WO2018082098A1 - 一种网络状态管理方法及相关设备 - Google Patents

一种网络状态管理方法及相关设备 Download PDF

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Publication number
WO2018082098A1
WO2018082098A1 PCT/CN2016/104912 CN2016104912W WO2018082098A1 WO 2018082098 A1 WO2018082098 A1 WO 2018082098A1 CN 2016104912 W CN2016104912 W CN 2016104912W WO 2018082098 A1 WO2018082098 A1 WO 2018082098A1
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Prior art keywords
state
user terminal
network
network element
mobility management
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PCT/CN2016/104912
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English (en)
French (fr)
Inventor
应江威
杨艳梅
黄正磊
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华为技术有限公司
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Priority to PCT/CN2016/104912 priority Critical patent/WO2018082098A1/zh
Publication of WO2018082098A1 publication Critical patent/WO2018082098A1/zh

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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W28/00Network traffic management; Network resource management
    • H04W28/02Traffic management, e.g. flow control or congestion control
    • H04W28/10Flow control between communication endpoints
    • H04W28/12Flow control between communication endpoints using signalling between network elements
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W76/00Connection management

Definitions

  • the present invention relates to the field of wireless network technologies, and in particular, to a network management method and related devices.
  • a network slice is a new type of network and business model that can be customized to better meet the individual needs of consumers and businesses.
  • network segmentation divides a physical network into multiple virtual networks, thereby enabling multiple services to share a set of broadband network infrastructure while maintaining relative independence of service implementation.
  • Each network slice performs customized tailoring of network functions and management of corresponding network functions according to the needs of the business scenario. These network functions include coverage area, duration, capacity, speed, delay, reliability, security, and availability.
  • a network slice can be viewed as an instantiated core network architecture.
  • the "network slice" use cases currently considered by the industry include Mobile Broadband (MB), Massive Machine Type Communication (MMTC) and key machines. Critical Machine Type Communication (CMTC).
  • MB Mobile Broadband
  • MMTC Massive Machine Type Communication
  • CMTC Critical Machine Type Communication
  • the user equipment can access a single network slice, and can also access multiple network slices, and simultaneously use multiple network slices to provide different services.
  • FIG. 2 provides a schematic structural diagram of a user terminal accessing multiple network slices at the same time.
  • the characteristics or functions of the user terminal granularity are used as network functions shared by each slice, for example, Mobility Management (MM), authentication (AU), and slice selection function. , SSF) and other UE granularity control plane functions are shared.
  • MM Mobility Management
  • AU authentication
  • SSF slice selection function
  • MMF mobility management function
  • SMF session management function
  • FIG. 3 provides a relationship between MMF and SMF.
  • Schematic diagram of the architectural relationship In the 5G network, the MM and SM functions will be separated, each maintaining their MM and SM contexts; there is only one non-access stratum (NAS) connection between the UE and the network side, and all NAS signaling gateways are in the NAS entry point (proxy), responsible for signaling transmission and reception, security verification, routing; Next Generation-Radio Access Network (NG-RAN) and Next Generation-Core Network (NG-CN) There is only one NG2 connection.
  • NAS non-access stratum
  • proxy Next Generation-Radio Access Network
  • NG-CN Next Generation-Core Network
  • the prior art does not consider the state management of MMs of 5G multiple network slices in a single NAS connection scenario.
  • the 4G network all PDN connections of the UE are established together or released together.
  • the release procedure of the PDN connection is initiated, so that the MME enters an idle state.
  • the network slices of the UE are managed independently of each other, the establishment and release of the NG3 connection of the PDU session of each network slice are independently processed, and different PDU sessions in one network slice are processed independently.
  • the establishment and release of NG3 connections are also handled independently. Since only one NAS connection can be maintained between the UE and the core network, and the MM and SM functions and signaling management are separate, and the MM cannot perceive the content of the SM message, the UE state processing mechanism of the existing 4G network cannot be used.
  • the prior art solution does not consider state management in a multi-NAS connection scenario; in the new architecture of the SM and MM separation of 5G, some network slices of the UE may be in an active state due to the presence of multiple network slices. Some network slices may be inactive. If the NAS connection status of the SM is always synchronized with the MN's NAS connection status, the network slice without service also needs to activate the Protocol Data Unit (PDU) session, which causes waste of network resources.
  • PDU Protocol Data Unit
  • the invention provides a network state management method and related equipment, which can improve utilization of network resources.
  • the application provides a network state management method, including:
  • the wireless access network node sends a user terminal context processing request to the mobility management network element when detecting that the session management network element of the user terminal transits from the first network state to the second network state; the mobility management network element receives the user terminal After the context processing request, return to the wireless access network node The user terminal context processing response is returned, and the mobility management network element is switched from the third network state to the fourth network state, so that the network slice without the service does not need to activate the PDU session, thereby improving the utilization of network resources.
  • the first network state is a session management idle state
  • the second network state is a session management connection state
  • the third network state is a mobility management idle state
  • the fourth network state is a mobility management connection state.
  • the first network state is a session management connection state
  • the second network state is a session management idle state
  • the third network state is a mobility management connection state
  • the fourth network state is a mobility management idle state.
  • the first network state is that the protocol data unit session is in an active state
  • the second network state is that the protocol data unit session is in an inactive state
  • the third network state is a connection state of the non-access stratum connection
  • the fourth network state is an idle state of the non-access stratum connection.
  • the mobility management network element After the mobility management network element receives the context release request, the user terminal context release response sent to the radio access network node, and the mobility management network element transitions from the connection state of the non-access stratum connection to the non-access stratum connection Idle state.
  • the implementation only triggers the RAN to release the NG2 connection between the RAN and the MM when all network slices of the user terminal are deactivated, thereby causing the MM to enter an idle state, thereby reducing waste of network resources.
  • the application provides a network state management method, including:
  • the mobility management network element first receives the status notification message sent by the session management network element; and then determines, according to the status notification message, whether the session management network element transitions from the first network state to the second network state; secondly, when determining the session management network element from the first When the network state transitions to the second network state, the user terminal context processing request is sent to the radio access network node, and finally, after receiving the user terminal context processing request, the radio access network node sends the user terminal context processing to the mobility management network element. In response, the mobility management network element transitions from the third network state to the fourth network state, thereby improving the utilization of network resources.
  • the first network state is a session management idle state
  • the second network state is a session management connection state
  • the third network state is a mobility management idle state
  • the fourth network state is a mobility management connection state.
  • the SM that triggers the network slice notifies the MM that the network slice enters the SM connection state, thereby triggering the MM to establish an NG2 connection between the MM and the RAN, thereby causing the MM to enter the connection state, thereby reducing the network. Waste of resources.
  • the first network state is a session management connection state
  • the second network state is a session management idle state
  • the third network state is a mobility management connection state
  • the fourth network state is a mobility management idle state.
  • the mobility management network element After all session management network elements transition from the session management connection state to the session management idle state, the mobility management network element connects to the wireless terminal when determining that all session management network elements of the user terminal transit from the session management connection state to the session management idle state.
  • the radio access network node receives the user terminal context release request, and sends the user terminal context release response to the mobility management network element, and the mobility management network element transitions from the mobility management connection state to the mobility management idle state status.
  • the implementation only triggers the MM to release the NG2 connection between the MM and the RAN when all the UEs are deactivated, thereby causing the MM to enter an idle state, thereby reducing waste of network resources.
  • the first network state is that the protocol data unit session is in an active state
  • the second network state is that the protocol data unit session is in an inactive state
  • the third network state is a connection state of the non-access stratum connection.
  • the fourth network state is an idle state of the non-access stratum connection; after all the protocol data unit sessions of the session management network element are switched from the active state to the inactive state, the mobility management network element determines all session management network elements of the user terminal Transmitting a user terminal context release request to the radio access network node when the protocol data unit session transitions from the active state to the inactive state; the radio access network node returns the user terminal to the mobility management network element after receiving the user terminal context release request The context release response, the mobility management network element transitions from the connection state of the non-access stratum connection to the idle state of the non-access stratum connection.
  • the implementation only triggers the MM to release the NG2 connection between the MM and the RAN when all network slices of the user terminal are deactivated, thereby causing the
  • the application provides a paging method, including:
  • the session management network element sends a location request to the mobility management network element when receiving the notification message of the arrival of the downlink data packet; after receiving the location request, the mobility management network element determines the current network state of the user terminal, and according to the current state of the user terminal.
  • the network status returns different location response information to the session management network element; the session management network element determines whether to send a paging request to the user terminal according to the location response information, thereby improving the utilization of network resources.
  • the location response information includes tracking area information. If the location response information received by the session management network element is tracking area information, it is determined that the user terminal is currently in an idle state; when it is determined that the user terminal is currently in an idle state.
  • the session management network element sends a paging request to the user terminal, and after receiving the paging request, the user terminal sends a service request to the radio access network node to establish a network connection.
  • the location response information includes address information of the radio access network node; if the location response information received by the session management network element is address information of the radio access network node, It is determined that the user terminal is currently in the connected state; when it is determined that the user terminal is currently in the connected state, the session management network element directly sends a connection establishment request to the wireless access network node.
  • the location response information includes address information of the radio access network node; if the location response information received by the session management network element is address information of the radio access network node, determining that the user terminal is currently in the connected state When it is determined that the user terminal is currently in the connected state, the session management network element sends a paging request carrying the network slice information to the user terminal, and after receiving the paging request, the user terminal according to the network slice information and the target in the multiple network slices The network slice establishes a connection.
  • the application provides a paging method, including:
  • the session management network element When receiving the notification message of the arrival of the downlink data packet, the session management network element sends a location request to the mobility management network element, and after receiving the location request sent by the session management network element, the mobility management network element acquires the current network state of the user terminal. And then returning different location response information to the session management network element according to the current network state of the user terminal; the session management network element determines whether to send a paging request to the user terminal according to the location response information, thereby improving network resource utilization.
  • the location response information includes the tracking area information; when the user terminal is currently in the idle state, the tracking area information is sent to the session management network element, and after receiving the tracking area information, the session management network element determines that the user terminal is in the In the idle state, a paging request is sent to the user terminal.
  • the location response information includes address information of the radio access network node; when the user terminal is currently in the connected state, the address information of the radio access network node is sent to the session management network element, and the session management network element receives After determining the user terminal to be in the connected state after the address information of the radio access network node, the connection establishment request is sent directly to the radio access network node.
  • the location response information includes address information of the radio access network node; when the user terminal is currently in the connected state, the address information of the radio access network node is sent to the session management network element, and the session management network element receives After the address information of the radio access network node is determined, the user terminal is determined to be in the connected state, and then the paging request carrying the network slice information is sent to the user terminal, and after receiving the paging request, the user terminal according to the network slice information and the multiple networks.
  • the target network slice in the slice establishes a connection.
  • the application provides a radio access network node, where the radio access network node
  • the method and function configured to implement the wireless access network node in the above first aspect is implemented by hardware/software, and the hardware/software includes units corresponding to the above functions.
  • the application provides a mobility management network element configured to implement the method and function performed by the mobility management network element in the foregoing second aspect, implemented by hardware/software, and hardware thereof.
  • /Software includes units corresponding to the above functions.
  • the present application provides a session management network element configured to implement the method and function performed by the session management network element in the foregoing third aspect, implemented by hardware/software, and hardware/software thereof. Includes units corresponding to the above functions.
  • the application provides a mobility management network element, where the mobility management network element is configured to implement the method and function performed by the mobility management network element in the foregoing fourth aspect, implemented by hardware/software, and hardware thereof.
  • /Software includes units corresponding to the above functions.
  • the present application provides a network state management device, including: a processor, a memory, and a communication bus, wherein the communication bus is configured to implement connection communication between the processor and the memory, and the processor executes the The program stored in the memory is used to implement the steps in a network state management method provided by the above first aspect.
  • the present application provides a network state management device, including: a processor, a memory, and a communication bus, wherein the communication bus is configured to implement connection communication between the processor and the memory, and the processor executes the The program stored in the memory is used to implement the steps in a network state management method provided by the second aspect above.
  • the present application provides a paging device, including: a processor, a memory, and a communication bus, wherein the communication bus is configured to implement connection communication between the processor and the memory, and the processor executes the The program stored in the memory is used to implement the steps in a paging method provided by the above third aspect.
  • the present application provides a paging device, including: a processor, a memory, and a communication bus, wherein the communication bus is configured to implement connection communication between the processor and the memory, and the processor performs the The program stored in the memory is used to implement the steps in a paging method provided by the above fourth aspect.
  • FIG. 1 is a schematic diagram of a network structure of a network slice provided by a prior art solution
  • FIG. 2 is a schematic structural diagram of a user terminal simultaneously accessing multiple network slices according to the prior art solution
  • FIG. 3 is a schematic diagram of an architectural relationship between an MMF and an SMF provided by the prior art solution
  • FIG. 4 is a schematic flowchart of a network state management method according to an embodiment of the present invention.
  • FIG. 5 is a schematic flowchart diagram of another network state management method according to an embodiment of the present invention.
  • FIG. 6 is a schematic flowchart diagram of another network state management method according to an embodiment of the present invention.
  • FIG. 7 is a schematic flowchart diagram of another network state management method according to an embodiment of the present invention.
  • FIG. 8 is a schematic flowchart diagram of another network state management method according to an embodiment of the present invention.
  • FIG. 9 is a schematic flowchart diagram of another network state management method according to an embodiment of the present invention.
  • FIG. 10 is a schematic flowchart diagram of another network state management method according to an embodiment of the present invention.
  • FIG. 11 is a schematic structural diagram of a radio access network node according to an embodiment of the present invention.
  • FIG. 12 is a schematic structural diagram of a mobility management network element according to an embodiment of the present invention.
  • FIG. 13 is a schematic structural diagram of a session management network element according to an embodiment of the present disclosure.
  • FIG. 14 is a schematic structural diagram of another mobility management network element according to an embodiment of the present disclosure.
  • FIG. 15 is a schematic structural diagram of a network state management device according to the present invention.
  • 16 is a schematic structural diagram of another network state management device according to the present invention.
  • FIG. 17 is a schematic structural diagram of a paging device according to the present invention.
  • FIG. 18 is a schematic structural diagram of another paging device proposed by the present invention.
  • FIG. 4 is a schematic flowchart diagram of a network state management method according to a first embodiment of the present invention. As shown in the figure, the method in the embodiment of the present invention includes:
  • the radio access network node sends a user terminal context processing request to the mobility management network element when detecting that the session management network element of the user terminal transits from the first network state to the second network state.
  • the radio access network node receives a user terminal context processing response sent by the mobility management network element, where the user terminal context processing response is used to indicate that the mobility management network element is switched from the third network state. To the fourth network state.
  • FIG. 5 is a schematic flowchart of a network state management method according to a second embodiment of the present invention.
  • the RAN is triggered to establish RAN and MM.
  • An NG2 connection such that the MM enters a connected state, wherein the first network state is a session management idle state, the second network state is a session management connection state, and the third network state is a mobility management idle state
  • the fourth network state is a mobility management connection state, and the specific process is as follows:
  • the user terminal sends a service request for the network slice to the radio access network node.
  • the user terminal before the user terminal initiates the service request, the user terminal is in an idle state, and all network slices are in an idle state.
  • the service request of the network slice is sent to the radio access network node.
  • the session management network element may send a paging request to the user terminal after receiving the notification message of the arrival of the downlink data, and after receiving the paging request, the user terminal sends a service request of the network slice to the radio access network node.
  • the user terminal may carry the service request by initializing a message of the session management network element.
  • the radio access network node sends a service request for the network slice to the session management network element SM1.
  • the session management network element SM1 sends a context establishment request to the radio access network node.
  • the radio access network node establishes a DRB (Data Radio Bearer) connection with the user terminal according to the context establishment request.
  • DRB Data Radio Bearer
  • the radio access network node sends a context establishment response to the session management network element SM1.
  • the session management network element SM1 configures a user plane parameter of the user plane function entity UPF1.
  • the radio access network node detects a network state of the session management network element of the user terminal, and when detecting that the session management network element of the user terminal transits from the session management idle state to the session management connection state, It is decided to trigger the RAN to establish a network connection between the RAN and the MM.
  • the radio access network node sends a user terminal context establishment request to the mobility management network element.
  • the mobility management network element sends a user terminal context establishment response to the radio access network node, and the mobility management network element transitions from the mobility management idle state to the mobility management connection state.
  • FIG. 6 is a schematic flowchart diagram of a network state management method according to a third embodiment of the present invention.
  • the RAN is triggered only when all network slices of the user terminal are deactivated. Release the NG2 connection between the RAN and the MM, so that the MM enters an idle state, where the first network state is a session management connection state, the second network state is a session management idle state, and the third network state is The mobility management connection state, the fourth network state being a mobility management idle state.
  • the specific process is as follows:
  • the radio access network node sends a context release request to the session management network element SM1. Wherein, before the wireless access network node sends the context release request, multiple network slices of the user terminal are in a connected state.
  • the session management network element SM1 releases the user plane parameter of the configured user plane function entity UPF1.
  • the session management network element SM1 sends a context release response to the radio access network node.
  • the radio access network node checks the network slice Slice1 that needs to be deactivated. If there are other network slice slices that need to be deactivated, it is decided to release only the DRB connection between the RAN and the UE of the network slice Slice1 without releasing the RAN. RRC connection with the UE.
  • the radio access network node releases the DRB connection between the RAN and the UE corresponding to the network slice Slice1.
  • the radio access network node sends a message that the context release is completed to the session management network element.
  • the NG2 between the RAN and the SM1 is released through the operation steps of S601-S606.
  • the radio access network node sends a context release request to the session management network element SM2.
  • the session management network element SM2 releases the user plane parameter of the configured user plane function entity UPF2.
  • the session management network element SM2 sends a context release response to the radio access network node.
  • the radio access network node checks whether there are other activated network slice slices except the network slice Slice2 that needs to be deactivated. If there is no other activated network slice slice, it is decided not only to release the network slice Slice2 between the RAN and the UE.
  • the DRB is connected, and the RRC connection between the RAN and the UE is released.
  • the radio access network node releases the DRB connection between the RAN and the UE corresponding to the network slice Slice2.
  • the radio access network node sends a message that the context release is completed to the session management network element SM2.
  • the radio access network node sends a context release request to the mobility management network element.
  • the mobility management network element sends a context release response to the radio access network node.
  • the radio access network node releases an RRC connection between the RAN and the UE.
  • the radio access network node sends a message that the context release is completed to the mobility management network element.
  • the mobility management network element transitions from the mobility management connection state to the mobility management idle state.
  • the fourth embodiment of the present invention further provides a network state management method, where the first network state is that the protocol data unit session is in an active state, and in the activated state, the SM maintains the context of the complete user terminal PDU session, including
  • the routing information of the uplink and downlink data has an NG3 data connection between the UPF of the UE1 and the NG-RAN under the control of the SM.
  • the second network state is that the protocol data unit session is in an inactive state. In the inactive state, the context of the user terminal PDU session on the SM deletes the routing information of the downlink data, and the UE under the control of the SM does not exist in the UPF.
  • the third network state is a connection state of a non-access stratum connection
  • the fourth network state is an idle state of a non-access stratum connection.
  • the wireless access network node first sends a user to the mobility management network element when detecting that the protocol data unit session of all the session management network elements of the user terminal transitions from the activated state to the inactive state a terminal context release request; the radio access network node then receives a user terminal context release response sent by the mobility management network element, and the mobility management network element transitions from the connection state of the non-access stratum connection to the non-access The idle state of the access layer connection. Similar to the above embodiments, the embodiments of the present invention are not described again.
  • FIG. 7 is a schematic flowchart diagram of a network state management method according to a fifth embodiment of the present invention. As shown in the figure, the method in the embodiment of the present invention includes:
  • the mobility management network element receives a status notification message sent by the session management network element.
  • the mobility management network element determines, according to the status notification message, whether the session management network element transitions from a first network state to a second network state.
  • the mobility management network element sends a user terminal context processing request to the radio access network node when determining that the session management network element transitions from the first network state to the second network state.
  • the mobility management network element receives a user terminal context processing response sent by the radio access network node, where the user terminal context processing response is used to indicate that the mobility management network element is converted from the third network state. To the fourth network state.
  • FIG. 8 is a schematic flowchart of a network state management method according to a sixth embodiment of the present invention.
  • the SM notification of the network slice is triggered.
  • the network slice enters the SM connection state, thereby triggering the MM to establish an NG2 connection between the MM and the RAN, so that the MM enters a connection state, wherein the first network state is a session management idle state, and the second network state is The session management connection state, the third network state is a mobility management idle state, and the fourth network state is a mobility management connection state, and the specific process is as follows:
  • the user terminal sends a service request for the network slice to the radio access network node.
  • the user terminal before the user terminal initiates the service request, the user terminal is in an idle state, and all network slices are in an idle state.
  • the service request of the network slice is sent to the radio access network node.
  • the session management network element may send a paging request to the user terminal after receiving the notification message of the arrival of the downlink data, and after receiving the paging request, the user terminal sends a service request of the network slice to the radio access network node.
  • the user terminal may carry the service request by initializing the message of the session management network element.
  • the radio access network node sends a service request of the network slice to the session management network element SM1.
  • the session management network element SM1 sends a context establishment request to the radio access network node.
  • the radio access network node establishes a DRB (Data Radio Bearer) connection with the user terminal according to the context establishment request.
  • DRB Data Radio Bearer
  • the radio access network node sends a context establishment response to the session management network element SM1.
  • the session management network element SM1 configures a user plane parameter of the user plane function entity UPF1.
  • the session management network element SM1 sends the status notification information to the mobility management network element, where the status notification message includes the connection status of the session management network element.
  • the status notification message may further include the identification information of the user terminal.
  • the mobility management network element detects a network state of the session management network element of the user terminal, and when it is determined that the session management network element of the user terminal transits from the session management idle state to the session management connection state, determining to trigger the RAN to establish Network connection between RAN and MM.
  • the mobility management network element sends a user terminal context establishment request to the radio access network node.
  • the radio access network node sends a user terminal context setup response to the mobility management network element, and the mobility management network element transitions from the mobility management idle state to the mobility management connection state.
  • FIG. 9 is a schematic flowchart diagram of another network state management method according to a seventh embodiment of the present invention.
  • the MM is triggered to release the NG2 connection between the MM and the RAN, so that the MM enters an idle state, where the first network state is a session management connection state, and the second network state is a session management idle state,
  • the third network state is a mobility management connection state
  • the fourth network state is a mobility management idle state
  • the radio access network node sends a context release request to the session management network element SM1. Wherein, before the wireless access network node sends the context release request, multiple network slices of the user terminal are in a connected state.
  • the session management network element SM1 releases the user plane parameter of the configured user plane function entity UPF1.
  • the session management network element SM1 sends a context release response to the radio access network node.
  • the radio access network node releases the DRB connection between the RAN and the UE corresponding to the network slice Slice1.
  • the radio access network node sends a message that the context release is completed to the session management network element SM1.
  • the session management network element SM1 sends a status notification message to the mobility management network element, where the status notification message includes an idle state of the session management network element SM1.
  • the status notification message may further include identification information of the user terminal.
  • the mobility management network element checks that the network slice Slice1 that needs to be deactivated currently, if there are other activated network slice slices, decides not to release the NG2 connection between the MM and the RAN.
  • the radio access network node sends a context release request to the session management network element SM2.
  • the session management network element SM2 releases the user plane parameter of the configured user plane function entity UPF2.
  • the session management network element SM2 sends a context release response to the radio access network node.
  • the radio access network node releases the DRB connection between the RAN and the UE corresponding to the network slice Slice2.
  • the radio access network node sends a message that the context release is completed to the session management network element SM2.
  • the session management network element SM2 sends a status notification message to the mobility management network element MM.
  • the mobility management network element checks whether there are other activated network slice Slices except for the network slice Slice2 that needs to be deactivated. If there is no other activated network slice slice, it is decided not only to release the connection between the RAN and the MM, but also Release an RRC connection between the RAN and the UE;
  • the mobility management network element sends a context release request to the radio access network node.
  • the radio access network node releases an RRC connection between the RAN and the UE.
  • the radio access network node sends a context release response to the mobility management network element, and the mobility management network element transitions from the mobility management connection state to the mobility management idle state.
  • the eighth embodiment of the present invention further provides a network state management method, where the first network state is a protocol data unit session is in an active state, and in the activated state, the SM maintains a complete user terminal PDU session context.
  • the routing information includes uplink and downlink data, and there is an NG3 data connection between the UPF of the UE1 and the NG-RAN under the control of the SM.
  • the second network state is that the protocol data unit session is in an inactive state.
  • the context of the user terminal PDU session on the SM deletes the routing information of the downlink data, and the UE under the control of the SM is in the UPF and The NG3 data connection between the NG-RANs, or the context in which the user terminal PDU session is not maintained on the SM, there is no NG3 data connection between the UPF and the NG-RAN of the user terminal under the control of the SM.
  • the third network state is a connection state of a non-access stratum connection
  • the fourth network state is an idle state of a non-access stratum connection
  • the mobility management network element first determines all the session management of the user terminal Sending a user terminal context release request to the mobile radio access network node when the protocol data unit session of the network element transitions from the activated state to the inactive state; and then receiving the user terminal sent by the radio access network node a context release response, the mobility management network element transitioning from a connection state of the non-access stratum connection to an idle state of the non-access stratum connection. Similar to the above embodiments, the embodiments of the present invention are not described again.
  • FIG. 10 is a schematic flowchart diagram of a paging method according to a ninth embodiment of the present invention. As shown in the figure, the method in the embodiment of the present invention includes:
  • the session management network element SM2 receives the notification message of the arrival of the downlink data packet, and all network slices are not activated until the notification message of the downlink data packet is received.
  • the session management network element SM2 sends a location request to the mobility management network element.
  • the mobility management acquires a current network state of the user terminal.
  • the mobility management network element sends location response information to the session management network element according to the current network state of the user terminal.
  • the location response information in S1104 carries the tracking area information; if S1003 acquires the current network state of the user terminal as a connected state, the S1104 The location response information carries address information of the wireless access network node.
  • the session management network element determines, according to the location response information, whether to send a paging request to the user terminal.
  • a paging request is sent to the user terminal, and after receiving the paging request, the user terminal performs the same steps of the above-described embodiments S501-S509.
  • step S1008 is performed to directly send a connection establishment request to the wireless access network node, thereby establishing a PDU session connection of the network slice.
  • the session management network element SM2 transitions from the session management idle state to the session management connection state, thereby triggering the mobility management network element to transition from the mobility management idle state to the mobility management connection state.
  • the location response information received by the session management network element is address information of the radio access network node, determining that the user terminal is currently in a connected state, where The setting response information may further include connection state information of the mobility management network element; when it is determined that the user terminal is currently in the connection state, perform steps S1009-S1010, and send a paging request carrying the network slice information to the user terminal.
  • the user terminal After receiving the paging request carrying the network slice information, the user terminal establishes a connection with the target network slice in the plurality of network slices according to the network slice information, and performs the same steps in the foregoing embodiments S501-S509.
  • FIG. 11 is a schematic structural diagram of a radio access network node according to an embodiment of the present invention.
  • the radio access network node includes a sending module 1101 and a receiving module 1102, where the sending module 1101 and the receiving module 1102 respectively perform the method performed by the radio access network node in the foregoing first to fourth embodiments.
  • the functions and functions are not described in detail in the embodiments of the present invention.
  • FIG. 12 is a schematic structural diagram of a mobility management network element according to an embodiment of the present invention.
  • the mobility management network element includes a receiving module 1201, a processing module 1202, and a sending module 1203, wherein the receiving module 1201, the processing module 1202, and the sending module 1203 respectively perform mobility in the fifth to eighth embodiments described above.
  • the methods and functions performed by the management network element are not described in detail in the embodiments of the present invention.
  • FIG. 13 is a schematic structural diagram of a session management network element according to an embodiment of the present invention.
  • the session management network element includes a sending module 1301, a receiving module 1302, and a processing module 1303, wherein the sending module 1301, the receiving module 1302, and the processing module 1303 respectively perform the execution of the session management network element in the ninth embodiment.
  • the method and function are not described in detail in the embodiments of the present invention.
  • FIG. 14 is a schematic structural diagram of a mobility management network element according to an embodiment of the present invention.
  • the mobility management network element includes a receiving module 1401, an obtaining module 1402, and a sending module 1403, wherein the receiving module 1401, the obtaining module 1402, and the sending module 1403 respectively perform the mobility management network element executed in the ninth embodiment.
  • the method and function of the present invention are not described in detail in the embodiments of the present invention.
  • FIG. 15 is a schematic structural diagram of a network state management device according to the present invention.
  • the apparatus can include at least one processor 1501, such as a CPU, at least one network interface 1502, at least one memory 1503, and at least one communication bus 1504.
  • the communication bus 1504 is used to implement connection communication between these components.
  • the network interface 1502 of the device in the embodiment of the present invention is used for signaling or data communication with other node devices.
  • the memory 1503 may be a high speed RAM memory or a non-volatile memory such as at least one disk memory.
  • the memory 1503 can also optionally be at least one storage device located remotely from the processor 1501.
  • a set of program codes is stored in the memory 1503, and the processor 1501 executes the program executed by the above-described wireless access network node in the memory 1503.
  • the processor is configured to invoke the program code and perform the following operations:
  • the user terminal context processing request is sent to the mobility management network element through the network interface 1502;
  • the network interface 1502 receives a user terminal context processing response sent by the mobility management network element, where the user terminal context processing response is used to indicate that the mobility management network element is switched from the third network state to the fourth network status.
  • the processor may also cooperate with the memory and the network interface to perform the operations of the radio access network node in the first to fourth embodiments of the present invention.
  • FIG. 16 is a schematic structural diagram of another network state management device according to the present invention.
  • the apparatus can include at least one processor 1601, such as a CPU, at least one network interface 1602, at least one memory 1603, and at least one communication bus 1604.
  • the communication bus 1604 is used to implement connection communication between these components.
  • the network interface 1602 of the device in the embodiment of the present invention is used for signaling or data communication with other node devices.
  • the memory 1603 may be a high speed RAM memory or a non-volatile memory such as at least one disk memory.
  • the memory 1603 can also optionally be at least one storage device located remotely from the aforementioned processor 1601.
  • a set of program codes is stored in the memory 1603, and the processor 1601 executes the programs executed by the above-described mobility management network elements in the memory 1603.
  • the network interface 1602 When it is determined that the session management network element transitions from the first network state to the second network state, the network interface 1602 sends a user terminal context processing request to the radio access network node;
  • the processor can also cooperate with the memory and the network interface to perform the operations of the mobility management network element in the fifth to eighth embodiments of the present invention.
  • FIG. 17 is a schematic structural diagram of a paging device according to the present invention.
  • the device can include at least one processor 1701, such as a CPU, at least one network interface 1702, at least one memory 1703, and at least one communication bus 1704.
  • the communication bus 1704 is used to implement connection communication between these components.
  • the network interface 1702 of the device in the embodiment of the present invention is used for signaling or data communication with other node devices.
  • the memory 1703 may be a high speed RAM memory or a non-volatile memory such as at least one disk memory.
  • the memory 1703 can also optionally be at least one storage device located remotely from the aforementioned processor 1701.
  • a set of program codes is stored in the memory 1703, and the processor 1701 executes the programs stored in the memory 1703, and the processor 1701 executes the programs executed by the above-described session management network elements in the memory 1703.
  • processor may also cooperate with the memory and the network interface to perform the operation of the session management network element in the ninth embodiment of the present invention.
  • FIG. 18 is a schematic structural diagram of a paging device according to the present invention.
  • the device can include at least one processor 1801, such as a CPU, at least one network interface 1802, at least one memory 1803, and at least one communication bus 1804.
  • the communication bus 1804 is used to implement connection communication between these components.
  • the standby network interface 1802 is used for signaling or data communication with other node devices.
  • the memory 1803 may be a high speed RAM memory or a non-volatile memory such as at least one disk memory.
  • the memory 1803 can also optionally be at least one storage device located remotely from the aforementioned processor 1801.
  • a set of program codes is stored in the memory 1803, and the processor 1801 executes the programs stored in the memory 1803, and the processor 1701 executes the programs executed by the above-described mobility management network elements in the memory 1703.
  • the processor can also cooperate with the memory and the network interface to perform the operation of the mobility management network element in the ninth embodiment of the present invention.
  • the program may be stored in a computer readable storage medium, and the storage medium may include: Flash disk, Read-Only Memory (ROM), Random Access Memory (RAM), disk or optical disk.

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Abstract

本发明实施例提供了一种网络状态管理方法及相关设备,包括:无线接入网络节点当检测到用户终端的会话管理网元从第一网络状态转换到第二网络状态时,向移动性管理网元发送用户终端上下文处理请求;所述无线接入网络节点接收所述移动性管理网元发送的用户终端上下文处理响应,所述用户终端上下文处理响应用于表示所述移动性管理网元从所述第三网络状态转换到所述第四网络状态,减少网络资源浪费。

Description

一种网络状态管理方法及相关设备 技术领域
本发明涉及无线网络技术领域,尤其涉及一种网络管理方法及相关设备。
背景技术
网络切片(slice)是一种新式网络和业务模式,可通过定制网络和管理,从而满足更好地满足消费者和企业每个服务的个性化需求。如图1所示,网络切片通过将一个物理网络分成多个虚拟网络,从而实现多种业务在共享一套宽带网络基础设施的同时、保持业务实现的相对独立。每个网络切片按照业务场景的需要进行网络功能的定制裁剪及相应网络功能的编排管理,这些网络功能包括覆盖区域、持续时间、容量、速度、延迟、可靠性、安全性和可用性等。一个网络切片可以视为一个实例化的核心网络架构,目前业界所考虑的“网络切片”用例包括移动宽带(Mobile Broadband,MB)、大规模机器类通信(Massive Machine Type Communication,MMTC)和关键机器类通信(Critical Machine Type Communication,CMTC)。
对于采用网络切片技术的核心网架构,用户终端(User Equipment,UE)可以接入单个网络切片,也可以接入多个网络切片,同时使用多个网络切片提供不同的服务。如图2所示,图2提供了一种用户终端同时接入多个网络切片的结构示意图。在该网络结构中,将用户终端粒度的特性或者功能作为各个切片共享的网络功能,比如,可对移动性管理(Mobility Management,MM)、认证功能(authentication,AU)、切片选择(slice selection function,SSF)等UE粒度的控制面功能进行共享。但是,由于各个网络切片的业务不同,其对应的业务控制和转发功能也完全不同,因此不能作为共享功能,而应该作为切片的独立功能,实现特定的服务。其中,主要的共享功能之一为移动性管理功能(mobility management function,MMF),主要的网络切片的独立功能之一为会话管理功能(session management function,SMF)。
在现有技术方案中,如图3所示,图3提供了一种MMF和SMF之间的 架构关系示意图。在5G网络中,MM和SM功能将会分离,各自维护其MM、SM上下文;UE和网络侧只存在一个非接入层(Non-access Stratum,NAS)连接,所有NAS信令的出入口都在NAS entry point(proxy),负责信令的发送和接收、安全验证、路由;无线接入网络(Next Generation-Radio Access Network,NG-RAN)和核心网(Next Generation-Core Network,NG-CN)只存在一个NG2连接。
但是,现有技术没有考虑在单NAS连接的场景下5G多个网络切片的MM的状态管理。在4G网络中,UE的所有PDN连接是一起建立或者一起释放的,当RAN发现所有UE的所有PDN连接不再有数据发送时,发起PDN连接的释放流程,使得MME进入空闲状态。但是,在5G网络中,由于UE的各个网络切片之间是相互独立管理的,各个网络切片的PDU会话的NG3连接的建立和释放都是独立处理的,并且一个网络切片中的不同PDU会话的NG3连接的建立和释放也都是独立处理的。由于UE和核心网之间只能维护一个NAS连接,而且MM和SM功能和信令管理是分开的,MM无法感知SM消息的内容,所以无法沿用现有4G网络的UE状态处理机制。
并且,现有技术方案没有考虑在多NAS连接场景下的状态管理;在5G的这种SM和MM分离新架构下,由于存在多网络切片,UE的某些网络切片可能出于激活状态,而某些网络切片可能处于非激活状态。如果SM的NAS连接状态始终同步于MM的NAS连接状态,则导致没有业务的网络切片也需要激活建立协议数据单元(Protocol Data Unit,PDU)会话,带来网络资源浪费。
发明内容
本发明提供了一种网络状态管理方法及相关设备,可以提高网络资源的利用率。
第一方面,本申请提供了一种网络状态管理方法,包括:
无线接入网络节点当检测到用户终端的会话管理网元从第一网络状态转换到第二网络状态时,向移动性管理网元发送用户终端上下文处理请求;移动性管理网元接收到用户终端上下文处理请求之后,向无线接入网络节点返 回用户终端上下文处理响应,移动性管理网元从第三网络状态转换到第四网络状态,避免没有业务的网络切片不必要激活PDU会话,从而提高网络资源的利用率。
在另一种可能的设计中,第一网络状态为会话管理空闲状态,第二网络状态为会话管理连接状态,第三网络状态为移动性管理空闲状态,第四网络状态为移动性管理连接状态;会话管理网元从会话管理空闲状态转换到会话管理连接状态之后,无线接入网络节点当检测到用户终端的会话管理网元从会话管理空闲状态转换到会话管理连接状态时,向移动性管理网元发送用户终端上下文建立请求;移动性管理网元接收到用户终端上下文建立请求,向无线接入网络节点返回用户终端上下文建立响应,移动性管理网元从移动性管理空闲状态转换到移动性管理连接状态。实现只要有一个网络切片激活则会触发RAN去建立RAN与MM之间的NG2连接,从而使得MM进入连接状态。
在另一种可能的设计中,第一网络状态为会话管理连接状态,第二网络状态为会话管理空闲状态,第三网络状态为移动性管理连接状态,第四网络状态为移动性管理空闲状态;所有会话管理网元从会话管理连接状态转换到会话管理空闲状态之后,无线接入网络节点当检测到用户终端的所有会话管理网元从会话管理连接状态转换到会话管理空闲状态时,向移动性管理网元发送用户终端上下文释放请求;移动性管理网元接收到用户终端上下文释放请求之后,向无线接入网络节点返回用户终端上下文释放响应,移动性管理网元从移动性管理连接状态转换到移动性管理空闲状态。实现只有当用户终端的所有网络切片都去激活了,才会触发RAN去释放RAN与MM之间的NG2连接,从而使得MM进入空闲状态,减少网络资源的浪费。
在另一种可能的设计中,第一网络状态为协议数据单元会话处于激活状态,第二网络状态为协议数据单元会话处于非激活状态,第三网络状态为非接入层连接的连接状态,第四网络状态为非接入层连接的空闲状态。所有会话管理网元的协议数据单元会话从激活状态转换到非激活状态之后,无线接入网络节点当检测到用户终端的所有会话管理网元的协议数据单元会话从激活状态转换到非激活状态时,向移动性管理网元发送用户终端上下文释放请 求;移动性管理网元接收到上下文释放请求之后,向无线接入网络节点发送的用户终端上下文释放响应,移动性管理网元从非接入层连接的连接状态转换到非接入层连接的空闲状态。实现只有当用户终端的所有网络切片都去激活了,才会触发RAN去释放RAN与MM之间的NG2连接,从而使得MM进入空闲状态,从而减少网络资源的浪费。
第二方面,本申请提供了一种网络状态管理方法,包括:
移动性管理网元首先接收会话管理网元发送的状态通知消息;然后根据状态通知消息,确定会话管理网元是否从第一网络状态转换到第二网络状态;其次当确定会话管理网元从第一网络状态转换到第二网络状态时,向无线接入网络节点发送用户终端上下文处理请求,最后无线接入网络节点接收到用户终端上下文处理请求之后,向移动性管理网元发送用户终端上下文处理响应,移动性管理网元从第三网络状态转换到第四网络状态,从而提高网络资源的利用率。
在另一种可能的设计中,第一网络状态为会话管理空闲状态,第二网络状态为会话管理连接状态,第三网络状态为移动性管理空闲状态,第四网络状态为移动性管理连接状态;会话管理网元从会话管理空闲状态转换到会话管理连接状态之后,向移动性管理网元发送状态通知消息,移动性管理网元当确定用户终端的会话管理网元从会话管理空闲状态转换到会话管理连接状态时,向无线接入网络节点发送用户终端上下文建立请求;无线接入网络节点接收到用户终端上下文建立请求之后,向移动性管理网元发送的用户终端上下文建立响应,移动性管理网元从移动性管理空闲状态转换到移动性管理连接状态。实现只要有一个网络切片激活则会触发该网络切片的SM通知MM该网络切片进入了SM连接状态,从而触发MM去建立MM和RAN之间的NG2连接,从而使得MM进入连接状态,从而减少网络资源的浪费。
在另一种可能的设计中,第一网络状态为会话管理连接状态,第二网络状态为会话管理空闲状态,第三网络状态为移动性管理连接状态,第四网络状态为移动性管理空闲状态;所有会话管理网元从会话管理连接状态转换到会话管理空闲状态之后,移动性管理网元当确定用户终端的所有会话管理网元从会话管理连接状态转换到会话管理空闲状态时,向无线接入网络节点发 送用户终端上下文释放请求;无线接入网络节点接收到用户终端上下文释放请求,向移动性管理网元发送用户终端上下文释放响应,移动性管理网元从移动性管理连接状态转换到移动性管理空闲状态。实现只有当UE的所有去激活了,才会触发MM去释放MM与RAN之间的NG2连接,从而使得MM进入空闲状态,从而减少网络资源的浪费。
在另一种可能的设计中,第一网络状态为协议数据单元会话处于激活状态,第二网络状态为协议数据单元会话处于非激活状态,第三网络状态为非接入层连接的连接状态,第四网络状态为非接入层连接的空闲状态;所有会话管理网元的协议数据单元会话从激活状态转换到非激活状态之后,移动性管理网元当确定用户终端的所有会话管理网元的协议数据单元会话从激活状态转换到非激活状态时,向无线接入网络节点发送用户终端上下文释放请求;无线接入网络节点接收到用户终端上下文释放请求之后,向移动性管理网元返回用户终端上下文释放响应,移动性管理网元从非接入层连接的连接状态转换到非接入层连接的空闲状态。实现只有当用户终端的所有网络切片都去激活了,才会触发MM去释放MM与RAN之间的NG2连接,从而使得MM进入空闲状态,从而减少网络资源的浪费。
第三方面,本申请提供了一种寻呼方法,包括:
会话管理网元当接收到下行数据包到达的通知消息时,向移动性管理网元发送位置请求;移动性管理网元接收到位置请求之后,确定用户终端当前的网络状态,并根据用户终端当前的网络状态向会话管理网元返回不同的位置响应信息;会话管理网元根据位置响应信息,确定是否向用户终端发送寻呼请求,从而提高网络资源的利用率。
在一种可能的设计中,位置响应信息包括跟踪区域信息,若会话管理网元接收到的位置响应信息为跟踪区域信息,则确定用户终端当前处于空闲状态;当确定用户终端当前处于空闲状态时,会话管理网元向用户终端发送寻呼请求,用户终端接收到寻呼请求之后,向无线接入网络节点发送服务请求进而建立网络连接。
在一种可能的设计中,位置响应信息包括无线接入网络节点的地址信息;若会话管理网元接收到的位置响应信息为无线接入网络节点的地址信息,则 确定用户终端当前处于连接状态;当确定用户终端当前处于连接状态时,会话管理网元直接向无线接入网络节点发送连接建立请求。
在一种可能的设计中,位置响应信息包括无线接入网络节点的地址信息;若会话管理网元接收到的位置响应信息为无线接入网络节点的地址信息,则确定用户终端当前处于连接状态;当确定用户终端当前处于连接状态时,会话管理网元向用户终端发送携带有网络切片信息的寻呼请求,用户终端接收到寻呼请求之后,根据网络切片信息与多个网络切片中的目标网络切片建立连接。
第四方面,本申请提供了一种寻呼方法,包括:
会话管理网元当接收到下行数据包到达的通知消息时,向移动性管理网元发送位置请求,移动性管理网元接收到会话管理网元发送的位置请求之后,获取用户终端当前的网络状态;然后并根据用户终端当前的网络状态向会话管理网元返回不同的位置响应信息;会话管理网元根据位置响应信息,确定是否向用户终端发送寻呼请求,从而提高网络资源的利用率。
在一种可能的设计中,位置响应信息包括跟踪区域信息;当用户终端当前处于空闲状态时,向会话管理网元发送跟踪区域信息,会话管理网元接收到跟踪区域信息之后,确定用户终端处于空闲状态,则向用户终端发送寻呼请求。
在一种可能的设计中,位置响应信息包括无线接入网络节点的地址信息;当用户终端当前处于连接状态时,向会话管理网元发送无线接入网络节点的地址信息,会话管理网元接收到无线接入网络节点的地址信息之后,确定用户终端处于连接状态,则向直接向无线接入网络节点发送连接建立请求。
在一种可能的设计中,位置响应信息包括无线接入网络节点的地址信息;当用户终端当前处于连接状态时,向会话管理网元发送无线接入网络节点的地址信息,会话管理网元接收到无线接入网络节点的地址信息之后,确定用户终端处于连接状态,则向用户终端发送携带有网络切片信息的寻呼请求,用户终端接收到寻呼请求之后,根据网络切片信息与多个网络切片中的目标网络切片建立连接。
第五方面,本申请提供了一种无线接入网络节点,该无线接入网络节点 被配置为实现上述第一方面中无线接入网络节点所执行的方法和功能,由硬件/软件实现,其硬件/软件包括与上述功能相应的单元。
第六方面,本申请提供了一种移动性管理网元,该移动性管理网元被配置为实现上述第二方面中移动性管理网元所执行的方法和功能,由硬件/软件实现,其硬件/软件包括与上述功能相应的单元。
第七方面,本申请提供了一种会话管理网元,该会话管理网元被配置为实现上述第三方面中会话管理网元所执行的方法和功能,由硬件/软件实现,其硬件/软件包括与上述功能相应的单元。
第八方面,本申请提供了一种移动性管理网元,该移动性管理网元被配置为实现上述第四方面中移动性管理网元所执行的方法和功能,由硬件/软件实现,其硬件/软件包括与上述功能相应的单元。
第九方面,本申请提供了一种网络状态管理设备,包括:处理器、存储器和通信总线,其中,所述通信总线用于实现所述处理器和存储器之间连接通信,处理器执行所述存储器中存储的程序用于实现上述第一方面提供的一种网络状态管理方法中的步骤。
第十方面,本申请提供了一种网络状态管理设备,包括:处理器、存储器和通信总线,其中,所述通信总线用于实现所述处理器和存储器之间连接通信,处理器执行所述存储器中存储的程序用于实现上述第二方面提供的一种网络状态管理方法中的步骤。
第十一方面,本申请提供了一种寻呼设备,包括:处理器、存储器和通信总线,其中,所述通信总线用于实现所述处理器和存储器之间连接通信,处理器执行所述存储器中存储的程序用于实现上述第三方面提供的一种寻呼方法中的步骤。
第十二方面,本申请提供了一种寻呼设备,包括:处理器、存储器和通信总线,其中,所述通信总线用于实现所述处理器和存储器之间连接通信,处理器执行所述存储器中存储的程序用于实现上述第四方面提供的一种寻呼方法中的步骤。
附图说明
为了更清楚地说明本发明实施例中的技术方案,下面将对实施例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发明的一些实施例,对于本领域普通技术人员来讲,在不付出创造性劳动性的前提下,还可以根据这些附图获得其他的附图。
图1是现有技术方案提供的一种网络切片的网络结构示意图;
图2是现有技术方案提供的一种用户终端同时接入多个网络切片的结构示意图;
图3现有技术方案提供的一种MMF和SMF之间的架构关系示意图;
图4是本发明实施例提出的一种网络状态管理方法的流程示意图;
图5是本发明实施例提供的另一种网络状态管理方法的流程示意图;
图6是本发明实施例提供的另一种网络状态管理方法的流程示意图;
图7是本发明实施例提出的另一种网络状态管理方法的流程示意图;
图8是本发明实施例提出的另一种网络状态管理方法的流程示意图;
图9是本发明实施例提出的另一种网络状态管理方法的流程示意图;
图10是本发明实施例提出的另一种网络状态管理方法的流程示意图;
图11是本发明实施例提供的一种无线接入网络节点的结构示意图;
图12是本发明实施例提供的一种移动性管理网元的结构示意图;
图13是本发明实施例提供的一种会话管理网元的结构示意图;
图14是本发明实施例提供的另一种移动性管理网元的结构示意图;
图15是本发明提出的一种网络状态管理设备的结构示意图;
图16是本发明提出的另一种网络状态管理设备的结构示意图;
图17是本发明提出的一种寻呼设备的结构示意图;
图18是本发明提出的另一种寻呼设备的结构示意图。
具体实施方式
下面将结合本发明实施例中的附图,对本发明实施例中的技术方案进行清楚、完整地描述,显然,所描述的实施例仅仅是本发明一部分实施例,而不是全部的实施例。基于本发明中的实施例,本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例,都属于本发明保护的范围。
请参考图4,图4是本发明第一实施例提出的一种网络状态管理方法的流程示意图。如图所示,本发明实施例中的方法包括:
S401,无线接入网络节点当检测到用户终端的会话管理网元从第一网络状态转换到第二网络状态时,向移动性管理网元发送用户终端上下文处理请求。
S402,所述无线接入网络节点接收所述移动性管理网元发送的用户终端上下文处理响应,所述用户终端上下文处理响应用于表示所述移动性管理网元从所述第三网络状态转换到所述第四网络状态。
以下通过第二实施例至第四实施例具体介绍上述实施例的实现过程:
请参考图5,图5是本发明第二实施例提供的一种网络状态管理方法的流程示意图,在本发明实施例中,只要有一个网络切片激活,则会触发RAN去建立RAN与MM之间的NG2连接,从而使得MM进入连接状态,其中,所述第一网络状态为会话管理空闲状态,所述第二网络状态为会话管理连接状态,所述第三网络状态为移动性管理空闲状态,所述第四网络状态为移动性管理连接状态,具体流程如下:
S501,用户终端向无线接入网络节点发送网络切片的服务请求。
具体实现中,在用户终端发起服务请求之前,用户终端处于空闲状态,所有网络切片处于空闲状态,当UE需要发起某个网络切片的业务时,向无线接入网络节点发送网络切片的服务请求;或者,会话管理网元在接收到下行数据到达的通知消息之后可以向用户终端发送寻呼请求,用户终端接收到寻呼请求之后,向无线接入网络节点发送网络切片的服务请求。其中,用户终端可以通过初始化会话管理网元的消息来承载所述服务请求。
S502,无线接入网络节点向会话管理网元SM1发送网络切片的服务请求。
S503,会话管理网元SM1向无线接入网络节点发送上下文建立请求。
S504,无线接入网络节点根据上下文建立请求,与用户终端建立DRB(Data Radio Bearer,数据无线承载)连接。
S505,无线接入网络节点向会话管理网元SM1发送上下文建立响应。
S506,会话管理网元SM1配置用户面功能实体UPF1的用户面参数。
至此,通过S501-S506的操作步骤,建立起了RAN与SM1之间的NG2连接,RAN与UPF1之间的NG3连接,RAN与UE之间的DRB连接。
S507,无线接入网络节点检测用户终端的会话管理网元的网络状态,当检测到所述用户终端的所述会话管理网元从所述会话管理空闲状态转换到所述会话管理连接状态时,决定触发RAN去建立RAN与MM之间的网络连接。
S508,无线接入网络节点向移动性管理网元发送用户终端上下文建立请求。
S509,移动性管理网元向无线接入网络节点发送用户终端上下文建立响应,移动性管理网元从所述移动性管理空闲状态转换到所述移动性管理连接状态。
请参考图6,图6是本发明第三实施例提供的一种网络状态管理方法的流程示意图,在发明实施例中,只有当用户终端的所有网络切片都去激活了,才会触发RAN去释放RAN与MM之间的NG2连接,从而使得MM进入空闲状态,其中,所述第一网络状态为会话管理连接状态,所述第二网络状态为会话管理空闲状态,所述第三网络状态为移动性管理连接状态,所述第四网络状态为移动性管理空闲状态。具体流程如下:
S601,无线接入网络节点向会话管理网元SM1发送上下文释放请求。其中,在无线接入网络节点发送上下文释放请求之前,用户终端的多个网络切片均处于连接状态。
S602,会话管理网元SM1释放配置的用户面功能实体UPF1的用户面参数。
S603,会话管理网元SM1向无线接入网络节点发送上下文释放响应。
S604,无线接入网络节点检查除了当前需要去激活的网络切片Slice1,如果存在其他需要去激活的网络切片Slice,则决定只释放网络切片Slice1的RAN与UE之间的DRB连接,而不释放RAN与UE之间的RRC连接。
S605,无线接入网络节点释放网络切片Slice1对应的RAN与UE之间的DRB连接。
S606,无线接入网络节点向会话管理网元发送上下文释放完成的消息。
至此,通过S601-S606的操作步骤,释放了RAN与SM1之间的NG2 连接,RAN与UPF1之间的NG3连接,Slice1对应的RAN与UE之间的DRB连接。
S607,无线接入网络节点向会话管理网元SM2发送上下文释放请求。
S608,会话管理网元SM2释放配置的用户面功能实体UPF2的用户面参数。
S609,会话管理网元SM2向无线接入网络节点发送上下文释放响应。
S610,无线接入网络节点检查除了当前需要去激活的网络切片Slice2,是否存在其他激活的网络切片Slice,如果不存在其他激活的网络切片Slice,则决定不仅释放网络切片Slice2的RAN与UE之间的DRB连接,而且释放RAN与UE之间的RRC连接。
S611,无线接入网络节点释放网络切片Slice2对应的RAN与UE之间的DRB连接。
S612,无线接入网络节点向会话管理网元SM2发送上下文释放完成的消息。
至此,通过S607-S612的操作步骤,释放了RAN与SM2之间的NG2连接,RAN与UPF2之间的NG3连接,Slice2对应的RAN与UE之间的DRB连接。
S613,无线接入网络节点向移动性管理网元发送上下文释放请求。
S614,移动性管理网元向无线接入网络节点发送上下文释放响应。
S615,无线接入网络节点释放RAN与UE之间的RRC连接。
S616,无线接入网络节点向移动管理网元发送上下文释放完成的消息。移动性管理网元从所述移动性管理连接状态转换到所述移动性管理空闲状态。
另外,本发明第四实施例还提供了一种网络状态管理方法,第一网络状态为协议数据单元会话处于激活状态,在激活状态下,SM上维护着完整的用户终端PDU会话的上下文,包括上下行数据的路由信息,存在SM控制下的该UE1的UPF和NG-RAN之间的NG3数据连接。所述第二网络状态为协议数据单元会话处于非激活状态,在非激活状态下,SM上的用户终端PDU会话的上下文删除了下行数据的路由信息,不存在SM控制下的该UE在UPF 和NG-RAN之间的NG3数据连接,或者SM上没有维护用户终端PDU会话的上下文,不存在SM控制下的该用户终端在UPF和NG-RAN之间的NG3数据连接。所述第三网络状态为非接入层连接的连接状态,所述第四网络状态为非接入层连接的空闲状态。无线接入网络节点首先当检测到所述用户终端的所有所述会话管理网元的协议数据单元会话从所述激活状态转换到所述非激活状态时,向所述移动性管理网元发送用户终端上下文释放请求;然后无线接入网络节点接收所述移动性管理网元发送的用户终端上下文释放响应,所述移动性管理网元从所述非接入层连接的连接状态转换到所述非接入层连接的空闲状态。与上述实施例类似,本发明实施例不再赘述。
请参考图7,图7是本发明第五实施例提出的一种网络状态管理方法的流程示意图。如图所示,本发明实施例中的方法包括:
S701,移动性管理网元接收会话管理网元发送的状态通知消息。
S702,所述移动性管理网元根据所述状态通知消息,确定所述会话管理网元是否从第一网络状态转换到第二网络状态。
S703,所述移动性管理网元当确定所述会话管理网元从所述第一网络状态转换到所述第二网络状态时,向无线接入网络节点发送用户终端上下文处理请求。
S704,所述移动性管理网元接收所述无线接入网络节点发送的用户终端上下文处理响应,所述用户终端上下文处理响应用于表示所述移动性管理网元从所述第三网络状态转换到所述第四网络状态。
以下通过第六实施例至第八实施例具体介绍上述实施例的实现过程:
请参考图8,图8是本发明第六实施例提供的一种网络状态管理方法的流程示意图,在发明实施例中,只要有一个网络切片激活,则会触发该网络切片的SM通知MM该网络切片进入了SM连接状态,从而触发MM去建立MM和RAN之间的NG2连接,从而使得MM进入连接状态,其中,所述第一网络状态为会话管理空闲状态,所述第二网络状态为会话管理连接状态,所述第三网络状态为移动性管理空闲状态,所述第四网络状态为移动性管理连接状态,具体流程如下:
S801,用户终端向无线接入网络节点发送网络切片的服务请求。
具体实现中,在用户终端发起服务请求之前,用户终端处于空闲状态,所有网络切片处于空闲状态,当UE需要发起某个网络切片的业务时,向无线接入网络节点发送网络切片的服务请求;或者,会话管理网元在接收到下行数据到达的通知消息之后可以向用户终端发送寻呼请求,用户终端接收到寻呼请求之后,向无线接入网络节点发送网络切片的服务请求。其中,用户终端可以通过初始化会话管理网元的消息来承载服务请求。
S802,无线接入网络节点向会话管理网元SM1发送网络切片的服务请求。
S803,会话管理网元SM1向无线接入网络节点发送上下文建立请求。
S804,无线接入网络节点根据上下文建立请求,与用户终端建立DRB(Data Radio Bearer,数据无线承载)连接。
S805,无线接入网络节点向会话管理网元SM1发送上下文建立响应。
S806,会话管理网元SM1配置用户面功能实体UPF1的用户面参数。
至此,通过S801-S806的操作步骤,建立起了RAN与SM1之间的NG2连接,RAN与UPF1之间的NG3连接,RAN与UE之间的DRB连接。
S807,会话管理网元SM1向移动性管理网元发送状态通知信息,其中,状态通知消息包括会话管理网元的连接状态;可选地,状态通知消息还可以包含用户终端的标识信息。
S807,移动性管理网元检测用户终端的会话管理网元的网络状态,当确定所述用户终端的所述会话管理网元从会话管理空闲状态转换到会话管理连接状态时,决定触发RAN去建立RAN与MM之间的网络连接。
S808,移动性管理网元向无线接入网络节点发送用户终端上下文建立请求。
S809,无线接入网络节点向移动性管理网元发送用户终端上下文建立响应,移动性管理网元从所述移动性管理空闲状态转换到所述移动性管理连接状态。
请参考图9,图9是本发明第七实施例提供的另一种网络状态管理方法的流程示意图,在发明实施例中,只有当UE的所有的网络切片都去激活了, 才会触发MM去释放MM与RAN之间的NG2连接,从而使得MM进入空闲状态,其中,所述第一网络状态为会话管理连接状态,所述第二网络状态为会话管理空闲状态,所述第三网络状态为移动性管理连接状态,所述第四网络状态为移动性管理空闲状态,具体流程如下:
S901,无线接入网络节点向会话管理网元SM1发送上下文释放请求。其中,在无线接入网络节点发送上下文释放请求之前,用户终端的多个网络切片均处于连接状态。
S902,会话管理网元SM1释放配置的用户面功能实体UPF1的用户面参数。
S903,会话管理网元SM1向无线接入网络节点发送上下文释放响应。
S904,无线接入网络节点释放网络切片Slice1对应的RAN与UE之间的DRB连接。
S905,无线接入网络节点向会话管理网元SM1发送上下文释放完成的消息。
S906,会话管理网元SM1向移动性管理网元发送状态通知消息,其中,状态通知消息包括会话管理网元SM1的空闲状态;可选地,状态通知消息还可以包括用户终端的标识信息。
S907,移动性管理网元检查除了当前需要去激活的网络切片Slice1,如果存在其他激活的网络切片Slice,则决定不释放MM与RAN之间的NG2连接。
至此,通过S901-S907的操作步骤,释放了RAN与SM1之间的NG2连接、RAN与UPF1之间的NG3连接、Slice1对应的RAN与UE之间的DRB连接。
S908,无线接入网络节点向会话管理网元SM2发送上下文释放请求。
S909,会话管理网元SM2释放配置的用户面功能实体UPF2的用户面参数。
S910,会话管理网元SM2向无线接入网络节点发送上下文释放响应。
S911,无线接入网络节点释放网络切片Slice2对应的RAN与UE之间的DRB连接;
S912,无线接入网络节点向会话管理网元SM2发送上下文释放完成的消息。
S913,会话管理网元SM2向移动性管理网元MM发送状态通知消息。
至此,通过S908-S913的操作步骤,释放了RAN与SM2之间的NG2连接、RAN与UPF2之间的NG3连接、Slice2对应的RAN与UE之间的DRB连接。
S914,移动性管理网元检查除了当前需要去激活的网络切片Slice2,是否存在其他激活的网络切片Slice,如果不存在其他激活的网络切片Slice,则决定不仅释放RAN与MM之间的连接,而且释放RAN与UE之间的RRC连接;
S915,移动性管理网元向无线接入网络节点发送上下文释放请求。
S916,无线接入网络节点释放RAN与UE之间的RRC连接。
S917,无线接入网络节点向移动性管理网元发送上下文释放响应,移动性管理网元从所述移动性管理连接状态转换到所述移动性管理空闲状态。
另外,本发明第八实施例还提供了一种网络状态管理方法,所述第一网络状态为协议数据单元会话处于激活状态,在激活状态下,SM上维护着完整的用户终端PDU会话的上下文,包括上下行数据的路由信息,存在SM控制下的该UE1的UPF和NG-RAN之间的NG3数据连接。所述第二网络状态为协议数据单元会话处于非激活状态,在非激活状态下,SM上的用户终端PDU会话的上下文删除了下行数据的路由信息,不存在SM控制下的该UE在UPF和NG-RAN之间的NG3数据连接,或者SM上没有维护用户终端PDU会话的上下文,不存在SM控制下的该用户终端在UPF和NG-RAN之间的NG3数据连接。所述第三网络状态为非接入层连接的连接状态,所述第四网络状态为非接入层连接的空闲状态;移动性管理网元首先当确定所述用户终端的所有所述会话管理网元的协议数据单元会话从所述激活状态转换到所述非激活状态时,向所述移无线接入网络节点发送用户终端上下文释放请求;然后接收所述无线接入网络节点发送的用户终端上下文释放响应,所述移动性管理网元从所述非接入层连接的连接状态转换到所述非接入层连接的空闲状态。与上述实施例类似,本发明实施例不再赘述。
请参考图10,图10是本发明第九实施例提供的一种寻呼方法的流程示意图。如图所示,本发明实施例中的方法包括:
S1001,会话管理网元SM2接收下行数据包到达的通知消息,在接收到下行数据包的通知消息之前,所有的网络切片均没有激活。
S1002,会话管理网元SM2向移动性管理网元发送位置请求。
S1003,移动性管理获取用户终端当前的网络状态。
S1004,移动性管理网元根据所述用户终端当前的网络状态,向所述会话管理网元发送位置响应信息。
具体实现中,如果S1003获取用户终端当前的网络状态为空闲状态,则S1104中的所述位置响应信息携带所述跟踪区域信息;如果S1003获取用户终端当前的网络状态为连接状态,则S1104中的所述位置响应信息携带所述无线接入网络节点的地址信息。
S1005,会话管理网元根据所述位置响应信息,确定是否向所述用户终端发送寻呼请求。
具体实现中,若所述会话管理网元SM2接收到的所述位置响应信息为所述跟踪区域信息,则确定所述用户终端当前处于空闲状态;当确定所述用户终端当前处于所述空闲状态时,执行步骤S1006-S1007,向所述用户终端发送寻呼请求,用户终端接收到寻呼请求之后,执行上述实施例S501-S509相同的步骤。
可选的,若所述会话管理网元SM2接收到的所述位置响应信息为所述无线接入网络节点的地址信息,则确定所述用户终端当前处于连接状态,其中,位置响应信息还可以包括移动性管理网元的连接状态信息;当确定所述用户终端当前处于连接状态时,则执行步骤S1008,直接向所述无线接入网络节点发送连接建立请求,进而建立网络切片的PDU会话连接,会话管理网元SM2从会话管理空闲状态转换到会话管理连接状态,进而触发移动性管理网元从所述移动性管理空闲状态转换到所述移动性管理连接状态。
可选的,若所述会话管理网元接收到的所述位置响应信息为所述无线接入网络节点的地址信息,则确定所述用户终端当前处于连接状态,其中,位 置响应信息还可以包括移动性管理网元的连接状态信息;当确定所述用户终端当前处于连接状态时,则执行步骤S1009-S1010,向所述用户终端发送携带有网络切片信息的寻呼请求,用户终端接收到携带有网络切片信息的寻呼请求之后,根据所述网络切片信息与多个网络切片中的目标网络切片建立连接,执行上述实施例S501-S509相同的步骤。
请参考图11,图11是本发明实施例提供的一种无线接入网络节点的结构示意图。如图所示,无线接入网络节点包括发送模块1101和接收模块1102,其中,发送模块1101和接收模块1102分别执行上述第一实施例至第四实施例中无线接入网络节点所执行的方法和功能,本发明实施例不再赘述。
请参考图12,图12是本发明实施例提供的一种移动性管理网元的结构示意图。如图所示,移动性管理网元包括接收模块1201、处理模块1202和发送模块1203,其中,接收模块1201、处理模块1202和发送模块1203分别执行上述第五实施例至第八实施例中移动性管理网元所执行的方法和功能,本发明实施例不再赘述。
请参考图13,图13是本发明实施例提供的一种会话管理网元的结构示意图。如图所示,会话管理网元包括发送模块1301、接收模块1302和处理模块1303,其中,发送模块1301、接收模块1302和处理模块1303分别执行上述第九实施例中会话管理网元所执行的方法和功能,本发明实施例不再赘述。
请参考图14,图14是本发明实施例提供的一种移动性管理网元的结构示意图。如图所示,移动性管理网元包括接收模块1401、获取模块1402和发送模块1403,其中,接收模块1401、获取模块1402和发送模块1403分别执行上述第九实施例中移动性管理网元所执行的方法和功能,本发明实施例不再赘述。
请继续参考图15,图15是本发明提出的一种网络状态管理设备的结构示意图。如图所示,该设备可以包括:至少一个处理器1501,例如CPU,至少一个网络接口1502,至少一个存储器1503和至少一个通信总线1504。 其中,通信总线1504用于实现这些组件之间的连接通信。其中,本发明实施例中设备的网络接口1502用于与其他节点设备进行信令或数据的通信。存储器1503可以是高速RAM存储器,也可以是非不稳定的存储器(non-volatile memory),例如至少一个磁盘存储器。存储器1503可选的还可以是至少一个位于远离前述处理器1501的存储装置。存储器1503中存储一组程序代码,且处理器1501执行存储器1503中上述无线接入网络节点所执行的程序。
具体的,处理器用于调用所述程序代码,执行以下操作:
当检测到用户终端的会话管理网元从第一网络状态转换到第二网络状态时,通过网络接口1502向移动性管理网元发送用户终端上下文处理请求;
网络接口1502接收所述移动性管理网元发送的用户终端上下文处理响应,所述用户终端上下文处理响应用于表示所述移动性管理网元从所述第三网络状态转换到所述第四网络状态。
进一步的,处理器还可以与存储器和网络接口相配合,执行本发明第一实施例至第四实施例中无线接入网络节点的操作。
请继续参考图16,图16是本发明提出的另一种网络状态管理设备的结构示意图。如图所示,该设备可以包括:至少一个处理器1601,例如CPU,至少一个网络接口1602,至少一个存储器1603和至少一个通信总线1604。其中,通信总线1604用于实现这些组件之间的连接通信。其中,本发明实施例中设备的网络接口1602用于与其他节点设备进行信令或数据的通信。存储器1603可以是高速RAM存储器,也可以是非不稳定的存储器(non-volatile memory),例如至少一个磁盘存储器。存储器1603可选的还可以是至少一个位于远离前述处理器1601的存储装置。存储器1603中存储一组程序代码,且处理器1601执行存储器1603中上述移动性管理网元所执行的程序。
通过网络接口1602接收会话管理网元发送的状态通知消息;
根据所述状态通知消息,确定所述会话管理网元是否从第一网络状态转 换到第二网络状态;
当确定所述会话管理网元从所述第一网络状态转换到所述第二网络状态时,网络接口1602向无线接入网络节点发送用户终端上下文处理请求;
通过网络接口1602接收所述无线接入网络节点发送的用户终端上下文处理响应,所述用户终端上下文处理响应用于表示所述移动性管理网元从所述第三网络状态转换到所述第四网络状态。
进一步的,处理器还可以与存储器和网络接口相配合,执行本发明第五实施例至第八实施例中移动性管理网元的操作。
请继续参考图17,图17是本发明提出的一种寻呼设备的结构示意图。如图所示,该设备可以包括:至少一个处理器1701,例如CPU,至少一个网络接口1702,至少一个存储器1703和至少一个通信总线1704。其中,通信总线1704用于实现这些组件之间的连接通信。其中,本发明实施例中设备的网络接口1702用于与其他节点设备进行信令或数据的通信。存储器1703可以是高速RAM存储器,也可以是非不稳定的存储器(non-volatile memory),例如至少一个磁盘存储器。存储器1703可选的还可以是至少一个位于远离前述处理器1701的存储装置。存储器1703中存储一组程序代码,且处理器1701执行所述存储器1703中存储的程序,且处理器1701执行存储器1703中上述会话管理网元所执行的程序。
当接收到下行数据包到达的通知消息时,通过网络接口1702向移动性管理网元发送位置请求;
通过网络接口1702接收所述移动性管理网元的位置响应信息;
根据所述位置响应信息,确定是否向所述用户终端发送寻呼请求。
进一步的,处理器还可以与存储器和网络接口相配合,执行本发明第九实施例中会话管理网元的操作。
请继续参考图18,图18是本发明提出的一种寻呼设备的结构示意图。如图所示,该设备可以包括:至少一个处理器1801,例如CPU,至少一个网络接口1802,至少一个存储器1803和至少一个通信总线1804。其中,通信总线1804用于实现这些组件之间的连接通信。其中,本发明实施例中设 备的网络接口1802用于与其他节点设备进行信令或数据的通信。存储器1803可以是高速RAM存储器,也可以是非不稳定的存储器(non-volatile memory),例如至少一个磁盘存储器。存储器1803可选的还可以是至少一个位于远离前述处理器1801的存储装置。存储器1803中存储一组程序代码,且处理器1801执行所述存储器1803中存储的程序,且处理器1701执行存储器1703中上述移动性管理网元所执行的程序。
通过网络接口1802接收会话管理网元发送的位置请求,所述位置请求由所述会话管理网元接收到下行数据包到达的通知消息时发送的;
获取用户终端当前的网络状态;
通过网络接口1802根据所述用户终端当前的网络状态,向所述会话管理网元发送位置响应信息,所述位置响应信息用于所述会话管理网元确定是否向所述用户终端发送寻呼请求。
进一步的,处理器还可以与存储器和网络接口相配合,执行本发明第九实施例中移动性管理网元的操作。
需要说明的是,对于前述的各个方法实施例,为了简单描述,故将其都表述为一系列的动作组合,但是本领域技术人员应该知悉,本发明并不受所描述的动作顺序的限制,因为依据本发明,某一些步骤可以采用其他顺序或者同时进行。其次,本领域技术人员也应该知悉,说明书中所描述的实施例均属于优选实施例,所涉及的动作和模块并不一定是本发明所必须的。
在上述实施例中,对各个实施例的描述都各有侧重,某个实施例中没有详细描述的部分,可以参见其他实施例的相关描述。
本领域普通技术人员可以理解上述实施例的各种方法中的全部或部分步骤是可以通过程序来指令相关的硬件来完成,该程序可以存储于一计算机可读存储介质中,存储介质可以包括:闪存盘、只读存储器(Read-Only Memory,ROM)、随机存取器(Random Access Memory,RAM)、磁盘或光盘等。
以上对本发明实施例所提供的内容下载方法及相关设备、系统进行了详细介绍,本文中应用了具体个例对本发明的原理及实施方式进行了阐述,以 上实施例的说明只是用于帮助理解本发明的方法及其核心思想;同时,对于本领域的一般技术人员,依据本发明的思想,在具体实施方式及应用范围上均会有改变之处,综上所述,本说明书内容不应理解为对本发明的限制。

Claims (30)

  1. 一种网络状态管理方法,其特征在于,所述方法包括:
    无线接入网络节点当检测到用户终端的会话管理网元从第一网络状态转换到第二网络状态时,向移动性管理网元发送用户终端上下文处理请求;
    所述无线接入网络节点接收所述移动性管理网元发送的用户终端上下文处理响应,所述用户终端上下文处理响应用于表示所述移动性管理网元从所述第三网络状态转换到所述第四网络状态。
  2. 如权利要求1所述的方法,其特征在于,所述第一网络状态为会话管理空闲状态,所述第二网络状态为会话管理连接状态,所述第三网络状态为移动性管理空闲状态,所述第四网络状态为移动性管理连接状态;
    所述方法包括:
    所述无线接入网络节点当检测到所述用户终端的所述会话管理网元从所述会话管理空闲状态转换到所述会话管理连接状态时,向所述移动性管理网元发送用户终端上下文建立请求;
    所述无线接入网络节点接收所述移动性管理网元发送的用户终端上下文建立响应,所述用户终端上下文建立响应用于表示所述移动性管理网元从所述移动性管理空闲状态转换到所述移动性管理连接状态。
  3. 如权利要求1所述的方法,其特征在于,所述第一网络状态为会话管理连接状态,所述第二网络状态为会话管理空闲状态,所述第三网络状态为移动性管理连接状态,所述第四网络状态为移动性管理空闲状态;
    所述方法包括:
    所述无线接入网络节点当检测到所述用户终端的所有所述会话管理网元从所述会话管理连接状态转换到所述会话管理空闲状态时,向所述移动性管理网元发送用户终端上下文释放请求;
    所述无线接入网络节点接收所述移动性管理网元发送的用户终端上下文 释放响应,所述用户终端上下文释放响应用于表示所述移动性管理网元从所述移动性管理连接状态转换到所述移动性管理空闲状态。
  4. 如权利要求1所述的方法,其特征在于,所述第一网络状态为协议数据单元会话处于激活状态,所述第二网络状态为协议数据单元会话处于非激活状态,所述第三网络状态为非接入层连接的连接状态,所述第四网络状态为非接入层连接的空闲状态;
    所述方法包括:
    所述无线接入网络节点当检测到所述用户终端的所有所述会话管理网元的协议数据单元会话从所述激活状态转换到所述非激活状态时,向所述移动性管理网元发送用户终端上下文释放请求;
    所述无线接入网络节点接收所述移动性管理网元发送的用户终端上下文释放响应,所述用户终端上下文释放响应用于表示所述移动性管理网元从所述非接入层连接的连接状态转换到所述非接入层连接的空闲状态。
  5. 一种网络状态管理方法,其特征在于,所述方法包括:
    移动性管理网元接收会话管理网元发送的状态通知消息;
    所述移动性管理网元根据所述状态通知消息,确定所述会话管理网元是否从第一网络状态转换到第二网络状态;
    所述移动性管理网元当确定所述会话管理网元从所述第一网络状态转换到所述第二网络状态时,向无线接入网络节点发送用户终端上下文处理请求;
    所述移动性管理网元接收所述无线接入网络节点发送的用户终端上下文处理响应,所述用户终端上下文处理响应用于表示所述移动性管理网元从所述第三网络状态转换到所述第四网络状态。
  6. 如权利要求5所述的方法,其特征在于,所述第一网络状态为会话管理空闲状态,所述第二网络状态为会话管理连接状态,所述第三网络状态为移动性管理空闲状态,所述第四网络状态为移动性管理连接状态;
    所述方法包括:
    所述移动性管理网元当确定所述用户终端的所述会话管理网元从会话管理空闲状态转换到会话管理连接状态时,向所述无线接入网络节点发送用户终端上下文建立请求;
    所述移动性管理网元接收所述无线接入网络节点发送的用户终端上下文建立响应,所述用户终端上下文建立响应用于表示所述移动性管理网元从所述移动性管理空闲状态转换到所述移动性管理连接状态。
  7. 如权利要求5所述的方法,其特征在于,所述第一网络状态为会话管理连接状态,所述第二网络状态为会话管理空闲状态,所述第三网络状态为移动性管理连接状态,所述第四网络状态为移动性管理空闲状态;
    所述方法包括:
    所述移动性管理网元当确定所述用户终端的所有所述会话管理网元从会话管理连接状态转换到会话管理空闲状态时,向所述无线接入网络节点发送用户终端上下文释放请求;
    所述移动性管理网元接收所述无线接入网络节点发送的用户终端上下文释放响应,所述用户终端上下文释放响应用于表示所述移动性管理网元从所述移动性管理连接状态转换到所述移动性管理空闲状态。
  8. 如权利要求5所述的方法,其特征在于,所述第一网络状态为协议数据单元会话处于激活状态,所述第二网络状态为协议数据单元会话处于非激活状态,所述第三网络状态为非接入层连接的连接状态,所述第四网络状态为非接入层连接的空闲状态;
    所述方法包括:
    所述移动性管理网元当确定所述用户终端的所有所述会话管理网元的协议数据单元会话从所述激活状态转换到所述非激活状态时,向所述移无线接入网络节点发送用户终端上下文释放请求;
    所述移动性管理网元接收所述无线接入网络节点发送的用户终端上下文释放响应,所述用户终端上下文释放响应用于表示所述移动性管理网元从所述非接入层连接的连接状态转换到所述非接入层连接的空闲状态。
  9. 一种寻呼方法,其特征在于,所述方法包括:
    会话管理网元当接收到下行数据包到达的通知消息时,向移动性管理网元发送位置请求;
    所述会话管理网元接收所述移动性管理网元的位置响应信息;
    所述会话管理网元根据所述位置响应信息,确定是否向所述用户终端发送寻呼请求。
  10. 如权利要求9所述的方法,其特征在于,所述位置响应信息包括跟踪区域信息;
    所述根据所述位置响应信息,确定是否向所述用户终端发送寻呼请求包括:
    若所述会话管理网元接收到的所述位置响应信息为所述跟踪区域信息,则确定所述用户终端当前处于空闲状态;
    当确定所述用户终端当前处于所述空闲状态时,向所述用户终端发送寻呼请求。
  11. 如权利要求9所述的方法,其特征在于,所述位置响应信息包括无线接入网络节点的地址信息;
    所述根据所述位置响应信息,确定是否向所述用户终端发送寻呼请求包括:
    若所述会话管理网元接收到的所述位置响应信息为所述无线接入网络节点的地址信息,则确定所述用户终端当前处于连接状态;
    当确定所述用户终端当前处于连接状态时,直接向所述无线接入网络节点发送连接建立请求。
  12. 如权利要求9所述的方法,其特征在于,所述位置响应信息包括无线接入网络节点的地址信息;
    所述根据所述位置响应信息,确定是否向所述用户终端发送寻呼请求包 括:
    若所述会话管理网元接收到的所述位置响应信息为所述无线接入网络节点的地址信息,则确定所述用户终端当前处于连接状态;
    当确定所述用户终端当前处于连接状态时,向所述用户终端发送携带有网络切片信息的寻呼请求,所述寻呼请求用于指示所述用户终端根据所述网络切片信息与多个网络切片中的目标网络切片建立连接。
  13. 一种寻呼方法,其特征在于,所述方法包括:
    移动性管理网元接收会话管理网元发送的位置请求,所述位置请求由所述会话管理网元接收到下行数据包到达的通知消息时发送的;
    所述移动性管理网元获取用户终端当前的网络状态;
    所述移动性管理网元根据所述用户终端当前的网络状态,向所述会话管理网元发送位置响应信息,所述位置响应信息用于所述会话管理网元确定是否向所述用户终端发送寻呼请求。
  14. 如权利要求13所述的方法,其特征在于,所述位置响应信息包括跟踪区域信息;
    所述根据所述用户终端当前的网络状态,向所述会话管理网元发送位置响应信息包括:
    当所述用户终端当前处于空闲状态时,向所述会话管理网元发送所述跟踪区域信息,所述跟踪区域信息用于指示所述会话管理网元向所述用户终端发送寻呼请求。
  15. 如权利要求13所述的方法,其特征在于,所述位置响应信息包括无线接入网络节点的地址信息;
    所述根据所述用户终端当前的网络状态,向所述会话管理网元发送位置响应信息包括:
    当所述用户终端当前处于连接状态时,向所述会话管理网元发送所述无线接入网络节点的地址信息,所述无线接入网络节点的地址信息用于指示所 述会话管理网元直接向所述无线接入网络节点发送连接建立请求。
  16. 如权利要求13所述的方法,其特征在于,所述位置响应信息包括无线接入网络节点的地址信息;
    所述根据所述用户终端当前的网络状态,向所述会话管理网元发送位置响应信息包括:
    当所述用户终端当前处于连接状态时,向所述会话管理网元发送所述无线接入网络节点的地址信息,所述无线接入网络节点的地址信息用于指示所述会话管理网元向所述用户终端发送携带有网络切片信息的寻呼请求,所述寻呼请求用于指示所述用户终端根据所述网络切片信息与多个网络切片中的目标网络切片建立连接。
  17. 一种无线接入网络节点,其特征在于,所述无线接入网络节点包括:
    发送模块,用于当检测到用户终端的会话管理网元从第一网络状态转换到第二网络状态时,向移动性管理网元发送用户终端上下文处理请求;
    接收模块,用于接收所述移动性管理网元发送的用户终端上下文处理响应,所述用户终端上下文处理响应用于表示所述移动性管理网元从所述第三网络状态转换到所述第四网络状态。
  18. 一种移动性管理网元,其特征在于,所述移动性管理网元包括:
    接收模块,用于接收会话管理网元发送的状态通知消息;
    处理模块,用于根据所述状态通知消息,确定所述会话管理网元是否从第一网络状态转换到第二网络状态;
    发送模块,用于当确定所述会话管理网元从所述第一网络状态转换到所述第二网络状态时,向无线接入网络节点发送用户终端上下文处理请求;
    所述接收模块,还用于接收所述无线接入网络节点发送的用户终端上下文处理响应,所述用户终端上下文处理响应用于表示所述移动性管理网元从所述第三网络状态转换到所述第四网络状态。
  19. 一种会话管理网元,其特征在于,所述会话管理网元包括:
    发送模块,用于当接收到下行数据包到达的通知消息时,向移动性管理网元发送位置请求;
    接收模块,用于接收所述移动性管理网元的位置响应信息;
    处理模块,用于根据所述位置响应信息,确定是否向所述用户终端发送寻呼请求。
  20. 一种网络状态管理设备,其特征在于,包括:存储器、通信总线以及处理器,其中,所述存储器用于存储程序代码,所述处理器用于调用所述程序代码,执行以下操作:
    当检测到用户终端的会话管理网元从第一网络状态转换到第二网络状态时,向移动性管理网元发送用户终端上下文处理请求;
    接收所述移动性管理网元发送的用户终端上下文处理响应,所述用户终端上下文处理响应用于表示所述移动性管理网元从所述第三网络状态转换到所述第四网络状态。
  21. 如权利要求20所述的设备,其特征在于,所述第一网络状态为会话管理空闲状态,所述第二网络状态为会话管理连接状态,所述第三网络状态为移动性管理空闲状态,所述第四网络状态为移动性管理连接状态;
    所述处理器还用于执行如下操作步骤:
    当检测到所述用户终端的所述会话管理网元从所述会话管理空闲状态转换到所述会话管理连接状态时,向所述移动性管理网元发送用户终端上下文建立请求;
    接收所述移动性管理网元发送的用户终端上下文建立响应,所述用户终端上下文建立响应用于表示所述移动性管理网元从所述移动性管理空闲状态转换到所述移动性管理连接状态。
  22. 如权利要求20所述的设备,其特征在于,所述第一网络状态为会话管理连接状态,所述第二网络状态为会话管理空闲状态,所述第三网络状态 为移动性管理连接状态,所述第四网络状态为移动性管理空闲状态;
    所述处理器还用于执行如下操作步骤:
    所述无线接入网络节点当检测到所述用户终端的所有所述会话管理网元从所述会话管理连接状态转换到所述会话管理空闲状态时,向所述移动性管理网元发送用户终端上下文释放请求;
    所述无线接入网络节点接收所述移动性管理网元发送的用户终端上下文释放响应,所述用户终端上下文释放响应用于表示所述移动性管理网元从所述移动性管理连接状态转换到所述移动性管理空闲状态。
  23. 一种网络状态管理设备,其特征在于,包括:存储器、通信总线以及处理器,其中,所述存储器用于存储程序代码,所述处理器用于调用所述程序代码,执行以下操作:
    接收会话管理网元发送的状态通知消息;
    根据所述状态通知消息,确定所述会话管理网元是否从第一网络状态转换到第二网络状态;
    当确定所述会话管理网元从所述第一网络状态转换到所述第二网络状态时,向无线接入网络节点发送用户终端上下文处理请求;
    接收所述无线接入网络节点发送的用户终端上下文处理响应,所述用户终端上下文处理响应用于表示所述移动性管理网元从所述第三网络状态转换到所述第四网络状态。
  24. 如权利要求23所述的设备,其特征在于,所述第一网络状态为会话管理空闲状态,所述第二网络状态为会话管理连接状态,所述第三网络状态为移动性管理空闲状态,所述第四网络状态为移动性管理连接状态;
    所述处理器还用于执行如下操作步骤:
    当确定所述用户终端的所述会话管理网元从会话管理空闲状态转换到会话管理连接状态时,向所述无线接入网络节点发送用户终端上下文建立请求;
    接收所述无线接入网络节点发送的用户终端上下文建立响应,所述用户终端上下文建立响应用于表示所述移动性管理网元从所述移动性管理空闲状 态转换到所述移动性管理连接状态。
  25. 如权利要求23所述的设备,其特征在于,所述第一网络状态为会话管理连接状态,所述第二网络状态为会话管理空闲状态,所述第三网络状态为移动性管理连接状态,所述第四网络状态为移动性管理空闲状态;
    所述处理器还用于执行如下操作步骤:
    当确定所述用户终端的所有所述会话管理网元从会话管理连接状态转换到会话管理空闲状态时,向所述无线接入网络节点发送用户终端上下文释放请求;
    接收所述无线接入网络节点发送的用户终端上下文释放响应,所述用户终端上下文释放响应用于表示所述移动性管理网元从所述移动性管理连接状态转换到所述移动性管理空闲状态。
  26. 如权利要求23所述的设备,其特征在于,所述第一网络状态为协议数据单元会话处于激活状态,所述第二网络状态为协议数据单元会话处于非激活状态,所述第三网络状态为非接入层连接的连接状态,所述第四网络状态为非接入层连接的空闲状态;
    所述处理器还用于执行如下操作步骤:
    当确定所述用户终端的所有所述会话管理网元的协议数据单元会话从所述激活状态转换到所述非激活状态时,向所述无线接入网络节点发送用户终端上下文释放请求;
    接收所述无线接入网络节点发送的用户终端上下文释放响应,所述用户终端上下文释放响应用于表示所述移动性管理网元从所述非接入层连接的连接状态转换到所述非接入层连接的空闲状态。
  27. 一种寻呼设备,其特征在于,包括:存储器、通信总线以及处理器,其中,所述存储器用于存储程序代码,所述处理器用于调用所述程序代码,执行以下操作:
    当接收到下行数据包到达的通知消息时,向移动性管理网元发送位置请 求;
    接收所述移动性管理网元的位置响应信息;
    根据所述位置响应信息,确定是否向所述用户终端发送寻呼请求。
  28. 如权利要求27所述的设备,其特征在于,所述位置响应信息包括跟踪区域信息;
    所述处理器还用于执行如下操作步骤:
    若所述会话管理网元接收到的所述位置响应信息为所述跟踪区域信息,则确定所述用户终端当前处于空闲状态;
    当确定所述用户终端当前处于所述空闲状态时,向所述用户终端发送寻呼请求。
  29. 如权利要求27所述的设备,其特征在于,所述位置响应信息包括无线接入网络节点的地址信息;
    所述处理器还用于执行如下操作步骤:
    若所述会话管理网元接收到的所述位置响应信息为所述无线接入网络节点的地址信息,则确定所述用户终端当前处于连接状态;
    当确定所述用户终端当前处于连接状态时,直接向所述无线接入网络节点发送连接建立请求。
  30. 如权利要求27所述的设备,其特征在于,所述位置响应信息包括无线接入网络节点的地址信息;
    所述处理器还用于执行如下操作步骤:
    若所述会话管理网元接收到的所述位置响应信息为所述无线接入网络节点的地址信息,则确定所述用户终端当前处于连接状态;
    当确定所述用户终端当前处于连接状态时,向所述用户终端发送携带有网络切片信息的寻呼请求,所述寻呼请求用于指示所述用户终端根据所述网络切片信息与多个网络切片中的目标网络切片建立连接。
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