WO2018112931A1

WO2018112931A1 - Signaling redirection method and related device

Info

Publication number: WO2018112931A1
Application number: PCT/CN2016/111834
Authority: WO
Inventors: 乔晓强; 李岩
Original assignee: 华为技术有限公司
Priority date: 2016-12-23
Filing date: 2016-12-23
Publication date: 2018-06-28

Abstract

Disclosed in the embodiments of the present application are a signaling redirection method and related device, the method comprising the following steps: a first common control network function (CCNF) receives a signaling service request message of a user equipment from a radio access device; the first CCNF determines a second CCNF which provides service to the user equipment according to the signaling service request message; the first CCNF sends the signaling service request message to the second CCNF; the first CCNF receives a first signaling service response message from the second CCNF, the first signaling service response message carrying a temporary identifier assigned by the second CCNF to the user equipment; and the first CCNF sends the first signaling service response message and a context processing message to the radio access device, or the first CCNF sends a second signaling service response message to the radio access device according to the first signaling service response message. The present application may solve the problem wherein a radio access device has no way of determining a CCNF for providing service to a user equipment when the user equipment is in an active state.

Description

Signaling redirection method and related equipment

Technical field

The present application relates to the field of communications technologies, and in particular, to a signaling redirection method and related devices.

Background technique

Network slicing technology enables the division of one physical network into multiple virtual networks. A virtual network is treated as a “network slice”. Each network slice is independent of each other. Each network slice is customized and managed according to the needs of the service scenario. Among them, network functions may include coverage area, duration, capacity, speed, delay, reliability, security, and the like. Therefore, a network slice can be thought of as an instantiated core network architecture. Current network slice types include mobile broadband, multimedia, Massive Machine Type Communication, and Critical Machine Type Communication. Thereby, multiple services are maintained while maintaining the independence of the service while sharing the basic equipment of one physical network.

User equipment (UE) can access a single network slice, or can access multiple network slices to use different services provided by multiple network slices. For the sharing of some control plane functions between instances of multiple network slices, other control plane functions and user plane functions belong to the scene of the network slice instance, and the shared partial control plane function is shared by the control plane network element function device (common Control network function (CCNF) implementation, the control plane function of the instance of the network slice itself is implemented by the control plane network element in the network slice. In the case that the UE initially attaches to the network but the wireless access device currently accessed by the UE cannot select the CCNF serving the UE, and the CCNF that the UE is in the active state but the UE currently accesses the wireless connection device cannot learn to provide the UE. In the case of the existing scheme, the dedicated shared control plane network element (dedicated CCNF) is selected for the UE by using the default shared control plane network element (default CCNF). The non-access stratum (NAS) signaling of the UE needs to be forwarded through the default CCNF, including sending the NAS signaling sent by the dedicated CCNF to the UE through the default CCNF and the wireless access device, and sending the UE. The NAS signaling is sent to the dedicated CCNF through the default CCNF and the wireless access device, which increases the burden of the default CCNF and reduces the transmission efficiency of the NAS signaling.

Summary of the invention

The embodiment of the present application provides a signaling redirection method and related device, which can be solved in the UE In the case of an active state, the wireless access device cannot determine the problem of the CCNF serving the UE.

In a first aspect, the embodiment of the present application provides a signaling redirection method, including:

The first control plane network element function device CCNF receives a signaling service request message of the user equipment from the wireless access device;

Determining, by the first CCNF, the second CCNF serving the user equipment according to the signaling service request message;

Sending, by the first CCNF, the signaling service request message to the second CCNF;

Receiving, by the first CCNF, a first signaling service response message from the second CCNF, where the first signaling service response message carries a temporary identifier that is allocated by the second CCNF to the user equipment;

Sending, by the first CCNF, the first signaling service response message and the context processing message to the wireless access device, or the first CCNF according to the first signaling service response message, to the wireless connection The ingress device sends a second signaling service response message;

The second signaling service response message carries the temporary identifier and indication information used to indicate that the user equipment re-establishes an RRC connection, and the context processing message or the second signaling service response message is used to determine A second CCNF that provides service to the user equipment.

In the first aspect of the embodiment of the present application, the method for sending the context processing message or the second signaling service response message by the first CCNF enables the wireless access device to determine the CCNF serving the UE, the wireless access device, and the CCNF. Establishing a communication connection for providing services to the UE realizes direct communication between the wireless access device and the CCNF, reduces the burden of the relay CCNF, and improves the transmission efficiency of the NAS signaling.

In an optional embodiment, the signaling service request message is an attach request message; or the signaling service request message is a location update request message, and the location update request message may be a tracking area update (Tracking Area) Update, TAU) request message.

In an optional embodiment, if the signaling service request message is an attach request message, the first signaling service response message is an attach response message;

And if the signaling service request message is a location update request message, the first signaling service response message is a location update response message.

In an optional embodiment, the context processing message is a context establishment request or a context update request received from the second CCNF, and the context processing message carries the second CCNF Logo.

In an optional solution, if the signaling service request message is an attach request message, the second CCNF sends a context establishment request to the first CCNF. Alternatively, if the signaling service request message is a location update request message, the second CCNF sends a context update request to the first CCNF.

In an optional embodiment, the context establishment request or the context update request further carries a target connection identifier, where the target connection identifier is allocated by the second CCNF to the user equipment, the target The connection identifier is used to indicate a connection between the second CCNF and the wireless access device for transmitting signaling of the user equipment.

In an optional embodiment, if the first signaling service response message further carries an indication message for instructing the user equipment to re-establish an RRC connection, the first CCNF sends the first signaling The service response message is determined to be the second signaling service response message;

If the first signaling service response message does not carry the indication information for instructing the user equipment to re-establish an RRC connection, the first CCNF generates the indication information, and according to the temporary identifier and the indication information Generating the second signaling service response message.

In this way, the user equipment can be triggered to re-establish the RRC connection by using the carried indication message, thereby implementing the notification of the temporary identifier of the user equipment to the wireless access device, so that the wireless access device can obtain the temporary identifier according to the temporary identifier. The target network element identifier of the CCNF serving the user equipment.

In an optional embodiment, the context processing message is a context release command;

The method further includes:

Receiving, by the first CCNF, a signaling service completion message of the user equipment from the wireless access device;

In an optional solution, the first CCNF sends the signaling service completion message to the second CCNF, and if the second CCNF receives the signaling service completion message of the user equipment, generate And releasing, by the user equipment, a context release command, and sending a context release command of the user equipment to the first CCNF, and correspondingly, the first CCNF receives a context release command and sends the context release command to the wireless access device.

In another optional solution, if the first CCNF receives the signaling service completion message of the user equipment, the first CCNF generates a context release command of the user equipment, and sends the The wireless access device sends a context release command of the user equipment.

In an optional embodiment, the method further includes:

The first CCNF sends a notification message that the context of the user equipment has been released to the second CCNF.

In an optional embodiment, the specified field of the temporary identifier is used to indicate the target network element identifier.

In an optional embodiment, before the sending, by the first CCNF, the signaling service request message to the second CCNF, the method further includes:

Obtaining, by the first CCNF, a security context of the user equipment, and adding the security context to the signaling service request message;

Sending, by the first CCNF, a signaling service request message to the second CCNF, including:

The first CCNF sends a signaling service request message after the security context is added to the second CCNF.

After the receiving the signaling service request message, the second CCNF can directly determine and store the security context of the user equipment according to the signaling service request message, without performing security on the user equipment. Related processes save processing time.

A second aspect of the present disclosure provides a signaling redirection method, including:

Receiving, by the second CCNF, a signaling service request message of the user equipment from the first CCNF;

After receiving the signaling service request message, the second CCNF allocates a temporary identifier to the user equipment;

The second CCNF sends a first signaling service response message to the first CCNF, where the first signaling service response message carries the temporary identifier.

In the first aspect of the embodiment of the present application, the signaling service request message is processed by the first CCNF, and the temporary identifier is allocated to the user equipment, and the first signaling service response message carrying the temporary identifier is sent to the first CCNF. The processing of the first CCNF enables the wireless access device to determine the CCNF serving the UE, and the wireless access device establishes a communication connection with the CCNF to provide the service for the UE, and implements direct communication between the wireless access device and the CCNF. It reduces the burden of relaying CCNF and improves the transmission efficiency of NAS signaling.

In an optional embodiment, the signaling service request message is an attach request message; or, The signaling service request message is a location update request message, and the location update request message may be a TAU request message.

In an optional embodiment, the method further includes:

The second CCNF sends a context establishment request or a context update request of the user equipment to the first CCNF, where the context establishment request or the context update request carries an identifier of the second CCNF.

In an optional embodiment, the first signaling service response message further carries an indication message for instructing the user equipment to re-establish an RRC connection.

In an optional embodiment, the method further includes:

Receiving, by the second CCNF, a signaling service completion message of the user equipment from the first CCNF;

The second CCNF sends a context release command of the user equipment to the first CCNF.

In an optional embodiment, the method further includes:

The second CCNF receives a notification message that the context of the user equipment sent by the first CCNF has been released.

In an optional embodiment, the signaling service request message carries security of the user equipment. Context.

The third aspect provides a signaling redirection method for the embodiment of the present application, including:

The wireless access device receives a context processing message of the user equipment from the first CCNF;

The wireless access device determines, according to the context processing message, a second CCNF that provides a service for the user equipment.

In the third aspect of the embodiment of the present application, the CCNF that provides the service for the UE is determined by receiving the context processing message of the first CCNF, and the communication connection for providing the service to the UE is established with the CCNF, and the wireless access device and the The direct communication of CCNF reduces the burden of relaying CCNF and improves the transmission efficiency of NAS signaling.

In an optional embodiment, the context processing message carries an identifier of a second CCNF that provides service for the user equipment;

Determining, by the wireless access device, the second CCNF that provides the service for the user equipment according to the context processing message, including:

The wireless access device determines the CCNF indicated by the identifier of the second CCNF as the second CCNF.

In an optional embodiment, the context processing message further carries a target connection identifier, where the target connection identifier is used to indicate that the user equipment is used between the wireless access device and the second CCNF. Signaling connection.

A fourth aspect of the present disclosure provides a signaling redirection method, including:

The user equipment receives a second signaling service response message from the wireless access device, where the second signaling service response message carries indication information and the temporary identifier for instructing the user equipment to re-establish an RRC connection;

The user equipment sends an RRC connection reestablishment request to the radio access device, where the RRC connection reestablishment request carries the temporary identifier.

In the fourth aspect of the embodiments of the present application, after receiving the second signaling service response message, the user equipment sends an RRC connection reestablishment request that carries the temporary identifier to the radio access device, so that the radio access device reestablishes the request according to the RRC connection. Determining the CCNF for serving the UE, and establishing a communication connection with the CCNF to provide services for the UE, realizing direct communication between the wireless access device and the CCNF, reducing the burden of the relay CCNF, and improving the transmission efficiency of the NAS signaling .

In an optional embodiment, the specified field of the temporary identifier is used to indicate an identifier of a second CCNF that provides service for the user equipment.

In a fifth aspect, the embodiment of the present application provides a first CCNF, including:

a receiving module, configured to receive, by the wireless access device, a signaling service request message of the user equipment;

a determining module, configured to determine, according to the signaling service request message, a second CCNF that provides a service for the user equipment;

a sending module, configured to send the signaling service request message to the second CCNF;

The receiving module is further configured to receive a first signaling service response message from the second CCNF, where the first signaling service response message carries a temporary identifier that is allocated by the second CCNF to the user equipment;

The sending module is further configured to send the first signaling service response message and the context processing message to the wireless access device, or the sending module is further configured to: according to the first signaling service response message Sending a second signaling service response message to the wireless access device;

In the fifth aspect of the embodiment of the present application, the method for sending the context processing message or the second signaling service response message by the first CCNF enables the wireless access device to determine the CCNF serving the UE, the wireless access device, and the CCNF. Establishing a communication connection for providing services to the UE realizes direct communication between the wireless access device and the CCNF, reduces the burden of the relay CCNF, and improves the transmission efficiency of the NAS signaling.

In one possible design, the structure of the first CCNF includes a processor and a transceiver for performing the service switching method provided by the second aspect of the present application. Optionally, a memory may be further included, where the memory is used to store application code that supports the first CCNF to execute the above method, and the processor is configured to execute an application stored in the memory.

In a sixth aspect, the embodiment of the present application provides a second CCNF, including:

a receiving module, configured to receive a signaling service request message of the user equipment from the first CCNF;

An allocating module, configured to allocate a temporary identifier to the user equipment after receiving the signaling service request message;

And a sending module, configured to send a first signaling service response message to the first CCNF, where the first signaling service response message carries the temporary identifier.

In the sixth aspect of the embodiment of the present application, the signaling service request message is processed by the first CCNF, and the temporary identifier is allocated to the user equipment, and the first signaling service response message carrying the temporary identifier is sent to the first CCNF. The processing of the first CCNF enables the wireless access device to determine the CCNF serving the UE, and the wireless access device establishes a communication connection with the CCNF to provide the service for the UE, and implements direct communication between the wireless access device and the CCNF. It reduces the burden of relaying CCNF and improves the transmission efficiency of NAS signaling.

In one possible design, the structure of the second CCNF includes a processor and a transceiver for performing the service switching method provided by the second aspect of the present application. Optionally, a memory may be further included, where the memory is used to store application code that supports the second CCNF to execute the above method, and the processor is configured to execute an application stored in the memory.

In a seventh aspect, the embodiment of the present application provides a wireless access device, including:

a receiving module, configured to receive a context processing message of the user equipment from the first CCNF;

And a determining module, configured to determine, according to the context processing message, a second CCNF that provides a service for the user equipment.

In the seventh aspect of the embodiment of the present application, the CCNF that provides the service for the UE is determined by receiving the context processing message of the first CCNF, and the communication connection for providing the service to the UE is established with the CCNF, and the wireless access device and the The direct communication of CCNF reduces the burden of relaying CCNF and improves the transmission efficiency of NAS signaling.

In a possible design, the structure of the wireless access device includes a processor and a transceiver, and the processor is configured to perform the service switching method provided by the second aspect of the present application. Optionally, a memory may be further included, where the memory is used to store application code that supports the wireless access device to perform the above method, and the processor is configured to execute an application stored in the memory.

In an eighth aspect, the embodiment of the present application provides a first CCNF, including:

a receiving module, configured to receive a second signaling service response message from the wireless access device, where the second signaling service response message carries indication information and the temporary identifier that are used to indicate that the user equipment re-establishes an RRC connection ;

a sending module, configured to send an RRC connection reestablishment request to the radio access device, where the RRC The connection reestablishment request carries the temporary identifier.

In the eighth aspect of the embodiments of the present application, after receiving the second signaling service response message, the user equipment sends an RRC connection reestablishment request that carries the temporary identifier to the radio access device, so that the radio access device reestablishes the request according to the RRC connection. Determining the CCNF for serving the UE, and establishing a communication connection with the CCNF to provide services for the UE, realizing direct communication between the wireless access device and the CCNF, reducing the burden of the relay CCNF, and improving the transmission efficiency of the NAS signaling .

In a possible design, the structure of the user equipment includes a processor and a transceiver, and the processor is configured to perform the service switching method provided by the second aspect of the present application. Optionally, a memory may be further included, where the memory is used to store application code that supports the user equipment to perform the above method, and the processor is configured to execute an application stored in the memory.

In a ninth aspect, the embodiment of the present application provides a computer storage medium for storing computer software instructions used by the first CCNF, which includes a program designed to perform the above aspects.

In a tenth aspect, the embodiment of the present application provides a computer storage medium for storing computer software instructions used by the second CCNF, which includes a program designed to perform the above aspects.

In an eleventh aspect, an embodiment of the present application provides a computer storage medium for storing computer software instructions for use in the wireless access device, including a program designed to perform the above aspects.

According to a twelfth aspect, the embodiment of the present application provides a computer storage medium for storing computer software instructions used by the user equipment, which includes a program designed to perform the above aspects.

In the embodiment of the present application, the names of the first CCNF, the second CCNF, the wireless access device, and the user equipment are not limited to the device itself. In actual implementation, the devices may appear under other names. As long as the functions of the respective devices are similar to the present application, they are within the scope of the claims and their equivalents.

In the embodiment of the present application, the problem that the wireless access device cannot determine the CCNF serving the UE is determined, so that the wireless access device can determine the second CCNF that provides the service for the UE, and establish a communication connection with the second CCNF. The direct communication between the wireless access device and the second CCNF is implemented, the burden of the first CCNF is reduced, and the transmission efficiency of the NAS signaling is also improved.

DRAWINGS

FIG. 1 is a schematic diagram of a possible network architecture provided by an embodiment of the present application;

2 is another possible network architecture diagram provided by an embodiment of the present application;

3 is a schematic flowchart of a signaling redirection method provided by an embodiment of the present application;

4 is a schematic flowchart of still another signaling redirection method provided by an embodiment of the present application;

FIG. 5 is a schematic flowchart of still another signaling redirection method according to an embodiment of the present application;

FIG. 6 is a schematic diagram of a modularity of a first CCNF according to an embodiment of the present application; FIG.

FIG. 7 is a schematic diagram of another first CCNF provided by an embodiment of the present application;

FIG. 8 is a schematic structural diagram of a first CCNF according to an embodiment of the present disclosure;

9 is a schematic diagram of a modularization of a second CCNF according to an embodiment of the present application;

FIG. 10 is a schematic structural diagram of a second CCNF according to an embodiment of the present disclosure;

11 is a schematic diagram of a modularization of a wireless access device according to an embodiment of the present application;

FIG. 12 is a schematic structural diagram of a wireless access device according to an embodiment of the present disclosure;

FIG. 13 is a schematic diagram of a modularization of a user equipment according to an embodiment of the present disclosure;

FIG. 14 is a schematic structural diagram of a user equipment according to an embodiment of the present application.

detailed description

In order to facilitate the understanding of the present application, a possible network architecture diagram applicable to the embodiments of the present application is first described below. The connection relationship between the UE and the radio access network (RAN) and the core network is as shown in FIG. 1 in a scenario including multiple network slice types. 1 includes a UE, a radio access device, a default shared control plane network element (Default CCNF), a dedicated shared control plane network element (Dedicated CCNF), and a specific control plane network element 1 of the network slice type one (Specific Control Plane) Functions, specific control plane network element 2 of instance 2 of network slice type 2, specific user plane element 1 of instance 1 of network slice type one, and specific user plane of instance 2 of network slice type 2 Network element 2.

The network slice type 1 or the network slice type 2 may be any one of mobile broadband, multimedia, Massive Machine Type Communication, and Critical Machine Type Communication. If the UE needs network slice type 1 and/or network slice type 2 to provide signaling services, the UE may be established with the Dedicated CCNF. Establish a communication connection. One way may be that the UE establishes a communication connection with the Dedicated CCNF directly through the wireless access device. Another way may be that the UE establishes a communication connection with the Dedicated CCNF through the wireless access device, the Default CCNF. Optionally, when the wireless access device is not connected to the Dedicated CCNF, a communication connection can be established with the Dedicated CCNF through the Default CCNF.

Since signaling is divided into NAS signaling and access stratum (AS) signaling. The access layer includes an RRC sublayer of a physical layer (L1), a data link layer (L2), and a network layer (L3). The non-access layer includes a mobility management layer and a connection management layer. The NAS signaling between the UE and the core network is a direct transmission message with respect to the wireless access device, that is, the UE transmits the NAS signaling to the core network through the wireless access device. The RRC message belongs to the AS signaling, and the wireless access device can receive the AS signaling and parse the message content corresponding to the AS signaling.

As shown in FIG. 1 , when the UE is connected to the wireless access device, the wireless access device determines the UE as the UE according to the Temporary ID of the UE or the Network Slice Selection Assistance Information (NSSAI) carried by the UE. Dedicated CCNF for services.

The UE temporary identifier includes the identification information of the Dedicated CCNF. Therefore, the wireless access device may determine a Dedicated CCNF that provides a service for the UE according to the temporary identifier of the UE; or the wireless access device may determine the Dedicated CCNF according to the NSSAI and a pre-configured NSSAI and a network slice management relationship. . In the following three cases, the wireless access device cannot determine or directly obtain a Dedicated CCNF that provides services for the UE:

The first case is that the UE has not attached to the network and the UE does not carry the NSSAI, that is, the UE has not been assigned a temporary identifier, so the radio access device cannot learn the temporary identifier of the UE, and thus cannot determine the Dedicated CCNF serving the UE; The access device is also unable to determine the Dedicated CCNF for the UE based on the NSSAI.

The second case is that since the location of the UE has moved, the connection with the previous wireless access device is disconnected, there is a temporary identity assigned by the previously connected source Dedicated CCNF, and the UE sends the temporary identity to the current wireless access. After the device, the current wireless access device determines the Dedicated CCNF identifier according to the temporary identifier, but since the source Dedicated CCNF corresponding to the determined Dedicated CCNF identifier does not establish a connection with the current wireless access device, the current wireless access device exists. Unable to connect to the source Dedicated CCNF.

The third case is that the wireless access device determines the Dedicated CCNF according to the temporary identifier carried by the UE or the NSSAI, but the wireless access device is caused by some reasons, such as the temporary identifier being invalid. The determined Dedicated CCNF is not a CCNF capable of serving the UE; or the Dedicated CCNF that the wireless access device cannot respond according to the NSSAI match.

In the case that the wireless access device cannot determine the Dedicated CCNF serving the UE, the prior art solution determines a Dedicated CCNF for the UE by using the Default CCNF, and the wireless access is determined by the Dedicated CCNF determined by the Default CCNF. The device does not establish a connection with the Dedicated CCNF. If the UE is always in the connected state, the UE does not send the RRC signaling message to the radio access device. The radio access device cannot obtain the temporary identifier of the UE carried in the RRC signaling message. Or the NSSAI obtains the information of the Dedicated CCNF to establish a connection with the UE, so in the process of transmitting the UE NAS signaling, the radio access device needs to forward the UE-uploaded signaling to the Dedicated CCNF through the Default CCNF, thus augmenting the default CCNF. The burden also reduces the transmission efficiency of signaling. However, in the embodiment of the present application, the problem that the wireless access device cannot determine the CCNF serving the UE can be solved, so that the wireless access device can determine the dedicated CCNF that provides the service for the UE, and establish a service with the dedicated CCNF for the UE. The communication connection realizes direct communication between the wireless access device and the dedicated CCNF, which reduces the burden of the default CCNF and improves the transmission efficiency of signaling.

Next, another possible network architecture diagram applicable to the embodiment of the present application is introduced. In a scenario including multiple network slice types, FIG. 2 includes a UE, a wireless access device, a first shared control plane network element (first CCNF), and a second shared control plane network element (second CCNF). The first CCNF can be connected to two network slice types, and the two network slice types are instance 1 of the network slice type 1 and instance 2 of the network slice type 2; the second CCNF can establish a connection with the three network slice types. The three network slice types are instance 3 of network slice type one, instance 4 of network slice type 2, and instance 5 of network slice type three. The network slice type may be any one of mobile broadband, multimedia, large-scale machine type communication, and key machine type communication, and the network slice type 1 and the network slice type 2 are different. If the UE needs the network slice type 1 and the network slice type 2 to provide the signaling service, the UE may establish a communication connection with the first CCNF or the second CCNF; if the UE needs the network slice type 1, the network slice type 2, and the network slice type 3 For the signaling service, the UE needs to establish a communication connection with the second CCNF.

In a practical application, there is a case where the subscription information of the UE is changed (for example, the UE adds a service of the network slice type), or the load of the multiple CCNFs connected to the wireless access device is unbalanced, etc., Reselect a CCNF for the UE. In the existing technical solution, as shown in Figure 2 As shown in the figure, if the CCNF currently connected by the UE is the first CCNF, if the UE adds the service of the network slice type 3, the CCNF serving the UE is switched from the first CCNF to the second CCNF. However, since the second CCNF is selected and determined by the first CCNF, if the UE is always in the connected state, the UE does not send the RRC signaling message to the wireless access device, and the wireless access device cannot according to the RRC signaling message. The temporary identifier of the UE or the NSSAI carried in the UE determines the CCNF after the handover, so that the wireless access device cannot establish a communication connection with the second CCNF to provide the service for the UE, so the actual forwarding is performed to the wireless access device by using the first CCNF. The two CCNFs are related messages of the signaling service provided by the UE, which undoubtedly increases the burden of the first CCNF and reduces the transmission efficiency of the signaling. However, in the embodiment of the present application, the problem that the wireless access device cannot determine the CCNF serving the UE is solved, so that the wireless access device can determine the CCNF that provides the service for the UE, and establish communication with the CCNF to provide the service for the UE. The connection realizes the direct communication between the wireless access device and the CCNF, reduces the burden of the relay CCNF, and improves the transmission efficiency of the signaling.

Embodiments of the present application can be applied to a system that divides one physical network into multiple network slice types.

In this embodiment of the present application, the UE may include, but is not limited to, a terminal, a mobile station (Mobile Station, MS), or a mobile terminal (Mobile Terminal), etc., and the UE may access the radio access network and one or more core networks. Communicating, for example, the UE may be a mobile phone (or "cellular" phone) or a computer with a mobile terminal, etc., for example, the UE may be a portable, pocket, handheld, computer built-in or in-vehicle mobile device (smart Bracelets, smart watches, smart glasses, etc.).

In the embodiment of the present application, any CCNF may include an access and mobility management function (AMF) device, or an AMF device and other control plane functional devices.

Referring to FIG. 3, a schematic flowchart of a signaling redirection method is provided in the embodiment of the present application. As shown in FIG. 3, the signaling redirection in the embodiment of the present application is performed by a user equipment, a radio access device, and a A CCNF and a second CCNF are jointly completed. For details on the redirection process, please refer to the following details.

101. The user equipment sends a signaling service request message to the wireless access device.

The signaling service request message carries the first identifier of the user equipment, and the first identifier is used to uniquely identify the user equipment, so that the network device can determine the user equipment by using the first identifier.

Optionally, the signaling service request message may be an attach request message, and the user equipment attaches a network by sending an attach request message, and obtains a temporary identifier. Further, the attach request message carries an identifier of the user equipment, for example, an International Mobile Subscriber Identification Number (IMSI).

Alternatively, optionally, the signaling service request message may be a location update request message, and an example of the location update request message may be a TAU request message, and the user equipment updates the location of the user equipment by sending a TAU request message. Information and get a temporary identification. Further, the TAU request message carries a temporary identifier allocated by the CCNF that the user equipment provides for the user equipment before sending the location update request.

For example, the temporary identifier involved in the embodiment of the present application may be a Globally Unique Temporary UE Identity (GUTI), where the GUTI is used in the mobile network, and the private identifier of the user equipment may be avoided from being exposed to the network transmission. The security risks. The temporary identifier is used to uniquely identify a user equipment.

102. The wireless access device sends a signaling service request message to the first CCNF.

The wireless access device forwards the received signaling service request message to the first CCNF.

In an optional solution, if the signaling service request message is an attach request message and the user equipment does not carry the NSSAI, the wireless access device cannot determine the CCNF serving the user equipment according to the first identifier, therefore, After receiving the signaling server request message, the wireless access device sends a signaling service request message to the first CCNF, so that the first CCNF determines a serving CCNF for the user equipment.

In an optional solution, if the signaling service request message is a location update request message, and the location update request message carries the temporary identifier allocated to the user equipment last time, if the temporary identifier is allocated to the user equipment last time The CCNF does not establish a connection with the current wireless access device, and after receiving the signaling server request message, the wireless access device sends a signaling service request message to the first CCNF.

In an optional solution, if the wireless access device determines the CCNF serving the user equipment according to the first identifier or the NSSAI carried by the UE, but for some reasons, for example, the temporary identifier fails, the Dedicated CCNF determined by the wireless access device is determined. CCNF that is not capable of serving the UE; or, if the wireless access device cannot match the CCNF of the response according to the NSSAI, it receives a request from the signaling server. After the message, the wireless access device sends a signaling service request message to the first CCNF.

In this embodiment, the signaling service request message is NAS signaling, so after the wireless access device receives the signaling service request message sent by the user equipment, the signaling service request message is sent. Send to the first CCNF.

103. The first CCNF determines a second CCNF that provides a service for the user equipment according to a signaling service request message of the user equipment received by the wireless access device.

After receiving the signaling service request message, the first CCNF determines the subscription information of the user equipment according to the first identifier carried in the signaling service request message, and selects the second CCNF according to the subscription information.

In an optional solution, the first CCNF may select the second CCNF according to the subscription information of the user equipment, where the first CCNF may determine, according to the subscription information of the user equipment, the network slice selection assistance of the user equipment. The information NSSAI is further selected from a plurality of CCNFs to be able to provide services for the types of services supported by the user equipment. For example, the NSSAI may include a service type or a slice type supported by the UE, and may also include other auxiliary information, such as other auxiliary information, which may be a sliced tenant identifier or a UE's tenant ID (Tenant ID), or a UE's group ID (Group ID). . For example, if the service type or slice type supported by the user equipment includes MTC service/slice and mobile broadband service/slice, the first CCNF selects a network slice and MTC capable of connecting mobile broadband for the user equipment. The second CCNF of the network slice.

Further, after the first CCNF determines the second CCNF for the user equipment, the first CCNF may also determine the identifier of the second CCNF. The identifier of the second CCNF is capable of uniquely identifying the second CCNF.

Optionally, the first CCNF may perform a security authentication process on the user equipment before determining the second CCNF that serves the user equipment, specifically:

The first CCNF performs an authentication process on the user equipment, and checks whether the user equipment is allowed to access the network. If it is determined that the user equipment is allowed to access the network, the first CCNF is determined to determine a second CCNF serving the user equipment; if it is determined that the user equipment does not allow access to the network, the first CCNF is not The user equipment determines the second CCNF, optionally, and sends a reject signaling service request message to the user equipment by using the wireless access device.

104. The first CCNF sends a signaling service request message to the second CCNF.

Wherein after the first CCNF determines the identifier of the second CCNF, the identifier is The indicated second CCNF sends a signaling service request message, so that the second CCNF allocates a temporary identifier to the user equipment.

Optionally, after receiving the signaling service request message, the first CCNF performs a security related process on the user equipment according to the first identifier that is carried. After the execution is complete, the first CCNF acquires a security context of the user equipment, and adds the security context to the signaling service request message. After the receiving the signaling service request message, the second CCNF can directly determine and store the security context of the user equipment according to the signaling service request message, without performing security on the user equipment. Related processes save processing time.

Optionally, the security context includes security capabilities of the user equipment and other security related parameters.

Correspondingly, the second CCNF receives the signaling service request message of the user equipment sent by the first CCNF.

105. After receiving the signaling service request message, the second CCNF allocates a temporary identifier to the user equipment.

Optionally, if the signaling service request message is an attach request message, the second CCNF performs an attach process on the user equipment, and allocates a temporary identifier to the user equipment.

Or, if the signaling service request message is a location update request message, the second CCNF performs location update processing on the user equipment, and allocates a temporary identifier to the user equipment.

Optionally, if the signaling service request message carries the security context of the user equipment, the second CCNF directly stores the user equipment security context, and allocates a temporary identifier to the user equipment. If the signaling service request message does not carry the security context of the user equipment, the second CCNF performs a security related process on the user equipment, and after the execution is completed, allocates a temporary identifier to the user equipment.

106. The second CCNF sends a first signaling service response message to the user equipment.

The first signaling service response message carries the temporary identifier allocated by the second CCNF, and after the second CCNF finishes processing the signaling service request message, the second CCNF is sent to the user. The device sends a first signaling service response message to notify the user equipment of the assigned temporary identity.

Further, the second CCNF forwards the first signaling service response message to the user equipment by using the first CCNF and the wireless access device. The wireless access during its transmission The device receives the first signaling service response message sent by the first CCNF, and the first signaling service response message is forwarded to the user equipment, and correspondingly, the user equipment receives the information sent by the wireless access device The first signaling service response message.

Optionally, if the signaling service request message is an attach request message, the first signaling service response message is an attach response message;

In this embodiment, the first signaling service response message is NAS signaling, so after the first CCNF receives the first signaling service response message, the first CCNF sends the first CCNF to the wireless access device. The first signaling service response message, after the wireless access device receives the first signaling service response message, the wireless access device sends the signaling service request message to the user equipment .

107. The second CCNF sends a context establishment request or a context update request to the first CCNF.

The context establishment request is used to request the wireless access device to establish a context of the user equipment, and the context update request is used to request the wireless access device to update a context of the user equipment.

Optionally, the context establishment request or the context update request carries an identifier of the second CCNF that provides the service for the user equipment.

Further, optionally, the context establishment request or the context update request further carries a target connection identifier, where the target connection identifier is allocated by the second CCNF to the user equipment, and the target connection identifier is used for A connection between the second CCNF and the wireless access device for transmitting signaling of the user equipment is indicated.

108. The first CCNF sends a context establishment request or a context update request to the wireless access device.

The first CCNF will carry the second CCNF if the context setup request or the context update request sent by the received second CCNF carries the identifier of the second CCNF. The identified context establishment request or context update request is forwarded to the wireless access device.

If the context establishment request or the context update request sent by the received second CCNF does not carry the identifier of the second CCNF, the first CCNF may add the first in the context establishment request or the context update request. And identifying, by the second CCNF, a context establishment request or a context update request that carries the identifier of the second CCNF to the wireless access device.

Correspondingly, the wireless access device receives a context establishment request or a context update request sent by the first CCNF.

109. The wireless access device determines, according to the context establishment request or a context update request, a second CCNF that provides a service for the user equipment.

The context establishment request or the context update request carries an identifier of the second CCNF that provides the service for the user equipment, and the wireless access device determines the CCNF indicated by the identifier of the second CCNF to provide a service for the user equipment. The second CCNF. In other words, the wireless access device first determines the identity of a CCNF from the context setup request or the context update request, and then determines the CCNF indicated by the CCNF identifier as the second CCNF serving the user equipment.

Optionally, if the context establishment request or the context update request further carries the target connection identifier, where the wireless access device receives the signaling message of the user equipment, the wireless access device subsequently When the signaling message of the user equipment is sent to the second CCNF, the target connection identifier may be carried, so that the second CCNF may identify that the signaling message is from the user equipment according to the target connection identifier. If the context establishment request or the context update request does not carry the target connection identifier, the wireless access device establishes with the second CCNF to transmit the user in the process of establishing a context or updating a context for the user equipment. a signaling connection of the device, and assigning a target connection identifier. Similarly, when the wireless access device sends the signaling message of the user equipment to the second CCNF, the wireless connection device carries the target connection identifier to enable the second CCNF. The signaling message may be identified from the user equipment based on the target connection identifier.

Further, the specified field of the temporary identifier is used to indicate the identifier of the second CCNF. In the case that the radio access device receives the signaling message carrying the temporary identifier, the radio access device may determine the identifier of the second CCNF by using the specified field of the temporary identifier, and can transmit the signaling message to the second CCNF. The CCNF indicated by the logo.

It should be noted that, in the embodiment of the present application, the first signaling service response message sent by the second CCNF to the first CCNF, and the second CCNF sent to the first CCNF There are two alternative ways to send a request or context update request below.

In an optional sending manner, the second CCNF may send a first signaling service response message and a context establishment request to the first CCNF, or the second CCNF may be the first one. A signaling service reply message and a context update request are sent to the first CCNF. Optionally, the first signaling service response message may be added to the context establishment request or the context update request for sending.

In another optional transmission manner, the second CCNF may separately send a first signaling service response message and a context establishment request or a context update request to the first CCNF, optionally, the first signaling service. The reply message and the context establishment request or the context update request are not in the order of the transmission time.

It should be noted that, in an optional solution, the first CCNF may be a default CCNF, and the second CCNF may be a dedicated CCNF, where the default CCNF may establish communication with multiple dedicated CCNFs, and obtain dedicated CCNF information to select the appropriate dedicated CCNF for the user equipment. The solution of the embodiment of the present application may be applied to a scenario in which a wireless access device receives a signaling service request message sent by a user equipment, and the wireless access device is used in a scenario where the wireless access device cannot determine the dedicated CCNF that serves the user equipment. In the case that the dedicated CCNF serving the user equipment cannot be determined, the wireless access device forwards the signaling service request message to the default CCNF; the default CCNF selects a dedicated CCNF for the user equipment after receiving the signaling service request message; the dedicated CCNF receives After the signaling service request message of the user equipment sent by the default CCNF, the temporary identifier is allocated to the user equipment; the dedicated CCNF sends a first signaling service response message and a context processing message to the default CCNF, where the first signaling service response message carries the temporary identifier. The context processing message carries an identifier of the dedicated CCNF; the default CCNF sends the first signaling service response message to the user equipment through the wireless access device; the default CCNF sends a context processing message to the wireless access device, and the wireless access device processes the message according to the context. The identifier carried in the identification determines the user equipment The second CCNF services. The context processing message is a context establishment request or a context update request. In the case that the user equipment sends a signaling message carrying the temporary identifier to the wireless access device, the wireless access device may determine the identifier of the second CCNF by using the specified field of the temporary identifier, and can transmit the signaling message to the second CCNF. Identify the indicated second CCNF. In this way, the wireless access device can determine a dedicated CCNF that provides services for the UE, and establish a communication connection with the dedicated CCNF to provide services for the UE, thereby implementing direct communication between the wireless access device and the dedicated CCNF, thereby reducing the burden of the default CCNF. Also improved signaling Transmission efficiency.

In another optional solution, the first CCNF is a CCNF that currently provides a service for the user equipment, and the solution of the embodiment of the present application may be applied to the network for reselecting CCNF or other due to load balancing or UE subscription change. In the scenario that the user equipment needs to switch the CCNF, the first CCNF determines, by using the signaling service request message of the user equipment that is received by the wireless access device, the second CCNF that provides the service for the user equipment; A CCNF sends a signaling service request message to the second CCNF; the second CCNF receives a signaling service request message of the user equipment sent by the first CCNF, and the second CCNF processes the signaling service request message to allocate a temporary to the user equipment. The first CCNF sends a first signaling service response message and a context processing message to the first CCNF, where the first signaling service response message carries a temporary identifier, the context processing message carries the identifier of the second CCNF, and the first CCNF passes the wireless access The device sends a first signaling service response message to the user equipment, and the first CCNF sends a context processing message to the wireless access device, and the wireless access Determining a second CCNF Preparation serving the user equipment according to the context identifier carried in the message processing. The context processing message is a context establishment request or a context update request. In the case that the user equipment sends a signaling message carrying the temporary identifier to the wireless access device, the wireless access device may determine the identifier of the second CCNF by using the specified field of the temporary identifier, and can transmit the signaling message to the second CCNF. Identify the indicated second CCNF. The second CCNF is the CCNF that provides services for the user equipment after the handover. In this way, the wireless access device can determine the CCNF that provides the service for the UE, and establish a communication connection with the CCNF to provide the service for the UE, realize the direct communication between the wireless access device and the CCNF, reduce the burden of the transit CCNF, and improve the load. Signalling transmission efficiency.

Referring to FIG. 4, a schematic flowchart of another signaling redirection method is provided in the embodiment of the present application. As shown in FIG. 4, the signaling redirection in the embodiment of the present application is performed by a user equipment, a radio access device, The first CCNF and the second CCNF are jointly completed. For details on the redirection process, please refer to the following details.

201. The user equipment sends a signaling service request message to the wireless access device.

202. The wireless access device sends a signaling service request message to the first CCNF.

203. The first CCNF determines, according to a signaling service request message of the user equipment that is received by the wireless access device, a second CCNF that provides a service for the user equipment.

204. The first CCNF sends a signaling service request message to the second CCNF.

205. The second CCNF processes the signaling service request message, and allocates a temporary identifier to the user equipment.

For the steps 201 to 205, reference may be made to the detailed description of the steps 101 to 105 in the embodiment shown in FIG. 3, and details are not described herein again.

206. The second CCNF sends a first signaling service response message to the first CCNF.

Optionally, the first signaling service response message carries indication information used to indicate that the user equipment re-establishes an RRC connection. In this way, the user equipment can be triggered to re-establish an RRC connection by using the carried indication information, thereby implementing the notification of the temporary identifier of the user equipment to the wireless access device, so that the wireless access device can obtain the temporary identifier according to the temporary identifier. The identity of the CCNF that provides service to the user equipment.

Correspondingly, the first CCNF receives the first signaling service response message sent by the second CCNF.

207. The first CCNF determines a second signaling service response message.

After the first CCNF receives the first signaling service response message sent by the second CCNF, the first CCNF detects whether the first signaling service response message is carried to indicate the user. The device re-establishes the indication of the RRC connection.

And if the first signaling service response message carries the indication information, the first CCNF determines the first signaling service response message as a second signaling service response message.

If the indication information is not carried in the first signaling service response message, the first CCNF generates indication information for instructing the user equipment to re-establish an RRC connection, and according to the temporary identifier and the indication The information generates the second signaling service response message.

In other words, the second signaling service response message carries the temporary identifier allocated by the second CCNF for the user equipment and the indication information used to indicate that the user equipment re-establishes the RRC connection. In this way, the user equipment can be triggered to re-establish an RRC connection by using the carried indication information, thereby implementing the notification of the temporary identifier of the user equipment to the wireless access device, so that the wireless access device can obtain the temporary identifier according to the temporary identifier. The identity of the CCNF that provides service to the user equipment.

208. The first CCNF sends a second signaling service response message to the wireless access device.

Correspondingly, the wireless access device receives the second signaling service response message sent by the first CCNF, and forwards the second signaling service response message to the user equipment.

209. The wireless access device sends a second signaling service response message to the user equipment.

In this embodiment, the second signaling service response message is NAS signaling, so after the wireless access device receives the second signaling service response message sent by the user equipment, A second signaling service response message is sent to the user equipment.

210. The user equipment sends an RRC connection establishment request to the wireless access device.

The user equipment is directed to the second signaling service response message carrying the temporary identifier that is allocated by the second CCNF to the user equipment, and the indication information that is used to indicate that the user equipment re-establishes an RRC connection. The radio access device sends an RRC connection reestablishment request, and carries the temporary identifier in the RRC connection reestablishment request, so that the radio access device determines the identifier of the second CCNF according to the specified field of the temporary identifier. And determining the CCNF indicated by the identifier of the second CCNF as the CCNF serving the user equipment.

Correspondingly, the wireless access device receives an RRC connection setup request sent by the user equipment.

211. The wireless access device determines a second CCNF that provides a service for the user equipment, and updates a context of the user equipment.

The radio access device may use the temporary identifier in the case that the radio access device receives the RRC connection setup request that carries the temporary identifier, because the specified field of the temporary identifier is used to indicate the identifier of the second CCNF. The specified field determines the identity of the second CCNF and updates the context of the user device.

It should be noted that, in an optional solution, the first CCNF may be a default CCNF, and the second CCNF may be a dedicated CCNF, where the default CCNF may establish communication with multiple dedicated CCNFs, and obtain a dedicated CCNF. Information to select the appropriate dedicated CCNF for the user equipment. The solution of the embodiment of the present application may be applied to a scenario in which a wireless access device receives a signaling service request message sent by a user equipment, and the wireless access device is used in a scenario where the wireless access device cannot determine the dedicated CCNF that serves the user equipment. In the case that the dedicated CCNF serving the user equipment cannot be determined, the wireless access device forwards the signaling service request message to the default CCNF, and the default CCNF selects a dedicated CCNF for the user equipment after receiving the signaling service request message, and the dedicated CCNF receives the default. Signaling Service Request message of the user equipment sent by the CCNF, dedicated CCNF to the signaling service request message The processing is performed to allocate a temporary identifier to the user equipment; the dedicated CCNF sends a first signaling service response message carrying the temporary identifier to the default CCNF, and the default CCNF determines the temporary identifier and the indication information carrying the user equipment according to the first signaling service response message. a signaling service response message, the indication information is used to indicate that the user equipment re-establishes an RRC connection; the wireless access device sends a second signaling service response message to the user equipment, where the user equipment receives the second signaling service response message After the RRC connection reestablishment request is sent to the radio access device, the RRC connection reestablishment request carries the temporary identifier, and after receiving the RRC connection reestablishment request, the radio access device may determine the dedicated CCNF by using the specified field of the temporary identifier. Identify and be able to transmit signaling messages to the dedicated CCNF indicated by the identity of the dedicated CCNF. In this way, the wireless access device can determine a dedicated CCNF that provides services for the UE, and establish a communication connection with the dedicated CCNF to provide services for the UE, thereby implementing direct communication between the wireless access device and the dedicated CCNF, thereby reducing the burden of the default CCNF. It also improves the transmission efficiency of signaling.

In another optional solution, the first CCNF is a CCNF that currently provides a service for the user equipment, and the solution of the embodiment of the present application may be applied to the network for reselecting CCNF or other due to load balancing or UE subscription change. In the scenario that the user equipment needs to switch the CCNF, the first CCNF determines, by using the signaling service request message of the user equipment that is received by the wireless access device, the second CCNF that provides the service for the user equipment; A CCNF sends a signaling service request message to the second CCNF; the second CCNF receives a signaling service request message of the user equipment sent by the first CCNF, and the second CCNF processes the signaling service request message to allocate a temporary to the user equipment. The second CCNF sends a first signaling service response message carrying the temporary identifier to the first CCNF, and the first CCNF determines, according to the first signaling service response message, a second signaling service response that carries the temporary identifier of the user equipment and the indication information. a message indicating that the user equipment re-establishes an RRC connection; the wireless access device sends a second signaling service response message to the user equipment, After receiving the second signaling service response message, the user equipment sends an RRC connection reestablishment request to the radio access device, where the RRC connection reestablishment request carries the temporary identifier, and the radio access device receives the RRC connection reestablishment After the request, the identifier of the second CCNF may be determined by the specified field of the temporary identifier, and the signaling message may be transmitted to the second CCNF indicated by the identifier of the second CCNF. The second CCNF is the CCNF that provides services for the user equipment after the handover. In this way, the wireless access device can determine the CCNF that provides the service for the UE, and establish a communication connection with the CCNF to provide the service for the UE, realize the direct communication between the wireless access device and the CCNF, reduce the burden of the transit CCNF, and improve the load. Signaling Transmission efficiency.

FIG. 5 is a schematic flowchart of another signaling redirection method according to an embodiment of the present application. As shown in FIG. 5, the service switching method in the embodiment of the present application includes steps 301 to 312. The signaling redirection in the embodiment of the present application is performed by the user equipment, the wireless access device, the first CCNF, and the second CCNF. For details on the redirection process, please refer to the following details.

301. The user equipment sends a signaling service request message to the wireless access device.

302. The wireless access device sends a signaling service request message to the first CCNF.

303. The first CCNF determines, according to a signaling service request message of the user equipment that is received by the wireless access device, a second CCNF that provides a service for the user equipment.

304. The first CCNF sends a signaling service request message to the second CCNF.

305. The second CCNF processes the signaling service request message, and allocates a temporary identifier to the user equipment.

For the steps 301 to 305, reference may be made to the detailed description of the steps 101 to 105 in the embodiment shown in FIG. 3, and details are not described herein again.

306. The second CCNF sends a first signaling service response message to the user equipment.

Further, the second CCNF forwards the first signaling service response message to the user equipment by using the first CCNF and the wireless access device. In this embodiment, the first signaling service response message is NAS signaling, so after the first CCNF receives the first signaling service response message, the first CCNF sends the first CCNF to the wireless access device. The first signaling service response message, after the wireless access device receives the first signaling service response message, the wireless access device sends the signaling service request message to the user equipment . Correspondingly, the user equipment receives the first signaling service response message sent by the wireless access device.

307. The user equipment sends a signaling service completion message to the first CCNF.

The user equipment forwards a signaling service completion message to the first CCNF by using the wireless access device. Correspondingly, the first CCNF receives the signaling service sent by the user equipment. And notifying the second CCNF of the signaling service completion message.

In the embodiment of the present application, the signaling service completion message is NAS signaling, so after the wireless access device receives the signaling service completion message, the wireless access device sends the information to the first CCNF. The signaling service completion message, after the first CCNF receives the signaling service completion message, the first CCNF sends the signaling service completion message to the second CCNF.

In an optional solution, after the second CCNF receives the signaling service completion message of the user equipment, performing step 308, the second CCNF sends a context release command of the user equipment to the first CCNF. Correspondingly, the first CCNF performs step 309 to send the context release command to the wireless access device. Wherein, the context release command here is generated by the second CCNF.

In another optional solution, if the first CCNF receives the signaling service completion message of the user equipment, the first CCNF performs step 309, and sends a context of the user equipment to the wireless access device. Release the command. Wherein, the context release command here is generated by the first CCNF.

310. The wireless access device sends an RRC release command to the user equipment.

After the wireless access device receives the context release command of the user equipment, the wireless access device deletes the context of the user equipment, and sends an RRC release command to the user equipment.

Correspondingly, the user equipment receives an RRC release command sent by the wireless access device.

311. After the release of the context of the user equipment is complete, the wireless access device sends a context release complete message of the user equipment to the first CCNF.

The wireless access device notifies the first CCNF that the context release of the user equipment has been completed by using a context release completion message.

Correspondingly, the first CCNF receives a context release complete message of the user equipment.

312. The first CCNF sends a context release complete message of the user equipment to the second CCNF.

The first CCNF notifies the second CCNF that the release of the context of the user equipment is completed by a context release completion message.

Further, in a case that the user equipment needs to establish an RRC connection, the user equipment sends the The radio access device sends an RRC connection reestablishment request, where the RRC connection reestablishment request carries the temporary identifier allocated by the second CCNF to the user equipment, so that the radio access device determines the second CCNF according to the temporary identifier. And identifying a second CCNF indicated by the identifier of the second CCNF. The designated field of the temporary identifier is used to indicate the identifier of the second CCNF. In a case that the radio access device receives the RRC connection setup request that carries the temporary identifier, the radio access device may determine the identifier of the second CCNF by using the specified field of the temporary identifier, and establish a context of the user equipment.

It should be noted that, in an optional solution, the first CCNF may be a default CCNF, and the second CCNF may be a dedicated CCNF, where the default CCNF may establish communication with multiple dedicated CCNFs, and obtain a dedicated CCNF. Information to select the appropriate dedicated CCNF for the user equipment. The solution of the embodiment of the present application may be applied to a scenario in which a wireless access device receives a signaling service request message sent by a user equipment, and the wireless access device is used in a scenario where the wireless access device cannot determine the dedicated CCNF that serves the user equipment. In the case that the dedicated CCNF serving the user equipment cannot be determined, the wireless access device forwards the signaling service request message to the default CCNF, and the default CCNF selects a dedicated CCNF for the user equipment after receiving the signaling service request message, and the dedicated CCNF receives the default. The signaling service request message of the user equipment sent by the CCNF, the dedicated CCNF processes the signaling service request message, and allocates a temporary identifier to the user equipment; the dedicated CCNF sends a first signaling service response message carrying the temporary identifier to the default CCNF, the default CCNF Sending a first signaling service response message to the user equipment by using the wireless access device, and receiving a signaling service completion message fed back by the user equipment through the wireless access device, and sending a default CCNF or a dedicated CCNF generation context release command to the wireless connection Into the device to release the context of the user device, wireless access The device sends an RRC release command to the user equipment, where the user equipment sends an RRC connection reestablishment request to the radio access device, where the RRC connection reestablishment request carries the temporary identifier, And causing the wireless access device to determine, according to the temporary identifier, an identifier of the dedicated CCNF and a dedicated CCNF indicated by the identifier of the dedicated CCNF. In this way, the wireless access device can determine a dedicated CCNF that provides services for the UE, and establish a communication connection with the dedicated CCNF to provide services for the UE, thereby implementing direct communication between the wireless access device and the dedicated CCNF, thereby reducing the burden of the default CCNF. It also improves the transmission efficiency of signaling.

In another optional solution, the first CCNF is a CCNF that currently provides a service for the user equipment, and the solution of the embodiment of the present application may be applied to the network for reselecting CCNF or other due to load balancing or UE subscription change. In the scenario where the CCNF needs to be switched for the user equipment, the Determining, by the first CCNF, a second CCNF serving the user equipment by using a signaling service request message of the user equipment received by the wireless access device; the first CCNF sending a signaling service request message to the second CCNF The second CCNF receives the signaling service request message of the user equipment sent by the first CCNF, and the second CCNF processes the signaling service request message to allocate a temporary identifier to the user equipment; the second CCNF sends the temporary identifier to the first CCNF. a first signaling service response message, the first CCNF sends a first signaling service response message to the user equipment by using the wireless access device, and receives a signaling service completion message fed back by the user equipment through the wireless access device, and the first The CCNF or the second CCNF generation context release command is sent to the wireless access device to release the context of the user equipment, and the wireless access device sends an RRC release command to the user equipment, where the user equipment needs to establish an RRC connection, the user equipment The wireless access device sends an RRC connection reestablishment request, where the RRC connection reestablishment request carries the temporary identifier, so that the Determining a second line access apparatus CCNF CCNF second identifier and the second identifier indicating CCNF based on the temporary identity. The second CCNF is the CCNF that provides services for the user equipment after the handover. In this way, the wireless access device can determine the CCNF that provides the service for the UE, and establish a communication connection with the CCNF to provide the service for the UE, realize the direct communication between the wireless access device and the CCNF, reduce the burden of the transit CCNF, and improve the load. Signalling transmission efficiency.

FIG. 6 is a schematic diagram of a modularization of a first CCNF according to an embodiment of the present application. The first CCNF in the embodiment of the present application may be the first CCNF provided by any of the embodiments shown in FIG. 3 to FIG. 4.

As shown in FIG. 6, the first CCNF1 of the embodiment of the present application may include: a receiving module 11, a determining module 12, and a sending module 13.

The receiving module 11 is configured to receive a signaling service request message of the user equipment from the wireless access device;

a determining module 12, configured to determine, according to the signaling service request message received by the receiving module 11, a second CCNF that provides a service for the user equipment;

The sending module 13 is configured to send the signaling service request message to the second CCNF determined by the determining module 12;

The receiving module 11 is further configured to: after the sending module 13 sends the signaling service request message to the second CCNF, receive a first signaling service response message from the second CCNF, where the first The signaling service response message carries the temporary identifier assigned by the second CCNF to the user equipment.

In the first optional solution, the sending module 12 is further configured to be connected to the receiving module 11 After receiving the first signaling service response message, sending the first signaling service response message and the context processing message to the wireless access device, so that the wireless access device sends the user equipment to the user equipment The first signaling service response message is described.

The context processing message is used to determine a second CCNF that provides service for the user equipment. The context processing message is a context setup request or a context update request received from the second CCNF, and the context processing message carries an identifier of the second CCNF.

Optionally, the context establishment request or the context update request further carries a target connection identifier, where the target connection identifier is used to indicate a message between the wireless access device and the second CCNF for transmitting the user equipment The connection of the order.

In the second alternative,

The sending module 13 is further configured to send, according to the first signaling service response message received by the receiving module 11, a second signaling service response message to the wireless access device, where the second The signaling service response message carries indication information indicating that the user equipment re-establishes an RRC connection and the temporary identifier.

The second signaling service response message is used to determine a second CCNF that provides service for the user equipment.

Optionally, the determining module 12 is further configured to: if the first signaling service response message received by the receiving module 11 further carries indication information used to indicate that the user equipment re-establishes a radio resource control RRC connection Determining, by the first signaling service response message, the second signaling service response message;

Alternatively, the first CCNF further includes a first generating module 15: the first generating module 15 is configured to: if the first signaling service response message received by the receiving module 11 is not carried After the indication information indicating that the user equipment re-establishes the RRC connection, the indication information is generated, and the second signaling service response message is generated according to the temporary identifier and the indication information.

For the first option and the second option, you can also optionally add the following options:

Optionally, the specified field of the temporary identifier is used to indicate an identifier of the second CCNF that provides the service for the user equipment.

Optionally, the signaling service request message is an attach request message; or the signaling service request message is a location update request message, and the location update request message may be a TAU request message.

Optionally, the first CCNF1 further includes an obtaining module 14, where the acquiring module 14 is configured to acquire a security context of the user equipment, and add the security context to the signaling service request message.

The sending module 13 is specifically configured to send, after sending the signaling service request message to the second CCNF, a signaling service request message that is sent after the security context is added to the second CCNF.

It should be noted that the first CCNF shown in the embodiment of the present application may be used to perform the action or step of the first CCNF in any of the embodiments shown in FIG. 3 to FIG. For the implementation manner and the technical effects brought about, refer to the detailed description of the corresponding method embodiments, and details are not described herein again.

FIG. 7 is a schematic diagram of another modularity of a first CCNF according to an embodiment of the present application. The first CCNF in the embodiment of the present application may be the first CCNF provided by the embodiment shown in FIG. 5.

As shown in FIG. 7, the first CCNF2 in the embodiment of the present application may include: a receiving module 21, a determining module 22, and a sending module 23.

The receiving module 21 is configured to receive a signaling service request message of the user equipment from the wireless access device;

The determining module 22 is configured to determine, according to the signaling service request message received by the receiving module 21, a second CCNF that provides a service for the user equipment;

The sending module 23 is configured to send the signaling service request message to the second CCNF determined by the determining module 22;

The receiving module 21 is further configured to: after the sending, by the sending module 23, the signaling service request message, receive a first signaling service response message from the second CCNF, where the first signaling service response message carries The second CCNF is a temporary identifier allocated by the user equipment.

The sending module 23 is further configured to send the first signaling service response message and the context processing message to the wireless access device after the receiving module 21 receives the first signaling service response message.

The context processing message is used to determine a second service that provides the user equipment. CCNF.

In an optional solution, the context processing message is a context release command; the first CCNF further includes a second generation module 26:

The receiving module 21 is further configured to: after the sending, by the sending module 23, the first signaling service response message and the context processing message, receive a signaling service completion message of the user equipment from the wireless access device;

The second generating module 26 is configured to generate a context release command of the user equipment after the receiving module 21 receives the signaling service completion message of the user equipment from the wireless access device.

Alternatively, in an optional solution, the context processing message is a context release command, and the receiving module 21 is further configured to: after the sending, the module, sends the first signaling service response message and the context processing message, The wireless access device receives a signaling service completion message of the user equipment.

The sending module 23 is further configured to send the signaling service completion message to the second CCNF after the receiving module 21 receives the signaling service completion message of the user equipment from the wireless access device.

The receiving module 21 is further configured to: after the receiving module 21 sends the signaling service completion message to the second CCNF, receive a context release command of the user equipment from the second CCNF.

Further, the sending module 23 is further configured to send, to the second CCNF, a notification message that the context of the user equipment has been released.

Optionally, the first CCNF2 further includes an obtaining module 24, where the acquiring module 24 is configured to acquire a security context of the user equipment, and add the security context to the signaling service request message.

The sending module 23 is specifically configured to send, after the sending the signaling service request message to the second CCNF, a signaling service request message after adding the security context to the second CCNF.

It should be noted that the first CCNF shown in the embodiment of the present application may be used to perform the action or the step of the first CCNF in the embodiment shown in FIG. 5, and the specific implementation manner of each functional module in the first CCNF and the For the technical effects, refer to the detailed description of the corresponding method embodiments, and details are not described herein again.

The first CCNF in the embodiment shown in FIG. 6 or FIG. 7 can be implemented in the first CCNF shown in FIG. As shown in FIG. 8, the first CCNF 1000 shown in FIG. 8 includes a processor 1001 and a transceiver 1004. The processor 1001 is connected to the transceiver 1004, such as through the bus 1002. Optionally, the first CCNF 1000 may further include a memory 1003. It should be noted that, in the actual application, the transceiver 1004 is not limited to two, and the structure of the first CCNF 1000 does not constitute a limitation on the embodiment of the present application.

The processor 1001 is applied to the functions of the determining module 12, the obtaining module 14, and the first generating module 15 shown in FIG. 6 in the embodiment of the present application. The transceiver 1004 includes a receiver and a transmitter. The transceiver 1004 is used in the embodiment of the present application to implement the functions of the receiving module 11 and the transmitting module 13 shown in FIG. 6.

The processor 1001 is applied to implement the functions of the determining module 22, the obtaining module 24, and the second generating module 26 shown in FIG. 7 in the embodiment of the present application. The transceiver 1004 includes a receiver and a transmitter. The transceiver 1004 is used in the embodiment of the present application to implement the functions of the receiving module 21 and the transmitting module 23 shown in FIG.

Optionally, the memory 1003 is configured to store application code for executing the solution of the present application, and is controlled by the processor 1001 for execution. The processor 1001 is configured to execute the application code stored in the memory 1003 to implement the action of the first CCNF provided by any of the embodiments shown in FIG.

Also provided in the embodiment of the present application is a computer storage medium for storing computer software instructions for use in the first CCNF, which includes a program designed to perform the above aspects as the first CCNF.

FIG. 9 is a schematic diagram of a modularization of a second CCNF according to an embodiment of the present application. The second CCNF in the embodiment of the present application may be the second CCNF provided in any of the embodiments shown in FIG. 3-5.

As shown in FIG. 9, the second CCNF3 in this embodiment of the present application may include: a receiving module 31, and an allocation. Module 32, transmitting module 33.

The receiving module 31 is configured to receive a signaling service request message of the user equipment from the first CCNF;

The allocating module 32 is configured to allocate a temporary identifier to the user equipment after the receiving module 31 receives the signaling service request message;

a sending module 33, configured to send a first signaling service response message to the first CCNF after the assigning module 32 allocates a temporary identifier to the user equipment, where the first signaling service response message carries the temporary Logo.

Optionally, the sending module 33 is further configured to: after the assigning module 32 allocates the temporary identifier to the user equipment, send a context establishment request or a context update request of the user equipment to the first CCNF, where The context establishment request or the context update request carries the identifier of the second CCNF.

Optionally, the first signaling service response message further carries indication information for instructing the user equipment to re-establish an RRC connection.

Optionally, the receiving module 31 is further configured to receive, by using the first CCNF, a signaling service completion message of the user equipment;

The sending module 33 is further configured to send the context release command of the user equipment to the first CCNF after the receiving module 31 receives the signaling service completion message sent by the first CCNF.

Optionally, the receiving module 31 is further configured to receive a notification message that the context of the user equipment that is sent by the first CCNF has been released.

Optionally, the signaling service request message carries a security context of the user equipment.

It should be noted that the second CCNF shown in the embodiment of the present application may be used to perform the action or step of the second CCNF in any of the embodiments shown in FIG. 3 to FIG. For the implementation manner and the technical effects brought about, refer to the detailed description of the corresponding method embodiments, and details are not described herein again.

The second CCNF in the embodiment shown in FIG. 9 can be implemented in the second CCNF shown in FIG. As shown in FIG. 10, the second CCNF 3000 shown in FIG. 10 includes a processor 3001 and a transceiver 3004.

The processor 3001 is connected to the transceiver 3004, such as through the bus 3002. Optionally, the second CCNF 3000 may further include a memory 3003.

It should be noted that, in the actual application, the transceiver 3004 is not limited to two, and the structure of the second CCNF 3000 does not constitute a limitation on the embodiment of the present application.

The processor 3001 is used in the embodiment of the present application to implement the functions of the distribution module 32 shown in FIG. The transceiver 3004 includes a receiver and a transmitter. The transceiver 3004 is used in the embodiment of the present application to implement the functions of the receiving module 31 and the transmitting module 32 shown in FIG.

Optionally, the memory 3003 is configured to store application code for executing the solution of the present application, and is controlled by the processor 3001 for execution. The processor 3001 is configured to execute the application code stored in the memory 3003 to implement the action of the second CCNF in any of the embodiments shown in FIGS.

Also provided in the embodiment of the present application is a computer storage medium for storing computer software instructions for use in the second CCNF, which includes a program designed to execute the second aspect of the CCNF.

FIG. 11 is a schematic diagram of a modularization of a wireless access device according to an embodiment of the present application. The wireless access device in the embodiment of the present application may be the wireless access device provided in any of the embodiments shown in FIG.

As shown in FIG. 11, the wireless access device 4 of the embodiment of the present application may include: a receiving module 41 and a determining module 42.

The receiving module 41 is configured to receive a context processing message of the user equipment from the first CCNF;

The determining module 42 is configured to determine, according to the context processing message received by the receiving module 41, a second CCNF that provides a service for the user equipment.

Optionally, the context processing message carries an identifier of a second CCNF that provides a service for the user equipment;

The determining module 42 is specifically configured to determine the CCNF indicated by the target network element identifier as the second CCNF.

It should be noted that the wireless access device shown in the embodiment of the present application may be used to perform the actions or steps of the wireless access device in any of the embodiments shown in FIG. 3 to FIG. For a specific implementation of the unit and the technical effects, refer to the detailed description of the corresponding method embodiments, and details are not described herein again.

The wireless access device in the embodiment shown in FIG. 11 can be implemented by the wireless access device shown in FIG. As shown in FIG. 12, a schematic diagram of a structure of a wireless access device is provided in the embodiment of the present application. The wireless access device 4000 shown in FIG. 12 includes a processor 4001 and a transceiver 4004.

The processor 4001 is connected to the transceiver 4004, such as through the bus 4002. Optionally, the wireless access device 4000 may further include a memory 4003.

It should be noted that, in the actual application, the transceiver 4004 is not limited to two, and the structure of the wireless access device 4000 does not constitute a limitation on the embodiments of the present application.

The processor 4001 is used in the embodiment of the present application to implement the function of the determining module 42 shown in FIG. The transceiver 4004 includes a receiver and a transmitter. The transceiver 4004 is used in the embodiment of the present application to implement the function of the receiving module 41 shown in FIG.

Optionally, the memory 4003 is configured to store application code for executing the solution of the present application, and is controlled by the processor 4001 for execution. The processor 4001 is configured to execute the application code stored in the memory 4003 to implement the actions of the wireless access device in any of the embodiments shown in FIGS.

Also provided in the embodiment of the present application is a computer storage medium for storing computer software instructions for use in the wireless access device, including a program designed to perform the above aspects for a wireless access device.

FIG. 13 is a schematic diagram of a modularization of a user equipment according to an embodiment of the present application. The user equipment in the embodiment of the present application may be the user equipment provided in any of the embodiments shown in FIG. 3-5.

As shown in FIG. 13, the user equipment 5 of the embodiment of the present application may include: a receiving module 51 and a sending module 52.

The receiving module 51 is configured to receive a second signaling service response message from the wireless access device, where The second signaling service response message carries indication information and the temporary identifier for instructing the user equipment to re-establish an RRC connection;

The sending module 52 is configured to send an RRC connection reestablishment request to the radio access device after the receiving module 51 receives the second signaling service response message, where the RRC connection reestablishment request carries the temporary identifier.

It should be noted that the user equipment shown in the embodiment of the present application may be used to perform the action or the step of the user equipment in any embodiment shown in FIG. 3 to FIG. 5, and the specific implementation manner of each functional unit in the user equipment and For the technical effects, refer to the detailed description of the corresponding method embodiments, and details are not described herein again.

The user equipment in the embodiment shown in FIG. 13 can be implemented by the user equipment shown in FIG. As shown in FIG. 14, a schematic diagram of a structure of a user equipment is provided in the embodiment of the present application. The user equipment 5000 shown in FIG. 14 includes: a processor 5001 and a transceiver 5004.

The processor 5001 is connected to the transceiver 5004, such as through the bus 5002. Optionally, the user equipment 5000 may further include a memory 5003.

It should be noted that, in the actual application, the transceiver 5004 is not limited to two, and the structure of the user equipment 5000 does not constitute a limitation on the embodiments of the present application.

The transceiver 5004 includes a receiver and a transmitter. The transceiver 5004 is used in the embodiment of the present application to implement the functions of the receiving module 51 and the transmitting module 52 shown in FIG.

Optionally, the memory 5003 is configured to store application code for executing the solution of the present application, and is controlled by the processor 5001 for execution. The processor 5001 is configured to execute the application code stored in the memory 5003 to implement the actions of the user equipment in any of the embodiments shown in FIG.

Also provided in the embodiment of the present application is a computer storage medium for storing computer software instructions for use by the user equipment, which includes a program designed to perform the above aspects for the user equipment.

It should be noted that the processor, such as the processor 1001 of FIG. 8, the processor 3001 of the embodiment of FIG. 10, the processor 4001 of the embodiment of FIG. 12, and the processor 5001 of the embodiment of FIG. 14, may be a central processing unit (Central). Processing Unit, CPU), general purpose processor, digital signal processing (DSP), integrated circuit (Application Specific Integrated Circuit, ASIC), Field-Programmable Gate Array (FPGA) or other programmable logic device, transistor logic device, hardware component, or any combination thereof. It is possible to implement or carry out the various illustrative logical blocks, modules and circuits described in connection with the present disclosure. The processor can also be a combination of computing functions, for example, including one or more microprocessor combinations, a combination of a DSP and a microprocessor, and the like.

The bus, such as bus 100 of Figure 8, bus 3002 of the Figure 10 embodiment, bus 4002 of the Figure 12 embodiment, and bus 5002 of the Figure 14 embodiment, may include a path for communicating information between the components. The bus can be a Peripheral Component Interconnect (PCI) bus or an Extended Industry Standard Architecture (EISA) bus. The bus can be divided into an address bus, a data bus, a control bus, and the like. For ease of representation, the bus is represented by only one thick line, but does not mean that there is only one bus or one type of bus.

The memory, such as the memory 1003 of FIG. 8, the memory 3003 of the embodiment of FIG. 10, the memory 4003 of the embodiment of FIG. 12, and the memory 5003 of the embodiment of FIG. 14, may be read-only memory (ROM) or may be stored statically. Other types of static storage devices for information and instructions, random access memory (RAM) or other types of dynamic storage devices that store information and instructions, or electrically erasable programmable read only memory (Electrically Erasable) Programmable Read-Only Memory (EEPROM), Compact Disc Read-Only Memory (CD-ROM) or other optical disc storage, optical disc storage (including compact discs, laser discs, optical discs, digital versatile discs, Blu-ray discs, etc.), A disk storage medium or other magnetic storage device, or any other medium that can be used to carry or store desired program code in the form of an instruction or data structure and that can be accessed by a computer, but is not limited thereto.

Although the present application has been described herein in connection with the various embodiments, those skilled in the art can Other variations of the disclosed embodiments are achieved. In the claims, the word "comprising" does not exclude other components or steps, and "a" or "an" does not exclude a plurality. A single processor or other unit may fulfill several of the functions recited in the claims. Certain measures are recited in mutually different dependent claims, but this does not mean that the measures are not combined to produce a good effect.

The technical solutions in the embodiments of the present application are described below in conjunction with the accompanying drawings in the embodiments of the present application. The description and rights of this application The terms "first", "second", "third" and "fourth" and the like in the claims and the drawings are used to distinguish different objects, and are not intended to describe a particular order. Furthermore, the terms "comprises" and "comprising" and "comprising" are intended to cover a non-exclusive inclusion. For example, a process, method, system, product, or device that comprises a series of steps or units is not limited to the listed steps or units, but optionally also includes steps or units not listed, or alternatively Other steps or units inherent to these processes, methods, products or equipment.

Those skilled in the art will appreciate that embodiments of the present application can be provided as a method, apparatus (device), or computer program product. Thus, the present application can take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment in combination of software and hardware. Moreover, the application can take the form of a computer program product embodied on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) including computer usable program code. The computer program is stored/distributed in a suitable medium, provided with other hardware or as part of the hardware, or in other distributed forms, such as over the Internet or other wired or wireless telecommunication systems.

The present application is described with reference to flowchart illustrations and/or block diagrams of the methods, apparatus, and computer program products of the embodiments of the present application. It will be understood that each flow and/or block of the flowchart illustrations and/or FIG. These computer program instructions can be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing device to produce a machine for the execution of instructions for execution by a processor of a computer or other programmable data processing device. Means for implementing the functions specified in one or more of the flow or in a block or blocks of the flow chart.

The computer program instructions can also be stored in a computer readable memory that can direct a computer or other programmable data processing device to operate in a particular manner, such that the instructions stored in the computer readable memory produce an article of manufacture comprising the instruction device. The apparatus implements the functions specified in one or more blocks of a flow or a flow and/or block diagram of the flowchart.

These computer program instructions can also be loaded onto a computer or other programmable data processing device such that a series of operational steps are performed on a computer or other programmable device to produce computer-implemented processing for execution on a computer or other programmable device. The instructions provide steps for implementing the functions specified in one or more of the flow or in a block or blocks of a flow diagram.

While the present invention has been described in connection with the specific embodiments and embodiments thereof, various modifications and combinations can be made without departing from the spirit and scope of the application. Correspondingly, this is said The specification and drawings are merely illustrative of the invention as defined by the appended claims, and are intended to cover any and all modifications, variations, It will be apparent to those skilled in the art that various modifications and changes can be made in the present application without departing from the spirit and scope of the application. Thus, it is intended that the present invention cover the modifications and variations of the present invention.

Claims

A signaling redirection method, comprising:

The first control plane network element function device CCNF receives a signaling service request message of the user equipment from the wireless access device;

Determining, by the first CCNF, the second CCNF serving the user equipment according to the signaling service request message;

Sending, by the first CCNF, the signaling service request message to the second CCNF;

Receiving, by the first CCNF, a first signaling service response message from the second CCNF, where the first signaling service response message carries a temporary identifier that is allocated by the second CCNF to the user equipment;

Sending, by the first CCNF, the first signaling service response message and the context processing message to the wireless access device, or the first CCNF according to the first signaling service response message, to the wireless connection The ingress device sends a second signaling service response message;

The second signaling service response message carries the temporary identifier and indication information used to indicate that the user equipment re-establishes an RRC connection, and the context processing message or the second signaling service response message is used to determine A second CCNF that provides service to the user equipment.
The method of claim 1 wherein

The context processing message is a context setup request or a context update request received from the second CCNF, and the context processing message carries an identifier of the second CCNF.
The method according to claim 2, wherein the context processing message further carries a target connection identifier, wherein the target connection identifier is used to indicate that the wireless access device and the second CCNF are used for a transmission. The connection of the signaling of the user equipment.
The method of claim 1 further comprising:

If the first signaling service response message further carries indication information for instructing the user equipment to re-establish a radio resource control RRC connection, the first CCNF determines the first signaling service response message as the a second signaling service response message;

If the first signaling service response message does not carry the indication information for instructing the user equipment to re-establish an RRC connection, the first CCNF generates the indication information, and according to the temporary identifier and the indication information Generating the second signaling service response message.
The method according to claim 1, wherein the context processing message is a context release command;

The method further includes:

Receiving, by the first CCNF, a signaling service completion message of the user equipment from the wireless access device;

The first CCNF generates a context release command of the user equipment; or the first CCNF sends the signaling service completion message to the second CCNF, and receives the user equipment from the second CCNF Context release command.
The method according to any one of claims 1-5, wherein the specified field of the temporary identifier is used to indicate the identity of the second CCNF.
A signaling redirection method, comprising:

Receiving, by the second CCNF, a signaling service request message of the user equipment from the first CCNF;

After receiving the signaling service request message, the second CCNF allocates a temporary identifier to the user equipment;

The second CCNF sends a first signaling service response message to the first CCNF, where the first signaling service response message carries the temporary identifier.
The method of claim 7 further comprising:

The second CCNF sends a context establishment request or a context update request of the user equipment to the first CCNF, where the context establishment request or the context update request carries an identifier of the second CCNF.
The method according to claim 8, wherein the context establishment request or the context update request further carries a target connection identifier; wherein the target connection identifier is used to indicate the none A connection between the line access device and the second CCNF for transmitting signaling of the user equipment.
The method according to claim 7, wherein the first signaling service response message further carries indication information for instructing the user equipment to re-establish an RRC connection.
The method of claim 7 further comprising:

Receiving, by the second CCNF, a signaling service completion message of the user equipment from the first CCNF;

The second CCNF sends a context release command of the user equipment to the first CCNF.
The method according to any one of claims 7 to 11, wherein the specified field of the temporary identifier is used to indicate the identity of the second CCNF.
A signaling redirection method, comprising:

The wireless access device receives a context processing message of the user equipment from the first CCNF;

The wireless access device determines, according to the context processing message, a second CCNF that provides a service for the user equipment.
The method according to claim 13, wherein the context processing message carries an identifier of a second CCNF that provides a service for the user equipment;

Determining, by the wireless access device, the second CCNF that provides the service for the user equipment according to the context processing message, including:

The wireless access device determines the CCNF indicated by the identifier of the second CCNF as the second CCNF.
The method according to claim 14, wherein the context processing message further carries a target connection identifier, wherein the target connection identifier is used to indicate that the wireless access device and the second CCNF are used for a transmission. The connection of the signaling of the user equipment.
A signaling redirection method, comprising:

The user equipment receives a second signaling service response message from the wireless access device, where the second signaling service response message carries indication information and the temporary identifier for instructing the user equipment to re-establish an RRC connection;

The user equipment sends an RRC connection reestablishment request to the radio access device, where the RRC connection reestablishment request carries the temporary identifier.
The method according to claim 16, wherein the specified field of the temporary identifier is used to indicate an identifier of a second CCNF that provides service for the user equipment.
A first CCNF, characterized by comprising:

a receiving module, configured to receive, by the wireless access device, a signaling service request message of the user equipment;

a determining module, configured to determine, according to the signaling service request message, a second CCNF that provides a service for the user equipment;

a sending module, configured to send the signaling service request message to the second CCNF;

The receiving module is further configured to receive a first signaling service response message from the second CCNF, where the first signaling service response message carries a temporary identifier that is allocated by the second CCNF to the user equipment;

The sending module is further configured to send the first signaling service response message and the context processing message to the wireless access device, or the sending module is further configured to: according to the first signaling service response message Sending a second signaling service response message to the wireless access device;

The second signaling service response message carries the temporary identifier and indication information used to indicate that the user equipment re-establishes an RRC connection, and the context processing message or the second signaling service response message is used to determine A second CCNF that provides service to the user equipment.
The first CCNF of claim 18, wherein

The context processing message is a context setup request or a context update request received from the second CCNF, and the context processing message carries an identifier of the second CCNF.
The first CCNF according to claim 19, wherein the context processing message further carries a target connection identifier; wherein the target connection identifier is used to indicate the wireless access device A connection between the backup and the second CCNF for transmitting signaling of the user equipment.
The first CCNF of claim 18, wherein

The determining module is further configured to: if the first signaling service response message further carries indication information used to instruct the user equipment to re-establish a radio resource control RRC connection, determine the first signaling service response message Responding to the second signaling service message;

The first CCNF further includes a first generation module:

The first generating module is configured to: if the first signaling service response message does not carry indication information that is used to indicate that the user equipment re-establishes an RRC connection, generate the indication information, and according to the temporary identifier and The indication information generates the second signaling service response message.
The first CCNF according to claim 18, wherein the context processing message is a context release command;

The first CCNF further includes a second generation module:

The receiving module is further configured to receive a signaling service completion message of the user equipment from the wireless access device;

The second generating module is configured to generate a context release command of the user equipment; or the sending module is further configured to send the signaling service completion message to the second CCNF; the receiving module, Also used to receive a context release command of the user equipment from the second CCNF.
The first CCNF according to any one of claims 18 to 22, wherein the specified field of the temporary identifier is used to indicate an identifier of the second CCNF.
A second CCNF, comprising:

a receiving module, configured to receive a signaling service request message of the user equipment from the first CCNF;

An allocating module, configured to allocate a temporary identifier to the user equipment after receiving the signaling service request message;

And a sending module, configured to send a first signaling service response message to the first CCNF, where the first signaling service response message carries the temporary identifier.
A second CCNF according to claim 24, wherein

The sending module is further configured to send a context establishment request or a context update request of the user equipment to the first CCNF, where the context establishment request or the context update request carries the identifier of the second CCNF.
The second CCNF according to claim 24, wherein the first signaling service response message further carries indication information for instructing the user equipment to re-establish an RRC connection.
A second CCNF according to claim 24, wherein

The receiving module is further configured to receive, by using the first CCNF, a signaling service completion message of the user equipment;

The sending module is further configured to send a context release command of the user equipment to the first CCNF.
A wireless access device, comprising:

a receiving module, configured to receive a context processing message of the user equipment from the first CCNF;

And a determining module, configured to determine, according to the context processing message, a second CCNF that provides a service for the user equipment.
The wireless access device according to claim 28, wherein the context processing message carries an identifier of a second CCNF that provides a service for the user equipment;

The determining module is specifically configured to determine a CCNF indicated by the identifier of the second CCNF as the second CCNF.
A user equipment, comprising:

a receiving module, configured to receive a second signaling service response message from the wireless access device, where the second signaling service response message carries indication information and the temporary identifier that are used to indicate that the user equipment re-establishes an RRC connection ;

And a sending module, configured to send an RRC connection reestablishment request to the radio access device, where the RRC connection reestablishment request carries the temporary identifier.