WO2024082839A1

WO2024082839A1 - Information transmission method and apparatus, and device

Info

Publication number: WO2024082839A1
Application number: PCT/CN2023/116698
Authority: WO
Inventors: 程志密; 宋雅琴
Original assignee: 大唐移动通信设备有限公司
Priority date: 2022-10-20
Filing date: 2023-09-04
Publication date: 2024-04-25
Also published as: CN117956412A

Abstract

The present disclosure provides an information transmission method and apparatus, and a device. The information transmission method comprises: sending a first request to a radio access network device; and receiving a first response fed back by the radio access network device, wherein the first request carries non-access stratum (NAS) information and first information, and the first information is used for assisting the radio access network device in determining a network node corresponding to the NAS information.

Description

Information transmission method, device and equipment

This disclosure claims priority to a Chinese patent application filed with the Chinese Patent Office on October 20, 2022, with application number 202211292341.1 and application name “A method, device and apparatus for information transmission”, the entire contents of which are incorporated by reference in this disclosure.

Technical Field

The present disclosure relates to the field of communication technology, and in particular to an information transmission method, device and equipment.

Background technique

The future ^6th Generation (6G) communication network tends to adopt a decentralized hierarchical network with centralized and distributed collaboration. The 6G network is organized through centralized and distributed collaboration and distributed autonomy. On the one hand, it will extend more network functions to the edge of the network, and on the other hand, it will concentrate global core functions to support more complex services through cloud-network integration and distributed collaboration.

However, after a terminal successfully registers with multiple (distributed or centralized) core network nodes, it needs to send a Non-Access Stratum (NAS) message to one or more of the core network nodes. The Radio Access Network (RAN) node receives the NAS message, but is unable to determine the corresponding core network node based on the Radio Resource Control (RRC) connection. In this case, how does RAN send the NAS message of the User Equipment (UE, also known as the terminal) to the appropriate core network node? This is a problem that needs to be solved in a distributed network scenario.

Specifically, currently, after a UE successfully registers with the network, there is only one access mobility management function serving the UE for a period of time, and the RAN can send the corresponding NAS message to the service access mobility management function through the established N2 connection based on the RRC connection received from the NAS. Therefore, when the RAN receives the NAS message from the UE, the selection of the access mobility management function is not involved. However, when a UE that has successfully registered with multiple distributed network nodes needs to send different NAS messages to multiple network nodes, if the above processing method is used, the RAN cannot forward the NAS message sent by the UE to the corresponding network node.

As described above, the information transmission scheme for NAS messages in the related art has problems such as inability to accurately transmit.

Summary of the invention

The purpose of the present disclosure is to provide an information transmission method, apparatus and device to solve the problem that the information transmission scheme for NAS messages in the prior art cannot be accurately transmitted.

In order to solve the above technical problems, the present disclosure provides an information transmission method, which is applied to a terminal and includes:

Sending a first request to a wireless access network device;

receiving a first response fed back by the wireless access network device;

The first request carries: non-access layer NAS information and first information, and the first information is used to assist the wireless access network device in determining the network node corresponding to the NAS information.

Optionally, the first information includes at least one of the following:

Network node identification;

Session ID.

Optionally, in the case where the first request is a session establishment request, the first information includes: a network node identifier;

In the case where the first request is a session modification request or a session release request, the first information includes: a session identifier;

In the case that the first request is a service request for activating at least one session, the first information includes: a session identifier; or the first information includes: a network node identifier and a session identifier.

The embodiment of the present disclosure also provides an information transmission method, which is applied to a wireless access network device, including:

receiving a first request sent by a terminal; the first request carries: non-access layer NAS information and first information, the first information being used to assist the wireless access network device in determining a network node corresponding to the NAS information;

Determine, according to the first information, a network node corresponding to the NAS information;

Sending the NAS information to a network function device of the network node;

Receiving a first response fed back by a network function device of the network node;

sending the first response to the terminal;

The network function device is an access mobility management function device or a session management function device.

Optionally, the first information includes at least one of the following:

Network node identification;

Session ID.

Optionally, determining, according to the first information, a network node corresponding to the NAS information includes:

In a case where the first request is a session establishment request, determining, according to the network node identifier, a network node corresponding to the NAS information serving as the session establishment request information;

The sending the NAS information to the network function device of the network node includes:

Sending the NAS information to an access mobility management function device of the network node;

The NAS information carries second information, and the second information includes: location information and a session identifier of the terminal.

In a case where the first request is a session establishment request, determining, according to the network node identifier and the terminal identifier of the terminal, a network node corresponding to the NAS information serving as the session establishment request information;

The NAS information is sent to a session management function device of the network node.

In a case where the first request is a session modification request, determining, according to the session identifier, a network node corresponding to the NAS information serving as session modification request information;

Alternatively, when the first request is a session release request, determining, according to the session identifier, a network node corresponding to the NAS information serving as the session release request information;

The NAS information is sent to an access mobility management function device of the network node.

In a case where the first request is a session modification request, determining, according to the session identifier and the NAS information serving as session modification request information, a network node corresponding to the NAS information;

Alternatively, when the first request is a session release request, determining the network node corresponding to the NAS information according to the session identifier and the NAS information serving as the session release request information;

In a case where the first request is a service request for activating at least one session, determining, according to the session identifier, a network node corresponding to the NAS information serving as the service request information;

The NAS information carries third information, and the third information includes: a session identifier and a terminal identifier of the terminal.

In a case where the first request is a service request for activating at least one session, determining, according to the network node identifier and the session identifier, a network node corresponding to the NAS information serving as the service request information;

Sending the NAS information to a session management function device of the network node;

The NAS information carries fourth information, and the fourth information includes: a session identifier and a terminal identifier of the terminal.

Optionally, in the case where the first request is a session establishment request, the first response carries fifth information, and the fifth information includes: at least one of a session identifier, a terminal identifier of the terminal, and NAS information serving as session establishment acceptance information;

After receiving a first response fed back by the network function device of the network node, the information transmission method further includes:

Sixth information is added to the context information of the terminal, where the sixth information includes: a session identifier and network node information corresponding to the session.

Optionally, in a case where the first request is a service request for activating at least one session, after receiving a first response fed back by the network function device of the network node, the information transmission method further includes:

According to the first response, establish a radio resource control RRC connection with the terminal, and generate context information of the terminal;

The context information includes: a session identifier, a terminal identifier of the terminal, and network node information corresponding to the session.

The embodiment of the present disclosure further provides an information transmission device, which is a terminal and includes a memory, a transceiver, and a processor:

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

Sending a first request to a wireless access network device via the transceiver;

Receiving, by the transceiver, a first response fed back by the wireless access network device;

Optionally, the first information includes at least one of the following:

Network node identification;

Session ID.

The embodiment of the present disclosure further provides an information transmission device, which is a wireless access network device, including a memory, a transceiver, and a processor:

Receiving, by the transceiver, a first request sent by a terminal; the first request carries: non-access layer NAS information and first information, the first information being used to assist the wireless access network device in determining a network node corresponding to the NAS information;

sending the NAS information to a network function device of the network node through the transceiver;

Receiving, by the transceiver, a first response fed back by a network function device of the network node;

Sending the first response to the terminal through the transceiver;

Optionally, the first information includes at least one of the following:

Network node identification;

Session ID.

In the case where the first request is a service request for activating at least one session, the first information includes: a session identifier; or the first information includes: a network node identifier and a session identifier. knowledge.

Alternatively, when the first request is a session release request, NAS information as session release request information, determining a network node corresponding to the NAS information;

The operations also include:

After receiving the first response fed back by the network function device of the network node, sixth information is added to the context information of the terminal, and the sixth information includes: a session identifier and network node information corresponding to the session.

Optionally, the operation further includes:

In the case where the first request is a service request for activating at least one session, upon receiving After the network function device of the network node feeds back a first response, establishing a radio resource control RRC connection with the terminal according to the first response, and generating context information of the terminal;

The present disclosure also provides an information transmission device, which is applied to a terminal and includes:

A first sending unit, configured to send a first request to a wireless access network device;

A first receiving unit, configured to receive a first response fed back by the wireless access network device;

Optionally, the first information includes at least one of the following:

Network node identification;

Session ID.

The embodiment of the present disclosure further provides an information transmission device, which is applied to a wireless access network device, including:

A second receiving unit is configured to receive a first request sent by a terminal; the first request carries: non-access layer NAS information and first information, the first information being used to assist the wireless access network device in determining a network node corresponding to the NAS information;

A first determining unit, configured to determine a network node corresponding to the NAS information according to the first information;

A second sending unit, configured to send the NAS information to a network function device of the network node;

A third receiving unit, configured to receive a first response fed back by the network function device of the network node;

A third sending unit, configured to send the first response to the terminal;

Optionally, the first information includes at least one of the following:

Network node identification;

Session ID.

The information transmission device also includes:

The first processing unit is used to add sixth information to the context information of the terminal after receiving a first response fed back by the network function device of the network node, wherein the sixth information includes: a session identifier and network node information corresponding to the session.

Optionally, the information transmission device further includes:

a second processing unit, configured to, when the first request is a service request for activating at least one session, establish a radio resource control RRC connection with the terminal according to the first response after receiving a first response fed back by the network function device of the network node, and generate context information of the terminal;

An embodiment of the present disclosure further provides a processor-readable storage medium, wherein the processor-readable storage medium stores a computer program, and the computer program is used to enable the processor to execute the above-mentioned information transmission method on the terminal side or the wireless access network device side.

The beneficial effects of the above technical solution disclosed in the present invention are as follows:

In the above scheme, the information transmission method sends a first request to the wireless access network device; receives a first response fed back by the wireless access network device; wherein the first request carries: non-access layer NAS information and first information, and the first information is used to assist the wireless access network device in determining the network node corresponding to the NAS information; it can support the realization that when the terminal is registered with at least one network node, the wireless access network device can still accurately forward the NAS information of the terminal to the corresponding network node to ensure the accurate transmission of the NAS message, which well solves the problem that the information transmission scheme for NAS messages in the prior art cannot be accurately transmitted.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG1 is a schematic diagram of a wireless communication system architecture according to an embodiment of the present disclosure;

FIG2 is a schematic diagram of uplink information transmission according to an embodiment of the present disclosure;

FIG3 is a schematic diagram of a distributed autonomous 6G system architecture according to an embodiment of the present disclosure;

FIG4 is a schematic diagram of a flow chart of an information transmission method according to an embodiment of the present disclosure;

FIG5 is a second flow chart of the information transmission method according to an embodiment of the present disclosure;

FIG6 is a schematic diagram of a specific implementation flow of the information transmission method according to an embodiment of the present disclosure;

FIG. 7 is a second schematic diagram of a specific implementation flow of the information transmission method according to an embodiment of the present disclosure;

FIG8 is a schematic diagram of a third specific implementation flow of the information transmission method according to an embodiment of the present disclosure;

FIG9 is a fourth schematic diagram of a specific implementation flow of the information transmission method according to an embodiment of the present disclosure;

FIG10 is a schematic diagram of a fifth specific implementation flow of the information transmission method according to an embodiment of the present disclosure;

FIG11 is a schematic diagram of a sixth specific implementation flow of the information transmission method according to an embodiment of the present disclosure;

FIG12 is a schematic diagram of the structure of an information transmission device according to an embodiment of the present disclosure;

FIG13 is a second structural diagram of an information transmission device according to an embodiment of the present disclosure;

FIG14 is a structural schematic diagram 1 of an information transmission device according to an embodiment of the present disclosure;

FIG. 15 is a second structural diagram of the information transmission device according to an embodiment of the present disclosure.

Detailed ways

The following will be combined with the drawings in the embodiments of the present disclosure to clearly and completely describe the technical solutions in the embodiments of the present disclosure. Obviously, the described embodiments are only part of the embodiments of the present disclosure, not all of the embodiments. Based on the embodiments in the present disclosure, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present disclosure.

In the embodiments of the present disclosure, the term "and/or" describes the association relationship of associated objects, indicating that three relationships may exist. For example, A and/or B may represent three situations: A exists alone, A and B exist at the same time, and B exists alone. The character "/" generally indicates that the associated objects before and after are in an "or" relationship.

The term "plurality" in the embodiments of the present disclosure refers to two or more than two, and other quantifiers are similar thereto.

It should be noted that the technical solution provided by the embodiments of the present disclosure can be applicable to a variety of systems, especially the ^5th Generation (5G) communication system. For example, the applicable system can be the global system of mobile communication (GSM) system, the code division multiple access (CDMA) system, the 5G network ... The system includes terminal equipment and network equipment. The system may also include core network parts, such as Evolved Packet System (EPS) and 5G System (5G System, 5GS).

Fig. 1 shows a block diagram of a wireless communication system to which the embodiments of the present disclosure can be applied. The wireless communication system includes a terminal device (referred to as a terminal) and a network device.

The terminal device involved in the embodiments of the present disclosure 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 devices connected to a wireless modem. In different systems, the names of terminal devices may also be different. For example, in a 5G system, the terminal device may be called a user equipment (UE). A wireless terminal device may communicate with one or more core networks (CN) via a radio access network (RAN). A wireless terminal device may be a mobile terminal device, such as a mobile phone (or a "cellular" phone) and a computer with a mobile terminal device. For example, it may be a portable, pocket-sized, handheld, computer-built-in or vehicle-mounted mobile device that exchanges language and/or data with a radio access network. For example, personal communication service (PCS) phones, cordless phones, session initiation protocol (SIP) phones, wireless local loop (WLL) stations, personal digital assistants (PDA) and other devices. The wireless terminal device may also be referred to as a system, a subscriber unit, a subscriber station, a mobile station, a mobile station, a remote station, an access point, a remote terminal device, an access terminal device, a user terminal device, a user agent, and a user device, but is not limited in the embodiments of the present disclosure.

The network device involved in the embodiment of the present disclosure may be a base station, which may include multiple The cell that the end provides service. Depending on the specific application scenario, the base station can also be called an access point, or it can be a device in the access network that communicates with the wireless terminal device through one or more sectors on the air interface, or other names. The network device can be used to convert the received air frames with Internet Protocol (IP) packets and act as a router between the wireless terminal device and the rest of the access network, where the rest of the access network may include an Internet Protocol (IP) communication network. The network device can also coordinate the attribute management of the air interface. For example, the network device involved in the embodiments of the present disclosure may be a network device (Base Transceiver Station, BTS) in the Global System for Mobile communications (Global System for Mobile communications, GSM) or Code Division Multiple Access (Code Division Multiple Access, CDMA), or a network device in Wide-band Code Division Multiple Access (WCDMA): Node B (NodeB, NB), or an evolutionary network device (evolutional Node B, eNB or e-NodeB) in the long term evolution (long term evolution, LTE) system, a 5G base station in the 5G network architecture (next generation system), i.e., the next generation Node B (the next Generation Node B, gNB), or a home evolved Node B (Home evolved Node B, HeNB), a relay node, a home base station (femto), a pico base station (pico), etc., which is not limited in the embodiments of the present disclosure. In some network structures, the network device may include a centralized unit (CU) node and a distributed unit (DU) node, and the centralized unit and the distributed unit may also be arranged geographically separately.

Network devices and terminal devices can each use one or more antennas for multiple input multiple output (MIMO) transmission. MIMO transmission can be single user MIMO (SU-MIMO) or multi-user MIMO (MU-MIMO). Depending on the form and number of antenna combinations, MIMO transmission can be 2D-MIMO, 3D-MIMO, full-dimensional MIMO (FD-MIMO) or massive MIMO, or it can be diversity transmission, precoded transmission or beamforming transmission, etc.

The following first introduces the contents involved in the solution provided by the embodiment of the present disclosure.

1. About the RRC connection between UE and RAN - Uplink information transfer (UL information transfer);

At present, when the UE has registered with the network, if the UE needs to send a NAS message, as shown in Figure 2, this message flow will be triggered, that is, UL information transfer, and the only parameter carried is the NAS message. When the RAN receives the message, it determines the corresponding UE based on the RRC connection that receives the message, and then based on the UE context information generated during the registration process, it can determine the access mobility management function that serves the UE; thus, the NAS message is encapsulated into an N2 interface message (referred to as N2 message) and sent to the access mobility management function. Among them, the N2 interface is the interface between the RAN and the access mobility management function.

2. 6G distributed network architecture vision;

The important trend of 6G network development is centralized and distributed network architecture. The original design of 5G and previous generations of network architecture is centralized control, that is, the core network room is centrally deployed based on demand to achieve the centralized deployment of core network functions. With the development of the network, facing the dual driving forces of business scenarios and technological development, the architecture design of 6G network needs to consider the distributed architecture, and its control gradually evolves towards distribution. With the distributed development of intelligence and cloud computing, new connections and new networks will also be distributed.

6G will be oriented to diversified scenarios and network requirements in the air, sky, land, and sea, and the centralized network architecture cannot uniformly meet all scenarios. To meet this challenge, the 6G network architecture needs to go beyond centralized control and gradually evolve to a distributed architecture, extending more network functions (such as authentication and authorization) to the edge of the network, and establishing distributed homogeneous micro-cloud units with different functional levels. Each micro-cloud unit is self-contained and has complete control and data forwarding functions. Multiple micro-cloud units can form autonomous micro-networks according to business needs, and provide targeted network services according to specific business scenarios, user scale, geographical environment and other requirements. Among them, the above-mentioned micro-cloud units are also called distributed network nodes, representing an on-demand customized or fully functional core network. Specifically, for the distributed autonomous 6G system architecture, please refer to Figure 3.

3. Distributed network selection;

In the scenario where RAN is connected to multiple network nodes (centralized nodes or distributed nodes) at the same time, after receiving the registration request from the UE, it selects a suitable network node for the UE based on the registration request message, and then provides services for the UE. At the same time, the access mobility management function of the network node allocates the network node information that the UE can access, such as the network node identification information. The UE saves it after receiving it.

Based on the above, the present disclosure provides an information transmission method, device and equipment for The problem that the information transmission scheme for NAS messages in the prior art cannot be accurately transmitted is solved. Among them, the method, device and equipment are based on the same application concept. Since the principles of solving the problems by the method, device and equipment are similar, the implementation of the method, device and equipment can refer to each other, and the repeated parts will not be repeated.

The information transmission method provided in the embodiment of the present disclosure is applied to a terminal, as shown in FIG4 , and includes:

Step 41: Send a first request to a wireless access network device;

Step 42: Receive a first response fed back by the wireless access network device; wherein the first request carries: non-access layer NAS information and first information, and the first information is used to assist the wireless access network device in determining a network node corresponding to the NAS information.

In the embodiment of the present disclosure, the method may further include: establishing a radio resource control RRC connection with the RAN according to the first response, but the method is not limited thereto.

The information transmission method provided by the embodiment of the present disclosure sends a first request to a wireless access network device; receives a first response fed back by the wireless access network device; wherein the first request carries: non-access layer NAS information and first information, and the first information is used to assist the wireless access network device in determining the network node corresponding to the NAS information; it can support the realization that when the terminal is registered with at least one network node, the wireless access network device can still accurately forward the NAS information of the terminal to the corresponding network node to ensure the accurate transmission of the NAS message, which well solves the problem that the information transmission scheme for NAS messages in the prior art cannot be accurately transmitted.

The first information includes at least one of the following: a network node identifier; a session identifier.

In an embodiment of the present disclosure, when the first request is a session establishment request, the first information includes: a network node identifier; when the first request is a session modification request or a session release request, the first information includes: a session identifier; when the first request is a service request for activating at least one session, the first information includes: a session identifier; or, the first information includes: a network node identifier and a session identifier.

The embodiment of the present disclosure further provides an information transmission method, which is applied to a wireless access network device, as shown in FIG5 , and includes:

Step 51: receiving a first request sent by a terminal; the first request carries: non-access layer NAS information and first information, the first information being used to assist the wireless access network device in determining a network node corresponding to the NAS information;

Step 52: Determine the network node corresponding to the NAS information according to the first information;

Step 53: Send the NAS information to the network function device of the network node;

Step 54: receiving a first response fed back by the network function device of the network node;

Step 55: Send the first response to the terminal; wherein the network function device is an access mobility management function device or a session management function device.

The information transmission method provided by the embodiment of the present disclosure receives a first request sent by a terminal; the first request carries: non-access layer NAS information and first information, the first information is used to assist the wireless access network device to determine the network node corresponding to the NAS information; according to the first information, determine the network node corresponding to the NAS information; send the NAS information to the network function device of the network node; receive a first response fed back by the network function device of the network node; send the first response to the terminal; wherein the network function device is an access mobility management function device or a session management function device; it can support the realization that when the terminal is registered with at least one network node, the wireless access network device can still accurately forward the NAS information of the terminal to the corresponding network node to ensure the accurate transmission of the NAS message, which well solves the problem that the information transmission scheme for NAS messages in the prior art cannot be accurately transmitted.

The determining, based on the first information, the network node corresponding to the NAS information includes: when the first request is a session establishment request, determining, based on the network node identifier, the network node corresponding to the NAS information serving as session establishment request information; the sending of the NAS information to the network function device of the network node includes: sending the NAS information to an access mobility management function device of the network node; the NAS information carries second information, and the second information includes: location information and a session identifier of the terminal.

This can support accurate implementation of NAS information transmission in scenarios where the RAN and session management functions cannot directly access each other.

In the disclosed embodiment, determining the network node corresponding to the NAS information based on the first information includes: when the first request is a session establishment request, determining the network node corresponding to the NAS information serving as session establishment request information based on the network node identifier and the terminal identifier of the terminal; and sending the NAS information to a network function device of the network node includes: sending the NAS information to a session management function device of the network node.

This can support accurate implementation of NAS information transmission in scenarios where RAN and session management functions can directly access each other. In the disclosed embodiment, the session establishment request can also carry a session management function payload and a local configuration policy of the wireless access network device to determine the session management function of the network node.

Among them, determining the network node corresponding to the NAS information according to the first information includes: when the first request is a session modification request, determining the network node corresponding to the NAS information as session modification request information according to the session identifier; or, when the first request is a session release request, determining the network node corresponding to the NAS information as session release request information according to the session identifier; sending the NAS information to the network function device of the network node includes: sending the NAS information to the access mobility management function device of the network node.

In the disclosed embodiment, determining the network node corresponding to the NAS information based on the first information includes: when the first request is a session modification request, determining the network node corresponding to the NAS information based on the session identifier and the NAS information serving as session modification request information; or, when the first request is a session release request, determining the network node corresponding to the NAS information based on the session identifier and the NAS information serving as session release request information; sending the NAS information to a network function device of the network node includes: sending the NAS information to a session management function device of the network node.

This can support accurate implementation of NAS information transmission in scenarios where RAN and session management functions can directly access each other.

Wherein, the determining, according to the first information, the network node corresponding to the NAS information includes: in the case where the first request is a service request for activating at least one session, determining, according to the first information, the network node corresponding to the NAS information The method comprises: sending the NAS information to an access mobility management function device of the network node; wherein the NAS information carries third information, and the third information comprises: a session identifier and a terminal identifier of the terminal.

In the disclosed embodiment, determining the network node corresponding to the NAS information based on the first information includes: in a case where the first request is a service request for activating at least one session, determining the network node corresponding to the NAS information as service request information based on the network node identifier and the session identifier; sending the NAS information to a network function device of the network node includes: sending the NAS information to a session management function device of the network node; wherein the NAS information carries fourth information, and the fourth information includes: a session identifier and a terminal identifier of the terminal.

Among them, when the first request is a session establishment request, the first response carries fifth information, and the fifth information includes: a session identifier, a terminal identifier of the terminal, and at least one of NAS information serving as session establishment acceptance information; after receiving the first response fed back by the network function device of the network node, it also includes: adding sixth information to the context information of the terminal, and the sixth information includes: a session identifier, and network node information corresponding to the session.

This can correspondingly update the context information of the terminal.

In an embodiment of the present disclosure, when the first request is a service request for activating at least one session, after receiving a first response fed back by a network function device of the network node, it also includes: establishing a radio resource control RRC connection with the terminal according to the first response, and generating context information of the terminal; wherein the context information includes: a session identifier, a terminal identifier of the terminal, and network node information corresponding to the session.

This will fully activate the relevant sessions.

The embodiment of the present disclosure also provides an information transmission method, which is applied to a network function device, comprising: receiving NAS information sent by a wireless access network device; and transmitting to the wireless access network device according to the NAS information. The access network device sends a first response; wherein the network function device is an access mobility management function device or a session management function device.

The information transmission method provided by the embodiment of the present disclosure receives NAS information sent by a wireless access network device; sends a first response to the wireless access network device according to the NAS information; wherein the network function device is an access mobility management function device or a session management function device; and can support the realization that when a terminal is registered to at least one network node, the wireless access network device can still accurately forward the NAS information of the terminal to the corresponding network node to ensure the accurate transmission of the NAS message, and make a corresponding response to the NAS message, which well solves the problem that the information transmission scheme for NAS messages in the prior art cannot be accurately transmitted.

Furthermore, in the case where the network function device is an access mobility management function device, before sending a first response to the wireless access network device according to the NAS information, it also includes: determining the session management function device corresponding to the NAS information according to the location information of the terminal carried by the NAS information, the session management function load, and the local policy of the access mobility management function device; or determining the session management function device corresponding to the NAS information according to the terminal identifier and the session identifier carried by the NAS information; sending the NAS information to the session management function device; and receiving a first response fed back by the session management function device.

This can support accurate implementation of NAS information transmission and response in scenarios where the RAN and session management functions cannot directly access each other.

The information transmission method provided in the embodiment of the present disclosure is described below by way of example.

In response to the above technical problems, the embodiments of the present disclosure provide an information transmission method, which can be specifically implemented as a method for processing NAS messages under a distributed network architecture, involving: under a distributed network architecture, assuming that the UE has successfully registered with multiple distributed network nodes, when the UE sends a NAS message to one or more network nodes, in addition to carrying the NAS message, it is also necessary to carry other parameters for the RAN to determine (identify) the corresponding network node, and then the RAN correctly forwards the NAS message to the corresponding network node. Among them, other parameters include but are not limited to information such as network node identifier, UE identifier, session identifier, etc. It is hereby explained that the network node mentioned in the embodiments of the present disclosure can also be called a distributed network node, representing an on-demand customized or fully functional core network, but is not limited to this.

The embodiments of the present disclosure are described below with specific examples.

Example 1: UE-initiated session establishment, modification or release process - RAN and session management functions cannot directly access each other;

Example 1.1, UE-initiated session establishment process - RAN and session management functions cannot directly access each other;

As shown in Figure 6, this example includes the following steps:

Step 61. When the UE needs to establish a session, it sends a session establishment request to the RAN (corresponding to the first request as a session modification request), and the message carried includes the network node identifier for the session to be established (corresponding to the first information), a NAS message (session establishment request message; corresponding to the NAS information) and other information; corresponding to the first request sent to the wireless access network device.

Step 62. After receiving the session establishment request message, the RAN selects an access mobility management function (corresponding to the access mobility management function device) (corresponding to the above-mentioned access mobility management function device) based on the network node identifier and other information in the carried information, that is, selects the access mobility management function of the target network node; corresponding to the first request sent by the above-mentioned receiving terminal, when the first request is a session establishment request, the RAN determines the network node corresponding to the NAS information as the session establishment request information according to the network node identifier. The access mobility management function may also be called the access and mobility management function.

Step 63. RAN sends a session establishment request message (corresponding to a NAS message) to the selected access mobility management function, and may carry information such as UE location information, session management function load, and local policy (corresponding to the above-mentioned second information); corresponding to the above-mentioned sending of the NAS information to the access mobility management function device of the network node, the NAS information carries the second information. The access mobility management function selects a session management function based on information such as UE location information, and sends a NAS message (session establishment request message) to the session management function; corresponding to the above-mentioned determination of the session management function device corresponding to the NAS information based on the terminal location information, session management function load, and local policy of the access mobility management function device carried in the NAS information; and sending the NAS information to the session management function device.

Step 64: Session establishment process. For details of this step, please refer to the current process and will not be repeated here.

Step 65. After the session management function completes the session establishment, it sends a setup acceptance message to the UE (corresponding to the above-mentioned session setup acceptance information), which may carry information including: UE identity, session identity, NAS message (session setup acceptance message) and other information (corresponding to the above-mentioned fifth information); corresponding to the above-mentioned RAN receiving the first response fed back by the network function device of the network node; sending the first response to the terminal, the first response carrying the fifth information. At the same time, the RAN may store the UE (locally stored) Add the following information (corresponding to the sixth information) to the context information of the terminal: session identifier, network node identifier corresponding to the session (included in the above network node information), access mobility management function information (included in the above network node information) and other information (corresponding to the sixth information); corresponding to the sixth information added to the context information of the terminal.

Example 1.2, UE-initiated session modification or release process - RAN and session management functions cannot directly access each other;

As shown in Figure 7, this example includes the following steps:

Step 71. When the UE needs to modify or release the session, it sends a session modification or release request to the RAN (corresponding to the above-mentioned first request as a session modification request or a session release request), and the carried message includes: a session identifier for modifying or releasing the session (which can be embodied as an identifier list; corresponding to the above-mentioned first information), a NAS message (a session modification or release request message, corresponding to the above-mentioned NAS information) and other information; corresponding to the above-mentioned first request sent to the wireless access network device.

Step 72. The RAN receives a session modification or release request, and selects a corresponding access mobility management function (i.e., the access mobility management function of the target network node) based on the UE identifier, session identifier, etc. in the carried information; corresponding to the first request sent by the above-mentioned receiving terminal, when the first request is a session modification request, the network node corresponding to the NAS information serving as the session modification request information is determined according to the session identifier; or, when the first request is a session release request, the network node corresponding to the NAS information serving as the session release request information is determined according to the session identifier.

Step 73. RAN sends a session modification or release request message (corresponding to a NAS message) to the selected access mobility management function; corresponding to the sending of the NAS information to the access mobility management function device of the network node. The access mobility management function sends a session modification or release request to the session management function serving the session based on the information in the session modification or release request message, such as the session identifier and other information; corresponding to the determining of the session management function device corresponding to the NAS information according to the terminal identifier and session identifier carried by the NAS information; and sending the NAS information to the session management function device.

Step 74: Session modification or release process. For details of this step, please refer to the current process and will not be repeated here.

Step 75. After the session management function completes the session modification or release, it sends a modification or release message to the UE. Accept the message.

Example 2: UE-initiated session establishment, modification or release process - RAN and session management functions can directly access each other;

Example 2.1, UE-initiated session establishment process - RAN and session management functions can directly access each other;

As shown in FIG8 , this example includes the following steps:

Step 81. When the UE needs to establish a session, it sends a session establishment request to the RAN (corresponding to the first request as a session modification request), and the message carried includes the network node identifier for establishing the session (corresponding to the first information), a NAS message (session establishment request message, corresponding to the NAS information) and other information; corresponding to the first request sent to the wireless access network device.

Step 82. The RAN receives the session establishment request, and selects the corresponding session management function (of the network node) based on the network node identifier, UE identifier, session management function load, and local configuration policy in the information carried; corresponding to the first request sent by the above-mentioned receiving terminal, when the first request is a session establishment request, the network node corresponding to the NAS information as the session establishment request information is determined according to the network node identifier and the terminal identifier of the terminal.

Step 83. RAN sends a session establishment request message (corresponding to a NAS message) to the selected session management function; corresponding to the above-mentioned sending of the NAS information to the session management function device of the network node.

Step 84: Session establishment process. For details of this step, please refer to the current process and will not be repeated here.

Step 85. After the session management function completes the session establishment, it sends an establishment acceptance message to the UE (corresponding to the above-mentioned session establishment acceptance information); corresponding to the above-mentioned RAN receiving the first response fed back by the network function device of the network node; sending the first response to the terminal, the first response carrying the fifth information. At the same time, the RAN can add the following information (corresponding to the above-mentioned sixth information) to the context information of the UE (locally stored): session identifier, network node identifier corresponding to the session (included in the above-mentioned network node information), session management function information (included in the above-mentioned network node information), etc. in the context information of the UE (locally stored); corresponding to the above-mentioned addition of the sixth information to the context information of the terminal.

Example 2.2, UE-initiated session modification or release process - RAN and session management functions can directly access each other;

As shown in FIG9 , this example includes the following steps:

Step 91. When the UE needs a session modification or release procedure, it sends a session modification or release procedure to the RAN. The request (corresponding to the above-mentioned first request as a session modification request or a session release request) carries a message including at least: a session identifier of the session that needs to be modified or released (which can be embodied as an identifier list; corresponding to the above-mentioned first information), a NAS message (modify or release session request, corresponding to the above-mentioned NAS information) and other information; corresponding to the above-mentioned first request sent to the wireless access network device.

Step 92. The RAN receives a session modification or release request message, and selects a corresponding session management function based on the UE identifier, session identifier (list), NAS message (modify or release session request) and other information carried in the information; corresponding to the first request sent by the above-mentioned receiving terminal, when the first request is a session modification request, the network node corresponding to the NAS information is determined according to the session identifier and the NAS information as the session modification request information; or, when the first request is a session release request, the network node corresponding to the NAS information is determined according to the session identifier and the NAS information as the session release request information.

Step 93. RAN sends a session modification or release request message (corresponding to a NAS message) to the selected session management function; corresponding to the above-mentioned sending of the NAS information to the session management function device of the network node.

Step 94: Session modification or release process. For details of this step, please refer to the current process and will not be repeated here.

Step 95: After completing the modification or release, the session management function sends a modification or release acceptance message to the UE.

Example 3: UE initiates the activation of some or a certain session process - RAN and session management functions cannot directly access each other;

As shown in Figure 10, this example includes the following steps:

Step 101. When the UE establishes multiple sessions in different networks and some of them are in an inactive state and the UE is in a connected state, if it is necessary to activate some or a certain session, the UE sends a service request to the RAN (corresponding to the above-mentioned first request as a service request for activating at least one session), and the request message may carry: (needs to be activated) session identifier (which may be reflected as an identifier list, corresponding to the above-mentioned first information), NAS message (service request message, corresponding to the above-mentioned NAS information) and other information; corresponding to the above-mentioned sending of the first request to the wireless access network device.

Step 102. After receiving the service request, the RAN selects the corresponding access mobility management function (of the network node) based on the carried session identifier and UE identifier; corresponding to the first A request, when the first request is a service request for activating at least one session, determining, according to the session identifier, a network node corresponding to the NAS information as the service request information. Wherein, the network node identifier corresponding to the session can be obtained based on the session identifier, and then the corresponding access mobility management function is obtained, but this is not limited to this.

Step 103. RAN sends a service request message (corresponding to a NAS message) to the (selected) access mobility management function, and the message carried may include: UE identity, session identity to be activated (list), NAS message (service request message) and other information; corresponding to the sending of the NAS information to the access mobility management function device of the network node, the NAS message carries the third information. The access mobility management function may select a session management function based on information such as UE location information, and send a NAS message (service request message) to the session management function; corresponding to the determining of the session management function device corresponding to the NAS information according to the terminal location information carried by the NAS information, the session management function load, and the local policy of the access mobility management function device; sending the NAS information to the session management function device; or, the access mobility management function may send a service request message to the session management function serving the session based on information in the service request message, such as the session identity and other information; corresponding to the determining of the session management function device corresponding to the NAS information according to the terminal identity and session identity carried by the NAS information; sending the NAS information to the session management function device.

Step 104: Session activation process. For details of this step, please refer to the current process and will not be repeated here.

Step 105. Based on the message in step 104, the RAN establishes an RRC connection with the UE and generates context information of the UE, where the context information may include information such as the UE identifier, the session identifier, and the network node identifier corresponding to the session (included in the above network node information); corresponding to the above, according to the first response, a radio resource control RRC connection is established with the terminal and the context information of the terminal is generated.

Example 4: UE initiates the activation of some or a certain session process - RAN and session management functions can directly access each other;

As shown in Figure 11, this example includes the following steps:

Step 111. When the UE establishes multiple sessions in different networks and some of them are inactive, the UE is in a connected state, and some or a certain session needs to be activated, the UE sends a service request to the RAN (corresponding to the first request for activating at least one session), and the request message may include: Carrying the corresponding session identifier that needs to be activated (which can be reflected as an identifier list, corresponding to the above-mentioned first information), NAS message (service request message, corresponding to the above-mentioned NAS information) and other information; corresponding to the above-mentioned sending of the first request to the wireless access network device.

Step 112. After receiving the service request, the RAN selects the corresponding session management function based on the network node identifier, the UE identifier, and the session identifier (list) to be activated; corresponding to the first request sent by the above-mentioned receiving terminal, in the case where the first request is a service request for activating at least one session, the network node corresponding to the NAS information as the service request information is determined according to the network node identifier and the session identifier. At this time, the selection of the session management function involves: the RAN needs to access the mobility management function or the data plane function in the network node (the network node corresponding to the network node identifier) to obtain the session management function that serves the activated session, or select an intermediate session management function to interact with the session function of the activated session to activate the corresponding session, but is not limited to this.

Step 113. RAN sends a service request message (corresponding to a NAS message) to the (selected) session management function, and the carried message may include: UE identifier, session identifier to be activated (list), NAS message (service request message) and other information; corresponding to the above-mentioned sending of the NAS information to the session management function device of the network node, the NAS information carries the fourth information.

Step 114: Session activation process. For details of this step, please refer to the current process and will not be repeated here.

Step 115. Based on the message in step 114, the RAN establishes an RRC connection with the UE and generates context information of the UE, where the context information may include information such as the UE identifier, the session identifier, the network node identifier corresponding to the session (included in the above network node information), and the session management function information (included in the above network node information); corresponding to the above, according to the first response, a radio resource control RRC connection is established with the terminal and the context information of the terminal is generated.

It should be noted that the above examples can refer to each other, and similar contents will not be repeated here.

From the above, the solution provided by the embodiment of the present disclosure involves: under the architecture of a distributed network, assuming that the UE has successfully registered with the network, when the UE sends a NAS message to a certain network node, in addition to carrying the NAS message, it also carries other parameters to determine (identify) the corresponding network node, and then the RAN correctly forwards the NAS message to the corresponding network node, wherein the other parameters include but are not limited to information such as a network node identifier, a UE identifier, and a session identifier; specifically involves the following contents:

1.UE triggers session establishment:

1.1, send a session establishment request to RAN.

The carried message includes information such as the network node identifier for establishing the session, the UE identifier, the session identifier, and the NAS message (session establishment request message).

1.2.1, based on 1.1, RAN selects the corresponding access mobility management function based on the network node identifier, UE identifier and other information carried in the information.

1.2.2, based on 1.1, RAN selects the corresponding session management function based on the network node identifier, UE identifier, session management function load and local configuration policy in the carried information.

1.3.1, based on 1.2.1, the RAN sends a session establishment request message to the access mobility management function.

Among them, it can carry information such as UE location information, session identifier, NAS message (session establishment request message) and so on.

1.3.2. Based on 1.2.2, the RAN sends a session establishment request message to the selected session management function.

1.4. Based on 1.3.1, the access mobility management function may select a session management function based on UE location information, session management function load, local policy and other information, and send a session establishment request message to the session management function.

1.5, the session management function sends a setup accept message to the UE.

The carried messages may include information such as UE identification, session identification, session establishment acceptance message, etc.; RAN generates UE context information, including: UE identification, session identification, network node identification corresponding to the session, access mobility management or session management function information, etc.

2.UE triggers session modification or release:

2.1, send a session modification or release request to RAN.

The carried messages include information such as session identifiers (lists) that can modify or release sessions, UE identifiers, and NAS messages (session modification or release request messages).

2.2.1, based on 2.1, RAN selects the corresponding access mobility management function based on the UE identifier and session identifier (list) in the carried information, and sends a session modification or release request message.

2.2.2, based on 2.1, RAN selects the corresponding session management function based on the UE identifier, session identifier, NAS message (modify or release session request) and other information carried in the information; and sends a session modification or release request message to the selected session management function.

2.3. Based on 2.2.1, the access mobility management function sends a session modification or release request to the session management function serving the session based on the information in the session modification or release request message, such as the UE identifier, session identifier and other information.

3.UE triggers activation of some or a certain session:

3.1, Send a service request to RAN.

The request message may carry information such as the UE identifier, the corresponding session identifier (list) that needs to be activated, and the NAS message (service request message).

3.2.1, based on 3.1, RAN can select the corresponding access mobility management function based on the network node identifier and UE identifier.

3.2.2, based on 3.1, RAN can select the corresponding session management function based on the network node identifier, UE identifier, and session identifier (list) that needs to be activated.

3.3.1, based on 3.2.1, the RAN sends a service request message to the access mobility management function, and the message carried may include: UE identity, session identity to be activated (list), NAS message (service request message) and other information.

3.3.2, based on 3.2.2, the RAN sends a service request message to the session management function, and the message carried may include: UE identity, session identity to be activated (list), NAS message (service request message) and other information.

3.4, RAN establishes an RRC connection with the UE and generates context information of the UE. The context information may include: UE identifier, session identifier, network node identifier corresponding to the session, access mobility management function information or session management function information and other information.

In summary, the present disclosure provides a method for processing NAS messages in an access network under a distributed network architecture, which can correctly send the NAS message of the UE to the corresponding network node; and the RAN can quickly process the NAS message of the UE without increasing the processing complexity of the RAN.

The embodiment of the present disclosure further provides an information transmission device, which is a terminal, as shown in FIG12 , including a memory 121, a transceiver 122, and a processor 123:

The memory 121 is used to store computer programs; the transceiver 122 is used to send and receive data under the control of the processor 123; the processor 123 is used to read the computer program in the memory 121 and perform the following operations:

Sending a first request to a wireless access network device via the transceiver 122;

Receiving, by the transceiver 122, a first response fed back by the wireless access network device;

The information transmission device provided by the embodiment of the present disclosure sends a first request to a wireless access network device; receives a first response fed back by the wireless access network device; wherein the first request carries: non-access layer NAS information and first information, and the first information is used to assist the wireless access network device in determining the network node corresponding to the NAS information; it can support the realization that when the terminal is registered to at least one network node, the wireless access network device can still accurately forward the NAS information of the terminal to the corresponding network node to ensure the accurate transmission of the NAS message, which well solves the problem that the information transmission scheme for NAS messages in the prior art cannot be accurately transmitted.

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

Among them, in Figure 12, the bus architecture may include any number of interconnected buses and bridges, specifically one or more processors represented by processor 123 and various circuits of memory represented by memory 121 are linked together. The bus architecture can also link various other circuits such as peripherals, regulators, and power management circuits together, which are all well known in the art, so they are not further described herein. The bus interface provides an interface. The transceiver 122 can be a plurality of components, that is, including a transmitter and a receiver, providing a unit for communicating with various other devices on a transmission medium, and these transmission media include, these transmission media include wireless channels, wired channels, optical cables and other transmission media. For different user devices, the user interface 124 can also be an interface that can be connected to the required devices externally and internally, and the connected devices include but are not limited to a keypad, a display, a speaker, a microphone, a joystick, etc.

The processor 123 is responsible for managing the bus architecture and general processing, and the memory 121 can store data used by the processor 123 when performing operations.

Optionally, processor 123 can be a central processing unit (CPU), an application specific integrated circuit (ASIC), a field programmable gate array (FPGA) or a complex programmable logic device (CPLD), and the processor can also adopt a multi-core architecture.

The processor calls the computer program stored in the memory to execute any of the methods provided by the embodiments of the present disclosure according to the obtained executable instructions. The processor and the memory can also be arranged physically separately.

In the embodiment of the present disclosure, when the first request is a session establishment request, the first The information includes: a network node identifier; when the first request is a session modification request or a session release request, the first information includes: a session identifier; when the first request is a service request for activating at least one session, the first information includes: a session identifier; or, the first information includes: a network node identifier and a session identifier.

It should be noted here that the above-mentioned device provided by the embodiment of the present disclosure can implement all the method steps implemented by the above-mentioned terminal side method embodiment, and can achieve the same technical effect. The parts and beneficial effects of this embodiment that are the same as the method embodiment will not be described in detail here.

The embodiment of the present disclosure further provides an information transmission device, which is a wireless access network device, as shown in FIG13 , including a memory 131, a transceiver 132, and a processor 133:

The memory 131 is used to store computer programs; the transceiver 132 is used to send and receive data under the control of the processor 133; the processor 133 is used to read the computer program in the memory 131 and perform the following operations:

Receiving, by the transceiver 132, a first request sent by a terminal; the first request carries: non-access layer NAS information and first information, the first information being used to assist the wireless access network device in determining a network node corresponding to the NAS information;

sending the NAS information to the network function device of the network node through the transceiver 132;

Receiving, through the transceiver 132, a first response fed back by the network function device of the network node;

Sending the first response to the terminal through the transceiver 132;

The information transmission device provided in the embodiment of the present disclosure receives a first request sent by a terminal; the first request carries: non-access layer NAS information and first information, the first information is used to assist the wireless access network device to determine the network node corresponding to the NAS information; determine the network node corresponding to the NAS information according to the first information; send the NAS information to the network function device of the network node; receive a first response fed back by the network function device of the network node; send the first response to the terminal; wherein the network function device is an access mobility management Functional device or session management functional device; it can support the realization that when the terminal is registered to at least one network node, the wireless access network device can still accurately forward the NAS information of the terminal to the corresponding network node to ensure the accurate transmission of the NAS message, which well solves the problem that the information transmission scheme for NAS messages in the prior art cannot be accurately transmitted.

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

Among them, in Figure 13, the bus architecture can include any number of interconnected buses and bridges, specifically one or more processors represented by processor 133 and various circuits of memory represented by memory 131 are linked together. The bus architecture can also link various other circuits such as peripheral devices, voltage regulators, and power management circuits together, which are all well known in the art, so they are not further described herein. The bus interface provides an interface. The transceiver 132 can be a plurality of components, that is, including a transmitter and a receiver, providing a unit for communicating with various other devices on a transmission medium, and these transmission media include transmission media such as wireless channels, wired channels, and optical cables. The processor 133 is responsible for managing the bus architecture and general processing, and the memory 131 can store data used by the processor 133 when performing operations.

The processor 133 may be a CPU, an ASIC, an FPGA or a CPLD, and the processor may also adopt a multi-core architecture.

In the embodiment of the present disclosure, the network corresponding to the NAS information is determined according to the first information. The method comprises: when the first request is a session establishment request, determining, according to the network node identifier and the terminal identifier of the terminal, a network node corresponding to the NAS information as the session establishment request information; and sending the NAS information to the network function device of the network node comprises: sending the NAS information to the session management function device of the network node.

Among them, determining the network node corresponding to the NAS information according to the first information includes: when the first request is a service request for activating at least one session, determining the network node corresponding to the NAS information as service request information according to the session identifier; sending the NAS information to the network function device of the network node includes: sending the NAS information to the access mobility management function device of the network node; wherein the NAS information carries third information, and the third information includes: a session identifier and a terminal identifier of the terminal.

In the embodiment of the present disclosure, the determining, according to the first information, the network node corresponding to the NAS information includes: when the first request is a service request for activating at least one session, determining, according to the network node identifier and the session identifier, the network node corresponding to the NAS information as the service request information; the sending of the NAS information to the network function device of the network node includes: sending the NAS information to the session management function device of the network node; wherein, The NAS information carries fourth information, and the fourth information includes: a session identifier and a terminal identifier of the terminal.

Among them, when the first request is a session establishment request, the first response carries fifth information, and the fifth information includes: a session identifier, a terminal identifier of the terminal, and at least one of NAS information serving as session establishment acceptance information; the operation also includes: after receiving the first response fed back by the network function device of the network node, adding sixth information to the context information of the terminal, and the sixth information includes: a session identifier, and network node information corresponding to the session.

Furthermore, the operation also includes: in a case where the first request is a service request for activating at least one session, after receiving a first response fed back by a network function device of the network node, establishing a wireless resource control RRC connection with the terminal according to the first response, and generating context information of the terminal; wherein the context information includes: a session identifier, a terminal identifier of the terminal, and network node information corresponding to the session.

It should be noted here that the above-mentioned device provided in the embodiment of the present disclosure can implement all the method steps implemented in the above-mentioned wireless access network device side method embodiment, and can achieve the same technical effect. The parts and beneficial effects that are the same as those in the method embodiment will not be described in detail here.

The embodiment of the present disclosure further provides an information transmission device, which is applied to a terminal, as shown in FIG14 , and includes:

A first sending unit 141 is configured to send a first request to a wireless access network device;

A first receiving unit 142 is configured to receive a first response fed back by the wireless access network device;

The information transmission device provided by the embodiment of the present disclosure sends a first request to a wireless access network device; receives a first response fed back by the wireless access network device; wherein the first request carries: non-access layer NAS information and first information, and the first information is used to assist the wireless access network device in determining the network node corresponding to the NAS information; it can support the realization that when the terminal is registered with at least one network node, the wireless access network device can still accurately forward the NAS information of the terminal to the corresponding network node to ensure the accurate transmission of the NAS message, which well solves the problem that the information transmission scheme for NAS messages in the prior art cannot be accurately transmitted.

The embodiment of the present disclosure further provides an information transmission device, which is applied to a wireless access network device, as shown in FIG15 , and includes:

The second receiving unit 151 is used to receive a first request sent by a terminal; the first request carries: non-access layer NAS information and first information, and the first information is used to assist the wireless access network device in determining the network node corresponding to the NAS information;

A first determining unit 152, configured to determine a network node corresponding to the NAS information according to the first information;

A second sending unit 153 is configured to send the NAS information to a network function device of the network node;

A third receiving unit 154 is configured to receive a first response fed back by a network function device of the network node;

A third sending unit 155 is configured to send the first response to the terminal;

The information transmission device provided by the embodiment of the present disclosure receives a first request sent by a terminal; the first request carries: non-access layer NAS information and first information, the first information is used to assist the wireless access network device to determine the network node corresponding to the NAS information; according to the first information, the network node corresponding to the NAS information is determined; the NAS information is sent to the network function device of the network node; the first response fed back by the network function device of the network node is received; the first response is sent to the terminal; wherein the network function device is an access mobility management Functional device or session management functional device; it can support the realization that when the terminal is registered to at least one network node, the wireless access network device can still accurately forward the NAS information of the terminal to the corresponding network node to ensure the accurate transmission of the NAS message, which well solves the problem that the information transmission scheme for NAS messages in the prior art cannot be accurately transmitted.

In the embodiment of the present disclosure, the network corresponding to the NAS information is determined according to the first information. The method comprises: determining, when the first request is a session modification request, the network node corresponding to the NAS information according to the session identifier and the NAS information as session modification request information; or determining, when the first request is a session release request, the network node corresponding to the NAS information according to the session identifier and the NAS information as session release request information; sending the NAS information to the network function device of the network node comprises: sending the NAS information to the session management function device of the network node.

Among them, in the case where the first request is a session establishment request, the first response carries fifth information, and the fifth information includes: a session identifier, a terminal identifier of the terminal, and at least one of NAS information serving as session establishment acceptance information; the information transmission device also includes: a first processing unit, which is used to add sixth information to the context information of the terminal after receiving the first response fed back by the network function device of the network node, and the sixth information includes: a session identifier, and network node information corresponding to the session.

Furthermore, the information transmission device further includes: a second processing unit, configured to establish a radio resource control RRC connection with the terminal according to the first response after receiving a first response fed back by the network function device of the network node when the first request is a service request for activating at least one session, and generate context information of the terminal; wherein the The context information includes: a session identifier, a terminal identifier of the terminal, and network node information corresponding to the session.

It should be noted that the division of units in the embodiments of the present disclosure is schematic and is only a logical function division. There may be other division methods in actual implementation. In addition, each functional unit in each embodiment of the present disclosure may be integrated into a processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit. The above-mentioned integrated unit may be implemented in the form of hardware or in the form of software functional units.

If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a processor-readable storage medium. Based on this understanding, the technical solution of the present disclosure is essentially or the part that contributes to the prior art or all or part of the technical solution can be embodied in the form of a software product. The computer software product is stored in a storage medium, including several instructions to enable a computer device (which can be a personal computer, server, or network device, etc.) or a processor (processor) to perform all or part of the steps of the method described in each embodiment of the present disclosure. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (ROM), random access memory (RAM), disk or optical disk and other media that can store program code.

The processor-readable storage medium may be any available medium or data storage device that can be accessed by the processor, including but not limited to magnetic storage (e.g., floppy disk, hard disk, magnetic tape, magneto-optical (MO)), etc.), optical storage (e.g., compact disk (CD), digital video disc (DVD), Blu-ray Disc (BD), high-definition universal disc (HVD), etc.), and semiconductor storage (e.g., electrical programmable read-only memory (EPROM)). EPROM), Electrically Erasable Programmable Read-Only Memory (EEPROM), Non-volatile Memory (NAND FLASH), Solid State Hard Disk (SSD), etc.

Among them, the implementation embodiments of the information transmission method on the above-mentioned terminal side or wireless access network device side are all applicable to the embodiments of the processor-readable storage medium, and can also achieve the same technical effect.

Those skilled in the art will appreciate that the embodiments of the present disclosure may be provided as methods, systems, or computer program products. Therefore, the present disclosure may take the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware. Moreover, the present disclosure may take the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage and optical storage, etc.) containing computer-usable program code.

The present disclosure is described with reference to the flowchart and/or block diagram of the method, device (system), and computer program product according to the embodiment of the present disclosure. It should be understood that each process and/or box in the flowchart and/or block diagram, as well as the combination of the process and/or box in the flowchart and/or block diagram can be implemented by computer executable instructions. These computer executable instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor or other programmable data processing device to produce a machine, so that the instructions executed by the processor of the computer or other programmable data processing device produce a device for implementing the functions specified in one process or multiple processes in the flowchart and/or one box or multiple boxes in the block diagram.

These processor-executable instructions may also be stored in a processor-readable memory that can direct a computer or other programmable data processing device to operate in a specific manner, so that the instructions stored in the processor-readable memory produce a product including an instruction device that implements the functions specified in one or more processes in the flowchart and/or one or more boxes in the block diagram.

These processor-executable instructions may also be loaded onto a computer or other programmable data processing device so that a series of operational steps are executed on the computer or other programmable device to produce a computer-implemented process, whereby the instructions executed on the computer or other programmable device provide steps for implementing the functions specified in one or more flows in the flowchart and/or one or more blocks in the block diagram.

Obviously, those skilled in the art can make various changes and modifications to the present disclosure without departing from the spirit and scope of the present disclosure. Thus, if these modifications and variations of the present disclosure fall within the scope of the claims of the present disclosure and their equivalents, the present disclosure is also intended to include these modifications and variations.

Claims

An information transmission method, applied to a terminal, comprising:

Sending a first request to a wireless access network device;

receiving a first response fed back by the wireless access network device;

The first request carries: non-access layer NAS information and first information, and the first information is used to assist the wireless access network device in determining the network node corresponding to the NAS information.
The information transmission method according to claim 1, wherein the first information includes at least one of the following:

Network node identification;

Session ID.
The information transmission method according to claim 1 or 2, wherein, in the case where the first request is a session establishment request, the first information includes: a network node identifier;

In the case where the first request is a session modification request or a session release request, the first information includes: a session identifier;

In the case that the first request is a service request for activating at least one session, the first information includes: a session identifier; or the first information includes: a network node identifier and a session identifier.
An information transmission method, applied to a wireless access network device, comprising:

receiving a first request sent by a terminal; the first request carries: non-access layer NAS information and first information, the first information being used to assist the wireless access network device in determining a network node corresponding to the NAS information;

Determine, according to the first information, a network node corresponding to the NAS information;

Sending the NAS information to a network function device of the network node;

Receiving a first response fed back by a network function device of the network node;

sending the first response to the terminal;

The network function device is an access mobility management function device or a session management function device.
The information transmission method according to claim 4, wherein the first information includes the following At least one of the following:

Network node identification;

Session ID.
The information transmission method according to claim 4 or 5, wherein, in the case where the first request is a session establishment request, the first information includes: a network node identifier;

In the case where the first request is a session modification request or a session release request, the first information includes: a session identifier;

In the case that the first request is a service request for activating at least one session, the first information includes: a session identifier; or the first information includes: a network node identifier and a session identifier.
The information transmission method according to claim 6, wherein determining the network node corresponding to the NAS information according to the first information comprises:

In a case where the first request is a session establishment request, determining, according to the network node identifier, a network node corresponding to the NAS information serving as the session establishment request information;

The sending the NAS information to the network function device of the network node includes:

Sending the NAS information to an access mobility management function device of the network node;

The NAS information carries second information, and the second information includes: location information and a session identifier of the terminal.
The information transmission method according to claim 6, wherein determining the network node corresponding to the NAS information according to the first information comprises:

In a case where the first request is a session establishment request, determining, according to the network node identifier and the terminal identifier of the terminal, a network node corresponding to the NAS information serving as the session establishment request information;

The sending the NAS information to the network function device of the network node includes:

The NAS information is sent to a session management function device of the network node.
The information transmission method according to claim 6, wherein determining the network node corresponding to the NAS information according to the first information comprises:

In a case where the first request is a session modification request, determining, according to the session identifier, a network node corresponding to the NAS information serving as session modification request information;

Alternatively, when the first request is a session release request, determining, according to the session identifier, a network node corresponding to the NAS information serving as the session release request information;

The sending the NAS information to the network function device of the network node includes:

The NAS information is sent to an access mobility management function device of the network node.
The information transmission method according to claim 6, wherein determining the network node corresponding to the NAS information according to the first information comprises:

In a case where the first request is a session modification request, determining, according to the session identifier and the NAS information serving as session modification request information, a network node corresponding to the NAS information;

Alternatively, when the first request is a session release request, determining the network node corresponding to the NAS information according to the session identifier and the NAS information serving as the session release request information;

The sending the NAS information to the network function device of the network node includes:

The NAS information is sent to a session management function device of the network node.
The information transmission method according to claim 6, wherein determining the network node corresponding to the NAS information according to the first information comprises:

In a case where the first request is a service request for activating at least one session, determining, according to the session identifier, a network node corresponding to the NAS information serving as the service request information;

The sending the NAS information to the network function device of the network node includes:

Sending the NAS information to an access mobility management function device of the network node;

The NAS information carries third information, and the third information includes: a session identifier and a terminal identifier of the terminal.
The information transmission method according to claim 6, wherein determining the network node corresponding to the NAS information according to the first information comprises:

In a case where the first request is a service request for activating at least one session, determining, according to the network node identifier and the session identifier, a network node corresponding to the NAS information serving as the service request information;

The sending the NAS information to the network function device of the network node includes:

Sending the NAS information to a session management function device of the network node;

The NAS information carries fourth information, and the fourth information includes: a session identifier and a terminal identifier of the terminal.
The information transmission method according to claim 4, wherein, in the case where the first request is a session establishment request, the first response carries fifth information, the fifth information comprising: at least one of a session identifier, a terminal identifier of the terminal, and NAS information as session establishment acceptance information;

After receiving a first response fed back by the network function device of the network node, the method further includes:

Sixth information is added to the context information of the terminal, where the sixth information includes: a session identifier and network node information corresponding to the session.
The information transmission method according to claim 4, wherein, in the case where the first request is a service request for activating at least one session, after receiving a first response fed back by the network function device of the network node, it further comprises:

According to the first response, establish a radio resource control RRC connection with the terminal, and generate context information of the terminal;

The context information includes: a session identifier, a terminal identifier of the terminal, and network node information corresponding to the session.
An information transmission device, the information transmission device is a terminal, and the information transmission device includes a memory, a transceiver, and a processor:

A memory for storing a computer program; a transceiver for sending and receiving data under the control of the processor; and a processor for reading the computer program in the memory and executing the operation of the information transmission method as described in any one of claims 1 to 3.
An information transmission device, the information transmission device is a wireless access network device, the information transmission device comprises a memory, a transceiver, and a processor:

A memory for storing a computer program; a transceiver for sending and receiving data under the control of the processor; a processor for reading the computer program in the memory and executing the operation of the information transmission method as described in any one of claims 4 to 14.
An information transmission device, applied to a terminal, comprising:

A first sending unit, configured to send a first request to a wireless access network device;

A first receiving unit, configured to receive a first response fed back by the wireless access network device;

The first request carries: non-access layer NAS information and first information, and the first information is used to assist the wireless access network device in determining the network node corresponding to the NAS information.
The information transmission device according to claim 17, wherein the first information includes at least one of the following:

Network node identification;

Session ID.
The information transmission device according to claim 17 or 18, wherein, in the case where the first request is a session establishment request, the first information includes: a network node identifier;

In the case where the first request is a session modification request or a session release request, the first information includes: a session identifier;

In the case that the first request is a service request for activating at least one session, the first information includes: a session identifier; or the first information includes: a network node identifier and a session identifier.
An information transmission device, applied to a wireless access network device, comprising:

A second receiving unit is configured to receive a first request sent by a terminal; the first request carries: non-access layer NAS information and first information, the first information being used to assist the wireless access network device in determining a network node corresponding to the NAS information;

A first determining unit, configured to determine a network node corresponding to the NAS information according to the first information;

A second sending unit, configured to send the NAS information to a network function device of the network node;

A third receiving unit, configured to receive a first response fed back by the network function device of the network node;

A third sending unit, configured to send the first response to the terminal;

The network function device is an access mobility management function device or a session management function device.
The information transmission device according to claim 20, wherein the first information includes at least one of the following:

Network node identification;

Session ID.
The information transmission device according to claim 20 or 21, wherein, in the case where the first request is a session establishment request, the first information includes: a network node identifier;

In the case where the first request is a session modification request or a session release request, the first information includes: a session identifier;

In the case that the first request is a service request for activating at least one session, the first information includes: a session identifier; or the first information includes: a network node identifier and a session identifier.
The information transmission device according to claim 22, wherein the first determining unit is specifically configured to:

In a case where the first request is a session establishment request, determining, according to the network node identifier, a network node corresponding to the NAS information serving as the session establishment request information;

The second sending unit is specifically configured to:

Sending the NAS information to an access mobility management function device of the network node;

The NAS information carries second information, and the second information includes: location information and a session identifier of the terminal.
The information transmission device according to claim 22, wherein the first determining unit is specifically configured to:

In a case where the first request is a session establishment request, determining, according to the network node identifier and the terminal identifier of the terminal, a network node corresponding to the NAS information serving as the session establishment request information;

The second sending unit is specifically configured to:

The NAS information is sent to a session management function device of the network node.
The information transmission device according to claim 22, wherein the first determining unit is specifically configured to:

In a case where the first request is a session modification request, determining, according to the session identifier, a network node corresponding to the NAS information serving as session modification request information;

Alternatively, when the first request is a session release request, determining, according to the session identifier, a network node corresponding to the NAS information serving as the session release request information;

The second sending unit is specifically configured to:

The NAS information is sent to an access mobility management function device of the network node.
The information transmission device according to claim 22, wherein the first determining unit, Specifically used for:

In a case where the first request is a session modification request, determining, according to the session identifier and the NAS information serving as session modification request information, a network node corresponding to the NAS information;

Alternatively, when the first request is a session release request, determining the network node corresponding to the NAS information according to the session identifier and the NAS information serving as the session release request information;

The second sending unit is specifically configured to:

The NAS information is sent to a session management function device of the network node.
The information transmission device according to claim 22, wherein the first determining unit is specifically configured to:

In a case where the first request is a service request for activating at least one session, determining, according to the session identifier, a network node corresponding to the NAS information serving as the service request information;

The second sending unit is specifically configured to:

Sending the NAS information to an access mobility management function device of the network node;

The NAS information carries third information, and the third information includes: a session identifier and a terminal identifier of the terminal.
The information transmission device according to claim 22, wherein the first determining unit is specifically configured to:

In a case where the first request is a service request for activating at least one session, determining, according to the network node identifier and the session identifier, a network node corresponding to the NAS information serving as the service request information;

The second sending unit is specifically configured to:

Sending the NAS information to a session management function device of the network node;

The NAS information carries fourth information, and the fourth information includes: a session identifier and a terminal identifier of the terminal.
The information transmission device according to claim 20, wherein, in the case where the first request is a session establishment request, the first response carries fifth information, the fifth information comprising: at least one of a session identifier, a terminal identifier of the terminal, and NAS information as session establishment acceptance information;

The information transmission device also includes:

The first processing unit is configured to add sixth information to the context information of the terminal after receiving a first response fed back by the network function device of the network node, wherein the sixth information includes: a session identifier and network node information corresponding to the session.
The information transmission device according to claim 20, wherein the information transmission device further comprises:

a second processing unit, configured to, when the first request is a service request for activating at least one session, establish a radio resource control RRC connection with the terminal according to the first response after receiving a first response fed back by the network function device of the network node, and generate context information of the terminal;

The context information includes: a session identifier, a terminal identifier of the terminal, and network node information corresponding to the session.
A processor-readable storage medium storing a computer program, wherein the computer program is used to cause the processor to execute the method according to any one of claims 1 to 14.