WO2008154883A1

WO2008154883A1 - A method for handing over to a private cell and the equipment thereof

Info

Publication number: WO2008154883A1
Application number: PCT/CN2008/071382
Authority: WO
Inventors: Yinghua Huang
Original assignee: Huawei Technologies Co., Ltd.
Priority date: 2007-06-20
Filing date: 2008-06-20
Publication date: 2008-12-24
Also published as: CN101330738A

Abstract

A method for handing over to a private cell is disclosed by the embodiments of the present invention, which includes the following steps: a user equipment receiving a list of neighbor private cells which allow the user equipment to access, wherein the list is transferred by a current cell, and the user equipment measuring the information of the cells in the list; the user equipment selecting a target cell from the list of neighbor private cells, and transferring the information of the target cell to the current cell; the user equipment performing handover based on the indication of handing over to the target cell, wherein the indication is transferred by the current cell. A network equipment and a user equipment are also disclosed by the embodiments of the present invention. Only the neighbor private cells which allow the user equipment to access are measured in the embodiments of the present invention, so the load of the user equipment can be reduced; in addition, the determination whether the user equipment is allowed to access the target cell is added in the embodiments of the present invention, so the invalid handover attempts which are performed by the user equipment not allowed to access the private cells are reduced, and the successful rate of handover is increased.

Description

Method and device for switching to private cell

The present invention relates to the field of wireless communication technologies, and in particular, to a method and apparatus for handover to a private cell. Background technique

With the rapid development of wireless communication technologies, indoor base stations have been widely used. The indoor base station can better utilize the resources of the existing network, better protect the cost of the network equipment operator, and combine the respective advantages of the mobile access network and the fixed access network. The indoor base station only allows certain users with private network rights to reside or access, and will require these users to reside or access the public network.

For a private network of a home or enterprise, the number of private networks will be large due to the development and demand of the network, and each home or enterprise private network is operated by independent, non-professional users. At the same time, because the coverage of the private network is relatively small, there are multiple types of networks covering the network coverage area, such as the public network and the private network.

Currently, there is no handover method specifically for a private cell in the prior art, and only a handover procedure between macro cells. First, the macro cell configures all neighboring cells (including private cells) as neighboring cells in the neighbor cell list of the macro cell. When the user equipment establishes a connection with the macro cell, the neighbor cell list is sent to the user equipment by using the measurement control message, and the user equipment is instructed to perform measurement on the neighboring cell. When the user equipment measures the cell suitable for handover, the measurement report is reported to the macro cell. The macro cell then determines a suitable target cell based on the result of the measurement, instructing the user equipment to switch to the target cell.

In carrying out the invention, the inventors have found that at least the following problems exist in the prior art:

The prior art does not consider that a private cell only allows users with corresponding rights to use this feature. If the user equipment only allows access to a few of the cells, the user actually The device only needs to measure the private cell it is allowed to access. However, in the prior art, the user equipment needs to measure all the adjacent private cells of the macro cell, which causes the user equipment to perform unnecessary measurement and increases the burden on the user equipment.

There is another problem: the macro cell does not know whether the user equipment can access the target cell before the user equipment is instructed to switch to the target cell. Therefore, the user equipment may not access the target cell, causing the handover to fail. . Summary of the invention

The technical solution of the embodiment of the present invention provides a method for handover to a private cell, including the following steps: The user equipment receives a list of neighboring private cells that are sent by the current cell and allows the user equipment to access, and measures the The information of the cell in the list;

The user equipment selects a target cell from the private cell, and sends information of the target cell to a current cell;

The user equipment performs cell handover according to an indication that the current cell sends a handover to the target cell.

The technical solution of the embodiment of the present invention further provides a method for handover to a private cell, including the following steps: The current cell receives information of a target cell that is sent by a user equipment after measuring a private cell, where the target cell is used by the user equipment And selecting, in the private cell, determining whether the user equipment is allowed to access the target cell, and if yes, the current cell instructing the user equipment to switch to the target cell.

The technical solution of the embodiment of the present invention further provides a network side device, including a cell list obtaining unit and a cell list determining unit,

The cell list obtaining unit is configured to acquire a list of neighboring private cells and a list of private cells that the user equipment is allowed to access;

The cell list determining unit is configured to acquire, according to a list of neighboring private cells acquired by the cell list obtaining unit, and a list of private cells that are allowed to be accessed by the user equipment, to acquire an adjacent private cell that is allowed to be accessed by the user equipment. list of.

The technical solution of the embodiment of the present invention further provides a network side device, including corresponding a storage unit and an access access determination unit,

The corresponding relationship storage unit is configured to store a list of allowed access correspondences between the user equipment and the target cell;

The permission access determining unit is configured to determine, according to the allowed access correspondence list of the user equipment and the target cell, whether the user equipment is allowed to access the target cell.

The technical solution of the embodiment of the present invention further provides a user equipment, including: a cell information measurement unit, a target cell selection unit, and a handover unit, where the cell information measurement unit is configured to measure an adjacent private cell that is allowed to access the same. The target cell selection unit is configured to select a target cell from the private cell according to the cell information measured by the cell information measurement unit, and send the information of the target cell to the current cell; And performing cell handover according to an indication that the current cell sends a handover to the target cell.

The technical solution of the embodiment of the present invention further provides a system for switching to a private cell, including:

a network side device, configured to acquire a list of neighboring private cells and a list of private cells that are allowed to access by the user equipment, and obtain a list of neighboring private cells acquired by the cell list obtaining unit and allow the user equipment to be connected a list of the entered private cells, obtaining a list of neighboring private cells that allow the user equipment to access; or

The network side device is configured to receive information about the target cell that is sent by the user equipment after measuring the private cell and selecting the target cell from the private cell, and determining whether the user equipment is allowed to access the target cell.

Compared with the prior art, the embodiment of the present invention has the following advantages: The embodiment of the present invention only measures the neighboring private cell that allows the user equipment to access, and reduces the burden on the user equipment. DRAWINGS

1 is a flow chart of a method for handover to a private cell according to an embodiment of the present invention;

2 is a flowchart of another method for handover to a private cell according to an embodiment of the present invention; FIG. 3 is a flowchart of still another method for handover to a private cell according to an embodiment of the present invention;

4 is a flow chart of still another method for handover to a private cell according to an embodiment of the present invention;

FIG. 5 is a flow chart of still another method for switching to a private cell according to an embodiment of the present invention;

FIG. 6 is a structural diagram of a network side device according to an embodiment of the present invention; FIG. 7 is a structural diagram of another network side device according to an embodiment of the present invention; FIG. 8 is a user equipment according to an embodiment of the present invention; Structure diagram

FIG. 9 is a structural diagram of a system for switching to a private cell according to an embodiment of the present invention. detailed description

The specific embodiments of the present invention are further described in detail below with reference to the accompanying drawings and embodiments.

A method for switching to a private cell according to an embodiment of the present invention is as shown in FIG. 1. First, a user equipment measures information of a neighboring private cell that is allowed to access, and then the user equipment selects a target from the private cell. The cell sends the information of the target cell to the current cell, and finally the user equipment performs cell handover according to the indication that the current cell sends the handover to the target cell. In this embodiment, a list of private cells that are allowed to be accessed by the user equipment is stored in the core network. Referring to FIG. 1, the embodiment includes the following steps:

Step slOl, the current cell acquires a list of neighboring private cells.

Specifically, it can be obtained through the startup and configuration process of the private cell.

Step sl02, the user equipment establishes a connection with the current cell, and the user equipment is at

Active state; The current cell obtains a list of private cells from the core network that the user equipment is allowed to access during the establishment of the connection.

Step s10: the current cell is based on the list of adjacent private cells and allows the user to set A list of private cells that are ready to access, and obtain a list of neighboring private cells that the user equipment is allowed to access. That is, the current cell compares the list of the neighboring private cells with the list of the private cells that the user equipment is allowed to access, and determines the private cells in the neighboring private cells that are allowed to access the user equipment.

Step sl04: The current cell sends a list of the neighboring private cells that the user equipment is allowed to access to the user equipment.

Step sl05: The user equipment measures information about the cell in the received cell list, and selects a target cell from the cell list according to the information, and then sends the information of the target cell to the current cell by using a measurement report.

Step sl06: If the user equipment is allowed to access the target cell, the current cell sends a handover request to the target cell. Specifically, the current cell determines whether the target cell is in a list of private cells that the user equipment is allowed to access. If the target cell is in a list of private cells that the user equipment is allowed to access, the current cell sends a handover request to the target cell. .

Step sl07: The target cell determines to accept the user equipment according to the resource condition of the cell, and sends a handover response to the current cell.

Step sl08: The current cell sends a handover command to the user equipment.

Step sl09, the user equipment switches to the target cell.

In this embodiment, only the neighboring private cells that allow the user equipment to access are measured, which reduces the burden on the user equipment. Moreover, in this embodiment, the user equipment is allowed to access the target cell, and the user equipment that is not allowed to access the private cell is reduced to perform an invalid handover attempt, and the success rate of the handover is increased.

Another method for switching to a private cell according to an embodiment of the present invention is shown in FIG. 2 . In this embodiment, it is also assumed that the list of private cells that the user equipment is allowed to access is stored in the core network. Referring to FIG. 2, the embodiment includes the following steps:

Step s201~Step S205, the same step slOl~ step sl05.

In step s206, the current cell determines whether the target cell is a private cell according to the result of the measurement report, and if it is a private cell, determines whether the target cell is in the list of private cells that the user equipment is allowed to access, and if yes, proceeds to step s207; otherwise, End. Step s207: If the user equipment is allowed to access the target cell, the current cell sends a handover request to the target cell.

Step s208: The target cell determines to accept the user equipment according to the resource condition of the current cell, and sends a handover response to the current cell.

Step s209: The current cell sends a handover command to the user equipment.

Step s210: The user equipment switches to the target cell.

In this embodiment, only the neighboring private cell that allows the user equipment to access is measured, and the burden on the user equipment is reduced. In this embodiment, the decision of whether the user equipment is allowed to access the target cell is increased, and the private cell is not allowed to be accessed. The user equipment performs an invalid handover attempt, which increases the success rate of the handover.

A method for switching to a private cell according to another embodiment of the present invention is shown in FIG. 3. In this embodiment, a list of private cells allowed to be accessed by a user equipment is stored in the user equipment (for example, stored in the user equipment. In the SIM (Subscriber Identity Model) card, referring to FIG. 3, the embodiment includes the following steps: Step s301: The current cell acquires a list of adjacent private cells.

Step s302: The user equipment establishes a connection with the current cell, and the user equipment is in an Active state. In the process of establishing a connection, the user equipment sends a list of private cells that the user is allowed to access to the current cell.

Step s303: The current cell acquires a list of neighboring private cells that allow the user equipment to access according to the list of the neighboring private cells and the list of the private cells that the user equipment is allowed to access. That is, the current cell compares the list of neighboring private cells with the list of private cells that the user equipment is allowed to access, and determines the private cells in the neighboring private cells that are allowed to access the user equipment.

Step s304: The current cell sends a list of the neighboring private cells that the user equipment is allowed to access to the user equipment.

Step s305: The user equipment measures information about the cell in the received cell list, selects a target cell from the cell list according to the information, and then sends the information of the target cell to the current cell by using a measurement report. Step s306: The current cell sends a handover request to the target cell, where the handover request carries the user equipment identifier.

Step s307: The target cell determines whether the user equipment is in the user equipment list of the target cell.

If the target cell stores a list of user equipments that it is allowed to access, the target cell determines whether the user equipment is in the user equipment list, and if yes, the user equipment allows access to the target cell. Otherwise, access to the target cell is not allowed; or

If the target cell does not store a list of user equipments that it is allowed to access, the target cell sends the user equipment identifier carried in the handover request to the core network, and the core network performs whether the user equipment is allowed to connect. And determining, by the target cell, the user equipment list from the core network, and determining whether the user equipment is in the user equipment list of the target cell.

In addition, before performing the foregoing determination, the target cell needs to first determine whether the user equipment identifier carried in the handover request is the same as the type of the user equipment identifier stored in the user equipment list, and if yes, directly perform the user. Whether the device is in the user equipment list; otherwise, the target cell sends a user equipment identity conversion request to the core network; the core network converts the user equipment identifier carried in the handover request into the user equipment list. The user equipment is stored in the same type of user equipment identifier; the target cell determines whether the user equipment is in the user equipment list according to the converted user equipment identifier. Of course, if the target cell is judged through the core network, it is not necessary to perform type determination and conversion on the user equipment identifier.

Of course, other embodiments may obviously increase the determining step of step s307. Step s308: The target cell determines to accept the user equipment according to the resource condition of the current cell, and sends a handover response to the current cell.

Step s309: The current cell sends a handover command to the user equipment.

Step s310: The user equipment switches to the target cell.

In this embodiment, only the neighboring private cell that allows the user equipment to access is measured, which reduces the burden on the user equipment. Moreover, this embodiment increases whether the user equipment is allowed to access the target cell. The decision reduces the user equipment that is not allowed to access the private cell to perform an invalid handover attempt, and increases the success rate of the handover.

A method for switching to a private cell according to another embodiment of the present invention is shown in FIG. 4. In this embodiment, it is assumed that the core network stores a list of allowed access correspondences between the user equipment and the target cell, where the correspondence relationship list includes A list of private cells to which the user equipment allows access or a list of user equipments that each private cell allows access; and the user equipment switches from cell A to the current cell and then from the current cell to the target cell. Referring to Figure 4, this embodiment includes the following steps:

Step s401: The current cell acquires a list of neighboring private cells.

Step s402: The user equipment establishes a connection with the cell A, and the user equipment is in an Active state. In the process of establishing the connection, the user equipment sends a list of the private cells that the user is allowed to access to the cell A. Step s402 and step s401 have no sequence, and can be performed simultaneously.

Step s403: The user equipment is switched from the cell A to the current cell. In the handover process, the cell A sends a list of the private cells allowed to be accessed by the user equipment to the current cell.

Of course, the current cell can also obtain a list of private cells that the user equipment is allowed to access from the core network.

Step s404: The current cell acquires a list of neighboring private cells that allow access by the user equipment according to a list of neighboring private cells and a list of private cells that the user equipment is allowed to access. That is, the current cell compares the list of neighboring private cells with the list of private cells that the user equipment is allowed to access, and determines the private cells in the neighboring private cells that are allowed to access the user equipment.

Step s405: The current cell sends a list of the neighboring private cells that the user equipment is allowed to access to the user equipment.

Step s406: The user equipment measures information about the cell in the received cell list, and selects a target cell from the cell list according to the information, and then sends the information of the target cell to the current cell by using a measurement report.

Step s407: The current cell sends a handover request to the core network; The identifier of the target cell may also carry a flag to indicate that the target cell is a private cell.

Step s408: The core network determines, according to the allowed access list of the user equipment and the target cell, whether the user equipment is corresponding to the target cell, and if yes, go to step s409, otherwise the access to the target cell is not allowed.

The list of allowed access correspondences of the user equipment and the target cell includes a list of private cells that each user equipment allows to access, or a list of user equipments that each private cell allows access to.

First, the core network identifies that the target cell of the handover is a private cell, and the identification process may be identified according to the identifier carried in the handover request, or may be directly identified according to the identifier of the target cell.

The core network then determines whether the user equipment corresponds to the target cell, that is, verifies the validity of the handover request according to the identifier of the user equipment and the identifier of the target cell.

Step s409: Forward a handover request message to the target cell.

Step s410: The target cell determines to accept the user equipment according to the resource condition of the cell, and sends a handover response to the current cell.

Step s411: The current cell sends a handover command to the user equipment.

Step s412, the user equipment switches to the target cell.

A method for switching to a private cell according to another embodiment of the present invention is shown in FIG. 5. In this embodiment, a list of private cells that are allowed to be accessed by the user equipment is stored in the core network. This embodiment includes the following steps:

Step s501: The current cell acquires a list of adjacent private cells.

Step s502: The current cell sends a list of the neighboring private cells to the user equipment.

Step s503, the user equipment measures information about the cell in the received cell list, and roots The target cell is selected from the cell list according to the information, and then the information of the target cell is sent to the current cell by using a measurement report.

Step s504: The current cell determines, according to the result of the measurement report, whether the target cell is a private cell, and if it is a private cell, determines whether the target cell is in a list of private cells that the user equipment is allowed to access, and if yes, proceeds to step s505; otherwise, End.

Step s505: If the user equipment allows access to the target cell, the current cell sends a handover request to the target cell.

Step s506: The target cell determines to accept the user equipment according to the resource condition of the cell, and sends a handover response to the current cell.

Step s507: The current cell sends a handover command to the user equipment.

Step s508: The user equipment switches to the target cell.

In this embodiment, the decision of whether the user equipment is allowed to access the target cell is added, and the user equipment that is not allowed to access the private cell is reduced to perform an invalid handover attempt, and the success rate of the handover is increased.

As shown in FIG. 6, the network side device provided by the embodiment of the present invention includes: a cell list obtaining unit 61 and a cell list determining unit 62.

The cell list obtaining unit 61 is configured to acquire a list of neighboring private cells and a list of private cells that the user equipment is allowed to access. It can be obtained by at least one of the following ways:

The current cell is obtained from the core network in the process of establishing a connection with the user equipment; the current cell is reported by the user equipment in the process of establishing a connection with the user equipment; if the user equipment is switched from another cell, the current cell is in the handover process. Obtained from other cells.

The cell list determining unit 62 is configured to obtain a list of neighboring private cells that allow the user equipment to access according to the list of neighboring private cells acquired by the cell list obtaining unit 61 and the list of private cells that the user equipment is allowed to access.

The network side device may further include: an access permission determining unit 63, configured to determine, according to a list of private cells that the user equipment is allowed to access, whether the user equipment is allowed to access the target cell. In this embodiment, only the neighboring private cell that allows the user equipment to access is measured, and the burden on the user equipment is reduced. In this embodiment, the decision of whether the user equipment is allowed to access the target cell is increased, and the private cell is not allowed to be accessed. The user equipment performs an invalid handover attempt, which increases the success rate of the handover.

Another network side device provided by the embodiment of the present invention, as shown in FIG. 7, includes: a transceiver unit 71 and an access determination unit 72,

The transceiver unit 71 is configured to receive information about a target cell that is sent by the user equipment after measuring the private cell and selecting the target cell from the private cell;

The access permission determining unit 72 is configured to determine whether the user equipment is allowed to access the target cell.

The network side device may further include: a cell list determining unit 73, configured to acquire, according to the list of the neighboring private cells and the allowed access correspondence list of the user equipment and the target cell, the neighboring private cell that is allowed to access by the user equipment The list is sent to the user equipment through the transceiver unit 71. The access list of the user equipment and the target cell may be obtained by using at least one of the following methods: The current cell is obtained from the core network in the process of establishing a connection with the user equipment; the current cell is established with the user equipment. The connection is obtained by the user equipment during the connection process; if the user equipment is switched from another cell, the current cell is acquired from other cells during the handover process.

The network side device may further include: a correspondence relationship storage unit 74, configured to store a list of allowed access correspondences of the user equipment and the target cell, where the list includes a list of private cells that each user equipment allows to access, or each private The user equipment list that the cell is allowed to access, the access permission determining unit 72 determines whether the user equipment is allowed to access the target cell according to the allowed access correspondence list of the user equipment and the target cell stored by the correspondence relationship storage unit 74.

A user equipment of the embodiment of the present invention has a structure as shown in FIG. 8, and the user equipment 8 is provided. The method includes: a list receiving unit 81, a cell information measuring unit 82, a target cell selecting unit 83, and a switching unit 84,

a list receiving unit 81, configured to receive a list of neighboring private cells that are sent by the current cell and allow the user equipment to access;

a cell information measuring unit 82, configured to measure information of a cell in the list received by the list receiving unit 81;

The target cell selection unit 83 is configured to select a target cell from the neighboring private cells according to the cell information measured by the cell information measurement unit 82, and send the information of the target cell to the current cell.

The switching unit 84 is configured to perform cell handover according to an indication that the current cell sends a handover to the target cell.

The user equipment may further include: a permitted access private cell information storage unit 85, configured to store a list of private cells that allow the user equipment to access, and send the list to the current cell.

In this embodiment, only the neighboring private cells that allow the user equipment to access are measured, which reduces the burden on the user equipment.

A system for switching to a private cell according to an embodiment of the present invention is as shown in FIG. 9, and includes a network side device 91 and a user equipment 92.

a network side device 91, configured to acquire a list of neighboring private cells and a list of private cells that are allowed to be accessed by the user equipment 92, and obtain a list of neighboring private cells acquired by the cell list obtaining unit and allow the user a list of private cells accessed by the device 92, and obtaining a list of neighboring private cells that the user equipment 92 is allowed to access; or

The network side device 91 is configured to receive information about the target cell that is sent by the user equipment after measuring the private cell and selecting the target cell from the private cell, and determining whether the user equipment is allowed to access the target cell. . Specifically, it may be used to store a list of allowed access correspondences between the user equipment and the target cell, and determine whether the user equipment is allowed to access the target cell according to the allowed access list of the user equipment and the target cell.

The system for switching to the private cell further includes: a user equipment 92 for A list of neighboring private cells that the user equipment 92 obtains to be accessed by the side device 91, and information about the neighboring private cells that the user equipment 92 is allowed to access is measured, according to the measured information of the neighboring private cells, from the private cell. The target cell is selected, and the information of the target cell is sent to the current cell, and the cell handover is performed according to the indication that the current cell sends the handover to the target cell.

For the specific processing performed by the network side device and the user terminal, refer to the specific implementation process corresponding to FIG. 1 to 5.

In this embodiment, the user equipment 92 only measures the neighboring private cell that is allowed to be accessed by the user equipment 92, and reduces the burden on the user equipment 92. In addition, the network side device 91 determines whether the user equipment 92 allows access. The decision of the target cell reduces the invalid handover attempt by the user equipment 92 that is not allowed to access the private cell, and increases the success rate of the handover.

Through the description of the above embodiments, those skilled in the art can clearly understand that the present invention can be implemented by hardware or by software plus necessary general hardware platform. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which may be stored in a non-volatile storage medium (which may be a CD-ROM, a USB flash drive, a mobile hard disk, etc.), including several The instructions are for causing a computer device (which may be a personal computer, server, or network device, etc.) to perform the methods described in various embodiments of the present invention.

The above disclosure is only a few specific embodiments of the present invention, but the present invention is not limited thereto, and any changes that can be made by those skilled in the art should fall within the protection scope of the present invention.

Claims

Rights request

A method for handover to a private cell, comprising the steps of: receiving, by a user equipment, a list of neighboring private cells that are sent by the current cell and allowing the user equipment to access, and measuring the list Information of the middle cell;

The user equipment selects a target cell from the neighboring private cells, and sends information of the target cell to the current cell;

2. The method according to claim 1, wherein the list of neighboring private cells allowed to be accessed by the user equipment is determined by the current cell according to a list of neighboring private cells of the current cell, and the user equipment is allowed. A list of accessed private cells is obtained.

The method according to claim 2, wherein the current cell acquisition list of the private cell that allows the user equipment to access is specifically:

Obtaining from the core network, or acquiring from the user equipment in the process of establishing a connection with the user equipment, or switching to the current cell process in the user equipment in the process of establishing a connection with the user equipment The medium is obtained from the cell where the user equipment is located before the handover.

The method according to claim 1, wherein before the current cell indicates that the user equipment is handed over to the target cell, the method further includes: determining whether the user equipment is allowed to access the target cell, and if yes, Switching from the user equipment to the target cell.

The method according to claim 4, wherein the determining whether the user equipment is allowed to access the target cell specifically includes:

And determining, by the current cell, whether the target cell is in a list of private cells that the user equipment is allowed to access, and if yes, the user equipment is allowed to access the target cell.

The current cell sends a handover request carrying the user equipment identifier to the target cell; If the target cell stores a list of user equipments that it is allowed to access, it is determined whether the user equipment is in the user equipment list, and if yes, the user equipment is allowed to access the target cell.

The method according to claim 6, wherein before determining whether the user equipment is in the user equipment list, the method further includes:

Determining whether the user equipment identifier carried in the handover request is the same as the type of the user equipment identifier stored in the user equipment list, and if yes, directly determining whether the user equipment is in the user equipment list; otherwise ,

Sending, by the target cell, a user equipment identity conversion request to the core network;

The core network converts the user equipment identifier carried in the handover request into a user equipment identifier of the same type as the user equipment identifier stored in the user equipment list;

The target cell determines whether the user equipment is in the user equipment list according to the converted user equipment identifier.

The method according to claim 6, further comprising: if the target cell does not store a list of user equipments that it is allowed to access, the target cell identifier of the user equipment carried in the handover request Sending to the core network, the core network performing a determination as to whether the user equipment is allowed to access the target cell; or

And obtaining, by the target cell, the user equipment list from the core network, and determining whether the user equipment is in the user equipment list.

The current cell sends a handover request carrying the target cell identifier to the core network; the core network determines, according to the allowed access association list of the user equipment and the target cell, whether the user equipment corresponds to the target cell, and if yes, the user The device allows access to the target cell.

The method according to claim 9, wherein the list of allowed access correspondences of the user equipment and the target cell comprises: a list of private cells allowed by each user equipment to access or per private cell permission A list of user devices that are accessed.

A method for handover to a private cell, comprising the steps of: receiving, by a current cell, information of a target cell that is sent by a user equipment after measuring a private cell, where the target cell is selected by the user equipment from the private cell Out

Determining whether the user equipment is allowed to access the target cell, and if yes, the current cell instructing the user equipment to switch to the target cell.

The method according to claim 11, wherein the determining whether the user equipment is allowed to access the target cell specifically includes:

The current cell sends a handover request carrying the user equipment identifier to the target cell; if the target cell stores the user equipment list that is allowed to access, it is determined whether the user equipment is in the user equipment list, and if yes, The user equipment is allowed to access the target cell, otherwise the access to the target cell is not allowed.

The method of claim 13, further comprising: before determining whether the user equipment is in the user equipment list,

15. The method according to claim 13, wherein if the target cell does not store a list of user equipments that it is allowed to access,

Sending, by the target cell, the user equipment identifier carried in the handover request to the core a heart network, the core network performing a determination as to whether the user equipment is allowed to access the target cell; or

The method according to claim 16, wherein the user equipment and the target cell's allowed access correspondence list include: a list of private cells that each user equipment allows to access, or each private cell A list of user devices that are allowed to access.

The method according to claim 11, wherein the private cell measured by the user equipment is an adjacent private cell that allows the user equipment to access.

The method of claim 18, wherein the measuring, by the user equipment, the information of the private cell comprises:

The current cell acquires a list of neighboring private cells;

Obtaining, by the current cell, a list of the private cells that the user equipment is allowed to access; the current cell acquiring, according to the list of the neighboring private cells and the list of the private cells that the user equipment is allowed to access, a list of adjacent private cells;

The current cell sends the list of neighboring private cells that the user equipment is allowed to access to the user equipment;

The user equipment measures information of a cell in the received cell list.

The method according to claim 19, wherein the list of the private cells that the current cell obtains to allow the user equipment to access is specifically:

Obtaining from the core network in the process of establishing a connection with the user equipment, or acquiring from the user equipment in the process of establishing a connection with the user equipment, or In the process of the user equipment switching to the current cell, the cell is located in the cell where the user equipment is located before the handover.

A network side device, comprising: a cell list obtaining unit and a cell list determining unit,

The network side device according to claim 21, further comprising: an access permission determining unit, configured to determine, according to a list of private cells that the user equipment is allowed to access, whether to allow the user equipment to access the target cell .

A network side device, comprising: a transceiver unit and an access determination unit,

The transceiver unit is configured to receive information about the target cell that is sent by the user equipment after measuring the private cell and selecting the target cell from the private cell;

The permission access determining unit is configured to determine whether the user equipment is allowed to access the target cell.

The network side device according to claim 23, further comprising: a cell list determining unit, configured to: according to a list of adjacent private cells and a list of allowed access correspondences of the user equipment and the target cell Obtaining a list of neighboring private cells that are allowed to be accessed by the user equipment, and sending the information to the user equipment by using the transceiver unit.

The network side device according to claim 23, further comprising: a correspondence relationship storage unit, configured to store a list of allowed access corresponding relationships between the user equipment and the target cell,

The permission access determining unit is configured to determine, according to the allowed access correspondence list stored by the user equipment and the target cell, whether the user equipment is allowed to access the target cell.

26. A user equipment, comprising: a list receiving unit, a cell letter Information measurement unit, target cell selection unit and switching unit,

The list receiving unit is configured to receive a list of neighboring private cells that are sent by the current cell and allow the user equipment to access;

The cell information measuring unit is configured to measure information about a cell in a list received by the list receiving unit;

The target cell selection unit is configured to select a target cell from the neighboring private cells according to the cell information measured by the cell information measurement unit, and send the information of the target cell to the current cell;

The switching unit is configured to perform cell handover according to an indication that the current cell sends a handover to the target cell.

The user equipment according to claim 26, further comprising: accessing a private cell information storage unit, configured to store a list of private cells that allow the user equipment to access, and send the list to Current cell.

28. A system for switching to a private cell, comprising:

The system for switching to a private cell according to claim 28, further comprising:

a user equipment, configured to measure information about a neighboring private cell that is allowed to access by the user equipment according to the list of neighboring private cells that the network side device acquires, and according to the measured neighboring private cell And selecting a target cell from the private cell, and sending the information of the target cell to the current cell, and performing cell handover according to the indication that the current cell sends the handover to the target cell.