WO2021134561A1 - 通信方法和通信装置 - Google Patents

通信方法和通信装置 Download PDF

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Publication number
WO2021134561A1
WO2021134561A1 PCT/CN2019/130711 CN2019130711W WO2021134561A1 WO 2021134561 A1 WO2021134561 A1 WO 2021134561A1 CN 2019130711 W CN2019130711 W CN 2019130711W WO 2021134561 A1 WO2021134561 A1 WO 2021134561A1
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WIPO (PCT)
Prior art keywords
side link
terminal
communication
information
access network
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PCT/CN2019/130711
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English (en)
French (fr)
Inventor
许胜锋
杨艳梅
应江威
李濛
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华为技术有限公司
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Priority to CN201980099946.9A priority Critical patent/CN114342511A/zh
Priority to PCT/CN2019/130711 priority patent/WO2021134561A1/zh
Publication of WO2021134561A1 publication Critical patent/WO2021134561A1/zh

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

Definitions

  • This application relates to the field of communication, and more specifically, to a communication method and communication device.
  • D2D communication allows direct communication between User Equipment (UE).
  • UE User Equipment
  • D2D communication has been applied to 4G network systems.
  • the user equipment with the Uu port in the idle state can perform D2D communication of different services based on the resources in the side link resource pool.
  • D2D communication of different services can share the resources in the side link resource pool.
  • QoS quality of service
  • the present application provides a communication method and a communication device, which can configure the side link resource pool more reasonably, so as to meet the QoS requirements of different services.
  • a communication method including: a first terminal obtains context information of a side-link, where the side-link is used for D2D communication between the first terminal and the second terminal; The first terminal sends the context information of the side link to the access network device, where the context information of the side link is used by the access network device to configure the side link resource pool for D2D communication.
  • the method can realize the more reasonable configuration of the side link resource pool for the access network equipment, so as to meet the QoS requirements of different services.
  • the context information of the side link may be used to characterize the resource requirements of the D2D service carried or to be carried by the side link, for example, slicing requirements or QoS requirements.
  • the context information of the side link includes one or more of the following: slice information of the side link, and QoS requirement information of the D2D service carried by the side link.
  • the slice information includes one or more of the following: a slice service type of the side link, and a slice identifier of the side link.
  • the method before the first terminal sends the context information of the side link to the access network device, the method further includes: the first terminal sends to the policy control function PCF A first request message, and receive a first response message from the PCF; wherein, the first request message is used to request authorization of the first terminal to perform D2D communication, and the first response message is used to instruct to authorize the The first terminal performs D2D communication; or, the first request message carries information about the D2D service carried by the side link, and the first request message is used to request authorization of the first terminal to perform the side link.
  • the first response message is used to indicate that the first terminal is authorized to perform the D2D service carried by the side uplink.
  • the PCF authorizes the first terminal to perform D2D communication or D2D services, which can ensure the validity of the context information of the side link reported by the first terminal, and avoid the case where the first terminal is not authorized to perform D2D communication or D2D services.
  • the terminal still reports the context information of the side link, which makes the access network device's statistics of the context information of the side link inaccurate, resulting in unreasonable configuration of the side link resource pool.
  • the method before the first terminal sends the context information of the side link to the access network device, the method further includes: the first terminal sends a second request to the PCF Message, and receive a second response message from the PCF; wherein, the second request message carries context information of the side link, and the second request message is used to request authorization for the first terminal to use The resource corresponding to the context information, and the second response message is used to indicate that the first terminal is authorized to use the resource corresponding to the context information.
  • the first terminal sending the context information of the side link to the access network device includes: when the context information of the side link corresponds to the side link resource When the pool is congested, the first terminal sends the context information of the side link to the access network device; or,
  • the first terminal When the communication state of the side link satisfies a preset condition, the first terminal sends the context information of the side link to the access network device.
  • the method further includes: when the side link is interrupted, or the side link is deactivated, the first terminal reports to the access network device or The PCF sends first indication information, where the first indication information is used to indicate the end of the side link communication; or, when the first terminal switches across the access network equipment, the first terminal sends The access network device or the PCF sends second indication information, where the second indication information is used to indicate that the first terminal is handed over across the access network device.
  • a communication method including: an access network device receives context information of a side-link, the side-link is used for D2D communication between a first terminal and a second terminal;
  • the network access device configures a side-link resource pool for D2D communication according to the context information of the side-link.
  • the method can realize the more reasonable configuration of the side link resource pool for the access network equipment, so as to meet the QoS requirements of different services.
  • the context information of the side link may be used to characterize the resource requirements of the D2D service carried or to be carried by the side link, for example, slicing requirements or QoS requirements.
  • the context information of the side link includes one or more of the following: slice information of the side link, and QoS requirement information of the D2D service carried by the side link.
  • the side link resource pool includes: a slice-based side link resource pool, a PQI-based side link resource pool, or a slice and PQI-based side link resource pool.
  • the method further includes: the access network device receives instruction information from the first terminal, where the instruction information is used to indicate the end of the side link communication, Or the indication information is used to indicate that the first terminal is handed over across the access network device; the access network device reconfigures the sidelink resource pool used for D2D communication according to the indication information.
  • the receiving, by the access network device, the context information of the side link includes: the access network device receiving the context information of the side link from the first terminal Or, the access network device receives the context information of the side link from the PCF.
  • a communication method including: a policy control function PCF receives a first request message from a first terminal; the PCF sends a first response message to the first terminal according to the first request message ; Wherein, the first request message is used to request authorization of the first terminal to perform D2D communication, and the first response message is used to indicate that the first terminal is authorized to perform D2D communication; or, the first request message carries There is D2D service information, the first request message is used to request authorization of the first terminal to perform the D2D service, and the first response message is used to indicate that the first terminal is authorized to perform the D2D service.
  • the PCF authorizes the first terminal to perform D2D communication or D2D services, which can ensure the validity of the context information of the side link reported by the first terminal, and avoid the case where the first terminal is not authorized to perform D2D communication or D2D services.
  • the terminal still reports the context information of the side link, which makes the access network device's statistics of the context information of the side link inaccurate, resulting in unreasonable configuration of the side link resource pool.
  • a communication method including: a policy control function PCF receives a second request message from a first terminal, the second request message carries context information of a side link, and the side link Used for D2D communication between the first terminal and the second terminal, the second request message is used to request authorization for the first terminal to use the resource corresponding to the context information; the PCF according to the second request Message, sending a second response message to the first terminal, where the second response message is used to indicate that the first terminal is authorized to use the resource corresponding to the context information.
  • the access network device By authorizing the first terminal to use the resources corresponding to the context information through the PCF, the validity of the context information of the side link reported by the first terminal can be guaranteed, and the situation where the first terminal is not authorized to use the resources corresponding to the context information Under the circumstances, the access network device still counts the context information, which in turn leads to an unreasonable configuration of the side link resource pool.
  • the context information of the side link includes one or more of the following: slice information of the side link, QoS requirements of the D2D service carried by the side link information.
  • the method further includes: the PCF sending the context information of the side link to the access network device of the first terminal.
  • the method further includes: the PCF receives first indication information, where the first indication information is used to indicate the end of the side link communication; the PCF according to the The first indication information performs charging statistics on the first terminal, and/or the PCF sends the first indication information to the access network device of the first terminal.
  • the method further includes: the PCF receives second indication information, where the second indication information is used to instruct the first terminal to switch across access network devices; the The PCF sends the second indication information to the access network device of the first terminal before the handover of the cross-access network device occurs.
  • a communication device in a fifth aspect, includes a processing module and a transceiver module.
  • the processing module can receive or send messages through the transceiver module.
  • the processing module can be used to execute any of the above aspects and implementation methods.
  • the communication device may be the first terminal in the foregoing first aspect, or may also be a chip or a system on a chip in the first terminal.
  • the communication device may include modules, units, or means corresponding to the method in the first aspect described above, and the modules, units, or means may be implemented by hardware, software, or hardware execution of corresponding software.
  • the hardware or software includes one or more modules or units corresponding to the above-mentioned functions.
  • the communication device may be the access network device in the second aspect described above, or a chip or a system on a chip in the access network device.
  • the communication device may include a module, unit, or means corresponding to the method in the second aspect described above, and the module, unit, or means may be implemented by hardware, software, or hardware execution of corresponding software.
  • the hardware or software includes one or more modules or units corresponding to the above-mentioned functions.
  • the communication device may be the PCF in the third or fourth aspect, or a chip or a system on a chip in the PCF.
  • the communication device may include a module, unit, or means corresponding to the method in the third or fourth aspect.
  • the module, unit, or means may be implemented by hardware, software, or hardware to execute corresponding software.
  • the hardware or software includes one or more modules or units corresponding to the above-mentioned functions.
  • a communication device including: a processor, and may also include a memory; the memory is used to store computer instructions, and when the processor executes the instructions, the communication device can execute the instructions described in any of the above aspects.
  • the communication device may be the aforementioned first terminal, or a device in the aforementioned first terminal, such as a system chip; or, the communication device can be the aforementioned access network device, or a device in the aforementioned access network device, such as a system chip; Alternatively, the communication device may be a PCF in any of the above aspects, or a device in a PCF in any of the above aspects, such as a system chip.
  • a computer program product includes: computer instructions (also called codes, or instructions) that, when the computer instructions are executed, cause any of the above aspects to be executed The method in the possible implementation mode.
  • a computer-readable storage medium stores computer instructions (also called codes, or instructions) when it runs on a computer or a processor, so that the computer or processor
  • the device executes the method in any possible implementation manner of any one of the foregoing aspects.
  • a communication system in a thirteenth aspect, includes the access network device of the above-mentioned second aspect, may also include the PCF of the third or fourth aspect, and may also include the first terminal of the first aspect.
  • Figure 1 is a schematic diagram of the architecture of a D2D communication system
  • Figure 2 is a schematic diagram of the architecture of a 5G communication system
  • FIG. 3 is a schematic flowchart of a communication method according to an embodiment of the present application.
  • FIG. 4 is a schematic flowchart of another communication method according to an embodiment of the present application.
  • FIG. 5 is a schematic structural diagram of a communication device according to an embodiment of the present application.
  • Fig. 6 is a schematic structural diagram of another communication device according to an embodiment of the present application.
  • FIG. 1 shows a schematic diagram of the architecture of a D2D communication system.
  • the D2D communication system includes: UE1, UE2, and radio access network (Radio Access Network, RAN) equipment.
  • UE1 and UE2 can communicate through the communication link of the PC5 port, which can be referred to as PC5 port communication.
  • UE1 and UE2 can communicate with the RAN through a Uu port communication link, which can be referred to as Uu port communication.
  • the PC5 port refers to the interface between two UEs
  • the Uu port refers to the interface between the UE and the RAN.
  • the communication link of the PC5 port can also be called a side link or a D2D communication link, which is used for information transmission between the data plane and the control plane, and carries messages such as direct discovery (Direct Discovery) and direct communication (Direct Communication).
  • the PC 5-port communication can adopt a variety of air interface technologies, for example, the fifth generation (5G) technology or the long term evolution (Long Term Evolution, LTE) technology.
  • 5G fifth generation
  • LTE Long Term Evolution
  • UE can be a terminal, an access terminal, a user unit, a user station, a mobile station, a mobile station, a remote station, a remote terminal, a mobile device, a user terminal, a wireless communication device, a user agent, or a user device.
  • the terminal 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), and a wireless communication function Handheld devices, computing devices or other processing devices connected to wireless modems, in-vehicle devices, wearable devices, etc., are not restricted.
  • SIP session initiation protocol
  • WLL wireless local loop
  • PDA personal digital assistant
  • RAN equipment It can also be called an access network equipment, which is mainly responsible for functions such as radio resource management, service quality management, data compression and encryption on the air interface side.
  • the access network equipment may include various forms of base stations, such as macro base stations, micro base stations, relay stations, and access points.
  • base stations such as macro base stations, micro base stations, relay stations, and access points.
  • the names of devices with base station functions may be different, for example, gNB in 5G systems, evolved NodeB (eNB or eNodeB) in LTE systems, cloud
  • eNB evolved NodeB
  • eNodeB evolved NodeB
  • CRAN cloud radio access network
  • the access network equipment can also be relay stations, access points, in-vehicle equipment, wearable devices, and access network equipment in the future 5G network or the access network in the future evolved public land mobile network (PLMN). There are no restrictions on network access equipment.
  • PLMN public land mobile network
  • the D2D communication architecture shown in FIG. 1 may be based on a 5G communication system, or may be based on an LTE communication system, or a future communication system, without limitation.
  • Figure 2 shows a schematic diagram of the architecture of a 5G communication system.
  • the communication system includes: a terminal 201, a RAN device 202, a user plane function (UPF) 203, a data network (DN) 204, and an authentication server function (AUSF) 205, AMF206, session management function (SMF) 207, network exposure function (NEF) 208, network repository function (NRF) 209, policy control function (PCF) ) 210, unified data management (udified data management, UDM) 211 and NSSF212.
  • UPF user plane function
  • DN data network
  • AUSF authentication server function
  • AMF session management function
  • SMF session management function
  • NEF network exposure function
  • NRF network repository function
  • PCF policy control function
  • the terminal 201 mainly accesses the network through a wireless air interface and obtains services.
  • the terminal interacts with the RAN device 202 through the air interface, and interacts with the AMF 206 of the core network through non-access stratum (NAS).
  • NAS non-access stratum
  • the RAN 202 is mainly responsible for air interface resource scheduling and air interface connection management for the terminal 201 to access the network.
  • gNB in 5G systems.
  • UPF203 is mainly responsible for the forwarding and receiving of user data in the terminal.
  • the UPF can receive user data from the data network and transmit it to the terminal through the access network device, and can also receive user data from the terminal through the access network device and forward it to the data network.
  • the transmission resources and scheduling functions of UPF103 that provide services for terminals are managed and controlled by SMF207.
  • AUSF205 is mainly responsible for the authentication and authorization of users to ensure that users are legitimate users.
  • AMF206 mainly responsible for signaling processing, such as: access control, mobility management, attach and detach, and gateway selection, etc., and AMF206 can also provide services for the session in the terminal. Storage resources of the control plane to store the session identifier, the SMF identifier associated with the session identifier, etc.
  • SMF207 is responsible for user plane network element selection, user plane network element redirection, Internet protocol (IP) address allocation, bearer establishment, modification and release, and quality of service (QoS) control.
  • IP Internet protocol
  • QoS quality of service
  • NEF208 used to be responsible for the opening of mobile network capabilities.
  • NRF209 is used for dynamic registration of service capabilities of network functions and discovery of network functions.
  • PCF210 is used to provide policy rules to the control layer network function, and is also responsible for obtaining user subscription information related to policy decisions.
  • UDM211 used for unified data management, supports 3GPP authentication, user identity operation, authorization grant, registration and mobility management functions.
  • NSSF212 is used to complete the network slice selection function for the terminal.
  • UDR213 is responsible for the storage and provision of terminal subscription data, or the storage and provision of terminal policy data.
  • Nausf is the service-based interface displayed by AUSF205
  • Namf is the service-based interface displayed by AMF206
  • Nsmf is the service-based interface displayed by SMF207
  • Nnef is the service-based interface displayed by NEF208
  • Nnrf is displayed by NRF209.
  • Npcf is the service-based interface displayed by PCF210
  • Nudm is the service-based interface displayed by UDM211
  • Nnssf is the service-based interface displayed by NSSF212
  • Nudr is the service-based interface displayed by UDR213.
  • N1 is the reference point between UE201 and AMF206
  • N2 is the reference point between RAN equipment 202 and AMF206, used for sending NAS messages, etc.
  • N3 is the reference point between RAN202 and UPF203, used for transmitting user plane data, etc.
  • N4 is the reference point between SMF207 and UPF203, used to transmit information such as N3 connection tunnel identification information, data buffer indication information, and downlink data notification messages
  • N6 interface is the reference point between UPF203 and DN204, used for transmission User data, etc.
  • Slicing refers to the division of the operator's physical network into multiple logical networks to achieve multiple uses in one network. Slicing enables operators to build multiple dedicated, virtual, isolated, and on-demand logical networks on a physical network, thereby meeting the different requirements of customers in different industries for network capabilities (such as delay, bandwidth, etc.) Number of connections, etc.).
  • the QoS requirement of the service is used to characterize the requirement or requirement of the service for QoS.
  • the QoS requirement may include QoS requirement parameters, for example, packet delay budget (packet delay budget), packet error rate (packet error rate), and maximum data burst volume (maximum data burst volume).
  • packet delay budget packet delay budget
  • packet error rate packet error rate
  • maximum data burst volume maximum data burst volume
  • Fig. 3 shows a schematic flowchart of a communication method of the present application, as described below.
  • the first terminal obtains context information of a side link.
  • the side link can be used for D2D communication between the first terminal and the second terminal.
  • the side link can also be referred to as a D2D communication link, and can also be referred to as a PC5 communication link, without limitation.
  • the PC5 communication link may refer to the communication link based on the PC5 port.
  • the context information of the side link may be used to characterize the resource requirements of the D2D service carried or to be carried by the side link, for example, slicing requirements or QoS requirements.
  • the context information of the side link may include one or more of the following: slice information of the side link, and QoS requirement information of the D2D service carried by the side link.
  • the slice information of the side link may be used to identify the slice of the side link.
  • the slice of the side link may refer to the slice to which the side link belongs, that is, the slice to which resources (for example, frequency domain resources, time domain resources) occupied by the side link belong. For example, if the frequency occupied by the side uplink belongs to the frequency allocated to the V2V slice in advance, then the slice to which the side uplink belongs is the V2V slice.
  • the slice information of the side link may include one or more of the following: the slice service type of the side link, and the slice identifier of the side link.
  • the slicing service type can be V2V slicing, unmanned aerial vehicle (UAV) to unmanned aerial vehicle (UAV to UAV, U2U) slicing, or slicing for communication between mobile phones and mobile phones.
  • V2V slices can be used for V2V communication
  • U2U slices can be used for communication between drones. It should be pointed out that if there is only one V2V slice in a PLMN, the slice service type can also be used to identify slices.
  • the slice identifier can be used to identify the slice, for example, the name of the slice, the number of the slice, and so on.
  • the slice identifier may be slice selection assistance information.
  • the D2D service carried by the side link may refer to the D2D service carried on the side link, that is, the D2D service performed through the side link, for example, V2V service and U2U service.
  • the QoS requirement information of the D2D service carried by the side link may be a QoS requirement parameter in the QoS requirement of the D2D service carried by the side link; or, the QoS requirement of the D2D service carried by the side link
  • the information may be indication information of the QoS requirements of the D2D service carried by the side link, for example, PC5 5G QoS identifier (PC5 5G QoS identifier, PQI).
  • the first terminal may determine the QoS requirement information according to the D2D service type, and the D2D service type may be a V2V service or a U2U service.
  • the D2D service type may be a V2V service or a U2U service.
  • the corresponding relationship may be pre-configured in the first terminal, or the corresponding relationship may be obtained from the network side when the first terminal registers, which is not limited.
  • the first terminal sends the context information of the side link to the access network device.
  • the context information of the side link is used for the access network device to configure the side link resource pool for D2D communication.
  • the first terminal may send the context information of the side link to the access network device through a core network device (for example, AMF, PCF, etc.).
  • the first terminal may send the context information of the side link through a NAS message.
  • the AMF network element sends the context information of the side link to the PCF.
  • the PCF authorizes the first terminal (for details, please refer to the relevant description of the subsequent PCF authorization).
  • the context information of the uplink is sent to the access network device, and the AMF may also send the context information of the side link to the access network device after learning that the first terminal is authorized.
  • the first terminal can also directly send the context information of the side link to the access network device through a radio resource control (radio resource control, RRC) message, without limitation.
  • RRC radio resource control
  • the access network device receives the context information of the side link.
  • the access network device receives the context information of the side link directly from the first terminal; or the access network device receives the context information of the side link from the PCF or AMF.
  • the first terminal may periodically send the context information of the side link, or it may send the context information of the side link in an event-triggered manner (for details, please refer to the relevant description of steps 302a-302b). No restrictions.
  • the first terminal may perform step 302 after the Uu port between it and the access network device becomes connected; or, if the Uu port of the first terminal is The Uu port is in the connected state, then the first terminal can directly execute step 302.
  • the access network device configures a sidelink resource pool for D2D communication according to the context information of the sidelink.
  • the side link resource pool used for D2D communication may be referred to as a side link resource pool for short, and may also be called a side link physical resource pool.
  • the side link resource pool may refer to a set of time domain resources and/or frequency domain resources used for D2D communication, that is, all resources in the side link resource pool may be used for D2D communication.
  • the time domain resources of the side link resource pool can be a time range, and the time range can be a time period (for example, 8:00-12:00) or a time length (for example, 4 hours, or 40 minutes, etc.) To represent.
  • the frequency domain resources of the side link resource pool may be in the frequency range, for example, 110-128 MHz.
  • the resources in the side link resource pool can be used for D2D communication between terminals with Uu ports in an idle state, and can also be used for D2D communication between terminals with Uu ports in a connected state.
  • the side link resource pool may include: a slice-based side link resource pool, a PQI-based side link resource pool, or a slice and PQI-based side link resource pool.
  • the slice-based side link resource pool may be a side link resource pool configured with slice granularity. For different slices, different side link resource pools may be configured. In other words, the slice information has a corresponding relationship with the side link resource pool, and the side link resource pool corresponding to the slice identified by the slice information can be indexed or found through the slice information.
  • V2V slices configure the side link resource pool of the V2V slice (can be recorded as side link resource pool X); for U2U slices, configure the side link resource pool of the U2U slice (can be recorded as side link resource pool).
  • Road resource pool Y For another example, for slice 1, configure the side link resource pool of slice 1 (which can be recorded as side link resource pool m); for slice 2, configure the side link resource pool of slice 2 (which can be recorded as side link resource pool).
  • Link resource pool n
  • the number of side links of a V2V slice (that is, the number of side links that occupy resources belonging to the V2V slice) is greater than the number of side links of a U2U slice (that is, the number of side links that occupy resources belongs to the U2U slice).
  • the number of uplink links then the side link resource pool X configured for the V2V slice is greater than the side link resource pool Y configured for the U2U slice, that is, the number of resources in the side link resource pool of the V2V slice ( For example, the frequency range, or time length) is greater than the number of resources in the side link resource pool of the U2U slice.
  • the side link resource pool of the V2V slice includes the first frequency
  • the side link resource pool of the U2U slice includes the second frequency
  • the side-link resource pool based on QoS requirements may refer to a side-link resource pool configured with QoS requirements as the granularity.
  • QoS requirements different side-link resource pools can be configured.
  • the QoS requirement information is PQI
  • the size of the number of resources in the side link resource pool can be compared based on the frequency range and time range of the side link resource pool.
  • the side link resource pool a includes all time domains with a frequency of 110-128 MHz.
  • resources, side link resource pool b includes all time domain resources with frequencies between 128-140 MHz, then the number of resources in side link resource pool a is greater than the number of resources in side link resource pool b (which can be referred to as side link resource pool b)
  • the link resource pool a is larger than the side link resource pool b); it can also be compared based only on the frequency range or time range of the side link resource pool.
  • the time domain resources included in the side link resource pool a are 8 :00-12:00
  • the time domain resources included in the side link resource pool b are 14:00-16:00
  • the number of resources in the side link resource pool a is greater than the number of resources in the side link resource pool b , No restrictions.
  • the side link resource pool based on slice and QoS requirements can refer to the side link resource pool configured with the granularity of slice and QoS requirements.
  • different side links can be configured for different QoS requirements.
  • the slice information and QoS requirement information have a corresponding relationship with the side link resource pool, and the slice information (for example, slice type) and QoS requirement information (for example, PQI) can be indexed or searched for in the slice information.
  • the side link resource pool corresponding to the QoS requirement information on the slice.
  • the access network device may execute step 303 each time it receives the context information of the side link, or it may execute step 303 when a preset condition is met. For example, the access network device executes step 303 in a preset period, or the access network device executes step 303 when the received context information of the side link reaches a preset number, which is not limited.
  • the terminal sends the context information of the side link to the access network device, and the access network device configures the side link resource pool for D2D communication according to the context information of the side link. , Enabling the access network device to dynamically configure the side-link resource pool for D2D communication according to the resource requirements of the side-link, avoiding the unreasonable configuration of the side-link resource pool, for example, the configuration of the side-link resource pool If the size is too small, congestion occurs, or the configuration of the side link resource pool is too large, resulting in waste of resources, etc., thereby improving resource utilization.
  • the foregoing method before step 302, the foregoing method further includes:
  • the first terminal sends a first request message to the PCF, and receives a first response message from the PCF.
  • the first request message is used to request authorization of the first terminal to perform D2D communication
  • the first response message is used to indicate that the first terminal is authorized to perform D2D communication
  • the first request message carries information about the D2D service carried by the side link.
  • the information of the D2D service may be the service type of the D2D service, for example, V2V service or U2U service.
  • the first request message is used to request authorization of the first terminal to perform the D2D service carried by the side link, and the first response message is used to instruct the first terminal to be authorized to perform the D2D service carried by the side link.
  • the PCF receives the first request message, and sends a first response message to the first terminal according to the first request message.
  • the PCF may obtain the subscription information of the first terminal from the UDM after receiving the first request message.
  • the PCF can authorize the D2D communication of the first terminal; or, when the contract information shows that the first terminal has subscribed to the V2V service, the PCF authorizes the first terminal to perform V2V business.
  • the PCF authorizes the D2D service or D2D communication of the first terminal, and the first terminal reports the context information of the side link to the access network device after authorization, ensuring that the access network device receives The validity of the context information of the side link avoids inaccurate statistics caused by the invalid context information of the side link of the access network device, thereby enabling the access network device to more accurately configure the side link resource pool.
  • the foregoing method before step 302, further includes:
  • the first terminal sends a second request message to the PCF, and receives a second response message from the PCF;
  • the second request message carries the context information of the side link
  • the second request message is used to request authorization of the context information of the side link
  • the second response message is used to indicate the authorization of the context information of the side link.
  • authorizing the context information of the side link may refer to authorizing the first terminal to use the resources in the side link resource pool corresponding to the context information.
  • the context information is slice information
  • the resources in the side link resource pool corresponding to the context information refer to the resources in the side link resource pool of the slice identified by the slice information.
  • the context information is the QoS requirement information of the D2D service carried by the side link
  • the PCF receives the second request message, and sends a second response message to the first terminal according to the second request message.
  • the PCF receives a second request message, the second request message carries the slice information of the side link, and obtains the subscription information of the first terminal from UDM. If the subscription information shows that the first terminal has subscribed to the side If the slice identified by the slice information of the uplink, that is, the slice of the side link has been subscribed, the PCF sends a second response message to the first terminal.
  • the PCF receives a second request message that carries the QoS requirement information of the D2D service carried by the side link, and obtains the subscription information of the first terminal from the UDM. If the subscription information is The QoS parameter includes the QoS requirement parameter corresponding to the QoS requirement information of the D2D service carried by the side link, and the PCF sends a second response message to the first terminal.
  • the PCF authorizes the first terminal to use the resources in the sidelink resource pool corresponding to the context information, and the first terminal reports the sidelink context information to the access network device after authorization, ensuring The validity of the context information of the side link received by the access network device avoids inaccurate statistics caused by the invalid side link context information of the access network device, thereby enabling the access network device to configure more accurately Side link resource pool.
  • step 302 includes or replaces step 302a or 302b.
  • the first terminal sends the context information of the side link to the access network device.
  • congestion in the side link resource pool may mean that the available side link resources in the side link resource pool are less than or equal to the first threshold, or that the resources in the side link resource pool are seriously preempted.
  • the first terminal detects that the proportion of used resources in the side link resource pool is greater than the expected proportion through the detection mechanism of Carrier Sense Multiple Access with Collision Avoidance (CSMA/CA).
  • CSMA/CA Carrier Sense Multiple Access with Collision Avoidance
  • the used resource may refer to the resource for which data has already been transmitted.
  • the first threshold may be a positive integer, or it may be zero. For example, when the available side link resource in the side link resource pool is equal to 0, it indicates that there is no available side link resource in the side link resource pool, and the side link resource pool is congested.
  • the available side link resources may refer to unused side link resources.
  • the side link resource pool corresponding to the context information of the side link is the side link resource pool of the slice identified by the slice information.
  • the side link resource pool of V2V slices the side link resource pool of V2V slices.
  • the first terminal may determine whether the available side link resource in the side link resource pool of the side link resource pool is less than or equal to the first threshold to determine the side link of the side link slice.
  • the link resource pool is congested; or, the first terminal may receive congestion indication information from the access network device, and the congestion indication information may be used to indicate that the side link resource pool of the slice of the side link is congested. To limit.
  • the available side link resources in the side link resource pool can be sent by the access network device to the first terminal without limitation.
  • the side link resource pool corresponding to the context information of the side link is the The side link resource pool corresponding to the QoS requirement information.
  • the side link resource pool corresponding to the QoS requirement information may refer to the side link resource pool indexed or searched through the QoS requirement information, please refer to the aforementioned QoS requirement-based side link resource pool description.
  • the side link resource pool corresponding to the QoS requirement information is the side link resource pool b.
  • the first terminal may receive congestion indication information from the access network device, where the congestion indication information is used to indicate that the side link resource pool corresponding to the QoS requirement information of the D2D service carried by the side link is congested; Alternatively, the first terminal may also determine whether the side link resource pool corresponding to the QoS requirement information is determined by determining whether the available side link resource in the side link resource pool corresponding to the QoS requirement information is less than or equal to the first threshold. Congestion occurs.
  • the available side link resources in the side link resource pool can be sent by the access network device to the first terminal without limitation.
  • the side link resource corresponding to the context information of the side link is the side link resource pool corresponding to the QoS requirement information on the slice identified by the slice information.
  • the first terminal sends the context information of the side link to the access network device.
  • the communication status of the side link can be used to characterize the communication quality of the side link.
  • the communication status may include parameters for characterizing communication quality, for example, the signal interference of the side link, the signal strength or quality of the side link, and the QoS implementation status of the side link (QoS achievement).
  • the QoS implementation of the side link may include: the data packet delay of the side link, the packet error rate of the side link, and other QoS implementations.
  • the communication status of the side link meeting the preset condition can be used to characterize that the communication quality of the side link is poor, or the communication quality of the side link does not meet the requirements of normal communication (or D2D communication, or business, etc.). ) Is not restricted.
  • the communication state of the side link that satisfies the preset condition can be divided into the following situations according to different communication states:
  • Case 1 When the communication state is the QoS realization of the side link, the communication state of the side link meets the preset condition, and the QoS realization of the side link does not meet the D2D carried by the side link The QoS requirements of the business.
  • the QoS implementation situation may be sent by the application server to the first terminal, which is not limited.
  • the QoS implementation of the side link does not meet the QoS requirements of the D2D service carried by the side link can refer to the side link Any parameter in the QoS implementation of the link does not meet the QoS requirement.
  • Case 2 When the communication state is the signal strength of the side link, the communication state of the side link satisfies the preset condition that the signal strength of the side link is less than the preset strength threshold.
  • Case 3 When the communication state is the signal quality of the side link, the communication state of the side link satisfies the preset condition that the signal quality of the side link is less than the preset quality threshold.
  • Case 4 When the communication state is the signal interference of the side link, the communication state of the side link satisfies the preset condition that the signal interference of the side link is greater than the preset interference threshold.
  • this application is not limited to the several cases listed above, and can also include various combinations between the above cases, for example, the combination of cases 2 and 3, that is, the communication status includes the signal strength of the side link and The signal quality, the communication state of the side link meeting the preset condition includes: the signal strength of the side link is less than a preset strength threshold; and/or the signal quality of the side link is less than the preset quality threshold.
  • the foregoing method further includes:
  • the first terminal sends the first indication information to the access network device or the PCF.
  • the first indication information may be used to indicate the end of communication on the side link, or the end of the D2D service carried by the side link, or stop data transmission on the side link, without limitation.
  • the interruption of the side line link may mean that the first terminal does not receive or send data or signaling through the side line link within a preset time period.
  • the first terminal does not receive a PC5 signaling (PC5-Signalling) message through the side link within 1 second.
  • keep-alive functionality can be used to maintain the side link, which can be implemented by periodically sending PC5-S messages.
  • deactivating the side link may refer to releasing the side link, and specifically may be understood as releasing the context information of the side link.
  • the first terminal sends a deactivation command to the second terminal, and the deactivation command is used to deactivate the side link.
  • the first terminal receives a deactivation command from the second terminal, and the deactivation command is used to deactivate the side link.
  • the above method may further include: the access network device receives the first indication information, and reconfigures the side link resource pool used for D2D communication according to the first indication information.
  • reconfiguration can also be referred to as updating, without limitation.
  • the access network device updates the upper row of the V2V slice after receiving the first indication information.
  • Link statistics For example, before receiving the first indication information, the number of uplink uplinks in the V2V slice is 10; after receiving the first indication information, the number of uplink uplinks in the V2V slice is updated, and the number of uplink uplinks in the V2V slice is updated. The number after is 9. Further, the access network device reconfigures the side link resource pool used for D2D communication according to the updated number of side links.
  • the access network device adjusts the side uplink resource pool of each slice in combination with the number of upper uplink links on the U2U slice and the updated number of upper uplink links on the V2V slice. For details, please refer to the subsequent step 303. The implementation method of, will not be repeated here.
  • the foregoing method further includes:
  • the first terminal When the first terminal switches across the access network equipment, the first terminal sends second indication information to the access network equipment or the PCF.
  • the second indication information may be used to indicate that the first terminal is handed over across the access network device, or the first terminal is handed over to another access network device, which is not limited.
  • the first terminal may send the second indication information to the access network device of the first terminal before the switch across the access network device occurs. For example, the first terminal receives the handover command, and the handover command is used to instruct the first terminal to switch to the target access network device. At this time, the first terminal sends the second terminal to the source access network device or PCF of the first terminal. Instructions. In other words, when the first terminal receives the handover command for instructing handover to the target access network device, it indicates that the first terminal has switched across the access network device.
  • the above method may further include: the access network device receives the second indication information, and reconfigures the side link resource pool used for D2D communication according to the second indication information.
  • reconfiguration can also be referred to as updating, without limitation.
  • the access network device updates the upper row of the V2V slice after receiving the second indication information.
  • the access network device reconfigures the side link pool for D2D communication according to the updated statistics information of the side link. For details, please refer to the relevant examples of the above first indication information, which will not be repeated here.
  • the foregoing method further includes:
  • the access network device sends the information of the side link resource pool.
  • the terminal can use the resources in the side-link resource pool to establish a side link with other terminals, so as to realize the communication between the two terminals. D2D communication.
  • the access network device may send the information of the side link resource pool in a broadcast manner, or send the information of the side link resource pool in a unicast manner.
  • the access network device carries the information of the side link resource pool through a system information block (SIB), and broadcasts the SIB.
  • SIB system information block
  • the side link resource pool information may be frequency domain resource information, for example, information used to indicate 100-120MHz; it may also be time domain resource information, for example, used to indicate that the time is 08:00- 12:00 (that is, 8 o'clock to 12 o'clock) information; it can also be information about frequency domain resources and information about time domain resources, which is not limited.
  • the information of the sidelink resource pool can be used by the terminal with the Uu port in the idle or connected state to use the resources in the sidelink resource pool to establish sidelinks with other terminals to achieve Direct communication between two terminals.
  • step 303 includes 303a and 303b.
  • the access network device determines the distribution of the side link used for D2D communication according to the context information of the side link.
  • the access network device configures a side link resource pool for D2D communication according to the distribution situation.
  • a slice-based side link resource pool is taken as an example, and the context information of the side link is a V2V slice as an example. It is assumed that the access network device before receiving the context information of the side link , The number of side uplinks on the V2V slice is 9, the number of side uplinks on the U2U slice is 3, the side uplink resource pool of the V2V slice is all time domain resources with a frequency of 100-120MHz, U2U The side link resource pool of the slice is all time domain resources with a frequency of 120-130 MHz; after receiving the context information of the side link, the access network device determines that the number of side links on the V2V slice is 10.
  • the number of side uplinks on the U2U slice is 3, then the side uplink resource pool of the V2V slice configured by the access network device is all time domain resources with a frequency of 100-122MHz, and the side link of the U2U slice The resource pool is all time domain resources with a frequency of 122-130 MHz.
  • FIG. 4 shows a schematic flowchart of another communication method according to an embodiment of the present application, as described below.
  • the first terminal obtains context information of the side link.
  • the side link can be used for D2D communication between the first terminal and the second terminal.
  • the first terminal sends a second request message to the PCF.
  • the second request message carries the context information of the side link, and the second request message may be used to request the first terminal to be authorized to use the resource corresponding to the context information.
  • the PCF sends a second response message to the first terminal according to the second request message.
  • the second response message is used to indicate that the first terminal is authorized to use the resource corresponding to the context information.
  • step 403 the above method further includes 404a or 404b.
  • the PCF sends the context information of the side link to the access network device of the first terminal.
  • the first terminal After receiving the second response message, the first terminal sends the context information of the side link to the access network device.
  • the access network device configures a sidelink resource pool for D2D communication according to the context information of the sidelink.
  • step 405 reference may be made to the related description of step 303, which will not be repeated.
  • the side link, context information, D2D communication, resources corresponding to the context information, the second request message, etc. can all refer to the related description in the embodiment shown in FIG. 3, and will not be repeated.
  • the first terminal after the first terminal is authorized by the PCF, the first terminal sends the context information of the side link to the access network device to ensure the validity of the context information of the side link, thereby Further improve the accuracy of configuring the side link resource pool based on the context information of the side link; the access network device configures the side link resource pool for D2D communication according to the context information of the side link, so that the access network
  • the device can dynamically configure the side-link resource pool for D2D communication according to the resource requirements of the side-link, avoiding unreasonable configuration of the side-link resource pool. For example, if the configuration of the side-link resource pool is too small, congestion may occur. Or the configuration of the side link resource pool is too large, resulting in waste of resources, etc.
  • the foregoing method further includes:
  • the PCF receives the first indication information, where the first indication information is used to indicate the end of the communication of the aforementioned side link;
  • the PCF performs charging statistics on the first terminal according to the first indication information; and/or,
  • the PCF sends the first indication information to the access network device of the first terminal.
  • the access network device can reconfigure the sidelink resource pool used for D2D communication according to the first indication information.
  • the access network device can reconfigure the sidelink resource pool used for D2D communication according to the first indication information. For details, refer to the related description in the embodiment shown in FIG. 3, and details are not repeated here.
  • the above-mentioned PCF performs charging statistics on the first terminal according to the first indication information, which may include: the PCF combines the second request message and the first indication information in 402 to determine the length of the D2D communication time of the first terminal, based on the time length The D2D communication of the first terminal is charged. Further, the PCF can also perform charging in combination with QoS requirement information or slice information. It should be noted that different QoS requirements and different slices can be charged differently.
  • the foregoing method further includes:
  • the PCF receives the second indication information, where the second indication information is used to indicate that the first terminal has a handover across the access network device;
  • the PCF sends second indication information to the access network device of the first terminal before the cross-access network device handover occurs.
  • the access network device can reconfigure the sidelink resource pool used for D2D communication according to the second indication information.
  • the access network device can reconfigure the sidelink resource pool used for D2D communication according to the second indication information.
  • the access network device can reconfigure the sidelink resource pool used for D2D communication according to the second indication information.
  • the methods and/or steps implemented by the terminal device or the network device may also be implemented by components (such as a chip or a circuit) that can be used for the terminal device or the network device.
  • an embodiment of the present application also provides a communication device, which is used to implement the foregoing various methods.
  • the communication device may be the terminal device in the foregoing method embodiment, for example, a sending end terminal device or a receiving end terminal device, or a device containing the foregoing terminal device, such as various types of vehicles, or a device included in the foregoing terminal device, such as System chip; or, the communication device may be the network device in the foregoing method embodiment, or a device included in the foregoing network device, such as a system chip.
  • the communication device includes corresponding modules, units, or means for realizing the above-mentioned methods, and the modules, units, or means can be realized by hardware, by software, or by hardware.
  • the hardware or software includes one or more modules or units corresponding to the above-mentioned functions. Whether a certain function is executed by hardware or computer software-driven hardware depends on the specific application and design constraint conditions of the technical solution. Professionals and technicians can use different methods for each specific application to implement the described functions, but such implementation should not be considered beyond the scope of this application.
  • the embodiments of the present application may divide the communication device into functional modules according to the foregoing method embodiments.
  • each functional module may be divided corresponding to each function, or two or more functions may be integrated into one processing module.
  • the above-mentioned integrated modules can be implemented in the form of hardware or software functional modules. It should be noted that the division of modules in the embodiments of the present application is illustrative, and is only a logical function division, and there may be other division methods in actual implementation.
  • FIG. 5 is a schematic structural diagram of a communication device according to an embodiment of the application.
  • the communication device 50 shown in FIG. 5 includes one or more processors 501, a communication bus 502, and at least one communication interface (in FIG. 5, it is only an example that includes a communication interface 504 and a processor 501 as an example. ).
  • the communication device 50 further includes a memory 503.
  • the processor 501 may be a general-purpose central processing unit (CPU), a microprocessor, an application-specific integrated circuit (for implementation), or one or more programs for controlling this application Implementation of integrated circuits.
  • CPU central processing unit
  • microprocessor for implementation
  • application-specific integrated circuit for implementation
  • programs for controlling this application Implementation of integrated circuits for controlling this application Implementation of integrated circuits.
  • the communication bus 502 may be a peripheral component interconnect standard (PCI) bus or an extended industry standard architecture (EISA) bus, etc.
  • PCI peripheral component interconnect standard
  • EISA extended industry standard architecture
  • the bus can be divided into address bus, data bus, control bus and so on. For ease of presentation, only one thick line is used to represent in FIG. 5, but it does not mean that there is only one bus or one type of bus.
  • the communication bus 502 is used to connect different components in the communication device 50 so that different components can communicate.
  • the communication interface 504 may be a transceiver module for communicating with other devices or communication networks, such as Ethernet, radio access network (RAN), wireless local area networks (WLAN), and so on.
  • the transceiver module may be a device such as a transceiver or a transceiver.
  • the communication interface 504 may also be a transceiver circuit located in the processor 501 to implement signal input and signal output of the processor.
  • the memory 503 may be a device having a storage function.
  • it can be read-only memory (ROM) or other types of static storage devices that can store static information and instructions, random access memory (RAM), or other types that can store information and instructions
  • Dynamic storage devices can also be electrically erasable programmable read-only memory (EEPROM), compact disc read-only memory (CD-ROM) or other optical disk storage, optical disc storage ( Including compact discs, laser discs, optical discs, digital versatile discs, Blu-ray discs, etc.), magnetic disk storage media or other magnetic storage devices, or can be used to carry or store desired program codes in the form of instructions or data structures and can be stored by a computer Any other media taken, but not limited to this.
  • the memory may exist independently, and is connected to the processor through the communication line 502. The memory can also be integrated with the processor.
  • the memory 503 is used to store computer instructions for executing the solution of the present application, and the processor 501 controls the execution.
  • the processor 501 is configured to execute computer instructions stored in the memory 503, so as to implement the resource configuration method provided in the embodiment of the present application.
  • the processor 501 may also perform processing-related functions in the resource configuration method provided in the following embodiments of the present application, and the communication interface 504 is responsible for communicating with other devices or communication networks.
  • the application embodiment does not specifically limit this.
  • the computer instructions in the embodiments of the present application may also be referred to as application program codes or instructions, which are not specifically limited in the embodiments of the present application.
  • the processor 501 may include one or more CPUs, such as CPU0 and CPU1 in FIG. 5.
  • the communication device 50 may include multiple processors, such as the processor 501 and the processor 508 in FIG. 5. Each of these processors can be a single-CPU (single-CPU) processor or a multi-core (multi-CPU) processor.
  • the processor here may refer to one or more devices, circuits, and/or processing cores for processing data (for example, computer instructions).
  • the communication device 50 may further include an output device 505 and an input device 506.
  • the output device 505 communicates with the processor 501 and can display information in a variety of ways.
  • the output device 505 may be a liquid crystal display (LCD), a light emitting diode (LED) display device, a cathode ray tube (CRT) display device, or a projector (projector) Wait.
  • the input device 506 communicates with the processor 501 and can receive user input in a variety of ways.
  • the input device 506 may be a mouse, a keyboard, a touch screen device, a sensor device, or the like.
  • the processor 501 may invoke the computer instructions stored in the memory 503 to cause the communication device 50 to execute the method executed by the first terminal in the foregoing method embodiment. Therefore, the technical effects that can be obtained can refer to the above-mentioned method embodiments, which will not be repeated here.
  • the processor 501 may invoke the computer instructions stored in the memory 503 to cause the communication apparatus 50 to execute the method executed by the access network device in the foregoing method embodiment. Therefore, the technical effects that can be obtained can refer to the above-mentioned method embodiments, which will not be repeated here.
  • the processor 501 may call the computer instructions stored in the memory 503 to cause the communication device 50 to execute the method executed by the PCF in the foregoing method embodiment. Therefore, the technical effects that can be obtained can refer to the above-mentioned method embodiments, which will not be repeated here.
  • Fig. 6 is a schematic structural diagram of another communication device according to an embodiment of the present application.
  • the communication device 60 shown in FIG. 6 includes a processing unit 601 and a transceiving unit 602.
  • the transceiver unit 602 may also be called a transceiver module to implement sending and/or receiving functions, for example, it may be a transceiver circuit, a transceiver, a transceiver, or a communication interface.
  • the processing unit 601 may also be referred to as a processing module, for example, it may be at least one processor, and is not limited in advance.
  • the communication device 60 may be used to implement the function of the first terminal in the method embodiment shown in FIG. 3 or 4.
  • the processing unit 601 is configured to obtain context information of a side-link, where the side-link is used for D2D communication between the first terminal and the second terminal.
  • the transceiver unit 602 is configured to send context information of the side link to an access network device, where the context information of the side link is used by the access network device to configure side link resources for D2D communication Pool.
  • the context information of the side link may include one or more of the following: slice information of the side link, and QoS requirement information of the D2D service carried by the side link.
  • the slice information may include one or more of the following: the slice service type of the side link, and the slice identifier of the side link.
  • the transceiver unit 602 is further configured to: send a first request message to the policy control function PCF, and receive a first response message from the PCF.
  • the first request message is used to request authorization of the first terminal to perform D2D communication
  • the first response message is used to indicate that the first terminal is authorized to perform D2D communication
  • the first request message carries Information about the D2D service carried by the side link
  • the first request message is used to request authorization of the first terminal to perform the D2D service carried by the side link
  • the first response message is used to Indicate that the first terminal is authorized to perform the D2D service carried by the side link.
  • the transceiver unit 602 is further configured to: send a second request message to the PCF, and receive a second response message from the PCF.
  • the second request message carries the context information of the side link
  • the second request message is used to request authorization of the first terminal to use the resource corresponding to the context information
  • the second response message It is used to indicate that the first terminal is authorized to use the resource corresponding to the context information.
  • the transceiving unit 602 is specifically configured to: send the context information of the side link to the access network device when the side link resource pool corresponding to the context information of the side link is congested Or, when the communication state of the side link meets a preset condition, send the context information of the side link to the access network device.
  • the transceiving unit 602 is further configured to send first indication information to the access network device or PCF when the side link is interrupted or the side link is deactivated.
  • An indication information is used to indicate the end of the communication of the side link; or, when the first terminal switches across the access network equipment, the second indication information is sent to the access network equipment or the PCF, so The second indication information is used to indicate that the first terminal is handed over across the access network equipment.
  • the communication device 60 may be used to implement the function of the access network device in the method embodiment shown in FIG. 3 or 4.
  • the transceiver unit 602 is configured to receive context information of a side-link, where the side-link is used for D2D communication between the first terminal and the second terminal.
  • the processing unit 601 is configured to configure a side link resource pool for D2D communication according to the context information of the side link.
  • the context information of the side link may include one or more of the following: slice information of the side link, and QoS requirement information of the D2D service carried by the side link.
  • the side link resource pool may include: a slice-based side link resource pool, a PQI-based side link resource pool, or a slice and PQI-based side link resource pool.
  • the transceiving unit 602 is further configured to receive indication information from the first terminal, where the indication information is used to indicate the end of communication on the side link, or the indication information is used to indicate the first terminal A terminal switches across access network devices; the processing unit 601 is further configured to reconfigure the side link resource pool used for D2D communication according to the instruction information.
  • the transceiving unit 602 is specifically configured to: receive the context information of the side link from the first terminal; or, receive the context information of the side link from the PCF.
  • the communication device 60 may be used to implement the function of the PCF in the method embodiment shown in FIG. 3 or 4.
  • the transceiver unit 602 is configured to receive the first request message from the first terminal;
  • the processing unit 601 is configured to send a first response message to the first terminal according to the first request message.
  • the first request message is used to request authorization of the first terminal to perform D2D communication
  • the first response message is used to indicate that the first terminal is authorized to perform D2D communication
  • the first request message carries D2D service information
  • the first request message is used to request authorization of the first terminal to perform the D2D service
  • the first response message is used to indicate that the first terminal is authorized to perform the D2D service.
  • the D2D service is used to indicate that the first terminal is authorized to perform the D2D service.
  • the communication device 60 may be used to implement the function of the PCF in the method embodiment shown in FIG. 3 or 4.
  • the transceiving unit 602 is configured to receive a second request message from the first terminal, the second request message carrying context information of a sideline link, and the sideline link is used for the first terminal and the second terminal In the D2D communication between the two, the second request message is used to request the first terminal to be authorized to use the resource corresponding to the context information.
  • the processing unit 601 is configured to send a second response message to the first terminal according to the second request message, where the second response message is used to indicate that the first terminal is authorized to use the resource corresponding to the context information.
  • the context information of the side link may include one or more of the following: slice information of the side link, and QoS requirement information of the D2D service carried by the side link.
  • the transceiver unit 602 is further configured to send the context information of the side link to the access network device of the first terminal.
  • the transceiver unit 602 is further configured to receive first indication information, where the first indication information is used to indicate the end of the side link communication; the processing unit 601 is further configured to receive first indication information according to the first indication information. Perform charging statistics on the first terminal, and/or send the first indication information to the access network device of the first terminal through the transceiver unit 602.
  • the transceiving unit 602 is further configured to: receive second indication information, where the second indication information is used to indicate that a handover across access network devices occurs to the first terminal; The access network device before the handover of the cross-access network device sends the second indication information.
  • the processing module 601 is used to receive or send the above-mentioned information or message through the transceiver module 602. It can be understood that the transceiver module 602 receives the signal carrying the above-mentioned information or message sent by the outside world, and sends it with or without signal processing. Give processing to the processing module 601.
  • the processing module 601 is configured to receive the above information or message through the transceiver module 602. It can be understood that the transceiver module 602 receives the signal carrying the above information or message sent by the outside world, and then sends it to The processing module 601 processes. This is a unified description, and will not be repeated in the following.
  • the communication device 60 is presented in the form of dividing various functional modules in an integrated manner.
  • the "unit” or “module” herein can refer to a specific ASIC, circuit, processor and memory that executes one or more software or firmware programs, integrated logic circuit, and/or other devices that can provide the above-mentioned functions.
  • the communication device 60 may take the form of the communication device 50 shown in FIG. 4.
  • the functions/implementation process of the processing unit 601 and the transceiving unit 602 in FIG. 6 may be implemented by the processor 501 in the communication device 50 shown in FIG. 5 calling computer instructions stored in the memory 503.
  • the function/implementation process of the processing unit 601 in FIG. 6 can be implemented by the processor 501 in the communication device 50 shown in FIG. 5 calling computer instructions stored in the memory 503, and the function/implementation process of the transceiver unit 602 in FIG. 6
  • the implementation process can be implemented through the communication interface 504 in the communication device 50 shown in FIG. 5.
  • the embodiment of the present application provides a computer-readable storage medium on which computer instructions are stored.
  • the computer instructions When the computer instructions are executed, the first terminal, the access network device or the PCF in the method embodiment shown in FIG. 3 or 4 is executed. Actions.
  • the embodiments of the present application provide a computer program product containing computer instructions that, when executed, execute the actions of the first terminal, the access network device or the PCF in the method embodiment shown in FIG. 3 or 4 above.
  • the communication system includes an access network device and may also include a PCF. Further, it may also include a first terminal.
  • the access network device may be used to execute the method of the access network device in the embodiment shown in FIG. 3 or 4
  • the PCF may be used to execute the method of the PCF in the embodiment shown in FIG. 3 or 4.
  • the foregoing embodiments may be implemented in whole or in part by software, hardware (such as circuits), firmware, or any other combination.
  • the above-mentioned embodiments may be implemented in the form of a computer program product in whole or in part.
  • the computer program product includes one or more computer instructions or computer programs.
  • the computer may be a general-purpose computer, a special-purpose computer, a computer network, or other programmable devices.
  • the computer instructions may be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another computer-readable storage medium.
  • the computer instructions may be transmitted from a website, computer, server, or data center. Transmission to another website, computer, server or data center via wired (such as infrared, wireless, microwave, etc.).
  • the computer-readable storage medium may be any available medium that can be accessed by a computer or a data storage device such as a server or a data center that includes one or more sets of available media.
  • the usable medium may be a magnetic medium (for example, a floppy disk, a hard disk, and a magnetic tape), an optical medium (for example, a DVD), or a semiconductor medium.
  • the semiconductor medium may be a solid state drive.
  • At least one refers to one or more, and “multiple” refers to two or more.
  • the following at least one item (a)” or similar expressions refers to any combination of these items, including any combination of a single item (a) or a plurality of items (a).
  • at least one of a, b, or c can mean: a, b, c, ab, ac, bc, or abc, where a, b, and c can be single or multiple .
  • the size of the sequence number of the above-mentioned processes does not mean the order of execution, and the execution order of each process should be determined by its function and internal logic, and should not correspond to the embodiments of the present application.
  • the implementation process constitutes any limitation.
  • the disclosed system, device, and method can be implemented in other ways.
  • the device embodiments described above are merely illustrative.
  • the division of the units is only a logical function division, and there may be other divisions in actual implementation, for example, multiple units or components may be combined It can be integrated into another system, or some features can be ignored or not implemented.
  • the displayed or discussed mutual coupling or direct coupling or communication connection may be indirect coupling or communication connection through some interfaces, devices or units, and may be in electrical, mechanical or other forms.
  • the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the objectives of the solutions of the embodiments.
  • the functional units in the various embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units may be integrated into one unit.
  • the function is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer readable storage medium.
  • the technical solution of the present application essentially or the part that contributes to the existing technology 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 media include: U disk, mobile hard disk, read-only memory (read-only memory, ROM), random access memory (random access memory, RAM), magnetic disks or optical disks and other media that can store program codes. .

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Abstract

本申请提供了一种通信方法和通信装置。该通信方法包括：第一终端获取侧行链路的上下文信息，所述侧行链路用于所述第一终端与第二终端之间的D2D通信；所述第一终端向接入网设备发送所述侧行链路的上下文信息，所述侧行链路的上下文信息用于所述接入网设备配置用于D2D通信的侧行链路资源池，这样接入网设备可以根据侧行链路的上下文信息配置侧行链路资源池，使得侧行链路资源池配置更合理，从而满足不同业务的QoS需求，进而提高通信效率。

Description

通信方法和通信装置 技术领域
本申请涉及通信领域，更具体地，涉及一种通信方法和通信装置。
背景技术
随着移动通信的高速发展，新业务类型，如视频聊天、虚拟现实(virtual reality，VT)/增强现实(augmented reality，AR)等数据业务的普遍使用提高了用户对带宽的需求。设备到设备(Device-to-Device，D2D)通信允许用户设备(User Equipment，UE)之间直接进行通信。目前，D2D通信已经应用于4G网络系统中。
Uu口处于空闲态的用户设备可以基于侧行链路资源池中的资源进行不同业务的D2D通信，换言之，不同业务的D2D通信可以共享侧行链路资源池中的资源。但是，由于不同业务的服务质量(quality of service，QoS)需求不同，因此，侧行链路资源池中的资源可能无法满足不同业务的QoS需求。
发明内容
本申请提供一种通信方法和通信装置，能够更合理地配置侧行链路资源池，从而满足不同业务的QoS需求。
第一方面，提供了一种通信方法，包括：第一终端获取侧行链路的上下文信息，所述侧行链路用于所述第一终端与第二终端之间的D2D通信；所述第一终端向接入网设备发送所述侧行链路的上下文信息，所述侧行链路的上下文信息用于所述接入网设备配置用于D2D通信的侧行链路资源池。该方法能够实现接入网设备更合理地配置侧行链路资源池，从而满足不同业务的QoS需求。该侧行链路的上下文信息可以用于表征该侧行链路所承载或即将承载的D2D业务的资源需求，例如，切片需求或QoS需求。
可选地，侧行链路的上下文信息包括以下一种或多种：所述侧行链路的切片信息，所述侧行链路所承载的D2D业务的QoS需求信息。
可选地，所述切片信息包括以下一种或多种：所述侧行链路的切片服务类型，和所述侧行链路的切片标识。
在另一种可能的实现方式中，在所述第一终端向接入网设备发送所述侧行链路的上下文信息之前，所述方法还包括：所述第一终端向策略控制功能PCF发送第一请求消息，并接收来自所述PCF的第一响应消息；其中，所述第一请求消息用于请求授权所述第一终端进行D2D通信，所述第一响应消息用于指示授权所述第一终端进行D2D通信；或者，所述第一请求消息携带有所述侧行链路所承载的D2D业务的信息，所述第一请求消息用于请求授权所述第一终端进行所述侧行链路所承载的D2D业务，所述第一响应消息用于指示授权所述第一终端进行所述侧行链路所承载的D2D业务。通过PCF授权第一终端进行D2D通信或D2D业务，可以保证第一终端上报的侧行链路的上下文信息的有效性，避 免在未授权第一终端进行D2D通信或D2D业务的情况下，第一终端仍上报该侧行链路的上下文信息，使得接入网设备对侧行链路的上下文信息统计不准确，进而导致侧行链路资源池配置不合理。
在另一种可能的实现方式中，在所述第一终端向接入网设备发送所述侧行链路的上下文信息之前，所述方法还包括：所述第一终端向PCF发送第二请求消息，并接收来自所述PCF的第二响应消息；其中，所述第二请求消息携带有所述侧行链路的上下文信息，所述第二请求消息用于请求授权所述第一终端使用所述上下文信息对应的资源，所述第二响应消息用于指示授权所述第一终端使用所述上下文信息对应的资源。
在另一种可能的实现方式中，所述第一终端向接入网设备发送所述侧行链路的上下文信息，包括：当所述侧行链路的上下文信息对应的侧行链路资源池发生拥塞时，所述第一终端向所述接入网设备发送所述侧行链路的上下文信息；或者，
当所述侧行链路的通信状态满足预设条件时，所述第一终端向所述接入网设备发送所述侧行链路的上下文信息。
在另一种可能的实现方式中，所述方法还包括：当所述侧行链路发生中断，或去激活所述侧行链路时，所述第一终端向所述接入网设备或PCF发送第一指示信息，所述第一指示信息用于指示所述侧行链路的通信结束；或者，当所述第一终端发生跨接入网设备的切换时，所述第一终端向所述接入网设备或PCF发送第二指示信息，所述第二指示信息用于指示所述第一终端发生跨接入网设备的切换。
第二方面，提供了一种通信方法，包括：接入网设备接收侧行链路的上下文信息，所述侧行链路用于第一终端与第二终端之间的D2D通信；所述接入网设备根据所述侧行链路的上下文信息，配置用于D2D通信的侧行链路资源池。该方法能够实现接入网设备更合理地配置侧行链路资源池，从而满足不同业务的QoS需求。该侧行链路的上下文信息可以用于表征该侧行链路所承载或即将承载的D2D业务的资源需求，例如，切片需求或QoS需求。
可选地，所述侧行链路的上下文信息包括以下一种或多种：所述侧行链路的切片信息，所述侧行链路所承载的D2D业务的QoS需求信息。
可选地，所述侧行链路资源池包括：基于切片的侧行链路资源池，基于PQI的侧行链路资源池，或者，基于切片和PQI的侧行链路资源池。
在另一种可能的实现方式中，所述方法还包括：所述接入网设备接收来自所述第一终端的指示信息，所述指示信息用于指示所述侧行链路的通信结束，或者所述指示信息用于指示所述第一终端发生跨接入网设备的切换；所述接入网设备根据所述指示信息，重新配置用于D2D通信的侧行链路资源池。
在另一种可能的实现方式中，所述接入网设备接收侧行链路的上下文信息，包括：所述接入网设备接收来自所述第一终端的所述侧行链路的上下文信息；或者，所述接入网设备接收来自PCF的所述侧行链路的上下文信息。
第三方面，提供了一种通信方法，包括：策略控制功能PCF接收来自第一终端的第一请求消息；所述PCF根据所述第一请求消息，向所述第一终端发送第一响应消息；其中，所述第一请求消息用于请求授权所述第一终端进行D2D通信，所述第一响应消息用于指示授权所述第一终端进行D2D通信；或者，所述第一请求消息携带有D2D业务的信 息，所述第一请求消息用于请求授权所述第一终端进行所述D2D业务，所述第一响应消息用于指示授权所述第一终端进行所述D2D业务。通过PCF授权第一终端进行D2D通信或D2D业务，可以保证第一终端上报的侧行链路的上下文信息的有效性，避免在未授权第一终端进行D2D通信或D2D业务的情况下，第一终端仍上报该侧行链路的上下文信息，使得接入网设备对侧行链路的上下文信息统计不准确，进而导致侧行链路资源池配置不合理。
第四方面，提供了一种通信方法，包括：策略控制功能PCF接收来自第一终端的第二请求消息，所述第二请求消息携带有侧行链路的上下文信息，所述侧行链路用于所述第一终端与第二终端之间的D2D通信，所述第二请求消息用于请求授权所述第一终端使用所述上下文信息对应的资源；所述PCF根据所述第二请求消息，向所述第一终端发送第二响应消息，所述第二响应消息用于指示授权所述第一终端使用所述上下文信息对应的资源。通过PCF授权第一终端使用所述上下文信息对应的资源，可以保证第一终端上报的侧行链路的上下文信息的有效性，避免在未授权第一终端使用所述上下文信息对应的资源的情况下，接入网设备仍统计所述上下文信息，进而导致侧行链路资源池配置不合理。
在一种可能的实现方式中，所述侧行链路的上下文信息包括以下一种或多种：所述侧行链路的切片信息，所述侧行链路所承载的D2D业务的QoS需求信息。
在另一种可能的实现方式中，所述方法还包括：所述PCF向所述第一终端的接入网设备发送所述侧行链路的上下文信息。
在另一种可能的实现方式中，所述方法还包括：所述PCF接收第一指示信息，所述第一指示信息用于指示所述侧行链路的通信结束；所述PCF根据所述第一指示信息对所述第一终端进行计费统计，和/或，所述PCF向所述第一终端的接入网设备发送所述第一指示信息。
在另一种可能的实现方式中，所述方法还包括：所述PCF接收第二指示信息，所述第二指示信息用于指示所述第一终端发生跨接入网设备的切换；所述PCF向所述第一终端在发生所述跨接入网设备的切换之前的接入网设备发送所述第二指示信息。
第五方面，提供了一种通信装置，所述通信装置包括处理模块和收发模块，处理模块可以通过收发模块接收或发送消息。所述处理模块可用于执行上述任一方面及实现方式的方法。
在一种可能的实现方式中，该通信装置可以为上述第一方面中的第一终端，或者也可以是上第一终端内的芯片或片上系统。该通信装置可以包括实现上述第一方面中的方法相应的模块、单元、或手段(means)，该模块、单元、或means可以通过硬件实现，软件实现，或者通过硬件执行相应的软件实现。该硬件或软件包括一个或多个与上述功能相对应的模块或单元。
在另一种可能的实现方式中，该通信装置可以为上述第二方面中的接入网设备，或接入网设备内的芯片或片上系统。该通信装置可以包括实现上述第二方面中的方法相应的模块、单元、或手段(means)，该模块、单元、或means可以通过硬件实现，软件实现，或者通过硬件执行相应的软件实现。该硬件或软件包括一个或多个与上述功能相对应的模块或单元。
在另一种可能的实现方式中，该通信装置可以为上述第三或第四方面中的PCF，或 PCF内的芯片或片上系统。该通信装置可以包括实现上述第三或第四方面中的方法相应的模块、单元、或手段(means)，该模块、单元、或means可以通过硬件实现，软件实现，或者通过硬件执行相应的软件实现。该硬件或软件包括一个或多个与上述功能相对应的模块或单元。
第六方面，提供了一种通信装置，包括：处理器，还可以包括存储器；该存储器用于存储计算机指令，当该处理器执行该指令时，以使该通信装置执行上述任一方面所述的方法。该通信装置可以为上述第一终端，或者上述第一终端内的装置，比如系统芯片；或者，该通信装置可以为上述接入网设备，或者上述接入网设备内的装置，比如系统芯片；或者，该通信装置可以为上述任一方面的PCF，或者上述任一方面的PCF内的装置，比如系统芯片。
第八方面，提供了一种计算机程序产品，所述计算机程序产品包括：计算机指令(也可以称为代码，或指令)，当所述计算机指令被运行时，使得执行上述任一方面任一种可能实现方式中的方法。
第九方面，提供了一种计算机可读存储介质，所述计算机可读存储介质存储有计算机指令(也可以称为代码，或指令)当其在计算机或处理器上运行时，使得计算机或处理器执行上述任一方面任一种可能实现方式中的方法。
第十三方面，提供一种通信系统，该通信系统包括上述第二方面的接入网设备，还可以包括第三或第四方面的PCF，还可以包括第一方面的第一终端。
附图说明
图1是一种D2D通信系统的架构示意图；
图2是一种5G通信系统的架构示意图；
图3是本申请实施例的一种通信方法的示意性流程图；
图4是本申请实施例的另一种通信方法的示意性流程图；
图5是本申请实施例的一种通信装置的示意性结构图；
图6是本申请实施例的另一种通信装置的示意性结构图。
具体实施方式
下面将结合附图，对本申请中的技术方案进行描述。
图1示出了一种D2D通信系统的架构示意图。如图1所示，该D2D通信系统包括：UE1，UE2，以及无线接入网络(Radio Access Network，RAN)设备。其中，UE1与UE2之间可以通过PC5口的通信链路进行通信，可以称为PC5口通信。UE1以及UE2与RAN之间可以通过Uu口的通信链路进行通信，可以称为Uu口通信。
其中，PC5口指的是两个UE之间的接口，Uu口指的是UE与RAN之间的接口。此外，PC5口的通信链路也可以称为侧行链路或D2D通信链路，用于数据面和控制面的信息传输，承载直接发现(Direct Discovery)、直接通信(Direct Communication)等消息。
其中，PC5口通信可以采用多种空口技术，例如，第五代(5th generation，5G)技术或长期演进(Long Term Evolution，LTE)技术。
UE：可以是终端、接入终端、用户单元、用户站、移动站、移动台、远方站、远程 终端、移动设备、用户终端、无线通信设备、用户代理或用户装置。终端还可以是蜂窝电话、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、可穿戴设备等，不予限制。
RAN设备：也可以称为接入网设备，主要负责空口侧的无线资源管理、服务质量管理、数据压缩和加密等功能。接入网设备可以包括各种形式的基站，例如：宏基站，微基站，中继站，接入点等。在采用不同的无线接入技术的系统中，具备基站功能的设备的名称可能会有所不同，例如，5G系统中的gNB，LTE系统中的演进型基站(evoled NodeB，eNB或eNodeB)，云无线接入网络(cloud radio access network，CRAN)场景下的无线控制器。此外，接入网设备还可以为中继站、接入点、车载设备、可穿戴设备以及未来5G网络中的接入网设备或者未来演进的公用陆地移动网(public land mobile network，PLMN)中的接入网设备，不予限制。
需要指出的是，图1所示的D2D通信架构可以基于5G通信系统，也可以基于LTE通信系统，或者未来通信系统，不予限制。
图2示出了一种5G通信系统的架构示意图。如图2所示，该通信系统包括：终端201、RAN设备202、用户面功能(user plane function，UPF)203、数据网络(data network，DN)204、认证服务器功能(authentication server function，AUSF)205、AMF206、会话管理功能(session management function，SMF)207、网络开放功能(network exposure function，NEF)208、网络功能库功能(network repository function，NRF)209、策略控制功能(policy control function，PCF)210、统一数据管理(udified data management，UDM)211和NSSF212。
终端201，主要通过无线空口接入网络并获得服务，终端通过空口和RAN设备202进行交互，通过非接入层信令(non-access stratum，NAS)和核心网的AMF206进行交互。
RAN202，主要负责终端201接入网络的空口资源调度和空口的连接管理。例如，5G系统中的gNB。
UPF203，主要负责终端中用户数据的转发和接收。例如，UPF可以从数据网络接收用户数据，并通过接入网设备传输给终端，还可以通过接入网设备从终端接收用户数据，转发到数据网络。UPF103中为终端提供服务的传输资源和调度功能由SMF207管理控制的。
AUSF205，主要负责对用户的鉴权、授权以保证用户是合法用户。
AMF206，主要负责信令处理部分，例如：接入控制、移动性管理、附着与去附着以及网关选择等功能，且AMF206还可以在为终端中的会话提供服务的情况下，会为该会话提供控制面的存储资源，以存储会话标识、与会话标识关联的SMF标识等。
SMF207，负责用户面网元选择，用户面网元重定向，因特网协议(internet protocol，IP)地址分配，承载的建立、修改和释放以及服务质量(quality of service，QoS)控制。
NEF208，用于负责移动网络能力的对外开放。
NRF209，用于负责网络功能的服务能力的动态注册以及网络功能发现。
PCF210，用于提供策略规则给控制层网络功能，同时负责获取与策略决策相关的用 户签约信息。
UDM211，用于统一数据管理，支持3GPP认证、用户身份操作、权限授予、注册和移动性管理等功能。
NSSF212，用于完成对终端的网络切片选择功能。
UDR213，负责终端签约数据的存储和提供，或者终端策略数据的存储和提供。
在该网络架构中，Nausf为AUSF205展现的基于服务的接口，Namf为AMF206展现的基于服务的接口，Nsmf为SMF207展现的基于服务的接口，Nnef为NEF208展现的基于服务的接口，Nnrf为NRF209展现的基于服务的接口，Npcf为PCF210展现的基于服务的接口，Nudm为UDM211展现的基于服务的接口，Nnssf为NSSF212展现的基于服务的接口，Nudr为UDR213展现的基于服务的接口。N1为UE201和AMF206之间的参考点，N2为RAN设备202和AMF206的参考点，用于NAS消息的发送等；N3为RAN202和UPF203之间的参考点，用于传输用户面的数据等；N4为SMF207和UPF203之间的参考点，用于传输例如N3连接的隧道标识信息，数据缓存指示信息，以及下行数据通知消息等信息；N6接口为UPF203和DN204之间的参考点，用于传输用户面的数据等。
下面对本申请涉及到的术语进行介绍。
切片，指的是将运营商的物理网络切分为多个逻辑网络以实现一网多用。切片可以使得运营商能够在一个物理网络之上构建多个专用的、虚拟的、隔离的、按需定制的逻辑网络，进而可以满足不同行业客户对网络能力的不同要求(如时延，带宽，连接数等)。
业务的QoS需求，用于表征该业务对QoS的需求或要求。该QoS需求可以包括QoS需求参数，例如，包延迟预算(packet delay budget)，误包率(packet error rate)，以及最大数据突发量(maximum data burst volume)等。例如，假设车辆到车辆(vehicle to vehicle，V2V)业务的QoS需求中各QoS需求参数的取值如下：包延迟预算为200ms，误包率为2％，则表明该V2V业务要求数据包时延低于200ms，误包率不高于2％。
需要说明的是，本申请下述实施例中各个设备之间的消息名字或消息中各参数的名字等只是一个示例，具体实现中也可以是其他的名字，本申请实施例对此不作具体限定。此外，对于相同或相似的步骤，名词等，各实施例之间可以相互参考，不予限制。
图3示出了本申请的一种通信方法的示意性流程图，如下所述。
301、第一终端获取侧行链路的上下文信息。
其中，该侧行链路可以用于第一终端与第二终端之间的D2D通信。侧行链路也可以称为D2D通信链路，还可以称为PC5通信链路，不予限制。PC5通信链路可以指的是基于PC5口的通信链路。
其中，该侧行链路的上下文信息可以用于表征该侧行链路所承载或即将承载的D2D业务的资源需求，例如，切片需求或QoS需求。具体地，该侧行链路的上下文信息可以包括以下一种或多种：该侧行链路的切片信息，该侧行链路所承载的D2D业务的QoS需求信息。
其中，侧行链路的切片信息可以用于标识该侧行链路的切片。该侧行链路的切片可以指的是该侧行链路所属的切片，即该侧行链路所占用的资源(例如，频域资源，时域资源) 所属的切片。例如，该侧行链路占用的频率属于预先划分给V2V切片的频率，那么该侧行链路所属的切片为该V2V切片。
具体地，该侧行链路的切片信息可以包括以下一种或多种：该侧行链路的切片服务类型，和该侧行链路的切片标识。
其中，切片服务类型可以为V2V切片，无人飞行载具(unmanned aerial vehicle，UAV)到无人飞行载具(UAV to UAV，U2U)切片，或用于手机与手机之间通信的切片等。V2V切片可以用于V2V通信，U2U切片可以用于无人机之间的通信。需要指出的是，若一个PLMN内仅存在一个V2V切片，那么该切片服务类型也可以用于识别切片。
其中，切片标识可以用于标识切片，例如，切片的名称，切片的编号等。具体地，切片标识可以是切片选择辅助信息(slice selection assistance information)。
其中，该侧行链路所承载的D2D业务可以指的是承载在该侧行链路上的D2D业务，即通过该侧行链路进行的D2D业务，例如，V2V业务，U2U业务。
进一步地，侧行链路所承载的D2D业务的QoS需求信息可以是侧行链路所承载的D2D业务的QoS需求中的QoS需求参数；或者，侧行链路所承载的D2D业务的QoS需求信息可以是侧行链路所承载的D2D业务的QoS需求的指示信息，例如，PC5 5G服务质量标识(PC5 5G QoS identifier，PQI)。
具体地，第一终端可以根据D2D业务类型确定QoS需求信息，D2D业务类型可以是V2V业务或U2U业务。例如，D2D业务类型与QoS需求信息之间存在对应关系，该对应关系可以预配置在第一终端，或者在第一终端进行注册时从网络侧获取该对应关系，不予限制。
302、第一终端向接入网设备发送侧行链路的上下文信息。
其中，该侧行链路的上下文信息用于接入网设备配置用于D2D通信的侧行链路资源池。具体地，第一终端可以通过核心网设备(例如，AMF、PCF等)向接入网设备发送该侧行链路的上下文信息，例如，第一终端通过NAS消息将侧行链路的上下文信息发送给AMF，然后AMF网元将该侧行链路的上下文信息发送给PCF，PCF在对第一终端进行授权后(详情可以参见后续PCF授权的相关描述)，可以由PCF通过AMF将该侧行链路的上下文信息发送给接入网设备，也可以由AMF在获知第一终端已授权后将侧行链路的上下文信息发送给接入网设备。显然，第一终端也可以直接将侧行链路的上下文信息通过无线资源控制(radio resource control，RRC)消息发送给接入网设备，不予限制。
相应地，接入网设备接收该侧行链路的上下文信息。例如，接入网设备接收直接来自第一终端的该侧行链路的上下文信息；或者，接入网设备接收来自PCF或AMF的该侧行链路的上下文信息。
此外，在步骤302中，第一终端可以周期性发送侧行链路的上下文信息，也可以采用事件触发的方式(详情可以参见步骤302a-302b的相关描述)发送侧行链路的上下文信息，不予限制。
需要说明的是，若第一终端的Uu口处于空闲态，那么第一终端可以在其与接入网设备之间Uu口变为连接态之后，再执行步骤302；或者，若第一终端的Uu口处于连接态，那么第一终端可以直接执行步骤302。
303、接入网设备根据侧行链路的上下文信息，配置用于D2D通信的侧行链路资源池。
其中，用于D2D通信的侧行链路资源池可以简称为侧行链路资源池，也可以称为侧行链路物理资源池。该侧行链路资源池可以指的是一组用于D2D通信的时域资源和/或频域资源的集合，即侧行链路资源池中的资源均可以用于D2D通信。
其中，侧行链路资源池的时域资源可以是时间范围，该时间范围可以通过时间段(例如，8:00-12:00)或时间长度(例如，4个小时，或40分钟等)来表示。侧行链路资源池的频域资源可以是频率范围，例如，110-128MHz。
示例性地，假设侧行链路资源池通过{时间范围，频率范围}＝{8:00-12:00，110-128MHz}来表征，那么该侧行链路资源池包括在频率110-128MHz上时间范围在8:00-12:00上的资源。
需要说明的是，该侧行链路资源池中的资源可以用于Uu口处于空闲态的终端之间的D2D通信，也可以用于Uu口处于连接态的终端之间的D2D通信。
具体地，侧行链路资源池可以包括：基于切片的侧行链路资源池，基于PQI的侧行链路资源池，或者，基于切片和PQI的侧行链路资源池。
基于切片的侧行链路资源池可以是以切片为粒度进行配置的侧行链路资源池，针对不同的切片，可以配置不同的侧行链路资源池。换言之，切片信息与侧行链路资源池存在对应关系，通过切片信息可以索引或查找到切片信息所标识的切片所对应的侧行链路资源池。
例如，对于V2V切片，配置V2V切片的侧行链路资源池(可以记为侧行链路资源池X)；对于U2U切片，配置U2U切片的侧行链路资源池(可以记为侧行链路资源池Y)。再例如，对于切片1，配置切片1的侧行链路资源池(可以记为侧行链路资源池m)；对于切片2，配置切片2的侧行链路资源池(可以记为侧行链路资源池n)
进一步地，假设V2V切片的侧行链路个数(即占用资源属于该V2V切片的侧行链路的个数)大于U2U切片的侧行链路个数(即占用资源属于该U2U切片的侧行链路的个数)，那么配置给V2V切片的侧行链路资源池X大于配置给U2U切片的侧行链路资源池Y，即V2V切片的侧行链路资源池中的资源数量(例如，频率范围，或者时间长度)大于U2U切片的侧行链路资源池中的资源数量。或者，假设V2V切片的侧行链路在一个频率(记为第一频率)上通信性能好，U2U切片的侧行链路在另一个频率(记为第二频率)上通信性能好，那么可以V2V切片的侧行链路资源池中包括第一频率，U2U切片的侧行链路资源池中包括第二频率。
基于QoS需求的侧行链路资源池可以指的是以QoS需求为粒度进行配置的侧行链路资源池，针对不同的QoS需求，可以配置不同的侧行链路资源池。换言之，QoS需求信息与侧行链路资源池存在对应关系，通过QoS需求信息(例如，PQI)可以索引或查找到QoS需求信息所对应的侧行链路资源池。
例如，假设QoS需求信息为PQI，那么对于PQI＝1的QoS需求，配置PQI＝1的侧行链路资源池(可以记为侧行链路资源池a)；对于PQI＝2的QoS需求，配置PQI＝2的侧行链路资源池(可以记为侧行链路资源池b)。
进一步地，假设PQI＝1的侧行链路个数大于PQI＝2的侧行链路个数，那么配置给PQI＝1的侧行链路资源池a可以大于配置给PQI＝2的侧行链路资源池b，即PQI＝1的侧行链路资源池a中的资源数量大于PQI＝2的侧行链路资源池b中的资源数量。或者，假设PQI＝1对应的优先级高于PQI＝2对应的优先级，那么配置给PQI＝1的侧行链路资源池a可以大 于配置给PQI＝2的侧行链路资源池b。
其中，侧行链路资源池的资源数量的大小可以基于侧行链路资源池的频率范围和时间范围来比较，例如，侧行链路资源池a包括频率在110-128MHz上的所有时域资源，侧行链路资源池b包括频率在128-140MHz上的所有时域资源，那么侧行链路资源池a的资源数量大于侧行链路资源池b的资源数量(可以简称为侧行链路资源池a大于侧行链路资源池b)；也可以仅基于侧行链路资源池的频率范围或时间范围来比较，例如，侧行链路资源池a包括的时域资源为8:00-12:00，侧行链路资源池b包括的时域资源为14:00-16：00，那么侧行链路资源池a的资源数量大于侧行链路资源池b的资源数量，不予限制。
需要说明的是，PQI＝1的侧行链路资源池中的资源均可以用于承载PQI＝1的D2D业务。
其中，PQI＝1的侧行链路可以指的是该用于承载PQI＝1的D2D业务的侧行链路。此外，PQI＝2，3，4，…等的侧行链路与PQI＝1的侧行链路具有相似含义，不再赘述。
其中，PQI＝1的D2D业务可以指的是QoS需求为PQI＝1所指示的QoS需求的D2D业务。此外，PQI＝2，3，4，…等的D2D业务与PQI＝1的D2D业务具有相似含义，不再赘述。
基于切片和QoS需求的侧行链路资源池可以指的是以切片和QoS需求为粒度进行配置的侧行链路资源池，在不同切片上，针对不同的QoS需求可以配置不同的侧行链路资源池。换言之，切片信息和QoS需求信息，与侧行链路资源池存在对应关系，通过切片信息(例如，切片类型)和QoS需求信息(例如，PQI)可以索引或查找到在该切片信息所标识的切片上该QoS需求信息所对应的侧行链路资源池。
例如，对于V2V切片且PQI＝1的QoS需求，配置有侧行链路资源池1；对于V2V切片且PQI＝2的QoS需求，配置有侧行链路资源池2；对于U2U切片且PQI＝2的QoS需求，配置有侧行链路资源池3，等等。可见，侧行链路资源池1，2和3均可以通过切片信息和PQI进行索引或查找。
需要说明的是，接入网设备可以在每次接收到侧行链路的上下文信息时执行步骤303，也可以在满足预设条件时执行步骤303。例如，接入网设备以预设周期执行步骤303，或者，接入网设备在接收到的侧行链路的上下文信息达到预设个数时执行步骤303，不予限制。
可见，采用上述实施例提供的方法，终端向接入网设备发送侧行链路的上下文信息，进而接入网设备根据侧行链路的上下文信息配置用于D2D通信的侧行链路资源池，使得接入网设备能够根据侧行链路的资源需求动态配置用于D2D通信的侧行链路资源池，避免侧行链路资源池的配置不合理，例如，侧行链路资源池配置过小出现拥塞，或者侧行链路资源池配置过大导致资源浪费等，进而提高资源利用率。
可选地，在上述实施例的一种实施场景下，在步骤302之前，上述方法还包括：
300a、第一终端向PCF发送第一请求消息，并接收来自PCF的第一响应消息。
在一种可选的实现方式中，第一请求消息用于请求授权第一终端进行D2D通信，第一响应消息用于指示授权所述第一终端进行D2D通信。
在另一种可选的实现方式中，第一请求消息携带有该侧行链路所承载的D2D业务的 信息。该D2D业务的信息可以为该D2D业务的业务类型，例如，V2V业务，或U2U业务。相应地，第一请求消息用于请求授权第一终端进行该侧行链路所承载的D2D业务，第一响应消息用于指示授权第一终端进行该侧行链路所承载的D2D业务。
相应地，PCF接收第一请求消息，并根据第一请求消息向第一终端发送第一响应消息。
示例性地，PCF可以在接收第一请求消息后，从UDM获取第一终端的签约信息。当该签约信息中显示第一终端已签约D2D通信，则PCF可以对第一终端的D2D通信进行授权；或者，当该签约信息中显示第一终端已签约V2V业务，则PCF授权第一终端进行V2V业务。
需要说明的是，本申请中提及的授权均可以替换成允许，不予限制。
上述实施场景下，PCF对第一终端的D2D业务或D2D通信进行授权，且第一终端在授权后将侧行链路的上下文信息上报给接入网设备，保证了接入网设备收到的侧行链路的上下文信息的有效性，避免接入网设备由于侧行链路的上下文信息无效而导致的统计不准确，进而使得接入网设备能够更加准确地配置侧行链路资源池。
可选地，在上述实施例的另一种实施场景下，在步骤302之前，上述方法还包括：
300b、第一终端向PCF发送第二请求消息，并接收来自所述PCF的第二响应消息；
其中，第二请求消息携带有该侧行链路的上下文信息，第二请求消息用于请求授权该侧行链路的上下文信息，第二响应消息用于指示授权该侧行链路的上下文信息。
其中，授权该侧行链路的上下文信息可以指的是授权第一终端使用该上下文信息对应的侧行链路资源池中的资源。例如，假设该上下文信息为切片信息，那么该上下文信息对应的侧行链路资源池中的资源指的是该切片信息所标识的切片的侧行链路资源池中的资源。再例如，假设该上下文信息为该侧行链路所承载的D2D业务的QoS需求信息，且该QoS需求信息为PQI＝1，那么该上下文信息对应的资源指的是该PQI＝1的侧行链路资源池中的资源。
相应地，PCF接收第二请求消息，并根据第二请求消息向第一终端发送第二响应消息。
在一个示例中，PCF接收到第二请求消息，该第二请求消息携带该侧行链路的切片信息，从UDM获取第一终端的签约信息，若该签约信息显示第一终端已签约该侧行链路的切片信息所标识的切片，即已签约该侧行链路的切片，则PCF向第一终端发送第二响应消息。
在另一个实例中，PCF接收到第二请求消息，该第二请求消息携带该侧行链路所承载的D2D业务的QoS需求信息，从UDM获取第一终端的签约信息，若该签约信息中QoS参数包括该侧行链路所承载的D2D业务的QoS需求信息对应的QoS需求参数，则PCF向第一终端发送第二响应消息。
上述实施场景下，PCF授权第一终端使用该上下文信息对应的侧行链路资源池中的资源，且第一终端在授权后将侧行链路的上下文信息上报给接入网设备，保证了接入网设备收到的侧行链路的上下文信息的有效性，避免接入网设备由于侧行链路的上下文信息无效而导致的统计不准确，进而使得接入网设备能够更加准确地配置侧行链路资源池。
可选地，在上述实施例的另一种实施场景下，在步骤302包括或替换为步骤302a或 302b。
302a、当该侧行链路的上下文信息对应的侧行链路资源池发生拥塞时，第一终端向接入网设备发送该侧行链路的上下文信息。
其中，侧行链路资源池发生拥塞可以指的是该侧行链路资源池中的可用侧行链路资源小于或等于第一阈值，或者该侧行链路资源池中的资源抢占严重，例如，第一终端通过载波侦听多路访问/冲突避免(Carrier Sense Multiple Access with Collision Avoidance，CSMA/CA)的检测机制检测到侧行链路资源池中的已被使用资源的占比大于预设阈值。具体地，已被使用资源可以指的是已经有数据传输的资源。
其中，该第一阈值可以为正整数，也可以为0。例如，当侧行链路资源池中的可用侧行链路资源等于0时，表明侧行链路资源池中无可用侧行链路资源，该侧行链路资源池发生拥塞。
其中，可用侧行链路资源可以指的是未被使用的侧行链路资源。
在一个示例中，当该侧行链路的上下文信息为切片信息时，该侧行链路的上下文信息对应的侧行链路资源池为切片信息所标识的切片的侧行链路资源池。具体可以参见前述基于切片的侧行链路资源池的相关描述。例如，V2V切片的侧行链路资源池。
相应地，第一终端可以通过判断该侧行链路的切片的侧行链路资源池中可用侧行链路资源是否小于或等于第一阈值，来确定该侧行链路的切片的侧行链路资源池发生拥塞；或者，第一终端可以接收来自接入网设备的拥塞指示信息，该拥塞指示信息可以用于指示该侧行链路的切片的侧行链路资源池发生拥塞，不予限制。
其中，该侧行链路资源池中可用侧行链路资源可以由接入网设备发送给第一终端，不予限制。
在另一个示例中，当该侧行链路的上下文信息为该侧行链路所承载的D2D业务的QoS需求信息时，该侧行链路的上下文信息对应的侧行链路资源池为该QoS需求信息对应的侧行链路资源池。
其中，该QoS需求信息对应的侧行链路资源池可以指的是通过该QoS需求信息索引或查找到的侧行链路资源池，可以参见前述基于QoS需求的侧行链路资源池的相关描述。例如，该QoS需求信息为PQI＝2，该QoS需求信息对应的侧行链路资源池为侧行链路资源池b。
相应地，第一终端可以接收来自接入网设备的拥塞指示信息，该拥塞指示信息用于指示该侧行链路所承载的D2D业务的QoS需求信息对应的侧行链路资源池发生拥塞；或者，第一终端也可以通过判断该QoS需求信息对应的侧行链路资源池中可用侧行链路资源是否小于或等于第一阈值来确定该QoS需求信息对应的侧行链路资源池是否发生拥塞。
其中，该侧行链路资源池中可用侧行链路资源可以由接入网设备发送给第一终端，不予限制。
在另一个示例中，当该侧行链路的上下文信息包括切片信息和该侧行链路所承载的D2D业务的QoS需求信息时，该侧行链路的上下文信息对应的侧行链路资源池为在该切片信息所标识的切片上该QoS需求信息对应的侧行链路资源池。
其中，在该切片信息所标识的切片上该QoS需求信息对应的侧行链路资源池可以指的是通过该切片信息以及该QoS需求信息索引或查找到的侧行链路资源池，具体可以参 见前述基于切片和QoS需求的侧行链路资源池的相关描述。例如，假设该切片信息为V2V切片，该QoS需求信息为PQI＝1，那么在该切片信息所标识的切片上该QoS需求信息所对应的侧行链路资源池为V2V切片上PQI＝1的侧行链路资源池，即对于V2V切片且PQI＝1，所配置的侧行链路资源池1。
302b、当该侧行链路的通信状态满足预设条件时，第一终端向接入网设备发送该侧行链路的上下文信息。
其中，该侧行链路的通信状态可以用于表征该侧行链路的通信质量。具体地，该通信状态可以包括用于表征通信质量的参数，例如，该侧行链路的信号干扰，该侧行链路的信号强度或质量，以及该侧行链路的QoS实现情况(QoS achievement)。
其中，该侧行链路的QoS实现情况可以包括：该侧行链路的数据包时延，该侧行链路的误包率(packet error rate)等QoS实现情况。
相应地，该侧行链路的通信状态满足预设条件可以用于表征该侧行链路的通信质量差，或者该侧行链路的通信质量不满足正常通信(或者D2D通信，或者业务等)的需求，不予限制。
示例性地，该侧行链路的通信状态满足预设条件可以根据通信状态的不同，分为如下几种情况：
情况1，当通信状态为侧行链路的QoS实现情况时，该侧行链路的通信状态满足预设条件为该侧行链路的QoS实现情况不满足该侧行链路所承载的D2D业务的QoS需求。
其中，该QoS实现情况可以是由应用服务器发送给第一终端的，不予限制。
需要说明的是，当侧行链路的QoS参数包括多个参数时，该侧行链路的QoS实现情况不满足该侧行链路所承载的D2D业务的QoS需求可以指的是该侧行链路的QoS实现情况中任一参数不满足该QoS需求。
情况2，当通信状态为该侧行链路的信号强度时，该侧行链路的通信状态满足预设条件为该侧行链路的信号强度小于预设强度门限。
情况3，当通信状态为该侧行链路的信号质量时，该侧行链路的通信状态满足预设条件为该侧行链路的信号质量小于预设质量门限。
情况4，当通信状态为该侧行链路的信号干扰时，该侧行链路的通信状态满足预设条件为该侧行链路的信号干扰大于预设干扰门限。
需要指出的是，本申请不限于上述列举出的几种情况，还可以包括上述情况之间各种组合，例如，情况2和3的组合，即通信状态包括该侧行链路的信号强度和信号质量，该侧行链路的通信状态满足预设条件包括：该侧行链路的信号强度小于预设强度门限；和/或该侧行链路的信号质量小于预设质量门限。
可选地，在上述实施例的另一种实施场景下，上述方法还包括：
当该侧行链路发生中断或去激活该侧行链路时，第一终端向接入网设备或PCF发送第一指示信息。
其中，该第一指示信息可以用于指示该侧行链路的通信结束，或该侧行链路所承载的D2D业务结束，或在该侧行链路上停止数据传输，不予限制。
具体地，该侧行链路发生中断可以指的是第一终端在预设时间长度内未通过该侧行链 路接收到或发送数据或信令。例如，第一终端在1秒内未通过该侧行链路接收到PC5信令(PC5-Signalling)消息。
需要说明的是，在D2D通信过程中，可以利用keep-alive functionality来保持侧行链路，具体可以通过周期性发送PC5-S消息来实现。
具体地，去激活该侧行链路可以指的是释放该侧行链路，具体可以理解为释放侧行链路的上下文信息。例如，第一终端向二终端发送去激活命令，且该去激活命令用于去激活该侧行链路。再例如，第一终端接收来自第二终端的去激活命令，且该去激活命令用于去激活该侧行链路。
进一步地，上述方法还可以包括：接入网设备接收该第一指示信息，并根据该第一指示信息重新配置用于D2D通信的侧行链路资源池。
其中，重新配置也可以称为更新，不予限制。
在一个示例中，假设该侧行链路的上下文信息为切片信息，且该切片信息为V2V切片的标识，那么接入网设备在接收到该第一指示信息后，更新该V2V切片上侧行链路的统计信息。例如，在收到该第一指示信息之前，该V2V切片上侧行链路的个数为10；在收到该第一指示信息之后，更新该V2V切片上侧行链路的个数，更新后的个数为9。进一步地，接入网设备根据更新后的侧行链路的个数，重新配置用于D2D通信的侧行链路资源池。例如，接入网设备结合U2U切片上侧行链路的个数，以及更新后的V2V切片上侧行链路的个数，调整各个切片的侧行链路资源池，具体可以参见后续步骤303的实现方式，此处不再赘述。
可选地，在上述实施例的另一种实施场景下，上述方法还包括：
当第一终端发生跨接入网设备的切换时，第一终端向接入网设备或PCF发送第二指示信息。
其中，该第二指示信息可以用于指示第一终端发生跨接入网设备的切换，或者第一终端切换到另一个接入网设备，不予限制。
具体地，当第一终端发生跨接入网设备的切换时，第一终端可以向第一终端在发生该跨接入网设备的切换之前的接入网设备发送第二指示信息。例如，第一终端接收到切换命令，且该切换命令用于指示第一终端切换到目标接入网设备，此时，第一终端向该第一终端的源接入网设备或PCF发送第二指示信息。换言之，第一终端在接收到用于指示切换到目标接入网设备的切换命令时，则表明第一终端发生跨接入网设备的切换。
进一步地，上述方法还可以包括：接入网设备接收该第二指示信息，并根据该第二指示信息重新配置用于D2D通信的侧行链路资源池。
其中，重新配置也可以称为更新，不予限制。
在一个示例中，假设该侧行链路的上下文信息为切片信息，且该切片信息为V2V切片的标识，那么接入网设备在接收到该第二指示信息后，更新该V2V切片上侧行链路的统计信息，接入网设备根据更新后的侧行链路的统计信息重新配置用于D2D通信的侧行链路池。具体可以参见上述第一指示信息的相关示例，此处不再赘述。
可选地，在上述实施例的另一种实施场景下，上述方法还包括：
接入网设备发送该侧行链路资源池的信息。
相应地，终端在接收到该侧行链路资源池的信息之后，可以该侧行链路资源池中的资源，建立与其他终端之间的侧行链路，以实现两个终端之间的D2D通信。
具体地，接入网设备可以采用广播的方式，发送该侧行链路资源池的信息，或通过单播的方式发送该侧行链路资源池的信息。例如，接入网设备通过系统消息块(system information block，SIB)携带该侧行链路资源池的信息，并广播该SIB。
其中，该侧行链路资源池的信息可以是频域资源的信息，例如，用于指示100-120MHz的信息；也可以是时域资源的信息，例如，用于指示时间为08:00-12:00(即8点至12点)的信息；还可以是频域资源的信息和时域资源的信息，不予限制。
此外，该侧行链路资源池的信息可以用于Uu口处于空闲态或连接态的终端利用该侧行链路资源池中的资源，建立与其他终端之间的侧行链路，以实现两个终端之间的直接通信。
可选地，在上述实施例的另一种实施场景下，步骤303包括303a和303b。
303a、接入网设备根据侧行链路的上下文信息，确定用于D2D通信的侧行链路的分布情况。
例如，确定用于D2D通信的侧行链路在不同切片上的分布情况和/或在不同QoS需求上的分布情况。
303b、接入网设备根据该分布情况，配置用于D2D通信的侧行链路资源池。
在一个示例中，以基于切片的侧行链路资源池为例，且该侧行链路的上下文信息为V2V切片为例，假设接入网设备在接收到该侧行链路的上下文信息之前，V2V切片上侧行链路的个数为9，U2U切片上侧行链路的个数为3，V2V切片的侧行链路资源池为频率在100-120MHz上的所有时域资源，U2U切片的侧行链路资源池为频率在120-130MHz上的所有时域资源；接入网设备在接收到该侧行链路的上下文信息之后，确定V2V切片上侧行链路的个数为10，U2U切片上侧行链路的个数为3，那么接入网设备配置V2V切片的侧行链路资源池为频率在100-122MHz上的所有时域资源，U2U切片的侧行链路资源池为频率在122-130MHz上的所有时域资源。
在另一个示例中，以基于PQI的侧行链路资源池为例，假设侧行链路资源池包括PQI＝1的侧行链路资源池，PQI＝2的侧行链路资源池，以及PQI＝3的侧行链路资源池，且该侧行链路的上下文信息为PQI＝2，接入网设备在接收到该侧行链路的上下文信息之前，PQI＝1的侧行链路的个数为2，PQI＝2的侧行链路的个数为3，PQI＝3的侧行链路的个数为3，PQI＝1的侧行链路资源池为频率在110-120MHz上的所有时域资源，PQI＝2的侧行链路资源池为频率在120-130MHz上的所有时域资源，PQI＝3的侧行链路资源池为频率在130-140MHz上的所有时域资源；接入网设备在接收到该侧行链路的上下文信息之后，PQI＝1侧行链路的个数为2，PQI＝2的侧行链路的个数为4，PQI＝3的侧行链路的个数为3，那么接入网设备配置PQI＝1的侧行链路资源池为频率在110-118MHz上的所有时域资源，PQI＝2的侧行链路资源池为频率在118-130MHz上的所有时域资源，PQI＝3的侧行链路资源池为频率在130-140MHz上的所有时域资源。
图4示出了本申请实施例的另一种通信方法的示意性流程图，如下所述。
401、第一终端获取侧行链路的上下文信息。
其中，该侧行链路可以用于第一终端与第二终端之间的D2D通信。
402、第一终端向PCF发送第二请求消息。
其中，第二请求消息携带有侧行链路的上下文信息，该第二请求消息可以用于请求授权第一终端使用该上下文信息对应的资源。
403、PCF根据第二请求消息，向第一终端发送第二响应消息。
其中，第二响应消息用于指示授权第一终端使用该上下文信息对应的资源。
需要指出的是，在步骤403之后，上述方法还包括404a或404b。
404a、PCF向第一终端的接入网设备发送该侧行链路的上下文信息。
404b、第一终端在接收到第二响应消息后，向接入网设备发送该侧行链路的上下文信息。
405、接入网设备根据该侧行链路的上下文信息，配置用于D2D通信的侧行链路资源池。
具体地，步骤405可以参见步骤303的相关描述，不再赘述。
其中，侧行链路，上下文信息，D2D通信，上下文信息对应的资源，第二请求消息等均可以参见图3所示实施例中的相关描述，不再赘述。
采用上述实施例提供的方法，在第一终端得到PCF的授权后，第一终端再向接入网设备发送侧行链路的上下文信息，保证了侧行链路的上下文信息的有效性，从而进一步提高基于侧行链路的上下文信息配置侧行链路资源池的准确性；接入网设备根据侧行链路的上下文信息配置用于D2D通信的侧行链路资源池，使得接入网设备能够根据侧行链路的资源需求动态配置用于D2D通信的侧行链路资源池，避免侧行链路资源池的配置不合理，例如，侧行链路资源池配置过小出现拥塞，或者侧行链路资源池配置过大导致资源浪费等。
可选地，在上述实施例的一种实施场景下，上述方法还包括：
PCF接收第一指示信息，其中，该第一指示信息用于指示上述侧行链路的通信结束；
PCF根据第一指示信息对第一终端进行计费统计；和/或，
PCF向第一终端的接入网设备发送第一指示信息。
相应地，接入网设备可以根据该第一指示信息重新配置用于D2D通信的侧行链路资源池，具体可以参见图3所示实施例中的相关描述，不再赘述。
具体地，上述PCF根据第一指示信息对第一终端进行计费统计，可以包括：PCF结合402中第二请求消息及第一指示信息确定第一终端的D2D通信时间长度，基于该时间长度对第一终端的D2D通信进行计费。进一步地，PCF还可以结合QoS需求信息或切片信息进行计费。需要说明的是，不同的QoS需求，不同的切片，计费可以不同。
可选地，在上述实施例的另一种实施场景下，上述方法还包括：
PCF接收第二指示信息，其中，第二指示信息用于指示第一终端发生跨接入网设备的切换；
PCF向第一终端在发生该跨接入网设备的切换之前的接入网设备发送第二指示信息。
相应地，接入网设备可以根据该第二指示信息重新配置用于D2D通信的侧行链路资 源池。具体可以参见图3所示实施例中的相关描述，不再赘述。
可以理解的是，以上各个实施例中，由终端设备或网络设备实现的方法和/或步骤，也可以由可用于终端设备或网络设备的部件(例如芯片或者电路)实现。
上述主要从各个网元之间交互的角度对本申请实施例提供的方案进行了介绍。相应的，本申请实施例还提供了通信装置，该通信装置用于实现上述各种方法。该通信装置可以为上述方法实施例中的终端设备，例如发送端终端设备或者接收端终端设备，或者包含上述终端设备的装置，比如各种类型的车辆，或者上述终端设备中包含的装置，比如系统芯片；或者，该通信装置可以为上述方法实施例中网络设备，或者上述网络设备中包含的装置，比如系统芯片。可以理解的是，该通信装置为了实现上述功能，其包含了实现上述方法相应的模块、单元、或手段(means)，该模块、单元、或means可以通过硬件实现，软件实现，或者通过硬件执行相应的软件实现。该硬件或软件包括一个或多个与上述功能相对应的模块或单元。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。
本申请实施例可以根据上述方法实施例中对通信装置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。
图5为本申请实施例的一种通信装置的示意性结构图。图5所示的通信设备50包括一个或多个处理器501，通信总线502，以及至少一个通信接口(图5中仅是示例性的以包括通信接口504，以及一个处理器501为例进行说明)。可选的，通信设备50还包括存储器503。
处理器501可以是一个通用中央处理器(central processing unit，CPU)，微处理器，特定应用集成电路(application-specific integrated circuit，用于实现)，或一个或多个用于控制本申请方案程序执行的集成电路。
通信总线502可以是外设部件互连标准(peripheral component interconnect，PCI)总线或扩展工业标准结构(extended industry standard architecture，EISA)总线等。该总线可以分为地址总线、数据总线、控制总线等。为便于表示，图5中仅用一条粗线表示，但并不表示仅有一根总线或一种类型的总线。该通信总线502用于连接通信设备50中的不同组件，使得不同组件可以通信。
通信接口504，可以是收发模块用于与其他设备或通信网络通信，如以太网，无线接入网(radio access network，RAN)，无线局域网(wireless local area networks，WLAN)等。例如，所述收发模块可以是收发器、收发机一类的装置。可选的，所述通信接口504也可以是位于处理器501内的收发电路，用以实现处理器的信号输入和信号输出。
存储器503可以是具有存储功能的装置。例如可以是只读存储器(read-only memory，ROM)或可存储静态信息和指令的其他类型的静态存储设备，随机存取存储器(random access memory，RAM)或者可存储信息和指令的其他类型的动态存储设备，也可以是电 可擦可编程只读存储器(electrically erasable programmable read-only memory，EEPROM)、只读光盘(compact disc read-only memory，CD-ROM)或其他光盘存储、光碟存储(包括压缩光碟、激光碟、光碟、数字通用光碟、蓝光光碟等)、磁盘存储介质或者其他磁存储设备、或者能够用于携带或存储具有指令或数据结构形式的期望的程序代码并能够由计算机存取的任何其他介质，但不限于此。存储器可以是独立存在，通过通信线路502与处理器相连接。存储器也可以和处理器集成在一起。
其中，存储器503用于存储执行本申请方案的计算机指令，并由处理器501来控制执行。处理器501用于执行存储器503中存储的计算机指令，从而实现本申请实施例中提供的资源配置方法。
或者，可选的，本申请实施例中，也可以是处理器501执行本申请下述实施例提供的资源配置方法中的处理相关的功能，通信接口504负责与其他设备或通信网络通信，本申请实施例对此不作具体限定。
可选的，本申请实施例中的计算机指令也可以称之为应用程序代码或指令，本申请实施例对此不作具体限定。
在具体实现中，作为一种实施例，处理器501可以包括一个或多个CPU，例如图5中的CPU0和CPU1。
在具体实现中，作为一种实施例，通信设备50可以包括多个处理器，例如图5中的处理器501和处理器508。这些处理器中的每一个可以是一个单核(single-CPU)处理器，也可以是一个多核(multi-CPU)处理器。这里的处理器可以指一个或多个设备、电路、和/或用于处理数据(例如计算机指令)的处理核。
在具体实现中，作为一种实施例，通信设备50还可以包括输出设备505和输入设备506。输出设备505和处理器501通信，可以以多种方式来显示信息。例如，输出设备505可以是液晶显示器(liquid crystal display，LCD)，发光二级管(light emitting diode，LED)显示设备，阴极射线管(cathode ray tube，CRT)显示设备，或投影仪(projector)等。输入设备506和处理器501通信，可以以多种方式接收用户的输入。例如，输入设备506可以是鼠标、键盘、触摸屏设备或传感设备等。
在一种可能的实现方式中，处理器501可以通过调用存储器503中存储的计算机指令，使得通信装置50执行上述方法实施例中的第一终端执行的方法。因此其所能获得的技术效果可参考上述方法实施例，在此不再赘述。
在另一种可能的实现方式中，处理器501可以通过调用存储器503中存储的计算机指令，使得通信装置50执行上述方法实施例中的接入网设备执行的方法。因此其所能获得的技术效果可参考上述方法实施例，在此不再赘述。
在另一种可能的实现方式中，处理器501可以通过调用存储器503中存储的计算机指令，使得通信装置50执行上述方法实施例中的PCF执行的方法。因此其所能获得的技术效果可参考上述方法实施例，在此不再赘述。
图6是本申请实施例的另一种通信装置的示意性结构图。图6所示的通信装置60包括处理单元601和收发单元602。
其中，收发单元602，也可以称为收发模块用以实现发送和/或接收功能，例如可以是 收发电路，收发机，收发器或者通信接口。处理单元601也可以称为处理模块，例如，可以是至少一个处理器，不预限制。
在一种可能的设计中，通信装置60可以用于实现图3或4所示方法实施例中第一终端的功能。
处理单元601，用于获取侧行链路的上下文信息，所述侧行链路用于第一终端与第二终端之间的D2D通信。收发单元602，用于向接入网设备发送所述侧行链路的上下文信息，所述侧行链路的上下文信息用于所述接入网设备配置用于D2D通信的侧行链路资源池。
其中，所述侧行链路的上下文信息可以包括以下一种或多种：所述侧行链路的切片信息，所述侧行链路所承载的D2D业务的QoS需求信息。
其中，所述切片信息可以包括以下一种或多种：所述侧行链路的切片服务类型，和所述侧行链路的切片标识。
可选地，收发单元602还用于：向策略控制功能PCF发送第一请求消息，并接收来自所述PCF的第一响应消息。
其中，所述第一请求消息用于请求授权所述第一终端进行D2D通信，所述第一响应消息用于指示授权所述第一终端进行D2D通信；或者，所述第一请求消息携带有所述侧行链路所承载的D2D业务的信息，所述第一请求消息用于请求授权所述第一终端进行所述侧行链路所承载的D2D业务，所述第一响应消息用于指示授权所述第一终端进行所述侧行链路所承载的D2D业务。
可选地，收发单元602还用于：向PCF发送第二请求消息，并接收来自所述PCF的第二响应消息。
其中，所述第二请求消息携带有所述侧行链路的上下文信息，所述第二请求消息用于请求授权所述第一终端使用所述上下文信息对应的资源，所述第二响应消息用于指示授权所述第一终端使用所述上下文信息对应的资源。
可选地，收发单元602具体用于：当所述侧行链路的上下文信息对应的侧行链路资源池发生拥塞时，向所述接入网设备发送所述侧行链路的上下文信息；或者，当所述侧行链路的通信状态满足预设条件时，向所述接入网设备发送所述侧行链路的上下文信息。
可选地，收发单元602还用于：当所述侧行链路发生中断，或去激活所述侧行链路时，向所述接入网设备或PCF发送第一指示信息，所述第一指示信息用于指示所述侧行链路的通信结束；或者，当所述第一终端发生跨接入网设备的切换时，向所述接入网设备或PCF发送第二指示信息，所述第二指示信息用于指示所述第一终端发生跨接入网设备的切换。
在另一种可能的设计中，通信装置60可以用于实现图3或4所示方法实施例中接入网设备的功能。
收发单元602，用于接收侧行链路的上下文信息，所述侧行链路用于第一终端与第二终端之间的D2D通信。
处理单元601，用于根据所述侧行链路的上下文信息，配置用于D2D通信的侧行链路资源池。
其中，所述侧行链路的上下文信息可以包括以下一种或多种：所述侧行链路的切片信息，所述侧行链路所承载的D2D业务的QoS需求信息。
其中，所述侧行链路资源池可以包括：基于切片的侧行链路资源池，基于PQI的侧行链路资源池，或者，基于切片和PQI的侧行链路资源池。
可选地，收发单元602，还用于接收来自所述第一终端的指示信息，所述指示信息用于指示所述侧行链路的通信结束，或者所述指示信息用于指示所述第一终端发生跨接入网设备的切换；处理单元601，还用于根据所述指示信息，重新配置用于D2D通信的侧行链路资源池。
可选地，收发单元602具体用于：接收来自所述第一终端的所述侧行链路的上下文信息；或者，接收来自PCF的所述侧行链路的上下文信息。
在另一种可能的设计中，通信装置60可以用于实现图3或4所示方法实施例中PCF的功能。
收发单元602，用于接收来自第一终端的第一请求消息；
处理单元601，用于根据所述第一请求消息，向所述第一终端发送第一响应消息。
其中，所述第一请求消息用于请求授权所述第一终端进行D2D通信，所述第一响应消息用于指示授权所述第一终端进行D2D通信；或者，
所述第一请求消息携带有D2D业务的信息，所述第一请求消息用于请求授权所述第一终端进行所述D2D业务，所述第一响应消息用于指示授权所述第一终端进行所述D2D业务。
在又一种可能的设计中，通信装置60可以用于实现图3或4所示方法实施例中PCF的功能。
收发单元602，用于接收来自第一终端的第二请求消息，所述第二请求消息携带有侧行链路的上下文信息，所述侧行链路用于所述第一终端与第二终端之间的D2D通信，所述第二请求消息用于请求授权所述第一终端使用所述上下文信息对应的资源。
处理单元601，用于根据所述第二请求消息，向所述第一终端发送第二响应消息，所述第二响应消息用于指示授权所述第一终端使用所述上下文信息对应的资源。
其中，所述侧行链路的上下文信息可以包括以下一种或多种：所述侧行链路的切片信息，所述侧行链路所承载的D2D业务的QoS需求信息。
可选地，收发单元602还用于：向所述第一终端的接入网设备发送所述侧行链路的上下文信息。
可选地，收发单元602，还用于接收第一指示信息，所述第一指示信息用于指示所述侧行链路的通信结束；处理单元601，还用于根据所述第一指示信息对所述第一终端进行计费统计，和/或，通过收发单元602向所述第一终端的接入网设备发送所述第一指示信息。
可选地，收发单元602还用于：接收第二指示信息，所述第二指示信息用于指示所述第一终端发生跨接入网设备的切换；向所述第一终端在发生所述跨接入网设备的切换之前的接入网设备发送所述第二指示信息。
本申请各实施例中，处理模块601用于通过收发模块602接收或发送上述信息或消息可以理解为，收发模块602接收外界发送的携带上述信息或消息的信号之后，经过或者不经过信号处理发送给处理模块601处理。或者，本申请实施例中，处理模块601用于通过收发模块602接收上述信息或消息可以理解为，收发模块602接收外界发送的携带上述信 息或消息的信号之后，经过或者不经过信号处理发送给处理模块601处理。在此统一说明，以下不再赘述。
其中，上述方法实施例涉及的各步骤的所有相关内容均可以援引到对应功能模块的功能描述，在此不再赘述。
在本实施例中，通信装置60以采用集成的方式划分各个功能模块的形式来呈现。这里的“单元”或“模块”可以指特定ASIC，电路，执行一个或多个软件或固件程序的处理器和存储器，集成逻辑电路，和/或其他可以提供上述功能的器件。在一个简单的实施例中，本领域的技术人员可以想到该通信装置60可以采用图4所示的通信装置50的形式。
示例性的，图6中的处理单元601和收发单元602的功能/实现过程可以通过图5所示的通信装置50中的处理器501调用存储器503中存储的计算机指令来实现。或者，图6中的处理单元601的功能/实现过程可以通过图5所示的通信装置50中的处理器501调用存储器503中存储的计算机指令来实现，图6中的收发单元602的功能/实现过程可以通过图5所示的通信装置50中的通信接口504来实现。
本申请实施例提供提供一种计算机可读存储介质，其上存储有计算机指令，该计算机指令被执行时，执行上述图3或4所示方法实施例中第一终端，接入网设备或PCF的动作。
本申请实施例提供提供一种包含计算机指令的计算机程序产品，该计算机指令被执行时执行上述图3或4所示方法实施例中第一终端，接入网设备或PCF的动作。
本申请实施例提供一种通信系统，该通信系统包括接入网设备，还可以包括PCF。进一步地，还可以包括第一终端。
其中，接入网设备可以用于执行图3或4所示实施例中接入网设备的方法，PCF可以用于执行图3或4所示实施例中PCF的方法。
上述实施例，可以全部或部分地通过软件、硬件(如电路)、固件或其他任意组合来实现。当使用软件实现时，上述实施例可以全部或部分地以计算机程序产品的形式实现。所述计算机程序产品包括一个或多个计算机指令或计算机程序。在计算机上加载或执行所述计算机指令或计算机程序时，全部或部分地产生按照本申请实施例所述的流程或功能。所述计算机可以为通用计算机、专用计算机、计算机网络、或者其他可编程装置。所述计算机指令可以存储在计算机可读存储介质中，或者从一个计算机可读存储介质向另一个计算机可读存储介质传输，例如，所述计算机指令可以从一个网站站点、计算机、服务器或数据中心通过有线(例如红外、无线、微波等)方式向另一个网站站点、计算机、服务器或数据中心进行传输。所述计算机可读存储介质可以是计算机能够存取的任何可用介质或者是包含一个或多个可用介质集合的服务器、数据中心等数据存储设备。所述可用介质可以是磁性介质(例如，软盘、硬盘、磁带)、光介质(例如，DVD)、或者半导体介质。半导体介质可以是固态硬盘。
应理解，本文中术语“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，其中A，B可以是单数或者复数。另外，本文中字符“/”，一般表示前后关联对象是一种“或”的关系，但也可能表示的是一种“和/或”的关系，具体可参考前后文进行理解。
本申请中，“至少一个”是指一个或者多个，“多个”是指两个或两个以上。“以下至少一项(个)”或其类似表达，是指的这些项中的任意组合，包括单项(个)或复数项(个)的任意组合。例如，a，b，或c中的至少一项(个)，可以表示：a，b，c，a-b，a-c，b-c,或a-b-c，其中a，b，c可以是单个，也可以是多个。
应理解，在本申请的各种实施例中，上述各过程的序号的大小并不意味着执行顺序的先后，各过程的执行顺序应以其功能和内在逻辑确定，而不应对本申请实施例的实施过程构成任何限定。
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。可以根据实际的需要选择其中的部分或者全部单元来实现本实施例方案的目的。
另外，在本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。
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 (39)

  1. 一种通信方法，其特征在于，包括：
    第一终端获取侧行链路的上下文信息，所述侧行链路用于所述第一终端与第二终端之间的设备到设备D2D通信；
    所述第一终端向接入网设备发送所述侧行链路的上下文信息，所述侧行链路的上下文信息用于所述接入网设备配置用于D2D通信的侧行链路资源池。
  2. 根据权利要求1所述的方法，所述侧行链路的上下文信息包括以下一种或多种：所述侧行链路的切片信息，所述侧行链路所承载的D2D业务的服务质量QoS需求信息。
  3. 根据权利要求2所述的方法，所述切片信息包括以下一种或多种：所述侧行链路的切片服务类型，和所述侧行链路的切片标识。
  4. 根据权利要求1-3中任一项所述的方法，在所述第一终端向接入网设备发送所述侧行链路的上下文信息之前，所述方法还包括：
    所述第一终端向策略控制功能PCF发送第一请求消息，并接收来自所述PCF的第一响应消息；
    其中，所述第一请求消息用于请求授权所述第一终端进行D2D通信，所述第一响应消息用于指示授权所述第一终端进行D2D通信；或者，
    所述第一请求消息携带有所述侧行链路所承载的D2D业务的信息，所述第一请求消息用于请求授权所述第一终端进行所述侧行链路所承载的D2D业务，所述第一响应消息用于指示授权所述第一终端进行所述侧行链路所承载的D2D业务。
  5. 根据权利要求1-3中任一项所述的方法，在所述第一终端向接入网设备发送所述侧行链路的上下文信息之前，所述方法还包括：
    所述第一终端向PCF发送第二请求消息，并接收来自所述PCF的第二响应消息；
    其中，所述第二请求消息携带有所述侧行链路的上下文信息，所述第二请求消息用于请求授权所述第一终端使用所述上下文信息对应的资源，所述第二响应消息用于指示授权所述第一终端使用所述上下文信息对应的资源。
  6. 根据权利要求1-5中任一项所述的方法，所述第一终端向接入网设备发送所述侧行链路的上下文信息，包括：
    当所述侧行链路的上下文信息对应的侧行链路资源池发生拥塞时，所述第一终端向所述接入网设备发送所述侧行链路的上下文信息；或者，
    当所述侧行链路的通信状态满足预设条件时，所述第一终端向所述接入网设备发送所述侧行链路的上下文信息。
  7. 根据权利要求1-6中任一项所述的方法，所述方法还包括：
    当所述侧行链路发生中断，或去激活所述侧行链路时，所述第一终端向所述接入网设备或PCF发送第一指示信息，所述第一指示信息用于指示所述侧行链路的通信结束；或者，
    当所述第一终端发生跨接入网设备的切换时，所述第一终端向所述接入网设备或PCF发送第二指示信息，所述第二指示信息用于指示所述第一终端发生跨接入网设备的切换。
  8. 一种通信方法，其特征在于，包括：
    接入网设备接收侧行链路的上下文信息，所述侧行链路用于第一终端与第二终端之间的设备到设备D2D通信；
    所述接入网设备根据所述侧行链路的上下文信息，配置用于D2D通信的侧行链路资源池。
  9. 根据权利要求8所述的方法，所述侧行链路的上下文信息包括以下一种或多种：所述侧行链路的切片信息，所述侧行链路所承载的D2D业务的服务质量QoS需求信息。
  10. 根据权利要求8或9所述的方法，所述侧行链路资源池包括：基于切片的侧行链路资源池，基于PC5 5G服务质量标识PQI的侧行链路资源池，或者，基于切片和PQI的侧行链路资源池。
  11. 根据权利要求8-10中任一项所述的方法，所述方法还包括：
    所述接入网设备接收来自所述第一终端的指示信息，所述指示信息用于指示所述侧行链路的通信结束，或者所述指示信息用于指示所述第一终端发生跨接入网设备的切换；
    所述接入网设备根据所述指示信息，重新配置用于D2D通信的侧行链路资源池。
  12. 根据权利要求8-11中任一项所述的方法，所述接入网设备接收侧行链路的上下文信息，包括：
    所述接入网设备接收来自所述第一终端的所述侧行链路的上下文信息；或者，
    所述接入网设备接收来自PCF的所述侧行链路的上下文信息。
  13. 一种通信方法，其特征在于，包括：
    策略控制功能PCF接收来自第一终端的第一请求消息；
    所述PCF根据所述第一请求消息，向所述第一终端发送第一响应消息；
    其中，所述第一请求消息用于请求授权所述第一终端进行设备到设备D2D通信，所述第一响应消息用于指示授权所述第一终端进行D2D通信；或者，
    所述第一请求消息携带有D2D业务的信息，所述第一请求消息用于请求授权所述第一终端进行所述D2D业务，所述第一响应消息用于指示授权所述第一终端进行所述D2D业务。
  14. 一种通信方法，其特征在于，包括：
    策略控制功能PCF接收来自第一终端的第二请求消息，所述第二请求消息携带有侧行链路的上下文信息，所述侧行链路用于所述第一终端与第二终端之间的D2D通信，所述第二请求消息用于请求授权所述第一终端使用所述上下文信息对应的资源；
    所述PCF根据所述第二请求消息，向所述第一终端发送第二响应消息，所述第二响应消息用于指示授权所述第一终端使用所述上下文信息对应的资源。
  15. 根据权利要求14所述的方法，所述侧行链路的上下文信息包括以下一种或多种：所述侧行链路的切片信息，所述侧行链路所承载的D2D业务的服务质量QoS需求信息。
  16. 根据权利要求14或15所述的方法，所述方法还包括：
    所述PCF向所述第一终端的接入网设备发送所述侧行链路的上下文信息。
  17. 根据权利要求14-16中任一项所述的方法，所述方法还包括：
    所述PCF接收第一指示信息，所述第一指示信息用于指示所述侧行链路的通信结束；
    所述PCF根据所述第一指示信息对所述第一终端进行计费统计，和/或，所述PCF向所述第一终端的接入网设备发送所述第一指示信息。
  18. 根据权利要求14-17中任一项所述的方法，所述方法还包括：
    所述PCF接收第二指示信息，所述第二指示信息用于指示所述第一终端发生跨接入网设备的切换；
    所述PCF向所述第一终端在发生所述跨接入网设备的切换之前的接入网设备发送所述第二指示信息。
  19. 一种通信装置，其特征在于，包括：
    处理单元，用于获取侧行链路的上下文信息，所述侧行链路用于第一终端与第二终端之间的设备到设备D2D通信；
    收发单元，用于向接入网设备发送所述侧行链路的上下文信息，所述侧行链路的上下文信息用于所述接入网设备配置用于D2D通信的侧行链路资源池。
  20. 根据权利要求19所述的通信装置，所述侧行链路的上下文信息包括以下一种或多种：所述侧行链路的切片信息，所述侧行链路所承载的D2D业务的服务质量QoS需求信息。
  21. 根据权利要求20所述的通信装置，所述切片信息包括以下一种或多种：所述侧行链路的切片服务类型，和所述侧行链路的切片标识。
  22. 根据权利要求19-21中任一项所述的通信装置，所述收发单元还用于：
    向策略控制功能PCF发送第一请求消息，并接收来自所述PCF的第一响应消息；
    其中，所述第一请求消息用于请求授权所述第一终端进行D2D通信，所述第一响应消息用于指示授权所述第一终端进行D2D通信；或者，
    所述第一请求消息携带有所述侧行链路所承载的D2D业务的信息，所述第一请求消息用于请求授权所述第一终端进行所述侧行链路所承载的D2D业务，所述第一响应消息用于指示授权所述第一终端进行所述侧行链路所承载的D2D业务。
  23. 根据权利要求19-21中任一项所述的通信装置，所述收发单元还用于：
    向PCF发送第二请求消息，并接收来自所述PCF的第二响应消息；
    其中，所述第二请求消息携带有所述侧行链路的上下文信息，所述第二请求消息用于请求授权所述第一终端使用所述上下文信息对应的资源，所述第二响应消息用于指示授权所述第一终端使用所述上下文信息对应的资源。
  24. 根据权利要求19-23中任一项所述的通信装置，所述收发单元具体用于：
    当所述侧行链路的上下文信息对应的侧行链路资源池发生拥塞时，向所述接入网设备发送所述侧行链路的上下文信息；或者，
    当所述侧行链路的通信状态满足预设条件时，向所述接入网设备发送所述侧行链路的上下文信息。
  25. 根据权利要求19-24中任一项所述的通信装置，所述收发单元还用于：
    当所述侧行链路发生中断，或去激活所述侧行链路时，向所述接入网设备或PCF发送第一指示信息，所述第一指示信息用于指示所述侧行链路的通信结束；或者，
    当所述第一终端发生跨接入网设备的切换时，向所述接入网设备或PCF发送第二指示信息，所述第二指示信息用于指示所述第一终端发生跨接入网设备的切换。
  26. 一种通信装置，其特征在于，包括：
    收发单元，用于接收侧行链路的上下文信息，所述侧行链路用于第一终端与第二终端 之间的设备到设备D2D通信；
    处理单元，用于根据所述侧行链路的上下文信息，配置用于D2D通信的侧行链路资源池。
  27. 根据权利要求26所述的通信装置，所述侧行链路的上下文信息包括以下一种或多种：所述侧行链路的切片信息，所述侧行链路所承载的D2D业务的服务质量QoS需求信息。
  28. 根据权利要求26或27所述的通信装置，所述侧行链路资源池包括：基于切片的侧行链路资源池，基于PC5 5G服务质量标识PQI的侧行链路资源池，或者，基于切片和PQI的侧行链路资源池。
  29. 根据权利要求26-28中任一项所述的通信装置，所述收发单元，还用于接收来自所述第一终端的指示信息，所述指示信息用于指示所述侧行链路的通信结束，或者所述指示信息用于指示所述第一终端发生跨接入网设备的切换；
    所述处理单元，还用于根据所述指示信息，重新配置用于D2D通信的侧行链路资源池。
  30. 根据权利要求26-29中任一项所述的通信装置，所述收发单元具体用于：
    接收来自所述第一终端的所述侧行链路的上下文信息；或者，
    接收来自PCF的所述侧行链路的上下文信息。
  31. 一种通信装置，其特征在于，包括：
    收发单元，用于接收来自第一终端的第一请求消息；
    处理单元，用于根据所述第一请求消息，向所述第一终端发送第一响应消息；
    其中，所述第一请求消息用于请求授权所述第一终端进行设备到设备D2D通信，所述第一响应消息用于指示授权所述第一终端进行D2D通信；或者，
    所述第一请求消息携带有D2D业务的信息，所述第一请求消息用于请求授权所述第一终端进行所述D2D业务，所述第一响应消息用于指示授权所述第一终端进行所述D2D业务。
  32. 一种通信装置，其特征在于，包括：
    收发单元，用于接收来自第一终端的第二请求消息，所述第二请求消息携带有侧行链路的上下文信息，所述侧行链路用于所述第一终端与第二终端之间的设备到设备D2D通信，所述第二请求消息用于请求授权所述第一终端使用所述上下文信息对应的资源；
    处理单元，用于根据所述第二请求消息，向所述第一终端发送第二响应消息，所述第二响应消息用于指示授权所述第一终端使用所述上下文信息对应的资源。
  33. 根据权利要求32所述的通信装置，所述侧行链路的上下文信息包括以下一种或多种：所述侧行链路的切片信息，所述侧行链路所承载的D2D业务的服务质量QoS需求信息。
  34. 根据权利要求32或33所述的通信装置，所述收发单元还用于：
    向所述第一终端的接入网设备发送所述侧行链路的上下文信息。
  35. 根据权利要求32-34中任一项所述的通信装置，所述收发单元，还用于接收第一指示信息，所述第一指示信息用于指示所述侧行链路的通信结束；
    所述处理单元，还用于根据所述第一指示信息对所述第一终端进行计费统计，和/或， 通过所述收发单元向所述第一终端的接入网设备发送所述第一指示信息。
  36. 根据权利要求32-35中任一项所述的通信装置，所述收发单元还用于：
    接收第二指示信息，所述第二指示信息用于指示所述第一终端发生跨接入网设备的切换；
    向所述第一终端在发生所述跨接入网设备的切换之前的接入网设备发送所述第二指示信息。
  37. 一种通信装置，其特征在于，包括处理器和存储器；
    所述存储器，用于存储计算机程序；
    所述处理器，用于调用所述存储器中存储的计算机程序，以执行如权利要求1-18中任一项所述的方法。
  38. 一种计算机可读存储介质，其特征在于，所述可读存储介质存储有计算机程序，当所述计算机程序运行时，实现如权利要求1-18中任一项所述的方法。
  39. 一种计算机程序产品，当其在处理器上运行时，使得处理器执行权利要求1-18中任一项所述的方法。
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