WO2024027812A1 - 侧链路通信方法及通信装置 - Google Patents

侧链路通信方法及通信装置 Download PDF

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Publication number
WO2024027812A1
WO2024027812A1 PCT/CN2023/111138 CN2023111138W WO2024027812A1 WO 2024027812 A1 WO2024027812 A1 WO 2024027812A1 CN 2023111138 W CN2023111138 W CN 2023111138W WO 2024027812 A1 WO2024027812 A1 WO 2024027812A1
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WIPO (PCT)
Prior art keywords
csi
terminal device
indication information
network device
sent
Prior art date
Application number
PCT/CN2023/111138
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English (en)
French (fr)
Inventor
邓云
刘星
Original Assignee
展讯通信（上海）有限公司
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Publication of WO2024027812A1 publication Critical patent/WO2024027812A1/zh

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/70—Services for machine-to-machine communication [M2M] or machine type communication [MTC]
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H04W72/21—Control channels or signalling for resource management in the uplink direction of a wireless link, i.e. towards the network
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal

Definitions

  • the present application relates to the field of communication technology, and in particular, to a side-link communication method and communication device.
  • Terminal devices User Equipment, UE
  • Terminal devices that support side-link communication have two resource allocation modes, scheduled resource allocation mode (also called mode one) and automatic resource selection mode (also called mode two).
  • scheduled resource allocation mode also called mode one
  • automatic resource selection mode also called mode two.
  • the sending terminal device needs to send a scheduling request (Scheduling Request, SR) to the network device in the connected state to request the allocation of resources for side link transmission.
  • SR scheduling request
  • the sending terminal device selects resources for side-link transmission from a resource pool.
  • a terminal device performing side-link communication can send side-link channel state information (SL CSI) to another terminal device.
  • SL CSI side-link channel state information
  • the terminal device needs to trigger an SR to request the network device to allocate side-link transmission resources for transmitting SL CSI.
  • currently network equipment will configure an SR configuration information for the SL CSI to be transmitted by the terminal device.
  • the configured SR is used to transmit 1-bit information to indicate whether side-link transmission resources need to be allocated for transmitting SL CSI. This method is only applicable to terminal equipment that supports side-link communication on one carrier. If the terminal If the device supports side-link communication on multiple carriers, it may transmit SL CSI on any one or multiple carriers. At this time, how to request side-link transmission resources for transmitting SL CSI is an urgent problem to be solved.
  • Embodiments of the present application provide a side-link communication method and communication device, which can indicate to network equipment on which carriers SL CSI to be transmitted, thereby facilitating the network equipment to allocate side-link transmission resources corresponding to the carrier, and supporting terminal equipment to operate on multiple carriers. Scenario for side-link communication on multiple carriers.
  • embodiments of the present application provide a side-link communication method, which method includes:
  • the SL CSI is sent on the sidelink transmission resources.
  • the terminal device can indicate to the network device through the indication information that the terminal device has a carrier of SL CSI to be sent, and the terminal device receives the first resource allocation information sent by the network device, and the first resource allocation information is used for Indicates the side link transmission resources allocated by the network device on this carrier, and the terminal device sends SL CSI on the allocated side link transmission resources.
  • the scenario in which the terminal device performs side-link communication on multiple carriers can be supported.
  • the terminal device has SL CSI to be sent on one or some carriers, it can indicate the corresponding carrier to the network device, and also It is convenient for network equipment to allocate side link transmission resources corresponding to the carrier.
  • the indication information is carried in a first scheduling request SR, and the first SR is used to request the network device to allocate side link transmission resources for transmitting SL CSI.
  • the indication information can be carried in the SR, thereby being compatible with existing systems and reducing signaling overhead.
  • the indication information includes N bits in the first SR, where N is an integer greater than or equal to 2.
  • the at least two bits in the first SR can indicate multiple carriers through different combinations of bit values, thereby supporting the terminal device to perform side links on multiple carriers. Communication scenario.
  • the value of N is determined based on the number of carriers used by the terminal device for side-link communication, and the carriers used by the terminal device for side-link communication include the to-be-sent carriers.
  • SL CSI carrier
  • any one or more of multiple carriers for side link communication can be instructed by the terminal device through N bits.
  • the larger the value represented by the N bits, the larger the carrier indicated by the N bits, or the corresponding relationship is configured by the network device.
  • the network device can be facilitated to determine the carrier indicated by the N bits.
  • the first SR and hybrid automatic repeat request HARQ feedback information are multiplexed and transmitted on a first uplink transmission resource, and the first uplink transmission resource is allocated for the HARQ feedback information. transmission resources.
  • the first SR carrying the indication information and the HARQ feedback information are multiplexed, thereby saving transmission resources.
  • the first SR and the CSI of the downlink channel are multiplexed and transmitted on a second uplink transmission resource
  • the second uplink transmission resource is a transmission resource allocated for the CSI of the downlink channel.
  • the first SR carrying the indication information is multiplexed with the CSI of the downlink channel, thereby saving transmission resources.
  • the indication information is carried in a data cache status report BSR.
  • the instruction information is carried in the BSR to avoid changes to the existing SR and is compatible with the existing system.
  • the indication information includes M bits in the BSR, where M is an integer greater than or equal to 1.
  • M bits in the BSR are used to indicate to the terminal device that there is a carrier on which the SL CSI to be transmitted is located, which can avoid changes to the existing SR and is compatible with the existing system.
  • each of the M bits is used to indicate whether there is SL CSI to be sent on different carriers.
  • one bit indicates whether there is SL CSI to be sent on a carrier, and the indication method is simple and intuitive.
  • the method further includes:
  • the sending of instruction information to the network device includes:
  • the existing SR configuration does not need to be changed, and the indication information is carried through the BSR, thereby being compatible with the existing system.
  • embodiments of the present application provide a side-link communication method, which method includes:
  • Receive indication information sent by the terminal device the indication information being used to indicate one or more carriers to which side link channel state information SLCSI needs to be sent;
  • first resource allocation information is sent to the terminal device, where the first resource allocation information is used to indicate side link transmission resources allocated on the carrier.
  • the terminal device can indicate to the network device through the indication information that the terminal device has SL CSI to be sent on a certain carrier, and the network device allocates side link transmission resources on the carrier.
  • the scenario in which the terminal device performs side-link communication on multiple carriers can be supported.
  • the terminal device When the terminal device has SL CSI to be sent on one or some carriers, it can indicate the corresponding carrier to the network device, and also It is convenient for network equipment to allocate side link transmission resources corresponding to the carrier.
  • the indication information is carried in a first scheduling request SR, and the first SR is used to request the network device to allocate side link transmission resources for transmitting SL CSI.
  • the indication information includes N bits in the first SR, where N is an integer greater than or equal to 2.
  • the value of N is determined based on the number of carriers used by the terminal device for side-link communication, and the carriers used by the terminal device for side-link communication include the to-be-sent carriers.
  • SL CSI carrier
  • the larger the value represented by the N bits, the larger the carrier indicated by the N bits, or the corresponding relationship is configured by the network device.
  • the first SR and hybrid automatic repeat request HARQ feedback information are multiplexed and transmitted on a first uplink transmission resource, and the first uplink transmission resource is allocated for the HARQ feedback information. transmission resources.
  • the first SR and the CSI of the downlink channel are multiplexed and transmitted on a second uplink transmission resource, and the second uplink transmission resource is a transmission resource allocated for the CSI of the downlink channel. .
  • the indication information is carried in a data cache status report BSR.
  • the indication information includes M bits in the BSR, where M is an integer greater than or equal to 1.
  • each of the M bits is used to indicate whether there is SL CSI to be sent on different carriers.
  • the method further includes:
  • the instruction information sent by the receiving terminal device includes:
  • the BSR sent by the terminal device and carrying the indication information is received on the third uplink transmission resource.
  • embodiments of the present application provide a communication device, which includes a unit for implementing the method in any possible implementation manner of the first aspect and the second aspect.
  • inventions of the present application provide a communication device.
  • the communication device includes a processor and a memory.
  • the processor and the memory are connected to each other.
  • the memory is used to store a computer program.
  • the computer program includes program instructions.
  • the processor is configured to The program instructions are called to perform the method described in the first aspect or any optional implementation manner of the first aspect, or to perform the method described in the second aspect or any optional implementation manner of the second aspect.
  • embodiments of the present application provide a chip, which includes a processor and an interface, and the processor and the interface are coupled;
  • the interface is used to receive or output signals, and the processor is used to execute code instructions to perform the method as described in the first aspect or any optional implementation of the first aspect, or to perform the method as described in the second aspect or any of the second aspects. Methods described in alternative embodiments.
  • embodiments of the present application provide a module device, characterized in that the module device includes a communication module, a power module, a storage module and a chip module, wherein: the power module is used for The module device provides electrical energy; the storage module is used to store data and/or instructions; the communication module communicates with external devices; the chip module is used to call the data and/or instructions stored in the storage module, combined with the communication module , perform the method described in the first aspect or any optional implementation manner of the first aspect, or perform the method described in the second aspect or any optional implementation manner of the second aspect.
  • embodiments of the present application provide a computer-readable storage medium.
  • the computer-readable storage medium stores a computer program.
  • the computer program includes program instructions.
  • Figure 1 is a schematic structural diagram of a communication system provided by an embodiment of the present application.
  • Figure 2 is a schematic flowchart of a side-link communication method provided by an embodiment of the present application.
  • Figure 3a is a schematic diagram of an SL CSI report format provided by an embodiment of the present application.
  • Figure 3b is a schematic diagram of a BSR format provided by an embodiment of the present application.
  • Figure 4 is a schematic structural diagram of a communication device provided by an embodiment of the present application.
  • Figure 5 is a schematic structural diagram of another communication device provided by an embodiment of the present application.
  • Figure 6 is a schematic structural diagram of yet another communication device provided by an embodiment of the present application.
  • Figure 7 is a schematic structural diagram of a module device provided by an embodiment of the present application.
  • the character "/" indicates that the related objects are an or relationship.
  • A/B can mean A or B.
  • “And/or” describes the relationship between related objects, indicating that three relationships can exist.
  • a and/or B can mean: A exists alone, A and B exist simultaneously, and B exists alone.
  • At least one refers to one or more, and “multiple” refers to two or more.
  • at least one of the following” or similar expressions thereof refers to any combination of these items, which may include any combination of a single item (items) or a plurality of items (items).
  • at least one item (item) of A, B or C can represent: A, B, C, A and B, A and C, B and C, or A, B and C.
  • each of A, B, and C can itself be an element, or it can be a set containing one or more elements.
  • transmission can include sending and/or receiving, and can be a noun or a verb.
  • the equals involved in the embodiments of this application can be used in conjunction with greater than, and are applicable to the technical solution adopted when it is greater than, and can also be used in conjunction with less than, and are applicable to the technical solution adopted when it is less than. It should be noted that when equal is used with greater than, it cannot be used with less than; when equal to is used with less than, it is not used with greater than.
  • the terminal device is a device with wireless transceiver function, which can be called a terminal (terminal), user equipment (UE), mobile station (MS), or mobile terminal (mobile terminal).
  • MT mobile terminal
  • access terminal equipment vehicle-mounted terminal equipment, industrial control terminal equipment, UE unit, UE station, mobile station, remote station, remote terminal equipment, mobile equipment, UE terminal equipment, wireless communication equipment, UE agent or UE device, etc.
  • Terminal equipment can be fixed or mobile.
  • the terminal device may support at least one wireless communication technology, such as long term evolution (long term evolution, LTE), new radio (new radio, NR), etc.
  • the terminal device may be a mobile phone (mobile phone), tablet computer (pad), desktop computer, notebook computer, all-in-one computer, vehicle-mounted terminal, virtual reality (VR) terminal device, augmented reality (AR) terminal Equipment, wireless terminals in industrial control, wireless terminals in self-driving, wireless terminals in remote medical surgery, wireless terminals in smart grid, transportation security Wireless terminals in transportation safety, wireless terminals in smart cities, wireless terminals in smart homes, cellular phones, cordless phones, session initiation protocol (SIP) phones, wireless Wireless local loop (WLL) station, personal digital assistant (PDA), handheld device with wireless communication capabilities, computing device or other processing device connected to a wireless modem, Wearable devices, terminal devices in future mobile communication networks or terminal devices in future evolved public land mobile networks (PLMN), etc.
  • the terminal device may also be a device with transceiver functions, such as a chip system.
  • the chip system may include chips and may also include other discrete devices.
  • the network device is a device that provides wireless communication functions for terminal devices, and may also be called access network equipment, radio access network (radio access network, RAN) equipment, etc.
  • the network device can support at least one wireless communication technology, such as LTE, NR, etc.
  • network equipment examples include but are not limited to: next generation base station (generation nodeB, gNB), evolved node B (evolved node B, eNB), wireless network control in the fifth generation mobile communication system (5th-generation, 5G) Radio network controller (RNC), node B (NB), base station controller (BSC), base transceiver station (BTS), home base station (e.g., home evolved node B, Or home node B, HNB), baseband unit (baseband unit, BBU), transceiving point (transmitting and receiving point, TRP), transmitting point (transmitting point, TP), mobile switching center, etc.
  • RNC Radio network controller
  • NB node B
  • BSC base station controller
  • BTS base transceiver station
  • home base station e.g., home evolved node B, Or home node B, HNB
  • baseband unit baseband unit
  • TRP transmitting point
  • TP mobile switching center
  • the network device can also be a wireless controller, a centralized unit (CU), and/or a distributed unit (DU) in a cloud radio access network (CRAN) scenario, or the network device can They are relay stations, access points, vehicle-mounted equipment, terminal equipment, wearable devices, and network equipment in future mobile communications or network equipment in future evolved PLMNs.
  • the network device may also be a device with a wireless communication function for the terminal device, such as a chip system.
  • the chip system may include a chip, and may also include other discrete devices.
  • the terminal device may be within the network coverage or outside the network coverage.
  • the terminal device can be in any state: connected state, idle state, or inactive state.
  • Terminal devices that support side-link communication have two resource allocation modes: scheduled resource allocation mode (also called mode one) and automatic resource selection mode (also called mode two).
  • scheduled resource allocation mode also called mode one
  • automatic resource selection mode also called mode two
  • the transmitting terminal Tx UE
  • the network device schedules side link transmission resources to transmit side link control information and data.
  • the sending terminal can be in the connected state, or in the idle state, or in the Inactive state; it can be within the network coverage range, or it can be outside the network coverage range.
  • the sending terminal selects side link transmission resources from the resource pool.
  • FIG. 1 is a schematic structural diagram of a communication system provided by an embodiment of the present application.
  • the communication system may include but is not limited to one or more network devices and one or more terminal devices.
  • one network device 101 and two terminal devices are taken as an example.
  • the two terminal devices are terminal device 102 and terminal device respectively. 103.
  • the terminal device 102 and the terminal device 103 can perform side link communication.
  • the network device 101 in Figure 1 takes a base station as an example, and the terminal device 102 and terminal device 103 take a mobile phone as an example.
  • the terminal device 102 or the terminal device 103 can establish a wireless link with the network device 101 for communication.
  • the wireless link established therebetween may be an uplink and/or a downlink.
  • the communication system shown in Figure 1 includes but is not limited to network equipment and terminal equipment, and may also include other communication equipment.
  • the number and form of equipment shown in Figure 1 are only examples and do not constitute a limitation on the embodiments of the present application.
  • the terminal device performing side-link communication can trigger the opposite terminal device to send SL CSI, so that the opposite terminal device can obtain the SL CSI and adopt corresponding transmission parameters based on the information.
  • the terminal device that needs to send SL CSI is in mode 1 and there are no side-link transmission resources, the terminal device needs to send an SR to the network device to request the network device to allocate side-link transmission resources for transmitting SL CSI.
  • terminal equipment In the current protocol, terminal equipment only supports side-link communication on one carrier. The network equipment will configure an SR configuration for possible SL CSI transmission. This SR configuration can configure the time-frequency resources and cycles corresponding to the SL CSI SR.
  • SL CSISR is the SR used to request side link transmission resources for transmitting SL CSI.
  • SL CSI SR is used to transmit 1 bit of information. This bit can indicate whether to request side link transmission resources for transmitting SL CSI.
  • a terminal device can perform side-link communication with the same or different terminal devices on multiple carriers at the same time. At this time, the terminal device may be on any of the multiple carriers.
  • the terminal device of this application requests side link transmission resources for transmitting SL CSI from the network device, it sends indication information.
  • the indication information is used to indicate to the terminal device on which carrier or carriers there is SL CSI to be sent. , so that the network device allocates side link transmission resources on the corresponding carrier.
  • This method does not require multiple SR configurations for SL CSI transmission resource scheduling requests, and also supports side-link communication scenarios for terminal devices on multiple carriers. It is convenient for network equipment to allocate side link transmission resources on the corresponding carrier for transmitting SL CSI.
  • FIG. 2 it is a schematic flow chart of an embodiment of the side link communication method provided by this application. As shown in Figure 2, the method may include but is not limited to the following steps:
  • the terminal device sends indication information to the network device.
  • the indication information is used to indicate one or more carriers that need to send side link channel state information SL CSI. It can also be called that the indication information is used to indicate the presence of the terminal device.
  • the carrier of the side link channel status information SL CSI to be sent, correspondingly, the network device receives the indication information.
  • the terminal device may refer to a terminal device that performs carrier aggregation on a side link.
  • the terminal device may perform side-link communication on multiple carriers, or it may also be said that the terminal device performs carrier aggregation on the side link.
  • the terminal device performs side-link communication on Q carriers, and Q can be an integer greater than or equal to 2.
  • the terminal device can request side-link transmission resources for transmitting SL CSI from the network device.
  • this application will include the SL CSI to be sent.
  • the carrier of SL CSI is called the first carrier.
  • the first carrier may include one or more carriers.
  • the terminal device may have SL CSI to be sent on one or more carriers.
  • the Q carriers include the first carrier.
  • the terminal device may have SL CSI to be sent on one or more of the Q carriers.
  • Q may be equal to 8
  • the terminal device may perform side-link communication with the same or different terminal devices on 8 carriers, but the terminal device may be on any one or more of the 8 carriers.
  • SL CSI to be sent.
  • this application refers to one or more carriers in which SL CSI to be sent is collectively referred to as the first carrier.
  • the above SL CSI is used to describe information related to the channel quality of the side link channel.
  • SL CSI describes the side-link propagation effect of wireless signals between the transmitter and receiver, including the effects of distance, scattering, fading, etc. on the signal.
  • Figure 3a it is a schematic structural diagram of SL CSI.
  • the SL CSI includes one byte. Among them, Channel Quality Indication (CQI) occupies 4 bits.
  • CQI Channel Quality Indication
  • the terminal device may use mode 1 (scheduling resource allocation mode) to obtain side-link transmission resources for transmitting SL CSI, that is, the network device allocates side-link transmission resources for transmitting SL CSI to the terminal device.
  • mode 1 scheduling resource allocation mode
  • the terminal device sends indication information to the network device, and the indication information is used Used to indicate to the terminal device that there is a carrier for SL CSI to be sent.
  • the indication information may include N bits, where N is an integer greater than or equal to 2, to indicate different carriers and/or carrier combinations through the N bits.
  • the value of N may be determined based on the number of carriers used by the terminal device for side-link communication.
  • the value of N may be log 2 Q upward Rounding.
  • Q is 8
  • 3 bits can be used to indicate the first carrier.
  • This method can be understood as using the value represented by N bits to indicate the first carrier.
  • the value represented by N bits can be understood as the binary value represented by the N bits as a whole. For example, N is 3. If the N bits are 000, the value represented is 0; if the N bits are 000, the value represented is 0; If the N bits are 001, the represented value is 1; if the N bits are 010, the represented value is 2. In this implementation, there is a corresponding relationship between the value represented by the N bits and the indicated carrier.
  • the value corresponding to the first carrier is determined.
  • the value The corresponding bit information is the indication information.
  • the corresponding relationship may be a default rule. For example, the larger the value represented by the N bits, the larger the carrier indicated by it. For example, if the terminal device performs side-link communication on 8 carriers, and the 8 carriers are F1, F2...F8 from small to large, then the 8 carriers can pass bits 000, 001, 010, 011 in order. 100, 101, 110, 111 to indicate.
  • the terminal device has SL CSI to be sent on a certain carrier, it can send indication information containing corresponding bit information.
  • the terminal device when the terminal device has SL CSI to be sent on carrier F2, the terminal device can send indication information carrying 001, that is, the indication information is 001.
  • the corresponding relationship between the value represented by the N bits and the indicated carrier may also be configured by the network device.
  • the network device may also configure only the corresponding relationship between some of the multiple carriers used by the terminal device for side-link communication and the value represented by N bits, such as the terminal device in F1, F2... F8 performs side-link communication (or can also be called side-link carrier aggregation), but the terminal device only uses mode 1 resource scheduling on F1, F2, F3, and F4, and uses mode 2 resource scheduling on other carriers. method.
  • the network device can configure the corresponding relationship between these four carriers and the value represented by the 2 bits. Other carriers Because the terminal device independently selects resources, even if there is SL CSI to be transmitted, the terminal device independently selects the transmission resource and does not need to notify the network device to allocate transmission resources.
  • the value of N can also be the same as the value of Q, that is, one of the N bits corresponds to a carrier, and the value of this bit can be used to indicate whether there is a signal to be sent on the corresponding carrier.
  • SL CSI For example, if the bit value is 0, it indicates that there is no SL CSI to be sent on the corresponding carrier; if the bit value is 1, it indicates that there is SL CSI to be sent on the corresponding carrier.
  • the terminal device may have SL CSI to be sent on one carrier, that is, the first carrier includes one carrier, or there may be SL CSI to be sent on multiple carriers, that is, the first carrier includes multiple carriers.
  • the indication information may indicate one carrier or a combination of multiple carriers
  • the value of N in the embodiment of the present application may be determined based on the possibility of various combinations of Q carriers. For example, if the value of Q is 8, the N bits can indicate a single carrier or a combination of two carriers, then the value of N can be log 2 W rounded up, where, That is, 6 bits are needed to indicate. Different values represented by these 6 bits indicate different carriers or carrier combinations.
  • 001000-100011 respectively indicates a combination of two carriers among the 8 carriers.
  • the presence of SL CSI to be transmitted on different numbers of carriers can also be indicated by different numbers of bits contained in the indication information. For example, if the indication information contains 3 bits, the indication information indicates Q carriers. There is SL CSI to be transmitted on one of the carriers. If the indication information contains 5 bits, the indication information indicates that SL CSI to be transmitted exists on two of the Q carriers at the same time, and so on. It can be understood that if the indication information is carried in the SR, the indication information including the number of bits may be SR configured through different SR configurations, that is, multiple SR configurations are required.
  • the above indication information may be multiplexed with Hybrid Automatic Repeat Request (HARQ) feedback information.
  • HARQ Hybrid Automatic Repeat Request
  • the indication information may be multiplexed with the HARQ feedback information and transmitted on the first uplink transmission resource, where the first uplink transmission resource may be a transmission resource allocated for the HARQ feedback information.
  • the terminal device when the terminal device needs to send indication information in time slot n, the terminal device also needs to send HARQ feedback information in this time slot.
  • the HARQ feedback information may be HARQ feedback ACK/NACK for downlink data.
  • the terminal equipment can determine a physical uplink control channel (Physical Uplink Control Channel, PUCCH) resource as the first uplink transmission resource so that indication information and HARQ feedback information can be transmitted simultaneously.
  • PUCCH Physical Uplink Control Channel
  • the HARQ feedback information that the terminal device needs to feed back includes 1 bit of HARQ ACK/NACK, and the indication information sent by the terminal device includes 3 bits. Then the terminal device needs to transmit a total of 4 bits.
  • the first bit is HARQ feedback. bits, the last 3 bits represent indication information. It is understandable that the first 3 bits may represent indication information, and the last 1 bit may represent HARQ feedback, which is not limited in this application.
  • the terminal device determines a resource that can carry 4 bits from the PUCCH resources configured by the network that can transmit different bit lengths as the first uplink transmission resource. In this time slot, the 4-bit information is carried on the PUCCH resource and sent to the network. Correspondingly, the network device parses and obtains 4 bits.
  • the network device can determine from the previous scheduling information of the terminal device that the terminal device only needs to feed back 1 bit of HARQ ACK/NACK in time slot n, and the terminal device has transmitted 4 bits of information. Then the network device determines that the terminal device has sent a 3-bit information indicating the indication information, and then can use the 3-bit information to learn on which carrier the terminal device has SL CSI to be transmitted, and can promptly allocate side link transmission to the terminal device on the carrier. resource.
  • the terminal device may have multiple data radio bearers (DRBs) on the Uu interface (that is, the interface between the terminal device and the network device), and the network device may configure different SRs for the multiple DRBs.
  • DRBs data radio bearers
  • the terminal device When the terminal device has data that needs to be transmitted in a certain DRB, the terminal device will send the corresponding SR.
  • this application calls it the third SR.
  • the third SR is used to request the network device to allocate uplink transmission resources to transmit the DRB. The data.
  • Third SR is also available to multiplex with the HARQ feedback information, in order to facilitate the network device to distinguish whether the third SR triggered by the DRB has data to be transmitted or the indication information triggered by the SL CSI to be transmitted, the indication information and the third SR in the embodiment of the present application are The number of bits carried in the SR is different.
  • the indication information includes 3 bits
  • the third SR may include 2 bits, or 4 bits.
  • the above indication information may be multiplexed with the CSI of the downlink channel (which may also be called the CSI of the Uu interface).
  • CSI can be used to describe information related to channel quality.
  • CSI describes the propagation effect of wireless signals between the transmitter and receiver, including the effects of distance, scattering, fading, etc. on the signal.
  • the CSI of the downlink channel can be used by the terminal device to feedback the downlink channel quality to the network device, so that the network device can perform resource scheduling, beam management, mobility management, rate matching and other processes based on the CSI of the downlink channel to improve communication quality.
  • the CSI of the downlink channel sent by the terminal device to the network device may be carried in CSI reports (reports).
  • the CSI of the downlink channel may include at least one of the following: CSI reference signal resource indicator (CSI-RS resource indicator, CRI), rank indicator index (rank indicator, RI), channel quality indicator index (channel quality indicator, CQI) ), precoding matrix indicator index (precoding matrix indicator, PMI), layer indicator index (layer indicator, LI), layer 1 reference signal received power (layer 1 reference signal received power, L1-RSRP) or layer 1 signal and interference plus Noise ratio (layer 1 signal-to-noise and interference ratio, L1-SINR).
  • CSI-RS resource indicator CRI
  • rank indicator index rank indicator, RI
  • channel quality indicator index channel quality indicator index
  • CQI channel quality indicator index
  • precoding matrix indicator index precoding matrix indicator
  • PMI layer indicator index
  • layer indicator LI
  • layer 1 reference signal received power layer 1 reference signal received power, L1-RSRP
  • layer 1 signal and interference plus Noise ratio layer 1 signal-to-noise and interference ratio
  • the indication information may be multiplexed with the CSI of the downlink channel and transmitted on the second uplink transmission resource, where the second uplink transmission resource may be a transmission resource allocated for the CSI of the downlink channel.
  • the terminal equipment may determine a PUCCH resource as the second uplink transmission resource so that the indication information and the CSI of the downlink channel can be transmitted simultaneously.
  • the above-mentioned third SR used to request the network device to allocate uplink transmission resources to transmit DRB data can also be multiplexed with the CSI of the downlink channel.
  • the third SR there is still SL CSI triggered indication information to be transmitted.
  • the indication information and the number of bits carried in the third SR are different.
  • the indication information includes 3 bits
  • the third SR may include 2 bits, or 4 bits.
  • the above indication information for indicating that the terminal device has a carrier for SL CSI to be sent may be carried in the first SR.
  • the first SR may be used to request the network device to allocate a side link for transmitting SL CSI. Transport resources.
  • the above-mentioned first SR may be a new SR configuration.
  • the new SR configuration is compared to the network when the existing terminal equipment supports side-link communication on one carrier.
  • the network device The configured SR configuration containing 1 bit of information is called the second SR configuration.
  • the terminal device performs side-link communication on multiple carriers, the terminal device sends a message according to the first SR configuration. Send the above-mentioned first SR, and ignore the second SR configuration sent by the network device.
  • the terminal device switches to (or falls back to) side-link communication on a carrier, the terminal device can send the second SR according to the second SR configuration without the need for the network device to reconfigure the SR.
  • the second SR Contains 1 bit of information.
  • the above indication information for indicating that the terminal device has SL CSI to be sent on the first carrier can be carried in a buffer status report (Buffer Status Report, BSR).
  • BSR Buffer Status Report
  • FIG 3b it is a schematic structural diagram of BSR.
  • the terminal equipment performs side-link communication on 8 carriers.
  • the 8 carriers are F1, F2, F3...F8, and one bit is used for Indicates a carrier. For example, if the first bit is 1, it indicates that there is SL CSI to be sent on carrier F1. It can be understood that if the terminal device performs side-link communication on 16 carriers, the BSR may include 16 bits.
  • the terminal device before the terminal device sends the BSR carrying the above indication information, the terminal device sends a second SR to the network device, where the second SR is used to request the network device to allocate uplink transmission resources.
  • the second SR can use the SR configuration when the terminal device only supports side-link communication on one carrier, that is, the second SR contains 1 bit of information.
  • the network device allocates a third uplink transmission resource to the terminal device and indicates it to the terminal device through the second resource allocation information.
  • the terminal device sends the BSR carrying the above indication information on the indicated third uplink transmission resource.
  • the network device sends first resource allocation information.
  • the first resource allocation information is used to indicate side link transmission resources allocated on the first carrier.
  • the terminal device receives the first resource allocation information. Resource allocation information.
  • the network device can determine on which carrier or carriers the terminal device has SL CSI to be sent through the indication information.
  • the network device allocates side link transmission resources on the corresponding carrier to the terminal device, and indicates this to the terminal device through the first resource allocation information.
  • the terminal device sends SL CSI on the side link transmission resource.
  • the terminal device receives the first resource allocation information sent by the network device, and determines the side link transmission resources allocated by the network device through the first resource allocation information.
  • the terminal device sends SL CSI on the side link transmission resources. If the allocated side link transmission resources are still sufficient, the terminal device can transmit other side link data/signaling.
  • network equipment cannot allocate side link transmission resources in time and waits until the terminal equipment obtains side link transmission resources. , SL CSI is obsolete. At this time, the terminal device can use this side link transmission resource to transmit other side link data/signaling.
  • the terminal device can indicate to the network device through indication information that the terminal device has a carrier of SL CSI to be sent, and the terminal device receives the first resource allocation information sent by the network device, and the first resource allocation information is used to indicate The network device allocates side-link transmission resources on the carrier, and the terminal device sends SL CSI on the allocated side-link transmission resources.
  • the scenario in which the terminal device performs side-link communication on multiple carriers can be supported.
  • the terminal device has SL CSI to be sent on one or some carriers, it can indicate the corresponding carrier to the network device, and also It is convenient for network equipment to allocate side link transmission resources corresponding to the carrier.
  • Figure 4 is a schematic structural diagram of a communication device provided by an embodiment of the present application.
  • the device may be a terminal device or a device in the terminal device.
  • it may be a chip or chip module in the terminal device, or a device that can be used in conjunction with the terminal device.
  • the communication device 400 shown in FIG. 4 may include a sending unit 401 and a receiving unit 402. in:
  • the sending unit 401 is configured to send indication information to the network device, where the indication information is used to indicate the carrier on which the side link channel state information SL CSI needs to be sent;
  • the receiving unit 402 is configured to receive the first resource allocation information sent by the network device, where the first resource allocation information is used to indicate side link transmission resources allocated on the carrier;
  • the sending unit 401 is also configured to send the SL CSI on the side link transmission resource.
  • the indication information is carried in a first scheduling request SR, and the first SR is used to request the network device to allocate side link transmission resources for transmitting SL CSI.
  • the indication information includes N bits in the first SR, where N is an integer greater than or equal to 2.
  • the value of N is determined based on the number of carriers used by the terminal device for side-link communication, and the carriers used by the terminal device for side-link communication include the to-be-sent carriers.
  • SL CSI carrier
  • the larger the value represented by the N bits, the larger the carrier indicated by the N bits, or the corresponding relationship is configured by the network device.
  • the first SR and hybrid automatic repeat request HARQ feedback information are multiplexed and transmitted on a first uplink transmission resource, and the first uplink transmission resource is allocated for the HARQ feedback information. transmission resources.
  • the first SR and the CSI of the downlink channel are multiplexed on the second uplink transmission resource.
  • the second uplink transmission resource is a transmission resource allocated for CSI of the downlink channel.
  • the indication information is carried in a data cache status report BSR.
  • the indication information includes M bits in the BSR, where M is an integer greater than or equal to 1.
  • each of the M bits is used to indicate whether there is SL CSI to be sent on different carriers.
  • the sending unit 401 is further configured to send a second SR to the network device, where the second SR is used to request the network device to allocate uplink transmission resources;
  • the receiving unit 402 is also configured to receive second resource allocation information sent by the network device, where the second resource allocation information is used to indicate the third uplink transmission resource;
  • the sending unit 401 is specifically configured to send a BSR carrying the indication information to the network device on the third uplink transmission resource.
  • FIG. 5 is a schematic structural diagram of another communication device provided by an embodiment of the present application.
  • the device may be a network device or a device in the network device.
  • it may be a chip or chip module in the network device, or a device that can be used in conjunction with the network device.
  • the communication device 500 shown in FIG. 5 may include a receiving unit 501 and a sending unit 502. in:
  • the receiving unit 501 is configured to receive indication information sent by the terminal device, where the indication information is used to indicate the carrier on which the side link channel state information SL CSI needs to be sent;
  • the sending unit 502 is configured to send first resource allocation information to the terminal device in response to the indication information, where the first resource allocation information is used to indicate side link transmission resources allocated on the carrier.
  • the indication information is carried in a first scheduling request SR, and the first SR is used to request the network device to allocate side link transmission resources for transmitting SL CSI.
  • the indication information includes N bits in the first SR, where N is an integer greater than or equal to 2.
  • the value of N is determined based on the number of carriers used by the terminal device for side-link communication, and the carriers used by the terminal device for side-link communication include the to-be-sent carriers.
  • SL CSI carrier
  • the larger the value represented by the N bits, the larger the carrier indicated by the N bits, or the corresponding relationship is configured by the network device.
  • the first SR and hybrid automatic repeat request HARQ feedback information are multiplexed and transmitted on a first uplink transmission resource, and the first uplink transmission resource is allocated for the HARQ feedback information. transmission resources.
  • the first SR and the CSI of the downlink channel are multiplexed and transmitted on a second uplink transmission resource
  • the second uplink transmission resource is a transmission resource allocated for the CSI of the downlink channel.
  • the indication information is carried in a data cache status report BSR.
  • the indication information includes M bits in the BSR, where M is an integer greater than or equal to 1.
  • each of the M bits is used to indicate whether there is SL CSI to be sent on different carriers.
  • the receiving unit 501 is also configured to receive a second SR sent by the terminal device, where the second SR is used to request the network device to allocate uplink transmission resources;
  • the sending unit 502 is further configured to send second resource allocation information to the terminal device in response to the second SR, where the second resource allocation information is used to indicate a third uplink transmission resource;
  • the receiving unit is specifically configured to receive the BSR carrying the indication information sent by the terminal device on the third uplink transmission resource.
  • Figure 6 is a schematic structural diagram of another communication device provided by an embodiment of the present application, which is used to implement the functions of the terminal device in Figure 2 above.
  • the communication device 600 may be a terminal device or a device for a terminal device.
  • the device for the terminal device may be a chip system or a chip within the terminal device. Among them, the chip system can be composed of chips, or can also include chips and other discrete devices.
  • the communication device 600 is used to implement the functions of the network device in Figure 2 mentioned above.
  • the communication device may be a network device or a device for a network device.
  • the means for the network device may be a system-on-a-chip or chip within the network device.
  • the communication device 600 includes at least one processor 620, which is used to implement the data processing function of the terminal device or network device in the method provided by the embodiment of the present application.
  • the communication device 600 may also include a communication interface 610, which is used to implement the sending and receiving operations of the terminal device or the network device in the method provided by the embodiment of the present application.
  • the processor 620 can be a central processing unit (Central Processing Unit, CPU), and the processor can also be other general-purpose processors, digital signal processors (Digital Signal Processor, DSP), application-specific integrated circuits ( Application Specific Integrated Circuit, ASIC), off-the-shelf programmable gate array (Field-Programmable Gate Array, FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc.
  • a general-purpose processor may be a microprocessor or the processor may be any conventional processor, etc.
  • the communication interface 610 may be a transceiver, a circuit, a bus, a module, or other types of communication interfaces for communicating with other devices through a transmission medium.
  • the communication interface 610 is used for devices in the communication device 600 to communicate with other devices.
  • the processor 620 uses the communication interface 610 to send and receive data, and is used to implement the method described in Figure 2 of the above method embodiment.
  • Communication device 600 may also include at least one memory 630 for storing program instructions and/or data.
  • Memory 630 and processor 620 are coupled.
  • the coupling in the embodiment of this application is an indirect coupling or communication connection between devices, units or modules, which may be in electrical, mechanical or other forms, and is used for information interaction between devices, units or modules.
  • Processor 620 may cooperate with memory 630.
  • Processor 620 may execute program instructions stored in memory 630. At least one of the at least one memory may be included in the processor.
  • the processor 620 can read the software program in the memory 630, interpret and execute the instructions of the software program, and process the data of the software program.
  • the processor 620 performs baseband processing on the data to be sent, and then outputs the baseband signal to the radio frequency circuit (not shown in the figure).
  • the radio frequency circuit performs radio frequency processing on the baseband signal and then transmits the radio frequency signal through the antenna in the form of electromagnetic waves. Send outward.
  • the radio frequency circuit receives the radio frequency signal through the antenna, converts the radio frequency signal into a baseband signal, and outputs the baseband signal to the processor 620.
  • the processor 620 converts the baseband signal into data and processes the data. for processing.
  • the radio frequency circuit and antenna can be set up independently of the processor 620 that performs baseband processing.
  • the radio frequency circuit and antenna can be set up remotely and independently of the communication device. layout.
  • the embodiment of the present application does not limit the specific connection medium between the communication interface 610, the processor 620 and the memory 630.
  • the memory 630, the processor 620 and the communication interface 610 are connected through a bus 640 in Figure 6.
  • the bus is represented by a thick line in Figure 6.
  • the connection methods between other components are only schematically explained. , is not limited.
  • the bus can be divided into address bus, data bus, control bus, etc. For ease of presentation, only one thick line is used in Figure 6, but it does not mean that there is only one bus or one type of bus.
  • the communication device 600 When the communication device 600 is used in a terminal device, for example, when the communication device 600 is a chip or a chip system, what the communication interface 610 outputs or receives may be a baseband signal. When the communication device 600 is specifically a terminal device, what the communication interface 610 outputs or receives may be a radio frequency signal.
  • the communication device can perform the relevant steps of the terminal device or the network device in the foregoing method embodiments. For details, please refer to the implementation provided by each of the above steps, which will not be described again here.
  • each module included in them may adopt circuits, etc.
  • different modules can be located in the same component (for example, chip, circuit module, etc.) or in different components within the terminal.
  • at least some modules can be implemented in the form of software programs, which run on the integrated system within the terminal.
  • the processor and the remaining (if any) modules can be implemented in hardware such as circuits.
  • non-volatile memory may be volatile memory or non-volatile memory, or may include both volatile and non-volatile memory.
  • non-volatile memory can be read-only memory (ROM), programmable rom (PROM), erasable programmable read-only memory (erasable prom, EPROM), electrically removable memory.
  • EEPROM electrically programmable read-only memory
  • Volatile memory can be random access memory (RAM), which is used as an external cache.
  • RAM random access memory
  • SRAM static random access memory
  • DRAM dynamic random access memory
  • DRAM synchronous dynamic random access memory
  • SDRAM double data rate synchronous dynamic random access memory
  • double data rate SDRAM double data rate SDRAM
  • DDR SDRAM double data rate SDRAM
  • ESDRAM enhanced synchronous dynamic random access memory
  • Synchronously connect dynamic random access memory switchlink DRAM, SLDRAM
  • direct memory bus random access memory direct rambus RAM, DR RAM
  • An embodiment of the present application provides a chip.
  • the chip includes: processor and memory.
  • the number of processors may be one or more, and the number of memories may be one or more.
  • the processor can execute the above-mentioned side-link communication method shown in Figure 2 and the steps performed by related implementations.
  • FIG. 7 is a schematic structural diagram of a module device provided by an embodiment of the present application.
  • the module device 700 can perform the relevant steps of the terminal device or network device in the aforementioned method embodiment.
  • the module device 700 includes: a communication module 701, a power module 702, a storage module 703 and a chip module 704.
  • the power module 702 is used to provide power for the module device;
  • the storage module 703 is used to store data and/or instructions;
  • the communication module 701 is used to communicate with external devices;
  • the chip module 704 is used to call the storage module
  • the data and/or instructions stored in 703, combined with the communication module 701, can execute the above-mentioned side-link communication method shown in Figure 2, as well as the steps performed in related implementations.
  • An embodiment of the present application also provides a computer-readable storage medium.
  • the computer-readable storage medium stores a computer program, and the computer program includes program instructions.
  • the electronic device executes the program instructions, the steps performed by the terminal device in the side-link communication method shown in Figure 2 are implemented. Or implement the steps performed by the network device in the side link communication method shown in Figure 2.
  • the computer-readable storage medium may be an internal storage unit of the terminal device or network device described in any of the preceding embodiments, such as a hard disk or memory of the device.
  • the computer-readable storage medium may also be the terminal device or network device External storage devices, such as plug-in hard drives, smart media cards (SMC), secure digital (SD) cards, flash cards, etc. equipped on the device.
  • the computer-readable storage medium may also include both an internal storage unit and an external storage device of the terminal device or network device.
  • the computer-readable storage medium is used to store the computer program and other programs and data required by the terminal device or network device.
  • the computer-readable storage medium may also be used to temporarily store data that has been output or is to be output.
  • the computer-readable storage medium may be any available medium that a computer can access, or a data storage device such as a server or a data center that contains one or more sets of available media.
  • the available media may be magnetic media (eg, floppy disk, hard disk, tape), optical media (eg, high-density digital video disc (DVD)), or semiconductor media.
  • the semiconductor medium may be a solid state drive.
  • each device and product described in the above embodiments may be software modules/units or hardware modules/units, or they may be partly software modules/units and partly hardware modules/units.
  • each module/unit included therein can be implemented in the form of hardware such as circuits, or at least some of the modules/units can be implemented in the form of a software program.
  • the software program Running on the processor integrated inside the chip, the remaining (if any) modules/units can be implemented using circuits and other hardware methods; for various devices and products applied to or integrated into the chip module, each module/unit included in it can They are all implemented in the form of hardware such as circuits.
  • Different modules/units can be located in the same component of the chip module (such as chips, circuit modules, etc.) or in different components. Alternatively, at least some modules/units can be implemented in the form of software programs.
  • the software program runs on the processor integrated inside the chip module, and the remaining (if any) modules/units can be implemented using circuits and other hardware methods; for each device and product that is applied to or integrated in the data collection node, it includes Each module/unit can be implemented in the form of hardware such as circuits.
  • Different modules/units can be located in the same component (for example, chip, circuit module, etc.) or in different components in the terminal, or at least some of the modules/units can use software programs.
  • This software program runs on the processor integrated inside the data acquisition node, and the remaining (if any) modules/units can be implemented using circuits and other hardware methods.
  • the above embodiments may be implemented in whole or in part by software, hardware, firmware, or any other combination.
  • the above-described embodiments may be implemented in whole or in part in the form of a computer program product.
  • the computer program product includes one or more computer instructions or computer programs. When the computer instructions or computer programs are loaded or executed on the computer, the processes or functions described in the embodiments of the present application are generated in whole or in part.
  • the computer may be a general-purpose computer, a special-purpose computer, a computer network, or other programmable devices.
  • the computer instructions may be stored in or transmitted from one computer-readable storage medium to another, e.g., the computer instructions may be transferred from a website, computer, server, or data center via wired or wireless to another website, computer, server or data center.
  • the size of the sequence numbers of the above-mentioned processes does not mean the order of execution.
  • the execution order of each process should be determined by its functions and internal logic, and should not be used in the embodiments of the present application.
  • the implementation process constitutes any limitation.
  • the disclosed methods, devices and systems can be implemented in other ways.
  • the device embodiments described above are only illustrative; for example, the division of the units is only a logical function division, and there may be other division methods during actual implementation; for example, multiple units or components may be combined or can be integrated into another system, or some features can be ignored, or not implemented.
  • the coupling or direct coupling or communication connection between each other shown or discussed may be through some interfaces, and the indirect coupling or communication connection of the devices or units may be in electrical, mechanical or other forms.
  • the units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place, or they may be distributed to multiple network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.
  • each functional unit in various embodiments of the present invention may be integrated into one processing unit, each unit may be physically included separately, or two or more units may be integrated into one unit.
  • the above integrated unit can be implemented in the form of hardware or in the form of hardware plus software functional units.
  • the above-mentioned integrated unit implemented in the form of a software functional unit can be stored in a computer-readable storage medium.
  • the above-mentioned software functional unit is stored in a storage medium and includes a number of instructions to cause a computer device (which can be a personal computer, a server, or a gateway node, etc.) to execute some steps of the method described in various embodiments of the present invention.
  • the program can be stored in a computer-readable storage medium.
  • the program can be stored in a computer-readable storage medium.
  • the process may include the processes of the embodiments of each of the above methods.
  • the storage medium can be a magnetic disk, an optical disk, a read-only memory (Read-Only Memory, ROM) or a random access memory (Random Access Memory, RAM), etc.

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Abstract

本申请公开一种侧链路通信方法及通信装置，其中，侧链路通信方法包括：向网络设备发送指示信息，所述指示信息用于指示需要发送侧链路信道状态信息SL CSI的一个或多个载波；接收所述网络设备发送的第一资源分配信息，所述第一资源分配信息用于指示在所述载波上分配的侧链路传输资源；在所述侧链路传输资源上发送所述SL CSI。实施本申请，可以向网络设备指示在哪些载波上有待传输的SL CSI，从而便于网络设备分配对应载波的侧链路传输资源。

Description

侧链路通信方法及通信装置 技术领域
本申请涉及通信技术领域，尤其涉及一种侧链路通信方法及通信装置。
背景技术
在侧链路通信(Sidelink Communication)时，终端设备(User Equipment，UE)之间可以通过PC5接口进行信令和数据交互。支持侧链路通信的终端设备有两种资源分配模式，调度资源分配模式(也称为模式一)和自动资源选择模式(也称为模式二)。对于调度资源分配模式，发送终端设备需要在连接态，向网络设备发送调度请求(Scheduling Request，SR)，以请求分配用于侧链路传输的资源。对于自动资源选择模式，发送终端设备从资源池中选择用于侧链路传输的资源。
在侧链路通信中，为了提升信道传输效率，进行侧链路通信的终端设备可以向另一终端设备发送侧链路信道状态信息(Sidelink Channel State Information，SL CSI)。如果需要发送SL CSI的终端设备处于模式一，该终端设备需要触发SR以请求网络设备分配用于传输SL CSI的侧链路传输资源。但是目前网络设备针对终端设备要传输的SL CSI会配置一个SR配置信息。配置的SR用于传输1比特的信息，用于指示是否需要分配用于传输SL CSI的侧链路传输资源，这种方式仅仅适用于终端设备支持在一个载波上进行侧链路通信，如果终端设备支持在多个载波上进行侧链路通信，则可能在任一或多个载波上传输SL CSI，此时如何请求传输SL CSI的侧链路传输资源是一个亟待解决的问题。
发明内容
本申请实施例提供一种侧链路通信方法及通信装置，可以向网络设备指示在哪些载波上有待传输的SL CSI，从而便于网络设备分配对应载波的侧链路传输资源，支持终端设备在多个载波上进行侧链路通信的场景。
第一方面，本申请实施例提供了一种侧链路通信方法，该方法包括：
向网络设备发送指示信息，所述指示信息用于指示需要发送侧链路信道状态信息SL CSI的一个或多个载波；
接收所述网络设备发送的第一资源分配信息，所述第一资源分配信息用于指示在所述载波上分配的侧链路传输资源；
在所述侧链路传输资源上发送所述SL CSI。
基于第一方面的描述，终端设备可以通过指示信息向网络设备指示该终端设备存在待发送的SL CSI的载波，终端设备接收网络设备发送的第一资源分配信息，该第一资源分配信息用于指示网络设备在该载波上分配的侧链路传输资源，该终端设备在所分配的侧链路传输资源上发送SL CSI。通过本申请实施例，可以支持终端设备在多个载波上进行侧链路通信的场景，终端设备在某个或者某些载波上存在待发送的SL CSI时，向网络设备指示对应的载波，也便于网络设备分配对应载波的侧链路传输资源。
在一种可选的实施方式中，所述指示信息携带于第一调度请求SR中，所述第一SR用于请求网络设备分配传输SL CSI的侧链路传输资源。
通过该方式，可以将指示信息携带于SR中，从而与现有的***兼容，同时减少信令开销。
在一种可选的实施方式中，所述指示信息包括所述第一SR中的N个比特，所述N为大于或者等于2的整数。
通过该方式，可以通过第一SR中的至少两个比特来指示，即该至少两个比特通过不同的比特值组合可以指示多种载波，从而实现支持终端设备在多个载波上进行侧链路通信的场景。
在一种可选的实施方式中，所述N的取值是根据所述终端设备进行侧链路通信的载波数量确定，所述终端设备进行侧链路通信的载波包括所述存在待发送的SL CSI的载波。
通过该方式，可以通过N个比特指示终端设备进行侧链路通信的多个载波中的任一个或多个。
在一种可选的实施方式中，所述N个比特所表示的数值与所指示的载波之间存在对应关系；
其中，所述N个比特所表示的数值越大，则所述N个比特所指示的载波越大，或者，所述对应关系是由所述网络设备配置的。
通过该方式，可以便于网络设备确定N个比特所指示的载波。
在一种可选的实施方式中，所述第一SR与混合自动重传请求HARQ反馈信息复用在第一上行传输资源上传输，所述第一上行传输资源是为所述HARQ反馈信息分配的传输资源。
通过该方式，将携带指示信息的第一SR与HARQ反馈信息进行复用，从而节省传输资源。
在一种可选的实施方式中，所述第一SR与下行信道的CSI复用在第二上行传输资源上传输，所述第二上行传输资源是为所述下行信道的CSI分配的传输资源。
通过该方式，将携带指示信息的第一SR与下行信道的CSI复用，从而节省传输资源。
在一种可选的实施方式中，所述指示信息携带于数据缓存状态报告BSR中。
通过该方式，将指示信息携带于BSR中，避免对现有的SR进行更改，与现有***兼容。
在一种可选的实施方式中，所述指示信息包括所述BSR中的M个比特，所述M为大于或者等于1的整数。
通过该方式，通过BSR中的M个比特来指示终端设备存在待传输的SL CSI所在的载波，可以避免对现有的SR进行更改，与现有***兼容。
在一种可选的实施方式中，所述M个比特中各个比特分别用于指示在不同的载波上是否存在待发送的SL CSI。
通过该方式，一个比特指示一个载波是否存在待发送的SL CSI，指示方式简单直观。
在一种可选的实施方式中，所述方法还包括：
向所述网络设备发送第二SR，所述第二SR用于请求网络设备分配上行传输资源；
接收所述网络设备发送的第二资源分配信息，所述第二资源分配信息用于指示第三上行传输资源；
所述向网络设备发送指示信息，包括：
在所述第三上行传输资源上向所述网络设备发送携带所述指示信息的BSR。
通过该方式，可以不用改变现有SR配置，通过BSR携带指示信息，从而与现有***兼容。
第二方面，本申请实施例提供了一种侧链路通信方法，该方法包括：
接收终端设备发送的指示信息，所述指示信息用于指示需要发送侧链路信道状态信息SLCSI的一个或多个载波；
响应于所述指示信息，向所述终端设备发送第一资源分配信息，所述第一资源分配信息用于指示在所述载波上分配的侧链路传输资源。
基于第二方面的描述，终端设备可以通过指示信息向网络设备指示该终端设备在某个载波上存在待发送的SL CSI，网络设备在该载波上分配的侧链路传输资源。通过本申请实施例，可以支持终端设备在多个载波上进行侧链路通信的场景，终端设备在某个或者某些载波上存在待发送的SL CSI时，向网络设备指示对应的载波，也便于网络设备分配对应载波的侧链路传输资源。
在一种可选的实施方式中，所述指示信息携带于第一调度请求SR中，所述第一SR用于请求网络设备分配传输SL CSI的侧链路传输资源。
在一种可选的实施方式中，所述指示信息包括所述第一SR中的N个比特，所述N为大于或者等于2的整数。
在一种可选的实施方式中，所述N的取值是根据所述终端设备进行侧链路通信的载波数量确定，所述终端设备进行侧链路通信的载波包括所述存在待发送的SL CSI的载波。
在一种可选的实施方式中，所述N个比特所表示的数值与所指示的载波之间存在对应关系；
其中，所述N个比特所表示的数值越大，则所述N个比特所指示的载波越大，或者，所述对应关系是由所述网络设备配置的。
在一种可选的实施方式中，所述第一SR与混合自动重传请求HARQ反馈信息复用在第一上行传输资源上传输，所述第一上行传输资源是为所述HARQ反馈信息分配的传输资源。在一种可选的实施方式中，所述第一SR与下行信道的CSI复用在第二上行传输资源上传输，所述第二上行传输资源是为所述下行信道的CSI分配的传输资源。
在一种可选的实施方式中，所述指示信息携带于数据缓存状态报告BSR中。
在一种可选的实施方式中，所述指示信息包括所述BSR中的M个比特，所述M为大于或者等于1的整数。
在一种可选的实施方式中，所述M个比特中各个比特分别用于指示在不同的载波上是否存在待发送的SL CSI。
在一种可选的实施方式中，所述方法还包括：
接收所述终端设备发送的第二SR，所述第二SR用于请求网络设备分配上行传输资源；
响应于所述第二SR，向所述终端设备发送第二资源分配信息，所述第二资源分配信息用于指示第三上行传输资源；
所述接收终端设备发送的指示信息，包括：
在所述第三上行传输资源上接收所述终端设备发送的携带所述指示信息的BSR。
第三方面，本申请实施例提供了一种通信装置，该通信装置包括用于实现上述第一方面和第二方面中任一种可能的实现方式中的方法的单元。
第四方面，本申请实施例提供了一种通信装置，该通信装置包括处理器和存储器，处理器和存储器相互连接，存储器用于存储计算机程序，计算机程序包括程序指令，处理器被配置用于调用该程序指令，以执行如第一方面或第一方面任一可选的实施方式所述的方法，或者，执行如第二方面或第二方面任一可选的实施方式所述的方法。
第五方面，本申请实施例提供一种芯片，该芯片包括处理器与接口，处理器和接口耦合； 接口用于接收或输出信号，处理器用于执行代码指令，以执行如第一方面或第一方面任一可选的实施方式所述的方法，或者，执行如第二方面或第二方面任一可选的实施方式所述的方法。
第六方面，本申请实施例提供一种模组设备，其特征在于，该模组设备包括通信模组、电源模组、存储模组以及芯片模组，其中：该电源模组用于为该模组设备提供电能；该存储模组用于存储数据和/或指令；该通信模组与外部设备通信；该芯片模组用于调用存储模组存储的数据和/或指令，结合通信模组，执行如第一方面或第一方面任一可选的实施方式所述的方法，或者，执行如第二方面或第二方面任一可选的实施方式所述的方法。
第七方面，本申请实施例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，所述计算机程序包括程序指令，当电子设备执行所述程序指令时，以实现如第一方面或第一方面任一可选的实施方式所述的方法，或者，执行如第二方面或第二方面任一可选的实施方式所述的方法。
附图说明
图1是本申请实施例提供的一种通信***的结构示意图；
图2是本申请实施例提供的一种侧链路通信方法的流程示意图；
图3a是本申请实施例提供的一种SL CSI报告格式示意图；
图3b是本申请实施例提供的一种BSR的格式示意图；
图4是本申请实施例提供的一种通信装置的结构示意图；
图5是本申请实施例提供的另一种通信装置的结构示意图；
图6是本申请实施例提供的又一种通信装置的结构示意图；
图7是本申请实施例提供的一种模组设备的结构示意图。
具体实施方式
本申请实施例中，除非另有说明，字符“/”表示前后关联对象是一种或的关系。例如，A/B可以表示A或B。“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这三种情况。
需要指出的是，本申请实施例中涉及的“第一”、“第二”等词汇，仅用于区分描述目的，而不能理解为指示或暗示相对重要性或者隐含指明所指示的技术特征的数量，也不能理解为指示或暗示顺序。
本申请实施例中，“至少一个”是指一个或者多个，“多个”是指两个或两个以上。此外，“以下至少一项(个)”或者其类似表达，是指的这些项中的任意组合，可以包括单项(个)或复数项(个)的任意组合。例如，A、B或C中的至少一项(个)，可以表示：A，B，C，A和B，A和C，B和C，或A、B和C。其中，A、B、C中的每个本身可以是元素，也可以是包含一个或多个元素的集合。
本申请实施例中，“示例的”、“在一些实施例中”、“在另一实施例中”等用于表示作例子、例证或说明。本申请中被描述为“示例”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，使用示例的一词旨在以具体方式呈现概念。
本申请实施例中的“的(of)”、“相应的(corresponding，relevant)”和“对应的(corresponding)”有时可以混用，应当指出的是，在不强调其区别时，所要表达的含义是一致的。本申请实施例中，通信、传输有时可以混用，应当指出的是，在不强调其区别时，其所表达的含义是一致的。例如，传输可以包括发送和/或接收，可以为名词，也可以是动词。
本申请实施例中涉及的等于可以与大于连用，适用于大于时所采用的技术方案，也可以与小于连用，适用于小于时所采用的技术方案。需要说明的是，当等于与大于连用时，不能与小于连用；当等于与小于连用时，不与大于连用。
以下对本申请实施例涉及的部分术语进行解释说明，以便于本领域技术人员理解。
1、终端设备。本申请实施例中终端设备是一种具有无线收发功能的设备，可以称之为终端(terminal)、用户设备(user equipment，UE)、移动台(mobile station，MS)、移动终端(mobile terminal，MT)、接入终端设备、车载终端设备、工业控制终端设备、UE单元、UE站、移动站、远方站、远程终端设备、移动设备、UE终端设备、无线通信设备、UE代理或UE装置等。终端设备可以是固定的或者移动的。需要说明的是，终端设备可以支持至少一种无线通信技术，例如长期演进(long term evolution，LTE)、新空口(new radio，NR)等。例如，终端设备可以是手机(mobile phone)、平板电脑(pad)、台式机、笔记本电脑、一体机、车载终端、虚拟现实(virtual reality，VR)终端设备、增强现实(augmented reality，AR)终端设备、工业控制(industrial control)中的无线终端、无人驾驶(self driving)中的无线终端、远程手术(remote medical surgery)中的无线终端、智能电网(smart grid)中的无线终端、运输安全(transportation safety)中的无线终端、智慧城市(smart city)中的无线终端、智慧家庭(smart home)中的无线终端、蜂窝电话、无绳电话、会话启动协议(session initiation protocol，SIP)电话、无线本地环路(wireless local loop，WLL)站、个人数字助理(personal digital assistant，PDA)、具有无线通信功能的手持设备、计算设备或连接到无线调制解调器的其它处理设备、 可穿戴设备、未来移动通信网络中的终端设备或者未来演进的公共移动陆地网络(public land mobile network，PLMN)中的终端设备等。在本申请的一些实施例中，终端设备还可以是具有收发功能的装置，例如芯片***。其中，芯片***可以包括芯片，还可以包括其它分立器件。
2、网络设备。本申请实施例中网络设备是一种为终端设备提供无线通信功能的设备，也可称之为接入网设备、无线接入网(radio access network，RAN)设备等。其中，网络设备可以支持至少一种无线通信技术，例如LTE、NR等。示例的，网络设备包括但不限于：第五代移动通信***(5th-generation，5G)中的下一代基站(generation nodeB，gNB)、演进型节点B(evolved node B，eNB)、无线网络控制器(radio network controller，RNC)、节点B(node B，NB)、基站控制器(base station controller，BSC)、基站收发台(base transceiver station，BTS)、家庭基站(例如，home evolved node B、或home node B，HNB)、基带单元(baseband unit，BBU)、收发点(transmitting and receiving point，TRP)、发射点(transmitting point，TP)、移动交换中心等。网络设备还可以是云无线接入网络(cloud radio access network，CRAN)场景下的无线控制器、集中单元(centralized unit，CU)、和/或分布单元(distributed unit，DU)，或者网络设备可以为中继站、接入点、车载设备、终端设备、可穿戴设备以及未来移动通信中的网络设备或者未来演进的PLMN中的网络设备等。在一些实施例中，网络设备还可以为具有为终端设备提供无线通信功能的装置，例如芯片***。示例的，芯片***可以包括芯片，还可以包括其它分立器件。
3、资源分配模式
在侧链路通信(Sidelink Communication)时，终端设备之间可以通过PC5接口进行信令和数据交互。在进行侧链路通信时，终端设备可以在网络覆盖范围内或者在网络覆盖范围之外。当终端设备在网络覆盖范围之内时，该终端设备可以处于任何状态：连接态，空闲态，或非激活Inactive态。
支持侧链路通信的终端设备有两种资源分配模式：调度资源分配模式(也称为模式一)和自动资源选择模式(也称为模式二)。对于调度资源分配模式，发送终端(Tx UE)需要在连接态，向网络设备发送SR请求，以请求分配用于侧链路通信的传输资源。网络设备调度侧链路传输资源用于传输侧链路控制信息和数据。
对于自动资源选择模式，发送终端可以处于连接态，或者处于空闲态，或者处于Inactive态；可以在网络覆盖范围之内，也可以在网络覆盖范围之外。发送终端自己从资源池中选择侧链路传输资源。
请参阅图1，图1是本申请实施例提供的一种通信***的结构示意图。该通信***可以包括但不限于一个或多个网络设备、一个或多个终端设备，如图1以一个网络设备101和两个终端设备为例，两个终端设备分别为终端设备102和终端设备103，终端设备102和终端设备103可以进行侧链路通信。其中，图1中的网络设备101以基站为例，终端设备102和终端设备103以手机为例，终端设备102或终端设备103可以和网络设备101建立无线链路进行通信，终端设备和网络设备之间建立的无线链路可以为上行链路和/或下行链路，相应的，也可以称为上行信道和/或下行信道。图1所示的通信***包括但不限于网络设备和终端设备，还可以包括其他的通信设备，图1所示的设备数量和形态用于举例并不构成对本申请实施例的限定。
在侧链路通信中，为了提升信道传输效率，开展侧链路通信的终端设备可以触发对端的终端设备发送SL CSI，以便对端终端设备获得SL CSI之后根据该信息采取相应的传输参数。如果需要发送SL CSI的终端设备处于模式一，在没有侧链路传输资源的情况下，该终端设备需要向网络设备发送SR，以请求网络设备分配用于传输SL CSI的侧链路传输资源。目前协议中终端设备仅支持在一个载波上进行侧链路通信，网络设备针对可能的SL CSI传输会配置一个SR配置，该SR配置可以配置SL CSI SR所对应的时频资源以及周期等。其中，SL CSISR为用于请求传输SL CSI的侧链路传输资源的SR。其中，SL CSI SR用于传输1比特的信息，通过该比特可以指示是否请求用于传输SL CSI的侧链路传输资源。
如果引入多载波的侧链路通信Sidelink，即一个终端设备可以同时在多个载波上与相同的、或不同的终端设备进行侧链路通信，此时这个终端设备可能在该多个载波中任一个载波或多个载波上存在待发送的SL CSI。如果该终端设备处于连接态，且采用模式一的资源调度方式，则该终端设备需要向网络设备申请传输SL CSI的侧链路传输资源，然而按照现有的SR配置，终端设备传输1比特信息不能使网络设备准确获知需要传输SL CSI所在的载波，进而网络设备不能及时为终端设备分配侧链路传输资源。如果为每个载波配置一个SR也不可行，因为SR配置数量有限，这些SR配置需要用于上行信道和侧链路信道的数据传输请求，不能所有的SR配置用于SL CSI传输需求。为解决上述问题，本申请终端设备向网络设备请求用于传输SL CSI的侧链路传输资源时，发送指示信息，该指示信息用于指示终端设备在哪个或哪些载波上存在待发送的SL CSI，从而网络设备分配在相应载波上的侧链路传输资源。这种方式不需要采用多个SR配置用于SL CSI的传输资源调度请求，并且也支持终端设备在多个载波上进行侧链路通信场景。便于网络设备分配对应载波上的用于传输SL CSI的侧链路传输资源。
需要说明的是，本申请实施例中的载波可以替换为“频率”，以下不再赘述。
如图2所示，为本申请提供的侧链路通信方法一个实施例的流程示意图，如图2所示，该方法可以包括但不限于以下步骤：
301，终端设备向网络设备发送指示信息，所述指示信息用于指示需要发送侧链路信道状态信息SL CSI的一个或多个载波，也可以称为，所述指示信息用于指示终端设备存在待发送的侧链路信道状态信息SL CSI的载波，相应的，网络设备接收该指示信息。
其中，该终端设备可以是指在侧链路进行载波聚合的终端设备。
在一个实施例中，终端设备可以在多个载波上进行侧链路通信，或者，也可以称为终端设备在侧链路进行载波聚合。为描述方便，比如，终端设备在Q个载波上进行侧链路通信，Q可以为大于或者等于2的整数。如果终端设备在某个或某些载波上存在待发送的SL CSI，则该终端设备可以向网络设备请求用于传输SL CSI的侧链路传输资源，为便于描述，本申请将存在待发送的SL CSI的载波称为第一载波。其中，第一载波可以包括一个或多个载波，换言之，终端设备可以是在一个或多个载波上存在待发送的SL CSI。该Q个载波包括第一载波，换言之，终端设备可以在该Q个载波中的一个或多个载波上存在待发送的SL CSI。示例性的，Q可以等于8，该终端设备可以在8个载波上与相同或不同的终端设备进行侧链路通信，但是终端设备可以是在该8个载波中的任一个或多个载波上存在待发送的SL CSI，为便于描述，本申请将存在待发送的SL CSI的一个或多个载波统称为第一载波。上述SL CSI用于描述侧链路信道的信道质量相关的信息。例如，SL CSI描述无线信号在发射机和接收机之间的侧链路传播效果，包含距离、散射、衰落等对信号的影响。如图3a所示，为SL CSI的一种结构示意图，如图所示，该SL CSI包括一个字节。其中，信道质量指示(Channel Quality Indication，CQI)占用4个比特。
其中，终端设备可以是采用模式一(调度资源分配模式)的方式获取用于传输SL CSI的侧链路传输资源，即由网络设备为终端设备分配用于传输SL CSI的侧链路传输资源。为了使网络设备能够识别终端设备在哪个或者哪些载波上存在待发送的SL CSI，以便于网络设备分配对应载波上的侧链路传输资源，该终端设备向网络设备发送指示信息，该指示信息用于指示终端设备存在待发送的SL CSI的载波。
在一些实施方式中，该指示信息可以包括N个比特，其中，N为大于或者等于2的整数，以通过该N个比特来指示不同的载波和/或载波组合。
在一些实施例中，该N的取值可以是根据该终端设备进行侧链路通信的载波数量确定的。
作为一示例，若终端设备在Q个载波上进行侧链路通信，则N的取值可以是log2Q向上 取整。比如，Q为8，则可以通过3个比特来指示第一载波，该种方式可以理解为将N个比特所表示数值来指示第一载波。其中，N个比特所表示数值可以理解为，该N个比特作为一个整体所表示的二进制数值，例如，N为3，如果该N个比特为000，则所表示的数值为0；如果该N个比特为001，则所表示的数值为1；如果该N个比特为010，则所表示的数值为2。该实施方式中，N个比特所表示数值与所指示的载波之间存在对应关系，当终端设备在第一载波上存在待发送的SL CSI时，确定该第一载波所对应的数值，该数值所对应的比特信息即为指示信息。其中，该对应关系可以是一种默认规则，比如，N个比特所表示数值越大，那么其所指示的载波也越大。比如，终端设备在8个载波上进行侧链路通信，该8个载波从小到大依次为F1、F2....F8，那么该8个载波可以依次通过比特000，001，010，011，100，101，110，111来指示。当终端设备在某个载波有SL CSI待发送时，可以发送包含对应比特信息的指示信息。比如终端设备在载波F2上有待发送的SL CSI时，终端设备可以发送携带001的指示信息，即指示信息为001。可理解，N个比特所表示数值与所指示的载波之间的对应关系也可以是由网络设备配置的。在一些实施方式中，网络设备也可以仅配置终端设备进行侧链路通信的多个载波中的部分载波与N比特所表示数值之间的对应关系，如终端设备在F1、F2....F8进行侧链路通信(或者也可以称为侧链路载波聚合)，但是终端设备仅在F1、F2、F3、F4上采用模式一的资源调度方式，在其他载波上采用模式二的资源调度方式，此时仅需要使用2比特指示F1、F2、F3、F4上哪个载波上存在待传输的SL CSI，网络设备可以配置这四个载波与2比特所表示数值之间的对应关系，其他载波上因为是终端设备自主资源选择，即使有待传输的SL CSI，由终端设备自主选择传输资源，不需要通知网络设备分配传输资源。
作为另一示例，N的取值也可以是与Q的取值相同，即该N个比特中的一个比特对应一个载波，通过该比特的取值可以用于指示对应载波上是否存在待发送的SL CSI。比如，若比特取值为0，指示对应载波上不存在待发送的SL CSI，若比特取值为1，指示对应载波上存在待发送的SL CSI。
作为又一示例，终端设备可能在一个载波上存在待发送的SL CSI，即第一载波包括一个载波，也可能在多个载波上存在待发送的SL CSI，即第一载波包括多个载波。为了便于指示信息可以指示一个载波，也可以指示多个载波组合，本申请实施例中N的取值可以是根据Q个载波的各种组合的可能性确定。比如，Q取值为8，该N个比特可以指示单个载波或者两个载波组合，则N的取值可以是log2W向上取整，其中，即需要6个比特来指示。该6个比特所表示数值不同，则对应指示不同的载波或载波组合。比如，用000000-000111 来分别指示8个载波中的任一个载波，001000-100011分别指示8个载波中的两个载波组合。采用该方式，当终端设备在多个载波上进行侧链路通信时，也可以只需要一个SR配置来指示任一个载波或载波组合。
在一些实施例中，也可以通过指示信息中包含的不同比特数量来指示不同数量的载波上存在待传输的SL CSI，比如，如果指示信息中包含3个比特，则该指示信息指示Q个载波中的一个载波上存在待传输的SL CSI。如果指示信息中包含5个比特，则该指示信息指示Q个载波中的两个载波上同时存在待传输的SL CSI，以此类推。可理解，若该指示信息是携带于SR中，则该包含比特数量的指示信息可以是通过不同SR配置所配置的SR，即需要多个SR配置。
在一些实施例中，上述指示信息可以与混合自动重传请求(Hybrid Automatic Repeat reQuest，HARQ)反馈信息进行复用。示例性的，该指示信息可以与HARQ反馈信息复用在第一上行传输资源上传输，其中，第一上行传输资源可以是为HARQ反馈信息分配的传输资源。例如，当终端设备需要在时隙n发送指示信息时，该终端设备也需要在该时隙发送HARQ反馈信息，该HARQ反馈信息可以为针对下行数据的HARQ反馈ACK/NACK。终端设备可以确定一个物理上行链路控制信道(Physical Uplink Control Channel，PUCCH)资源作为第一上行传输资源，以便能够同时传输指示信息和HARQ反馈信息。示例性的，终端设备需要反馈的HARQ反馈信息包括1比特的HARQ ACK/NACK，终端设备发送的指示信息包括3比特，则终端设备一共需要传输4比特，比如，第1个比特是HARQ反馈的比特，后3比特表示指示信息，可理解，也可以是前3个比特表示指示信息，最后1个比特表示HARQ反馈，本申请不作限定。终端设备从网络配置的可以传输不同比特长度的PUCCH资源中确定一个可以承载4比特的资源，作为第一上行传输资源，在这个时隙将4比特信息承载在PUCCH资源上向网络发送。相应的，网络设备解析获得4比特，网络设备通过之前对该终端设备的调度信息可以确定终端设备在时隙n仅需要反馈1比特的HARQ ACK/NACK，而终端设备传输了4比特的信息，则网络设备确定终端设备发送了3比特的信息表示指示信息，进而可以通过该3比特信息获知终端设备在哪个载波上有SL CSI待传输，可以及时为终端设备在该载波上分配侧链路传输资源。
可理解，终端设备在Uu接口(即终端设备和网络设备之间的接口)可能有多个数据无线承载(Data Radio Bearer，DRB)，网络设备可以针对该多个DRB配置不同的SR。当终端设备在某个DRB有数据需要传输，终端设备会发送对应的SR，为便于描述，本申请将其称为第三SR，该第三SR用于请求网络设备分配上行传输资源以传输DRB的数据。第三SR也可 以与HARQ反馈信息进行复用，为了便于网络设备区分究竟是因为DRB有数据待传输触发的第三SR，还是存在待传输的SL CSI触发的指示信息，本申请实施例中指示信息和第三SR中携带的比特数不同。比如指示信息包括3个比特，第三SR可以包括2比特，或者4比特。
在一些实施例中，上述指示信息可以与下行信道的CSI(也可以称为Uu接口的CSI)进行复用。CSI可用于描述信道质量相关的信息。例如，CSI描述无线信号在发射机和接收机之间的传播效果，包含距离、散射、衰落等对信号的影响。对下行传输而言，下行信道的CSI可用于终端设备向网络设备反馈下行信道质量，以便网络设备根据下行信道的CSI进行资源调度、波束管理、移动性管理、速率匹配等处理，以提升通信质量。终端设备向网络设备发送的下行信道的CSI可携带在CSI报告(reports)中。例如，下行信道的CSI可以包括下述至少一项：CSI参考信号资源指示索引(CSI-RS resource indicator，CRI)、秩指示索引(rank indicator，RI)、信道质量指示索引(channel quality indicator，CQI)、预编码矩阵指示索引(precoding matrix indicator，PMI)、层指示索引(layer indicator，LI)、层1参考信号接收功率(layer 1 reference signal received power，L1-RSRP)或层1信号与干扰加噪比(layer 1 signal-to-noise and interference ratio，L1-SINR)。
示例性的，该指示信息可以与下行信道的CSI复用在第二上行传输资源上传输，其中，第二上行传输资源可以是为下行信道的CSI分配的传输资源。例如，当终端设备需要在时隙n发送指示信息时，该终端设备也需要在该时隙发送下行信道的CSI。终端设备可以确定一个PUCCH资源作为第二上行传输资源，以便能够同时传输指示信息和下行信道的CSI。
在一些实施例中，上述用于请求网络设备分配上行传输资源以传输DRB的数据的第三SR也可以与下行信道的CSI复用，为了便于网络设备区分究竟是因为DRB有数据待传输触发的第三SR，还是存在待传输的SL CSI触发的指示信息，本申请实施例中指示信息和第三SR中携带的比特数不同。比如指示信息包括3个比特，第三SR可以包括2比特，或者4比特。
在一些实施例中，上述用于指示终端设备存在待发送的SL CSI的载波的指示信息可以携带于第一SR中，该第一SR可以是用于请求网络设备分配传输SL CSI的侧链路传输资源。
在一个实施例中，上述第一SR可以是一种新的SR配置，需要说明的是，该新的SR配置是相对于现有的终端设备支持在一个载波上进行侧链路通信时，网络设备所配置的包含1比特信息的SR配置而言的，为便于描述，本申请将新的SR配置称为第一SR配置，终端设备支持在一个载波上进行侧链路通信时，网络设备所配置的包含1比特信息的SR配置称为第二SR配置。当终端设备在多个载波上进行侧链路通信时，该终端设备根据第一SR配置发 送上述第一SR，并忽视网络设备发送的第二SR配置。当终端设备切换到(或回退到)在一个载波上进行侧链路通信时，该终端设备又可以根据第二SR配置发送第二SR，而不需要网络设备重新配置SR，该第二SR包括1比特信息。
第二种可选的实施方式中，上述用于指示终端设备在第一载波上存在待发送的SL CSI的指示信息可以携带于缓存状态报告(Buffer Status Report，BSR)中。如图3b所示，为BSR的一种结构示意图，如图所示，终端设备在8个载波上进行侧链路通信，该8个载波分别为F1、F2、F3…F8，一个比特用于指示一个载波。比如，第一个比特为1，则指示载波F1上存在待发送的SL CSI。可理解，若终端设备在16个载波上进行侧链路通信，则BSR可以包括16个比特。
在一些实施例中，在终端设备发送携带上述指示信息的BSR之前，该终端设备向网络设备发送第二SR，该第二SR用于请求网络设备分配上行传输资源。为了与现有***兼容，该第二SR可以沿用终端设备仅支持在一个载波上进行侧链路通信时的SR配置，即第二SR中包含1比特的信息。网络设备在接收到第二SR时，为终端设备分配第三上行传输资源，并通过第二资源分配信息指示给终端设备。终端设备在所指示的第三上行传输资源上发送携带上述指示信息的BSR。
相对于现有的在侧链路场景下请求资源的BSR需要包含待传输的数据比特数等信息需要许多的比特开销，本申请由于待传输的SL CSI包含的比特数比较固定，因此引入一个简单的在侧链路场景下请求资源的BSR，该BSR不需要指示SL CSI的数据比特数，而指示第一载波，从而可以节省比特开销。新引入的携带上述指示信息的BSR，比现有包含待传输的数据比特数的BSR的优先级高，因此终端设备一旦获得上行传输资源，优先传输新引入的BSR。
302，网络设备响应于指示信息，发送第一资源分配信息，所述第一资源分配信息用于指示在所述第一载波上分配的侧链路传输资源，相应的，终端设备接收该第一资源分配信息。
在一些实施例中，网络设备通过指示信息可以确定终端设备在哪个或哪些载波上存在待发送的SL CSI。网络设备为终端设备分配对应载波上的侧链路传输资源，并通过第一资源分配信息指示给终端设备。
303，终端设备在侧链路传输资源上发送SL CSI。
在一些实施例中，终端设备接收网络设备发送的第一资源分配信息，并通过该第一资源分配信息确定网络设备所分配的侧链路传输资源。该终端设备在侧链路传输资源上发送SL CSI。如果分配的侧链路传输资源还有富余，终端设备可以传输其他的侧链路数据/信令。在某些拥塞场景，网络设备不能及时分配侧链路传输资源，等到终端设备获得侧链路传输资源 时，SL CSI已经过时，此时终端设备可以用这个侧链路传输资源传输其他的侧链路数据/信令。
本申请实施例中，终端设备可以通过指示信息向网络设备指示该终端设备存在待发送的SL CSI的载波，终端设备接收网络设备发送的第一资源分配信息，该第一资源分配信息用于指示网络设备在该载波上分配的侧链路传输资源，该终端设备在所分配的侧链路传输资源上发送SL CSI。通过本申请实施例，可以支持终端设备在多个载波上进行侧链路通信的场景，终端设备在某个或者某些载波上存在待发送的SL CSI时，向网络设备指示对应的载波，也便于网络设备分配对应载波的侧链路传输资源。
请参见图4，图4是本申请实施例提供的一种通信装置的结构示意图。该装置可以是终端设备，也可以是终端设备中的装置，比如，可以是该终端设备中的芯片或芯片模组，或者是能够和终端设备匹配使用的装置。图4所示的通信装置400可以包括发送单元401和接收单元402。其中：
发送单元401，用于向网络设备发送指示信息，所述指示信息用于指示需要发送侧链路信道状态信息SL CSI的载波；
接收单元402，用于接收所述网络设备发送的第一资源分配信息，所述第一资源分配信息用于指示所述载波上分配的侧链路传输资源；
发送单元401，还用于在所述侧链路传输资源上发送所述SL CSI。
在一种可选的实施方式中，所述指示信息携带于第一调度请求SR中，所述第一SR用于请求网络设备分配传输SL CSI的侧链路传输资源。
在一种可选的实施方式中，所述指示信息包括所述第一SR中的N个比特，所述N为大于或者等于2的整数。
在一种可选的实施方式中，所述N的取值是根据所述终端设备进行侧链路通信的载波数量确定，所述终端设备进行侧链路通信的载波包括所述存在待发送的SL CSI的载波。
在一种可选的实施方式中，所述N个比特所表示的数值与所指示的载波之间存在对应关系；
其中，所述N个比特所表示的数值越大，则所述N个比特所指示的载波越大，或者，所述对应关系是由所述网络设备配置的。
在一种可选的实施方式中，所述第一SR与混合自动重传请求HARQ反馈信息复用在第一上行传输资源上传输，所述第一上行传输资源是为所述HARQ反馈信息分配的传输资源。
在一种可选的实施方式中，所述第一SR与下行信道的CSI复用在第二上行传输资源上 传输，所述第二上行传输资源是为所述下行信道的CSI分配的传输资源。
在一种可选的实施方式中，所述指示信息携带于数据缓存状态报告BSR中。
在一种可选的实施方式中，所述指示信息包括所述BSR中的M个比特，所述M为大于或者等于1的整数。
在一种可选的实施方式中，所述M个比特中各个比特分别用于指示在不同的载波上是否存在待发送的SL CSI。
在一种可选的实施方式中，发送单元401还用于向所述网络设备发送第二SR，所述第二SR用于请求网络设备分配上行传输资源；
接收单元402还用于接收所述网络设备发送的第二资源分配信息，所述第二资源分配信息用于指示第三上行传输资源；
所述发送单元401具体用于在所述第三上行传输资源上向所述网络设备发送携带所述指示信息的BSR。
其中，该实施方式的相关内容可参见上述方法实施例的相关内容。此处不再详述。
请参见图5，图5是本申请实施例提供的另一种通信装置的结构示意图。该装置可以是网络设备，也可以是网络设备中的装置，比如，可以是该网络设备中的芯片或芯片模组，或者是能够和网络设备匹配使用的装置。图5所示的通信装置500可以包括接收单元501和发送单元502。其中：
接收单元501，用于接收终端设备发送的指示信息，所述指示信息用于指示需要发送侧链路信道状态信息SL CSI的载波；
发送单元502，用于响应于所述指示信息，向所述终端设备发送第一资源分配信息，所述第一资源分配信息用于指示在所述载波上分配的侧链路传输资源。
在一种可选的实施方式中，所述指示信息携带于第一调度请求SR中，所述第一SR用于请求网络设备分配传输SL CSI的侧链路传输资源。
在一种可选的实施方式中，所述指示信息包括所述第一SR中的N个比特，所述N为大于或者等于2的整数。
在一种可选的实施方式中，所述N的取值是根据所述终端设备进行侧链路通信的载波数量确定，所述终端设备进行侧链路通信的载波包括所述存在待发送的SL CSI的载波。
在一种可选的实施方式中，所述N个比特所表示的数值与所指示的载波之间存在对应关系；
其中，所述N个比特所表示的数值越大，则所述N个比特所指示的载波越大，或者，所述对应关系是由所述网络设备配置的。
在一种可选的实施方式中，所述第一SR与混合自动重传请求HARQ反馈信息复用在第一上行传输资源上传输，所述第一上行传输资源是为所述HARQ反馈信息分配的传输资源。
在一种可选的实施方式中，所述第一SR与下行信道的CSI复用在第二上行传输资源上传输，所述第二上行传输资源是为所述下行信道的CSI分配的传输资源。
在一种可选的实施方式中，所述指示信息携带于数据缓存状态报告BSR中。
在一种可选的实施方式中，所述指示信息包括所述BSR中的M个比特，所述M为大于或者等于1的整数。
在一种可选的实施方式中，所述M个比特中各个比特分别用于指示在不同的载波上是否存在待发送的SL CSI。
接收单元501还用于接收所述终端设备发送的第二SR，所述第二SR用于请求网络设备分配上行传输资源；
发送单元502还用于响应于所述第二SR，向所述终端设备发送第二资源分配信息，所述第二资源分配信息用于指示第三上行传输资源；
所述接收单元具体用于在所述第三上行传输资源上接收所述终端设备发送的携带所述指示信息的BSR。
其中，该实施方式的相关内容可参见上述方法实施例的相关内容。此处不再详述。
请参见图6，图6是本申请实施例提供的又一种通信装置的结构示意图，用于实现上述图2中终端设备的功能。该通信装置600可以是终端设备或用于终端设备的装置。用于终端设备的装置可以为终端设备内的芯片***或芯片。其中，芯片***可以由芯片构成，也可以包含芯片和其他分立器件。
或者，通信装置600，用于实现上述图2中网络设备的功能。该通信装置可以是网络设备或用于网络设备的装置。用于网络设备的装置可以为网络设备内的芯片***或芯片。
通信装置600包括至少一个处理器620，用于实现本申请实施例提供的方法中终端设备或网络设备的数据处理功能。通信装置600还可以包括通信接口610，用于实现本申请实施例提供的方法中终端设备或网络设备的收发操作。在本申请实施例中，处理器620可以是中央处理单元(Central Processing Unit，CPU)，该处理器还可以是其他通用处理器、数字信号处理器(Digital Signal Processor，DSP)、专用集成电路(Application Specific Integrated Circuit， ASIC)、现成可编程门阵列(Field-Programmable Gate Array，FPGA)或者其他可编程逻辑器件、分立门或者晶体管逻辑器件、分立硬件组件等。通用处理器可以是微处理器或者该处理器也可以是任何常规的处理器等。在本申请实施例中，通信接口610可以是收发器、电路、总线、模块或其它类型的通信接口，用于通过传输介质和其它设备进行通信。例如，通信接口610用于通信装置600中的装置可以和其它设备进行通信。处理器620利用通信接口610收发数据，并用于实现上述方法实施例图2所述的方法。
通信装置600还可以包括至少一个存储器630，用于存储程序指令和/或数据。存储器630和处理器620耦合。本申请实施例中的耦合是装置、单元或模块之间的间接耦合或通信连接，可以是电性，机械或其它的形式，用于装置、单元或模块之间的信息交互。处理器620可能和存储器630协同操作。处理器620可能执行存储器630中存储的程序指令。所述至少一个存储器中的至少一个可以包括于处理器中。
当通信装置600开机后，处理器620可以读取存储器630中的软件程序，解释并执行软件程序的指令，处理软件程序的数据。当需要通过无线发送数据时，处理器620对待发送的数据进行基带处理后，输出基带信号至射频电路(图未示意)，射频电路将基带信号进行射频处理后将射频信号通过天线以电磁波的形式向外发送。当有数据发送到通信装置600时，射频电路通过天线接收到射频信号，将射频信号转换为基带信号，并将基带信号输出至处理器620，处理器620将基带信号转换为数据并对该数据进行处理。
在另一种实现中，所述的射频电路和天线可以独立于进行基带处理的处理器620而设置，例如在分布式场景中，射频电路和天线可以与独立于通信装置，呈拉远式的布置。
本申请实施例中不限定上述通信接口610、处理器620以及存储器630之间的具体连接介质。本申请实施例在图6中以存储器630、处理器620以及通信接口610之间通过总线640连接，总线在图6中以粗线表示，其它部件之间的连接方式，仅是进行示意性说明，并不引以为限。所述总线可以分为地址总线、数据总线、控制总线等。为便于表示，图6中仅用一条粗线表示，但并不表示仅有一根总线或一种类型的总线。
通信装置600具体是用于终端设备时，例如通信装置600具体是芯片或者芯片***时，通信接口610所输出或接收的可以是基带信号。通信装置600具体是终端设备时，通信接口610所输出或接收的可以是射频信号。
需要说明的是，该通信装置可以执行前述方法实施例中终端设备或网络设备的相关步骤，具体可参见上述各个步骤所提供的实现方式，在此不再赘述。
对于应用于或集成于通信装置的各个装置、产品，其包含的各个模块可以都采用电路等 硬件的方式实现，不同的模块可以位于终端内同一组件(例如，芯片、电路模块等)或者不同组件中，或者，至少部分模块可以采用软件程序的方式实现，该软件程序运行于终端内部集成的处理器，剩余的(如果有)部分模块可以采用电路等硬件方式实现。
上述存储器可以是易失性存储器或非易失性存储器，或可包括易失性和非易失性存储器两者。其中，非易失性存储器可以是只读存储器(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)或闪存。易失性存储器可以是随机存取存储器(random access memory，RAM)，其用作外部高速缓存。通过示例性但不是限制性说明，许多形式的随机存取存储器(random access memory，RAM)可用，例如静态随机存取存储器(static ram，SRAM)、动态随机存取存储器(dynamic random access memory，DRAM)、同步动态随机存取存储器(synchronous DRAM，SDRAM)、双倍数据速率同步动态随机存取存储器(double data rate SDRAM，DDR SDRAM)、增强型同步动态随机存取存储器(enhanced SDRAM，ESDRAM)、同步连接动态随机存取存储器(synchlink DRAM，SLDRAM)和直接内存总线随机存取存储器(direct rambus RAM，DR RAM)。
本申请实施例提供一种芯片。该芯片包括：处理器和存储器。其中，处理器的数量可以是一个或多个，存储器的数量可以是一个或多个。处理器通过读取存储器上存储的指令和数据，可执行上述图2所示的侧链路通信方法，以及相关实施方式所执行的步骤。
如图7所示，图7是本申请实施例提供的一种模组设备的结构示意图。该模组设备700可以执行前述方法实施例中终端设备或网络设备的相关步骤，该模组设备700包括：通信模组701、电源模组702、存储模组703以及芯片模组704。其中，电源模组702用于为模组设备提供电能；存储模组703用于存储数据和/或指令；通信模组701用于与外部设备进行通信；芯片模组704用于调用存储模组703存储的数据和/或指令，结合通信模组701，可执行上述如图2所示的侧链路通信方法，以及相关实施方式所执行的步骤。
本申请实施例中还提供一种计算机可读存储介质。所述计算机可读存储介质存储有计算机程序，所述计算机程序包括程序指令，当电子设备执行所述程序指令时，实现上述图2所示的侧链路通信方法中终端设备所执行的步骤、或者实现图2所示的侧链路通信方法中网络设备所执行的步骤。
所述计算机可读存储介质可以是前述任一实施例所述的终端设备或网络设备的内部存储单元，例如设备的硬盘或内存。所述计算机可读存储介质也可以是所述终端设备或网络设备 的外部存储设备，例如所述设备上配备的插接式硬盘，智能存储卡(smart media card，SMC)，安全数字(secure digital，SD)卡，闪存卡(flash card)等。进一步地，所述计算机可读存储介质还可以既包括所述终端设备或网络设备的内部存储单元也包括外部存储设备。所述计算机可读存储介质用于存储所述计算机程序以及所述终端设备或网络设备所需的其他程序和数据。所述计算机可读存储介质还可以用于暂时地存储已经输出或者将要输出的数据。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包含一个或多个可用介质集合的服务器、数据中心等数据存储设备。所述可用介质可以是磁性介质(例如，软盘、硬盘、磁带)、光介质(例如，高密度数字视频光盘(digital video disc，DVD))、或者半导体介质。半导体介质可以是固态硬盘。
关于上述实施例中描述的各个装置、产品包含的各个模块/单元，其可以是软件模块/单元，也可以是硬件模块/单元，或者也可以部分是软件模块/单元，部分是硬件模块/单元。例如，对于应用于或集成于芯片的各个装置、产品，其包含的各个模块/单元可以都采用电路等硬件的方式实现，或者，至少部分模块/单元可以采用软件程序的方式实现，该软件程序运行于芯片内部集成的处理器，剩余的(如果有)部分模块/单元可以采用电路等硬件方式实现；对于应用于或集成于芯片模组的各个装置、产品，其包含的各个模块/单元可以都采用电路等硬件的方式实现，不同的模块/单元可以位于芯片模组的同一组件(例如芯片、电路模块等)或者不同组件中，或者，至少部分模块/单元可以采用软件程序的方式实现，该软件程序运行于芯片模组内部集成的处理器，剩余的(如果有)部分模块/单元可以采用电路等硬件方式实现；对于应用于或集成于数据采集节点的各个装置、产品，其包含的各个模块/单元可以都采用电路等硬件的方式实现，不同的模块/单元可以位于终端内同一组件(例如，芯片、电路模块等)或者不同组件中，或者，至少部分模块/单元可以采用软件程序的方式实现，该软件程序运行于数据采集节点内部集成的处理器，剩余的(如果有)部分模块/单元可以采用电路等硬件方式实现。
上述实施例，可以全部或部分地通过软件、硬件、固件或其他任意组合来实现。当使用软件实现时，上述实施例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指令或计算机程序。在计算机上加载或执行所述计算机指令或计算机程序时，全部或部分地产生按照本申请实施例所述的流程或功能。所述计算机可以为通用计算机、专用计算机、计算机网络、或者其他可编程装置。所述计算机指令可以存储在计算机可读存储介质中，或者从一个计算机可读存储介质向另一个计算机可读存储介质传输，例如，所述计算机指令可以从一个网站站点、计算机、服务器或数据中心通过有线或无线方 式向另一个网站站点、计算机、服务器或数据中心进行传输。
应理解，在本申请的各种实施例中，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，而不应对本申请实施例的实施过程构成任何限定。
在本申请所提供的几个实施例中，应该理解到，所揭露的方法、装置和***，可以通过其它的方式实现。例如，以上所描述的装置实施例仅仅是示意性的；例如，所述单元的划分，仅仅为一种逻辑功能划分，实际实现时可以有另外的划分方式；例如多个单元或组件可以结合或者可以集成到另一个***，或一些特征可以忽略，或不执行。另一点，所显示或讨论的相互之间的耦合或直接耦合或通信连接可以是通过一些接口，装置或单元的间接耦合或通信连接，可以是电性，机械或其它的形式。
所述作为分离部件说明的单元可以是或者也可以不是物理上分开的，作为单元显示的部件可以是或者也可以不是物理单元，即可以位于一个地方，或者也可以分布到多个网络单元上。可以根据实际的需要选择其中的部分或者全部单元来实现本实施例方案的目的。
另外，在本发明各个实施例中的各功能单元可以集成在一个处理单元中，也可以是各个单元单独物理包括，也可以两个或两个以上单元集成在一个单元中。上述集成的单元既可以采用硬件的形式实现，也可以采用硬件加软件功能单元的形式实现。
上述以软件功能单元的形式实现的集成的单元，可以存储在一个计算机可读取存储介质中。上述软件功能单元存储在一个存储介质中，包括若干指令用以使得一台计算机设备(可以是个人计算机，服务器，或者网关节点等)执行本发明各个实施例所述方法的部分步骤。
本领域普通技术人员可以理解实现上述实施例方法中的全部或部分流程，是可以通过计算机程序来指令相关的硬件来完成，所述的程序可存储于一计算机可读取存储介质中，该程序在执行时，可包括如上述各方法的实施例的流程。其中，所述的存储介质可为磁碟、光盘、只读存储记忆体(Read-Only Memory，ROM)或随机存储记忆体(Random Access Memory，RAM)等。
以上所揭露的仅为本申请一种较佳实施例而已，当然不能以此来限定本申请之权利范围，本领域普通技术人员可以理解实现上述实施例的全部或部分流程，并依本申请权利要求所作的等同变化，仍属于申请所涵盖的范围。

Claims (24)

  1. 一种侧链路通信方法，其特征在于，包括：
    向网络设备发送指示信息，所述指示信息用于指示需要发送侧链路信道状态信息SL CSI的一个或多个载波；
    接收所述网络设备发送的第一资源分配信息，所述第一资源分配信息用于指示在所述载波上分配的侧链路传输资源；
    在所述侧链路传输资源上发送所述SL CSI。
  2. 如权利要求1所述的方法，其特征在于，所述指示信息携带于第一调度请求SR中，所述第一SR用于请求网络设备分配传输SL CSI的侧链路传输资源。
  3. 如权利要求2所述的方法，其特征在于，所述指示信息包括所述第一SR中的N个比特，所述N为大于或者等于2的整数。
  4. 如权利要求3所述的方法，其特征在于，所述N的取值是根据所述终端设备进行侧链路通信的载波数量确定，所述终端设备进行侧链路通信的载波包括所述存在待发送的SL CSI的载波。
  5. 如权利要求4所述的方法，所述N个比特所表示的数值与所指示的载波之间存在对应关系；
    其中，所述N个比特所表示的数值越大，则所述N个比特所指示的载波越大，或者，所述对应关系是由所述网络设备配置的。
  6. 如权利要求2-5任一项所述的方法，其特征在于，所述第一SR与混合自动重传请求HARQ反馈信息复用在第一上行传输资源上传输，所述第一上行传输资源是为所述HARQ反馈信息分配的传输资源。
  7. 如权利要求2-5任一项所述的方法，其特征在于，所述第一SR与下行信道的CSI复用在第二上行传输资源上传输，所述第二上行传输资源是为所述下行信道的CSI分配的传输资源。
  8. 如权利要求1所述的方法，其特征在于，所述指示信息携带于数据缓存状态报告BSR中。
  9. 如权利要求8所述的方法，其特征在于，所述指示信息包括所述BSR中的M个比特，所述M为大于或者等于1的整数。
  10. 如权利要求9所述的方法，其特征在于，所述M个比特中各个比特分别用于指示在不同的载波上是否存在待发送的SL CSI。
  11. 如权利要求8-10任一项所述的方法，其特征在于，所述方法还包括：
    向所述网络设备发送第二SR，所述第二SR用于请求网络设备分配上行传输资源；
    接收所述网络设备发送的第二资源分配信息，所述第二资源分配信息用于指示第三上行传输资源；
    所述向网络设备发送指示信息，包括：
    在所述第三上行传输资源上向所述网络设备发送携带所述指示信息的BSR。
  12. 一种侧链路通信方法，其特征在于，包括：
    接收终端设备发送的指示信息，所述指示信息用于指示需要发送侧链路信道状态信息SL CSI的一个或多个载波；
    响应于所述指示信息，向所述终端设备发送第一资源分配信息，所述第一资源分配信息用于指示在所述载波上分配的侧链路传输资源。
  13. 如权利要求12所述的方法，其特征在于，所述指示信息携带于第一调度请求SR中，所述第一SR用于请求网络设备分配传输SL CSI的侧链路传输资源。
  14. 如权利要求13所述的方法，其特征在于，所述指示信息包括所述第一SR中的N个比特，所述N为大于或者等于2的整数。
  15. 如权利要求14所述的方法，其特征在于，所述N的取值是根据所述终端设备进行侧链路通信的载波数量确定，所述终端设备进行侧链路通信的载波包括所述存在待发送的SL CSI的载波。
  16. 如权利要求15所述的方法，其特征在于，所述N个比特所表示的数值与所指示的载波之间存在对应关系；
    其中，所述N个比特所表示的数值越大，则所述N个比特所指示的载波越大，或者，所述对应关系是由所述网络设备配置的。
  17. 如权利要求13-16任一项所述的方法，其特征在于，所述第一SR与混合自动重传请求HARQ反馈信息复用在第一上行传输资源上传输，所述第一上行传输资源是为所述HARQ反馈信息分配的传输资源。
  18. 如权利要求13-16任一项所述的方法，其特征在于，所述第一SR与下行信道的CSI复用在第二上行传输资源上传输，所述第二上行传输资源是为所述下行信道的CSI分配的传输资源。
  19. 如权利要求12所述的方法，其特征在于，所述指示信息携带于数据缓存状态报告BSR中。
  20. 如权利要求19所述的方法，其特征在于，所述指示信息包括所述BSR中的M个比特，所述M为大于或者等于1的整数。
  21. 如权利要求20所述的方法，其特征在于，所述M个比特中各个比特分别用于指示在不同的载波上是否存在待发送的SL CSI。
  22. 如权利要求19-21任一项所述的方法，其特征在于，所述方法还包括：
    接收所述终端设备发送的第二SR，所述第二SR用于请求网络设备分配上行传输资源；
    响应于所述第二SR，向所述终端设备发送第二资源分配信息，所述第二资源分配信息用于指示第三上行传输资源；
    所述接收终端设备发送的指示信息，包括：
    在所述第三上行传输资源上接收所述终端设备发送的携带所述指示信息的BSR。
  23. 一种通信装置，其特征在于，包括：
    发送单元，用于向网络设备发送指示信息，所述指示信息用于指示需要发送侧链路信道状态信息SL CSI的一个或多个载波；
    接收单元，用于接收所述网络设备发送的第一资源分配信息，所述第一资源分配信息用于指示在所述载波上分配的侧链路传输资源；
    所述发送单元，还用于在所述侧链路传输资源上发送所述SL CSI。
  24. 一种通信装置，其特征在于，包括：
    接收单元，用于接收终端设备发送的指示信息，所述指示信息用于指示需要发送侧链路信道状态信息SL CSI的一个或多个载波；
    发送单元，用于响应于所述指示信息，向所述终端设备发送第一资源分配信息，所述第一资源分配信息用于指示在所述载波上分配的侧链路传输资源。
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