CN102833797A - Method and equipment for determining switching type of HeNB (Home enhanced Node) - Google Patents

Abstract

The invention discloses a method and equipment for determining a switching type of a HeNB (Home enhanced Node). The method comprises the following steps that: a HeNB gateway carries out prejudgment according to a serving cell, a neighbour cell and a mobile management entity pool (MME pool) of the HeNB with an X2 interface, which are stored, and generates X2 switching related information; and the HeNB gateway sends the X2 switching related information to the HeNB by an S2 special message so as to ensure the HeNB to determine the switching type according to the X2 switching related information when the HeNB needs to be switched. By the method and the equipment for determining the switching type of the HeNB, the switching delay of the HeNB can be effectively reduced.

Description

Method and device for determining switching type of home base station

Technical Field

The invention relates to a femtocell switching technology in the field of wireless communication, in particular to a method and equipment for determining the switching type of a femtocell.

Background

The home base station is a small low-power base station and is mainly used in small-range indoor places such as homes, offices and the like. The femtocell is connected to a core network of a mobile operator through wired access equipment such as an indoor cable, a Digital Subscriber Line (DSL) or an optical fiber and the like, and provides an access service based on a wireless mobile communication network for a specific user. The method is an effective supplement to the existing network deployment, can effectively improve indoor voice and high-speed data service coverage, and has many advantages, such as low cost, low power, simple access, plug and play, backhaul saving, compatibility with the existing terminal, and network coverage improvement.

A home base station in a Long Term Evolution (LTE) system is called henb (home enb). The functions supported by the HeNB are basically consistent with the eNB, and the processes between the HeNB and the Packet Core Evolution (EPC) are basically consistent with those between the eNB and the EPC. The deployment of henbs is typically not subject to network planning by mobile operators, small coverage and numerous. For more convenient management and to support a larger number of henbs, under an Evolved Universal Terrestrial Radio Access Network (E-UTRAN) architecture, a new Network element HeNB GW (Home base station gateway) may also be introduced between the henbs and the S1 connection of the EPC. The HeNB may connect to a Mobility Management Entity (MME) as an S1 proxy through the HeNB GW, where the HeNB GW relays an S1 dedicated message related to a User Equipment (UE), and terminates an S1 process that is not related to the UE, that is, the HeNBGW receives the S1 public message, analyzes the public message, and then sends the public message to a target node. The HeNBs can be directly connected through an X2 interface, and load balancing, switching optimization, information interaction and the like are performed.

The architecture of a Relay Node (RN) is similar to that of a home base station, the RN provides functions and services similar to those of a normal eNB to UEs accessing its cell, and accesses an eNB serving the RN through a radio interface in a manner similar to that of the normal UE, where the eNB serving the RN is called a donor base station (DonoreNB), which is abbreviated as DeNB. The DeNB may serve as both an S1 proxy and an X2 proxy. The RN can be connected with the MME through the S1 proxy function of the DeNB and can also be connected with other base station nodes through the X2 proxy function of the DeNB, and the architecture has strong flexibility and high efficiency. Whereas the HeNB GW acts only as S1 proxy in the current LTE standard. Considering that the hnb may be deployed in public places such as schools, shopping malls, etc. or in enterprises, this results in many hnbs being deployed in a relatively small area. Although the X2 direct interfaces between the femtocells have many advantages, under the condition that there are many femtocells, because the femtocells have the characteristics of plug and play, plug and play at any time, and as user equipment, operators cannot plan and deploy effectively, the number of the X2 direct interfaces between the femtocells becomes huge, and the interfaces are extremely complex to establish and maintain and are not easy to manage. In combination with the above considerations, it is reasonable and necessary that the HeNB GW functions as an X2 proxy node.

The UE is switched between HeNBs by two switching processes: s1 switching or X2 switching. If the MME performs access control, an S1 switching process is adopted; if the MME is not required to perform access control and the basic conditions of X2 handover (an X2 interface exists between the source base station and the target base station and the source base station and the target base station is connected to the same MME pool (MME pool)) are met, the X2 handover procedure may be adopted. There are two ways for data forwarding in the handover procedure: the S1 mode and the X2 mode. If an X2 direct interface exists between henbs, data forwarding in the handover process can be transferred through the X2 direct interface without being transferred through a core network element through an S1 interface.

In the existing procedure, the UE sends a measurement report to the serving base station, and the serving base station determines to initiate a handover procedure and select a handover target base station based on the measurement report, and then determines a handover type of the handover, which may cause a certain delay.

Disclosure of Invention

In view of the above, the present invention provides a method and an apparatus for determining a handover type of a home base station, so as to reduce a handover delay of the home base station.

In order to achieve the purpose, the technical scheme of the invention is realized as follows:

the invention provides a method for determining the switching type of a home base station, which comprises the following steps:

the femtocell gateway performs prejudgment according to a stored serving cell, an adjacent cell and a mobile management entity pool (MME pool) of the femtocell with an X2 interface, and generates X2 switching related information;

and the home base station gateway sends the X2 handover related information to the home base station through an S1 dedicated message, so that the home base station determines the handover type according to the X2 handover related information when needing handover.

The X2 handover-related information at least includes: a list of target home base stations that are allowed to initiate an X2 handover, and a list of data forwarding manners associated with the target home base stations.

The S1 dedicated message includes: an initial context setup request message, a path transfer request response message, an S1 handover request message, a user context modification request message.

The method further comprises the following steps:

when the femtocell gateway detects that the X2 handover-related information changes, informing the corresponding femtocell through a user context modification request message.

The handover types include:

an S1 switching process is adopted, and a S1 mode is adopted for data forwarding;

adopting an S1 switching process, and adopting an X2 mode for data forwarding;

and an X2 switching process is adopted, and an X2 mode is adopted for data forwarding.

The invention also provides a home base station gateway, comprising: the system comprises an information generating module and an information sending module; wherein,

the information generating module is used for carrying out prejudgment according to the stored serving cell, neighboring cell and MME pool of the femtocell with the X2 interface, and generating X2 switching related information;

the information sending module is configured to send the generated X2 handover-related information to the femtocell through an S1 dedicated message.

The X2 handover-related information at least includes: a list of target home base stations that are allowed to initiate an X2 handover, and a list of data forwarding manners associated with the target home base stations.

The S1 dedicated message includes: an initial context setup request message, a path transfer request response message, an S1 handover request message, a user context modification request message.

The information sending module is further configured to notify the corresponding home base station through a user context modification request message when detecting that the X2 handover-related information changes.

The present invention also provides a home base station, including: the device comprises an information receiving module and a switching type determining module; wherein,

the information receiving module is configured to receive an S1 dedicated message sent by a femtocell gateway, where the S1 dedicated message includes X2 handover related information;

the switching type determining module is used for selecting a target femtocell for switching according to the X2 switching related information and determining a switching type; and the related information of the X2 handover is pre-judged and determined by the femtocell gateway according to the stored serving cell, neighboring cell and MME pool of the femtocell with the X2 interface.

According to the method and the device for determining the switching type of the home base station, provided by the invention, under the scene that the source home base station and the target home base station both make S1 proxy and X2 proxy through the home base station gateway, the switching type is judged in advance through the home base station gateway, and the judgment result is sent to the home base station through the S1 special message, so that the HeNB switching delay can be effectively reduced.

Drawings

FIG. 1 is an E-UTRAN architecture diagram of different HeNBs connected in the same HeNB GW scenario in the embodiment of the present invention;

FIG. 2 is an E-UTRAN architecture diagram in which different HeNBs are connected to different HeNB GW scenarios in the embodiment of the present invention;

fig. 3 is a flowchart of a method for determining a handover type of a femtocell according to a first embodiment of the present invention;

fig. 4 is a flowchart of a method for determining a handover type of a home base station according to a second embodiment of the present invention;

fig. 5 is a flowchart of a method for determining a handover type of a femtocell according to a third embodiment of the present invention;

fig. 6 is a flowchart of a method for determining a handover type of a femtocell according to a fourth embodiment of the present invention;

fig. 7 is a flowchart of a method for determining a handover type of a home base station according to the present invention.

Detailed Description

The technical solution of the present invention is further elaborated below with reference to the drawings and the specific embodiments.

The embodiment of the invention is based on the premise that the HeNB GW is used as the network architecture of the X2 proxy, and the source HeNB and the target HeNB both use the HeNB GW to make the S1 proxy and the X2 proxy.

Figure 1 depicts an E-UTRAN architecture diagram of different home base stations connected in the same home base station gateway scenario. In this scenario, the HeNB a and the HeNB are connected to the MME by making S1 proxy through the HeNB GW, and the HeNB a and the HeNB establish an X2 interface by making X2 proxy through the HeNB GW. In the process of establishing an X2 interface between the HeNB and the HeNB GW, the HeNB GW stores the information of the serving cell, the neighboring cell and the MME pool in an X2 interface establishment request (X2 setup request) message sent by the HeNB, namely the HeNB GW stores the information of the serving cell, the neighboring cell and the MME pool of the HeNB with the X2 interface.

Figure 2 depicts an E-UTRAN architecture diagram with different home base stations connected in different home base station gateway scenarios. In this scenario, the HeNB a is connected to the MME through S1 proxy by HeNB GW1, and the HeNB is connected to the MME through S1 proxy by HeNB GW 2. And the HeNB A and the HeNB establish an X2 interface by making an X2 proxy through the HeNB GW1 and the HeNB GW 2. As shown in fig. 2, an X2 interface needs to be established between the HeNB GW1 and the HeNB GW1, and in the process of establishing the X2 interface, the HeNB GW1 and the HeNBGW2 need to interact with serving cell, neighboring cell, and MME pool information of the HeNB connected to the HeNB GW 2.

Under the framework that the HeNB GW makes an X2 proxy, the HeNB can consider that the HeNB and the HeNB which has established an X2 interface with the HeNB GW have an X2 interface only by establishing a request/response (X2 setup request/response) with the HeNB GW through an X2 interface to establish an X2 interface. Particularly, for a scenario in which the HeNB is connected to different HeNB GWs, if an X2 interface has been established between the HeNB GW1 and the HeNB GW2, an X2 interface is established between the HeNB a and the HeNB GW1, so that it can be considered that the HeNB a and the HeNB that has established an X2 interface with the HeNB GW1 have an X2 interface, and the HeNB a and the HeNB that has established an X2 interface with the HeNB GW2 also have an X2 interface. In this scenario, when the UE is handed over between henbs, the HeNB GW connected to the source HeNB performs handover type determination in advance. Since the two scenarios have great commonality in this document, only the scenario in which different hnbs are connected to the same hnb gateway will be described in detail herein, and the situation in which different hnbs are connected to different hnb gateway scenarios is similar to the scenario.

The method for determining the switching type of the femtocell provided by the embodiment of the invention, as shown in fig. 3, mainly comprises the following steps:

step 301, the HeNB GW performs prejudgment according to the stored serving cell, neighboring cell, and MME pool information of the HeNB having the X2 interface, and generates X2 handover related information, which at least includes: a list of target home base stations that are allowed to initiate an X2 handover (i.e. a list of target home base stations that the HeNB can initiate an X2 handover), and a list of data forwarding manners associated with the target home base stations. The data forwarding mode comprises the following steps: the S1 mode and the X2 mode.

Specifically, the method comprises the following steps: if an X2 interface exists between the source HeNB and the target HeNB and the source HeNB and the target HeNB are connected on the same MME pool, the HeNB GW adds the eNB ID of the target HeNB to a target HeNB list which allows the initiation of X2 handover in the X2 handover related information; if an X2 interface exists between the source HeNB and the target HeNB, the data forwarding mode is an X2 mode, if an X2 interface does not exist between the source HeNB and the target HeNB, the data forwarding mode is an S1 mode, and the HeNB GW adds the data forwarding mode associated with the target HeNB to the X2 related information.

In step 302, the HeNB GW sends X2 handover related information to the source HeNB.

Step 303, the UE sends a measurement report to the source HeNB.

And step 304, the source HeNB performs handover judgment according to the measurement report and the X2 handover related information, selects a target home base station for handover and determines a handover type. The switching types include the following three types:

an S1 switching process is adopted, and a S1 mode is adopted for data forwarding;

adopting an S1 switching process, and adopting an X2 mode for data forwarding;

and an X2 switching process is adopted, and an X2 mode is adopted for data forwarding.

Step 305, when the MME finds that the context of the UE is modified, it sends a UE context modification request message to notify the source HeNB. Since the HeNB is proxied to the MME as S1 through the HeNB GW, the MME first sends the message to the proxy node HeNB GW. The HeNB GW receives the message and adds the updating of the X2 switching related information into the message, and sends the UE context modification request message added with the updating of the X2 switching related information to the source HeNB.

Step 306, if the source HeNB determines that the X2 handover condition is satisfied, executing an X2 handover procedure; if the X2 switching condition is not satisfied, the S1 switching flow is executed.

The following is a detailed description of specific embodiments.

The first embodiment of the present invention describes a scenario in which a HeNB GW sends X2 handover-related information to a HeNB in an initial context establishment process, as shown in fig. 4, the first embodiment mainly includes the following steps:

step 401, in the attach process or the service request or the tracking area update process, after the UE completes RRC connection establishment with the serving base station, sending an RRC connection establishment completion message to the serving base station to trigger an initial context establishment process, where the message carries NAS information received by the UE from an upper layer. The NAS information may be an attach request (attach request), or a service request (service request), or a tracking area update request (TAU request).

Step 402, after receiving the RRC connection setup complete message, the source base station sends an initial user message to the MME to continue the initial context setup process, where the message carries an NAS PDU (which may be an attach request, a service request, or a TAU request). The source HeNB is connected to the MME as an S1 proxy through the HeNB GW, so after the source HeNB sends the message to the proxy node HeNB GW, the HeNBGW sends the message to the MME.

In step 403, after receiving the initial user message, the MME performs correlation processing and then sends an initial context setup request message to the source HeNB. Since the source HeNB is connected to the MME as an S1 proxy through the HeNB GW, the MME first sends the message to the proxy node HeNB GW.

Step 404, after receiving the initial context setup request message, the HeNB GW performs handover type pre-judgment for the source HeNB, that is, the HeNB GW performs pre-judgment according to the stored serving cell, neighboring cell, and MME pool information of the HeNB having the X2 interface, and generates X2 handover related information, which at least includes: a list of target henbs that are allowed to initiate an X2 handover (i.e., a list of target home base stations that the source HeNB can initiate an X2 handover), and a list of data forwarding manners associated with the target home base stations. The data forwarding mode comprises the following steps: the S1 mode and the X2 mode.

In step 405, the HeNB GW adds the X2 handover-related information to the initial context setup request message, and sends the initial context setup request message added with the X2 handover-related information to the source HeNB.

And after receiving the initial context establishment request message, the source HeNB performs subsequent operation to complete the initial context establishment process.

In step 406, the UE sends a measurement report to the source HeNB.

In step 407, the source HeNB performs handover decision according to the measurement report and the X2 handover-related information, selects a target femtocell for handover, and determines a handover type.

Step 408, if the source HeNB determines that the X2 handover condition is satisfied, executing an X2 handover procedure; if the X2 switching condition is not satisfied, the S1 switching flow is executed.

The second embodiment of the present invention describes a scenario in which the HeNB GW sends X2 handover-related information to the HeNB in the X2 handover process. In this embodiment, the UE is handed over from the HeNB a to the HeNB B through an X2 handover procedure, the HeNB GW performs handover type pre-determination during the handover, and sends X2 handover-related information to the HeNB, and the HeNB stores the information and performs handover type determination using the information during the handover of the UE from the HeNB B to the HeNB C. As shown in fig. 5, the method mainly comprises the following steps:

step 501, the UE sends a measurement report to the HeNB a.

Step 502, the HeNB a performs handover decision, selects a target femtocell to be handed over, and determines a handover type. Assuming that the X2 handover condition is satisfied in this embodiment, the HeNB a initiates an X2 handover procedure.

Step 503, the HeNB a sends a handover request message to the HeNB, where the message includes relevant information used by the HeNB for handover preparation and context of the UE.

And step 504, after the preparation of the HeNB handover is completed, sending a handover request confirmation message to the HeNB A. The acknowledgement message includes a Radio Resource Control (RRC) message, i.e., an RRC connection reconfiguration message, for instructing the UE to perform handover.

Step 505, the HeNB a sends the RRC connection reconfiguration message to the UE over an air interface to instruct the UE to perform a corresponding handover operation.

Step 506, if necessary, the HeNB a sends a Sequence Number (SN) state transfer (SN status transfer) message to the HeNB B to transfer the uplink and downlink Packet Data Convergence Protocol Sequence Number (PDCP SN) state.

And step 507, after the UE is successfully accessed to the target cell of the HeNB, sending an RRC connection reconfiguration completion message to the HeNB.

In step 508, the HeNB sends a path transfer request message to the MME to notify the UE that the cell has been changed. Since the HeNB is connected to the MME as an S1 proxy through the HeNB GW, the HeNB sends the message to the proxy node HeNB GW first, and the HeNB GW sends the message to the MME again.

In step 509, the MME sends a path transfer request response message to the HeNB B for confirmation. Since the HeNB is proxied to the MME as S1 through the HeNB GW, the MME first sends this message to the proxy node HeNB GW.

Step 510, the HeNB GW performs handover type pre-judgment for the HeNB after receiving the path transfer request response message, that is, the HeNB GW performs pre-judgment according to the stored serving cell, neighboring cell, and MME pool information of the HeNB having the X2 interface, and generates X2 handover related information, which at least includes: the HeNB may initiate a list of target home base stations for X2 handover and a list of data forwarding manners associated with the target home base stations.

In step 511, the HeNB GW adds the X2 handover-related information to the path transfer request response message, and sends the path transfer request response message added with the X2 handover-related information to the HeNB. The HeNB then performs subsequent UE context release operations to complete the X2 handover procedure.

In step 512, the UE sends a measurement report to the HeNB.

And step 513, the HeNB performs handover decision according to the measurement report and the X2 handover related information, selects a target femtocell for handover, and determines a handover type.

Step 514, if the HeNB determines that the X2 handover condition is satisfied, executing an X2 handover procedure; if the X2 switching condition is not satisfied, the S1 switching flow is executed.

The third embodiment of the present invention describes a scenario in which the HeNB GW sends X2 handover-related information to the HeNB in the S1 handover process. In this embodiment, the UE is handed over from the HeNB a to the HeNB B through the S1 handover procedure, the HeNB GW performs handover type pre-determination during the handover procedure, and sends X2 handover-related information to the HeNB, and the HeNB stores the information and performs handover type determination using the information during the handover procedure of the UE from the HeNB B to the HeNB C. As shown in fig. 6, the method mainly comprises the following steps:

step 601, the UE sends a measurement report to the HeNB a.

Step 602, the HeNB a receives the measurement report and then makes a handover decision, selects a target femtocell for handover, and determines a handover type. Assuming that the X2 handover condition is not satisfied in this embodiment, the HeNB a initiates an S1 handover procedure. The HeNB A sends a switching requirement message to the MME. Since the HeNB a is proxied to the MME as S1 through the HeNB GW, the HeNB a first sends this message to the proxy node HeNBGW. The HeNB GW sends the message to the MME.

Step 603, after performing access control, the MME sends a handover request message to the HeNB. Since the HeNBB is connected to the MME as an S1 proxy through the HeNB GW, the MME first sends this message to the proxy node HeNB GW.

Step 604, after receiving the handover request message, the HeNB GW performs handover type prejudgment for the HeNB, that is, the HeNB GW performs prejudgment according to the stored serving cell, neighboring cell, and MMEpool information of the HeNB having the X2 interface, and generates X2 handover related information, which at least includes: the HeNB may initiate a list of target home base stations for X2 handover and a list of data forwarding manners associated with the target home base stations.

In step 605, the HeNB GW adds the X2 handover-related information to the handover request message, and transmits the handover request message to which the X2 handover-related information is added to the source HeNB.

In step 606, the HeNB sends a handover request acknowledgement message to the MME, and since the HeNB is connected to the MME as an S1 proxy through the HeNB GW, the HeNB sends the message to the proxy node HeNB GW first, and the HeNB GW sends the message to the MME.

In step 607, the MME sends a handover command message (including an RRC connection reconfiguration message) to the HeNBA. Since the HeNB a is connected to the MME as an S1 proxy through the HeNB GW, the MME first sends the message to the proxy node HeNB GW, which then sends the message to the HeNB a. And the HeNB A sends the RRC connection reconfiguration message to the UE. The UE performs a subsequent handover operation after receiving the handover request to complete the S1 handover procedure.

In step 608, the UE sends the measurements to the HeNB.

And step 609, the HeNB performs switching judgment according to the measurement report and the X2 switching related information, selects a switching target home base station and determines the switching type.

Step 610, if the HeNB B determines that the X2 handover condition is satisfied, executing an X2 handover procedure; if the X2 switching condition is not satisfied, the S1 switching flow is executed.

To summarize the above embodiments, the method for determining a handover type of a home base station provided by the present invention, as shown in fig. 7, mainly includes the following steps:

and step 701, the femtocell gateway performs prejudgment according to the stored serving cell, neighboring cell and MME pool of the femtocell with the X2 interface, and generates X2 switching related information.

The X2 handover-related information at least includes: a list of target home base stations that can initiate an X2 handover, and a list of data forwarding manners associated with the target home base stations.

In step 702, the femtocell gateway sends the X2 handover-related information to the femtocell through an S1 dedicated message, so that the femtocell determines the handover type according to the X2 handover-related information when handover is required.

The S1 specific message employed may be one of: an initial context setup request message, a path transfer request response message, an S1 handover request message, a user context modification request message.

And step 703, the femtocell selects a target femtocell to be switched according to the relevant information of the X2 switching, and determines the switching type.

The handover types include:

an S1 switching process is adopted, and a S1 mode is adopted for data forwarding;

adopting an S1 switching process, and adopting an X2 mode for data forwarding;

and an X2 switching process is adopted, and an X2 mode is adopted for data forwarding.

Corresponding to the method for determining the switching type of the home base station, the invention also provides a system for determining the switching type of the home base station, which comprises the following steps: a home base station gateway and a home base station. The femtocell gateway is used for prejudging according to a service cell, an adjacent cell and an MME pool of a femtocell with an X2 interface, generating X2 switching related information and sending the X2 switching related information to the femtocell through an S1 dedicated message. And the home base station is used for selecting a target home base station for switching according to the X2 switching related information and determining the switching type. The X2 handover-related information at least includes: a list of target home base stations that are allowed to initiate an X2 handover, and a list of data forwarding manners associated with the target home base stations.

The S1 specific message employed may be one of: an initial context setup request message, a path transfer request response message, an S1 handover request message, a user context modification request message.

When the femtocell gateway detects that the X2 switching related information changes, the corresponding femtocell can be informed through a user context modification request message; and the femtocell stores the updated X2 switching related information, selects a switching target femtocell according to the updated X2 switching related information in the subsequent inter-femtocell switching process, and determines the switching type.

Further, the home base station gateway may include: the system comprises an information generating module and an information sending module; the information generating module is used for carrying out prejudgment according to a service cell, a neighboring cell and an MME pool of a home base station which is stored and has an X2 interface with the home base station, and generating X2 switching related information; and an information sending module for sending the generated X2 handover-related information to the femtocell through the S1 dedicated message.

Preferably, the information sending module may notify the corresponding hnb through a user context modification request message when detecting that the information related to the X2 handover changes.

The home base station may include: the device comprises an information receiving module and a switching type determining module; the information receiving module is used for receiving an S1 special message sent by the femtocell gateway, wherein the S1 special message contains X2 switching related information; the switching type determining module is used for selecting a target femtocell for switching according to the X2 switching related information and determining a switching type; and the related information of the X2 handover is pre-judged and determined by the femtocell gateway according to the stored serving cell, neighboring cell and MME pool of the femtocell with the X2 interface.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention.

Claims (10)

1. A method for determining a handover type of a home base station is characterized by comprising the following steps:

the femtocell gateway performs prejudgment according to a stored serving cell, an adjacent cell and a mobile management entity pool (MME pool) of the femtocell with an X2 interface, and generates X2 switching related information;

and the home base station gateway sends the X2 handover related information to the home base station through an S1 dedicated message, so that the home base station determines the handover type according to the X2 handover related information when needing handover.

2. The method for determining the handover type of the home base station according to claim 1, wherein the X2 handover-related information at least comprises: a list of target home base stations that are allowed to initiate an X2 handover, and a list of data forwarding manners associated with the target home base stations.

3. The method for determining the handover type of the home base station according to claim 2, wherein the S1 dedicated message comprises: an initial context setup request message, a path transfer request response message, an S1 handover request message, a user context modification request message.

4. The method for determining the handover type of the home base station as claimed in claim 3, further comprising:

when the femtocell gateway detects that the X2 handover-related information changes, informing the corresponding femtocell through a user context modification request message.

5. The method for determining the handover type of the home base station according to any one of claims 1 to 4, wherein the handover type comprises:

an S1 switching process is adopted, and a S1 mode is adopted for data forwarding;

adopting an S1 switching process, and adopting an X2 mode for data forwarding;

and an X2 switching process is adopted, and an X2 mode is adopted for data forwarding.

6. A home base station gateway, comprising: the system comprises an information generating module and an information sending module; wherein,

the information generating module is used for carrying out prejudgment according to the stored serving cell, neighboring cell and MME pool of the femtocell with the X2 interface, and generating X2 switching related information;

the information sending module is configured to send the generated X2 handover-related information to the femtocell through an S1 dedicated message.

7. The femtocell gateway of claim 6, wherein the X2 handover-related information at least comprises: a list of target home base stations that are allowed to initiate an X2 handover, and a list of data forwarding manners associated with the target home base stations.

8. The femtocell gateway of claim 7, wherein the S1 dedicated message comprises: an initial context setup request message, a path transfer request response message, an S1 handover request message, a user context modification request message.

9. The femtocell gateway of claim 8, wherein the information sending module is further configured to notify the corresponding femtocell through a user context modification request message when detecting that the X2 handover-related information is changed.

10. A home base station, comprising: the device comprises an information receiving module and a switching type determining module; wherein,

the information receiving module is configured to receive an S1 dedicated message sent by a femtocell gateway, where the S1 dedicated message includes X2 handover related information;

the switching type determining module is used for selecting a target femtocell for switching according to the X2 switching related information and determining a switching type; and the related information of the X2 handover is pre-judged and determined by the femtocell gateway according to the stored serving cell, neighboring cell and MME pool of the femtocell with the X2 interface.

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