CN101330738A - A method and device for switching to a private cell - Google Patents

Abstract

The present invention discloses a method for switching to a private cell, which includes the following steps: user equipment measures the information of adjacent private cells that it is allowed to access; the user equipment selects a target cell from the private cells, and the The information of the target cell is sent to the current cell; the user equipment performs cell handover according to the instruction of switching to the target cell sent by the current cell. The invention also discloses a device for switching to a private cell and a user equipment. The present invention only measures the adjacent private cells that the user equipment is allowed to access, reducing the burden on the user equipment; in addition, the present invention increases the judgment of whether the user equipment is allowed to access the target cell, reducing the number of users who are not allowed to access the private cell The device makes invalid handover attempts, increasing the handover success rate.

Description

A method and device for switching to a private cell

technical field

The invention relates to the technical field of wireless communication, in particular to a method and device for switching to a private cell.

Background technique

With the rapid development of wireless communication technology, indoor base stations are widely used. Indoor base stations can make better use of existing network resources, better protect the cost of network equipment operators, and integrate the respective advantages of mobile access networks and fixed access networks. Indoor base stations only allow certain users with private network rights to reside or access, and at the same time require these users to reside or access in the public network.

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

At present, there is no handover method specifically for private cells in the existing technology, only a handover process between macro cells. First, the macro cell configures all neighboring cells (including private cells) as neighboring cells in the macro cell's neighboring cell list. When the user equipment establishes a connection with the macro cell, the neighbor cell list is sent to the user equipment through a measurement control message, instructing the user equipment to measure the neighbor cells. When the user equipment measures a cell suitable for handover, it reports to the macro cell through a measurement report. Then the macro cell judges a suitable target cell according to the result of the measurement report, and instructs the user equipment to switch to the target cell.

In the process of implementing the present invention, the inventors found that there are at least the following problems in the prior art: since the prior art does not consider the feature that only users with corresponding rights are allowed to use private cells, if the user equipment is only allowed to access a few In fact, the user equipment only needs to measure the private cells it is allowed to access. However, in the prior art, since the user equipment needs to measure all adjacent private cells of the macro cell, the user equipment may perform unnecessary measurements and increase the burden of the user equipment.

Contents of the invention

The problem to be solved by the embodiments of the present invention is to provide a method and device for switching to a private cell, so that the user equipment only measures the adjacent private cells that it is allowed to access, and reduces the burden on the user equipment.

In order to achieve the above object, the technical solution of the embodiment of the present invention provides a method for switching to a private cell, including the following steps: the user equipment measures the information of the adjacent private cell that it is allowed to access; the user equipment transfers from the private cell select a target cell, and send the information of the target cell to the current cell; the user equipment performs cell handover according to the instruction of switching to the target cell sent by the current cell.

The technical solution of the embodiment of the present invention also provides a method for switching to a private cell, including the following steps: the user equipment measures the information of the private cell; the user equipment selects a target cell from the private cell, and selects the target cell The information of the cell is sent to the current cell; judging whether the user equipment is allowed to access the target cell, and if yes, the current cell instructs the user equipment to switch to the target cell.

The technical solution of the embodiment of the present invention also provides a device for switching to a private cell, including an adjacent private cell acquisition unit, an access-allowed private cell acquisition unit, and an access-allowed adjacent private cell acquisition unit; the adjacent private cell acquisition unit A private cell acquisition unit, configured to acquire a list of adjacent private cells; the access-allowed private cell acquisition unit, configured to acquire a list of private cells that user equipment is allowed to access; the access-allowed adjacent private cell acquisition unit , configured to acquire a list of adjacent private cells that the user equipment is allowed to access according to the list of neighboring private cells and the list of private cells that the user equipment is allowed to access.

The technical solution of the embodiment of the present invention also provides a device for switching to a private cell, including a correspondence storage unit and an access permission judgment unit, the correspondence storage unit is used to store the permission access between the user equipment and the target cell A correspondence list; the access permission judging unit is configured to judge whether the user equipment is allowed to access the target cell.

The technical solution of the embodiment of the present invention also provides a user equipment, including: a cell information measurement unit, a target cell selection unit, and a switching unit, the cell information measurement unit is used to measure the adjacent private cells that are allowed to access information; the target cell selection unit is configured to select a target cell from the 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 , configured to perform cell switching according to an instruction to switch to the target cell sent by the current cell.

An embodiment of the above technical solution has the following advantages: the embodiment of the present invention only measures the adjacent private cells that the user equipment is allowed to access, reducing the burden on the user equipment;

In addition, the embodiment of the present invention increases the judgment of whether the user equipment is allowed to access the target cell, reduces invalid handover attempts by the user equipment that is not allowed to access the private cell, and increases the success rate of handover.

Description of drawings

FIG. 1 is a flowchart of a method for switching to a private cell according to Embodiment 1 of the present invention;

FIG. 2 is a flowchart of a method for switching to a private cell according to Embodiment 2 of the present invention;

FIG. 3 is a flowchart of a method for switching to a private cell according to Embodiment 3 of the present invention;

FIG. 4 is a flowchart of a method for switching to a private cell according to Embodiment 4 of the present invention;

5 is a flowchart of a method for switching to a private cell according to Embodiment 5 of the present invention;

FIG. 6 is a structural diagram of a device for switching to a private cell according to an embodiment of the present invention;

FIG. 7 is a structural diagram of another device for switching to a private cell according to an embodiment of the present invention;

Fig. 8 is a structural diagram of a user equipment according to an embodiment of the present invention.

Detailed ways

Below in conjunction with accompanying drawing and embodiment, the specific embodiment of the present invention is described in further detail:

The flow of the method for switching to a private cell according to Embodiment 1 of the present invention is shown in FIG. 1. First, the user equipment measures the information of adjacent private cells that it is allowed to access, and then the user equipment selects a target cell from the private cells. and sending the information of the target cell to the current cell, and finally the user equipment performs cell handover according to the instruction of switching to the target cell sent by the current cell. In this embodiment, it is assumed that the list of private cells that the user equipment is allowed to access is stored in the core network. Referring to FIG. 1, this embodiment includes the following steps:

In step s101, the current cell acquires a list of adjacent private cells.

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

In step s102, the user equipment establishes a connection with the current cell, and the user equipment is in an Active state; during the connection establishment process, the current cell obtains a list of private cells that the user equipment is allowed to access from the core network.

Step s103, the current cell acquires a list of adjacent private cells that the user equipment is allowed to access according to the list of adjacent private cells and the list of private cells that the user equipment is allowed to access. That is, the current cell compares the list of adjacent private cells and the list of private cells that the user equipment is allowed to access, and determines the private cells that the user equipment is allowed to access among the neighboring private cells.

Step s104, the current cell sends the list of adjacent private cells that the user equipment is allowed to access to the user equipment.

Step s105, the user equipment measures the information of the cells 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 through a measurement report.

Step s106, if the user equipment is allowed to access the target cell, the current cell sends a handover request to the target cell.

In step s107, the target cell determines to accept the user equipment according to the resources of the cell, and sends a handover response to the current cell.

Step s108, the current cell sends a handover command to the user equipment.

Step s109, the user equipment switches to the target cell.

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

The flow of the method for switching to a private cell according to Embodiment 2 of the present invention is shown in FIG. 2 . In this embodiment, it is 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, this embodiment includes the following steps:

In step s201, the current cell acquires a list of adjacent private cells.

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

In step s202, the user equipment establishes a connection with the current cell, and the user equipment is in an Active state; during the connection establishment process, the current cell obtains a list of private cells that the user equipment is allowed to access from the core network.

In step s203, the current cell obtains a list of adjacent private cells that the user equipment is allowed to access according to the list of adjacent private cells and the list of private cells that the user equipment is allowed to access. That is, the current cell compares the list of adjacent private cells and the list of private cells that the user equipment is allowed to access, and determines the private cells that the user equipment is allowed to access among the neighboring private cells.

Step s204, the current cell sends the list of adjacent private cells that the user equipment is allowed to access to the user equipment.

Step s205, the user equipment measures the information of the cells 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 through a measurement report.

Step s206, the current cell judges whether the target cell is a private cell according to the result of the measurement report, if it is a private cell, then judges whether the target cell is in the list of private cells that the user equipment is allowed to access, if yes, go 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.

In step s208, the target cell determines to accept the user equipment according to the resources of the 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.

This embodiment only measures the adjacent private cells that the user equipment is allowed to access, which reduces the burden on the user equipment; and, this embodiment increases the judgment of whether the user equipment is allowed to access the target cell, reducing the number of private cells that are not allowed to access the private cell. User equipments make invalid handover attempts, increasing the success rate of handover.

The flow of the method for switching to a private cell according to Embodiment 3 of the present invention is shown in FIG. Identity Model, customer identification module) card), with reference to Fig. 3, present embodiment comprises the following steps:

In step s301, the current cell acquires a list of adjacent private cells.

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

In step s302, the user equipment establishes a connection with the current cell, and the user equipment is in the Active state; during the process of establishing the connection, the user equipment sends a list of private cells allowed to be accessed by itself to the current cell.

In step s303, the current cell obtains a list of adjacent private cells that the user equipment is allowed to access according to the list of adjacent private cells and the list of private cells that the user equipment is allowed to access. That is, the current cell compares the list of adjacent private cells and the list of private cells that the user equipment is allowed to access, and determines the private cells that the user equipment is allowed to access among the neighboring private cells.

Step s304, the current cell sends the list of adjacent private cells that the user equipment is allowed to access to the user equipment.

Step s305, the user equipment measures the information of the cells 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 through a measurement report.

Step s306, the current cell sends a handover request to the target cell, and the handover request carries a user equipment identifier.

Step s307, the target cell judges whether the user equipment is in the user equipment list.

The target cell first judges whether the user equipment identifier carried in the handover request is the same type as the user equipment identifier stored in the user equipment list, and if so, directly checks whether the user equipment is in the user equipment list Judging; otherwise, the target cell sends a user equipment identity conversion request to the core network; the core network converts the user equipment identity carried in the handover request to a user of the same type as the user equipment identity stored in the user equipment list Equipment identifier: the target cell judges whether the user equipment is in the user equipment list according to the converted user equipment identifier. If the target cell stores a list of user equipments allowed to access it, then determine whether the user equipment is in the list of user equipments, if yes, the user equipment is allowed to access the target cell, otherwise not allowed Access the target cell.

If the target cell does not store a list of user equipments allowed to access, the target cell sends the user equipment identification carried in the handover request to the core network, and the core network determines whether the user equipment is allowed to access The judgment of the target cell; or the target cell obtains the user equipment list from the core network, and then judges whether the user equipment is in the user equipment list.

In step s308, the target cell determines to accept the user equipment according to the resources of the 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.

This embodiment only measures the adjacent private cells that the user equipment is allowed to access, which reduces the burden on the user equipment; and, this embodiment increases the judgment of whether the user equipment is allowed to access the target cell, reducing the number of private cells that are not allowed to access the private cell. User equipments make invalid handover attempts, increasing the success rate of handover.

The flow of the method for handing over to a private cell according to Embodiment 4 of the present invention is shown in FIG. 42 . In this embodiment, it is assumed that the core network stores a list of allowed access correspondence between user equipment and target cells, and the correspondence list includes each user equipment A list of private cells allowed to be accessed or a list of user equipments allowed to be accessed by each private cell; and the user equipment is handed over from cell A to the current cell. With reference to Fig. 4, present embodiment comprises the following steps:

In step s401, the current cell acquires a list of adjacent private cells.

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

In step s402, the user equipment establishes a connection with cell A, and the user equipment is in the Active state; during the process of establishing the connection, the user equipment sends a list of private cells allowed to be accessed to cell A.

In step s403, the user equipment is handed over from cell A to the current cell. During the handover process, cell A sends the list of private cells that the user equipment is allowed to access to the current cell.

Step s404, the current cell acquires a list of adjacent private cells that the user equipment is allowed to access according to the list of adjacent private cells and the list of private cells that the user equipment is allowed to access. That is, the current cell compares the list of adjacent private cells and the list of private cells that the user equipment is allowed to access, and determines the private cells that the user equipment is allowed to access among the neighboring private cells.

Step s405, the current cell sends the list of adjacent private cells that the user equipment is allowed to access to the user equipment.

Step s406, the user equipment measures the information of the cells 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 through a measurement report.

In step s407, the current cell sends a handover request to the core network; the handover request carries the identifier of the target cell, and may also carry a flag indicating that the target cell is a private cell.

In step s408, the core network judges whether the user equipment corresponds to the target cell according to the list of allowed access correspondence between the user equipment and the target cell, and if so, proceeds to step s409, otherwise, access to the target cell is not allowed. The access-allowed correspondence list between the user equipment and the target cell includes a list of private cells that each user equipment is allowed to access or a list of user equipment that each private cell is allowed to access.

Firstly, the core network recognizes that the target cell of this handover is a private cell. The identification process can be based on the identification carried in the handover request, or can be directly identified according to the identification of the target cell.

Then the core network judges whether the user equipment corresponds to the target cell, that is, verifies the legitimacy of the handover request according to the identity of the user equipment and the identity of the target cell.

Step s409, forwarding the handover request message to the target cell.

In step s410, the target cell determines to accept the user equipment according to the resources of the cell, and sends a handover response to the current cell.

In step s411, the current cell sends a handover command to the user equipment.

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

This embodiment only measures the adjacent private cells that the user equipment is allowed to access, which reduces the burden on the user equipment; and, this embodiment increases the judgment of whether the user equipment is allowed to access the target cell, reducing the number of private cells that are not allowed to access the private cell. User equipments make invalid handover attempts, increasing the success rate of handover.

The flow of the method for switching to a private cell in Embodiment 5 of the present invention is shown in FIG. 5. In this embodiment, it is assumed that the list of private cells that user equipment is allowed to access is stored in the core network. This embodiment includes the following steps:

In step s501, the current cell acquires a list of adjacent private cells.

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

Step s502, the current cell sends the adjacent private cell list to the user equipment.

Step s503, the user equipment measures the information of the cells 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 through a measurement report.

Step s504, the current cell judges whether the target cell is a private cell according to the result of the measurement report, and if it is a private cell, then judges whether the target cell is in the list of private cells that the user equipment is allowed to access, if yes, go to step s505, otherwise end .

Step s505, if the user equipment is allowed to access the target cell, the current cell sends a handover request to the target cell.

In step s506, the target cell determines to accept the user equipment according to the resource conditions 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 judgment of whether the user equipment is allowed to access the target cell is added, which reduces invalid handover attempts by the user equipment that is not allowed to access the private cell, and increases the success rate of handover.

An apparatus for switching to a private cell according to an embodiment of the present invention is as shown in FIG. 6 , including: an adjacent private cell acquisition unit 61 , an access-allowed private cell acquisition unit 62 , and an access-allowed adjacent private cell acquisition unit 63 and allow access judging unit 64; adjacent private cell obtaining unit 61 is used to obtain a list of adjacent private cells; allowed access private cell obtaining unit 62 is used to obtain a list of private cells that user equipment is allowed to access, which can be achieved through the following steps Obtain at least one of the following ways: the current cell is obtained from the core network during the process of establishing a connection with the user equipment; the current cell is obtained through the report of the user equipment during the process of establishing a connection with the user equipment; If it is handed over, the current cell is acquired from other cells during the handover process; the adjacent private cell acquisition unit 63 that is allowed to access is used to obtain the private cell list based on the adjacent private cell list and the private cell list that the user equipment is allowed to access , to obtain a list of adjacent private cells that the user equipment is allowed to access; the access permission judging unit 64 is used to judge whether the user equipment is allowed to access the target cell.

This embodiment only measures the adjacent private cells that the user equipment is allowed to access, which reduces the burden on the user equipment; and, this embodiment increases the judgment of whether the user equipment is allowed to access the target cell, reducing the number of private cells that are not allowed to access the private cell. User equipments make invalid handover attempts, increasing the success rate of handover.

An apparatus for switching to a private cell according to an embodiment of the present invention is as shown in FIG. 7 , including: a correspondence relationship storage unit 71, an access-allowed judging unit 72, and an adjacent private cell acquisition unit 73 that allows access; Unit 71 is used to store a list of allowed access correspondence between user equipment and target cells, the list includes a list of private cells that each user equipment is allowed to access or a list of user equipment that each private cell allows access to; The unit 72 is used to determine whether the user equipment is allowed to access the target cell according to the list of allowed access correspondence between the user equipment and the target cell; The list of allowed access correspondence between the device and the target cell, and obtain the list of adjacent private cells that the user equipment is allowed to access, wherein the list of allowed access correspondence between the user equipment and the target cell can be performed in at least one of the following ways Acquisition: The current cell is obtained from the core network during the process of establishing a connection with the user equipment; the current cell is obtained through the report of the user equipment during the process of establishing a connection with the user equipment; if the user equipment is handed over from other cells, the current cell is in the Obtained from other cells during handover.

This embodiment only measures the adjacent private cells that the user equipment is allowed to access, which reduces the burden on the user equipment; and, this embodiment increases the judgment of whether the user equipment is allowed to access the target cell, reducing the number of private cells that are not allowed to access the private cell. User equipments make invalid handover attempts, increasing the success rate of handover.

The structure of a user equipment according to an embodiment of the present invention is shown in FIG. 8 , including a cell information measurement unit 81, a target cell selection unit 82, a handover unit 83, and a storage unit 84 for allowing access to private cell information; wherein, the cell information measurement unit 81 is used to measure the information of adjacent private cells that are allowed to access; the target cell selection unit 82 is used to select the target cell from the private cells according to the cell information measured by the cell information measurement unit 81, and the information of the target cell sent to the current cell; the switching unit 83 is used to perform cell switching according to the instruction of switching to the target cell sent by the current cell; the private cell information storage unit 84 is used to store the private cell that is allowed to be accessed by the user equipment list, and send the list to the current cell.

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

The above are only embodiments of the present invention, and it should be pointed out that for those of ordinary skill in the art, some improvements and modifications can also be made without departing from the principles of the present invention, and these improvements and modifications should also be It is regarded as the protection scope of the present invention.

Claims (27)

1. A method for switching to a private cell, comprising the following steps: The user equipment measures the information of the adjacent private cells that it is allowed to access; The user equipment selects a target cell from the private cells, and sends information of the target cell to the current cell; The user equipment performs cell handover according to the indication sent by the current cell to switch to the target cell. 2. The method for handing over to a private cell according to claim 1, wherein the user equipment measures information of adjacent private cells that it is allowed to access, specifically comprising: The current cell obtains the list of adjacent private cells; The current cell acquires a list of private cells that the user equipment is allowed to access; The current cell acquires a list of adjacent private cells that the user equipment is allowed to access according to the list of adjacent private cells and the list of private cells that the user equipment is allowed to access; The current cell sends the list of adjacent private cells that the user equipment is allowed to access to the user equipment; The user equipment measures the information of the cells in the received cell list. 3. The method for switching to a private cell according to claim 2, wherein the current cell acquires a list of private cells that the user equipment is allowed to access, specifically: Obtain from the core network during the process of establishing a connection with the user equipment, or Obtain from the user equipment during the process of establishing a connection with the user equipment, or During the handover process of the user equipment to the current cell, it is obtained from the cell where the user equipment is located before the handover. 4. The method for switching to a private cell according to claim 1, further comprising: judging whether the user equipment is allowed to access the target cell before the current cell instructs the user equipment to switch to the target cell, If yes, perform handover of the user equipment to the target cell. 5. The method for switching to a private cell according to claim 4, wherein the judging whether the user equipment is allowed to access the target cell specifically comprises: The current cell judges whether the target cell is in the 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, otherwise, the user equipment is not allowed to access the target cell. 6. The method for switching to a private cell according to claim 4, wherein the judging whether the user equipment is allowed to access the target cell specifically comprises: 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 allowed to access it, then determine whether the user equipment is in the list of user equipments, if yes, the user equipment is allowed to access the target cell, otherwise not allowed Access the target cell. 7. The method for switching to a private cell according to claim 6, further comprising: before judging whether the user equipment is in the user equipment list: Judging whether the user equipment identifier carried in the handover request is of the same type as the user equipment identifier stored in the user equipment list, if yes, directly performing a judgment on whether the user equipment 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 a user equipment identifier of the same type as the user equipment identifier stored in the user equipment list; The target cell judges whether the user equipment is in the user equipment list according to the converted user equipment identifier. 8. The method for switching to a private cell according to claim 6, characterized in that the method further comprises: If the target cell does not store a list of user equipments allowed to access it, then The target cell sends the user equipment identifier carried in the handover request to the core network, and the core network judges whether the user equipment is allowed to access the target cell; or The target cell obtains the user equipment list from the core network, and then judges whether the user equipment is in the user equipment list. 9. The method for switching to a private cell according to claim 4, wherein the judging whether the user equipment is allowed to access the target cell specifically comprises: The current cell sends a handover request carrying the identity of the target cell to the core network; The core network judges whether the user equipment corresponds to the target cell according to the list of allowed access correspondence between the user equipment and the target cell, and if so, the user equipment is allowed to access the target cell, otherwise the access is not allowed The target cell. 10. The method for switching to a private cell according to claim 9, wherein the list of allowed access correspondence between the user equipment and the target cell includes: a list of private cells that each user equipment is allowed to access or each A list of user equipments allowed to access a private cell. 11. A method for switching to a private cell, comprising the following steps: The user equipment measures the information of the private cell; The user equipment selects a target cell from the private cells, and sends information of the target cell to the current cell; Judging whether the user equipment is allowed to access the target cell, if yes, the current cell instructs the user equipment to switch to the target cell. 12. The method for switching to a private cell according to claim 11, wherein the judging whether the user equipment is allowed to access the target cell specifically comprises: The current cell judges whether the target cell is in the 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, otherwise, the user equipment is not allowed to access the target cell. 13. The method for switching to a private cell according to claim 11, wherein the judging whether the user equipment is allowed to access the target cell specifically comprises: 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 allowed to access it, then determine whether the user equipment is in the list of user equipments, if yes, the user equipment is allowed to access the target cell, otherwise not allowed Access the target cell. 14. The method for switching to a private cell according to claim 13, further comprising: before judging whether the user equipment is in the user equipment list: Judging whether the user equipment identifier carried in the handover request is of the same type as the user equipment identifier stored in the user equipment list, if yes, directly performing a judgment on whether the user equipment 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 a user equipment identifier of the same type as the user equipment identifier stored in the user equipment list; The target cell judges whether the user equipment is in the user equipment list according to the converted user equipment identifier. 15. The method for switching to a private cell according to claim 13, wherein if the target cell does not store a list of user equipments allowed to access it, then The target cell sends the user equipment identifier carried in the handover request to the core network, and the core network judges whether the user equipment is allowed to access the target cell; or The target cell obtains the user equipment list from the core network, and then judges whether the user equipment is in the user equipment list. 16. The method for switching to a private cell according to claim 11, wherein the judging whether the user equipment is allowed to access the target cell specifically comprises: The current cell sends a handover request carrying the identity of the target cell to the core network; The core network judges whether the user equipment corresponds to the target cell according to the list of allowed access correspondence between the user equipment and the target cell, and if so, the user equipment is allowed to access the target cell, otherwise the access is not allowed The target cell. 17. The method for switching to a private cell according to claim 16, wherein the list of allowed access correspondence between the user equipment and the target cell includes: a list of private cells that each user equipment is allowed to access or each A list of user equipments allowed to access a private cell. 18. The method for handing over to a private cell according to claim 11, wherein the private cell measured by the user equipment is an adjacent private cell that the user equipment is allowed to access. 19. The method for switching to a private cell according to claim 18, wherein the user equipment measures the information of the private cell, specifically comprising: The current cell obtains the list of adjacent private cells; The current cell acquires a list of private cells that the user equipment is allowed to access; The current cell acquires a list of adjacent private cells that the user equipment is allowed to access according to the list of adjacent private cells and the list of private cells that the user equipment is allowed to access; The current cell sends the list of adjacent private cells that the user equipment is allowed to access to the user equipment; The user equipment measures the information of the cells in the received cell list. 20. The method for switching to a private cell according to claim 19, wherein the current cell acquires a list of private cells that the user equipment is allowed to access, specifically: Obtain from the core network during the process of establishing a connection with the user equipment, or Obtain from the user equipment during the process of establishing a connection with the user equipment, or During the handover process of the user equipment to the current cell, it is obtained from the cell where the user equipment is located before the handover. 21. A device for switching to a private cell, comprising: an adjacent private cell acquisition unit, an access-allowed private cell acquisition unit, and an access-allowed adjacent private cell acquisition unit; The adjacent private cell obtaining unit is used to obtain a list of adjacent private cells; The access-allowed private cell obtaining unit is configured to obtain a list of private cells that the user equipment is allowed to access; The access-allowed adjacent private cell acquiring unit is configured to acquire a list of adjacent private cells that the user equipment is allowed to access according to the adjacent private cell list and the list of private cells that the user equipment is allowed to access. 22. The device for switching to a private cell according to claim 21, further comprising an access permission judging unit, configured to judge whether the user equipment is allowed to access the target cell according to the list of private cells that the user equipment is allowed to access. 23. A device for switching to a private cell, comprising: a correspondence storage unit and an access permission judgment unit, The correspondence storage unit is configured to store a list of correspondences between the user equipment and the target cell to allow access; The access permission judging unit is configured to judge whether the user equipment is allowed to access the target cell according to the list of allowed access correspondences between the user equipment and the target cell. 24. The device for switching to a private cell according to claim 23, further comprising an adjacent private cell acquisition unit that is allowed to access, configured to obtain a list of adjacent private cells and the relationship between the user equipment and the target cell The access-allowed correspondence list is used to obtain a list of adjacent private cells that the user equipment is allowed to access. 25. The apparatus for switching to a private cell according to claim 23, wherein the list of allowed access correspondence between the user equipment and the target cell includes: a list of private cells that each user equipment is allowed to access or each A list of user equipments allowed to access the private cell. 26. A user equipment, characterized by comprising: a cell information measurement unit, a target cell selection unit, and a handover unit, The cell information measuring unit is used to measure the information of the neighboring private cells that it is allowed to access; The target cell selection unit is configured to select a target cell from the 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 switching according to an instruction to switch to the target cell sent by the current cell. 27. The user equipment according to claim 26, further comprising a storage unit for allowing access to private cell information, configured to store a list of private cells that the user equipment is allowed to access, and send the list to the current district.

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