WO2021003617A1 - 数据传输方法、装置和终端 - Google Patents

数据传输方法、装置和终端 Download PDF

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Publication number
WO2021003617A1
WO2021003617A1 PCT/CN2019/094935 CN2019094935W WO2021003617A1 WO 2021003617 A1 WO2021003617 A1 WO 2021003617A1 CN 2019094935 W CN2019094935 W CN 2019094935W WO 2021003617 A1 WO2021003617 A1 WO 2021003617A1
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Prior art keywords
module
qos flow
instruction
qos
management
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PCT/CN2019/094935
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English (en)
French (fr)
Inventor
杨皓睿
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Oppo广东移动通信有限公司
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Application filed by Oppo广东移动通信有限公司 filed Critical Oppo广东移动通信有限公司
Priority to PCT/CN2019/094935 priority Critical patent/WO2021003617A1/zh
Priority to CN201980090345.1A priority patent/CN113348715B/zh
Publication of WO2021003617A1 publication Critical patent/WO2021003617A1/zh

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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W72/00Local resource management
    • H04W72/50Allocation or scheduling criteria for wireless resources
    • H04W72/54Allocation or scheduling criteria for wireless resources based on quality criteria
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W76/00Connection management
    • H04W76/10Connection setup

Definitions

  • This application relates to the field of communication technology, and in particular to a data transmission method, device and terminal.
  • Device-to-device (D2D) communication technology refers to a technology that enables direct communication between user equipment (User Equipment, UE) and user equipment.
  • the D2D layer in the UE is configured with parameters that the UE can use for direct communication.
  • the access layer (Access Stratum, AS layer) in the UE is used to allocate data radio bearers for service data and transmit service data. It is data for direct communication between UE and UE.
  • the embodiments of the present application provide a data transmission method, device, and terminal, which can be used to solve problems existing in related technologies.
  • the technical solution is as follows:
  • a data transmission method is provided, the method is applied to a data transmission device, the device includes a D2D layer and an AS layer, the D2D layer includes a first module and a second module, and the AS layer includes a third module.
  • the method includes:
  • the first module manages the quality of service (Quality of Service, QoS) flow, and sends a management instruction to the third module;
  • QoS Quality of Service
  • the third module manages the resources corresponding to the QoS flow according to the management instruction, and sends a management completion instruction to the second module;
  • the second module receives the management completion instruction.
  • a data transmission device in another aspect, includes: a device-to-device D2D layer and an AS layer, the D2D layer includes a first module and a second module, and the AS layer includes a third module,
  • the first module is used to manage the quality of service QoS flow and send management instructions to the third module;
  • the third module is configured to manage resources corresponding to the QoS flow according to the management instruction, and send a management completion instruction to the second module;
  • the second module is used to receive the management completion instruction.
  • the first module is configured to establish a QoS flow and send a first establishment instruction to the third module;
  • the third module is configured to establish a resource corresponding to the QoS flow according to the first establishment instruction, and send a first establishment completion instruction to the second module;
  • the second module is configured to receive the first establishment completion instruction.
  • a terminal in another aspect, includes a processor and a memory, the memory stores at least one instruction, and the at least one instruction is used to be executed by the processor to implement the above-mentioned data transmission method.
  • a computer-readable storage medium stores at least one instruction, and the at least one instruction is configured to be executed by a processor to implement the above-mentioned data transmission method.
  • the third module of the AS layer manages the resources corresponding to the QoS flow and sends the management completion instruction to the second module of the D2D layer, so that the second module can learn the management status of the resources corresponding to the QoS flow in the AS layer in time, which is convenient
  • the direct communication between the UE and the UE is better based on the QoS flow and the resources corresponding to the QoS flow, realizing a data transmission method between the D2D layer and the AS layer, and because of the management of the third module
  • the resource is established based on the QoS flow, so that the data transmission mode can meet the QoS corresponding to the service data.
  • FIG. 1 is a schematic diagram of a non-roaming 5G system architecture provided by an embodiment of the present application
  • FIG. 2 is a schematic diagram of a data transmission device provided by an embodiment of the present application.
  • FIG. 3 is a flowchart of a data transmission method provided by an embodiment of the present application.
  • FIG. 4 is a flowchart of another data transmission method provided by an embodiment of the present application.
  • FIG. 5 is a schematic diagram of another data transmission device provided by an embodiment of the present application.
  • FIG. 6 is a flowchart of yet another data transmission method provided by an embodiment of the present application.
  • FIG. 7 is a flowchart of yet another data transmission method provided by an embodiment of the present application.
  • Fig. 8 is a block diagram of a QoS model provided by an embodiment of the present application.
  • FIG. 9 is a structural block diagram of a user equipment provided by an embodiment of the present application.
  • the technology for direct communication between terminals is called D2D technology, which can be implemented by calling the PC5 interface.
  • the terminal may be a UE, and the following embodiments of this application all take the terminal as a UE as an example for description.
  • the core network and the application server can configure the parameters required by the UE for D2D transmission, and the process of configuring the parameters can be implemented through the D2D layer (also referred to as D2D layer) in the UE.
  • D2D layer also referred to as D2D layer
  • the service data can be a data packet or a request sent by an upper layer.
  • the embodiment of the present application provides a data transmission method, which can solve the problems existing in related technologies.
  • FIG. 1 is a schematic diagram of a non-roaming 5G system architecture (Non-roaming 5G system architecture) provided by an embodiment of the application.
  • the system architecture can be applied to a vehicle to everything (V2X) service using D2D technology.
  • V2X vehicle to everything
  • the system architecture includes a data network (Data network), which is equipped with V2X application servers (Application Server) required for V2X services; the system architecture also includes a 5G core network.
  • the network functions of the 5G core network include: unified data management (Unified Data Management, UDM), Policy Control Function (PCF), Network Exposure Function (NEF), Application Function (AF), Unified Data Repository (UDR), Access and Mobility Management Function (AMF), Session Management Function (SMF), and User Plane Function (UPF);
  • the system architecture also includes wireless access network (New Generation-Radio Access Network, NG-RAN) and 4 user equipments (ie, user equipment 1 to user equipment 4), where each user equipment is provided with a V2X application (Application).
  • UDM Unified Data Management
  • PCF Policy Control Function
  • NEF Network Exposure Function
  • AF Application Function
  • UDR Unified Data Repository
  • AMF Access and Mobility Management Function
  • SMF Session Management Function
  • UPF User Plane Function
  • the user plane functions in the data network and the 5G core network are connected through the N6 reference point, and the V2X application server in the data network and the V2X application are connected through the V1 reference point; the wireless access network is connected with the 5G core network
  • the access and mobility management functions and user plane functions in the connection, the wireless access network is connected to user equipment 1 and user equipment 5 through the Uu reference point; multiple user equipment is connected through the PC5 reference point, and multiple V2X applications They are connected through the V5 reference point.
  • two adjacent user equipments can communicate directly through the PC5 reference point, and each user equipment is provided with a D2D layer.
  • the V2X application server communicates with the D2D layer in each user equipment, and configures the parameters required for direct communication for the user equipment.
  • FIG. 2 shows a block diagram of a data transmission device 20 provided by an embodiment of the present application.
  • the device may include a D2D layer and an AS layer.
  • the D2D layer includes a first module 201 and a second module 202
  • the AS layer includes a third module 203. .
  • the D2D layer is used to configure parameters required for direct communication between UEs
  • the AS layer is used to allocate resources and transmit service data for direct communication.
  • the first module 201 is used to manage the quality of service QoS flow and send management instructions to the third module 203.
  • the third module 203 is configured to manage the resources corresponding to the QoS flow according to the management instruction, and send a management completion instruction to the second module 202, and the second module 202 is configured to receive the management completion instruction.
  • the second module 202 can control the QoS flow according to the management completion instruction.
  • the D2D layer includes two parts: one part is used for control data transmission, and this part may include the second module 202; the other part is used for control signaling (this signaling is also called PC5 signaling, That is, PC5-Signalling) transmission, this part may include the first module 201.
  • the first module 201 may be an SM (Session Management) module or SM sub-protocol layer, and the second module 202 may be a Quality of Service Flow Control (QFC, also called QoS flow).
  • QFC Quality of Service Flow Control
  • Control Radio Resource Control
  • RRC Radio Resource Control
  • the SM module in the D2D layer may include multiple SM entities.
  • the transmission form includes: broadcast (broadcast), multicast (multicast) and unicast (unicast), correspondingly, the SM module can include one or more broadcast SM entities for managing broadcasts, one or more for managing A multicast SM entity for multicast, or one or more unicast SM entities for managing unicast.
  • the broadcast SM entity can have a one-to-one correspondence with the service
  • the multicast SM entity can have a one-to-one correspondence with a group
  • the unicast SM entity can have a one-to-one correspondence with a unicast link (link).
  • the user equipment can implement the broadcasting of the service data by executing the method provided by the broadcasting SM entity corresponding to the service of the service data in the SM module.
  • the AS layer also includes a Service Data Adaption Protocol (SDAP) module (not shown in Figure 2), and the SDAP is used to map the QoS flow to the data radio bearer in the resource corresponding to the QoS flow (Data radio Bearer, DRB).
  • SDAP Service Data Adaption Protocol
  • FIG. 3 shows a flowchart of a data transmission method provided by an embodiment of the present application. The method may be applied to the data transmission device 20 shown in FIG. 2 above. The method includes:
  • Step 301 The first module manages the quality of service QoS flow, and sends a management instruction to the third module.
  • Step 302 The third module manages the resources corresponding to the QoS flow according to the management instruction, and sends a management completion instruction to the second module.
  • the management instruction includes a first establishment instruction to establish a QoS flow, a modification instruction to modify a QoS flow, and a release instruction to release a QoS flow.
  • Step 303 The second module receives the management completion instruction.
  • the data transmission method manages the resources corresponding to the QoS flow through the third module of the AS layer and sends the management completion instruction to the second module of the D2D layer, so that the second module can learn in time
  • the management of the resources corresponding to the QoS flow in the AS layer facilitates direct communication between the UE and the UE based on the QoS flow and the resources corresponding to the QoS flow, realizing a D2D layer and the AS layer
  • the data transmission mode of the data and because the resources managed by the third module are established based on the QoS flow, the data transmission mode can meet the QoS corresponding to the service data.
  • the first module managing the QoS flow includes the first module establishing the QoS flow.
  • FIG. 4 shows a flowchart of a data transmission method provided by an embodiment of the present application. The method can also be applied to the data transmission device 20 shown in FIG. 2 above. The method includes:
  • Step 401 The first module establishes a QoS flow, and sends a first establishment instruction to the third module.
  • the first module may establish a QoS flow according to the service requirements corresponding to the service data, and the service data may be the service data currently arriving at the first module, or the default service data (that is, no service data has arrived currently).
  • the process of establishing a QoS flow by the first module may include the first module establishing a QoS flow corresponding to the QoS rules according to QoS rules (QoS rules).
  • QoS rules QoS rules
  • the first module can obtain multiple QoS rules from the network side, NAS layer (Non Access Stratum), mobile phone memory, SIM (Subscriber Identification Module) card, or application layer through the Uu interface.
  • QoS rules are used to associate service data (ie, uplink data) to corresponding QoS flows, and each QoS flow can correspond to one or more QoS rules.
  • Each QoS rule may include one or more correspondences, and the correspondence may be: a correspondence between a packet filter and a QoS parameter, or a correspondence between a QoS requirement and a QoS parameter, etc.
  • the first module stores all the acquired QoS rules in a QoS rule table.
  • the first module to establish the QoS flow corresponding to the QoS rule according to the QoS rule can include the following two cases: In the first case, the first module establishes the corresponding QoS flow for all QoS rules in the QoS rule table, for example, QoS rules All QoS rules included in the table are QoS rule 1, QoS rule 2, QoS rule 3 and QoS rule 4.
  • QoS rule 1 and QoS rule 2 correspond to QoS flow 1, so QoS rule 1 and QoS rule 2 can be used Establish QoS flow 1, QoS rule 3 and QoS rule 4 to establish QoS flow 2 and QoS flow 3 respectively.
  • the first module establishes a corresponding QoS flow with part of the QoS rules in the QoS rule table.
  • all QoS rules included in the QoS rule table are QoS rule 1, QoS rule 2, QoS rule 3, and QoS rule 4. Select QoS rule 2 and QoS rule 3 to establish QoS flow 1 and QoS flow 2, respectively.
  • the first module can determine the part of the QoS rule corresponding to the service requirement in the QoS rule table according to the service requirement of the service data arriving at the first module, and then establish the corresponding QoS flow for the part of the QoS rule .
  • Each QoS flow has a PC5 QoS Flow ID (PC5 QoS Flow ID, PFI), and each PFI is used to identify a QoS flow.
  • PC5 QoS Flow ID, PFI PC5 QoS Flow ID
  • each QoS flow can be assigned a PFI.
  • the first module can allocate a PFI for each QoS flow after establishing all QoS rules in the QoS rule table, which corresponds to the above The first case; or, the first module may allocate a PFI for each QoS flow after establishing the QoS flow corresponding to some QoS rules in the QoS rule table, which corresponds to the above second case.
  • the first module may allocate a PFI to some of the QoS flows after establishing QoS flows corresponding to all QoS rules in the QoS rule table, or the first module may set up QoS After the QoS flows corresponding to part of the QoS rules in the rule table are selected, part of the QoS flows are selected to allocate a PFI, etc., which is not limited in the embodiment of the present application.
  • QoS parameters are used to describe QoS flows.
  • QoS parameters may include a quality of service index (PC5 QoS Index, PC5 PQI) and a minimum guaranteed rate (Guaraateed Bit Rate, GBR), etc.
  • PC5 QoS Index PC5 PQI
  • GBR Guaranteeed Bit Rate
  • QoS parameters can be obtained in multiple ways: in one way, QoS parameters can be obtained from QoS rules, that is, QoS rules can include QoS parameters, for example, according to QoS rules, packet filtering and QoS parameters correspond to Relationship, obtain QoS parameters corresponding to packet filtering, or obtain QoS parameters corresponding to QoS requirements according to the corresponding relationship between QoS requirements and QoS parameters in QoS rules; in another obtaining method, the first module can be based on business The data obtains the pre-authorized QoS parameters corresponding to the service data.
  • the management instruction is a first establishment instruction, and the first establishment instruction may include PFI, QoS parameters, and cause.
  • the cause value is determined according to the service requirements of the current service data, and the cause value may include at least one of the following: signaling trigger, data trigger, public safety service, and high priority service.
  • the first module sends the PFI to the second module after allocating the PFI for the QoS flow, and sends the PFI at the same time. It indicates that the resources of the AS layer are not currently established.
  • Step 402 The third module establishes the resource corresponding to the QoS flow according to the first establishment instruction, and sends the first establishment completion instruction to the second module.
  • the resources corresponding to the QoS flow include: DRB corresponding to the QoS, configuration parameters corresponding to the QoS, and so on.
  • the third module may determine the time to establish the resource corresponding to the QoS flow according to the cause value. For example, if the cause value is a data trigger, a public safety service or a high-priority service, the third module can immediately establish the resource corresponding to the QoS flow and send the first establishment completion instruction to the second module; when the cause value is signaling When triggered, the third module can decide whether to immediately establish the resource corresponding to the QoS flow according to the preset condition.
  • the cause value is a data trigger, a public safety service or a high-priority service
  • the preset condition may be that the current load level of the third module is greater than the first threshold, that is, when the current load level is greater than the first threshold, the third module immediately establishes the corresponding QoS flow Otherwise, the third module can establish the resource corresponding to the Qos flow after a preset period of time, or the third module monitors the current load level, and when it determines that the current load level is greater than the first threshold, establishes the Qos flow corresponding resource of.
  • the preset condition may be that the current number of resources (such as data radio bearers) of the third module is greater than the second threshold (that is, to ensure that the current resources are sufficient), and the number of services currently being performed by the third module If the number is less than the third threshold and the current signal quality of the third module is greater than the intensity threshold, the third module determines whether to establish the resource corresponding to the QOS stream according to the multiple preset conditions. You can refer to the foregoing optional implementation method. The application embodiments are not repeated here.
  • the first establishment completion instruction may also include the PFI corresponding to the QoS flow.
  • Step 403 The second module receives the first establishment completion instruction.
  • the second module can learn that the resource corresponding to the QoS flow in the AS layer has been established according to the first establishment completion instruction.
  • the SDAP in the AS layer can map the QoS flow to the DRB in the resource corresponding to the QoS flow to transmit service data for direct communication.
  • Multiple QoS flows can correspond to one DRB, or one QoS flow corresponds to one DRB.
  • the third module may establish the resource corresponding to the QoS flow according to the first establishment instruction, and send the first establishment completion instruction to the first module, and then the first module The first establishment completion instruction is forwarded to the second module, and then the first establishment completion instruction is received by the second module.
  • the third module establishes the resource corresponding to the QoS flow according to the first establishment completion instruction
  • the established resource sometimes does not meet the requirements of the QoS flow.
  • the data transmission method provided in the embodiment of the present application may further include the following steps:
  • Step 404 When the third module determines that the resources corresponding to the QoS flow do not meet the requirements of the QoS flow, send a first notification to the first module.
  • the requirements of the QoS flow may include the current signal quality, the minimum rate that needs to be guaranteed, the transmission reliability that needs to be guaranteed, the delay that needs to be guaranteed, and so on.
  • the third module may send a first notification to the first module.
  • the first module can take different response methods according to the first notification. In step 405 and step 406, two response methods taken by the first module according to the first notification are described respectively.
  • Step 405 The first module releases the QoS flow according to the first notification.
  • the first module directly releases the QoS flow to stop transmitting service data.
  • Step 406 The first module sends a monitoring instruction to the third module according to the first notification.
  • the monitoring instruction sent by the first module to the third module can be used to enable the third module to monitor whether the resources corresponding to the QoS flow can meet the requirements of the QoS flow.
  • step 406 may include the following two steps:
  • Step S1 The third module sends a second notification to the first module when the third module determines that the resource corresponding to the QoS flow meets the requirements of the QoS flow according to the monitoring instruction.
  • Step S2. The first module manages the QoS flow according to the second notification.
  • the first module managing the QoS flow according to the second notification may include the first module releasing the QoS flow, modifying the QoS flow, or establishing a new QoS flow according to the second notification.
  • both the first notification and the second notification may include the PFI corresponding to the QoS flow.
  • step 405 and step 406 can be executed alternatively.
  • FIG. 5 shows a block diagram of another data transmission device 20 provided by an embodiment of the present application.
  • the D2D layer in the device may further include a fourth module 304, which may belong to the D2D layer for control signaling transmission
  • the fourth module 304 is used to establish a connection between multiple UEs.
  • the fourth module may be a mobility management (Mobility Management, MM) module, or called the MM sub-protocol layer.
  • MM Mobility Management
  • the data transmission method may further include the following steps:
  • Step 407 The first module sends a third notification to the fourth module according to the first notification, and the third notification is used to indicate that the resource corresponding to the QoS flow does not meet the requirements of the QoS flow.
  • the first module may also directly forward the first notification sent by the third module to the fourth module.
  • Step 408 The fourth module releases or modifies the connection corresponding to the QoS flow according to the third notification.
  • the fourth module Since the fourth module is used to establish connections between multiple UEs, the fourth module can release or modify the connections between the multiple UEs corresponding to the QoS flow according to the third notification.
  • the process of modifying the connection corresponding to the QoS flow may be a process of modifying the QoS parameters used to describe the QoS flow.
  • the fourth module can spontaneously modify the connection corresponding to the QoS flow, and There is no need to follow the third notification sent by the first module to the fourth module.
  • the resource corresponding to the QoS flow is established through the third module of the AS layer and the first establishment completion instruction is sent to the second module of the D2D layer, so that the second module can Know the establishment of resources corresponding to the QoS flow in the AS layer in time, so that the UE and the UE can better communicate directly based on the QoS flow and the resources corresponding to the QoS flow, and realize a D2D layer and AS layer
  • FIG. 6 shows a flowchart of a data transmission method provided by an embodiment of the present application. The method may be applied to the data transmission device 20 shown in FIG. 2 above. The method includes:
  • Step 501 The first module modifies the QoS flow, and sends a modification instruction to the third module.
  • step 501 the related process of the first module modifying the QoS flow and sending the modification instruction to the third module can refer to the related process of the above step 401, the first module establishing the QoS flow and sending the first establishment instruction to the third module.
  • the management instruction is a modification instruction
  • the modification instruction includes PFI, QoS parameters, and cause values.
  • the cause value can refer to the above step 401, which will not be repeated in this embodiment of the application.
  • Step 502 The third module modifies the resource corresponding to the QoS flow according to the modification instruction, and sends a modification completion instruction to the second module.
  • step 502 the third module modifies the resource corresponding to the QoS flow according to the modification instruction, and sends the modification completion instruction to the second module.
  • the third module establishes the QoS flow correspondence according to the first setup instruction. The related process of sending the first establishment completion instruction to the second module is not repeated in the embodiment of the present application.
  • Step 503 The second module receives the modification completion instruction.
  • step 503 for the second module to receive the modification completion instruction, reference may be made to the related process in step 403, which will not be repeated in this embodiment of the application.
  • the data transmission method provided by the embodiment of the present application further includes the following steps:
  • Step 504 When the third module determines that the resources corresponding to the QoS flow do not meet the requirements of the QoS flow, send a first notification to the first module.
  • Step 505 The first module releases the QoS flow according to the first notification.
  • Step 506 The first module sends a monitoring instruction to the third module according to the first notification.
  • the data transmission method may further include the following steps:
  • Step 507 The first module sends a third notification to the fourth module according to the first notification, where the third notification is used to indicate that the resource corresponding to the QoS flow does not meet the requirements of the QoS flow.
  • Step 508 The fourth module releases or modifies the connection corresponding to the QoS flow according to the third notification.
  • the resource corresponding to the QoS flow is modified by the third module of the AS layer and the modification completion instruction is sent to the second module, so that the second module can learn about the AS layer in time
  • the modification of the resources corresponding to the QoS flow facilitates direct communication between the UE and the UE based on the QoS flow and the resources corresponding to the QoS flow, and realizes a data exchange between the D2D layer and the AS layer.
  • Transmission mode and because the resources modified by the third module are modified based on the QoS flow, the data transmission mode can meet the QoS corresponding to the service data.
  • FIG. 7 shows a flowchart of a data transmission method provided by an embodiment of the present application. The method may be applied to the data transmission device 20 shown in FIG. 2 above, and the method includes:
  • Step 601 The first module releases the QoS flow, and sends a release instruction to the third module.
  • the first module releases the QoS flow according to the service requirements corresponding to the current service data, and sends a release instruction to the third module.
  • a release instruction For the related process, refer to the above step 401 to establish the QoS flow in the first module and send the first establishment instruction to the third module. The related process of this application will not be repeated here.
  • the management instruction includes a release instruction
  • the release instruction may include the PFI and the cause value.
  • the cause value includes at least one of the following: service suspension, leaving the service authorization area, poor signal quality, QoS authorization withdrawal, and service authorization withdrawal.
  • Step 602 The third module releases the resource corresponding to the QoS flow according to the release instruction, and sends a release completion instruction to the second module.
  • step 602 the third module releases the resources corresponding to the QoS flow according to the release instruction, and sends the release completion instruction to the second module.
  • the third module establishes the QoS flow correspondence according to the first setup instruction. The related process of sending the first establishment completion instruction to the second module is not repeated in the embodiment of the present application.
  • Step 603 The second module receives the release completion instruction.
  • the second module may refer to the related process in step 403 for receiving the release completion instruction, which will not be repeated in the embodiment of the present application.
  • the second module learns that the resources corresponding to the QoS flow in the AS layer have been released. In this case, the current service data of the first module can no longer be transmitted. If you want to continue To transmit the service data, as another optional implementation manner, the first module may establish a new QoS flow for transmitting the service data. Then, the following steps 604 to 606 can be executed continuously.
  • Step 604 The first module establishes a new QoS flow, and sends a second establishment instruction to the third module.
  • Step 605 The third module establishes the resource corresponding to the new QoS flow according to the second establishment instruction, and sends a second establishment completion instruction to the second module.
  • Step 606 The second module receives a second establishment completion instruction.
  • the data transmission method establishes the resources corresponding to the QoS flow through the third module of the AS layer and sends the release completion instruction to the second module of the D2D layer, so that the second module can learn in time
  • the data transmission mode can meet the QoS corresponding to the service data, effectively realizing a data transmission mode.
  • services that use D2D technology include V2X, Network Controlled Interactive Services (NCIS), and Public Safety (Public Safety).
  • the D2D layer used to process V2X services may include the V2X layer
  • the D2D layer used to process NCIS services may include the NCIS layer
  • the D2D layer used to process Public Safety services may include the Public Safety layer.
  • FIG. 8 shows a block diagram of a QoS model provided by an embodiment of the present application.
  • the data transmission method described in the foregoing embodiment will be further described below in conjunction with the QoS model.
  • the embodiment of the present application will continue to use the V2X service as an example. .
  • the V2X layer When performing a V2X service, the V2X layer receives a V2X data packet for performing a V2X service.
  • the PC5 QoS rule is set in the V2X layer.
  • the first module (not shown in the figure) in the V2X layer establishes the PC5 QoS flow corresponding to the PC5 QoS rule based on the received V2X data packet according to the PC5 QoS rule.
  • the PC5 QoS The stream includes V2X packets and QFI.
  • the first module sends a first setup instruction to RRC (in this application, the first module is used as an example to establish a QoS flow).
  • RRC establishes the resource corresponding to the PC5 QoS flow and sends it to the second module ( Figure Not shown in) Send the first establishment completion instruction.
  • the second module After the second module receives the first establishment completion instruction, it learns that the resources corresponding to the PC5 QoS flow in the current AS layer have been established. Based on this, the V2X layer sends the data of the PC5 QoS flow to the SDAP, and the SDAP sends the PC5 QoS flow. The flow data is mapped to the corresponding data radio bearer in the established resource, and the corresponding processing flow is performed.
  • the processing flow includes the transmission of the data packet from the Packet Data Convergence Protocol (PDCP) to the radio link control ( Radio Link Control (RLC) and Medium Access Control (Medium Access Control, MAC), and finally sent on the physical layer (Physical Layer, PHY).
  • PDCP Packet Data Convergence Protocol
  • RLC Radio Link Control
  • MAC Medium Access Control
  • the V2X layer sends the signaling corresponding to the data to the RRC, and the RRC establishes the signaling radio bearer corresponding to the signaling, and performs the corresponding processing flow.
  • the processing flow includes transmitting the signaling from PDCP to RLC and MAC, and finally The process of sending on the PHY. In this way, the transmission of V2X data packets at the V2X layer and the AS layer is realized.
  • the first module 201 is configured to establish a QoS flow and send a first setup instruction to the third module 203; the third module 203 is configured to According to the first establishment instruction, the resource corresponding to the QoS flow is established, and a first establishment completion instruction is sent to the second module 202; the second module 202 is configured to receive the first establishment completion instruction.
  • the first establishment instruction includes a quality of service flow identifier PFI, a QoS parameter, and a cause value.
  • the first module 201 is configured to modify the QoS flow and send a modification instruction to the third module;
  • the third module 203 is configured to modify the corresponding QoS flow according to the modification instruction Resource, and send a modification completion instruction to the second module;
  • the second module 202 is configured to receive the modification completion instruction.
  • the modification instruction includes PFI, QoS parameters, and cause values.
  • the cause value includes at least one of the following: signaling trigger; data trigger; public safety service; high priority service.
  • the third module 203 is further configured to send a first notification to the first module when the third module determines that the resources corresponding to the QoS flow do not meet the requirements of the QoS flow;
  • the first module is further configured to release the QoS flow according to the first notification,
  • the first module is further configured to send a monitoring instruction to the third module according to the first notification.
  • the first module 201 is further configured to send a monitoring instruction to the third module 203 according to the first notification
  • the third module 203 is further configured to send the first module 201 to the first module 201 when the third module 203 determines that the resource corresponding to the QoS flow meets the requirements of the QoS flow according to the monitoring instruction Two notification; the first module 201 is also used to manage the QoS flow according to the second notification.
  • the D2D layer further includes a fourth module 204, and the fourth module 204 is configured to establish a connection between multiple user equipment UEs.
  • the first module 201 is further configured to send a third notification to the fourth module 204 according to the first notification, and the third notification is used to indicate that the resource corresponding to the QoS flow is not satisfied
  • the requirements of the QoS flow; the fourth module 204 is also used to release or modify the connection corresponding to the QoS flow according to the third notification.
  • the first module 201 is configured to release the QoS flow and send a release instruction to the third module 203;
  • the third module 203 is configured to release the resources corresponding to the QoS flow according to the release instruction, and send a release completion instruction to the second module 202;
  • the second module 202 is configured to receive the release completion instruction.
  • the first module 201 is further configured to establish a new QoS flow, and send a second establishment instruction to the third module 203;
  • the third module 203 is further configured to establish a resource corresponding to the new QoS flow according to the second establishment instruction, and send a second establishment completion instruction to the second module 202;
  • the second module 202 is also used to receive the second establishment completion instruction.
  • the release instruction includes the PFI and the cause value.
  • the reason value includes at least one of the following: service stop; leaving the service authorization area; poor signal quality; QoS authorization withdrawal; service authorization withdrawal.
  • the first module 201 is configured to establish a QoS flow corresponding to the QoS rule according to the QoS rule; the QoS flow has a PFI, and the QoS rule includes QoS parameters, or the QoS rule corresponds to QoS parameters .
  • the data transmission device manages the resources corresponding to the QoS flow through the third module of the AS layer and sends the management completion instruction to the second module of the D2D layer, so that the second module can learn in time
  • the management of the resources corresponding to the QoS flow in the AS layer facilitates direct communication between the UE and the UE based on the QoS flow and the resources corresponding to the QoS flow, realizing a D2D layer and the AS layer
  • the data transmission mode of the data and because the resources managed by the third module are established based on the QoS flow, the data transmission mode can meet the QoS corresponding to the service data.
  • An embodiment of the present application provides a user equipment, and the user equipment includes the data transmission apparatus shown in FIG. 2 or FIG. 5 above.
  • FIG. 9 shows a structural block diagram of a user equipment provided by an embodiment of the present application.
  • the user equipment includes a processor 91, a receiver 92, a transmitter 93, a memory 94, and a bus 95.
  • the processor 91 includes one or more processing cores, and the processor 91 executes various functional applications and information processing by running software programs and modules.
  • the receiver 92 and the transmitter 93 can be implemented as a communication component.
  • the communication component can be a communication chip.
  • the communication chip can include a receiving module, a transmitting module, a modem module, etc., which are used to modulate and/or decode information. Tune, and receive or send the information through wireless signals.
  • the memory 94 is connected to the processor 91 through a bus 95.
  • the memory 94 may be used to store at least one instruction, and the processor 91 is used to execute the at least one instruction to implement each step in the foregoing method embodiment.
  • the memory 94 can be implemented by any type of volatile or non-volatile storage device or a combination thereof, such as static anytime access memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable Except for programmable read only memory (EPROM), programmable read only memory (PROM), read only memory (ROM), magnetic memory, flash memory, magnetic disks or optical disks.
  • SRAM static anytime access memory
  • EEPROM electrically erasable programmable read-only memory
  • EPROM erasable except for programmable read only memory
  • PROM programmable read only memory
  • ROM read only memory
  • magnetic memory flash memory
  • flash memory magnetic disks or optical disks.

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Abstract

本申请公开了一种数据传输方法、装置和终端,属于通信技术领域。该方法通过第三模块管理QoS流对应的资源并将管理完成指令发送至第二模块,使得第二模块能够及时获知AS层中与该QoS流对应的资源的管理情况,便于UE与UE之间更好地基于该QoS流以及该QoS流对应的资源进行直连通信,实现了一种设备对设备层以及接入层之间的数据的传输方式,并且,由于第三模块所管理的资源是基于QoS流建立的,使得该数据的传输方式能够满足业务数据对应的QoS。

Description

数据传输方法、装置和终端 技术领域
本申请涉及通信技术领域,特别涉及一种数据传输方法、装置和终端。
背景技术
设备对设备(Device to device,D2D)通信技术是指用户设备(User Equipment,UE)与用户设备之间能够直连通信的技术。UE中的D2D层配置有该UE能够用于直连通信所需的参数,UE中的接入层(Access Stratum,AS层)用于为业务数据分配数据无线承载并传输业务数据,该业务数据为供UE与UE之间进行直连通信的数据。
在第五代移动通信技术(5th-Generation,5G)中,并没有明确当UE需要传输用于直连通信的业务数据时,D2D层以及AS层是如何传输该业务数据的。因此,亟需一种数据传输的方法,能够明确UE中D2D层以及AS层之间业务数据的传输方式。
发明内容
本申请实施例提供了一种数据传输方法、装置和终端,可以用于解决相关技术中存在的问题。所述技术方案如下:
一方面,提供了一种数据传输方法,所述方法应用于数据传输装置,所述装置包括D2D层以及AS层,所述D2D层包括第一模块以及第二模块,所述AS层包括第三模块,所述方法包括:
所述第一模块管理服务质量(Quality of Service,QoS)流,并向所述第三模块发送管理指令;
所述第三模块根据所述管理指令,管理所述QoS流对应的资源,并向所述第二模块发送管理完成指令;
所述第二模块接收所述管理完成指令。
另一方面,提供了一种数据传输装置,所述装置包括:设备对设备D2D层以及AS层,所述D2D层包括第一模块以及第二模块,所述AS层包括第三模块,
所述第一模块,用于管理服务质量QoS流,并向所述第三模块发送管理指令;
所述第三模块,用于根据所述管理指令,管理所述QoS流对应的资源,并向所述第二模块发送管理完成指令;
所述第二模块,用于接收所述管理完成指令。
可选的,所述第一模块,用于建立QoS流,并向所述第三模块发送第一建立指令;
所述第三模块,用于根据所述第一建立指令,建立所述QoS流对应的资源,并向所述第二模块发送第一建立完成指令;
所述第二模块,用于接收所述第一建立完成指令。
另一方面,提供了一种终端,所述终端包括处理器和存储器,所述存储器存储有至少一 条指令,所述至少一条指令用于被所述处理器执行以实现上述数据传输方法。
另一方面,提供了一种计算机可读存储介质,所述存储介质存储有至少一条指令,所述至少一条指令用于被处理器执行以实现上述数据传输方法。
本申请实施例提供的技术方案带来的有益效果至少包括:
通过AS层的第三模块管理QoS流对应的资源并将管理完成指令发送至D2D层的第二模块,使得该第二模块能够及时获知AS层中与该QoS流对应的资源的管理情况,便于UE与UE之间更好地基于该QoS流以及该QoS流对应的资源进行直连通信,实现了一种D2D层以及AS层之间的数据的传输方式,并且,由于第三模块所管理的资源是基于QoS流建立的,使得该数据的传输方式能够满足业务数据对应的QoS。
附图说明
为了更清楚地说明本申请实施例中的技术方案,下面将对实施例描述中所需要使用的附图作简单地介绍,显而易见地,下面描述中的附图仅仅是本申请的一些实施例,对于本领域普通技术人员来讲,在不付出创造性劳动的前提下,还可以根据这些附图获得其他的附图。
图1是本申请实施例提供一种非漫游5G系统构架的示意图;
图2是本申请实施例提供的一种数据传输装置的示意图;
图3是本申请实施例提供的一种数据传输方法的流程图;
图4是本申请实施例提供的另一种数据传输方法的流程图;
图5是本申请实施例提供的另一种数据传输装置的示意图;
图6是本申请实施例提供的又一种数据传输方法的流程图;
图7是本申请实施例提供的又一种数据传输方法的流程图;
图8是本申请实施例提供的一种QoS模型的框图;
图9是本申请实施例提供的一种用户设备的结构方框图。
具体实施方式
为使本申请的目的、技术方案和优点更加清楚,下面将结合附图对本申请实施方式作进一步地详细描述。
终端之间进行直连通信的技术叫做D2D技术,该D2D技术可以通过调用PC5接口实现。示例的,终端可以为UE,本申请以下实施例均以终端为UE为例进行说明。
核心网以及应用服务器能够为UE配置其进行D2D传输需要的参数,该配置参数的过程可以通过UE内D2D层(也称为D2D layer)实现。目前的5G中,没有明确当UE接收到用于直连通信的业务数据时,D2D层以及AS层是如何传输该业务数据的。其中,业务数据可以为数据包或者为上层发送的请求。本申请实施例提供了一种数据传输的方法,可以解决相关技术中存在的问题。
图1为本申请实施例提供的一种非漫游5G系统构架(Non-roaming 5G system architecture)的示意图,该系统构架可以应用于使用D2D技术的车联网(Vehicle to everything,V2X)业务。
该系统构架包括数据网络(Data network),该数据网络中设置有V2X业务所需的V2X 应用服务器(Application Server);该系统构架还包括5G核心网,5G核心网的网络功能包括:统一数据管理(Unified Data Management,UDM)、策略控制功能(Policy Control Function,PCF)、网络开放功能(Network Exposure Function,NEF)、应用功能(Application Function,AF)、统一数据存储(Unified Data Repository,UDR)、接入和移动性管理功能(Access and Mobility Management Function,AMF)、会话管理功能(Session Management Function,SMF)以及用户面功能(User Plane Function,UPF);该系统构架还包括无线接入网(New Generation-Radio Access Network,NG-RAN)以及4个用户设备(即用户设备1至用户设备4),其中,每个用户设备均设置有V2X应用(Application)。
该系统构架中,数据网络与5G核心网中的用户面功能通过N6参考点(reference point)连接,数据网络中的V2X应用服务器与V2X应用通过V1参考点连接;无线接入网与5G核心网中的接入和移动性管理功能以及用户面功能连接,无线接入网分别通过Uu参考点与用户设备1以及用户设备5连接;多个用户设备之间通过PC5参考点连接,多个V2X应用之间通过V5参考点连接。
其中,相邻的两个用户设备之间可以通过PC5参考点进行直连通信,每个用户设备中均设置有D2D层。V2X应用服务器与每个用户设备中的D2D层通信连接,为该用户设备配置直连通讯所需的参数。
图2示出了本申请实施例提供的一种数据传输装置20的框图,该装置可以包括D2D层以及AS层,D2D层包括第一模块201以及第二模块202,AS层包括第三模块203。
其中,D2D层用于配置UE之间进行直连通信所需的参数,AS层用于为直连通信的业务数据分配资源和传输该业务数据。第一模块201用于管理服务质量QoS流,并向第三模块203发送管理指令。第三模块203用于根据该管理指令,管理该QoS流对应的资源,并向第二模块202发送管理完成指令,第二模块202用于接收该管理完成指令。第二模块202可以根据该管理完成指令对QoS流进行控制。
在一种可选的实现方式中,D2D层包括两部分:一部分用于控制数据传输,该部分可以包括第二模块202;另一部分用于控制信令(该信令也称为PC5信令,即PC5-Signalling)传输,该部分可以包括第一模块201。示例的,第一模块201可以为SM(Session Management,会话管理)模块,或称为SM子协议层,第二模块202可以为服务质量流控制(Quality of Service Flow Control,QFC,也称QoS流控制)模块,第三模块203可以为无线资源控制(Radio Resource Control,RRC)。
其中,为了使D2D技术能够实现多种传输形式,D2D层中的SM模块可以包括多个SM实体(entity)。该传输形式包括:广播(broadcast)、组播(multicast)以及单播(unicast),则相应的,SM模块可以包括一个或多个用于管理广播的广播SM实体,一个或多个用于管理组播的组播SM实体,或者一个或多个用于管理单播的单播SM实体。其中,广播SM实体可以与业务一一对应,组播SM实体可以与组(group)一一对应,单播SM实体可以与单播链路(link)一一对应。以对业务数据进行广播传输为例,用户设备通过执行SM模块中与该业务数据的业务对应的广播SM实体提供的方法可以实现该业务数据的广播。
可选的,AS层还包括业务数据匹配协议(Service Data Adaption Protocol,SDAP)模块(图2中未示出),SDAP用于将QoS流映射至与该QoS流对应的资源中的数据无线承载(Data  radio Bearer,DRB)上。
图3示出了本申请实施例提供的一种数据传输方法的流程图,该方法可以应用于上述图2所示的数据传输装置20,该方法包括:
步骤301、第一模块管理服务质量QoS流,并向第三模块发送管理指令。
步骤302、第三模块根据该管理指令,管理QoS流对应的资源,并向第二模块发送管理完成指令。
其中,管理指令包括建立QoS流的第一建立指令、修改QoS流的修改指令以及释放QoS流的释放指令。
步骤303、第二模块接收管理完成指令。
综上所述,本申请实施例提供的数据传输方法,通过AS层的第三模块管理QoS流对应的资源并将管理完成指令发送至D2D层的第二模块,使得该第二模块能够及时获知AS层中与该QoS流对应的资源的管理情况,便于UE与UE之间更好地基于该QoS流以及该QoS流对应的资源进行直连通信,实现了一种D2D层以及AS层之间的数据的传输方式,并且,由于第三模块所管理的资源是基于QoS流建立的,使得该数据的传输方式能够满足业务数据对应的QoS。
针对上述三种管理指令,以下分别提供了三种数据传输方法。
第一种数据传输方法,第一模块管理QoS流包括第一模块建立QoS流。图4所示了本申请实施例提供的一种数据传输方法的流程图,该方法也可以应用于上述图2所示的数据传输装置20,该方法包括:
步骤401、第一模块建立QoS流,并向第三模块发送第一建立指令。
第一模块可以根据业务数据对应的业务需求建立QoS流,该业务数据可以是当前到达该第一模块的业务数据,或者为默认的业务数据(也即是当前并无业务数据到达)。
可选的,第一模块建立QoS流的过程可以包括第一模块根据QoS规则(QoS rules)建立与QoS规则对应的QoS流。
第一模块可以通过Uu接口从网络侧、NAS层(Non Access Stratum,非接入层)、手机内存、SIM(Subscriber Identification Module,用户身份识别模块)卡或应用层获取多个QoS规则。QoS规则用于将业务数据(即上行数据)关联到对应的QoS流上,每个QoS流可以对应一个或多个QoS规则。每个QoS规则可以包括一种或多种对应关系,该对应关系可以为:包过滤(packet filter)与QoS参数的对应关系,或者QoS需求与QoS参数的对应关系等。
可选的,第一模块将获取到的所有QoS规则存储于一个QoS规则表中。第一模块根据QoS规则建立QoS规则对应的QoS流可以包括以下两种情况:第一种情况中,第一模块将QoS规则表中的所有的QoS规则均建立对应的QoS流,例如,QoS规则表中包括的所有QoS规则为QoS规则1、QoS规则2、QoS规则3以及QoS规则4,其中,QoS规则1以及QoS规则2均对应QoS流1,则QoS规则1以及QoS规则2可以均用于建立QoS流1,QoS规则3以及QoS规则4分别建立QoS流2以及QoS流3。
第二种情况中,第一模块将QoS规则表中的部分QoS规则建立对应的QoS流。例如,QoS规则表中包括的所有QoS规则为QoS规则1、QoS规则2、QoS规则3以及QoS规则4, 选择其中的QoS规则2以及QoS规则3分别建立QoS流1以及QoS流2。在该第二种情况中,第一模块可以根据到达第一模块的业务数据的业务需求,确定QoS规则表中与该业务需求对应的部分QoS规则,再将该部分QoS规则建立对应的QoS流。
每个QoS流均具有一个PC5 QoS流标识(PC5 QoS Flow ID,PFI),每个PFI用于标识一个QoS流。为了便于对每个QoS流进行后续操作,每个QoS流可以均被分配一个PFI。针对上述两种根据QoS规则建立QoS规则对应的QoS流的情况,第一模块可以在建立QoS规则表中的所有QoS规则对应的QoS流之后,为该每个QoS流分配一个PFI,即对应上述第一种情况;或者,第一模块可以在建立QoS规则表中的部分QoS规则对应的QoS流之后,为该每个QoS流分配一个PFI,即对应上述第二种情况。当然,在其他可能的实现方式中,第一模块可以在建立QoS规则表中的所有QoS规则对应的QoS流之后,为其中的部分QoS流分别分配一个PFI,或者,第一模块可以在建立QoS规则表中的部分QoS规则对应的QoS流之后,再挑选其中的部分QoS流分别分配一个PFI等,本申请实施例对此不进行限制。
QoS参数用于描述QoS流,示例的,QoS参数可以包括服务质量索引(PC5 QoS Index,PC5PQI)以及最低保障速率(Guaraateed Bit Rate,GBR)等。
QoS参数可以有多种获取方式:在一种获取方式中,QoS参数可以从QoS规则中获取,也即是,QoS规则可以包括QoS参数,例如,根据QoS规则中,包过滤与QoS参数的对应关系,获取与包过滤对应的QoS参数,或者,根据QoS规则中,QoS需求与QoS参数的对应关系,获取与QoS需求对应的QoS参数;在另一种获取方式中,第一模块可以基于业务数据获取与该业务数据对应的预先授权的QoS参数。
其中,管理指令为第一建立指令,该第一建立指令可以包括PFI、QoS参数以及原因值(cause)。可选的,原因值为根据当前业务数据的业务需求确定,该原因值可以包括以下至少一种:信令触发、数据触发、公共安全业务以及高优先级业务。
可选的,为了便于第二模块确定其所接收到的管理完成指令所对应的QoS流,第一模块在为该QoS流分配PFI之后,将该PFI也发送至第二模块,并同时发送用于指示AS层的资源当前还未建立的指令。
步骤402、第三模块根据第一建立指令,建立该QoS流对应的资源,并向第二模块发送第一建立完成指令。
可选的,QoS流对应的资源包括:该QoS对应的DRB、该QoS对应的配置参数等。
当第一建立指令包括原因值时,第三模块可以根据原因值确定建立QoS流对应的资源的时机。示例的,如果原因值为数据触发、公共安全业务或者高优先级业务时,第三模块可以立即建立QoS流对应的资源,并向第二模块发送第一建立完成指令;当原因值为信令触发时,第三模块可以根据预设条件决定是否立即建立QoS流对应的资源。在一种可选的实现方式中,该预设条件可以为第三模块当前的负荷程度大于第一阈值,也即是,当前的负荷程度大于第一阈值时,第三模块立即建立QoS流对应的资源,否则,第三模块可以在预设时间段后再建立Qos流对应的资源,或者,第三模块监测当前的负荷程度,在确定当前的负荷程度大于第一阈值时,建立Qos流对应的资源。在其他可选的实现方式中,该预设条件可以为第三模块当前的资源(例如数据无线承载)数量大于第二阈值(即保证当前的资源充足)、第三模块当前正在进行的业务个数小于第三阈值以及第三模块当前的信号质量大于强度阈值等,第三模 块根据该多种预设条件决定是否建立QOS流对应的资源的过程可以参考前述一种可选的实现方式,本申请实施例在此不再赘述。
可选的,该第一建立完成指令中也可以包括该QoS流对应的PFI。
步骤403、第二模块接收第一建立完成指令。
第二模块可以根据该第一建立完成指令获悉AS层中,与该QoS流对应的资源已经建立完成。AS层中的SDAP可以将该QoS流映射至与该QoS流对应的资源中的DRB上,以传输用于直连通信的业务数据。多个QoS流可以对应一个DRB,或者一个QoS流对应一个DRB。
在其他可选的实现方式中,在步骤402中,第三模块可以根据第一建立指令,建立该QoS流对应的资源,并向第一模块发送第一建立完成指令,然后再由第一模块向第二模块转发该第一建立完成指令,然后由该第二模块接收该第一建立完成指令。
在上述步骤402之后,虽然第三模块根据该第一建立完成指令建立了该QoS流对应的资源,但是,该建立的资源有时并不满足该QoS流的需求。在该种情况下,即使第二模块接收到了第三模块发送的第一建立完成指令,AS层中的SDAP也难以将该QoS流映射至与该QoS流对应的资源中的DRB上。因此,本申请实施例提供的数据传输方法还可以包括如下步骤:
步骤404、当第三模块确定与该QoS流对应的资源不满足该QoS流的需求时,向第一模块发送第一通知。
可选的,该QoS流的需求可以包括当前的信号质量、需要保证的最低速率、需要保证的传输可靠性、需要保证的时延等。当第三模块确定与该QoS流对应的资源不满足该QoS流的需求时,第三模块可以向第一模块发送第一通知。第一模块可以根据该第一通知采取不同的应对方式。步骤405和步骤406中分别描述了第一模块根据该第一通知所采取的两种应对方式。
步骤405、第一模块根据第一通知,释放QoS流。
在第一种应对方式中,第一模块直接释放QoS流,以停止传输业务数据。
步骤406、第一模块根据第一通知,向第三模块发送监控指令。
在第二种应对方式中,第一模块据向第三模块发送的监控指令可以用于使第三模块监控该QoS流对应的资源是否能够满足该QoS流需求。
可选的,步骤406可以包括如下两步:
步骤S1、第三模块根据监控指令,当第三模块确定与该QoS流对应的资源满足QoS流的需求时,向第一模块发送第二通知。
步骤S2、第一模块根据第二通知管理QoS流。
第一模块根据第二通知管理QoS流可以包括第一模块根据第二通知释放该QoS流、修改该QoS流或者建立新的QoS流。
可选的,该第一通知和第二通知中均可以包括该QoS流对应的PFI。
需要说明的是,上述步骤405和步骤406可以择一执行。
图5示出了本申请实施例提供的另一种数据传输装置20的框图,该装置中的D2D层还可以包括第四模块304,第四模块304可以属于D2D层中用于控制信令传输的部分,第四模 块304用于建立多个UE之间的连接。第四模块可以为移动性管理(Mobility Management,MM)模块,或称为MM子协议层。
可选的,当数据传输装置中的D2D层还包括第四模块时,请继续参考图4,该数据传输方法还可以包括如下步骤:
步骤407、第一模块根据第一通知,向第四模块发送第三通知,该第三通知用于指示该QoS流对应的资源不满足QoS流的需求。
当然,在其他可选的实现方式中,第一模块也可以直接转发第三模块向其发送的第一通知至第四模块。
步骤408、第四模块根据第三通知,释放或者修改QoS流对应的连接。
由于第四模块用于建立多个UE之间的连接,因此,第四模块可以根据第三通知,释放或者修改该多个UE之间与QoS流对应的连接。
其中,修改QoS流对应的连接的过程可以为修改用于描述该QoS流的QoS参数的过程。当然,在其他可选的实现方式中,当第四模块接收到第一模块发送的某一QoS流对应的QFI和QoS参数之后,第四模块可以自发对该QoS流对应的连接进行修改,而无需根据第一模块向第四模块发送的第三通知。
综上所述,本申请实施例提供的数据传输方法,通过AS层的第三模块建立QoS流对应的资源并将第一建立完成指令发送至D2D层的第二模块,使得该第二模块能够及时获知AS层中与该QoS流对应的资源的建立情况,便于UE与UE之间更好地基于该QoS流以及该QoS流对应的资源进行直连通信,实现了一种D2D层以及AS层之间的数据的传输方式,并且,由于第三模块所建立的资源是基于QoS流建立的,使得该数据的传输方式能够满足业务数据对应的QoS。
第二种数据传输方法,第一模块管理QoS流包括修改QoS流。图6示出了本申请实施例提供的一种数据传输方法的流程图,该方法可以应用于上述图2所示的数据传输装置20,该方法包括:
步骤501、第一模块修改QoS流,并向第三模块发送修改指令。
步骤501中,第一模块修改QoS流,并向第三模块发送修改指令的相关过程可以参考上述步骤401中,第一模块建立QoS流,并向第三模块发送第一建立指令的相关过程。
其中,管理指令为修改指令,该修改指令包括PFI、QoS参数以及原因值。可选的,该原因值可以参考上述步骤401,本申请实施例在此不再赘述。
步骤502、第三模块根据修改指令,修改QoS流对应的资源,并向第二模块发送修改完成指令。
步骤502中,第三模块根据修改指令,修改QoS流对应的资源,并向第二模块发送修改完成指令的过程可以参考上述步骤402中,第三模块根据第一建立指令,建立该QoS流对应的资源,并向第二模块发送第一建立完成指令的相关过程,本申请实施例在此不再赘述。
步骤503、第二模块接收修改完成指令。
步骤503中,第二模块接收修改完成指令可以参考上述步骤403中的相关过程,本申请实施例在此不再赘述。
与上述第一模块管理QoS流包括建立QoS流所对应的实施例类似,虽然第三模块根据该修改完成指令修改了该QoS流对应的资源,但是,该建立的资源有时并不满足该QoS流的需求,在该种情况下,AS层中的SDAP难以将该QoS流映射至与该QoS流对应的资源中的DRB上。因此,本申请实施例所提供的数据传输方法还包括如下步骤:
步骤504、当第三模块确定与该QoS流对应的资源不满足该QoS流的需求时,向第一模块发送第一通知。
步骤505、第一模块根据第一通知,释放QoS流。
步骤506、第一模块根据第一通知,向第三模块发送监控指令。
可选的,当数据传输装置中的D2D层还包括第四模块时,请继续参考图6,该数据传输方法还可以包括如下步骤:
步骤507、第一模块根据第一通知,向第四模块发送第三通知,该第三通知用于指示该QoS流对应的资源不满足QoS流的需求。
步骤508、第四模块根据第三通知,释放或者修改QoS流对应的连接。
上述步骤504至步骤508的相关过程描述可以参考上述步骤404至步骤408的相关描述,本申请实施例在此不再赘述。
综上所述,本申请实施例提供的数据传输方法,通过AS层的第三模块修改QoS流对应的资源并将修改完成指令发送至第二模块,使得该第二模块能够及时获知AS层中与该QoS流对应的资源的修改情况,便于UE与UE之间更好地基于该QoS流以及该QoS流对应的资源进行直连通信,实现了一种D2D层以及AS层之间的数据的传输方式,并且,由于第三模块所修改的资源是基于QoS流修改的,使得该数据的传输方式能够满足业务数据对应的QoS。
第三种数据传输方法,第一模块管理QoS流包括修改QoS流。图7示出了本申请实施例提供的一种数据传输方法的流程图,该方法可以应用于上述图2所示的数据传输装置20,该方法包括:
步骤601、第一模块释放QoS流,并向第三模块发送释放指令。
第一模块根据当前业务数据对应的业务需求释放QoS流,并向第三模块发送释放指令,其相关过程可以参考上述步骤401中第一模块建立QoS流,并向第三模块发送第一建立指令的相关过程,本申请实施例在此不再赘述。
在本申请实施例中,管理指令包括释放指令,该释放指令可以包括PFI以及原因值。可选的,该原因值包括以下至少一种:业务停止、离开业务授权区域、信号质量差、QoS授权撤回以及业务授权撤回。
步骤602、第三模块根据释放指令,释放该QoS流对应的资源,并向第二模块发送释放完成指令。
步骤602中,第三模块根据释放指令,释放QoS流对应的资源,并向第二模块发送释放完成指令的过程可以参考上述步骤402中,第三模块根据第一建立指令,建立该QoS流对应的资源,并向第二模块发送第一建立完成指令的相关过程,本申请实施例在此不再赘述。
步骤603、第二模块接收释放完成指令。
步骤603中,第二模块接收释放完成指令可以参考上述步骤403中的相关过程,本申请 实施例在此不再赘述。
在第二模块接收释放完成指令之后,该第二模块获悉AS层中与该QoS流对应的资源已经释放,在该种情况下,第一模块当前的业务数据无法再继续进行传输,若想继续传输该业务数据,作为另一种可选的实施方式,第一模块可以建立新的QoS流以用于传输该业务数据。则可以继续执行下述步骤604至步骤606。
步骤604、第一模块建立新的QoS流,并向第三模块发送第二建立指令。
步骤605、第三模块根据第二建立指令,建立该新的QoS流对应的资源,并向第二模块发送第二建立完成指令。
步骤606、第二模块接收第二建立完成指令。
上述步骤604至步骤606中的相关介绍可以参考上述步骤401至步骤403的相关介绍,本申请实施例在此不再赘述。
综上所述,本申请实施例提供的数据传输方法,通过AS层的第三模块建立QoS流对应的资源并将释放完成指令发送至D2D层的第二模块,使得该第二模块能够及时获知AS层中与该QoS流对应的资源的释放情况,由于第三模块释放的是QoS流对应的资源,使得该数据的传输方式能够满足业务数据对应的QoS,有效实现了一种数据传输方式。
在5G领域中,使用D2D技术的业务包括V2X、网络控制互动服务(Network Controlled Interactive Services,NCIS)、公共安全(Public Safety)等。其中,用于处理V2X业务的D2D层可以包括V2X层,用于处理NCIS业务的D2D层可以包括NCIS层,以及,用于处理Public Safety业务的D2D层可以包括Public Safety层,同理对于其他业务,本申请实施例在此不进行一一举例。
图8示出的是本申请实施例提供的一种QoS模型的框图,以下结合该QoS模型对上述实施例所描述的数据传输方法进行进一步说明,本申请实施例继续以V2X业务为例进行说明。
在进行V2X业务时,V2X层接收到用于进行V2X业务的V2X数据包。V2X层中设置有PC5 QoS规则,V2X层中的第一模块(图中未示出)基于接收到的V2X数据包,根据该PC5 QoS规则建立该PC5 QoS规则对应的PC5 QoS流,该PC5 QoS流中包括V2X数据包以及QFI。第一模块向RRC发送第一建立指令(本申请实施例以第一模块建立QoS流为例),RRC根据该第一建立指令,建立该PC5 QoS流对应的资源,并向第二模块(图中未示出)发送第一建立完成指令。
在第二模块接收到该第一建立完成指令之后,便获知当前AS层中与该PC5 QoS流对应的资源建立完成,基于此,V2X层将PC5 QoS流的数据发送至SDAP,SDAP将PC5 QoS流的数据映射至建立完成的资源中对应的数据无线承载,并进行对应的处理流程,该处理流程包括将数据包从分组数据汇聚协议(Packet Data Convergence Protocol,PDCP)传输至无线链路控制(Radio Link Control,RLC)以及介质访问控制(Medium Access Control,MAC),并最终在物理层(Physical Layer,PHY)上发送的过程。V2X层将数据对应的信令发送至RRC,由RRC建立与该信令对应的信令无线承载,并进行对应的处理流程,该处理流程包括将信令从PDCP传输至RLC以及MAC,并最终在PHY上发送的过程。如此实现了V2X数据包在V2X层以及AS层的传输。
可选的,图2所示的数据传输装置中,所述第一模块201,用于建立QoS流,并向所述第三模块203发送第一建立指令;所述第三模块203,用于根据所述第一建立指令,建立所述QoS流对应的资源,并向所述第二模块202发送第一建立完成指令;所述第二模块202,用于接收所述第一建立完成指令。
可选的,所述第一建立指令包括服务质量流标识PFI、QoS参数以及原因值。
可选的,所述第一模块201,用于修改QoS流,并向所述第三模块发送修改指令;所述第三模块203,用于根据所述修改指令,修改所述QoS流对应的资源,并向所述第二模块发送修改完成指令;所述第二模块202,用于接收所述修改完成指令。
可选的,所述修改指令包括PFI、QoS参数以及原因值。
可选的,所述原因值包括以下至少一种:信令触发;数据触发;公共安全业务;高优先级业务。
可选的,所述第三模块203,还用于当所述第三模块确定与所述QoS流对应的资源不满足所述QoS流的需求时,向所述第一模块发送第一通知;
所述第一模块,还用于根据所述第一通知,释放所述QoS流,
或,
所述第一模块,还用于根据所述第一通知,向所述第三模块发送监控指令。
可选的,当所述第一模块201还用于根据所述第一通知,向所述第三模块203发送监控指令,
所述第三模块203,还用于根据所述监控指令,当所述第三模块203确定与所述QoS流对应的资源满足所述QoS流的需求时,向所述第一模块201发送第二通知;所述第一模块201,还用于根据所述第二通知管理所述QoS流。
可选的,如图5所示的数据传输装置,所述D2D层还包括第四模块204,所述第四模块204用于建立多个用户设备UE之间的连接。
可选的,所述第一模块201,还用于根据所述第一通知,向所述第四模块204发送第三通知,所述第三通知用于指示所述QoS流对应的资源不满足所述QoS流的需求;所述第四模块204,还用于根据所述第三通知,释放或者修改所述QoS流对应的连接。
可选的,所述第一模块201,用于释放QoS流,并向所述第三模块203发送释放指令;
所述第三模块203,用于根据所述释放指令,释放所述QoS流对应的资源,并向所述第二模块202发送释放完成指令;
所述第二模块202,用于接收所述释放完成指令。
可选的,所述第一模块201,还用于建立新的QoS流,并向所述第三模块203发送第二建立指令;
所述第三模块203,还用于根据所述第二建立指令,建立所述新的QoS流对应的资源,并向所述第二模块202发送第二建立完成指令;
所述第二模块202,还用于接收所述第二建立完成指令。
可选的,所述释放指令包括PFI以及原因值。
可选的,所述原因值包括以下至少一种:业务停止;离开业务授权区域;信号质量差; QoS授权撤回;业务授权撤回。
可选的,所述第一模块201,用于根据QoS规则建立所述QoS规则对应的QoS流;所述QoS流具有PFI,所述QoS规则包括QoS参数,或,所述QoS规则对应QoS参数。
综上所述,本申请实施例提供的数据传输装置,通过AS层的第三模块管理QoS流对应的资源并将管理完成指令发送至D2D层的第二模块,使得该第二模块能够及时获知AS层中与该QoS流对应的资源的管理情况,便于UE与UE之间更好地基于该QoS流以及该QoS流对应的资源进行直连通信,实现了一种D2D层以及AS层之间的数据的传输方式,并且,由于第三模块所管理的资源是基于QoS流建立的,使得该数据的传输方式能够满足业务数据对应的QoS。
本申请实施例提供了一种用户设备,该用户设备包括上述图2或图5所示的数据传输装置。
请参考图9,其示出了本申请实施例提供的一种用户设备的结构方框图,该用户设备包括:处理器91、接收器92、发射器93、存储器94和总线95。
处理器91包括一个或者一个以上处理核心,处理器91通过运行软件程序以及模块,从而执行各种功能应用以及信息处理。
接收器92和发射器93可以实现为一个通信组件,该通信组件可以是一块通信芯片,通信芯片中可以包括接收模块、发射模块和调制解调模块等,用于对信息进行调制和/或解调,并通过无线信号接收或发送该信息。
存储器94通过总线95与处理器91相连。
存储器94可用于存储至少一个指令,处理器91用于执行该至少一个指令,以实现上述方法实施例中的各个步骤。
此外,存储器94可以由任何类型的易失性或非易失性存储设备或者它们的组合实现,如静态随时存取存储器(SRAM),电可擦除可编程只读存储器(EEPROM),可擦除可编程只读存储器(EPROM),可编程只读存储器(PROM),只读存储器(ROM),磁存储器,快闪存储器,磁盘或光盘。
以上所述仅为本申请的可选实施例,并不用以限制本申请,凡在本申请的精神和原则之内,所作的任何修改、等同替换、改进等,均应包含在本申请的保护范围之内。
本领域普通技术人员可以理解实现上述实施例的全部或部分步骤可以通过硬件来完成,也可以通过程序来指令相关的硬件完成,所述的程序可以存储于一种计算机可读存储介质中,上述提到的存储介质可以是只读存储器,磁盘或光盘等。

Claims (32)

  1. 一种数据传输方法,其特征在于,所述方法应用于数据传输装置,所述装置包括设备对设备D2D层以及接入层AS层,所述D2D层包括第一模块以及第二模块,所述AS层包括第三模块,所述方法包括:
    所述第一模块管理服务质量QoS流,并向所述第三模块发送管理指令;
    所述第三模块根据所述管理指令,管理所述QoS流对应的资源,并向所述第二模块发送管理完成指令;
    所述第二模块接收所述管理完成指令。
  2. 根据权利要求1所述的方法,其特征在于,
    所述第一模块管理QoS流,并向所述第三模块发送管理指令,包括:
    所述第一模块建立QoS流,并向所述第三模块发送第一建立指令;
    所述第三模块根据所述管理指令,管理所述QoS流对应的资源,并向所述第二模块发送管理完成指令,包括:
    所述第三模块根据所述第一建立指令,建立所述QoS流对应的资源,并向所述第二模块发送第一建立完成指令;
    所述第二模块接收所述管理完成指令,包括:
    所述第二模块接收所述第一建立完成指令。
  3. 根据权利要求1所述的方法,其特征在于,
    所述第一模块管理QoS流,并向所述第三模块发送管理指令,包括:
    所述第一模块修改QoS流,并向所述第三模块发送修改指令;
    所述第三模块根据所述管理指令,管理所述QoS流对应的资源,并向所述第二模块发送管理完成指令,包括:
    所述第三模块根据所述修改指令,修改所述QoS流对应的资源,并向所述第二模块发送修改完成指令;
    所述第二模块接收所述管理完成指令,包括:
    所述第二模块接收所述修改完成指令。
  4. 根据权利要求2或3所述的方法,其特征在于,所述管理指令包括PFI、QoS参数以及原因值。
  5. 根据权利要求4所述的方法,其特征在于,所述原因值包括以下至少一种:
    信令触发;
    数据触发;
    公共安全业务;
    高优先级业务。
  6. 根据权利要求2或3所述的方法,其特征在于,所述方法还包括:
    当所述第三模块确定与所述QoS流对应的资源不满足所述QoS流的需求时,向所述第一模块发送第一通知;
    所述第一模块根据所述第一通知,释放所述QoS流,
    或,
    所述第一模块根据所述第一通知,向所述第三模块发送监控指令。
  7. 根据权利要求6所述的方法,其特征在于,当所述第一模块根据所述第一通知,向所述第三模块发送监控指令,所述方法还包括:
    所述第三模块根据所述监控指令,当所述第三模块确定与所述QoS流对应的资源满足所述QoS流的需求时,向所述第一模块发送第二通知;
    所述第一模块根据所述第二通知管理所述QoS流。
  8. 根据权利要求6所述的方法,其特征在于,所述D2D层还包括第四模块,所述第四模块用于建立多个用户设备UE之间的连接。
  9. 根据权利要求8所述的方法,其特征在于,所述方法还包括:
    所述第一模块根据所述第一通知,向所述第四模块发送第三通知,所述第三通知用于指示所述QoS流对应的资源不满足所述QoS流的需求;
    所述第四模块根据所述第三通知,释放或者修改所述QoS流对应的连接。
  10. 根据权利要求1所述的方法,其特征在于,
    所述第一模块管理QoS流,并向所述第三模块发送管理指令,包括:
    所述第一模块释放QoS流,并向所述第三模块发送释放指令;
    所述第三模块根据所述管理指令,管理所述QoS流对应的资源,并向所述第二模块发送管理完成指令,包括:
    所述第三模块根据所述释放指令,释放所述QoS流对应的资源,并向所述第二模块发送释放完成指令;
    所述第二模块接收所述管理完成指令,包括:
    所述第二模块接收所述释放完成指令。
  11. 根据权利要求10所述的方法,其特征在于,所述方法还包括:
    所述第一模块建立新的QoS流,并向所述第三模块发送第二建立指令;
    所述第三模块根据所述第二建立指令,建立所述新的QoS流对应的资源,并向所述第二模块发送第二建立完成指令;
    所述第二模块接收所述第二建立完成指令。
  12. 根据权利要求10所述的方法,其特征在于,所述释放指令包括PFI以及原因值。
  13. 根据权利要求12所述的方法,其特征在于,所述原因值包括以下至少一种:
    业务停止;
    离开业务授权区域;
    信号质量差;
    QoS授权撤回;
    业务授权撤回。
  14. 根据权利要求8所述的方法,其特征在于,第一模块为会话管理SM模块,所述第二模块为服务质量流控制QFC模块,所述第三模块为无线资源控制RRC,所述第四模块为移动性管理MM模块。
  15. 根据权利要求1所述的方法,其特征在于,所述第一模块建立QoS流,包括:
    所述第一模块根据QoS规则建立所述QoS规则对应的QoS流;
    所述QoS流具有PFI,所述QoS规则包括QoS参数,或,所述QoS规则对应QoS参数。
  16. 一种数据传输装置,其特征在于,所述装置包括:设备对设备D2D层以及接入层AS层,所述D2D层包括第一模块以及第二模块,所述AS层包括第三模块,
    所述第一模块,用于管理服务质量QoS流,并向所述第三模块发送管理指令;
    所述第三模块,用于根据所述管理指令,管理所述QoS流对应的资源,并向所述第二模块发送管理完成指令;
    所述第二模块,用于接收所述管理完成指令。
  17. 根据权利要求16所述的装置,其特征在于,
    所述第一模块,用于建立QoS流,并向所述第三模块发送第一建立指令;
    所述第三模块,用于根据所述第一建立指令,建立所述QoS流对应的资源,并向所述第二模块发送第一建立完成指令;
    所述第二模块,用于接收所述第一建立完成指令。
  18. 根据权利要求16所述的装置,其特征在于,
    所述第一模块,用于修改QoS流,并向所述第三模块发送修改指令;
    所述第三模块,用于根据所述修改指令,修改所述QoS流对应的资源,并向所述第二模块发送修改完成指令;
    所述第二模块,用于接收所述修改完成指令。
  19. 根据权利要求17或18所述的装置,其特征在于,所述管理指令包括PFI、QoS参数以及原因值。
  20. 根据权利要求19所述的装置,其特征在于,所述原因值包括以下至少一种:
    信令触发;
    数据触发;
    公共安全业务;
    高优先级业务。
  21. 根据权利要求17或18所述的装置,其特征在于,
    所述第三模块,还用于当所述第三模块确定与所述QoS流对应的资源不满足所述QoS流的需求时,向所述第一模块发送第一通知;
    所述第一模块,还用于根据所述第一通知,释放所述QoS流,
    或,
    所述第一模块,还用于根据所述第一通知,向所述第三模块发送监控指令。
  22. 根据权利要求21所述的装置,其特征在于,
    当所述第一模块还用于根据所述第一通知,向所述第三模块发送监控指令,
    所述第三模块,还用于根据所述监控指令,当所述第三模块确定与所述QoS流对应的资源满足所述QoS流的需求时,向所述第一模块发送第二通知;
    所述第一模块,还用于根据所述第二通知管理所述QoS流。
  23. 根据权利要求21所述的装置,其特征在于,所述D2D层还包括第四模块,所述第四模块用于建立多个用户设备UE之间的连接。
  24. 根据权利要求23所述的装置,其特征在于,
    所述第一模块,还用于根据所述第一通知,向所述第四模块发送第三通知,所述第三通知用于指示所述QoS流对应的资源不满足所述QoS流的需求;
    所述第四模块,还用于根据所述第三通知,释放或者修改所述QoS流对应的连接。
  25. 根据权利要求16所述的装置,其特征在于,
    所述第一模块,用于释放QoS流,并向所述第三模块发送释放指令;
    所述第三模块,用于根据所述释放指令,释放所述QoS流对应的资源,并向所述第二模块发送释放完成指令;
    所述第二模块,用于接收所述释放完成指令。
  26. 根据权利要求25所述的装置,其特征在于,
    所述第一模块,还用于建立新的QoS流,并向所述第三模块发送第二建立指令;
    所述第三模块,还用于根据所述第二建立指令,建立所述新的QoS流对应的资源,并向所述第二模块发送第二建立完成指令;
    所述第二模块,还用于接收所述第二建立完成指令。
  27. 根据权利要求25所述的装置,其特征在于,所述释放指令包括PFI以及原因值。
  28. 根据权利要求27所述的装置,其特征在于,所述原因值包括以下至少一种:
    业务停止;
    离开业务授权区域;
    信号质量差;
    QoS授权撤回;
    业务授权撤回。
  29. 根据权利要求23所述的装置,其特征在于,第一模块为会话管理SM模块,所述第二模块为服务质量流控制QFC模块,所述第三模块为无线资源控制RRC,所述第四模块为移动性管理MM模块。
  30. 根据权利要求1所述的装置,其特征在于,所述第一模块,用于根据QoS规则建立所述QoS规则对应的QoS流;
    所述QoS流具有PFI,所述QoS规则包括QoS参数,或,所述QoS规则对应QoS参数。
  31. 一种终端,其特征在于,所述终端包括处理器和存储器,所述存储器存储有至少一条指令,所述至少一条指令用于被所述处理器执行以实现上述权利要求1至15中任一所述的数据传输方法。
  32. 一种计算机可读存储介质,其特征在于,所述计算机可读存储介质存储有至少一条指令,所述至少一条指令用于被处理器执行以实现上述权利要求1至15中任一所述的数据传输方法。
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