WO2023160337A1 - 通信方法和装置 - Google Patents

通信方法和装置 Download PDF

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Publication number
WO2023160337A1
WO2023160337A1 PCT/CN2023/073938 CN2023073938W WO2023160337A1 WO 2023160337 A1 WO2023160337 A1 WO 2023160337A1 CN 2023073938 W CN2023073938 W CN 2023073938W WO 2023160337 A1 WO2023160337 A1 WO 2023160337A1
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WO
WIPO (PCT)
Prior art keywords
information
terminal device
data
resource
access network
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PCT/CN2023/073938
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English (en)
French (fr)
Inventor
彭文杰
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华为技术有限公司
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Publication of WO2023160337A1 publication Critical patent/WO2023160337A1/zh

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Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W72/00Local resource management
    • H04W72/04Wireless resource allocation
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W72/00Local resource management
    • H04W72/20Control channels or signalling for resource management
    • H04W72/21Control channels or signalling for resource management in the uplink direction of a wireless link, i.e. towards the network
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W72/00Local resource management
    • H04W72/20Control channels or signalling for resource management
    • H04W72/25Control channels or signalling for resource management between terminals via a wireless link, e.g. sidelink

Definitions

  • the present application relates to the communication field, and more specifically, to a communication method and device.
  • terminal equipment In a wireless communication system, terminal equipment (user equipment, UE) may communicate through a network device, or directly communicate without passing through a network device.
  • UE user equipment
  • the communication directly performed between UEs is widely referred to as sidelink (slidelink, SL) communication.
  • SL sidelink
  • the manners for the UE to obtain SL communication resources include: an evolved base station (evolved NodeB, eNB or eNodeB) scheduling manner in a wireless communication system and a UE self-selecting manner.
  • eNB evolved NodeB
  • eNodeB evolved NodeB
  • the embodiment of the present application provides a communication method.
  • the Relay UE Before receiving data from the Remote UE, the Relay UE requests the access network device for resources used to transmit the data in advance, which can reduce the delay of the Remote UE's uplink data transmission.
  • a communication method is provided, and the method may be performed by a second terminal device (such as a Relay UE), or may also be performed by a component (such as a chip or a circuit) of the second terminal device, and no further description is made on this
  • a second terminal device such as a Relay UE
  • a component such as a chip or a circuit
  • the communication method includes: receiving first information from a first terminal device; determining first cache information of first data according to the first information, where the first cache information is used to indicate the size of the first data; Before the first data of the first terminal device, send a first request message to the access network device, the first request information includes the first cache information, and the first request information is used to request the first resource, wherein,
  • the first data includes data to be sent by the first terminal device to the access network device through the second terminal device, the first terminal device includes a terminal device that accesses the access network device through the second terminal device, the The first resources include resources used by the second terminal device to send the first data to the access network device.
  • the second terminal device before the second terminal device receives the first data from the first terminal device, it requests the resource for transmitting the first data from the access network device instead of after receiving the first data before requesting the first resource.
  • the resource for transmitting the data from the access network device in advance, the time delay for the first terminal device to send uplink data transmission to the access network device through the second terminal device can be reduced.
  • this communication method can be applied in the scenario of Sidelink UE-to-Network Relay, and can reduce the delay of Remote UE uplink data transmission.
  • the first data can be understood as PDCP PDU, including but not limited to: PDCP PDU of DRB or PDCP PDU of SRB.
  • the first resource may be understood as an uplink (uplink, UL) resource used to transmit the first data.
  • the arrival time of the first data may be determined through the first information, so as to realize sending the first request information to the access network device before receiving the first data.
  • the first information can be used to determine that the time when the first data is received is time x, and then send the first request information to the access network device before time x.
  • the time may be a certain subframe, a certain frame, a certain time slot or a certain symbol.
  • the present application does not limit the expression form of the time, and any identifier that can identify a certain time point in the time domain may be used.
  • the first information includes first sidelink SL resource information used by the first terminal device to send the first data to the second terminal device.
  • the above-mentioned first information can be the first SL resource information, and currently in SL communication, the first terminal device can send SL resource information to the second terminal device, that is to say, it can be multiplexed in this application
  • the existing SL resource information between the first terminal device and the second terminal device achieves the purpose of determining the first cached information without adding new signaling.
  • the size of the first data is determined indirectly according to the size of the SL resource indicated by the first SL resource information.
  • the method further includes: determining first time information according to the first SL resource information, where the first time information is used to indicate that the first terminal device receives the The moment of the first data or the moment of sending the first data.
  • the second terminal device after receiving the first SL resource information, can estimate the time when the first data is received or the time when the first data is sent, so that the arrival time and/or sending time of the first data can be determined .
  • the time domain position of the SL resource indicated by the first SL resource information indirectly determines the time when the first data arrives, or further estimates the time when the first data is sent according to the first data arrival time and local processing time.
  • the first SL resource information includes SL resource information of retransmitted data and/or reserved SL resource information for newly transmitted data.
  • the above-mentioned first SL resource information may be an SL resource indicating retransmission data and/or a reserved SL resource for new data transmission, that is to say, the first data may be retransmitted data or newly transmitted data , which is not limited in this application, to improve the flexibility of the solution.
  • the first information includes second cache information of the first data, and the second cache information is used to indicate the first logical channel corresponding to the first data Group cache information, wherein the first logical channel group is a logical channel group between the first terminal device and the second terminal device.
  • the above-mentioned first information may be second cache information that explicitly indicates the first data. Since the second cached information is sent from the first terminal device to the second terminal device, the second cached information is embodied through the first logical channel group between the first terminal device and the second terminal device.
  • the first information may be newly added information sent by the first terminal device to the second terminal device, that is to say, it is not limited that the first information must be existing information, so as to improve the flexibility of the solution.
  • the determining the first cache information of the first data according to the first information includes: determining the first data according to the second cache information and the first correspondence The corresponding second logic The first cached information of the channel group, wherein the first correspondence is the correspondence between the first logical channel group and the second logical channel group, and the second logical channel group is the first terminal device and the access network Group of logical channels between devices.
  • the second terminal device after receiving the second cached information indicating the first data, can convert the second cached information into the first cached information that can be recognized by the access network device, so as to implement The access network device indicates the size of the first data.
  • the first information further includes second time information, and the second time information is used to indicate to the second terminal device that the second terminal device receives the The moment of the first data or the moment of sending the first data.
  • the above-mentioned first information may be second time information that explicitly indicates the first data. Since the second time information is sent from the first terminal device to the second terminal device, the second time information is determined by timing information between the first terminal device and the second terminal device.
  • the time information included in the first information may be newly added information sent by the first terminal device to the second terminal device, that is to say, the first information must not be limited to existing information, so as to improve the flexibility of the solution.
  • the method further includes: determining first time information according to the second time information and the second correspondence, where the first time information is used to send the access network The device indicates the moment when the first terminal device receives the first data or sends the first data, wherein the second correspondence is a correspondence between the first timing information and the second timing information, and the first The timing information is the timing information of the first communication interface between the first terminal device and the second terminal device, and the second timing information is the timing information of the second communication interface between the first terminal device and the access network device. timing information.
  • the second terminal device after receiving the second time information indicating the first data, can convert the second time information into the first time information that can be recognized by the access network device, so as to provide The access network device indicates the time when the first terminal device receives the first data or the time when the first data is sent.
  • the first information is included in sidelink control information SCI.
  • the first information may be carried in currently existing information (eg, SCI), so as to achieve the purpose of saving signaling overhead.
  • SCI currently existing information
  • the first request information further includes the first time information.
  • the second terminal device may include the first time information indicating the moment when the first terminal device receives the first data or sends the first data in the first request information, so as to facilitate access
  • the network device considers the receiving or sending time of the first data when scheduling resources.
  • the method further includes: receiving configuration information from the access network device, where the configuration information is used to indicate that the first request information has been sent for at least one terminal device capability, the at least one terminal device includes the first terminal device.
  • the access network device may indicate through configuration information that the second terminal device is capable of requesting uplink resources in advance for which terminal devices.
  • the method further includes: receiving first downlink control information DCI from the access network device, where the first DCI is used to indicate the first resource.
  • the first DCI includes first indication information, and the The first indication information is used to indicate that the first resource is used to transmit uplink data of the first terminal device.
  • the access network device may use the first indication information to indicate the interruption device for which the scheduled resource is targeted, so as to specify the use of the resource.
  • a communication method is provided, and the method may be performed by a first terminal device (such as a Remote UE), or may also be performed by a component (such as a chip or a circuit) of the first terminal device, and no further description is made here.
  • a first terminal device such as a Remote UE
  • a component such as a chip or a circuit
  • execution by the first terminal device may be used as an example for description.
  • the communication method includes: determining first information according to the first data to be sent to the access network device through the second terminal device, the first information is used to determine first cache information, and the first cache information is used to indicate that the first The size of the data; sending the first information to the second terminal device.
  • the first information includes first sidelink SL resource information used by the first terminal device to send the first data to the second terminal device.
  • the first SL resource information includes SL resource information of retransmitted data and/or reserved SL resource information for newly transmitted data.
  • the first information includes second cache information of the first data, and the second cache information is used to indicate the first logical channel corresponding to the first data Group cache information, wherein the first logical channel group is a logical channel group between the first terminal device and the second terminal device.
  • the first information further includes second time information, and the second time information is used to indicate to the second terminal device that the second terminal device receives the The moment of the first data or the moment of sending the first data.
  • the first information is included in sidelink control information SCI.
  • a communication method is provided, and the method may be performed by an access network device (such as a Relay UE), or may also be performed by a component (such as a chip or a circuit) of the access network device, and no further description is made on this
  • an access network device such as a Relay UE
  • a component such as a chip or a circuit
  • the communication method includes: receiving first request information from a second terminal device, the first request information includes first cache information, the first request information is used to request a first resource, and the first cache information is used to indicate the first A data size; sending first downlink control information DCI to the second terminal device, where the first DCI is used to indicate the first resource, where the first data includes the first terminal device to pass through the second terminal device
  • the first terminal device includes a terminal device that accesses the access network device through the second terminal device, and the first resource includes the data sent by the second terminal device to the access network device The resources used by the first data.
  • the first request information further includes first time information, and the first time information is used to indicate the time when the first terminal device receives the first data Or the moment when the first data is sent.
  • the first DCI includes first indication information, where the first indication information is used to indicate that the first resource is used to transmit uplink data of the first terminal device .
  • the above-mentioned first to third aspects respectively introduce how to request resources for transmitting uplink data of the first terminal device in advance from the perspectives of the second terminal device, the first terminal device and the access network device, so as to reduce the first A communication method for delaying the uplink data transmission of the terminal equipment.
  • This application also provides another communication method that can reduce the delay of the uplink data transmission of the first terminal device. By jointly scheduling SL resources and uplink resources, it is avoided that the second terminal device receives the uplink data transmission delay of the first terminal device. Resources are requested after the data, so as to reduce the time delay of uplink data transmission of the first terminal device.
  • a communication method is provided, and the method may be performed by a second terminal device (such as a Relay UE), or may also be performed by a component (such as a chip or a circuit) of the second terminal device, and no further description is made for this.
  • a second terminal device such as a Relay UE
  • a component such as a chip or a circuit
  • execution by the second terminal device may be used as an example for description.
  • the communication method includes: receiving resource indication information, where the resource indication information is used to indicate a second resource; using the second resource to send third data to an access network device, wherein the third data includes the first terminal device to pass through the second resource;
  • the data sent by the second terminal device to the access network device, the first terminal device includes a terminal device that accesses the access network device through the second terminal device, and the second resource is related to the second side link SL resource
  • the second SL resource is a resource used by the first terminal device to send the third data to the second terminal device.
  • the second resource corresponds to the second SL resource, that is to say, the second resource and the second SL resource are jointly scheduled.
  • the second terminal device may, upon receiving third data from the first terminal device via the second SL resource, forward the third data via the second resource without requesting for transmission of the third data after receiving the third data
  • the uplink resource of three data can reduce the time delay for the first terminal device to send uplink data transmission to the access network device through the second terminal device.
  • the third data is data sent by the first terminal device to the second terminal device by using the second sidelink SL resource.
  • the receiving resource indication information includes: before receiving the third data from the first terminal device, receiving the second data from the access network device Downlink control information DCI, where the second DCI is used to indicate the second resource and the second SL resource.
  • the second terminal device may receive the DCI of jointly scheduling the second resource and the second SL resource from the access network device, so as to achieve the purpose of learning the second resource.
  • the method further includes: the first terminal device receiving a first identifier from the access network device, where the first identifier is used to receive the second DCI.
  • the method further includes: determining, according to the second DCI, to use the second resource to send the third data received from the second SL resource.
  • the receiving the second resource indication information includes: receiving a first message from the first terminal device, the first message including the third data and the Resource indication information.
  • the second terminal device may receive resource indication information from the first terminal device, so as to obtain the second resource.
  • the method further includes: determining to use the second resource to send the third data according to the third data and the resource indication information.
  • the method before using the second resource to send the third data to the access network device, the method further includes: obtaining the third data from the second SL resource by parsing Data, determine the logical channel corresponding to the third data; when performing the logical channel priority LCP process on the second resource, set the priority of the logical channel corresponding to the third data to the highest priority, wherein the third The logical channel corresponding to the data is a logical channel between the second terminal device and the access network device.
  • the second terminal device may ensure that the third data is sent on the second resource by setting the priority of the logical channel corresponding to the third data to the highest priority.
  • a communication method is provided, and the method may be executed by a first terminal device (such as a Remote UE), or may also be executed by a component (such as a chip or a circuit) of the first terminal device, and no further description is made here.
  • a first terminal device such as a Remote UE
  • a component such as a chip or a circuit
  • execution by the first terminal device may be used as an example for description.
  • the communication method includes: receiving second downlink control information DCI from an access network device, where the second DCI is used to indicate a second resource and a second side link SL resource; using the second SL resource to send a message to the first terminal device sending third data, where the third data includes data to be sent by the first terminal device to the access network device through the second terminal device, and the first terminal device includes accessing the access network device through the second terminal device.
  • the terminal device, the second resource corresponds to the second side link SL resource, and the second resource is the resource used by the second terminal device to send the third data to the access network device.
  • the third data is data sent by the first terminal device to the second terminal device by using the second sidelink SL resource.
  • the method further includes: the second terminal device sending resource indication information to the first terminal device, where the resource indication information is used to indicate the second resource.
  • the method further includes: the second terminal device receiving a first identifier from the access network device, where the first identifier is used to receive the second DCI.
  • a communication method is provided, and the method may be performed by an access network device (such as a Relay UE), or may also be performed by a component (such as a chip or a circuit) of the access network device, and no further description is made on this
  • an access network device such as a Relay UE
  • a component such as a chip or a circuit
  • the communication method includes: determining a second resource and a second side link SL resource, the second resource corresponds to the second SL resource, and the second resource is for the second terminal device to send third data to the access network device
  • the resource used, the second SL resource is the resource used by the first terminal device to send the third data to the second terminal device; the second downlink control information DCI is sent to the first terminal device, and the second DCI is used to indicate
  • the first terminal device is a terminal device that accesses the access network device through the second terminal device.
  • the method further includes: sending a first identifier to the first terminal device, where the first identifier is used to receive the second DCI.
  • the method further includes: sending a first identifier to the second terminal device, where the first identifier is used to receive the second DCI.
  • the method further includes: sending the second DCI to the second terminal device.
  • a communication device is provided, and the device is used to execute the method provided in the first aspect or the fourth aspect.
  • the communication may include a unit and/or module for executing the method provided by any of the above-mentioned implementation manners of the first aspect or the fourth aspect, such as a processing unit and an obtaining unit.
  • the acquisition unit may be a transceiver, or an input/output interface; the processing unit may be at least one processor.
  • the transceiver may be a transceiver circuit.
  • the input/output interface may be an input/output circuit.
  • the acquisition unit may be an input/output interface, interface circuit, output circuit, input circuit, pin or related circuit on the chip, chip system or circuit;
  • the processing unit may be at least one processor , processing circuits or logic circuits, etc.
  • a communication device in an eighth aspect, includes: at least one processor coupled with at least one memory. At least one memory is used to store computer programs or instructions, and at least one processor is used to call and run the computer programs or instructions from the at least one memory, so that the communication device executes the method in any possible implementation manner of the first aspect or the fourth aspect .
  • the apparatus is a second terminal device.
  • the apparatus is a chip, a chip system, or a circuit in the second terminal device.
  • a communication device is provided, and the device is used to execute the method provided in the second aspect or the fifth aspect.
  • the communication device may include a unit and/or module for executing the method provided by any of the above-mentioned implementation manners of the second aspect or the fifth aspect, such as a processing unit and an acquiring unit.
  • the acquisition unit may be a transceiver, or an input/output interface; the processing unit may be at least one processor.
  • the transceiver may be a transceiver circuit.
  • the input/output interface may be an input/output circuit.
  • the acquisition unit may be an input/output interface, interface circuit, output circuit, input circuit, pin or related circuit on the chip, chip system or circuit;
  • the processing unit may be at least one processor , processing circuits or logic circuits, etc.
  • a communication device in a tenth aspect, includes: at least one processor coupled with at least one memory. At least one memory is used to store computer programs or instructions, and at least one processor is used to call and run the computer programs or instructions from the at least one memory, so that the communication device executes the method in any possible implementation manner of the second aspect or the fifth aspect .
  • the apparatus is a first terminal device. In another implementation manner, the apparatus is a chip, a chip system, or a circuit in the first terminal device.
  • a communication device is provided, and the device is used to execute the method provided in the third aspect or the sixth aspect.
  • the communication device may include a unit and/or module for executing the method provided by any of the above-mentioned implementation manners of the third aspect or the sixth aspect, such as a processing unit and an acquiring unit.
  • the acquisition unit may be a transceiver, or an input/output interface; the processing unit may be at least one processor.
  • the transceiver may be a transceiver circuit.
  • the input/output interface may be an input/output circuit.
  • the acquisition unit may be an input/output interface, interface circuit, output circuit, input circuit, pin or related circuit on the chip, chip system or circuit;
  • the processing unit may be at least one processor , processing circuits or logic circuits, etc.
  • a communication device in a twelfth aspect, includes: at least one processor coupled with at least one memory. At least one memory is used to store computer programs or instructions, and at least one processor is used to call and run the computer programs or instructions from the at least one memory, so that the communication device executes the method in any possible implementation manner of the third aspect or the sixth aspect .
  • the apparatus is an access network device. In another implementation manner, the apparatus is a chip, a chip system or a circuit in an access network device.
  • a computer-readable storage medium stores program code for execution by a device, and the program code includes any one of the above-mentioned implementations for executing the above-mentioned first aspect to the sixth aspect method provided.
  • a computer program product containing instructions is provided, and when the computer program product is run on a computer, it causes the computer to execute the method provided by any one of the above-mentioned implementation manners of the first aspect to the sixth aspect.
  • a fifteenth aspect provides a chip, the chip includes a processor and a communication interface, the processor reads the instructions stored in the memory through the communication interface, and executes the method provided by any one of the above-mentioned implementations of the first aspect to the sixth aspect .
  • the chip further includes a memory, in which computer programs or instructions are stored, and the processor is used to execute the computer programs or instructions stored in the memory, and when the computer programs or instructions are executed, the processor is used to execute The method provided by the above-mentioned first aspect or any one of the above-mentioned implementation manners of the first aspect.
  • a sixteenth aspect provides a communication system, including the device provided in the seventh aspect, the device provided in the ninth aspect, and the device provided in the eleventh aspect.
  • FIG. 1 are schematic diagrams of a communication system applicable to an embodiment of the present application.
  • FIG. 2 are schematic diagrams of the protocol stack provided by the embodiment of the present application.
  • Fig. 3 is a schematic flowchart of a communication method provided by an embodiment of the present application.
  • Fig. 4 is a schematic diagram of a time indicated by first time information and a time domain position of a resource indicated by the first information provided by an embodiment of the present application.
  • Fig. 5 is a schematic flowchart of another communication method provided by an embodiment of the present application.
  • FIG. 6 is a schematic block diagram of an apparatus 600 provided by an embodiment of the present application.
  • FIG. 7 is a schematic block diagram of an apparatus 700 provided by an embodiment of the present application.
  • the technical solution of the embodiment of the present application can be applied to a remote terminal equipment (Remote UE) accessing a network (such as (wireless) access network equipment (radio access network, (R)AN)) through a relay terminal (Relay UE) communication system, wherein the way the Relay UE accesses the network can be current or future communication methods, including but not limited to:
  • LTE Long Term Evolution
  • FDD Frequency Division Duplex
  • TDD LTE Time Division Duplex
  • UMTS Universal Mobile Telecommunications System
  • WiMAX Worldwide Interoperability for Microwave Access
  • 5G fifth generation
  • 5G new Radio
  • NR new Radio
  • FIG. 1 are schematic diagrams of a communication system applicable to an embodiment of the present application.
  • the Remote UE accesses the network through the Relay UE in two ways: a single-path way and a dual-path way.
  • FIG. 1 shows a single-path way
  • FIG. 1 Shown is the dual path approach.
  • the single path mode is: the Remote UE passes through the Relay UE and the access network device through an indirect (indirect) path (based on the communication interface shown in (a) in Figure 1 #1 communicates with the path #1) of the communication interface #2.
  • the dual path mode is: there are two paths between the Remote UE and the access network device, one is the indirect path through the Relay UE (as shown in (b) in Figure 1 The path #1 based on communication interface #1 and communication interface #2), one is a direct (direct) path between the Remote UE and the access network device (based on the communication interface as shown in (b) in Figure 1 #2's path #2).
  • the communication interface #1 can be understood as the PC5 interface between UEs
  • the communication interface #2 can be understood as the Uu interface between the UE and the access network device. It should be noted that the PC5 interface and the Uu interface are just examples. The protection scope of the application does not constitute any limitation, and the communication interface may also have other names, which will not be repeated here.
  • the access network device can schedule Sidelink resources for the Remote UE through path #2, and the Sidelink resources are used for the Remote UE to send uplink data to the Relay UE .
  • the terminal equipment (such as the above-mentioned Remote UE and Relay UE) in the embodiment of the present application may refer to an access terminal, a subscriber unit, a subscriber station, a mobile station, a mobile station, a relay station, a remote station, a remote terminal, a mobile device, a user terminal ( user terminal), user equipment, terminal (terminal), wireless communication device, user agent, or user device.
  • the terminal device can also be a cellular phone, a cordless phone, a session initiation protocol (SIP) phone, a wireless local loop (WLL) station, a personal digital assistant (PDA), a Functional handheld devices, computing devices or other processing devices connected to wireless modems, vehicle-mounted devices, wearable devices, terminal devices in 5G networks or terminals in the future evolution of public land mobile network (PLMN) Devices or terminal devices in the future Internet of Vehicles are not limited in this embodiment of the present application.
  • SIP session initiation protocol
  • WLL wireless local loop
  • PDA personal digital assistant
  • wearable devices can also be referred to as wearable smart devices, which is a general term for intelligently designing daily wear and developing wearable devices by applying wearable technology, such as glasses, Gloves, watches, clothing and shoes, etc.
  • a wearable device is a portable device that is worn directly on the body or integrated into the user's clothing or accessories. Wearable devices are not only a hardware device, but also achieve powerful functions through software support, data interaction, and cloud interaction.
  • Generalized wearable smart devices include full-featured, large-sized, complete or partial functions without relying on smart phones, such as smart watches or smart glasses, etc., and only focus on a certain type of application functions, and need to cooperate with other devices such as smart phones Use, such as various smart bracelets and smart jewelry for physical sign monitoring.
  • the terminal device can also be the terminal device in the IoT system.
  • IoT is an important part of the development of information technology in the future. Its main technical feature is to connect items to the network through communication technology, so as to realize Interconnection, an intelligent network that interconnects things.
  • the IOT technology can achieve massive connections, deep coverage, and terminal power saving through, for example, narrow band (NB) technology.
  • NB narrow band
  • the terminal equipment may also include sensors such as smart printers, train detectors, and gas stations, and its main functions include collecting data (part of the terminal equipment), receiving control information and downlink data from network equipment, and sending electromagnetic waves , to transmit uplink data to the network device.
  • sensors such as smart printers, train detectors, and gas stations
  • its main functions include collecting data (part of the terminal equipment), receiving control information and downlink data from network equipment, and sending electromagnetic waves , to transmit uplink data to the network device.
  • the access network device in the embodiment of the present application may be any communication device with a wireless transceiver function for communicating with a terminal device.
  • the device includes but is not limited to: evolved Node B (evolved Node B, eNB), radio network controller (radio network controller, RNC), Node B (Node B, NB), home base station (home evolved NodeB, HeNB, or home Node B, HNB), baseband unit (baseBand unit, BBU), access point (access point, AP) in wireless fidelity (wireless fidelity, WIFI) system, wireless relay node, wireless backhaul node, transmission point (transmission point, TP) or transmission and reception point (transmission and reception point, TRP), etc., can also be a 5G system, such as gNB in the NR system, or a transmission point (TRP or TP), etc.
  • Access 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 aircraft, balloons and satellites in the air. In the embodiment of the present application, the scenarios where the access network device and the terminal device are located are not limited.
  • the terminal device or the access network device includes a hardware layer, an operating system layer running on the hardware layer, and an application layer running on the operating system layer.
  • the hardware layer includes hardware such as a central processing unit (CPU), a memory management unit (MMU), and memory (also called main memory).
  • the operating system may be any one or more computer operating systems that implement business processing through processes, for example, Linux operating system, Unix operating system, Android operating system, iOS operating system, or windows operating system.
  • the application layer includes applications such as browsers, address books, word processing software, and instant messaging software.
  • various aspects or features of the present application may be implemented as a method, apparatus, or article of manufacture using standard programming and/or engineering techniques.
  • article of manufacture covers a computer program accessible from any computer readable device, carrier or media.
  • computer-readable media may include, but are not limited to, magnetic storage devices (e.g., hard disks, floppy disks, or tapes, etc.), optical disks (e.g., compact discs (compact discs, CDs), digital versatile discs (digital versatile discs, DVDs) etc.), smart cards and flash memory devices (eg, erasable programmable read-only memory (EPROM), card, stick or key drives, etc.).
  • various storage media described herein can represent one or more devices and/or other machine-readable media for storing information.
  • the term "machine-readable storage medium” may include, but is not limited to, wireless channels and various other medium.
  • FIG. 1 is only simplified schematic diagrams for easy understanding.
  • the communication system may also include other access network devices or other terminal devices. (a in FIG. 1 ) and (b) are not drawn.
  • the communication system shown in (a) and (b) in Figure 1 may also include core network equipment for managing terminal equipment, data transmission, and access network equipment configuration, such as including access and mobility management Function (access and mobility management function, AMF) network element, session management function (session management function, SMF) network element, user plane function (user plane function, UPF) network element, policy control function (policy control function, PCF) network element yuan and so on.
  • AMF access and mobility management Function
  • SMF session management function
  • UPF user plane function
  • policy control function policy control function
  • PCF policy control function
  • the Relay UE shown in (a) and (b) in Figure 1 can provide relay services for multiple Remote UEs at the same time (for example, the Relay UE in (a) in Figure 1 can be In addition to providing relay services, the Remote UE shown in (a) can also provide relay services for other Remote UEs, and the way other Remote UEs access the network through the Relay UE can be single-path or multi-path ).
  • the Remote UE shown in (a) and (b) in Figure 1 can access the network through a multi-hop path (such as, the Remote UE in (a) in Figure 1 can pass through multiple Relay UEs (such as, Relay UE#1 and Relay UE#2) access the network, Remote UE and Relay UE#1 are connected through communication interface #1, Relay UE#1 and Relay UE#2 are connected through communication interface #1, Relay UE#2 Connect with the access network device through the communication interface #2).
  • a multi-hop path such as, the Remote UE in (a) in Figure 1 can pass through multiple Relay UEs (such as, Relay UE#1 and Relay UE#2) access the network
  • Remote UE and Relay UE#1 are connected through communication interface #1
  • Relay UE#1 and Relay UE#2 are connected through communication interface #1
  • Relay UE#2 Connect with the access network device through the communication interface #2).
  • PC5 interface In a wireless communication system, data communication between UEs can be performed through the network, or communication between UEs can be directly performed without going through network equipment.
  • the interface between UEs is called PC5 interface, which is similar to the Uu interface between UEs and access network equipment.
  • the link between UE and UE is called sidelink (slidelink, SL).
  • sidelink Slidelink, SL.
  • a typical application scenario of sidelink communication is vehicle to everything (V2X). In V2X, each vehicle is a UE, and the sidelink communication between UEs can be directly performed through the PC5 interface without going through the network, which can effectively reduce the communication delay.
  • the PC5 interface can support communication modes such as broadcast, unicast, and multicast. This application mainly involves the unicast communication mode, and the unicast communication is briefly introduced below.
  • Unicast communication is similar to data communication after a radio resource control (RRC) connection is established between a UE and an access network device, and a unicast connection needs to be established between two UEs first. After the unicast connection is established, the two UEs can perform data communication based on the negotiated identity, and the data can be encrypted or unencrypted. Compared with broadcasting, in unicast communication, the unicast communication can only be performed between two UEs that have established a unicast connection.
  • RRC radio resource control
  • the UE In unicast communication, when the UE sends data, it sends a source identifier and a destination identifier along with the data.
  • the source identifier is assigned by the originating UE itself
  • the destination identifier is an identifier assigned by the peer UE for the unicast connection.
  • Sidelink UE-to-Network Relay scenario With the help of sidelink unicast communication, it is proposed that one UE accesses the network through another UE, so as to achieve network coverage enhancement, that is, Sidelink UE-to-Network Relay Network Relay technology.
  • the intermediate node performing the relay function is a relay UE, which may be called a Relay UE; the node accessing the network through the Relay UE is a remote UE, which may be called a Remote UE.
  • Relay UE and Remote UE are only for distinguishing, and they can also be called the first device and the second device; or they can also be called the first device.
  • the Relay UE is connected to the Remote UE through the PC5 interface, and the Relay UE is connected to the access network device through the Uu interface.
  • the Remote UE can communicate with the access network through the Relay UE.
  • the device establishes a connection for data transfer.
  • the following takes L2 sidelink relay as an example to introduce the protocol stack of the user plane and the protocol stack of the control plane during data transmission.
  • Sidelink UE-to-Network Relay may also be referred to as Sidelink U2N relay for short.
  • Protocol stack For ease of understanding, combine (a) and (b) in Figure 2 to illustrate the protocol stack of the user plane and the protocol stack of the control plane when the Remote UE can establish a connection with the access network device through the Relay UE for data transmission .
  • (a) and (b) in Fig. 2 are schematic diagrams of the protocol stack provided by the embodiment of the present application, specifically, (a) in Fig. 2 shows the protocol stack of the user plane; (b) in Fig. 2 Shown is the protocol stack of the control plane.
  • Physical (physical, PHY) layer such as, PC5-PHY and Uu-PHY shown in (a) among Fig. 2), medium access control (media access control, MAC) layer (such as, among Fig. 2 ( PC5-MAC and Uu-MAC shown in a), radio link control (radio link control, RLC) layer (such as, PC5-RLC and Uu-RLC shown in (a) in Figure 2), Adaptation (adapt) layer (adaptation layer can also be referred to as Sidelink relay adaptation protocol (Sidelink relay adaptation protocol) layer), packet data convergence layer protocol (packet data convergence protocol, PDCP) layer (for example, Fig. 2 in (a) shown in Uu-PDCP), Service Data Adaptation Protocol (Service Data Adaptation Protocol, SDAP) layer (such as, Uu-SDAP shown in Figure 2 (a)) and Internet Protocol (Internet Protocol, IP) layer.
  • PHY Physical (physical, PHY) layer (such as, PC5-PHY and Uu-PHY shown in (a
  • PHY layer e.g., PC5-PHY and Uu-PHY shown in (b) in FIG. 2
  • MAC layer e.g., PC5-MAC and Uu-MAC shown in (b) in FIG. 2
  • RLC layer e.g. PC5-RLC and Uu-RLC shown in (b) in Figure 2
  • adapt layer e.g. PC5-RLC and Uu-RLC shown in (b) in Figure 2
  • PDCP layer e.g. Uu-PDCP shown in (b) in Figure 2
  • wireless Resource control (radio resource control, RRC) layer eg, Uu-RRC shown in (a) in Figure 2
  • non-access non-access stadium, NAS
  • the adaptation layer between the Remote UE and the Relay UE is to support the mapping of multiple Uu-PDCP entities of the Remote UE to one SL-RLC entity, that is, to support the Uu data radio bearer (Data Radio Bearer, DRB) of the Remote UE N:1 mapping with SL DRB, where DRB can be understood as RLC bearer or RLC channel (RLC channel).
  • DRB Data Radio Bearer
  • the adaptation layer includes the identification information of the Remote UE.
  • the identification information of the Remote UE may be allocated by the Relay UE, or may be allocated by the access network equipment.
  • Buffer Status Report (Buffer Status Report, BSR): UE can insert a BSR control unit in the packet data unit (Packet Data Unit, PDU) of the MAC layer to report to the access network device: one or several logical channels How much data does the group currently need to send, and it hopes to allocate wireless resources or time-frequency resources.
  • PDU Packet Data Unit
  • This method of sending the BSR control unit can let the access network device know the amount of data that the UE needs to send, and the access network device can allocate radio resources or time-frequency resources in a targeted manner.
  • the action of the UE sending the BSR control unit itself also requires uplink radio resources or time-frequency resources. If the UE does not have any uplink radio resources or time-frequency resources, there is no way to send the BSR. Then the UE needs to send the uplink A scheduling request (Scheduling Request, SR) sends a resource application to the access network device. Because the BSR is encapsulated in the MAC PDU and sent to the network side through the PUSCH channel, uplink radio resources or time-frequency resources are required, while the SR signal can be transmitted in the PUCCH control channel without the need for uplink radio resources or time-frequency resources. If there are no frequency resources, the resource application can be sent to the network side.
  • Scheduling Request Scheduling Request
  • Logical Channel Prioritization (LCP) process For a UE, there may be multiple services at the same time, or multiple logical channels need to be transmitted, then at the MAC layer, the UE needs to allocate uplink resources according to the access network equipment , the data of multiple logical channels are multiplexed and then transmitted. Each logical channel corresponds to a logical channel and is configured with a logical channel priority. The process of multiplexing and transmitting data of multiple logical channels is called the LCP process.
  • SCI Sidelink control information
  • a side link or a side link refers to a transmission link between terminal devices.
  • the SCI can be used to indicate the location of resources for transmitting data on the sidelink.
  • Sidelink resources For Sidelink communication, there are two ways for UE to obtain sidelink resources. One is called Mode1, which can be understood as scheduling and allocating resources by access network equipment. The specific implementation methods include:
  • the access network device schedules through downlink control information (DCI); or the access network device authorizes configuration (configured grant, CG) resources through RRC configuration.
  • DCI downlink control information
  • CG configured grant
  • the access network device needs the UE to report the current SL buffer status through the buffer status report (Buffer Status Report, BSR) through the DCI scheduling method; the RRC configuration method of the CG resource requires the UE to first report the current SL buffer status through the uplink RRC message to the access network device.
  • Network devices report periodic service model information.
  • Mode2 can be understood as being selected by the UE itself.
  • the UE will be configured with one or more resource pools. In the resource pool, the UE can determine which resources can be used and which resources cannot be used based on rules, and then select resources suitable for the current data transmission requirements from the available resources for data transmission. send.
  • the uplink data processing process of the Remote UE includes the following steps through the above-mentioned Sidelink resource acquisition method:
  • Step 1 The Remote UE sends uplink data to the Relay UE that provides relay services for it.
  • the way the Remote UE accesses the network is single-path as shown in (a) in Figure 1.
  • the Remote UE obtains Sidelink resources through the above-mentioned Mode2 method, and sends uplink data to the Relay UE.
  • Step 2 After the Relay UE receives the data from the Remote UE, the data enters the Uu module and triggers the Uu BSR.
  • the Relay UE internally displays the data received from the Remote UE through the SL module. After processing, the data enters the Uu module and triggers the BSR on the Uu interface.
  • the Relay UE needs to trigger SR first, and then send BSR.
  • Step 3 The Relay UE receives the DCI scheduling of the access network equipment, and uses the scheduled uplink resources for data transmission.
  • the Relay UE needs to perform a logical channel priority process first to select logical channel data for transmission. Theoretically, if there is only one Remote UE served by the Relay UE, the data of the Remote UE can be sent using the current scheduling resource. However, if there are multiple Remote UEs served by the Relay UE, and other Remote UEs have higher data priorities, then the Relay UE may send these high-priority data preferentially.
  • the uplink data transmission delay of the Remote UE will increase significantly, resulting in a poor experience for the Remote UE when accessing the network through the Relay UE.
  • for indication may include both direct indication and indirect indication.
  • indication information for indicating A it may include that the indication information directly indicates A or indirectly indicates A, but it does not mean that A must be included in the indication information.
  • the information to be indicated can be sent together as a whole, or can be divided into multiple sub-information and sent separately, and the sending periods and/or sending timings of these sub-information can be the same or different.
  • the specific sending method is not limited in this application.
  • the sending cycle and/or sending timing of these sub-information may be predefined, for example, pre-defined according to a protocol, or may be configured by the transmitting end device by sending configuration information to the receiving end device.
  • the configuration information may include, for example but not limited to, one or a combination of at least two of radio resource control signaling, media access control (media access control, MAC) layer signaling, and physical layer signaling.
  • the radio resource control signaling includes, for example, radio resource control (radio resource control, RRC) signaling;
  • the MAC layer signaling includes, for example, a MAC control element (control element, CE);
  • the physical layer signaling includes, for example, DCI.
  • preset may include being indicated by signaling of a network device, or being pre-defined, for example, defined by a protocol.
  • pre-defined can be realized by pre-saving corresponding codes, tables or other methods that can be used to indicate relevant information in devices (for example, including terminal devices and network devices). limited.
  • the "storage" mentioned in the embodiment of the present application may refer to saving in one or more memories.
  • the one or more memories may be provided independently, or may be integrated in an encoder or decoder, a processor, or a communication device.
  • a part of the one or more memories may also be provided separately, and a part may be integrated in a decoder, a processor, or a communication device.
  • the type of the storage may be any form of storage medium, which is not limited in this application.
  • the "protocols" involved in the embodiments of the present application may refer to standard protocols in the communication field, for example, may include LTE protocols, NR protocols, and related protocols applied in future communication systems, which are not limited in this application.
  • the embodiment of the present application involves that one piece of information (such as information #1) "includes" another piece of information (such as information #2), which can be understood as the information #1 explicitly carrying or implicitly carrying the information# 2.
  • the information #1 directly carries the information #2; for example, the information #1 carries the indication information indicating the information #2, and the receiving end device receiving the information #1 can obtain the information # according to the indication information 2, and the indication information is used to indicate that information #2 may be predefined or stipulated by a protocol, or an explicit or implicit indication.
  • the "include” involved in the embodiment of the present application may mean “for”.
  • the terminal device includes a Remote UE may indicate that the terminal device is a Remote UE; also for example, resource #1 includes resources used for data transmission may be Indicates that resource #1 is the resource used for data transmission.
  • the Relay UE requests the access network device in advance for uplink resources for transmitting the uplink data before the uplink data of the Remote UE arrives, so as to reduce the transmission delay of the uplink data of the Remote UE. Purpose.
  • the embodiments shown below do not specifically limit the specific structure of the execution subject of the method provided in the embodiment of the application, as long as the program that records the code of the method provided in the embodiment of the application can be executed according to the application
  • the method provided in the embodiment is sufficient for communication.
  • the execution subject of the method provided in the embodiment of the present application may be a terminal device or a network device, or a functional module in a terminal device or a network device that can call a program and execute the program.
  • Fig. 3 is a schematic flowchart of a communication method provided by an embodiment of the present application. This communication method can be applied to the Sidelink UE-to-Network Relay scenario shown above.
  • the second terminal device that provides relay services is referred to as Relay UE
  • the remote terminal device is Remote UE
  • the access The network device is RAN as an example for description.
  • the second terminal device may be a device providing a relay service.
  • the device providing the relay service may be a Relay UE, or may also be other devices, network elements or nodes capable of providing the relay service.
  • the first terminal device may be a device that needs to access the network through the second terminal device. It can be called Remote UE, and it can also be called remote node, remote device, etc.
  • the access network device may be a device that provides network access services for terminal devices, and may be called a RAN, or may be called a network device or other names.
  • the actions performed by the Relay UE hereinafter may be the Relay UE, or may also be functional modules in the Relay UE that can call programs and execute programs, or may also be chips in the Relay UE.
  • the specific structure of the execution subject there is no special limitation on the specific structure of the execution subject, and for the convenience of description, it can be described by taking the execution subject as the Relay UE as an example.
  • the action performed by the Remote UE hereinafter may be the Remote UE, or it may also be a functional module in the Remote UE that can call a program and execute the program, or it may be a chip in the Remote UE.
  • the action performed by the RAN may be the RAN, or may also be a functional module in the RAN capable of invoking a program and executing the program, or may also be a chip in the RAN.
  • the communication method shown in Figure 3 includes the following steps:
  • the Remote UE sends the first information to the Relay UE, or the Relay UE receives the first information from the Remote UE.
  • the first information is used to determine first cache information, and the first cache information is used to indicate the size of the first data.
  • the first data is the data that the Remote UE needs to send to the RAN through the Relay UE; or the first data is the data that the Remote UE needs to send to the RAN through the Relay UE.
  • the first data is data that the Remote UE needs to send to the RAN, which may be called "uplink data”.
  • the first data can be understood as a PDCP PDU, including but not limited to: a PDCP PDU of a data radio bearer (data radio bearer, DRB) or a PDCP PDU of a signaling radio bearer (signal radio bearer, SRB).
  • a PDCP PDU of a data radio bearer data radio bearer, DRB
  • a PDCP PDU of a signaling radio bearer signal radio bearer
  • the first information is included in the SCI.
  • the Remote UE may send the first information through the PC5 interface between the Relay UE and the Remote UE, and the first information occupies SL resources between the Relay UE and the Remote UE.
  • the manner in which the Remote UE accesses the network through the Relay UE in this embodiment may be a single-path manner (such as the single-path manner shown in (a) in FIG. 1 ).
  • the Remote UE can obtain SL resources based on the Mode2 method introduced above, and the SL resources are used to send uplink data to the Relay UE.
  • the manner in which the Remote UE accesses the network through the Relay UE in this embodiment may be a multipath manner, such as a dual-path manner (as shown in (b) in FIG. 1 ).
  • the Remote UE can obtain SL resources based on Mode1 or Mode2 introduced above, and the SL resources are used to send uplink data to the Relay UE.
  • the Remote UE acquires the SL resource there is no limitation on how the Remote UE acquires the SL resource, and it may be the Mode1 or Mode2 described above.
  • the Relay UE After the Relay UE receives the first information, it can determine the first cache information according to the first information, and the method flow shown in FIG. 3 also includes:
  • the Relay UE determines first cached information.
  • the Relay UE determines the first cached information in the following two ways:
  • Manner 1 the first information is implicit information used to determine the first cache information.
  • the Remote UE sends the first information to the Relay UE, including: the Remote UE sends a message to the Relay UE, and the message includes the above-mentioned first information and second data. It can be understood that, when the Remote UE sends the current data (second data) to the first terminal, it simultaneously sends the first information to the Relay UE.
  • the first information includes first sidelink SL resource information used by the Remote UE to send the first data to the Relay UE, and the first SL resource information is used to determine the above-mentioned first cache information.
  • the Relay UE estimates the size of the first data according to the SL resource size indicated by the first SL resource information, so as to determine the first cache information.
  • the first SL resource information includes SL resource information for retransmitting the second data and/or reserved SL resource information for new data transmission. Then the Relay UE determines the first cache information according to the SL resource size for retransmitting the second data and/or the reserved SL resource size for new data transmission.
  • the above-mentioned first data may be retransmitted second data.
  • the Relay UE may fail to decode the second data successfully, but the Relay UE, according to the retransmission resource indicated by the SL resource information for retransmitting the second data in the first information, It is expected that the second data can be successfully decoded next time.
  • the Relay UE may estimate the size of the successfully decoded retransmitted second data based on the retransmission resource size indicated by the SL resource information for retransmitting the second data and the modulation and coding scheme (MCS), Therefore, the first cache information is determined.
  • MCS modulation and coding scheme
  • the above-mentioned first data may be newly transmitted data to be transmitted.
  • the Relay UE may determine the reserved SL resources for newly transmitted data according to the reserved SL resource information for newly transmitted data, and estimate that after receiving the first information t, the Relay UE receives from the Remote UE To the newly transmitted data, and the Relay UE is based on the reserved SL resource information for the newly transmitted data indicated by the reserved data for the newly transmitted data
  • the SL resource size estimates the second data size, thereby determining the first cache information.
  • the first SL resource information may also be used to indicate the time domain position of the first SL resource, and the Relay UE may determine the first time information according to the first SL resource information, and the first time information is used for Indicating the moment when the Relay UE receives the first data or sends the first data.
  • the Relay UE indirectly determines the arrival time of the first data according to the time domain position of the SL resource indicated by the first SL resource information, or further estimates the time of sending the first data according to the arrival time of the first data and the local processing time.
  • the first SL resource information may also be used to indicate the time-domain position of the SL resource for retransmitting the second data and/or the time-domain position of the reserved SL resource for new data transmission, and the Relay UE may use the time-domain position of the SL resource for retransmission
  • the first time information is determined based on the SL resource time domain position of the second data and/or the reserved SL resource time domain position for newly transmitted data.
  • the first information shown in the above method 1 being implicit information used to determine the first cache information
  • the first information can also be displayed information used to determine the first cache information, such as the following Method two.
  • Manner 2 The first information is displayed information for determining the first cached information.
  • the first information includes the second cache information of the first data, and the second cache information is used to indicate the first logical channel group corresponding to the first data (or the first logical channel group granularity) cache information;
  • the Remote UE determining the first cache information according to the first information includes: the Remote UE determining the second logical channel group granularity corresponding to the first data according to the second cache information and the first correspondence
  • the cache information of the second logical channel group (or second logical channel group granularity) is the first cache information, wherein the first correspondence is the first logical channel group and the second logical channel group Correspondence between two logical channel groups, the first logical channel group is a logical channel group between the Relay UE and the Remote UE, and the second logical channel group is between the Relay UE and the RAN logical channel group.
  • the corresponding relationship between the first logical channel group and the second logical channel group includes:
  • the first logical channel group #1 corresponds to the second logical channel group #1, wherein the buffer information of the first logical channel group #1 indicates that the buffer of the first logical channel group #1 is 10M, then the second logical channel The cache of group #1 is 10M.
  • the first logical channel group and the second logical channel group are many-to-one.
  • the first logical channel group #1 and the first logical channel group #2 correspond to the second logical channel group #1, wherein the buffer information of the first logical channel group #1 indicates the buffer information of the first logical channel group #1 is 10M, the buffer information of the first logical channel group #2 indicates that the buffer of the first logical channel group #2 is 10M, and the buffer of the second logical channel group #1 is 20M.
  • the first correspondence is indicated by the RAN to the Relay UE; or, the first correspondence is jointly indicated by the RAN and the Remote UE to the Relay UE; or, the first correspondence is preset.
  • the first information further includes second time information, and the second time information is used to indicate to the Relay UE the moment when the Relay UE receives the first data or sends the The moment of the first data.
  • the second time information is sent by the first terminal device to the second terminal device, the second time information is identified by a time unit label on the first communication interface between the Relay UE and the Remote UE.
  • the second terminal device may The second time information is converted into first time information recognizable by the RAN, so as to indicate to the RAN the moment when the first terminal device receives the first data or sends the first data.
  • the Relay UE determines the first time information according to the second correspondence and the second time information, and the first time information is used to indicate to the RAN the moment when the Relay UE receives the first data or sends the The moment of the first data, the first time information is identified by the label of the time unit on the second communication interface between the Remote UE and the RAN.
  • the second corresponding relationship is the corresponding relationship between the first timing information and the second timing information
  • the first timing information is the timing information of the first communication interface between the Relay UE and the Remote UE
  • the second timing information is timing information of a second communication interface between the Relay UE and the RAN.
  • an offset value may be added .
  • the above-mentioned second time information is identified by the slot on the first communication interface
  • the first time information is identified by the slot on the second communication interface
  • the Relay UE is aligning the slot boundary on the first communication interface to the second communication interface
  • the time unit may be a frame, a subframe, a slot, etc.
  • the label of the time unit may be a frame number, a subframe number, a slot number, or the like.
  • the second correspondence is determined by the Relay UE.
  • the Relay UE After the Relay UE determines the above-mentioned first cache information and before receiving the first data, it may request the RAN for the first resource for transmitting the first data, and the method flow shown in FIG. 3 also includes:
  • the Relay UE sends the first request information to the RAN, or the RAN receives the first request information from the Relay UE.
  • the first request information is used to request a first resource.
  • the first request information includes first cache information, so that the RAN can determine the size of the configured first resource based on the first cache information.
  • the function of the first request information is similar to that of the BSR.
  • the first request information may be called pre-BSR.
  • the Relay UE Before the Relay UE receives the first data from the Remote UE, it sends the first request information to the RAN. It may be that the Relay UE determines the time x for receiving the first data according to the first information (such as SL resource information), and sends the request to the RAN before the time x. Send the first request information.
  • the first information such as SL resource information
  • the Relay UE may also determine the first time information according to the first information, and if the Relay UE determines that there is the first time information, the first request information also includes the first time information.
  • the time indicated by the first time information sent by the Relay UE to the RAN needs to be after the retransmission resource or the new transmission resource (for example, the interval time t), the purpose is to allow the Relay UE to have time for the first
  • the protocol stack introduced in the basic concept above as shown in (a) and (b) in Figure 2), after the Relay UE receives the data from PC5, it can be sent when the data enters the Uu module. It needs to be processed by the relevant protocol stack in the middle, and these processes will take some time.
  • Fig. 4 is a schematic diagram of a time indicated by first time information and a time domain position of a resource indicated by the first information provided by an embodiment of the present application.
  • time t3 When the end time of the transmission resource time domain position indicated by the first information is time t3, the time indicated by the first time information is time t4, and the interval between time t3 and time t4 is T2.
  • the Relay UE can provide relay services for multiple Remote UEs. That is, considering that a Relay UE may serve multiple Remote UEs, at this time, the indication information of the Remote UE (such as the identification information of the Remote UE) may also be carried in the first request information, which is used to indicate that the current first request information is Triggered for which Remote UE's uplink data.
  • the RAN may also send configuration information to the Relay UE, where the configuration information is used to indicate which (or which) Remote UE the Relay UE may send the above-mentioned first request information to the RAN, and the method flow shown in Figure 3 also includes:
  • the Relay UE receives the configuration information from the RAN, or the RAN sends the configuration information to the Relay UE.
  • the configuration information is used to indicate that the Relay UE can send the first request information for at least one terminal device, where the at least one terminal device includes the Remote UE.
  • the RAN may indicate the first uplink resource through DCI, and the method flow shown in FIG. 3 also includes:
  • the Relay UE receives the first DCI from the RAN, or the RAN sends the first DCI to the Relay UE.
  • the first DCI is used to indicate the first resource
  • the first DCI includes first indication information, where the first indication information is used to indicate that the first resource is used to transmit uplink data of the Remote UE.
  • the Relay UE receives the first data from the Remote UE, or the Remote UE sends the first data to the Relay UE.
  • step S340 and step S350 the execution time sequence of step S340 and step S350 is not fixed, that is, the Relay UE may receive the uplink data sent by the Remote UE first, or may receive the DCI sent by the RAN first.
  • the position of the first uplink resource scheduled by the DCI in the time domain needs to be after the Relay UE receives the first data.
  • the first time information may be carried in the first request information, so that the first uplink resource scheduled by the RAN through the DCI is after the Relay UE receives the first data.
  • the first time information indicates that the moment when the Relay UE receives the first data is tr, and the position of the first uplink resource scheduled by the network access device through the DCI in the time domain is after tr.
  • the time for sending the first request information may be controlled so that the first uplink resource scheduled by the RAN through the DCI is after the Relay UE receives the first data.
  • the Relay UE estimates that it may receive the first data at time tr, and estimates that it may receive the first uplink resource scheduled by DCI after the duration tb of sending the first request information, and may control the time after the duration tb of sending the first request information The time is after time tr, so as to achieve the purpose that the first uplink resource scheduled by the RAN through the DCI is after the Relay UE receives the first data.
  • the Relay UE sends the first data to the RAN, and the method flow shown in Figure 3 also includes:
  • the Relay UE sends the first data to the RAN, or the RAN receives the first data from the Relay UE.
  • the Relay UE may also have its own service data to send.
  • a situation may arise that the Relay UE triggers the first request information for the Remote UE, but after the arrival of the first uplink resource scheduled by the RAN Before, the Relay UE generated its own service data. If the service data of the Relay UE has a higher priority, the Relay UE may use the first uplink resource scheduled by the RAN to send its own service data first. And this may not match the original intention of RAN scheduling.
  • the RAN may add indication information in the DCI, indicating that the uplink resource is used for uplink data of the Remote UE. Further, it may also indicate which Remote UE's uplink data the uplink resource is used for. For example, the DCI includes first indication information, and the first indication information is used to indicate that the first uplink resource is used to transmit the uplink data of the Remote UE. data.
  • Relay UE executes LCP, it only considers those logical channels that carry Remote UE data, and does not consider the logical channel corresponding to Relay UE's own data.
  • the method flow shown in FIG. 3 can reduce the time delay for the Remote UE to send data to the RAN through the Relay UE by requesting the RAN in advance for uplink resources for data transmission before receiving the first data.
  • the present application also provides another communication method, which can reduce the delay for the Remote UE to send data to the RAN through the Relay UE, which will be described below in conjunction with FIG. 5 .
  • Fig. 5 is a schematic flowchart of another communication method provided by an embodiment of the present application. This communication method can be applied to the Sidelink UE-to-Network Relay scenario shown above, including the following steps:
  • Step 1 Relay UE receives resource indication information.
  • the resource indication information is used to indicate a second resource, the second resource corresponds to a second SL resource, and the second SL resource is a resource used by the Remote UE to send the third data to the Relay UE.
  • the third data is the data that the Remote UE needs to send to the RAN through the Relay UE; or the third data is the data that the Remote UE needs to send to the RAN through the Relay UE.
  • the Relay UE receives the resource indication information in the following two ways:
  • Mode 1 Relay UE receives resource indication information from RAN.
  • the method process shown in Figure 5 includes:
  • the RAN sends the second DCI to the Relay UE, or the Relay UE receives the second DCI from the RAN.
  • the second DCI is used to indicate the second resource and the second SL resource. It can be understood that the RAN simultaneously schedules the second SL resource and the second resource through a second DCI, and the second DCI can be received by the Relay UE and the Remote UE at the same time, so that the Remote UE uses the second SL resource indicated in the second DCI Send the third data to the Relay UE, and the Relay UE uses the second uplink resource indicated in the second DCI to send the third data received from the Remote UE to the RAN.
  • the Relay UE does not need to request resources for transmitting the third data from the RAN after receiving the third data, thereby reducing the time delay for the Remote UE to send data to the RAN through the Relay UE.
  • the RAN sends the second DCI to the Remote UE, or the Remote UE receives the second DCI from the RAN.
  • the RAN may be the second DCI sent after receiving the SL BSR from the Remote UE.
  • the SL BSR includes second indication information, and the second indication information is used to indicate the cache size information of the third data that the Remote UE needs to send to the Relay UE.
  • both the Remote UE and the Relay UE use the previously configured first identifier to monitor the corresponding physical channel, so as to receive the second DCI sent by the RAN.
  • the method flow shown in FIG. 5 also includes:
  • the RAN sends the first identifier to the Relay UE.
  • the first identity is used to receive the second DCI, and the first identity can be used to receive the second DCI. It can be understood that the Relay UE can use the first identity to perform second DCI descrambling. Correspondingly, the RAN sends the message to the Relay UE When sending the second DCI, the first identifier will be used for scrambling.
  • the Relay UE determines to use the second uplink resource to send the third data received from the second SL resource according to the second DCI.
  • the RAN can configure two identities for the Relay UE, one of which is used to receive traditional DCI (that is, the DCI for scheduling downlink resources), and the other ident (for example, the first ident) is used to receive the implementation
  • the DCI in the example that is, the second DCI that simultaneously schedules the second SL resource and the second resource.
  • the RAN sends the first identifier to the Remote UE.
  • the first identity is used to receive the second DCI, and the first identity can be used to receive the second DCI. It can be understood that the Remote UE can use the first identity to perform second DCI descrambling. Correspondingly, the RAN sends the remote UE a When sending the second DCI, the first identifier will be used for scrambling.
  • the Remote UE determines to use the second SL resource to send the third data to the Relay UE according to the DCI.
  • the RAN can configure two identities for the Remote UE, one of which is used to receive traditional DCI (that is, the DCI that schedules the second SL resource), and the other ident (for example, the first SL resource) is used to receive The DCI in this embodiment (that is, the second DCI that schedules the second SL resource and the second resource at the same time).
  • step S511 and step S512 can be understood as the same step, that is, for the RAN, the same DCI (such as the second DCI mentioned above) is issued, and the DCI can be used by the Remote UE and the Relay UE received.
  • the DCI sent by the RAN to the Relay UE and the Remote UE for joint scheduling of the second SL resource and the second resource may be different, and the RAN sends the identifier for receiving the DCI to the Relay UE and the Remote UE It can also be different.
  • the RAN sends DCI#1 to the Relay UE, and the DCI#1 is used to jointly schedule the second SL resource and the second resource.
  • the RAN sends the identifier #1 to the Relay UE, and the identifier #1 is used to receive DCI#1.
  • the RAN sends DCI#2 to the Remote UE, where the DCI#2 is used to jointly schedule the second SL resource and the second resource.
  • the RAN sends the identifier #2 to the Relay UE, and the identifier #2 is used to receive DCI#2.
  • the Remote UE may send the third data to the Relay UE, and the method flow shown in FIG. 5 also includes:
  • the Remote UE sends third data to the Relay UE.
  • the Remote UE may have other SL communication requirements besides the SL communication with the Relay UE, in order to ensure that the second SL resources currently scheduled by the RAN will not be used for other SL communication requirements, the second DCI scheduling When the Remote UE executes LCP, it gives priority to this SL unicast connection for communicating with the Relay UE.
  • the Relay UE sends third data to the RAN.
  • the Relay UE determines to use the second resource to send the third data received from the second SL resource according to the second DCI.
  • the Relay UE parses and obtains the third data from the second SL resource, and determines a logical channel corresponding to the third data; when performing a logical channel priority LCP process on the second uplink resource, put the above
  • the priority of the logical channel corresponding to the third data is set to the highest priority, wherein the logical channel corresponding to the third data is a logical channel between the Relay UE and the RAN. It can be understood that the third data is sent preferentially at this time.
  • Method 2 The Relay UE receives resource indication information from the Remote UE.
  • the method flow shown in Figure 5 includes:
  • the Relay UE receives the first message from the Remote UE.
  • the first message includes the third data and the resource indication information.
  • the third data and the resource indication information are sent at the same time; or the third data is sent later than the resource indication information.
  • the way the Remote UE learns the second resource may be that the RAN jointly schedules the second resource and the second SL resource to the Remote UE.
  • the method flow shown in FIG. 5 also includes:
  • the RAN sends the second DCI to the Remote UE, or the Remote UE receives the second DCI from the RAN.
  • the difference from method 1 is that after the Remote UE receives the second DCI, it determines the second SL resource, and uses the second SL resource to send the third data to the Relay UE, and the Remote UE also needs to transfer the second resource carried in the second DCI
  • the resource indication information is sent to the Relay UE together.
  • the resource indication information may be carried in the second-level SCI and sent to the Relay UE.
  • SCI includes first-level SCI and second-level SCI.
  • the content included in the first-level SCI is different from that included in the second-level SCI.
  • the first-level SCI includes source address, destination address, and physical sidelink shared channel (PSSCH) resource location.
  • PSSCH physical sidelink shared channel
  • the second-level SCI includes HARQ information, etc.
  • the first-level SCI is carried in the physical sidelink control channel (Physical sidelink control channel, PSCCH)
  • PSCCH Physical sidelink control channel
  • extended information for example, the above-mentioned resource indication information
  • the second DCI can be sent to the Remote UE, it does not need to be sent to the Remote UE and the Relay UE at the same time in the form of multicast, so the Remote UE can use the existing ID to solve it, and there is no need to introduce New identifier, so the configuration provided by the RAN for the Remote UE is similar to the current SL communication configuration, and there is no need to configure the identifier for the Remote UE to resolve the second DCI.
  • the Relay UE does not need to analyze the second DCI for joint scheduling of the second SL resource and the second resource, so the configuration provided by the RAN for the Relay UE is similar to the current Uu communication, such as the existing Uu physical channel configuration, etc.
  • the Relay UE configuration identifier is used to resolve the newly introduced second DCI.
  • the Relay UE sends third data to the RAN.
  • the Relay UE After receiving the third data and resource indication information from the Remote UE, the Relay UE determines to use the second resource to send the third data.
  • the Relay UE parses and obtains the third data from the second SL resource, and determines the logical channel corresponding to the third data; when performing a logical channel priority LCP process on the second uplink resource, Setting the priority of the logical channel corresponding to the third data to the highest priority, where the logical channel corresponding to the third data is a logical channel between the Relay UE and the RAN.
  • the equipment in the existing network architecture is used as an example for illustration (such as network equipment, terminal equipment, etc.). Examples are not limited. For example, devices that can implement the same function in the future are applicable to this embodiment of the application.
  • the methods and operations implemented by devices may also be implemented by components of the devices (eg, chips or circuits).
  • each network element includes a corresponding hardware structure and/or software module for performing each function.
  • the device for relaying communication provided by the embodiment of the present application will be described in detail with reference to FIG. 6 and FIG. 7 . It should be understood that the descriptions of the device embodiments correspond to the descriptions of the method embodiments. Therefore, for content that is not described in detail, reference may be made to the method embodiments above. For brevity, some content will not be repeated here.
  • the embodiment of the present application can divide the functional modules of the transmitting end device or the receiving end device according to the above method example, for example, each functional module can be divided corresponding to each function, or two or more functions can be integrated into one processing module middle.
  • the above-mentioned integrated modules can be implemented in the form of hardware or in the form of software function modules. It should be noted that the division of modules in the embodiment of the present application is schematic, and is only a logical function division, and there may be other division methods in actual implementation. In the following, description will be made by taking the division of each functional module corresponding to each function as an example.
  • FIG. 6 is a schematic block diagram of an apparatus 600 provided by an embodiment of the present application.
  • the device 600 includes a transceiver unit 610 and a processing unit 620 .
  • the transceiver unit 610 can implement a corresponding communication function, and the processing unit 620 is used for data processing.
  • the transceiver unit 610 may also be called a communication interface or a communication unit, and when the transceiver unit 610 realizes the function of acquiring information, it may also be called an acquisition unit.
  • the device 600 may further include a storage unit, which may be used to store instructions and/or data, and the processing unit 620 may read the instructions and/or data in the storage unit, so that the device implements the aforementioned method embodiments .
  • a storage unit which may be used to store instructions and/or data
  • the processing unit 620 may read the instructions and/or data in the storage unit, so that the device implements the aforementioned method embodiments .
  • the apparatus 600 can be used to execute the actions performed by the devices (such as the first terminal device, the second terminal device, and the access network device) in the method embodiments above.
  • the apparatus 600 can be a device or a configurable Regarding the components of the device, the transceiver unit 610 is configured to perform operations related to device transceiving in the method embodiments above, and the processing unit 620 is configured to perform operations related to device processing in the method embodiments above.
  • the apparatus 600 is configured to perform actions performed by the second terminal device in the above method embodiments. Specifically, the apparatus 600 is used to execute the actions performed by the second terminal device in the above method embodiment for the communication methods shown in FIG. 3 and FIG. 5, including the following two possibilities:
  • a transceiver unit 610 configured to receive first information from the first terminal device
  • a processing unit 620 configured to determine first cache information of the first data according to the first information, where the first cache information is used to indicate the size of the first data;
  • the transceiver unit 610 is further configured to send a first request message to the access network device before receiving the first data from the first terminal device, where the first request message includes the first cache information, and the first The request information is used to request the first resource,
  • the first data includes data to be sent by the first terminal device to the access network device through the second terminal device
  • the first terminal device includes a terminal device that accesses the access network device through the second terminal device
  • the first resource includes resources used by the second terminal device to send the first data to the access network device
  • the first information includes first sidelink SL resource information used by the first terminal device to send the first data to the second terminal device.
  • the processing unit 620 is further configured to determine first time information according to the first SL resource information, where the first time information is used to indicate the moment when the first terminal device receives the first data or sends the first data moment.
  • the first SL resource information includes SL resource information for retransmitted data and/or reserved SL resource information for newly transmitted data.
  • the first information includes second cache information of the first data, and the second cache information is used to indicate cache information of a first logical channel group corresponding to the first data, wherein the first logical channel A group is a logical channel group between the first terminal device and the second terminal device.
  • the processing unit 620 is further configured to determine the first cache information of the second logical channel group corresponding to the first data according to the second cache information and the first correspondence, where the first correspondence is the Correspondence between the first logical channel group and the second logical channel group, where the second logical channel group is a logical channel group between the first terminal device and the access network device.
  • the first information further includes second time information, and the second time information is used to indicate to the second terminal device the time when the second terminal device receives the first data or the time when the first data is sent. time.
  • the processing unit 620 is further configured to determine first time information according to the second time information and the second correspondence, where the first time information is used to indicate to the access network device that the first terminal device receives the The moment of the first data or the moment of sending the first data, wherein the second correspondence is the correspondence between the first timing information and the second timing information, and the first timing information is the correspondence between the first terminal device and the Timing information of the first communication interface between the second terminal device, where the second timing information is timing information of the second communication interface between the first terminal device and the access network device.
  • the transceiver unit 610 is configured to receive configuration information from the access network device, where the configuration information is used to indicate the ability to send the first request information for at least one terminal device, where the at least one terminal device includes the first request information. a terminal device.
  • the transceiving unit 610 is configured to receive first downlink control information DCI from the access network device, where the first DCI is used to indicate the first resource.
  • the first DCI includes first indication information, where the first indication information is used to indicate that the first resource is used to transmit uplink data of the first terminal device.
  • a transceiver unit 610 configured to receive resource indication information, where the resource indication information is used to indicate a second resource;
  • the transceiving unit 610 is further configured to use the second resource to send third data to the access network device,
  • the third data includes data to be sent by the first terminal device to the access network device through the second terminal device
  • the first terminal device includes a terminal device that accesses the access network device through the second terminal device
  • the second resource corresponds to a second side link SL resource
  • the second SL resource is a resource used by the first terminal device to send the third data to the second terminal device.
  • the transceiving unit 610 is further configured to receive second downlink control information DCI from the access network device before receiving the third data from the first terminal device, where the second DCI is used to indicate the the second resource and the second SL resource.
  • the transceiving unit 610 is further configured to receive a first identifier from the access network device, where the first identifier is used to receive the second DCI.
  • the processing unit 620 is configured to determine, according to the second DCI, to use the second resource to send the third data received from the second SL resource.
  • the transceiving unit 610 is further configured to receive a first message from the first terminal device, where the first message includes the third data and the resource indication information.
  • the processing unit 620 is configured to determine to use the second resource to send the third data according to the third data and the resource indication information.
  • the processing unit 620 is configured to parse and obtain the third data from the second SL resource, and determine a logical channel corresponding to the third data;
  • the logical channel corresponding to the third data is a logical channel between the second terminal device and the access network device.
  • the apparatus 600 can implement the steps or processes corresponding to the execution of the second terminal device in the method embodiment according to the embodiment of the present application, and the apparatus 600 can include a unit for executing the method executed by the second terminal device in the method embodiment . Moreover, each unit in the apparatus 600 and other operations and/or functions mentioned above are respectively for realizing the corresponding process of the method embodiment in the second terminal device in the method embodiment.
  • the transceiver unit 610 can be used to execute the transceiver steps in the method, such as steps S310, S331, S330, S340, S350, and S360; the processing unit 620 can be used to execute the method in The processing steps, such as step S320.
  • the transceiver unit 610 can be used to execute the transceiver steps in the method, such as steps S511, S512, S513, S514, S515, S516, S521, S522, S523, S524; the processing unit 620 may be used to perform processing steps in the method.
  • the apparatus 600 is configured to perform the actions performed by the first terminal device in the above method embodiments. Specifically, the apparatus 600 is used to execute the actions performed by the first terminal device in the above method embodiment for the communication methods shown in FIG. 3 and FIG. 5 respectively, including the following two possibilities:
  • a processing unit 620 configured to determine the first information, the first information is used to determine first cache information, and the first cache information is used to indicate the size of the first data;
  • the transceiving unit 610 is configured to send the first information to the second terminal device.
  • the first information includes first sidelink SL resource information used by the first terminal device to send the first data to the second terminal device.
  • the first SL resource information includes SL resource information for retransmitted data and/or reserved SL resource information for newly transmitted data.
  • the first information includes second cache information of the first data, and the second cache information is used to indicate cache information of a first logical channel group corresponding to the first data, wherein the first logical channel A group is a logical channel group between the first terminal device and the second terminal device.
  • the first information further includes second time information, and the second time information is used to indicate to the second terminal device the time when the second terminal device receives the first data or the time when the first data is sent. time.
  • the transceiving unit 610 is configured to receive second downlink control information DCI from the access network device, where the second DCI is used to indicate the second resource and the second side link SL resource;
  • a transceiver unit 610 configured to use the second SL resource to send third data to the first terminal device
  • the third data includes data to be sent by the first terminal device to the access network device through the second terminal device
  • the first terminal device includes a terminal device that accesses the access network device through the second terminal device
  • the The second resource corresponds to the second side link SL resource
  • the second resource is a resource used by the second terminal device to send the third data to the access network device.
  • the transceiving unit 610 is configured to send resource indication information to the first terminal device, where the resource indication information is used to indicate the second resource.
  • the transceiving unit 610 is configured to receive a first identifier from the access network device, where the first identifier is used to receive the second DCI.
  • the apparatus 600 can implement the steps or procedures corresponding to the execution of the first terminal device in the method embodiment according to the embodiment of the present application, and the apparatus 600 can include a unit for executing the method executed by the first terminal device in the method embodiment .
  • each unit in the apparatus 600 and other operations and/or functions described above are respectively for realizing the corresponding process of the method embodiment in the first terminal device in the method embodiment.
  • the transceiving unit 610 can be used to perform the transceiving steps in the method, such as steps S310 and S350; the processing unit 620 can be used to perform the processing steps in the method, such as step S430.
  • the transceiver unit 610 can be used to execute the transceiver steps in the method, such as steps S512, S514, S515, S516, S521, S522, S523; the processing unit 620 can be used to execute the method processing steps.
  • the apparatus 600 is configured to perform the actions performed by the access network device in the above method embodiments. Specifically, the apparatus 600 is used to execute the actions performed by the access network device in the above method embodiment for the communication methods shown in FIG. 3 and FIG. 5, including the following two possibilities:
  • a transceiver unit 610 configured to receive first request information from the second terminal device, where the first request information includes First cache information, the first request information is used to request the first resource, and the first cache information is used to indicate the size of the first data;
  • a transceiver unit 610 configured to send first downlink control information DCI to the second terminal device, where the first DCI is used to indicate the first resource
  • the first data includes data to be sent by the first terminal device to the access network device through the second terminal device
  • the first terminal device includes a terminal device that accesses the access network device through the second terminal device
  • the first resource includes resources used by the second terminal device to send the first data to the access network device.
  • the first request information further includes first time information, and the first time information is used to indicate the moment when the first terminal device receives the first data or sends the first data.
  • the first DCI includes first indication information, where the first indication information is used to indicate that the first resource is used to transmit uplink data of the first terminal device.
  • the processing unit 620 is configured to determine a second resource and a second side link SL resource, where the second resource corresponds to the second SL resource, where the second resource is for the second terminal device to send the third link to the access network device.
  • a resource used by data where the second SL resource is a resource used by the first terminal device to send the third data to the second terminal device;
  • a transceiver unit 610 configured to send second downlink control information DCI to the first terminal device, where the second DCI is used to indicate the second resource and the second SL resource,
  • the first terminal device is a terminal device that accesses the access network device through the second terminal device.
  • the transceiving unit 610 is configured to send a first identifier to the first terminal device, where the first identifier is used to receive the second DCI.
  • the transceiving unit 610 is configured to send a first identifier to the second terminal device, where the first identifier is used to receive the second DCI.
  • the transceiving unit 610 is configured to send the second DCI to the second terminal device.
  • the apparatus 600 can implement the steps or processes corresponding to the steps or processes executed by the access network device in the method embodiment according to the embodiment of the present application, and the apparatus 600 can include a unit for executing the method executed by the access network device in the method embodiment . Moreover, each unit in the apparatus 600 and other operations and/or functions mentioned above are respectively for realizing the corresponding process of the method embodiment in the access network device in the method embodiment.
  • the transceiver unit 610 can be used to execute the transceiver steps in the method, such as steps S331, S330, S340 and S360; the processing unit 620 can be used to execute the processing steps in the method.
  • the transceiver unit 610 can be used to execute the transceiver steps in the method, such as steps S511, S512, S513, S514, S516, S522, S523, and S524; the processing unit 620 can be used to execute A processing step in a method.
  • the processing unit 620 in the above embodiments may be implemented by at least one processor or processor-related circuits.
  • the transceiver unit 610 may be implemented by a transceiver or transceiver-related circuits.
  • the storage unit can be realized by at least one memory.
  • the embodiment of the present application further provides an apparatus 700 .
  • the apparatus 700 includes a processor 710 and may further include one or more memories 720 .
  • the processor 710 is coupled with the memory 720, the memory 720 is used to store computer programs or instructions and/or data, and the processor 710 is used to execute the computer programs or instructions and/or data stored in the memory 720 Data, so that the methods in the above method embodiments are executed.
  • the apparatus 700 includes one or more processors 710 .
  • the memory 720 may be integrated with the processor 710, or set separately.
  • the apparatus 700 may further include a transceiver 730, and the transceiver 730 is used for receiving and/or sending signals.
  • the processor 710 is configured to control the transceiver 730 to receive and/or send signals.
  • the apparatus 700 is used to implement the operations performed by the devices (such as the first terminal device, the second terminal device, and the access network device) in the above method embodiments.
  • An embodiment of the present application further provides a communication system, which includes the aforementioned first terminal device, second terminal device, and access network device.
  • the present application also provides a computer-readable storage medium, where instructions are stored in the computer-readable storage medium, and when the instructions are run on a computer, the computer executes the first step in the method shown in Figure 3 and Figure 5 .
  • the present application also provides a computer-readable storage medium, where instructions are stored in the computer-readable storage medium, and when the instructions are run on a computer, the computer is made to perform the second step in the method shown in Figure 3 and Figure 5 above. The various steps performed by the end device.
  • the present application also provides a computer-readable storage medium, where instructions are stored in the computer-readable storage medium, and when the instructions are run on a computer, the computer executes the above-mentioned methods shown in Figure 3 and Figure 5. Each step performed by the network device.
  • the present application also provides a computer program product containing instructions.
  • the computer program product is run on a computer, the computer is made to execute various steps performed by the second terminal device in the method shown in FIG. 3 and FIG. 5 .
  • the present application also provides a computer program product containing instructions.
  • the computer program product is run on a computer, the computer is made to execute each step performed by the first terminal device in the method shown in FIG. 3 and FIG. 5 .
  • the present application also provides a computer program product containing instructions.
  • the computer program product When the computer program product is run on a computer, the computer is made to execute each step performed by the access network device in the method shown in FIG. 3 and FIG. 5 .
  • the present application also provides a chip, including a processor.
  • the processor is used to read and execute the computer program stored in the memory to perform the corresponding operations performed by the terminal device (such as the second terminal device or the first terminal device) in the method for channel measurement provided by the present application and/or or process.
  • the chip further includes a memory, the memory is connected to the processor through a circuit or wires, and the processor is used to read and execute the computer program in the memory.
  • the chip further includes a communication interface, and the processor is connected to the communication interface.
  • the communication interface is used to receive processed data and/or information, and the processor obtains the data and/or information from the communication interface, and processes the data and/or information.
  • the communication interface may be an input/output interface, interface circuit, output circuit, input circuit, pin or related circuit on the chip.
  • the processor may also be embodied as a processing circuit or logic circuit.
  • the present application also provides a chip, including a processor.
  • the processor is used to read and execute the computer program stored in the memory, so as to execute the corresponding operations and/or processes performed by the network equipment (eg, access network equipment) in the method for channel measurement provided in this application.
  • the chip further includes a memory, the memory is connected to the processor through a circuit or wires, and the processor is used to read and execute the computer program in the memory.
  • the chip further includes a communication interface, and the processor is connected to the communication interface.
  • the communication interface is used to receive processed data and/or information, and the processor obtains the data and/or information from the communication interface, and processes the data and/or information.
  • the communication interface can be an input/output interface, interface circuit, output circuit, input circuit, pin or related circuit on the chip. Road and so on.
  • the processor may also be embodied as a processing circuit or logic circuit.
  • the above-mentioned chip can also be replaced by a system-on-a-chip, which will not be repeated here.
  • the disclosed systems, devices and methods may be implemented in other ways.
  • the device embodiments described above are only illustrative.
  • the division of the units is only a logical function division. In actual implementation, there may be other division methods.
  • multiple units or components can be combined or May be integrated into another system, or some features may be ignored, or not implemented.
  • the mutual coupling or direct coupling or communication connection shown or discussed may be through some interfaces, and the indirect coupling or communication connection of 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 may be distributed to multiple network units. Part or all of the units can be selected according to the actual situation to realize the purpose of the solution of this embodiment.
  • each functional unit in each embodiment of the present application may be integrated into one processing unit, each unit may exist separately physically, or two or more units may be integrated into one unit.
  • the functions described above are realized in the form of software function units and sold or used as independent products, they can be stored in a computer-readable storage medium.
  • the technical solution of the present application is essentially or the part that contributes to the prior art or the part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including Several instructions are used to make a computer device (which may be a personal computer, a server, or a network device, etc.) execute all or part of the steps of the methods described in the various embodiments of the present application.
  • the aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (read-only memory, ROM), random access memory (random access memory, RAM), magnetic disk or optical disc and other media that can store program codes. .
  • the term "and/or” in this application is only an association relationship describing associated objects, indicating that there may be three relationships, for example, A and/or B may indicate: A exists alone, and A and B exist simultaneously , there are three cases of B alone.
  • the character "/" in this article generally means that the contextual objects are an "or” relationship; the term “at least one” in this application can mean “one” and "two or more", for example, A At least one of , B, and C can mean: A exists alone, B exists alone, C exists alone, A and B exist simultaneously, A and C exist simultaneously, C and B exist simultaneously, and A, B, and C exist simultaneously, which Seven situations.

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Abstract

本申请实施例提供了一种通信方法,包括:接收来自第一终端设备的第一信息,并根据第一信息确定指示第一数据的大小的第一缓存信息,在接收到来自第一终端设备的第一数据之前,向接入网设备发送用于请求第一资源的第一请求信息,第一请求信息中包括第一缓存信息,第一数据为第一终端设备待通过第二终端设备向接入网设备发送的数据,第一终端设备为通过第二终端设备接入网络的终端设备,第一资源为第一终端设备向接入网设备发送第一数据使用的资源。通过在接收第一数据之前,提前向接入网设备请求用于传输数据的资源,能够降低第一终端设备通过第二终端设备向接入网设备发送数据的时延。

Description

通信方法和装置
本申请要求于2022年2月28日提交中国专利局、申请号为202210187791.8、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,并且更具体地,涉及一种通信方法和装置。
背景技术
在无线通信系统中,终端设备(user equipment,UE)之间可以通过网络设备进行通信,也可以不经过网络设备,直接进行通信。其中,UE之间直接进行的通信被广泛称为侧行链路(slidelink,SL)通信。具体地,UE获取SL通信资源的方式包括:无线通信系统中的演进型基站(evolved NodeB,eNB或eNodeB)调度方式和UE自选方式。
但是,在终端设备之间进行通信场景下,例如在远端终端设备(Remote UE)通过中继终端(Relay UE)接入网络(Sidelink UE-to-Network Relay)的场景下,上述的SL通信资源获取方式会影响Remote UE上行数据传输的实效性。因此,如何在降低Remote UE上行数据传输的时延成为亟待解决的问题。
发明内容
本申请实施例提供一种通信方法通过Relay UE在从Remote UE接收数据之前,提前向接入网设备请求用于传输该数据的资源,能够降低Remote UE上行数据传输的时延。
第一方面,提供了一种通信方法,该方法可以由第二终端设备(如,Relay UE)执行,或者,也可以由第二终端设备的组成部件(例如芯片或者电路)执行,对此不作限定,为了便于描述可以以第二终端设备执行为例进行说明。
该通信方法包括:接收来自第一终端设备的第一信息;根据该第一信息确定第一数据的第一缓存信息,该第一缓存信息用于指示该第一数据的大小;在接收到来自该第一终端设备的该第一数据之前,向接入网设备发送第一请求消息,该第一请求信息中包括该第一缓存信息,该第一请求信息用于请求第一资源,其中,该第一数据包括该第一终端设备待通过第二终端设备向该接入网设备发送的数据,该第一终端设备包括通过该第二终端设备接入该接入网设备的终端设备,该第一资源包括该第二终端设备向该接入网设备发送该第一数据使用的资源。
基于上述的技术方案,第二终端设备在接收到来自第一终端设备的第一数据之前,向接入网设备请求用于传输该第一数据的资源,而不是在接收到该第一数据之后才请求第一资源。通过提前向接入网设备请求用于传输该数据的资源,能够降低第一终端设备通过第二终端设备向接入网设备发送上行数据传输的时延。
由上述可知该通信方法可以应用在Sidelink UE-to-Network Relay的场景下,能够降低Remote UE上行数据传输的时延。
示例性地,第一数据可以理解为PDCP PDU,包括但不限于:DRB的PDCPPDU或SRB的PDCPPDU。第一资源可以理解为用于传输第一数据的上行(uplink,UL)资源。
具体地,可以通过第一信息确定第一数据到达的时刻,从而实现在接收到第一数据之前向接入网设备发送第一请求信息。例如,第一信息能够用于确定接收到第一数据的时刻为x时刻,那么在x时刻之前向接入网设备发送第一请求信息。其中,时刻可以是某个子帧、某个帧、某个时隙或某个符号,本申请不限定时刻的表示形式,能够标识时域上某个时间点的标识均可。
结合第一方面,在第一方面的某些实现方式中,该第一信息包括该第一终端设备向该第二终端设备发送该第一数据使用的第一侧行链路SL资源信息。
作为一种可能的实现方式,上述的第一信息可以是第一SL资源信息,而目前SL通信中第一终端设备可以向第二终端设备发送SL资源信息,也就是说本申请中可以复用第一终端设备和第二终端设备之间已有的SL资源信息,达到确定第一缓存信息的目的,无需新增信令,在节省信令开销的前提下,还可以增加了本申请方案与目前SL通信的兼容性。
例如,根据第一SL资源信息指示的SL资源的大小间接确定第一数据的大小。
结合第一方面,在第一方面的某些实现方式中,该方法还包括:根据该第一SL资源信息确定第一时间信息,该第一时间信息用于指示该第一终端设备接收到该第一数据的时刻或者发送该第一数据的时刻。
基于上述的技术方案,第二终端设备可以在接收到第一SL资源信息之后估计接收到第一数据的时刻或者发送第一数据的时刻,从而能够明确第一数据的到达时刻和/或发送时刻。
例如,根据第一SL资源信息指示的SL资源的时域位置间接确定第一数据到达的时刻,或者进一步地根据第一数据到达时刻和本地处理时间估计发送第一数据的时刻。
结合第一方面,在第一方面的某些实现方式中,该第一SL资源信息包括重传数据的SL资源信息和/或预留的用于新传数据的SL资源信息。
上述的第一SL资源信息可以是指示重传数据的SL资源和/或预留的用于新传数据的SL资源,也就是说第一数据可以是重传的数据也可以是新传的数据,本申请不做限定,提高方案的灵活性。
结合第一方面,在第一方面的某些实现方式中,该第一信息中包括该第一数据的第二缓存信息,该第二缓存信息用于指示该第一数据对应的第一逻辑信道组的缓存信息,其中,该第一逻辑信道组为该第一终端设备和该第二终端设备之间的逻辑信道组。
作为一种可能的实现方式,上述的第一信息可以是显示地指示第一数据的第二缓存信息。由于该第二缓存信息是第一终端设备向第二终端设备发送的,所以该第二缓存信息是通过第一终端设备和该第二终端设备之间的第一逻辑信道组体现的。该第一信息可以是第一终端设备新增的向第二终端设备发送的信息,也就是说不限定第一信息一定要是已有的信息,提高方案的灵活性。
结合第一方面,在第一方面的某些实现方式中,该根据该第一信息确定第一数据的第一缓存信息,包括:根据该第二缓存信息和第一对应关系确定该第一数据对应的第二逻辑 信道组的该第一缓存信息,其中,该第一对应关系为该第一逻辑信道组和第二逻辑信道组的对应关系,该第二逻辑信道组为该第一终端设备和该接入网设备之间的逻辑信道组。
基于上述的技术方案,第二终端设备可以在接收到显示指示第一数据的第二缓存信息之后,可以将该第二缓存信息转换为接入网设备能够识别的第一缓存信息,以实现向接入网设备指示第一数据的大小。
结合第一方面,在第一方面的某些实现方式中,该第一信息中还包括第二时间信息,该第二时间信息用于向该第二终端设备指示该第二终端设备接收到该第一数据的时刻或者发送该第一数据的时刻。
作为一种可能的实现方式,上述的第一信息可以是显示地指示第一数据的第二时间信息。由于该第二时间信息是第一终端设备向第二终端设备发送的,所以该第二时间信息是通过第一终端设备和该第二终端设备之间的定时信息确定的。该第一信息中包括的时间信息可以是第一终端设备新增的向第二终端设备发送的信息,也就是说不限定第一信息一定要是已有的信息,提高方案的灵活性。
结合第一方面,在第一方面的某些实现方式中,该方法还包括:根据该第二时间信息和第二对应关系确定第一时间信息,该第一时间信息用于向该接入网设备指示该第一终端设备接收到该第一数据的时刻或者发送该第一数据的时刻,其中,该第二对应关系为第一定时信息和第二定时信息之间的对应关系,该第一定时信息为该第一终端设备和该第二终端设备之间的第一通信接口的定时信息,该第二定时信息为该第一终端设备和该接入网设备之间的第二通信接口的定时信息。
基于上述的技术方案,第二终端设备可以在接收到显示指示第一数据的第二时间信息之后,可以将该第二时间信息转换为接入网设备能够识别的第一时间信息,以便于向接入网设备指示第一终端设备接收到该第一数据的时刻或者发送该第一数据的时刻。
结合第一方面,在第一方面的某些实现方式中,该第一信息包含于侧行链路控制信息SCI中。
可选地,第一信息可以携带在目前已有的信息(如,SCI)中,以达到节省信令开销的目的。
结合第一方面,在第一方面的某些实现方式中,该第一请求信息中还包括该第一时间信息。
基于上述的技术方案,第二终端设备可以将指示第一终端设备接收到该第一数据的时刻或者发送该第一数据的时刻的第一时间信息包括在第一请求信息中,以便于接入网设备在调度资源时考虑第一数据的接收或发送时刻。
结合第一方面,在第一方面的某些实现方式中,该方法还包括:接收来自该接入网设备的配置信息,该配置信息用于指示具有为至少一个终端设备发送该第一请求信息的能力,该至少一个终端设备包括该第一终端设备。
基于上述的技术方案,接入网设备可以通过配置信息指示第二终端设备具备为哪些终端设备提前请求上行资源的能力。
结合第一方面,在第一方面的某些实现方式中,该方法还包括:接收来自该接入网设备的第一下行控制信息DCI,该第一DCI用于指示该第一资源。
结合第一方面,在第一方面的某些实现方式中,该第一DCI中包括第一指示信息,该 第一指示信息用于指示该第一资源用于传输该第一终端设备的上行数据。
基于上述的技术方案,接入网设备可以通过第一指示信息指示调度的资源所针对的中断设备,明确资源的使用。
第二方面,提供了一种通信方法,该方法可以由第一终端设备(如,Remote UE)执行,或者,也可以由第一终端设备的组成部件(例如芯片或者电路)执行,对此不作限定,为了便于描述可以以第一终端设备执行为例进行说明。
该通信方法包括:根据待通过第二终端设备向接入网设备发送的第一数据确定第一信息,该第一信息用于确定第一缓存信息,该第一缓存信息用于指示该第一数据的大小;向第二终端设备发送该第一信息。
结合第二方面,在第二方面的某些实现方式中,该第一信息包括该第一终端设备向该第二终端设备发送该第一数据使用的第一侧行链路SL资源信息。
结合第二方面,在第二方面的某些实现方式中,该第一SL资源信息包括重传数据的SL资源信息和/或预留的用于新传数据的SL资源信息。
结合第二方面,在第二方面的某些实现方式中,该第一信息中包括该第一数据的第二缓存信息,该第二缓存信息用于指示该第一数据对应的第一逻辑信道组的缓存信息,其中,该第一逻辑信道组为该第一终端设备和该第二终端设备之间的逻辑信道组。
结合第二方面,在第二方面的某些实现方式中,该第一信息中还包括第二时间信息,该第二时间信息用于向该第二终端设备指示该第二终端设备接收到该第一数据的时刻或者发送该第一数据的时刻。
结合第二方面,在第二方面的某些实现方式中,该第一信息包含于侧行链路控制信息SCI中。
以上第二方面及其可能的设计所示方法的有益效果可参照第一方面及其可能的设计中的有益效果。
第三方面,提供了一种通信方法,该方法可以由接入网设备(如,Relay UE)执行,或者,也可以由接入网设备的组成部件(例如芯片或者电路)执行,对此不作限定,为了便于描述可以以接入网设备执行为例进行说明。
该通信方法包括:接收来自第二终端设备的第一请求信息,该第一请求信息中包括第一缓存信息,该第一请求信息用于请求第一资源,该第一缓存信息用于指示第一数据的大小;向该第二终端设备发送第一下行控制信息DCI,该第一DCI用于指示该第一资源,其中,该第一数据包括第一终端设备待通过该第二终端设备向接入网设备发送的数据,该第一终端设备包括通过该第二终端设备接入该接入网设备的终端设备,该第一资源包括该第二终端设备向该接入网设备发送该第一数据使用的资源。
结合第三方面,在第三方面的某些实现方式中,该第一请求信息中还包括第一时间信息,该第一时间信息用于指示该第一终端设备接收到该第一数据的时刻或者发送该第一数据的时刻。
结合第三方面,在第三方面的某些实现方式中,该第一DCI中包括第一指示信息,该第一指示信息用于指示该第一资源用于传输该第一终端设备的上行数据。
以上第三方面及其可能的设计所示方法的有益效果可参照第一方面及其可能的设计中的有益效果。
上述的第一方面至第三方面分别从第二终端设备、第一终端设备以及接入网设备的角度介绍了如何提前请求用于传输第一终端设备的上行数据的资源,以达到降低第一终端设备的上行数据传输的时延的通信方法。本申请中还提供了另一种能够降低第一终端设备的上行数据传输的时延的通信方法,通过联合调度SL资源和上行资源,避免了第二终端设备在接收到第一终端设备的上行数据之后请求资源,以达到降低第一终端设备的上行数据传输的时延。
为了便于理解,下面将结合第四方面至第六方面,分别从第二终端设备、第一终端设备以及接入网设备的角度介绍了如何通过联合调度的方式调度SL资源和上行资源,以达到降低第一终端设备的上行数据传输的时延的通信方法。
第四方面,提供了一种通信方法,该方法可以由第二终端设备(如,Relay UE)执行,或者,也可以由第二终端设备的组成部件(例如芯片或者电路)执行,对此不作限定,为了便于描述可以以第二终端设备执行为例进行说明。
该通信方法包括:接收资源指示信息,该资源指示信息用于指示第二资源;使用该第二资源向接入网设备发送第三数据,其中,该第三数据包括第一终端设备待通过第二终端设备向该接入网设备发送的数据,该第一终端设备包括通过该第二终端设备接入该接入网设备的终端设备,该第二资源与第二侧行链路SL资源相对应,该第二SL资源为该第一终端设备向该第二终端设备发送该第三数据使用的资源。
基于上述的技术方案,第二资源和第二SL资源相对应,也就是说第二资源和第二SL资源为联合调度的。第二终端设备可以在通过第二SL资源接收到来自第一终端设备的第三数据的情况下,通过第二资源转发该第三数据,无需在接收到第三数据之后请求用于传输该第三数据的上行资源,能够降低第一终端设备通过第二终端设备向接入网设备发送上行数据传输的时延。
结合第四方面,在第四方面的某些实现方式中,该第三数据为第一终端设备使用该第二侧行链路SL资源向第二终端设备发送的数据。
结合第四方面,在第四方面的某些实现方式中,该接收资源指示信息,包括:在接收到来自该第一终端设备的该第三数据之前,接收来自该接入网设备的第二下行控制信息DCI,该第二DCI用于指示该第二资源和该第二SL资源。
作为一种可能的实现方式,第二终端设备可以是从接入网设备接收到联合调度第二资源和该第二SL资源的DCI,以达到获知第二资源的目的。
结合第四方面,在第四方面的某些实现方式中,该方法还包括:该第一终端设备接收来自该接入网设备的第一标识,该第一标识用于接收该第二DCI。
结合第四方面,在第四方面的某些实现方式中,该方法还包括:根据该第二DCI确定使用该第二资源发送从该第二SL资源上接收到的该第三数据。
结合第四方面,在第四方面的某些实现方式中,该接收第二资源指示信息,包括:接收来自该第一终端设备的第一消息,该第一消息中包括该第三数据和该资源指示信息。
作为一种可能的实现方式,第二终端设备可以是从第一终端设备接收到资源指示信息,以达到获知第二资源的目的。
结合第四方面,在第四方面的某些实现方式中,该方法还包括:根据该第三数据和该资源指示信息确定使用该第二资源发送该第三数据。
结合第四方面,在第四方面的某些实现方式中,在使用该第二资源向接入网设备发送该第三数据之前,该方法还包括:从该第二SL资源解析得到该第三数据,确定该第三数据对应的逻辑信道;在该第二资源上进行逻辑信道优先级LCP过程时,将该第三数据对应的逻辑信道的优先级设置为最高优先级,其中,该第三数据对应的逻辑信道为该第二终端设备和该接入网设备之间的逻辑信道。
基于上述的技术方案,第二终端设备可以通过将第三数据对应的逻辑信道的优先级设置为最高优先级,以确保在第二资源上发送该第三数据。
第五方面,提供了一种通信方法,该方法可以由第一终端设备(如,Remote UE)执行,或者,也可以由第一终端设备的组成部件(例如芯片或者电路)执行,对此不作限定,为了便于描述可以以第一终端设备执行为例进行说明。
该通信方法包括:接收来自接入网设备的第二下行控制信息DCI,该第二DCI用于指示第二资源和第二侧行链路SL资源;使用该第二SL资源向第一终端设备发送第三数据,其中,该第三数据包括第一终端设备待通过第二终端设备向接入网设备发送的数据,该第一终端设备包括通过该第二终端设备接入该接入网设备的终端设备,该第二资源与第二侧行链路SL资源相对应,该第二资源为该第二终端设备向该接入网设备发送该第三数据使用的资源。
结合第五方面,在第五方面的某些实现方式中,该第三数据为第一终端设备使用该第二侧行链路SL资源向第二终端设备发送的数据。
结合第五方面,在第五方面的某些实现方式中,该方法还包括:该第二终端设备向该第一终端设备发送资源指示信息,该资源指示信息用于指示该第二资源。
结合第五方面,在第五方面的某些实现方式中,该方法还包括:该第二终端设备接收来自该接入网设备的第一标识,该第一标识用于接收该第二DCI。
以上第五方面及其可能的设计所示方法的有益效果可参照第四方面及其可能的设计中的有益效果。
第六方面,提供了一种通信方法,该方法可以由接入网设备(如,Relay UE)执行,或者,也可以由接入网设备的组成部件(例如芯片或者电路)执行,对此不作限定,为了便于描述可以以接入网设备执行为例进行说明。
该通信方法包括:确定第二资源和第二侧行链路SL资源,该第二资源与该第二SL资源相对应,该第二资源为第二终端设备向接入网设备发送第三数据使用的资源,该第二SL资源为第一终端设备向该第二终端设备发送该第三数据使用的资源;向该第一终端设备发送第二下行控制信息DCI,该第二DCI用于指示该第二资源和该第二SL资源,其中,该第一终端设备为通过该第二终端设备接入该接入网设备的终端设备。
结合第六方面,在第六方面的某些实现方式中,该方法还包括:向该第一终端设备发送第一标识,该第一标识用于接收该第二DCI。
结合第六方面,在第六方面的某些实现方式中,该方法还包括:向该第二终端设备发送第一标识,该第一标识用于接收该第二DCI。
结合第六方面,在第六方面的某些实现方式中,该方法还包括:向该第二终端设备发送该第二DCI。
以上第六方面及其可能的设计所示方法的有益效果可参照第四方面及其可能的设计 中的有益效果。
第七方面,提供了一种通信装置,该装置用于执行上述第一方面或第四方面提供的方法。具体地,该通信可以包括用于执行第一方面或第四方面的上述任意一种实现方式提供的方法的单元和/或模块,如处理单元和获取单元。
在一种实现方式中,获取单元可以是收发器,或,输入/输出接口;处理单元可以是至少一个处理器。可选地,收发器可以为收发电路。可选地,输入/输出接口可以为输入/输出电路。
在另一种实现方式中,获取单元可以是该芯片、芯片系统或电路上的输入/输出接口、接口电路、输出电路、输入电路、管脚或相关电路等;处理单元可以是至少一个处理器、处理电路或逻辑电路等。
以上第七方面及其可能的设计所示方法的有益效果可参照第一方面或第四方面及其可能的设计中的有益效果。
第八方面,提供一种通信装置。该通信装装置包括:至少一个处理器,至少一个处理器与至少一个存储器耦合。至少一个存储器用于存储计算机程序或指令,至少一个处理器用于从至少一个存储器中调用并运行该计算机程序或指令,使得通信装置执行第一方面或第四方面其任意可能的实现方式中的方法。
在一种实现方式中,该装置为第二终端设备。在另一种实现方式中,该装置为第二终端设备中的芯片、芯片系统或电路。
以上第八方面及其可能的设计所示方法的有益效果可参照第一方面或第四方面及其可能的设计中的有益效果。
第九方面,提供了一种通信装置,该装置用于执行上述第二方面或第五方面提供的方法。具体地,该通信装置可以包括用于执行第二方面或第五方面的上述任意一种实现方式提供的方法的单元和/或模块,如处理单元和获取单元。
在一种实现方式中,获取单元可以是收发器,或,输入/输出接口;处理单元可以是至少一个处理器。可选地,收发器可以为收发电路。可选地,输入/输出接口可以为输入/输出电路。
在另一种实现方式中,获取单元可以是该芯片、芯片系统或电路上的输入/输出接口、接口电路、输出电路、输入电路、管脚或相关电路等;处理单元可以是至少一个处理器、处理电路或逻辑电路等。
以上第九方面及其可能的设计所示方法的有益效果可参照第二方面或第五方面及其可能的设计中的有益效果。
第十方面,提供一种通信装置。该通信装装置包括:至少一个处理器,至少一个处理器与至少一个存储器耦合。至少一个存储器用于存储计算机程序或指令,至少一个处理器用于从至少一个存储器中调用并运行该计算机程序或指令,使得通信装置执行第二方面或第五方面其任意可能的实现方式中的方法。
在一种实现方式中,该装置为第一终端设备。在另一种实现方式中,该装置为第一终端设备中的芯片、芯片系统或电路。
以上第十方面及其可能的设计所示方法的有益效果可参照第二方面或第五方面及其可能的设计中的有益效果。
第十一方面,提供了一种通信装置,该装置用于执行上述第三方面或第六方面提供的方法。具体地,该通信装置可以包括用于执行第三方面或第六方面的上述任意一种实现方式提供的方法的单元和/或模块,如处理单元和获取单元。
在一种实现方式中,获取单元可以是收发器,或,输入/输出接口;处理单元可以是至少一个处理器。可选地,收发器可以为收发电路。可选地,输入/输出接口可以为输入/输出电路。
在另一种实现方式中,获取单元可以是该芯片、芯片系统或电路上的输入/输出接口、接口电路、输出电路、输入电路、管脚或相关电路等;处理单元可以是至少一个处理器、处理电路或逻辑电路等。
以上第十一方面及其可能的设计所示方法的有益效果可参照第三方面或第六方面及其可能的设计中的有益效果。
第十二方面,提供一种通信装置。该通信装装置包括:至少一个处理器,至少一个处理器与至少一个存储器耦合。至少一个存储器用于存储计算机程序或指令,至少一个处理器用于从至少一个存储器中调用并运行该计算机程序或指令,使得通信装置执行第三方面或第六方面其任意可能的实现方式中的方法。
在一种实现方式中,该装置为接入网设备。在另一种实现方式中,该装置为接入网设备中的芯片、芯片系统或电路。
以上第十二方面及其可能的设计所示方法的有益效果可参照第三方面或第六方面及其可能的设计中的有益效果。
第十三方面,提供一种计算机可读存储介质,该计算机可读存储介质存储用于设备执行的程序代码,该程序代码包括用于执行上述第一方面至第六方面的上述任意一种实现方式提供的方法。
第十四方面,提供一种包含指令的计算机程序产品,当该计算机程序产品在计算机上运行时,使得计算机执行上述第一方面至第六方面的上述任意一种实现方式提供的方法。
第十五方面,提供一种芯片,芯片包括处理器与通信接口,处理器通过通信接口读取存储器上存储的指令,执行上述第一方面至第六方面的上述任意一种实现方式提供的方法。
可选地,作为一种实现方式,芯片还包括存储器,存储器中存储有计算机程序或指令,处理器用于执行存储器上存储的计算机程序或指令,当计算机程序或指令被执行时,处理器用于执行上述第一方面或第一方面的上述任意一种实现方式提供的方法。
第十六方面,提供一种通信系统,包括上述的第七方面提供的装置、第九方面提供的装置和第十一方面提供的装置。
附图说明
图1中的(a)和(b)是本申请实施例适用的通信系统示意图。
图2中的(a)和(b)是本申请实施例提供的协议栈的示意图。
图3是本申请实施例提供的一种通信方法的示意性流程图。
图4是本申请实施例提供的一种第一时间信息所指示的时刻和第一信息所指示的资源时域位置的示意图。
图5是本申请实施例提供的另一种通信方法的示意性流程图。
图6是本申请实施例提供的装置600的示意性框图。
图7是本申请实施例提供的装置700的示意性框图。
具体实施方式
下面将结合附图,对本申请实施例中的技术方案进行描述。
本申请实施例的技术方案可以应用于远端终端设备(Remote UE)通过中继终端(Relay UE)接入网络(如,(无线)接入网设备(radio access network,(R)AN))的通信系统,其中,Relay UE接入网络的方式可以目前或未来的通信方式,包括但不限于:
长期演进(Long Term Evolution,LTE)系统、LTE频分双工(Frequency Division Duplex,FDD)系统、LTE时分双工(Time Division Duplex,TDD)、通用移动通信系统(Universal Mobile Telecommunication System,UMTS)、全球互联微波接入(Worldwide Interoperability for Microwave Access,WiMAX)通信系统、第五代(5th Generation,5G)系统或新无线(New Radio,NR)、未来的通信系统中终端设备接入网络的方式。
为了便于理解,首先结合图1中的(a)和(b)详细介绍本申请实施例能够应用的通信系统。图1中的(a)和(b)是本申请实施例适用的通信系统示意图。示例性地,Remote UE通过Relay UE接入网络包括两种方式:单路径方式和双路径方式,具体地,图1中的(a)所示的为单路径方式;图1中的(b)所示的为双路径方式。
从图1中的(a)可以看出单路径方式为:Remote UE通过Relay UE与接入网设备之间通过间接(indirect)路径(如图1中的(a)中所示的基于通信接口#1和通信接口#2的路径#1)进行通信。
从图1中的(b)可以看出双路径方式为:Remote UE和接入网设备之间有两条路径,一条是通过Relay UE的indirect路径(如图1中的(b)中所示的基于通信接口#1和通信接口#2的路径#1),一条是Remote UE和接入网设备之间的直接(direct)路径(如图1中的(b)中所示的基于通信接口#2的路径#2)。
示例性地,通信接口#1可以理解为UE之间的PC5接口,通信接口#2可以理解为UE和接入网设备之间的Uu接口,需要说明的是PC5接口、Uu接口只是举例,对本申请的保护范围不构成任何的限定,通信接口还可以是其他名称,这里不再赘述。
可以理解的是,在图1中的(b)所示的双路径场景下,接入网设备可以通过路径#2为Remote UE调度Sidelink资源,该Sidelink资源用于Remote UE向Relay UE发送上行数据。
本申请实施例中的终端设备(如上述的Remote UE和Relay UE)可以指接入终端、用户单元、用户站、移动站、移动台、中继站、远方站、远程终端、移动设备、用户终端(user terminal)、用户设备、终端(terminal)、无线通信设备、用户代理或用户装置。终端设备还可以是蜂窝电话、无绳电话、会话启动协议(session initiation protocol,SIP)电话、无线本地环路(wireless local loop,WLL)站、个人数字助理(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、车载设备、可穿戴设备,5G网络中的终端设备或者未来演进的公用陆地移动通信网络(public land mobile network,PLMN)中的终端设备或者未来车联网中的终端设备等,本申请实施例对此并不限定。
作为示例而非限定,在本申请实施例中,可穿戴设备也可以称为穿戴式智能设备,是应用穿戴式技术对日常穿戴进行智能化设计、开发出可以穿戴的设备的总称,如眼镜、手套、手表、服饰及鞋等。可穿戴设备即直接穿在身上,或是整合到用户的衣服或配件的一种便携式设备。可穿戴设备不仅仅是一种硬件设备,更是通过软件支持以及数据交互、云端交互来实现强大的功能。广义穿戴式智能设备包括功能全、尺寸大、可不依赖智能手机实现完整或者部分的功能,例如:智能手表或智能眼镜等,以及只专注于某一类应用功能,需要和其它设备如智能手机配合使用,如各类进行体征监测的智能手环、智能首饰等。
此外,在本申请实施例中,终端设备还可以是IoT系统中的终端设备,IoT是未来信息技术发展的重要组成部分,其主要技术特点是将物品通过通信技术与网络连接,从而实现人机互连,物物互连的智能化网络。在本申请实施例中,IOT技术可以通过例如窄带(narrow band,NB)技术,做到海量连接,深度覆盖,终端省电。
此外,在本申请实施例中,终端设备还可以包括智能打印机、火车探测器、加油站等传感器,主要功能包括收集数据(部分终端设备)、接收网络设备的控制信息与下行数据,并发送电磁波,向网络设备传输上行数据。
本申请实施例中的接入网设备可以是用于与终端设备通信的任意一种具有无线收发功能的通信设备。该设备包括但不限于: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)、家庭基站(home evolved NodeB,HeNB,或home Node B,HNB)、基带单元(baseBand unit,BBU),无线保真(wireless fidelity,WIFI)系统中的接入点(access point,AP)、无线中继节点、无线回传节点、传输点(transmission point,TP)或者发送接收点(transmission and reception point,TRP)等,还可以为5G系统,如,NR系统中的gNB,或,传输点(TRP或TP)等。
接入网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、气球和卫星上。本申请实施例中对接入网设备和终端设备所处的场景不做限定。
在本申请实施例中,终端设备或接入网设备包括硬件层、运行在硬件层之上的操作系统层,以及运行在操作系统层上的应用层。该硬件层包括中央处理器(central processing unit,CPU)、内存管理单元(memory management unit,MMU)和内存(也称为主存)等硬件。该操作系统可以是任意一种或多种通过进程(process)实现业务处理的计算机操作系统,例如,Linux操作系统、Unix操作系统、Android操作系统、iOS操作系统或windows操作系统等。该应用层包含浏览器、通讯录、文字处理软件、即时通信软件等应用。
另外,本申请的各个方面或特征可以实现成方法、装置或使用标准编程和/或工程技术的制品。本申请中使用的术语“制品”涵盖可从任何计算机可读器件、载体或介质访问的计算机程序。例如,计算机可读介质可以包括,但不限于:磁存储器件(例如,硬盘、软盘或磁带等),光盘(例如,压缩盘(compact disc,CD)、数字通用盘(digital versatile disc,DVD)等),智能卡和闪存器件(例如,可擦写可编程只读存储器(erasable programmable read-only memory,EPROM)、卡、棒或钥匙驱动器等)。另外,本文描述的各种存储介质可代表用于存储信息的一个或多个设备和/或其它机器可读介质。术语“机器可读存储介质”可包括但不限于,无线信道和能够存储、包含和/或承载指令和/或数据的各种其它 介质。
应理解,图1中的(a)和(b)仅为便于理解而示例的简化示意图,该通信系统中还可以包括其他接入网设备或者还可以包括其他终端设备,图1中的(a)和(b)中未予以画出。
例如,图1中的(a)和(b)所示的通信系统中还可以包括用于管理终端设备,数据传输以及接入网设备配置的核心网设备,如,包括接入和移动性管理功能(access and mobility management function,AMF)网元、会话管理功能(session management function,SMF)网元、用户面功能(user plane function,UPF)网元、策略控制功能(policy control function,PCF)网元等。
还例如,图1中的(a)和(b)所示的Relay UE可以同时为多个Remote UE提供中继服务(如,图1中的(a)中的Relay UE可以为除图1中的(a)中所示的Remote UE提供中继服务之外,还可以为其他的Remote UE提供中继服务,且其他的Remote UE通过Relay UE接入网络的方式可以是单路径或多路径方式)。
还例如,图1中的(a)和(b)所示的Remote UE可以通过多跳路径接入网络(如,图1中的(a)中的Remote UE可以通过多个Relay UE(如,Relay UE#1和Relay UE#2)接入网络,Remote UE与Relay UE#1通过通信接口#1进行连接,Relay UE#1和Relay UE#2通过通信接口#1进行连接,Relay UE#2和接入网设备通过通信接口#2进行连接)。
为便于理解本申请实施例,对本申请实施例中涉及的几个基本概念做简单说明。
1、PC5接口:在无线通信系统中,UE与UE之间可以通过网络进行数据通信,也可以不经过网络设备,直接进行UE与UE之间的通信。UE与UE之间的接口称为PC5接口,类似于UE与接入网设备之间的Uu接口。UE与UE之间的链路称为侧行链路(slidelink,SL),sidelink通信的一个典型应用场景即车与任何事物通信(vehicle to everything,V2X)。在V2X中,每个车即一个UE,UE与UE之间可以通过PC5接口直接进行sidelink通信,而不需要经过网络,这样可以有效地减少通信时延。
具体地,PC5接口可以支持广播、单播、组播等通信方式。本申请中主要涉及单播通信方式,下面简单介绍单播通信。
2、单播通信:单播通信类似于UE与接入网设备之间建立无线资源控制(radio resource control,RRC)连接之后进行的数据通信,需要两个UE之间在先建立单播连接。在建立单播连接之后,两个UE可以基于协商的标识进行数据通信,该数据可以是加密的,也可以是不加密的。相比于广播,在单播通信中,只能是建立了单播连接的两个UE之间才能进行该单播通信。
在单播通信中,UE发送数据时,会随数据发送源标识和目的标识。其中,源标识是发端UE自己分配的,目的标识是对端UE为该单播连接分配的标识。
3、侧行链路UE接入网络(Sidelink UE-to-Network Relay)场景:借助sidelink单播通信,提出一个UE通过另一个UE接入网络,从而实现网络覆盖增强,即Sidelink UE-to-Network Relay技术。在Sidelink UE-to-Network Relay场景下,中间执行中继功能的节点为中继UE,可以称为Relay UE;通过该Relay UE接入网络的节点为远端UE,可以称为Remote UE。需要说明的是,本申请实施例中对于设备的名称不做任何的限定,Relay UE和Remote UE仅仅是为了区分,还可以称为第一设备、第二设备;或者还可以称为第 一节点、第二节点等。
具体地,在Sidelink UE-to-Network Relay场景下,Relay UE与Remote UE之间通过PC5接口连接,Relay UE与接入网设备之间通过Uu接口连接,Remote UE可以通过Relay UE与接入网设备建立连接进行数据传输。下面以层2中继(L2sidelink relay)为例,介绍数据传输时用户面的协议栈和控制面的协议栈。
示例性地,Sidelink UE-to-Network Relay还可以简称为Sidelink U2N relay。
4、协议栈:为了便于理解,结合图2中的(a)和(b)说明Remote UE可以通过Relay UE与接入网设备建立连接进行数据传输时用户面的协议栈和控制面的协议栈。图2中的(a)和(b)是本申请实施例提供的协议栈的示意图,具体地,图2中的(a)所示的为用户面的协议栈;图2中的(b)所示的为控制面的协议栈。
图2中的(a)中包括:
物理(physical,PHY)层(如,图2中的(a)中所示的PC5-PHY和Uu-PHY)、媒体接入控制(media access control,MAC)层(如,图2中的(a)中所示的PC5-MAC和Uu-MAC)、无线链路控制(radio link control,RLC)层(如,图2中的(a)中所示的PC5-RLC和Uu-RLC)、适配(adapt)层(适配层还可以称为侧行链路中继适配协议(Sidelink relay adaptation protocol)层)、分组数据汇聚层协议(packet data convergence protocol,PDCP)层(如,图2中的(a)中所示的Uu-PDCP)、服务数据适配协议(Service Data Adaptation Protocol,SDAP)层(如,图2中的(a)中所示的Uu-SDAP)和互联网协议(Internet Protocol,IP)层。
图2中的(b)中包括:
PHY层(如,图2中的(b)中所示的PC5-PHY和Uu-PHY)、MAC层(如,图2中的(b)中所示的PC5-MAC和Uu-MAC)、RLC层(如,图2中的(b)中所示的PC5-RLC和Uu-RLC)、adapt层、PDCP层(如,图2中的(b)中所示的Uu-PDCP)、无线资源控制(radio resource control,RRC)层(如,图2中的(a)中所示的Uu-RRC)和非接入(non-access stadium,NAS)层。
具体地,Remote UE和Relay UE之间的适配层是为了支持Remote UE的多个Uu-PDCP实体映射到一个SL-RLC实体,即支持Remote UE的Uu数据无线承载(Data Radio Bearer,DRB)与SL DRB之间N:1映射,其中,DRB可以理解为RLC承载或者RLC通道(RLC channel)。
为了支持多个Remote UE通过同一个Relay UE接入网络,在Relay UE和接入网设备之间存在适配层,该适配层中包括Remote UE的标识信息。该Remote UE的标识信息可以是Relay UE分配的,也可以是接入网设备分配的。同时,可能会存在一个Remote UE的多个DRB映射到Relay UE的一个DRB,因此在该适配层中还可以携带Remote UE的DRB标识。
5、缓存状态报告(Buffer Status Report,BSR):UE可以在MAC层的分组数据单元(Packet Data Unit,PDU)中插入一个BSR控制单元向接入网设备上报:某个或某几个逻辑信道组当前有多少数据需要发送,希望分配无线资源或者时频资源。
这种通过发送BSR控制单元的方式,可以让接入网设备知道UE需要发送的数据量,接入网设备可以针对性的分配无线资源或者时频资源。
应理解,UE发送BSR控制单元这个动作本身也是需要上行无线资源或者时频资源的,如果UE没有任何上行无线资源或者时频资源,也是没有办法发送BSR的,那么这个时候UE就需要通过发送上行调度请求(Scheduling Request,SR)向接入网设备发送资源申请。因为BSR是被封装在MAC PDU里的,通过PUSCH信道发送到网侧,因此需要上行无线资源或者时频资源,而SR信号是可以在PUCCH控制信道中传输的,并不需要上行无线资源或者时频资源就可以向网侧发出资源的申请。
6、逻辑信道优先级(LogicalChannelPrioritization,LCP)过程:对于一个UE而言,可能同时存在多个业务,或者多个逻辑信道需要进行传输,则在MAC层UE需要根据接入网设备分配的上行资源,将多个逻辑信道的数据进行复用后传输。每个逻辑信道都对应一个逻辑信道并配置一个逻辑信道优先级,将多个逻辑信道的数据进行复用传输的过程称为LCP过程。
7、侧行链路控制信息(sidelink control information,SCI):也可以称为边链路控制信息。其中,边链路或侧行链路(sidelink,SL)指终端设备之间的传输链路。SCI能够用于指示侧行链路上传输数据的资源位置。
8、Sidelink资源:针对Sidelink通信,UE获取sidelink资源的方式有两种,一种称为Mode1,可以理解为由接入网设备调度分配资源,具体实现方式包括:
由接入网设备通过下行控制信息(downlink control information,DCI)调度;或者由接入网设备通过RRC配置授权配置(configured grant,CG)资源。
其中,接入网设备通过DCI调度方式,需要UE在先通过缓存状态报告(Buffer Status Report,BSR)上报当前SL缓存状态;RRC配置CG资源的方式,需要UE在先通过上行RRC消息向接入网设备上报周期性的业务模型信息。
另一种称为Mode2,可以理解为由UE自己选择。具体的,UE会被配置一个或者多个资源池,在资源池内,UE可以基于规则确定哪些资源可以用,哪些资源不可以用,然后在可用的资源中选择适合当前数据传输需求的资源进行数据发送。
需要说明的是,在Sidelink UE-to-Network Relay场景下,通过上述的Sidelink资源获取方式,Remote UE的上行数据处理过程包括以下步骤:
步骤一:Remote UE将上行数据发送给为其提供中继服务的Relay UE。
作为一种可能的实现方式,Remote UE接入网络的方式如图1中的(a)所示为单路径方式,Remote UE通过上述的Mode2方式获取Sidelink资源,并将上行数据发送给Relay UE。
步骤二:Relay UE收到Remote UE的数据后,数据进入Uu模块,触发Uu BSR。
结合图2中的(a)和(b)所示的协议栈,Relay UE内部显示通过SL模块接收Remote UE的数据,经过处理后,数据进入Uu模块,并且触发Uu接口上的BSR。
可选地,在没有任何上行RB资源的情况下,Relay UE需要先触发SR,再发送BSR。
步骤三:Relay UE接收接入网设备的DCI调度,使用调度的上行资源进行数据传输。
在这过程中,Relay UE需要先进行逻辑信道优先级过程,来选定逻辑信道的数据进行发送。理论上,如果Relay UE服务的Remote UE就只有一个,那该Remote UE的数据就可以用当前调度资源发出去。但如果Relay UE服务的Remote UE有多个,并且其他Remote UE的数据优先级更高,那Relay UE就可能会优先发送这些高优先级的数据。
基于上述过程,由于要经过中间Relay UE的转发,Remote UE的上行数据传输时延会明显增大,导致Remote UE通过Relay UE接入网络时获得的体验并不好。
此外,为了便于理解本申请实施例,做出以下几点说明。
第一,在本申请中,“用于指示”可以包括用于直接指示和用于间接指示。当描述某一指示信息用于指示A时,可以包括该指示信息直接指示A或间接指示A,而并不代表该指示信息中一定包括有A。
待指示信息可以作为一个整体一起发送,也可以分成多个子信息分开发送,而且这些子信息的发送周期和/或发送时机可以相同,也可以不同。具体发送方法本申请不进行限定。其中,这些子信息的发送周期和/或发送时机可以是预先定义的,例如根据协议预先定义的,也可以是发射端设备通过向接收端设备发送配置信息来配置的。其中,该配置信息可以例如但不限于包括无线资源控制信令、媒体接入控制(media access control,MAC)层信令和物理层信令中的一种或者至少两种的组合。其中,无线资源控制信令例如包无线资源控制(radio resource control,RRC)信令;MAC层信令例如包括MAC控制元素(control element,CE);物理层信令例如包括DCI。
第二,在本申请中第一、第二以及各种数字编号(例如,“#1”、“#2”)仅为描述方便进行的区分,并不用来限制本申请实施例的范围。例如,区分不同的信息等。
第三,在本申请中,“预设的”可包括由网络设备信令指示,或者预先定义,例如,协议定义。其中,“预先定义”可以通过在设备(例如,包括终端设备和网络设备)中预先保存相应的代码、表格或其他可用于指示相关信息的方式来实现,本申请对于其具体的实现方式不做限定。
第四,本申请实施例中涉及的“保存”,可以是指的保存在一个或者多个存储器中。所述一个或者多个存储器,可以是单独的设置,也可以是集成在编码器或者译码器,处理器、或通信装置中。所述一个或者多个存储器,也可以是一部分单独设置,一部分集成在译码器、处理器、或通信装置中。存储器的类型可以是任意形式的存储介质,本申请并不对此限定。
第五,本申请实施例中涉及的“协议”可以是指通信领域的标准协议,例如可以包括LTE协议、NR协议以及应用于未来的通信系统中的相关协议,本申请对此不做限定。
第六,本申请实施例中涉及一个信息(如,信息#1)中“包括”另一个信息(如,信息#2),可以理解为该信息#1中显示携带或隐式携带该信息#2,例如,信息#1中直接携带该信息#2;还例如,信息#1中携带指示该信息#2的指示信息,接收该信息#1的接收端设备可以根据该指示信息得到该信息#2,而指示信息用于指示信息#2可以是预定义或协议规定的,或者是显示或隐式的指示。
第七,本申请实施例中涉及的“包括”可以表示“为”的含义,例如,终端设备包括Remote UE可以表示终端设备即为Remote UE;还例如,资源#1包括传输数据使用的资源可以表示资源#1即为传输数据使用的资源。
上文结合图1中的(a)和(b简单介绍了本申请实施例提供通信方法能够应用的场景,以及介绍了本申请实施例中可能涉及到的基本概念,下面将结合附图详细说明本申请实施例提供的通信方法。
由上述的Remote UE的上行数据处理过程可知,目前的Remote UE的上行数据传输 方式,可能会导致Remote UE的上行数据传输时延增大。本申请实施例提供的通信方法,Relay UE通过在Remote UE的上行数据到达之前,提前向接入网设备请求用于传输该上行数据的上行资源,以期达到降低Remote UE的上行数据传输时延的目的。
应理解,下文示出的实施例并未对本申请实施例提供的方法的执行主体的具体结构特别限定,只要能够通过运行记录有本申请实施例的提供的方法的代码的程序,以根据本申请实施例提供的方法进行通信即可,例如,本申请实施例提供的方法的执行主体可以是终端设备或网络设备,或者,是终端设备或网络设备中能够调用程序并执行程序的功能模块。
以下,不失一般性,以网络设备与终端设备之间的交互为例详细说明本申请实施例提供的通信方法。
图3是本申请实施例提供的一种通信方法的示意性流程图。该通信方法可以应用于上文中所示的Sidelink UE-to-Network Relay场景,为了便于描述,下文中以提供中继服务的第二终端设备为Relay UE、远端终端设备为Remote UE、接入网设备为RAN为例进行说明。
需要说明的是,本申请中对于设备(或网元、节点)的名称不做任何的限定。
例如,第二终端设备可以是提供中继服务的设备。该提供中继服务的设备可以是Relay UE,或者还可以是能够实现提供中继服务的其他设备、网元或者节点等。
还例如,第一终端设备可以是需要通过第二终端设备接入网络的设备。可以称为Remote UE,还可以称为远端节点、远端设备等。
又例如,接入网设备可以是为终端设备提供接入网络服务的设备,可以称为RAN还可以称为网络设备或其他名称。
另外,需要说明的是下文中由Relay UE执行的动作可以是Relay UE,或者,还可以是Relay UE中能够调用程序并执行程序的功能模块,或者,还可以是Relay UE中的芯片。本申请实施例中对于执行主体的具体结构不做特别限定,为了便于描述可以以执行主体为Relay UE执行为例进行说明。
同理,下文中Remote UE执行的动作可以是Remote UE,或者,还可以是Remote UE中能够调用程序并执行程序的功能模块,或者,还可以是Remote UE中的芯片。RAN执行的动作可以是RAN,或者,还可以是RAN中能够调用程序并执行程序的功能模块,或者,还可以是RAN中的芯片。
具体地,图3所示的通信方法包括以下步骤:
S310,Remote UE向Relay UE发送第一信息,或者说Relay UE接收来自Remote UE的第一信息。
该第一信息用于确定第一缓存信息,该第一缓存信息用于指示第一数据的大小。
其中,第一数据为Remote UE需要通过Relay UE向RAN发送的数据;或者说第一数据为Remote UE待通过Relay UE向RAN发送的数据。示例性地,第一数据为Remote UE需要发送给RAN的数据,可以称为“上行数据”。
示例性地,第一数据可以理解为PDCP PDU,包括但不限于:数据无线承载(data radio bearer,DRB)的PDCP PDU或信令无线承载(signal radio bearer,SRB)的PDCP PDU。本申请实施例中对于第一数据的具体形式不做限制,可以是Remote UE需要通过Relay UE向RAN发送的任何内容。
示例性地,该第一信息包含于SCI中。
可选地,Remote UE可以通过Relay UE和Remote UE之间的PC5接口发送该第一信息,该第一信息占用Relay UE和Remote UE之间的SL资源。
作为一种可能的实现方式,该实施例中Remote UE通过Relay UE接入网络的方式可以是单路径方式(如图1中的(a)所示的单路径方式)。在该实现方式下,Remote UE可以基于上文中介绍的Mode2方式获取SL资源,该SL资源用于向Relay UE发送上行数据。
作为另一种可能的实现方式,该实施例中Remote UE通过Relay UE接入网络的方式可以是多路径方式,例如双路径方式(如图1中的(b)所示的双路径方式)。在该实现方式下,Remote UE可以基于上文中介绍的Mode1或Mode2方式获取SL资源,该SL资源用于向Relay UE发送上行数据。
应理解,该实施例对于Remote UE如何获取SL资源不做限定,可以是上文中介绍的Mode1或Mode2方式。
进一步地,Relay UE接收到第一信息之后能够根据该第一信息确定第一缓存信息,图3所示的方法流程还包括:
S320,Relay UE确定第一缓存信息。
具体地,根据第一信息的具体形式不同Relay UE确定第一缓存信息包括以下两种方式:
方式一:第一信息为隐式的用于确定第一缓存信息的信息。
在该方式一下,Remote UE向Relay UE发送第一信息,包括:Remote UE向Relay UE发送消息,该消息中包括上述的第一信息和第二数据。可以理解为,Remote UE在向第一终端发送当前数据(第二数据)的时候,同时向Relay UE发送第一信息。
具体地,第一信息包括所述Remote UE向所述Relay UE发送所述第一数据使用的第一侧行链路SL资源信息,该第一SL资源信息用于确定上述的第一缓存信息。
例如,Relay UE根据第一SL资源信息指示的SL资源大小估计第一数据的大小,从而确定所述第一缓存信息。
可选地,所述第一SL资源信息包括重传所述第二数据的SL资源信息和/或预留的用于新传数据的SL资源信息。则Relay UE根据所述重传所述第二数据的SL资源大小和/或所述预留的用于新传数据的SL资源大小确定所述第一缓存信息。
示例性地,在该方式一下,上述的第一数据可以是重传的第二数据。
例如,Relay UE在接收到第二数据的时候可能未能成功解码得到该第二数据,但是Relay UE根据第一信息中包括重传所述第二数据的SL资源信息的指示的重传资源,预计下次能够成功解码得到该第二数据。并且,Relay UE基于重传所述第二数据的SL资源信息指示的重传资源大小以及调制编码方案(Modulation and Coding Scheme,MCS),可以估计出成功解码出来的重传的第二数据大小,从而确定第一缓存信息。
示例性地,在方式一下,上述的第一数据可以是待传输的新传的数据。
例如,Relay UE可以根据预留的用于新传数据的SL资源信息确定预留的用于新传数据的SL资源,估计在接收到该第一信息的t时之后,Relay UE从Remote UE接收到新传数据,并且Relay UE基于预留的用于新传数据的SL资源信息指示的预留的用于新传数据 的SL资源大小估计第二数据大小,从而确定第一缓存信息。
可选地,在方式一下,第一SL资源信息还可以用于指示第一SL资源的时域位置,Relay UE可以根据第一SL资源信息确定第一时间信息,所述第一时间信息用于指示所述Relay UE接收到所述第一数据的时刻或者发送所述第一数据的时刻。
例如,Relay UE根据第一SL资源信息指示的SL资源的时域位置间接确定第一数据到达的时刻,或者进一步地根据第一数据到达时刻和本地处理时间估计发送第一数据的时刻。
第一SL资源信息还可以用于指示重传所述第二数据的SL资源时域位置和/或所述预留的用于新传数据的SL资源时域位置,Relay UE可以根据重传所述第二数据的SL资源时域位置和/或所述预留的用于新传数据的SL资源时域位置确定第一时间信息。
另外,除了上述的方式一所示的第一信息为隐式的用于确定第一缓存信息的信息之外,第一信息还可以是显示的用于确定第一缓存信息的信息,如下述的方式二。
方式二:第一信息为显示的用于确定第一缓存信息的信息。
在该方式二下,所述第一信息包括所述第一数据的第二缓存信息,所述第二缓存信息用于指示所述第一数据对应的第一逻辑信道组(或者说第一逻辑信道组粒度)的缓存信息;
所述Remote UE根据所述第一信息确定所述第一缓存信息,包括:所述Remote UE根据所述第二缓存信息和第一对应关系确定所述第一数据对应的第二逻辑信道组粒度的缓存信息,所述第二逻辑信道组(或者说第二逻辑信道组粒度)的缓存信息为所述第一缓存信息,其中,所述第一对应关系为所述第一逻辑信道组和第二逻辑信道组的对应关系,所述第一逻辑信道组为所述Relay UE和所述Remote UE之间的逻辑信道组,所述第二逻辑信道组为所述Relay UE和所述RAN之间的逻辑信道组。
第一逻辑信道组和第二逻辑信道组的对应关系,包括:
第一逻辑信道组和第二逻辑信道组一一对应。
例如,第一逻辑信道组#1和第二逻辑信道组#1相对应,其中,第一逻辑信道组#1的缓存信息指示第一逻辑信道组#1的缓存为10M,则第二逻辑信道组#1的缓存为10M。
第一逻辑信道组和第二逻辑信道组多对一。
例如,第一逻辑信道组#1和第一逻辑信道组#2与第二逻辑信道组#1相对应,其中,第一逻辑信道组#1的缓存信息指示第一逻辑信道组#1的缓存为10M,第一逻辑信道组#2的缓存信息指示第一逻辑信道组#2的缓存为10M,则第二逻辑信道组#1的缓存为20M。
应理解,上述只是举例说明第一逻辑信道组和第二逻辑信道组存在对应关系,对本申请的保护范围不构成任何的限定,其他的能够根据第一逻辑信道组的第二缓存信息确定第二逻辑信道组的第一缓存信息的方式也在本申请的保护范围之内。
示例性地,第一对应关系为RAN向Relay UE指示的;或者,第一对应关系为RAN和Remote UE联合向Relay UE指示的;或者,第一对应关系为预设的。
可选地,在方式二下,所述第一信息中还包括第二时间信息,所述第二时间信息用于向Relay UE指示所述Relay UE接收到所述第一数据的时刻或者发送所述第一数据的时刻。
由于该第二时间信息是第一终端设备向第二终端设备发送的,所述第二时间信息由所述Relay UE和所述Remote UE之间的第一通信接口上的时间单元的标号标识。
进一步地,第二终端设备可以在接收到显示指示第一数据的第二时间信息之后,可以 将该第二时间信息转换为RAN能够识别的第一时间信息,以便于向RAN指示第一终端设备接收到该第一数据的时刻或者发送该第一数据的时刻。
具体地,Relay UE根据第二对应关系和所述第二时间信息确定第一时间信息,所述第一时间信息用于向RAN指示所述Relay UE接收到所述第一数据的时刻或者发送所述第一数据的时刻,所述第一时间信息由所述Remote UE和所述RAN之间的第二通信接口上的时间单元的标号标识。
其中,所述第二对应关系为第一定时信息和第二定时信息之间的对应关系,所述第一定时信息为所述Relay UE和所述Remote UE之间的第一通信接口的定时信息,所述第二定时信息为所述Relay UE和所述RAN之间的第二通信接口的定时信息。
可选地,在考虑到第一定时信息和第二定时信息之间不对齐的情况,在根据第二对应关系和所述第二时间信息确定第一时间信息的时候,可以增加一个偏置值。
例如,上述的第二时间信息由第一通信接口上的slot标识,第一时间信息由第二通信接口上的slot标识,但是Relay UE在将第一通信接口上的slot边界对齐到第二通信接口上时,可能会出现第二通信接口上没有一个slot的边界和该第一通信接口上slot边界对齐的情况,在该情况下需要考虑增加一个偏置值(offset)完成对齐。
需要说明的是,本申请实施例中时间单元可以是帧、子帧、slot等,时间单元的标号可以是帧号、子帧号、slot号等。
示例性地,第二对应关系为Relay UE确定的。
在Relay UE确定上述的第一缓存信息之后,并在接收到第一数据之前,可以向RAN请求用于传输该第一数据的第一资源,图3所示的方法流程还包括:
S330,Relay UE向RAN发送第一请求信息,或者说RAN接收来自Relay UE的第一请求信息。
该第一请求信息用于请求第一资源。具体地,该第一请求信息中包括第一缓存信息,以便于RAN能够基于该第一缓存信息确定配置的第一资源的大小。
可选地,该第一请求信息的功能和BSR的功能类似。可以将第一请求信息称为pre-BSR。
Relay UE接收到来自Remote UE的第一数据之前向RAN发送第一请求信息,可以是Relay UE根据第一信息(如,SL资源信息)确定接收第一数据的时刻x,在x时刻之前向RAN发送第一请求信息。
由上述步骤S320可知:Relay UE还可以根据第一信息确定第一时间信息,在Relay UE确定有第一时间信息的情况下,该第一请求信息中还包括所述第一时间信息。
需要说明的是,Relay UE向RAN发送的第一时间信息所指示的时刻需要是在重传资源或者新传资源之后(如,间隔时长t),目的是为了让Relay UE能够有时间对第一数据进行处理,参考上文中基本概念中所介绍的协议栈(如图2中的(a)和(b)所示),Relay UE从PC5接收到数据后,到数据进入Uu模块可以发送,这中间需要经过相关协议栈的处理,这些处理会需要一些时间。
为了便于理解,结合图4介绍第一时间信息所指示的时刻和第一信息所指示的资源时域位置的关系。图4是本申请实施例提供的一种第一时间信息所指示的时刻和第一信息所指示的资源时域位置的示意图。
从图4中可以看出,在第一信息指示的重传资源时域位置终止时刻为t1时刻时,第一时间信息所指示的时刻为t2时刻,t1时刻和t2时刻之间间隔时长为T1;和/或,
在第一信息指示的传输资源时域位置终止时刻为t3时刻时,第一时间信息所指示的时刻为t4时刻,t3时刻和t4时刻之间间隔时长为T2。
从上文中介绍的应用场景可知,本申请实施例中Relay UE可以为多个Remote UE提供中继服务。即考虑一个Relay UE可能会为多个Remote UE服务,此时在第一请求信息中还可以携带Remote UE的指示信息(如,Remote UE的标识信息),用于指示当前该第一请求信息是为哪个Remote UE的上行数据触发的。
另外,RAN还可以向Relay UE发送配置信息,该配置信息用于指示Relay UE可以为哪个(或者哪些)Remote UE向RAN发送上述的第一请求信息,图3所示的方法流程还包括:
S331,Relay UE接收来自RAN的配置信息,或者说RAN向Relay UE发送配置信息。
配置信息用于指示所述Relay UE能够为至少一个终端设备发送所述第一请求信息,所述至少一个终端设备包括所述Remote UE。
进一步地,RAN接收到上述的第一请求信息之后,可以通过DCI指示第一上行资源,图3所示的方法流程还包括:
S340,Relay UE接收来自RAN的第一DCI,或者说RAN向Relay UE发送第一DCI。
该第一DCI用于指示第一资源,
可选地,该第一DCI中包括第一指示信息,所述第一指示信息用于指示所述第一资源用于传输所述Remote UE的上行数据。
S350,Relay UE接收来自Remote UE的第一数据,或者说Remote UE向Relay UE发送第一数据。
可选的,步骤S340和步骤S350的执行时间先后顺序不定,即Relay UE可能是先收到Remote UE发送的上行数据,也可能是先收到RAN发送的DCI。但DCI调度的第一上行资源在时域上的位置,需要在Relay UE接收到第一数据之后。
作为一种可能的实现方式,可以通过在第一请求信息中携带第一时间信息,以便于RAN通过DCI调度的第一上行资源在Relay UE接收到第一数据之后。
例如,第一时间信息指示Relay UE接收到第一数据的时刻为tr,入网设备通过DCI调度的第一上行资源在时域上的位置在tr之后。
作为另一种可能的实现方式,可以通过控制发送第一请求信息的时间,以便于RAN通过DCI调度的第一上行资源在Relay UE接收到第一数据之后。
例如,Relay UE估计可能在tr时刻接收到第一数据,并估计发送第一请求信息的时长tb之后可能会接收到DCI调度的第一上行资源,可以控制发送第一请求信息的tb时长之后的时刻在tr时刻之后,以达到RAN通过DCI调度的第一上行资源在Relay UE接收到第一数据之后的目的。
进一步地,Relay UE向RAN发送第一数据,图3所示的方法流程还包括:
S360,Relay UE向RAN发送第一数据,或者说RAN接收来自Relay UE的第一数据。
可选的,考虑Relay UE可能也有自己的业务数据要发,这时候可能会出现一种情况是Relay UE是为Remote UE触发的第一请求信息,但在RAN调度的第一上行资源到达之 前,Relay UE产生了自己的业务数据。如果Relay UE自己的业务数据具有更高优先级,那Relay UE就可能会用RAN调度的第一上行资源先发自己的业务数据。而这跟RAN调度的本意可能并不相符。
为了解决这个问题,在本实施例中可以考虑在调度第一上行资源的时候,RAN可以在DCI增加指示信息,指示该上行资源用于Remote UE的上行数据。进一步的,还可以指示该上行资源用于哪个Remote UE的上行数据,如,DCI中包括第一指示信息,第一指示信息用于指示所述第一上行资源用于传输所述Remote UE的上行数据。
针对被指示了用于Remote UE或者特定Remote UE的上行资源,Relay UE在执行LCP的时候,就只考虑那些承载Remote UE数据的逻辑信道,而不考虑Relay UE自己数据对应的逻辑信道。
图3所示的方法流程通过在接收第一数据之前,提前向RAN请求用于传输数据的上行资源,能够降低Remote UE通过Relay UE向RAN发送数据的时延。本申请还提供另一种通信方法,能够降低Remote UE通过Relay UE向RAN发送数据的时延,下面将结合图5进行说明。
图5是本申请实施例提供的另一种通信方法的示意性流程图。该通信方法可以应用于上文中所示的Sidelink UE-to-Network Relay场景,包括以下步骤:
步骤一:Relay UE接收资源指示信息。
该资源指示信息用于指示第二资源,所述第二资源与第二SL资源相对应,所述第二SL资源为所述Remote UE向所述Relay UE发送所述第三数据使用的资源。
其中,第三数据为Remote UE需要通过Relay UE向RAN发送的数据;或者说第三数据为Remote UE待通过Relay UE向RAN发送的数据。
具体地,Relay UE接收资源指示信息包括以下两种方式:
方式一:Relay UE接收来自RAN的资源指示信息。在该方式一下图5所示的方法流程包括:
S511,RAN向Relay UE发送第二DCI,或者说Relay UE接收来自RAN的第二DCI。
该第二DCI用于指示所述第二资源和所述第二SL资源。可以理解为RAN通过一个第二DCI同时调度第二SL资源和第二资源,并且该第二DCI可以同时被Relay UE和Remote UE接收到,从而Remote UE用第二DCI中指示的第二SL资源向Relay UE发送第三数据,Relay UE则使用第二DCI中指示的第二上行资源向RAN发送从Remote UE收到的第三数据。Relay UE无需在接收到第三数据之后,向RAN请求用于传输第三数据的资源,从而能够降低Remote UE通过Relay UE向RAN发送数据的时延。
S512,RAN向Remote UE发送第二DCI,或者说Remote UE接收来自RAN的第二DCI。
示例性地,RAN可以是在从Remote UE收到SL BSR之后发送的该第二DCI。该SL BSR包含第二指示信息,第二指示信息用于指示Remote UE需要给Relay UE发送的第三数据的缓存大小信息。
具体地,Remote UE和Relay UE都会用在先配置的第一标识监听对应的物理信道,从而接收RAN发送的该第二DCI。为了使得Relay UE和Remote UE能够成功解析该同时调度第二SL资源和第二上行资源的DCI,该方式一下,图5所示的方法流程还包括:
S513,RAN向Relay UE发送第一标识。
第一标识用于接收所述第二DCI,该第一标识可以用于接收该第二DCI可以理解为Relay UE可以用该第一标识进行第二DCI解扰,对应的,RAN在向Relay UE发送该第二DCI的时候,会用该第一标识进行加扰。
具体地,Relay UE根据所述第二DCI确定使用所述第二上行资源发送从所述第二SL资源上接收到的所述第三数据。
应理解,该方式一下,RAN可以为Relay UE配置两个标识,其中一个标识用于接收传统的DCI(即调度下行资源的DCI),另一个标识(如,第一标识)用于接收该实施例中的DCI(即同时调度第二SL资源和第二资源的第二DCI)。
S514,RAN向Remote UE发送第一标识。
第一标识用于接收所述第二DCI,该第一标识可以用于接收该第二DCI可以理解为Remote UE可以用该第一标识进行第二DCI解扰,对应的,RAN在向Remote UE发送该第二DCI的时候,会用该第一标识进行加扰。
具体地,Remote UE根据所述DCI确定使用第二SL资源向Relay UE发送第三数据。
应理解,该方式一下,RAN可以为Remote UE配置两个标识,其中一个标识用于接收传统的DCI(即调度第二SL资源的DCI),另一个标识(如,第一标识)用于接收该实施例中的DCI(即同时调度第二SL资源和第二资源的第二DCI)。
需要说的是,对于RAN来说上述步骤S511、步骤S512可以理解为同一个步骤,即对于RAN来说下发同一个DCI(如上述的第二DCI),该DCI可以被Remote UE和Relay UE接收到。
另外,需要说明的是,方式一下RAN向Relay UE和Remote UE发送的用于联合调度第二SL资源和第二资源的DCI可以不同,并且RAN向Relay UE和Remote UE发送用于接收DCI的标识也可以不同。
例如,RAN向Relay UE发送DCI#1,该DCI#1用于联合调度第二SL资源和第二资源。RAN向Relay UE发送标识#1,该标识#1用于接收DCI#1。
RAN向Remote UE发送DCI#2,该DCI#2用于联合调度第二SL资源和第二资源。RAN向Relay UE发送标识#2,该标识#2用于接收DCI#2。
进一步地,Remote UE接收到上述的第二DCI之后,可以向Relay UE发送第三数据,图5所示的方法流程还包括:
S515,Remote UE向Relay UE发送第三数据。
考虑到Remote UE可能除了与Relay UE之间存在SL通信外,还有其他的SL通信需求,此时为了保证RAN当前调度第二SL资源不会被用作其他SL通信需求,针对第二DCI调度的第二SL资源,Remote UE在执行LCP时,优先考虑与Relay UE之间通信的这个SL单播连接。
S516,Relay UE向RAN发送第三数据。
Relay UE根据所述第二DCI确定使用所述第二资源发送从所述第二SL资源上接收到的所述第三数据。
具体地,所述Relay UE从所述第二SL资源解析得到所述第三数据,确定所述第三数据对应的逻辑信道;在所述第二上行资源上进行逻辑信道优先级LCP过程时,将所述第 三数据对应的逻辑信道的优先级设置为最高优先级,其中,所述第三数据对应的逻辑信道为所述Relay UE和所述RAN之间的逻辑信道。可以理解为这时候优先发送所述第三数据。
方式二:Relay UE接收来自Remote UE的资源指示信息。在该方式二下图5所示的方法流程包括:
S521,Relay UE接收来自Remote UE的第一消息。
第一消息中包括所述第三数据和所述资源指示信息。
作为一种可能的实现方式,第三数据和资源指示信息同时发送;或者第三数据晚于资源指示信息发送。
需要说明的是,在方式二下,Remote UE获知第二资源的方式可以是RAN向Remote UE联合调度了第二资源和第二SL资源,图5所示的方法流程还包括:
S522,RAN向Remote UE发送第二DCI,或者说Remote UE接收来自RAN的第二DCI。
参考上述S512的描述,这里不再赘述。
与方式一不同的是:Remote UE收到第二DCI之后,确定第二SL资源,并用该第二SL资源向Relay UE发送第三数据,Remote UE还需要将第二DCI中携带的第二资源的资源指示信息一起发给Relay UE。
可选的,该资源指示信息可以携带于第二级SCI中发给Relay UE。其中,SCI包括第一级SCI和第二级SCI。第一级SCI中包括的内容和第二级SCI中包括的内容不一样,例如第一级SCI中包括源地址、目的地址、物理侧行链路共享信道(Physical sidelink shared channel,PSSCH)资源位置等信息,第二级SCI中包括HARQ信息等,并且第一级SCI承载于物理侧行链路控制信道(Physical sidelink control channel,PSCCH)中,第二级SCI承载于PSSCH中。一般来说扩展的信息(如,上述的资源指示信息可)可以放在第二级SCI中。
需要说明的是,方式二下因为第二DCI发给Remote UE即可,不需要以组播的方式同时发给Remote UE和Relay UE,所以Remote UE可以用现有的标识去解,不需要引入新的标识,所以RAN为Remote UE提供的配置与目前SL通信配置类似,并不需要为Remote UE配置标识用于解析第二DCI。
另外,Relay UE不需要解析联合调度第二SL资源和第二资源的第二DCI,所以RAN为Relay UE提供的配置与目前Uu通信类似,例如现有的Uu物理信道配置等,并不需要为Relay UE配置标识用于解析新引入的第二DCI。
S523,Relay UE向RAN发送第三数据。
Relay UE从Remote UE收到第三数据和资源指示信息后,确定使用第二资源发送该第三数据。
具体地,所述Relay UE从所述第二SL资源解析得到所述第三数据,确定所述第三数据对应的逻辑信道;在所述第二上行资源上进行逻辑信道优先级LCP过程时,将所述第三数据对应的逻辑信道的优先级设置为最高优先级,其中,所述第三数据对应的逻辑信道为所述Relay UE和所述RAN之间的逻辑信道。
应理解,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。
还应理解,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。
还应理解,在上述一些实施例中,主要以现有的网络架构中的设备为例进行了示例性说明(如网络设备、终端设备等等),应理解,对于设备的具体形式本申请实施例不作限定。例如,在未来可以实现同样功能的设备都适用于本申请实施例。
可以理解的是,上述各个方法实施例中,由设备(如网络设备、终端设备)实现的方法和操作,也可以由设备的部件(例如芯片或者电路)实现。
以上,结合图3和图5详细说明了本申请实施例提供的通信方法。上述通信方法主要从各个网元之间交互的角度进行了介绍。可以理解的是,各个网元,为了实现上述功能,其包含了执行各个功能相应的硬件结构和/或软件模块。
本领域技术人员应该可以意识到,结合本文中所公开的实施例描述的各示例的单元及算法步骤,本申请能够以硬件或硬件和计算机软件的结合形式来实现。某个功能究竟以硬件还是计算机软件驱动硬件的方式来执行,取决于技术方案的特定应用和设计约束条件。专业技术人员可以对每个特定的应用来使用不同方法来实现所描述的功能,但是这种实现不应认为超出本申请的范围。
以下,结合图6和图7详细说明本申请实施例提供的中继通信的装置。应理解,装置实施例的描述与方法实施例的描述相互对应,因此,未详细描述的内容可以参见上文方法实施例,为了简洁,部分内容不再赘述。
本申请实施例可以根据上述方法示例对发射端设备或者接收端设备进行功能模块的划分,例如,可以对应各个功能划分各个功能模块,也可以将两个或两个以上的功能集成在一个处理模块中。上述集成的模块既可以采用硬件的形式实现,也可以采用软件功能模块的形式实现。需要说明的是,本申请实施例中对模块的划分是示意性的,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。下面以采用对应各个功能划分各个功能模块为例进行说明。
图6是本申请实施例提供的装置600的示意性框图。该装置600包括收发单元610和处理单元620。收发单元610可以实现相应的通信功能,处理单元620用于进行数据处理。收发单元610还可以称为通信接口或通信单元,收发单元610实现获取信息功能的情况下,还可以称为获取单元。
可选地,该装置600还可以包括存储单元,该存储单元可以用于存储指令和/或数据,处理单元620可以读取存储单元中的指令和/或数据,以使得装置实现前述方法实施例。
该装置600可以用于执行上文方法实施例中设备(如上述第一终端设备、第二终端设备和接入网设备)所执行的动作,这时,该装置600可以为设备或者为可配置于设备的部件,收发单元610用于执行上文方法实施例中设备的收发相关的操作,处理单元620用于执行上文方法实施例中设备处理相关的操作。
作为一种设计,该装置600用于执行上文方法实施例中第二终端设备所执行的动作。具体地,分别针对上述图3和图5所示的通信方法该装置600用于执行上文方法实施例中第二终端设备所执行的动作,包括以下两种可能:
作为一种可能:
收发单元610,用于接收来自第一终端设备的第一信息;
处理单元620,用于根据该第一信息确定第一数据的第一缓存信息,该第一缓存信息用于指示该第一数据的大小;
收发单元610,还用于在接收到来自该第一终端设备的该第一数据之前,向接入网设备发送第一请求消息,该第一请求信息中包括该第一缓存信息,该第一请求信息用于请求第一资源,
其中,该第一数据包括该第一终端设备待通过第二终端设备向该接入网设备发送的数据,该第一终端设备包括通过该第二终端设备接入该接入网设备的终端设备,该第一资源包括该第二终端设备向该接入网设备发送该第一数据使用的资源。
可选地,该第一信息包括该第一终端设备向该第二终端设备发送该第一数据使用的第一侧行链路SL资源信息。
可选地,处理单元620,还用于根据该第一SL资源信息确定第一时间信息,该第一时间信息用于指示该第一终端设备接收到该第一数据的时刻或者发送该第一数据的时刻。
可选地,该第一SL资源信息包括重传数据的SL资源信息和/或预留的用于新传数据的SL资源信息。
可选地,该第一信息中包括该第一数据的第二缓存信息,该第二缓存信息用于指示该第一数据对应的第一逻辑信道组的缓存信息,其中,该第一逻辑信道组为该第一终端设备和该第二终端设备之间的逻辑信道组。
可选地,处理单元620,还用于根据该第二缓存信息和第一对应关系确定该第一数据对应的第二逻辑信道组的该第一缓存信息,其中,该第一对应关系为该第一逻辑信道组和第二逻辑信道组的对应关系,该第二逻辑信道组为该第一终端设备和该接入网设备之间的逻辑信道组。
可选地,该第一信息中还包括第二时间信息,该第二时间信息用于向该第二终端设备指示该第二终端设备接收到该第一数据的时刻或者发送该第一数据的时刻。
可选地,处理单元620,还用于根据该第二时间信息和第二对应关系确定第一时间信息,该第一时间信息用于向该接入网设备指示该第一终端设备接收到该第一数据的时刻或者发送该第一数据的时刻,其中,该第二对应关系为第一定时信息和第二定时信息之间的对应关系,该第一定时信息为该第一终端设备和该第二终端设备之间的第一通信接口的定时信息,该第二定时信息为该第一终端设备和该接入网设备之间的第二通信接口的定时信息。
可选地,收发单元610,用于接收来自该接入网设备的配置信息,该配置信息用于指示具有为至少一个终端设备发送该第一请求信息的能力,该至少一个终端设备包括该第一终端设备。
可选地,收发单元610,用于接收来自该接入网设备的第一下行控制信息DCI,该第一DCI用于指示该第一资源。
可选地,该第一DCI中包括第一指示信息,该第一指示信息用于指示该第一资源用于传输该第一终端设备的上行数据。
作为另一种可能:
收发单元610,用于接收资源指示信息,该资源指示信息用于指示第二资源;
收发单元610,还用于使用该第二资源向接入网设备发送第三数据,
其中,该第三数据包括第一终端设备待通过第二终端设备向该接入网设备发送的数据,该第一终端设备包括通过该第二终端设备接入该接入网设备的终端设备,该第二资源与第二侧行链路SL资源相对应,该第二SL资源为该第一终端设备向该第二终端设备发送该第三数据使用的资源。
可选地,收发单元610,还用于在接收到来自该第一终端设备的该第三数据之前,接收来自该接入网设备的第二下行控制信息DCI,该第二DCI用于指示该第二资源和该第二SL资源。
可选地,收发单元610,还用于接收来自该接入网设备的第一标识,该第一标识用于接收该第二DCI。
可选地,处理单元620,用于根据该第二DCI确定使用该第二资源发送从该第二SL资源上接收到的该第三数据。
可选地,收发单元610,还用于接收来自该第一终端设备的第一消息,该第一消息中包括该第三数据和该资源指示信息。
可选地,处理单元620,用于根据该第三数据和该资源指示信息确定使用该第二资源发送该第三数据。
可选地,处理单元620,用于从该第二SL资源解析得到该第三数据,确定该第三数据对应的逻辑信道;
在该第二资源上进行逻辑信道优先级LCP过程时,将该第三数据对应的逻辑信道的优先级设置为最高优先级,
其中,该第三数据对应的逻辑信道为该第二终端设备和该接入网设备之间的逻辑信道。
该装置600可实现对应于根据本申请实施例的方法实施例中的第二终端设备执行的步骤或者流程,该装置600可以包括用于执行方法实施例中的第二终端设备执行的方法的单元。并且,该装置600中的各单元和上述其他操作和/或功能分别为了实现方法实施例中的第二终端设备中的方法实施例的相应流程。
其中,当该装置600用于执行图3中的方法时,收发单元610可用于执行方法中的收发步骤,如步骤S310、S331、S330、S340、S350和S360;处理单元620可用于执行方法中的处理步骤,如步骤S320。
当该装置600用于执行图5中的方法时,收发单元610可用于执行方法中的收发步骤,如步骤S511、S512、S513、S514、S515、S516、S521、S522、S523、S524;处理单元620可用于执行方法中的处理步骤。
应理解,各单元执行上述相应步骤的具体过程在上述方法实施例中已经详细说明,为了简洁,在此不再赘述。
作为另一种设计,该装置600用于执行上文方法实施例中第一终端设备所执行的动作。具体地,分别针对上述图3和图5所示的通信方法该装置600用于执行上文方法实施例中第一终端设备所执行的动作,包括以下两种可能:
作为一种可能:
处理单元620,用于根据待通过第二终端设备向接入网设备发送的第一数据确定第一 信息,该第一信息用于确定第一缓存信息,该第一缓存信息用于指示该第一数据的大小;
收发单元610,用于向第二终端设备发送该第一信息。
可选地,该第一信息包括该第一终端设备向该第二终端设备发送该第一数据使用的第一侧行链路SL资源信息。
可选地,该第一SL资源信息包括重传数据的SL资源信息和/或预留的用于新传数据的SL资源信息。
可选地,该第一信息中包括该第一数据的第二缓存信息,该第二缓存信息用于指示该第一数据对应的第一逻辑信道组的缓存信息,其中,该第一逻辑信道组为该第一终端设备和该第二终端设备之间的逻辑信道组。
可选地,该第一信息中还包括第二时间信息,该第二时间信息用于向该第二终端设备指示该第二终端设备接收到该第一数据的时刻或者发送该第一数据的时刻。
作为另一种可能:
收发单元610,用于接收来自接入网设备的第二下行控制信息DCI,该第二DCI用于指示第二资源和第二侧行链路SL资源;
收发单元610,用于使用该第二SL资源向第一终端设备发送第三数据,
其中,该第三数据包括第一终端设备待通过第二终端设备向接入网设备发送的数据,该第一终端设备包括通过该第二终端设备接入该接入网设备的终端设备,该第二资源与第二侧行链路SL资源相对应,该第二资源为该第二终端设备向该接入网设备发送该第三数据使用的资源。
可选地,收发单元610,用于向该第一终端设备发送资源指示信息,该资源指示信息用于指示该第二资源。
可选地,收发单元610,用于接收来自该接入网设备的第一标识,该第一标识用于接收该第二DCI。
该装置600可实现对应于根据本申请实施例的方法实施例中的第一终端设备执行的步骤或者流程,该装置600可以包括用于执行方法实施例中的第一终端设备执行的方法的单元。并且,该装置600中的各单元和上述其他操作和/或功能分别为了实现方法实施例中的第一终端设备中的方法实施例的相应流程。
其中,当该装置600用于执行图3中的方法时,收发单元610可用于执行方法中的收发步骤,如步骤S310和S350;处理单元620可用于执行方法中的处理步骤,如步骤S430。
当该装置600用于执行图5中的方法时,收发单元610可用于执行方法中的收发步骤,如步骤S512、S514、S515、S516、S521、S522、S523;处理单元620可用于执行方法中的处理步骤。
应理解,各单元执行上述相应步骤的具体过程在上述方法实施例中已经详细说明,为了简洁,在此不再赘述。
作为又一种设计,该装置600用于执行上文方法实施例中接入网设备所执行的动作。具体地,分别针对上述图3和图5所示的通信方法该装置600用于执行上文方法实施例中接入网设备所执行的动作,包括以下两种可能:
作为一种可能:
收发单元610,用于接收来自第二终端设备的第一请求信息,该第一请求信息中包括 第一缓存信息,该第一请求信息用于请求第一资源,该第一缓存信息用于指示第一数据的大小;
收发单元610,用于向该第二终端设备发送第一下行控制信息DCI,该第一DCI用于指示该第一资源,
其中,该第一数据包括第一终端设备待通过该第二终端设备向接入网设备发送的数据,该第一终端设备包括通过该第二终端设备接入该接入网设备的终端设备,该第一资源包括该第二终端设备向该接入网设备发送该第一数据使用的资源。
可选地,该第一请求信息中还包括第一时间信息,该第一时间信息用于指示该第一终端设备接收到该第一数据的时刻或者发送该第一数据的时刻。
可选地,该第一DCI中包括第一指示信息,该第一指示信息用于指示该第一资源用于传输该第一终端设备的上行数据。
作为另一种可能:
处理单元620,用于确定第二资源和第二侧行链路SL资源,该第二资源与该第二SL资源相对应,该第二资源为第二终端设备向接入网设备发送第三数据使用的资源,该第二SL资源为第一终端设备向该第二终端设备发送该第三数据使用的资源;
收发单元610,用于向该第一终端设备发送第二下行控制信息DCI,该第二DCI用于指示该第二资源和该第二SL资源,
其中,该第一终端设备为通过该第二终端设备接入该接入网设备的终端设备。
可选地,收发单元610,用于向该第一终端设备发送第一标识,该第一标识用于接收该第二DCI。
可选地,收发单元610,用于向该第二终端设备发送第一标识,该第一标识用于接收该第二DCI。
可选地,收发单元610,用于向该第二终端设备发送该第二DCI。
该装置600可实现对应于根据本申请实施例的方法实施例中的接入网设备执行的步骤或者流程,该装置600可以包括用于执行方法实施例中的接入网设备执行的方法的单元。并且,该装置600中的各单元和上述其他操作和/或功能分别为了实现方法实施例中的接入网设备中的方法实施例的相应流程。
其中,当该装置600用于执行图3中的方法时,收发单元610可用于执行方法中的收发步骤,如步骤S331、S330、S340和S360;处理单元620可用于执行方法中的处理步骤。
当该装置600用于执行图5中的方法时,收发单元610可用于执行方法中的收发步骤,如步骤S511、S512、S513、S514、S516、S522、S523、S524;处理单元620可用于执行方法中的处理步骤。
应理解,各单元执行上述相应步骤的具体过程在上述方法实施例中已经详细说明,为了简洁,在此不再赘述。
上文实施例中的处理单元620可以由至少一个处理器或处理器相关电路实现。收发单元610可以由收发器或收发器相关电路实现。存储单元可以通过至少一个存储器实现。
如图7所示,本申请实施例还提供一种装置700。该装置700包括处理器710,还可以包括一个或多个存储器720。处理器710与存储器720耦合,存储器720用于存储计算机程序或指令和/或数据,处理器710用于执行存储器720存储的计算机程序或指令和/或 数据,使得上文方法实施例中的方法被执行。可选地,该装置700包括的处理器710为一个或多个。
可选地,该存储器720可以与该处理器710集成在一起,或者分离设置。
可选地,如图7所示,该装置700还可以包括收发器730,收发器730用于信号的接收和/或发送。例如,处理器710用于控制收发器730进行信号的接收和/或发送。
作为一种方案,该装置700用于实现上文方法实施例中由设备(如上述第一终端设备、第二终端设备和接入网设备)执行的操作。
本申请实施例还提供一种通信系统,其包括前述的第一终端设备、第二终端设备和接入网设备。
本申请还提供了一种计算机可读存储介质,该计算机可读存储介质中存储有指令,当该指令在计算机上运行时,使得计算机执行上述如图3和图5所示的方法中第一终端设备执行的各个步骤。
本申请还提供了一种计算机可读存储介质,该计算机可读存储介质中存储有指令,当该指令在计算机上运行时,使得计算机执行上述如图3和图5所示的方法中第二终端设备执行的各个步骤。
本申请还提供了一种计算机可读存储介质,该计算机可读存储介质中存储有指令,当该指令在计算机上运行时,使得计算机执行上述如图3和图5所示的方法中接入网设备执行的各个步骤。
本申请还提供了一种包含指令的计算机程序产品,当该计算机程序产品在计算机上运行时,使得计算机执行如图3和图5所示的方法中第二终端设备执行的各个步骤。
本申请还提供了一种包含指令的计算机程序产品,当该计算机程序产品在计算机上运行时,使得计算机执行如图3和图5所示的方法中第一终端设备执行的各个步骤。
本申请还提供了一种包含指令的计算机程序产品,当该计算机程序产品在计算机上运行时,使得计算机执行如图3和图5所示的方法中接入网设备执行的各个步骤。
本申请还提供一种芯片,包括处理器。该处理器用于读取并运行存储器中存储的计算机程序,以执行本申请提供的用于信道测量的方法中由终端设备(如,第二终端设备或第一终端设备)执行的相应操作和/或流程。可选地,该芯片还包括存储器,该存储器与该处理器通过电路或电线与存储器连接,处理器用于读取并执行该存储器中的计算机程序。进一步可选地,该芯片还包括通信接口,处理器与该通信接口连接。通信接口用于接收处理的数据和/或信息,处理器从该通信接口获取该数据和/或信息,并对该数据和/或信息进行处理。该通信接口可以是该芯片上的输入/输出接口、接口电路、输出电路、输入电路、管脚或相关电路等。所述处理器也可以体现为处理电路或逻辑电路。
本申请还提供一种芯片,包括处理器。该处理器用于读取并运行存储器中存储的计算机程序,以执行本申请提供的用于信道测量的方法中由网络设备(如,接入网设备)执行的相应操作和/或流程。可选地,该芯片还包括存储器,该存储器与该处理器通过电路或电线与存储器连接,处理器用于读取并执行该存储器中的计算机程序。进一步可选地,该芯片还包括通信接口,处理器与该通信接口连接。通信接口用于接收处理的数据和/或信息,处理器从该通信接口获取该数据和/或信息,并对该数据和/或信息进行处理。该通信接口可以是该芯片上的输入/输出接口、接口电路、输出电路、输入电路、管脚或相关电 路等。所述处理器也可以体现为处理电路或逻辑电路。
上述的芯片也可以替换为芯片系统,这里不再赘述。
本申请中的术语“包括”和“具有”以及他们的任何变形,意图在于覆盖不排他的包含,例如,包含了一系列步骤或单元的过程、方法、系统、产品或设备不必限于清楚地列出的那些步骤或单元,而是可包括没有清楚地列出的或对于这些过程、方法、产品或设备固有的其它步骤或单元。
本领域普通技术人员可以意识到,结合本文中所公开的实施例描述的各示例的单元及算法步骤,能够以电子硬件、或者计算机软件和电子硬件的结合来实现。这些功能究竟以硬件还是软件方式来执行,取决于技术方案的特定应用和设计约束条件。专业技术人员可以对每个特定的应用来使用不同方法来实现所描述的功能,但是这种实现不应认为超出本申请的范围。
所属领域的技术人员可以清楚地了解到,为描述的方便和简洁,上述描述的系统、装置和单元的具体工作过程,可以参考前述方法实施例中的对应过程,在此不再赘述。
在本申请所提供的几个实施例中,应该理解到,所揭露的系统、装置和方法,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系统,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,在本申请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存在,也可以两个或两个以上单元集成在一个单元中。
所述功能如果以软件功能单元的形式实现并作为独立的产品销售或使用时,可以存储在一个计算机可读取存储介质中。基于这样的理解,本申请的技术方案本质上或者说对现有技术做出贡献的部分或者该技术方案的部分可以以软件产品的形式体现出来,该计算机软件产品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,或者网络设备等)执行本申请各个实施例所述方法的全部或部分步骤。而前述的存储介质包括:U盘、移动硬盘、只读存储器(read-only memory,ROM)、随机存取存储器(random access memory,RAM)、磁碟或者光盘等各种可以存储程序代码的介质。
另外,本申请中术语“和/或”,仅仅是一种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。另外,本文中字符“/”,一般表示前后关联对象是一种“或”的关系;本申请中术语“至少一个”,可以表示“一个”和“两个或两个以上”,例如,A、B和C中至少一个,可以表示:单独存在A,单独存在B,单独存在C、同时存在A和B,同时存在A和C,同时存在C和B,同时存在A和B和C,这七种情况。
以上所述,仅为本申请的具体实施方式,但本申请的保护范围并不局限于此,任何熟 悉本技术领域的技术人员在本申请揭露的技术范围内,可轻易想到变化或替换,都应涵盖在本申请的保护范围之内。因此,本申请的保护范围应以所述权利要求的保护范围为准。

Claims (83)

  1. 一种通信方法,其特征在于,包括:
    接收来自第一终端设备的第一信息;
    根据所述第一信息确定第一数据的第一缓存信息,所述第一缓存信息用于指示所述第一数据的大小;
    在接收到来自所述第一终端设备的所述第一数据之前,向接入网设备发送第一请求消息,所述第一请求信息中包括所述第一缓存信息,所述第一请求信息用于请求第一资源,
    其中,所述第一数据包括所述第一终端设备待通过第二终端设备向所述接入网设备发送的数据,所述第一终端设备包括通过所述第二终端设备接入所述接入网设备的终端设备,所述第一资源包括所述第二终端设备向所述接入网设备发送所述第一数据使用的资源。
  2. 根据权利要求1所述的方法,其特征在于,所述第一信息包括所述第一终端设备向所述第二终端设备发送所述第一数据使用的第一侧行链路SL资源信息。
  3. 根据权利要求2所述的方法,其特征在于,所述方法还包括:
    根据所述第一SL资源信息确定第一时间信息,所述第一时间信息用于指示所述第一终端设备接收到所述第一数据的时刻或者发送所述第一数据的时刻。
  4. 根据权利要求2或3所述的方法,其特征在于,所述第一SL资源信息包括重传数据的SL资源信息和/或预留的用于新传数据的SL资源信息。
  5. 根据权利要求1所述的方法,其特征在于,所述第一信息中包括所述第一数据的第二缓存信息,所述第二缓存信息用于指示所述第一数据对应的第一逻辑信道组的缓存信息,
    其中,所述第一逻辑信道组为所述第一终端设备和所述第二终端设备之间的逻辑信道组。
  6. 根据权利要求5所述的方法,其特征在于,所述根据所述第一信息确定第一数据的第一缓存信息,包括:
    根据所述第二缓存信息和第一对应关系确定所述第一数据对应的第二逻辑信道组的所述第一缓存信息,
    其中,所述第一对应关系为所述第一逻辑信道组和第二逻辑信道组的对应关系,所述第二逻辑信道组为所述第一终端设备和所述接入网设备之间的逻辑信道组。
  7. 根据权利要求5或6所述的方法,其特征在于,所述第一信息中还包括第二时间信息,所述第二时间信息用于向所述第二终端设备指示所述第二终端设备接收到所述第一数据的时刻或者发送所述第一数据的时刻。
  8. 根据权利要求7所述的方法,其特征在于,所述方法还包括:
    根据所述第二时间信息和第二对应关系确定第一时间信息,所述第一时间信息用于向所述接入网设备指示所述第一终端设备接收到所述第一数据的时刻或者发送所述第一数据的时刻,
    其中,所述第二对应关系为第一定时信息和第二定时信息之间的对应关系,所述第一定时信息为所述第一终端设备和所述第二终端设备之间的第一通信接口的定时信息,所述 第二定时信息为所述第一终端设备和所述接入网设备之间的第二通信接口的定时信息。
  9. 根据权利要求1至8中任一项所述的方法,其特征在于,所述第一信息包含于侧行链路控制信息SCI中。
  10. 根据权利要求3或8所述的方法,其特征在于,所述第一请求信息中还包括所述第一时间信息。
  11. 根据权利要求1至10中任一项所述的方法,其特征在于,所述第一请求信息中还包括所述第一终端设备的标识信息。
  12. 根据权利要求1至11中任一项所述的方法,其特征在于,所述方法还包括:
    接收来自所述接入网设备的配置信息,所述配置信息用于指示具有为至少一个终端设备发送所述第一请求信息的能力,所述至少一个终端设备包括所述第一终端设备。
  13. 根据权利要求1至12中任一项所述的方法,其特征在于,所述方法还包括:
    接收来自所述接入网设备的第一下行控制信息DCI,所述第一DCI用于指示所述第一资源。
  14. 根据权利要求13所述的方法,其特征在于,所述第一DCI中包括第一指示信息,所述第一指示信息用于指示所述第一资源用于传输所述第一终端设备的上行数据。
  15. 一种通信方法,其特征在于,包括:
    根据待通过第二终端设备向接入网设备发送的第一数据确定第一信息,所述第一信息用于确定第一缓存信息,所述第一缓存信息用于指示所述第一数据的大小;
    向所述第二终端设备发送所述第一信息。
  16. 根据权利要求15所述的方法,其特征在于,所述第一信息包括所述第一终端设备向所述第二终端设备发送所述第一数据使用的第一侧行链路SL资源信息。
  17. 根据权利要求16所述的方法,其特征在于,所述第一SL资源信息包括重传数据的SL资源信息和/或预留的用于新传数据的SL资源信息。
  18. 根据权利要求15至17中任一项所述的方法,其特征在于,所述第一信息中包括所述第一数据的第二缓存信息,所述第二缓存信息用于指示所述第一数据对应的第一逻辑信道组的缓存信息,其中,所述第一逻辑信道组为所述第一终端设备和所述第二终端设备之间的逻辑信道组。
  19. 根据权利要求15至18中任一项所述的方法,其特征在于,所述第一信息中还包括第二时间信息,所述第二时间信息用于向所述第二终端设备指示所述第二终端设备接收到所述第一数据的时刻或者发送所述第一数据的时刻。
  20. 根据权利要求15至19中任一项所述的方法,其特征在于,所述第一信息包含于侧行链路控制信息SCI中。
  21. 一种通信方法,其特征在于,包括:
    接收来自第二终端设备的第一请求信息,所述第一请求信息中包括第一缓存信息,所述第一请求信息用于请求第一资源,所述第一缓存信息用于指示第一数据的大小;
    向所述第二终端设备发送第一下行控制信息DCI,所述第一DCI用于指示所述第一资源,其中,所述第一数据包括第一终端设备待通过所述第二终端设备向接入网设备发送的数据,所述第一终端设备包括通过所述第二终端设备接入所述接入网设备的终端设备,所述第一资源包括所述第二终端设备向所述接入网设备发送所述第一数据使用的资源。
  22. 根据权利要求21所述的方法,其特征在于,所述第一请求信息中还包括第一时间信息,所述第一时间信息用于指示所述第一终端设备接收到所述第一数据的时刻或者发送所述第一数据的时刻。
  23. 根据权利要求21或22所述的方法,其特征在于,所述第一DCI中包括第一指示信息,所述第一指示信息用于指示所述第一资源用于传输所述第一终端设备的上行数据。
  24. 一种通信方法,其特征在于,包括:
    接收资源指示信息,所述资源指示信息用于指示第二资源;
    使用所述第二资源向接入网设备发送第三数据,其中,所述第三数据包括第一终端设备待通过第二终端设备向所述接入网设备发送的数据,所述第一终端设备包括通过所述第二终端设备接入所述接入网设备的终端设备,所述第二资源与第二侧行链路SL资源相对应,所述第二SL资源为所述第一终端设备向所述第二终端设备发送所述第三数据使用的资源。
  25. 根据权利要求24所述的方法,其特征在于,所述第三数据为第一终端设备使用所述第二侧行链路SL资源向第二终端设备发送的数据。
  26. 根据权利要求24或25所述的方法,其特征在于,所述接收资源指示信息,包括:
    在接收到来自所述第一终端设备的所述第三数据之前,接收来自所述接入网设备的第二下行控制信息DCI,所述第二DCI用于指示所述第二资源和所述第二SL资源。
  27. 根据权利要求26所述的方法,其特征在于,所述方法还包括:接收来自所述接入网设备的第一标识,所述第一标识用于接收所述第二DCI。
  28. 根据权利要求26或27所述的方法,其特征在于,所述方法还包括:根据所述第二DCI确定使用所述第二资源发送从所述第二SL资源上接收到的所述第三数据。
  29. 根据权利要求24至28中任一项所述的方法,其特征在于,所述接收资源指示信息,包括:接收来自所述第一终端设备的第一消息,所述第一消息中包括所述第三数据和所述资源指示信息。
  30. 根据权利要求24至29中任一项所述的方法,其特征在于,所述方法还包括:根据所述第三数据和所述资源指示信息确定使用所述第二资源发送所述第三数据。
  31. 根据权利要求24至30中任一项所述的方法,其特征在于,在使用所述第二资源向接入网设备发送所述第三数据之前,所述方法还包括:从所述第二SL资源解析得到所述第三数据,确定所述第三数据对应的逻辑信道;在所述第二资源上进行逻辑信道优先级LCP过程时,将所述第三数据对应的逻辑信道的优先级设置为最高优先级,其中,所述第三数据对应的逻辑信道为所述第二终端设备和所述接入网设备之间的逻辑信道。
  32. 一种通信方法,其特征在于,包括:
    接收来自接入网设备的第二下行控制信息DCI,所述第二DCI用于指示第二资源和第二侧行链路SL资源;
    使用所述第二SL资源向第二终端设备发送第三数据,其中,所述第三数据包括第一终端设备待通过第二终端设备向接入网设备发送的数据,所述第一终端设备包括通过所述第二终端设备接入所述接入网设备的终端设备,所述第二资源与第二侧行链路SL资源相对应,所述第二资源为所述第二终端设备向所述接入网设备发送所述第三数据使用的资源。
  33. 根据权利要求32所述的方法,其特征在于,所述第三数据为第一终端设备使用所 述第二侧行链路SL资源向第二终端设备发送的数据。
  34. 根据权利要求31至33中任一项所述的方法,其特征在于,所述方法还包括:
    接收来自所述接入网设备的第一标识,所述第一标识用于接收所述第二DCI。
  35. 一种通信方法,其特征在于,包括:
    确定第二资源和第二侧行链路SL资源,所述第二资源与所述第二SL资源相对应,所述第二资源为第二终端设备向接入网设备发送第三数据使用的资源,所述第二SL资源为第一终端设备向所述第二终端设备发送所述第三数据使用的资源;
    向所述第一终端设备发送第二下行控制信息DCI,所述第二DCI用于指示所述第二资源和所述第二SL资源,其中,所述第一终端设备为通过所述第二终端设备接入所述接入网设备的终端设备。
  36. 根据权利要求35所述的方法,其特征在于,所述方法还包括:
    向所述第一终端设备发送第一标识,所述第一标识用于接收所述第二DCI。
  37. 根据权利要求35或36所述的方法,其特征在于,所述方法还包括:
    向所述第二终端设备发送第一标识,所述第一标识用于接收所述第二DCI。
  38. 根据权利要求35至37中任一项所述的方法,其特征在于,所述方法还包括:
    向所述第二终端设备发送所述第二DCI。
  39. 一种通信装置,其特征在于,包括:
    接收单元,用于接收来自第一终端设备的第一信息;
    处理单元,用于根据所述第一信息确定第一数据的第一缓存信息,所述第一缓存信息用于指示所述第一数据的大小;
    发送单元,用于在所述接收单元接收到来自所述第一终端设备的所述第一数据之前,向接入网设备发送第一请求消息,所述第一请求信息中包括所述第一缓存信息,所述第一请求信息用于请求第一资源,
    其中,所述第一数据包括所述第一终端设备待通过第二终端设备向所述接入网设备发送的数据,所述第一终端设备包括通过所述第二终端设备接入所述接入网设备的终端设备,所述第一资源包括所述第二终端设备向所述接入网设备发送所述第一数据使用的资源。
  40. 根据权利要求39所述的装置,其特征在于,所述第一信息包括所述第一终端设备向所述第二终端设备发送所述第一数据使用的第一侧行链路SL资源信息。
  41. 根据权利要求40所述的装置,其特征在于,所述处理单元,还用于根据所述第一SL资源信息确定第一时间信息,所述第一时间信息用于指示所述第一终端设备接收到所述第一数据的时刻或者发送所述第一数据的时刻。
  42. 根据权利要求40或41所述的装置,其特征在于,所述第一SL资源信息包括重传数据的SL资源信息和/或预留的用于新传数据的SL资源信息。
  43. 根据权利要求42所述的装置,其特征在于,所述第一信息中包括所述第一数据的第二缓存信息,所述第二缓存信息用于指示所述第一数据对应的第一逻辑信道组的缓存信息,
    其中,所述第一逻辑信道组为所述第一终端设备和所述第二终端设备之间的逻辑信道组。
  44. 根据权利要求43所述的装置,其特征在于,所述处理单元根据所述第一信息确 定第一数据的第一缓存信息,包括:
    所述处理单元根据所述第二缓存信息和第一对应关系确定所述第一数据对应的第二逻辑信道组的所述第一缓存信息,
    其中,所述第一对应关系为所述第一逻辑信道组和第二逻辑信道组的对应关系,所述第二逻辑信道组为所述第一终端设备和所述接入网设备之间的逻辑信道组。
  45. 根据权利要求43或44所述的装置,其特征在于,所述第一信息中还包括第二时间信息,所述第二时间信息用于向所述第二终端设备指示所述第二终端设备接收到所述第一数据的时刻或者发送所述第一数据的时刻。
  46. 根据权利要求45所述的装置,其特征在于,所述处理单元,还用于根据所述第二时间信息和第二对应关系确定第一时间信息,所述第一时间信息用于向所述接入网设备指示所述第一终端设备接收到所述第一数据的时刻或者发送所述第一数据的时刻,
    其中,所述第二对应关系为第一定时信息和第二定时信息之间的对应关系,所述第一定时信息为所述第一终端设备和所述第二终端设备之间的第一通信接口的定时信息,所述第二定时信息为所述第一终端设备和所述接入网设备之间的第二通信接口的定时信息。
  47. 根据权利要求41至46中任一项所述的装置,其特征在于,所述第一信息包含于侧行链路控制信息SCI中。
  48. 根据权利要求41或46所述的装置,其特征在于,所述第一请求信息中还包括所述第一时间信息。
  49. 根据权利要求39至48中任一项所述的装置,其特征在于,所述第一请求信息中还包括所述第一终端设备的标识信息。
  50. 根据权利要求39至49中任一项所述的装置,其特征在于,所述接收单元,还用于接收来自所述接入网设备的配置信息,所述配置信息用于指示具有为至少一个终端设备发送所述第一请求信息的能力,所述至少一个终端设备包括所述第一终端设备。
  51. 根据权利要求39至50中任一项所述的装置,其特征在于,所述接收单元,还用于接收来自所述接入网设备的第一下行控制信息DCI,所述第一DCI用于指示所述第一资源。
  52. 根据权利要求51所述的装置,其特征在于,所述第一DCI中包括第一指示信息,所述第一指示信息用于指示所述第一资源用于传输所述第一终端设备的上行数据。
  53. 一种通信装置,其特征在于,包括:
    处理单元,用于根据待通过第二终端设备向接入网设备发送的第一数据确定第一信息,所述第一信息用于确定第一缓存信息,所述第一缓存信息用于指示所述第一数据的大小;
    发送单元,用于向所述第二终端设备发送所述第一信息。
  54. 根据权利要求50所述的装置,其特征在于,所述第一信息包括所述第一终端设备向所述第二终端设备发送所述第一数据使用的第一侧行链路SL资源信息。
  55. 根据权利要求54所述的装置,其特征在于,所述第一SL资源信息包括重传数据的SL资源信息和/或预留的用于新传数据的SL资源信息。
  56. 根据权利要求53至55中任一项所述的装置,其特征在于,所述第一信息中包括所述第一数据的第二缓存信息,所述第二缓存信息用于指示所述第一数据对应的第一逻辑信道组的缓存信息,其中,所述第一逻辑信道组为所述第一终端设备和所述第二终端设备 之间的逻辑信道组。
  57. 根据权利要求53至56中任一项所述的装置,其特征在于,所述第一信息中还包括第二时间信息,所述第二时间信息用于向所述第二终端设备指示所述第二终端设备接收到所述第一数据的时刻或者发送所述第一数据的时刻。
  58. 根据权利要求53至57中任一项所述的装置,其特征在于,所述第一信息包含于侧行链路控制信息SCI中。
  59. 一种通信装置,其特征在于,包括:
    接收单元,用于接收来自第二终端设备的第一请求信息,所述第一请求信息中包括第一缓存信息,所述第一请求信息用于请求第一资源,所述第一缓存信息用于指示第一数据的大小;
    发送单元,用于向所述第二终端设备发送第一下行控制信息DCI,所述第一DCI用于指示所述第一资源,其中,所述第一数据包括第一终端设备待通过所述第二终端设备向接入网设备发送的数据,所述第一终端设备包括通过所述第二终端设备接入所述接入网设备的终端设备,所述第一资源包括所述第二终端设备向所述接入网设备发送所述第一数据使用的资源。
  60. 根据权利要求59所述的装置,其特征在于,所述第一请求信息中还包括第一时间信息,所述第一时间信息用于指示所述第一终端设备接收到所述第一数据的时刻或者发送所述第一数据的时刻。
  61. 根据权利要求59或60所述的装置,其特征在于,所述第一DCI中包括第一指示信息,所述第一指示信息用于指示所述第一资源用于传输所述第一终端设备的上行数据。
  62. 一种通信装置,其特征在于,包括:
    接收单元,用于接收资源指示信息,所述资源指示信息用于指示第二资源;
    发送单元,用于使用所述第二资源向接入网设备发送第三数据,其中,所述第三数据包括第一终端设备待通过第二终端设备向所述接入网设备发送的数据,所述第一终端设备包括通过所述第二终端设备接入所述接入网设备的终端设备,所述第二资源与第二侧行链路SL资源相对应,所述第二SL资源为所述第一终端设备向所述第二终端设备发送所述第三数据使用的资源。
  63. 根据权利要求62所述的装置,其特征在于,所述第三数据为第一终端设备使用所述第二侧行链路SL资源向第二终端设备发送的数据。
  64. 根据权利要求62或63所述的装置,其特征在于,所述接收资源指示信息,包括:在接收到来自所述第一终端设备的所述第三数据之前,接收来自所述接入网设备的第二下行控制信息DCI,所述第二DCI用于指示所述第二资源和所述第二SL资源。
  65. 根据权利要求61所述的装置,其特征在于,所述接收单元,还用于接收来自所述接入网设备的第一标识,该第一标识用于接收该第二DCI。
  66. 根据权利要求62至65中任一项所述的装置,其特征在于,所述装置还包括:
    处理单元,用于根据所述第二DCI确定使用所述第二资源发送从所述第二SL资源上接收到的所述第三数据。
  67. 根据权利要求62至66中任一项所述的装置,其特征在于,所述接收单元接收资源指示信息,包括:所述接收单元接收来自所述第一终端设备的第一消息,所述第一消息 中包括所述第三数据和所述资源指示信息。
  68. 根据权利要求62至67中任一项所述的装置,其特征在于,所述装置还包括:处理单元,用于根据所述第三数据和所述资源指示信息确定使用所述第二资源发送所述第三数据。
  69. 根据权利要求62至68中任一项所述的装置,其特征在于,在使用所述第二资源向接入网设备发送所述第三数据之前,所述装置还包括:处理单元,用于从所述第二SL资源解析得到所述第三数据,确定所述第三数据对应的逻辑信道;在所述第二资源上进行逻辑信道优先级LCP过程时,将所述第三数据对应的逻辑信道的优先级设置为最高优先级,其中,所述第三数据对应的逻辑信道为所述第二终端设备和所述接入网设备之间的逻辑信道。
  70. 一种通信装置,其特征在于,包括:
    接收单元,用于接收来自接入网设备的第二下行控制信息DCI,所述第二DCI用于指示第二资源和第二侧行链路SL资源;
    发送单元,用于使用所述第二SL资源向第一终端设备发送第三数据,其中,所述第三数据包括第一终端设备待通过第二终端设备向接入网设备发送的数据,所述第一终端设备包括通过所述第二终端设备接入所述接入网设备的终端设备,所述第二资源与第二侧行链路SL资源相对应,所述第二资源为所述第二终端设备向所述接入网设备发送所述第三数据使用的资源。
  71. 根据权利要求70所述的装置,其特征在于,所述第三数据为第一终端设备使用所述第二侧行链路SL资源向第二终端设备发送的数据。
  72. 根据权利要求70或71所述的装置,其特征在于,所述接收单元,还用于接收来自所述接入网设备的第一标识,所述第一标识用于接收所述第二DCI。
  73. 一种通信装置,其特征在于,包括:
    处理单元,用于确定第二资源和第二侧行链路SL资源,所述第二资源与所述第二SL资源相对应,所述第二资源为第二终端设备向接入网设备发送第三数据使用的资源,所述第二SL资源为第一终端设备向所述第二终端设备发送所述第三数据使用的资源;
    发送单元,用于向所述第一终端设备发送第二下行控制信息DCI,所述第二DCI用于指示所述第二资源和所述第二SL资源,其中,所述第一终端设备为通过所述第二终端设备接入所述接入网设备的终端设备。
  74. 根据权利要求73所述的装置,其特征在于,所述发送单元,还用于向所述第一终端设备发送第一标识,所述第一标识用于接收所述第二DCI。
  75. 根据权利要求73或74所述的装置,其特征在于,所述发送单元,还用于向所述第二终端设备发送第一标识,所述第一标识用于接收所述第二DCI。
  76. 根据权利要求73至75中任一项所述的装置,其特征在于,所述发送单元,还用于向所述第二终端设备发送所述第二DCI。
  77. 一种通信装置,其特征在于,包括:
    存储器,用于存储计算机程序;
    处理器,用于执行所述存储器中存储的计算机程序,以使得所述通信装置执行权利要求1至14中任一项所述的方法,或者以使得所述通信装置执行权利要求24至31中任一 项所述的方法。
  78. 一种通信装置,其特征在于,包括:
    存储器,用于存储计算机程序;
    处理器,用于执行所述存储器中存储的计算机程序,以使得所述通信装置执行权利要求15至20中任一项所述的方法,或者以使得所述通信装置执行权利要求32至34中任一项所述的方法。
  79. 一种通信装置,其特征在于,包括:
    存储器,用于存储计算机程序;
    处理器,用于执行所述存储器中存储的计算机程序,以使得所述通信装置执行权利要求21至23中任一项所述的方法,或者以使得所述通信装置执行权利要求35至38中任一项所述的方法。
  80. 一种计算机可读存储介质,其特征在于,所述计算机可读存储介质中存储有计算机指令,当所述计算机指令在计算机上运行时,如权利要求1至38中任一项所述的方法被执行。
  81. 一种包含指令的计算机程序产品,其特征在于,当所述计算机程序产品在计算机上运行时,使得计算机执行如权利要求1至38中任一项所述的方法。
  82. 一种通信系统,其特征在于,包括第一终端设备、第二终端设备和接入网设备,所述第二终端设备用于执行如权利要求1至14中任一项所述的方法,所述第一终端设备用于执行如权利要求15至20中任一项所述的方法,所述接入网设备用于执行如权利要求21至23中任一项所述的方法;或者,
    所述第二终端设备用于执行如权利要求24至31中任一项所述的方法,所述第一终端设备用于执行如权利要求32至34中任一项所述的方法,所述接入网设备用于执行如权利要求35至38中任一项所述的方法。
  83. 一种芯片,其特征在于,包括至少一个处理器,当程序指令被所述至少一个处理器中执行时,使得如权利要求1至38中任一项所述的方法被执行。
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