WO2021218920A1 - 通信方法和装置 - Google Patents

通信方法和装置 Download PDF

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Publication number
WO2021218920A1
WO2021218920A1 PCT/CN2021/089920 CN2021089920W WO2021218920A1 WO 2021218920 A1 WO2021218920 A1 WO 2021218920A1 CN 2021089920 W CN2021089920 W CN 2021089920W WO 2021218920 A1 WO2021218920 A1 WO 2021218920A1
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WIPO (PCT)
Prior art keywords
information
frequency domain
domain resource
target
terminal device
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PCT/CN2021/089920
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English (en)
French (fr)
Inventor
李锐杰
官磊
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华为技术有限公司
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Publication of WO2021218920A1 publication Critical patent/WO2021218920A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
    • H04L1/0023—Systems modifying transmission characteristics according to link quality, e.g. power backoff characterised by the signalling
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • H04W72/0453—Resources in frequency domain, e.g. a carrier in FDMA

Definitions

  • This application relates to the field of communication, and in particular to communication methods and devices.
  • the data transmission of terminal equipment can be scheduled through network equipment.
  • the network device can schedule the terminal device to perform data transmission through the indication information of the downlink control information (DCI) carried in the physical downlink control channel (PDCCH).
  • DCI downlink control information
  • PDCCH physical downlink control channel
  • the overhead related to DCI may include one or more of modulation and coding scheme (MCS) information, time domain resource information, or frequency domain resource information.
  • MCS modulation and coding scheme
  • time domain resource information time domain resource information
  • frequency domain resource information frequency domain resource information.
  • MCS modulation and coding scheme
  • URLLC ultra-reliable and low-latency communications
  • the embodiments of the present application provide a communication method and device, which can effectively reduce the overhead of the DCI, thereby improving the performance of the communication system.
  • a communication method is provided.
  • the execution subject of the method may be a terminal device or a chip applied to the terminal device.
  • the following describes an example where the execution subject is a terminal device.
  • the terminal device receives the first DCI, where the first DCI may be used to indicate at least one target frequency domain resource set in the at least two candidate frequency domain resource sets, and a predetermined or pre-configured part of the frequency in the at least one target frequency domain resource set
  • the resources include frequency domain resources corresponding to the first frequency domain resource information.
  • the terminal device receives or sends data on the frequency domain resource.
  • the terminal device through a preset or configuration method, it is indicated to the terminal device that part of the resources of the target resource set can be used to receive or send data, so that the size of the target resource set can be flexibly set, compared with the prior art
  • the scheme in which all the resources of the target resource set indicated to the terminal device are used for data transmission can save the overhead of DCI. For example, if there are 10 RBs, the 10 RBs can be divided into 5 groups in the prior art, and the network device needs to use 5 bits of overhead to indicate the 10 RBs to the terminal device through DCI; and the solution of this application can The 10 RBs are divided into 2 groups.
  • the first 2 RBs of one of the groups can be preset or pre-configured by the network device to transmit data to the terminal device. Therefore, the network device can transmit data to the terminal through the first DCI with a 2-bit overhead.
  • the device gives instructions.
  • the frequency domain resources in the target frequency domain resource set are preset or pre-configured by the network device, and there may be multiple configuration methods in different time periods, which can improve the flexibility of the target terminal device in using the frequency domain resources.
  • the method further includes: receiving first TBS information and first information; and determining the first TBS information according to the first TBS information, the first information, and the first frequency domain resource information. Two information; wherein, the first information and the second information are any one of the first MCS information and the first time domain resource information, and the first information and the second information are different.
  • the target terminal device can determine the second information according to the received first TBS information, first information, and first frequency domain resource information. Since the second information is determined by the terminal device itself through multiple pieces of information, it is not necessary
  • the network device uses the DCI to indicate, thereby reducing the overhead of the network device using the DCI to indicate the second information, thereby improving the performance of the communication system.
  • the receiving the first TBS information includes: receiving high-level signaling from a network device, where the high-level signaling includes the first TBS information.
  • the network device can send the first TBS information to the terminal device through semi-statically configured high-level signaling, which is compared with the requirements of the network device in the prior art.
  • MCS information time domain resource information
  • frequency domain resource information to the terminal device through DCI, so that the terminal device determines the solution of the first TBS information according to the multiple pieces of information, thereby further reducing the overhead of the network device.
  • the receiving the first TBS information and the first information includes: receiving a second DCI, where the second DCI includes multiple information blocks, and the multiple information blocks One information block corresponding to the target terminal device, the one information block includes third indication information, the third indication information indicates the first resource block of the target terminal device, and the first resource block includes the first At least one of TBS information, the first MCS information, and the first time domain resource information, or includes the first TBS information, the first MCS information, the first time domain resource information, or the Part of the information in at least one type of information in the first frequency domain resource information; receiving second configuration information, where the second configuration information includes the index of the one information block corresponding to the target terminal device.
  • the second DCI sent by the network device to the target terminal device may include multiple information blocks, and one information block of the multiple information blocks may correspond to the target terminal device, because these multiple information blocks are sent through the first DCI That is, the DCI of multiple terminal devices is jointly coded. Compared with the scheme in which the DCI of each terminal device needs to be coded separately in the prior art, the overhead of the DCI can be saved.
  • a communication method is provided.
  • the execution subject of the method may be a network device or a chip applied to the network device.
  • the following description will be given by taking a network device as the execution subject as an example.
  • the network device sends a first DCI, where the first DCI indicates at least one target frequency domain resource set in at least two candidate frequency domain resource sets, and a predetermined or pre-configured part of the frequency resources in the at least one target frequency domain resource set includes The frequency domain resource corresponding to the first frequency domain resource information; the network device receives or sends data on the frequency domain resource.
  • the beneficial effects of this method can be referred to the first aspect, which will not be repeated here.
  • the method further includes: sending first transport block size TBS information and first information, where the first TBS information and the first information are used to indicate the second information; wherein, The first information and the second information are respectively any one of the first modulation and coding MCS information and the first time domain resource information, and the first information and the second information are different.
  • the beneficial effects of this method can be referred to the first aspect, which will not be repeated here.
  • the sending the first TBS information includes: sending high-layer signaling to the target terminal device, where the high-layer signaling includes the first TBS information.
  • the sending the first TBS information and the first information includes: sending a second DCI, where the second DCI includes multiple information blocks, and among the multiple information blocks One information block corresponding to the target terminal device, the one information block includes third indication information, the third indication information indicates the first resource block of the target terminal device, and the first resource block includes the At least one of the first TBS information and the first information, or includes the first TBS information and part of the information in the at least one of the first information; sending second configuration information, where the second configuration information includes the The index of the one information block corresponding to the target terminal device.
  • the first DCI when the at least one target frequency domain resource information set is the target frequency domain information set, and the target frequency domain information set is preset or The pre-configured frequency domain resources include multiple frequency domain resource configuration modes, the first DCI includes first indication information, and the first indication information indicates a target configuration mode of the frequency domain resources of the target terminal device; and/or, When the at least one target frequency domain resource information set is a plurality of the target frequency domain information sets, and at least one target frequency domain resource information set in the plurality of target frequency domain resource information sets is preset or pre-configured Frequency domain resources include multiple frequency domain resource configuration modes, the first DCI includes second indication information, and the second indication information indicates a target configuration mode of frequency domain resources of the target terminal device, and the target configuration mode belongs to The multiple frequency domain resource configuration methods.
  • the preset or pre-configured frequency domain resources can include multiple frequency domain resource configuration modes, and the indication information in the first DCI can indicate a frequency domain as the target terminal device from multiple frequency domain resource configuration modes.
  • the target configuration mode of the domain resources can improve the flexibility of the target terminal equipment using frequency domain resources.
  • the second information is the first time domain resource information
  • the first time domain resource information and the first length satisfy a first association relationship
  • the first length is determined by the first TBS information, the first MCS information, and the first frequency domain resource information.
  • the first length represents the number of symbols included in the first time domain resource information.
  • the spectral efficiency and the first spectral efficiency in the first MCS information satisfy the second association
  • the first spectrum efficiency is related to the first time domain resource information, the first frequency domain resource information, and the first TBS information.
  • a communication method is provided.
  • the execution subject of the method may be a terminal device or a chip applied to the terminal device.
  • the following describes an example where the execution subject is a terminal device.
  • the terminal device receives first configuration information, where the first configuration information includes a first set of information groups of the target terminal device; the terminal device receives a first DCI, where the first DCI includes multiple target information blocks, and the multiple target information One information block in the block corresponds to the target terminal device, and the one information block includes first indication information.
  • the first indication information is used to activate the first target information group of the target terminal device.
  • the target information group belongs to the first information group set.
  • the first DCI sent by the network device to the target terminal device may include multiple target information blocks, and one information block of the multiple target information blocks may correspond to the target terminal device, that is, multiple terminal devices. Since the multiple target information blocks are sent through the first DCI, the DCI of each terminal device needs to be separately coded compared with the DCI of each terminal device in the prior art, which can save the overhead of the DCI.
  • the method further includes: receiving second configuration information, where the second configuration information includes an index of the one information block corresponding to the target terminal device.
  • the first information group set includes at least one candidate target information group, and the candidate target information group includes first transmission block size TBS information, first modulation and coding MCS information, and first time domain information. At least one of resource information or first frequency domain resource information, or includes any of the first TBS information, the first MCS information, the first time domain resource information, or the first frequency domain resource information Part of at least one type of information.
  • the first information group set includes at least two candidate target information groups, and the first indication information is used to activate the first information group from the at least two candidate target information groups.
  • Target information group since the information in the candidate target information group is configured through the first configuration information, the first indication information can select an information group from the configured information for activation, and the information group includes multiple terminal device information Information, compared with the solution in the prior art that the network device needs to frequently indicate the information block to each terminal device through multiple DCIs, the overhead of the DCI can be further saved.
  • the candidate target information group includes the first TBS information, the first MCS information, and the first time domain resource information
  • the method further includes: receiving a second DCI,
  • the second DCI indicates at least one target frequency domain resource set in at least two candidate frequency domain resource sets, and the frequency domain resource corresponding to the first frequency domain resource information is preset in the at least one target frequency domain resource set Or part of the pre-configured frequency domain resources.
  • the first DCI includes second indication information, and the second indication information indicates a target configuration mode of frequency domain resources of the target terminal device; or, when the at least one target frequency domain
  • the resource information set is a plurality of the target frequency domain information sets, and at least one of the target frequency domain resource information sets in the plurality of target frequency domain resource information sets, the preset or pre-configured frequency domain resources include a variety of frequency domain resources.
  • the first DCI includes third indication information, the third indication information indicates a target configuration mode of frequency domain resources of the target terminal device, and the target configuration mode belongs to the multiple frequency domain resources Configuration method.
  • the preset or pre-configured frequency domain resources can include multiple frequency domain resource configuration methods, and the indication information in the first DCI can indicate a frequency domain as the target terminal device from multiple frequency domain resource configuration methods.
  • the target configuration method of resources can improve the flexibility of the target terminal device using frequency domain resources.
  • the method further includes: receiving fourth indication information, where the fourth indication information instructs the target terminal device to terminate the use of the target resource corresponding to the first target information group.
  • a communication method is provided, and the execution subject of the method may be a network device or a chip applied to the network device.
  • the network device sends first configuration information, where the first configuration information includes a first information group set of the target terminal device; sends first downlink control information DCI, where the first DCI includes multiple target information blocks of multiple terminal devices One of the multiple target information blocks corresponds to the target terminal device, and the one information block includes first indication information, and the first indication information is used to activate the first target of the target terminal device.
  • Information group the first target information group belongs to the first information group set.
  • the method further includes: sending second configuration information, where the second configuration information includes an index of the one information block corresponding to the target terminal device.
  • the first information group set includes at least one candidate target information group, and the candidate target information group includes first transmission block size TBS information, first modulation and coding MCS information, and first time information.
  • TBS information first transmission block size
  • MCS information first modulation and coding MCS information
  • first time information At least one of domain resource information or first frequency domain resource information, or includes the first TBS information, the first MCS information, the first time domain resource information, or the first frequency domain resource information Part of at least one type of information.
  • the first information group set includes at least two candidate target information groups, and the first indication information is used to activate the first information group from the at least two candidate target information groups. Target information group.
  • the candidate target information group includes the first TBS information, the first MCS information, and the first time domain resource information
  • the method further includes: sending a second DCI,
  • the second DCI indicates at least one target frequency domain resource set in at least two candidate frequency domain resource sets, and the frequency domain resource corresponding to the first frequency domain resource information is preset in the at least one target frequency domain resource set Or part of the pre-configured frequency domain resources.
  • the first DCI includes second indication information, and the second indication information indicates a target configuration mode of the frequency domain resources of the target terminal device; and/or when the at least one target
  • the preset or pre-configured frequency domain resources include multiple target frequency domain resource information sets.
  • a frequency domain resource configuration method the first DCI includes third indication information, the third indication information indicates a target configuration method of frequency domain resources of the target terminal device, and the target configuration method belongs to the multiple frequency domains. Domain resource configuration method.
  • the method further includes: sending fourth indication information, where the fourth indication information instructs the target terminal device to terminate the use of the target resource corresponding to the first target information group.
  • the beneficial effects of the fourth aspect can be referred to the beneficial effects of the third aspect, which will not be repeated here.
  • a communication device is provided.
  • the communication device has the function of realizing the behavior in the method embodiment of the first aspect described above.
  • the function can be realized by hardware, or by hardware executing corresponding software.
  • the hardware includes one or more modules corresponding to the above-mentioned functions.
  • the communication device includes: a transceiver module, configured to receive first downlink control information DCI, where the first DCI indicates at least one target frequency domain resource set among at least two candidate frequency domain resource sets
  • the predetermined or pre-configured part of the frequency resources in the at least one target frequency domain resource set includes frequency domain resources corresponding to the first frequency domain resource information
  • the processing module is configured to receive or send data on the frequency domain resources.
  • a communication device in a sixth aspect, is provided, and the beneficial effects can be referred to the description of the third aspect and will not be repeated here.
  • the communication device has the function of realizing the behavior in the method example of the third aspect described above.
  • the function can be realized by hardware, or by hardware executing corresponding software.
  • the hardware or software includes one or more modules corresponding to the above-mentioned functions.
  • the communication device includes: a processing module for storing instructions for instructing the transceiver module to receive first configuration information, where the first configuration information includes a first set of information groups of the target terminal device And receiving first downlink control information DCI, where the first DCI includes multiple target information blocks, one of the multiple target information blocks corresponds to the target terminal device, and the one information block includes the first An indication information, the first indication information is used to activate a first target information group of the target terminal device, and the first target information group belongs to the first information group set.
  • These modules can perform the corresponding functions in the method example of the third aspect. For details, please refer to the detailed description in the method example, which will not be repeated here.
  • a communication device in a seventh aspect, is provided, and the beneficial effects can be referred to the description of the second aspect and will not be repeated here.
  • the communication device has the function of realizing the behavior in the method example of the second aspect described above.
  • the function can be realized by hardware, or by hardware executing corresponding software.
  • the hardware or software includes one or more modules corresponding to the above-mentioned functions.
  • the communication device includes: a transceiver module, configured to send first downlink control information DCI, where the first DCI indicates at least one target frequency domain resource set among at least two candidate frequency domain resource sets
  • the predetermined or pre-configured part of the frequency resources in the at least one target frequency domain resource set includes frequency domain resources corresponding to the first frequency domain resource information
  • the processing module is configured to receive or send data on the frequency domain resources.
  • a communication device is provided.
  • the communication device has the function of realizing the behavior in the method example of the fourth aspect.
  • the function can be realized by hardware, or by hardware executing corresponding software.
  • the hardware or software includes one or more modules corresponding to the above-mentioned functions.
  • the communication device includes: a processing module configured to store instructions for instructing the transceiver module to send first configuration information, where the first configuration information includes a first set of information groups of the target terminal device; and Send first DCI downlink control information, where the first DCI includes multiple target information blocks of multiple terminal devices, one of the multiple target information blocks corresponds to the target terminal device, and the one information block It includes first indication information, where the first indication information is used to activate a first target information group of the target terminal device, and the first target information group belongs to the first information group set.
  • These modules can perform the corresponding functions in the above-mentioned method example of the fourth aspect. For details, please refer to the detailed description in the method example, which will not be repeated here.
  • a communication device may be the terminal device in the foregoing method embodiment, or a chip set in the terminal device.
  • the communication device includes a communication interface, a processor, and optionally, a memory.
  • the memory is used to store a computer program or instruction, and the processor is coupled with the memory and a communication interface.
  • the processor executes the computer program or instruction
  • the communication device executes the method executed by the terminal device in the foregoing method embodiment.
  • a communication device may be the network device in the foregoing method embodiment, or a chip set in the network device.
  • the communication device includes a communication interface, a processor, and optionally, a memory.
  • the memory is used to store a computer program or instruction, and the processor is coupled with the memory and a communication interface.
  • the processor executes the computer program or instruction
  • the communication device executes the method executed by the network device in the foregoing method embodiment.
  • a computer program product includes: computer program code, which when the computer program code is running, causes the methods executed by the terminal device in the above aspects to be executed.
  • a computer program product comprising: computer program code, when the computer program code is executed, the method executed by the network device in the above aspects is executed.
  • the present application provides a chip system, the chip system includes a processor, and is configured to implement the functions of the terminal device in the methods of the foregoing aspects.
  • the chip system further includes a memory for storing program instructions and/or data.
  • the chip system can be composed of chips, and can also include chips and other discrete devices.
  • the present application provides a chip system, which includes a processor, and is configured to implement the functions of the network device in the methods of the foregoing aspects.
  • the chip system further includes a memory for storing program instructions and/or data.
  • the chip system can be composed of chips, and can also include chips and other discrete devices.
  • this application provides a computer-readable storage medium that stores a computer program, and when the computer program is executed, the method executed by the terminal device in the above aspects is implemented.
  • the present application provides a computer-readable storage medium that stores a computer program, and when the computer program is executed, the method executed by the network device in the above aspects is implemented.
  • FIG. 1 is a schematic diagram of a communication-based system provided by an embodiment of this application.
  • Fig. 2 is a schematic diagram of an indication of a time domain resource provided by an embodiment of the application.
  • FIG. 3 is a schematic diagram of an indication of frequency domain resources provided by an embodiment of the application.
  • FIG. 4 is a schematic flowchart of a communication method provided by an embodiment of this application.
  • FIG. 5 is a schematic diagram of resources configured on subbands by different terminal devices according to an embodiment of the application.
  • FIG. 6 is a schematic diagram of resources configured on a subband of another different terminal device according to an embodiment of the application.
  • FIG. 7 is a schematic diagram of resources configured on subbands by another different terminal device according to an embodiment of the application.
  • FIG. 8 is a schematic diagram of different information blocks corresponding to different terminal devices according to an embodiment of the application.
  • FIG. 9 is a schematic flowchart of another communication method provided by an embodiment of this application.
  • FIG. 10 is a schematic structural diagram of a communication device provided by an embodiment of the application.
  • FIG. 11 is a schematic structural diagram of another communication device provided by an embodiment of this application.
  • words such as “exemplary” or “for example” are used as examples, illustrations, or illustrations. Any embodiment or design solution described as “exemplary” or “for example” in the embodiments of the present application should not be construed as being more preferable or advantageous than other embodiments or design solutions. To be precise, words such as “exemplary” or “for example” are used to present related concepts in a specific manner.
  • FIG. 1 is a schematic diagram of the architecture of a mobile communication system applied in an embodiment of the present application.
  • the mobile communication system includes a core network device 110, a wireless access network device 120, and at least one terminal device (the terminal device 130 and the terminal device 140 shown in FIG. 1).
  • the terminal device is connected to the wireless access network device in a wireless manner
  • the wireless access network device is connected to the core network device in a wireless or wired manner.
  • the core network device and the wireless access network device can be separate and different physical devices, or it can integrate the functions of the core network device and the logical function of the wireless access network device on the same physical device, or it can be a physical device. It integrates the functions of part of the core network equipment and part of the wireless access network equipment.
  • the terminal device can be a fixed location, or it can be movable.
  • Fig. 1 is only a schematic diagram.
  • the communication system may also include other network equipment, such as wireless relay equipment and wireless backhaul equipment, which are not shown in Fig. 1.
  • the embodiments of the present application do not limit the number of core network equipment, radio access network equipment, and terminal equipment included in the mobile communication system.
  • Radio access network equipment is the access equipment that terminal equipment accesses to the mobile communication system in a wireless manner. It can be a base station (base station), an evolved base station (evolved NodeB, eNodeB), and a transmission reception point. TRP), the next generation NodeB (gNB) in the 5G mobile communication system, the base station in the future mobile communication system or the access node in the WiFi system, etc.; it can also be a module or unit that completes part of the base station functions, such as It can be a centralized unit (central unit, CU), or a distributed unit (distributed unit, DU).
  • the embodiment of the present application does not limit the specific technology and specific device form adopted by the radio access network device.
  • wireless access network equipment is referred to as network equipment.
  • network equipment refers to wireless access network equipment.
  • the wireless access network device 120 may be referred to as the network device 120.
  • the wireless access network device 130 may be referred to as a network device 130.
  • the terminal device may also be called a terminal, user equipment (UE), mobile station, mobile terminal, and so on.
  • Terminal equipment can be mobile phones, tablet computers (Pad), computers with wireless transceiver functions, virtual reality terminal equipment, augmented reality terminal equipment, wireless terminals in industrial control, wireless terminals in unmanned driving, and wireless terminals in remote surgery , Wireless terminals in smart grids, wireless terminals in transportation safety, wireless terminals in smart cities, wireless terminals in smart homes, etc.
  • the embodiments of the present application do not limit the specific technology and specific device form adopted by the terminal device.
  • This application can be applied to a 5G new radio (NR) system, or to other communication systems, as long as there is an entity in the communication system that needs to send transmission direction indication information, and another entity needs to receive the indication information according to The indication information determines the transmission direction within a certain period of time.
  • NR new radio
  • Network equipment and terminal equipment can be deployed on land, including indoor or outdoor, handheld or vehicle-mounted; they can also be deployed on water; they can also be deployed on airborne aircraft, balloons, and satellites.
  • the embodiments of the present application do not limit the application scenarios of network equipment and terminal equipment.
  • the network equipment and the terminal equipment can communicate through a licensed spectrum, or communicate through an unlicensed spectrum, or communicate through a licensed spectrum and an unlicensed spectrum at the same time.
  • Network equipment and terminal equipment can communicate through a frequency spectrum below 6 GHz (gigahertz, GHz), communicate through a frequency spectrum above 6 GHz, and communicate using a frequency spectrum below 6 GHz and a frequency spectrum above 6 GHz at the same time.
  • the embodiment of the present application does not limit the spectrum resource used between the network device and the terminal device.
  • the time domain symbols may be orthogonal frequency division multiplexing (OFDM symbols), or single carrier-frequency division multiplexing (SC-FDM). )symbol. Unless otherwise specified, the symbols in the embodiments of the present application all refer to time-domain symbols.
  • the PUSCH is only used as an example of the uplink data channel.
  • the data channel may have different names.
  • the embodiment of this application does not. Make a limit.
  • 5G systems Compared with previous generations of mobile communication systems, 5G systems have put forward higher requirements in terms of transmission rate, delay and power consumption, and can be applied to a wider range of application scenarios, including but not limited to autonomous driving, AR/VR , Factory business, smart grid, Internet of Things, etc.
  • URLLC as one of the three typical services in the 5G communication system, puts forward more stringent requirements in terms of reliability and delay.
  • the data transmission of terminal equipment can be scheduled through network equipment.
  • the network device can schedule the terminal device to receive or send data through the indication information of the DCI carried in the PDCCH.
  • the DCI related to the data channel may include the following formats, which are Format 0-0 (Format 0-0), Format 0-1, Format 1-0, Format 1-1.
  • Format 0-0 and Format 0-1 can be used for uplink data channel scheduling
  • Format 1-0 and Format 1-1 can be used for downlink data channel instructions.
  • the overhead related to DCI may include one or more of MCS information, time domain resource information, and frequency domain resource information, which will be described separately below.
  • the network device can send the MCS information to the target terminal device through the DCI, and the TBS information can be obtained through calculation.
  • the TBS in the embodiment of this application can be the size of the data contained in the transport block (TB), that is, in a certain resource The amount of data or the number of bits carried on it.
  • the number of resource elements (resource elements, RE) in a time slot can be determined, and the number of REs that can be used by each physical resource block (PRB) can be calculated by formula (1).
  • N'RE can represent the number of REs that can be used on a PRB, It can represent the number of carriers in the frequency domain in a PRB; It can represent the number of symbols scheduled by a physical uplink shared channel (PUSCH) or a physical downlink shared channel (PDSCH) in a time slot; It can represent the number of REs occupied by a demodulation reference signal (DMRS) in a PRB, including DMRS overhead; It can represent the overhead of the parameter (xOverhead) configuration in the high-level parameter physical uplink shared channel-serving cell configuration (PUSCH-ServingCellConfig).
  • PUSCH physical uplink shared channel
  • PDSCH physical downlink shared channel
  • DMRS demodulation reference signal
  • the number of REs used to calculate TBS is obtained by formula (2).
  • N RE min(156,N' RE ) ⁇ n PRB (2)
  • N RE can represent the number of REs used to calculate TBS
  • n PRB can represent the number of allocated PRBs.
  • the number of information bits is obtained by formula (3).
  • N info N RE ⁇ R ⁇ Q m ⁇ (3)
  • N info can be the number of information bits
  • R is the code rate
  • Q m modulation order is the number of transmission layers.
  • ⁇ is the number of transmission layers.
  • the two parameters R and Q m can be found in the protocol table through the values indicated by the MCS field in the DCI.
  • N info ⁇ 3824 calculate the quantized intermediate value of the information bit by formula (4).
  • the TBS can be calculated based on formula (6).
  • TBS can be calculated based on formula (7).
  • the PDSCH time domain resource information can be indicated through DCI.
  • the time domain resource information may include the mapping mode, K 0 , S, L.
  • the mapping mode may include type A and type B
  • K 0 may represent the time slot interval of the PDSCH relative to the corresponding PDCCH
  • S and L respectively represent the starting position and length in the time slot indicated by K 0.
  • the details are shown in Figure 2 (a).
  • mapping method In order to facilitate the understanding of the solution of the present application, the following briefly describes the types included in the mapping method.
  • Type A means that in a slot, the symbols occupied by the PDSCH can start from the ⁇ 0, 1, 2, 3 ⁇ symbol position, and the symbol length is 3-14 symbols (cannot exceed the slot boundary). For this allocation method, a large number of time-domain symbols are allocated, which is suitable for large-bandwidth scenarios.
  • a typical application scenario can be: the symbol 0-2 bit PDCCH in the time slot, and the symbol 3-13 bit PDSCH, which occupies the entire time slot. Therefore, Type A can also be generally referred to as time slot-based scheduling.
  • Type B means that in a time slot, the symbols occupied by the PDSCH start from the ⁇ 0,1,...,12 ⁇ symbol position, but the symbol length is limited to ⁇ 2,4,7 ⁇ symbols (cannot exceed the time slot boundary).
  • the position of the PDSCH start symbol can be flexibly configured, the number of allocated symbols is small, and the delay is short, which is suitable for low latency (LL) and high reliability (UR) scenarios, and realizes URLLC applications. Therefore, Type B can also be generally referred to as a non-slot-based scheduling type.
  • the DCI carried in the PDCCH selects a row in the table pre-configured by the higher layer as the time domain resource of the PDSCH.
  • Table 1 is only exemplary, and should not impose any restriction on the time domain resource table.
  • the PDSCH frequency domain resource information can also be indicated by the DCI carried in the PDCCH. There are two ways to indicate frequency domain resources.
  • the first method is type 0, and the frequency domain granularity of this indication method is resource block groups (RBG). Take a bandwidth of 10 resource blocks (resource block, RB) and an RBG size of 2 as an example for description, as shown in (a) in FIG. 3. The size of each resource block group is 2 RBs, therefore, 10 RBs can be divided into 5 groups.
  • the frequency domain resources occupied by the PDSCH can be indicated in the form of bits. Taking the indication information 10001 in the PDCCH as an example, the PDSCH occupies RBG0 and RBG4.
  • the second method is Type 1, which is a continuous allocation.
  • the indication of the time domain and frequency domain resource information of the downlink data channel The above briefly explained the indication of the time domain and frequency domain resource information of the downlink data channel. The following will explain the indication of the time domain and frequency domain resource information of the uplink data channel, and the indication of the time domain and frequency domain resource information of the uplink data channel. Similar to the indication of the time domain and frequency domain resource information of the downlink data channel, there is a difference, which will be described in detail below.
  • the indication of the time domain resource information of the PUSCH is similar to the indication of the time domain resource information of the PDSCH, and the difference lies in the time slot offset of the PDCCH corresponding to the data channel.
  • the time slot offset can be represented by K 0
  • the time slot offset can be represented by K 2. See below for details.
  • PUSCH can be scheduled through PDCCH.
  • DCI format 0-0 and format 0-1 can be used to schedule PUSCH.
  • the time domain resource assignment in the DCI may correspond to a row in the resource allocation table.
  • Each row in the resource allocation table can include three pieces of information, namely K 2 , starting symbol and length, and mapping type.
  • S can represent the starting symbol of PUSCH
  • L can represent the symbol length occupied by PUSCH
  • the mapping type may include type A and type B, which are similar to the types indicated above. For the sake of introduction, details are not described here.
  • the time-domain resource information for PUSCH may also include the mapping mode, K 2 , S, L.
  • K 2 can represent the time slot interval of PUSCH with respect to its corresponding PDCCH
  • S and L can respectively represent the starting position and length in the time slot indicated by K 2, refer to (b) in FIG. 2.
  • the DCI carried in the PDCCH selects a row in the table pre-configured by the higher layer as the time domain resource of the PUSCH.
  • Table 2 and Table 3 are only exemplary, and should not impose any restrictions on the time domain resource table.
  • the indication of PUSCH frequency domain resource information is similar to the indication of PDSCH resource information. For brevity, details are not repeated here.
  • the data is mostly small packet services, such as 200 bits (bit), and the overhead of DCI requires 20 bits.
  • the overhead of DCI occupies 10% of small packet services, and it may be as high as 20% in severe cases.
  • improve the performance of the communication system. Therefore, how to effectively reduce the DCI overhead is a problem that needs to be solved.
  • an embodiment of the present application provides a schematic flowchart of a communication method.
  • the method may be executed by a terminal device and a network device, or may also be executed by a chip in the terminal device and a chip in the network device.
  • the communication method 400 may include:
  • the network device sends a first DCI to the terminal device, where the first DCI indicates at least one target frequency domain resource set in the at least two candidate frequency domain resource sets, and the at least one target frequency domain resource set is predetermined or pre-configured Part of the frequency resources of includes frequency domain resources corresponding to the first frequency domain resource information.
  • S420 The network device receives or sends data on the frequency domain resource.
  • steps S410-S420 may be executed by the core network device 110 and/or the radio access network device 120 in FIG. 1.
  • S430 The terminal device receives the first DCI.
  • the terminal device receives or sends data on the frequency domain resource.
  • steps S430-S440 may be executed by the terminal device 130 and/or the terminal device 140 in FIG. 1.
  • execution sequence of the foregoing examples is only a list, and the execution sequence of the foregoing examples may also be S410, S430, S420, S440 or S410, S430, S440, S420.
  • the application does not specifically limit the execution steps of the above examples.
  • the candidate frequency domain resource set in the embodiment of the present application may include multiple subbands, where the subband occupied by at least one terminal device, the frequency domain resources occupied by each subband in the multiple subbands, and the presence of at least one terminal device
  • the configuration mode on each subband can be pre-configured by the network device.
  • the network device can know the frequency domain resource situation of each terminal device in at least one terminal device; and for the terminal device, each terminal device in at least one terminal device can know its own frequency domain resource situation, and does not know other terminal devices. Frequency domain resource situation.
  • the subband occupied by at least one terminal device may include the subband occupied by each terminal device in the at least one terminal device.
  • the subband occupied by each terminal device in the at least one terminal device may include the subband occupied by each terminal device in the at least one terminal device.
  • the terminal device 1 occupies 2 subbands, which are respectively Subband 1 and subband 2; the frequency domain resources occupied on subband 1 include RB0, RB1, RB2, RB3, RB4, RB5, RB6, and RB8, and the frequency domain resources occupied on subband 2 include RB0, RB1, RB2, RB3 , RB4, RB5, RB6 and RB7; further, Figure 5 (a) also shows the configuration of the subband occupied by the terminal device, for example, the terminal device 1 occupies RB0 and RB1 on the subband 1, and the terminal device 1 RB3 is occupied on subband 2.
  • the first DCI may indicate subband 1, and the first frequency domain resource information may be part of frequency domain resources in subband 1. Assuming that the target terminal device is terminal device 1, the target terminal device may determine that RB0 and RB1 are the first A frequency domain resource corresponding to frequency domain resource information; if the first DCI indicates subband 2, the first frequency domain resource information may be part of frequency domain resources in subband 2. Assuming that the target terminal device is terminal device 1, the target The terminal device may determine that RB3 is the frequency domain resource corresponding to the first frequency domain resource information.
  • the number of RBs allocated in each subband may be the same or different.
  • the number of RBs allocated for subband 1 and subband 2 can both be 10; or the number allocated for subband 1 can be 9, and the number allocated for subband 2 can be 10; for this, there is no restriction on application.
  • the preset or pre-configured part of the frequency domain resources in the embodiment of the present application may refer to that the frequency domain resources in the subband are not continuous (or may also be referred to as discrete).
  • the discontinuous frequency domain resources in this application may mean that the frequency domain resources do not occupy the entire subband.
  • the frequency domain resources of the terminal device 5 in subband 1 include RB4, RB5, and RB6, and in subband 2.
  • the frequency domain resources include RB1, RB2 and RB5, RB6 and RB7, all of which can be considered as discontinuous frequency domain resources.
  • the candidate frequency domain resource information set may include only one subband. As shown in FIG. 5(b), in this case, the frequency domain resources occupied by the subband and the configuration mode of at least one terminal device on this subband can be configured in advance.
  • the frequency domain resources of subband 1 include RB0, RB1, RB2, RB3, RB4, RB5, RB6 and RB8; the frequency domain resources occupied by terminal device 1 on subband 1 are RB0 and RB1, and terminal device 2 occupies on subband 1.
  • the frequency domain resources are RB0, RB1 and RB2.
  • the solution provided in this application indicates to the terminal device that part of the resources of the target resource set can be used to receive or send data through a preset or configuration method, so that the size of the target resource set can be flexibly set, compared with the current situation.
  • the first 2 RBs of one of the groups can be preset or pre-configured by the network device to transmit data to the terminal device. Therefore, the network device can transmit data to the terminal through the first DCI with a 2-bit overhead.
  • the device gives instructions.
  • the frequency domain resources in the target frequency domain resource set are preset or pre-configured by the network device, and there can be multiple configuration methods in different time periods, which can improve the flexibility of the target terminal device in using the frequency domain resources.
  • the terminal device may include multiple configuration modes on one subband. Based on this, the first indication information included in the first DCI may also indicate the target configuration mode. For details, see below.
  • the first DCI includes first indication information, and the first indication information indicates a target configuration mode of the frequency domain resources of the target terminal device;
  • the frequency domain resources include multiple frequency domain resource configuration modes
  • the first DCI includes second indication information
  • the second indication information indicates a target configuration mode of the frequency domain resources of the target terminal device, and the target configuration mode It belongs to the multiple frequency domain resource configuration methods.
  • the target frequency domain resource set is subband 1
  • the configuration mode of terminal device 1 can include configuration mode 1, configuration mode 2, and configuration mode 3.
  • the configuration mode of terminal device 2 can include configuration mode 4 and configuration mode 5, and terminal device 3
  • the configuration mode of may include configuration mode 6, wherein the frequency domain resources occupied by each configuration mode may be the same or different, and are not limited.
  • the first indication information in the first DCI is also used to indicate the target configuration mode of the frequency domain resources of the target terminal device. For example, if the first indication information indicates that the configuration mode 1 is the target configuration mode, the target terminal device may use RB0 and RB1 to send or receive data.
  • the target terminal device is the terminal device 3, since the terminal device 3 only includes the configuration mode 6 on the subband 1, the first indication information may no longer indicate the target configuration mode, and the terminal device 3 can use RB3, RB5 and RB8 send or receive data.
  • At least one target frequency domain resource set includes multiple target frequency domain resource sets, that is, includes multiple subbands, for example, includes two subbands, as shown in FIG. Schematic diagram of the resources configured on the.
  • the target frequency domain resource set includes subband 1 and subband 2
  • the configuration mode of terminal device 1 may include configuration mode 1, configuration mode 2, and configuration mode 3
  • the configuration mode of terminal device 2 may include configuration mode 4 and configuration mode 5.
  • the configuration mode of the terminal device 3 may include configuration mode 6, wherein the frequency domain and frequency domain occupied by each configuration mode may be the same or different without limitation.
  • the second indication information in the first DCI is also used to indicate the target configuration mode of the frequency domain resources of the target terminal device. For example, if the second indication information indicates that configuration mode 1 is the target Configuration mode, the target terminal device can use RB0 and RB1 on subband 1 or RB3 on subband 2 to send or receive data; if the second indication information indicates that configuration mode 3 is the target configuration mode, the target terminal device can use subband RB1 on band 1 or RB3, RB4, RB5, and RB6 on subband 2 send or receive data.
  • the target terminal device is the terminal device 3, since the terminal device 3 only includes the configuration mode 6, the second indication information may no longer indicate the target configuration mode, and the terminal device 3 can use the RB3 on the subband 1. , RB5 and RB8 or RB2, RB3 and RB5 on subband 2 send or receive data.
  • the preset or pre-configured frequency domain resources may include multiple frequency domain resource configuration methods, and the indication information in the first DCI may indicate one of the multiple frequency domain resource configuration methods as the target terminal.
  • the target configuration mode of the frequency domain resources of the equipment can improve the flexibility of the target terminal equipment in using the frequency domain resources.
  • the method further includes: the network device sends the first TBS information and the first information to the terminal device, where the first TBS information and the first information are used to indicate the second information.
  • the terminal device receives the first TBS information and the first information; the terminal device determines the second information according to the first TBS information, the first information, and the first frequency domain resource information.
  • the first information and the second information are respectively any one of the first MCS information and the first time domain resource information, and the first information and the second information are different.
  • the first information may be the first MCS information and the second information is the first time domain resource information, or the first information may be the first time domain resource information and the second information is the first MCS information. No specific restrictions.
  • the target terminal device can determine the second information according to the received first TBS information, the first information, and the first frequency domain resource information, because the second information is determined by the terminal device itself through multiple pieces of information There is no need for the network device to indicate the second information through the DCI, thereby reducing the overhead of the network device using the DCI to indicate the second information, thereby improving the performance of the communication system.
  • the network device may send high-level signaling to the target terminal device, and the high-level signaling includes the first TBS information.
  • the target terminal device receives the high-level signaling.
  • the high-level signaling may be media access control (MAC) layer signaling or unlimited resource control (radio resource control, RRC) layer signaling, etc., which is not specifically limited in this application.
  • MAC media access control
  • RRC radio resource control
  • the network device can send the first TBS information to the terminal device through semi-statically configured high-level signaling, which is compared with the prior art.
  • the network device needs to frequently indicate MCS information, time domain resource information, and frequency domain resource information to the terminal device through DCI, so that the terminal device determines the first TBS information solution based on the multiple pieces of information, thereby further reducing the overhead of the network device.
  • the first time domain resource information and the first length satisfy a first association relationship
  • the first length is determined by the first TBS Information, the first MCS information, and the first frequency domain resource information.
  • the first length may be expressed as the number of symbols included in the first time domain resource information.
  • the first length may also be the length L of the time domain resource information mentioned above.
  • the first association relationship may mean that the first length is the same as the length in the first time domain resource information; or it may be that the difference between the first length and the length in the first time domain resource information is the smallest.
  • the first association relationship may be the default, or may be selected from multiple time-domain resource information based on the principle of priority, or may be selected from multiple time-domain resource information corresponding to the resource information after n symbols , Where the value of n can be preset.
  • the target terminal device may determine the first length based on the received first frequency domain resource information, the first MCS information, and the first TBS information, and determine the first time according to the first length from the pre-configured time domain resource information set. Domain resource information.
  • the network device may send the pre-configured time domain resource information set to the target terminal device.
  • each time domain resource information in the time domain resource information set may include one of resource indication type, frequency domain resource mapping mode, resource indication value of time domain resource, starting position of time domain resource, or occupied length, or Many kinds.
  • the target terminal device can determine the required RE through the first MCS information and the first TBS information, and combine the first frequency domain resource information to obtain the required first length L, and then select one from the pre-configured time domain resource information set The time domain resource information is used as the first time domain resource information of the target terminal device.
  • the pre-configured time-domain resource information set includes three types of time-domain resource information, namely time-domain resource information A, B, and C, and the lengths L corresponding to these three types of resource information are 1, 6, and 8, respectively. If the first length determined by the above calculation is 6, because in the three types of resource information, under the condition that the first length is the same as the length in the first time domain information, the first length is the same as that in the time domain resource information B.
  • the target terminal device can select the time domain resource information B as the first time domain resource information; if the first length determined by the above calculation is 2, because of the three types of resource information, the one with the smallest guaranteed difference In the case, the difference between the first length and the length corresponding to the time domain resource information A is the smallest, and the target terminal device may select the time domain resource information A as the first time domain resource information.
  • multiple pieces of resource information in the pre-configured time-domain resource information set satisfy the above conditions, and the selection can be made based on a preset criterion.
  • a terminal device or a network device may default a certain type of time domain resource information as the first time domain resource information, and the terminal device may also select a certain type of time domain resource information as the first time domain resource information based on the principle of priority.
  • the first time domain resource information can be selected from multiple time domain resource information.
  • the pre-configured time-domain resource information set includes five types of time-domain resource information, namely time-domain resource information A, B, C, D, and E.
  • the lengths L included in these five types of time-domain resource information are respectively It is 1, 6, 6, 8, 12. If the first length L determined according to the above steps is 6, the selection range of the first time domain resource information is determined to be B and C.
  • the terminal device can select time domain resource information B as the target by default
  • the first time domain resource information of the terminal device or the time domain resource information C is selected by default as the first time domain resource information of the target terminal device.
  • Another way is that the terminal device can be selected based on the principle of priority.
  • time-domain resource information B can be pre-configured to be superior to time-domain resource information C, and then time-domain resource information B can be selected as the first time-domain resource information of the target terminal device.
  • the time domain resource information B and C respectively correspond to a K 0.
  • the time domain resource information with the smallest K 0 value corresponding to the time domain resource information B or C after n symbols can be selected as the first 1.
  • Time domain resource information; or time domain resource information B and C respectively correspond to the same K 0 , then the time domain resource information with the smallest S value corresponding to time domain resource information B or C is further selected as the first time domain resource information .
  • the first time domain resource information is determined by the terminal device itself through the first TBS information, the first MCS information, and the first frequency domain resource information, it is compared with the requirements of the network equipment in the prior art.
  • the solution in which the DCI indicates the first time domain resource information to the terminal device can further reduce the overhead of the network device using the DCI to indicate the first time domain resource information, thereby improving the performance of the communication system.
  • time domain resource information of the downlink data channel is similar, and the difference lies in the time slot offset in the time domain resource information of the downlink data channel.
  • the shift is represented by K 2 and the time slot offset in the time domain resource information of the uplink data channel is represented by K 0.
  • K 2 the time slot offset in the time domain resource information of the uplink data channel is represented by K 0.
  • the second information is the first MCS information
  • the spectral efficiency in the first MCS information and the first spectral efficiency satisfy a second association relationship
  • the first spectral efficiency is determined by the first Time domain resource information, the first frequency domain resource information, and the first TBS information are determined.
  • the first time domain resource information may include the start symbol S and the length L of the time domain resource, the start and length indicator value (SLIV) of the time domain resource, or the time domain resource
  • the first frequency domain resource information in the embodiment of the present application may include frequency domain resource indication types, frequency domain resource mapping modes, and resource indicator value (RIV) of frequency domain resources.
  • the start RB of the frequency domain resource or the occupied RB length L RB or the bitmap of the frequency domain resource may be included in the time domain resource.
  • the second association relationship may mean that the first spectral efficiency is the same as the spectral efficiency in the first MCS information; or it may be that the difference between the first spectral efficiency and the spectral efficiency in the first MCS information is the smallest.
  • the target terminal device may determine the first spectral efficiency according to the received information, and determine the first MCS information from a preset table according to the first spectral efficiency. Please refer to the following for details.
  • the target terminal device may calculate the number of REs carrying data according to the first time domain resource information and the first frequency domain resource information. Specifically, N RE can be obtained according to the above formula (2), and then the spectral efficiency ⁇ can be obtained according to the formula (8).
  • N TB can represent TBS, and the unit is bit.
  • the modulation order Q m and the code rate R corresponding to the spectral efficiency with the smallest difference between the first spectral efficiency ⁇ can be selected from the MCS table 4 according to the spectral efficiency ⁇ . It should be understood that Table 4 is only exemplary, and should not impose any limitation on the MCS table.
  • the target terminal equipment calculated by the above formula has a spectral efficiency of 1.1
  • the modulation order Q m can be 2
  • the code rate R*[1024] can be 602
  • the corresponding code rate R can be 0.5879 .
  • the first MCS information is calculated by the terminal device itself through the first time domain resource information, the first frequency domain resource information, and the first TBS information, it is compared with the network equipment in the prior art.
  • a solution that needs to indicate the first MCS information to the terminal device through the DCI can reduce the overhead of the network device using the DCI to indicate the first MCS information, thereby improving the performance of the communication system.
  • the network device sends a second DCI to the target terminal device, the second DCI includes a plurality of information blocks, one of the plurality of information blocks corresponds to the target terminal device, and the one information block Including third indication information, the third indication information indicating the first resource block of the target terminal device, the first resource block including the first TBS information, the first MCS information, and the first time At least one of the domain resource information, or part of information including at least one of the first TBS information, the first MCS information, and the first time domain resource information; and sending second configuration information,
  • the second configuration information includes the index of the one information block corresponding to the target terminal device.
  • the target terminal device receives the second DCI and the second configuration information.
  • the network device may send the second DCI and the second configuration information to the target terminal device.
  • the target terminal device may determine the content of the received information according to the third indication information included in an information block in the second DCI and the index of an information block included in the second configuration information.
  • the first resource block in the embodiment of the present application may include at least one of first TBS information, first MCS information, or first time domain resource information.
  • the first resource block may include the first TBS. Information; or may include the first TBS information and the first MCS information; or may include the first TBS information, the first MCS information, and the first time domain resource information.
  • the included information is only an example for illustration, and may also be other information. For the sake of brevity, it will not be repeated here.
  • the first resource block in the embodiment of the present application may also include part of information in at least one of the first TBS information, the first MCS information, and the first time domain resource information. If the first resource block includes part of information of one type of information, the first resource block may be part of the information in the first TBS information, or the first resource block may be part of the information in the first MCS information, or the first resource block may be part of the information in the first MCS information. The resource block may be part of the information in the first time domain resource information. If the first resource block can include partial information of two types of information, the first resource block can include partial information of each of the two types of information, or include part of one of the two types of information. information.
  • the first resource block may include part of the first TBS information and part of the first MCS information; or, the first resource block may include part of the first TBS information Information and the first MCS information; or, the first resource block may include the first TBS information and partial information of the first MCS information. This application does not specifically limit this.
  • the first resource block may also include partial information of three types of information
  • the first resource block may include partial information of each of the three types of information, or include at most two types of information of the three types of information. Part of the information.
  • the first resource block may include partial information of the first TBS information, partial information of the first MCS information, and partial information of the first time domain resource information; or, the first resource block may also include the first TBS information and the first time domain resource information.
  • Part information of the MCS information and part of the information in the first time domain resource information, or the first resource block may include part of the information in the first TBS information, part of the first MCS information and part of the information in the first time domain resource information, Alternatively, the first resource block may include partial information of the first TBS information, partial information of the first MCS information, and first time domain resource information.
  • the second DCI includes multiple information blocks, where one information block in the multiple information blocks corresponds to the target terminal device, and other information blocks in the multiple information blocks can be associated with other terminal devices. correspond.
  • the second DCI includes multiple information blocks, namely, information block 1, information block 2, information block 3, information block 4, and information block 5, as can be seen from the figure .
  • Terminal device 1 occupies information block 1
  • terminal device 2 occupies information block 2
  • terminal device 3 occupies information block 3
  • terminal device 4 occupies information block 4
  • terminal device 5 occupies information block 5, if terminal device 1 is in the implementation of this application If the target terminal device is located, the target terminal device occupies information block 1.
  • the information block that the target terminal device determines to occupy can be determined by the index of the information block corresponding to the target terminal device included in the second configuration information.
  • Information block 2 information block 3, information block 4, and information block 5.
  • the network device can send the identifier "0" to the target terminal device, and the target terminal device can determine that the information block 1 is an information block in this application.
  • terminal device 1 can occupy information block 1 and information block 2
  • terminal device 2 can occupy information block 3 and information block 4
  • terminal device 3 can occupy information block 5.
  • terminal device 1 and terminal device 2 can both occupy information block 1 and information block 2, and terminal device 3 can occupy information block 3, information block 4, and information block 5.
  • the network device can know the information block occupied by each terminal device in the at least one terminal device; and for the terminal device, Each terminal device in at least one terminal device can know the information block occupied by itself, but not the information block occupied by other terminal devices.
  • the second DCI sent by the network device to the target terminal device may include multiple target information blocks, and one information block of the multiple target information blocks may correspond to the target terminal device, that is, multiple terminal devices
  • the DCI joint coding requires a separate coding scheme, which can save the overhead of the DCI.
  • an embodiment of the present application provides a schematic flowchart of another communication method.
  • the communication method may be executed by a terminal device and a network device, or may also be executed by a chip in the terminal device and a chip in the network device.
  • the communication method 900 may include:
  • the network device sends first configuration information to the terminal device, where the first configuration information includes a first information group set of the target terminal device.
  • S920 The terminal device receives the first configuration information.
  • the network device may send the first configuration information to the target terminal device through high-level signaling, that is, the network device may send the high-level signaling to the target terminal device, and the high-level signaling may include the first configuration information.
  • the high-level signaling in the embodiments of this application may be MAC layer signaling or RRC layer signaling, etc., which is not specifically limited in this application.
  • the network device sends a first DCI to the terminal device, where the first DCI includes multiple target information blocks of multiple terminal devices, and one of the multiple target information blocks is related to the target terminal device.
  • the one information block includes first indication information, and the first indication information is used to activate a first target information group of a target terminal device, and the first target information group belongs to the first information group set.
  • the terminal device receives the first DCI.
  • execution sequence of the foregoing examples is just a list, and the execution sequence of the foregoing examples may also be S910, S930, S920, and S940.
  • the application does not specifically limit the execution steps of the above examples.
  • the first DCI in the embodiment of the present application may include multiple target information blocks, and one information block in the multiple target information blocks may correspond to the target terminal device, and other target information blocks in the multiple target information blocks may correspond to Corresponding to other terminal equipment.
  • the specific situation can be referred to as shown in (a) in FIG. 8, which will not be repeated here.
  • the first indication information included in one information block in the embodiment of the present application can activate the first target information group, and the first target information group may be one or multiple, and is not limited.
  • the network device can know the information block occupied by each terminal device in the at least one terminal device; and for the terminal device, Each terminal device in at least one terminal device can know the information block occupied by itself, but not the information block occupied by other terminal devices.
  • the first DCI sent by the network device to the target terminal device may include multiple target information blocks, and one information block of the multiple target information blocks may correspond to the target terminal device, that is, multiple terminal devices
  • the DCI joint coding requires a separate coding scheme, which can save the overhead of the DCI.
  • the network device may also send second configuration information to the target terminal device, where the second configuration information includes the index of the one information block corresponding to the target terminal device.
  • the target terminal device may receive the second configuration information.
  • the information block that the target terminal device determines to occupy can be determined by the index of the information block corresponding to the target terminal device included in the second configuration information.
  • the first information group set includes at least one candidate target information group, and the candidate target information group includes first TBS information, first MCS information, first time domain resource information, or first frequency domain resource information. Or at least one of the first TBS information, the first MCS information, the first time domain resource information, or the first frequency domain resource information.
  • the candidate target information group in the embodiment of the present application may include at least one of the first TBS information, the first MCS information, the first time domain resource information, or the first frequency domain resource information.
  • the candidate target information group may include the first TBS information, the first MCS information, or the first frequency domain resource information.
  • the candidate target information group in the embodiment of the present application may include part of information in at least one of the first TBS information, the first MCS information, the first time domain resource information, or the first frequency domain resource information.
  • the candidate target information group may include part of the information in the first TBS information; or may include part of the information in the first MCS information, or may include part of the information in the first time domain resource information, or may include the first frequency domain. Part of the information in the resource information.
  • the candidate target information group can include partial information of two types of information
  • the candidate target information group can include partial information of each of these two types of information, or it can also include partial information of one of these two types of information. Part of the information.
  • the candidate target information group may include part of the first TBS information and part of the first MCS information; or, may include the first TBS information and the first MCS information. Or, may include part of the information in the first TBS information and the first MCS information.
  • the candidate target information group can include partial information of three types of information
  • the candidate target information group can include partial information of each of the three types of information, or include at most two types of information of the three types of information. information.
  • the candidate target information group may include part of the first TBS information, part of the first MCS information, and part of the first time domain resource information. Part of the information; or may include the first TBS information, the first MCS information, and the first time domain resource information; or may include the first TBS information, the first MCS information, and the first time domain Part of the information in the resource information; or may include part of the first TBS information, part of the first MCS information, and first time domain resource information.
  • the candidate target information group can also include partial information of four types of information
  • the candidate target information group can include partial information of each of the four types of information, or include at most three types of information of the four types of information. Part of the information.
  • the implementation is similar to the above, for the sake of brevity, it will not be repeated here.
  • the first indication information is used to activate the first target information group from the at least two candidate target information groups.
  • the first indication information may activate one or more first targets as the target terminal device from the multiple candidate target information groups.
  • Information group when the first information group set includes multiple candidate target information groups, the first indication information may activate one or more first targets as the target terminal device from the multiple candidate target information groups.
  • the first indication information may activate one or two first target information groups as the target terminal device from the two candidate target information groups. For example, suppose that the first information group set includes two candidate target information groups, namely candidate target information group 1 and candidate target information group 2, and the first indication information may indicate candidate target information group 1 and/or candidate target information group 2.
  • the first target information group as the target terminal device is not limited.
  • the first indication information can be activated by selecting one of the configured information, and the information group includes multiple terminals
  • the information of the device is compared with the solution in the prior art in which the network device needs to frequently indicate the information block of each terminal device to the target terminal device through multiple DCIs, which can further save the overhead of the DCI.
  • the method further includes: receiving a second DCI, and the second DCI indicates at least one target frequency domain resource set in at least two candidate frequency domain resource sets, and the frequency domain resource corresponding to the first frequency domain resource information is preset or pre-configured in the at least one target frequency domain resource set Part of frequency domain resources.
  • the candidate frequency domain resource set in the embodiment of the present application may include multiple subbands, where the subband occupied by at least one terminal device, the frequency domain resource occupied by each subband in the multiple subbands, and at least one terminal device
  • the configuration method on each subband can be pre-configured.
  • the solution provided by the embodiment of the present application indicates to the terminal device that part of the resources of the target resource set can be used to receive or send data through a preset or configuration method, so that the size of the target resource set can be flexibly set.
  • it is more capable of saving the overhead of the DCI. For example, if there are 10 RBs, the 10 RBs can be divided into 5 groups in the prior art, and the network device needs to use 5 bits of overhead to indicate the 10 RBs to the terminal device through DCI; and the solution of this application can The 10 RBs are divided into 2 groups.
  • the first 2 RBs of one of the groups can be preset or pre-configured by the network device to transmit data to the terminal device. Therefore, the network device can transmit data to the terminal through the first DCI with a 2-bit overhead.
  • the device gives instructions.
  • the frequency domain resources in the target frequency domain resource set are preset or pre-configured by the network device, and there can be multiple configuration methods in different time periods, which can improve the flexibility of the target terminal device in using the frequency domain resources.
  • the first DCI includes second indication information, and the second indication information indicates a target configuration mode of the frequency domain resources of the target terminal device; or,
  • the at least one target frequency domain resource set is a plurality of the target frequency domain resource sets, and at least one target frequency domain resource set in the plurality of target frequency domain resource sets is preset or pre-configured It includes multiple frequency domain resource configuration modes
  • the first DCI includes third indication information
  • the third indication information indicates a target configuration mode of frequency domain resources of the target terminal device, and the target configuration mode belongs to the multiple A way to configure frequency domain resources.
  • the subbands included in the candidate frequency domain resource information set can be referred to above FIG. 6 and FIG. 7 for details. The details are not repeated here.
  • the preset or pre-configured frequency domain resources may include multiple frequency domain resource configuration methods, and the indication information in the first DCI may indicate one of the multiple frequency domain resource configuration methods as the target terminal.
  • the target configuration mode of the frequency domain resources of the equipment can improve the flexibility of the target terminal equipment in using the frequency domain resources.
  • the network device may also send fourth instruction information to the terminal device, the fourth instruction information instructing the target terminal device to terminate the use of the target resource corresponding to the first target information group.
  • the terminal device can receive the fourth indication information.
  • the terminal device may use the target resource corresponding to the first target information group according to a preset period.
  • the network device may send fourth indication information to the target terminal device through DCI, that is, the network device may send a DCI to the target terminal device, and the DCI may include the fourth indication information to instruct the target terminal device to terminate the use of the first A target resource corresponding to a target information group.
  • the target terminal device may continue to use the target resource corresponding to the first target information group according to the preset period before receiving the fourth indication information.
  • the target terminal device since the target terminal device can use the target resource corresponding to the first target information group before receiving the fourth indication information, the network device does not need to continuously send the information block to the target terminal device through DCI.
  • the overhead of DCI can be further saved, and the performance of the communication system can be improved.
  • FIG. 10 and FIG. 11 are schematic structural diagrams of possible communication devices provided by embodiments of this application. These communication devices can implement the functions of the terminal equipment or network equipment in the foregoing method embodiments, and therefore can also achieve the beneficial effects of the foregoing method embodiments.
  • the communication device may be the terminal device 130 or 140 shown in FIG. 1, or the access network device 120 shown in FIG. 1, or it may be applied to a terminal device or an access network.
  • the module of the device (such as a chip).
  • FIG. 10 is a schematic structural diagram of a communication device 1000 provided by an embodiment of the present application.
  • the device 1000 may include a transceiver module 1010 and a processing module 1020.
  • the transceiver module 1010 is used to receive the first downlink control information DCI, and the first DCI indicates at least two candidate frequencies.
  • At least one target frequency domain resource set in the at least one target frequency domain resource set, and the predetermined or pre-configured part of the frequency resources in the at least one target frequency domain resource set includes frequency domain resources corresponding to the first frequency domain resource information; the processing module 1020 uses To perform data reception or transmission on the frequency domain resource.
  • the transceiver module 1010 is used to send the first downlink control information DCI, and the first DCI indicates at least two candidate frequency domain resources At least one target frequency domain resource set in the set, and the predetermined or pre-configured part of the frequency resources in the at least one target frequency domain resource set includes frequency domain resources corresponding to the first frequency domain resource information; the processing module 1020 is configured to: Data reception or transmission is performed on the frequency domain resource.
  • the processing module 1020 is used to store instructions for instructing the transceiver module 1010 to receive first configuration information, and the first configuration
  • the information includes a first information group set of the target terminal device; and receiving first downlink control information DCI, where the first DCI includes a plurality of target information blocks, and one of the target information blocks is related to the target information block.
  • the one information block includes first indication information, the first indication information is used to activate the first target information group of the target terminal device, and the first target information group belongs to the first information group gather
  • the processing module 1020 is used to store instructions for instructing the transceiver module 1010 to send the first configuration information, the first configuration information A first information group set including a target terminal device; and sending first DCI downlink control information, the first DCI including a plurality of target information blocks of a plurality of terminal devices, and one information block of the plurality of target information blocks is associated with Corresponding to the target terminal device, the one information block includes first indication information, and the first indication information is used to activate the first target information group of the target terminal device, and the first target information group belongs to the first target information group.
  • a collection of information groups are examples of information groups.
  • transceiver module 1010 and processing module 1020, reference may be made to the relevant description in the foregoing method embodiment, which will not be described here.
  • the communication device 1100 includes a processor 1110 and an interface circuit 1120.
  • the processor 1110 and the interface circuit 1120 are coupled to each other.
  • the interface circuit 1120 may be a transceiver or an input/output interface.
  • the communication device 1100 may further include a memory 1130 configured to store instructions executed by the processor 1110 or input data required by the processor 1110 to run the instructions or store data generated after the processor 1110 runs the instructions.
  • the processor 1110 is used to perform the function of the foregoing processing module 1020, and the interface circuit 1120 is used to perform the function of the foregoing transceiver module 1010.
  • the terminal device chip When the foregoing communication device is a chip applied to a terminal device, the terminal device chip implements the function of the terminal device in the foregoing method embodiment.
  • the terminal device chip receives information from other modules in the terminal device (such as a radio frequency module or antenna), and the information is sent by the network device to the terminal device; or, the terminal device chip sends information to other modules in the terminal device (such as a radio frequency module or antenna).
  • the antenna sends information, which is sent by the terminal device to the network device.
  • the network device chip implements the function of the network device in the foregoing method embodiment.
  • the network device chip receives information from other modules in the network device (such as radio frequency modules or antennas), and the information is sent by the terminal device to the network device; or, the network device chip sends information to other modules in the network device (such as radio frequency modules or antennas).
  • the antenna sends information, which is sent by the network device to the terminal device.
  • the processor in the embodiments of the present application may be a central processing unit (CPU), or may be other general-purpose processors, digital signal processors (digital signal processors, DSP), and application-specific integrated circuits. (application specific integrated circuit, ASIC), field programmable gate array (field programmable gate array, FPGA) or other programmable logic devices, transistor logic devices, hardware components, or any combination thereof.
  • the general-purpose processor may be a microprocessor or any conventional processor.
  • the method steps in the embodiments of the present application can be implemented by hardware, and can also be implemented by a processor executing software instructions.
  • Software instructions can be composed of corresponding software modules, which can be stored in random access memory (RAM), flash memory, read-only memory (ROM), programmable read-only memory (programmable ROM) , PROM), erasable programmable read-only memory (erasable PROM, EPROM), electrically erasable programmable read-only memory (electrically EPROM, EEPROM), register, hard disk, mobile hard disk, CD-ROM or well-known in the art Any other form of storage medium.
  • An exemplary storage medium is coupled to the processor, so that the processor can read information from the storage medium and write information to the storage medium.
  • the storage medium may also be an integral part of the processor.
  • the processor and the storage medium may be located in the ASIC.
  • the ASIC can be located in an access network device or a terminal device.
  • the processor and the storage medium may also exist as discrete components in the access network device or the terminal device.
  • the above embodiments it may be implemented in whole or in part by software, hardware, firmware, or any combination thereof.
  • software it can be implemented in the form of a computer program product in whole or in part.
  • the computer program product includes one or more computer programs or instructions.
  • the computer may be a general-purpose computer, a special-purpose computer, a computer network, or other programmable devices.
  • the computer program or instruction may be stored in a computer-readable storage medium or transmitted through the computer-readable storage medium.
  • the computer-readable storage medium may be any available medium that can be accessed by a computer or a data storage device such as a server integrating one or more available media.
  • the usable medium may be a magnetic medium, such as a floppy disk, a hard disk, or a magnetic tape; it may also be an optical medium, such as a digital versatile disc (DVD); it may also be a semiconductor medium, such as a solid state drive (solid state drive). disk, SSD).
  • “at least one” refers to one or more, and “multiple” refers to two or more.
  • “And/or” describes the association relationship of the associated objects, indicating that there can be three relationships, for example, A and/or B, which can mean: A alone exists, A and B exist at the same time, and B exists alone, where A, B can be singular or plural.
  • the character “/” generally indicates that the associated object before and after is an “or” relationship; in the formula of this application, the character “/” indicates that the associated object before and after is a kind of "division" Relationship.

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Abstract

本申请实施例提供通信方法和装置，用以解决如何降低DCI开销的问题。在本申请中，终端设备接收第一DCI，所述第一DCI指示至少两个候选频域资源集合中的至少一个目标频域资源集合，所述至少一个目标频域资源集合中预定或预配置的部分频率资源包括第一频域资源信息对应的频域资源。所述终端设备在所述频域资源上进行数据接收或发送。通过预设或配置的方式，向终端设备指示出目标资源集合的部分资源可以用来进行数据数据接收或发送，从而可以灵活的设定目标资源集合的大小，相比现有技术中向终端设备指示的目标资源集合的全部资源都用于进行数据传输的方案，更能够节省DCI的开销。

Description

通信方法和装置
本申请要求于2020年04月30日提交中国专利局、申请号为202010366028.2、申请名称为“通信方法和装置”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本申请涉及通信领域，尤其涉及通信方法和装置。
背景技术
目前，终端设备的数据传输可以通过网络设备调度。网络设备通过物理下行控制信道(physical downlink control channel，PDCCH)中所承载的下行控制信息(downlink control information，DCI)的指示信息可以调度终端设备进行数据传输。
其中，涉及到DCI的开销可以包括调制与编码策略(modulation and coding scheme，MCS)信息、时域资源信息或频域资源信息的一种或多种。在很多超可靠低延迟通信(ultra-reliable and low-latency communications，URLLC)的业务场景中，多为小包业务，例如为200比特(bit)，而DCI的开销需要20bit，此时DCI的开销在小包业务中占有10％，严重时可能高达20％，限制了通信系统的性能。
因此，如何有效降低DCI开销是需要解决的一项问题。
发明内容
本申请实施例提供通信方法和装置，可以有效降低DCI的开销，从而可以提高通信系统的性能。
第一方面，提供一种通信方法，该方法的执行主体可以是终端设备，也可以是应用于终端设备中的芯片。下面以执行主体是终端设备为例进行描述。终端设备接收第一DCI，所述第一DCI可用于指示至少两个候选频域资源集合中的至少一个目标频域资源集合，所述至少一个目标频域资源集合中预定或预配置的部分频率资源包括第一频域资源信息对应的频域资源。所述终端设备在所述频域资源上进行数据接收或发送。采用这个设计，通过预设或配置的方式，向终端设备指示出目标资源集合的部分资源可以用来进行数据数据接收或发送，从而可以灵活的设定目标资源集合的大小，相比现有技术中向终端设备指示的目标资源集合的全部资源都用于进行数据传输的方案，更能够节省DCI的开销。例如，若有10个RB，现有技术中可以将这10个RB划分为5组，网络设备需要用5比特的开销通过DCI将这10个RB指示给终端设备；而本申请的方案可以将这10个RB划分为2个组，网络设备可以预设或预配置其中一个组的前2个RB可以用于终端设备传输数据，因此，网络设备可以用2比特的开销通过第一DCI向终端设备进行指示。此外，目标频域资源集合中的频域资源是网络设备预设或预配置的，在不同的时段可以有多种配置方式， 可以提高目标终端设备使用频域资源的灵活性。
在第一方面的一种可能的设计中，所述方法还包括：接收第一TBS信息和第一信息；根据所述第一TBS信息、第一信息和所述第一频域资源信息确定第二信息；其中，所述第一信息和所述第二信息分别为第一MCS信息和第一时域资源信息中任一信息，且所述第一信息和所述第二信息不同。采用这种设计，目标终端设备可以根据接收到的第一TBS信息、第一信息和第一频域资源信息确定第二信息，由于第二信息是终端设备自身通过多个信息确定的，不需要网络设备通过DCI指示，因而可以降低网络设备采用DCI指示第二信息的开销，从而可以提高通信系统的性能。
在第一方面的另一种可能的设计中，所述接收第一TBS信息，包括：接收来自网络设备的高层信令，所述高层信令中包括所述第一TBS信息。采用这种设计，由于第一TBS信息在一段时间内一般是固定不变的，网络设备可以通过半静态配置的高层信令向终端设备发送第一TBS信息，相比现有技术中网络设备需要频繁地通过DCI向终端设备指示MCS信息、时域资源信息和频域资源信息，以使得终端设备根据这多个信息确定第一TBS信息的方案，从而可以进一步降低网络设备的开销。
在第一方面的另一种可能的设计中，所述接收第一TBS信息和第一信息，包括：接收第二DCI，所述第二DCI包括多个信息块，所述多个信息块中的一个信息块与目标终端设备对应，所述一个信息块包括第三指示信息，所述第三指示信息指示所述目标终端设备的第一资源块，所述第一资源块包括所述第一TBS信息、所述第一MCS信息和所述第一时域资源信息中的至少一种，或者包括所述第一TBS信息、所述第一MCS信息、所述第一时域资源信息或所述第一频域资源信息中的至少一种信息中的部分信息；接收第二配置信息，所述第二配置信息包括所述目标终端设备对应的所述一个信息块的索引。采用这种设计，网络设备向目标终端设备发送的第二DCI可以包括多个信息块，该多个信息块中的一个信息块可以对应目标终端设备，由于这多个信息块通过第一DCI发送，即多个终端设备的DCI联合编码，相比现有技术中每一个终端设备的DCI都需要单独编码的方案，可以节省DCI的开销。
第二方面，提供一种通信方法，该方法的执行主体可以是网络设备也可以是应用于网络设备中的芯片。下面以执行主体是网络设备为例进行描述。网络设备发送第一DCI，所述第一DCI指示至少两个候选频域资源集合中的至少一个目标频域资源集合，所述至少一个目标频域资源集合中预定或预配置的部分频率资源包括第一频域资源信息对应的频域资源；所述网络设备在所述频域资源上进行数据接收或发送。采用这种方式的有益效果可以参考第一方面，在此不再赘述。
在第二方面的一种可能的设计中，所述方法还包括：发送第一传输块大小TBS信息和第一信息，所述第一TBS信息、第一信息用于指示第二信息；其中，所述第一信息和所述第二信息分别为第一调制与编码MCS信息和第一时域资源信息中任一信息，且所述第一信息和所述第二信息不同。采用这种方式的有益效果可以参考第一方面，在此不再赘述。
在第二方面的另一种可能的设计中，所述发送第一TBS信息，包括：向所述目标终端设备发送高层信令，所述高层信令中包括所述第一TBS信息。采用这种方式的有益效果可以参考第一方面，在此不再赘述。
在第二方面的另一种可能的设计中，所述发送第一TBS信息和第一信息，包括：发送第二DCI，所述第二DCI包括多个信息块，所述多个信息块中的一个信息块与所述目标终端设备对应，所述一个信息块包括第三指示信息，所述第三指示信息指示所述目标终端设备的第一资源块，所述第一资源块包括所述第一TBS信息和第一信息中至少一种，或者包括所述第一TBS信息和第一信息中至少一种信息中的部分信息；发送第二配置信息，所述第二配置信息包括所述目标终端设备对应的所述一个信息块的索引。采用这种方式的有益效果可以参考第一方面，在此不再赘述。
在第一方面或第二方面的一种可能的设计中，在所述至少一个目标频域资源信息集合为一个所述目标频域信息集合时，且所述目标频域信息集合中预设或预配置的频域资源包括多种频域资源配置方式，所述第一DCI包括第一指示信息，所述第一指示信息指示目标终端设备的频域资源的目标配置方式；和/或，在所述至少一个目标频域资源信息集合为多个所述目标频域信息集合时，且所述多个目标频域资源信息集合中的至少一个目标频域资源信息集合中预设或预配置的频域资源包括多种频域资源配置方式，所述第一DCI包括第二指示信息，所述第二指示信息指示所述目标终端设备的频域资源的目标配置方式，所述目标配置方式属于所述多种频域资源配置方式。采用这种设计，预设或预配置的频域资源可以包括多种频域资源配置方式，第一DCI中的指示信息可以从多种频域资源配置方式中指示一种作为目标终端设备的频域资源的目标配置方式，可以提高目标终端设备使用频域资源的灵活性。
在第一方面或第二方面的另一种可能的设计中，所述第二信息为所述第一时域资源信息时，所述第一时域资源信息与第一长度满足第一关联关系，所述第一长度是由所述第一TBS信息、所述第一MCS信息和所述第一频域资源信息确定的。采用这种设计，由于第一时域资源信息是终端设备自身通过第一TBS信息、第一MCS信息和第一频域资源信息确定的，相比于现有技术中需要网络设备通过DCI向终端设备指示第一时域资源信息的方案，可以进一步降低DCI的开销，从而可以提高通信系统的性能。
在第一方面或第二方面的另一种可能的设计中，所述第一长度表示所述第一时域资源信息中所包括的符号数。
在第一方面或第二方面的另一种可能的设计中，所述第二信息为所述第一MCS信息时，所述第一MCS信息中的频谱效率与第一频谱效率满足第二关联关系，所述第一频谱效由所述第一时域资源信息、所述第一频域资源信息和所述第一TBS信息相关。采用这种设计，由于第一MCS信息是终端设备自身通过第一时域资源信息、第一频域资源信息和第一TBS信息确定的，相比于现有技术中需要网络设备通过DCI向终端设备指示第一MCS信息的方案，可以降低DCI开销，从而可以提高通信系统的性能。
第三方面，提供一种通信方法，该方法的执行主体可以是终端设备，也可以是应用于终端设备中的芯片。下面以执行主体是终端设备为例进行描述。终端设备接收第一配置信息，所述第一配置信息包括目标终端设备的第一信息组集合；终端设备接收第一DCI，所述第一DCI包括多个目标信息块，所述多个目标信息块中的一个信息块与所述目标终端设备对应，所述一个信息块包括第一指示信息，所述第一指示信息用于激活所述目标终端设备的第一目标信息组，所述第一目标信息组属于所述第一信息组集合。可以看出，在本设计中，网络设备向目标终端设备发送的第一DCI可以包括多个目标信息块，该多个目标信 息块中的一个信息块可以对应目标终端设备，即多个终端设备的DCI联合编码，由于这多个目标信息块通过第一DCI发送，相比现有技术中每一个终端设备的DCI都需要单独编码的方案，可以节省DCI的开销。
在一种可能的设计中，所述方法还包括：接收第二配置信息，所述第二配置信息包括所述目标终端设备对应的所述一个信息块的索引。
在另一种可能的设计中所述第一信息组集合包括至少一个候选目标信息组，所述候选目标信息组包括第一传输块大小TBS信息、第一调制与编码MCS信息、第一时域资源信息或第一频域资源信息中的至少一种，或者包括所述第一TBS信息、所述第一MCS信息、所述第一时域资源信息或所述第一频域资源信息中的至少一种信息中的部分信息。
在另一种可能的设计中，所述第一信息组集合包括至少两个所述候选目标信息组，所述第一指示信息用于从所述至少两个候选目标信息组激活所述第一目标信息组。采用这个设计，由于候选目标信息组中的信息是通过第一配置信息配置的，第一指示信息可以从配置的信息中选择一种信息组进行激活，且该信息组中包括多个终端设备的信息，相比于现有技术中网络设备需要通过多个DCI频繁地向每一个终端设备指示信息块的方案，可以进一步节省DCI的开销。
在另一种可能的设计中，所述候选目标信息组包括所述第一TBS信息、所述第一MCS信息和所述第一时域资源信息，所述方法还包括：接收第二DCI，所述第二DCI指示至少两个候选频域资源集合中的至少一个目标频域资源集合，所述第一频域资源信息对应的频域资源为所述至少一个目标频域资源集合中预设或预配置的部分频域资源。采用这种方式的有益效果可以参考第一方面，在此不再赘述。
在另一种可能的设计中，当所述至少一个目标频域资源信息集合为一个所述目标频域信息集合时，且所述目标频域信息集合中预设或预配置的频域资源包括多种频域资源配置方式，所述第一DCI包括第二指示信息，所述第二指示信息指示所述目标终端设备的频域资源的目标配置方式；或者，当所述至少一个目标频域资源信息集合为多个所述目标频域信息集合时，且所述多个目标频域资源信息集合中的至少一个目标频域资源信息集合中预设或预配置的频域资源包括多种频域资源配置方式，所述第一DCI包括第三指示信息，所述第三指示信息指示所述目标终端设备的频域资源的目标配置方式，所述目标配置方式属于所述多种频域资源配置方式。采用这个设计，预设或预配置的频域资源可以包括多种频域资源配置方式，第一DCI中的指示信息可以从多种频域资源配置方式中指示一种作为目标终端设备的频域资源的目标配置方式，可以提高目标终端设备使用频域资源的灵活性。
在另一种可能的设计中，所述方法还包括：接收第四指示信息，所述第四指示信息指示所述目标终端设备终止使用所述第一目标信息组对应的目标资源。采用这种设计，由于目标终端设备在接收到第四指示信息前，均可以使用第一目标信息组对应的目标资源，因此，可以进一步节省DCI的开销，从而可以提高通信系统的性能。
第四方面，提供一种通信方法，该方法的执行主体可以是网络设备也可以是应用于网络设备中的芯片。下面以执行主体是网络设备为例进行描述。网络设备发送第一配置信息，所述第一配置信息包括目标终端设备的第一信息组集合；发送第一下行控制信息DCI，所述第一DCI包括多个终端设备的多个目标信息块，所述多个目标信息块中的一个信息块与所述目标终端设备对应，所述一个信息块包括第一指示信息，所述第一指示信息用于激活 所述目标终端设备的第一目标信息组，所述第一目标信息组属于所述第一信息组集合。
在一种可能的设计中，所述方法还包括：发送第二配置信息，所述第二配置信息包括所述目标终端设备对应的所述一个信息块的索引。
在另一种可能的设计中，所述第一信息组集合包括至少一个候选目标信息组，所述候选目标信息组包括第一传输块大小TBS信息、第一调制与编码MCS信息、第一时域资源信息或第一频域资源信息中的至少一种，或者包括所述第一TBS信息、所述第一MCS信息、所述第一时域资源信息或所述第一频域资源信息中的至少一种信息中的部分信息。
在另一种可能的设计中，所述第一信息组集合包括至少两个所述候选目标信息组，所述第一指示信息用于从所述至少两个候选目标信息组激活所述第一目标信息组。
在另一种可能的设计中，所述候选目标信息组包括所述第一TBS信息、所述第一MCS信息和所述第一时域资源信息，所述方法还包括：发送第二DCI，所述第二DCI指示至少两个候选频域资源集合中的至少一个目标频域资源集合，所述第一频域资源信息对应的频域资源为所述至少一个目标频域资源集合中预设或预配置的部分频域资源。
在另一种可能的设计中，当所述至少一个目标频域资源信息集合为一个所述目标频域信息集合时，且所述目标频域信息集合中预设或预配置的频域资源包括多种频域资源配置方式，所述第一DCI包括第二指示信息，所述第二指示信息指示所述目标终端设备的频域资源的目标配置方式；和/或，当所述至少一个目标频域资源信息集合为多个所述目标频域信息集合时，且所述多个目标频域资源信息集合中的至少一个目标频域资源信息集合中预设或预配置的频域资源包括多种频域资源配置方式，所述第一DCI包括第三指示信息，所述第三指示信息指示所述目标终端设备的频域资源的目标配置方式，所述目标配置方式属于所述多种频域资源配置方式。
在另一种可能的设计中，所述方法还包括：发送第四指示信息，所述第四指示信息指示所述目标终端设备终止使用所述第一目标信息组对应的目标资源。
第四方面的有益效果可以参考第三方面的有益效果，在此不再赘述。
第五方面，提供一种通信装置，有益效果可以参见第一方面的描述，在此不再赘述。所述通信装置具有实现上述第一方面的方法实施例中行为的功能。所述功能可以通过硬件实现，也可以通过硬件执行相应的软件实现。所述硬件包括一个或多个与上述功能相对应的模块。在一个可能的设计中，所述通信装置包括：收发模块，用于接收第一下行控制信息DCI，所述第一DCI指示至少两个候选频域资源集合中的至少一个目标频域资源集合，所述至少一个目标频域资源集合中预定或预配置的部分频率资源包括第一频域资源信息对应的频域资源；处理模块，用于在所述频域资源上进行数据接收或发送。这些模块可以执行上述第一方面方法示例中的相应功能，具体参见方法示例中的详细描述，此处不做赘述。
第六方面，提供一种通信装置，有益效果可以参见第三方面的描述此处不再赘述。所述通信装置具有实现上述第三方面的方法实例中行为的功能。所述功能可以通过硬件实现，也可以通过硬件执行相应的软件实现。所述硬件或软件包括一个或多个与上述功能相对应的模块。在一个可能的设计中，所述通信装置包括：处理模块，用于存储指令，用于指示所述收发模块接收第一配置信息，所述第一配置信息包括目标终端设备的第一信息组集合；以及接收第一下行控制信息DCI，所述第一DCI包括多个目标信息块，所述多个目 标信息块中的一个信息块与所述目标终端设备对应，所述一个信息块包括第一指示信息，所述第一指示信息用于激活所述目标终端设备的第一目标信息组，所述第一目标信息组属于所述第一信息组集合。这些模块可以执行上述第三方面方法示例中的相应功能，具体参见方法示例中的详细描述，此处不做赘述。
第七方面，提供一种通信装置，有益效果可以参见第二方面的描述此处不再赘述。所述通信装置具有实现上述第二方面的方法实例中行为的功能。所述功能可以通过硬件实现，也可以通过硬件执行相应的软件实现。所述硬件或软件包括一个或多个与上述功能相对应的模块。在一个可能的设计中，所述通信装置包括：收发模块，用于发送第一下行控制信息DCI，所述第一DCI指示至少两个候选频域资源集合中的至少一个目标频域资源集合，所述至少一个目标频域资源集合中预定或预配置的部分频率资源包括第一频域资源信息对应的频域资源；处理模块，用于在所述频域资源上进行数据接收或发送。这些模块可以执行上述第二方面方法示例中的相应功能，具体参见方法示例中的详细描述，此处不做赘述。
第八方面，提供一种通信装置，有益效果可以参见第四方面的描述此处不再赘述。所述通信装置具有实现上述第四方面的方法实例中行为的功能。所述功能可以通过硬件实现，也可以通过硬件执行相应的软件实现。所述硬件或软件包括一个或多个与上述功能相对应的模块。在一个可能的设计中，所述通信装置包括：处理模块，用于存储指令，用于指示收发模块发送第一配置信息，所述第一配置信息包括目标终端设备的第一信息组集合；以及发送第一DCI下行控制信息，所述第一DCI包括多个终端设备的多个目标信息块，所述多个目标信息块中的一个信息块与所述目标终端设备对应，所述一个信息块包括第一指示信息，所述第一指示信息用于激活所述目标终端设备的第一目标信息组，所述第一目标信息组属于所述第一信息组集合。这些模块可以执行上述第四方面方法示例中的相应功能，具体参见方法示例中的详细描述，此处不做赘述。
第九方面，提供了一种通信装置，该通信装置可以为上述方法实施例中的终端设备，或者为设置在终端设备中的芯片。该通信装置包括通信接口以及处理器，可选的，还包括存储器。其中，该存储器用于存储计算机程序或指令，处理器与存储器、通信接口耦合，当处理器执行所述计算机程序或指令时，使通信装置执行上述方法实施例中由终端设备所执行的方法。
第十方面，提供了一种通信装置，该通信装置可以为上述方法实施例中的网络设备，或者为设置在网络设备中的芯片。该通信装置包括通信接口以及处理器，可选的，还包括存储器。其中，该存储器用于存储计算机程序或指令，处理器与存储器、通信接口耦合，当处理器执行所述计算机程序或指令时，使通信装置执行上述方法实施例中由网络设备所执行的方法。
第十一方面，提供了一种计算机程序产品，所述计算机程序产品包括：计算机程序代码，当所述计算机程序代码并运行时，使得上述各方面中由终端设备执行的方法被执行。
第十二方面，提供了一种计算机程序产品，所述计算机程序产品包括：计算机程序代码，当所述计算机程序代码被运行时，使得上述各方面中由网络设备执行的方法被执行。
第十三方面，本申请提供了一种芯片系统，该芯片系统包括处理器，用于实现上述各方面的方法中终端设备的功能。在一种可能的设计中，所述芯片系统还包括存储器，用于 保存程序指令和/或数据。该芯片系统，可以由芯片构成，也可以包括芯片和其他分立器件。
第十四方面，本申请提供了一种芯片系统，该芯片系统包括处理器，用于实现上述各方面的方法中网络设备的功能。在一种可能的设计中，所述芯片系统还包括存储器，用于保存程序指令和/或数据。该芯片系统，可以由芯片构成，也可以包括芯片和其他分立器件。
第十五方面，本申请提供了一种计算机可读存储介质，该计算机可读存储介质存储有计算机程序，当该计算机程序被运行时，实现上述各方面中由终端设备执行的方法。
第十六方面，本申请提供了一种计算机可读存储介质，该计算机可读存储介质存储有计算机程序，当该计算机程序被运行时，实现上述各方面中由网络设备执行的方法。
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图1为本申请实施例提供的一种基于通信系统的示意图。
图2为本申请实施例提供的时域资源的指示的示意图。
图3为本申请实施例提供的频域资源的指示的示意图。
图4为本申请实施例提供的一种通信方法的流程示意图。
图5为本申请实施例提供的一种不同终端设备在子带上所配置的资源的示意图。
图6为本申请实施例提供的另一种不同终端设备在子带上所配置的资源的示意图。
图7为本申请实施例提供的另一种不同终端设备在子带上所配置的资源的示意图。
图8为本申请实施例提供的不同终端设备对应不同信息块的示意图。
图9为本申请实施例提供的另一种通信方法的流程示意图。
图10为本申请实施例提供的一种通信装置的示意性结构图。
图11为本申请实施例提供的另一种通信装置示意性结构图。
具体实施方式
本申请说明书和权利要求书及上述附图中的术语“第一”、“第二”和“第三”等是用于区别不同对象，而不是用于限定特定顺序。
在本申请实施例中，“示例性的”或者“例如”等词用于表示作例子、例证或说明。本申请实施例中被描述为“示例性的”或者“例如”的任何实施例或设计方案不应被解释为比其它实施例或设计方案更优选或更具优势。确切而言，使用“示例性的”或者“例如”等词旨在以具体方式呈现相关概念。
图1是本申请的实施例应用的移动通信系统的架构示意图。如图1所示，该移动通信系统包括核心网设备110、无线接入网设备120和至少一个终端设备(如图1中所示的终端设备130和终端设备140)。终端设备通过无线的方式与无线接入网设备相连，无线接入网设备通过无线或有线方式与核心网设备连接。核心网设备与无线接入网设备可以是独立的不同的物理设备，也可以是将核心网设备的功能与无线接入网设备的逻辑功能集成在同一个物理设备上，还可以是一个物理设备上集成了部分核心网设备的功能和部分的无线接入网设备的功能。终端设备可以是固定位置的，也可以是可移动的。图1只是示意图，该通信系统中还可以包括其它网络设备，如还可以包括无线中继设备和无线回 传设备，在图1中未画出。本申请的实施例对该移动通信系统中包括的核心网设备、无线接入网设备和终端设备的数量不做限定。
无线接入网设备是终端设备通过无线方式接入到该移动通信系统中的接入设备，可以是基站(base station)、演进型基站(evolved NodeB，eNodeB)、发送接收点(transmission reception point，TRP)、5G移动通信系统中的下一代基站(next generation NodeB，gNB)、未来移动通信系统中的基站或WiFi系统中的接入节点等；也可以是完成基站部分功能的模块或单元，例如，可以是集中式单元(central unit，CU)，也可以是分布式单元(distributed unit，DU)。本申请的实施例对无线接入网设备所采用的具体技术和具体设备形态不做限定。在本申请中，无线接入网设备简称网络设备，如果无特殊说明，网络设备均指无线接入网设备。如无线接入网设备120可以称为网络设备120。无线接入网设备130可以称为网络设备130。
终端设备也可以称为终端、用户设备(user equipment，UE)、移动台、移动终端等。终端设备可以是手机、平板电脑(Pad)、带无线收发功能的电脑、虚拟现实终端设备、增强现实终端设备、工业控制中的无线终端、无人驾驶中的无线终端、远程手术中的无线终端、智能电网中的无线终端、运输安全中的无线终端、智慧城市中的无线终端、智慧家庭中的无线终端等等。本申请的实施例对终端设备所采用的具体技术和具体设备形态不做限定。
本申请可以应用于5G新空口(new radio，NR)系统，也可以应用于其它的通信系统，只要该通信系统中存在实体需要发送传输方向指示信息，另一个实体需要接收该指示信息，并根据该指示信息确定一定时间内的传输方向。
网络设备和终端设备可以部署在陆地上，包括室内或室外、手持或车载；也可以部署在水面上；还可以部署在空中的飞机、气球和人造卫星上。本申请的实施例对网络设备和终端设备的应用场景不做限定。
网络设备和终端设备之间可以通过授权频谱(licensed spectrum)进行通信，也可以通过免授权频谱(unlicensed spectrum)进行通信，也可以同时通过授权频谱和免授权频谱进行通信。网络设备和终端设备之间可以通过6千兆赫(gigahertz，GHz)以下的频谱进行通信，也可以通过6GHz以上的频谱进行通信，还可以同时使用6GHz以下的频谱和6GHz以上的频谱进行通信。本申请的实施例对网络设备和终端设备之间所使用的频谱资源不做限定。
在本申请的各实施例中，时域符号可以是正交频分复用(orthogonal frequency division multiplexing，OFDM符号)，也可以是单载波频分复用(single carrier-frequency division multiplexing，SC-FDM)符号。如果没有特别说明，本申请实施例中的符号均指时域符号。
可以理解的是，本申请的实施例中，PUSCH只是作为上行数据信道的一种举例，在不同的系统和不同的场景中，数据信道可能有不同的名称，本申请的实施例对此并不做限定。
5G系统相比于前几代移动通信系统在传输速率、时延及功耗等方面都提出了更高的要求，可以应用于更为广阔的应用场景，包括且不限于自动驾驶，AR/VR，工厂业务，智能电网，物联网等方面。其中，URLLC作为5G通信系统中三大典型业务之一，在可靠 性和时延方面提出了更加严格的要求。
目前，终端设备的数据传输均可以通过网络设备调度。网络设备通过PDCCH中所承载的DCI的指示信息可以调度终端设备接收或者发送数据。其中，与数据信道相关的DCI可以包括以下几种格式，分别是格式0-0(Format 0-0)，Format 0-1，Format 1-0，Format1-1。具体而言是Format 0-0和Format 0-1可以用于上行数据信道的调度，Format 1-0和Format 1-1可以用于下行数据信道的指示。
其中，涉及到DCI的开销可以包括MCS信息、时域资源信息和频域资源信息的一种或多种，下文将分别进行说明。
1、传输块大小(transport block size，TBS)信息和MCS信息
网络设备可以通过DCI将MCS信息发送至目标终端设备，可以通过计算得到TBS信息，本申请实施例中的TBS可以是传输块(transport block，TB)中包含的数据的大小，即在一定的资源上承载的数据量或比特数。
为了便于理解本申请的方案，下文将详细介绍TBS的计算方法。
首先可以确定一个时隙中的资源元素(resource element，RE)数，利用公式(1)计算每一个物理资源块(physical resource block，PRB)可使用的RE数。
Figure PCTCN2021089920-appb-000001
其中，N' RE可以表示一个PRB上可以使用的RE数，
Figure PCTCN2021089920-appb-000002
可以表示一个PRB中频域上的载波数；
Figure PCTCN2021089920-appb-000003
可以表示一个时隙内物理上行共享信道(physical uplink shared channel，PUSCH)或物理下行共享信道(physical downlink shared channel，PDSCH)调度的符号数；
Figure PCTCN2021089920-appb-000004
可以表示一个PRB中的解调参考信号(demodulation reference signal，DMRS)所占的RE数，包括DMRS开销；
Figure PCTCN2021089920-appb-000005
可以表示高层参数物理上行共享信道-服务小区配置(PUSCH-ServingCellConfig)中的参数(xOverhead)配置的开销。
通过公式(2)获取用于计算TBS的RE数。
N RE＝min(156,N' RE)·n PRB    (2)
其中，N RE可以表示用于计算TBS的RE数，n PRB可以表示分配到的PRB的个数。
通过公式(3)得到信息比特数。
N info＝N RE·R·Q m·υ    (3)
其中，N info可以为信息比特数，R为码率，Q m调制阶数，υ为传输的层数。且R和Q m这两个参数是通过DCI中的MCS域所指示的值在协议表中可以查到的。
如果N info≤3824，通过公式(4)计算信息比特的量化中间值。
Figure PCTCN2021089920-appb-000006
其中，N' inf o可以表示信息比特的量化中间值，n＝max(3,[log 2(N inf o)]-6)，在协议表中查找不小于N' inf o最近的一个值作为TBS。
如果，N inf o>3824，通过公式(5)计算信息比特的量化中间值。
Figure PCTCN2021089920-appb-000007
其中，
Figure PCTCN2021089920-appb-000008
如果码率R≤1/4，则可以基于公式(6)计算TBS。
Figure PCTCN2021089920-appb-000009
其中，
Figure PCTCN2021089920-appb-000010
否则，可以基于公式(7)计算TBS。
Figure PCTCN2021089920-appb-000011
其中，
Figure PCTCN2021089920-appb-000012
2、时域资源信息和频域资源信息
(1)、时域资源信息
对于PDSCH时域资源信息可以通过DCI进行指示。其中，时域资源信息可以包括映射方式，K 0，S，L。其中，映射方式可以包括类型A和类型B，K 0可以表示PDSCH相对于和其对应的PDCCH的时隙间隔，S和L分别表示在K 0指示的时隙中的起始位置和长度。具体如图2中的(a)所示。
为了便于理解本申请的方案，下文先对映射方式包括的类型进行简单说明。
类型A表示在一个时隙内，PDSCH占用的符号可以从{0，1，2，3}符号位置开始，符号长度为3-14个符号(不能超过时隙边界)。对于这种分配方式，分配的时域符号数较多，适用于大带宽场景。典型应用场景可以为：时隙内符号0-2位PDCCH，符号3-13位PDSCH，即占满整个时隙，因此类型A也通常可以称为基于时隙的调度。
类型B表示在一个时隙内，PDSCH占用的符号从{0,1,…,12}符号位置开始，但符号长度限定为{2,4,7}个符号(不能超过时隙边界)。对于这种分配方式，PDSCH起始符号位置可以灵活配置，分配符号数量少，时延短，适用于低时延(low latency，LL)和高可靠(ultra reliability，UR)场景，实现URLLC应用。因此类型B也通常可以称为非基于时隙(non slot based)调度的类型。
若PDCCH中携带的DCI选择高层预配置的表格中的某一行，作为PDSCH的时域资源。以下表为例。例如，当PDCCH中携带的DCI指示行索引(index)为1，解调参考信号(demodulation reference signal，DMRS)位置(也可以称为dmrs-TypeA-Position)为2时，则从表1中可以看出，K 0＝0，S＝2，L＝12。
表1
Figure PCTCN2021089920-appb-000013
Figure PCTCN2021089920-appb-000014
应理解，表1只是示例性的，不应该对时域资源表格产生任何的限制。
(2)频域资源信息
对于PDSCH频域资源信息也可以通过PDCCH中携带的DCI进行指示。对于频域资源的指示可以有两种指示方式。
第一种方式是类型0，该指示方式的频域粒度为资源块组(resource block groups，RBG)。以带宽为10资源块(resource block，RB)，RBG大小为2为例进行说明，如图3中的(a)所示。每个资源块组的大小为2个RB，因此，可以将10个RB分为5组。通过比特的形式可以指示PDSCH占用的频域资源。以PDCCH中指示信息为10001为例，则PDSCH占用RBG0和RBG4。
第二种方式是类型1，该指示方式是连续分配的。PDCCH中可以指示频域的RB start和L RB，RB start可以表示占用RB的起始位置，L RB可以表示占用RB的长度。以带宽为10RB为例，如图3中的(b)所示，若RB start＝2，L RB＝3，则表示PDSCH占用的频域资源可以包括RB2，RB3，RB4。
上文简单说明了下行数据信道的时域和频域资源信息的指示，下文将说明上行数据信道的时域和频域资源信息的指示，关于上行数据信道的时域和频域资源信息的指示与下行数据信道的时域和频域资源信息的指示类似，存在一点区别，下文将详细进行描述。
对于PUSCH的时域资源信息的指示类似于PDSCH时域资源信息的指示，区别在于相对于数据信道对应的PDCCH的时隙偏移。对于下行数据信道而言，时隙偏移可以用K 0表示，对于上行数据信道而言，时隙偏移可以用K 2表示，具体详见下文。
PUSCH可以通过PDCCH进行调度。其中，DCI格式0-0和格式0-1可以用于调度 PUSCH。DCI中的时域资源分配(time domain resource assignment)可以对应资源分配表中的行。资源分配表中的每一行可以包括三个信息，分别是K 2，起始符号和长度，映射类型。用S可以表示PUSCH的起始符号，L可以表示PUSCH占据的符号长度，
映射类型可以包括类型A和类型B，与上文中所表示的类型类似，为了简介，这里不赘述。
同样地，对于PUSCH的时域资源信息也可以包括映射方式，K 2，S，L。其中，K 2可以表示PUSCH相对于和其对应的PDCCH的时隙间隔，S和L可以分别表示在K 2指示的时隙中的起始位置和长度，参考图2中的(b)。
若PDCCH中携带的DCI选择高层预配置的表格中的某一行，作为PUSCH的时域资源。以表2为例，例如，当PDCCH中携带的DCI指示行索引(index)为1时，则从表2中可以看出，时域资源信息中的K 2＝j，S＝0，L＝14，其中，j可以通过子载波间隔确定，如表3所述。
表2
行索引 PUSCH映射类型 K 2 S L
1 类型A j 0 14
2 类型A j 0 12
3 类型A j 0 10
4 类型B j 2 10
5 类型B j 4 10
6 类型B j 4 8
7 类型B j 4 6
8 类型A j+1 0 14
9 类型A j+1 0 12
10 类型A j+1 0 10
11 类型A j+2 0 14
12 类型A j+2 0 12
13 类型A j+2 0 10
14 类型B j 8 6
15 类型A j+3 0 14
16 类型A j+3 0 10
表3
μPUSCH j
0 1
1 1
2 2
3 3
类似地，表2和表3也只是示例性的，不应该对时域资源表格产生任何的限制。
对于PUSCH频域资源信息的指示与PDSCH资源信息的指示类似，为了简洁，这里 不再赘述。
在很多URLLC的业务场景中，数据多为小包业务，例如为200比特(bit)，而DCI的开销需要20bit，此时DCI的开销在小包业务中占有10％，严重时可能高达20％，限制了通信系统的性能。因此，如何有效降低DCI开销是需要解决的一项问题。
如图4所示，本申请实施例提供一通信方法的流程示意图，该方法可以由终端设备和网络设备执行，或者也可以由终端设备中的芯片和网络设备中的芯片执行。该通信方法400可以包括：
S410，网络设备向终端设备发送第一DCI，所述第一DCI指示至少两个候选频域资源集合中的至少一个目标频域资源集合，所述至少一个目标频域资源集合中预定或预配置的部分频率资源包括第一频域资源信息对应的频域资源。
S420，所述网络设备在所述频域资源上进行数据接收或发送。
其中，该步骤S410-S420可以由图1中的核心网设备110和/或无线接入网设备120执行。
S430，所述终端设备接收第一DCI。
S440，所述终端设备在所述频域资源上进行数据接收或发送。
其中，该步骤S430-S440可以由图1中的终端设备130和/或终端设备140执行。
需要特别说明的是，上述示例执行先后顺序只是一个举列，上述示例的执行顺序也可以S410、S430、S420、S440或者也可以是S410、S430、S440、S420。对于上述示例的执行步骤本申请不做具体的限定。
本申请实施例中的候选频域资源集合可以包括多个子带，其中，至少一个终端设备占用的子带情况、多个子带中的每一个子带所占用的频域资源以及至少一个终端设备在每一个子带上的配置方式均可以由网络设备预先配置。网络设备可以知道至少一个终端设备中每一个终端设备的频域资源情况；而对于终端设备来说，至少一个终端设备中每一个终端设备可以知道自己的频域资源情况，并不了解其它终端设备的频域资源情况。
如图5中的(a)所示，为本申请实施例提供的一种不同终端设备在子带上所配置的资源的示意图。其中，至少一个终端设备占用的子带情况可以包括至少一个终端设备中每一个终端设备占用的子带，例如，如图5中的(a)所示，终端设备1占用2个子带，分别为子带1和子带2；子带1上占用的频域资源包括RB0、RB1、RB2、RB3、RB4、RB5、RB6和RB8，子带2上占用的频域资源包括RB0、RB1、RB2、RB3、RB4、RB5、RB6和RB7；进一步，图5中的(a)还示出了终端设备占用的子带的配置方式，例如，终端设备1在子带1上占用RB0和RB1，终端设备1在子带2上占用RB3。
例如，第一DCI可以指示子带1，则第一频域资源信息可以是子带1中的部分频域资源，假设目标终端设备为终端设备1，则目标终端设备可以确定RB0和RB1为第一频域资源信息对应的频域资源；若第一DCI指示子带2，则第一频域资源信息可以是子带2中的部分频域资源，假设目标终端设备为终端设备1，则目标终端设备可以确定RB3为第一频域资源信息对应的频域资源。
需要说明的是，本申请实施例中，每一个子带中分配的RB数目可以相同，也可以不同。例如，子带1和子带2所分配的RB数目均可以为10；或者子带1所分配的数目可以为9，子带2所分配的数目可以为10；对此，不申请不作做限制。
此外，本申请实施例中的预设或预配置的部分频域资源，可以是指子带中的频域资源不连续(或者也可以称为离散)。本申请中的不连续的频域资源可以是指频域资源并未占满整个子带，例如，终端设备5在子带1中的频域资源包括RB4、RB5和RB6，在子带2中的频域资源包括RB1、RB2和RB5、RB6和RB7，均可以认为频域资源不连续。
在一些实施例中，候选频域资源信息集合中有可能只包括一个子带。如图5中的(b)所示，在这种情况下，子带所占用的频域资源以及至少一个终端设备在这一个子带上的配置方式均可以预先配置。
如图5中的(b)所示，为本申请另一实施例提供的不同终端设备在子带上所配置的资源的示意图。子带1频域资源包括RB0、RB1、RB2、RB3、RB4、RB5、RB6和RB8；终端设备1在子带1上占用的频域资源为RB0和RB1，终端设备2在子带1上占用的频域资源为RB0、RB1和RB2。
本申请提供的方案，通过预设或配置的方式，向终端设备指示出目标资源集合的部分资源可以用来进行数据数据接收或发送，从而可以灵活的设定目标资源集合的大小，相比现有技术中向终端设备指示的目标资源集合的全部资源都用于进行数据传输的方案，更能够节省DCI的开销。例如，若有10个RB，现有技术中可以将这10个RB划分为5组，网络设备需要用5比特的开销通过DCI将这10个RB指示给终端设备；而本申请的方案可以将这10个RB划分为2个组，网络设备可以预设或预配置其中一个组的前2个RB可以用于终端设备传输数据，因此，网络设备可以用2比特的开销通过第一DCI向终端设备进行指示。此外，目标频域资源集合中的频域资源是网络设备预设或预配置的，在不同的时段可以有多种配置方式，可以提高目标终端设备使用频域资源的灵活性。
在一些情况下，终端设备在一个子带上可以包括多种配置方式，基于此，第一DCI中包括的第一指示信息还可以指示目标配置方式，具体详见下文。
示例性的，在所述至少一个目标频域资源信息集合为一个所述目标频域信息集合时，且所述目标频域信息集合中预设或预配置的频域资源包括多种频域资源配置方式，所述第一DCI包括第一指示信息，所述第一指示信息指示目标终端设备的频域资源的目标配置方式；和/或，
在所述至少一个目标频域资源信息集合为多个所述目标频域信息集合时，且所述多个目标频域资源信息集合中的至少一个目标频域资源信息集合中预设或预配置的频域资源包括多种频域资源配置方式，所述第一DCI包括第二指示信息，所述第二指示信息指示所述目标终端设备的频域资源的目标配置方式，所述目标配置方式属于所述多种频域资源配置方式。
如图6所示，为本申请另一实施例提供的不同终端设备在子带上所配置的资源的示意图。目标频域资源集合为子带1，且终端设备1的配置方式可以包括配置方式1、配置方式2和配置方式3，终端设备2的配置方式可以包括配置方式4和配置方式5，终端设备3的配置方式可以包括配置方式6，其中，每一种配置方式对应的所占用的频域资源可以相同，也可以不同，不予限制。
若目标终端设备为终端设备1，则第一DCI中的第一指示信息还用于指示目标终端设备的频域资源的目标配置方式。例如，若第一指示信息指示配置方式1为目标配置方式，则目标终端设备可以用RB0和RB1发送或接收数据。
可以理解的是，若目标终端设备为终端设备3，由于终端设备3在子带1上仅包括配置方式6，因此，第一指示信息可以不再指示目标配置方式，终端设备3可以用RB3、RB5和RB8发送或接收数据。
至少一个目标频域资源集合包括多个目标频域资源集合，即包括多个子带，例如，包括两个子带，如图7所示，为本申请另一实施例提供的不同终端设备在子带上所配置的资源的示意图。目标频域资源集合包括子带1和子带2，且终端设备1的配置方式可以包括配置方式1、配置方式2和配置方式3，终端设备2的配置方式可以包括配置方式4和配置方式5，终端设备3的配置方式可以包括配置方式6，其中，每一种配置方式对应的所占用的频域频域可以相同，也可以不同，不予限制。
例如，若目标终端设备为终端设备1，则第一DCI中的第二指示信息还用于指示目标终端设备的频域资源的目标配置方式，例如，若第二指示信息指示配置方式1为目标配置方式，则目标终端设备可以用子带1上的RB0和RB1或子带2上的RB3发送或接收数据；若第二指示信息指示配置方式3为目标配置方式，则目标终端设备可以用子带1上的RB1或子带2上的RB3、RB4、RB5和RB6发送或接收数据。
可以理解的是，若目标终端设备为终端设备3，由于终端设备3在仅包括配置方式6，因此，第二指示信息可以不再指示目标配置方式，终端设备3可以用子带1上的RB3、RB5和RB8或子带2上的RB2、RB3和RB5发送或接收数据。这些仅是为了理解本申请所举的例子，本申请包括并不限于上述举例。
本申请实施例提供的方案，预设或预配置的频域资源可以包括多种频域资源配置方式，第一DCI中的指示信息可以从多种频域资源配置方式中指示一种作为目标终端设备的频域资源的目标配置方式，可以提高目标终端设备使用频域资源的灵活性。
示例性的，所述方法还包括：网络设备向终端设备发送第一TBS信息和第一信息，所述第一TBS信息、第一信息用于指示第二信息。相应的，所述终端设备接收第一TBS信息和第一信息；所述终端设备根据所述第一TBS信息、第一信息和所述第一频域资源信息确定第二信息。
其中，所述第一信息和所述第二信息分别为第一MCS信息和第一时域资源信息中任一信息，且所述第一信息和所述第二信息不同。
例如，第一信息可以为第一MCS信息和第二信息为第一时域资源信息，或者，第一信息可以为第一时域资源信息和第二信息为第一MCS信息，本申请对此不作具体限制。
本申请实施例提供的方案，目标终端设备可以根据接收到的第一TBS信息、第一信息和第一频域资源信息确定第二信息，由于第二信息是终端设备自身通过多个信息确定的，不需要网络设备通过DCI指示，因而可以降低网络设备采用DCI指示第二信息的开销，从而可以提高通信系统的性能。
示例性的，所述网络设备可以向所述目标终端设备发送高层信令，所述高层信令中包括所述第一TBS信息。相应的，所述目标终端设备接收所述高层信令。
所述高层信令可以是媒体接入控制(media access control，MAC)层的信令或无限资源控制(radio resource control，RRC)层的信令等，本申请对此不作具体限定。
本申请实施例提供的方案，由于第一TBS信息在一段时间内一般是固定不变的，网络设备可以通过半静态配置的高层信令向终端设备发送第一TBS信息，相比现有技术中 网络设备需要频繁地通过DCI向终端设备指示MCS信息、时域资源信息和频域资源信息，以使得终端设备根据这多个信息确定第一TBS信息的方案，从而可以进一步降低网络设备的开销。
示例性的，所述第二信息为所述第一时域资源信息时，所述第一时域资源信息与第一长度满足第一关联关系，所述第一长度是由所述第一TBS信息、所述第一MCS信息和所述第一频域资源信息确定的。例如，所述第一长度可以表示为所述第一时域资源信息中所包括的符号数。或者，所述第一长度也可以为上文中提到的时域资源信息的长度L。
其中，第一关联关系可以是指第一长度与第一时域资源信息中的长度相同；或者可以是第一长度与第一时域资源信息中的长度的差值最小。
其中，第一关联关系可以是默认的，也可以是基于优先原则从多个时域资源信息中选择的，也可以是从多个时域资源信息中选择在n个符号之后的对应的资源信息，其中，n值可以是预设置的。
相应的，目标终端设备可以基于接收到的第一频域资源信息、第一MCS信息和第一TBS信息确定第一长度，根据第一长度从预先配置的时域资源信息集合中确定第一时域资源信息。网络设备可以将预先配置的时域资源信息集合发送至目标终端设备。其中，时域资源信息集合中的每一个时域资源信息可以包括资源指示类型、频域资源映射方式、时域资源的资源指示值、时域资源起始位置或占用的长度中的一种或多种。
目标终端设备可以通过第一MCS信息和第一TBS信息确定所需要RE，结合第一频域资源信息，可以得到所需要的第一长度L，再从预先配置的时域资源信息集合中选择一个时域资源信息作为目标终端设备的第一时域资源信息。
例如，假设预先配置的时域资源信息集合中包括3种时域资源信息，分别为时域资源信息A、B和C，这3种资源信息对应的长度L分别为1、6和8。若通过上述计算确定的第一长度为6，由于在这3种资源信息中，在保证第一长度与第一时域信息中的长度相同的情况下，第一长度与时域资源信息B中的长度相同，则目标终端设备可以选择时域资源信息B作为第一时域资源信息；若通过上述计算确定的第一长度为2，由于在这3种资源信息中，在保证差值最小的情况下，第一长度与时域资源信息A对应的长度的差值最小，则目标终端设备可以选择时域资源信息A作为第一时域资源信息。
在一些实施例中，预先配置的时域资源信息集合中有多个资源信息均满足上述条件，可以基于预先设定的准则进行选择。例如，终端设备或网络设备可以默认某一种时域资源信息为第一时域资源信息，终端设备也可以基于优先原则选择某一种时域资源信息为第一时域资源信息，终端设备还可以从多个时域资源信息中选择第一时域资源信息。
例如，假设预先配置的时域资源信息集合中包括5种时域资源信息，分别为时域资源信息A、B、C、D和E，这5种时域资源信息所包括的的长度L分别为1、6、6、8、12。若根据上述步骤确定的第一长度L为6，确定第一时域资源信息的选择范围为B和C，在这种情况下，一种方式是终端设备可以默认选择时域资源信息B为目标终端设备的第一时域资源信息或者默认选择时域资源信息C为目标终端设备的第一时域资源信息。另外一种方式是终端设备可以基于优先原则选择，例如，可以预先配置时域资源信息B优于时域资源信息C，则可以选择时域资源信息B作为目标终端设备的第一时域资源信息。例如，时域资源信息B和C分别对应一个K 0，在这种场景下，可以选择n个符号之后的时域资源 信息B或C分别对应的K 0值最小的时域资源信息做为第一时域资源信息；或时域资源信息B和C分别对应相同的K 0，则进一步选择时域资源信息B或C所对应的S值最小的时域资源信息做为第一时域资源信息。
本申请实施例提供的技术方案，由于第一时域资源信息是终端设备自身通过第一TBS信息、第一MCS信息和第一频域资源信息确定的，相比于现有技术中网络设备需要通过DCI向终端设备指示第一时域资源信息的方案，可以进一步降低网络设备采用DCI指示第一时域资源信息的开销，从而可以提高通信系统的性能。
需要说明的是，本申请实施例是以下行数据信道的时域资源信息进行描述的，对于上向数据信道的时域资源信息类似，区别在于下行数据信道的时域资源信息中的时隙偏移用K 2表示，上行数据信道的时域资源信息中的时隙偏移用K 0表示，为了简洁，这里不再赘述。
示例性的，所述第二信息为所述第一MCS信息时，所述第一MCS信息中的频谱效率与第一频谱效率满足第二关联关系，所述第一频谱效率由所述第一时域资源信息、所述第一频域资源信息和所述第一TBS信息确定的。
本申请实施例中，第一时域资源信息可以包括时域资源的起始符号S和长度L，时域资源起始和长度指示值(start and length indicator value，SLIV)，或时域资源的映射方式中的一种或多种；本申请实施例中的第一频域资源信息可以包括频域资源指示类型、频域资源的映射方式、频域资源的资源指示值(resource indicator value，RIV)、频域资源起始RB或占用的RB长度L RB或频域资源的位图中的一种或多种。
其中，第二关联关系可以是指第一频谱效率与第一MCS信息中的频谱效率相同；或者可以是第一频谱效率与第一MCS信息中的频谱效率的差值最小。
目标终端设备可以根据接收到的信息确定第一频谱效率，根据第一频谱效率从预设表格中确定第一MCS信息，具体请参见下文。
首先，目标终端设备可以根据第一时域资源信息和第一频域资源信息计算得到承载数据的RE数。具体地，可以根据上述公式(2)得到N RE，再根据公式(8)得到频谱效率μ。
μ＝N TB/N RE    (8)
其中，N TB可以表示TBS，单位为比特。
目标终端设备通过计算得到频谱效率μ后，可以根据频谱效率μ从MCS表格4中选择与该第一频谱效率μ差值最小的频谱效率所对应的调制阶数Q m和码率R。应理解，表4也只是示例性的，不应该对MCS表格产生任何的限制。
表4
Figure PCTCN2021089920-appb-000015
Figure PCTCN2021089920-appb-000016
假设目标终端设备通过上述公式计算得到频谱效率为1.1，则通过查找表4可知，调制阶数Q m可以为2，码率R*[1024]可以为602，则对应的码率R可以为0.5879。
本申请实施例提供的技术方案，由于第一MCS信息是终端设备自身通过第一时域资源信息、第一频域资源信息和第一TBS信息计算得到的，相比于现有技术中网络设备需要通过DCI向终端设备指示第一MCS信息的方案，可以降低网络设备采用DCI指示第一MCS信息的开销，从而可以提高通信系统的性能。
示例性的，网络设备向目标终端设备发送第二DCI，所述第二DCI包括多个信息块，所述多个信息块中的一个信息块与所述目标终端设备对应，所述一个信息块包括第三指示信息，所述第三指示信息指示所述目标终端设备的第一资源块，所述第一资源块包括所述第一TBS信息、所述第一MCS信息和所述第一时域资源信息中的至少一种，或者包括所述第一TBS信息、所述第一MCS信息和所述第一时域资源信息中至少一种信息中的部分信息；以及发送第二配置信息，所述第二配置信息包括所述目标终端设备对应的所述一个信息块的索引。相应的，所述目标终端设备接收所述第二DCI和所述第二配置信息。
具体地，网络设备可以向目标终端设备发送第二DCI和第二配置信息。相应的，目标终端设备可以根据第二DCI中的一个信息块所包括的第三指示信息和第二配置信息中包括的一个信息块的索引确定接收的信息的内容。
需要说明的是，本申请实施例中的第一资源块可以包括第一TBS信息、第一MCS信息或第一时域资源信息中的至少一种，例如，第一资源块可以包括第一TBS信息；或者可以包括第一TBS信息和第一MCS信息；或者可以包括第一TBS信息和第一MCS信息和第一时域资源信息。应理解，在上述第一资源块包括一种或多种信息的情况下，所包括 的信息仅为举例说明，还可以为其它信息，为了简洁，这里不再赘述。
本申请实施例中的第一资源块也可以包括第一TBS信息、第一MCS信息和第一时域资源信息中的至少一种信息中的部分信息。若第一资源块包括一种信息的部分信息，则第一资源块可以为第一TBS信息中的部分信息，或者，第一资源块可以为第一MCS信息中的部分信息，或者，第一资源块可以为第一时域资源信息中的部分信息。若第一资源块可以包括两种信息的部分信息，则第一资源块可以包括这两种信息中的每一种信息的部分信息，或者，包括这两种信息中的其中一种信息的部分信息。以第一TBS信息和第一MCS信息为例，第一资源块可以包括第一TBS信息的部分信息和第一MCS信息中的部分信息；或者，第一资源块可以包括第一TBS信息的部分信息和第一MCS信息；或者，第一资源块可以包括第一TBS信息和第一MCS信息的部分信息。本申请对此不作具体限定。
对于其它可能，与上述所举的例子类似，为了简洁，这里不再赘述。
若第一资源块也可以包括三种信息的部分信息，则第一资源块可以包括这三种信息中的每一种信息的部分信息，或者，包括这三种信息中的至多两种信息的部分信息。例如，第一资源块可以包括第一TBS信息的部分信息、第一MCS信息的部分信息和第一时域资源信息中的部分信息；或者，第一资源块也可以包括第一TBS信息、第一MCS信息的部分信息和第一时域资源信息中的部分信息，或者，第一资源块可以包括第一TBS信息的部分信息、第一MCS信息和第一时域资源信息中的部分信息，或者，第一资源块可以包括第一TBS信息的部分信息、第一MCS信息的部分信息和第一时域资源信息。
此外，本申请实施例中，第二DCI包括多个信息块，其中，该多个信息块中的一个信息块与目标终端设备对应，该多个信息块中的其它信息块可以与其它终端设备对应。
例如，如图8中的(a)所示，第二DCI包括多个信息块，分别为信息块1，信息块2，信息块3，信息块4和信息块5，从图中可以看出，终端设备1占用信息块1，终端设备2占用信息块2，终端设备3占用信息块3，终端设备4占用信息块4，终端设备5占用信息块5，若终端设备1为本申请实施中的目标终端设备，则目标终端设备占用信息块1。
目标终端设备确定占用的信息块可以通过第二配置信息中包括的目标终端设备对应的信息块的索引确定，若标识“0、1、2、3、4”分别对应图中的信息块1、信息块2，信息块3，信息块4和信息块5，网络设备可以向目标终端设备发送标识“0”，目标终端设备可以确定信息块1为本申请中的一个信息块。
可以理解的是，上述图仅为示例性说明，多个终端设备中的不同终端设备所占用的信息块不局限于上图中所示出的，还可以为其它方式，不予限制。
例如，如图8中的(b)所示，终端设备1可以占用信息块1和信息块2，终端设备2可以占用信息块3和信息块4，终端设备3可以占用信息块5。
例如，如图8中的(c)所示，终端设备1和终端设备2均可以占用信息块1和信息块2，终端设备3可以占用信息块3、信息块4和信息块5。
需要说明的是，由于至少一个终端设备所占用的信息块是由网络设备配置的，因此，网络设备可以知道至少一个终端设备中每一个终端设备所占用的信息块；而对于终端设备来说，至少一个终端设备中每一个终端设备可以知道自己占用的信息块，并不了解其它终端设备占用的信息块。
本申请实施例提供的通信方法，网络设备向目标终端设备发送的第二DCI可以包括多 个目标信息块，该多个目标信息块中的一个信息块可以对应目标终端设备，即多个终端设备的DCI联合编码，相比现有技术中每一个终端设备的DCI都需要单独编码的方案，可以节省DCI的开销。
如图9所示，本申请实施例提供的另一种通信方法的流程示意图，该通信方法可以由终端设备和网络设备执行，或者也可以由终端设备中的芯片和网络设备中的芯片执行。该通信方法900可以包括：
S910，网络设备向终端设备发送第一配置信息，所述第一配置信息包括目标终端设备的第一信息组集合。
S920，所述终端设备接收所述第一配置信息。
本申请实施例中，网络设备可以通过高层信令向目标终端设备发送第一配置信息，即网络设备可以向目标终端设备发送高层信令，该高层信令中可以包括第一配置信息。
本申请实施例中的高层信令可以是MAC层的信令或RRC层的信令等，本申请对此不作具体限定。
S930，所述网络设备向所述终端设备发送第一DCI，所述第一DCI包括多个终端设备的多个目标信息块，所述多个目标信息块中的一个信息块与所述目标终端设备对应，所述一个信息块包括第一指示信息，所述第一指示信息用于激活目标终端设备的第一目标信息组，所述第一目标信息组属于所述第一信息组集合。
S940，所述终端设备接收第一DCI。
需要特别说明的是，上述示例执行先后顺序只是一个举列，上述示例的执行顺序也可以是S910、S930、S920、S940。对于上述示例的执行步骤本申请不做具体的限定。
本申请实施例中的第一DCI可以包括多个目标信息块，且该多个目标信息块中的一个信息块可以与目标终端设备对应，该多个目标信息块中的其它目标信息块可以与其它终端设备对应。具体情况可以参图8中的(a)所示，在此不再赘述。
可以理解的是，上述图仅为示例性说明，多个终端设备中的不同终端设备所占用的信息块不局限于上图中所示出的，还可以为其它方式，如上述图8中的(b)和(c)所示，不予限制。具体内容可以参考上述对图8中的(b)和(c)的描述，这里不再赘述。
本申请实施例中的一个信息块中包括的第一指示信息可以激活第一目标信息组，该第一目标信息组可以是一个，也可以是多个，不予限制。
需要说明的是，由于至少一个终端设备所占用的信息块是由网络设备配置的，因此，网络设备可以知道至少一个终端设备中每一个终端设备所占用的信息块；而对于终端设备来说，至少一个终端设备中每一个终端设备可以知道自己占用的信息块，并不了解其它终端设备占用的信息块。
本申请实施例提供的通信方法，网络设备向目标终端设备发送的第一DCI可以包括多个目标信息块，该多个目标信息块中的一个信息块可以对应目标终端设备，即多个终端设备的DCI联合编码，相比现有技术中每一个终端设备的DCI都需要单独编码的方案，可以节省DCI的开销。
示例性的，所述网络设备还可以向目标终端设备发送第二配置信息，所述第二配置信息包括所述目标终端设备对应的所述一个信息块的索引。相应的，所述目标终端设备可以接收所述第二配置信息。
本申请实施例中，目标终端设备确定占用的信息块可以通过第二配置信息中包括的目标终端设备对应的信息块的索引确定，若标识“0、1、2、3、4”分别对应图中的信息块1、信息块2，信息块3，信息块4和信息块5，网络设备可以向目标终端设备发送标识“0”，目标终端设备可以确定信息块1为本申请中的一个信息块。
示例性的，所述第一信息组集合包括至少一个候选目标信息组，所述候选目标信息组包括第一TBS信息、第一MCS信息、第一时域资源信息或第一频域资源信息中的至少一种，或者包括所述第一TBS信息、所述第一MCS信息、所述第一时域资源信息或所述第一频域资源信息中的至少一种信息中的部分信息。
本申请实施例中的候选目标信息组可以包括第一TBS信息、第一MCS信息、第一时域资源信息或第一频域资源信息中的至少一种，例如，候选目标信息组可以包括第一TBS信息；或者可以包括第一TBS信息和第一MCS信息；或者可以包括第一TBS信息和第一MCS信息和第一时域资源信息；或者可以包括第一TBS信息、第一MCS信息、第一时域资源信息和第一频域资源信息。应理解，在上述候选目标信息组包括一种或多种信息的情况下，所包括的信息仅为举例说明，还可以为其它信息，为了简洁，这里不再赘述。
本申请实施例中的候选目标信息组可以包括第一TBS信息、第一MCS信息、第一时域资源信息或第一频域资源信息中的至少一种信息中的部分信息。例如，候选目标信息组可以包括第一TBS信息中的部分信息；或者可以包括第一MCS信息中的部分信息，或者可以包括第一时域资源信息中的部分信息，或者可以包括第一频域资源信息中的部分信息。
若候选目标信息组可以包括两种信息的部分信息，则候选目标信息组可以包括这两种信息中的每一种信息的部分信息，或者，也可以包括这两种信息的其中一种信息的部分信息。以第一TBS信息和第一MCS信息为例，候选目标信息组可以包括第一TBS信息的部分信息和第一MCS信息中的部分信息；或者，可以包括第一TBS信息和第一MCS信息中的部分信息；或者，可以包括第一TBS信息中的部分信息和第一MCS信息。
至于其它可能，与上述所举的例子类似，为了简洁，这里不再赘述。
若候选目标信息组可以包括三种信息的部分信息，则候选目标信息组可以包括这三种信息中的每一种信息的部分信息，或者，包括这三种信息中的至多两种信息的部分信息。以第一TBS信息、第一MCS信息和第一时域资源信息为例，候选目标信息组可以包括第一TBS信息的部分信息、第一MCS信息的部分信息和第一时域资源信息中的部分信息；或者可以包括第一TBS信息、第一MCS信息的部分信息和第一时域资源信息中的部分信息；或者可以包括第一TBS信息的部分信息、第一MCS信息和第一时域资源信息中的部分信息；或者可以包括第一TBS信息的部分信息、第一MCS信息的部分信息和第一时域资源信息。
至于其它可能，与上述所举的例子类似，为了简洁，这里不再赘述。
若候选目标信息组也可以包括四种信息的部分信息，则候选目标信息组可以包括这四种信息中的每一种信息的部分信息，或者，包括这四种信息中的至多三种信息的部分信息。该实现方式与上述类似，为了简洁，这里不再赘述。
示例性的，若所述第一信息组集合包括至少两个所述候选目标信息组，所述第一指示信息用于从所述至少两个候选目标信息组激活所述第一目标信息组。
本申请实施例中，在第一信息组集合包括多个候选目标信息组的情况下，第一指示信息可以从这多个候选目标信息组中激活一个或多个作为目标终端设备的第一目标信息组。
假设第一信息组集合中包括2个候选目标信息组，则第一指示信息可以从这2个候选目标信息组中激活一个或两个作为目标终端设备的第一目标信息组。例如，假设第一信息组集合中包括2个候选目标信息组，分别为候选目标信息组1和候选目标信息组2，第一指示信息可以指示候选目标信息组1和/或候选目标信息组2作为目标终端设备的第一目标信息组，不予限制。
本申请提供的方案，由于候选目标信息组中的信息是通过第一配置信息配置的，因此，第一指示信息可以从配置的信息中选择一种进行激活，且该信息组中包括多个终端设备的信息，相比于现有技术中网络设备需要通过多个DCI频繁地向目标终端设备指示每一个终端设备的信息块的方案，可以进一步节省DCI的开销。
示例性的，若所述候选目标信息组包括所述第一TBS信息、所述第一MCS信息和所述第一时域资源信息，所述方法还包括：接收第二DCI，所述第二DCI指示至少两个候选频域资源集合中的至少一个目标频域资源集合，所述第一频域资源信息对应的频域资源为所述至少一个目标频域资源集合中预设或预配置的部分频域资源。
本申请实施例中的候选频域资源集合可以包括多个子带，其中，至少一个终端设备占用的子带情况、这多个子带中的每一个子带所占用的频域资源以及至少一个终端设备在每一个子带上的配置方式均可以预先配置。
其中，关于候选频域资源信息集合包括的子带可以参考上文图5中的(a)和(b)，具体详细内容不再赘述。
本申请实施例提供的方案，通过预设或配置的方式，向终端设备指示出目标资源集合的部分资源可以用来进行数据数据接收或发送，从而可以灵活的设定目标资源集合的大小，相比现有技术中向终端设备指示的目标资源集合的全部资源都用于进行数据传输的方案，更能够节省DCI的开销。例如，若有10个RB，现有技术中可以将这10个RB划分为5组，网络设备需要用5比特的开销通过DCI将这10个RB指示给终端设备；而本申请的方案可以将这10个RB划分为2个组，网络设备可以预设或预配置其中一个组的前2个RB可以用于终端设备传输数据，因此，网络设备可以用2比特的开销通过第一DCI向终端设备进行指示。此外，目标频域资源集合中的频域资源是网络设备预设或预配置的，在不同的时段可以有多种配置方式，可以提高目标终端设备使用频域资源的灵活性。
示例性的，若所述至少一个目标频域资源集合为一个所述目标频域资源集合，且所述目标频域资源集合中预设或预配置的频域资源包括多种频域资源配置方式，所述第一DCI包括第二指示信息，所述第二指示信息指示所述目标终端设备的频域资源的目标配置方式；或者，
若所述至少一个目标频域资源集合为多个所述目标频域资源集合，且所述多个目标频域资源集合中的至少一个目标频域资源集合中预设或预配置的频域资源包括多种频域资源配置方式，所述第一DCI包括第三指示信息，所述第三指示信息指示所述目标终端设备的频域资源的目标配置方式，所述目标配置方式属于所述多种频域资源配置方式。
本申请实施例中，在至少一个目标频域资源集合包括一个或多个目标频域资源集合的情况下，关于候选频域资源信息集合包括的子带可以参考上文图6和图7，具体详细内容 不再赘述。
本申请实施例提供的方案，预设或预配置的频域资源可以包括多种频域资源配置方式，第一DCI中的指示信息可以从多种频域资源配置方式中指示一种作为目标终端设备的频域资源的目标配置方式，可以提高目标终端设备使用频域资源的灵活性。
示例性的，网络设备还可以向终端设备发送第四指示信息，所述第四指示信息指示所述目标终端设备终止使用所述第一目标信息组对应的目标资源。相应的，所述终端设备可以接收第四指示信息。
示例性的，所述终端设备在接收到第四指示信息前，可以按照预设周期使用所述第一目标信息组对应的目标资源。
本申请实施例中，网络设备可以通过DCI向目标终端设备发送第四指示信息，即网络设备可以向目标终端设备发送一个DCI，该DCI中可以包括第四指示信息，指示目标终端设备终止使用第一目标信息组对应的目标资源。
换句话说，目标终端设备在未接收到第四指示信息之前，可以按照预设周期持续使用第一目标信息组对应的目标资源。
本申请实施例提供的方案，由于目标终端设备在接收到第四指示信息前，均可以使用第一目标信息组对应的目标资源，不需网络设备持续向目标终端设备通过DCI发送信息块，因而可以进一步节省DCI的开销，提高通信系统的性能。
图10和图11为本申请的实施例提供的可能的通信装置的结构示意图。这些通信装置可以实现上述方法实施例中终端设备或网络设备的功能，因此也能实现上述方法实施例所具备的有益效果。在本申请实施例中，该通信装置可以是如图1所示的终端设备130或140，也可以是如图1所示的接入网设备120，还可以是应用于终端设备或接入网设备的模块(如芯片)。
图10是本申请实施例提供的一种通信装置1000的示意性结构图，该装置1000可以包括收发模块1010和处理模块1020。
当通信装置1000用于实现图4所述方法实施例中终端设备的功能时，所述收发模块1010用于接收接收接收第一下行控制信息DCI，所述第一DCI指示至少两个候选频域资源集合中的至少一个目标频域资源集合，所述至少一个目标频域资源集合中预定或预配置的部分频率资源包括第一频域资源信息对应的频域资源；所述处理模块1020用于在所述频域资源上进行数据接收或发送。
当通信装置1000用于实现图4所述方法实施例中网络设备的功能时，所述收发模块1010用于发送第一下行控制信息DCI，所述第一DCI指示至少两个候选频域资源集合中的至少一个目标频域资源集合，所述至少一个目标频域资源集合中预定或预配置的部分频率资源包括第一频域资源信息对应的频域资源；所述处理模块1020用于在所述频域资源上进行数据接收或发送。
当通信装置1000用于实现图9所述方法实施例中终端设备的功能时，所述处理模块1020用于存储指令，用于指示所述收发模块1010接收第一配置信息，所述第一配置信息包括目标终端设备的第一信息组集合；以及接收第一下行控制信息DCI，所述第一DCI包括多个目标信息块，所述多个目标信息块中的一个信息块与所述目标终端设备对应，所述一个信息块包括第一指示信息，所述第一指示信息用于激活所述目标终端设备的第一目 标信息组，所述第一目标信息组属于所述第一信息组集合
当通信装置1000用于实现图9所述方法实施例中网络设备的功能时，所述处理模块1020，用于存储指令，用于指示收发模块1010发送第一配置信息，所述第一配置信息包括目标终端设备的第一信息组集合；以及发送第一DCI下行控制信息，所述第一DCI包括多个终端设备的多个目标信息块，所述多个目标信息块中的一个信息块与所述目标终端设备对应，所述一个信息块包括第一指示信息，所述第一指示信息用于激活所述目标终端设备的第一目标信息组，所述第一目标信息组属于所述第一信息组集合。
关于上述收发模块1010和处理模块1020更详细的描述，可参考上述方法实施例中的相关描述，在此不再说明。
如图11所示，通信装置1100包括处理器1110和接口电路1120。处理器1110和接口电路1120之间相互耦合。可以理解的是，接口电路1120可以为收发器或输入输出接口。可选的，通信装置1100还可以包括存储器1130，用于存储处理器1110执行的指令或存储处理器1110运行指令所需要的输入数据或存储处理器1110运行指令后产生的数据。
当通信装置1100用于实现上述方法实施例中的方法时，处理器1110用于执行上述处理模块1020的功能，接口电路1120用于执行上述收发模块1010的功能。
当上述通信装置为应用于终端设备的芯片时，该终端设备芯片实现上述方法实施例中终端设备的功能。该终端设备芯片从终端设备中的其它模块(如射频模块或天线)接收信息，该信息是网络设备发送给终端设备的；或者，该终端设备芯片向终端设备中的其它模块(如射频模块或天线)发送信息，该信息是终端设备发送给网络设备的。
当上述通信装置为应用于网络设备的芯片时，该网络设备芯片实现上述方法实施例中网络设备的功能。该网络设备芯片从网络设备中的其它模块(如射频模块或天线)接收信息，该信息是终端设备发送给网络设备的；或者，该网络设备芯片向网络设备中的其它模块(如射频模块或天线)发送信息，该信息是网络设备发送给终端设备的。
可以理解的是，本申请的实施例中的处理器可以是中央处理单元(central processing unit，CPU)，还可以是其它通用处理器、数字信号处理器(digital signal processor，DSP)、专用集成电路(application specific integrated circuit，ASIC)、现场可编程门阵列(field programmable gate array，FPGA)或者其它可编程逻辑器件、晶体管逻辑器件，硬件部件或者其任意组合。通用处理器可以是微处理器，也可以是任何常规的处理器。
本申请的实施例中的方法步骤可以通过硬件的方式来实现，也可以由处理器执行软件指令的方式来实现。软件指令可以由相应的软件模块组成，软件模块可以被存放于随机存取存储器(random access memory，RAM)、闪存、只读存储器(Read-Only Memory，ROM)、可编程只读存储器(programmable ROM，PROM)、可擦除可编程只读存储器(erasable PROM，EPROM)、电可擦除可编程只读存储器(electrically EPROM，EEPROM)、寄存器、硬盘、移动硬盘、CD-ROM或者本领域熟知的任何其它形式的存储介质中。一种示例性的存储介质耦合至处理器，从而使处理器能够从该存储介质读取信息，且可向该存储介质写入信息。当然，存储介质也可以是处理器的组成部分。处理器和存储介质可以位于ASIC中。另外，该ASIC可以位于接入网设备或终端设备中。当然，处理器和存储介质也可以作为分立组件存在于接入网设备或终端设备中。
在上述实施例中，可以全部或部分地通过软件、硬件、固件或者其任意组合来实现。 当使用软件实现时，可以全部或部分地以计算机程序产品的形式实现。所述计算机程序产品包括一个或多个计算机程序或指令。在计算机上加载和执行所述计算机程序或指令时，全部或部分地执行本申请实施例所述的流程或功能。所述计算机可以是通用计算机、专用计算机、计算机网络、或者其它可编程装置。所述计算机程序或指令可以存储在计算机可读存储介质中，或者通过所述计算机可读存储介质进行传输。所述计算机可读存储介质可以是计算机能够存取的任何可用介质或者是集成一个或多个可用介质的服务器等数据存储设备。所述可用介质可以是磁性介质，例如，软盘、硬盘、磁带；也可以是光介质，例如，数字多功能光盘(digital versatile disc，DVD)；还可以是半导体介质，例如，固态硬盘(solid state disk，SSD)。
在本申请的各个实施例中，如果没有特殊说明以及逻辑冲突，不同的实施例之间的术语和/或描述具有一致性、且可以相互引用，不同的实施例中的技术特征根据其内在的逻辑关系可以组合形成新的实施例。
本申请中，“至少一个”是指一个或者多个，“多个”是指两个或两个以上。“和/或”，描述关联对象的关联关系，表示可以存在三种关系，例如，A和/或B，可以表示：单独存在A，同时存在A和B，单独存在B的情况，其中A,B可以是单数或者复数。在本申请的文字描述中，字符“/”，一般表示前后关联对象是一种“或”的关系；在本申请的公式中，字符“/”，表示前后关联对象是一种“相除”的关系。
可以理解的是，在本申请的实施例中涉及的各种数字编号仅为描述方便进行的区分，并不用来限制本申请的实施例的范围。上述各过程的序号的大小并不意味着执行顺序的先后，各过程的执行顺序应以其功能和内在逻辑确定。

Claims (22)

  1. 一种通信方法，其特征在于，包括：
    接收第一下行控制信息DCI，所述第一DCI指示至少两个候选频域资源集合中的至少一个目标频域资源集合，所述至少一个目标频域资源集合中预定或预配置的部分频率资源包括第一频域资源信息对应的频域资源；
    在所述频域资源上进行数据接收或发送。
  2. 根据权利要求1所述的方法，其特征在于，在所述至少一个目标频域资源信息集合为一个所述目标频域信息集合时，且所述目标频域信息集合中预设或预配置的频域资源包括多种频域资源配置方式，所述第一DCI包括第一指示信息，所述第一指示信息指示目标终端设备的频域资源的目标配置方式；和/或，
    在所述至少一个目标频域资源信息集合为多个所述目标频域信息集合时，且所述多个目标频域资源信息集合中的至少一个目标频域资源信息集合中预设或预配置的频域资源包括多种频域资源配置方式，所述第一DCI包括第二指示信息，所述第二指示信息指示所述目标终端设备的频域资源的目标配置方式，所述目标配置方式属于所述多种频域资源配置方式。
  3. 根据权利要求1或2所述的方法，其特征在于，所述方法还包括：
    接收第一传输块大小TBS信息和第一信息；
    根据所述第一TBS信息、第一信息和所述第一频域资源信息确定第二信息；
    其中，所述第一信息和所述第二信息分别为第一调制与编码MCS信息和第一时域资源信息中任一信息，且所述第一信息和所述第二信息不同。
  4. 根据权利要求3所述的方法，其特征在于，所述接收第一TBS信息，包括：
    接收来自网络设备的高层信令，所述高层信令中包括所述第一TBS信息。
  5. 根据权利要求3或4所述的方法，其特征在于，所述第二信息为所述第一时域资源信息时，所述第一时域资源信息与第一长度满足第一关联关系，所述第一长度是由所述第一TBS信息、所述第一MCS信息和所述第一频域资源信息确定的。
  6. 根据权利要求5所述的方法，其特征在于，所述第一长度为所述第一时域资源信息中所包括的符号数。
  7. 根据权利要求3或4所述的方法，其特征在于，所述第二信息为所述第一MCS信息时，所述第一MCS信息中的频谱效率与第一频谱效率满足第二关联关系，所述第一频谱效由所述第一时域资源信息、所述第一频域资源信息和所述第一TBS信息确定的。
  8. 根据权利要求3至7中任一项所述的方法，其特征在于，所述接收第一TBS信息和第一信息，包括：
    接收第二DCI，所述第二DCI包括多个信息块，所述多个信息块中的一个信息块与目标终端设备对应，所述一个信息块包括第三指示信息，所述第三指示信息指示所述目标终端设备的第一资源块，所述第一资源块包括所述第一TBS信息、所述第一MCS信息和所述第一时域资源信息中的至少一种，或者包括所述第一TBS信息、所述第一MCS信息、所述第一时域资源信息或所述第一频域资源信息中的至少一种信息中的部分信息；
    接收第二配置信息，所述第二配置信息包括所述目标终端设备对应的所述一个信息块的索引。
  9. 一种通信方法，其特征在于，包括：
    发送第一下行控制信息DCI，所述第一DCI指示至少两个候选频域资源集合中的至少一个目标频域资源集合，所述至少一个目标频域资源集合中预定或预配置的部分频率资源包括第一频域资源信息对应的频域资源；
    在所述频域资源上进行数据接收或发送。
  10. 根据权利要求9所述的方法，其特征在于，在所述至少一个目标频域资源信息集合为一个所述目标频域信息集合时，且所述目标频域信息集合中预设或预配置的频域资源包括多种频域资源配置方式，所述第一DCI包括第一指示信息，所述第一指示信息指示目标终端设备的频域资源的目标配置方式；和/或，
    在所述至少一个目标频域资源信息集合为多个所述目标频域信息集合时，且所述多个目标频域资源信息集合中的至少一个目标频域资源信息集合中预设或预配置的频域资源包括多种频域资源配置方式，所述第一DCI包括第二指示信息，所述第二指示信息指示所述目标终端设备的频域资源的目标配置方式，所述目标配置方式属于所述多种频域资源配置方式。
  11. 根据权利要求9或10所述的方法，其特征在于，所述方法还包括：
    发送第一传输块大小TBS信息和第一信息，所述第一TBS信息、第一信息用于指示第二信息；
    其中，所述第一信息和所述第二信息分别为第一调制与编码MCS信息和第一时域资源信息中任一信息，且所述第一信息和所述第二信息不同。
  12. 根据权利要求11所述的方法，其特征在于，所述发送第一TBS信息，包括：
    向所述目标终端设备发送高层信令，所述高层信令中包括所述第一TBS信息。
  13. 根据权利要求11或12所述的方法，其特征在于，所述第二信息为所述第一时域资源信息时，所述第一时域资源信息与第一长度满足第一关联关系，所述第一长度与所述第一TBS信息、所述第一MCS信息和所述第一频域资源信息相关。
  14. 根据权利要求13所述的方法，其特征在于，所述第一长度为所述第一时域资源信息中所包括的符号数。
  15. 根据权利要求11或12所述的方法，其特征在于，所述第二信息为所述第一MCS信息时，所述第一MCS信息中的频谱效率与第一频谱效率满足第二关联关系，所述第一频谱效与所述第一时域资源信息、所述第一频域资源信息和所述第一TBS信息相关。
  16. 根据权利要求11至15中任一项所述的方法，其特征在于，所述发送第一TBS信息和第一信息，包括：
    发送第二DCI，所述第二DCI包括多个信息块，所述多个信息块中的一个信息块与所述目标终端设备对应，所述一个信息块包括第三指示信息，所述第三指示信息指示所述目标终端设备的第一资源块，所述第一资源块包括所述第一TBS信息和第一信息中至少一种，或者包括所述第一TBS信息和第一信息中至少一种信息中的部分信息；
    发送第二配置信息，所述第二配置信息包括所述目标终端设备对应的所述一个信息块的索引。
  17. 一种通信方法，其特征在于，包括：
    接收第一配置信息，所述第一配置信息包括目标终端设备的第一信息组集合；
    接收第一下行控制信息DCI，所述第一DCI包括多个目标信息块，所述多个目标信息块中的一个信息块与所述目标终端设备对应，所述一个信息块包括第一指示信息，所述第一指示信息用于激活所述目标终端设备的第一目标信息组，所述第一目标信息组属于所述第一信息组集合。
  18. 一种通信方法，其特征在于，包括：
    发送第一配置信息，所述第一配置信息包括目标终端设备的第一信息组集合；
    发送第一下行控制信息DCI，所述第一DCI包括多个终端设备的多个目标信息块，所述多个目标信息块中的一个信息块与所述目标终端设备对应，所述一个信息块包括第一指示信息，所述第一指示信息用于激活所述目标终端设备的第一目标信息组，所述第一目标信息组属于所述第一信息组集合。
  19. 一种通信装置，其特征在于，包括处理器和通信接口，所述通信接口用于接收来自所述通信装置之外的其它通信装置的信号并传输至所述处理器或将来自所述处理器的信号发送给所述通信装置之外的其它通信装置，所述处理器通过逻辑电路或执行代码指令用于实现如权利要求1至8或9至16或17或18中任一项所述的方法。
  20. 一种计算机可读存储介质，其特征在于，包括指令，当所述计算机程序被运行时，实现如权利要求1至8或9至16或17或18中任一项所述的方法。
  21. 一种通信装置，其特征在于，包括用于执行如权利要求1至8或9至16或17或18中的任一项所述方法的模块。
  22. 一种计算机产品，其特征在于，其特征在于，当其在计算机上运行时，实现如权利要求1至8或9至16或17或18中任一项所述的方法。
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