WO2015043289A1 - Method for interacting, by nodeb, with x2 gateway, nodeb, and x2 gateway - Google Patents

Abstract

A method for interacting, by a NodeB, with an X2 gateway, a NodeB, and an X2 gateway. The method comprises a process of performing registration for a NodeB, and the process comprises: a home evolved NodeB (HeNB) or an evolved NodeB (eNB) sending a first registration request message to an X2 gateway, the first registration request message carrying a NodeB identifier of the NodeB and further carrying the following one or more set of information of the NodeB: location information of the HeNB or eNB, serving cell information of the HeNB or eNB, and a closed member group identifier and access mode information of the HeNB; and the X2 gateway receiving the first registration request message, and then storing a matching relationship between the NodeB identifier of the HeNB or eNB and an address of a transport network layer (TNL), and returning a registration response message.

Description

 Method for interacting base station and X2 gateway, base station and X2 gateway

 The present invention relates to wireless communication technologies, and in particular, to a method for a base station to interact with an X2 gateway, a base station, and an X2 gateway.

Background technique

 The home base station is a small, low-power base station that is deployed as a dedicated resource for private users in private places such as homes, groups, companies, or schools, and is wired via cable, digital subscriber line (DSL, Digital Subscriber Line) or fiber. The device is connected to the carrier's core network. The main role of the home base station is to provide users with higher service rates and reduce the cost of using high-rate services, while at the same time making up for the inadequate coverage of existing distributed cellular wireless communication systems. The advantages of the home base station include: low cost, easy to use (plug and play), low output power, saving the cost of the operator to set up and maintain the base station, and solving indoor coverage optimization.

 In the Long Term Evolution (LTE) system, an evolved home base station (HeNB,

The network architecture of Home Evolved NodeB is shown in Figure 1. The UE (User Equipment) under the HeNB is based on the existing air interface protocol to access the evolved Home Evolved NodeB Access Network (HeNB AN). The HeNB AN is composed of a HeNB and an evolved Home Base Station Gateway (HeNB GW, Home Evolved NodeB Gateway).

The functions supported by the HeNB are basically the same as those of the enhanced base station (eNB, evolved Node B). Only one cell is connected under one HeNB. The HeNB GW is an optional network element. The main functions of the HeNB GW are: relaying the UE-related S1 message, terminating the non-UE-related S1 message, and selecting the mobility management entity (MME, Mobility Management Entity) for the UE in the attaching process. The HeNB can directly connect to the Evolved Packet Core (EPC) through the SI interface, where the HeNB is connected to the Serving Gateway (S-GW, Serving Gateway) through the S1-U interface, and the HeNB is connected to the MME through the SI-MME interface. . The HeNB may also connect to the EPC through the HeNB GW, where the SI-U interface may terminate at the HeNB GW, or terminate at the EPC, and the SI-MME interface passes through the HeNB GW to the EPC. The EPC network element includes an MME and an S-GW. The MME is responsible for related functions such as bearer management and mobility management. S-GW takes on the functions of data routing on the user side. This In addition, the evolved home base station management system (HMS, HeNB Management System) in FIG. 1 maintains and manages the HeNB, and configures and controls the HeNB according to the requirements of the operator, where the most important is to implement configuration functions for the HeNB, and configured The content includes verification of location information, parameters of the HeNB, parameters of the core network, parameters of the radio access network (RAN, Radio Access Network), and parameters of the radio frequency (RF, Radio Frequency). The Security Gateway (SeGW, Security Gateway) supports security-related functions in the network.

 The HeNB only provides services for specific users, so the concept of Closed Subscriber Group (CSG) is introduced to perform access control. Each HeNB has a specific CSG attribute, including a CSG Identity (CSG ID) and access mode information. Here, three cell access modes are defined for the HeNB: a closed mode, in which only members of the closed member group of the corresponding CSG ID are allowed to access; a hybrid (Hybrid) mode, allowing all UEs to be connected The members of the closed member group with the corresponding CSG ID identifier enjoy higher priority; the Open mode allows all UEs to access.

At the time of Release 10 and Release 11, the third-generation partner, the 3rd Generation Partnership Project, agreed to permit the establishment of an X2 interface for handover purposes in the following scenarios: between the eNB and the open mode HeNB, the eNB and HeNB in hybrid mode, HeNB in source closed mode to target eNB, HeNB in open mode and HeNB in open/hybrid mode, HeNB in source closed mode to HeNB in target open/hybrid mode, with same public land mobile network (Common Land Mobile Network, PLMN) The HeNB of the source hybrid/closed mode of the ID and CSG ID to the HeNB of the target closed mode. Between the eNB and the HeNB, the HeNB may be a direct X2 connection, or may be an indirect X2 connection through a new functional entity X2 gateway (X2 GW, X2 Gateway) similar to the HeNB GW. During the discussion of the introduction of the X2 GW scheme, the source side uses the target side-based Radio Network Layer (RNL, Radio Network Layer) identifier (ID, Identity) to route the X2 message, the HeNB or the eNB to use the new registration message at boot time. The X2 GW establishes and stores the matching relationship between the RNL ID and the Transport Network Layer (TNL) address, and the IP address configuration of the X2 GW to the HeNB, and the eNB learns the IP of the X2 GW through configuration or through the TNL address discovery process. The scheme of the address is a candidate for the X2 GW. The TNL address of the HeNB or eNB may be obtained from the information of the transport layer when the message is received. In the existing standard, the HeNB is established in the HeNB through the S1 establishment process. Registered on the GW. Since the X2 GW is a new functional entity different from the HeNB GW, as shown in Figure 2. Therefore, the new registration process of the (H)eNB on the X2 GW needs to be refined. Summary of the invention

 The embodiments of the present invention provide a method for a base station to interact with an X2 gateway, a base station, and an X2 gateway, which can implement registration of the base station in the X2 gateway. A method for a base station to interact with an X2 gateway, including a process for registering the base station, the process includes:

 The X2 gateway receives a first registration request message sent by the evolved home base station HeNB or the enhanced base station eNB, where the first registration request message carries the base station identifier of the HeNB or the eNB, and further carries the following one of the HeNB or the eNB. Group or groups of information:

 Location information of the HeNB or eNB;

 The serving cell information of the HeNB or the eNB;

 The closed member group identifier and access mode information of the HeNB;

 After receiving the first registration request message, the X2 gateway saves the matching relationship between the base station identifier of the HeNB or the eNB and the transport network layer TNL address, and returns a registration response message. Preferably, the method further includes a process of registering with another base station, the process comprising:

 The X2 gateway receives the X2 setup request message sent by the HeNB, and if the X2 gateway fails to route the X2 setup request message to the opposite eNB, the X2 gateway receives the second registration request message sent by the HeNB, and the second The registration request message carries the base station identifier of the opposite eNB and the TNL address of the opposite eNB obtained through the TNL address discovery process;

 After receiving the second registration request message, the X2 gateway saves the matching relationship between the base station identifier and the TNL address of the opposite eNB, and returns a response message.

 Preferably, the first registration request message carries the closed member group identifier and the access mode information of the HeNB, and the X2 gateway saves the closed member group identifier of the HeNB after receiving the first registration request message. Access mode information;

The method further includes: After receiving the X2 interface setup request sent by the source base station, the X2 gateway determines whether to allow the X2 interface to be established according to the closed member group identifier and the access mode information of the source base station and the target base station. Preferably, the return registration response message includes:

 The X2 gateway successfully registers, and returns a registration success response message, where the success response message carries a message type cell, or a message type cell and a danger diagnosis cell, so that the HeNB or the eNB learns that the X2 gateway has successfully saved the HeNB or The matching relationship between the base station identifier of the eNB and the TNL address.

 Preferably, the registration success response message further carries an X2 gateway identifier.

 Preferably, the X2 gateway further carries information in the registration success response message according to one of the following manners;

 method one:

 If the first registration request message is sent by the eNB, the registration success response message carries the serving cell information or the base station identifier of the HeNB registered under the X2 gateway;

 If the first registration request message is sent by the HeNB, the registration success response message carries the serving cell information or the base station identifier of the eNB and the HeNB registered under the X2 gateway;

 If the first registration request message is sent by the eNB, the registration success response message carries the serving cell information or the base station identifier of the HeNB registered under the X2 gateway;

 If the first registration request message is sent by the HeNB, the registration success response message does not carry information of the base station registered under the X2 gateway.

 Preferably, the serving cell information or the base station identifier of the HeNB includes a TNL address of the HeNB, and/or a closed member group identifier and access mode information of the HeNB;

 The serving cell information or the base station identifier of the eNB includes a TNL address of the eNB. Preferably, the registration success response message returned by the X2 gateway includes closed member group identifier and access mode information of the HeNB registered under the X2 gateway.

 Preferably, the X2 gateway fails to register, and returns a registration failure response message; the registration failure response message includes one or more of the following information:

Reason for registration failure, minimum allowed waiting time, and dangerous diagnostics. Preferably, the above method further includes:

 The X2 gateway receives a third registration request message sent by the HeNB before the shutdown, the third registration request message carries the shutdown identifier and the base station identifier of the HeNB, and the X2 gateway receives the third registration request message. Afterwards, forwarding the third registration request message to the HeNB or the eNB that is connected to the HeNB; or

 After the connection between the H2 and the HeNB is disconnected, the X2 gateway sends a fourth registration request message to the HeNB or the eNB that is connected to the HeNB, where the fourth registration request message carries the base station identifier of the HeNB. And shutdown logo. Preferably, the method further includes a process of deregistration, the process comprising:

 The X2 gateway receives a de-registration message sent by the HeNB before the shutdown, and the de-registration message carries the base station identifier of the HeNB; after receiving the de-registration message, the X2 gateway forwards the de-registration message to a HeNB or an eNB connected to the HeNB; or

 After the connection between the H2 and the HeNB is disconnected, the X2 gateway sends a deregistration message to the HeNB or the eNB that is connected to the HeNB, and carries the base station identifier of the HeNB. Preferably, the above method further includes a process of registering an update, the process comprising:

 When the serving cell of the HeNB or the eNB changes, the X2 gateway receives the registration update message sent by the HeNB or the eNB, where the registration update message carries the evolved universal land-based radio access network, the cell global identifier ECGI and the new The serving cell information; after receiving the registration update message, the X2 gateway forwards the registration update message to a HeNB or an eNB that is connected to the HeNB or the eNB; or

 After the X2 gateway changes the serving cell of the HeNB or the eNB, the X2 gateway sends a registration update message to the HeNB or the eNB that is connected to the HeNB or the eNB, and carries the ECGI of the old serving cell and the new serving cell information. Preferably, the above method further includes a process of registering an update, the process comprising:

Receiving, by the X2 gateway, a registration update message sent by the HeNB before the shutdown, the registration update message carrying the base station identifier of the HeNB and information indicating that the HeNB is powered off; after receiving the registration update message, the X2 gateway Forwarding the registration update message to the HeNB a connected HeNB or eNB; or,

 After discovering that the connection with the HeNB is disconnected, the X2 gateway sends a registration update message to the HeNB or the eNB that is connected to the HeNB, and carries the base station identifier of the HeNB and information indicating that the HeNB is powered off. Preferably, the above method further includes:

 Receiving, by the X2 gateway, a registration update message sent after the powered off HeNB is powered on again, the registration update message carrying the base station identifier of the HeNB and information indicating that the HeNB is powered on; after receiving the registration update message, the X2 gateway Forwarding the registration update message to a HeNB or an eNB that is connected to the HeNB; or

 After the HeNB is powered on again, the X2 gateway sends a registration update message to the HeNB or the eNB that is connected to the HeNB, where the registration update message carries the base station identifier of the HeNB and information indicating that the HeNB is powered on. The embodiment of the present invention further provides another method for a base station to interact with an X2 gateway, including a process for registering the base station, where the process includes:

 The evolved home base station HeNB or the enhanced base station eNB sends a first registration request message to the X2 gateway;

 The first registration request message carries the base station identifier of the HeNB or the eNB, and further carries the following one or more groups of information of the HeNB or the eNB:

 Location information of the HeNB or eNB;

 The serving cell information of the HeNB or the eNB;

 The closed member group identifier and access mode information of the HeNB. Preferably, the method further includes a process of registering with another base station, the process comprising:

The HeNB sends an X2 setup request message to the X2 gateway. If the X2 gateway fails to route the X2 setup request message to the opposite eNB, the second registration request message is sent to the X2 gateway, and the base station identifier of the opposite eNB is carried and passed. The TNL address of the peer eNB obtained by the TNL address discovery process. Preferably, the above method further includes:

 The HeNB or the eNB receives the registration success response message returned by the X2 gateway, where the registration success response message includes the closed member group identifier and the access mode information of the HeNB registered under the X2 gateway;

 The HeNB or the eNB determines whether the establishment of the X2 interface to the HeNB is restricted according to the closed member group identifier and the access mode information of the HeNB that is registered under the X2 gateway, and initiates the establishment of the X2 interface when not limited. process. Preferably, the above method further includes:

 Before the HeNB shuts down, the HeNB sends a third registration request message to the X2 gateway, and carries the shutdown identifier and the base station identifier of the HeNB. Preferably, the above method further includes:

Before the shutdown, the HeNB sends a deregistration message to the X2 gateway, where the deregistration message includes the base station identifier of the HeNB, and after receiving the deregistration message, the X2 gateway forwards the deregistration message to the Preferably, the HeNB has a connected HeNB or an eNB. The method further includes:

When the serving cell of the HeNB or the eNB changes, sending a registration update message to the X2 gateway, carrying the evolved universal land-based radio access network, the cell global identifier ECGI and the new serving cell information of the old serving cell; the X2 gateway receives After the registration update message, the registration update message is forwarded to the HeNB or the eNB that is connected to the HeNB or the eNB. Preferably, the above method further includes:

 Before the HeNB shuts down, the HeNB sends a registration update message to the X2 gateway, and carries the base station identifier of the HeNB and information indicating that the HeNB is powered off. After receiving the registration update message, the X2 gateway forwards the registration update message to the The HeNB has a connected HeNB or eNB. Preferably, the above method further includes:

After the powered off HeNB is powered on again, the HeNB sends a registration update to the X2 GW. And carrying the information about the base station of the HeNB and the information indicating that the HeNB is powered on; after receiving the registration update message, the X2 gateway forwards the registration update message to the HeNB or the eNB that is connected to the HeNB. The embodiment of the present invention further provides a base station, including: a first registration unit and a communication unit, where: the first registration unit is configured to: send, by using the communication unit, a first registration request message to an X2 gateway, where the base station For the evolved home base station HeNB or the enhanced base station eNB, the first registration request message carries the base station identifier of the base station, and further carries the following one or more groups of information of the base station:

 Location information of the HeNB or the eNB;

 The serving cell information of the HeNB or the eNB;

 Closed member group identifier and access mode information of the HeNB;

 The communication unit is configured to send the first registration request message to the X2 gateway. Preferably, the base station further includes a second registration unit, where:

 The second registration unit is configured to: send an X2 setup request message to the X2 gateway, and if the X2 gateway fails to route the X2 setup request message to the opposite eNB, send a second registration request to the X2 gateway. The message carries the base station identifier of the opposite eNB and the TNL address of the opposite eNB obtained by the transport network layer TNL address discovery process. Preferably, the base station further includes a determining unit, where:

 The determining unit is configured to: determine, according to the closed member group identifier and the access mode of the HeNB that is registered in the X2 gateway that is included in the registration success response message received by the communication unit, whether to initiate an X2 interface establishment to the HeNB Restricted, the establishment process of the X2 interface is initiated when it is not restricted. Preferably, the base station further includes a third registration unit, where:

The third registration unit is configured to send a third registration request message to the X2 gateway before the HeNB is shut down, where the third registration request message carries a shutdown identifier and a base station identifier of the HeNB. Preferably, the base station further includes a deregistration unit, where:

 The de-registration unit is configured to send a de-registration message to the X2 gateway before the HeNB is shut down, where the de-registration message carries the base station identifier of the HeNB where the de-registration message is located. Preferably, the foregoing base station further includes a registration update unit, where:

 The registration update unit is configured to: when a change occurs in the serving cell, send a registration update message to the X2 gateway, where the registration update message carries an evolved universal land-based radio access network cell global identifier ECGI of the original serving cell and New service cell information. Preferably, the foregoing base station further includes a registration update unit, where:

 The registration update unit is configured to: send a registration update message to the X2 gateway before the HeNB is shut down, where the registration update message carries the base station identifier of the HeNB and information indicating that the HeNB is powered off. Preferably, the base station further includes a restarting update unit, where:

 The focus on the update unit is set to: after the powered off HeNB is powered on again, send a registration update message to the X2 gateway, where the registration update message carries the base station identifier of the HeNB and information indicating that the HeNB is powered on. An embodiment of the present invention further provides an X2 gateway, including: a communication unit, a matching relationship holding unit, and a response unit, where:

 The communication unit is configured to receive and send a message;

 The matching relationship holding unit is configured to: after the communication unit receives the first registration request message, save a matching relationship between the base station identifier of the evolved home base station HeNB or the enhanced base station eNB and the transport network layer TNL address;

 The response unit is configured to return a registration response message.

Preferably, the matching relationship holding unit is further configured to: after the communication unit receives the second registration request message, save the matching relationship between the base station identifier and the TNL address of the opposite eNB, and return a response message. Preferably, the X2 gateway further includes a determining unit, where: The determining unit is configured to: after receiving the first registration request message, save the closed member group identifier and access mode information of the HeNB, and receive the X2 interface establishment request sent by the source base station in the communication unit Then, it is determined whether the X2 interface is allowed to be established according to the closed member group identifier and the access mode of the source base station and the target base station.

 Preferably, the response unit is configured to: register successfully, return a registration success response message, carry a message type cell, or a message type cell and a danger diagnosis cell, so that the HeNB or the eNB learns that the X2 gateway is successful. The matching relationship between the base station identifier and the TNL address of the HeNB or the eNB is saved.

 Preferably, the registration success response message further carries an X2 gateway identifier.

 Preferably, the response unit is further configured to carry information in the registration success response message according to one of the following manners;

 method one:

 If the first registration request message is sent by the eNB, the registration success response message carries the serving cell information or the base station identifier of the HeNB registered under the X2 gateway;

 If the first registration request message is sent by the HeNB, the registration success response message carries the serving cell information or the base station identifier of the eNB and the HeNB registered under the X2 gateway;

 If the first registration request message is sent by the eNB, the registration success response message carries the serving cell information or the base station identifier of the HeNB registered under the X2 gateway;

 If the first registration request message is sent by the HeNB, the registration success response message does not carry information of the base station registered under the X2 gateway.

 Preferably, the serving cell information or the base station identifier of the HeNB includes a TNL address of the HeNB, and/or a closed member group identifier and access mode information of the HeNB;

 The serving cell information or the base station identifier of the eNB includes a TNL address of the eNB. Preferably, the response unit is configured to: register failure, return a registration failure response message; and the registration failure response message includes one or more of the following information:

Reason for registration failure, minimum allowed waiting time, and dangerous diagnostics. Preferably, the X2 gateway further includes a notification unit, where: The notification unit is configured to: after the communication unit receives the third registration request message, forward the third registration request message to the HeNB or the eNB that is connected to the HeNB that initiates the third registration request message; or

 After the connection between the HeNB and the HeNB is disconnected, the HeNB or the eNB that is connected to the HeNB sends a fourth registration request message, carrying the base station identifier and the shutdown identifier of the HeNB. Preferably, the X2 gateway further includes a notification unit, where:

 The notification unit is further configured to: after the communication unit receives the deregistration message, forward the deregistration message to the HeNB or the eNB connected to the HeNB that initiates the deregistration message; or, between the discovery and the HeNB After the connection is disconnected, a deregistration message is sent to the HeNB or the eNB that is connected to the HeNB, where the deregistration message carries the base station identifier of the HeNB. Preferably, the X2 gateway further includes a notification unit, where:

 The notification unit is configured to: after the communication unit receives the registration update message, forward the registration update message to the HeNB or the eNB that is connected to the HeNB or the eNB that initiates the registration update message; or

 After the serving cell of the HeNB or the eNB changes, a registration update message is sent to the HeNB or the eNB connected to the HeNB or the eNB, and the ECGI of the old serving cell and the new serving cell information are carried. Preferably, the X2 gateway further includes a notification unit, where:

 The notification unit is further configured to: after the communication unit receives the registration update message, forward the registration update message to the HeNB or the eNB that is connected to the HeNB that initiates the registration update message; or

 After the connection with the HeNB is disconnected, a registration update message is sent to the HeNB or the eNB that is connected to the HeNB, and the base station identifier of the HeNB and the information indicating that the HeNB is powered off are carried. Preferably, the foregoing X2 gateway further includes a reboot notification unit, where:

The restart notification unit is configured to: receive the registration update cancellation at the communication unit After the message is forwarded, the registration update message is forwarded to the HeNB or the eNB that is connected to the HeNB that initiates the registration update message; or

 After the HeNB is powered on again, a registration update message is sent to the HeNB or the eNB that is connected to the HeNB, where the registration update message carries the base station identifier of the HeNB and information indicating that the HeNB is powered on.

 The embodiment of the invention further provides a computer program, including program instructions, when the program instruction is executed by the X2 gateway, so that the X2 gateway can execute the above method.

 Embodiments of the present invention also provide a computer program, including program instructions, that when executed by a base station, cause the base station to perform the above method.

 Embodiments of the present invention also provide a carrier carrying any of the above computer programs.

In summary, the embodiment of the present invention implements registration of the HeNB or the eNB to the X2 gateway, so that the HeNB or the eNB can communicate through the X2 gateway, thereby providing a high-quality wireless communication service for the user. BRIEF abstract

 1 is a schematic diagram of a network architecture in which a HeNB is located in a related art;

 2 is a schematic diagram of an E-UTRAN architecture with X2 GW deployment;

 3 is a schematic diagram of a successful registration process according to Embodiment 2 of the present invention;

 4 is a schematic diagram of a registration failure process according to Embodiment 2 of the present invention;

 FIG. 5 is a schematic diagram of using a registration procedure to notify a (H)eNB that is connected to a shutdown HeNB with respect to HeNB shutdown information according to Embodiment 3 of the present invention;

 FIG. 6 is a schematic diagram of using a de-registration procedure to notify a (H)eNB that is connected to a shutdown HeNB with respect to HeNB shutdown information according to Embodiment 3 of the present invention;

FIG. 7 is a schematic diagram of using a registration update procedure to notify a (H)eNB that is connected to a shutdown HeNB with respect to HeNB shutdown information according to Embodiment 3 of the present invention; 8 is a schematic flow chart of a fourth embodiment of the present invention;

 FIG. 9 is a structural diagram of a base station according to an embodiment of the present invention;

 FIG. 10 is a structural diagram of an X2 gateway according to an embodiment of the present invention. Preferred embodiment of the invention

 In order to make the objects, the technical solutions and the advantages of the present invention more clearly, the embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be noted that, in the case of no conflict, the features in the embodiments and the embodiments of the present application may be arbitrarily combined with each other.

Embodiment 1:

 This embodiment provides a method for a base station to interact with an X2 gateway, including a process of registering with the base station, where the process includes:

 The HeNB or the eNB sends a first registration request message to the X2 gateway (X2 GW); the first registration request message carries the base station identifier of the local base station, and carries the following one or more groups of information of the base station:

 Location information of the HeNB or the eNB;

 The serving cell information of the HeNB or the eNB;

 Closed member group identifier and access mode information of the HeNB;

 After receiving the first registration request message, the X2 gateway saves the matching relationship between the base station identifier and the TNL address of the HeNB or the eNB, and returns a registration response message.

 If the sender is the HeNB, the base station identifier included in the first registration request message is the HeNB ID. If the sender is the eNB, the base station identifier included in the first registration request message is the eNB ID. The RNL ID is equivalent to the base station identifier, that is, the RNL ID is equivalent to the HeNB ID, and the RNL ID is also equivalent to the eNB ID. The base station identifier is no longer distinguished from the RNL ID.

 The serving cell information includes the PLMN ID and the E-UTRAN cell global identity (E-UTRAN Cell)

Global Identifier (ECGI), Physical Cell ID (PCI), Tracking Area Code (TAC), etc. The method in this embodiment further includes a process of registering with another base station, where the X2 gateway receives the X2 setup request message sent by the HeNB but does not have the matching information of the RNL ID and the TNL address of the eNB, the second registration sent by the HeNB The request message may include a base station identifier and a TNL address of the peer network element that registers the network element;

 The process includes:

 The HeNB sends an X2 setup request message to the X2 gateway. If the X2 gateway fails to route the X2 setup request message to the opposite eNB, the second registration request message is sent to the X2 gateway, and the base station identifier of the opposite eNB and the TNL address discovery process are obtained. The TNL address of the peer eNB;

 After receiving the second registration request message, the X2 gateway saves the matching relationship between the base station identifier and the TNL address of the opposite eNB, and returns a response message.

In this embodiment, the first registration request message carries the closed member group identifier and the access mode information of the HeNB, and the X2 gateway saves the closed member group identifier and the access mode information of the HeNB after receiving the first registration request message;

 The method of this embodiment further includes: after receiving the X2 interface setup request sent by the source base station, the X2 gateway determines whether the X2 interface is allowed to be established according to the closed member group identifier and the access mode information of the source base station and the target base station.

The X2 gateway returns a registration response message to the HeNB or the eNB. If the registration is successful, the registration success response message is returned. If the registration is unsuccessful, the registration failure response message is returned.

The X2 gateway returns a registration response message to the HeNB or the eNB, where if the registration is successful, the registration success response message is returned, including:

 The registration success response message may carry a message type cell, or a message type cell and

The criticality Diagnostics cell, only let the HeNB or the eNB know that the X2 GW has successfully saved the matching relationship between the RNL ID and the TNL address of the HeNB or the eNB; The registration success response message may carry the X2 GW ID;

 The X2 gateway also carries information in the registration success response message in one of the following ways;

 If the eNB initiates the first registration request message, the registration success response message carries the serving cell information or the base station identifier of the HeNB registered under the X2 gateway;

 If the HeNB initiates the first registration request message, the registration success response message carries the serving cell information or the base station identifier of the eNB and the HeNB registered under the X2 gateway;

 Method 2:

 If the eNB initiates the first registration request message, the registration success response message carries the serving cell information or the base station identifier of the HeNB registered under the X2 gateway;

 If the HeNB initiates the first registration request message, the registration success response message does not carry the information of the base station registered under the X2 gateway.

The serving cell information or the base station identifier of the HeNB may include a TNL address of the HeNB, and/or a closed member group identifier and access mode information of the HeNB;

 The TNL address of the eNB may be included in the serving cell information of the eNB or in the base station identifier. The information in the text refers to the cells in the message.

 The registration success response message returned by the X2 gateway includes the closed member group identifier and access mode information of the HeNB registered under the X2 gateway;

 The method further includes: determining, by the HeNB or the eNB, whether the establishment of the X2 interface to the HeNB is restricted according to the closed member group identifier and the access mode information of the HeNB that is registered under the X2 gateway, and is initiated when the X2 interface is not restricted. The establishment process of the X2 interface.

The X2 gateway returns a registration response message to the HeNB or the eNB, where if the registration fails, the registration failure response message is returned, including:

The registration failure response message includes one or more of the following information: registration failure reason, minimum permitted waiting time, and dangerous diagnostic cells. The method of this embodiment further includes:

 The HeNB is normally shut down, and the HeNB sends a third registration request message with a shutdown identifier to the X2 GW before the XeNB is ready to shut down. After receiving the message, the X2 GW forwards the message to the HeNB or the eNB that is connected to the shutdown HeNB. The HeNB ID of the HeNB including the shutdown; or

The HeNB is abnormally shut down, and the X2 GW can discover that the SCTP connection between itself and the HeNB is disconnected, and initiate a fourth registration request message to the HeNB or eNB that is connected to the shutdown HeNB, and the message includes the HeNB that is shut down by the X2 GW. HeNB ID and shutdown ID.

Use the deregistration process to notify the HeNB status, including:

 The HeNB shuts down normally, and the HeNB sends a new deregistration message to the X2 GW to initially register the process before the shutdown, the message includes the HeNB ID of the shut down HeNB, and the X2 GW forwards the message to the HeNB connected to the shutdown HeNB or eNB; or,

 The HeNB is abnormally shut down, and the X2 GW can discover that the SCTP connection between itself and the HeNB is disconnected, and initiate a new deregistration message to the HeNB or eNB that is connected to the shutdown HeNB, and the message includes the HeNB ID of the HeNB that is powered off.

The method of this embodiment further includes a process of registering an update, the process comprising:

 When the serving cell of the HeNB or the eNB changes, the HeNB or the eNB may send a registration update message to the X2 GW, carrying the ECGI of the old serving cell and the new serving cell information; after receiving the registration update message, the X2 gateway forwards the registration update message. Giving a HeNB or eNB with a connection to the HeNB or eNB; or

 After the serving cell of the HeNB or the eNB changes, the X2 gateway sends a registration update message to the HeNB or the eNB connected to the HeNB or the eNB, and carries the ECGI of the old serving cell and the new serving cell information.

The method of this embodiment further includes a process of registering an update, the process comprising: When the HeNB is normally shut down, the HeNB sends a registration update message to the X2 GW to initially perform a registration update process, and includes a HeNB ID of the HeNB to be powered off and information indicating that the HeNB is powered off, and the X2 GW forwards the message to the H2GW. a HeNB or an eNB connected to the shutdown HeNB; or

 When the HeNB is abnormally shut down, the X2 GW may discover that the SCTP connection between itself and the HeNB is disconnected, and initiate a registration update message to the HeNB or eNB that is connected to the shutdown HeNB, where the message includes the HeNB ID of the HeNB to be shut down and the HeNB is shut down. Information.

The method of this embodiment further includes:

 When the powered off HeNB is powered on again, the HeNB may send a registration update message to the X2 GW, carrying the HeNB ID of the booted HeNB and the information indicating that the HeNB is powered on; after receiving the registration update message, the X2 gateway forwards the registration update message to the HeNB. a connected HeNB or eNB; or,

 After the HeNB is powered on again, the X2 gateway sends a registration update message to the HeNB or the eNB that is connected to the HeNB, and carries the base station identifier of the HeNB and information indicating that the HeNB is powered on.

 The registration update message indicates that the power-off or power-on may be represented by a separate cell, or a location information of a cell such as a base station identifier may be used as the indication information. For example, the registration update message includes: Served Cells To Add and Served Cells To Delete, the base station identifier of the shutdown is filled in the Served Cells To Delete, and the base station identifier of the boot is filled in the Served Cells To Add.

Embodiment 2:

 This embodiment is applicable to the registration of the HeNB and the eNB on the X2 GW. In this embodiment, the RNL ID and the HeNB ID are equivalent concepts, and the RNL ID and the eNB ID are equivalent concepts.

 FIG. 3 is a schematic diagram of registration success in the embodiment.

 Step 301: The HeNB or the eNB sends a new X2 message to initiate the registration process. In this embodiment, the new message name is (H)eNB REGISTER REQUEST.

(H) The eNB REGISTER REQUEST message includes a HeNB ID or an eNB ID. After the HeNB or eNB establishes an SCTP connection with the X2 GW, the HeNB or the eNB is at the (H)eNB. The HGIS ID or the eNB ID is included in the REGISTER REQUEST message. After receiving the (H)eNB REGISTER REQUEST message carrying the HeNB ID or the eNB ID, the X2 GW can establish a matching relationship between the RNL ID and the TNL address of the HeNB or the eNB.

 If the transmitting end is an eNB, the (H)eNB REGISTER REQUEST includes the eNB ID; if the transmitting end is the HeNB, the (H)eNB REGISTER REQUEST includes the HeNB ID. After receiving the (H)eNB REGISTER REQUEST message, the X2 GW saves the matching relationship between the RNL ID and the TNL address of the HeNB or the eNB for the purpose of subsequently routing the X2 message.

 (H) The eNB REGISTER REQUEST message may further include HeNB or eNB location information, serving cell information (including PLMN ID, ECGI, PCI, TAC, etc.).

 Step 302: If the registration is successful, the X2 GW successfully saves the HNL of the HeNB or the eNB.

After the matching relationship between the ID and the TNL address, the X2 GW returns a new X2 response message to the HeNB or the eNB. In this embodiment, the new response message name is (H)eNB REGISTER REQUEST ACK.

 (H) The eNB REGISTER REQUEST ACK message may carry a message type cell and/or a criticality Diagnostics, and only let the HeNB or the eNB know that the X2 GW has successfully saved the matching relationship between the RNL ID and the TNL address of the HeNB or the eNB.

 (H) The eNB REGISTER REQUEST ACK message may carry the X2 GW ID.

 (H) The eNB REGISTER REQUEST ACK message may also include the serving cell information of the (H)eNB registered under the X2 GW. If it is an eNB, the reason for returning the HeNB serving cell information or the HeNB ID in the (H)eNB REGISTER REQUEST ACK message is: the HeNB is only connected to one X2 GW, and the eNB can be connected to multiple X2 GWs, and the eNB can The HeNB serving cell information or HeNB ID returned in the (H)eNB REGISTER REQUEST ACK message is used to know which X2 GW the newly discovered target HeNB is connected to.

 If it is the HeNB, the HeNB or the eNB under the serving cell information is returned in the (H)eNB REGISTER REQUEST ACK message, or the HeNB or the eNB ID is used to: let the HeNB know whether the newly discovered HeNB or eNB is connected to the same X2 GW. of. or,

(H) The eNB REGISTER REQUEST ACK message includes only the serving cell information or the HeNB ID of the HeNB registered under the X2 GW. Since the HeNB is only connected to one X2 GW, and the eNB can be connected to multiple X2 GWs, the eNB needs to know the newly discovered target HeNB. Which one is connected to the X2 GW. Therefore, when the eNB ID included in the (H)eNB REGISTER REQUEST message is 20 bits, it is proved that the source end of the registration procedure is the eNB, and then the (H)eNB REGISTER REQUEST ACK message includes the X2 GW registered. The HeNB serves cell information or HeNB ID. When the eNB ID included in the (H)eNB REGISTER REQUEST message is 28 bits, it is proved that the source end of the registration procedure is HeNB, and then optionally, the X2 GW is included in the (H)eNB REGISTER REQUEST ACK message. The registered HeNB or eNB serves cell information, or HeNB ID or eNB ID.

 (H) The eNB REGISTER REQUEST ACK message includes the TeNB address of the HeNB or the eNB to which the serving cell belongs, and may also include the TNL address of the HeNB or the eNB to which the serving cell belongs, so that when the HeNB and the eNB pair or the HeNB and the HeNB are When establishing a connection between each other, the process of discovering the TNL address is reduced.

 (H) The HeNB ID or the eNB ID registered in the X2 GW included in the eNB REGISTER REQUEST ACK message may further include a TNL address of the HeNB or the eNB, so as to establish a connection between the HeNB and the eNB pair or between the HeNB and the HeNB pair. At the time, reduce the process of TNL address discovery.

FIG. 4 is a schematic diagram of registration failure in the embodiment.

 Step 402: If the registration fails, that is, the X2 GW cannot successfully save the matching relationship between the HRN ID and the TNL address of the HeNB or the eNB, and the X2 GW returns a new X2 response message to the HeNB or the eNB. In this embodiment, the new response message name Yes (H)eNB REGISTER REQUEST FAILURE.

 (H) The eNB REGISTER REQUEST FAILURE message includes one or more of a registration failure cause, a minimum permitted waiting time, and a critical diagnostic cell.

Embodiment 3:

The HeNB connected to the X2 GW experiences frequent power on and off. When the HeNB is shut down, the SCTP connection between the X2 GW and the HeNB is disconnected, but the HeNB or eNB of the opposite end cannot be aware that the SCTP connection between the X2 GW and the HeNB is disconnected. In this embodiment, A normal shutdown means that the HeNB can know when it will be shut down, for example, setting a specific shutdown time. Abnormal shutdown refers to a scenario where the power is suddenly turned off, so that the HeNB cannot know in advance when it is about to shut down. The HeNB or the eNB that is connected to the shutdown HeNB refers to a HeNB or an eNB that can be connected by means of a route save record or the like.

 FIG. 5 is a schematic diagram of using the registration procedure to notify the HeNB or the eNB that is connected to the shutdown HeNB about the HeNB shutdown information in the embodiment.

 Step 501: When the HeNB is normally shut down, the HeNB may carry an identifier in the (H)eNB REGISTER REQUEST message to indicate that the HeNB is powered off before being ready to shut down, for example, carrying the deregistration in the (H)eNB REGISTER REQUEST message (Deregister) The flag indicates that the HeNB is down.

 Step 502: After receiving the (H)eNB REGISTER REQUEST message with the identifier, the X2 GW forwards the message to the HeNB or the eNB that is connected to the shutdown HeNB. The HeNB eNB REGISTER REQUEST message includes the HeNB ID of the shutdown HeNB and an indication that the HeNB is down for deregister.

 When the HeNB is abnormally shut down, the HeNB may not know in advance that it is about to be shut down. The X2 GW may find that the SCTP connection between itself and the HeNB is disconnected, and then initiates a (H)eNB REGISTER REQUEST message to the HeNB connected to the shutdown HeNB or eNB. Included in the (H)eNB REGISTER REQUEST message is the HeNB ID of the shutdown HeNB discovered by the X2 GW and an indication indicating that the HeNB is down.

 Step 503: After the HeNB or the eNB obtains the information about the HeNB shutdown, the HeNB transmits

The REGISTER REQUEST ACK message is sent to the X2 GW.

 Step 504: The X2 GW forwards the (H)eNB REGISTER REQUEST ACK message to the HeNB.

FIG. 6 is a schematic diagram of using a de-registration procedure to notify a HeNB or an eNB that is connected to a shutdown HeNB with respect to HeNB shutdown information.

Step 601: When the HeNB is normally shut down, the HeNB sends a new X2 message to the X2 GW to initially perform the registration process before preparing to shut down. In this embodiment, the new message name is HeNB. DE-REGISTER. The HeNB DE-REGISTER message includes the HeNB ID of the shutdown HeNB.

 Step 602: The X2 GW forwards the HeNB DE-REGISTER message to the HeNB or eNB connected to the shutdown HeNB.

 When the HeNB is abnormally shut down, the HeNB may not predict that it will be shut down in advance, and the X2 GW may find that the SCTP connection between itself and the HeNB is disconnected, and then initiate the HeNB DE-REGISTER message to the HeNB or eNB that is connected to the shutdown HeNB. The HeNB DE-REGISTER message includes the HeNB ID of the shutdown HeNB.

 FIG. 7 is a schematic diagram of using the registration update procedure to notify the HeNB that is connected to the shutdown HeNB or the shutdown information about the HeNB in the embodiment.

 Step 701: When the HeNB is normally shut down, the HeNB sends a new X2 message to the X2 GW to initially perform a registration update process before preparing to shut down. In this embodiment, the new message name is (H)eNB REGISTER UPDATE„ ( H) The eNB REGISTER UPDATE message includes the HeNB ID of the HeNB to be powered off. When the powered off HeNB is powered on again, the HeNB may send a (H)eNB REGISTER UPDATE to include the powered HeNB ID.

 Step 702: The X2 GW forwards the (H)eNB REGISTER UPDATE message to the HeNB or eNB that is connected to the shutdown HeNB.

 When the HeNB is abnormally shut down, the HeNB may not predict in advance that the system will be shut down. The X2 GW may find that the SCTP connection between itself and the HeNB is disconnected, and then initiate a (H)eNB REGISTER UPDATE message to the HeNB connected to the shutdown HeNB or . (H) The eNB REGISTER UPDATE message includes the HeNB ID of the HeNB to be shut down. When the powered off HeNB is powered on again, the X2 GW may send a (H)eNB REGISTER UPDATE to include the powered HeNB ID.

Embodiment 4:

After the HeNB finds the eNB cell, it sends an X2 setup request message to the X2 GW. However, at this time, the X2 GW does not have the matching information of the RNL ID and the TNL address of the eNB, and the X2 GW cannot route the X2 setup request message to the newly discovered eNB. This example shows how to use the registration message to bring a new The discovered RNL ID and TNL address of the eNB are sent to the X2 GW, so that the X2 GW can correctly route the X2 setup request message.

 Step 801: The HeNB completes the registration process on the X2 GW, which is described in Embodiment 1, and therefore will not be described again.

 Step 802: After discovering the cell served by the eNB, the HeNB decides to establish an X2 connection to the eNB. Step 803: The HeNB initiates an X2 setup request message with the target eNB ID identifier to X2.

GW.

 Step 804: The X2 GW does not have a matching relationship between the RNL ID and the TNL address of the eNB, so the X2 setup failure message with the specific identifier is returned to the HeNB.

 Step 805: After receiving the X2 setup failure message with a specific identifier, the HeNB initiates a TNL address discovery process to obtain the TNL address of the eNB.

 Step 806: The HeNB sends a new message to initiate the registration process. In this embodiment, the new message name is (H)eNB REGISTER REQUEST. (H) The eNB REGISTER REQUEST message includes the RNL ID and TNL address of the eNB.

 Step 807: After the registration is successful, that is, after the X2 GW successfully saves the matching relationship between the RNL ID and the TNL address of the eNB, the X2 GW returns a new response message to the HeNB. In this embodiment, the new response message name is (H). eNB REGISTER REQUEST ACK.

 Step 808: The HeNB initiates an X2 setup request message with the target eNB ID identifier to the X2 GW, and the X2 GW routes the X2 setup request message to the eNB according to the matching relationship between the RNL ID and the TNL address of the saved eNB.

 Step 809: The eNB replies to the X2 setup response message, and the X2 GW routes the X2 setup request message to the HeNB according to the matching relationship between the saved RNL ID and the TNL address of the HeNB.

Embodiment 5:

 In the HeNB, the establishment of the current X2 interface is only for switching purposes. HeNB is sending to

The registration message of the X2 GW includes the CSG ID and access mode information. In this embodiment, the new message name is (H)eNB REGISTER REQUEST. When the HeNB or the eNB registers with the X2 GW, the X2 GW includes the X2 GW in the registration response message replied to the HeNB or the eNB. The CSG ID and access mode information of the registered HeNB, in this embodiment, the new response message name is (H)eNB REGISTER REQUEST ACK. Since the current protocol has a limitation on the scenario of the X2 handover, the X2 handover of the HeNB in the eNB to the closed mode, the X2 handover of the HeNB in the open mode to the HeNB in the closed mode, and the HeNB in the hybrid mode of the different CSG ID are performed to the closed X2 handover of the HeNB of the mode, X2 handover of the HeNB to the closed HeNB of the closed mode of different CSG IDs. The above-mentioned registration process is used to interact with the CSG ID and the access mode information, which facilitates the HeNB or the eNB to determine the establishment of the X2 interface in an unrestricted scenario, thereby avoiding the establishment of the X2 interface between the source and the target in the restricted scenario. . Of course, the HeNB may also carry the CSG ID and the access mode information in the (H)eNB REGISTER REQUEST sent to the X2 GW. In the X2 establishment process initiated by the HeNB or the eNB, the X2 GW determines whether to permit the source according to the restriction scenario. Establish an X2 interface with the target.

As shown in FIG. 9, the embodiment of the present application further provides a base station, including: a first registration unit and a communication unit, where: the first registration unit is configured to: send the first to the X2 gateway by using the communication unit. a registration request message, where the first registration request message carries the base station identifier of the local base station, and further carries the following one or more groups of information of the base station:

Location information of the HeNB or the eNB;

 The serving cell information of the HeNB or the eNB;

 Closed member group identifier and access mode information of the HeNB;

 The communication unit is configured to: send the first registration request message to the X2 gateway; the base station is an evolved home base station HeNB or an enhanced base station eNB. The base station further includes a second registration unit, where:

The second registration unit is configured to: send an X2 setup request message to the X2 gateway, and if the X2 gateway fails to route the X2 setup request message to the opposite eNB, send a second registration request message to the X2 gateway, carrying the The base station identifier of the opposite eNB and the TNL address of the opposite eNB obtained through the TNL address discovery process. The base station further includes a determining unit, where: The determining unit is configured to: determine, according to the closed member group identifier and the access mode of the HeNB that is registered in the X2 gateway that is included in the registration success response message received by the communication unit, whether the X2 interface establishment initiated by the HeNB is restricted The process of establishing the X2 interface is initiated when it is not restricted.

 The base station further includes a third registration unit, where:

 The third registration unit is configured to send a third registration request message to the X2 gateway before the HeNB is shut down, and carry the shutdown identifier and the base station identifier of the HeNB.

 The base station further includes a deregistration unit, where:

 The de-registration unit is configured to send a de-registration message to the X2 gateway before the HeNB is shut down, and include the base station identifier of the HeNB in the de-registration message.

 The base station further includes a registration update unit, where:

 The registration update unit is configured to: when the serving cell changes, send a registration update message to the X2 gateway, and carry the evolved universal land-based radio access network cell global identity ECGI and the new serving cell information of the old serving cell.

 The base station further includes a registration update unit, where:

 The registration update unit is configured to: send a registration update message to the X2 gateway before the HeNB is shut down, and carry the base station identifier of the HeNB and information indicating that the HeNB is powered off.

 The base station further includes a rebooting update unit, where:

 The focus on the boot update unit is configured to: after the powered off HeNB is powered on again, the HeNB sends a registration update message to the X2 GW, carrying the base station identifier of the HeNB and information indicating that the HeNB is powered on.

As shown in FIG. 10, an embodiment of the present application further provides an X2 gateway, including: a communication unit, a matching relationship holding unit, and a response unit, where:

 The communication unit is configured to: receive and send a message;

The matching relationship holding unit is configured to: after the communication unit receives the first registration request message, save a matching relationship between the base station identifier of the evolved home base station HeNB or the enhanced base station eNB and the transport network layer TNL address; The response unit is configured to: return a registration response message.

 The matching relationship holding unit is further configured to: after the communication unit receives the second registration request message, save the matching relationship between the base station identifier and the TNL address of the opposite eNB, and return a response message.

 The X2 gateway further includes a determining unit, where:

 The determining unit is configured to: after receiving the first registration request message, save the closed member group identifier and access mode information of the HeNB, and receive the X2 interface establishment request sent by the source base station in the communication unit Then, it is determined whether the X2 interface is allowed to be established according to the closed member group identifier and the access mode of the source base station and the target base station.

 The response unit is configured to: register successfully, return a registration success response message, carry a message type cell, or a message type cell and a danger diagnosis cell, so that the HeNB or the eNB learns that the X2 gateway has successfully saved the HeNB or The matching relationship between the base station identifier of the eNB and the TNL address.

 The registration success response message also carries an X2 gateway identifier.

 The response unit is further configured to carry information in the registration success response message in one of the following manners;

 method one:

 If the eNB initiates the first registration request message, the registration success response message carries the serving cell information or the base station identifier of the HeNB registered under the X2 gateway;

 If the HeNB initiates the first registration request message, the registration success response message carries the serving cell information or the base station identifier of the eNB and the HeNB registered under the X2 gateway;

 Method 2:

 If the eNB initiates the first registration request message, the registration success response message carries the serving cell information or the base station identifier of the HeNB registered under the X2 gateway;

 If the HeNB initiates the first registration request message, the registration success response message does not carry the information of the base station registered under the X2 gateway.

The serving cell information or the base station identifier of the HeNB includes a TNL address of the HeNB, and/or a closed member group identifier and access mode information of the HeNB; The serving cell information or the base station identifier of the eNB includes a TNL address of the eNB. The response unit is configured to: register failure, return a registration failure response message; and the registration failure response message includes one or more of the following information:

 Reason for registration failure, minimum allowed waiting time, and dangerous diagnostics.

 The X2 gateway includes a notification unit, where:

 The notification unit is configured to: after the communication unit receives the third registration request message, forward the third registration request message to the HeNB or the eNB that is connected to the HeNB that initiates the third registration request message; or

 After the connection between the HeNB and the HeNB is disconnected, the HeNB or the eNB that is connected to the HeNB sends a fourth registration request message, carrying the base station identifier and the shutdown identifier of the HeNB.

 The X2 gateway further includes a notification unit, where:

 The notification unit is further configured to: after the communication unit receives the deregistration message, forward the deregistration message to the HeNB or the eNB connected to the HeNB that initiates the deregistration message; or, between the discovery and the HeNB After the connection is disconnected, a deregistration message is sent to the HeNB or the eNB that is connected to the HeNB, and the base station identifier of the HeNB is carried.

 The X2 gateway further includes a notification unit, where:

 The notification unit is configured to: after the communication unit receives the registration update message, forward the registration update message to the HeNB or the eNB that is connected to the HeNB or the eNB that initiates the registration update message; or

 After the serving cell of the HeNB or the eNB changes, a registration update message is sent to the HeNB or the eNB connected to the HeNB or the eNB, and the ECGI of the old serving cell and the new serving cell information are carried.

 The X2 gateway further includes a notification unit, where:

 The notification unit is further configured to: after the communication unit receives the registration update message, forward the registration update message to the HeNB or the eNB that is connected to the HeNB that initiates the registration update message; or

After discovering that the connection with the HeNB is broken, to the HeNB having the connection with the HeNB or The eNB sends a registration update message, carrying the base station identifier of the HeNB and information indicating that the HeNB is powered off.

 The X2 gateway further includes a reboot notification unit, where:

 The restart notification unit is configured to: after the communication unit receives the registration update message, forward the registration update message to a HeNB or an eNB that is connected to the HeNB that initiates the registration update message; or

 After the HeNB is powered on again, the HeNB or the eNB that is connected to the HeNB sends a registration update message, and carries the base station identifier of the HeNB and information indicating that the HeNB is powered on.

The embodiment of the present application further provides a computer program, including program instructions, when the program instruction is

When the X2 gateway is executed, the X2 gateway can perform the above method.

 The embodiment of the present application further provides a computer program, including program instructions, when the program instruction is executed by a base station, so that the base station can perform the above method.

 The embodiment of the present application also provides a carrier carrying any of the above computer programs.

The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention. The present invention may be embodied in various other embodiments without departing from the spirit and scope of the invention. Various changes and modifications may be made to the invention, and such changes and modifications are intended to be included within the scope of the appended claims. Obviously, those skilled in the art should understand that the above modules or steps of the present invention can be implemented by a general-purpose computing device, which can be concentrated on a single computing device or distributed over a network composed of multiple computing devices. Alternatively, they may be implemented by program code executable by the computing device, such that they may be stored in the storage device by the computing device and, in some cases, may be different from the order herein. The steps shown or described are performed, or they are separately fabricated into individual integrated circuit modules, or a plurality of modules or steps are fabricated as a single integrated circuit module. Thus, the invention is not limited to any specific combination of hardware and software. Industrial applicability

 The embodiment of the present invention implements registration of the HeNB or the eNB to the X2 gateway, so that the HeNB or the eNB can communicate through the X2 gateway, thereby providing high quality wireless communication services for the user.

Claims

claims 1. A method for interaction between a base station and an X2 gateway, including a process of registering the base station. The process includes: The X2 gateway receives a first registration request message sent by an evolved home base station HeNB or an enhanced base station eNB. The first registration request message carries the base station identity of the HeNB or eNB and also carries the following one of the HeNB or eNB. Group or multiple groups of information: The location information of the HeNB or eNB; The serving cell information of the HeNB or eNB; The HeNB's closed member group identity and access mode information; After receiving the first registration request message, the X2 gateway saves the matching relationship between the base station identity of the HeNB or eNB and the transmission network layer TNL address, and returns a registration response message. 2. The method of claim 1, further comprising a process of registering other base stations, the process includes: The X2 gateway receives the X2 establishment request message sent by the HeNB. If the X2 gateway cannot route the X2 establishment request message to the opposite eNB, the X2 gateway receives the second registration request message sent by the HeNB. The second registration request message is sent by the HeNB. The registration request message carries the base station identity of the opposite eNB and the TNL address of the opposite eNB obtained through the TNL address discovery process; After receiving the second registration request message, the X2 gateway saves the matching relationship between the base station identifier of the peer eNB and the TNL address, and returns a response message. 3. The method according to claim 1 or 2, wherein: The first registration request message carries the HeNB's closed member group identity and access mode information. After receiving the first registration request message, the X2 gateway saves the HeNB's closed member group identity and access mode information. ; The method also includes: After receiving the X2 interface establishment request sent by the source base station, the X2 gateway determines whether to allow establishment of the X2 interface based on the closed member group identifiers and access mode information of the source base station and the target base station. 4. The method of claim 1, wherein returning the registration response message includes: The X2 gateway registers successfully and returns a registration success response message. The successful response message carries a message type information element, or a message type information element and a danger diagnosis information element, so that the HeNB or eNB learns that the X2 gateway has successfully saved the HeNB or The matching relationship between the eNB's base station identifier and the TNL address. 5. The method of claim 4, wherein: The registration success response message also carries the X2 gateway identifier. 6. The method of claim 4 or 5, wherein: The X2 gateway also carries information in the registration success response message according to one of the following methods; Method 1: If the first registration request message is sent by the eNB, the registration success response message carries the serving cell information or base station identification of the HeNB registered under the X2 gateway; If the first registration request message is sent by the HeNB, the registration success response message carries the serving cell information or base station identification of the eNB and HeNB registered under the X2 gateway; Method 2: If the first registration request message is sent by the eNB, the registration success response message carries the serving cell information or base station identification of the HeNB registered under the X2 gateway; If the first registration request message is sent by the HeNB, the registration success response message does not carry information about base stations registered under the X2 gateway. 7. The method of claim 6, wherein: The HeNB's serving cell information or base station identity includes the HeNB's TNL address, and/or, the HeNB's closed member group identity and access mode information; The serving cell information or base station identity of the eNB includes the TNL address of the eNB. 8. The method according to claim 1 or 2, wherein: The registration success response message returned by the X2 gateway includes the closed member group identity and access mode information of the HeNB registered under the X2 gateway. 9. The method according to claim 1 or 2, wherein: The X2 gateway fails to register and returns a registration failure response message; the registration failure response message includes one or more of the following information: Registration failure reasons, minimum allowed wait time, and hazard diagnostic cells. 10. The method of claim 1 or 2, further comprising: The X2 gateway receives the third registration request message sent by the HeNB before shutting down, and the third registration request message carries the HeNB shutdown identifier and base station identifier; the X2 gateway receives the third registration request message. Afterwards, forward the third registration request message to the HeNB or eNB connected to the HeNB; or, After discovering that the connection with the HeNB is disconnected, the X2 gateway sends a fourth registration request message to the HeNB or eNB connected to the HeNB. The fourth registration request message carries the base station identity of the HeNB. and shutdown logo. 11. The method of claim 1 or 2, further comprising a de-registration process, which process includes: the X2 gateway receiving a de-registration message sent by the HeNB before shutting down, the de-registration message carrying the HeNB The base station identification; After receiving the de-registration message, the X2 gateway forwards the de-registration message to the HeNB or eNB connected to the HeNB; or, After discovering that the connection with the HeNB is disconnected, the X2 gateway sends a deregistration message to the HeNB or eNB connected to the HeNB, carrying the base station identity of the HeNB. 12. The method of claim 1 or 2, further comprising a registration update process, which process includes: When the serving cell of HeNB or eNB changes, the X2 gateway receives the registration update message sent by the HeNB or eNB. The registration update message carries the evolved universal land-based radio access network cell global identity ECGI of the old serving cell and the new one. Serving cell information; after receiving the registration update message, the X2 gateway forwards the registration update message to the HeNB or eNB connected to the HeNB or eNB; or, After the serving cell of the HeNB or eNB changes, the X2 gateway sends a registration update message to the HeNB or eNB connected to the HeNB or eNB, carrying the ECGI of the old serving cell and the new one. service area information. 13. The method of claim 1, further comprising a registration update process, which process includes: the X2 gateway receiving a registration update message sent by the HeNB before shutting down, and the registration update message carries the base station of the HeNB Information identifying and indicating that HeNB is shut down; After receiving the registration update message, the X2 gateway forwards the registration update message to the HeNB or eNB connected to the HeNB; or, After discovering that the connection with the HeNB is disconnected, the X2 gateway sends a registration update message to the HeNB or eNB connected to the HeNB, carrying the base station identifier of the HeNB and information indicating that the HeNB is shut down. 14. The method of claim 1 or 13, further comprising: The X2 gateway receives the registration update message sent after the powered-off HeNB is powered on again. The registration update message carries the base station identification of the HeNB and information indicating that the HeNB is powered on; after the X2 gateway receives the registration update message, Forward the registration update message to the HeNB or eNB connected to the HeNB; or, After the HeNB is powered on again, the X2 gateway sends a registration update message to the HeNB or eNB connected to the HeNB. The registration update message carries the base station identifier of the HeNB and information indicating that the HeNB is powered on. 15. A method for interaction between a base station and an X2 gateway, including a process of registering the base station. The process includes: The evolved home base station HeNB or enhanced base station eNB sends the first registration request message to the X2 gateway; The first registration request message carries the base station identity of the HeNB or eNB, and also carries one or more sets of the following information of the HeNB or eNB: The location information of the HeNB or eNB; The serving cell information of the HeNB or eNB; The HeNB's closed member group identity and access mode information. 16. The method of claim 15, further comprising a process of registering other base stations, the process including: HeNB sends an X2 establishment request message to the X2 gateway. If the X2 gateway cannot route the X2 establishment request message to the opposite eNB, HeNB sends a second registration request message to the X2 gateway, carrying the base station identification and pass of the opposite eNB. The TNL address of the counterpart eNB obtained through the TNL address discovery process. 17. The method of claim 15 or 16, further comprising: The HeNB or eNB receives the registration success response message returned by the X2 gateway, and the registration success response message includes the closed member group identity and access mode information of the HeNB registered under the X2 gateway; The HeNB or eNB determines whether initiating X2 interface establishment to the HeNB is restricted based on the closed member group identity and access mode information of the HeNB registered under the X2 gateway, and initiates the establishment of the X2 interface when it is not restricted. process. 18. The method of claim 15 or 16, further comprising: Before shutting down, the HeNB sends a third registration request message to the X2 gateway, carrying the HeNB's shutdown identifier and base station identifier. 19. The method of claim 15 or 16, further comprising: Before shutting down, the HeNB sends a de-registration message to the X2 gateway, and the de-registration message contains the base station identification of the HeNB; after receiving the de-registration message, the X2 gateway forwards the de-registration message to the X2 gateway. The HeNB has a connected HeNB or eNB. 20. The method of claim 15 or 16, further comprising: When the serving cell of HeNB or eNB changes, a registration update message is sent to the X2 gateway, carrying the evolved universal land-based radio access network cell global identifier ECGI of the old serving cell and the new serving cell information; the X2 gateway receives After the registration update message is received, the registration update message is forwarded to the HeNB or eNB connected to the HeNB or eNB. 21. The method of claim 15, further comprising: Before shutting down, the HeNB sends a registration update message to the X2 gateway, carrying the base station identification of the HeNB and information indicating that the HeNB shuts down; after receiving the registration update message, the X2 gateway forwards the registration update message to the X2 gateway. The HeNB has a connected HeNB or eNB. 22. The method of claim 15 or 21, further comprising: When the powered-off HeNB is powered on again, the HeNB sends a registration update message to the X2 GW, carrying the base station identification of the HeNB and information indicating that the HeNB is powered on; after receiving the registration update message, the X2 gateway forwards The registration update message is given to the HeNB or eNB connected to the HeNB. 23. A base station, including: a first registration unit and a communication unit, wherein: The first registration unit is configured to: send a first registration request message to the X2 gateway through the communication unit, the base station is an evolved home base station HeNB or an enhanced base station eNB, and the first registration request message carries the The base station identifier of the base station also carries one or more sets of the following information about the base station: Location information of HeNB or eNB; Serving cell information of HeNB or eNB; HeNB’s closed member group identity and access mode information; The communication unit is configured to send the first registration request message to the X2 gateway. 24. The base station of claim 23, further comprising a second registration unit, wherein: the second registration unit is configured to: send an X2 establishment request message to the X2 gateway, if the X2 gateway cannot The X2 establishment request message is routed to the opposite eNB, and a second registration request message is sent to the X2 gateway, carrying the base station identity of the opposite eNB and the TNL address of the opposite eNB obtained through the transport network layer TNL address discovery process. . 25. The base station according to claim 23 or 24, further comprising a judgment unit, wherein: the judgment unit is configured to: register under the X2 gateway according to the registration success response message received by the communication unit. HeNB’s closed member group identification and access mode, judge Initiate to the HeNB whether the establishment of the X2 interface is restricted, and initiate the establishment process of the X2 interface if it is not restricted. 26. The base station according to claim 23 or 24, further comprising a third registration unit, wherein: the third registration unit is configured to: before the HeNB is shut down, send a third registration request message to the X2 gateway , the third registration request message carries the shutdown identification and base station identification of the HeNB where it is located. 27. The base station according to claim 23 or 24, further comprising a de-registration unit, wherein: the de-registration unit is configured to: before the HeNB is shut down, send a de-registration message to the X2 gateway, the de-registration message It carries the base station identification of the HeNB where it is located. 28. The base station according to claim 23 or 24, further comprising a registration update unit, wherein: the registration update unit is configured to: when the serving cell changes, send a registration update message to the X2 gateway, the registration The update message carries the evolved common land-based radio access network cell global identifier ECGI of the original serving cell and the new serving cell information. 29. The base station according to claim 23, further comprising a registration update unit, wherein: the registration update unit is configured to: before the HeNB is shut down, send a registration update message to the X2 gateway, the registration update message It carries the base station identification of the HeNB and information indicating that the HeNB is shut down. 30. The base station according to claim 23 or 29, further comprising a restart update unit, wherein: the startup-focused update unit is configured to: send a registration update message to the X2 gateway after the powered-off HeNB is powered on again, The registration update message carries the base station identification of the HeNB and information indicating that the HeNB is powered on. 31. An X2 gateway, including: a communication unit, a matching relationship saving unit and a response unit, where: The communication unit is configured to receive and send messages; The matching relationship saving unit is configured to: receive the first registration request at the communication unit After sending the message, save the matching relationship between the base station identifier of the evolved home base station HeNB or the enhanced base station eNB and the transmission network layer TNL address; The response unit is configured to return a registration response message. 32. The X2 gateway as claimed in claim 31, wherein: The matching relationship saving unit is further configured to: after the communication unit receives the second registration request message, save the matching relationship between the base station identifier of the opposite eNB and the TNL address, and return a response message. 33. The X2 gateway according to claim 31 or 32, further comprising a judgment unit, wherein: the judgment unit is configured to: save the HeNB's closed member group identification and access mode information, and after the communication unit receives the X2 interface establishment request sent by the source base station, it determines whether to allow establishment of the X2 interface based on the closed member group identifiers and access modes of the source base station and the target base station. 34. The X2 gateway as claimed in claim 31, wherein: The response unit is set to: upon successful registration, return a registration success response message, carrying a message type information element, or a message type information element and a danger diagnosis information element, so that the HeNB or eNB learns that the X2 gateway has successfully saved the HeNB or The matching relationship between the eNB's base station identifier and the TNL address. 35. The X2 gateway as claimed in claim 34, wherein: The registration success response message also carries the X2 gateway identifier. 36. The X2 gateway as claimed in claim 34 or 35, wherein: The response unit is also configured to carry information in the registration success response message in one of the following ways; method one: If the first registration request message is sent by the eNB, the registration success response message carries the serving cell information or base station identification of the HeNB registered under the X2 gateway; If the first registration request message is sent by the HeNB, the registration success response message The information carries the serving cell information or base station identification of the eNB and HeNB registered under the X2 gateway; Method 2: If the first registration request message is sent by the eNB, the registration success response message carries the serving cell information or base station identification of the HeNB registered under the X2 gateway; If the first registration request message is sent by the HeNB, the registration success response message does not carry information about base stations registered under the X2 gateway. 37. The X2 gateway as claimed in claim 36, wherein: The HeNB's serving cell information or base station identity includes the HeNB's TNL address, and/or, the HeNB's closed member group identity and access mode information; The serving cell information or base station identity of the eNB includes the TNL address of the eNB. 38. The X2 gateway as claimed in claim 31 or 32, wherein: The response unit is set to: If registration fails, a registration failure response message is returned; The registration failure response message includes one or more of the following information: Registration failure reasons, minimum allowed wait time, and hazard diagnostic cells. 39. The X2 gateway according to claim 31 or 32, further comprising a notification unit, wherein: the notification unit is configured to: after the communication unit receives the third registration request message, forward the third registration request The message is given to the HeNB or eNB connected to the HeNB that initiated the third registration request message; or, After discovering that the connection with the HeNB is disconnected, a fourth registration request message is sent to the HeNB or eNB connected to the HeNB, carrying the base station identification and shutdown identification of the HeNB. 40. The X2 gateway according to claim 31 or 32, further comprising a notification unit, wherein: the notification unit is further configured to: after the communication unit receives the de-registration message, forward the de-registration message to The HeNB that initiated the de-registration message has a connected HeNB or eNB; or, after discovering that the connection with the HeNB is disconnected, a de-registration message is sent to the HeNB or eNB that is connected to the HeNB, and the de-registration message carries the Describe the base station identification of HeNB. 41. The X2 gateway according to claim 31 or 32, further comprising a notification unit, wherein: the notification unit is configured to: after the communication unit receives the registration update message, forward the registration update message to the initiator The HeNB or eNB registering the update message has a connected HeNB or eNB; or, After the serving cell of the HeNB or eNB changes, a registration update message is sent to the HeNB or eNB connected to the HeNB or eNB, carrying the ECGI of the old serving cell and the new serving cell information. 42. The X2 gateway as claimed in claim 31, further comprising a notification unit, wherein: The notification unit is also configured to: after the communication unit receives the registration update message, forward the registration update message to the HeNB or eNB connected to the HeNB that initiated the registration update message; or, After discovering that the connection with the HeNB is disconnected, a registration update message is sent to the HeNB or eNB connected to the HeNB, carrying the base station identification of the HeNB and information indicating that the HeNB is shut down. 43. The X2 gateway as claimed in claim 31 or 32, further comprising a restart notification unit, wherein: The restart notification unit is configured to: after the communication unit receives the registration update message, forward the registration update message to a HeNB or eNB connected to the HeNB that initiated the registration update message; or, After the HeNB is powered on again, a registration update message is sent to the HeNB or eNB connected to the HeNB. The registration update message carries the base station identifier of the HeNB and information indicating that the HeNB is powered on. 44. A computer program, including program instructions. When the program instructions are executed by the X2 gateway, the X2 gateway can execute the method described in any one of claims 1-14. 45. A computer program, including program instructions. When the program instructions are executed by a base station, the base station can execute the method described in any one of claims 15-22. 46. A carrier carrying the computer program of claim 44 or 45.