CN117793942A

CN117793942A - Information transmission method, device and equipment

Info

Publication number: CN117793942A
Application number: CN202211146431.XA
Authority: CN
Inventors: 宋雅琴; 程志密
Original assignee: Datang Mobile Communications Equipment Co Ltd
Current assignee: Datang Mobile Communications Equipment Co Ltd
Priority date: 2022-09-20
Filing date: 2022-09-20
Publication date: 2024-03-29

Abstract

The application provides an information transmission method, an information transmission device and information transmission equipment, wherein the information transmission method is applied to a target session management functional entity and comprises the following steps: receiving a session context creation request message sent by a target access and mobility management function entity; creating a request message according to the session context to obtain a mobility management context of at least one session; performing mobility management according to the mobility management context; wherein the mobility management context comprises: at least one of an access management context and a session management context. The scheme can support to realize that one-time mobility management for the cross-distributed network node can be carried out for at least one session, and avoids that each time of mobility management can only be carried out for one session, thereby improving data migration efficiency, reducing switching time delay, and well solving the problems of low data migration efficiency and high switching time delay existing in the information transmission scheme for the mobility management in the prior art.

Description

Information transmission method, device and equipment

Technical Field

The present disclosure relates to the field of communications technologies, and in particular, to an information transmission method, apparatus, and device.

Background

The current native design of the 5G mobile communication network system is controlled in a centralized manner, with the development of the network, the trend of the 6G network is a network architecture combining centralized and distributed manner, and the 6G network extends more network functions to the network edge to construct distributed isomorphic nodes with different functional levels, and each distributed network node has complete control and data forwarding functions.

Aiming at the problem of UE mobility management among cross-distributed network nodes of a 6G distributed network, if a traditional user context migration mode with session granularity is adopted, the problems of low data migration efficiency, high switching delay of UE (terminal) and the like are caused, and the problems of untimely switching, service interruption and the like are possibly caused when the UE moves rapidly.

By the method, although the problem of cross-domain mobility management can be solved by the existing method, the problems of low data migration efficiency, high switching time delay and the like can be brought to user context switching based on session granularity. In the prior art, only session granularity mobility management can be supported, and in particular, in the prior art, mobility management can only be performed for one session at a time.

In summary, the information transmission scheme for mobility management in the prior art can only be performed for one session at a time, which results in problems of low data migration efficiency, high handover delay and the like.

Disclosure of Invention

The invention aims to provide an information transmission method, device and equipment, which are used for solving the problems of low data migration efficiency and high switching time delay existing in an information transmission scheme aiming at mobility management in the prior art.

In order to solve the above technical problems, an embodiment of the present application provides an information transmission method, which is applied to a target session management functional entity, including:

receiving a session context creation request message sent by a target access and mobility management function entity;

creating a request message according to the session context to obtain a mobility management context of at least one session;

performing mobility management according to the mobility management context;

wherein the mobility management context comprises: at least one of an access management context and a session management context.

Optionally, the creating the request message according to the session context obtains a mobility management context of at least one session, including:

acquiring the mobility management context of at least one session from the session context creation request message under the condition that the session context creation request message carries the mobility management context of the at least one session;

Transmitting a session context request message for at least one session to a target repository entity in case the session context creation request message does not carry a mobility management context of the session; and receiving a session context response message fed back by the target warehouse entity, wherein the session context response message carries the mobility management context of the at least one session.

Optionally, the target warehouse entity is deployed by at least one of:

newly adding at least one network function as a warehouse entity on a control plane;

expanding the defined network function as a warehouse entity;

wherein one repository entity is for storing at least one of an access management context and a session management context.

The embodiment of the application also provides an information transmission method which is applied to the target access and mobility management functional entity and comprises the following steps:

receiving a switching resource allocation request message for at least one session, which is sent by a source access and mobility management functional entity;

according to the switching resource allocation request message, a session context creation request message is sent to a target session management function entity corresponding to each session;

Wherein the session context creation request message carries at least one mobility management context of the session; or, the session context creation request message does not carry the mobility management context of the session;

the mobility management context includes: at least one of an access management context and a session management context.

Optionally, when the session context creation request message carries at least one mobility management context of the session, before sending the session context creation request message to the target session management function entity corresponding to each session according to the handover resource allocation request message, the method further includes:

according to the first information carried by the switching resource allocation request message, a first context acquisition request message is sent to a target warehouse entity;

receiving a first context acquisition response message fed back by the target warehouse entity;

wherein the first information includes: at least one of terminal identification information, session identification information of at least one session, and node identification information of a network node corresponding to the at least one session;

the first context acquisition request message carries at least one of the terminal identification information, session identification information of at least one session and node identification information of a network node corresponding to the at least one session;

The first context acquisition response message carries the mobility management context of at least one session requested by the first context acquisition request message.

Optionally, the handover resource allocation request message carries at least one mobility management context of the session.

Optionally, in the case that the session context creation request message does not carry a mobility management context of a session, before sending the session context creation request message to a target session management function entity corresponding to each session according to the handover resource allocation request message, the method further includes:

according to the second information carried by the switching resource allocation request message, sending a context acquisition notice to a target warehouse entity;

wherein the second information includes: at least one of terminal identification information, session identification information of at least one session, and node identification information of a network node corresponding to the at least one session;

the context acquisition notification carries at least one of the terminal identification information, session identification information of at least one session, and node identification information of a network node corresponding to the at least one session.

Optionally, the second information further includes: an access management context corresponding to the at least one session; the context acquisition notification is used for notifying the target warehouse entity to acquire a session management context and/or is not used for notifying the target warehouse entity to acquire an access management context contained in the second information.

Optionally, the target warehouse entity is deployed by at least one of:

expanding the defined network function as a warehouse entity;

The embodiment of the application also provides an information transmission method, which is applied to the target warehouse entity and comprises the following steps:

receiving third information sent by a target access and mobility management functional entity;

performing a context acquisition operation according to the third information;

wherein the third information includes: a first context acquisition request message; the first context acquisition request message carries at least one of terminal identification information, session identification information of at least one session and node identification information of a network node corresponding to the at least one session;

Alternatively, the third information includes: the context acquires a notification; the context acquisition notification carries at least one of terminal identification information, session identification information of at least one session, and node identification information of a network node corresponding to the at least one session.

Optionally, in a case where the third information includes the first context acquisition request message, performing a context acquisition operation according to the third information includes:

sending a second context acquisition request message to a source warehouse entity according to the first context acquisition request message under the condition that the target warehouse entity does not store the mobility management context requested by the first context acquisition request message;

receiving a second context acquisition response message fed back by the source warehouse entity;

the second context obtaining request message carries at least one of the terminal identification information, session identification information of at least one session and node identification information of a network node corresponding to the at least one session;

the second context acquisition response message carries the mobility management context of at least one session requested by the second context acquisition request message; the mobility management context includes: at least one of an access management context and a session management context.

Optionally, after performing the context obtaining operation according to the third information, the method further includes:

sending a first context acquisition response message to the target access and mobility management functional entity according to the second context acquisition response message;

Optionally, the sending, according to the first context acquisition request message, a second context acquisition request message to a source repository entity includes:

according to the information carried by the first context acquisition request message, determining the related information of the corresponding source warehouse entity;

and sending a second context acquisition request message to the source warehouse entity according to the related information of the source warehouse entity.

Optionally, in a case where the third information includes a context acquisition notification, performing a context acquisition operation according to the third information includes:

according to the context acquisition notification, a third context acquisition request message is sent to a source warehouse entity;

receiving a third context acquisition response message fed back by the source warehouse entity;

The third context obtaining request message carries at least one of the terminal identification information, session identification information of at least one session and node identification information of a network node corresponding to the at least one session;

the third context acquisition response message carries the mobility management context of at least one session requested by the third context acquisition request message;

Optionally, the first warehouse entity is deployed by at least one of:

expanding the defined network function as a warehouse entity;

wherein one warehouse entity is configured to store at least one of an access management context and a session management context;

the first warehouse entity includes a target warehouse entity and/or a source warehouse entity.

The embodiment of the application also provides an information transmission method, which is applied to the source warehouse entity and comprises the following steps:

receiving a context acquisition request message sent by a first entity;

sending a context acquisition response message to the first entity according to the context acquisition request message;

Wherein the first entity comprises: a target warehouse entity, the context acquisition request message comprising: a second context acquisition request message; the context acquisition response message includes: the second context acquires a response message; alternatively, the context acquisition request message includes: a third context acquisition request message; the context acquisition response message includes: the third context obtains a response message;

alternatively, the first entity includes: the source access and mobility management function entity, the context acquisition request message includes: a fourth context acquisition request message; the context acquisition response message includes: a fourth context acquisition response message;

the context acquisition request message carries at least one of terminal identification information, session identification information of at least one session and node identification information of a network node corresponding to the at least one session; the context acquisition response message carries the mobility management context of at least one session requested by the context acquisition request message;

Optionally, the first warehouse entity is deployed by at least one of:

expanding the defined network function as a warehouse entity;

The embodiment of the application also provides an information transmission method applied to the source access and mobility management entity, comprising the following steps:

sending a fourth context acquisition request message to the source warehouse entity;

receiving a fourth context acquisition response message fed back by the source warehouse entity;

according to the fourth context obtaining response message, sending a switching resource allocation request message aiming at least one session to a target access and mobility management functional entity;

the fourth context obtaining request message carries at least one of terminal identification information, session identification information of at least one session and node identification information of a network node corresponding to the at least one session; the fourth context acquisition response message carries the mobility management context of at least one session requested by the fourth context acquisition request message;

The mobility management context includes: at least one of an access management context and a session management context;

the handover resource allocation request message carries a mobility management context for at least one session.

Optionally, the source warehouse entity is deployed by at least one of:

expanding the defined network function as a warehouse entity;

The embodiment of the application also provides an information transmission device, which is a target session management functional entity, and comprises a memory, a transceiver and a processor:

a memory for storing a computer program; a transceiver for transceiving data under control of the processor; a processor for reading the computer program in the memory and performing the following operations:

receiving a session context creation request message sent by a target access and mobility management function entity through the transceiver;

Performing mobility management according to the mobility management context;

transmitting, by the transceiver, a session context request message for at least one session to a target repository entity, in case the session context creation request message does not carry a mobility management context for the session; and receiving a session context response message fed back by the target warehouse entity through the transceiver, wherein the session context response message carries the mobility management context of the at least one session.

Optionally, the target warehouse entity is deployed by at least one of:

Expanding the defined network function as a warehouse entity;

The embodiment of the application also provides information transmission equipment, which is a target access and mobility management functional entity and comprises a memory, a transceiver and a processor:

receiving, by the transceiver, a handover resource allocation request message for at least one session sent by a source access and mobility management function entity;

transmitting, by the transceiver, a session context creation request message to a target session management function entity corresponding to each session according to the handover resource allocation request message;

Optionally, the operations further include:

under the condition that the session context creation request message carries at least one mobility management context of the session, before sending the session context creation request message to a target session management function entity corresponding to each session according to the handover resource allocation request message, sending a first context acquisition request message to a target warehouse entity according to first information carried by the handover resource allocation request message through the transceiver;

receiving, by the transceiver, a first context acquisition response message fed back by the target warehouse entity;

Optionally, the operations further include:

under the condition that the session context creation request message does not carry the mobility management context of the session, before the session context creation request message is sent to the target session management function entity corresponding to each session according to the handover resource allocation request message, sending a context acquisition notification to the target warehouse entity according to second information carried by the handover resource allocation request message through the transceiver;

Optionally, the target warehouse entity is deployed by at least one of:

expanding the defined network function as a warehouse entity;

The embodiment of the application also provides information transmission equipment, which is a target warehouse entity and comprises a memory, a transceiver and a processor:

receiving third information sent by a target access and mobility management functional entity through the transceiver;

Performing a context acquisition operation according to the third information;

in the case that the target warehouse entity does not store the mobility management context requested by the first context acquisition request message, sending, by the transceiver, a second context acquisition request message to a source warehouse entity according to the first context acquisition request message;

receiving, by the transceiver, a second context acquisition response message fed back by the source warehouse entity;

Optionally, the operations further include:

after performing a context acquisition operation according to the third information, sending, by the transceiver, a first context acquisition response message to the target access and mobility management function entity according to the second context acquisition response message;

sending, by the transceiver, a third context acquisition request message to a source warehouse entity according to the context acquisition notification;

receiving, by the transceiver, a third context acquisition response message fed back by the source warehouse entity;

Optionally, the first warehouse entity is deployed by at least one of:

expanding the defined network function as a warehouse entity;

The embodiment of the application also provides information transmission equipment, which is a source warehouse entity and comprises a memory, a transceiver and a processor:

receiving, by the transceiver, a context acquisition request message sent by a first entity;

sending, by the transceiver, a context acquisition response message to the first entity according to the context acquisition request message;

Optionally, the first warehouse entity is deployed by at least one of:

expanding the defined network function as a warehouse entity;

The embodiment of the application also provides information transmission equipment, which is a source access and mobility management entity and comprises a memory, a transceiver and a processor:

sending, by the transceiver, a fourth context acquisition request message to a source repository entity;

receiving, by the transceiver, a fourth context acquisition response message fed back by the source warehouse entity;

acquiring, by the transceiver, a response message according to the fourth context, and sending a handover resource allocation request message for at least one session to a target access and mobility management function entity;

Optionally, the source warehouse entity is deployed by at least one of:

expanding the defined network function as a warehouse entity;

The embodiment of the application also provides an information transmission device, which is applied to the target session management functional entity and comprises the following components:

a first receiving unit, configured to receive a session context creation request message sent by a target access and mobility management function entity;

a first processing unit, configured to create a request message according to the session context, and obtain a mobility management context of at least one session;

the second processing unit is used for carrying out mobility management according to the mobility management context;

Optionally, the target warehouse entity is deployed by at least one of:

expanding the defined network function as a warehouse entity;

The embodiment of the application also provides an information transmission device, which is applied to the target access and mobility management functional entity and comprises the following components:

A second receiving unit, configured to receive a handover resource allocation request message for at least one session sent by a source access and mobility management function entity;

a first sending unit, configured to send a session context creation request message to a target session management function entity corresponding to each session according to the handover resource allocation request message;

Optionally, the method further comprises:

a second sending unit, configured to send, when the session context creation request message carries at least one mobility management context of the session, a first context acquisition request message to a target repository entity according to first information carried by the handover resource allocation request message before sending the session context creation request message to a target session management function entity corresponding to each session according to the handover resource allocation request message;

A third receiving unit, configured to receive a first context acquisition response message fed back by the target warehouse entity;

Optionally, the method further comprises:

a third sending unit, configured to send, when the session context creation request message does not carry a mobility management context of a session, a context acquisition notification to a target repository entity according to second information carried by the handover resource allocation request message before sending the session context creation request message to a target session management function entity corresponding to each session according to the handover resource allocation request message;

Optionally, the target warehouse entity is deployed by at least one of:

expanding the defined network function as a warehouse entity;

The embodiment of the application also provides an information transmission device, which is applied to the target warehouse entity and comprises the following components:

A fourth receiving unit, configured to receive third information sent by the target access and mobility management function entity;

the third processing unit is used for performing context acquisition operation according to the third information;

Optionally, the method further comprises:

a fourth sending unit, configured to send a first context acquisition response message to the target access and mobility management function entity according to the second context acquisition response message after performing a context acquisition operation according to the third information;

Optionally, the first warehouse entity is deployed by at least one of:

expanding the defined network function as a warehouse entity;

The embodiment of the application also provides an information transmission device, which is applied to a source warehouse entity and comprises:

a fifth receiving unit, configured to receive a context acquisition request message sent by the first entity;

a fifth sending unit, configured to send a context acquisition response message to the first entity according to the context acquisition request message;

Optionally, the first warehouse entity is deployed by at least one of:

expanding the defined network function as a warehouse entity;

The embodiment of the application also provides an information transmission device, which is applied to a source access and mobility management entity and comprises the following components:

a sixth sending unit, configured to send a fourth context acquisition request message to the source repository entity;

a sixth receiving unit, configured to receive a fourth context acquisition response message fed back by the source repository entity;

A seventh sending unit, configured to obtain a response message according to the fourth context, and send a handover resource allocation request message for at least one session to a target access and mobility management function entity;

Optionally, the source warehouse entity is deployed by at least one of:

expanding the defined network function as a warehouse entity;

Embodiments of the present application also provide a processor-readable storage medium storing a computer program for causing the processor to perform the above-described method.

The beneficial effects of the technical scheme of the application are as follows:

in the above scheme, the information transmission method receives the session context creation request message sent by the target access and mobility management function entity; creating a request message according to the session context to obtain a mobility management context of at least one session; performing mobility management according to the mobility management context; wherein the mobility management context comprises: at least one of an access management context and a session management context; the method can support to realize that one-time mobility management for the cross-distributed network node can be carried out for at least one session, and avoid that each time of mobility management can only be carried out for one session, thereby improving data migration efficiency, reducing switching time delay, and well solving the problems of low data migration efficiency and high switching time delay existing in the information transmission scheme for mobility management in the prior art.

Drawings

Fig. 1 is a schematic diagram of a wireless communication system architecture according to an embodiment of the present application;

FIG. 2 is a schematic diagram of a distributed autonomous 6G system architecture according to an embodiment of the present application;

fig. 3 is a schematic flow chart of an information transmission method according to an embodiment of the present application;

fig. 4 is a second schematic flow chart of an information transmission method according to an embodiment of the present application;

fig. 5 is a flowchart of an information transmission method according to an embodiment of the present application;

fig. 6 is a flowchart of an information transmission method according to an embodiment of the present application;

fig. 7 is a flowchart of an information transmission method according to an embodiment of the present application;

fig. 8 is a schematic diagram of a specific implementation flow of an information transmission method according to an embodiment of the present application;

fig. 9 is a second flowchart of an implementation of the information transmission method in the embodiment of the present application;

fig. 10 is a schematic diagram of a specific implementation flow of an information transmission method according to an embodiment of the present application;

fig. 11 is a schematic structural diagram of an information transmission device according to an embodiment of the present application;

fig. 12 is a schematic diagram of a second information transmission device structure according to an embodiment of the present application;

fig. 13 is a schematic diagram of an information transmission device according to an embodiment of the present application;

fig. 14 is a schematic structural diagram of an information transmission device according to an embodiment of the present application;

fig. 15 is a schematic diagram of an information transmission device according to an embodiment of the present application;

Fig. 16 is a schematic structural diagram of an information transmission device according to an embodiment of the present application;

fig. 17 is a schematic diagram of a second information transmission device according to an embodiment of the present application;

fig. 18 is a schematic diagram III of an information transmission device according to an embodiment of the present application;

fig. 19 is a schematic diagram of an information transmission device according to an embodiment of the present application;

fig. 20 is a schematic diagram of an information transmission device according to an embodiment of the present application.

Detailed Description

The following description of the technical solutions in the embodiments of the present application will be made clearly and completely with reference to the accompanying drawings in the embodiments of the present application, and it is apparent that the described embodiments are only some embodiments of the present application, but not all embodiments. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the present disclosure, are within the scope of the present disclosure.

In the embodiment of the application, the term "and/or" describes the association relationship of the association objects, which means that three relationships may exist, for example, a and/or B may be represented: a exists alone, A and B exist together, and B exists alone. The character "/" generally indicates that the context-dependent object is an "or" relationship.

The term "plurality" in the embodiments of the present application means two or more, and other adjectives are similar thereto.

The technical scheme provided by the embodiment of the application can be suitable for various systems, especially a 5G system. For example, suitable systems may be global system for mobile communications (global system of mobile communication, GSM), code division multiple access (code division multiple access, CDMA), wideband code division multiple access (Wideband Code Division Multiple Access, WCDMA) universal packet Radio service (general packet Radio service, GPRS), long term evolution (long term evolution, LTE), LTE frequency division duplex (frequency division duplex, FDD), LTE time division duplex (time division duplex, TDD), long term evolution-advanced (long term evolution advanced, LTE-a), universal mobile system (universal mobile telecommunication system, UMTS), worldwide interoperability for microwave access (worldwide interoperability for microwave access, wiMAX), 5G New air interface (New Radio, NR), and the like. Terminal devices and network devices are included in these various systems. Core network parts such as evolved packet system (Evolved Packet System, EPS), 5G system (5 GS) etc. may also be included in the system.

Fig. 1 shows a block diagram of a wireless communication system to which embodiments of the present application are applicable. A wireless communication system includes a terminal device (also simply referred to as a terminal) and a network device.

The terminal device according to the embodiments of the present application may be a device that provides voice and/or data connectivity to a user, a handheld device with a wireless connection function, or other processing device connected to a wireless modem, etc. The names of the terminal devices may also be different in different systems, for example in a 5G system, the terminal devices may be referred to as User Equipment (UE). The wireless terminal device may communicate with one or more Core Networks (CNs) via a radio access Network (Radio Access Network, RAN), which may be mobile terminal devices such as mobile phones (or "cellular" phones) and computers with mobile terminal devices, e.g., portable, pocket, hand-held, computer-built-in or vehicle-mounted mobile devices that exchange voice and/or data with the radio access Network. Such as personal communication services (Personal Communication Service, PCS) phones, cordless phones, session initiation protocol (Session Initiated Protocol, SIP) phones, wireless local loop (Wireless Local Loop, WLL) stations, personal digital assistants (Personal Digital Assistant, PDAs), and the like. The wireless terminal device may also be referred to as a system, subscriber unit (subscriber unit), subscriber station (subscriber station), mobile station (mobile), remote station (remote station), access point (access point), remote terminal device (remote terminal), access terminal device (access terminal), user terminal device (user terminal), user agent (user agent), user equipment (user device), and the embodiments of the present application are not limited.

The network device according to the embodiment of the present application may be a base station, where the base station may include a plurality of cells for providing services for a terminal. A base station may also be called an access point or may be a device in an access network that communicates over the air-interface, through one or more sectors, with wireless terminal devices, or other names, depending on the particular application. The network device may be operable to exchange received air frames with internet protocol (Internet Protocol, IP) packets as a router between the wireless terminal device and the rest of the access network, which may include an Internet Protocol (IP) communication network. The network device may also coordinate attribute management for the air interface. For example, the network device according to the embodiments of the present application may be a network device (Base Transceiver Station, BTS) in a global system for mobile communications (Global System for Mobile communications, GSM) or code division multiple access (Code Division Multiple Access, CDMA), a network device (NodeB) in a wideband code division multiple access (Wide-band Code Division Multiple Access, WCDMA), an evolved network device (evolutional Node B, eNB or e-NodeB) in a long term evolution (long term evolution, LTE) system, a 5G base station (gNB) in a 5G network architecture (next generation system), a home evolved base station (Home evolved Node B, heNB), a relay node (relay node), a home base station (femto), a pico base station (pico), and the like. In some network structures, the network device may include a Centralized Unit (CU) node and a Distributed Unit (DU) node, which may also be geographically separated.

Multiple-input Multiple-output (Multi Input Multi Output, MIMO) transmissions may each be made between a network device and a terminal device using one or more antennas, and the MIMO transmissions may be Single User MIMO (SU-MIMO) or Multiple User MIMO (MU-MIMO). The MIMO transmission may be 2D-MIMO, 3D-MIMO, FD-MIMO, or massive-MIMO, or may be diversity transmission, precoding transmission, beamforming transmission, or the like, depending on the form and number of the root antenna combinations.

The following first describes what the scheme provided in the embodiments of the present application relates to.

Regarding the 6G distributed architecture trend:

an important trend in the development of 6G networks is the centralized and distributed network architecture. The network architecture primary design of 5G and the previous generations is controlled in a centralized way, with the development of the network, the dual driving force of service development and technical development is oriented, the design of the 6G network needs to consider a distributed architecture, and the control of the 6G network is oriented to distributed gradual evolution.

Specifically, the 6G network is oriented to diversified scenes of sky, land and sea and network performance requirements, and the centralized network architecture cannot uniformly meet all scenes. To cope with this challenge, the 6G network architecture needs to go beyond centralized control, gradually evolve towards a distributed architecture, extend more network functions to the network edge, and construct distributed homogeneous micro Cloud units (SCUs) with different functional levels, each of which (corresponding to the above-mentioned distributed network nodes) is self-contained, with all functions of complete control and data forwarding. The multiple micro cloud units can form an autonomous micro network according to service requirements, and network services can be provided in a targeted manner according to requirements of specific service scenes, user scales, geographic environments and the like. In particular, with respect to a distributed autonomous 6G system architecture, reference may be made to fig. 2.

Based on the above, the embodiments of the present application provide an information transmission method, apparatus, and device, so as to solve the problems of low data migration efficiency and high handover delay in the information transmission scheme aiming at mobility management in the prior art. The method, the device and the equipment are based on the same application conception, and because the principle of solving the problems by the method, the device and the equipment is similar, the implementation of the method, the device and the equipment can be mutually referred, and the repeated parts are not repeated.

The information transmission method provided in the embodiment of the present application is applied to a target session management functional entity, as shown in fig. 3, and includes:

step 31: receiving a session context creation request message sent by a target access and mobility management function entity;

step 32: creating a request message according to the session context to obtain a mobility management context of at least one session;

step 33: performing mobility management according to the mobility management context; wherein the mobility management context comprises: at least one of an access management context and a session management context.

The information transmission method provided by the embodiment of the application is characterized in that a session context creation request message sent by a target access and mobility management function entity is received; creating a request message according to the session context to obtain a mobility management context of at least one session; performing mobility management according to the mobility management context; wherein the mobility management context comprises: at least one of an access management context and a session management context; the method can support to realize that one-time mobility management for the cross-distributed network node can be carried out for at least one session, and avoid that each time of mobility management can only be carried out for one session, thereby improving data migration efficiency, reducing switching time delay, and well solving the problems of low data migration efficiency and high switching time delay existing in the information transmission scheme for mobility management in the prior art.

Wherein the creating the request message according to the session context to obtain the mobility management context of at least one session includes: acquiring the mobility management context of at least one session from the session context creation request message under the condition that the session context creation request message carries the mobility management context of the at least one session; transmitting a session context request message for at least one session to a target repository entity in case the session context creation request message does not carry a mobility management context of the session; and receiving a session context response message fed back by the target warehouse entity, wherein the session context response message carries the mobility management context of the at least one session.

This may try to ensure that mobility management context for at least one session is available.

In this embodiment, the target warehouse entity is deployed by at least one of the following manners: newly adding at least one network function as a warehouse entity on a control plane; expanding the defined network function as a warehouse entity; wherein one repository entity is for storing at least one of an access management context and a session management context.

Thus, the deployment of warehouse entities can be variously realized.

The embodiment of the application also provides an information transmission method applied to the target access and mobility management functional entity, as shown in fig. 4, including:

step 41: receiving a switching resource allocation request message for at least one session, which is sent by a source access and mobility management functional entity;

step 42: according to the switching resource allocation request message, a session context creation request message is sent to a target session management function entity corresponding to each session; wherein the session context creation request message carries at least one mobility management context of the session; or, the session context creation request message does not carry the mobility management context of the session; the mobility management context includes: at least one of an access management context and a session management context.

The handover resource allocation request message may carry at least one of terminal identification information, session identification information of at least one session, and node identification information of a network node corresponding to the at least one session, but is not limited thereto.

The information transmission method provided by the embodiment of the application is implemented by receiving a switching resource allocation request message for at least one session, which is sent by a source access and mobility management functional entity; according to the switching resource allocation request message, a session context creation request message is sent to a target session management function entity corresponding to each session; wherein the session context creation request message carries at least one mobility management context of the session; or, the session context creation request message does not carry the mobility management context of the session; the mobility management context includes: at least one of an access management context and a session management context; the method can support to realize that one-time mobility management for the cross-distributed network node can be carried out for at least one session, and avoid that each time of mobility management can only be carried out for one session, thereby improving data migration efficiency, reducing switching time delay, and well solving the problems of low data migration efficiency and high switching time delay existing in the information transmission scheme for mobility management in the prior art.

Under the condition that the session context creation request message carries at least one mobility management context of the session, before sending the session context creation request message to the target session management function entity corresponding to each session according to the handover resource allocation request message, the method further comprises: according to the first information carried by the switching resource allocation request message, a first context acquisition request message is sent to a target warehouse entity; receiving a first context acquisition response message fed back by the target warehouse entity; wherein the first information includes: at least one of terminal identification information, session identification information of at least one session, and node identification information of a network node corresponding to the at least one session; the first context acquisition request message carries at least one of the terminal identification information, session identification information of at least one session and node identification information of a network node corresponding to the at least one session; the first context acquisition response message carries the mobility management context of at least one session requested by the first context acquisition request message.

Thus, the transmission of the subsequent switching resource allocation request message can be ensured to be accurately realized. The session identification information of the at least one session can be embodied as a session identification list, and the scheme can obtain the information of a plurality of sessions at one time in a list mode; regarding the carried "node identification information of the network node corresponding to the at least one session", it is possible to cope with: if the network node is a different network node, the network node identification of the original network node may need to be carried, so as to avoid the problem that the session identifications in the different nodes may not be distinguished; for example, the session identity 1 of network node 1 and the session identity 1 of network node 2. Wherein, in case the handover resource allocation request message carries an access management context of the at least one session, the first context acquisition request message is not used for requesting the access management context of the at least one session.

In this embodiment of the present application, the handover resource allocation request message carries at least one mobility management context of the session.

This may enable implementation of a subsequent scheme that no longer acquires mobility management context.

Under the condition that the session context creation request message does not carry the mobility management context of the session, before sending the session context creation request message to the target session management function entity corresponding to each session according to the handover resource allocation request message, the method further comprises: according to the second information carried by the switching resource allocation request message, sending a context acquisition notice (message) to a target warehouse entity; wherein the second information includes: at least one of terminal identification information, session identification information of at least one session, and node identification information of a network node corresponding to the at least one session; the context acquisition notification carries at least one of the terminal identification information, session identification information of at least one session, and node identification information of a network node corresponding to the at least one session.

This may enable the target warehouse entity to accurately obtain relevant contexts, which may include: at least one of an access management context and a session management context.

Further, the second information further includes: an access management context corresponding to the at least one session; the context acquisition notification is used for notifying the target warehouse entity to acquire a session management context and/or is not used for notifying the target warehouse entity to acquire an access management context contained in the second information.

This may directly inform the target warehouse entity of the access management context without requiring the target warehouse entity to go to additional acquisitions.

Wherein the target warehouse entity is deployed by at least one of: newly adding at least one network function as a warehouse entity on a control plane; expanding the defined network function as a warehouse entity; wherein one repository entity is for storing at least one of an access management context and a session management context.

Thus, the deployment of warehouse entities can be variously realized.

The embodiment of the application also provides an information transmission method, which is applied to the target warehouse entity, as shown in fig. 5, and comprises the following steps:

Step 51: receiving third information sent by a target access and mobility management functional entity;

step 52: performing a context acquisition operation according to the third information; wherein the third information includes: a first context acquisition request message; the first context acquisition request message carries at least one of terminal identification information, session identification information of at least one session and node identification information of a network node corresponding to the at least one session; alternatively, the third information includes: the context acquires a notification; the context acquisition notification carries at least one of terminal identification information, session identification information of at least one session, and node identification information of a network node corresponding to the at least one session.

The information transmission method provided by the embodiment of the application is implemented by receiving third information sent by the target access and mobility management functional entity; performing a context acquisition operation according to the third information; wherein the third information includes: a first context acquisition request message; the first context acquisition request message carries at least one of terminal identification information, session identification information of at least one session and node identification information of a network node corresponding to the at least one session; alternatively, the third information includes: the context acquires a notification; the context acquisition notice carries at least one of terminal identification information, session identification information of at least one session and node identification information of a network node corresponding to the at least one session; the method can support to realize that one-time mobility management for the cross-distributed network node can be carried out for at least one session, and avoid that each time of mobility management can only be carried out for one session, thereby improving data migration efficiency, reducing switching time delay, and well solving the problems of low data migration efficiency and high switching time delay existing in the information transmission scheme for mobility management in the prior art.

Wherein, when the third information includes the first context acquisition request message, the performing, according to the third information, a context acquisition operation includes: sending a second context acquisition request message to a source warehouse entity according to the first context acquisition request message under the condition that the target warehouse entity does not store the mobility management context requested by the first context acquisition request message; receiving a second context acquisition response message fed back by the source warehouse entity; the second context obtaining request message carries at least one of the terminal identification information, session identification information of at least one session and node identification information of a network node corresponding to the at least one session; the second context acquisition response message carries the mobility management context of at least one session requested by the second context acquisition request message; the mobility management context includes: at least one of an access management context and a session management context.

Thus, the relevant context can be accurately obtained; wherein the mobility management context requested by the first context acquisition request message may include: the first context obtains a mobility management context corresponding to at least one item of terminal identification information and session identification information carried by the request message; and/or the mobility management context requested by the second context acquisition request message may include: the mobility management context corresponding to at least one of the terminal identification information and the session identification information carried by the second context obtaining request message is not limited to this.

Further, after performing the context acquisition operation according to the third information, the method further includes: sending a first context acquisition response message to the target access and mobility management functional entity according to the second context acquisition response message; the first context acquisition response message carries the mobility management context of at least one session requested by the first context acquisition request message.

This may allow the target access and mobility management function to accurately get the requested mobility management context.

Wherein the sending, according to the first context acquisition request message, a second context acquisition request message to a source repository entity includes: according to the information carried by the first context acquisition request message, determining the related information of the corresponding source warehouse entity; and sending a second context acquisition request message to the source warehouse entity according to the related information of the source warehouse entity.

So that the corresponding source warehouse entity (node) can be found based on some information in the request message, and further the needed mobility management context can be accurately acquired from the corresponding source warehouse entity; wherein, "the information carried by the first context acquisition request message" may include: network node identification, UE identification, session management function identification (which may also carry session management function identification information (corresponding to the source repository entity) corresponding to the first context acquisition request message), etc., but not limited thereto.

In this embodiment of the present application, when the third information includes a context acquisition notification, the performing, according to the third information, a context acquisition operation includes: according to the context acquisition notification, a third context acquisition request message is sent to a source warehouse entity; receiving a third context acquisition response message fed back by the source warehouse entity; the third context obtaining request message carries at least one of the terminal identification information, session identification information of at least one session and node identification information of a network node corresponding to the at least one session; the third context acquisition response message carries the mobility management context of at least one session requested by the third context acquisition request message; the mobility management context includes: at least one of an access management context and a session management context.

In this way, the relevant context (mobility management context) can be accurately acquired. Wherein the mobility management context requested by the third context acquisition request message may include: the mobility management context corresponding to at least one of the terminal identification information and the session identification information carried by the third context obtaining request message is not limited to this.

Wherein the first warehouse entity is deployed by at least one of: newly adding at least one network function as a warehouse entity on a control plane; expanding the defined network function as a warehouse entity; wherein one warehouse entity is configured to store at least one of an access management context and a session management context; the first warehouse entity includes a target warehouse entity and/or a source warehouse entity.

Thus, the deployment of warehouse entities can be variously realized.

The embodiment of the application also provides an information transmission method, which is applied to a source warehouse entity, as shown in fig. 6, and comprises the following steps:

step 61: receiving a context acquisition request message sent by a first entity;

step 62: sending a context acquisition response message to the first entity according to the context acquisition request message; wherein the first entity comprises: a target warehouse entity, the context acquisition request message comprising: a second context acquisition request message; the context acquisition response message includes: the second context acquires a response message; alternatively, the context acquisition request message includes: a third context acquisition request message; the context acquisition response message includes: the third context obtains a response message; alternatively, the first entity includes: the source access and mobility management function entity, the context acquisition request message includes: a fourth context acquisition request message; the context acquisition response message includes: a fourth context acquisition response message; the context acquisition request message carries at least one of terminal identification information, session identification information of at least one session and node identification information of a network node corresponding to the at least one session; the context acquisition response message carries the mobility management context of at least one session requested by the context acquisition request message; the mobility management context includes: at least one of an access management context and a session management context.

The information transmission method provided by the embodiment of the application is implemented by receiving a context acquisition request message sent by a first entity; sending a context acquisition response message to the first entity according to the context acquisition request message; wherein the first entity comprises: a target warehouse entity, the context acquisition request message comprising: a second context acquisition request message; the context acquisition response message includes: the second context acquires a response message; alternatively, the context acquisition request message includes: a third context acquisition request message; the context acquisition response message includes: the third context obtains a response message; alternatively, the first entity includes: the source access and mobility management function entity, the context acquisition request message includes: a fourth context acquisition request message; the context acquisition response message includes: a fourth context acquisition response message; the context acquisition request message carries at least one of terminal identification information, session identification information of at least one session and node identification information of a network node corresponding to the at least one session; the context acquisition response message carries the mobility management context of at least one session requested by the context acquisition request message; the mobility management context includes: at least one of an access management context and a session management context; the method can support to realize that one-time mobility management for the cross-distributed network node can be carried out for at least one session, and avoid that each time of mobility management can only be carried out for one session, thereby improving data migration efficiency, reducing switching time delay, and well solving the problems of low data migration efficiency and high switching time delay existing in the information transmission scheme for mobility management in the prior art.

Thus, the deployment of warehouse entities can be variously realized.

The embodiment of the application also provides an information transmission method applied to the source access and mobility management entity, as shown in fig. 7, including:

step 71: sending a fourth context acquisition request message to the source warehouse entity;

step 72: receiving a fourth context acquisition response message fed back by the source warehouse entity;

step 73: according to the fourth context obtaining response message, sending a switching resource allocation request message aiming at least one session to a target access and mobility management functional entity; the fourth context obtaining request message carries at least one of terminal identification information, session identification information of at least one session and node identification information of a network node corresponding to the at least one session; the fourth context acquisition response message carries the mobility management context of at least one session requested by the fourth context acquisition request message; the mobility management context includes: at least one of an access management context and a session management context; the handover resource allocation request message carries a mobility management context for at least one session.

Wherein the mobility management context requested by the fourth context acquisition request message may include: the mobility management context corresponding to at least one of the terminal identification information and the session identification information carried by the fourth context obtaining request message is not limited to this.

The information transmission method provided by the embodiment of the application is implemented by sending a fourth context acquisition request message to a source warehouse entity; receiving a fourth context acquisition response message fed back by the source warehouse entity; according to the fourth context obtaining response message, sending a switching resource allocation request message aiming at least one session to a target access and mobility management functional entity; the fourth context obtaining request message carries at least one of terminal identification information, session identification information of at least one session and node identification information of a network node corresponding to the at least one session; the fourth context acquisition response message carries the mobility management context of at least one session requested by the fourth context acquisition request message; the mobility management context includes: at least one of an access management context and a session management context; the switching resource allocation request message carries a mobility management context of at least one session; the method can support to realize that one-time mobility management for the cross-distributed network node can be carried out for at least one session, and avoid that each time of mobility management can only be carried out for one session, thereby improving data migration efficiency, reducing switching time delay, and well solving the problems of low data migration efficiency and high switching time delay existing in the information transmission scheme for mobility management in the prior art.

Wherein the source warehouse entity is deployed by at least one of: newly adding at least one network function as a warehouse entity on a control plane; expanding the defined network function as a warehouse entity; wherein one repository entity is for storing at least one of an access management context and a session management context.

Thus, the deployment of warehouse entities can be variously realized.

The information transmission method provided in the embodiment of the present application is illustrated below.

Aiming at the technical problems, the embodiment of the application provides an information transmission method, which can be specifically realized as a data warehouse-based cross-distributed node unit domain mobility management method; the method comprises the following steps: user contexts (corresponding to the mobility management contexts) are uniformly stored in a data warehouse (corresponding to the target warehouse entity and the source warehouse entity), and related context data are not required to be acquired from different network functions respectively at session granularity in the mobile handover process, but context data of a plurality of sessions can be acquired at one time. Regarding the setting of the warehouse entity, the following schemes may be specifically included:

scheme 1: the control plane (of a distributed network node) newly deploys a network function, such as a context data repository, for access and mobility management functions and session management functions to store and retrieve data, which may include access management contexts and/or session management contexts, etc.

Scheme 2: the control plane newly deploys two network functions for the access and mobility management functions and session management functions, respectively, to store and retrieve data, which may include access management context and/or session management context.

Scheme 3: the existing network functions, such as the unified data warehouse UDR, are extended, adding storage functionality for context data.

Scheme 4: of the above 3 schemes, only the session management context may be stored and acquired, which is not limited herein.

The schemes 1 and 2 correspond to the above-mentioned adding at least one network function as a warehouse entity on the control plane; the above scheme 3 corresponds to the above network function defined by the extension as a repository entity.

This scheme is specifically exemplified below in conjunction with scheme 1 described above.

Example 1

As shown in fig. 8, the cross-domain mobility management procedure may include the following steps:

step 0, the terminal informs the S-wireless equipment to decide to switch;

step 1, S-wireless equipment sends a switching requirement to S-access and mobility management (function);

step 2, S-access and mobility management (function) are carried out to select distributed (network) nodes and T-access and mobility management functions; the symbol "&" represents; step 2 may specifically include: completing the selection of the target distributed network node to obtain the target distributed network node; and performing target access and mobility management function selection in the obtained target distributed network node.

Step 3, S (source) -access and mobility management function requests to distribute switching resources to the selected T (target) -access and mobility management function, wherein the request message carries UE identification (corresponding to the terminal identification information) and session identification list (corresponding to the session identification information of the at least one session); receiving a handover resource allocation request message for at least one session, which is sent by a source access and mobility management function entity, corresponding to the target access and mobility management function entity;

wherein, the UE identifier and the session identifier list may include network identifier information (node identifier information corresponding to the network node corresponding to the at least one session) for allocating the identifier, for distinguishing the identifier information allocated by different network nodes; the information may also be carried independently of the UE identity and the session identity list;

the context data warehouse may store the access management context, (1) if the context data warehouse has the access management context, step 3 may or may not carry the access management context;

(2) If the context data warehouse does not store the access management context, the step 3 carries the access management context;

There is no limitation in this scenario as to how it is determined whether the contextual data store stores management context.

Step 4, the T-access and mobility management function requests the T-context data warehouse (corresponding to the target warehouse entity) to acquire the needed context; and sending a first context acquisition request message to the target warehouse entity according to the first information carried by the switching resource allocation request message.

Wherein if step 3 already carries an access management context, the information may not be requested from the T-context data repository, otherwise it is also requested.

Step 5, if the T-context data warehouse does not store the needed context, the T-context data warehouse can request the corresponding S-context data warehouse (corresponding to the source warehouse entity) to acquire the relevant context according to the node identification information contained in the request message, wherein the request message carries the UE identification and the session identification list; third information sent corresponding to the receiving target access and mobility management function entity; performing a context acquisition operation according to the third information; wherein the third information includes: and a first context acquisition request message, wherein the performing a context acquisition operation according to the third information includes: sending a second context acquisition request message to a source warehouse entity according to the first context acquisition request message under the condition that the target warehouse entity does not store the mobility management context requested by the first context acquisition request message; and receiving a second context acquisition response message fed back by the source warehouse entity. The sending a second context acquisition request message to a source warehouse entity according to the first context acquisition request message includes: according to the information carried by the first context acquisition request message, determining the related information of the corresponding source warehouse entity; and sending a second context acquisition request message to the (corresponding) source warehouse entity according to the related information of the source warehouse entity.

The node identification information included in the request message may be node identification information (corresponding to the node identification information of the network node where the S-context data repository is located) included in the "UE identification" or "session identification list", or may be node identification information obtained by querying other network functions based on the information ("UE identification" or "session identification list"), which is not limited herein.

Step 6, the S-context data warehouse returns the relevant context to the T-context data warehouse, and can respond to the access management context and all the requested session contexts; corresponding to the receiving of the context acquisition request message sent by the first entity; sending a context acquisition response message to the first entity according to the context acquisition request message; wherein the first entity comprises: a target warehouse entity, the context acquisition request message comprising: a second context acquisition request message; the context acquisition response message includes: the second context obtains a response message.

Step 7, the T-context data warehouse responds to the context to the T-access and mobility management function; and sending a first context acquisition response message to the target access and mobility management function entity according to the second context acquisition response message.

Step 8, the T-access and mobility management functions make a target session management function selection (for each session); in particular, the T-access and mobility management functions may select a corresponding T-session management function at the granularity of each session;

step 9, the T-access and mobility management function sends a request (message) for creating the session context to the selected T-session management function, wherein the request carries the relevant session context (namely the session context of the corresponding session); corresponding to the request message for switching resource allocation, sending a session context creation request message to a target session management function entity corresponding to each session; the session context creation request message carries at least one mobility management context for the session.

Step 9, a plurality of messages sent to different sessions of the same session management function can be changed into one message to be sent, wherein the message carries a plurality of session identifications and session contexts; but is not limited thereto.

The related operations of the T-session management function related to the following steps 10-19 correspond to the above-mentioned target session management function entity performing mobility management according to the mobility management context.

Step 10, the T-session management function selects a user plane, namely selecting a T-user plane function aiming at the session;

step 11, establishing a user plane between the T-session management function and the selected T-user plane function;

step 11a, optionally, establishing an inter-domain forwarding path between the T-user plane function and the S-user plane function;

step 12, the T-session management function feeds back a session context creation response (message) to the T-access and mobility management (function);

step 13, T-access and mobility management (function) carry out response supervision;

step 14, T-access and mobility management sends a handover request (message) to the T-wireless device;

step 15, the T-wireless device feeds back a switching request confirmation message (successful or failed session) to the T-access and mobility management;

step 16, the T-access and mobility management requests the T-session management function to update the session context;

step 17, the T-session management function requests or notifies the S-session management function to update the session context;

step 17a, optionally, establishing an indirect forwarding path between the T-session management function and the T-user plane function; and/or, establishing an indirect forwarding path between the S-session management function and the S-user plane function;

step 18, the T-session management function feeds back (updates context) responses (messages) to the T-access and mobility management;

Step 19, T-access and mobility management feeds back a response (message) to S-access and mobility management (of handover resource allocation).

Example 2

Steps 3-9 in example 1 may be adjusted to steps 3-7 described below, and the following steps of step 7 are the same as steps 10-19 (not shown in fig. 9) of example 1, and will not be described again. The main differences between this example and example 1 include: the S-access and mobility management function first interacts with the S-context data repository before interacting with the T-access and mobility management function to obtain a relevant context, and then carries relevant information in the interaction with the T-access and mobility management function.

Specifically, as shown in fig. 9, the solution of this example includes the following steps:

step 0, the terminal informs the S-wireless equipment to decide to switch;

step 2, S-access and mobility management (function) are carried out to select distributed (network) nodes and T-access and mobility management functions; step 2 may specifically include: completing the selection of the target distributed network node to obtain the target distributed network node; and performing target access and mobility management function selection in the obtained target distributed network node.

Step 3, the S-access and mobility management function requests the S-context data warehouse to acquire the context, and the message carries a session identification list; receiving a context acquisition request message sent by a first entity corresponding to the source warehouse entity; wherein the first entity comprises: the source access and mobility management function entity, the context acquisition request message includes: and fourth context acquisition request message.

Step 4, responding to the S-context data warehouse, specifically responding to the S-access and mobility management function with the access management context and all requested session contexts; the source warehouse entity sends a context acquisition response message to the first entity according to the context acquisition request message; wherein the first entity comprises: the source access and mobility management functional entity, the context acquisition response message includes: the fourth context obtains the response message.

Step 5, the S-access and mobility management function requests to allocate switching resources to the selected T-access and mobility management function, and the message carries an access management context, a session management context and the like, specifically can carry all contexts; and sending a handover resource allocation request message for at least one session to the target access and mobility management function entity corresponding to the fourth context acquisition response message. The handover resource allocation request message may carry a mobility management context for at least one of the sessions.

Step 6, the T-access and mobility management function performs target session management function selection (for each session); in particular, the T-access and mobility management functions may select a corresponding T-session management function at the granularity of each session;

step 7, the T-access and mobility management function sends a request (message) to the selected T-session management function to create a session context, the request carrying the relevant session context (i.e. the session context of the corresponding session). Corresponding to the request message for switching resource allocation, sending a session context creation request message to a target session management function entity corresponding to each session; the session context creation request message carries at least one mobility management context for the session.

Example 3

Steps 3-10 in example 1 may be adjusted to steps 3-11 described below, and the subsequent operations of step 11 described below are the same as steps 11-19 (not shown in fig. 10) in example 1, and will not be described again. The main differences between this example and example 1 include: the T-access and mobility management function sends a request (message) to the T-session management function to create a session context, the request no longer carrying the relevant session context (i.e. the session context of the corresponding session), but is requested to be acquired by the T-session management function from the T-context data repository.

Specifically, as shown in fig. 10, the solution of this example includes the following steps:

step 0, the terminal informs the S-wireless equipment to decide to switch;

Step 3, the S-access and mobility management function requests to allocate switching resources to the selected T-access and mobility management function, and the request message carries an access management context and a session identification list; and receiving a switching resource allocation request message for at least one session, which is sent by a source access and mobility management function entity, corresponding to the target warehouse entity.

Step 4, the T-access and mobility management function informs the T-context data warehouse to acquire the relevant session context (session management context), and the notification carries a session identification list; and sending a context acquisition notice (message) to the target warehouse entity according to the second information carried by the switching resource allocation request message.

Step 5, 6: the T-context data warehouse acquires a session context from the S-context data warehouse; specifically, the T-context data warehouse requests an acquisition context (carrying a UE identifier & session identifier list) from the S-context data warehouse, and the S-context data warehouse responds to the access management context and all requested session contexts from the T-context data warehouse; receiving third information sent by a target access and mobility management function entity corresponding to the target warehouse entity; performing a context acquisition operation according to the third information; wherein the third information includes: the context acquires a notification; and performing a context acquisition operation according to the third information, including: according to the context acquisition notification, a third context acquisition request message is sent to a source warehouse entity; and receiving a third context acquisition response message fed back by the source warehouse entity. The source warehouse entity receives a context acquisition request message sent by a first entity; sending a context acquisition response message to the first entity according to the context acquisition request message; wherein the first entity comprises: a target warehouse entity, the context acquisition request message comprising: a third context acquisition request message; the context acquisition response message includes: the third context obtains a response message.

Step 7, 8: the T-access and mobility management function selects the T-session management function and sends a create session context request (message); specifically, the T-access and mobility management functions make a target session management function selection (for each session); wherein the T-access and mobility management functions may select a respective T-session management function at the granularity of each session; the T-access and mobility management function sends a request (message) to the selected T-session management function to create a session context, the request not carrying the relevant session context (i.e. the session context of the corresponding session). Corresponding to the request message for switching resource allocation, sending a session context creation request message to a target session management function entity corresponding to each session; the session context creation request message does not carry the mobility management context of the session.

Step 9, 10: the T-session management function obtains a session context from a T-context data repository; specifically, the T-session management function requests a session context from the T-context data store, and the T-context data store responds to the session context from the T-session management function. Corresponding to the situation that the session context creation request message does not carry the mobility management context of the session, sending a session context request message for at least one session to a target warehouse entity; and receiving a session context response message fed back by the target warehouse entity, wherein the session context response message carries the mobility management context of the at least one session.

Step 11, the T-session management function performs user plane selection, namely selects the T-user plane function for the session.

In this description, the relevant contents between the above examples can be referred to each other, and the repetition is not repeated.

By the above, the scheme relates to a cross-domain mobility management method based on a data warehouse, which can realize unified storage of user contexts in the data warehouse, and can acquire context data of a plurality of sessions from the context data warehouse in the mobile switching process. Wherein:

1. regarding the deployment of the data repository, a network function may be newly deployed at the control plane for access and mobility management functions and session management functions to store and retrieve data, which may include access management context and/or session management context, etc.; or two network functions are newly deployed on the control plane and are respectively used for the access and mobility management functions and the session management functions to store and acquire data, wherein the data can comprise an access management context and/or a session management context; it may also be to extend existing network functions, such as unified data warehouse UDR, to add storage functions for context data; of these three ways, only the session management context may be stored and acquired, which is not limited herein.

2. When the S-access and mobility management function requests to allocate the switching resources to the T-access and mobility management function, the access management context can be carried in a message, or only the UE identifier can be carried, and the T-access and mobility management function can be acquired from a T-context data warehouse.

3. The session context may be carried after the S-access and mobility management function is acquired from the S-context data repository, or the T-access and mobility management function may be acquired from the T-context data repository, or the T-session management function may be acquired from the T-context data repository, which is not limited herein.

In summary, the scheme can be implemented as a data warehouse-based cross-domain (i.e. cross-network node) mobility management method, which can improve data migration efficiency, save signaling messages, reduce handover delay, and is particularly well applicable to mobility management problems in a UE fast moving scenario.

The embodiment of the application further provides an information transmission device, where the information transmission device is a target session management functional entity, as shown in fig. 11, including a memory 111, a transceiver 112, and a processor 113:

a memory 111 for storing a computer program; a transceiver 112 for transceiving data under the control of the processor 113; a processor 113 for reading the computer program in the memory 111 and performing the following operations:

Receiving, by the transceiver 112, a session context creation request message sent by a target access and mobility management function entity;

performing mobility management according to the mobility management context;

The information transmission device provided by the embodiment of the application creates a request message by receiving a session context sent by a target access and mobility management function entity; creating a request message according to the session context to obtain a mobility management context of at least one session; performing mobility management according to the mobility management context; wherein the mobility management context comprises: at least one of an access management context and a session management context; the method can support to realize that one-time mobility management for the cross-distributed network node can be carried out for at least one session, and avoid that each time of mobility management can only be carried out for one session, thereby improving data migration efficiency, reducing switching time delay, and well solving the problems of low data migration efficiency and high switching time delay existing in the information transmission scheme for mobility management in the prior art.

Specifically, the transceiver 112 is configured to receive and transmit data under the control of the processor 113.

Wherein in fig. 11, a bus architecture may comprise any number of interconnected buses and bridges, and in particular one or more processors represented by processor 113 and various circuits of memory represented by memory 111, linked together. The bus architecture may also link together various other circuits such as peripheral devices, voltage regulators, power management circuits, etc., which are well known in the art and, therefore, will not be described further herein. The bus interface provides an interface. Transceiver 112 may be a number of elements, including a transmitter and a receiver, providing a means for communicating with various other apparatus over a transmission medium, including wireless channels, wired channels, optical cables, etc. The processor 113 is responsible for managing the bus architecture and general processing, and the memory 111 may store data used by the processor 113 in performing operations.

The processor 113 may be a Central Processing Unit (CPU), an application specific integrated circuit (Application Specific Integrated Circuit, ASIC), a Field programmable gate array (Field-Programmable Gate Array, FPGA) or a complex programmable logic device (Complex Programmable Logic Device, CPLD), or it may employ a multi-core architecture.

Wherein the creating the request message according to the session context to obtain the mobility management context of at least one session includes: acquiring the mobility management context of at least one session from the session context creation request message under the condition that the session context creation request message carries the mobility management context of the at least one session; transmitting, by the transceiver, a session context request message for at least one session to a target repository entity, in case the session context creation request message does not carry a mobility management context for the session; and receiving a session context response message fed back by the target warehouse entity through the transceiver, wherein the session context response message carries the mobility management context of the at least one session.

It should be noted that, the above device provided in this embodiment of the present application can implement all the method steps implemented by the method embodiment on the target session management function entity side, and can achieve the same technical effects, and detailed descriptions of the same parts and beneficial effects as those of the method embodiment in this embodiment are omitted.

The embodiment of the present application further provides an information transmission device, where the information transmission device is a target access and mobility management functional entity, as shown in fig. 12, including a memory 121, a transceiver 122, and a processor 123:

a memory 121 for storing a computer program; a transceiver 122 for transceiving data under the control of the processor 123; a processor 123 for reading the computer program in the memory 121 and performing the following operations:

receiving, by the transceiver 122, a handover resource allocation request message for at least one session sent by a source access and mobility management function entity;

transmitting, by the transceiver 122, a session context creation request message to a target session management function entity corresponding to each session according to the handover resource allocation request message;

The information transmission device provided by the embodiment of the application receives a switching resource allocation request message for at least one session, which is sent by a source access and mobility management function entity; according to the switching resource allocation request message, a session context creation request message is sent to a target session management function entity corresponding to each session; wherein the session context creation request message carries at least one mobility management context of the session; or, the session context creation request message does not carry the mobility management context of the session; the mobility management context includes: at least one of an access management context and a session management context; the method can support to realize that one-time mobility management for the cross-distributed network node can be carried out for at least one session, and avoid that each time of mobility management can only be carried out for one session, thereby improving data migration efficiency, reducing switching time delay, and well solving the problems of low data migration efficiency and high switching time delay existing in the information transmission scheme for mobility management in the prior art.

Specifically, the transceiver 122 is configured to receive and transmit data under the control of the processor 123.

Wherein in fig. 12, a bus architecture may comprise any number of interconnected buses and bridges, and in particular one or more processors represented by processor 123 and various circuits of memory represented by memory 121, linked together. The bus architecture may also link together various other circuits such as peripheral devices, voltage regulators, power management circuits, etc., which are well known in the art and, therefore, will not be described further herein. The bus interface provides an interface. The transceiver 122 may be a number of elements, including a transmitter and a receiver, providing a means for communicating with various other apparatus over transmission media, including wireless channels, wired channels, optical cables, and the like. The processor 123 is responsible for managing the bus architecture and general processing, and the memory 121 may store data used by the processor 123 in performing operations.

The processor 123 may be a Central Processing Unit (CPU), an application specific integrated circuit (Application Specific Integrated Circuit, ASIC), a Field programmable gate array (Field-Programmable Gate Array, FPGA) or a complex programmable logic device (Complex Programmable Logic Device, CPLD), or it may employ a multi-core architecture.

Further, the operations further comprise: under the condition that the session context creation request message carries at least one mobility management context of the session, before sending the session context creation request message to a target session management function entity corresponding to each session according to the handover resource allocation request message, sending a first context acquisition request message to a target warehouse entity according to first information carried by the handover resource allocation request message through the transceiver; receiving, by the transceiver, a first context acquisition response message fed back by the target warehouse entity; wherein the first information includes: at least one of terminal identification information, session identification information of at least one session, and node identification information of a network node corresponding to the at least one session; the first context acquisition request message carries at least one of the terminal identification information, session identification information of at least one session and node identification information of a network node corresponding to the at least one session; the first context acquisition response message carries the mobility management context of at least one session requested by the first context acquisition request message.

Wherein the handover resource allocation request message carries at least one mobility management context of the session.

Further, the operations further comprise: under the condition that the session context creation request message does not carry the mobility management context of the session, before the session context creation request message is sent to the target session management function entity corresponding to each session according to the handover resource allocation request message, sending a context acquisition notification to the target warehouse entity according to second information carried by the handover resource allocation request message through the transceiver; wherein the second information includes: at least one of terminal identification information, session identification information of at least one session, and node identification information of a network node corresponding to the at least one session; the context acquisition notification carries at least one of the terminal identification information, session identification information of at least one session, and node identification information of a network node corresponding to the at least one session.

In this embodiment of the present application, the second information further includes: an access management context corresponding to the at least one session; the context acquisition notification is used for notifying the target warehouse entity to acquire a session management context and/or is not used for notifying the target warehouse entity to acquire an access management context contained in the second information.

It should be noted that, the above device provided in this embodiment of the present application can implement all the method steps implemented by the method embodiment of the target access and mobility management function entity side, and can achieve the same technical effects, and detailed descriptions of the same parts and beneficial effects as those of the method embodiment in this embodiment are omitted.

The embodiment of the application further provides an information transmission device, where the information transmission device is a target warehouse entity, as shown in fig. 13, including a memory 131, a transceiver 132, and a processor 133:

a memory 131 for storing a computer program; a transceiver 132 for transceiving data under the control of the processor 133; a processor 133 for reading the computer program in the memory 131 and performing the following operations:

receiving, by the transceiver 132, third information transmitted by the target access and mobility management function entity;

Performing a context acquisition operation according to the third information;

The information transmission device provided by the embodiment of the application receives the third information sent by the target access and mobility management function entity; performing a context acquisition operation according to the third information; wherein the third information includes: a first context acquisition request message; the first context acquisition request message carries at least one of terminal identification information, session identification information of at least one session and node identification information of a network node corresponding to the at least one session; alternatively, the third information includes: the context acquires a notification; the context acquisition notice carries at least one of terminal identification information, session identification information of at least one session and node identification information of a network node corresponding to the at least one session; the method can support to realize that one-time mobility management for the cross-distributed network node can be carried out for at least one session, and avoid that each time of mobility management can only be carried out for one session, thereby improving data migration efficiency, reducing switching time delay, and well solving the problems of low data migration efficiency and high switching time delay existing in the information transmission scheme for mobility management in the prior art.

Specifically, the transceiver 132 is configured to receive and transmit data under the control of the processor 133.

Wherein in fig. 13, a bus architecture may comprise any number of interconnected buses and bridges, and in particular one or more processors represented by processor 133 and various circuits of memory represented by memory 131, linked together. The bus architecture may also link together various other circuits such as peripheral devices, voltage regulators, power management circuits, etc., which are well known in the art and, therefore, will not be described further herein. The bus interface provides an interface. The transceiver 132 may be a plurality of elements, i.e., including a transmitter and a receiver, providing a means for communicating with various other apparatus over transmission media, including wireless channels, wired channels, optical cables, and the like. The processor 133 is responsible for managing the bus architecture and general processing, and the memory 131 may store data used by the processor 133 in performing operations.

The processor 133 may be a Central Processing Unit (CPU), an application specific integrated circuit (Application Specific Integrated Circuit, ASIC), a Field programmable gate array (Field-Programmable Gate Array, FPGA) or a complex programmable logic device (Complex Programmable Logic Device, CPLD), or it may employ a multi-core architecture.

Wherein, when the third information includes the first context acquisition request message, the performing, according to the third information, a context acquisition operation includes: in the case that the target warehouse entity does not store the mobility management context requested by the first context acquisition request message, sending, by the transceiver, a second context acquisition request message to a source warehouse entity according to the first context acquisition request message; receiving, by the transceiver, a second context acquisition response message fed back by the source warehouse entity; the second context obtaining request message carries at least one of the terminal identification information, session identification information of at least one session and node identification information of a network node corresponding to the at least one session; the second context acquisition response message carries the mobility management context of at least one session requested by the second context acquisition request message; the mobility management context includes: at least one of an access management context and a session management context.

Further, the operations further comprise: after performing a context acquisition operation according to the third information, sending, by the transceiver, a first context acquisition response message to the target access and mobility management function entity according to the second context acquisition response message; the first context acquisition response message carries the mobility management context of at least one session requested by the first context acquisition request message.

In this embodiment of the present application, when the third information includes a context acquisition notification, the performing, according to the third information, a context acquisition operation includes: sending, by the transceiver, a third context acquisition request message to a source warehouse entity according to the context acquisition notification; receiving, by the transceiver, a third context acquisition response message fed back by the source warehouse entity; the third context obtaining request message carries at least one of the terminal identification information, session identification information of at least one session and node identification information of a network node corresponding to the at least one session; the third context acquisition response message carries the mobility management context of at least one session requested by the third context acquisition request message; the mobility management context includes: at least one of an access management context and a session management context.

It should be noted that, the above device provided in this embodiment of the present application can implement all the method steps implemented by the method embodiment on the target warehouse entity side, and can achieve the same technical effects, and detailed descriptions of the same parts and beneficial effects as those of the method embodiment in this embodiment are omitted.

The embodiment of the application further provides an information transmission device, where the information transmission device is a source warehouse entity, as shown in fig. 14, and includes a memory 141, a transceiver 142, and a processor 143:

a memory 141 for storing a computer program; a transceiver 142 for transceiving data under the control of the processor 143; a processor 143 for reading the computer program in the memory 141 and performing the following operations:

Receiving, by the transceiver 142, a context acquisition request message sent by the first entity;

transmitting, by the transceiver 142, a context acquisition response message to the first entity according to the context acquisition request message;

The information transmission device provided by the embodiment of the application receives a context acquisition request message sent by a first entity; sending a context acquisition response message to the first entity according to the context acquisition request message; wherein the first entity comprises: a target warehouse entity, the context acquisition request message comprising: a second context acquisition request message; the context acquisition response message includes: the second context acquires a response message; alternatively, the context acquisition request message includes: a third context acquisition request message; the context acquisition response message includes: the third context obtains a response message; alternatively, the first entity includes: the source access and mobility management function entity, the context acquisition request message includes: a fourth context acquisition request message; the context acquisition response message includes: a fourth context acquisition response message; the context acquisition request message carries at least one of terminal identification information, session identification information of at least one session and node identification information of a network node corresponding to the at least one session; the context acquisition response message carries the mobility management context of at least one session requested by the context acquisition request message; the mobility management context includes: at least one of an access management context and a session management context; the method can support to realize that one-time mobility management for the cross-distributed network node can be carried out for at least one session, and avoid that each time of mobility management can only be carried out for one session, thereby improving data migration efficiency, reducing switching time delay, and well solving the problems of low data migration efficiency and high switching time delay existing in the information transmission scheme for mobility management in the prior art.

Specifically, the transceiver 142 is configured to receive and transmit data under the control of the processor 143.

Where in FIG. 14, the bus architecture may comprise any number of interconnected buses and bridges, with the various circuits of the one or more processors, represented in particular by processor 143, and the memory, represented by memory 141, being linked together. The bus architecture may also link together various other circuits such as peripheral devices, voltage regulators, power management circuits, etc., which are well known in the art and, therefore, will not be described further herein. The bus interface provides an interface. The transceiver 142 may be a number of elements, including a transmitter and a receiver, providing a means for communicating with various other apparatus over transmission media, including wireless channels, wired channels, optical cables, and the like. The processor 143 is responsible for managing the bus architecture and general processing, and the memory 141 may store data used by the processor 143 in performing operations.

The processor 143 may be a Central Processing Unit (CPU), an application specific integrated circuit (Application Specific Integrated Circuit, ASIC), a Field programmable gate array (Field-Programmable Gate Array, FPGA), or a complex programmable logic device (Complex Programmable Logic Device, CPLD), or the processor may employ a multi-core architecture.

It should be noted that, the above device provided in this embodiment of the present application can implement all the method steps implemented by the method embodiment on the source warehouse entity side, and can achieve the same technical effects, and detailed descriptions of the same parts and beneficial effects as those of the method embodiment in this embodiment are omitted.

The embodiment of the present application further provides an information transmission device, where the information transmission device is a source access and mobility management entity, as shown in fig. 15, including a memory 151, a transceiver 152, and a processor 153:

a memory 151 for storing a computer program; a transceiver 152 for transceiving data under the control of the processor 153; a processor 153 for reading the computer program in the memory 151 and performing the following operations:

Transmitting, by the transceiver 152, a fourth context acquisition request message to the source repository entity;

receiving, by the transceiver 152, a fourth context acquisition response message fed back by the source warehouse entity;

transmitting, by the transceiver 152, a handover resource allocation request message for at least one session to a target access and mobility management function entity according to the fourth context acquisition response message;

The information transmission device provided by the embodiment of the application sends a fourth context acquisition request message to the source warehouse entity; receiving a fourth context acquisition response message fed back by the source warehouse entity; according to the fourth context obtaining response message, sending a switching resource allocation request message aiming at least one session to a target access and mobility management functional entity; the fourth context obtaining request message carries at least one of terminal identification information, session identification information of at least one session and node identification information of a network node corresponding to the at least one session; the fourth context acquisition response message carries the mobility management context of at least one session requested by the fourth context acquisition request message; the mobility management context includes: at least one of an access management context and a session management context; the switching resource allocation request message carries a mobility management context of at least one session; the method can support to realize that one-time mobility management for the cross-distributed network node can be carried out for at least one session, and avoid that each time of mobility management can only be carried out for one session, thereby improving data migration efficiency, reducing switching time delay, and well solving the problems of low data migration efficiency and high switching time delay existing in the information transmission scheme for mobility management in the prior art.

Specifically, the transceiver 152 is configured to receive and transmit data under the control of the processor 153.

Wherein in fig. 15, a bus architecture may comprise any number of interconnected buses and bridges, and in particular one or more processors represented by processor 153 and various circuits of memory represented by memory 151, linked together. The bus architecture may also link together various other circuits such as peripheral devices, voltage regulators, power management circuits, etc., which are well known in the art and, therefore, will not be described further herein. The bus interface provides an interface. The transceiver 152 may be a number of elements, including a transmitter and a receiver, providing a means for communicating with various other apparatus over transmission media, including wireless channels, wired channels, optical cables, etc. The processor 153 is responsible for managing the bus architecture and general processing, and the memory 151 may store data used by the processor 153 in performing operations.

The processor 153 may be a Central Processing Unit (CPU), an application specific integrated circuit (Application Specific Integrated Circuit, ASIC), a Field programmable gate array (Field-Programmable Gate Array, FPGA), or a complex programmable logic device (Complex Programmable Logic Device, CPLD), or may employ a multi-core architecture.

It should be noted that, the above device provided in this embodiment of the present application can implement all the method steps implemented by the method embodiments of the source access and mobility management entity side, and can achieve the same technical effects, and detailed descriptions of the same parts and beneficial effects as those of the method embodiments in this embodiment are omitted.

The embodiment of the application also provides an information transmission device, which is applied to the target session management functional entity, as shown in fig. 16, and includes:

a first receiving unit 161, configured to receive a session context creation request message sent by a target access and mobility management function entity;

a first processing unit 162, configured to obtain a mobility management context of at least one session according to the session context creation request message;

a second processing unit 163 for performing mobility management according to the mobility management context;

The embodiment of the application also provides an information transmission device, which is applied to the target access and mobility management functional entity, as shown in fig. 17, and includes:

a second receiving unit 171 for receiving a handover resource allocation request message for at least one session sent by the source access and mobility management function entity;

a first sending unit 172, configured to send a session context creation request message to a target session management function entity corresponding to each session according to the handover resource allocation request message;

The information transmission device provided by the embodiment of the application receives a switching resource allocation request message for at least one session, which is sent by a source access and mobility management functional entity; according to the switching resource allocation request message, a session context creation request message is sent to a target session management function entity corresponding to each session; wherein the session context creation request message carries at least one mobility management context of the session; or, the session context creation request message does not carry the mobility management context of the session; the mobility management context includes: at least one of an access management context and a session management context; the method can support to realize that one-time mobility management for the cross-distributed network node can be carried out for at least one session, and avoid that each time of mobility management can only be carried out for one session, thereby improving data migration efficiency, reducing switching time delay, and well solving the problems of low data migration efficiency and high switching time delay existing in the information transmission scheme for mobility management in the prior art.

Further, the information transmission device further includes: a second sending unit, configured to send, when the session context creation request message carries at least one mobility management context of the session, a first context acquisition request message to a target repository entity according to first information carried by the handover resource allocation request message before sending the session context creation request message to a target session management function entity corresponding to each session according to the handover resource allocation request message; a third receiving unit, configured to receive a first context acquisition response message fed back by the target warehouse entity; wherein the first information includes: at least one of terminal identification information, session identification information of at least one session, and node identification information of a network node corresponding to the at least one session; the first context acquisition request message carries at least one of the terminal identification information, session identification information of at least one session and node identification information of a network node corresponding to the at least one session; the first context acquisition response message carries the mobility management context of at least one session requested by the first context acquisition request message.

Further, the information transmission device further includes: a third sending unit, configured to send, when the session context creation request message does not carry a mobility management context of a session, a context acquisition notification to a target repository entity according to second information carried by the handover resource allocation request message before sending the session context creation request message to a target session management function entity corresponding to each session according to the handover resource allocation request message; wherein the second information includes: at least one of terminal identification information, session identification information of at least one session, and node identification information of a network node corresponding to the at least one session; the context acquisition notification carries at least one of the terminal identification information, session identification information of at least one session, and node identification information of a network node corresponding to the at least one session.

The embodiment of the application also provides an information transmission device, which is applied to a target warehouse entity, as shown in fig. 18, and comprises:

a fourth receiving unit 181, configured to receive third information sent by the target access and mobility management function entity;

a third processing unit 182, configured to perform a context acquiring operation according to the third information;

Further, the information transmission device further includes: a fourth sending unit, configured to send a first context acquisition response message to the target access and mobility management function entity according to the second context acquisition response message after performing a context acquisition operation according to the third information; the first context acquisition response message carries the mobility management context of at least one session requested by the first context acquisition request message.

The embodiment of the application also provides an information transmission device, which is applied to a source warehouse entity, as shown in fig. 19, and comprises:

a fifth receiving unit 191, configured to receive a context acquisition request message sent by the first entity;

a fifth sending unit 192, configured to send a context acquisition response message to the first entity according to the context acquisition request message;

The embodiment of the application also provides an information transmission device, which is applied to a source access and mobility management entity, as shown in fig. 20, and includes:

a sixth sending unit 201, configured to send a fourth context acquisition request message to the source repository entity;

a sixth receiving unit 202, configured to receive a fourth context acquisition response message fed back by the source repository entity;

a seventh sending unit 203, configured to send a handover resource allocation request message for at least one session to a target access and mobility management function entity according to the fourth context acquisition response message;

It should be noted that, in the embodiment of the present application, the division of the units is schematic, which is merely a logic function division, and other division manners may be implemented in actual practice. In addition, each functional unit in each embodiment of the present application may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in one unit. The integrated units may be implemented in hardware or in software functional units.

The integrated units, if implemented in the form of software functional units and sold or used as stand-alone products, may be stored in a processor-readable storage medium. Based on such understanding, the technical solution of the present application may be embodied in essence or a part contributing to the prior art or all or part of the technical solution, in the form of a software product stored in a storage medium, including several instructions to cause a computer device (which may be a personal computer, a server, or a network device, etc.) or a processor (processor) to perform all or part of the steps of the methods described in the embodiments of the present application. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a random access Memory (Random Access Memory, RAM), a magnetic disk, or an optical disk, or other various media capable of storing program codes.

The embodiment of the application also provides a processor readable storage medium, which stores a computer program, wherein the computer program is used for enabling the processor to execute the method of the target session management function entity side, the target access and mobility management function entity side, the target warehouse entity side, the source warehouse entity side or the source access and mobility management entity side.

The processor-readable storage medium may be any available medium or data storage device that can be accessed by a processor, including, but not limited to, magnetic storage (e.g., floppy disks, hard disks, magnetic tape, magneto-optical disks (MOs), etc.), optical storage (e.g., CD, DVD, BD, HVD, etc.), semiconductor storage (e.g., ROM, EPROM, EEPROM, nonvolatile storage (NAND FLASH), solid State Disk (SSD)), and the like.

The implementation embodiments of the methods of the target session management function entity side, the target access and mobility management function entity side, the target warehouse entity side, the source warehouse entity side or the source access and mobility management entity side are all applicable to the embodiment of the processor readable storage medium, and the same technical effects can be achieved.

It will be appreciated by those skilled in the art that embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, magnetic disk storage, optical storage, and the like) having computer-usable program code embodied therein.

The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems) and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flowchart illustrations and/or block diagrams, and combinations of flows and/or blocks in the flowchart illustrations and/or block diagrams, can be implemented by computer-executable instructions. These computer-executable instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

These processor-executable instructions may also be stored in a processor-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the processor-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.

These processor-executable instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present application without departing from the spirit or scope of the application. Thus, if such modifications and variations of the present application fall within the scope of the claims and the equivalents thereof, the present application is intended to cover such modifications and variations.

Claims

1. An information transmission method applied to a target session management functional entity, comprising the following steps:

performing mobility management according to the mobility management context;

2. The information transmission method according to claim 1, wherein the obtaining a mobility management context of at least one session from the session context creation request message includes:

3. The information transmission method of claim 2, wherein the target warehouse entity is deployed by at least one of:

Expanding the defined network function as a warehouse entity;

4. An information transmission method applied to a target access and mobility management functional entity, comprising the following steps:

5. The information transmission method according to claim 4, wherein in the case where the session context creation request message carries at least one mobility management context of the session, before sending the session context creation request message to the target session management function entity corresponding to each session according to the handover resource allocation request message, further comprising:

6. The information transmission method according to claim 4 or 5, characterized in that the handover resource allocation request message carries a mobility management context of at least one of the sessions.

7. The information transmission method according to claim 4, wherein in a case where the session context creation request message does not carry a mobility management context of a session, before sending the session context creation request message to a target session management function entity corresponding to each session according to the handover resource allocation request message, further comprising:

8. The information transmission method according to claim 7, wherein the second information further includes: an access management context corresponding to the at least one session; the context acquisition notification is used to notify the target warehouse entity to acquire a session management context.

9. The information transmission method according to claim 5 or 7, wherein the target warehouse entity is deployed by at least one of:

expanding the defined network function as a warehouse entity;

10. An information transmission method applied to a target warehouse entity, comprising:

performing a context acquisition operation according to the third information;

11. The information transmission method according to claim 10, wherein in the case where the third information includes a first context acquisition request message, the performing a context acquisition operation according to the third information includes:

12. The information transmission method according to claim 11, characterized by further comprising, after performing a context acquisition operation based on the third information:

13. The method according to claim 11, wherein the sending a second context acquisition request message to a source repository entity according to the first context acquisition request message comprises:

14. The information transmission method according to claim 10, wherein in the case where the third information includes a context acquisition notification, the performing a context acquisition operation according to the third information includes:

15. The information transmission method according to any one of claims 10 to 14, wherein the first warehouse entity is deployed by at least one of:

expanding the defined network function as a warehouse entity;

16. An information transmission method applied to a source warehouse entity, comprising:

receiving a context acquisition request message sent by a first entity;

17. The information transmission method of claim 16, wherein the first warehouse entity is deployed by at least one of:

expanding the defined network function as a warehouse entity;

18. An information transmission method applied to a source access and mobility management entity, comprising the following steps:

19. The information transmission method of claim 18, wherein the source warehouse entity is deployed by at least one of:

expanding the defined network function as a warehouse entity;

20. An information transmission device, the information transmission device being a target session management functional entity, comprising a memory, a transceiver, and a processor:

performing mobility management according to the mobility management context;

21. An information transmission device, which is a target access and mobility management functional entity, comprising a memory, a transceiver, and a processor:

22. An information transmission device, the information transmission device being a target warehouse entity, comprising a memory, a transceiver, and a processor:

performing a context acquisition operation according to the third information;

23. An information transmission device, the information transmission device being a source warehouse entity, comprising a memory, a transceiver, and a processor:

24. An information transmission device, the information transmission device being a source access and mobility management entity, comprising a memory, a transceiver, and a processor:

25. An information transmission apparatus applied to a target session management function entity, comprising:

26. An information transmission apparatus applied to a target access and mobility management function entity, comprising:

27. An information transmission apparatus for use with a target warehouse entity, comprising:

28. An information transmission apparatus for use with a source warehouse entity, comprising:

29. An information transmission apparatus applied to a source access and mobility management entity, comprising:

30. A processor-readable storage medium, characterized in that the processor-readable storage medium stores a computer program for causing the processor to perform the method of any one of claims 1 to 19.