 2, the value of N can be configured by the access network device to the terminal 103 and/or the terminal 104.
  • the value of N can also be defined by the protocol or determined by pre-configuration.
  • the value of N may be configured through the indication information.
  • the receiving end device may receive a second indication, which is used to clearly indicate the value of N.
  • the second indication may be sent by the access network device or sent by the sending end device.
  • the value of N may be configured by the access network device or the sending end device through an implicit indication method.
  • the receiving end device may receive a second indication, which may be used to indicate the modulation order Qm, where there is an association between the value of each Qm and the value of N.
  • the first information may include a third MCS indication
  • the third MCS indication is used to indicate the MCS adopted by the data from one or more candidate MCSs of the data, for example, the third MCS indication is data The index of the adopted MCS.
  • the candidate MCS of one or more data can be represented by the MCS list.
  • the receiving end device can determine the MCS used by the second-level scheduling signaling according to the number M of MCS in the MCS list, the index of the MCS used by the data, and the parameter N. Index, and determine the MCS used by the second-level scheduling signaling from Table 5 according to the index.
  • the index of the MCS used by the second-level scheduling signaling can be calculated according to the following formula:
  • mcs_index_2 nd XCI floor(mcs_index_date/(ceiling(M/N)) (formula 3)
  • mcs_index_2 nd XCI represents the index of the MCS used by the second-level scheduling signaling
  • mcs_index_date represents the index of the data
  • ceiling() represents rounding up
  • floor() represents rounding down.
  • the above publicity three can also be correspondingly modified, and the calculation can be performed according to the modified formula. For example, add or subtract a constant n (n is a positive integer) based on the result of the above floor() operation, or ignore the ceiling() operation on the basis of formula 3, etc.
  • the communication method provided in the embodiment of the present application may include the following steps shown in FIG. 7:
  • the terminal 103 sends the first-level SCI and the second-level SCI to the terminal 104, and the first-level SCI and the second-level SCI are used to schedule SL data between the terminal 103 and the terminal 104.
  • the first level SCI carries a third MCS indication
  • the third MCS indication is used to indicate the index of the MCS adopted by the data.
  • the third MCS indication may be the index of the MCS used to indicate the data adopted in the first-level SCI.
  • the terminal 104 receives the first level of SCI.
  • S502 The index of the MCS used by the terminal 104 to obtain data.
  • the terminal 104 determines the index of the MCS used by the second-level SCI according to the index of the MCS used by the data and the ratio of M and N.
  • M is the number of candidate MCS items in one or more candidate MCS
  • M and N are positive integers.
  • N may be indicated by the access network device and/or the terminal 103 through signaling, or may be defined through a protocol or determined through a pre-configuration manner.
  • the terminal 104 receives the second-level SCI according to the MCS adopted by the second-level SCI.
  • the sending end device and the receiving end device may include a hardware structure and/or software module, and the foregoing may be implemented in the form of a hardware structure, a software module, or a hardware structure plus a software module.
  • a hardware structure and/or software module may include a hardware structure and/or software module, and the foregoing may be implemented in the form of a hardware structure, a software module, or a hardware structure plus a software module.
  • Each function Whether a certain function of the above-mentioned functions is executed by a hardware structure, a software module, or a hardware structure plus a software module depends on the specific application and design constraint conditions of the technical solution.
  • a communication device may include a communication module 801 and a processing module 802, and the communication module 801 and the processing module 802 are coupled with each other.
  • the communication device 800 can be used to execute the steps executed by the receiving end device in the above method embodiments.
  • the communication module 801 may be used to support the communication device 800 to communicate.
  • the communication module 801 may have a wireless communication function, such as being able to communicate with other communication devices through wireless communication.
  • the processing module 802 can be used to support the communication device 800 to perform the processing actions of the receiving end device in the foregoing method embodiments, including but not limited to: generating information and messages sent by the communication module 801, and/or performing processing on the signals received by the communication module 801 Demodulation and decoding and so on.
  • the communication module 801 may be used to receive the first information from the sending end device, and the first information may be used to determine the MCS adopted by the second-level scheduling signaling.
  • the processing module 802 may be configured to determine the MCS used by the second-level scheduling signaling from one or more modulation and coding formats MCS according to the first information.
  • the information of one or more MCS may be configured by an access network device, or stored in the receiving end device, and the receiving end device is connected to the access network device.
  • the communication module 801 may also be configured to receive an MCS list from the sending end device, where the MCS list includes information about the one or more MCSs.
  • the first information may include a first indication
  • the first indication is carried in the first-level scheduling signaling
  • the first indication may be used to indicate the second-level scheduling information. Order the index of the MCS used.
  • the first indication may be a fixed field and/or dynamic filling information in the first-level scheduling signaling.
  • the receiving end device may determine the default MCS as the MCS adopted by the second-level scheduling signaling.
  • the information of the default MCS may be stored in the sending end device, or the information of the default MCS may be configured by an access network device, and the receiving end device is connected to the access network device.
  • the processing module 802 may also determine the MCS used by the data according to the first MCS indication received by the communication module 801 from the sending end device and the first indication, so as to perform data transmission according to the MCS used by the data.
  • the first MCS indication may be carried in the second level scheduling signaling.
  • the first information may include indication information of the MCS used in the data. Then, after the communication module 801 receives the first information, the processing module 802 may determine the MCS corresponding to the MCS used by the data as the MCS used by the second-level scheduling signaling according to the first correspondence relationship, where the first corresponding The relationship includes a corresponding relationship between one or more MCS and candidate MCS of the data, and the candidate MCS of the data includes the MCS adopted by the data.
  • the first correspondence relationship may be stored in the receiving end device, or the first correspondence relationship may be sent to the receiving end device by the access network device.
  • the first information may include the index of the MCS used by the data. Then, after the communication module 801 receives the first information, the processing module 802 can determine the index of the MCS used by the second-level scheduling signaling according to the ratio of M to N and the index of the MCS used by the data, where M is The number of the candidate MCS, N is a set value.
  • the first information may include the index of the MCS used by the data.
  • the communication module 801 may also receive a second instruction from the access network device accessed by the transmitting end device or the receiving end device, and the second instruction may be used to indicate the value of N, and the processing module 802 may use the ratio of M to N and the value of The index of the MCS used in the data is used to determine the index of the MCS used in the second-level scheduling signaling, where M is the number of candidate MCSs.
  • the communication device may further include a structure as shown in FIG. 9. It is easy to understand and easy to illustrate.
  • a mobile phone is taken as an example to illustrate the structure of the communication device 900.
  • the communication device 900 may include a processor 901, a memory 902, and a transceiver 903.
  • the above processor 901 may be used to process the communication protocol and communication data, and to control the communication device 900, execute programs, process program data, and so on.
  • the memory 902 may be used to store programs and data, and the processor 901 may execute the method executed by the receiving end device in the embodiment of the present application based on the program.
  • the transceiver 903 may include a radio frequency unit and an antenna.
  • the radio frequency unit can be used for conversion of baseband signals and radio frequency signals and processing of radio frequency signals.
  • the antenna can be used to send and receive radio frequency signals in the form of electromagnetic waves.
  • the radio frequency unit can be regarded as the transceiver 903, and then the communication device 900 can include a processor 901, a memory 902, a transceiver 903, and an antenna at this time.
  • the communication device 900 may further include an input and output device 904, such as a touch screen, a display screen, or a keyboard, etc., which can be used to receive data input by the user and output data to the user. It should be noted that some types of communication devices may not have input and output devices.
  • the above communication module 801 may have the structure shown in the transceiver 903, that is, including a radio frequency unit and an antenna; or, the communication module 801 may include the above radio frequency unit.
  • the above processing module 802 may include a processor 901, or include a processor 901 and a memory 902.
  • the above communication device 900 may also be constituted by a chip.
  • the chip includes a processor 901.
  • the chip may further include a memory 902 and a transceiver 903, wherein any two of the memory 902, the transceiver 903, and the processor 901 can be coupled to each other.
  • the transceiver 903 can be used to execute the steps executed by the communication module 801 described above.
  • the processor 901 calls the program stored in the memory 902 to execute the steps executed by the above processing module 802.
  • a communication device may include a communication module 1001 and a processing module 1002, and the communication module 1001 and the processing module 1002 are coupled with each other.
  • the communication device 1000 can be used to execute the steps executed by the sending end device in the above method embodiments.
  • the communication module 1001 can be used to support the communication device 1000 to communicate, and the communication module 1001 can have a wireless communication function, for example, it can communicate with other communication devices through a wireless communication method.
  • the processing module 1002 can be used to support the communication device 1000 to perform the processing actions of the sending device in the foregoing method embodiment, including but not limited to: generating information and messages sent by the communication module 1001, and/or signals received by the communication module 1001 Perform demodulation and decoding and so on.
  • the communication module 1001 may be used to send first information to the receiving end device, and the first information is used to determine the second level from one or more modulation and coding formats MCS MCS used for scheduling signaling.
  • the communication module 1001 may also send an MCS list to the receiving end device, where the MCS list includes information about the one or more MCSs.
  • the first information may include a first indication, and the first indication is carried in the first-level scheduling signaling.
  • the first indication may be used to indicate the index of the MCS adopted by the second-level scheduling signaling.
  • the first indication may be a fixed field and/or dynamic filling information in the first-level scheduling signaling.
  • the communication module 1001 may also send a first MCS indication to the receiving end device, and the first MCS indication and the first indication are used to determine the MCS used by the data.
  • the first information may include indication information of the MCS used by the data, and the MCS used by the data has a corresponding relationship with the MCS used by the second-level scheduling signaling.
  • the first information may include the index of the MCS used by the data, and the MCS used by the data and the ratio of M to N may be used to determine the index of the MCS used by the second-level scheduling signaling.
  • the index of the MCS where M is the number of the candidate MCS, and N is the set value.
  • the first information may include the index of the MCS used by the data
  • the communication module 1001 may also send a second indication to the receiving end device.
  • the second indication is used to determine the value of N, the MCS used by the data, and
  • the ratio of M to N can be used to determine the index of the MCS used by the second-level scheduling signaling, where M is the number of candidate MCSs, and N is the set value.
  • the communication device 1100 includes one or more remote radio units (RRU) 1110 and one or more baseband units (BBU) (also referred to as digital units, digital units, DU) 1120.
  • RRU remote radio units
  • BBU baseband units
  • the RRU 1110 may be referred to as a communication module, which corresponds to the communication module 1001 in FIG. 10, and is used to perform the above steps performed by the communication module 1001.
  • the RRU 1110 may also be called a transceiver, a transceiver circuit, or a transceiver, etc., and it may include at least one antenna 1111 and a radio frequency unit 1112.
  • the RRU 1110 part is mainly used for sending and receiving of radio frequency signals and conversion of radio frequency signals to baseband signals, for example, for sending resource indications to terminal equipment.
  • the 1120 part of the BBU is mainly used for baseband processing, control of the base station, and so on.
  • the RRU 1110 and the BBU 1120 may be physically set together, or may be physically separated, that is, a distributed base station.
  • the BBU 1120 is the control center of the base station, and may also be referred to as a processing module. It may correspond to the processing module 1002 in FIG. 10 and is used to perform the steps performed by the processing module 1002 above.
  • the BBU 1120 can also be used to perform baseband processing functions, such as channel coding, multiplexing, modulation, and spreading.
  • the BBU 1120 may be used to control the communication apparatus 1100 to execute the operation procedure of the sending end device in the foregoing method embodiment, for example, to generate an RRC message and first information.
  • the BBU 1120 may be composed of one or more single boards, and multiple single boards may jointly support a radio access network with a single access standard (such as an LTE network), or support different access standards. Wireless access network (such as LTE network, 5G network or other networks).
  • the BBU 1120 further includes a memory 1121 and a processor 1122.
  • the memory 1121 is used to store necessary instructions and data.
  • the processor 1122 is used to control the communication device 1100 to perform necessary actions, for example, to control the communication device 1100 to execute the operation procedures executed by the CU and/or the CU in the foregoing method embodiments.
  • the above steps executed by the processing module 1002 may be executed by the processor 1122.
  • the memory 1121 and the processor 1122 may serve one or more boards.
  • the memory and the processor can be set separately on each board. It can also be that multiple boards share the same memory and processor.
  • necessary circuits can be provided on each board.
  • the communication device may have a structure as shown in FIG. 9.
  • the transceiver 903 can be used to execute the steps executed by the communication module 1001 described above.
  • the processor 901 can call the program stored in the memory 902 to execute the steps executed by the above processing module 1002.
  • the embodiment of the present application also provides a computer-readable storage medium on which a computer program is stored.
  • the program When the program is executed by a processor, the computer executes the above method embodiment and method implementation. Examples of operations performed by the receiving end device or the sending end device in any possible implementation manner.
  • this application also provides a computer program product, which when invoked and executed by a computer, enables the computer to implement the above method embodiment and any possible implementation of the method embodiment In the operation performed by the receiving device or the sending device.
  • the present application also provides a chip or a chip system, and the chip may include a processor.
  • the chip may also include a memory (or storage module) and/or a transceiver (or communication module), or the chip may be coupled with a memory (or storage module) and/or a transceiver (or communication module), wherein the transceiver ( (Or communication module) can be used to support the chip for wired and/or wireless communication, the memory (or storage module) can be used to store a program, and the processor can call the program to implement any one of the above method embodiments and method embodiments.
  • the chip system may include the above chips, or may include the above chips and other discrete devices, such as a memory (or storage module) and/or a transceiver (or communication module).
  • the present application also provides a communication system, which may include the above receiving end device and/or sending end device.
  • the communication system can be used to implement the operations performed by the receiving end device and the transmitting end device in any one of the foregoing method embodiments and method embodiments.
  • the communication system may have a structure as shown in FIG. 1 or FIG. 2.
  • the transmitting end device can be used to send the first information to the receiving end device, and the receiving end device can be used to receive the first information, and determine the second level scheduling information from one or more modulation and coding formats MCS according to the first information.
  • the adopted MCS be used to realize the flexible configuration of the MCS adopted by the second-level scheduling signaling.
  • the second-level scheduling signaling and the first-level scheduling signaling are used for scheduling data, and the first-level scheduling signaling is sent by the transmitting end device.
  • These computer program instructions can also be stored in a computer-readable memory that can guide a computer or other programmable data processing equipment to work in a specific manner, so that the instructions stored in the computer-readable memory produce an article of manufacture including the instruction device.
  • the device implements the functions specified in one process or multiple processes in the flowchart and/or one block or multiple blocks in the block diagram.
  • These computer program instructions can also be loaded on a computer or other programmable data processing equipment, so that a series of operation steps are executed on the computer or other programmable equipment to produce computer-implemented processing, so as to execute on the computer or other programmable equipment.
  • the instructions provide steps for implementing the functions specified in one process or multiple processes in the flowchart and/or one block or multiple blocks in the block diagram.

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Abstract

本申请公开了一种通信方法及装置，使得发送端设备可向接收端设备发送第一信息，接收端设备可接收第一信息，第一信息可用于第二级调度信令采用的MCS的确定，并根据第一信息从一个或多个调制编码格式MCS中确定第二级调度信令采用的MCS，以实现第二级调度信令采用的MCS的灵活配置。

Description

一种通信方法及装置 技术领域
本申请涉及移动通信技术领域，特别涉及一种通信方法及装置。
背景技术
目前移动通信技术支持通过两级调度信息进行数据调度。应理解，本申请所述调度信息可以是下行控制信息(downlink control information，DCI)、上行控制信息(uplink control information，UCI)或者边链路控制信息(sidelinik control information，SCI)等等。其中，第一级调度信令可用于承载信道检测的信息。接收端设备在接收该第一级调度信令后，可根据信道检测的信息获知发送端设备可能将在哪些传输资源上进行数据的发送，从而接收端设备可对这些传输资源进行避让，以减少干扰。第二级调度信令可用于承载数据调度信息，主要用于接收端对数据的接收和解调，从而接收端设备可根据第一级SCI以及第二级调度信令接收数据。上述第一级调度信令以及第二级调度信令共同用于数据的调度。
然而目前的调度方案中，第二级调度信令的调制编码格式(modulation and coding scheme，MCS)采用固定格式，不支持第二级调度信令的MCS的灵活选择，调度方式不够灵活。
发明内容
本申请提供一种通信方法及装置，用以实现第二级调度信令的调制编码格式(modulation and coding scheme，MCS)的灵活配置。
第一方面，本申请提供一种通信方法。该方法可由接收端设备或接收端设备中的芯片执行。本申请中，接收端设备是指接收第一级调度信令以及第二级调度信令的设备，第一级调度信令以及第二级调度信令共同调度接收端设备发送或接收的数据。
接收端设备可从发送端设备接收第一信息，第一信息可用于第二级调度信令采用的MCS的确定，并根据所述第一信息从一个或多个调制编码格式MCS中确定第二级调度信令采用的MCS。
采用以上方法，可由发送端设备向接收端设备进行第二级调度信令采用的MCS的灵活配置，提高两级数据调度的灵活性。
一个或多个MCS的信息可由接入网设备配置，或可存储于所述接收端设备中。其中，接收端设备接入该接入网设备。此外，所述接收端设备还可从所述发送端设备接收MCS列表，所述MCS列表包括所述一个或多个MCS的信息。
在一种可能的示例中，所述第一信息可包括第一指示，所该一指示承载于所述第一级调度信令。该第一指示用于指示所述第二级调度信令采用的MCS的索引，从而可通过第一级调度信令实现第二级调度信令采用的MCS的明示指示。
示例性的，第一指示可以是第一级调度信令中的固定字段和/或动态填充(padding)信息。
该示例中，若接收端设备确定接收的第一级调度信令中不包括该第一指示，则接收端设备可将默认MCS确定为所述第二级调度信令采用的MCS。该默认MCS的信息可存储 于所述发送端设备，或者，该默认MCS的信息可由接入网设备配置，所述接收端设备接入所述接入网设备。
另外在该示例中，接收端设备还可根据从发送端设备接收的第一MCS指示以及第一指示确定数据采用的MCS，从而根据该数据采用的MCS进行数据的传输。其中，第一MCS指示可承载于第二级调度信令中。
在另一种可能的示例中，第一信息可包括所述数据采用的MCS的指示信息。则在接收第一信息后，接收端设备可根据第一对应关系，将所述数据采用的MCS对应的MCS确定为所述第二级调度信令采用的MCS，其中，第一对应关系包括一个或多个MCS分别与所述数据的备选MCS之间的对应关系，所述数据的备选MCS包括所述数据采用的MCS。所述第一对应关系可存储于所述接收端设备中，或者，所述第一对应关系可由接入网设备发送至所述接收端设备。
在另一种可能的示例中，第一信息可包括所述数据采用的MCS的索引。则在接收第一信息后，接收端设备可根据M与N的比值以及所述数据采用的MCS的索引，确定所述第二级调度信令采用的MCS的索引，其中，M为所述备选MCS的数量，N为设定值。
或者，第一信息可包括所述数据采用的MCS的索引。接收端设备还可从发送端设备或接收端设备接入的接入网设备接收第二指示，该第二指示可用于指示N的取值，则接收端设备可根据M与N的比值以及所述数据采用的MCS的索引，确定所述第二级调度信令采用的MCS的索引，其中，M为所述备选MCS的数量。
第二方面，本申请提供一种通信方法。该方法可由发送端设备或发送端设备中的芯片执行。本申请中，发送端设备是指向接收端设备发送第一级调度信令以及第二级调度信令的设备。
发送端设备可向接收端设备发送第一信息，所述第一信息用于从一个或多个调制编码格式MCS中确定第二级调度信令采用的MCS。
所述发送端设备可向所述接收端设备发送MCS列表，所述MCS列表包括所述一个或多个MCS的信息。
在一种可能的示例中，第一信息可包括第一指示，所述第一指示承载于所述第一级调度信令。所述第一指示可用于指示所述第二级调度信令采用的MCS的索引。该第一指示可以是所述第一级调度信令中的固定字段和/或动态填充信息。
该示例中，还可由发送端设备向所述接收端设备发送第一MCS指示，所述第一MCS指示以及所述第一指示用于确定所述数据采用的MCS。
在另一种可能的示例中，所述第一信息可包括所述数据采用的MCS的指示信息，所述数据采用的MCS与所述第二级调度信令采用的MCS存在对应关系。
在另一种可能的示例中，所述第一信息可包括所述数据采用的MCS的索引，所述数据采用的MCS以及M与N的比值可用于确定所述第二级调度信令采用的MCS的索引，其中，M为所述备选MCS的数量，N为设定值。
此外，所述第一信息可包括所述数据采用的MCS的索引，发送端设备还可向接收端设备发送第二指示，第二指示用于确定N的取值，所述数据采用的MCS以及M与N的比值可用于确定所述第二级调度信令采用的MCS的索引，其中，M为所述备选MCS的数量，N为设定值。
第三方面，本申请实施例提供一种通信装置。该通信装置可用于执行上述第一方面或 第一方面的任一可能的设计中由接收端设备执行的步骤。该通信装置可通过硬件结构、软件模块、或硬件结构加软件模块的形式来实现上述各方法中的各功能或步骤或操作。比如，在通信装置中可以设置与上述各方法中的功能或步骤或操作相对应的功能模块来支持所述接收端设备执行上述方法。
在通过软件模块实现第三方面所示通信装置时，该通信装置可包括相互耦合的通信模块以及处理模块，其中，通信模块可用于支持通信装置进行通信，处理模块可用于通信装置执行处理操作，如生成需要发送的信息/消息，或对接收的信号进行处理以得到信息/消息。
以上通信模块可用于执行第一方面和/或第一方面任意可能的设计中接收端设备的发送和/或接收的动作，如用于执行接收端设备向发送端设备发送信息、消息、信令或数据的动作，或用于执行从发送端设备接收信息、消息、信令或数据的动作。和/或，处理模块可用于执行第一方面和/或第一方面任意可能的设计中接收端设备的处理动作，比如，用于控制通信模块进行信息、消息或信令的接收和或发送，以及信息的存储等操作，又如，用于从一个或多个MCS中确定第二级调度信令采用的MCS，再比如，用于确定第一级调度信令中是否包含第一指示。
示例性的，通信模块可用于从发送端设备接收第一信息，第一信息可用于第二级调度信令采用的MCS的确定。处理模块可用于根据所述第一信息，从一个或多个调制编码格式MCS中确定第二级调度信令采用的MCS。
一个或多个MCS的信息可由接入网设备配置，或存储于所述接收端设备中，所述接收端设备接入所述接入网设备。
通信模块还可用于从所述发送端设备接收MCS列表，所述MCS列表包括所述一个或多个MCS的信息。
在一种可能的示例中，所述第一信息可包括第一指示，所述第一指示承载于所述第一级调度信令，所述第一指示可用于指示所述第二级调度信令采用的MCS的索引。
示例性的，第一指示可以是第一级调度信令中的固定字段和/或动态填充信息。
该示例中，若处理模块确定接收的第一级调度信令中不包括该第一指示，则接收端设备可将默认MCS确定为所述第二级调度信令采用的MCS。该默认MCS的信息可存储于所述发送端设备，或者，该默认MCS的信息可由接入网设备配置，所述接收端设备接入所述接入网设备。
另外在该示例中，处理模块还可根据通信模块从发送端设备接收的第一MCS指示以及第一指示确定数据采用的MCS，从而根据该数据采用的MCS进行数据的传输。其中，第一MCS指示可承载于第二级调度信令中。
在另一种可能的示例中，第一信息可包括所述数据采用的MCS的指示信息。则在通信模块接收第一信息后，处理模块可根据第一对应关系，将所述数据采用的MCS对应的MCS确定为所述第二级调度信令采用的MCS，其中，第一对应关系包括一个或多个MCS分别与所述数据的备选MCS之间的对应关系，所述数据的备选MCS包括所述数据采用的MCS。所述第一对应关系可存储于所述接收端设备中，或者，所述第一对应关系可由接入网设备发送至所述接收端设备。
在另一种可能的示例中，第一信息可包括所述数据采用的MCS的索引。则在通信模块接收第一信息后，处理模块可根据M与N的比值以及所述数据采用的MCS的索引，确 定所述第二级调度信令采用的MCS的索引，其中，M为所述备选MCS的数量，N为设定值。
或者，第一信息可包括所述数据采用的MCS的索引。通信模块还可从发送端设备或接收端设备接入的接入网设备接收第二指示，该第二指示可用于指示N的取值，则处理模块可根据M与N的比值以及所述数据采用的MCS的索引，确定所述第二级调度信令采用的MCS的索引，其中，M为所述备选MCS的数量。
在通过硬件组件实现第三方面所示通信装置时，该通信装置可包括处理器，用于执行上述第一方面和/或第一方面的任意可能的设计中由接收端设备执行的步骤。所述通信装置还可包括存储器。其中，存储器可用于存储指令(或称程序、计算机程序)，以便处理器从所述存储器中调用并运行所述指令，以执行上述第一方面和/或第以方面的任意可能的设计中由接收端设备执行的步骤。该通信装置还可包括收发器，用于通信装置进行通信。
示例性的，收发器可用于执行第一方面和/或第一方面任意可能的设计中接收端设备执行的发送和/或接收的动作，如用于执行接收端设备向发送端设备发送信息、消息、信令或数据的动作，或用于执行从发送端设备接收信息、消息、信令或数据的动作。和/或，处理器可用于执行第一方面和/或第一方面任意可能的设计中接收端设备的处理动作，如用于控制收发器进行信息、消息或信令的接收和或发送，以及控制存储器进行信息的存储等。具体的，收发器可用于执行由以上第三方面所述通信模块执行的步骤。处理器可用于执行由以上第三方面所述处理模块执行的步骤。
第四方面，本申请实施例提供一种通信装置。该通信装置可用于执行上述第一方面或第一方面的任一可能的设计中由发送端设备执行的步骤。该通信装置可通过硬件结构、软件模块、或硬件结构加软件模块的形式来实现上述各方法中的各功能或步骤或操作。比如，在通信装置中可以设置与上述各方法中的功能或步骤或操作相对应的功能模块来支持所述发送端设备执行上述方法。
在通过软件模块实现第四方面所示通信装置时，该通信装置可包括相互耦合的通信模块以及处理模块，其中，通信模块可用于支持通信装置进行通信，处理模块可用于通信装置执行处理操作，如生成需要发送的信息/消息，或对接收的信号进行处理以得到信息/消息。
以上通信模块可用于执行第二方面和/或第二方面任意可能的设计中发送端设备的发送和/或接收的动作，如用于发送接收端设备向接收端设备发送信息、消息、信令或数据的动作。和/或，处理模块可用于执行第二方面和/或第二方面任意可能的设计中发送端设备的处理动作，比如，用于控制通信模块进行信息、消息或信令的接收和或发送，以及信息的存储等操作。
示例性的，通信模块可用于向接收端设备发送第一信息，所述第一信息用于从一个或多个调制编码格式MCS中确定第二级调度信令采用的MCS。
所述通信模块还可向所述接收端设备发送MCS列表，所述MCS列表包括所述一个或多个MCS的信息。
在一种可能的示例中，第一信息可包括第一指示，所述第一指示承载于所述第一级调度信令。所述第一指示可用于指示所述第二级调度信令采用的MCS的索引。该第一指示可以是所述第一级调度信令中的固定字段和/或动态填充信息。
该示例中，还可由该通信模块向所述接收端设备发送第一MCS指示，所述第一MCS 指示以及所述第一指示用于确定所述数据采用的MCS。
在另一种可能的示例中，所述第一信息可包括所述数据采用的MCS的指示信息，所述数据采用的MCS与所述第二级调度信令采用的MCS存在对应关系。
在另一种可能的示例中，所述第一信息可包括所述数据采用的MCS的索引，所述数据采用的MCS以及M与N的比值可用于确定所述第二级调度信令采用的MCS的索引，其中，M为所述备选MCS的数量，N为设定值。
此外，所述第一信息可包括所述数据采用的MCS的索引，通信模块还可向接收端设备发送第二指示，第二指示用于确定N的取值，所述数据采用的MCS以及M与N的比值可用于确定所述第二级调度信令采用的MCS的索引，其中，M为所述备选MCS的数量，N为设定值。
在通过硬件组件实现第四方面所示通信装置时，该通信装置可包括处理器，用于执行上述第二方面和/或第二方面的任意可能的设计中由发送端设备执行的步骤。所述通信装置还可包括存储器。其中，存储器可用于存储指令，处理器可用于从所述存储器中调用并运行所述指令，以执行上述第二方面和/或第二方面的任意可能的设计中由发送端设备执行的步骤。该通信装置还可包括收发器，用于通信装置进行通信。
示例性的，收发器可用于执行第二方面和/或第二方面任意可能的设计中发送端设备的发送和/或接收的动作，如用于执行发送端设备向接收端设备发送信息、消息、信令或数据的动作，或用于执行从接收端设备接收信息、消息、信令或数据的动作。和/或，处理器可用于执行第二方面和/或第二方面任意可能的设计中发送端设备的处理动作，如用于控制收发器进行信息、消息或信令的接收和或发送，以及控制存储器进行信息的存储等。具体的，收发器可用于执行由以上第四方面所述通信模块执行的步骤。处理器可用于执行由以上第四方面所述处理模块执行的步骤。
第五方面，本申请提供一种通信系统，该通信系统可以包括第三方面所示的通信装置以及第四方面所示的通信装置。其中，第三方面所示的通信装置可由软件模块和/或硬件组件构成。第四方面所示的通信装置可由软件模块和/或硬件组件构成。
以第三方面所示的通信装置为接收端设备、第四方面所示的通信装置为发送端设备为例，该通信系统中，发送端设备可用于向接收端设备发送第一信息，接收端设备可用于接收第一信息，并根据第一信息从一个或多个调制编码格式MCS中确定第二级调度信令采用的MCS，以实现第二级调度信令采用的MCS的灵活配置。其中，所述第二级调度信令与第一级调度信令用于调度数据，所述第一级调度信令由所述发送端设备发送。
第六方面，本申请提供一种计算机存储介质，所述计算机存储介质中存储有指令，当其在计算机上被调用执行时，使得计算机执行上述第一方面或第一方面的任意一种可能的设计，或者第二方面或第二方面的任意一种可能的设计中所述的方法。
第七方面，本申请提供一种计算机程序产品，该计算机程序产品可包含指令，当所述计算机程序产品在计算机上运行时使得计算机执行上述第一方面或第一方面的任意一种可能的设计，或者第二方面或第二方面的任意一种可能的设计中所述的方法。
第八方面，本申请提供一种芯片和/或包含芯片的芯片系统，该芯片可包括处理器。该芯片还可以包括存储器(或存储模块)和/或收发器(或通信模块)。该芯片可用于执行上述第一方面或第一方面的任意一种可能的设计，或者第二方面或第二方面的任意一种可能的设计中所述的方法。该芯片系统可以由上述芯片构成，也可以包含上述芯片和其他分立 器件，如存储器(或存储模块)和/或收发器(或通信模块)。
上述第二方面至第八方面及其可能的设计中的有益效果可以参考对第一方面及第一方面的可能的设计中所述方法的有益效果的描述。
附图说明
图1为本申请实施例提供的一种无线通信系统的架构示意图；
图2为本申请实施例提供的另一种无线通信系统的架构示意图；
图3为本申请实施例提供的一种通信方法的流程示意图；
图4为本申请实施例提供的另一种通信方法的流程示意图；
图5为本申请实施例提供的另一种通信方法的流程示意图；
图6为本申请实施例提供的另一种通信方法的流程示意图；
图7为本申请实施例提供的另一种通信方法的流程示意图；
图8为本申请实施例提供的一种通信装置的结构示意图；
图9为本申请实施例提供的另一种通信装置的结构示意图；
图10为本申请实施例提供的另一种通信装置的结构示意图；
图11为本申请实施例提供的另一种通信装置的结构示意图。
具体实施方式
本申请实施例提供的通信方法可应用于无线通信系统，该无线通信系统可以包括发送端设备以及接收端设备，其中，发送端设备通过两级调度信息进行接收端设备的数据调度。具体的，发送端设备可通过第一级调度信令以及第二级调度信令调度数据，该数据可包括由发送端设备向接收端设备发送的数据和/或由接收端设备向发送端设备发送的数据。
其中，第一级调度信令主要用于承载信道检测的信息，以便接收端设备获知哪些SL资源上可进行数据的传输。第二级调度信令主要用于承载数据调度信息，用于接收端对数据的接收和解调，数据调度信息例如混合自动重传请求(hybrid automatic repeat request，HARQ)信息，比如HARQ进程的进程号，重传/新传标识等等。
应理解，以上无线通信系统既可适用于低频场景(sub 6G)，也可适用于高频场景(above6G)。无线通信系统的应用场景包括但不限于长期演进(long term evolution，LTE)系统、LTE频分双工(frequency division duplex，FDD)系统、LTE时分双工(time division duplex，TDD)、通用移动通信系统(universal mobile telecommunication system，UMTS)、全球互联微波接入(worldwide interoperability for microwave access，WiMAX)通信系统、未来的第五代系统、新无线(new radio，NR)通信系统或未来的演进的公共陆地移动网络(public land mobile network，PLMN)系统等。
如图1所示，在该无线通信系统的一种可能的示例中，无线通信系统可包括终端101以及网络设备102。其中，网络设备102可作为发送端设备，终端101可作为接收端设备。
以上所示终端101可以是用户设备(user equipment，UE)、终端(terminal)、接入终端、终端单元、终端站、移动台(mobile station，MS)、远方站、远程终端、移动终端(mobile terminal)、无线通信设备、终端代理或终端设备等。该终端101可具备无线收发功能，其能够与一个或多个通信系统的一个或多个网络设备进行通信(如无线通信)，并接受网络设 备提供的网络服务，这里的网络设备包括但不限于图示网络设备102。
其中，终端101可以是蜂窝电话、无绳电话、会话启动协议(session initiation protocol，SIP)电话、无线本地环路(wireless local loop，WLL)站、个人数字处理(personal digital assistant，PDA)设备、具有无线通信功能的手持设备、计算设备或连接到无线调制解调器的其它处理设备、车载设备、可穿戴设备、未来5G网络中的终端设备或者未来演进的PLMN网络中的终端设备等。
另外，终端101可以部署在陆地上，包括室内或室外、手持或车载；终端101也可以部署在水面上(如轮船等)；终端101还可以部署在空中(例如飞机、气球和卫星上等)。所述终端101具体可以是手机(mobile phone)、平板电脑(pad)、带无线收发功能的电脑、虚拟现实(virtual reality，VR)终端、增强现实(augmented reality，AR)终端、工业控制(industrial control)中的无线终端、无人驾驶(self driving)中的无线终端、远程医疗(remote medical)中的无线终端、智能电网(smart grid)中的无线终端、运输安全(transportation safety)中的无线终端、智慧城市(smart city)中的无线终端、智慧家庭(smart home)中的无线终端等。终端101也可以是具有通信模块的通信芯片。
网络设备102可以是接入网设备(或称接入网站点)。其中，接入网设备是指有提供网络接入功能的设备，如无线接入网(radio access network，RAN)基站等等。网络设备102具体可包括基站(base station，BS)，或包括基站以及用于控制基站的无线资源管理设备等。该网络设备102还可包括中继站(中继设备)、接入点以及未来5G网络中的基站、未来演进的PLMN网络中的基站或者NR基站等。网络设备102可以是可穿戴设备或车载设备。网络设备102也可以是具有通信模块的通信芯片。
比如，网络设备102包括但不限于：5G中的下一代基站(g nodeB，gNB)、LTE系统中的演进型节点B(evolved node B，eNB)、无线网络控制器(radio network controller，RNC)、WCDMA系统中的节点B(node B，NB)、CRAN系统下的无线控制器、基站控制器(base station controller，BSC)、GSM系统或CDMA系统中的基站收发台(base transceiver station，BTS)、家庭基站(例如，home evolved nodeB，或home node B，HNB)、基带单元(baseband unit，BBU)、传输点(transmitting and receiving point，TRP)、发射点(transmitting point，TP)或移动交换中心等。
在如图1所示无线通信系统中，网络设备102可通过第一级调度信令以及第二级调度信令调度终端101的数据。其中，第一级调度信令可以是第一级下行控制信息(downlink control information，DCI)或第一级上行控制信息(uplink control information，UCI)，第二级调度信令可以是第二级DCI或第二级UCI。所述第一级DCI以及所述第二级DCI可用于调度由网络设备102向终端101发送的下行数据，该下行数据可承载于物理下行共享信道(physical downlink shared channel，PDSCH)。所述第一级UCI以及所述第二级UCI可用于调度由终端101向网络设备102发送的下行数据，该下行数据可承载于物理上行共享信道(physical uplink shared channel，PUSCH)。
如图2所示，在该无线通信系统的另一种可能的示例中，无线通信系统可包括终端103以及终端104，终端103以及终端104之间可进行SL通信。其中，终端103可作为发送端设备，终端104可作为接收端设备。或者，终端104可作为发送端设备，终端103可作为接收端设备。
在如图2所示无线通信系统中，终端103可通过第一级调度信令以及第二级调度信令 调度终端104的数据。其中，第一级调度信令可以是第一级SCI，第二级调度信令可以是第二SCI，其中，所述第一级SCI以及所述第二级SCI可用于调度由终端103向终端104发送的数据，和/或，用于调度由终端104向终端103发送的数据。终端103与终端104之间传输的数据可承载于物理边链路共享信道(physical sidelink shared channel，PSSCH)。
所述终端103以及终端104可以是用户设备、终端、接入终端、终端单元、终端站、移动台、远方站、远程终端、移动终端、无线通信设备、终端代理或终端设备等，具体可参照以上关于终端101的说明。
示例性的，终端103还可接入接入网设备，从而可由接入网设备配置终端103与终端104之间的SL链路，该SL链路用于终端103与终端104之间的SL通信。该接入网设备可以是RAN基站等设备，具体可参照以上关于网络设备102的说明。应理解，终端104可接入如图2所示的接入网设备，或接入图2未示出的其他接入网设备。
基于以上如图1或如图2所示的无线通信系统，本申请实施例提供一种通信方法，以灵活选择第二级调度信令采用的MCS，以便无线通信系统中的发送端设备以及接收端设备之间根据该第二级调度信令采用的MCS实现数据传输。
本申请实施例提供的通信方法可包括如图3所示的以下步骤：
S101：发送端设备向接收端设备发送第一信息，所述第一信息用于第二级调度信令采用的MCS(后续为简便说明，可简称为第二级调度信令采用的MCS)的确定，其中，第二级调度信令与第一级调度信令共同调度数据，所述第一级调度信令由所述发送端设备发送至接收端设备。
应理解，第二级调度信令与第一级调度信令可用于调度发送端设备与接收端设备之间传输的数据。
S102：接收端设备接收所述第一信息。
S103：接收端设备根据第一信息从一个或多个MCS中确定第二级调度信令采用的MCS。
采用以上方法，可实现第二级调度信令采用的MCS的灵活配置，可以提高数据调度的灵活性。
示例性的，以上发送端设备可以是如图1所示的网络设备102，接收端设备可以是如图1所述的终端101，或者，以上发送端设备可以是如图2所示的网络设备103，接收端设备可以是如图2所述的终端104。
以上一个或多个MCS可由发送端设备向接收端设备配置、由协议定义或者通过预配置的方式确定，从而在发送端设备以及接收端设备就一个或多个MCS的设置达成一致，因此发送端设备以及接入点设备可根据第一信息确定系统的MCS作为第二级调度信令采用的MCS。此外，若采用图2所示架构，一个或多个MCS可由接入网设备向终端103和/或终端104配置。
示例性的，一个或多个MCS可表示为MCS列表，该MCS列表中可携带一个或多个MCS的信息。
如表1所示，MCS的信息可包括MCS索引(index)、调制阶数(modulation order)、目标码率(Target code Rate)或者频谱效率(spectralefficiency)等信息中的任意一种或多种信息。在本申请中，MCS索引可表示为I MCS，调制阶数可表示为Q m，频谱效率可表示为R，目标码率可表示为R x[1024]，即目标码率的取值等于R*1024。
I MCS Q m Rx[1024] R
0 2 120 0.2344
1 2 157 0.3066
2 2 193 0.3770
3 2 251 0.4902
4 2 308 0.6016
5 2 379 0.7402
6 2 449 0.8770
7 2 526 1.0273
表1
应理解，本申请中MCS列表仅仅是一个或多个MCS的表现形式之一，以下为方便说明，可理解为MCS列表用于表示一个或多个MCS。其中，MCS列表是指在发送端设备以及接收端设备配置的生效的MCS列表。其中，发送端设备以及接收端设备可同时维护一个或多个备选MCS列表，对于维护多个备选MCS列表的情形，多个MCS列表中的任意两个备选MCS列表不同时生效。
在实施中，可由发送端设备和/或接收端设备接入的接入网设备通过信令指示多个备选MCS列表中生效的MCS列表。例如，在如图1所示架构中，可由网络设备102向终端101指示生效的MCS列表，在如图2所示的架构中，可由接入网设备向终端103和/或终端104指示生效的MCS列表。或者在如图2所示的架构中，可由终端103向终端104指示生效的MCS列表。以上多个备选MCS列表可采用配置生效的MCS列表时相类似的方式，由接入网设备配置、由协议定义或者通过预配置的方式确定。
进一步的，为了增加第二级调度信令采用的MCS的解调性能，可在表1所示MCS列表的基础上设置第二级MCS的编码率因子，得到如表2所示MCS列表。其中，编码率因子的取值小于1，例如，编码率因子可取1/2、1/3.125或者其他值。
Figure PCTCN2019110899-appb-000001
表2
根据表2，在确定第二级调度信令采用的MCS后，可根据该MCS对应的编码率因子调整该MCS的码率，将调整后的码率作为第二级调度信令采用的MCS的码率。
例如，若第二级的调度信令的MCS为表2中索引为“0”的MCS，由于该MCS的编码率因子为(1/2)，则该第二级的调度信令的MCS的码率R为(1/2)*(120/1024)＝0.1172，该第二级的调度信令的MCS的Q m为表2所示的2。
另外，也可将根据每个MCS的编码率因子调整后的每个MCS的码率配置于表2中，例如，将索引为“0”的MCS的码率R配置为0.1172。
在本申请实施例提供的第一种实现方式中，基于如表1所示的MCS列表，S101中的第一信息可用于指示该MCS列表所述的一个或多个MCS中的一个MCS，例如，第一信 息可通过比特位(bit)表示MCS索引，以指示该MCS为第二级调度信令采用的MCS。
示例性的，第一信息可包括第一指示，该第一指示可承载于第一级调度信令。例如，第一指示为第一级调度信令中的字段，如固定字段，或者动态填充(padding)信息、或者固定字段和动态填充字段联合指示。固定字段是在第一级调度信令中固定包含的字段信息，动态填充信息是原本为了使得定义调度信令终端的所有字段长度之和达到一个预定的数值而增加的填充信息。固定字段和动态填充信息联合是指：当第一级调度信令未包含动态填充信息时，采用固定字段指示，当第一级调度信令包含动态填充信息时，可采用固定字段和填充信息共同指示。
在一种具体的实例中，当padding信息的比特数目为小于等于表1中MCS项数(计为M)的二进制表示的bit数(即log2(M))时，可取padding信息的数值作为第二级SCI采用的MCS指示。
举例来说，表1所示，表1中MCS的项数为8，即M＝8，log2(M)＝3。当padding信息的比特数小于等于3时，可将该padding信息的数值作为第二级调度信令采用的MCS的索引。比如，若padding为的比特数为1，则padding信息“0”表示MCS索引“0”，padding信息“1”表示MCS索引“1”。又比如，若padding为的比特数为2，则padding信息“00”表示MCS索引“0”，padding信息“01”表示MCS索引“1”，padding信息“10”表示MCS索引“2”，padding信息“11”表示MCS索引“3”。再比如，若padding为的比特数为3，则padding信息“101”表示MCS索引“5”，padding信息“111”表示MCS索引“7”。
在另一种具体的示例中，当padding信息的比特数目为大于表1中MCS项数(计为M)的二进制表示的bit数时，可取padding信息中X比特的数值作为第二级SCI采用的MCS指示，其中，X的取值小于等于表1中MCS项数(计为M)的二进制表示的bit数。
举例来说，如表1所示，表1中MCS的项数为8，即M＝8，log2(M)＝3。当padding信息的比特数大于3时(例如padding信息的长度为10比特)，可将该padding信息的数值中连续的X个比特表示的数值作为第二级调度信令采用的MCS的索引，X小于等于3。其中，该X个比特可以是padding信息中的前X比特、后X个比特或者位于其他位置的比特。该X个比特在padding信息中的位置可由发送端设备配置、通过协议定义或采用预配置的方式确定。
例如，表1中MCS的项数为8，即M＝8，即M＝8，log2(M)＝3。若padding信息为“abceeeehig”，其中，a、b、c、e、h、i、以及g分别表示一个比特位，每个比特位的取值可以是0或1，则可将比特位“abc”的数值作为第二级调度信令采用的MCS的索引。或者，也可将比特位“hig”的数值作为第二级调度信令采用的MCS的索引。
此外，当接收端设备确定第一级调度信令中不包含第一指示(如padding信息)时，接收端设备可采用默认MCS作为第二级调度信令采用的MCS。其中，默认MCS可以是表1所示的一个或多个MCS中的一个，如索引为0的MCS。或者，默认MCS的信息可由发送端设备配置、由协议定义或者通过预配置的方式确定，例如，默认MCS为BPSK，码率为60/1024。
在采用固定字段和动态填充字段联合指示时，仍以表1为例，表1中MCS的项数为8，即M＝8，log2(M)＝3。假设固定字段MCS-b0为1比特，以及padding信息包括MCS-b1以及MCS-b2，MCS-b1以及MCS-b2分别占用1比特，则使用MCS-b2、MCS-b1以及MCS-b0联合指示第二级调度信令采用的MCS。具体的，当MCS-b0＝0、MCS-b1＝0以及 MCS-b2＝1时，MCS-b2、MCS-b1以及MCS-b0的组合即“001”，可表示第二级调度信令采用的MCS的索引“1”。
在以上第一种实现方式中，若采用如图2所示架构，在S101之前，可由接入网设备向终端103发送动态指示，该动态指示可用于指示采用第一信息指示MCS列表中的一个MCS为第二级调度信令采用的MCS。在接收该动态指示之后，终端103可向终端104发送第一信息以指示第二级调度信令采用的MCS。
以如图2所述架构为例，在第一种实现方式中，本申请实施例提供的通信方法可包括图4所示以下步骤：
S201：接入网设备向终端103发送动态指示，该动态指示用于指示采用第一信息指示MCS列表所示的一个或多个MCS中的一个MCS为第二级调度信令采用的MCS。
示例性的，接入网设备还可向终端103和/或终端104配置该MCS列表。
S202：终端103向终端104发送第一级SCI以及第二级SCI，第一级SCI以及第二级SCI用于调度终端103与终端104之间的SL数据。
示例性的，第一级SCI可包括padding信息，padding信息用于指示表1所述的一个或多个MCS中的一个MCS。
相应地，终端104接收第一级SCI。
S203：终端104判断第一级SCI是否包含padding信息。
若终端104判断第一级SCI包括padding信息，则执行S204；否则，若终端104判断第一级SCI不包括padding信息，则执行S205。
S204：终端104根据padding信息确定一个或多个MCS中的一个MCS为第二级SCI采用的MCS。
S205：终端104将默认MCS确定为第二级SCI采用的MCS。此后，终端104可根据第二级SCI采用的MCS接收第二级SCI。
示例性的，默认MCS的信息可由接入网设备向终端103和/或终端104配置，或由协议定义，或预配置于终端103和/或终端104中。
在本申请实施例提供的第二种实现方式中，发送端设备还可向接收端设备发送第一MCS指示，该第一MCS指示以及上述第一指示(如第一级调度信令中的padding信息)可用于确定MCS列表中的一个MCS为发送端设备与接收端设备之间传输的数据采用的MCS(以下简称为数据采用的MCS)，从而可实现数据采用的MCS的灵活指示。其中，第一MCS指示可承载于第二级调度信令中，例如，第一MCS指示可以是第二级调度信令中长度为Y比特的信息。
下面，结合表3介绍根据第一MCS指示以及第一指示确定数据采用的MCS的方式。
如表3所示，MCS列表中的每一个MCS可分别对应数据采用的MCS索引，当接收端设备从发送端设备接收第一指示并根据第一指示确定第二级调度信令采用的MCS后，可根据第二级调度信令采用的MCS进行第二级调度信令的接收，并根据接收的第二级调度信令获取第一MCS指示。此后，接收端设备可根据第一MCS指示以及第一指示确定数据采用的MCS索引，并将数据采用的MCS索引对应的MCS作为数据采用的MCS。示例性的，数据采用的MCS索引可以是长度为X+Y比特的信息，或者说，数据采用的MCS索引由第一指示的X比特以及第一MCS指示的Y比特组合得到。
Figure PCTCN2019110899-appb-000002
表3
如表3所示，MCS列表包括32项MCS，因此需要通过5比特的信息分别指示一个MCS。其中，可设置第一MCS指示的长度为2比特，即Y＝2，以及设置第一指示的长度为3比特，即X＝3。换句话说，第一MCS指示以及第一指示的组合用于表示数据采用的MCS索引。
示例性的，当第一指示为“00”，且第一MCS指示为“001”时，数据采用的MCS索引可以为“00001”，此时，可根据表3将MCS列表中索引为“1”的MCS确定为数据采用的MCS。再比如，当第一指示为“01”，且第一MCS指示为“001”时，数据采用的MCS索引为“01001”，此时，可将MCS列表中索引为“9”的MCS确定为数据采用的MCS。
或者，可根据以下公式计算数据采用的MCS索引：
K＝V y*(2^X)+V x(公式一)；
其中，K表示数据采用的MCS索引，V y表示第一MCS指示的十进制取值，V x表示 第一指示的十进制取值，X表示第一指示的长度(或者说，X表示第一指示的比特数目)。
例如，当X＝3时，若V y＝0，以及V x＝7，则表示数据采用的MCS索引为0*8+7＝7。
应理解，以上举例中设定在第一指示之后组合第一MCS指示得到数据采用的MCS索引，也可以在第一MCS指示之后组合第一指示得到数据采用的MCS索引。此时，若第一指示为“00”，且第一MCS指示为“001”，则数据采用的MCS索引为“00100”。
或者，若采用公式计算数据采用的MCS索引，则可将公式替换为以下公式二：
K＝V x*(2^Y)+V y(公式二)；
其中，K表示数据采用的MCS索引，V y表示第一MCS指示的十进制取值，V x表示第一指示的十进制取值，Y表示第一MCS指示的长度(或者说，Y表示第一MCS指示的比特数目)。
以如图2所述架构为例，在以上第二种实现方式中，本申请实施例提供的通信方法可包括如图5所示以下步骤：
S301：终端103向终端104发送第一级SCI以及第二级SCI，第一级SCI以及第二级SCI用于调度终端103与终端104之间的SL数据。其中，该第一级SCI携带第一指示，该第二级SCI携带第一MCS指示。
示例性的，第一指示可以是第一级SCI中的padding信息。
相应地，终端104接收第一级SCI。
S302：终端104根据第一指示确定第二级SCI采用的MCS。
S303：终端104根据第二级SCI采用的MCS接收第二级SCI，获取第二级SCI携带的第一MCS指示。
S304：终端104根据第一指示以及第一MCS指示确定数据采用的MCS。
S305：终端104根据数据采用的MCS进行数据的传输。
在本申请实施例提供的第三种实现方式中，MCS列表可包括MCS与数据的备选MCS之间的对应关系(以下可简称为第一对应关系)，其中，数据的备选MCS可用于确定发送端设备与接收端设备之间传输的数据采用的MCS(或者说，数据采用的MCS为备选MCS中的一个)。该数据采用的MCS可以是数据的备选MCS中的一个MCS。该示例中，第一信息可包括数据采用的MCS的指示信息，用于指示数据采用的MCS，接收端设备可根据第一对应关系，将该数据采用的MCS所对应的MCS确定为第二级调度信息采用的MCS。
该示例中，第一信息具体可包括第二MCS指示，该第二MCS指示可包括数据采用的MCS的指示信息，例如，可用于从一个或多个备选MCS中指示发送端设备与接收端设备之间传输的数据采用的MCS。举例来说，第二MCS指示可以是数据采用的MCS的索引，从而接收端设备可根据第一对应关系，将该数据采用的MCS对应的MCS确定为第二级调度信令采用的MCS。其中，一个或多个数据的备选MCS可由MCS列表表示，也就是说，同一个MCS列表可同时用于确定数据采用的MCS以及用于确定第二级调度信令采用的MCS。
如表4所示，MCS列表可包括一个或多个MCS的信息以及MCS对应的第二级调度信息的MCS的信息，其中，一个或多个MCS可作为备选MCS，用于确定数据采用的MCS。每个第二级调度信息的MCS信息可用于表示一个备选MCS对应的MCS，从而在确定数据采用的MCS之后，可根据该数据采用的MCS确定对应的第二级调度信息的MCS。
Figure PCTCN2019110899-appb-000003
表4
如表4所示，当数据采用的MCS为索引为“0”的MCS，则接收端设备可确定第二级调度信令采用的MCS为Pi/2BPSK，码率为60/1024。
当数据采用的MCS为表4中索引为“2”的MCS，则接收端设备可确定第二级调度信令采用的MCS的索引为0，进一步可将所因为0的MCS确定为第二级调度信令采用的MCS。
应理解，以上第一对应关系可体现为表4中MCS的I MCS、Q m、Rx[1024]或者R与第二级调度信息的MCS信息之间的对应关系。其中，第一对应关系可由接入网设备配置、由协议定义或者通过预配置的方式存储在发送端设备和/或接收端设备。在一种可能的示例中，图2所示架构中，可由接入网设备向终端103以及终端104分别配置第二级调度信息的MCS信息与I MCS之间的对应关系，MCS的Q m、Rx[1024]以及R可由协议定义或者通过预配置的方式存储在终端103以及终端104。
第三种实现方式中，第二MCS指示可承载于第一级调度信令中。具体的，第二MCS指示可以是第一级调度信令中用于指示数据采用的MCS的指示信息。
以如图2所述架构为例，在以上第三种实现方式中，本申请实施例提供的通信方法可包括如图6以下步骤：
S401：终端103向终端104发送第一级SCI以及第二级SCI，第一级SCI以及第二级SCI用于调度终端103与终端104之间的SL数据。其中，该第一级SCI携带第二MCS指示，该第二MCS指示可包括数据采用的MCS的指示信息。
示例性的，第二MCS指示可以是第一级SCI中用于指示数据采用的MCS的信息。
相应地，终端104接收第一级SCI。
S402：终端104根据第二MCS指示确定数据采用的MCS。
S403：终端104根据第一对应关系确定该数据采用的MCS对应的第二级SCI采用的MCS，其中，第一对应关系为数据的一个或多个备选MCS与一个或多个MCS之间的对应关系，数据的一个或多个备选MCS包括数据采用的MCS。
应理解，第一对应关系可通过MCS表格体现，例如表4所示。
S404：终端104根据第二级SCI采用的MCS接收第二级SCI。
在本申请实施例提供的第四种实现方式中，接收端设备还可根据M与N的比值以及 数据采用的MCS的索引，确定所述第二级调度信令采用的MCS的索引，其中，M为所述一个或多个数据的备选MCS的数量，该数据采用的MCS为一个或多个数据的备选MCS中的一个。
示例性的，N可以是正整数。N的取值可由发送端设备配置，例如在图1所述架构中，可由网络设备102通过信令向终端101配置N的取值，或者在图2所示架构中，可由终端103向终端104配置N的取值。另外在图2所示架构中，可由接入网设备向终端103和/或终端104配置N的取值。另外，N的取值也可由协议定义或通过预配置的方式确定。
举例来说，可通过指示信息配置N的取值，例如，接收端设备可接收第二指示，该第二指示用于明示指示N的取值。第二指示可由接入网设备发送或由发送端设备发送。或者，可由接入网设备或发送端设备通过隐式指示方式配置N的取值。比如，接收端设备可接收第二指示，该第二指示可用于指示调制阶数Qm，其中，每个Qm的取值与N的取值之间存在关联，例如当前生效的MCS列表如表1所示，该MCS列表中Qm＝2的MCS的索引为“0”至“9”，因此当第二指示用于配置Qm＝2时，N的取值可设置为10。
在第四种实现方式中，第一信息可包括第三MCS指示，该第三MCS指示用于从一个或多个数据的备选MCS中指示数据采用的MCS，例如，第三MCS指示为数据采用的MCS的索引。其中，一个或多个数据的备选MCS可由MCS列表表示。
如表5所示，MCS列表可包括一个或多个MCS的信息。其中，一个或多个MCS可作为备选MCS，用于确定数据采用的MCS。
Figure PCTCN2019110899-appb-000004
表5
在根据例如表5所示的MCS列表确定数据采用的MCS后，接收端设备可根据MCS列表中MCS的数量M、数据采用的MCS的索引以及参数N确定第二级调度信令采用的MCS的索引，并根据该索引从表5中确定第二级调度信令采用的MCS。
在一种可能的示例中，可根据以下公式计算第二级调度信令采用的MCS的索引：
mcs_index_2 ndXCI＝floor(mcs_index_date/(ceiling(M/N))(公式三)
其中，mcs_index_2 ndXCI表示第二级调度信令采用的MCS的索引，mcs_index_date表示数据的索引，ceiling()表示向上取整，floor()表示向下取整。
举例来说，当MCS列表采用表5所示的MCS列表时，若第三MCS指示的数据采用的MCS的索引为5，则根据公式三，可确定mcs_index_2 ndXCI＝floor(8/(ceiling(32/4))＝1；若第三MCS指示的数据采用的MCS的索引为31，则根据公式三，可确定mcs_index_2 ndXCI ＝floor(31/(ceiling(32/4))＝3。
应理解，在计算第二级调度信令采用的MCS的索引时，也可对以上公示三进行相应的变形，并根据变形后的公式进行计算。例如，在以上floor()运算后的结果基础上与某个常数n(n为正整数)进行加法或减法运算，或在公式三的基础上忽略进行ceiling()运算等等。
以如图2所述架构为例，在以上第四种实现方式中，本申请实施例提供的通信方法可包括图7所示的以下步骤：
S501：终端103向终端104发送第一级SCI以及第二级SCI，第一级SCI以及第二级SCI用于调度终端103与终端104之间的SL数据。其中，该第一级SCI携带第三MCS指示，该第三MCS指示用于指示数据采用的MCS的索引。
示例性的，第三MCS指示可以是第一级SCI中用于指示数据采用的MCS的索引。
相应地，终端104接收第一级SCI。
S502：终端104获取数据采用的MCS的索引。
S503：终端104根据数据采用的MCS的索引以及M、N的比值确定第二级SCI采用的MCS的索引。
其中，M为一个或多个备选MCS中备选MCS的项数，M、N为正整数。N可由接入网设备和/或终端103通过信令指示，或者可通过协议定义或通过预配置的方式确定。
S504：终端104根据第二级SCI采用的MCS接收第二级SCI。
上述本申请提供的实施例中，从发送端设备以及接收端设备所实现的功能的角度对本申请实施例提供的方法及方法流程进行了介绍。为了实现上述本申请实施例提供的方法中的各功能，发送端设备以及接收端设备可以包括硬件结构和/或软件模块，以硬件结构、软件模块、或硬件结构加软件模块的形式来实现上述各功能。上述各功能中的某个功能以硬件结构、软件模块、还是硬件结构加软件模块的方式来执行，取决于技术方案的特定应用和设计约束条件。
如图8所示，本申请实施例提供的一种通信装置可以包括通信模块801以及处理模块802，以上通信模块801以及处理模块802之间相互耦合。该通信装置800可用于执行以上方法实施例中由接收端设备执行的步骤。该通信模块801可用于支持通信装置800进行通信，通信模块801可具备无线通信功能，例如能够通过无线通信方式与其他通信装置进行通信。处理模块802可用于支持该通信装置800执行上述方法实施例中接收端设备处理动作，包括但不限于：生成由通信模块801发送的信息、消息，和/或，对通信模块801接收的信号进行解调解码等等。
示例性的，通信模块801可用于从发送端设备接收第一信息，第一信息可用于第二级调度信令采用的MCS的确定。处理模块802可用于根据所述第一信息，从一个或多个调制编码格式MCS中确定第二级调度信令采用的MCS。
一个或多个MCS的信息可由接入网设备配置，或存储于所述接收端设备中，所述接收端设备接入所述接入网设备。
通信模块801还可用于从所述发送端设备接收MCS列表，所述MCS列表包括所述一个或多个MCS的信息。
在一种可能的示例中，所述第一信息可包括第一指示，所述第一指示承载于所述第一级调度信令，所述第一指示可用于指示所述第二级调度信令采用的MCS的索引。
示例性的，第一指示可以是第一级调度信令中的固定字段和/或动态填充信息。
该示例中，若处理模块802确定接收的第一级调度信令中不包括该第一指示，则接收端设备可将默认MCS确定为所述第二级调度信令采用的MCS。该默认MCS的信息可存储于所述发送端设备，或者，该默认MCS的信息可由接入网设备配置，所述接收端设备接入所述接入网设备。
另外在该示例中，处理模块802还可根据通信模块801从发送端设备接收的第一MCS指示以及第一指示确定数据采用的MCS，从而根据该数据采用的MCS进行数据的传输。其中，第一MCS指示可承载于第二级调度信令中。
在另一种可能的示例中，第一信息可包括所述数据采用的MCS的指示信息。则在通信模块801接收第一信息后，处理模块802可根据第一对应关系，将所述数据采用的MCS对应的MCS确定为所述第二级调度信令采用的MCS，其中，第一对应关系包括一个或多个MCS分别与所述数据的备选MCS之间的对应关系，所述数据的备选MCS包括所述数据采用的MCS。所述第一对应关系可存储于所述接收端设备中，或者，所述第一对应关系可由接入网设备发送至所述接收端设备。
在另一种可能的示例中，第一信息可包括所述数据采用的MCS的索引。则在通信模块801接收第一信息后，处理模块802可根据M与N的比值以及所述数据采用的MCS的索引，确定所述第二级调度信令采用的MCS的索引，其中，M为所述备选MCS的数量，N为设定值。
或者，第一信息可包括所述数据采用的MCS的索引。通信模块801还可从发送端设备或接收端设备接入的接入网设备接收第二指示，该第二指示可用于指示N的取值，则处理模块802可根据M与N的比值以及所述数据采用的MCS的索引，确定所述第二级调度信令采用的MCS的索引，其中，M为所述备选MCS的数量。
在实现上述接收端设备时，通信装置还可包括如图9所示结构。便于理解和图示方便，图9中，以手机为例说明该通信装置900的结构。如图9所示，通信装置900可包括处理器901、存储器902以及收发器903。
以上处理器901可用于对通信协议以及通信数据进行处理，以及对通信装置900进行控制，执行程序，处理程序的数据等。存储器902可用于存储程序和数据，处理器901可基于该程序执行本申请实施例中由接收端设备执行的方法。
收发器903可包括射频单元以及天线。其中，射频单元可用于基带信号与射频信号的转换以及对射频信号的处理。天线可用于收发电磁波形式的射频信号。另外，也可仅将射频单元视为收发器903，则此时通信装置900可包括处理器901、存储器902、收发器903以及天线。
另外，该通信装置900还可包括输入输出装置904，如触摸屏、显示屏或者键盘等可用于接收用户输入的数据以及对用户输出数据的组件。需要说明的是，有些种类的通信装置可以不具有输入输出装置。
示例性的，以上通信模块801可具备收发器903所示结构，即包括射频单元以及天线；或者，通信模块801可包括以上射频单元。以上处理模块802可包括处理器901，或包括处理器901以及存储器902。
以上通信装置900也可由芯片构成。例如，该芯片包含处理器901。另外，该芯片还可包括存储器902以及收发器903，其中，存储器902、收发器903以及处理器901三者 中，任意两者之间可相互耦合。
在执行本申请实施例所示方法时，该收发器903可用于执行上述通信模块801执行的步骤。以及，由处理器901调用存储器902中存储的程序，执行以上处理模块802所执行的步骤。
如图10所示，本申请实施例提供的一种通信装置可以包括通信模块1001以及处理模块1002，以上通信模块1001以及处理模块1002之间相互耦合。该通信装置1000可用于执行以上方法实施例中由发送端设备执行的步骤。该通信模块1001可用于支持通信装置1000进行通信，通信模块1001可具备无线通信功能，例如能够通过无线通信方式与其他通信装置进行通信。处理模块1002可用于支持该通信装置1000执行上述方法实施例中发送端设备的处理动作，包括但不限于：生成由通信模块1001发送的信息、消息，和/或，对通信模块1001接收的信号进行解调解码等等。
在执行上述方法实施例中由网络设备执行的步骤时，通信模块1001可用于向接收端设备发送第一信息，所述第一信息用于从一个或多个调制编码格式MCS中确定第二级调度信令采用的MCS。
所述通信模块1001还可向所述接收端设备发送MCS列表，所述MCS列表包括所述一个或多个MCS的信息。
在一种可能的示例中，第一信息可包括第一指示，所述第一指示承载于所述第一级调度信令。所述第一指示可用于指示所述第二级调度信令采用的MCS的索引。该第一指示可以是所述第一级调度信令中的固定字段和/或动态填充信息。
该示例中，还可由该通信模块1001向所述接收端设备发送第一MCS指示，所述第一MCS指示以及所述第一指示用于确定所述数据采用的MCS。
在另一种可能的示例中，所述第一信息可包括所述数据采用的MCS的指示信息，所述数据采用的MCS与所述第二级调度信令采用的MCS存在对应关系。
在另一种可能的示例中，所述第一信息可包括所述数据采用的MCS的索引，所述数据采用的MCS以及M与N的比值可用于确定所述第二级调度信令采用的MCS的索引，其中，M为所述备选MCS的数量，N为设定值。
此外，所述第一信息可包括所述数据采用的MCS的索引，通信模块1001还可向接收端设备发送第二指示，第二指示用于确定N的取值，所述数据采用的MCS以及M与N的比值可用于确定所述第二级调度信令采用的MCS的索引，其中，M为所述备选MCS的数量，N为设定值。
另外，当本实施例中的发送端设备为网络设备(如网络设备102)时，该通信装置可以具备如图11所示结构。其中，通信装置1100包括一个或多个远端射频单元(remote radio unit,RRU)1110和一个或多个基带单元(baseband unit，BBU)(也可称为数字单元，digital unit，DU)1120。所述RRU 1110可以称为通信模块，与图10中的通信模块1001对应，用于执行以上由通信模块1001执行的步骤。该RRU 1110还可以称为收发机、收发电路、或者收发器等等，其可以包括至少一个天线1111和射频单元1112。所述RRU 1110部分主要用于射频信号的收发以及射频信号与基带信号的转换，例如用于向终端设备发送资源指示。所述BBU 1120部分主要用于进行基带处理，对基站进行控制等。所述RRU 1110与BBU 1120可以是物理上设置在一起，也可以物理上分离设置的，即分布式基站。
所述BBU 1120为基站的控制中心，也可以称为处理模块，其可以与图10中的处理模 块1002对应，用于执行以上由处理模块1002执行的步骤。BBU 1120还可用于完成基带处理功能，如信道编码，复用，调制，扩频等等。例如所述BBU 1120可以用于控制通信装置1100执行上述方法实施例中关于发送端设备的操作流程，例如，生成RRC消息以及第一信息等。
在一个示例中，所述BBU 1120可以由一个或多个单板构成，多个单板可以共同支持单一接入制式的无线接入网(如LTE网)，也可以分别支持不同接入制式的无线接入网(如LTE网，5G网或其他网)。所述BBU 1120还包括存储器1121和处理器1122。所述存储器1121用以存储必要的指令和数据。所述处理器1122用于控制通信装置1100进行必要的动作，例如用于控制通信装置1100执行上述方法实施例中由CU和/或CU执行的操作流程。
示例性的，可由处理器1122执行以上由处理模块1002执行的步骤。所述存储器1121和处理器1122可以服务于一个或多个单板。也就是说，可以每个单板上单独设置存储器和处理器。也可以是多个单板共用相同的存储器和处理器。此外每个单板上还可以设置有必要的电路。
当本实施例中的发送端设备为终端时，该通信装置可以具备如图9所示结构。以手机为例，该通过图9所示通信装置执行本申请实施例所示方法时，该收发器903可用于执行上述通信模块1001执行的步骤。以及，可由处理器901调用存储器902中存储的程序，执行以上处理模块1002所执行的步骤。
基于与上述方法实施例相同构思，本申请实施例中还提供一种计算机可读存储介质，其上存储有计算机程序，该程序被处理器执行时，使该计算机执行上述方法实施例、方法实施例的任意一种可能的实现方式中由接收端设备或发送端设备执行的操作。
基于与上述方法实施例相同构思，本申请还提供一种计算机程序产品，该计算机程序产品在被计算机调用执行时，可以使得计算机实现上述方法实施例、方法实施例的任意一种可能的实现方式中由接收端设备或发送端设备执行的操作。
基于与上述方法实施例相同构思，本申请还提供一种芯片或芯片系统，该芯片可包括处理器。该芯片还可包括存储器(或存储模块)和/或收发器(或通信模块)，或者，该芯片与存储器(或存储模块)和/或收发器(或通信模块)耦合，其中，收发器(或通信模块)可用于支持该芯片进行有线和/或无线通信，存储器(或存储模块)可用于存储程序，该处理器调用该程序可用于实现上述方法实施例、方法实施例的任意一种可能的实现方式中由接收端设备或发送端设备执行的操作。该芯片系统可包括以上芯片，也可以包含上述芯片和其他分立器件，如存储器(或存储模块)和/或收发器(或通信模块)。
基于与上述方法实施例相同构思，本申请还提供一种通信系统，该通信系统可包括以上接收端设备和/或发送端设备。该通信系统可用于实现上述方法实施例、方法实施例的任意一种可能的实现方式中由接收端设备以及发送端设备执行的操作。示例性的，该通信系统可具有如图1或图2所示结构。
该通信系统中，发送端设备可用于向接收端设备发送第一信息，接收端设备可用于接收第一信息，并根据第一信息从一个或多个调制编码格式MCS中确定第二级调度信令采用的MCS，以实现第二级调度信令采用的MCS的灵活配置。其中，所述第二级调度信令与第一级调度信令用于调度数据，所述第一级调度信令由所述发送端设备发送。
本申请实施例是参照实施例所涉及的方法、装置、和计算机程序产品的流程图和/或方框图来描述的。应理解可由计算机程序指令实现流程图和/或方框图中的每一流程和/ 或方框、以及流程图和/或方框图中的流程和/或方框的结合。可提供这些计算机程序指令到通用计算机、专用计机、嵌入式处理机或其他可编程数据处理设备的处理器以产生一个机器，使得通过计算机或其他可编程数据处理设备的处理器执行的指令产生用于实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能的装置。
这些计算机程序指令也可存储在能引导计算机或其他可编程数据处理设备以特定方式工作的计算机可读存储器中，使得存储在该计算机可读存储器中的指令产生包括指令装置的制造品，该指令装置实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能。
这些计算机程序指令也可装载到计算机或其他可编程数据处理设备上，使得在计算机或其他可编程设备上执行一系列操作步骤以产生计算机实现的处理，从而在计算机或其他可编程设备上执行的指令提供用于实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能的步骤。

Claims (22)

  1. 一种通信方法，其特征在于，包括：
    接收端设备从发送端设备接收第一信息，所述第一信息用于第二级调度信令采用的MCS的确定；
    所述接收端设备根据所述第一信息，从一个或多个调制编码格式MCS中确定第二级调度信令采用的MCS。
  2. 如权利要求1所述的方法，其特征在于，所述一个或多个MCS的信息由接入网设备配置，或存储于所述接收端设备中，所述接收端设备接入所述接入网设备。
  3. 如权利要求1或2所述的方法，其特征在于，所述方法还包括：
    所述接收端设备从所述发送端设备接收MCS列表，所述MCS列表包括所述一个或多个MCS的信息。
  4. 如权利要求1-3中任一所述的方法，其特征在于，所述第一信息包括第一指示，所述第一指示承载于所述第一级调度信令；
    所述第一指示用于指示所述第二级调度信令采用的MCS的索引。
  5. 如权利要求4所述的方法，其特征在于，所述方法还包括：
    所述接收端设备确定所述第一级调度信令中不包括所述第一指示；
    所述接收端设备将默认MCS确定为所述第二级调度信令采用的MCS。
  6. 如权利要求5所述的方法，其特征在于，所述默认MCS的信息存储于所述发送端设备，或者，所述默认MCS的信息由接入网设备配置，所述接收端设备接入所述接入网设备。
  7. 如权利要求4-6中任一所述的方法，其特征在于，所述方法还包括：
    所述接收端设备从所述发送端设备接收第一MCS指示，所述第一MCS指示以及所述第一指示用于确定数据采用的MCS，所述数据由所述第一级调度信令以及所述第二级调度信令调度。
  8. 如权利要求4-7中任一所述的方法，其特征在于，所述第一指示为所述第一级调度信令中的固定字段和/或动态填充信息。
  9. 如权利要求1-3中任一所述的方法，其特征在于，所述第一信息包括数据采用的MCS的指示信息，所述数据由第一级调度信令以及所述第二级调度信令调度；
    所述接收端设备根据所述第一信息，从一个或多个MCS中确定第二级调度信令采用的MCS，包括：
    所述接收端设备根据第一对应关系，将所述数据采用的MCS对应的MCS确定为所述第二级调度信令采用的MCS，所述第一对应关系包括一个或多个MCS分别与所述数据的备选MCS之间的对应关系，所述数据的备选MCS包括所述数据采用的MCS。
  10. 如权利要求9所述的方法，其特征在于，所述第一对应关系存储于所述接收端设备中，或者，所述第一对应关系由接入网设备发送至所述接收端设备，所述接收端设备接入所述接入网设备。
  11. 如权利要求1-3中任一所述的方法，其特征在于，所述第一信息包括数据采用的MCS的索引，所述数据由第一级调度信令以及所述第二级调度信令调度；
    所述接收端设备根据所述第一信息，从一个或多个MCS中确定第二级调度信令采用 的MCS，包括：
    所述接收端设备根据M与N的比值以及所述数据采用的MCS的索引，确定所述第二级调度信令采用的MCS的索引，其中，M为所述备选MCS的数量，N为设定值。
  12. 如权利要求1-3中任一所述的方法，其特征在于，所述第一信息包括数据采用的MCS的索引，所述数据由第一级调度信令以及所述第二级调度信令调度；
    所述方法还包括，所述接收端设备接收第二指示，所述第二指示用于确定N的取值；
    所述接收端设备根据所述第一信息，从一个或多个MCS中确定第二级调度信令采用的MCS，包括：
    所述接收端设备根据M与N的比值以及所述数据采用的MCS的索引，确定所述第二级调度信令采用的MCS的索引，其中，M为所述备选MCS的数量。
  13. 一种通信方法，其特征在于，包括：
    发送端设备向接收端设备发送第一信息，所述第一信息用于从一个或多个调制编码格式MCS中确定第二级调度信令采用的MCS。
  14. 如权利要求13所述的方法，其特征在于，所述方法还包括：
    所述发送端设备向所述接收端设备发送MCS列表，所述MCS列表包括所述一个或多个MCS的信息。
  15. 如权利要求13或14所述的方法，其特征在于，所述第一信息包括第一指示，所述第一指示承载于所述第一级调度信令；
    所述第一指示用于指示所述第二级调度信令采用的MCS的索引。
  16. 如权利要求15所述的方法，其特征在于，所述方法还包括：
    所述发送端设备向所述接收端设备发送第一MCS指示，所述第一MCS指示以及所述第一指示用于确定数据采用的MCS，所述数据由所述第一级调度信令以及所述第二级调度信令调度。
  17. 如权利要求15或16所述的方法，其特征在于，所述第一指示为所述第一级调度信令中的固定字段和/或动态填充信息。
  18. 如权利要求13或14中任一所述的方法，其特征在于，所述第一信息包括数据采用的MCS的指示信息，所述数据采用的MCS与所述第二级调度信令采用的MCS存在对应关系，所述数据由第一级调度信令以及所述第二级调度信令调度。
  19. 如权利要求13或14中任一所述的方法，其特征在于，所述第一信息包括所述数据采用的MCS的索引，所述数据采用的MCS以及M与N的比值用于确定所述第二级调度信令采用的MCS的索引，其中，M为所述备选MCS的数量，N为设定值。
  20. 如权利要求19所述的方法，其特征在于，所述第一信息包括数据采用的MCS的索引，所述数据由第一级调度信令以及所述第二级调度信令调度；
    所述方法还包括：
    所述发送端设备向所述接收端设备发送第二指示，所述第二指示用于确定N的取值；
    所述数据采用的MCS以及M与N的比值用于确定所述第二级调度信令采用的MCS的索引，其中，M为所述备选MCS的数量，N为设定值。
  21. 一种通信装置，其特征在于，包括通信模块以及处理模块，所述通信模块用于所述通信装置的通信，所述处理模块用于基于所述通信模块执行如权利要求1-12中任一所述的方法。
  22. 一种通信装置，其特征在于，包括通信模块以及处理模块，所述通信模块用于所述通信装置的通信，所述处理模块用于基于所述通信模块执行如权利要求13-20中任一所述的方法。
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