WO2015117432A1

WO2015117432A1 - Method and device for reselecting closed subscriber group cell, and storage medium

Info

Publication number: WO2015117432A1
Application number: PCT/CN2014/090383
Authority: WO
Inventors: 胡力
Original assignee: 深圳市中兴微电子技术有限公司
Priority date: 2014-07-21
Filing date: 2014-11-05
Publication date: 2015-08-13
Also published as: CN105282797B; CN105282797A

Abstract

Disclosed is a method for reselecting a closed subscriber group (CSG) cell. The method comprises: matching, by a UE, CGI information about a macro cell in which the UE resides with a neighbour CGI list in historical residence information about a CSG cell of the UE, and when the matching is successful, measuring a frequency point of the CSG cell corresponding to the neighbour CGI list, the matching of which is successful; and when it is determined that the ID of a physical cell which is obtained by way of measurement is within the range of the ID of a CSG physical cell in the historical residence information about the CSG cell of the UE, measuring and evaluating the physical cell, and when it is determined that the physical cell conforms to measurement and evaluation conditions, selecting the physical cell as a resident cell. Also disclosed at the same time are a device for reselecting a CSG cell, and a storage medium.

Description

Method, device and storage medium for closed user group cell reselection

Technical field

The present invention relates to the field of mobile communication technologies of Long Term Evolution (LTE), and in particular, to a method, an apparatus, and a storage medium for cell reselection of a Closed Subscriber Group (CSG).

Background technique

CSG is a concept introduced for home base stations. The population using the home base station is divided into some user groups. Users who are qualified to use the home base station to provide services are considered to be members of the user group. The user group composed of these members is called Close the user group.

The CSG cell is generally used as an outdoor macro cell, that is, a supplement of a non-CSG cell, enhances indoor coverage, and alleviates the load of the outdoor macro cell to provide higher radio service quality. Therefore, the deployment of the CSG cell is generally covered by the existing macro cell. However, the user who subscribes to the home base station within the same macro cell coverage is also dynamically changed. There are unsubscribed users and new users. The coverage topology of the home base station changes very frequently with respect to the coverage of the macro cell. All CSG cells in the macro cell coverage are added to the neighbor relationship of the macro cell, and the system changes in time, which leads to a huge workload.

Since the macro cell does not have the neighbor relationship information of the CSG cell in the coverage area, the user equipment (UE, User Equipment) cannot perform the neighboring area information configuration according to the 3GPP (The 3rd Generation Partnership Project) protocol. The method of reselection is automatically reselected to the CSG cell.

Summary of the invention

In view of this, embodiments of the present invention are expected to provide a method and apparatus for CSG cell reselection. The storage medium can improve the success rate of the UE automatically reselecting to the CSG cell, and prolong the standby state of the UE idle state.

To achieve the above objective, the technical solution of the embodiment of the present invention is implemented as follows:

An embodiment of the present invention provides a method for reselecting a CSG cell, where the method includes:

The UE matches the CGI (Cell Global Identification) information of the macro cell in which the UE resides with the neighbor CGI list in the CSG cell history resident information of the UE. If the matching succeeds, the matching neighbor CGI is successfully matched. The CSG cell frequency point corresponding to the list is measured;

Determining that the measured physical cell identity code (ID, IDentity) is within the CSG physical cell ID range in the CSG cell history camp information of the UE, performing measurement evaluation on the physical cell, and determining that the physical cell is consistent When the evaluation condition is measured, the physical cell is selected as a camping cell.

In the above solution, before the UE matches the CGI information of the macro cell in which the UE resides with the neighbor CGI list in the CSG cell history resident information of the UE, the method further includes: the UE camping on the CSG cell, acquiring and And storing the CSG cell frequency point, the CSG physical cell ID range, and the neighboring cell CGI list of the CSG cell.

In the foregoing solution, the acquiring, by the UE, the CSG physical cell ID range and the neighbor CGI list of the CSG cell includes:

The UE extracts a CSG physical cell ID range in a system information block type (SIB) and a CGI list of an intra-frequency neighboring cell of the CSG cell, and extracts an inter-frequency neighboring cell of the CSG cell in the SIB5. a CGI list, the co-frequency neighbor CGI list of the CSG cell and the inter-frequency neighbor CGI list of the CSG cell together form a neighbor CGI list of the CSG cell;

The CGI information included in the CGI list of the neighboring cell of the CSG cell includes: a public land mobile network identity (PLMN, Public Land Mobile Network) ID and a cell. Identity CELL ID.

In the above solution, the measurement and evaluation condition is: the physical cell frequency point is an inter-frequency frequency point of the macro cell, or the physical cell frequency point is an intra-frequency frequency point of the macro cell, and the physical cell The signal quality is higher than the signal quality of the macro cell.

The embodiment of the present invention further provides a device for reselecting a CSG cell, where the device includes: a matching module and a measurement module;

The matching module is configured to match the CGI information of the macro cell where the UE resides with the neighbor CGI list in the CSG cell history resident information, and trigger the measurement module when the matching is successful;

The measuring module is configured to measure a frequency of a CSG cell corresponding to the CGI list of the neighboring cell that is successfully matched, and determine that the measured physical cell ID is within a range of the CSG physical cell ID in the historical camping information of the CSG cell, The physical cell performs measurement evaluation, and when determining that the physical cell meets the measurement evaluation condition, the physical cell is selected as a camping cell.

In the above solution, the device further includes: an obtaining module, configured to: when the UE camps on the CSG cell, acquire and save the CSG cell frequency point, the CSG physical cell ID range, and the neighboring cell CGI list of the CSG cell. .

In the above solution, the acquiring module is configured to extract a CSG physical cell ID range in the SIB4 and a CGI list of the CSG cell in the same-frequency neighboring cell, and extract a CGI list of the inter-frequency neighboring cells of the CSG cell in the SIB5; The CGI list of the CSG cell and the inter-frequency CGI list of the CSG cell together form a neighbor CGI list of the CSG cell;

The CGI information included in the neighbor CGI list of the CSG cell includes: a cell PLMN ID and a CELL ID.

The embodiment of the invention further provides a computer storage medium, wherein the computer storage medium is stored There is stored a computer program for performing the above method of CSG cell reselection in accordance with an embodiment of the present invention.

The method, device, and storage medium for CSG cell reselection provided by the embodiment of the present invention, the UE matches the CGI of the macro cell in which the UE resides with the neighbor CGI list in the historical residency information of the UE, and when the matching is successful, The CSG cell frequency point corresponding to the successful neighboring cell CGI list is measured; when the measured physical cell ID is determined to be within the CSG physical cell ID range in the historical camp information of the UE, the physical cell is measured and evaluated, and When it is determined that the physical cell meets the measurement evaluation condition, the physical cell is selected as a camped cell. In this way, the UE can be automatically reselected to the CSG cell when the user is not aware of the CSG cell, and the success rate of the UE automatically reselecting to the CSG cell is improved, and the UE power consumption is reduced to increase the idle state of the UE. time.

DRAWINGS

1 is a schematic flowchart of a method for reselecting a CSG cell according to an embodiment of the present invention;

2 is a schematic flowchart of a method for reselecting a CSG cell according to Embodiment 2 of the present invention;

3 is a schematic diagram of a topological relationship between a macro cell and a CSG cell according to an embodiment of the present invention;

4 is a schematic flowchart of a method for reselecting a CSG cell according to Embodiment 3 of the present invention;

FIG. 5 is a schematic flowchart of a method for reselecting a CSG cell according to Embodiment 4 of the present invention; FIG.

FIG. 6 is a schematic structural diagram of a device for reselecting a CSG cell according to an embodiment of the present invention.

detailed description

FIG. 1 is a schematic flowchart of a method for reselecting a CSG cell according to an embodiment of the present invention. As shown in FIG. 1 , the method for reselecting a CSG cell in this embodiment includes:

Step 101: The UE matches the CGI information of the macro cell in which the UE resides with the neighboring cell CGI list in the CSG cell history resident information of the UE. If the matching succeeds, the CSG cell frequency corresponding to the matching neighbor CGI list is matched. Make measurements;

Before the step, the method further includes: the UE camps on the CSG cell, acquires related information of the CSG cell, and saves related information of the CSG cell to CSG cell history resident information (Csg History Infomation) of the UE, At the same time, the non-volatile memory is written, so that the information about the CSG cell is not lost after the UE is turned off, and can be read and used after the next power-on;

The CSG cell related information includes: a CSG cell frequency point (Csg Earfcn), a CSG ID, a CSG cell PLMN ID, a CSG physical cell ID range, and a neighboring cell CGI list of the CSG cell.

Correspondingly, the CSG cell history resident information of the UE includes: a CSG cell frequency point in which the UE history resides, a CSG ID, a PLMN ID of the CSG cell, a CSG physical cell ID range, and a neighbor CGI list of the CSG cell;

Here, the UE camps on a CSG cell for the first time, and requires the user to camp on the allowed CSG cell by using the manual CSG selection mode. Alternatively, the UE is set to the automatic CSG selection mode, and the CSG cell is the strongest coverage after the UE is powered on, and the UE is in the UE. During the initial camping process, the strongest CSG cell camping is selected;

The obtaining, by the UE, the CSG physical cell ID range and the neighboring cell CGI list of the CSG cell includes:

The UE extracts a CSG physical cell ID range in the SIB4 and a CGI list of the same-frequency neighboring cell of the CSG cell, and extracts a CGI list of the inter-frequency neighboring cell of the CSG cell in the SIB5, where the CSG cell is the same The CGI list of the frequency neighboring cell and the CGI list of the inter-frequency neighboring cell of the CSG cell together form a neighboring CGI list of the CSG cell, and the neighboring cell CGI list of the CSG cell can store the neighboring cells of the N CSG cells at most CGI information, N is a positive integer, and the value of N can be set according to the actual situation;

Here, the CGI information included in the neighbor CGI list of the CSG cell includes: a cell PLMN ID and a CELL ID.

In an embodiment, the UE acquires a CSG physical cell ID range and a neighboring cell CGI of the CSG cell. Before the list, the method further includes: adding a cell identity cell in the SIB4 and the SIB5, and setting the cell identity cell to be mandatory only for the CSG cell, so that the existing ordinary The configuration of the system information SIB4 of the macro cell increases the CGI information of the CSG cell in the same-frequency neighboring cell to the same-frequency neighboring cell list in the SIB4, and increases the CGI information of the inter-frequency neighboring cell of the CSG cell to the SIB5. a frequency neighboring cell list; the same-frequency neighboring cell list structure of the SIB4 and the inter-frequency neighboring cell list structure of the SIB5 after the cell identity identifying cell is added include: a physicsCellId cell, a q-OffsetCell cell, and a cellIdentity cell;

Here, it should be noted that the operation before the UE selects and accesses the macro cell only needs to be performed in the process of using the CSG cell reselection in the embodiment of the present invention, that is, only the UE has saved the CSG cell. The related information can be used, and the subsequent CSG cell reselection in the UE can be directly used.

In an embodiment, the UE matches the CGI information of the macro cell with the neighbor CGI list in the CSG cell history resident information of the UE. If the matching succeeds, the matching CGI list in the neighboring cell is successfully stored. The CGI information of the macro cell may indicate that the macro cell is a neighboring cell of the CSG cell corresponding to the CGI list of the neighboring cell that is successfully matched;

The measuring the CSG cell frequency point corresponding to the successfully matched neighbor CGI list includes: detecting a physical cell ID at the CSG cell frequency point.

Step 102: Determine, when the measured physical cell ID is within a CSG physical cell ID range in the CSG cell history camp information of the UE, perform measurement and evaluation on the physical cell, and determine that the physical cell meets the measurement and evaluation condition. Selecting the physical cell as a camping cell;

Here, when the UE detects that the physical cell ID exists on the CSG cell frequency point, and determines that the measured physical cell ID is within the CSG physical cell ID range in the CSG cell history camp information of the UE, the physical cell is indicated. For the CSG cell, the measurement and evaluation of the physical cell can be turned on;

The measurement evaluation condition is: the physical cell frequency point is an inter-frequency frequency point of the macro cell, Or the physical cell frequency point is the same frequency frequency point of the macro cell, and the signal quality of the physical cell is higher than the signal quality of the macro cell.

2 is a schematic flowchart of a method for reselecting a CSG cell according to Embodiment 2 of the present invention. In the embodiment of the present invention, a UE has camped on a CSG cell, and saves related information of the CSG cell to a CSG cell history resident information. The UE is in an idle state, and the method for reselecting the CSG cell in this embodiment includes:

Step 201: The UE selects and accesses the macro cell.

Here, the UE may select and access the macro cell by using an existing access method.

Step 202: Match the CGI information of the macro cell with the neighbor CGI list in the CSG cell history resident information of the UE, and determine whether the matching is successful. If the matching is successful, go to step 203. If the matching fails, perform the step. 207;

Here, the CGI information of the macro cell is matched with the neighbor CGI list in the CSG cell history residing information. If the matching is successful, the matching CGI information of the macro cell is stored in the neighboring CGI list. In other words, the macro cell is a neighboring cell of the CSG cell corresponding to the CGI list of the neighboring cell that is successfully matched.

Step 203: Perform measurement on the CSG cell frequency point corresponding to the matching neighbor cell CGI list, and determine whether the measured physical cell ID is within the CSG physical cell ID range in the CSG cell history camp information, if in the CSG physical cell. Within the ID range, step 204 is performed; otherwise, step 207 is performed;

Here, when it is detected that the physical cell ID of the CSG cell frequency point corresponding to the matching neighbor cell CGI list is within the CSG physical cell ID range, it indicates that the physical cell is a CSG cell, and the measurement of the physical cell can be started. Evaluation.

Step 204: Determine whether the physical cell is the same frequency frequency point of the macro cell, and if yes, perform step 205; if not, execute step 206.

Step 205: Determine whether the signal quality of the physical cell is higher than the signal quality of the macro cell. The amount, if yes, is performed in step 206; otherwise, step 207 is performed.

Step 206: The UE selects the physical cell as a camping cell.

Here, the specific operation of the UE to camp on the physical cell includes reading cell system information, matching a CSG ID, and the like.

Step 207: End the current processing flow;

Here, the UE is not reselected to the CSG cell, and the measurement and evaluation and reselection process of the same frequency/inter-frequency of the macro cell can be performed.

3 is a schematic diagram of a topological relationship between a macro cell and a CSG cell according to an embodiment of the present invention. As shown in FIG. 3, a CSG cell (CELL_CSG) and three macro cells (CELL_1, CELL_2, CELL_3) are included, and the information of each cell is as follows: :

Table 1

The three large hexagons in Figure 3 represent the wireless coverage of CELL_1, CELL_2, and CELL_3, respectively. The small hexagon indicates the wireless coverage of CELL_CSG, where CELL_CSG and CELL_1 are the same frequency, CELL_CSG and CELL_2 are different frequencies, and CELL_CSG is wireless. The part of the coverage overlaps with the CELL_1 and the other part overlaps with the CELL_2. Therefore, when the CELL_CSG cell neighbor information is configured, the same-frequency neighbor list of the SIB4 includes the cellIdentity1 in the CGI of the same-frequency neighbor CELL_1, and the inter-frequency neighbor list of the SIB5. The cell Identity2 in the CGI of the same-frequency neighboring cell CELL_2 is included. When the UE camps on the CELL_CSG, the CSG cell history-resident information of the UE includes: the CELL_CSG frequency, the PLMN ID, the CSG ID, and the CSG physical cell. ID range, and a list of neighboring CGIs of the CELL_CSG; wherein The CGI list of the neighbor cell CGI of the CELL_CSG includes the CGI information of the macro cells CELL_1 and CELL_2.

4 is a schematic flowchart of a method for reselecting a CSG cell according to a third embodiment of the present invention. In conjunction with FIG. 3, in the embodiment of the present invention, a UE has camped on a CELL_CSG and saves related information of the CELL_CSG to a CSG cell history station of the UE. In the information, the UE is in an idle state, and moves to CELL_1, CELL_3, and CELL_2 in order, and moves to the CELL_CSG again. As shown in FIG. 4, the method for reselecting the CSG cell in this embodiment includes:

Step 401: The UE moves and camps on the macro cell CELL_1;

Here, the UE may camp on the macro cell CELL_1 using an existing access method.

Step 402: Match CGI information of the macro cell CELL_1 with a neighbor CGI list in the CSG cell history resident information of the UE.

Here, since the CGI of the macro cell CELL_1 exists in the neighbor CGI list of the CELL_CSG, the matching succeeds, indicating that CELL_1 is the neighbor of the CELL_CSG.

Step 403: Perform measurement on the CELL_CSG frequency point, and determine whether the measured physical cell ID is within a CSG physical cell ID range in the CSG cell history resident information of the UE.

Here, the cell ID of the CELL_CSG is within the CSG physical cell ID range due to the measured cell ID of the CELL_CSG whose signal quality is gradually weakened.

Step 404: Determine whether the CELL_CSG frequency point is the same frequency frequency point of the CELL_1;

Here, the CELL_CSG frequency point is the same frequency frequency point of the CELL_1.

Step 405: Determine whether the signal quality of the CELL_CSG is higher than the signal quality of the CELL_1.

Here, since the UE has moved to CELL_1 at the CELL_CSG, the signal quality of the CELL_1 is higher than the signal quality of the CELL_CSG, and therefore, the UE does not reselect to the CELL_CSG.

Step 406: The UE moves and camps on the macro cell CELL_3;

Here, the UE may camp on the macro cell CELL_3 using the existing access method.

Step 407: Match the CGI of the macro cell CELL_3 with the neighbor CGI list in the CSG cell history resident information of the UE.

Here, since the CGI list of the neighboring cell CGI of the CELL_CSG does not contain the CGI of the CELL_3, the matching fails, indicating that the macro cell CELL_3 is not a neighbor of the CELL_CSG, and therefore, the UE does not reselect to the CELL_3.

Step 408: The UE moves and camps on the macro cell CELL_2;

Here, the UE may camp on the macro cell CELL_2 using the existing access method.

Step 409: Match the CGI of the CELL_2 with the neighbor CGI list in the CSG cell history resident information of the UE.

Here, since the CGI of the macro cell CELL_2 exists in the CGI list of the neighboring cell of the CELL_CSG, the matching is successful, indicating that the macro cell CELL_2 is the neighboring cell of the CELL_CSG.

Step 410: Perform measurement on the CELL_CSG frequency point, and determine whether the measured physical cell ID is within a CSG physical cell ID range in the CSG cell history resident information.

Here, since the signal of the CELL_CSG gradually becomes better during the movement of the UE from the coverage of the macro cell CELL_2 to the coverage of the CELL_CSG, the UE will eventually detect the physical cell ID of the CELL_CSG on the f1, and the physical cell ID of the CELL_CSG Within the CSG physical cell ID range in the CSG cell history camp information.

Step 411: Determine whether the CELL_CSG is the same frequency point of the CELL_2.

Here, the CELL_CSG frequency point is the different frequency point of the CELL_2.

Step 412: The UE selects the CELL_CSG as a camping cell.

FIG. 5 is a schematic flowchart of a method for reselecting a CSG cell according to Embodiment 4 of the present invention. In conjunction with FIG. 3, in the embodiment of the present invention, a UE has camped on a CSG cell, and saves related information of the CSG cell to a CSG cell history. In the camping information, the UE is in an idle state, and moves to CELL_2, CELL_3, and CELL_1 in order, and moves to the CELL_CSG again. As shown in FIG. 5, the method for reselecting the CSG cell in this embodiment includes:

Step 501: The UE moves and camps on the macro cell CELL_2;

Step 502: Match the CGI of the macro cell CELL_2 with the neighbor CGI list in the CSG cell history resident information of the UE.

Here, since the CGI of the macro cell CELL_2 exists in the CGI list of the neighboring cell of the CELL_CSG, the matching is successful, indicating that CELL_2 is the neighboring cell of the CELL_CSG.

Step 503: Perform measurement on the CELL_CSG frequency point, and determine whether the measured physical cell ID is within a CSG physical cell ID range in the CSG cell history resident information.

Here, the physical cell ID of the CELL_CSG is within the CSG physical cell ID range due to the measured physical cell ID of the CELL_CSG whose signal quality is gradually weakened.

Step 504: Determine whether the CELL_CSG frequency point is the same frequency frequency point of the CELL_2.

Here, the CELL_CSG frequency point is an inter-frequency point of the CELL_2.

Step 505: The UE selects the CELL_CSG as a camping cell.

Here, as the UE moves away from CELL_CSG, the CELL_CSG is not reselected when CELL_CSG is not detected at the CELL_CSG frequency.

Step 506: The UE moves and camps on the macro cell CELL_3;

Step 507: Match the CGI of the macro cell CELL_3 with the neighbor CGI list in the CSG cell history resident information.

Here, since the neighboring CGI list of the CELL_CSG does not contain the CGI of the CELL_3, the matching fails, indicating that the macro cell CELL_3 is not a neighbor of the CELL_CSG, and therefore, the UE does not reselect to the CELL_3.

Step 508: The UE moves and camps on the macro cell CELL_1.

Step 509: Match the CGI of the macro cell CELL_1 with the neighbor CGI list in the CSG cell history resident information.

Here, since the CGI of the macro cell CELL_1 exists in the neighbor CGI list of the CELL_CSG, the matching is successful, indicating that the macro cell CELL_1 is the neighbor of the CELL_CSG.

Step 510: Perform measurement on the CELL_CSG frequency point, and determine whether the measured physical cell ID is within a CSG physical cell ID range in the CSG cell history resident information.

Here, since the signal of the CELL_CSG becomes good during the movement of the UE from the coverage of the macro cell CELL_1 to the coverage of the CELL_CSG, the UE will eventually detect the physical cell ID of the CELL_CSG on the f1, and the physical cell ID of the CELL_CSG is Within the CSG physical cell ID range.

Step 511: Determine whether the CELL_CSG frequency point is the same frequency frequency point of the CELL_1;

Step 512: Determine whether the signal quality of the CELL_CSG is higher than the signal quality of the CELL_1.

Here, as the UE moves from the coverage of CELL_1 to the coverage of the CELL_CSG, the signal quality of the CELL_CSG is getting better and better, and finally higher than the signal quality of the CELL_1, when the signal quality of the CELL_CSG is higher than that of the CELL_CSG. When the signal quality of CELL_1 is described, cell reselection to CELL_CSG may be initiated.

Step 513: The UE selects the CELL_CSG as a camping cell.

FIG. 6 is a schematic structural diagram of a device for reselecting a CSG cell according to an embodiment of the present invention. As shown in FIG. 6 , the device component of the CSG cell reselection in the embodiment of the present invention includes: a matching module 61 and a measurement module 62;

The matching module 61 is configured to match the CGI information of the macro cell in which the UE resides with the neighbor CGI list in the CSG cell history resident information, and trigger the measurement module 62 when the matching is successful;

The measuring module 62 is configured to measure the CSG cell frequency point corresponding to the successfully matched neighbor CGI list, and determine the measured physical cell ID in the CSG cell history resident information. When the CSG physical cell ID is in the range, the physical cell is measured and evaluated, and when it is determined that the physical cell meets the measurement evaluation condition, the physical cell is selected as the camping cell.

In an embodiment, the apparatus further includes: an obtaining module 63, configured to acquire related information of the CSG cell when the UE camps on the CSG cell, and save related information of the CSG cell to the CSG cell history resident In the information, the related information of the CSG cell is simultaneously written into the non-volatile memory, so that the information about the CSG is not lost after the shutdown, and can be read and used after the next power-on; wherein, the CSG cell The related information includes: a CSG cell frequency point, a CSG ID, a PLMN ID, a CSG physical cell ID range, and a neighboring cell CGI list of the CSG cell;

Correspondingly, the CSG cell history-resident information includes: a CSG cell frequency point in which the device history resides, a CSG ID, a PLMN ID of a CSG cell, a CSG physical cell ID range, and a neighboring cell CGI list of the CSG cell;

Obtaining, by the obtaining module 63, the CSG physical cell ID range and the neighbor CGI list of the CSG cell includes:

The obtaining module 63 extracts a CSG physical cell ID range in the SIB4 and a CGI list of the same-frequency neighboring cell of the CSG cell, and extracts an inter-frequency neighbor CGI list of the CSG cell in the SIB5, where the CSG cell has the same frequency. The CGI list of the neighboring cell and the CGI list of the inter-frequency neighboring cell of the CSG cell jointly form a CGI list of the neighboring cell of the CSG cell, and the CGI list of the neighboring cell of the CSG cell can store the CGI of the neighboring cell of the N CSG cells at most Information, N is a positive integer, and the value of N can be set according to the actual situation;

The CGI information included in the CGI list of the neighboring cell of the CSG cell includes: a cell PLMN ID and a CELL ID; where the CELL ID is the CSG cell that is added by adding a cellIdentity cell in the SIB4 and the SIB5. The neighboring cell identity information; the cell Identity cell is only mandatory for the CSG cell, and thus does not affect the configuration of the system information SIB4 of the existing normal macro cell, and increases the CSG cell's co-frequency neighbor CGI when the CSG cell is deployed. Add information to the same-frequency neighbor list in SIB4, and increase the CGI information of the CSG cell's inter-frequency neighboring area to SIB5. The inter-frequency neighbor list in the SIB4 after adding the cell identity cell and the inter-frequency neighbor list structure of the SIB5 include: physicsCellId, q-OffsetCell, and cellIdentity Cell.

In an embodiment, the matching module 61 matches the CGI information of the macro cell in which the UE resides with the neighbor CGI list in the CSG cell history resident information of the UE. If the matching succeeds, the matching neighbor CGI is successfully displayed. The CGI information of the macro cell is stored in the list, and the macro cell is a neighboring cell of the CSG cell corresponding to the CGI list of the neighboring cell that is successfully matched.

In an embodiment, the measuring module 62 determines that the measured physical cell ID is within a CSG physical cell ID range in the CSG cell history camping information, indicating that the physical cell is a CSG cell, and the physical cell may be turned on. Measurement assessment

The measurement evaluation condition is: the physical cell frequency point is an inter-frequency frequency point of the macro cell, or the physical cell frequency point is an intra-frequency frequency point of the macro cell, and the signal quality of the physical cell is higher than The signal quality of the macro cell.

The matching module, the measuring module, and the obtaining module in the CSG cell reselection device proposed in the embodiment of the present invention may be implemented by a processor, and may also be implemented by a specific logic circuit; wherein the processor may be a mobile terminal. Or a processor on the server. In practical applications, the processor may be a central processing unit (CPU), a microprocessor (MPU), a digital signal processor (DSP), or a field programmable gate array (FPGA).

In the embodiment of the present invention, if the above method for automatically transmitting a multimedia file is implemented in the form of a software function module, and is sold or used as a stand-alone product, it may also be stored in a computer readable storage medium. Based on such understanding, the technical solution of the embodiments of the present invention may be embodied in the form of a software product in essence or in the form of a software product stored in a storage medium, including a plurality of instructions. A computer device (which may be a personal computer, server, or network device, etc.) is caused to perform all or part of the methods described in various embodiments of the present invention. The foregoing storage medium includes: a U disk, a mobile hard disk, A medium that can store program code, such as a Read Only Memory (ROM), a disk, or an optical disk. Thus, embodiments of the invention are not limited to any specific combination of hardware and software.

Correspondingly, the embodiment of the present invention further provides a computer storage medium, where the computer storage medium stores a computer program, and the computer program is used to perform the method for reselecting the CSG cell in the embodiment of the present invention.

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

Claims

A method for reclosing a user group CSG cell reselection, the method comprising:

The user terminal UE matches the global cell identifier CGI information of the macro cell that is camped on with the neighbor cell CGI list in the CSG cell history camp information of the UE, and if the matching is successful, the CSG corresponding to the matching neighbor CGI list is successfully matched. The frequency of the cell is measured;

Determining, when the measured physical cell identity code ID is within a CSG physical cell ID range in the CSG cell history camp information of the UE, performing measurement evaluation on the physical cell, and determining that the physical cell meets the measurement evaluation condition And selecting the physical cell as a camping cell.
The method according to claim 1, wherein before the UE matches the CGI information of the macro cell in which the UE resides with the neighbor CGI list in the CSG cell history resident information of the UE, the method further includes: The CSG cell is reserved, and the CSG cell frequency point, the CSG physical cell ID range, and the neighboring cell CGI list of the CSG cell are obtained and saved.
The method of claim 2, wherein the obtaining, by the UE, the CSG physical cell ID range and the neighbor CGI list of the CSG cell comprises:

The UE extracts a CSG physical cell ID range in the system information block type SIB4 and a CGI list of the same frequency neighboring cell of the CSG cell, and extracts a CGI list of the inter-frequency neighboring cell of the CSG cell in the SIB5, where the CSG cell The CGI list of the same-frequency neighboring cell and the CGI list of the inter-frequency neighboring cell of the CSG cell together form a neighboring CGI list of the CSG cell;

The CGI information included in the CGI list of the neighboring cell of the CSG cell includes: a cell public land mobile network identity identifier PLMN ID and a cell identity identifier CELL ID.
The method according to any one of claims 1 to 3, wherein the measurement evaluation condition is: the physical cell frequency point is an inter-frequency frequency point of the macro cell, or the physical cell frequency point is the macro cell The same frequency point, and the signal quality of the physical cell is higher than the signal quality of the macro cell.
A device for reselecting a CSG cell, the device comprising: a matching module and a measurement module; among them,

The matching module is configured to match the CGI information of the macro cell where the UE resides with the neighbor CGI list in the CSG cell history resident information, and trigger the measurement module when the matching is successful;

The measuring module is configured to measure a frequency of a CSG cell corresponding to the CGI list of the neighboring cell that is successfully matched, and determine that the measured physical cell ID is within a range of the CSG physical cell ID in the historical camping information of the CSG cell, The physical cell performs measurement evaluation, and when determining that the physical cell meets the measurement evaluation condition, the physical cell is selected as a camping cell.
The apparatus according to claim 5, wherein the apparatus further comprises: an obtaining module configured to acquire and save the CSG cell frequency point, the CSG physical cell ID range, and the CSG when the UE camps on the CSG cell The neighborhood CGI list of the cell.
The apparatus according to claim 6, wherein the acquiring module is configured to extract a CSG physical cell ID range in the SIB4 and a CGI list of the CSG cell in the same frequency, and extract the inter-frequency of the CSG cell in the SIB5. a CGI list of the neighboring cell; wherein the CGI list of the CSG cell and the CGI list of the CSG cell together form a CGI list of the CSG cell;

The CGI information included in the neighbor CGI list of the CSG cell includes: a cell PLMN ID and a CELL ID.
The device according to any one of claims 5 to 7, wherein the measurement evaluation condition is: the physical cell frequency point is an inter-frequency frequency point of the macro cell, or the physical cell frequency point is the macro cell The same frequency point, and the signal quality of the physical cell is higher than the signal quality of the macro cell.
A computer storage medium having stored therein computer executable instructions for performing the method of CSG cell reselection according to any one of claims 1 to 4.