A direct communication method, AMF, access network functional entity and computer storage medium

Abstract

The present invention discloses a direct communication method, AMF, access network functional entity, and computer storage medium to better meet the QoS requirements of V2X service transmission. The direct communication method includes: a first terminal sending a direct communication request message to a second terminal, the request message carrying a direct communication quality of service (QoS) parameter; the first terminal receiving a direct communication response message from the second terminal determined based on the direct communication QoS parameter, the direct communication response message indicating whether the second terminal accepts or rejects the first terminal's request; and if the direct communication response message indicates that the second terminal accepts the first terminal's request, the first terminal establishing a direct communication connection with the second terminal based on the direct communication response message.

Description

[0001] This application is a divisional application. The application number of the original application is 201810908258.X, the application date of the original application is August 10, 2018, and the name of the original application is "A direct communication method, AMF, access network functional entity and computer storage medium". The entire content of the original application is incorporated into this application by reference. Technical Field

[0002] The present invention relates to the field of communication technology, and in particular to a direct communication method, AMF, an access network functional entity, and a computer storage medium. Background Art

[0003] The communication process of direct communication between two user equipments (UE) defined in the 3rd Generation Partnership Project (3GPP). Figure 1 As shown, two terminal devices, such as UE1 and UE2, can transmit through a direct communication path between them without passing through network devices, such as a base station.

[0004] The wireless air interface technology (NR) of the fifth generation mobile communication technology (5Generation, 5G) network supports the exchange of information between vehicles and the outside world (Vehicle to X, V2X) to facilitate traffic management. Currently, the NR system supports enhanced V2X services, such as platooning. The enhanced V2X service not only has higher requirements for transmission delay and transmission reliability, but also has requirements for other performance indicators such as load. 3GPP Rel-14 defines a QoS implementation method, which mainly includes two indicators: PPPP (ProSe Per-Packet Priority) and PPPR (ProSe Per-Packet Reliability). Among them, PPPP represents the delay requirement and PPPR represents the reliability requirement. However, the QoS implementation method defined by 3GPP Rel-14 can no longer meet the transmission of enhanced V2X services.

[0005] It can be seen that the current QoS implementation method cannot well meet the QoS requirements of V2X service transmission. Summary of the Invention

[0006] The embodiments of the present invention provide a direct communication method, AMF, access network functional entity, and computer storage medium to better meet the QoS requirements of V2X service transmission.

[0007] In a first aspect, a direct communication method is provided, the method comprising:

[0008] The first terminal sends a direct communication request message to the second terminal, where the request message carries a direct communication quality of service QoS parameter;

[0009] The first terminal receives a direct communication response message determined by the second terminal according to the direct communication QoS parameter, where the direct communication response message is used to instruct the second terminal to accept or reject the request of the first terminal;

[0010] If the direct communication response message indicates that the second terminal accepts the request of the first terminal, the first terminal establishes a direct communication connection with the second terminal according to the direct communication response message.

[0011] In the implementation of the present invention, before establishing a direct communication connection, the first terminal and the second terminal negotiate the QoS parameters of the direct communication service to be transmitted. The direct communication connection is only established when the second terminal can meet the QoS requirements of the direct communication service to be transmitted by the first terminal, thereby better meeting the QoS requirements of the direct communication service.

[0012] Optionally, if the direct communication response message indicates that the second terminal accepts the request of the first terminal, the direct communication response message includes QoS parameters accepted by the second terminal.

[0013] In the implementation of the present invention, if the second terminal accepts the request of the first terminal, it can feed back the QoS parameters accepted by the second terminal to the first terminal, thereby facilitating the first terminal to re-determine the QoS parameters of the direct communication service to be transmitted.

[0014] Optionally, before the first terminal sends the direct communication request message to the second terminal, the method further includes:

[0015] The first terminal receives a non-access layer message sent from an access control and mobility management function AMF entity, where the non-access layer message includes a direct communication QoS rule and / or a QoS parameter;

[0016] The first terminal determines the direct communication QoS parameter according to the non-access layer message.

[0017] In an embodiment of the present invention, the first terminal determines the QoS parameters of the direct communication service to be transmitted based on the direct communication QoS rules and / or QoS parameters fed back by the AMF, that is, the direct communication QoS parameters are determined based on the feedback from the network side, which not only meets the capabilities supported by the network side, but also meets its own needs.

[0018] Optionally, before the first terminal receives the non-access layer message sent from the access control and mobility management function AMF entity, the further comprising:

[0019] The first terminal sends a non-access layer request message to the AMF entity, wherein the request message includes information that the first terminal requests direct communication QoS parameters and / or information that the first terminal supports direct communication capabilities.

[0020] In an embodiment of the present invention, the first terminal informs the AMF entity of the direct communication QoS parameters to be requested and / or the direct communication capabilities supported by the first terminal, so that the AMF entity recommends matching direct communication QoS parameters for the first terminal.

[0021] Optionally, after the first terminal establishes a direct communication connection with the second terminal according to the direct communication response message, the method further includes:

[0022] The first terminal sends a radio resource control request message to the access network function entity, where the radio resource control request message is used to request radio resources required for the direct communication service, wherein the radio resource control request message carries the direct communication QoS parameter;

[0023] The first terminal receives a radio resource control response message returned by the access network function entity, wherein the radio resource control response message includes radio resources determined by the access network function entity according to the direct communication QoS parameter;

[0024] The first terminal uses the radio resources carried in the radio resource control response message to perform a direct connection communication service.

[0025] In an embodiment of the present invention, the first terminal requests wireless resources from the access network functional entity, and the access network functional entity allocates wireless resources to the first terminal based on the QoS requirements of the first terminal. In this way, the first terminal uses the requested wireless resources to transmit direct communication services, which can better meet the QoS requirements of the direct communication services.

[0026] Optionally, the first terminal determining the direct communication QoS parameter according to the non-access layer message includes:

[0027] The first terminal determines the direct communication QoS parameter according to the direct communication QoS rule carried by the non-access layer message;

[0028] The first terminal transmits the direct communication QoS parameter from the non-access layer to the access layer.

[0029] In the embodiment of the present invention, after determining the direct communication QoS parameters at the non-access layer, the first terminal transfers the direct communication QoS parameters from the non-access layer to the access layer so that the access network function entity performs authorization check on the direct communication QoS parameters.

[0030] In a second aspect, a direct communication method is provided, the method comprising:

[0031] The access control and mobility management function AMF entity receives a non-access layer request message sent by the first terminal, where the request message includes information that the first terminal requests direct communication QoS parameters and / or information that the first terminal supports direct communication capabilities;

[0032] The AMF entity sends a non-access layer message to the first terminal, where the non-access layer message includes direct communication QoS rules and / or QoS parameters.

[0033] In an embodiment of the present invention, the AMF feeds back direct communication QoS rules and / or QoS parameters to the first terminal based on the non-access layer request message of the first terminal, so that the first terminal determines the final direct communication QoS parameters based on its own QoS requirements and the QoS parameters supported by the network side, so as to better meet the actual QoS requirements of the first terminal for direct communication services.

[0034] Optionally, after the AMF entity sends a non-access layer message to the first terminal, the method further includes:

[0035] The AMF entity sends an application message to the access network function entity, where the application message includes the first terminal direct communication QoS parameter.

[0036] In an embodiment of the present invention, the AMF entity feeds back the direct communication QoS parameters of the first terminal to the access network function entity, so that the access network function entity performs an authorization check on the direct communication QoS parameters before the first terminal performs the direct communication service, and the access network function entity controls the direct communication service performed by the first terminal.

[0037] Optionally, after the access control and mobility management function AMF entity receives the non-access layer request message sent by the first terminal, the method further includes:

[0038] The AMF entity sends the information that the first terminal requests direct communication QoS parameters and / or the information that the first terminal supports direct communication capabilities to the policy control function entity and / or the unified data management function entity.

[0039] Optionally, before the access control and mobility management function AMF entity sends a non-access layer message to the terminal or sends an application message to the access network function entity, the method further includes:

[0040] The AMF entity receives the first terminal direct communication QoS parameter information and / or direct communication QoS rule information from the policy control function entity and / or the unified data management function entity.

[0041] In an embodiment of the present invention, a new method is provided, namely, the AMF entity determines the direct communication QoS parameter information and / or direct communication QoS rule information fed back to the first terminal through the policy control function entity and / or the unified data management function entity.

[0042] In a third aspect, a direct communication method is provided, the method comprising:

[0043] The access network function entity receives a radio resource control request message sent by the first terminal, where the radio resource control request message includes direct communication quality of service QoS parameter information;

[0044] The access network function entity sends a radio resource control response message to the first terminal, where the radio resource control response message includes radio resource information required for the direct connection communication service.

[0045] Optionally, before the access network function entity receives the radio resource control request message sent by the first terminal, the method further includes:

[0046] The access network function entity receives the direct connection communication QoS parameters of the first terminal from the access control and mobility management function AMF entity;

[0047] The access network function entity determines the wireless resources required by the first terminal for performing the direct connection communication service according to the direct connection communication QoS parameter of the first terminal.

[0048] In an embodiment of the present invention, the first terminal requests wireless resources from the access network functional entity, and the access network functional entity allocates wireless resources to the first terminal based on the QoS requirements of the first terminal. In this way, the first terminal uses the requested wireless resources to transmit direct communication services, which can better meet the QoS requirements of the direct communication services.

[0049] In a fourth aspect, a terminal is provided, the terminal including:

[0050] a memory for storing instructions;

[0051] The processor is configured to read the instructions in the memory and execute the following processes:

[0052] Sending a direct communication request message to the second terminal through the transceiver, wherein the request message carries a direct communication quality of service QoS parameter;

[0053] receiving, through a transceiver, a direct connection communication response message determined by the second terminal according to the direct connection communication QoS parameter, where the direct connection communication response message is used to instruct the second terminal to accept or reject the request of the first terminal;

[0054] If the direct communication response message indicates that the second terminal accepts the request of the first terminal, establishing a direct communication connection with the second terminal according to the direct communication response message;

[0055] The transceiver is used to send and receive data under the control of the processor.

[0056] Optionally, if the direct communication response message indicates that the second terminal accepts the request of the terminal, the direct communication response message includes QoS parameters accepted by the second terminal.

[0057] Optionally, the processor is further configured to:

[0058] Receiving, by the transceiver, a non-access layer message sent from an access control and mobility management function AMF entity, wherein the non-access layer message includes a direct communication QoS rule and / or a QoS parameter;

[0059] The direct communication QoS parameter is determined according to the non-access layer message.

[0060] Optionally, the processor is further configured to:

[0061] A non-access layer request message is sent to the AMF entity through the transceiver, wherein the request message includes information that the first terminal requests direct communication QoS parameters and / or information that the first terminal supports direct communication capabilities.

[0062] Optionally, the processor is further configured to:

[0063] Sending a radio resource control request message to an access network function entity through the transceiver, where the radio resource control request message is used to request radio resources required for a direct communication service, wherein the radio resource control request message carries the direct communication QoS parameter;

[0064] Receiving, by the transceiver, a radio resource control response message returned from the access network function entity, wherein the radio resource control response message includes radio resources determined by the access network function entity according to the direct communication QoS parameter;

[0065] The wireless resources carried in the wireless resource control response message are used to perform a direct connection communication service.

[0066] Optionally, the processor is further configured to:

[0067] Determining the direct communication QoS parameter according to the direct communication QoS rule carried by the non-access layer message;

[0068] The direct communication QoS parameter is transferred from the non-access layer to the access layer.

[0069] The technical effects of the terminal provided by the embodiment of the present invention can be referred to the technical effects of the various implementation methods of the first aspect above, and will not be repeated here.

[0070] In a fifth aspect, an access control and mobility management function (AMF) entity is provided, the AMF entity including:

[0071] a memory for storing instructions;

[0072] The processor is configured to read the instructions in the memory and execute the following processes:

[0073] Receiving, by a transceiver, a non-access layer request message sent by a first terminal, where the request message includes information that the first terminal requests a direct communication QoS parameter and / or information that the first terminal supports a direct communication capability;

[0074] Sending a non-access stratum message to the first terminal through the transceiver, where the non-access stratum message includes a direct communication QoS rule and / or a QoS parameter;

[0075] The transceiver is used to send and receive data under the control of the processor.

[0076] Optionally, the processor is further configured to:

[0077] An application message is sent to an access network function entity through the transceiver, where the application message includes the first terminal direct connection communication QoS parameter.

[0078] Optionally, the processor is further configured to:

[0079] The information that the first terminal requests the direct connection communication QoS parameter and / or the information that the first terminal supports the direct connection communication capability is sent to the policy control function entity and / or the unified data management function entity through the transceiver.

[0080] Optionally, the processor is further configured to:

[0081] The first terminal direct connection communication QoS parameter information and / or direct connection communication QoS rule information is received from the policy control function entity and / or the unified data management function entity through the transceiver.

[0082] The technical effects of the AMF provided by the embodiment of the present invention can be referred to the technical effects of the various implementation methods of the second aspect above, and will not be repeated here.

[0083] In a sixth aspect, an access network function entity is provided, the access network function entity including:

[0084] a memory for storing instructions;

[0085] The processor is configured to read the instructions in the memory and execute the following processes:

[0086] Receiving, through the transceiver, a radio resource control request message sent by the first terminal, wherein the radio resource control request message includes direct communication quality of service QoS parameter information;

[0087] Sending a radio resource control response message to the first terminal by the transceiver, where the radio resource control response message includes radio resource information required for the direct connection communication service;

[0088] The transceiver is used to send and receive data under the control of the processor.

[0089] Optionally, the processor is further configured to:

[0090] Receiving, by the transceiver, a direct connection communication QoS parameter of the first terminal from an access control and mobility management function AMF entity;

[0091] Determine, based on the direct connection communication QoS parameter of the first terminal, the radio resources required by the first terminal for performing the direct connection communication service.

[0092] The technical effects of the access network functional entity provided by the embodiment of the present invention can be referred to the technical effects of the various implementation methods of the third aspect mentioned above, and will not be repeated here.

[0093] In a seventh aspect, a terminal is provided, the terminal including:

[0094] a sending unit, configured to send a direct communication request message to the second terminal, wherein the request message carries a direct communication quality of service QoS parameter;

[0095] a receiving unit, configured to receive a direct communication response message determined by the second terminal according to the direct communication QoS parameter, wherein the direct communication response message is used to instruct the second terminal to accept or reject the request of the first terminal;

[0096] An establishing unit is configured to establish a direct communication connection with the second terminal according to the direct communication response message if the direct communication response message indicates that the second terminal accepts the request of the first terminal.

[0097] In an eighth aspect, an access control and mobility management function (AMF) entity is provided, the AMF entity including:

[0098] a receiving unit, configured to receive a non-access stratum request message sent by a first terminal, wherein the request message includes information that the first terminal requests a direct communication QoS parameter and / or information that the first terminal supports a direct communication capability;

[0099] A sending unit is configured to send a non-access stratum message to the first terminal, where the non-access stratum message includes a direct communication QoS rule and / or a QoS parameter.

[0100] In a ninth aspect, an access network function entity is provided, the access network function entity including:

[0101] A receiving unit, configured to receive a radio resource control request message sent by the first terminal, wherein the radio resource control request message includes direct communication quality of service QoS parameter information;

[0102] The sending unit is configured to send a radio resource control response message to the first terminal, where the radio resource control response message includes radio resource information required for the direct connection communication service.

[0103] In a tenth aspect, a computer storage medium is provided, on which a computer program is stored, and when the computer program is executed by a processor, the method as described in any one of the first aspect, the second aspect or the third aspect is implemented.

[0104] In the implementation of the present invention, before establishing a direct communication connection, the first terminal and the second terminal negotiate the QoS parameters of the direct communication service to be transmitted. The direct communication connection is only established when the second terminal can meet the QoS requirements of the direct communication service to be transmitted by the first terminal, thereby better meeting the QoS requirements of the direct communication service. BRIEF DESCRIPTION OF THE DRAWINGS

[0105] Figure 1 This is a system architecture diagram of direct communication provided by an embodiment of the present invention;

[0106] Figure 2 1 is a schematic diagram of a direct communication process according to an embodiment of the present invention;

[0107] Figure 3 A schematic diagram of a process for a first terminal to determine a direct communication QoS parameter according to an embodiment of the present invention;

[0108] Figure 4 A schematic diagram of a process for a first terminal to request wireless resources from an access network provided in an embodiment of the present invention;

[0109] Figure 5 A schematic structural diagram of a first terminal provided in an embodiment of the present invention;

[0110] Figure 6 A schematic structural diagram of a first terminal provided in an embodiment of the present invention;

[0111] Figure 7 A schematic diagram of the structure of an AMF entity provided in an embodiment of the present invention;

[0112] Figure 8 A schematic diagram of the structure of an AMF entity provided in an embodiment of the present invention;

[0113] Figure 9 A schematic diagram of the structure of an access network functional entity provided in an embodiment of the present invention;

[0114] Figure 10 A structural diagram of an access network functional entity provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0115] In order to make the objectives, technical solutions and advantages of the present invention more clearly understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

[0116] The transmission delay and transmission reliability corresponding to the quality of service (QoS) parameters supported by 3GPP Rel-14 can no longer meet the transmission requirements of enhanced V2X services.

[0117] In view of this, an embodiment of the present invention provides a method for direct communication, in which, before establishing a direct communication connection, the first terminal and the second terminal negotiate the QoS parameters of the direct communication service to be transmitted. The direct communication connection is only established when the second terminal can meet the QoS requirements of the direct communication service to be transmitted by the first terminal, thereby better meeting the QoS requirements of the direct communication service.

[0118] The technical solutions provided by the embodiments of the present invention are described below with reference to the accompanying drawings.

[0119] See Figure 2 An embodiment of the present invention provides a method for direct communication, which is performed by a first terminal. The process of the method is described as follows. Since the direct communication method also involves interaction processes with a second terminal, network-side equipment, such as an access control and mobility management function (AMF) entity or a user plane function (UPF) entity, and an access network function entity, such as a radio access network (RAN) entity, in the following process description, the processes performed by the second terminal, the AMF entity or the UPF entity, and the RAN entity side will be described together.

[0120] S201: A first terminal sends a direct communication request message to a second terminal, where the request message carries a direct communication QoS parameter.

[0121] In an embodiment of the present invention, a direct communication service, such as the transmission of a V2X service, is to be performed between the first terminal and the second terminal. Therefore, the first terminal may send a direct communication request message to the second terminal to request to establish a direct communication connection with the second terminal. Since the V2X service to be transmitted by the first terminal, such as enhanced V2X services, such as platooning, advanced driving, extended sensors, and remote driving, has high requirements on latency, reliability, transmission rate, load, etc., the second terminal may not be able to meet these requirements. Therefore, if the first terminal and the second terminal perform direct communication through broadcasting according to the existing technology, the V2X service may not be transmitted between the two.

[0122] Therefore, in an embodiment of the present invention, a first terminal may send a direct communication request message carrying direct communication QoS parameters to be met to a second terminal. Based on the received direct communication request message, the second terminal determines the direct communication QoS parameters that must be met for the V2X service to be transmitted by the first terminal, thereby determining whether to establish a direct communication connection with the first terminal.

[0123] S202: The first terminal receives a direct communication response message determined by the second terminal according to the direct communication QoS parameter, where the direct communication response message is used to instruct the second terminal to accept or reject the request of the first terminal.

[0124] After the second terminal determines the direct communication QoS parameters that the V2X service to be transmitted by the first terminal must meet, if the second terminal determines that it cannot meet the first terminal's requirements for the direct communication QoS parameters, the second terminal sends a direct communication response message to the first terminal, informing the first terminal that the direct communication QoS parameter requirements cannot be met and rejecting the first terminal's direct communication connection request. In a possible implementation, the direct communication response message does not carry any direct communication QoS parameters, or the direct communication response message carries identification information indicating the rejection of the direct communication connection request.

[0125] Conversely, if the second terminal determines that it can meet the first terminal's requirements for direct communication QoS parameters, the second terminal sends a direct communication response message to the first terminal to inform the first terminal that it can meet the direct communication QoS parameter requirements and accept the first terminal's direct communication connection request. In a possible implementation, the direct communication response message includes QoS parameters acceptable to the second terminal. The QoS parameters may be the direct communication QoS parameters carried in the direct communication connection request message, or other direct communication QoS parameters acceptable to the second terminal.

[0126] S203: If the direct communication response message indicates that the second terminal accepts the request of the first terminal, the first terminal establishes a direct communication connection with the second terminal according to the direct communication response message.

[0127] In an embodiment of the present invention, if it is determined that the direct communication response message indicates that the second terminal accepts the direct communication connection request of the first terminal, the first terminal establishes a direct communication connection with the second terminal. In a possible implementation, the first terminal may establish a direct communication connection with the second terminal based on the direct communication QoS parameters carried in the direct communication response message to meet the QoS requirements of the direct communication service transmitted by the first terminal.

[0128] In an embodiment of the present invention, before establishing a direct communication connection, the first terminal and the second terminal negotiate the QoS parameters of the direct communication service to be transmitted. The direct communication connection is only established when the second terminal can meet the QoS requirements of the direct communication service to be transmitted by the first terminal, thereby better meeting the QoS requirements of the direct communication service.

[0129] Since the direct communication services transmitted by the first terminal are different, the QoS requirements that need to be met may also be different. For example, the enhanced V2X services include four typical services, including platooning, advanced driving, extended sensors, and remote driving. Each type of service corresponds to different QoS requirements. For another example, for each type of service, an automation level (LoA, Level of Automation) is also defined, including multiple levels such as no automation, driver assistance, partial automation, conditional automation, advanced automation, and full automation. Each automation level corresponds to different QoS requirements. Therefore, before the first terminal establishes a direct communication connection with the second terminal, it needs to determine the direct communication QoS parameters based on the direct communication service to be transmitted.

[0130] For details, see Figure 3 In an embodiment of the present invention, before sending a direct communication request message to a second terminal, the first terminal needs to determine a direct communication QoS parameter.

[0131] S301. The first terminal sends a non-access layer request message to the AMF.

[0132] Specifically, the non-access stratum request message carries information requesting direct communication QoS parameters by the first terminal and / or information about the first terminal's support for direct communication capabilities. The information requesting direct communication QoS parameters may be information about the direct communication service to be transmitted by the first terminal, for example, identification information of the direct communication service. The information about the first terminal's support for direct communication capabilities may be considered as QoS requirements that can be met by the first terminal.

[0133] S302. The first terminal receives a non-access layer message sent by the AMF.

[0134] In an embodiment of the present invention, after the AMF receives the non-access layer request message sent by the first terminal, it determines that the first terminal is requesting to determine the direct communication QoS parameters for the direct communication service to be transmitted. In a possible implementation method, after the AMF receives the non-access layer request message sent by the first terminal, it transparently forwards it to the policy control function (PCF) entity. The PCF entity feeds back the direct communication QoS rules and / or QoS parameters to the AMF, and the AMF then feeds back the non-access layer message to the first terminal, and the non-access layer message includes the direct communication QoS rules and / or QoS parameters. The direct communication QoS rules can be understood as a mapping relationship between communication services and QoS parameters, which may be a mapping relationship between each type of service and QoS parameters, or a mapping relationship between each level under each type of service and QoS parameters.

[0135] In a possible implementation, the direct communication QoS rule may include a QoS flow identifier QFI, service priority, etc. QoS parameters may include bit rate, transmission rate, transmission delay, etc., which are not listed here one by one.

[0136] The AMF may feed back QoS parameters to the first terminal to inform the first terminal of the QoS parameters of the direct communication service corresponding to the first terminal. Alternatively, the AMF may also feed back direct communication QoS rules to the first terminal so that the first terminal further determines the QoS parameters of the direct communication service to be transmitted based on the direct communication QoS rules. Alternatively, the AMF may also directly feed back QoS parameters and direct communication QoS rules to the first terminal, and the first terminal determines the QoS parameters of the direct communication service to be transmitted.

[0137] In a possible implementation manner, the AMF may send the feedback QoS parameters and / or direct communication QoS rules to the first terminal via a non-access stratum (NAS) message.

[0138] S303. The first terminal device determines the direct communication QoS parameters according to the non-access layer message.

[0139] In an embodiment of the present invention, the first terminal may directly determine the QoS parameters carried in the non-access stratum message as the QoS parameters of the direct communication service to be transmitted. Alternatively, the first terminal may determine the direct communication QoS parameters based on the direct communication QoS rules carried in the non-access stratum message and the direct communication service to be transmitted by the first terminal.

[0140] See Figure 4In this embodiment of the present invention, after a direct communication connection is established between a first terminal and a second terminal, the first terminal may use the determined direct communication QoS parameters to transmit direct communication service messages. During the transmission of the direct communication service messages, the first terminal may request radio resources from a RAN entity for the transmission of the direct communication service.

[0141] S401. A first terminal sends a radio resource control request message to a RAN entity.

[0142] In the embodiment of the present invention, the radio resource control request message is used to request radio resources required for the direct communication service, wherein the radio resource control request message carries the direct communication QoS parameters.

[0143] Specifically, S4011, the first terminal device sends information requesting direct communication QoS parameters and / or information indicating that the first terminal supports direct communication capabilities to the AMF.

[0144] S4012. The AMF entity sends information that the first terminal requests direct communication QoS parameters and / or information that the first terminal supports direct communication capabilities to the PCF entity or the Unified Data Manager (UDM) entity. Figure 4 Take the example of the AMF entity sending information that the first terminal requests direct communication QoS parameters and / or information that the first terminal supports direct communication capabilities to the UDM entity.

[0145] S4013. The UDM entity sends the first terminal direct communication QoS parameter information and / or direct communication QoS rule information to the AMF entity.

[0146] The UDM entity performs an authorization check on the direct communication QoS parameters requested by the first terminal based on the received direct communication QoS parameter information and / or direct communication QoS rule information of the first terminal. If the authorization check passes, the UDM entity feeds back the contract information of the first terminal to the AMF entity, including the authorization information of the direct communication service, and the QoS parameters of the direct communication service.

[0147] S4014. The AMF entity sends the first terminal direct communication QoS parameter information and / or direct communication QoS rule information to the RAN entity.

[0148] The RAN entity allocates radio resources to the direct connection communication service of the first terminal according to the received subscription information of the first terminal, so that the first terminal uses the allocated radio resources to transmit the direct connection communication service.

[0149] S402. The first terminal receives a radio resource control response message returned from the RAN entity, where the radio resource control response message includes radio resources determined by the RAN entity according to the direct communication QoS parameters;

[0150] S403: The first terminal uses the radio resources carried in the radio resource control response message to perform a direct connection communication service.

[0151] exist Figure 4 The dotted line in the figure indicates the process after the RAN entity receives the radio resource control request message sent by the first terminal. It should be noted that after the first terminal determines the direct communication QoS parameters according to the non-access layer message, the direct communication QoS parameters are passed from the non-access layer to the access layer.

[0152] In summary, in an embodiment of the present invention, before establishing a direct communication connection, the first terminal and the second terminal negotiate the QoS parameters of the direct communication service to be transmitted. The direct communication connection is only established when the second terminal can meet the QoS requirements of the direct communication service to be transmitted by the first terminal, thereby better meeting the QoS requirements of the direct communication service.

[0153] In an embodiment of the present invention, the network side provides QoS rules and / or QoS parameters for the first terminal so that the first terminal determines the final QoS parameters based on its actual QoS requirements, thereby better meeting its actual QoS requirements when conducting direct communication services with the second terminal.

[0154] In the embodiment of the present invention, the access network side allocates wireless resources to the first terminal according to the actual QoS requirements of the first terminal itself, so that the first terminal can better meet its actual QoS requirements when using the wireless resources allocated by the access network side for direct communication services.

[0155] The following describes the device provided by the embodiment of the present invention with reference to the accompanying drawings.

[0156] See Figure 5 Based on the same inventive concept, an embodiment of the present invention provides a terminal, which can be a mobile phone or a vehicle, etc. The terminal can include: a memory 501, a processor 502 and a transceiver 503. The memory 501 and the transceiver 503 can be connected to the processor 502 via a bus interface ( Figure 5 Taking this as an example), or it can be connected to the processor 502 through a dedicated connection line.

[0157] The memory 501 can be used to store programs. The transceiver 503 is used to send and receive data under the control of the processor. The processor 502 can be used to read the program in the memory 501 and perform the following processes:

[0158] Sending a direct communication request message to the second terminal through the transceiver 503, where the request message carries a direct communication quality of service QoS parameter;

[0159] Receiving, through the transceiver 503, a direct connection communication response message determined by the second terminal according to the direct connection communication QoS parameter, where the direct connection communication response message is used to instruct the second terminal to accept or reject the request of the first terminal;

[0160] If the direct communication response message indicates that the second terminal accepts the request of the first terminal, a direct communication connection is established with the second terminal according to the direct communication response message.

[0161] Optionally, if the direct communication response message indicates that the second terminal accepts the terminal's request, the direct communication response message includes QoS parameters accepted by the second terminal.

[0162] Optionally, the processor 502 is further configured to:

[0163] Receiving a non-access layer message sent from an access and mobility management function AMF entity through the transceiver 503, where the non-access layer message includes a direct communication QoS rule and / or QoS parameters;

[0164] Determine the direct connection communication QoS parameters according to the non-access layer message.

[0165] Optionally, the processor 502 is further configured to:

[0166] A non-access layer request message is sent to the AMF through the transceiver 503, wherein the request message includes information that the first terminal requests direct communication QoS parameters and / or information that the first terminal supports direct communication capabilities.

[0167] Optionally, the processor 502 is further configured to:

[0168] Sending a radio resource control request message to the access network function entity through the transceiver 503, where the radio resource control request message is used to request radio resources required for the direct communication service, wherein the radio resource control request message carries the direct communication QoS parameters;

[0169] Receiving a radio resource control response message returned from the access network function entity through the transceiver 503, wherein the radio resource control response message includes the radio resources determined by the access network function entity according to the direct communication QoS parameters;

[0170] The wireless resources carried in the radio resource control response message are used to perform direct connection communication services.

[0171] Optionally, the processor 502 is further configured to:

[0172] Determine the direct communication QoS parameters according to the direct communication QoS rules carried by the non-access layer message;

[0173] The direct communication QoS parameters are passed from the non-access layer to the access layer.

[0174] Among them, Figure 5 In the embodiment, the bus architecture can include any number of interconnected buses and bridges, specifically linking various circuits of one or more processors represented by processor 502 and memory represented by memory 501. The bus architecture can also link various other circuits such as peripheral devices, voltage regulators, and power management circuits, which are well known in the art and therefore will not be described further herein. The bus interface provides an interface. The transceiver 503 can be multiple components, including a transmitter and a transceiver, providing a unit for communicating with various other devices over a transmission medium. The processor 502 is responsible for managing the bus architecture and general processing, and the memory 501 can store data used by the processor 502 when performing operations.

[0175] Optionally, the memory 501 may include a read-only memory (ROM), a random access memory (RAM), and a disk memory. The memory 501 is used to store data required by the processor 502 when it is running, that is, it stores instructions that can be executed by at least one processor 502. At least one processor 502 executes the instructions stored in the memory 501 to execute the program. Figure 2-Figure 4 The embodiment shown provides a direct communication method. The number of the memory 501 is one or more. The memory 501 is Figure 5 It is shown together, but it should be noted that the memory 501 is not a required functional module, so Figure 5 Shown in dashed lines.

[0176] See Figure 6 Based on the same inventive concept, an embodiment of the present invention provides a terminal, which can be a mobile phone, a vehicle, etc. The terminal is the first terminal mentioned above and may include: a sending unit 601, a receiving unit 602 and an establishing unit 603. Among them, the sending unit 601 is used to send a direct communication request message to the second terminal, and the request message carries a direct communication service quality QoS parameter. The receiving unit 602 is used to receive a direct communication response message determined by the second terminal according to the direct communication QoS parameter, and the direct communication response message is used to indicate whether the second terminal accepts or rejects the request of the first terminal. The establishing unit 603 is used to establish a direct communication connection with the second terminal according to the direct communication response message if the direct communication response message indicates that the second terminal accepts the request of the first terminal.

[0177] Optionally, if the direct communication response message indicates that the second terminal accepts the request of the first terminal, the direct communication response message includes the QoS parameters accepted by the second terminal.

[0178] Optionally, the receiving unit 602 is further configured to:

[0179] Receive a non-access layer message sent from an access and mobility management function (AMF) entity, where the non-access layer message includes a direct communication QoS rule and / or QoS parameters;

[0180] Determine the direct connection communication QoS parameters according to the non-access layer message.

[0181] Optionally, the sending unit 601 is further configured to:

[0182] Send a non-access layer request message to the AMF, wherein the request message includes information that the first terminal requests direct communication QoS parameters and / or information that the first terminal supports direct communication capabilities.

[0183] Optionally, the sending unit 601 is further configured to: send a radio resource control request message to the access network function entity, where the radio resource control request message is used to request radio resources required for the direct communication service, wherein the radio resource control request message carries a direct communication QoS parameter;

[0184] The receiving unit 602 is further configured to: receive a radio resource control response message returned from the access network function entity, wherein the radio resource control response message includes radio resources determined by the access network function entity according to the direct communication QoS parameters;

[0185] The establishing unit 603 is further configured to: utilize the radio resources carried in the radio resource control response message to perform a direct connection communication service.

[0186] Optionally, the establishing unit 603 is specifically configured to:

[0187] Determine the direct communication QoS parameters according to the direct communication QoS rules carried by the non-access layer message;

[0188] The direct communication QoS parameters are passed from the non-access layer to the access layer.

[0189] The entity devices corresponding to the sending unit 601, the receiving unit 602 and the establishing unit 603 can all be the aforementioned processor 502 or transceiver 503. Figure 2-Figure 4 Therefore, for the functions that can be realized by each functional module in the device, please refer to Figure 2-Figure 4 The corresponding description in the illustrated embodiment will not be repeated here.

[0190] See Figure 7 Based on the same inventive concept, an embodiment of the present invention provides an AMF entity, which may include: a memory 701, a processor 702, and a transceiver 703. The memory 701 and the transceiver 703 may be connected to the processor 702 via a bus interface ( Figure 7 Taking this as an example), or it can be connected to the processor 702 through a dedicated connection line.

[0191] The memory 701 can be used to store programs. The transceiver 703 is used to send and receive data under the control of the processor 702. The processor 702 can be used to read the program in the memory 701 and perform the following processes:

[0192] Receiving, through the transceiver 703, a non-access layer request message sent by the first terminal, where the request message includes information that the first terminal requests a direct communication QoS parameter and / or information that the first terminal supports a direct communication capability;

[0193] Sending a non-access layer message to the first terminal through the transceiver, where the non-access layer message includes a direct communication QoS rule and / or a QoS parameter;

[0194] Optionally, the processor 702 is further configured to:

[0195] An application message is sent to the access network function entity through the transceiver 703, where the application message includes the first terminal direct connection communication QoS parameter.

[0196] Optionally, the processor 702 is further configured to:

[0197] The transceiver 703 sends the information that the first terminal requests the direct connection communication QoS parameters and / or the information that the first terminal supports the direct connection communication capability to the policy control function entity and / or the unified data management function entity.

[0198] Optionally, the processor 702 is further configured to:

[0199] The first terminal direct connection communication QoS parameter information and / or direct connection communication QoS rule information are received from the policy control function entity and / or the unified data management function entity through the transceiver 703 .

[0200] Among them, Figure 7In the embodiment, the bus architecture can include any number of interconnected buses and bridges, specifically linking various circuits of one or more processors represented by processor 702 and memory represented by memory 701. The bus architecture can also link various other circuits such as peripheral devices, voltage regulators, and power management circuits, which are well known in the art and therefore will not be described further herein. The bus interface provides an interface. The transceiver 703 can be multiple components, including a transmitter and a transceiver, providing a unit for communicating with various other devices over a transmission medium. The processor 702 is responsible for managing the bus architecture and general processing, and the memory 701 can store data used by the processor 702 when performing operations.

[0201] Optionally, the memory 701 may include a read-only memory (ROM), a random access memory (RAM), and a disk memory. The memory 701 is used to store data required by the processor 702 when it is running, that is, it stores instructions that can be executed by at least one processor 702. At least one processor 702 executes the instructions stored in the memory 701 to execute the program. Figure 2-Figure 4 The embodiment shown provides a direct communication method. The number of the memory 701 is one or more. The memory 701 is Figure 7 It is shown together, but it should be noted that the memory 701 is not a required functional module, so Figure 7 Shown in dashed lines.

[0202] See Figure 8 Based on the same inventive concept, an embodiment of the present invention provides an AMF entity, which may include: a receiving unit 801 and a sending unit 802. The receiving unit 801 is configured to receive a non-access stratum request message sent by a first terminal, where the request message includes information that the terminal requests direct communication QoS parameters and / or information that the terminal supports direct communication capabilities. The sending unit 802 is configured to send a non-access stratum message to the first terminal, where the non-access stratum message includes direct communication QoS rules and / or QoS parameters.

[0203] Optionally, the sending unit 802 is further configured to:

[0204] An application message is sent to the access network function entity, where the application message includes a first terminal direct connection communication QoS parameter.

[0205] Optionally, the sending unit 802 is further configured to:

[0206] The information that the first terminal requests the direct connection communication QoS parameter and / or the information that the first terminal supports the direct connection communication capability is sent to the policy control function entity and / or the unified data management function entity.

[0207] Optionally, the receiving unit 801 is further configured to:

[0208] Receive first terminal direct connection communication QoS parameter information and / or direct connection communication QoS rule information from a policy control function entity and / or a unified data management function entity.

[0209] The physical devices corresponding to the receiving unit 801 and the sending unit 802 can be the aforementioned processor 702 or transceiver 703. The AMF entity can be used to perform Figure 2-Figure 4 Therefore, for the functions that can be realized by each functional module in the device, please refer to Figure 2-Figure 4 The corresponding description in the illustrated embodiment will not be repeated here.

[0210] See Figure 9 Based on the same inventive concept, an embodiment of the present invention provides an access network functional entity, which may include: a memory 901, a processor 902, and a transceiver 903. The memory 901 and the transceiver 903 may be connected to the processor 902 via a bus interface ( Figure 9 Taking this as an example), or it can be connected to the processor 902 through a dedicated connection line.

[0211] The memory 901 can be used to store programs. The transceiver 903 is used to send and receive data under the control of the processor 902. The processor 902 can be used to read the program in the memory 901 and perform the following processes:

[0212] Receiving, through the transceiver 903, a radio resource control request message sent by the first terminal, where the radio resource control request message includes direct communication quality of service QoS parameter information;

[0213] A radio resource control response message is sent to the first terminal via the transceiver 903 , where the radio resource control response message includes radio resource information required for the direct connection communication service.

[0214] Optionally, the processor 902 is further configured to:

[0215] Receiving, through the transceiver 903, the direct connection communication QoS parameters of the first terminal from the access and mobility management function AMF entity;

[0216] The wireless resources required by the first terminal for performing the direct connection communication service are determined according to the direct connection communication QoS parameter of the first terminal.

[0217] Among them, Figure 9 In the embodiment, the bus architecture can include any number of interconnected buses and bridges, specifically linking together various circuits of one or more processors represented by processor 902 and memory represented by memory 901. The bus architecture can also link together various other circuits such as peripheral devices, voltage regulators, and power management circuits, which are all well known in the art and therefore will not be further described herein. The bus interface provides an interface. The transceiver 903 can be multiple components, that is, including a transmitter and a transceiver, providing a unit for communicating with various other devices on a transmission medium. The processor 902 is responsible for managing the bus architecture and general processing, and the memory 901 can store data used by the processor 902 when performing operations.

[0218] Optionally, the memory 901 may include a read-only memory (ROM), a random access memory (RAM), and a disk memory. The memory 901 is used to store data required by the processor 902 when it is running, that is, it stores instructions that can be executed by at least one processor 902. At least one processor 902 executes the instructions stored in the memory 901 to execute the program. Figure 2-Figure 4 The embodiment shown provides a direct communication method. The number of the memory 901 is one or more. The memory 901 is Figure 9 It is shown together, but it should be noted that the memory 901 is not a required functional module, so Figure 9 Shown in dashed lines.

[0219] See Figure 10 Based on the same inventive concept, an embodiment of the present invention provides an access network functional entity, which may include: a receiving unit 1001 and a sending unit 1002. The receiving unit 1001 is configured to receive a radio resource control request message sent by a first terminal, the radio resource control request message including direct connection communication quality of service (QoS) parameter information. The sending unit 1002 is configured to send a radio resource control response message to the first terminal, the radio resource control response message including radio resource information required for the direct connection communication service.

[0220] Optionally, the receiving unit 1001 is further configured to:

[0221] receiving a direct connection QoS parameter of the first terminal from an access and mobility management function (AMF);

[0222] The wireless resources required by the first terminal for performing the direct connection communication service are determined according to the direct connection communication QoS parameter of the first terminal.

[0223] The physical devices corresponding to the receiving unit 1001 and the sending unit 1002 can be the aforementioned processor 902 or transceiver 903. The access network function entity can be used to perform Figure 2-Figure 4 Therefore, for the functions that can be realized by each functional module in the device, please refer to Figure 2-Figure 4 The corresponding description in the illustrated embodiment will not be repeated here.

[0224] Based on the same inventive concept, an embodiment of the present invention further provides a computer storage medium, wherein the computer storage medium stores computer instructions, and when the computer instructions are executed on a computer, Figure 2-Figure 4 The illustrated embodiment provides a direct communication method.

[0225] In some possible implementations, the various aspects of the direct communication transmission method, AMF entity, PCF entity, UDM entity, and RAN entity provided by the present invention may also be implemented in the form of a program product, which includes a program code. When the program product is run on a computer device, the program code is used to enable the computer device to perform the steps of the direct communication method according to various exemplary embodiments of the present invention described above in this specification. For example, the computer device may perform the following steps. Figures 2 to 4 The embodiment shown in provides a method for direct communication.

[0226] The program product may employ any combination of one or more readable media. The readable medium may be a readable signal medium or a readable storage medium. The readable storage medium may be, for example, but not limited to, an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, device or component, or any combination thereof. More specific examples of readable storage media (a non-exhaustive list) include: an electrical connection having one or more wires, a portable disk, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination thereof.

[0227] The program product for the AMF selection method according to an embodiment of the present invention may be a portable compact disc read-only memory (CD-ROM) and include program code, and may be run on a computing device. However, the program product of the present invention is not limited thereto. In this document, a readable storage medium may be any tangible medium containing or storing a program that can be used by or in conjunction with an instruction execution system, apparatus, or device.

[0228] A readable signal medium may include a data signal propagated in baseband or as part of a carrier wave, which carries readable program code. Such propagated data signals may take a variety of forms, including, but not limited to, electromagnetic signals, optical signals, or any suitable combination thereof. A readable signal medium may also be any readable medium other than a readable storage medium that can transmit, propagate, or transfer a program for use by or in conjunction with an instruction execution system, apparatus, or device.

[0229] Program code embodied on a readable medium may be transmitted using any appropriate medium, including but not limited to wireless, wireline, optical fiber cable, RF, etc., or any suitable combination of the foregoing.

[0230] The program code for performing the operations of the present invention may be written in any combination of one or more programming languages, including object-oriented programming languages ​​such as Java, C++, and the like, as well as conventional procedural programming languages ​​such as "C" or similar programming languages. The program code may be executed entirely on the user computing device, partially on the user device, as a stand-alone software package, partially on the user computing device and partially on a remote computing device, or entirely on a remote computing device or server. In cases involving a remote computing device, the remote computing device may be connected to the user computing device via any type of network, including a local area network (LAN) or a wide area network (WAN), or may be connected to an external computing device (e.g., via the Internet using an Internet service provider).

[0231] It should be noted that although several units or subunits of the device are mentioned in the above detailed description, this division is merely exemplary and not mandatory. In fact, according to embodiments of the present invention, the features and functions of two or more units described above may be embodied in a single unit. Conversely, the features and functions of a single unit described above may be further divided and embodied by multiple units.

[0232] Furthermore, although the operations of the method of the present invention are described in a particular order in the accompanying drawings, this does not require or imply that these operations must be performed in this particular order, or that all illustrated operations must be performed to achieve the desired results. Additionally or alternatively, some steps may be omitted, multiple steps may be combined into one step, and / or one step may be decomposed into multiple steps.

[0233] It will be understood by those skilled in the art that embodiments of the present invention may be provided as methods, systems, or computer program products. Thus, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment combining software and hardware. Furthermore, the present invention may take the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to magnetic disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0234] The present invention is described with reference to flowcharts and / or block diagrams of methods, devices (systems), and computer program products according to embodiments of the present invention. It should be understood that each process and / or block in the flowcharts and / or block diagrams, as well as combinations of processes and / or blocks in the flowcharts and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing device to produce a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the processes in the flowcharts and / or block diagrams. Figure 1 a process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0235] These computer program instructions may also be stored in a computer readable memory that can direct a computer or other programmable data processing device to work in a specific manner, so that the instructions stored in the computer readable memory produce an article of manufacture comprising an instruction device, which implements the process Figure 1 a process or multiple processes and / or boxes Figure 1 The function specified in one or more boxes.

[0236] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operational steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing the instructions executed on the computer or other programmable device for implementing the process. Figure 1 a process or multiple processes and / or boxes Figure 1 A step that specifies a function in one or more boxes.

[0237] Although the preferred embodiments of the present invention have been described, those skilled in the art may make additional changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of the present invention.

[0238] Obviously, those skilled in the art may make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if such changes and modifications fall within the scope of the claims and their equivalents, the present invention is intended to include such changes and modifications.

Claims

1. A direct communication method, characterized in that: include: The first terminal receives a non-access layer message sent by an access control and mobility management function AMF entity, where the non-access layer message includes a direct communication quality of service QoS rule; The first terminal determines a direct communication QoS parameter according to the direct communication QoS rule carried by the non-access layer message; The first terminal sends a direct communication request message to the second terminal, where the request message carries the direct communication QoS parameter; The first terminal receives a direct communication response message determined by the second terminal according to the direct communication QoS parameter, where the direct communication response message is used to instruct the second terminal to accept or reject the request of the first terminal; If the direct communication response message indicates that the second terminal accepts the request of the first terminal, the first terminal establishes a direct communication connection with the second terminal according to the direct communication response message; Before the first terminal receives the non-access layer message sent by the access control and mobility management function AMF entity, the method further includes: The first terminal sends a non-access layer request message to the AMF entity, wherein the request message includes information that the first terminal requests direct communication QoS parameters and / or information that the first terminal supports direct communication capabilities.

2. The method according to claim 1, wherein If the direct communication response message indicates that the second terminal accepts the request of the first terminal, the direct communication response message includes the QoS parameters accepted by the second terminal.

3. The method according to claim 1, wherein After the first terminal establishes a direct communication connection with the second terminal according to the direct communication response message, the method further includes: The first terminal sends a radio resource control request message to the access network function entity, where the radio resource control request message is used to request radio resources required for the direct communication service, wherein the radio resource control request message carries the direct communication QoS parameter; The first terminal receives a radio resource control response message returned by the access network function entity, wherein the radio resource control response message includes radio resources determined by the access network function entity according to the direct communication QoS parameter; The first terminal uses the radio resources carried in the radio resource control response message to perform a direct connection communication service.

4. A terminal, characterized in that: include a memory for storing instructions; The processor is configured to read the instructions in the memory and execute the following processes: Receiving, through the transceiver, a non-access stratum message sent by the AMF entity, wherein the non-access stratum message includes a direct communication QoS rule; Determining the direct communication QoS parameter according to the direct communication QoS rule carried by the non-access layer message; Sending a direct communication request message to the second terminal through the transceiver, where the request message carries the direct communication QoS parameter; receiving, by the transceiver, a direct connection communication response message determined by the second terminal according to the direct connection communication QoS parameter, where the direct connection communication response message is used to instruct the second terminal to accept or reject the request of the terminal; If the direct communication response message indicates that the second terminal accepts the request of the terminal, establishing a direct communication connection with the second terminal according to the direct communication response message; The transceiver is used to send and receive data under the control of the processor; The processor is further used to: send a non-access layer request message to the AMF entity through the transceiver, wherein the request message includes information that the terminal requests direct communication QoS parameters and / or information that the terminal supports direct communication capabilities.

5. The terminal according to claim 4, wherein: If the direct communication response message indicates that the second terminal accepts the request of the terminal, the direct communication response message includes the QoS parameters accepted by the second terminal.

6. The terminal according to claim 4, wherein: The processor is further configured to: Sending a radio resource control request message to an access network function entity through the transceiver, where the radio resource control request message is used to request radio resources required for a direct communication service, wherein the radio resource control request message carries the direct communication QoS parameter; Receiving, by the transceiver, a radio resource control response message returned from the access network function entity, wherein the radio resource control response message includes radio resources determined by the access network function entity according to the direct communication QoS parameter; The wireless resources carried in the wireless resource control response message are used to perform a direct connection communication service.

7. A terminal, characterized in that: The terminal is a first terminal, including: A receiving unit, configured to receive a non-access layer message sent by an AMF entity, where the non-access layer message includes a direct communication quality of service QoS rule; the first terminal determines a direct communication QoS parameter according to the direct communication QoS rule carried by the non-access layer message; a sending unit, configured to send a direct communication request message to the second terminal, wherein the request message carries the direct communication QoS parameter; The receiving unit is further configured to receive a direct communication response message determined by the second terminal according to the direct communication QoS parameter, wherein the direct communication response message is used to instruct the second terminal to accept or reject the request of the terminal; an establishing unit, configured to establish a direct communication connection with the second terminal according to the direct communication response message if the direct communication response message indicates that the second terminal accepts the request of the terminal; The sending unit is also used to send a non-access layer request message to the AMF entity before receiving a non-access layer message sent by the access control and mobility management function AMF entity, wherein the request message includes information that the first terminal requests direct communication QoS parameters and / or information that the first terminal supports direct communication capabilities.

8. A computer storage medium storing a computer program, characterized in that: When the computer program is executed by a processor, the method according to any one of claims 1 to 3 is implemented.

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