WO2023077329A1 - 通信方法及装置 - Google Patents

通信方法及装置 Download PDF

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Publication number
WO2023077329A1
WO2023077329A1 PCT/CN2021/128531 CN2021128531W WO2023077329A1 WO 2023077329 A1 WO2023077329 A1 WO 2023077329A1 CN 2021128531 W CN2021128531 W CN 2021128531W WO 2023077329 A1 WO2023077329 A1 WO 2023077329A1
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WIPO (PCT)
Prior art keywords
terminal device
type
signaling
sent
information
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PCT/CN2021/128531
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English (en)
French (fr)
Inventor
杨皓睿
杨韧
陈扬
Original Assignee
Oppo广东移动通信有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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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 CN202180100560.2A priority Critical patent/CN117643155A/zh
Priority to PCT/CN2021/128531 priority patent/WO2023077329A1/zh
Publication of WO2023077329A1 publication Critical patent/WO2023077329A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management

Definitions

  • the present application relates to the communication field, and in particular to a communication method and device.
  • the state change signaling of Packet Switching Data off can notify the network device that the PS Data off state of the terminal device has changed.
  • the terminal device when the terminal device wants to send the PS Data off state change signaling in the idle state, it can first initiate the SR process to the access and mobility management function (Access and Mobility Management Function, AMF) network element, but If the non-permitted area of the network device changes after the terminal device initiates the SR process, the AMF may reject the connection request, and then the terminal device needs to initiate the SR process again.
  • AMF Access and Mobility Management Function
  • the implementation solution in the prior art will cause the terminal device and the AMF to repeatedly execute the SR process, thereby prolonging the processing time of the signaling of the PS Data off state change.
  • the embodiment of the present application provides a communication method and device, so as to avoid the problem that the terminal device and the AMF repeatedly execute the SR process, which causes the processing time of the PS Data off state change signaling to be prolonged.
  • the embodiment of the present application provides a communication method applied to a network device, including:
  • the service type in the service request message is any one of the first type, the second type, and the third type, and the first type is used to indicate information to be sent It is general signaling (the second type is used to indicate that the information to be sent is high-priority signaling, and the third type is used to indicate that the information to be sent is user data;
  • the NAS connection is used to receive information sent by the terminal device based on the NAS connection, and the information includes first signaling with a high priority.
  • the embodiment of the present application provides a communication method applied to a terminal device, including:
  • the service type in the service request message is any one of the first type, the second type, and the third type, and the first type is used to indicate that the information to be sent is In general signaling, the second type is used to indicate that the information to be sent is high-priority signaling, and the third type is used to indicate that the information to be sent is user data;
  • the NAS connection is used for the terminal device to send information, and the information includes high-priority first signaling.
  • the embodiment of the present application provides a communication device applied to network equipment, including:
  • a receiving module configured to receive a service request message sent by a terminal device, wherein the service type in the service request message is any one of the first type, the second type, and the third type, and the first type is used for indicating that the information to be sent is general signaling (the second type is used to indicate that the information to be sent is high-priority signaling, and the third type is used to indicate that the information to be sent is user data;
  • a connection module configured to establish a NAS connection with the terminal device according to the service request message
  • the NAS connection is used to receive information sent by the terminal device based on the NAS connection, and the information includes high-priority signaling.
  • the embodiment of the present application provides a communication device applied to a terminal device, including:
  • a sending module configured to send a service request message to a network device, wherein the service type in the service request message is any one of the first type, the second type, and the third type, and the first type is used to indicate
  • the information to be sent is general signaling, the second type is used to indicate that the information to be sent is high-priority signaling, and the third type is used to indicate that the information to be sent is user data;
  • a connection module configured to establish a NAS connection with the network device
  • the NAS connection is used for the terminal device to send information, where the information includes high-priority signaling.
  • the embodiment of the present application provides a network device, including: a transceiver, a processor, and a memory;
  • the memory stores computer-executable instructions
  • the processor executes the computer-executable instructions stored in the memory, so that the processor executes the communication method as described in the first aspect above.
  • the embodiment of the present application provides a terminal device, including: a transceiver, a processor, and a memory;
  • the memory stores computer-executable instructions
  • the processor executes the computer-executable instructions stored in the memory, so that the processor executes the communication method as described in the second aspect above.
  • the embodiment of the present application provides a computer-readable storage medium, where computer-executable instructions are stored in the computer-readable storage medium, and when the computer-executable instructions are executed by a processor, they are used to implement the above first aspect or The communication method as described in the second aspect above.
  • an embodiment of the present application provides a computer program product, including a computer program, wherein, when the computer program is executed by a processor, the communication method described in the first aspect or the second aspect above is implemented.
  • An embodiment of the present application provides a communication method and device, the method including: receiving a service request message sent by a terminal device, wherein the service type in the service request message is any one of the first type, the second type, and the third type
  • the first type is used to indicate that the information to be sent is general signaling
  • the second type is used to indicate that the information to be sent is high-priority signaling
  • the third type is used to indicate that the information to be sent is user data.
  • a non-access stratum NAS connection is established with the terminal device; wherein, the NAS connection is used to receive information sent by the terminal device based on the NAS connection, and the information includes high-priority signaling.
  • the network device By setting the service type in the service request message to the second type, and/or, the network device always establishes a NAS connection with the terminal device according to the service request message, that is to say, it does not reject the service request of the terminal device, thereby effectively preventing the terminal device from Repeat the SR process with the network device, thereby effectively avoiding the problem that the processing time of the signaling of the PS Data off state change caused by the repeated execution of the SR process is prolonged.
  • FIG. 1 is a schematic diagram of a communication scenario provided by an embodiment of the present application.
  • FIG. 2 is a schematic diagram of a 5G network architecture
  • Figure 3 is a schematic diagram of a 5G network architecture based on a service interface in a non-roaming scenario
  • FIG. 4 is a schematic diagram of the disallowed area provided by the embodiment of the present application.
  • FIG. 5 is a schematic diagram of the implementation of the repeated execution of the SR process provided by the embodiment of the present application.
  • FIG. 6 is a flowchart of a communication method provided by an embodiment of the present application.
  • FIG. 7 is a first implementation schematic diagram of determining a service type provided by an embodiment of the present application.
  • FIG. 8 is a second implementation schematic diagram of determining the service type provided by the embodiment of the present application.
  • FIG. 9 is a second schematic flow diagram of the communication method provided by the embodiment of the present application.
  • FIG. 10 is a first structural schematic diagram of a communication device provided by an embodiment of the present application.
  • FIG. 11 is a second structural schematic diagram of a communication device provided by an embodiment of the present application.
  • FIG. 12 is a schematic structural diagram of a terminal device provided in an embodiment of the present application.
  • FIG. 13 is a schematic structural diagram of a network device provided by an embodiment of the present application.
  • Terminal device It can be a device that includes wireless transceiver functions and can cooperate with network devices to provide users with communication services.
  • the terminal equipment may refer to user equipment (User Equipment, UE), access terminal equipment, subscriber unit, user station, mobile station, mobile station, remote station, remote terminal equipment, mobile equipment, user terminal equipment, terminal equipment, A wireless communication device, user agent, or user device.
  • User Equipment User Equipment
  • a terminal device may be a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, a Personal Digital Assistant (PDA), a wireless Handheld devices with communication functions, computing devices or other processing devices connected to wireless modems, vehicle-mounted devices, wearable devices, terminal devices in future 5G networks or networks after 5G, etc.
  • SIP Session Initiation Protocol
  • WLL Wireless Local Loop
  • PDA Personal Digital Assistant
  • Network equipment can be equipment used to communicate with terminal equipment, for example, it can be Global System for Mobile Communication (GSM) or Code Division Multiple Access (CDMA) communication system
  • the base station (Base Transceiver Station, BTS) in the wideband code division multiple access (Wideband Code Division Multiple Access, WCDMA) system (NodeB, NB) can also be the evolved base station (Evolutionary Base Station) in the LTE system Node B, eNB or eNodeB), or the network device can be a relay station, an access point, a vehicle device, a wearable device, and a network side device in a future 5G network or a network after 5G or a future evolved public land mobile network (Public Land Mobile Network, PLMN) network equipment, etc.
  • GSM Global System for Mobile Communication
  • CDMA Code Division Multiple Access
  • the network device involved in the embodiment of the present application may also be called a radio access network (Radio Access Network, RAN) device.
  • the RAN device is connected with the terminal device, and is used to receive the data of the terminal device and send it to the core network device.
  • RAN equipment corresponds to different equipment in different communication systems, for example, in the 2G system, it corresponds to the base station and the base station controller, in the 3G system, it corresponds to the base station and the radio network controller (Radio Network Controller, RNC), and in the 4G system, it corresponds to the evolution Evolutionary Node B (eNB), which corresponds to the 5G system in the 5G system, such as the access network equipment (such as gNB, centralized unit CU, distributed unit DU) in New Radio (NR).
  • gNB centralized unit CU
  • DU New Radio
  • FIG. 1 is a schematic diagram of a communication scenario provided by an embodiment of the present application. Please refer to FIG. 1 , including a network device 101 and a terminal device 102, wireless communication can be performed between the network device 101 and the terminal device 102, wherein the terminal device 102 can communicate with at least one core via a radio access network (Radio Access Network, RAN) network for communication.
  • RAN Radio Access Network
  • the communication system can be Global System of Mobile communication (GSM for short) system, Code Division Multiple Access (CDMA for short) system, Wideband Code Division Multiple Access (Wideband Code Division Multiple Access for short) WCDMA) system, Long Term Evolution (LTE for short) system or 5th-Generation (5G for short) system.
  • GSM Global System of Mobile communication
  • CDMA Code Division Multiple Access
  • WCDMA Wideband Code Division Multiple Access
  • LTE Long Term Evolution
  • 5G 5th-Generation
  • the network device can be a base station (Base Transceiver Station, referred to as BTS) in a GSM system or a CDMA system, or a base station (NodeB, referred to as NB) in a WCDMA system, or an evolved base station in an LTE system. (evolved NodeB, eNB for short), access point (access point, AP) or relay station, or a base station in the 5G system, etc., which are not limited here.
  • BTS Base Transceiver Station
  • NodeB NodeB
  • AP access point
  • relay station or a base station in the 5G system, etc., which are not limited here.
  • the 5G mobile communication system described in this application includes a non-standalone (NSA) 5G mobile communication system and/or a standalone (standalone, SA) 5G mobile communication system.
  • the technical solution provided by this application can also be applied to future communication systems, such as the sixth generation mobile communication system.
  • the communication system may also be a PLMN network, a device-to-device (device-to-device, D2D) network, a machine-to-machine (machine to machine, M2M) network, an IoT network, or other networks.
  • the network architecture and business scenarios described in the embodiments of the present application are for more clearly illustrating the technical solutions of the embodiments of the present application, and do not constitute limitations on the technical solutions provided by the embodiments of the present application.
  • the technical solutions provided by the embodiments of this application are also applicable to similar technical problems.
  • the communication method provided by this application can be applied in the 5G system, and can also be applied in the evolved packet system (Evolved Packet System, EPS).
  • the corresponding network architecture may include a UE, an access network (access network, AN), a core network, and a data network (Data Network, DN).
  • the access network device is mainly used to realize functions such as wireless physical layer functions, resource scheduling and wireless resource management, wireless access control, and mobility management; core network equipment may include management equipment and gateway equipment, and management equipment is mainly used for terminals Device registration, security authentication, mobility management and location management, etc., the gateway device is mainly used to establish a channel with the terminal device, and forward the data packets between the terminal device and the external data network on this channel; the data network can include the network Devices (such as servers, routers, etc.), the data network is mainly used to provide various data services for terminal devices.
  • core network equipment may include management equipment and gateway equipment, and management equipment is mainly used for terminals Device registration, security authentication, mobility management and location management, etc.
  • the gateway device is mainly used to establish a channel with the terminal device, and forward the data packets between the terminal device and the external data network on this channel
  • the data network can include the network Devices (such as servers, routers, etc.), the data network is mainly used to provide various data services for terminal devices.
  • the network architecture may be a 5G network architecture.
  • Figure 2 is a schematic diagram of a 5G network architecture.
  • the 5G system is also called a new wireless communication system, a new access technology (New Radio, NR) or a next-generation mobile communication system.
  • New Radio NR
  • the access network in the 5G system can be a radio access network (radio access network, (R)AN), and the (R)AN device in the 5G system can be composed of multiple 5G-(R)AN nodes
  • the 5G-(R)AN node may include: a non-3GPP access network such as an access point (access point, AP) of a WiFi network, a next-generation base station (which may be collectively referred to as a new generation wireless access network node (NG- RAN node), where the next-generation base station includes new air interface base station (NR nodeB, gNB), new generation evolved base station (NG-eNB), central unit (central unit, CU) and distributed unit (distributed unit, DU) separation gNB, etc.), transmission receive point (transmission receive point, TRP), transmission point (transmission point, TP) or other nodes.
  • a non-3GPP access network such as an access point (access point, AP) of a WiFi network
  • NG- RAN node
  • the 5G core network (5G core/new generation core, 5GC/NGC) includes access and mobility management function (Access and Mobility Management Function, AMF) network elements, session management function (Session Management Function, SMF) ) network element, user plane function (User Plane Function, UPF) network element, authentication server function (Authentication Server Function, AUSF) network element, policy control function (Policy Control Function, PCF) network element, application function (Application Function, AF) network element, unified data management function (unified data management, UDM) network element, network slice selection function (Network Slice Selection Function, NSSF) network element and other functional units.
  • AMF Access and Mobility Management Function
  • SMF Session Management Function
  • UPF User Plane Function
  • UPF User Plane Function
  • AUSF Authentication Server Function
  • PCF Policy Control Function
  • PCF Policy Control Function
  • unified data management function unified data management, UDM
  • NSSF Network Slice Selection Function
  • the AMF network element is mainly responsible for services such as mobility management and access management. Among them, the AMF network element can also be used for positioning between the UE and the location management function (Location management function, LMF) network element, and between the RAN and the LMF network element. Service messages provide transport.
  • LMF Location management function
  • the SMF network element is mainly responsible for session management, UE address management and allocation, dynamic host configuration protocol functions, selection and control of user plane functions, etc.
  • UPF is mainly responsible for external connection to the data network (data network, DN) and user plane data packet routing and forwarding, message filtering, and execution of quality of service (quality of service, QoS) control related functions, etc.
  • AUSF is mainly responsible for the authentication function of the terminal equipment and so on.
  • PCF network elements are mainly responsible for providing a unified policy framework for network behavior management, providing policy rules for control plane functions, and obtaining registration information related to policy decisions.
  • control and mobility management functions such as access authentication for terminal equipment, security encryption, and location registration
  • user Session management functions such as establishment, release and modification of plane transmission paths.
  • Each functional unit in 5GC can communicate through the next generation network (next generation, NG) interface.
  • the UE can transmit control plane messages with the AMF network element through the NG interface 1 (N1 for short), and the RAN device can transmit the control plane message through the NG interface 1 (N1 for short).
  • Interface 3 establishes a user plane data transmission channel with UPF
  • AN/RAN equipment can establish a control plane signaling connection with AMF network elements through NG interface 2 (N2 for short), and UPF can communicate with
  • the SMF network element performs information exchange
  • the UPF can exchange user plane data with the data network DN through the NG interface 6 (referred to as N6)
  • the AMF network element can perform information exchange with the SMF network element through the NG interface 11 (referred to as N11)
  • the SMF network element can Information exchange is performed with the PCF network element through the NG interface 7 (N7 for short)
  • the AMF network element can perform information exchange with the AUSF through the NG interface 12 (N12 for short).
  • FIG. 2 is only an exemplary architecture diagram, and besides the functional units shown in FIG. 2 , the network architecture may also include other functional units.
  • the network architecture shown in Figure 2 is based on a reference point network architecture, and the network architecture is a network architecture in a non-roaming scenario.
  • the method of the present application can also be applied in a roaming scenario, and the network architecture is not limited to a reference point-based network. architecture, or a network architecture based on service-oriented interfaces.
  • Figure 3 is a schematic diagram of a 5G network architecture based on a service-based interface in a non-roaming scenario.
  • the core network of the 5G system also includes NEF and NRF network elements.
  • some network elements in the 5G core network are connected through the bus, as shown in Figure 3, AUSF network elements, AMF network elements, SMF network elements, AF network elements, UDM, PCF network elements, network
  • the storage function (Network Repository Function, NRF) network element, the Network Exposure Function (Network Exposure Function, NEF) network element and the NSSF network element are interconnected through the bus.
  • NRF Network Repository Function
  • NEF Network Exposure Function
  • a service interface is used, for example , the AUSF network element is connected to the bus through the Nausf interface, the AMF network element is connected to the bus through the Namf interface, the SMF network element is connected to the bus through the Nsmf interface, the AF network element is connected to the bus through the NAF network element interface, and the UDM uses the Nudm
  • the interface is connected to the bus
  • the PCF network element is connected to the bus through the NPCF network element interface
  • the NRF is connected to the bus through the Nnrf interface
  • the NEF is connected to the bus through the Nnef interface
  • the NSSF is connected to the bus through the Nnssf interface.
  • PS Data off is packet switching data interruption, and PS refers to (packet switch, packet switching).
  • PS refers to (packet switch, packet switching).
  • the user activation of 3GPP PS Data off described above can be understood as the user turning off the data flow of the terminal device.
  • the process described above can be understood as, when the data traffic of the terminal device is closed, the terminal device can inform the network device that the data traffic is closed, and then the network device needs to stop billing the data traffic, and only allows users to use Provision services, such as calling, texting, etc.
  • LADN Local Area Data Network
  • network devices can be configured with service area restrictions (Service Area Restrictions), which define which areas terminal devices can communicate with network devices and which areas terminal devices can The device cannot initiate communication with the network device; it is further divided into allowed area and non-allowed area
  • Service Area Restrictions Service Area Restrictions
  • the terminal device in the allowed area (allowed area), the terminal device is allowed to conduct normal business communication with the network device.
  • the terminal device In the non-allowed area (non-allowed area), neither the terminal device nor the network device is allowed to initiate Service Request (service request) or session management (SM, Session Management) signaling to obtain user services; the terminal device cannot enter the non-allowed area And trigger network selection or cell reselection; when the terminal device is in CM-CONNECTED and RRC-Inactive state, its radio resource control (Radio Resource Control, RRC) process is the same as in the allowed area; the RM process is also the same as in the allowed area ; If the network device is paging, the terminal device should also initiate a Service-Request to respond to the paging of the network. In short, in the disallowed area, the terminal device can reside in the same way as in the allowed area, but cannot do business (such as making calls, surfing the Internet, etc.).
  • RRC Radio Resource Control
  • CM Connection Management, Connection Management
  • CONNECTED refers to the connected state
  • Inactive refers to the inactive state.
  • the TA is introduced below, wherein the Tracking Area (Tracking Area) is a newly established concept for UE location management.
  • Tracking Area is a newly established concept for UE location management.
  • the core network can know the tracking area where the UE is located, and at the same time, when the UE in the idle state needs to be paged, all cells in the tracking area where the UE is registered perform paging.
  • PLMN Public Land Mobile Network
  • TAC Tracking Area Code
  • multiple TAs can form a TA list (TA list) and be assigned to a UE at the same time.
  • TA list TA list
  • the UE moves in the TA list, it does not need to perform TA updates to reduce frequent interactions with the network;
  • TA update needs to be performed, and the Mobility Management Entity (MME) or AMF reassigns a group of TAs to the UE.
  • MME Mobility Management Entity
  • AMF reassigns a group of TAs to the UE.
  • the newly allocated TA can also include the original There are some TAs in the TA list.
  • TA is cell-level configuration
  • multiple cells can be configured with the same TA, and a cell can only belong to one TA.
  • TAs Tracking Areas
  • the UE subscription data on UDM will contain a service area restriction, which may contain an allowed area and/or an unallowed area.
  • These restricted areas may use TAI and/or other geographical information (such as latitude and longitude, zip code, etc.) to identify.
  • the network device When sending it to the UE, the network device will first map these areas to a TA list and then send it to the UE.
  • the TA contained in the UE’s registration area must belong to the UE’s unallowed area; if the UE accesses in a service-allowed area, then the TA contained in the UE’s registration area must The TA must belong to the allowed area of the UE.
  • UDM stores the UE’s service restricted area information as part of the UE’s subscription data, and the PCF of the serving network can further adjust the UE’s service restricted area according to its network policy; during the registration process, if the AMF does not store the UE’s service area Restricted area data, it will obtain the user's service restricted area data from UDM; the serving AMF will enforce the UE's service area restricted function.
  • FIG. 4 is a schematic diagram of the disallowed area provided by the embodiment of the present application.
  • Service Area Restrictions contains 5 TAs, namely TAI1, TAI2, TAI3, TAI4, TAI5, among them, TAI1, TAI2, TAI3 can be mapped to TA list 1, TAI1 , TAI4, TAI5 can be mapped to TA list 2. And, among them, TA11, TAI2, and TAI5 may be allowed areas, for example, and corresponding TA14, TAI3 are not allowed areas.
  • the REGISTRATION ACCEPT (registration acceptance) message may include the Service area list.
  • the Service area list may include allowed areas. If the allowed areas listed in the Service area list are TAI1, TAI2, and TAI5, then TAI3 and TAI4 may be unallowed areas, as shown in Figure 4 above. Or, if there is no Service area list in the REGISTRATION ACCEPT message, then TAI1 ⁇ TAI5 are all allowed areas.
  • the 5G Non Access Stratum (NAS) protocol includes 5GMM and 5GSM, where MM refers to (Mobility Management, mobile management), and SM refers to (Session Management, session management).
  • the signaling of PS data off status indication is set in the "Extended protocol configuration options" (extended protocol configuration options) parameter of the session management layer 5GSM message, and the session on the terminal device side
  • the 5GSM messages of the management layer can only be parsed by the corresponding SMF network element on the network side.
  • the mobile management layer 5GMM also has some restrictions, and the network element AMF corresponding to the mobile management layer 5GMM needs to check these restrictions. For example, when the terminal device is located in a non-allowed area, when the AMF receives the general service request of the terminal device The service request of the terminal device will be rejected because the UE is located in the restricted area.
  • the terminal device When the terminal device is in the non-allowed area and is in the idle state, when it wants to send the PS data off state change signaling, the terminal device needs to enter the connection state first, and then it can send the PDU session modification request (PDU session modification request) to the SMF.
  • PDU session modification request PDU session modification request
  • the terminal device wants to enter the connection state, it needs to send a Service Request (service request) message to the AMF, in which the Service Type IE (service type) is set to "Elevated Signaling" (high priority signaling), AMF receives such When signaling, according to "Elevated Signaling", even if the terminal device is located in a non-allowed area, it will not reject the service request of the terminal device but help it complete the establishment of the link, so that the terminal device can send PS data off state change signaling .
  • Service Request Service request
  • AMF Service Type IE
  • Elelevated Signaling high priority signaling
  • FIG. 5 is a schematic diagram of implementation of the repeated execution of the SR process provided by the embodiment of the present application.
  • the terminal device can send a service request (Service Request) message, and the service type (Service Type) in the service request message is set to "signalling" (general signaling).
  • Service Request Service Request
  • Service Type Service Type
  • a terminal device when a terminal device wants to send a PS data off state change signaling, the terminal device determines that it is in an idle state and is not in a non-allowed area, and then initiates an SR process to establish a NAS connection. Because the terminal device thinks that it is not currently in the non-allowed area, the service type (Service Type) in the service request (Service Request) message sent by the terminal device is set to "signalling" (general signaling).
  • Service Type Service Type
  • Service Request Service Request
  • the AMF can send paging to the terminal equipment to notify its non-allowed area of the change.
  • the UE will ignore the paging and continue the initiated SR procedure. Specifically, when the UE is executing the initiated SR procedure, if the UE receives a paging message, then the UE will continue to execute the SR procedure. If for the SR procedure, the connection initiated by the current SR procedure is prohibited, then the UE will process the pending paging message, otherwise, the UE will ignore the paging message.
  • the terminal device sends a Service Request message to the AMF.
  • MT Mobile terminated
  • the Service type IE in the Service Request message is equal to Mobile terminated.
  • the AMF continues to process the SR process.
  • the AMF can send a configuration update command (Configuration Update Command) to the UE, where the configuration update command is used to update the list of disallowed areas, or send the configuration update after the SR process is completed Order.
  • Configuration Update Command Configuration Update Command
  • AMF can send a Service Reject (Service Reject) message to the terminal device.
  • Service Reject Service Reject
  • the terminal device receives the Service Reject message
  • the terminal device will enter 5GMM-REGISTERED .NON-ALLOWED-SERVICE (5GMM registration does not allow service), and wait for the release of N1NAS signaling connection, and wait for the execution of mobility and periodic registration update process.
  • the Service type IE in the SR message is set to "Elevated Signaling”
  • it is an emergency service, high-priority access, or responding to a paging or notification the UE shall not reboot before entering the allowed area or leaving the disallowed area. Initiate the SR process.
  • the terminal device waits for the N1NAS signaling connection to be released before executing the registration update process. Afterwards, according to the new non-allowed area received by the UE, it determines that it is located in the non-allowed area and the signaling to be sent is a signaling of PS data off state change, and the Service Request process will be triggered again, and the Service The Service Type in the Request message is set to "Elevated Signaling" (high priority signaling) to re-establish the connection.
  • the AMF When the AMF receives the Service Request message sent by the terminal device again, according to the Service Type in it is "Elevated Signaling", it will not reject the establishment request of the terminal device, but will send a service acceptance (SERVICE ACCEPT) message to the terminal device to establish connection.
  • SERVICE ACCEPT service acceptance
  • the above process causes the UE and the AMF to repeat the SR process, resulting in redundant signaling processes and prolonging the processing time of signaling for PS data off state changes with higher priority. Moreover, if there is downlink data during the process, this part of the data still needs to be billed, which will waste user traffic.
  • this application proposes the following technical idea: When the terminal device sends the signaling of PS data off state change, uniformly set the Service Type in the Service Request message to "Elevated Signaling", or specify the AMF The service request of the terminal device is no longer rejected, thereby effectively preventing the terminal device and the AMF from repeatedly executing the SR process.
  • FIG. 6 is a flowchart of the communication method provided in the embodiment of the present application.
  • the method includes:
  • the network device may receive the service request message sent by the terminal device, where the service request message may be the Service Request message introduced above.
  • the terminal device may initiate an SR process when there is corresponding signaling or data to be sent, so as to send a service request message to the network device.
  • the terminal device can also initiate the SR process in response to the paging of the network device. This embodiment does not limit the specific circumstances of the terminal device initiating the SR process, which can be selected according to actual needs. Whenever the terminal device initiates the SR process, Both can send service request (Service Request) messages to network devices.
  • the network device in this embodiment may be, for example, an AMF network element, so the terminal device may, for example, send a service request message to the AMF network element.
  • the specific implementation manner of the network device may also be expanded according to actual requirements.
  • the service request message includes a service type (Service Type).
  • the service type can be any one of the first type, the second type, and the third type.
  • the first type is used to indicate that the information to be sent by the terminal device is general signaling, and the first type may be, for example, the signaling described above; and, the second type is used to indicate that the information to be sent by the terminal device is of high priority
  • the second type may be, for example, Elevated Signaling described above
  • the third type is used to indicate that the terminal device is to send user data.
  • the third type may be data, for example.
  • the service type (Service Type) in this embodiment is mainly determined according to what business currently triggers the SR process. For example, if the SR process is triggered to send signaling, the Service Type can be, for example, signaling or Elevated Signaling; If the SR process is triggered to send data, the Service Type may be data, for example. When sending signaling and sending data, the corresponding transmission levels of the two are different.
  • the information to be sent by the terminal device described here is the MM message sent by the terminal device to the AMF or the SM message to be sent to the SMF after the NAS connection is established.
  • the scenario in this embodiment can be that when the terminal device wants to notify the network to activate PS data off, there is just user data to be sent, that is to say, in this case, the Service Type can be set to for data.
  • the specific implementation of the service type in the service request message may depend, for example, on the specific information that the terminal device needs to send, or may also depend on the current location of the terminal device, so this The embodiment does not specifically limit the specific implementation manner of the service type.
  • the service message can also be set and expanded according to the information to be sent by the terminal device. , which is not limited in this embodiment.
  • the NAS connection is used to receive information sent by the terminal device based on the NAS connection, and the information includes first signaling with a high priority.
  • the network device in this embodiment After receiving the service request message, the network device in this embodiment will establish a NAS connection with the terminal device according to the service request message. It can be understood that the network device in this embodiment will not reject the service request of the terminal device, but will establish It is connected to the NAS of the terminal device, so that the terminal device and the network device can effectively avoid repeated execution of the SR process.
  • the terminal device can send information based on the NAS connection.
  • the terminal device can send information to the SMF network element based on the NAS connection, and correspondingly, the SMF The network element can receive the information sent by the terminal device based on the NAS connection.
  • the information sent by the terminal device may include a high-priority first signaling, and the high-priority first signaling in this embodiment may be, for example, the PS data off state change signal introduced in the above embodiment. signaling, or it can be any high-priority signaling. Which signaling the high-priority signaling specifically includes can be selected according to actual needs. It is understandable that any more important signaling that needs to be sent in time Both can be used as high-priority signaling in this embodiment.
  • the communication method provided by the embodiment of the present application includes: receiving a service request message sent by a terminal device, wherein the service type in the service request message is any one of the first type, the second type, and the third type, and the first type It is used to indicate that the information to be sent is general signaling, the second type is used to indicate that the information to be sent is high-priority signaling, and the third type is used to indicate that the information to be sent is user data.
  • a non-access stratum NAS connection is established with the terminal device; wherein, the NAS connection is used to receive information sent by the terminal device based on the NAS connection, and the information includes high-priority signaling.
  • the network device By setting the service type in the service request message to the second type, and/or, the network device always establishes a NAS connection with the terminal device according to the service request message, that is to say, it does not reject the service request of the terminal device, thereby effectively preventing the terminal device from Repeat the SR process with the network device, thereby effectively avoiding the problem that the processing time of the signaling of the PS Data off state change caused by the repeated execution of the SR process is prolonged.
  • the terminal device in this embodiment is in an idle state, so the terminal device needs to establish a connection with the network device. And it can be determined based on the above introduction that the message type is included in the service request message.
  • the service type in the service request message can be determined by the terminal device according to the information to be sent by the terminal device, for example; or The service type in the service request message can also be determined by the terminal device according to the location of the terminal device, or the service type in the service request message can also be determined by the terminal device according to the information to be sent by the terminal device and the location of the terminal device of.
  • the network device is an AMF network element as an example.
  • the implementation methods are similar.
  • the service type in the service request message in this embodiment is determined by the terminal device according to information to be sent by the terminal device.
  • the information to be sent by the terminal device is the first signaling with high priority
  • the service type is the second type.
  • FIG. 7 is a first implementation schematic diagram of determining a service type provided by an embodiment of the present application.
  • the service type in the Service Request message will be (Service Type) is the second type (Elevated Signaling). Based on the above introduction, it can be determined that when the Service Type is the second type (Elevated Signaling), AMF will not reject the service request of the terminal device, so AMF can establish a NAS connection with the terminal device.
  • the terminal equipment in the prior art wants to send the first signaling with high priority, when determining the service type (Service Type) in the service request (Service Request) message, it is based on the current location of the terminal equipment. In what area is determined. Specifically, when the terminal device is in an unallowed area, the Service Type will be set to Elevated Signaling, but when the terminal device is in an allowed area, the Service Type will be set to signaling. It is precisely because of this that the AMF rejects the service request of the terminal device in the special case described above.
  • Service Type Service Type
  • Service Request service request
  • the Service Type is set to Elevated Signaling. In this way, the AMF will not reject the service request of the terminal device, thereby avoiding repeated execution of the SR process by the terminal device and the AMF.
  • the location of the terminal device is an allowed area.
  • the Service Type will be set to Elevated Signaling, so that the AMF will establish a connection with the terminal device. Furthermore, it is avoided that the terminal device and the AMF network element have to repeatedly execute the SR process because the terminal device sets the service type to general signaling in the allowed area, and then the allowed area changes. In this embodiment, when high-priority signaling needs to be sent, directly setting the Service Type to Elevated Signaling can effectively avoid the above problems.
  • the service type in the service request message may also be determined by the terminal device according to the location of the terminal device.
  • the service type in the service request message is the first type or the third type.
  • FIG. 8 is a second implementation schematic diagram of determining a service type provided by an embodiment of the present application.
  • the terminal device can determine whether its location is an allowed area, as shown in Figure 8, if the terminal device determines that its area is an allowed area, the terminal device will set the service type in the service request message as the first type (signalling) or the third type (data), specifically the first type or the third type may depend on whether the information sent by the terminal device is signaling or data.
  • AMF can reject the service request of the terminal device according to the actual situation, which may lead to repeated execution of the SR process, which is the defect in the existing technology .
  • the AMF will not reject the service request of the terminal device, but will establish a NAS connection with the terminal device according to the service request message.
  • the AMF may establish a non-access stratum NAS connection with the terminal device according to the service request message when determining that the first condition is satisfied.
  • the first condition includes:
  • the AMF has initiated paging to the terminal device, and the AMF has signaling to be sent to the terminal device; and/or,
  • the allowed area is updated, the AMF determines that the updated allowed or disallowed area has not been sent to the terminal device, and the location of the terminal device is in the allowed area before the update or not in the unallowed area before the update.
  • the AMF determines that paging has been initiated to the terminal device, and the AMF determines that there is still signaling that needs to be sent to the terminal device, then in this case, Regardless of whether the terminal device is in the allowed area or not allowed area, the AMF will not reject the service request of the terminal device, and will establish a NAS connection with the terminal device. and / or,
  • AMF determines that the allowed area (allowed area) has been updated, but the updated allowed area has not been sent to the terminal device, then in this case, AMF will Allow the area to determine whether to reject the service request of the terminal device.
  • the AMF will not reject the service request of the terminal device, and will establish a NAS connection with the terminal device.
  • the AMF will reject the service request of the terminal device.
  • the terminal device initiates the SR process corresponding to the general signaling in the area that is not allowed. Therefore, the AMF currently It is correct to reject the service request of the terminal equipment.
  • the terminal device determines the service type in the service request message according to its location, and then the AMF can determine whether the current AMF or the terminal device meets the corresponding first condition.
  • the AMF still does not reject the service request of the terminal device, but establishes a NAS connection with the terminal device, thereby avoiding repeated execution of the SR process between the terminal device and the AMF.
  • the service type in the service request message may also be determined by the terminal device according to the information to be sent by the terminal device and the location of the terminal device.
  • the terminal device may set the service type in the service request message to the second type.
  • the current terminal device needs to send PS Data off state change signaling, and the terminal device is currently located in a non-allowed area, then the terminal device can set the Service Type to Elevated Signaling, so that the AMF will not reject the service request of the terminal device.
  • the current situation is similar to that described above and will not be repeated here.
  • the method includes:
  • S901 Send a service request message to the network device, wherein the service type in the service request message is any one of the first type, the second type, and the third type, and the first type is used to indicate that the information to be sent is general
  • the second type of signaling is used to indicate that the information to be sent is high-priority signaling
  • the third type is used to indicate that the information to be sent is user data.
  • the terminal device may send a service request message to the network device, and the implementation manner of the service request message is similar to that described above.
  • the network device in this embodiment will not reject the terminal device, but establishes a NAS connection with the terminal device, so the terminal device can communicate with the AMF Establish a NAS connection. Afterwards, the terminal device can send the high-priority first signaling based on the NAS connection, and the implementation method is similar to that described above, and will not be repeated here.
  • the communication method provided by the embodiment of the present application includes: sending a service request message to a network device, wherein the service type in the service request message is any one of the first type, the second type, and the third type, and the first type uses In order to indicate that the information to be sent is general signaling, the second type is used to indicate that the information to be sent is high-priority signaling, and the third type is used to indicate that the information to be sent is user data.
  • Connect with AMF network device NAS Connect with AMF network device NAS. Wherein, the NAS connection is used for the terminal device to send information, and the information includes the first signaling with high priority.
  • the AMF network element By setting the service type in the service request message to the second type, and/or, the AMF network element always establishes a NAS connection with the terminal device according to the service request message, that is to say, the service request of the terminal device is not rejected, so that the terminal device can be effectively avoided.
  • the device and the network device repeatedly execute the SR process, thereby effectively avoiding the problem that the processing time of the signaling of the PS Data off state change caused by the repeated execution of the SR process is prolonged.
  • the communication method provided by this application can avoid the repeated execution of the SR process by the terminal device and the network device, thereby effectively avoiding the problem that the processing time of the signaling of the PS Data off state change caused by the repeated execution of the SR process is prolonged. In order to save signaling, speed up the transmission of signaling for PS data off state changes, and save traffic.
  • FIG. 10 is a first structural schematic diagram of a communication device provided by an embodiment of the present application.
  • the communication device 100 may include a receiving module 1001 and a connecting module 1002, wherein,
  • the receiving module 1001 is configured to receive a service request message sent by a terminal device, wherein the service type in the service request message is any one of the first type, the second type, and the third type, and the first type uses Indicating that the information to be sent is general signaling (the second type is used to indicate that the information to be sent is high-priority signaling, and the third type is used to indicate that the information to be sent is user data;
  • a connection module 1002 configured to establish a non-access stratum NAS connection with the terminal device according to the service request message
  • the NAS connection is used to receive information sent by the terminal device based on the NAS connection, and the information includes first signaling with a high priority.
  • the terminal device is in an idle state, wherein the service type is determined by the terminal device according to the information to be sent by the terminal device, and/or the location of the terminal device of.
  • the information to be sent by the terminal device is the first high-priority signaling
  • the service type in the service request message is the second type.
  • the location where the terminal device is located is an allowed area.
  • the terminal device determines that its location is an allowed area, and the service type in the service request message is the first type or the third type.
  • connection module 1002 is specifically used for:
  • a non-access stratum NAS connection is established with the terminal device according to the service request message.
  • the first condition includes:
  • the network device has initiated paging to the terminal device, and the network device has signaling to be sent to the terminal device; and/or,
  • the allowed area is updated, the network device determines that the updated allowed area or the updated disallowed area has not been sent to the terminal device, and the location of the terminal device is located in the allowed area before the update or not in the updated area. previous disallowed area.
  • the high-priority first signaling is a signaling notifying a state change of packet-switched data interruption.
  • the network device is an AMF network element.
  • the communication device provided in the embodiment of the present application can execute the technical solutions shown in the above method embodiments, and its implementation principles and beneficial effects are similar, and will not be repeated here.
  • FIG. 11 is a second structural schematic diagram of a communication device provided by an embodiment of the present application.
  • the communication device 110 may include a sending module 1101 and a connecting module 1102, wherein,
  • a sending module 1101 configured to send a service request message to a network device, wherein the service type in the service request message is any one of the first type, the second type, and the third type, and the first type is used for indicating that the information to be sent is general signaling, the second type is used to indicate that the information to be sent is high-priority signaling, and the third type is used to indicate that the information to be sent is user data;
  • the connection module 1102 is configured to establish a NAS connection with the network device; wherein the NAS connection is used for the terminal device to send information, and the information includes first signaling with a high priority.
  • the terminal device is in an idle state, wherein the service type in the service request message is information to be sent by the terminal device according to the terminal device, and/or, the terminal The location of the device is determined.
  • the information to be sent by the terminal device is the first high-priority signaling
  • the service type in the service request message is the second type.
  • the location where the terminal device is located is an allowed area.
  • the terminal device determines that its location is an allowed area, and the service type in the service request message is the first type or the third type.
  • connection module 1102 is specifically used for:
  • the first condition includes:
  • the network device has initiated paging to the terminal device, and the network device has signaling to be sent to the terminal device; and/or,
  • the allowed area is updated, the terminal device has not received the updated allowed area or the updated disallowed area, and the location of the terminal device is located in the pre-updated allowed area or not in the pre-updated disallowed area .
  • the high-priority first signaling is a signaling notifying a state change of packet-switched data interruption.
  • the network device is an AMF network element.
  • the communication device provided in the embodiment of the present application can execute the technical solutions shown in the above method embodiments, and its implementation principles and beneficial effects are similar, and will not be repeated here.
  • FIG. 12 is a schematic structural diagram of a terminal device provided by an embodiment of the present application.
  • the terminal device 120 may include: a transceiver 21 , a memory 22 , and a processor 23 .
  • the transceiver 21 may include: a transmitter and/or a receiver.
  • the transmitter may also be called a transmitter, a transmitter, a sending port, or a sending interface, and similar descriptions
  • the receiver may also be called a receiver, a receiver, a receiving port, or a receiving interface, or similar descriptions.
  • the transceiver 21 , the memory 22 , and the processor 23 are connected to each other through a bus 24 .
  • the memory 22 is used to store program instructions
  • the processor 23 is configured to execute the program instructions stored in the memory, so as to enable the terminal device 120 to execute any communication method shown above.
  • the receiver of the transceiver 21 can be used to perform the receiving function of the terminal device in the above communication method.
  • FIG. 13 is a schematic structural diagram of a network device provided by an embodiment of the present application.
  • the network device 130 may include: a transceiver 31 , a memory 32 , and a processor 33 .
  • the transceiver 31 may include: a transmitter and/or a receiver.
  • the transmitter may also be called a transmitter, a transmitter, a sending port, or a sending interface, and similar descriptions
  • the receiver may also be called a receiver, a receiver, a receiving port, or a receiving interface, or similar descriptions.
  • the transceiver 31 , the memory 32 , and the processor 33 are connected to each other through a bus 34 .
  • the memory 32 is used to store program instructions
  • the processor 33 is configured to execute the program instructions stored in the memory, so as to enable the network device 130 to execute any one of the communication methods shown above.
  • the receiver of the transceiver 31 can be used to perform the receiving function of the network device in the above communication method.
  • An embodiment of the present application provides a computer-readable storage medium, where computer-executable instructions are stored in the computer-readable storage medium, and when the computer-executable instructions are executed by a processor, the foregoing communication method is implemented.
  • An embodiment of the present application provides a computer-readable storage medium, where computer-executable instructions are stored in the computer-readable storage medium, and when the computer-executable instructions are executed by a processor, the foregoing communication method is implemented.
  • An embodiment of the present application may further provide a computer program product, which may be executed by a processor, and when the computer program product is executed, any communication method performed by the terminal device or network device shown above may be implemented.
  • the communication device, computer-readable storage medium, and computer program product of the embodiments of the present application can execute the communication method performed by the above-mentioned terminal device and network device.
  • the specific implementation process and beneficial effects refer to the above, and will not be repeated here.
  • the disclosed system, device and method can be implemented in other ways.
  • the device embodiments described above are only illustrative.
  • the division of the units is only a logical function division. In actual implementation, there may be other division methods.
  • multiple units or components can be combined or May be integrated into another system, or some features may be ignored, or not implemented.
  • the mutual coupling or direct coupling or communication connection shown or discussed may be through some interfaces, and the indirect coupling or communication connection of devices or units may be in electrical, mechanical or other forms.
  • each functional unit in each embodiment of the present application may be integrated into one processing unit, each unit may exist separately physically, or two or more units may be integrated into one unit.
  • the above-mentioned integrated units can be implemented in the form of hardware or in the form of software functional units.
  • the aforementioned computer program can be stored in a computer-readable storage medium.
  • the computer program When the computer program is executed by the processor, it implements the steps of the above-mentioned method embodiments; and the aforementioned storage medium includes: ROM, RAM, magnetic disk or optical disk and other various media that can store program codes.

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Abstract

本申请实施例提供一种通信方法及装置，该方法包括：接收终端设备发送的服务请求消息，其中，服务请求消息中的服务类型为第一类型、第二类型、第三类型中的任一种，第一类型用于指示待发送的信息为一般的信令、第二类型用于指示待发送的信息为高优先级的信令，第三类型用于指示待发送的信息为用户数据。根据服务请求消息，与终端设备建立NAS连接；其中，NAS连接用于接收终端设备基于NAS连接发送的信息，信息包括高优先级的信令。通过网络设备根据服务请求消息，始终与终端设备建立NAS连接，从而可以避免重复执行SR过程所导致的PS Data off状态改变的信令的处理时间被延长的问题。

Description

通信方法及装置 技术领域
本申请涉及通信领域，尤其涉及一种通信方法及装置。
背景技术
分组交换数据中断(Packet Switching Data off,PS Data off)的状态改变信令可以向网络设备告知终端设备的PS Data off状态发生变化。
在目前的实现方式中，终端设备在空闲态想要发送PS Data off状态改变信令时，可以首先向接入和移动性管理功能(Access and Mobility Management Function，AMF)网元发起SR流程，但是如果在终端设备发起SR流程之后，网络设备的非允许区域发生了变化，则AMF可能会拒绝该连接请求，则之后终端设备需要再次发起SR流程。
因此现有技术中的实现方案会导致终端设备和AMF重复执行SR流程，从而导致PS Data off状态改变的信令的处理时间被延长。
发明内容
本申请实施例提供一种通信方法及装置，以避免终端设备和AMF重复执行SR流程，所导致的PS Data off状态改变的信令的处理时间被延长的问题。
第一方面，本申请实施例提供一种通信方法，应用于网络设备，包括：
接收终端设备发送的服务请求消息，其中，所述服务请求消息中的服务类型为第一类型、第二类型、第三类型中的任一种，所述第一类型用于指示待发送的信息为一般的信令(、所述第二类型用于指示待发送的信息为高优先级的信令，所述第三类型用于指示待发送的信息为用户数据；
根据所述服务请求消息，与所述终端设备建立非接入层NAS连接；
其中，所述NAS连接用于接收所述终端设备基于所述NAS连接发送的信息，所述信息包括高优先级的第一信令。
第二方面，本申请实施例提供一种通信方法，应用于终端设备，包括：
向网络设备发送服务请求消息，其中，所述服务请求消息中的服务类型为第一类型、第二类型、第三类型中的任一种，所述第一类型用于指示待发送的信息为一般的信令、所述第二类型用于指示待发送的信息为高优先级的信令，所述第三类型用于指示待发送的信息为用户数据；
与所述网络设备建立NAS连接；
其中，所述NAS连接用于所述终端设备发送信息，所述信息包括高优先级的第一信令。
第三方面，本申请实施例提供一种通信装置，应用于网络设备，包括：
接收模块，用于接收终端设备发送的服务请求消息，其中，所述服务请求消息中的服务类型为第一类型、第二类型、第三类型中的任一种，所述第一类型用于指示待发送的信息为一般的信令(、所述第二类型用于指示待发送的信息为高优先级的信令，所述第三类型用于指示待发送的信息为用户数据；
连接模块，用于根据所述服务请求消息，与所述终端设备建立NAS连接；
其中，所述NAS连接用于接收所述终端设备基于所述NAS连接发送的信息，所述信息包括高优先级的信令。
第四方面，本申请实施例提供一种通信装置，应用于终端设备，包括：
发送模块，用于向网络设备发送服务请求消息，其中，所述服务请求消息中的服务类型为第一类型、第二类型、第三类型中的任一种，所述第一类型用于指示待发送的信息为一般的信令、所述第二类型用于指示待发送的信息为高优先级的信令，所述第三类型用于指示待发送的信息为用户数据；
连接模块，用于与所述网络设备建立NAS连接；
其中，所述NAS连接用于所述终端设备发送信息，其中，所述信息包括高优先级的信令。
第五方面，本申请实施例提供一种网络设备，包括：收发器、处理器、存储器；
所述存储器存储计算机执行指令；
所述处理器执行所述存储器存储的计算机执行指令，使得所述处理器执行如上第一方面所述的通信方法。
第六方面，本申请实施例提供一种终端设备，包括：收发器、处理器、存储器；
所述存储器存储计算机执行指令；
所述处理器执行所述存储器存储的计算机执行指令，使得所述处理器执行如上第二方面所述的通信方法。
第七方面，本申请实施例提供一种计算机可读存储介质，所述计算机可读存储介质中存储有计算机执行指令，当所述计算机执行指令被处理器执行时用于实现如上第一方面或者如上第二方面所述的通信方法。
第八方面，本申请实施例提供一种计算机程序产品，包括计算机程序，其特征在于，所述计算机程序被处理器执行时实现如上第一方面或者如上第二方面所述的通信方法。
本申请实施例提供一种通信方法及装置，该方法包括：接收终端设备发送的服务请求消息，其中，服务请求消息中的服务类型为第一类型、第二类型、第三类型中的任一种，第一类型用于指示待发送的信息为一般的信令、第二类型用于指示待发送的信息为高优先级的信令，第三类型用于指示待发送的信息为用户数据。根据服务请求消息，与终端设备建立非接入层NAS连接；其中，NAS连接用于接收终端设备基于NAS连接发送的信息，信息包括高优先级的信令。通过设置服务请求消息中的服务类型为第二类型，和/或，网络设备根据服务请求消息，始终与终端设备建立NAS连接，也就是说不拒绝终端设备的业务请求，从而可以有效避免终端设备和网络设备重复执行SR过程，进而有效避免重复执行SR过程所导致的PS Data off状态改变的信令的处理时间被延长的问题。
附图说明
图1为本申请实施例提供的通信场景的示意图；
图2为5G网络架构的一种示意图；
图3为非漫游场景下基于服务化接口的5G网络架构的示意图；
图4为本申请实施例提供的不允许区域的示意图；
图5为本申请实施例提供的重复执行SR流程的实现示意图；
图6为本申请实施例提供的通信方法的流程图；
图7为本申请实施例提供的确定服务类型的实现示意图一；
图8为本申请实施例提供的确定服务类型的实现示意图二；
图9为本申请实施例提供的通信方法的流程示意图二；
图10为本申请实施例提供的通信装置的结构示意图一；
图11为本申请实施例提供的通信装置的结构示意图二；
图12为本申请实施例提供的终端设备的结构示意图；
图13为本申请实施例提供的网络设备的结构示意图。
具体实施方式
为了便于理解，首先对本申请涉及的概念进行解释说明。
终端设备：可以为包含无线收发功能、且可以与网络设备配合为用户提供通讯服务的设备。具体地，终端设备可以指用户设备(User Equipment，UE)、接入终端设备、用户单元、用户站、移动站、移动台、远方站、远程终端设备、移动设备、用户终端设备、终端设备、无线通信设备、用户代理或用户装置。例如，终端设备可以是蜂窝电话、无绳电话、会话启动协议(Session Initiation Protocol，SIP)电话、无线本地环路(Wireless Local Loop，WLL)站、个人数字处理(Personal Digital Assistant，PDA)、具有无线通信功能的手持设备、计算设备或连接到无线调制解调器的其它处理设备、车载设备、可穿戴设备，未来5G网络或5G之后的网络中的终端设备等。
网络设备：网络设备可以是用于与终端设备进行通信的设备，例如，可以是全球移动通信系统(Global System for Mobile Communication，GSM)或码分多址(Code Division Mult iple Access，CDMA)通信系统中的基站(Base Transceiver Station，BTS)，也可以是宽带码分多址(Wideband Code Division Multiple Access，WCDMA)系统中的基站(NodeB，NB)，还可以是LTE系统中的演进型基站(Evolutional Node B，eNB或eNodeB)，或者该网络设备可以为中继站、接入点、车载设备、可穿戴设备以及未来5G网络或5G之后的网络中的网络侧设备或未来演进的公共陆地移动网络(Public Land Mobile Network，PLMN)网络中的网络设备等。
本申请实施例中涉及的网络设备也可称为无线接入网(Radio Access Network，RAN)设备。RAN设备与终端设备连接，用于接收终端设备的数据并发送给核心网设备。RAN设备在不同通信系统中对应不同的设备，例如，在2G系统中对应基站与基站控制器，在3G系统中对应基站与无线网络控制器(Radio Network Controller，RNC)，在4G系统中对应演进型基站(Evolutional Node B，eNB)，在5G系统中对应5G系统，如新无线(New Radio，NR)中的接入网设备(例如gNB，集中单元CU，分布式单元DU)。
下面，结合图1，对本申请中的通信方法所适用的场景进行说明。
图1为本申请实施例提供的通信场景的示意图。请参见图1，包括网络设备101和终端设备102，网络设备101和终端设备102之间可以进行无线通信，其中，终端设备102可以经无线接入网(Radio Access Network，RAN)与至少一个核心网进行通信。
其中，该通信系统可以为全球移动通讯(Global System of Mobile communication，简称GSM)系统、码分多址(Code Division Multiple Access，简称CDMA)系统、宽带码分多址(Wideband Code Division Multiple Access，简称WCDMA)系统、长期演进(Long Term Evolution，简称LTE)系统或第五代移动通信(5th-Generation，简称5G)系统。
相应的，该网络设备可以为GSM系统或CDMA系统中的基站(Base Transceiver Station，简称BTS)，也可以是WCDMA系统中的基站(NodeB，简称NB)，还可以是LTE系统中的演进型基站(evolved NodeB，简称eNB)、接入点(access point，AP)或者中继站，也可以是5G系统中的基站等，在此不作限定。
本申请所述的5G移动通信系统包括非独立组网(non-standalone，NSA)的5G移动通信系统和/或独立组网(standalone，SA)的5G移动通信系统。本申请提供的技术方案还可以应用于未来的通信系统，如第六代移动通信系统。通信系统还可以是PLMN网络、设备到设备(device-to-device，D2D)网络、机器到机器(machine to machine，M2M)网络、IoT网络或者其他网络。
可以理解的是，若本申请实施例的技术方案应用于其他无线通信网络中，相应的名称也可以用其他无线通信网络中的对应功能的名称进行替代。
本申请实施例描述的网络架构以及业务场景是为了更加清楚的说明本申请实施例的技术方案，并不构成对于本申请实施例提供的技术方案的限定，本领域普通技术人员可知，随着网络架构的演变和新业务场景的出现，本申请实施例提供的技术方案对于类似的技术问题，同样适用。
以及本申请提供的通信方法可以应用在5G系统中，也可以应用在演进的分组系统(Evolved Packet System，EPS)中。在对应的网络架构中可以包括UE、接入网(access network，AN)、核心网和数据网络(Data Network，DN)。
其中，接入网装置主要用于实现无线物理层功能、资源调度和无线资源管理、无线接入控制以及移动性管理等功能；核心网设备可以包含管理设备和网关设备，管理设备主要用于终端设备的设备注册、安全认证、移动性管理和位置管理等，网关设备主要用于与终端设备间建立通道，在该通道上转发终端设备和外部数据网络之间的数据包；数据网络可以包含网络设备(如：服务器、路由器等设备)，数据网络主要用于为终端设备提供多种数据业务服务。
该网络架构可以为5G网络架构，图2为5G网络架构的一种示意图，5G系统也称为新无线通信系统、新接入技术(New Radio，NR)或者下一代移动通信系统。
如图2所示，5G系统中的接入网可以是无线接入网(radio access network，(R)AN)，5G系统中的(R)AN设备可以由多个5G-(R)AN节点组成，该5G-(R)AN节点可以包括：非3GPP的接入网络如WiFi网络的接入点(access point，AP)、下一代基站(可统称为新一代无线接入网节点(NG-RAN node)，其中，下一代基站包括新空口基站(NR nodeB，gNB)、新一代演进型基站(NG-eNB)、中心单元(central unit，CU)和分布式单元(distributed unit，DU)分离形态的gNB等)、收发点(transmission receive point，TRP)、传输点(transmission point，TP)或其它节点。
如图2所示，5G核心网(5G core/new generation core，5GC/NGC)包括接入和移动性管理功能(Access and Mobility Management Function，AMF)网元、会话管理功能(Session Management Function，SMF)网元、用户面功能(User Plane Function，UPF)网元、鉴权服务器功能(Authentication Server Function，AUSF)网元、策略控制功能(Policy Control Function，PCF)网元、应用功能(Application Function，AF)网元、统一数据管理功能(unified data management，UDM)网元、网络切片选择功能(Network Slice Selection Function，NSSF)网元等多个功能单元。
AMF网元主要负责移动性管理、接入管理等服务，其中，AMF网元还可以为UE和位置管理功能(Location management function，LMF)网元之间，以及RAN和LMF网元之间的定位服务消息提供传输。
SMF网元主要负责会话管理、UE地址管理和分配、动态主机配置协议功能、用户面功能的选择和控制等。UPF主要负责对外连接到数据网络(data network，DN)以及用户面的数据包路由转发、报文过滤、执行服务质量(quality of service，QoS)控制相关功能等。AUSF主要负责对终端设备的认证功能等。PCF网元主要负责为网络行为管理提供统一的策略框架、提供控制面功能的策略规则、获取与策略决策相关的注册信息等。需要说明的是，这些功能单元可以独立工作，也可以组合在一起实现某 些控制功能，如对终端设备的接入鉴权、安全加密、位置注册等接入控制和移动性管理功能，以及用户面传输路径的建立、释放和更改等会话管理功能。
5GC中各功能单元之间可以通过下一代网络(next generation，NG)接口进行通信，如：UE可以通过NG接口1(简称N1)与AMF网元进行控制面消息的传输，RAN设备可以通过NG接口3(简称N3)与UPF建立用户面数据传输通道，AN/RAN设备可以通过NG接口2(简称N2)与AMF网元建立控制面信令连接，UPF可以通过NG接口4(简称N4)与SMF网元进行信息交互，UPF可以通过NG接口6(简称N6)与数据网络DN交互用户面数据，AMF网元可以通过NG接口11(简称N11)与SMF网元进行信息交互，SMF网元可以通过NG接口7(简称N7)与PCF网元进行信息交互，AMF网元可以通过NG接口12(简称N12)与AUSF进行信息交互。需要说明的是，图2仅为示例性架构图，除图2中所示功能单元之外，该网络架构还可以包括其他功能单元。
图2所示网络架构为基于参考点网络架构，且该网络架构为非漫游场景下的网络架构，当然本申请的方法也可以应用在漫游场景下，并且网络架构也不限于基于参考点的网络架构，也可以采用基于服务化接口的网络架构。
图3为非漫游场景下基于服务化接口的5G网络架构的示意图，如图3所示，基于服务化接口场景下，5G系统的核心网还包括NEF和NRF网元。基于服务化接口的场景下，5G核心网中的部分网元通过总线方式连接，如图3所示，AUSF网元、AMF网元、SMF网元、AF网元、UDM、PCF网元、网络存储功能(Network Repository Function，NRF)网元、网络开放功能(Network Exposure Function，NEF)网元和NSSF网元通过总线互连，所述网元在通过总线互连时，采用服务化接口，例如，AUSF网元通过Nausf接口连接到总线上，AMF网元采用Namf接口连接到总线上，SMF网元通过Nsmf接口连接到总线上，AF网元采用NAF网元接口连接到总线上，UDM采用Nudm接口连接到总线上，PCF网元通过NPCF网元接口连接到总线上，NRF通过Nnrf接口连接到总线上，NEF通过Nnef接口连接到总线上，NSSF通过Nnssf接口连接到总线上。
上述介绍的本申请实施例描述的网络架构以及业务场景是为了更加清楚的说明本申请实施例的技术方案，并不构成对于本申请实施例提供的技术方案的限定，本领域普通技术人员可知，随着网络架构的演变和新业务场景的出现，本申请实施例提供的技术方案对于类似的技术问题，同样适用。
在上述介绍内容的基础上，下面对本申请的相关技术背景进行说明：
根据第三代合作伙伴计划(3rd Generation Partnership Project，3GPP)规范22.011第10章，对3GPP PS Data off豁免业务的规定。当用户激活3GPP PS Data off时，网络应停止针对数据流量的相关计费动作，只允许用户使用运营商规定的相关服务。
其中，PS Data off是分组交换数据中断，其中的PS是指(packet switch，分组交换)，上述介绍的用户激活3GPP PS Data off，可以理解为用户关闭终端设备的数据流量。通俗一点的讲，上述介绍的过程可以理解为，当终端设备的数据流量被关闭的时候，终端设备可以告知网络设备数据流量的关闭，之后网络设备需要停止数据流量的计费，只允许用户使用规定服务，比如说打电话，发短信等等。
以及相应的，当用户去激活3GPP PS Data off的时候，可以理解为用户打开了终端设备的数据流量，此时网络就需要再开始对数据流量的相关计费动作，以及允许用户使用相关的网络服务，那么可以理解的是，无论是PS Data off的激活还是去激活，终端设备都需要及时的告知网络设备。
针对这一特性，那么传送PS Data off的状态改变的信令显得尤为重要，这一点从3GPP规范24.501对PS Data off的状态指示的相关信令的以下处理也可以看得出来。
1、当终端设备的位置处于网络设备规定的不允许区域(non-allowed Area，包含多个TA)时，一般的业务请求将不允许发送，但终端设备可以发送PS Data off状态改变的信令。
2、当网络拥塞发生时，一般的信令和数据请求将不允许发送，但终端设备可以发送PS Data off状态改变的信令
3、当网络设备指示终端设备需要做网络切片相关的鉴权并且没有分配任何允许的网络切片时，正常的数据业务请求将不允许发送，但终端设备可以发送PS data off状态改变的信令。
4、当终端设备处于本地区域数据网络(Local Area Data Network，LADN)区域之外时，与这个LADN会话相关的数据和信令将不允许被发送，但如果该LADN会话相关的PS data off状态改变的信令允许被发送。
因此基于上述介绍可以理解的是，PS data off状态改变的信令是非常高优先级的信令。
此处对上述介绍的不允许区域(non-allowed Area)进行说明，例如网络设备可以配置服务区限制(Service Area Restrictions)，其中定义了哪些区域下终端设备可以和网络设备通信、哪些区域下终端设备不能和网络设备发起通信；其具体又分为允许区域(allowed Area)和不允许区域(non-allowed Area)
其中，在允许区域(allowed Area)，终端设备允许和网络设备进行正常的业务通信。
在不允许区域(non-allowed Area)，终端设备和网络设备都不允许发起Service Request(服务请求)或会话管理(SM，Session Management)信令去获取用户业务；终端设备不能因为进入不允许区域而触发网络选择或者小区重选；终端设备处于CM-CONNECTED和RRC-Inactive状态时，其无线资源控制(Radio Resource Control，RRC)流程和在允许区域的一样；RM流程也和在允许区域的一样；如果网络设备寻呼时，终端设备也要发起Service-Request响应网络的寻呼。简而言之就是不允许区域下，终端设备可以像在允许区域下一样驻留，但不能做业务(比如打电话、上网等)。
上述的CM是指(连接管理，Connection Management)，CONNECTED是指已连接状态，Inactive是指不活跃状态。
在上述介绍内容的基础上，下面对TA进行介绍，其中，跟踪区(Tracking Area)是为UE的位置管理新设立的概念。当UE处于空闲状态时，核心网络能够知道UE所在的跟踪区，同时当处于空闲状态的UE需要被寻呼时，在UE所注册的跟踪区的所有小区进行寻呼。
其中，TAI是跟踪区标识(Tracking Area Identity)，是由公共陆地移动网(Public Land Mobile Network，PLMN)标识和跟踪区域编码(Tracking Area Code，TAC)组成。也就是TAI＝PLMN ID+TAC。
其中，多个TA可以组成一个TA列表(TA list)，同时分配给一个UE，UE在该TA列表内移动时不需要执行TA更新，以减少与网络的频繁交互；
当UE进入不在其所注册的TA列表中的新TA区域时，需要执行TA更新，移动管理实体(Mobility Management Entity，MME)或AMF给UE重新分配一组TA，新分配的TA也可包含原有TA列表中的一些TA。
其中，TA是小区级的配置，多个小区可以配置相同的TA，且一个小区只能属于一个TA。
目前，在一个服务区限制(Service Area Restrictions)中包含一个或多个(最多16个)完整的跟踪区(TAs)。例如在UDM上的UE签约数据会包含一个服务区限制，其可以包含一个允许区和/或一个不允许区，这些受限区域可以使用TAI和/或其他的 地理信息(如经纬度、邮编等)来标识。在发给UE时网络设备会先将这些区域映射到一个TA列表然后再发给UE。如果一个UE接入在服务不允许区，那么该UE的注册区所包含的TA一定是属于该UE的不允许区里的；如果UE接入在服务允许区，那么该UE的注册区所包含的TA一定是属于该UE的允许区里的。
UDM将UE的服务受限区信息当UE的签约数据的一部分存储着，服务网络的PCF可以其网络策略进一步调整UE的服务受限区；在注册流程中，如果AMF还没有存有UE的服务受限区数据，则其会从UDM处获取用户的服务受限区数据；服务AMF会强制执行UE的服务区受限功能。
例如可以参照图4进行理解，图4为本申请实施例提供的不允许区域的示意图。
如图4所示，假设当前的服务区限制(Service Area Restrictions)中包含5个TA，分别是TAI1、TAI2、TAI3、TAI4、TAI5，其中，TAI1、TAI2、TAI3可以映射到TA列表1，TAI1、TAI4、TAI5可以映射到TA列表2。以及，其中的TA11、TAI2、TAI5例如可以为允许区域，则相应的TA14、TAI3就为不允许区域。
在一种可能的实现方式中，在REGISTRATION ACCEPT(注册接受)消息可以包括Service area list。其中，Service area list中包括的可以为允许区域，若Service area list中列出allowed area为TAI1、TAI2和TAI5，则TAI3和TAI4可能为不允许域，也就是如上图4所示。或者，若REGISTRATION ACCEPT消息中没有Service area list，则TAI1～TAI5都为允许区域。
在上述介绍内容的基础上，下面对PS data off状态指示的信令的传输进行介绍。首先，5G非接入层(Non Access Stratum，NAS)协议中包括5GMM和5GSM，其中，MM是指(Mobility Management，移动管理)，SM是指(Session Management，会话管理)。
根据3GPP对于PS data off豁免业务的规定，PS data off状态指示的信令是设置在会话管理层5GSM的消息的“Extended protocol configuration options”(扩展协议配置选项)参数中的，终端设备侧的会话管理层5GSM的消息只有网络侧对应的SMF网元才能解析。
但是移动管理层5GMM也有一些限制，而移动管理层5GMM对应的网络侧网元AMF需要对这些限制做检查,例如当终端设备位于non-allowed区域时，AMF收到该终端设备的一般业务请求时就会以UE位于限制区域的原因来拒绝终端设备的业务请求。
当终端设备位于non-allowed区域且处于空闲态时，要发送PS data off状态改变的信令时，终端设备需要先进入连接态，然后才能发送PDU session modification request(PDU会话修改请求)给SMF。
终端设备要进入连接态的话，需要发送Service Request(服务请求)消息给AMF，其中的Service Type IE(服务类型)设为“Elevated Signalling”(高优先级的信令),AMF在收到这样的信令时，根据“Elevated Signalling”，即使终端设备位于non-allowed区域时，也不会拒绝终端设备的业务请求而是帮助其完成链接的建立，使终端设备能够发送PS data off状态改变信令。
然而，当前存在一种特殊的情况，例如可以参照图5进行理解，图5为本申请实施例提供的重复执行SR流程的实现示意图。
参见图5，终端设备可以发送服务请求(Service Request)消息，该服务请求消息中的服务类型(Service Type)被设为“signalling”(一般信令)。
具体的，当终端设备想要发送一个PS data off状态改变的信令时，该终端设备判断自己在空闲态并且不在non-allowed area里，然后发起SR流程以建立NAS连接。因为终端设备认为其当前不在non-allowed area里，因此终端设备发送的服务请求(Service Request)消息中的服务类型(Service Type)就被设为“signalling”(一 般信令)。
若此时碰巧，AMF侧的non-allowed area(不允许区域)发生改变，则参照图5，AMF可以向终端设备发送寻呼(paging)，以通知其non-allowed area发生改变的情况。
这时，UE会忽略该寻呼，继续已经发起的SR流程。具体的，当UE正在执行发起的SR过程的时候，如果UE接收到寻呼消息时，那么UE将继续执行SR过程。如果说对于SR过程来说，当前的SR过程发起的连接被禁止，那么UE会处理待处理的寻呼消息，否则的话，UE会忽略该寻呼。
基于上述介绍可以确定的是，终端设备向AMF发送了Service Request消息，AMF在收到终端的Service Request消息之后，可以确定Service Request消息中的Service type IE＝singalling，而不是Mobile terminated(MT，移动台被呼)，判断该SR不是响应之前的寻呼，但是会继续处理该SR流程。
可以理解的是，如果UE是响应于AMF的寻呼而发起SR流程的话，那么Service Request消息中的Service type IE就等于Mobile terminated。
其中AMF继续处理该SR流程，参照图5，AMF可以向UE发送配置更新命令(Configuration Update Command)，其中，配置更新命令用于更新不允许区域列表，或者等SR流程执行完成后再发送配置更新命令。
如果终端设备恰好位于新的non-allowed area中，也就是终端设备所在的位置之前是allowed area，但是现在变为了non-allowed area，因为此时Service Request消息中的Service type IE＝singalling，参照图5，所以AMF就会拒绝该终端设备的业务请求。
参照图5，AMF可以向终端设备发送服务拒绝(Service Reject)消息，当终端设备收到Service Reject消息时，如果SR消息中的Service type IE不是“Elevated Signalling”，则终端设备会进入5GMM-REGISTERED.NON-ALLOWED-SERVICE(5GMM注册不允许服务)的状态，并等待N1NAS信令连接的释放，以及等待执行移动性和周期性注册更新过程。如果SR消息中的Service type IE设置为“Elevated Signalling”，那么除非是紧急服务、高优先级接入或响应寻呼或通知，否则在UE进入允许区域或离开不允许区域之前，UE不应重新发起SR过程。
因此终端设备等待N1NAS信令连接被释放后执行注册更新流程。之后，UE根据其收到的新的non-allowed area，判定其位于non-allowed area内并且要发送的信令是PS data off状态改变的信令，则会再次触发Service Request过程，并将Service Request消息中的Service Type设为“Elevated Signalling”(高优先级信令)来重新建立连接。
当AMF再次接收到终端设备发送的Service Request消息时，根据其中的Service Type为“Elevated Signalling”，就不会拒绝终端设备的建立请求，而是向终端设备发送服务接受(SERVICE ACCEPT)消息，以建立连接。
基于上述介绍可以确定的是，上述过程导致了UE和AMF重复进行了SR过程，从而导致多余的信令过程，并延长了优先级较高的PS data off状态改变的信令的处理时间。而且，如果在过程中有下行数据，这部分数据仍要计费，会用户流量的浪费。
针对现有技术中的技术问题，本申请提出了如下技术构思：在终端设备发送PS data off状态改变的信令时，统一将Service Request消息中的Service Type设为“Elevated Signalling”，或者指定AMF不再拒绝终端设备的业务请求，从而可以有效避免终端设备和AMF重复执行SR过程。
在上述介绍内容的基础上，下面结合图6对本申请提供的通信方法进行详细介绍，图6为本申请实施例提供的通信方法的流程图。
如图6所示，该方法包括：
S601、接收终端设备发送的服务请求消息，其中，服务请求消息中的服务类型为第一类型、第二类型、第三类型中的任一种，第一类型用于指示待发送的信息为一般的信令、第二类型用于指示待发送的信息为高优先级的信令，第三类型用于指示待发送的信息为用户数据。
在本实施例中，网络设备可以接收终端设备发送的服务请求消息，其中服务请求消息可以为上述介绍的Service Request消息。在一种可能的实现方式中，终端设备例如可以在有相应的信令或者数据需要发送的时候，发起SR过程，从而向网络设备发送服务请求消息。或者，终端设备还可以是响应于网络设备的寻呼从而发起SR过程，本实施例对终端设备发起SR过程的具体情况不做限制，其可以根据实际需求进行选择，凡是终端设备发起SR过程，都可以向网络设备发送服务请求(Service Request)消息。
在一种可能的实现方式中，本实施例中的网络设备例如可以为AMF网元，因此终端设备例如可以可以向AMF网元发送服务请求消息。或者在其余可能的实现方式中，网络设备的具体实现方式还可以根据实际需求进行扩展。
基于上述介绍可以确定的是，在服务请求消息中包括服务类型(Service Type)，在本实施例中，服务类型可以为第一类型、第二类型、第三类型中的任一种。
其中，第一类型用于指示终端设备待发送的信息为一般的信令，第一类型例如可以为上述介绍的signalling；以及，第二类型用于指示终端设备待发送的信息为高优先级的信息，第二类型例如可以为上述介绍的Elevated Signalling；以及，第三类型用于指示终端设备待发送用户数据。第三类型例如可以为data。
可以理解，本实施例中的服务类型(Service Type)主要是根据当前是什么业务触发SR过程决定的，比如说如果触发SR过程是为了发送信令，则Service Type例如可以为signalling或者Elevated Signalling；如果触发SR过程是为了发送数据，则Service Type例如可以为data。在发送信令和发送数据时，这两者对应的传输层面是不同的。
以及需要说明的是，以网络设备是AMF网元为例，此处介绍的终端设备待发送的信息，是终端设备发给AMF的MM信息或者在建立NAS连接之后待发送给SMF的SM信息。以及当第三类型为data时，本实施例中的场景可以为在终端设备要通知网络去激活PS data off时，正好存在用户数据需要发送，也就是说在这种情况下可以将Service Type设置为data。
在一种可能的实现方式中，在服务请求消息中的服务类型的具体实现，例如可以取决于终端设备需要发送的信息具体是什么信息，或者还可以取决于终端设备当前所在的位置，因此本实施例对服务类型的具体实现方式不做特别限制。
以及在实际实现过程中，服务消息除了可以为上述介绍的第一类型、第二类型、第三类型之外，其具体的实现还例如可以根据终端设备的待发送的信息进行相应的设置和扩展，本实施例对此不做限制。
S602、根据服务请求消息，与终端设备建立非接入层NAS连接；其中，NAS连接用于接收终端设备基于NAS连接发送的信息，信息包括高优先级的第一信令。
本实施例中的网络设备在接收到服务请求消息之后，会根据服务请求消息与终端设备建立NAS连接，可以理解的是，本实施例中的网络设备不会拒绝终端设备的业务请求，会建立与终端设备的NAS连接，从而可以有效避免终端设备和网络设备重复执行SR过程。
在网络设备和终端设备建立NAS连接之后，终端设备就可以基于NAS连接发送信息了，在一种可能的实现方式中，终端设备例如可以基于NAS连接向SMF网元发送信 息，则相应的，SMF网元就可以接收终端设备基于NAS连接发送的信息。在本实施例中，终端设备发送的信息可以包括高优先级的第一信令，本实施例中的高优先级的第一信令例如可以为上述实施例介绍的PS data off状态改变的信令，或者还可以为任意的高优先级的信令，其中高优先级的信令具体包括哪些信令，可以根据实际需求进行选择，可以理解的是，凡是需要及时发送的较为重要的信令均可以作为本实施例中的高优先级的信令。
本申请实施例提供的通信方法，包括：接收终端设备发送的服务请求消息，其中，服务请求消息中的服务类型为第一类型、第二类型、第三类型中的任一种，第一类型用于指示待发送的信息为一般的信令、第二类型用于指示待发送的信息为高优先级的信令，第三类型用于指示待发送的信息为用户数据。根据服务请求消息，与终端设备建立非接入层NAS连接；其中，NAS连接用于接收终端设备基于NAS连接发送的信息，信息包括高优先级的信令。通过设置服务请求消息中的服务类型为第二类型，和/或，网络设备根据服务请求消息，始终与终端设备建立NAS连接，也就是说不拒绝终端设备的业务请求，从而可以有效避免终端设备和网络设备重复执行SR过程，进而有效避免重复执行SR过程所导致的PS Data off状态改变的信令的处理时间被延长的问题。
在上述实施例的基础上，可以理解的是，本实施例中的终端设备是处于空闲态的，因此终端设备才需要和网络设备建立连接。以及基于上述介绍可以确定的是，在服务请求消息中包括消息类型，在一种可能的实现方式中，服务请求消息中的服务类型例如可以为终端设备根据终端设备待发送的信息确定的；或者，服务请求消息中的服务类型还可以为终端设备根据终端设备所在的位置确定的，或者，服务请求消息中的服务类型还可以为终端设备根据终端设备待发送的信息以及终端设备所在的位置确定的。
下面对这几种不同的实现方式分别进行介绍，在下述的介绍中，以网络设备是AMF网元为例进行说明，当网络设备为其余实现时，其实现方式类似。
在一种可能的实现方式中，本实施例中的服务请求消息中的服务类型是终端设备根据终端设备待发送的信息确定的。
例如终端设备待发送的信息为高优先级的第一信令，则服务类型为第二类型。
例如可以参照图7进行理解，图7为本申请实施例提供的确定服务类型的实现示意图一。
如图7所示，只要终端设备待发送的信息为高优先级的第一信令，比如说上述介绍的PS Data off状态改变的信令，就将服务请求(Service Request)消息中的服务类型(Service Type)为第二类型(Elevated Signalling)。基于上述介绍可以确定的是，当Service Type为第二类型(Elevated Signalling)的时候，AMF是不会拒绝终端设备的业务请求的，因此AMF可以与终端设备建立NAS连接。
以及还需要说明，现有技术中终端设备如果要发送高优先级的第一信令，在确定服务请求(Service Request)消息中的服务类型(Service Type)时，是根据终端设备当前所在的位置是在什么区域来确定的。具体的，当终端设备在不允许区域的时候，会将Service Type设置为Elevated Signalling，但是当终端设备在允许区域的时候，是将Service Type设置为signalling的。正是因为这样，才导致了上述介绍的特殊情况下，AMF拒绝终端设备的业务请求。
然而本实施例中是不考虑终端设备所在的位置是在什么区域的，只要终端设备是要发送高优先级的第一信令，就将Service Type设置为Elevated Signalling。这样的话AMF就不会拒绝终端设备的业务请求，进而避免了终端设备和AMF重复执行SR流程。
例如在一种示例中，终端设备在生成服务请求消息的时候，终端设备所在的位置为允许区域，本实施例中会将Service Type设置为Elevated Signalling，这样的话 AMF就会和终端设备建立连接，进而避免因为终端设备在允许区域将服务类型设置成一般信令，之后允许区域改变，终端设备和AMF网元就要重复执行SR流程。本实施例中在需要发送高优先级的信令时，直接将Service Type设置为Elevated Signalling，就可以有效避免上述问题。
在另一种可能的实现方式中，服务请求消息中的服务类型还可以为终端设备根据终端设备所在的位置确定的。
例如终端设备确定其所在的位置为允许区域，则服务请求消息中的服务类型为第一类型或者第三类型。
例如可以参照图8进行理解，图8为本申请实施例提供的确定服务类型的实现示意图二。
具体的，终端设备可以判断其所在的位置是否为允许区域，如图8所示，若终端设备确定其所在的区域为允许区域，则终端设备会将服务请求消息中的服务类型为第一类型(signalling)或者第三类型(data)，具体是第一类型还是第三类型，可以取决于终端设备发送的信息是信令还是数据。
可以理解的是，在这种实现方式下，即使终端设备待发送的信息是高优先级的信令，比如说PS Data off状态改变的信令，但是因为终端设备是根据终端设备所在的位置来确定Service Type的，因此会将Service Type设置为signalling，这一点与现有技术中的类似。
那么同样类似的，当Service Type为signalling或者data的时候，AMF是可以根据实际情况拒绝终端设备的业务请求的，这样就可能会导致SR过程的重复执行，这一点正是现有技术中的缺陷。
然而在本申请的技术方案中，AMF不会拒绝终端设备的业务请求，而是根据服务请求消息与终端设备建立NAS连接。
在一种可能的实现方式中，AMF可以在确定满足第一条件时，根据服务请求消息，与终端设备建立非接入层NAS连接。
其中，第一条件包括：
AMF已向终端设备发起寻呼，并且AMF存在待发送给终端设备的信令；和/或，
允许区域发生更新，AMF确定更新后的允许或不允许区域尚未发送给终端设备，并且终端设备所在的位置位于更新前的允许区域或者不位于更新前的不允许区域。
可以参照图8进行理解，在Service Type为signalling或者data的时候，如果AMF确定已经向终端设备发起了寻呼，并且AMF确定还存在需要发送给终端设备的信令，那么在这种情况下，无论终端设备是在允许区域还是不允许区域，AMF都不拒绝终端设备的业务请求，会和终端设备建立NAS连接。和/或，
在Service Type为signalling或者data的时候，如果AMF确定允许区域(allowed area)已经发生了更新，但是更新后的allowed area还没有发送给终端设备，那么在这种情况下，AMF会根据更新前的允许区域来确定是否拒绝终端设备的业务请求。
在一种可能的实现方式中，如果终端设备所在的位置位于更新前的允许区域，那么AMF不拒绝终端设备的业务请求，会和终端设备建立NAS连接。
在另一种可能的实现方式中，如果终端设备所在的位置位于更新前的不允许区域，那也就是说终端设备在不允许区域发起的SR流程，并且Service Type为signalling或者data，那么在这种情况下，AMF会拒绝终端设备的业务请求。然而需要说明的是，当前这种AMF拒绝的情况并非上述介绍的会重复执行SR流程的情况，在这种情况下终端设备就是在不允许区域发起了一般信令对应的SR流程，因此AMF当前拒绝终端设备的业务请求是正确的。
本实施例中终端设备根据其所在的位置来确定服务请求消息中的服务类型，之后 AMF可以确定当前AMF或者终端设备是否满足相应的第一条件，在确定满足条件的时候，尽管服务类型为signalling或者data，AMF仍然不拒绝终端设备的业务请求，而是和终端设备建立NAS连接，进而避免了终端设备和AMF重复执行SR流程。
此外，服务请求消息中的服务类型还可以为终端设备根据终端设备待发送的信息以及终端设备所在的位置确定的。
具体的，若终端设备待发送的消息为高优先级的信令，以及终端设备确定其所在的位置为不允许区域，则终端设备可以设置服务请求消息中的服务类型为第二类型。
例如当前终端设备需要发送PS Data off状态改变的信令，以及终端设备当前位于non-allowed area，那么终端设备可以将Service Type设置为Elevated Signalling，这样的话AMF就不会拒绝终端设备的业务请求，当前的这种情况与上述介绍的类似，此处不再赘述。
上述各实施例介绍的是网络设备一侧的实现方式，下面结合图9对终端设备侧的实现方式进行介绍，图9为本申请实施例提供的通信方法的流程示意图二。
如图9所示，该方法包括：
S901、向网络设备发送服务请求消息，其中，服务请求消息中的服务类型为第一类型、第二类型、第三类型中的任一种，第一类型用于指示待发送的信息为一般的信令、第二类型用于指示待发送的信息为高优先级的信令，第三类型用于指示待发送的信息为用户数据。
在本实施例中，终端设备可以向网络设备发送服务请求消息，服务请求消息的实现方式与上述介绍的类似。
S902、与网络设备建立NAS连接，其中，NAS连接用于终端设备发送信息，信息包括高优先级的第一信令。
基于上述介绍可以确定的是，当终端设备发送高优先级的第一信令时，本实施例中的网络设备不会拒绝终端设备，而是和终端设备建立NAS连接，因此终端设备可以与AMF建立NAS连接。之后终端设备就可以基于NAS连接发送高优先级的第一信令，其实现方式与上述介绍的类似，此处不再赘述。
终端设备侧的各种可能的实现方式与上述AMF侧的实现方式均类似，此处不再进行赘述。
本申请实施例提供的通信方法，包括：向网络设备发送服务请求消息，其中，服务请求消息中的服务类型为第一类型、第二类型、第三类型中的任一种，第一类型用于指示待发送的信息为一般的信令、第二类型用于指示待发送的信息为高优先级的信令，第三类型用于指示待发送的信息为用户数据。与AMF网络设备NAS连接。其中，NAS连接用于终端设备发送信息，信息包括高优先级的第一信令。通过设置服务请求消息中的服务类型为第二类型，和/或，AMF网元根据服务请求消息，始终与终端设备建立NAS连接，也就是说不拒绝终端设备的业务请求，从而可以有效避免终端设备和网络设备重复执行SR过程，进而有效避免重复执行SR过程所导致的PS Data off状态改变的信令的处理时间被延长的问题。
综上所述，本申请提供的通信方法，可以避免终端设备和网络设备重复执行SR过程，进而有效避免重复执行SR过程所导致的PS Data off状态改变的信令的处理时间被延长的问题，以实现节省信令，加快PS data off状态改变的信令的传输，节省流量的目的。
图10为本申请实施例提供的通信装置的结构示意图一。请参见图10，该通信装置100可以包括接收模块1001以及连接模块1002，其中，
接收模块1001，用于接收终端设备发送的服务请求消息，其中，所述服务请求消息中的服务类型为第一类型、第二类型、第三类型中的任一种，所述第一类型用于指 示待发送的信息为一般的信令(、所述第二类型用于指示待发送的信息为高优先级的信令，所述第三类型用于指示待发送的信息为用户数据；
连接模块1002，用于根据所述服务请求消息，与所述终端设备建立非接入层NAS连接；
其中，所述NAS连接用于接收所述终端设备基于所述NAS连接发送的信息，所述信息包括高优先级的第一信令。
在一种可能的实施方式中，所述终端设备处于空闲态，其中，所述服务类型为所述终端设备根据所述终端设备待发送的信息，和/或，所述终端设备所在的位置确定的。
在一种可能的实施方式中，所述终端设备待发送的信息为高优先级的第一信令，则所述服务请求消息中的服务类型为所述第二类型。
在一种可能的实施方式中，所述终端设备所在的位置为允许区域。
在一种可能的实施方式中，所述终端设备确定其所在的位置为允许区域，则所述服务请求消息中的服务类型为第一类型或者第三类型。
在一种可能的实施方式中，所述连接模块1002具体用于：
在确定满足第一条件时，根据所述服务请求消息，与所述终端设备建立非接入层NAS连接。
在一种可能的实施方式中，所述第一条件包括：
所述网络设备已向所述终端设备发起寻呼，并且所述网络设备存在待发送给所述终端设备的信令；和/或，
所述允许区域发生更新，所述网络设备确定更新后的允许区域或者更新后的不允许区域尚未发送给所述终端设备，并且所述终端设备所在的位置位于更新前的允许区域或者不位于更新前的不允许区域。
在一种可能的实施方式中，所述高优先级的第一信令为通知分组交换数据中断的状态改变的信令。
在一种可能的实施方式中，所述网络设备为AMF网元。
本申请实施例提供的通信装置可以执行上述方法实施例所示的技术方案，其实现原理以及有益效果类似，此处不再进行赘述。
图11为本申请实施例提供的通信装置的结构示意图二。请参见图11，该通信装置110可以包括发送模块1101以及连接模块1102，其中，
发送模块1101，用于向网络设备发送服务请求消息，其中，所述服务请求消息中的服务类型为第一类型、第二类型、第三类型中的任一种，所述第一类型用于指示待发送的信息为一般的信令、所述第二类型用于指示待发送的信息为高优先级的信令，所述第三类型用于指示待发送的信息为用户数据；
连接模块1102，用于与所述网络设备建立NAS连接；其中，所述NAS连接用于所述终端设备发送信息，所述信息包括高优先级的第一信令。
在一种可能的实施方式中，所述终端设备处于空闲态，其中，所述服务请求消息中的服务类型为所述终端设备根据所述终端设备待发送的信息，和/或，所述终端设备所在的位置确定的。
在一种可能的实施方式中，所述终端设备待发送的信息为高优先级的第一信令，则所述服务请求消息中的服务类型为所述第二类型。
在一种可能的实施方式中，所述终端设备所在的位置为允许区域。
在一种可能的实施方式中，所述终端设备确定其所在的位置为允许区域，则所述服务请求消息中的服务类型为第一类型或者第三类型。
在一种可能的实施方式中，所述连接模块1102具体用于：
在第一条件被满足时，与所述网络设备建立NAS连接。
在一种可能的实施方式中，所述第一条件包括：
所述网络设备已向所述终端设备发起寻呼，并且所述网络设备存在待发送给所述终端设备的信令；和/或，
所述允许区域发生更新，所述终端设备尚未接收到更新后的允许区域或者更新后的不允许区域，并且所述终端设备所在的位置位于更新前的允许区域或者不位于更新前的不允许区域。
在一种可能的实施方式中，所述高优先级的第一信令为通知分组交换数据中断的状态改变的信令。
在一种可能的实施方式中，所述网络设备为AMF网元。
本申请实施例提供的通信装置可以执行上述方法实施例所示的技术方案，其实现原理以及有益效果类似，此处不再进行赘述。
图12为本申请实施例提供的终端设备的结构示意图。请参见图12，终端设备120可以包括：收发器21、存储器22、处理器23。收发器21可包括：发射器和/或接收器。该发射器还可称为发送器、发射机、发送端口或发送接口等类似描述，接收器还可称为接收器、接收机、接收端口或接收接口等类似描述。示例性地，收发器21、存储器22、处理器23，各部分之间通过总线24相互连接。
存储器22用于存储程序指令；
处理器23用于执行该存储器所存储的程序指令，用以使得终端设备120执行上述任一所示的通信方法。
其中，收发器21的接收器，可用于执行上述通信方法中终端设备的接收功能。
图13为本申请实施例提供的网络设备的结构示意图。请参见图13，网络设备130可以包括：收发器31、存储器32、处理器33。收发器31可包括：发射器和/或接收器。该发射器还可称为发送器、发射机、发送端口或发送接口等类似描述，接收器还可称为接收器、接收机、接收端口或接收接口等类似描述。示例性地，收发器31、存储器32、处理器33，各部分之间通过总线34相互连接。
存储器32用于存储程序指令；
处理器33用于执行该存储器所存储的程序指令，用以使得网络设备130执行上述任一所示的通信方法。
其中，收发器31的接收器，可用于执行上述通信方法中网络设备的接收功能。
本申请实施例提供一种计算机可读存储介质，所述计算机可读存储介质中存储有计算机执行指令，当所述计算机执行指令被处理器执行时用于实现上述通信方法。
本申请实施例提供一种计算机可读存储介质，所述计算机可读存储介质中存储有计算机执行指令，当所述计算机执行指令被处理器执行时用于实现上述通信方法。
本申请实施例还可提供一种计算机程序产品，该计算机程序产品可以由处理器执行，在计算机程序产品被执行时，可实现上述任一所示的终端设备或者网络设备执行的通信方法。
本申请实施例的通信设备、计算机可读存储介质及计算机程序产品，可执行上述终端设备以及网络设备执行的通信方法，其具体的实现过程及有益效果参见上述，在此不再赘述。
在本申请所提供的几个实施例中，应该理解到，所揭露的系统，装置和方法，可以通过其它的方式实现。例如，以上所描述的装置实施例仅仅是示意性的，例如，所述单元的划分，仅仅为一种逻辑功能划分，实际实现时可以有另外的划分方式，例如多个单元或组件可以结合或者可以集成到另一个系统，或一些特征可以忽略，或不执行。另一点，所显示或讨论的相互之间的耦合或直接耦合或通信连接可以是通过一些接口，装置或单元的间接耦合或通信连接，可以是电性，机械或其它的形式。
所述作为分离部件说明的单元可以是或者也可以不是物理上分开的，作为单元显示的部件可以是或者也可以不是物理单元，即可以位于一个地方，或者也可以分布到多个网络单元上。可以根据实际的需要选择其中的部分或者全部单元来实现本实施例方案的目的。另外，在本申请各个实施例中的各功能单元可以集成在一个处理单元中，也可以是各个单元单独物理存在，也可以两个或两个以上单元集成在一个单元中。上述集成的单元既可以采用硬件的形式实现，也可以采用软件功能单元的形式实现。
本领域普通技术人员可以理解：实现上述各方法实施例的全部或部分步骤可以通过程序指令相关的硬件来完成。前述的计算机程序可以存储于一计算机可读取存储介质中。该计算机程序在被处理器执行时，实现包括上述各方法实施例的步骤；而前述的存储介质包括：ROM、RAM、磁碟或者光盘等各种可以存储程序代码的介质。
最后应说明的是：以上各实施例仅用以说明本申请的技术方案，而非对其限制；尽管参照前述各实施例对本申请进行了详细的说明，本领域的普通技术人员应当理解：其依然可以对前述各实施例所记载的技术方案进行修改，或者对其中部分或者全部技术特征进行等同替换；而这些修改或者替换，并不使相应技术方案的本质脱离本申请各实施例技术方案的范围。

Claims (40)

  1. 一种通信方法，应用于网络设备，其特征在于，
    接收终端设备发送的服务请求消息，其中，所述服务请求消息中的服务类型为第一类型、第二类型、第三类型中的任一种，所述第一类型用于指示待发送的信息为一般的信令、所述第二类型用于指示待发送的信息为高优先级的信令，所述第三类型用于指示待发送的信息为用户数据；
    根据所述服务请求消息，与所述终端设备建立非接入层NAS连接；
    其中，所述NAS连接用于接收所述终端设备基于所述NAS连接发送的信息，所述信息包括高优先级的第一信令。
  2. 根据权利要求1所述的方法，其特征在于，所述终端设备处于空闲态，其中，所述服务类型为所述终端设备根据所述终端设备待发送的信息，和/或，所述终端设备所在的位置确定的。
  3. 根据权利要求2所述的方法，其特征在于，所述终端设备待发送的信息为高优先级的第一信令，则所述服务请求消息中的服务类型为所述第二类型。
  4. 根据权利要求3所述的方法，其特征在于，所述终端设备所在的位置为允许区域。
  5. 根据权利要求2所述的方法，其特征在于，所述终端设备确定其所在的位置为允许区域，则所述服务请求消息中的服务类型为第一类型或者第三类型。
  6. 根据权利要求5所述的方法，其特征在于，根据所述服务请求消息，与所述终端设备建立非接入层NAS连接，包括：
    在确定满足第一条件时，根据所述服务请求消息，与所述终端设备建立NAS连接。
  7. 根据权利要求6所述的方法，其特征在于，所述第一条件包括：
    所述网络设备已向所述终端设备发起寻呼，并且所述网络设备存在待发送给所述终端设备的信令；和/或，
    所述允许区域发生更新，所述网络设备确定更新后的允许区域或者更新后的不允许区域尚未发送给所述终端设备，并且所述终端设备所在的位置位于更新前的允许区域或者不位于更新前的不允许区域。
  8. 根据权利要求1-7任一项所述的方法，其特征在于，所述高优先级的第一信令为通知分组交换数据中断的状态改变的信令。
  9. 根据权利要求1-8任一项所述的方法，其特征在于，所述网络设备为接入和移动性管理功能AMF网元。
  10. 一种通信方法，应用于终端设备，其特征在于，
    向网络设备发送服务请求消息，其中，所述服务请求消息中的服务类型为第一类型、第二类型、第三类型中的任一种，所述第一类型用于指示待发送的信息为一般的信令、所述第二类型用于指示待发送的信息为高优先级的信令，所述第三类型用于指示待发送的信息为用户数据；
    与所述网络设备建立NAS连接；
    其中，所述NAS连接用于所述终端设备发送信息，所述信息包括高优先级的第一信令。
  11. 根据权利要求10所述的方法，其特征在于，所述终端设备处于空闲态，其中，所述服务类型为所述终端设备根据所述终端设备待发送的信息，和/或，所述终端设备所在的位置确定的。
  12. 根据权利要求11所述的方法，其特征在于，所述终端设备待发送的信息为高优先级的第一信令，则所述服务请求消息中的服务类型为所述第二类型。
  13. 根据权利要求12所述的方法，其特征在于，所述终端设备所在的位置为允许区域。
  14. 根据权利要求11所述的方法，其特征在于，所述终端设备确定其所在的位置为允许区域，则所述服务请求消息中的服务类型为第一类型或者第三类型。
  15. 根据权利要求14所述的方法，其特征在于，所述与所述网络设备建立NAS连接，包括：
    在第一条件被满足时，与所述网络设备建立NAS连接。
  16. 根据权利要求15所述的方法，其特征在于，所述第一条件包括：
    所述网络设备已向所述终端设备发起寻呼，并且所述网络设备存在待发送给所述终端设备的信令；和/或，
    所述允许区域发生更新，所述终端设备尚未接收到更新后的允许区域或者更新后的不允许区域，并且所述终端设备所在的位置位于更新前的允许区域或者不位于更新前的不允许区域。
  17. 根据权利要求10-16任一项所述的方法，其特征在于，所述高优先级的第一信令为通知分组交换数据中断的状态改变的信令。
  18. 根据权利要求10-17任一项所述的方法，其特征在于，所述网络设备为AMF网元。
  19. 一种通信装置，应用于网络设备，其特征在于，
    接收模块，用于接收终端设备发送的服务请求消息，其中，所述服务请求消息中的服务类型为第一类型、第二类型、第三类型中的任一种，所述第一类型用于指示待发送的信息为一般的信令(、所述第二类型用于指示待发送的信息为高优先级的信令，所述第三类型用于指示待发送的信息为用户数据；
    连接模块，用于根据所述服务请求消息，与所述终端设备建立NAS连接；
    其中，所述NAS连接用于接收所述终端设备基于所述NAS连接发送的信息，所述信息包括高优先级的第一信令。
  20. 根据权利要求19所述的装置，其特征在于，所述终端设备处于空闲态，其中，所述服务类型为所述终端设备根据所述终端设备待发送的信息，和/或，所述终端设备所在的位置确定的。
  21. 根据权利要求20所述的装置，其特征在于，所述终端设备待发送的信息为高优先级的第一信令，则所述服务请求消息中的服务类型为所述第二类型。
  22. 根据权利要求21所述的装置，其特征在于，所述终端设备所在的位置为允许区域。
  23. 根据权利要求20所述的装置，其特征在于，所述终端设备确定其所在的位置为允许区域，则所述服务请求消息中的服务类型为第一类型或者第三类型。
  24. 根据权利要求23所述的装置，其特征在于，所述连接模块具体用于：
    在确定满足第一条件时，根据所述服务请求消息，与所述终端设备建立NAS连接。
  25. 根据权利要求24所述的装置，其特征在于，所述第一条件包括：
    所述网络设备已向所述终端设备发起寻呼，并且所述网络设备存在待发送给所述终端设备的信令；和/或，
    所述允许区域发生更新，所述网络设备确定更新后的允许区域或者更新后的不允许区域尚未发送给所述终端设备，并且所述终端设备所在的位置位于更新前的允许区域或者不位于更新前的不允许区域。
  26. 根据权利要求19-25任一项所述的装置，其特征在于，所述高优先级的第一信令为通知分组交换数据中断的状态改变的信令。
  27. 根据权利要求19-26任一项所述的装置，其特征在于，所述网络设备为AMF 网元。
  28. 一种通信装置，应用于终端设备，其特征在于，
    发送模块，用于向网络设备发送服务请求消息，其中，所述服务请求消息中的服务类型为第一类型、第二类型、第三类型中的任一种，所述第一类型用于指示待发送的信息为一般的信令、所述第二类型用于指示待发送的信息为高优先级的信令，所述第三类型用于指示待发送的信息为用户数据；
    连接模块，用于与所述网络设备建立NAS连接；
    其中，所述NAS连接用于所述终端设备发送信息，所述信息包括高优先级的第一信令。
  29. 根据权利要求28所述的装置，其特征在于，所述终端设备处于空闲态，其中，所述服务类型为所述终端设备根据所述终端设备待发送的信息，和/或，所述终端设备所在的位置确定的。
  30. 根据权利要求29所述的装置，其特征在于，所述终端设备待发送的信息为高优先级的第一信令，则所述服务请求消息中的服务类型为所述第二类型。
  31. 根据权利要求30所述的装置，其特征在于，所述终端设备所在的位置为允许区域。
  32. 根据权利要求29所述的装置，其特征在于，所述终端设备确定其所在的位置为允许区域，则所述服务请求消息中的服务类型为第一类型或者第三类型。
  33. 根据权利要求32所述的装置，其特征在于，所述连接模块具体用于：
    在第一条件被满足时，与所述网络设备建立NAS连接。
  34. 根据权利要求33所述的装置，其特征在于，所述第一条件包括：
    所述网络设备已向所述终端设备发起寻呼，并且所述网络设备存在待发送给所述终端设备的信令；和/或，
    所述允许区域发生更新，所述终端设备尚未接收到更新后的允许区域或者更新后的不允许区域，并且所述终端设备所在的位置位于更新前的允许区域或者不位于更新前的不允许区域。
  35. 根据权利要求28-34任一项所述的装置，其特征在于，所述高优先级的第一信令为通知分组交换数据中断的状态改变的信令。
  36. 根据权利要求28-35任一项所述的装置，其特征在于，所述网络设备为AMF网元。
  37. 一种网络设备，其特征在于，包括：收发器、处理器、存储器；
    所述存储器存储计算机执行指令；
    所述处理器执行所述存储器存储的计算机执行指令，使得所述处理器执行如权利要求1至9任一项所述的通信方法。
  38. 一种终端设备，其特征在于，包括：收发器、处理器、存储器；
    所述存储器存储计算机执行指令；
    所述处理器执行所述存储器存储的计算机执行指令，使得所述处理器执行如权利要求10至18任一项所述的通信方法。
  39. 一种计算机可读存储介质，其特征在于，所述计算机可读存储介质中存储有计算机执行指令，当所述计算机执行指令被处理器执行时用于实现如权利要求1至9或10至18任一项所述的通信方法。
  40. 一种计算机程序产品，包括计算机程序，其特征在于，所述计算机程序被处理器执行时实现如权利要求1至9或10至18任一项所述的通信方法。
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CN107005962A (zh) * 2015-07-27 2017-08-01 华为技术有限公司 无线通信网络注册方法、通信装置及系统
CN113068269A (zh) * 2016-11-04 2021-07-02 Oppo广东移动通信有限公司 数据传输方法、终端设备和网络设备
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