WO2016188360A1

WO2016188360A1 - Switching method and system of dual-connection system supporting closed subscriber group

Info

Publication number: WO2016188360A1
Application number: PCT/CN2016/082644
Authority: WO
Inventors: 黄莹; 高音; 吴蕴璐
Original assignee: 中兴通讯股份有限公司
Priority date: 2015-05-22
Filing date: 2016-05-19
Publication date: 2016-12-01
Also published as: CN106304060B; CN106304060A

Abstract

A switching method of a dual-connection system supporting a closed subscriber group (CSG). The method comprises: transmitting, by a first eNB accessed by a user equipment (UE), to a second eNB a switching request message comprising related information of the UE in the first eNB and/or a third eNB, the switching request message being configured for the second eNB to determine whether the UE is allowed to access a fourth eNB and/or is allowed to access the fourth eNB as a CSG member or a non-CSG member.

Description

Switching method and system in dual connection system supporting closed member group

Technical field

The present application relates to, but is not limited to, the field of wireless communication technologies, and in particular, to a handover method and system in a dual connectivity system supporting a Closed Subscriber Group (CSG).

Background technique

With the development of wireless multimedia services, people's demand for high data rates and user experience is increasing, which puts high demands on the system capacity and coverage of traditional cellular networks. In a traditional Long Term Evolution (LTE) cellular network, the macro base station provides an access service for the user equipment (UE, User Equipment) as the only access side network element. In order to meet the user's demand for higher data rates and improve the spectrum efficiency of the cellular network, the Third Generation Partnership Project (3GPP) introduced a low power node (LPN, Low Power Node) as a supplement to the macro base station. The UE provides an access service. The LPN has the features of low-cost, low-power, and easy-to-deploy. It usually has two deployment scenarios: hotspot deployment and enhanced coverage. It can effectively improve the data rate of high-speed data services in indoor or outdoor hotspots and improve remote areas or cell edge coverage. Generally, the LPN may also be referred to as a small base station, including a home base station (HeNB, a home eNB), a pico base station, a radio remote unit (RRU), and a remote radio head (RRH). Following node (RN, Relay Node) and so on. In a hotspot deployment scenario, in order to achieve high data rates and spectrum efficiency, a large number of small base stations need to be densely deployed in the area. However, since the coverage of the small cell under the small base station is small, the probability of a handover failure occurs when the medium and high speed mobile UE passes through the small base station, which affects the service continuity of the UE. In order to improve the UE mobile performance after the introduction of the small cell, the industry proposes to ensure basic coverage by a certain base station (such as a macro base station), and the UE always maintains a radio resource control (RRC) connection with the base station, and the small cell only performs It is a Transmission Point (TP) to provide higher data rates and meet user power saving needs. In this system architecture, the UE maintains a connection with at least two base stations and uses radio resources under two base stations to implement wireless resource aggregation across nodes. This architecture is generally referred to as a dual connectivity architecture, as shown in FIG. The two base stations connected by the UE have a certain management control capability, which is usually called a primary base station (MeNB, master eNB), and the other base station is called a secondary base station (SeNB, Secondary eNB). After the UE accesses the MeNB, the dual connection can be implemented through the SeNB adding procedure. After the SeNB is successfully added, the SeNB can perform a series of management, such as SeNB modification, SeNB deletion, and SeNB modification.

Currently, dual connectivity can be implemented in a 1A architecture or a 3C architecture. In the architecture 1A, the S1-U is terminated by the MeNB and the SeNB, and the user plane protocol stack on the SeNB has a separate Packet Data Convergence Protocol (PDCP) and the following protocol layers, and no bearer separation. In the architecture 3C, the S1-U terminates in the MeNB, and the radio access network (RAN, Radio Access Network) side has a bearer separation. For example, the downlink data in the Evolved Packet System (EPS) bearer can reach a bearer after reaching the MeNB. The part of the data is separated into the SeNB, and then sent by the SeNB to the UE, and the user plane protocol stack on the SeNB has an independent Radio Link Control (RLC) protocol layer and the following protocol layers.

On the other hand, under the dual connectivity architecture, it is possible to use the HeNB as the SeNB. Since the HeNB only needs to provide services for specific users, the CSG concept is introduced, and each CSG has a unique identifier, that is, a CSG ID. In the LTE, three different access modes are defined for the HeNB: a CSG cell (corresponding to the closed mode HeNB, only the UE registered as a CSG member can access), and a hybrid cell (corresponding to the hybrid mode HeNB, any terminal can access, However, a UE registered as a CSG member can access with a higher priority member, and an Open cell (corresponding to an open mode HeNB, which can be accessed by any UE). Here, the closed mode refers to the closed mode, the hybrid mode refers to the mixed mode, and the open mode refers to the open mode. For the hybrid cell, it is determined whether the UE is a member of the user group identified by the CSG ID, to determine whether the UE accesses the hybrid cell as a member or a non-member, and the base station performs corresponding admission control or rate control for different memberships; The CSG cell needs to determine whether the UE is a member of the user group identified by the CSG ID to determine whether the UE can access the CSG cell. In a dual connectivity system, the UE may switch from a single connection to a dual connection, or a dual connection to a dual connection (MeNB change), and there may be a scenario where the HeNB acts as a single-link base station or HeNB as a SeNB in dual connectivity.

However, in the related art, there is no solution for CSG access control or identity verification of handover scenarios in the above dual connectivity system.

Summary of the invention

The following is an overview of the topics detailed in this document. This Summary is not intended to limit the scope of the claims.

Embodiments of the present invention provide a handover method and system in a dual connectivity system supporting a closed member group (CSG), which implements at least CSG access control or identity verification of a handover scenario in a dual connectivity system.

An embodiment of the present invention provides a handover method in a dual connectivity system supporting a closed member group, where the method includes:

The first base station that is accessed by the user equipment (UE) sends a handover request message including information about the UE under the first base station and/or the third base station to the second base station;

The handover request message is used by the second base station to determine whether the UE is allowed to access the fourth base station and/or access the fourth base station as a CSG member or a non-CSG member.

In the above solution, the method further includes:

The UE accesses only the first base station by using a single connection manner;

The first base station is a hybrid base station or a closed base mode or an open base mode base station or macro base station.

In the above solution, the method further includes:

The UE accesses the first base station and the third base station simultaneously through a dual connectivity manner;

The first base station is a primary base station (MeNB), and the third base station is a secondary base station;

The third base station is a home base station or a macro base station in a hybrid mode or a closed mode or an open mode.

In the foregoing solution, the handover request message includes measurement report information, where the measurement report information is information reported by the UE to the first base station, and includes one or a combination of the following:

Cell identification information of a neighboring cell;

CSG ID information of the neighboring cell;

Member status information of the UE in the neighboring cell;

Public land mobile network (PLMN, Public Land Mobile Network) list information of the neighboring cell through CSG verification and access verification;

Whether the primary PLMN of the neighboring cell passes the indication information of the CSG authentication and access authentication.

In the above solution, the related information of the UE under the first base station and/or the third base station includes one or a combination of the following:

CSG ID information of the first base station and/or the third base station;

Access mode information of the first base station and/or the third base station lower cell; the access mode information includes: a hybrid mode or a closed mode;

Member status information verified by the UE under the first base station and/or the third base station by a Mobility Management Entity (MME); the member status information includes: a member or a non-member;

Serving PLMN information of the UE under the first base station or the third base station;

The PLMN list information reported by the UE and verified by the UE local CSG and the access authentication under the first base station and/or the third base station;

The indication information reported by the UE whether the primary PLMN passes the UE local CSG authentication and access authentication at the first base station and/or the third base station;

Whether an indication of authentication or access control needs to be performed through the path transfer process.

Receiving, by the second base station, a handover request message sent by the first base station that is accessed by the UE, where the handover request message includes related information of the UE under the first base station and/or the third base station;

The second base station determines, according to the handover request message, whether the UE is allowed to access the fourth base station and/or accesses the fourth base station as a CSG member or a non-CSG member.

In the above solution, the method further includes:

After receiving the handover request message, the second base station selects a secondary base station that is accessed after handover.

In the above solution, the selecting a secondary base station that is accessed after the handover is selected by the UE includes:

The second base station preferentially selects the first base station or the third base station as the secondary base station that is accessed after the UE is switched; or

The second base station preferentially selects a base station that has the same CSG ID as the first base station or the third base station. The secondary base station that is accessed after the UE is switched.

In the above solution, the method further includes:

Before the second base station determines, according to the handover request message, whether the UE is allowed to access the fourth base station and/or accesses the fourth base station as a CSG member or a non-CSG member identity, the second base station determines that the fourth base station acts as the The secondary base station that is accessed after the UE is switched.

In the above solution, the second base station determines, according to the handover request message, whether the UE is allowed to access the fourth base station and/or accesses the fourth base station as a CSG member or a non-CSG member identity, including:

If the fourth base station is the same base station as the first base station or the third base station, the second base station verifies according to the MME in the handover request message by the UE under the first base station and/or the third base station. Member status information, determining whether the UE is allowed to access the fourth base station and/or accessing the fourth base station as a CSG member or a non-CSG member; or

If the fourth base station is different from the first base station or the third base station, if the CSG ID of the fourth base station is the same as the CSG ID of the first base station or the third base station, and the fourth base station is selected by the UE. The underlying PLMN is the same as the serving PLMN of the UE under the first base station or the third base station, and the second base station is based on the MME verified member of the UE under the first base station and/or the third base station according to the handover request message. State information, determining whether the UE is allowed to access the fourth base station and/or accessing the fourth base station as a CSG member or a non-CSG member; or

The fourth base station is different from the first base station or the third base station, and the CSG ID of the fourth base station is different from the CSG ID of the first base station or the third base station, or is selected by the UE under the fourth base station. If the PLMN is different from the serving PLMN of the UE in the first base station or the third base station, the second base station determines that the UE is in the UE according to the member status information of the UE in the measurement report information in the handover request message. The member status information of the fourth base station is obtained by the second base station, and the second base station subsequently obtains the member status information of the UE that is authenticated by the MME under the fourth base station by using a path transfer process; or

When the fourth base station is a different base station from the first base station or the third base station, and the first base station and/or the third base station is a macro base station or an open mode, the second base station performs a measurement report according to the handover request message. The member status information of the UE in the information in the fourth base station initially determines the member status information of the UE under the fourth base station, and the second base station subsequently obtains the MME through the path transfer process. The member status information of the verified UE under the fourth base station.

Cell identification information of a neighboring cell;

CSG ID information of the neighboring cell;

Member status information of the UE in the neighboring cell;

The PLMN list information of the neighboring cell subjected to CSG verification and access verification;

The embodiment of the invention provides a switching system in a dual connectivity system supporting a closed member group, the system comprising:

An access unit, configured to access the UE by using the first base station;

a sending unit, configured to send, by the first base station that supports UE access, a handover request message including information about the UE under the first base station and/or the third base station to the second base station, where the handover request message is used by the second base station It is determined whether the UE is allowed to access the fourth base station and/or access the fourth base station as a CSG member or a non-CSG member.

In the above solution, the access unit is further configured to support the UE to access only the first base station by using a single connection manner; wherein, the first base station is a hybrid base station or a closed base station or an open mode home base station or a macro base station.

In the above solution, the access unit is further configured to support the UE to simultaneously access the first base station and the third base station by using a dual connectivity manner; wherein the first base station is a primary base station (MeNB); The third base station is a secondary base station; the third base station is a hybrid base station or a closed base station or an open mode home base station or a macro base station.

Cell identification information of a neighboring cell;

CSG ID information of the neighboring cell;

Member status information of the UE in the neighboring cell;

Public land mobile network PLMN list information of the neighboring cell subjected to CSG verification and access verification;

CSG ID information of the first base station and/or the third base station;

The MME-verified member status information of the UE under the first base station and/or the third base station; the member status information includes: a member or a non-member;

The receiving unit is configured to receive, by using the second base station, a handover request message sent by the first base station that is accessed by the UE, where the handover request message includes related information of the UE under the first base station and/or the third base station;

The processing unit is configured to support the second base station to determine, according to the handover request message, whether the UE is allowed to access the fourth base station and/or access the fourth base station as a CSG member or a non-CSG member.

In the foregoing solution, the processing unit is further configured to: after the second base station receives the handover request message, select a secondary base station that is accessed after handover.

In the foregoing solution, the processing unit is configured to: support the second base station to preferentially select the first base station or the third base station as the secondary base station that is accessed after the UE is switched; or support the second base station First, the base station with the same CSG ID as the first base station or the third base station is selected as the secondary base station that is accessed after the UE is switched.

In the above solution, the processing unit is further configured to: before supporting the second base station to determine, according to the handover request message, whether the UE is allowed to access the fourth base station and/or access the fourth base station by using a CSG member or a non-CSG member identity Supporting, by the second base station, the fourth base station as a secondary base station that is accessed after the UE is switched.

In the above solution, the processing unit is set to:

Supporting, by the second base station, the MME passing the MME under the first base station and/or the third base station according to the UE in the handover request message, where the fourth base station is the same base station as the first base station or the third base station. Verifying the member status information, determining whether the UE is allowed to access the fourth base station and/or accessing the fourth base station as a CSG member or a non-CSG member; or

If the fourth base station is different from the first base station or the third base station, if the CSG ID of the fourth base station is the same as the CSG ID of the first base station or the third base station, and the fourth base station is selected by the UE. The PLMN under the same is the same as the serving PLMN of the UE under the first base station or the third base station, and supports the second base station to perform MME verification according to the UE in the handover request message under the first base station and/or the third base station. Member status information, determining whether the UE is allowed to access the fourth base station and/or accessing the fourth base station as a CSG member or a non-CSG member; or

The fourth base station is different from the first base station or the third base station, and the CSG ID of the fourth base station is different from the CSG ID of the first base station or the third base station, or is selected by the UE under the fourth base station. If the PLMN is different from the serving PLMN of the UE in the first base station or the third base station, the second base station is configured to initially determine that the UE is in the measurement information of the UE in the measurement report information in the handover request message. The member status information of the fourth base station is used by the second base station to obtain the member status information of the UE that is authenticated by the MME under the fourth base station by using a path transfer process; or

When the fourth base station is a different base station from the first base station or the third base station, and the first base station and/or the third base station is a macro base station or an open mode, the second base station is supported to measure according to the handover request message. The member status information of the UE in the report information in the fourth base station preliminarily determines the member status information of the UE under the fourth base station, and supports the second base station to obtain the UE verified by the MME through the path transfer process. Member status information under four base stations.

Cell identification information of a neighboring cell;

CSG ID information of the neighboring cell;

Member status information of the UE in the neighboring cell;

The embodiment of the invention further provides a computer readable storage medium storing computer executable instructions, which are implemented when the computer executable instructions are executed to implement the switching method in the dual connectivity system supporting the closed member group.

The embodiment of the present invention further provides a computer readable storage medium storing computer executable instructions, which are implemented when the computer executable instructions are executed to implement switching in the dual connectivity system supporting the closed member group on the second base station side. method.

The handover method in the dual connectivity system supporting the closed member group in the embodiment of the present invention includes: the first base station accessed by the UE sends a handover request message including related information of the UE under the first base station and/or the third base station to the second base station. The handover request message is used by the second base station to determine whether the UE is allowed to access the fourth base station and/or access the fourth base station as a CSG member or a non-CSG member.

In the embodiment of the present invention, the first base station that the UE accesses sends, to the second base station, a handover request message that includes information about the UE under the first base station and/or the third base station, so that the handover request message is used to determine whether the UE is used. Allowing access to the fourth base station or accessing the fourth base station as a CSG member or a non-CSG member, so that the dual-connection system ensures that the CSG access control or membership authentication function is correctly performed, and the UE can access the HeNB with the correct CSG identity. Thus, CSG access control or identity verification of the handover scenario in the dual connectivity system is achieved.

Other aspects will be apparent upon reading and understanding the drawings and detailed description.

BRIEF abstract

1 is a schematic diagram of a dual connectivity architecture of the related art;

2 is a schematic diagram of an implementation process of Embodiment 2 of the method according to the present application;

3 is a schematic diagram of an implementation process of Embodiment 3 of the method according to the present application;

4 is a schematic diagram of a scenario in which a UE switches from a single connection to a dual connection according to an application example 1 of the embodiment of the present invention;

FIG. 5 is a schematic diagram of a scenario in which a UE switches from dual connectivity to dual connectivity in application example 2 of the embodiment of the present invention;

FIG. 6 is a schematic flowchart diagram of an application example 1 according to an embodiment of the present invention;

FIG. 7 is a schematic flowchart of application example 2 of an embodiment of the present invention;

FIG. 8 is a first schematic diagram of a handover system in a dual connectivity system supporting a closed member group according to an embodiment of the present invention; FIG.

FIG. 9 is a second schematic diagram of a handover system in a dual connectivity system supporting a closed member group according to an embodiment of the present invention.

Embodiments of the invention

The implementation of the technical solution will be further described in detail below with reference to the accompanying drawings.

Method embodiment 1

A handover method in a CSG-enabled dual connectivity system according to an embodiment of the present invention, where the method includes:

Step 101: The first base station that the UE accesses sends, to the second base station, a handover request message that includes related information of the UE under the first base station and/or the third base station.

The handover request message is used by the second base station to determine whether the UE is allowed to access the fourth base station or access the fourth base station as a CSG member or a non-CSG member.

Method embodiment two

A switching method in a CSG-enabled dual connectivity system is provided in the embodiment of the present invention. As shown in FIG. 2, the method includes:

Step 201: The second base station receives a handover request message sent by the first base station that is accessed by the UE, where the handover request message includes related information of the UE under the first base station and/or the third base station.

Step 202: The second base station determines, according to the handover request message, whether the UE is allowed to access the fourth base station and/or accesses the fourth base station as a CSG member or a non-CSG member.

Method embodiment three

A switching method in a CSG-enabled dual connectivity system according to an embodiment of the present invention is shown in FIG. 3, where the method includes:

Step 301: The first base station that the UE accesses sends, to the second base station, a handover request message that includes related information of the UE under the first base station and/or the third base station.

Step 302: The second base station determines, according to the handover request message, whether the UE is allowed to access the fourth base station and/or accesses the fourth base station as a CSG member or a non-CSG member.

Compared with the related art, the HeNB can ensure that the CSG access control or the membership authentication function is correctly performed in the case of the dual-connection system, so that the UE can access the HeNB with the correct CSG identity in the dual-connection architecture. .

In an embodiment of the present invention, the UE accesses only the first base station by using a single connection mode, and the first base station is a hybrid base station or a closed mode or an open mode home base station or a macro base station; or, the UE simultaneously uses the dual connection mode. Accessing the first base station and the third base station, wherein the first base station is a primary base station (MeNB), the third base station is a secondary base station (SeNB); and the third base station is a hybrid mode or a closed mode or an open mode home Base station or macro base station.

In an embodiment of the present invention, the handover request message includes measurement report information, where the measurement report information is information reported by the UE to the first base station, and includes one or a combination of the following:

Cell identification information of a neighboring cell;

CSG ID information of the neighboring cell;

Member status information of the UE in the neighboring cell;

Public land mobile network (PLMN) list information of the neighboring cell subjected to CSG verification and access verification;

In an implementation manner of the embodiment of the present invention, related information of the UE under the first base station or the third base station Includes one or combination of the following:

CSG ID information of the first base station and/or the third base station;

Access mode information of the cell in the first base station and/or the third base station; the access mode includes: a hybrid mode or a closed mode;

The PLMN list information reported by the UE and verified by the UE local CSG under the first base station and/or the third base station;

The indication information reported by the UE whether the primary PLMN under the first base station and/or the third base station passes the UE local CSG authentication and access verification;

In an embodiment of the present invention, after the second base station receives the handover request message, the second base station selects the secondary base station that is accessed after the handover, and the second base station selects the secondary base station that is accessed after the handover by the second base station, including: The second base station preferentially selects the first base station or the third base station as the secondary base station that is accessed after the UE is switched; or the second base station preferentially selects the base station with the same CSG ID as the first base station or the third base station as the UE after the handover. Secondary base station.

In an embodiment of the present invention, the second base station determines, according to the handover request message, whether the UE is allowed to access the fourth base station and/or accesses the fourth base station by using a CSG member or a non-CSG member. The method further includes: determining, by the second base station, the fourth base station as a secondary base station that is accessed after the UE is switched.

In an embodiment of the present invention, the second base station determines, according to the handover request message, whether the UE is allowed to access the fourth base station and/or accesses the fourth base station as a CSG member or a non-CSG member identity, including any of the following An implementation:

Manner 1: In a case where the fourth base station is the same base station as the first base station or the third base station, the second base station is configured according to the UE in the handover request message under the first base station and/or the third base station. Obtaining, by the MME, the member status information, determining whether the UE is allowed to access the fourth base station and/or accessing the fourth base station as a CSG member or a non-CSG member;

Manner 2: In a case where the fourth base station is a different base station from the first base station or the third base station, if the CSG ID of the fourth base station is the same as the CSG ID of the first base station or the third base station, and is selected by the UE The PLMN under the fourth base station is the same as the serving PLMN of the UE under the first base station or the third base station, and the second base station according to the UE in the handover request message is MME passing under the first base station and/or the third base station. Verifying member status information, determining whether the UE is allowed to access the fourth base station and/or accessing the fourth base station as a CSG member or a non-CSG member;

Manner 3: The fourth base station is different from the first base station or the third base station, and the CSG ID of the fourth base station is different from the CSG ID of the first base station or the third base station, or is selected by the UE in the fourth If the PLMN under the base station is different from the serving PLMN of the UE in the first base station or the third base station, the second base station initially determines the member status information of the UE in the fourth base station according to the measurement report information in the handover request message. Determining the member status information of the UE under the fourth base station, and the second base station subsequently obtaining the member status information of the UE verified by the MME under the fourth base station by using a path transfer process;

Manner 4: In a case where the fourth base station is a different base station from the first base station or the third base station, and the first base station and/or the third base station is a macro base station or an open mode, the second base station is configured according to the handover request message. The member status information of the UE in the middle measurement report information initially determines the member status information of the UE under the fourth base station, and the second base station subsequently obtains the UE verified by the MME by using the path transfer process. Member status information under the fourth base station.

The following describes an embodiment of the present invention by taking an actual application scenario as an example:

It should be noted that in the following application examples, the dual-connection user plane architecture 1A or 3C is applicable. If the MeNB or the SeNB is an open mode HeNB, it can be regarded as a macro base station (macro eNB). The HeNB of the MeNB or the SeNB identity can be connected to the MME through the HeNB gateway (GW, Gateway), and the S1 message exchanged between the MME and the MeNB or the SeNB is forwarded by the HeNB GW. The HeNB of the MeNB or the SeNB identity can be connected to other base stations through the X2GW, and the X2 message exchanged between the MeNB or the SeNB and other base stations, and the X2 message exchanged between the MeNB and the SeNB can be forwarded by the X2GW.

The implementation of the technical solution will be further described in detail below with reference to the accompanying drawings. It should be noted that the CSG cell in the following application examples includes a closed mode or a hybrid mode HeNB lower cell.

Application example one

This application example describes a UE handover method in a scenario where the UE is switched from a single connection to a dual connection. FIG. 4 is a schematic diagram of a scenario of the method according to the application example. As shown in FIG. 4, the scenario in which the UE switches from a single connection to a dual connection is further subdivided into the following three scenarios:

Scenario 1: Before the UE is switched, the eNB1 is connected to the eNB1 through the single-connection mode. After the handover, the eNB2 and the eNB3 are connected through the dual-connection mode. The eNB2 is the macro base station, and the eNB3 is the small base station, which can be in the open mode or the hybrid mode. Or the closed mode HeNB, as the SeNB of the UE after handover;

Scenario 2: Before the UE is switched, the eNB1 is connected to the eNB1 through the single-connection mode. After the handover, the eNB1 and the eNB2 are connected through the dual-connection mode. The eNB2 is the macro-base station, and the eNB1 is the MeNB. The eNB1 is the small-base station and can be in the open mode or the hybrid mode. Or the closed mode HeNB, as the SeNB of the UE after handover;

Scenario 3: Before the UE is switched, the eNB1 is connected to the eNB1 through a single connection, and after the handover, the eNB2 and the eNB3 are accessed through the dual connectivity mode. The eNB1 is a small base station, and may be an open mode or a hybrid mode or a closed mode HeNB, and the eNB3 is a macro base station. As the MeNB of the UE after handover, eNB2 is a small base station, and may be an open mode or a hybrid mode or a closed mode HeNB as an SeNB of the UE after handover; wherein the CSG IDs of eNB1 and eNB2 are the same or different.

FIG. 6 is a schematic flow chart of the method according to the application example. As shown in FIG. 6, the method described in this application example includes the following steps:

Step 401: The source eNB determines to initiate a handover procedure for the UE based on the measurement report of the UE, and initiates a handover request (Handover Request) message, where the measurement report may include radio resource management (RRM, Radio Resource Management) of the serving cell and the neighboring cell by the UE. The measurement result may include the CSG ID of the HeNB cell, the member status information, the PLMN list information that has been verified by the CSG and the access authentication, and the indication information of whether the primary PLMN passes the verification if the neighboring cell is the HeNB cell.

The member status information indicates whether the UE is a CSG member in the neighboring cell. The CSG verification refers to the verification performed according to the CSG white list information stored locally by the UE. If the white list contains the CSG ID of the cell, the PLMN ID associated with the CSG ID in the white list is the PLMN verified by the CSG; PLMN refers to the same PLMN as RPLMN (Registered PLMN) or EPLMN (Equivalent PLMN). PLMN column after CSG verification and access verification The table information refers to a PLMN set that has undergone CSG verification and access verification in the PLMN list starting from the second PLMN in the PLMN ID list broadcasted by the cell system message. Whether the primary PLMN passes the verification indication information indicates whether the primary PLMN of the neighboring cell passes the CSG authentication and the access verification. The source eNB sends an X2 handover request message to the candidate target base station, and initiates an X2 handover procedure. The three scenarios for the single connection switching to the dual connection in FIG. 4 are respectively described as follows:

For the first scenario, the source eNB is the eNB1, the target MeNB (T-MeNB) is the eNB2, and the eNB1 and the eNB2 are the macro base stations. The X2 handover request message includes the measurement report information reported by the UE to the eNB1, where the measurement report information includes the UE pair. The RRM measurement result of the serving cell and the neighboring cell further includes the CSG ID of the eNB3 (the eNB3 is the HeNB), the member status information, the PLMN list information that has passed the CSG verification and the access authentication, and the indication information of whether the primary PLMN passes the verification.

For the scenario 2, the source eNB is the eNB1, and the target MeNB (T-MeNB) is the eNB2, where the eNB1 is the HeNB and the eNB2 is the macro base station, and the X2 handover request message includes the measurement report information reported by the UE to the eNB1 and the UE under the eNB1. Related information, where the related information of the UE under the eNB1 may include one or a combination of the following:

1) CSG ID information of eNB1;

2) access mode information of the cell under eNB1; the access mode includes: a hybrid mode and a closed mode;

3) MME-verified member status information of the UE under eNB1; member status information includes: member, non-member;

4) the serving PLMN information of the UE under eNB1;

5) PLMN list information reported by the UE that passes the UE local CSG authentication and access verification under eNB1;

6) indication information reported by the UE whether the primary PLMN under the eNB1 passes the UE local CSG authentication and access verification;

7) Whether it is necessary to perform authentication or access control indication through the path transfer process.

For the scenario 3, the source eNB is the eNB1, and the target MeNB (T-MeNB) is the eNB3, where the eNB1 is the HeNB and the eNB2 is the macro base station, and the X2 handover request message includes the measurement report information reported by the UE to the eNB1, where the measurement report information is included. The RRM measurement result of the UE to the serving cell and the neighboring cell is included, and the CSG ID, member status information, and eNB2 (eNB2 is the HeNB) are also included. The PLMN list information of the CSG verification and access verification, and the indication information of whether the primary PLMN passes the verification. The handover request message further includes related information of the UE under the eNB1, where the related information of the UE under the eNB1 may include one or a combination of the following:

1) CSG ID information of eNB1;

4) the serving PLMN information of the UE under eNB1;

Step 402: After receiving the handover request, the target MeNB sends a SeNB Addition Request message, that is, selects the target SeNB for the UE according to the measurement report information in the handover request message or the related information of the UE under the eNB1. Add SeNB. Optionally, the target MeNB preferentially selects the same base station as the source base station as the secondary base station that is accessed after the UE is switched; or the target MeNB preferentially selects the base station that is the same as the CSG ID of the source base station as the secondary base station that is accessed after the UE is switched.

The three scenarios for switching from single connection to dual connection in Figure 4 are described as follows:

For scenario 1, the source eNB is eNB1, the target MeNB (T-MeNB) is eNB2, eNB1 and eNB2 are both macro base stations, eNB2 selects eNB3 as SeNB, and eNB3 is HeNB. The eNB 2 transmits an SeNB Add Request message to the eNB 3 to request to add the eNB 3 as the SeNB. The SeNB addition request message includes CSG member status information reported by the UE in the handover request message.

For scenario 2, the source eNB is eNB1, and the target MeNB (T-MeNB) is eNB2, where eNB1 is HeNB and eNB2 is macro base station. The eNB 2 selects eNB1 as the SeNB. The eNB2 transmits an SeNB Add Request message to the eNB1 to request to add the eNB1 as the SeNB. Optionally, the SeNB The add request message includes the CSG member status information that the UE passes the MME authentication under the eNB1 in the handover request message.

For scenario 3, the source eNB is eNB1, and the target MeNB (T-MeNB) is eNB3, where eNB1 is a HeNB and eNB2 is a macro base station. The eNB 3 selects eNB 2 as the SeNB. The eNB 3 transmits an SeNB Add Request message to the eNB 2 to request to add the eNB 2 as the SeNB. The SeNB addition request message includes CSG member status information reported by the UE in the handover request message.

Step 403: The target SeNB (T-SeNB) agrees to add the SeNB Addition Request Ack message to the target MeNB as the SeNB adds.

Step 404: The target MeNB sends a Handover Request Acknowledge message to the source base station, where the SCG configuration and the data forwarding address may be included.

Step 405: The source base station sends a handover command to the UE by using an RRC Connection Reconfiguration (RRC Connection Reconfiguration) message, instructing the UE to access the target MeNB and using the new configuration.

Step 406: The UE initiates a random access procedure (Random Access Procedure) to complete uplink synchronization.

Step 407: The UE sends an RRC Connection Reconfiguration Complete message to the target MeNB.

Step 408: The UE initiates a random access procedure (Random Access Procedure) to complete uplink synchronization.

Step 409: The target MeNB sends a SeNB Reconfiguration Complete message to the target SeNB.

Step 410 and step 411, if necessary, the source base station sends an SN Status Transfer message to the target MeNB, and forwards the received UE data to the target MeNB.

Step 412 to step 415, the target MeNB initiates a path switch process, and sends a path switch request message to the MME. The message in the process of the step 412 to step 415 further includes: the bearer modification in step 413 ( The Bearer Modication message, the New Path message in the step 414a, and the New Path message in the step 414b also carry the SCG bearer (secondary cell group bearer) parameter.

For scenario 1, the eNB2 obtains the member status information of the UE that is authenticated by the MME under the eNB3 through the path switch request process. The path switch request message sent by the eNB2 includes information such as the CSG ID, the PLMN ID, and the access mode of the eNB3.

For scenario 2, the T-SeNB added by the target MeNB (eNB2) is the same as the source base station, and the source base station has obtained the member status information of the UE that has been authenticated by the MME when the UE accesses the source base station. Optionally, the path switch process is not used. Authentication or access control.

For scenario 3, if the CSG ID of eNB2 and eNB1 are the same, and eNB3 selects that the PLMN under eNB2 is the same as the PLMN of the UE under eNB1, the path switch procedure is not used for identity verification or access control; otherwise, eNB3 passes path The switch request process acquires member status information of the UE that is authenticated by the MME under eNB2. The path switch request message sent by the eNB3 includes information such as the CSG ID, the PLMN ID, and the access mode of the eNB2.

If the member status of the UE received by the target MeNB from the MME through the path switch process is different from that received from the handover request message, the MME-verified member status information is updated to the target SeNB by the SeNB modification procedure.

Step 416: The target MeNB sends a UE context release message to the source base station (such as an eNB) to release the context of the UE at the source base station.

Application example two

This application example describes a UE handover method in a scenario where the UE is switched from dual-connection to dual-connection. FIG. 5 is a schematic diagram of a scenario of the method according to the application example. As shown in FIG. 5, the scenario in which the UE switches from dual connectivity to dual connectivity is further subdivided into the following two scenarios:

Scenario 4: Before the UE is switched, the eNB1 and the eNB3 are accessed through the dual-connection mode, and after the handover, the eNB2 and the eNB3 are accessed through the dual-connection mode, where eNB1 and eNB2 are macro base stations, and eNB3 is a small base station, which may be in open mode or hybrid mode or Closed mode HeNB;

Scenario 5: Before the handover, the UE accesses the eNB1 and the eNB3 through the dual connectivity mode, and after the handover, accesses the eNB2 and the eNB4 through the dual connectivity mode, where eNB1 and eNB2 are macro base stations, and eNB3 and eNB4 are small base stations, which may be open mode or hybrid. Mode or closed mode HeNB.

FIG. 7 is a schematic flow chart of the method according to the application example. As shown in FIG. 7, this application example is The method includes the following steps:

Step 501: The source MeNB (S-MeNB) determines, according to the measurement report of the UE, that the handover procedure is initiated for the UE, and initiates a handover request (Handover Request) message, where the measurement report may include the RRM measurement result of the UE to the serving cell and the neighboring cell. If the neighboring cell is a HeNB cell, the CSG ID of the HeNB cell, the member status information, the PLMN list information that has passed the CSG verification and the access verification, and the indication information of whether the primary PLMN passes the verification may also be included.

The member status information indicates whether the UE is a CSG member in the neighboring cell. The CSG verification refers to the verification performed according to the CSG white list information stored locally by the UE. If the white list contains the CSG ID of the cell, the PLMN ID associated with the CSG ID in the white list is the PLMN verified by the CSG; PLMN refers to the same PLMN as RPLMN or EPLMN. The PLMN list information that has passed the CSG verification and the access verification refers to a PLMN set that has undergone CSG verification and access verification in the PLMN list starting from the second PLMN in the PLMN ID list broadcasted by the cell system message. Whether the primary PLMN passes the verification indication information indicates whether the primary PLMN of the neighboring cell passes the CSG authentication and the access verification. The source eNB sends an X2 handover request message to the candidate target base station, and initiates an X2 handover procedure. The two scenarios of dual connectivity switching to dual connectivity in FIG. 5 are respectively described as follows:

For the fourth scenario, the source MeNB is the eNB1, the target MeNB (T-MeNB) is the eNB2, and the eNB1 and the eNB2 are both the macro base station, and the X2 handover request message includes the measurement report information reported by the UE to the eNB1, where the measurement report information includes the UE pair. The RRM measurement result of the serving cell and the neighboring cell further includes the CSG ID of the eNB3 (the eNB3 is the HeNB), the member status information, the PLMN list information that has passed the CSG verification and the access authentication, and the indication information of whether the primary PLMN passes the verification. The handover request message further includes related information of the UE under the eNB3, and the related information of the UE under the eNB3 may include one or a combination of the following:

1) CSG ID information of eNB3;

2) access mode information of the cell under the eNB3; the access mode includes: a hybrid mode and a closed mode;

3) MME-verified member status information of the UE under eNB3; member status information includes: member, non-member;

4) the serving PLMN information of the UE under eNB3;

5) The PLMN column reported by the UE that passes the UE local CSG authentication and access verification under eNB3 Table information

6) indication information reported by the UE whether the primary PLMN under the eNB3 passes the UE local CSG authentication and access verification;

For the scenario 5, the source MeNB is the eNB1, the target MeNB (T-MeNB) is the eNB2, and the X2 handover request message includes the measurement report information reported by the UE to the eNB1, where the measurement report information includes the RRM of the UE to the serving cell and the neighboring cell. The measurement result further includes the CSG ID of the eNB4, the member status information, the PLMN list information that has passed the CSG verification and the access verification, and the indication information of whether the primary PLMN passes the verification.

The handover request message further includes related information of the UE under the eNB1, and the related information of the UE under the eNB1 may include one or a combination of the following:

1) CSG ID information of eNB1;

4) the serving PLMN information of the UE under eNB1;

Step 502: After receiving the handover request message, the target MeNB (T-MeNB) sends a SeNB Addition Request (SeNB Addition Request), that is, selects the target SeNB for the UE according to the measurement report information in the handover request message or the related information of the UE under the eNB1. , adding SeNB during the handover process. Optionally, the target MeNB preferentially selects the same base station as the source base station as the secondary base station that is accessed after the UE is switched; or the target MeNB preferentially selects the base station that is the same as the CSG ID of the source base station as the secondary base station that is accessed after the UE is switched.

The two scenarios for switching dual connectivity to dual connectivity in Figure 5 are described as follows:

For the scenario 4, the SeNB add request message optionally includes the CSG member status information of the MME that is verified by the MME in the handover request message.

For the scenario 5, the SeNB addition request message includes the CSG member status information that is reported by the UE in the handover request message and is locally verified by the UE under the eNB4.

Step 503: The target SeNB agrees to send the SeNB Addition Request Ack message to the target MeNB as the SeNB addition.

Step 504: The target MeNB sends a Handover Request Acknowledge message to the source MeNB, where the SCG configuration and the data forwarding address may be included.

Step 505, optionally, the source MeNB sends an SeNB Release Request message to the source SeNB.

Step 506: The source MeNB sends a handover command to the UE by using an RRC Connection Reconfiguration (RRC Connection Reconfiguration) message, instructing the UE to access the target MeNB and using the new configuration.

Step 507: The UE initiates a random access procedure (Random Access Procedure) to complete uplink synchronization.

Step 508: The UE sends an RRC Connection Reconfiguration Complete message to the target MeNB.

Step 509: The UE initiates a random access procedure (Random Access Procedure) to complete uplink synchronization.

Step 510: The target MeNB sends a SeNB Reconfiguration Complete message to the target SeNB.

Step 511 and step 512, if necessary, the source MeNB sends a SN Status Transfer message to the target MeNB, and forwards the received UE data to the target MeNB.

Step 513 to step 516, the target MeNB initiates a path switch (path switch) process, and sends a path switch request message to the MME. The message in the step 513 to step 516 of the interaction process further includes: the bearer modification in step 514 ( The Bearer Modication message, the New Path message in step 514a, and the New Path message in step 514b are also The message carrying the SCG bearer (the secondary cell group bearer) and the Path Swtich Request Acknowledge message in step 516 are carried.

The two scenarios in Figure 5 are described as follows:

For the scenario 4, the target SeNB is the same as the source SeNB, and the UE has obtained the member status information of the UE that has been authenticated by the MME when accessing the source SeNB. Optionally, the path switch process is not used for identity verification or access control.

For scenario 5, if the CSG IDs of eNB4 and eNB3 are the same, and eNB2 selects that the PLMN under eNB4 is the same as the PLMN of the UE under eNB3, the path switch procedure is not used for identity verification or access control; otherwise, eNB2 passes path The switch request process acquires the member status information of the MME verified by the MME, and the path switch request message sent by the eNB2 includes information such as the CSG ID, the PLMN ID, and the access mode of the eNB4.

Step 517: The target MeNB sends a UE context release message to the source MeNB to release the UE context.

Step 518, optionally, the source MeNB sends a UE context release message to the source SeNB to release the UE context.

System embodiment one

A switching system in a CSG-enabled dual connectivity system is provided in the embodiment of the present invention. As shown in FIG. 8, the system includes:

An access unit, configured to access the UE by using the first base station;

In this embodiment, the access unit is further configured to support that the UE accesses only the first base station by using a single connection manner, where the first base station is in a hybrid mode or a closed mode or an open mode. Home base station or macro base station.

In this embodiment, the access unit is further configured to support the UE to simultaneously access the first base station and the third base station by using a dual connectivity manner; wherein the first base station is an MeNB; The base station is a SeNB; the third base station is a home base station or a macro base station in a hybrid mode or a closed mode or an open mode.

In this embodiment, the handover request message includes measurement report information, where the measurement report information is information that is reported by the UE to the first base station, and includes one or a combination of the following:

Cell identification information of a neighboring cell;

CSG ID information of the neighboring cell;

Member status information of the UE in the neighboring cell;

In this embodiment, the related information of the UE under the first base station and/or the third base station includes one or a combination of the following:

CSG ID information of the first base station and/or the third base station;

System embodiment two

A switching system in a dual connectivity system supporting CSG according to an embodiment of the present invention is shown in FIG. The system includes:

In this embodiment, the processing unit is further configured to: after the second base station receives the handover request message, select, for the UE, the secondary base station that is accessed after the handover.

In this embodiment, the processing unit is configured to: support the second base station to preferentially select the first base station or the third base station as the secondary base station that is accessed after the UE is switched; or support the second base station to preferentially select and A base station with the same CSG ID of a base station or a third base station serves as a secondary base station that is accessed after the UE is switched.

In this embodiment, the processing unit is further configured to: when the second base station is supported, according to the handover request message, determine whether the UE is allowed to access the fourth base station, and/or access the fourth base station by using a CSG member or a non-CSG member. Previously, the second base station is supported to determine the fourth base station as a secondary base station that is accessed after the UE is switched.

In this embodiment, the processing unit is configured to:

The fourth base station is a different base station from the first base station or the third base station, and the CSG of the fourth base station The ID is different from the CSG ID of the first base station or the third base station, or the PLMN under the fourth base station selected by the UE is different from the serving PLMN of the UE under the first base station or the third base station, and the foregoing is supported. The second base station initially determines the member status information of the UE under the fourth base station according to the member information of the UE in the measurement report information in the measurement report message, and supports the second base station to obtain the MME through the path transfer process. The member status information of the verified UE under the fourth base station; or

Cell identification information of a neighboring cell;

CSG ID information of the neighboring cell;

Member status information of the UE in the neighboring cell;

The integrated unit or module described in the embodiments of the present invention may also be stored in a computer readable storage medium if it is implemented in the form of a software function module and sold or used as a standalone product. Based on such understanding, the technical solution of the embodiments of the present invention may be embodied in the form of a software product in essence or in the form of a software product, which is stored in a storage medium and includes a plurality of instructions for making A computer device (which may be a personal computer, server, or network device, etc.) performs all or part of the methods described in various embodiments of the present application. The foregoing storage medium includes: a U disk, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk, and the like. . Thus, the embodiments of the present invention are not limited to any special The combination of hardware and software.

The embodiment of the invention further provides a computer readable storage medium, wherein a computer program for executing a handover method in a dual connectivity system supporting a closed member group according to an embodiment of the present invention is stored.

One of ordinary skill in the art will appreciate that all or a portion of the above steps may be performed by a program to instruct related hardware, such as a processor, which may be stored in a computer readable storage medium, such as a read only memory, disk or optical disk. Wait. Alternatively, all or part of the steps of the above embodiments may also be implemented using one or more integrated circuits. Correspondingly, each module/unit in the above embodiment may be implemented in the form of hardware, for example, by implementing an integrated circuit to implement its corresponding function, or may be implemented in the form of a software function module, for example, executing a program stored in the memory by a processor. / instruction to achieve its corresponding function. This application is not limited to any specific combination of hardware and software.

The above is only an optional embodiment of the present application, and is not intended to limit the scope of the present application.

Industrial applicability

The embodiment of the present application provides a handover method and system in a dual connectivity system supporting a closed member group, so that the CSG access control or the membership authentication function is correctly performed in the case of a dual connectivity system, and the UE can access the correct CSG identity. The HeNB, thereby implementing CSG access control or identity verification of the handover scenario in the dual connectivity system.

Claims

A handover method in a dual connectivity system supporting closed member groups, the method comprising:

The first base station accessed by the user equipment UE sends a handover request message including information about the UE under the first base station and/or the third base station to the second base station;

The handover request message is used by the second base station to determine whether the UE is allowed to access the fourth base station and/or access the fourth base station as a closed member group CSG member or a non-CSG member.
The method of claim 1 further comprising:

The UE accesses only the first base station by using a single connection manner;

The first base station is a hybrid base mode or a closed base mode or an open open mode home base station or macro base station.
The method of claim 1 further comprising:

The UE accesses the first base station and the third base station simultaneously through a dual connectivity manner;

The first base station is a primary base station MeNB, and the third base station is a secondary base station SeNB;

The third base station is a hybrid base mode or a closed base mode or an open open mode home base station or macro base station.
The method of claim 1, wherein the handover request message includes measurement report information; the measurement report information is information reported by the UE to the first base station, and includes one or a combination of the following:

Cell identification information of a neighboring cell;

CSG identification ID information of the neighboring cell;

Member status information of the UE in the neighboring cell;

Public land mobile network PLMN list information of the neighboring cell subjected to CSG verification and access verification;

Whether the primary PLMN of the neighboring cell passes the indication information of the CSG authentication and access authentication.
The method according to claim 1, wherein the related information of the UE under the first base station and/or the third base station comprises one or a combination of the following:

CSG identification ID information of the first base station and/or the third base station;

Access mode information of the cell in the first base station and/or the third base station; the access mode information includes: a hybrid hybrid mode or a closed closed mode;

Member status information verified by the UE under the first base station and/or the third base station by the mobility management entity MME; the member status information includes: a member or a non-member;

Serving the public land mobile network PLMN information of the UE under the first base station or the third base station;

The PLMN list information reported by the UE and verified by the UE local CSG and the access authentication under the first base station and/or the third base station;

The indication information reported by the UE whether the primary PLMN passes the UE local CSG authentication and access authentication at the first base station and/or the third base station;

Whether an indication of authentication or access control needs to be performed through the path transfer process.
A handover method in a dual connectivity system supporting closed member groups, the method comprising:

Receiving, by the second base station, a handover request message sent by the first base station that is accessed by the user equipment UE, where the handover request message includes related information of the UE under the first base station and/or the third base station;

The second base station determines, according to the handover request message, whether the UE is allowed to access the fourth base station and/or accesses the fourth base station as a closed member group CSG member or a non-CSG member.
The method of claim 6 further comprising:

After receiving the handover request message, the second base station selects a secondary base station that is accessed after handover.
The method according to claim 7, wherein the selecting a secondary base station for handover after the handover for the UE comprises:

The second base station preferentially selects the first base station or the third base station as the secondary base station that is accessed after the UE is switched; or

The second base station preferentially selects a base station that is the same as the CSG identifier ID of the first base station or the third base station as the secondary base station that is accessed after the UE is switched.
The method of claim 6 further comprising:

Determining, by the second base station, whether the UE is allowed to access the fourth base station and/or according to the handover request message Before accessing the fourth base station by the CSG member or the non-CSG member, the second base station determines that the fourth base station is the secondary base station that is accessed after the UE is switched.
The method according to claim 6, wherein the second base station determines, according to the handover request message, whether the UE is allowed to access the fourth base station and/or accesses the fourth base station as a CSG member or a non-CSG member identity, including:

If the fourth base station is the same base station as the first base station or the third base station, the second base station performs mobility management according to the UE in the handover request message under the first base station and/or the third base station. Member status information verified by the entity MME, determining whether the UE is allowed to access the fourth base station and/or accessing the fourth base station as a CSG member or a non-CSG member; or

If the fourth base station is different from the first base station or the third base station, if the CSG identifier ID of the fourth base station is the same as the CSG ID of the first base station or the third base station, and the fourth selected by the UE is in the fourth The public land mobile network PLMN under the base station is the same as the serving PLMN of the UE under the first base station or the third base station, and the second base station is configured according to the UE in the handover request message under the first base station and/or the third base station. Obtaining, by the MME, the member status information, determining whether the UE is allowed to access the fourth base station and/or accessing the fourth base station as a CSG member or a non-CSG member; or

The fourth base station is different from the first base station or the third base station, and the CSG ID of the fourth base station is different from the CSG ID of the first base station or the third base station, or is selected by the UE under the fourth base station. If the PLMN is different from the serving PLMN of the UE in the first base station or the third base station, the second base station determines that the UE is in the UE according to the member status information of the UE in the measurement report information in the handover request message. The member status information of the fourth base station is obtained by the second base station, and the second base station subsequently obtains the member status information of the UE that is authenticated by the MME under the fourth base station by using a path transfer process; or

In a case where the fourth base station is a different base station from the first base station or the third base station, and the first base station and/or the third base station is a macro base station or an open open mode, the second base station measures according to the handover request message. The member status information of the UE in the report information in the fourth base station initially determines the member status information of the UE under the fourth base station, and the second base station subsequently obtains the UE verified by the MME in the fourth through the path transfer process. Member status information under the base station.
The method according to any one of claims 6 to 10, wherein the handover request message includes measurement report information; the measurement report information is reported by the UE to the first base station. Information, including one or a combination of the following:

Cell identification information of a neighboring cell;

CSG identification ID information of the neighboring cell;

Member status information of the UE in the neighboring cell;

Public land mobile network PLMN list information of the neighboring cell subjected to CSG verification and access verification;

Whether the primary PLMN of the neighboring cell passes the indication information of the CSG authentication and access authentication.
A switching system in a dual connectivity system supporting closed member groups, the system comprising:

An access unit, configured to access the user terminal UE by using the first base station;

a sending unit, configured to send, by the first base station that supports UE access, a handover request message including information about the UE under the first base station and/or the third base station to the second base station, where the handover request message is used by the second base station It is determined whether the UE is allowed to access the fourth base station and/or access the fourth base station as a closed member group CSG member or a non-CSG member.
The system according to claim 12, wherein the access unit is further configured to support the UE to access only the first base station in a single connection manner; wherein the first base station is in a hybrid hybrid mode or a closed closed mode or A home base station or a macro base station that is open in open mode.
The system according to claim 12, wherein the access unit is further configured to support the UE to simultaneously access the first base station and the third base station by using a dual connectivity manner; wherein the first base station is The primary base station MeNB; the third base station is a secondary base station SeNB; and the third base station is a hybrid base mode or a closed base mode or an open open mode home base station or macro base station.
The system according to claim 12, wherein the handover request message includes measurement report information; the measurement report information is information reported by the UE to the first base station, and includes one or a combination of the following:

Cell identification information of a neighboring cell;

CSG ID information of the neighboring cell;

Member status information of the UE in the neighboring cell;

Public land mobile network PLMN of CSG verification and access verification of the neighboring cell List information

Whether the primary PLMN of the neighboring cell passes the indication information of the CSG authentication and access authentication.
The system according to claim 12, wherein the related information of the UE under the first base station and/or the third base station comprises one or a combination of the following:

CSG identification ID information of the first base station and/or the third base station;

Access mode information of the cell in the first base station and/or the third base station; the access mode information includes: a hybrid hybrid mode or a closed closed mode;

Member status information verified by the UE under the first base station and/or the third base station by the mobility management entity MME; the member status information includes: a member or a non-member;

Serving the public land mobile network PLMN information of the UE under the first base station or the third base station;

The PLMN list information reported by the UE and verified by the UE local CSG and the access authentication under the first base station and/or the third base station;

The indication information reported by the UE whether the primary PLMN under the first base station and/or the third base station passes the UE local CSG authentication and access verification;

Whether an indication of authentication or access control needs to be performed through the path transfer process.
A switching system in a dual connectivity system supporting closed member groups, the system comprising:

The receiving unit is configured to receive, by using the second base station, a handover request message sent by the first base station that is accessed by the user equipment UE, where the handover request message includes related information of the UE under the first base station and/or the third base station;

The processing unit is configured to support the second base station to determine, according to the handover request message, whether the UE is allowed to access the fourth base station and/or access the fourth base station as a closed member group CSG member or a non-CSG member.
The system of claim 17, wherein the processing unit is further configured to: support the second base station to select, after receiving the handover request message, a secondary base station that is accessed after handover.
The system according to claim 18, wherein the processing unit is configured to: support the second base station to preferentially select the first base station or the third base station as a secondary base station that is accessed after the UE is switched; Alternatively, the second base station is supported to preferentially select a base station that is the same as the CSG identifier ID of the first base station or the third base station as the secondary base station that is accessed after the UE is switched.
The system of claim 17, wherein the processing unit is further configured to: determine whether the second base station determines whether the UE is allowed to access the fourth base station and/or the CSG member or the non-CSG member according to the handover request message. Before the identity accesses the fourth base station, the second base station is supported to determine that the fourth base station is the secondary base station that is accessed after the UE is switched.
The system of claim 17 wherein said processing unit is configured to:

If the fourth base station is the same base station as the first base station or the third base station, the second base station is supported to move according to the UE in the handover request message under the first base station and/or the third base station. Administering the member status information verified by the entity MME, determining whether the UE is allowed to access the fourth base station and/or accessing the fourth base station as a CSG member or a non-CSG member; or

If the fourth base station is different from the first base station or the third base station, if the CSG identifier ID of the fourth base station is the same as the CSG ID of the first base station or the third base station, and the fourth selected by the UE is in the fourth The public land mobile network PLMN under the base station is the same as the serving PLMN of the UE under the first base station or the third base station, and supports the second base station according to the UE in the handover request message under the first base station and/or the third base station. MME-verified member status information, determining whether the UE is allowed to access the fourth base station and/or accessing the fourth base station as a CSG member or a non-CSG member; or

The fourth base station is different from the first base station or the third base station, and the CSG ID of the fourth base station is different from the CSG ID of the first base station or the third base station, or is selected by the UE under the fourth base station. If the PLMN is different from the serving PLMN of the UE in the first base station or the third base station, the second base station is configured to initially determine that the UE is in the measurement information of the UE in the measurement report information in the handover request message. The member status information of the fourth base station is used by the second base station to obtain the member status information of the UE that is authenticated by the MME under the fourth base station by using a path transfer process; or

If the fourth base station is a different base station from the first base station or the third base station, and the first base station and/or the third base station is a macro base station or an open open mode, the second base station is supported according to the handover request message. The member status information of the UE in the measurement report information in the fourth base station preliminarily determines the member status information of the UE under the fourth base station, and supports the second base station to subsequently obtain the MME verified UE by the path transfer process. Member status information under the fourth base station.
The system according to any one of claims 17 to 21, wherein the handover request message includes measurement report information; the measurement report information is information reported by the UE to the first base station, and includes one of the following Or combination:

Cell identification information of a neighboring cell;

CSG identification ID information of the neighboring cell;

Member status information of the UE in the neighboring cell;

Public land mobile network PLMN list information of the neighboring cell subjected to CSG verification and access verification;

Whether the primary PLMN of the neighboring cell passes the indication information of the CSG authentication and access authentication.