CN109565723A

CN109565723A - Method for switching network, device and system

Info

Publication number: CN109565723A
Application number: CN201780050062.5A
Authority: CN
Inventors: 金辉; 欧阳国威; 窦凤辉; 何岳
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2017-04-21
Filing date: 2017-04-21
Publication date: 2019-04-02
Anticipated expiration: 2037-04-21
Also published as: WO2018191952A1; CN109565723B

Abstract

The application provides a kind of method for switching network, device and system, this method comprises: UE accesses the first communication system by base station, after knowing that the second communication system is supported in base station, first message is sent to base station, the first information is carried in first message, the first information is used to indicate to be switched in base station, and UE receives the second message that base station is sent, UE second information used in the second communication system is carried in second message, UE uses second the second communication system of information access.

Description

Method for switching network, device and system

Technical field

This application involves field of communication technology more particularly to a kind of method for switching network, device and system.

Background technique

With the 5th third-generation mobile communication technology (5th-generation, development referred to as: 5G), the core net and 4G network of 5G network and the core net of 2G/3G network are simultaneously deposited, therefore the case where there are user equipmenies (User Equipment, UE) from 4G network to 5G network switching.It arranges net initial stage in 5G, there are three types of the base stations 4G of type: 4G traditional base station (UMTS Terrestrial radio access network (Evolved UMTS Terrestrial Radio Access Network of evolution, E-UTRAN)), (Evolved) E-UTRAN, UE that enhanced E-UTRAN and evolution are carried out to carry out 4G to 5G switching can access 5G network by Evolved E-UTRAN.

UE may be implemented in the related technology to switch over from 4G to 5G, but the base station 4G in its switching flow is enhanced E-UTRAN, is not the traditional E-UTRAN of 4G, and arrange net initial stage in 5G, all 4G E-UTRAN will not be enhanced, there is the non-reinforced E-UTRAN in part.For non-reinforced E-UTRAN, when the target BS of switching is Evolved E-UTRAN, the non-reinforced E-TURTAN will be considered that target BS is the base station 4G, and UE is switched to 4G network, after UE is switched to Evolved E-UTRAN from non-reinforced E-UTRAN inside 4G, how namely UE carries out the switching between 4G and 5G inside the Evolved E-UTRAN, is a urgent problem needed to be solved when Evolved E-UTRAN is in connected state.

Summary of the invention

The application provides a kind of method for switching network, device and system, and the switching between 4G and 5G how is carried out inside the Evolved E-UTRAN to solve the problem of UE when Evolved E-UTRAN is in connected state.

First aspect, the application provides a kind of method for switching network, it include: after UE knows that the second communication system is supported in base station by the SIB message that monitoring base station is sent, first message is sent to base station, the first information is carried in first message, the first information is used to indicate to be switched in base station, and UE receives the second message that base station is sent, UE second information used in the second communication system is carried in second message, UE uses second the second communication system of information access.To realize UE when Evolved E-UTRAN is in connected state, the switching between 4G and 5G is carried out inside the Evolved E-UTRAN, when UE is moved between 4G and 5G, it is ensured that the continuity of business.

In a kind of possible design, the version of second communication system is higher than first communication system.

In a kind of possible design, first message is switched to the second communication system from the first communication system for requesting, so that base station sends third message to the second core network element of the first communication system, the mark and third information of UE are carried in third message, UE is switched to the second communication system from the first communication system for knowing the second core network element by third message, and third information is used to indicate to be switched in base station.

In a kind of possible design, first message is switched to the second communication system from the first communication system for requesting, so that base station sends third message to the second core network element of the first communication system, the mark and first of UE is carried in third message UE is switched to the second communication system from the first communication system for knowing the second core network element by information, third message.

In a kind of possible design, the mark and the first information of UE is to be carried by source to target clear container.

In a kind of possible design, the UE knows that the second communication system is supported in the base station, comprising:

The UE, which monitors the instruction information carried in the system information that the base station is sent, knows that second communication system is supported in the base station；Alternatively,

The UE receives the instruction information that the base station is sent, and knows that second communication system is supported in the base station according to the instruction information.

In a kind of possible design, the 4th message sent comprising UE to the first core network element in first message, so that base station sends the 4th message to the first core network element, the mark and the 4th information of 4th message carrying UE, 4th information is used to indicate to be switched in base station, 4th message carries out location updating or the 4th message for UE request and carries out mobile register update for UE request.

In a kind of possible design, the 5th message sent comprising UE to the second core network element in first message, so that base station sends the 5th message to the first core network element, the mark and the 5th information of 5th message carrying UE, 5th information is used to indicate to be switched in base station, and the 5th message carries out location updating for UE request.

In a kind of possible design, the second information includes: that UE passes through wireless resource information used in the second communication system of base station access.

In a kind of possible design, the mark of UE is the mark that base station is UE distribution, alternatively, the mark of UE is the mark that the second core network element is UE distribution.

Second aspect, the application provides a kind of method for switching network, it include: that base station receives the first message that the first core network element of the second communication system is sent, UE is switched to the second communication system from the first communication system for requesting by first message, the mark and the first information of UE are carried in first message, the first information is used to indicate to be switched in base station, base station according to first condition determine UE in the second communication system used in the second information, first condition includes the mark and the first information of UE, base station sends second message to UE, carries the second information in second message.To realize UE when Evolved E-UTRAN is in connected state, the switching between 4G and 5G is carried out inside the Evolved E-UTRAN, when UE is moved between 4G and 5G, it is ensured that the continuity of business.

In a kind of possible design, the version of the second communication system is higher than the first communication system.

In a kind of possible design, before the first message that the first core network element that base station receives the second communication system is sent, further includes: base station receives the third message that UE is sent, and third message is switched to the second communication system from the first communication system for requesting；Base station sends the 4th message to the second core network element of the first communication system, the mark and third information of UE are carried in 4th message, UE is switched to the second communication system from the first communication system for knowing the second core network element by the 4th message, and third information is used to indicate to be switched in base station.

In a kind of possible design, before the first message that the first core network element that base station receives the second communication system is sent, further includes: base station receives the third message that UE is sent, and third message is switched to the second communication system from the first communication system for requesting；Base station sends the 4th message to the second core network element of the first communication system, and the mark and the first information of UE are carried in the 4th message, and UE is switched to the second communication system from the first communication system for knowing the second core network element by the 4th message.

In a kind of possible design, base station is sent to UE before second message, further includes:

Base station saves the mark of UE and the corresponding relationship of the second information；Base station sends first message to the first core network element Confirmation message；Base station receives the 5th message that the second core network element is sent, and the mark of UE is carried in the 5th message, base station obtains the second information according to the mark and corresponding relationship of UE, and sends the second information to UE；Or, base station receives the 5th message that the second core network element is sent, the mark and protocol Data Unit PDU session context of UE are carried in 5th message, base station obtains the second information according to the mark and corresponding relationship of UE, and sends the second information and PDU session context to UE.

In a kind of possible design, before the first message that the first core network element that base station receives the second communication system is sent, further include: base station receives the 6th message that UE is sent, the 7th message sent comprising UE to the first core network element in 6th message, 7th message carries the mark and the 4th information of UE, and the 4th information is used to indicate to be switched in base station；

Base station sends the 7th message to the first core network element, and the 7th message carries out location updating or the 7th message for UE request and carries out mobile register update for UE request.

In a kind of possible design, before the first message that the first core network element that base station receives the second communication system is sent, further include: base station receives the 8th message that UE is sent, the 9th message sent comprising UE to the second core network element in 8th message, 9th message carries the mark and the 4th information of UE, and the 4th information is used to indicate to be switched in base station；

Base station sends the 9th message to the first core network element, and the 9th message carries out tracing section updating for UE request.

In a kind of possible design, the first information further includes PDU session context, base station according to first condition determine UE in the second communication system used in the second information, it include: wireless resource information of the base station according to first condition acquisition UE in the first communication system, wireless resource information and PDU session context generation second information of the base station based on the first communication system.

The third aspect, the application provides a kind of method for switching network, it include: the second message for being used to establish protocol Data Unit PDU session for user equipment (UE) that the first core network element of the second communication system receives the third core network element transmission of the second communication system, second message carries PDU context, first core network element sends first message to base station, UE is switched to the second communication system from the first communication system for requesting by first message, the mark and the first information of UE are carried in first message, the first information is used to indicate to be switched in base station.To realize UE when Evolved E-UTRAN is in connected state, the switching between 4G and 5G is carried out inside the Evolved E-UTRAN, when UE is moved between 4G and 5G, it is ensured that the continuity of business.

In a kind of possible design, what the third core network element that the first core network element receives the second communication system was sent is used to establish before the second message of PDU session for UE, further include: the first core network element receives the third message that the second core network element of the first communication system is sent, third message carries the mark and the first information of UE, and the first information is used to indicate to be switched in base station.

In a kind of possible design, third message is sent after the second core network element receives the 4th message that base station is sent, and the 4th message carries the mark of the first information and UE.

In a kind of possible design, third message is sent after the second core network element receives the 5th message that UE is sent, and the 5th message carries out location updating for UE request.

In a kind of possible design, the first core network element is received before the second message that third core network element is sent, further includes: and the first core network element receives the 6th message that UE is sent, and the 6th message carries out location updating for UE request, Or the 6th message for UE request carry out mobile register update.

Fourth aspect, the application provides a kind of user equipment, it include: processing module, for accessing the first communication system by base station, know that the second communication system, sending module, for sending first message to base station are supported in the base station, the first information is carried in first message, the first information is used to indicate to be switched in base station；Receiving module carries UE second information used in the second communication system in second message for receiving the second message of base station transmission；Processing module is also used for second the second communication system of information access.To realize UE when Evolved E-UTRAN is in connected state, the switching between 4G and 5G is carried out inside the Evolved E-UTRAN, when UE is moved between 4G and 5G, it is ensured that the continuity of business.

In a kind of possible design, first message is switched to the second communication system from the first communication system for requesting, so that base station sends third message to the second core network element of the first communication system, the mark and the first information of UE are carried in third message, UE is switched to the second communication system from the first communication system for knowing the second core network element by third message.

In a kind of possible design, the processing module is specifically used for:

It monitors the instruction information carried in the system information that the base station is sent and knows that second communication system is supported in the base station；Alternatively,

The receiving module is also used to receive the instruction information that the base station is sent, and the processing module is specifically used for knowing that second communication system is supported in the base station according to the instruction information.

5th aspect, the application provides a kind of base station, it include: receiving module, the first message that the first core network element for receiving the second communication system is sent, user equipment (UE) is switched to the second communication system from the first communication system for requesting by first message, the mark and the first information of UE are carried in first message, the first information is used to indicate to be switched in base station；Processing module, for according to first condition determine UE in the second communication system used in the second information, first condition includes The mark and the first information of UE；Sending module carries the second information in second message for sending second message to UE.To realize UE when Evolved E-UTRAN is in connected state, the switching between 4G and 5G is carried out inside the Evolved E-UTRAN, when UE is moved between 4G and 5G, it is ensured that the continuity of business.

In a kind of possible design, receiving module is also used to: before the first message that the first core network element for receiving the second communication system is sent, receiving the third message that UE is sent, third message is switched to the second communication system from the first communication system for requesting；Sending module is also used to: sending the 4th message to the second core network element of the first communication system, the mark and third information of UE are carried in 4th message, UE is switched to the second communication system from the first communication system for knowing the second core network element by the 4th message, and third information is used to indicate to be switched in base station.

In a kind of possible design, receiving module is also used to: before the first message of the first core network element transmission for receiving the second communication system, receiving the third message that UE is sent, third message is switched to the second communication system from the first communication system for requesting；

Sending module is also used to: sending the 4th message to the second core network element of the first communication system, the mark and the first information of UE are carried in 4th message, UE is switched to the second communication system from the first communication system for knowing the second core network element by the 4th message.

In a kind of possible design, processing module is also used to: before sending module sends second message to UE, saving the mark of UE and the corresponding relationship of the second information；

Sending module is also used to send the confirmation message of first message to the first core network element；

Receiving module is also used to receive the 5th message of the second core network element transmission, the mark of UE is carried in the 5th message, sending module is also used to obtain the second information according to the mark and corresponding relationship of UE, and sends the second information to UE；Or, receiving module is also used to receive the 5th message of the second core network element transmission, the mark and protocol Data Unit PDU session context of UE are carried in 5th message, sending module is also used to obtain the second information according to the mark and corresponding relationship of UE, and sends the second information and PDU session context to UE.

In a kind of possible design, receiving module is also used to: before the first message that the first core network element for receiving the second communication system is sent, receive the 6th message that UE is sent, the 7th message sent comprising UE to the first core network element in 6th message, 7th message carries the mark and the 4th information of UE, and the 4th information is used to indicate to be switched in base station；Sending module is also used to send the 7th message to the first core network element, and the 7th message carries out location updating or the 7th message for UE request and carries out mobile register update for UE request.

In a kind of possible design, receiving module is also used to: before the first message that the first core network element for receiving the second communication system is sent, receive the 8th message that UE is sent, the 9th message sent comprising UE to the second core network element in 8th message, 9th message carries the mark and the 4th information of UE, and the 4th information is used to indicate to be switched in base station；

Sending module is also used to send the 9th message to the first core network element, and the 9th message carries out tracing section updating for UE request.

In a kind of possible design, the first information further includes PDU session context, processing module is specifically used for: obtaining UE in the wireless resource information of the first communication system according to first condition, and the wireless resource information based on the first communication system and PDU session context generate the second information.

6th aspect, the application provide a kind of core network element, comprising:

Receiving module, the second message for being used to establish protocol Data Unit PDU session for user equipment (UE) that the third core network element for receiving the second communication system is sent, second message carry PDU context；Sending module, for sending first message to base station, UE is switched to the second communication system from the first communication system for requesting, the mark and the first information of UE is carried in first message, the first information is used to indicate to be switched in base station by first message.To realize UE when Evolved E-UTRAN is in connected state, the switching between 4G and 5G is carried out inside the Evolved E-UTRAN, when UE is moved between 4G and 5G, it is ensured that the continuity of business.

In a kind of possible design, receiving module is also used to: being used to be before UE establishes the second message of PDU session what the third core network element for receiving the second communication system was sent, receive the third message that the second core network element of the first communication system is sent, third message carries the mark and the first information of UE, and the first information is used to indicate to be switched in base station.

In a kind of possible design, receiving module is also used to: before receiving the second message that third core network element is sent, the 6th message that UE is sent is received, the 6th message carries out location updating or the 6th message for UE request and carries out mobile register update for UE request.

7th aspect, the application provide a kind of communication system, including base station described in user equipment described in each possible design of fourth aspect and fourth aspect and the 5th aspect and the 5th each possible design of aspect.

Eighth aspect, the application provides a kind of readable storage medium storing program for executing, it is stored with and executes instruction in readable storage medium storing program for executing, when at least one processor of network switching device, which executes this, to be executed instruction, network switching device executes the method for switching network of first aspect, second aspect or the third aspect.

9th aspect, the application provide a kind of program product, which includes executing instruction, this, which is executed instruction, is stored in readable storage medium storing program for executing.At least one processor of network switching device can read this from readable storage medium storing program for executing and execute instruction, at least one processor executes this and executes instruction so that network switching device implements the method for switching network of first aspect, second aspect or the third aspect.

Detailed description of the invention

Fig. 1 is network architecture schematic diagram provided by the present application；

Fig. 2 is the interaction flow schematic diagram of method for switching network embodiment one provided by the present application；

Fig. 3 is the interaction flow schematic diagram of method for switching network embodiment two provided by the present application；

Fig. 4 is the interaction flow schematic diagram of method for switching network embodiment three provided by the present application；

Fig. 5 is the structural schematic diagram of the application UE embodiment one；

Fig. 6 is the structural schematic diagram of the application base station embodiment one；

Fig. 7 is the structural schematic diagram of the application UE embodiment two；

Fig. 8 is the structural schematic diagram of the application base station embodiment two.

Specific embodiment

The technical solution of the application, it can be applied to the various communication systems of wireless cellular network, such as: global mobile communication (Global System of Mobile communication, abbreviation GSM) system, CDMA (Code Division Multiple Access, abbreviation CDMA) system, wideband code division multiple access (Wideband Code Division Multiple Access Wireless, abbreviation WCDMA) system, General Packet Radio Service (General Packet Radio Service, abbreviation GPRS) system, LTE system, universal mobile communications System (Universal Mobile Telecommunications System, referred to as: UMTS) etc., the application does not limit.

The technical solution of the application is mainly used in 4G communication system and 5G communication system, and in the communication system of the application application, the network element being related to is base station (also referred to as access network equipment) and UE.

Fig. 1 is network architecture schematic diagram provided by the present application, it include: UMTS Terrestrial radio access network (the Evolved UMTS Terrestrial Radio Access Network of UE, evolution, E-UTRAN), mobile management entity (Mobile Management Entity, MME), gateway (Serving Gateway, SGW), user plane functions (User Plane Function, UPF)+PDN Gateway control plane (PDN Gateway-Control plane, PGW-C), conversation management functional (Session Management Function, SMF)+PDN Gateway user face (PDN Gateway-User plane, PGW-U), policy control functions (policy control Function, PCF)+Policy and Charging Rules Function (Policy and Charging Rules Function, PCRF), home subscribed services device (Home Subscriber Server, HSS)+uniform data management (Unified Data Management, UDM), access and mobile management function to ps domain (Access and Mobility management Function, AMF) and evolution E-UTRAN (" Evolved " E-UTRAN).

The network architecture of the application includes the first communication system, the second communication system and UE, it include shared network element and shared base station (" Evolved " E-UTRAN) between first communication system and the second communication system, the version of second communication system is higher than the first communication system, in the embodiment of the present application, first communication system is 4G communication system, and the second communication system is 5G communication system.

Wherein, E-UTRAN is 4G side group station, and UE can access 4G communication system by the base station；" Evolved " E-UTRAN is the enhancing to 4G side group station, and UE can access 5G communication system by the base station.

MME is 4G equipment of the core network, is responsible for authenticating UE, authorizing, mobile management, session management；Protocol data network (protocol data network of the UE in 4G, PDN) the association EPS load identification (Linked EPS Bearer ID, LBI) for connecting (Connection or Connectivity) is distributed by the entity.

SGW is 4G equipment of the core network (core network gateway), is responsible for the forwarding of data, downlink data storage etc..

UPF+PGW-U is the equipment of the core network that 4G and 5G is shared, i.e. 4G and 5G close the equipment of the core network set, the function including UPF and PGW-U.Wherein, UPF is the user face equipment of 5G core net, provides the service of user face for the PDU session of UE；It is the interface gateway between carrier network and external network.PGW-U is the user face equipment of 4G core net, provides the service of user face for the PDN connection of UE；It is the interface gateway between carrier network and external network.UPF+PGW-U is also referred to as PGW-U+UPF, as long as the equipment comprising UPF and PGW-U function is identical as this equipment.

SMF+PGW-C is the equipment of the core network that 4G and 5G is shared, i.e. 4G and 5G close the equipment of the core network set, the function including SMF and PGW-C.Wherein, SMF is the control plane equipment of 5G core net, provides control plane service for the PDU session of UE；The PDU session of 5G is managed, the QoS of 5G is managed, is responsible for UE distribution IP address, is responsible for UE selection UPF.PGW-C is the control plane equipment of 4G core net, provides the service of user face for the PDN connection of UE；It is responsible for UE distribution IP address, establishes EPS carrying for UE.SMF+PGW-C is also referred to as PGW-C+SMF, as long as the equipment comprising SMF and PGW-C function is identical as this equipment.

PCF+PCRF is the equipment of the core network that 4G and 5G is shared, i.e. 4G and 5G close the equipment of the core network set, including PCF and PCRF.Wherein, PCRF is 4G equipment of the core network, is responsible for generating the strategy that user establishes Deta bearer (bearer).PCF is 5G equipment of the core network, similar with PCRF function.PCF+PCRF is also referred to as PCRF+PCF, as long as the equipment comprising PCF and PCRF function is identical as this equipment.

UDM+HSS is the equipment of the core network that 4G and 5G is shared, i.e. 4G and 5G close the equipment of the core network set, including HSS and UDM.Wherein, HSS is 4G equipment of the core network, for saving the subscription data of user.SDM is 5G equipment of the core network, for saving the subscription data of user.UDM+HSS is also referred to as HSS+UDM, as long as the equipment comprising HSS and UDM function is identical as this equipment.

AMF is that 5G equipment of the core network is managed the mobility of user for authenticating, authorizing to user.

Nx interface is the interface between MME and AMF, which is optional.

In the related technology, the process that 4G is switched over to 5G is as follows:

1, the measurement report that enhanced E-UTRAN is reported according to UE, determination need UE being switched to 5G from 4G.

2, enhanced E-UTRAN is to 4G network element-mobile management entity (Mobile Management Entity, referred to as: MME) send switching request message, source is carried within the message to target clear container (Source to Target Transparent Container), location area information tracking area identification (Tracking area identify belonging to the mark of the base station target 5G and the base station target 5G, TAI), source carries the wireless capability message of UE into target clear container, enhanced E-UTRAN is the wireless resource information of UE distribution, target cell information etc..The base station target 5G include 5G system define dedicated for access 5G core net base station and Evolved E-UTRAN.

3, MME determines core network element-access and mobile management function to ps domain (the Access and Mobility management Function of 5G, referred to as: AMF), and to AMF forward Redirection Request message (Forward relocation Request) is sent.

4, AMF is determined as the conversation management functional (Session Management Function abbreviation: SMF) of UE offer service according to forward Redirection Request message, and protocol Data Unit (Protocol Data Unit is sent to SMF, referred to as: PDU) request is established in session (Session), carries packet data network (Packet Data Network abbreviation: PDN) connection (Connection or Connectivity) context (Context) within the message.

5, SMF according to PDN connection context determine UE in 5G used in PDU session context.

6, SMF sends conversation establishing request to user plane functions (User Plane Function, referred to as: UPF) gateway, establishes session in 5G for UE.

7, SMF returns to PDU session establishment response message to AMF, carries PDU session context within the message.

8, AMF sends switching request message to the base station 5G, carries source within the message to target clear container and PDU session context.

9, the base station 5G determines UE wireless resource information used in the base station 5G according to source to target clear container and PDU session context, and target is generated to source transparent vessel (target to source transparent container), the switching response message for carrying target to source transparent vessel is sent to AMF.

10, AMF sends forward to MME and redirects response message, within the message comprising target to source transparent vessel.

11, MME sends switching command handover command to enhanced E-UTRAN, carries target within the message to source transparent vessel.

12, enhanced E-UTRAN sends switching command handover command message to UE, carries target within the message to source transparent vessel, UE updates wireless resource information according to handover request, and replys handoff completion message to the base station 5G.

The base station 4G in above-mentioned switching flow is enhanced E-UTRAN, is not the traditional E-UTRAN of 4G, and is arranged net initial stage in 5G, all 4G E-UTRAN will not be enhanced, and there is the non-reinforced E-UTRAN in part.For non-reinforced E-UTRAN, when the target BS of switching is Evolved E-UTRAN, the non-reinforced E-TURTAN will be considered that target BS is the base station 4G, and UE is switched to 4G network, after UE is switched to Evolved E-UTRAN from non-reinforced E-UTRAN inside 4G, how namely UE carries out the switching between 4G and 5G inside the Evolved E-UTRAN, is next the application solves the problems, such as when Evolved E-UTRAN is in connected state.

Method for switching network, device and the system that the application proposes, for solve UE in Evolved E-UTRAN in connected state when, the problem of how carrying out the switching between 4G and 5G inside the Evolved E-UTRAN, thus when UE is moved between 4G and 5G, it is ensured that the continuity of business.The application is with the first communication system for 4G communication system, second communication system is for 5G communication system, it is described in detail in conjunction with technical solution of the attached drawing to the application, in the embodiment of the present application, first core network element of the second communication system is AMF, second core network element of the first communication system is MME, the third core network element of second communication system is SMF, the base station of first communication system is E-UTRAN and Evolved E-UTRAN, and UE can access the first communication system or the second communication system by Evolved E-UTRAN.

It should be noted that the title of equipment, message or parameter in the application is only to describe embodiment to be used, not the function or feature of equipment, message or parameter are defined.

Before introducing each embodiment of the application, the difference of switching in switching and base station between base station is introduced first, the base station that UE is switched to the second communication system from the base station of the first communication system is switched between the base station of the prior art, switching is switching of the UE between progress 4G and 5G inside the base station Evolved E-UTRAN of 4G communication system in base station.Switching includes UE in the case where base station is constant in base station, switch between communication system, such as the switching of 4G to 5G；Or in the case where base station is constant, switch between wireless access technology (Radio access technology, RAT).

Fig. 2 is the interaction flow schematic diagram of method for switching network embodiment one provided by the present application, it is that UE initiates to request to Evolved E-UTRAN in the present embodiment, it requests to carry out the switching or conversion of 4G communication system to 5G communication system inside the Evolved E-UTRAN, as shown in Fig. 2, this method comprises:

S101, UE know that 5G communication system is supported in the base station being currently accessed.

Wherein, base station is Evolved E-UTRAN, and UE can support the instruction information of access 5G core net to know by monitoring the base station carried in the system information (SIB) that base station is sent；Alternatively, UE can support the instruction information of access 5G core net to know by receiving the base station carried in the finger wireless heterogeneous networks (Radio Resource Control, RRC) that base station is sent.

S102, request message is sent to the base station, the request message switches in base station for requesting to carry out.The request message specifically can be convert requests (switch request), carry the first information in convert requests, the first information is used to indicate to be switched in base station.Carrying out switching in base station includes, and in the case where base station is constant, switch between communication system；Alternatively, switch between RAT in the case where base station is constant；Alternatively, being switched to 5G system from 4G system in the case where base station is constant；Alternatively, being switched to 5G RAT from 4G RAT in the case where base station is constant.

It should be noted that the first information in the application, the second information hereinafter, third information, the 4th information and the 5th information etc. can be the combination of a specific parameter or multiple parameters.

S103, base station are according to request message, handover request message (Handover required) is sent to MME, the mark and third information of UE are carried in handover request message, or, the mark and the first information of UE are carried in handover request message, also carry the mark and target following area mark (Tracking area identify, TAI) of target BS.The UE is switched to the 5G communication system from the 4G communication system for knowing MME by handover request message, and the third information is used to indicate to be switched in base station.Carrying out switching in base station includes, and in the case where base station is constant, switch between communication system；Alternatively, switch between RAT in the case where base station is constant；Alternatively, being switched to 5G system from 4G system in the case where base station is constant；Alternatively, being switched to 5G RAT from 4G RAT in the case where base station is constant.

Base station specifically can send handover request message to MME according to the first information carried in request message.

Wherein, the mark of UE is the mark that the base station is UE distribution, such as C-RNTI of the UE in 4G communication system, alternatively, the mark of the UE is the mark that the MME is UE distribution.Such as S-TMSI of the UE in 4G communication system.Optionally, third information can be identical or different with the first information.

UE can carry the mark of UE in request message, and base station obtains the mark of UE from request message, and the mark of the UE obtained from request message is carried in switching request message；Alternatively, base station obtains the mark of UE, and the mark of the UE locally obtained is carried in switching request message.

Optionally, the mark and the third information of the mark of UE and the first information or UE are to be carried by source to target clear container.

It wherein, is not need to modify to MME to the benefit that target clear container carries by source, MME can be handled according to the intersystem handover flow processing of the prior art.

S104, MME determine that UE needs to carry out the switching of 4G communication system to 5G communication system according to handover request message, forward Redirection Request message (Forward relocation request) is sent to the AMF of 5G communication system, the mark of UE is carried in forward Redirection Request message, the instruction information switched in base station, the mark of target BS is used to indicate and connects context with target TAI, MM context with PDN.

S105, AMF are determined as the SMF that UE provides the second communication system of service, and send the request of PDU session establishment to SMF, carry PDN connection context in the request of PDU session establishment.

Optionally, the first information or third information are further carried.

S106, SMF determine UE PDU session (Session) context used in the second communication system according to PDN connection (connection or connectivity) context.

Optionally, PDN connection context can be sent to PCF by SMF, and PCF determines UE PDU session (Session) context used in the second communication system, and is sent to SMF.

S107, SMF send conversation establishing (Session Creation) request to UPF, establish PDU session in 5G communication system for UE.

S108, SMF return to PDU session establishment response (Session Establishment response), In to AMF PDU session context (context) is carried in the response of PDU session establishment, the rule (Rule) of (flow) is flowed in PDU session context comprising one or more service quality (Quality of Service, QoS) that SMF is UE distribution.QoS Rule includes following information: traffic flow template (Traffic Flow Template, TFT), QoS configuration (Profile), QoS Flow identify (ID), priority (Precedence).

S109, AMF send switching request (handover request) message to base station, and the mark of UE, PDU session context are carried in the switching request message and is used to indicate the instruction information switched in base station.The instruction information can be the first information or third information.

Optionally, the mark of UE and instruction information are carried by source to target clear container.

S110, base station according to switching request message determine the UE in 5G communication system used in the second information.

Wherein, second information includes that UE passes through wireless resource information used in base station access second communication system, specifically, base station according to the mark of UE and be used to indicate the instruction information switched in base station determine UE in 4G used in wireless resource information, session information of the UE in 5G is determined according to PDU session context.Base station combines the session information of UE wireless resource information used in 4G and UE in 5G to determine UE wireless resource information used in 5G.Then base station saves the mark of the UE and the corresponding relationship of the second information.Wireless resource information includes that UE passes through Data Radio Bearer (Data radio bearer, DRB) and/or Signaling Radio Bearer (Signaling radio bearer, SRB) used in the second communication system of base station access.

S111, base station send switching request acknowledgement message to AMF.

S112, AMF send PDU session modification request (Session modify request) to SMF, for establishing the tunnel for being used for transmission data between base station and UPF for UE.

S113, AMF send forward to MME and redirect response message (Forward relocation response), carry the mark of SM context and UE within the message.

S114, MME send switching command (handover command) to base station, and the mark of SM context and UE is carried in the switching command.

S115, base station determine the wireless resource information saved in S110 according to the mark of UE, and send switching command message to UE, and PDU session context is further carried in the switching command message.

S116, UE update wireless resource information according to switching command message, and reply switching to base station and complete (handover complete) message.

S117, base station send handoff completion message to AMF.

S118, AMF update SMF.

S119, UE send 5G location update message to AMF.

Method for switching network provided in this embodiment, after knowing that current base station supports 5G communication system by UE, the request for requesting switch in base station is initiated to current base station, then pass through base station and MME, Signalling exchange between AMF and SMF, it determines UE wireless resource information used in 5G communication system and saves the mark of UE and the corresponding relationship of wireless resource information in base station, after MME sends switching command to base station, base station determines UE wireless resource information used in 5G communication system according to the mark of UE, and switching command message is sent to UE, last UE updates wireless resource information according to switching command message, switching is completed.To realize UE when Evolved E-UTRAN is in connected state, the switching between 4G and 5G is carried out inside the Evolved E-UTRAN, when UE is moved between 4G and 5G, it is ensured that the continuity of business.

Fig. 3 is the interaction flow schematic diagram of method for switching network embodiment two provided by the present application, be UE in the present embodiment to The core network element MME being currently located initiates request, requests to carry out the switching or conversion of 4G communication system to 5G communication system inside Evolved E-UTRAN, as shown in figure 3, this method comprises:

S201, UE know that 5G communication system is supported in the base station being currently accessed.

Specifically identical as S101 shown in Fig. 2, details are not described herein again.

S202, UE send RAT conversion requests (RAT change request) or tracing section updating (Tracking Area Update to MME by the base station, TAU it) requests, RAT conversion requests or TAU request switch in base station for requesting to carry out.Carrying out switching in base station includes, and in the case where base station is constant, switch between communication system；Alternatively, switch between RAT in the case where base station is constant.

The mark and the 5th information of UE can be carried in request, the 5th information is used to indicate to be switched in base station.

S203, MME determine the AMF of the second communication system, MME determines that UE needs to carry out the switching of the first communication system to the second communication system according to the first information, forward Redirection Request message (Forward relocation request) is sent to AMF, the mark of UE is carried in forward Redirection Request message, is used to indicate the instruction information switched in base station, the mark of target BS and target TAI, mobile management (Mobility Management, MM) context and is connected context with PDN.

The step of S204~S207 is with S105~S108 shown in Fig. 2 is identical, and details are not described herein again.

S208, AMF send switching request (handover request) message to base station, and mark, PDU session context, the first information and the SM context of UE are carried in the switching request message.

Wherein, AMF determines base station according to the mark of target BS in S203.

S209, base station determine the UE second information used in the 5G communication system according to switching request message.

Wherein, second information includes that UE passes through wireless resource information used in the base station access 5G communication system, specifically, base station according to the mark of UE and the first information determine UE in 4G used in wireless resource information, session information of the UE in 5G is determined according to PDU session context.Base station combines the session information of UE wireless resource information used in 4G and UE in 5G to determine UE wireless resource information used in 5G.

S210, base station send switching command message to UE, and the wireless resource information that S209 is determined is carried in the switching command message, can also carry PDU session context in the switching command message.The information of the one or more QoS flow used in 5G in PDU session context comprising UE, the QoS including the flow, flow ID, TFT, the information such as priority.When UE has upstream data transmission, correct QoS flow can be selected to be transmitted according to PDU session context.

Following same S116~S119.Details are not described herein again.

Method for switching network provided in this embodiment, after knowing that current base station supports 5G communication system by UE, it initiates to carry the request for being used to indicate the message switched in base station to MME, then pass through the Signalling exchange between base station and MME, AMF and SMF, determine UE wireless resource information used in 5G communication system in base station, and switching command message is sent to UE, last UE updates wireless resource information according to switching command message, and switching is completed.To realize UE when Evolved E-UTRAN is in connected state, the switching between 4G and 5G is carried out inside the Evolved E-UTRAN, when UE is moved between 4G and 5G, it is ensured that the continuity of business.

Fig. 4 is the interaction flow schematic diagram of method for switching network embodiment three provided by the present application, it is that UE initiates to request to target core network element AMF in the present embodiment, it requests to carry out the switching or conversion of 4G communication system to 5G communication system inside Evolved E-UTRAN, as shown in figure 4, this method comprises:

S301, UE know that 5G communication system is supported in the base station being currently accessed.

S302, UE send wireless heterogeneous networks (Radio Resource Control to base station, RRC) message, include in RRC information 5G instruction message (indication), it include 5G mobility registration update message in RRC information, the unique interim UE in mark, the 4th information and the 5G whole world that 5G mobility registration update message carries UE identifies (Globally Unique Temporary UE Identity, GUTI), the 4th information is used to indicate switches in base station.5G mobility registration update message specifically can be registration (registration) message for carrying mobility registration update message (mobility registration update) instruction.The 5G GUTI can be what UE was obtained according to 4G GUTI mapping.

5G mobility registration update message in RRC information is sent to AMF according to the 5G instruction message in radio resource control information by S303, base station.5G mobility registration update message carries out location updating for UE request, or carries out mobile register update for UE request.

S304, AMF obtain the contextual information of UE to MME.

UE can be mapped according to 5G GUTI obtains 4G GUTI, carries the 4G GUTI in the message that AMF is sent to MME.

The step of S305~S308 is with S105~S108 shown in Fig. 2 is identical, and details are not described herein again.

The step of S309~S311 is with S208~S210 shown in Fig. 3 is identical, and details are not described herein again.

Following same S116~S118.Details are not described herein again.

Method for switching network provided in this embodiment, after knowing that current base station supports 5G communication system by UE, it initiates to carry the request for being used to indicate the message switched in base station to AMF by base station, then pass through the Signalling exchange between base station and MME, AMF and SMF, determine UE wireless resource information used in 5G communication system in base station, and switching command message is sent to UE, last UE updates wireless resource information according to switching command message, and switching is completed.To realize UE when Evolved E-UTRAN is in connected state, the switching between 4G and 5G is carried out inside the Evolved E-UTRAN, when UE is moved between 4G and 5G, it is ensured that the continuity of business.

Two or more functions can also be integrated in a processing module UE and the base station division for carrying out functional module for example, each functional module of each function division can be corresponded to according to above method example by the application.Above-mentioned integrated module both can take the form of hardware realization, can also be realized in the form of software function module.It should be noted that being schematically that only a kind of logical function partition, there may be another division manner in actual implementation to the division of module in each embodiment of the application.

Fig. 5 is the structural schematic diagram of the application UE embodiment one, as shown in Figure 5, the device of the present embodiment may include: sending module 21, receiving module 22 and processing module 23, processing module 23 is used to access the first communication system by base station, know that the second communication system is supported in the base station, after transmitter 41 is used to know that the second communication system is supported in base station by the SIB message for monitoring base station transmission, first message is sent to base station, the first information is carried in first message, the first information is used to indicate to be switched in base station；Receiving module 22 is used to receive the second message of base station transmission, carries UE second information used in the second communication system in second message；Processing module 23 is also used for second the second communication system of information access.Wherein, the version of the second communication system is higher than first communication system.

Optionally, first message is switched to the second communication system from the first communication system for requesting, so that base station sends third message to the second core network element of the first communication system, the mark and third information of UE are carried in third message, UE is switched to the second communication system from the first communication system for knowing the second core network element by third message, and third information is used to indicate to be switched in base station.

Optionally, first message is switched to the second communication system from the first communication system for requesting, so that base station sends third message to the second core network element of the first communication system, the mark and the first information of UE is carried in third message, third disappears UE is switched to the second communication system from the first communication system for knowing the second core network element by breath.

Optionally, the mark of UE and the first information are to be carried by source to target clear container.

Wherein, optionally, processing module 23 is specifically used for: monitoring the instruction information carried in the system information that the base station is sent and knows that second communication system is supported in the base station；Alternatively, the receiving module 22 is also used to receive the instruction information that the base station is sent, the processing module 23 is specifically used for knowing that second communication system is supported in the base station according to the instruction information.

Further, the 4th message sent comprising UE to the first core network element in first message, so that base station sends the 4th message to the first core network element, the mark and the 4th information of 4th message carrying UE, 4th information is used to indicate to be switched in base station, 4th message carries out location updating or the 4th message for UE request and carries out mobile register update for UE request.

Further, the 5th message sent comprising UE to the second core network element in first message, so that base station sends the 5th message to the first core network element, the mark and the 5th information of 5th message carrying UE, 5th information is used to indicate to be switched in base station, and the 5th message carries out location updating for UE request.

Wherein, the second information includes: that UE passes through wireless resource information used in the second communication system of base station access.The mark of UE is the mark that base station is UE distribution, alternatively, the mark of UE is the mark that the second core network element is UE distribution.

The user equipment of the present embodiment can be used for executing the technical solution of any shown embodiment of the method for Fig. 4-Fig. 6, and it is similar that the realization principle and technical effect are similar, and details are not described herein again.

Fig. 6 is the structural schematic diagram of the application base station embodiment one, as shown in Figure 6, the base station of the present embodiment may include: receiving module 31, processing module 32 and sending module 33, wherein, receiving module 31 is used to receive the first message that the first core network element of the second communication system is sent, user equipment (UE) is switched to the second communication system from the first communication system for requesting by first message, the mark and the first information of UE is carried in first message, the first information is used to indicate to be switched in base station；Processing module 32 be used for according to first condition determine UE in the second communication system used in the second information, first condition includes the mark and the first information of UE；Sending module 33 is used to send second message to UE, carries the second information in second message.

Wherein, the version of the second communication system is higher than the first communication system.

Optionally, receiving module 31 is also used to: before the first message that the first core network element for receiving the second communication system is sent, receiving the third message that UE is sent, third message is switched to the second communication system from the first communication system for requesting.Sending module 33 is also used to: sending the 4th message to the second core network element of the first communication system, the mark and third information of UE are carried in 4th message, UE is switched to the second communication system from the first communication system for knowing the second core network element by the 4th message, and third information is used to indicate to be switched in base station.

Optionally, receiving module 31 is also used to: before the first message of the first core network element transmission for receiving the second communication system, receiving the third message that UE is sent, third message is switched to the second communication system from the first communication system for requesting.Sending module 33 is also used to: sending the 4th message to the second core network element of the first communication system, the mark and the first information of UE are carried in 4th message, UE is switched to the second communication system from the first communication system for knowing the second core network element by the 4th message.

Wherein, the mark of UE and the first information are to be carried by source to target clear container.

Optionally, processing module 32 is also used to: before sending module 33 sends second message to UE, saving the mark of UE and the corresponding relationship of the second information；Sending module 33 is also used to send the confirmation message of first message to the first core network element；Receiving module 31 is also used to receive the 5th message of the second core network element transmission, carries UE's in the 5th message Mark, sending module 33 is also used to obtain the second information according to the mark and corresponding relationship of UE, and sends the second information to UE；Or, receiving module 31 is also used to receive the 5th message of the second core network element transmission, the mark and protocol Data Unit PDU session context of UE are carried in 5th message, sending module 33 is also used to obtain the second information according to the mark and corresponding relationship of UE, and sends the second information and PDU session context to UE.

Optionally, receiving module 31 is also used to: before the first message that the first core network element for receiving the second communication system is sent, receive the 6th message that UE is sent, the 7th message sent comprising UE to the first core network element in 6th message, 7th message carries the mark and the 4th information of UE, and the 4th information is used to indicate to be switched in base station；Sending module 33 is also used to send the 7th message to the first core network element, and the 7th message carries out location updating or the 7th message for UE request and carries out mobile register update for UE request.

Optionally, receiving module 31 is also used to: before the first message that the first core network element for receiving the second communication system is sent, receive the 8th message that UE is sent, the 9th message sent comprising UE to the second core network element in 8th message, 9th message carries the mark and the 4th information of UE, and the 4th information is used to indicate to be switched in base station；Sending module 33 is also used to send the 9th message to the first core network element, and the 9th message carries out tracing section updating for UE request.

Further, the first information further includes PDU session context, processing module 32 is specifically used for: obtaining UE in the wireless resource information of the first communication system according to first condition, and the wireless resource information based on the first communication system and PDU session context generate the second information.

The base station of the present embodiment can be used for executing the technical solution of any shown embodiment of the method for Fig. 2-Fig. 4, and it is similar that the realization principle and technical effect are similar, and details are not described herein again.

Communication system provided by the present application, including UE shown in fig. 5 and base station shown in fig. 6.

Fig. 7 is the structural schematic diagram of the application UE embodiment two, as shown in Figure 7, the device of the present embodiment may include: transmitter 41, receiver 42 and processor 43, processor 43 is used to access the first communication system by base station, know that the second communication system is supported in the base station, after transmitter 41 is used to know that the second communication system is supported in base station by the SIB message for monitoring base station transmission, first message is sent to base station, the first information is carried in first message, the first information is used to indicate to be switched in base station；Receiver 42 is used to receive the second message of base station transmission, carries UE second information used in the second communication system in second message；Processor 43 is also used for second the second communication system of information access.Wherein, the version of the second communication system is higher than first communication system.

Optionally, first message is switched to the second communication system from the first communication system for requesting, so that base station sends third message to the second core network element of the first communication system, the mark and the first information of UE are carried in third message, UE is switched to the second communication system from the first communication system for knowing the second core network element by third message.

Wherein, optionally, processor 43 is specifically used for: monitoring the instruction information carried in the system information that the base station is sent and knows that second communication system is supported in the base station；Alternatively, the receiver 42 is also used to receive the instruction information that the base station is sent, the processor 43 is specifically used for knowing that second communication is supported in the base station according to the instruction information System.

Further, the 4th message sent comprising UE to the first core network element in first message, the mark and the 4th information of 4th message carrying UE, 4th information is used to indicate to be switched in base station, so that base station sends the 4th message to the first core network element, 4th message carries out location updating or the 4th message for UE request and carries out mobile register update for UE request.

Further, the 5th message sent comprising UE to the second core network element in first message, the mark and the 5th information of 5th message carrying UE, 5th information is used to indicate to be switched in base station, so that base station sends the 5th message to the first core network element, the 5th message carries out location updating for UE request.

The user equipment of the present embodiment can be used for executing the technical solution of any shown embodiment of the method for Fig. 2-Fig. 4, and it is similar that the realization principle and technical effect are similar, and details are not described herein again.

Fig. 8 is the structural schematic diagram of the application base station embodiment two, as shown in Figure 8, the base station of the present embodiment may include: receiver 51, processor 52 and transmitter 53, wherein, receiver 51 is used to receive the first message that the first core network element of the second communication system is sent, user equipment (UE) is switched to the second communication system from the first communication system for requesting by first message, the mark and the first information of UE is carried in first message, the first information is used to indicate to be switched in base station；Processor 52 be used for according to first condition determine UE in the second communication system used in the second information, first condition includes the mark and the first information of UE；Transmitter 53 is used to send second message to UE, carries the second information in second message.

Optionally, receiver 51 is also used to: before the first message that the first core network element for receiving the second communication system is sent, receiving the third message that UE is sent, third message is switched to the second communication system from the first communication system for requesting.Transmitter 53 is also used to: sending the 4th message to the second core network element of the first communication system, the mark and third information of UE are carried in 4th message, UE is switched to the second communication system from the first communication system for knowing the second core network element by the 4th message, and third information is used to indicate to be switched in base station.

Optionally, receiver 51 is also used to: before the first message of the first core network element transmission for receiving the second communication system, receiving the third message that UE is sent, third message is switched to the second communication system from the first communication system for requesting.Transmitter 53 is also used to: sending the 4th message to the second core network element of the first communication system, the mark and the first information of UE are carried in 4th message, UE is switched to the second communication system from the first communication system for knowing the second core network element by the 4th message.

Optionally, processor 52 is also used to: before transmitter 53 sends second message to UE, saving the mark of UE and the corresponding relationship of the second information；Transmitter 53 is also used to send the confirmation message of first message to the first core network element；Receiver 51 is also used to receive the 5th message of the second core network element transmission, the mark of UE is carried in the 5th message, transmitter 53 is also used to obtain the second information according to the mark and corresponding relationship of UE, and sends the second information to UE；Or, receiver 51 is also used to receive the 5th message of the second core network element transmission, the mark and protocol Data Unit PDU session context of UE are carried in 5th message, transmitter 53 is also used to obtain the second information according to the mark and corresponding relationship of UE, and sends the second information and PDU session context to UE.

Optionally, receiver 51 is also used to: in the first message that the first core network element for receiving the second communication system is sent Before, the 6th message that UE is sent, the 7th message sent comprising UE to the first core network element in the 6th message are received, the 7th message carries the mark and the 4th information of UE, and the 4th information is used to indicate to be switched in base station；Transmitter 53 is also used to send the 7th message to the first core network element, and the 7th message carries out location updating or the 7th message for UE request and carries out mobile register update for UE request.

Optionally, receiver 51 is also used to: before the first message that the first core network element for receiving the second communication system is sent, receive the 8th message that UE is sent, the 9th message sent comprising UE to the second core network element in 8th message, 9th message carries the mark and the 4th information of UE, and the 4th information is used to indicate to be switched in base station；Transmitter 53 is also used to send the 9th message to the first core network element, and the 9th message carries out tracing section updating for UE request.

Further, the first information further includes PDU session context, processor 52 is specifically used for: obtaining UE in the wireless resource information of the first communication system according to first condition, and the wireless resource information based on the first communication system and PDU session context generate the second information.

Communication system provided by the present application, including UE shown in Fig. 7 and base station shown in Fig. 8.

All the embodiments in this specification are described in a progressive manner, and the same or similar parts between the embodiments can be referred to each other, and each embodiment focuses on the differences from other embodiments.For apparatus and system embodiment, since it is substantially similar to the method embodiment, so being described relatively simple, the relevent part can refer to the partial explaination of embodiments of method.

It will be recognized by those of ordinary skill in the art that the various aspects of the application or the possibility implementation of various aspects can be embodied as system, method or computer program product.Therefore, the various aspects of the application or the possibility implementation of various aspects can use complete hardware embodiment, complete software embodiment (including firmware, resident software etc.), perhaps the form of the embodiment of integration software and hardware aspect collectively referred to herein as " circuit ", " module " or " system ".In addition, the various aspects of the application or the possibility implementation of various aspects can use the form of computer program product, computer program product refers to the computer readable program code of storage in computer-readable medium.

Computer-readable medium can be computer-readable signal media or computer readable storage medium.Computer readable storage medium is including but not limited to electronics, magnetism, optics, electromagnetism, infrared or semiconductor system, equipment or device, perhaps above-mentioned any appropriately combined such as random access memory (RAM), read-only memory (ROM), Erasable Programmable Read Only Memory EPROM (EPROM or flash memory), optical fiber, portable read-only memory (CD-ROM).

Processor in computer reads the computer readable program code of storage in computer-readable medium, enables a processor to execute function action specified in the combination of each step or each step in flow charts；Generate the device for implementing defined function action in each block of the block diagram, or a combination of blocks.

Computer readable program code can execute completely on the local computer of user, partially execute on the local computer of user, as individual software package, partially on the local computer of user and part on the remote computer, or execute on a remote computer or server completely.It is also noted that in some alternative embodiments, each piece of function of indicating may not be occurred by the sequence indicated in figure in each step or block diagram in flow charts.For example, Dependent on related function, two steps or two blocks shown in succession may be actually executed substantially concurrently or these blocks may be sometimes performed with reverse order.

Claims

A kind of method for switching network characterized by comprising

User equipment (UE) accesses the first communication system by base station, and after the UE knows that the second communication system is supported in the base station, the base station Xiang Suoshu sends first message, carries the first information in the first message, the first information is used to indicate to be switched in base station；

The UE receives the second message that the base station is sent, and carries the UE second information used in the second communication system in the second message；

The UE uses the second communication system described in second information access.
The method according to claim 1, wherein the version of second communication system is higher than first communication system.
According to the method for claim 1, it is characterized in that, the first message is switched to second communication system from the first communication system for requesting, so that the base station sends third message to the second core network element of first communication system, the mark and third information of the UE are carried in the third message, the UE is switched to second communication system from first communication system for knowing second core network element by the third message, and the third information is used to indicate to be switched in base station.
According to the method for claim 1, it is characterized in that, the first message is switched to second communication system from first communication system for requesting, so that the base station sends third message to the second core network element of first communication system, the UE is switched to second communication system from first communication system for knowing second core network element by the mark and the first information, the third message that the UE is carried in the third message.
Method according to claim 1 or 4, which is characterized in that mark and the first information of the UE is to be carried by source to target clear container.
The method according to claim 1, wherein the UE knows that the second communication system is supported in the base station, comprising:

The UE, which monitors the instruction information carried in the system information that the base station is sent, knows that second communication system is supported in the base station；Alternatively,

The UE receives the instruction information that the base station is sent, and knows that second communication system is supported in the base station according to the instruction information.
According to the method for claim 1, it is characterized in that, the 4th message sent comprising the UE to first core network element in the first message, so that the base station sends the 4th message to first core network element, 4th message carries the mark and the 4th information of the UE, 4th information is used to indicate to be switched in the base station, 4th message carries out location updating or the 4th message for UE request and carries out mobile register update for UE request.
According to the method for claim 1, it is characterized in that, the 5th message sent comprising the UE to second core network element in the first message, so that the base station sends the 5th message to first core network element, 5th message carries the mark and the 5th information of the UE, 5th information is used to indicate to be switched in the base station, and the 5th message carries out tracing section updating for UE request.
Described in any item methods according to claim 1~8, which is characterized in that second information includes:

The UE accesses wireless resource information used in second communication system by the base station.
Described in any item methods according to claim 1~9, which is characterized in that the mark of the UE is the base station For the UE distribution mark, alternatively, the mark of the UE be second core network element be the UE distribution mark.
A kind of method for switching network characterized by comprising

Base station receives the first message that the first core network element of the second communication system is sent, user equipment (UE) is switched to second communication system from the first communication system for requesting by the first message, the mark and the second information of the UE are carried in the first message, second information is used to indicate to be switched in base station；

The base station determines that UE first information used in second communication system, the first condition include the mark and second information of the UE according to the first condition；

The base station sends second message to the UE, carries the first information in the second message.
According to the method for claim 11, which is characterized in that the version of second communication system is higher than first communication system.
According to the method for claim 11, which is characterized in that before the first message that the first core network element that the base station receives the second communication system is sent, further includes:

The base station receives the third message that the UE is sent, and the third message switches in base station for requesting；

The base station sends the 4th message to the second core network element of first communication system, the mark and third information of the UE are carried in 4th message, the UE is switched to second communication system from first communication system for knowing second core network element by the 4th message, and the third information is used to indicate to be switched in base station.
According to the method for claim 11, which is characterized in that before the first message that the first core network element that the base station receives the second communication system is sent, further includes:

The base station receives the third message that the UE is sent, and the third message is switched to second communication system from first communication system for requesting；

The base station sends the 4th message to the second core network element of first communication system, the UE is switched to second communication system from first communication system for knowing second core network element by the mark and the first information, the 4th message that the UE is carried in the 4th message.
Method described in 1 or 14 according to claim 1, which is characterized in that mark and the first information of the UE is to be carried by source to target clear container.
1 to 15 described in any item methods according to claim 1, which is characterized in that the base station is sent to the UE before second message, further includes:

The base station saves the mark of the UE and the corresponding relationship of second information；

The base station sends the confirmation message of the first message to first core network element；

The base station receives the 5th message that second core network element is sent, and the mark of the UE is carried in the 5th message, the base station obtains second information according to the mark of the UE and the corresponding relationship, and sends second information to the UE；Or, the base station receives the 5th message that second core network element is sent, the mark and protocol Data Unit PDU session context of the UE are carried in 5th message, the base station obtains second information according to the mark of the UE and the corresponding relationship, and sends second information and the PDU session context to the UE.
According to the method for claim 11, which is characterized in that before the first message that the first core network element that the base station receives second communication system is sent, further includes:

The base station receives the 6th message that the UE is sent, comprising the UE to first core in the 6th message The 7th message that heart network element is sent, the 7th message carry the mark and the 4th information of the UE, and the 4th information is used to indicate to be switched in the base station；

The base station sends the 7th message to first core network element, and the 7th message carries out location updating or the 7th message for UE request and carries out mobile register update for UE request.
According to the method for claim 11, which is characterized in that before the first message that the first core network element that the base station receives second communication system is sent, further includes:

The base station receives the 8th message that the UE is sent, the 9th message sent comprising the UE to second core network element in 8th message, 9th message carries the mark and the 4th information of the UE, and the 4th information is used to indicate to be switched in the base station；

The base station sends the 9th message to first core network element, and the 9th message carries out tracing section updating for UE request.
1 to 18 described in any item methods according to claim 1, which is characterized in that the first information further includes PDU session context, and the base station determines the UE second information used in second communication system according to the first condition, comprising:

The base station obtains the UE in the wireless resource information of first communication system according to the first condition, and wireless resource information and the PDU session context of the base station based on first communication system generate second information.
1~19 described in any item methods according to claim 1, which is characterized in that second information includes:

The UE accesses wireless resource information used in second communication system by the base station.
1~19 described in any item methods according to claim 1, which is characterized in that the mark of the UE is the mark that the base station is UE distribution, alternatively, the mark of the UE is the mark that second core network element is UE distribution.
A kind of user equipment characterized by comprising

Processing module knows that the second communication system is supported in the base station for accessing the first communication system by base station；

Sending module carries the first information in the first message, the first information is used to indicate to be switched in base station for sending first message to the base station；

Receiving module carries the UE second information used in the second communication system in the second message for receiving the second message of the base station transmission；

The processing module is also used for the second communication system described in second information access.
User equipment according to claim 22, which is characterized in that the version of second communication system is higher than first communication system.
User equipment according to claim 22, it is characterized in that, the first message is switched to second communication system from the first communication system for requesting, so that the base station sends third message to the second core network element of first communication system, the mark and third information of the UE are carried in the third message, the UE is switched to second communication system from first communication system for knowing second core network element by the third message, and the third information is used to indicate to be switched in base station.
User equipment according to claim 22, it is characterized in that, the first message is switched to second communication system from first communication system for requesting, so that the base station sends third message to the second core network element of first communication system, the UE is switched to second communication system from first communication system for knowing second core network element by the mark and the first information, the third message that the UE is carried in the third message System.
The user equipment according to claim 22 or 25, which is characterized in that mark and the first information of the UE is to be carried by source to target clear container.
The user equipment according to claim 23 or 25, which is characterized in that the processing module is specifically used for:

It monitors the instruction information carried in the system information that the base station is sent and knows that second communication system is supported in the base station；Alternatively,

The receiving module is also used to receive the instruction information that the base station is sent, and the processing module is specifically used for knowing that second communication system is supported in the base station according to the instruction information.
User equipment according to claim 22, it is characterized in that, the 4th message sent comprising the UE to first core network element in the first message, so that the base station sends the 4th message to first core network element, 4th message carries the mark and the 4th information of the UE, 4th information is used to indicate to be switched in the base station, 4th message carries out location updating or the 4th message for UE request and carries out mobile register update for UE request.
User equipment according to claim 22, it is characterized in that, the 5th message sent comprising the UE to second core network element in the first message, so that the base station sends the 5th message to first core network element, 5th message carries the mark and the 5th information of the UE, 5th information is used to indicate to be switched in the base station, and the 5th message carries out tracing section updating for UE request.
According to the described in any item user equipmenies of claim 22~29, which is characterized in that second information includes:

The UE accesses wireless resource information used in second communication system by the base station.
According to the described in any item user equipmenies of claim 22~30, which is characterized in that the mark of the UE is the mark that the base station is UE distribution, alternatively, the mark of the UE is the mark that second core network element is UE distribution.
A kind of base station characterized by comprising

Receiving module, the first message that the first core network element for receiving the second communication system is sent, user equipment (UE) is switched to second communication system from the first communication system for requesting by the first message, the mark and the first information of the UE are carried in the first message, the first information is used to indicate to be switched in base station；

Processing module, for determining the UE second information used in second communication system according to the first condition, the first condition include the UE mark and the first information；

Sending module carries second information in the second message for sending second message to the UE.
Base station according to claim 32, which is characterized in that the version of second communication system is higher than first communication system.
Base station according to claim 32, which is characterized in that the receiving module is also used to:

Before the first message that the first core network element for receiving the second communication system is sent, the third message that the UE is sent is received, the third message is switched to second communication system from first communication system for requesting；

The sending module is also used to: the second core network element of the first communication system of Xiang Suoshu sends the 4th message, the mark and third information of the UE are carried in 4th message, the UE is switched to second communication system from first communication system for knowing second core network element by the 4th message, and the third information is used to indicate to be switched in base station.
Base station according to claim 32, which is characterized in that the receiving module is also used to:

Before the first message of the first core network element transmission for receiving the second communication system, the third message that the UE is sent is received, the third message is switched to second communication system from first communication system for requesting；

The sending module is also used to: the second core network element of the first communication system of Xiang Suoshu sends the 4th message, the UE is switched to second communication system from first communication system for knowing second core network element by the mark and the first information, the 4th message that the UE is carried in the 4th message.
The base station according to claim 32 or 35, which is characterized in that mark and the first information of the UE is to be carried by source to target clear container.
According to the described in any item base stations of claim 32 to 36, which is characterized in that the processing module is also used to:

Before the sending module sends second message to the UE, the mark of the UE and the corresponding relationship of second information are saved；

The sending module is also used to send the confirmation message of the first message to first core network element；

The receiving module is also used to receive the 5th message that second core network element is sent, the mark of the UE is carried in 5th message, the sending module is also used to obtain second information according to the mark of the UE and the corresponding relationship, and sends second information to the UE；Or, the receiving module is also used to receive the 5th message that second core network element is sent, the mark and protocol Data Unit PDU session context of the UE are carried in 5th message, the sending module is also used to obtain second information according to the mark of the UE and the corresponding relationship, and sends second information and the PDU session context to the UE.
Base station according to claim 32, which is characterized in that the receiving module is also used to:

Before the first message that the first core network element for receiving second communication system is sent, receive the 6th message that the UE is sent, the 7th message sent comprising the UE to first core network element in 6th message, 7th message carries the mark and the 4th information of the UE, and the 4th information is used to indicate to be switched in the base station；

The sending module is also used to send the 7th message to first core network element, and the 7th message carries out location updating or the 7th message for UE request and carries out mobile register update for UE request.
Base station according to claim 32, which is characterized in that the receiving module is also used to:

Before the first message that the first core network element for receiving second communication system is sent, receive the 8th message that the UE is sent, the 9th message sent comprising the UE to second core network element in 8th message, 9th message carries the mark and the 4th information of the UE, and the 4th information is used to indicate to be switched in the base station；

The sending module is also used to send the 9th message to first core network element, and the 9th message carries out tracing section updating for UE request.
According to the described in any item base stations of claim 32 to 39, which is characterized in that the first information further includes PDU session context, and the processing module is specifically used for:

The UE is obtained in the wireless resource information of first communication system according to the first condition, and the wireless resource information based on first communication system and the PDU session context generate second information.
According to the described in any item base stations of claim 32~40, which is characterized in that second information includes:

The UE accesses wireless resource information used in second communication system by the base station.
According to the described in any item base stations of claim 32~40, which is characterized in that the mark of the UE is the mark that the base station is UE distribution, alternatively, the mark of the UE is the mark that second core network element is UE distribution.
A kind of communication system, which is characterized in that including the described in any item user equipmenies of claim 22~31 and the described in any item base stations of claim 32~42.