WO2010102499A1

WO2010102499A1 - Reporting method of the measurement report and cell switch method

Info

Publication number: WO2010102499A1
Application number: PCT/CN2009/075849
Authority: WO
Inventors: 施小娟; 黄亚达; 陈中明; 杜忠达
Original assignee: 中兴通讯股份有限公司
Priority date: 2009-03-13
Filing date: 2009-12-22
Publication date: 2010-09-16
Also published as: CN101835213A; CN101835213B

Abstract

A reporting method of the measurement report is provided by the present invention, the method includes: when a user equipment (UE) reports the measurement report, if the identifier information of the closed subscriber group (CSG) cell is obtained, the identifier information of the CSG cell is reported to the network side in the measurement report. A cell switch method is also provided by the present invention. By using the present invention, the information of home NBs can be obtained by the base station, and the switch judgement is made by the network side according to the measurement report reported by the UE, the UE is switched to the appropriate CSG cell, that the UE is switched between the Node B and the home NB and between the home NBs is realized.

Description

Method for measuring and reporting method and cell switching method

The present invention relates to a handover technique in a mobile communication system, and in particular to a report reporting method and a cell handover method. Background technique

In the construction of wireless network systems, indoor coverage has become the top priority of network construction. A reasonable indoor coverage solution can make the network system play its role to the greatest extent and create greater value for operators. It can also greatly save operators' network construction costs and truly achieve low investment and high returns. Thus, a wireless access device called a home base station (Home NB or eNB) emerges. The home base station is deployed as a private resource for private users in private places such as homes, groups, companies, or schools. It can provide users with various high-speed wireless access services and offer preferential tariffs, while making up for existing distributed cellular wireless. Communication system coverage is insufficient.

Currently, home base stations mainly have three access modes: open mode, closed mode, and mixed mode. The open mode home base station allows all users to access. The closed-mode home base station only allows authorized users to access, such as family members or group members. The authorized user group is called the Closed Subscriber Group (CSG), and the authorization information is stored in the user equipment ( The User Equipment, UE) user is identified in the Universal Subscriber Identity Module (USIM). The hybrid mode home base station allows all users to access, but users belonging to the CSG enjoy preferential or preferential conditions. A cell covered by a macro base station (NodeB or eNodeB) is called a macro cell, and a cell covered by a home base station is called a CSG cell with respect to a macro cell. The UE can determine whether a CSG cell allows access by the access mode of the home base station to which the CSG cell belongs and the authorization information stored in the USIM. The home base station can use the frequency resource reserved by the operator for the home base station, which is called a dedicated carrier of the CSG, or the same frequency resource as the macro base station, which is called a mixed carrier, and the inter-cell of the same frequency. The physical cell identity (PCI) is used. When the home base station and the macro base station use the same frequency, the operator reserves PCI resources for the home base station. The CSG cell uses only PCI in the PCI split. The CSG cell has a PCI, a Cell Global Identifier (CGI) and a Non-Public Authorized User Group Identifier (CSG ID). Due to the limited physical layer identification, with the massive deployment of the home base station, PCI cannot uniquely characterize one CSG cell, and one CSG ID can also identify multiple CSG cells. Only CGI is unique within the PLMN (Public Land Mobile Telephone Network). The UE and the macro base station can uniquely determine a CSG cell only if the CGI is acquired.

In the mobile communication system, in order to ensure the quality of the service and give the user a good service experience, after the UE establishes a connection with the network in a certain cell, the UE still needs to measure the signal quality of its neighboring cell, and select a suitable cell to perform handover. To meet mobility requirements. Taking the Evolved Universal Terrestrial Radio Access Network (EUTRAN) as an example, the specific process of measurement in the connected state is: The network side sends a measurement control message to the UE, where the measurement control message includes the measurement object. (measurement object, MO ), the MO may be a group or a group of frequencies or a group of frequencies on the frequency; measuring 4 report configuration (RC), RC configuration measurement report attributes, for example, the measurement report is an event report Or the configuration of the cycle and the corresponding configuration; measurement ID (MID), MID is the identification of each specific measurement task, MID is associated with a MO and an RC, so that a single measurement task is uniquely represented;

In addition, there is a measurement threshold (s-Measure), which represents the signal quality threshold of the resident cell; a quantity configuration, which is used to indicate a specific measurement quantity; a measurement gap configuration, for the inter-frequency, Configuration of different system measurements, etc. UE pass The number of MIDs can be known by the number of MIDs. The attributes of the measurement tasks are obtained by the MO and RC corresponding to the MID. For example, how should it be measured, how should it be reported, and so on.

The triggering of the measurement report is divided into two types: event triggering and periodic triggering. The event triggering means that the measurement is triggered after the measurement quantity of the measurement object (the measurement object has already corresponded to the cell) meets the event condition, for example, the neighboring cell. An event is triggered when the wireless signal measurement is larger than the resident cell by 3 db. It can be reported only once during the reporting, or multiple times at a fixed interval. The measurement report is triggered periodically, and the event threshold is not required to be met. As long as the UE can obtain the measurement quantity of the measurement object, the report can be reported, and the report interval interval (reportlnterval) is satisfied between each report. If there are multiple measurement objects in the measurement report that need to be reported, when reporting, the measurement objects are arranged in the order of strong to weak signals, and the cell with the highest signal strength is called the best cell. Currently, for the measurement report serving the mobility purpose, the UE only needs to report the PCI and the measurement quantity of the macro cell, and the macro base station can make a handover decision according to the measured quantity reported by the UE and the known macro neighbor configuration information.

With the massive deployment of the home base station, the UE is required to switch between the macro cell and the CSG cell, or between the CSG cell and the CSG cell to meet the mobility requirement. At the same time, since the home base station is portable as a plug-and-play user equipment, when the home base station and the macro base station use the same frequency, the interference problem between the home base station and the macro base station, and the interference problem between the home base stations are also mobile. One of the important factors to consider for performance, for example, for a specific UE, there is a CSG cell and a macro cell that are not allowed to access the UE on a mixed frequency. If the UE is switched to the macro cell, the UE is bound to Due to strong interference from the CSG cell, the network should not switch the UE to the macro cell when making handover decisions.

Due to the large number of home base stations, the plug-and-play mode of operation is mobile, so no neighbor relationship is configured between the macro cell and the CSG cell. That is, the macro cell has no CSG cell information, and the macro base station can Whether the frequency resource is a CSG-dedicated frequency resource or whether the PCI belongs to the PCI split determines whether a cell is outside the CSG cell, and cannot obtain other information of the home base station, and the home base station has three access modes, and the macro base station cannot know the family. Whether the base station allows access to a specific UE, and the existing measurement reporting mechanism obviously cannot provide information needed to switch to the CSG cell and avoid interference between the home base station and the macro base station, the home base station and the home base station. Summary of the invention

The technical problem to be solved by the present invention is to provide a reporting method for reporting reports, which solves the problem that any base station in the prior art cannot obtain the information of the home base station.

In order to solve the above technical problem, the method for reporting the measurement report of the present invention includes: when the UE reports the measurement report, if the identification information of the CSG cell has been obtained, the identification information of the CSG cell is sent to the measurement report. Network side.

Further, if the UE does not obtain the identification information of the CSG cell, the UE will

The PCI and measurement of the CSG cell are given to the network side.

Further, the UE also carries the PCI and the measured quantity of the CSG cell in the measurement. Further, the UE also carries, in the measurement report, information about whether the CSG cell allows the UE to access.

Further, the identification information of the CSG cell includes one or more of CGI, Tracking Area Code (TAC), PLMN information, access mode, and non-public authorized user group identity for the EUTRAN CSG cell; for the global terrestrial radio access network (UTRAN) The CSG cell includes one or more of CGI, Location Area Code (LAC), Routing Area Code (RAC), PLMN Information, Access Mode, and Non-Public User Group Identity.

Further, when the UE does not obtain the identification information of the CSG cell, the measurement 4 also carries the information that the UE does not obtain the identification information of the CSG cell.

Further, if the UE obtains the identification information of the CSG cell, and the CSG cell does not allow the UE to access, the UE reports the PCI and the measurement quantity of the CSG cell to the network side in the measurement report.

Further, if the UE acquires the identification information of the CSG cell working on the dedicated frequency, When the CSG cell is the best cell working on the dedicated frequency and the UE is not allowed to access, the measurement report is not reported to the network side.

The method for reporting the measurement report of the present invention includes: when the UE performs the measurement, only when the identification information of the CSG cell working on the dedicated frequency is acquired, the measurement report is reported to the network side.

Further, the CSG cell is a CSG cell that allows the UE to access.

A cell handover method of the present invention includes:

The serving base station of the UE triggers the UE to perform measurement;

The UE detects the CSG cell in the process of performing measurement, and if the UE has obtained the identification information of the detected CSG cell, after determining whether the CSG cell allows the UE to access, the UE identifies the CSG cell identification information in the measurement report. Whether the information that the UE is allowed to access is reported to the serving base station; the serving base station selects the to-be-switched cell of the UE according to the identification information of the CSG cell and the information of whether the UE is allowed to access or selects not to switch.

Further, the UE reports the PCI and the measured quantity of the CSG cell to the serving base station in the measurement report.

The PCI and the measured quantity of the CSG cell are reported to the serving base station;

The serving base station selects the cell to be switched according to the PCI and the measurement amount of the CSG cell or selects not to switch.

Further, if the CSG cell works on the hybrid frequency, the UE also reports to the monthly service base station on the PCI and the measurement quantity of the macro cell working at the same frequency as the CSG cell in the measurement report.

If the serving base station determines that the signal strength of the CSG cell is stronger than the macro cell and the CSG cell allows access according to the PCI and the measurement quantity carried in the measurement report, the serving base station switches the UE to the CSG cell according to the identification information of the CSG cell.

Further, if the CSG cell that the UE obtains the identification information does not allow the UE to access, and detects the CSG cell that does not obtain the identification information, the serving base station determines that the UE is not interfered. In the case of a decision to continue to reside in the current serving cell;

If the CSG cell that the UE obtains the identification information includes the CSG cell that allows the UE to access and does not allow the UE to access, when the signal strength of the CSG cell that the UE is allowed to access is stronger than the CSG cell that does not allow the UE to access, The serving base station makes a decision to switch to a CSG cell that allows the UE to access.

Further, if the CSG cell that the UE acquires the identification information does not allow the UE to access, and the signal strength of the macro cell working on the same frequency as the CSG cell is weaker than the CSG cell, the serving base station continues to reside in the The judgment of the current serving cell;

If the UE does not obtain the identification information of the CSG cell, and the signal strength of the CSG cell is stronger than the macro cell working on the same frequency as the CSG cell, the serving base station makes a decision to continue to camp on the current serving cell.

In summary, the present invention reports the identification information, the PCI and the measurement quantity of the CSG cell acquired by the UE to the network side in the measurement report, so that the network side can make a handover decision according to the measurement report reported by the UE, and The UE switches to a suitable CSG cell to implement handover between the macro base station and the home base station and between the home base station and the home base station. DRAWINGS

1 is a flow chart of a method for reporting a measurement report according to the present invention;

2 is a flow chart of an application example 1 of the present invention;

3 is a flow chart of an application example 2 of the present invention;

4 is a flow chart of an application example 3 of the present invention;

Figure 5 is a flow chart of an application example 4 of the present invention;

6 is a flow chart of an application example 5 of the present invention;

Figure 7 is a flow chart of an application example 6 of the present invention. detailed description

The specific implementation method of the present invention will be described below with reference to the accompanying drawings.

As shown in FIG. 1, the reporting method of the measurement report of the present invention includes the following steps:

Step 101: The network side sends a measurement task, and the UE performs measurement and detects that a CSG cell satisfies the measurement report triggering condition;

Step 102: The UE determines whether the identification information of the CSG cell that meets the trigger condition of the measurement report is obtained. If the identification information of the CSG cell is obtained, step 103 is performed; otherwise, step 106 is performed;

The UE may obtain the identification information of the CSG cell from the system message broadcasted by the CSG cell, and the CSG cell is missed because the wireless environment is bad or the UE has no idle time to acquire the system message of the CSG cell, or the UE obtains the system message of the CSG cell. For the reason of the broadcast system message, etc., the UE may not obtain the identification information of the CSG cell from the system message of the CSG cell until the measurement report is reported.

Step 103: The UE determines, according to the authorization information saved in the USIM and the identifier information of the acquired CSG cell, whether the CSG cell allows access, and if it is allowed to access, the step 104 is performed; otherwise, step 105 is performed;

Step 104: The UE reports the CSG cell to the network side by using the measurement report, and includes the PCI, the measurement quantity, and the CSG cell identity information of the CSG cell in the measurement report, and notifies the network side CSG cell to allow the access;

For the EUTRAN CSG cell, the identification information includes: one or more of CGI, TAC (Tracking Area Code), PLMN information, access mode, and CSG ID. For the UTRAN CSG cell, the identification information includes: CGI One or more of LAC (Location Area Code), RAC (Routing Area Code), PLMN information, access mode, and CSG ID.

Step 105: The UE reports the CSG cell to the network side by using the measurement report, and may be in the measurement report. The information of the CSG cell is not reported, and the identification information of the CSG cell is not reported, and the CSG cell of the network side is not allowed to access the network.

Of course, the UE may also include the CSG cell identification information in the measurement report to serve other functions of the network. For example, when the network side performs interference control, the UE finds the CSG cell according to the identification information of the CSG cell, and adjusts the cell parameters.

If the CSG cell is working on the dedicated frequency and the CSG cell is the best cell in the CSG cell that the UE has obtained the identification information on the dedicated frequency and the UE is not allowed to access, the UE does not report the measurement report.

When the UE performs the measurement, the measurement report is reported to the network side only when the identification information of the CSG cell working on the dedicated frequency is obtained. The CSG cell is a CSG cell that allows the UE to access.

Step 106: The UE determines whether it is necessary to obtain the identification information of the CSG cell, if necessary, step 107 is performed; otherwise, step 108 is performed;

For a particular UE, the number of CSG cells that it is allowed to access is usually limited. Therefore, the UE can locally store information of the CSG cells it has accessed, called footprint information. When a CSG cell meets the conditions and needs to be reported, but the CSG cell identification information is not obtained when the measurement report is reported, the UE may determine whether it is necessary to continue to obtain the CSG cell identity information according to the footprint information.

If the CSG cell is operating at a dedicated frequency, when multiple CSG cells satisfy the measurement report triggering condition, if the UE does not obtain the identification information of any CSG cell, the UE does not report the measurement report temporarily, and the UE acquires at least one When the identification information of the CSG cell is reported, the measurement report is reported.

Step 107: The UE reports the CSG cell, and includes the PCI and the measurement quantity of the CSG cell in the measurement report, and may also notify the network side UE to report the measurement report again after obtaining the identification information of the CSG cell. For a CSG cell that does not need to obtain the identification information, it indicates that the UE has accessed the CSG cell, and needs to further obtain its identification information to determine whether the UE is still allowed to access, because the CSG cell may be related to the serving cell and Other cells of the same frequency cause interference, so they need to be reported.

Step 108: The UE reports the CSG cell, and includes a PCI and a measurement quantity of the CSG cell in the measurement report.

For a CSG cell that does not need to obtain the identification information, it does not need to consider whether it allows the UE to access, that is, it does not acquire its identification information later, but it may also interfere with the serving cell and other cells of the same frequency. Therefore, it needs to be reported.

The network side may make a handover decision according to the measurement report reported by the UE.

The above method will be described below by using an application example.

Among them, for the application examples 1, 2 and 3, the following method is used in the measurement report to represent the neighbor information:

If the identification information is not obtained, the access is allowed to be: The UE does not obtain the identification information, but needs to obtain the identification information, and the subsequent acquisition of the identification information needs to be reported again by the CSG cell reported by the measurement report, or represents the macro cell, and the network can be based on the PCI split. The information judgment is specifically a CSG cell or a macro cell.

No identification information is obtained, and access is not allowed: indicates that the UE does not obtain the identification information, and does not need to obtain the CSG cell of the identification information.

The identification information has been obtained, allowing access: indicates that the CSG cell has obtained the identification information and allows the UE to access.

The identification information has been obtained, and access is not allowed: indicates that the CSG cell that has obtained the identification information and does not allow the UE to access.

In the measurement report, one bit can be used to identify whether the above information has been obtained and whether access is permitted. For the application examples 4, 5, and 6, the following method is used to indicate the neighboring cell information in the measurement report: the access is allowed, but the identification information is not reported in the measurement report: the CSG cell indicating that the UE does not obtain the identification information, or the macro cell, The network may determine, according to the PCI split information, whether it is a CSG cell or a macro cell.

The access is allowed, and the identification information is reported in the measurement report: the CSG cell indicating that the identification information has been obtained and the UE is allowed to access.

Do not allow access: Indicates that the CSG cell that has obtained the identification information and does not allow the UE to access.

In the measurement report, one bit can be used to identify whether the information is allowed to be accessed, and the network side can further know the type of the CSG cell by further including the identification information in the measurement report.

In addition to the measurement tasks described therein, the serving base station can also configure other measurement tasks for the UE at the same time. The execution of these other measurement tasks is not affected by the measurement tasks described in the application example.

Application example 1

The serving base station configures an intra-frequency measurement task for the UE. The UE detects that a CSG neighbor and a macro neighbor meet the measurement report triggering condition. The signal of the CSG neighbor is stronger than the macro neighbor, and the UE has acquired the CSG neighbor. The identification information of the area, as shown in FIG. 2, the specific steps of the UE reporting the measurement report and the serving base station performing the handover decision are:

Step 201: The UE determines, according to the authorization information saved in the USIM and the identifier information of the CSG neighboring area, that the CSG neighboring area allows the access, and reports the measurement report to the serving base station, where the measurement report includes the information of the CSG neighboring area and the macro neighboring area. The CSG neighboring area and the macro neighboring area are arranged in a strong to weak order, that is, the CSG neighboring area is in front and the macro neighboring area is in the back;

The contents of the measurement report are as follows:

CSG neighbor: has obtained identification information, allows access; PCI; measurement; identification information; macro neighbor: no identification information, access allowed; PCI; Step 202: The serving base station determines, according to the PCI split information, that the UE reports a CSG neighboring area and a macro neighboring area that are allowed to access in the measurement report, and determines that the signal strength of the CSG neighboring area is strong according to the PCI and the measured quantity carried in the measurement report. In the macro neighboring area, a handover decision is made to switch to the CSG neighboring cell, and the handover is completed according to the identification information of the CSG neighboring cell.

Application example 2

The serving base station configures an intra-frequency measurement task for the UE, and the UE detects that two CSG neighboring cells (CSG cell 1 and CSG cell 2) satisfy the measurement report triggering condition, wherein the signal of the CSG cell 1 is stronger than the CSG cell 2, and the UE The identification information of the CSG cell 2 is obtained, and the identification information of the CSG cell 1 is not obtained, but the identification information of the CSG cell 1 needs to be obtained. As shown in FIG. 3, the specific procedure for the UE to report the measurement report and the serving base station to perform the handover decision is :

Step 301: The UE determines, according to the authorization information stored in the USIM and the identifier information of the CSG cell 2, that the CSG cell 2 does not allow access to the CSG, and reports the measurement report to the serving base station, where the measurement report includes the information of the CSG cell 1 and the CSG cell 2. CSG cell 1 and CSG cell 2 are arranged in order of strong to weak signal, that is, CSG cell 1 is in the front and CSG cell 2 is in the back;

The contents of the measurement 4 are as follows:

CSG cell 1 : No identification information, access allowed; PCI; measurement;

CSG cell 2: The identification information has been obtained, access is not allowed; PCI; measurement volume; identification information.

Step 302: The serving base station determines, according to the PCI split information, that the UE reports, in the measurement report, a CSG neighboring area that has not obtained the identification information and a CSG neighboring area that is not allowed to access, and determines two CSG neighboring areas that are reported by the UE to the UE. If it does not constitute a strong interference, make a decision to continue to reside in the current serving cell;

Step 303: After obtaining the identification information of the CSG cell 1, and determining that the CSG cell 1 allows the access, the UE reports the measurement report to the serving base station according to the authorization information stored in the USIM and the identification information of the CSG cell 1, and the measurement report is reported in the measurement report. Contains information about CSG cell 1 and CSG cell 2, CSG cell 1 and CSG cell 2 are arranged in order of strong to weak signal, that is, CSG cell 1 is in the front and CSG cell 2 is in the back;

The contents of the measurement report are as follows:

CSG cell 1: has obtained identification information, allows access; PCI; measurement; identification information; CSG cell 2: has obtained identification information, does not allow access; PCI;

Step 304: The serving base station determines, according to the PCI split information, that the UE reports a CSG neighboring area that is allowed to access and a CSG neighboring area that is not allowed to access in the measurement report, and the information strength of the CSG neighboring area that is allowed to access is stronger than that. The CSG neighbor that is allowed to access, makes a handover decision to switch to the CSG neighbor that is allowed to access.

Application example 3

The serving base station configures an inter-frequency measurement task for the UE. The UE measures a CSG neighboring area and a macro neighboring area to meet the measurement report triggering condition. The signal of the CSG neighboring area is stronger than the macro neighboring area, and the UE has not yet The identification information of the CSG neighboring area is not required to obtain the identification information of the CSG neighboring area. As shown in FIG. 4, the specific steps of the UE reporting the measurement report and the serving base station performing the handover decision are:

Step 401: The UE reports the measurement report to the serving base station, and includes the information of the CSG neighboring area and the macro neighboring area in the measurement report, and arranges the CSG neighboring area and the macro neighboring area according to the signal from strong to weak, that is, the CSG neighboring area is in front, and the macro The neighboring area is behind;

The contents of the measurement report are as follows:

CSG neighbor: No identification information, no access allowed; PCI; measurement;

Macro neighbor: No identification information, access allowed; PCI; measurement.

Step 402: The serving base station determines, according to the PCI split information, that the UE reports a CSG neighboring area and a macro neighboring area in the measurement report, and the UE does not acquire the identification information of the CSG neighboring area. Therefore, the serving base station makes the following handover decision: Switching to the CSG neighboring cell, at the same time, the serving base station judges that if the UE is switched to the macro neighboring cell, it is bound to be interfered by the CSG neighboring cell, and therefore cannot be switched. To the macro neighboring area, if there are inter-frequency neighboring cells suitable for UE handover in the measurement results reported by other measurement tasks, the serving base station switches the UE to the inter-frequency neighboring cell.

Application example 4

The serving base station configures an inter-frequency measurement task for the UE. The UE detects that a CSG neighboring area and a macro neighboring area meet the measurement report triggering condition. The signal of the CSG neighboring area is stronger than the macro neighboring area, and the UE has Obtaining the identification information of the CSG neighboring area, as shown in FIG. 5, the specific steps of the UE reporting the measurement report and the serving base station performing the handover decision are:

Step 501: The UE determines, according to the authorization information saved in the USIM and the identifier information of the CSG neighboring area, that the CSG neighboring area allows the access, and reports the measurement report to the serving base station, where the measurement report includes the information of the CSG neighboring area and the macro neighboring area. The CSG neighboring area and the macro neighboring area are arranged in a strong to weak order, that is, the CSG neighboring area is in front and the macro neighboring area is in the back;

The contents of the measurement report are as follows:

CSG neighbor: Allow access; PCI; Measurement; Cell identification information;

Macro neighbor: Allow access; PCI; Measurement.

Step 502: The serving base station determines, according to the PCI split information, that the UE reports a CSG neighboring area and a macro neighboring area that are allowed to access in the measurement report, and the signal strength of the CSG neighboring area is stronger than the macro neighboring area, and the handover is made to the CSG neighboring area. The handover decision of the zone is completed, and the handover is completed according to the identification information of the CSG neighboring cell.

Application example 5

The serving base station configures the UE with a measurement task for a certain frequency of the different system, and the frequency is a dedicated frequency of the CSG. The UE detects that the two CSG neighboring cells (the CSG cell A and the CSG cell B) meet the measurement report triggering condition, where the signal of the CSG cell A is stronger than the CSG cell B, and the UE has not obtained the identification information of the two CSG cells. The CSG cell A needs to obtain the identification information. As shown in FIG. 6, the specific steps of the UE reporting the measurement report and the serving base station performing the handover decision are:

Step 601: The UE has not obtained the identification information of any CSG cell, so it is not reported yet. Volume report

Step 602: The UE obtains the identification information of the CSG cell B, and determines that the CSG cell B does not report the measurement report when the CSG cell B is not allowed to access according to the 4 authorized information stored in the USIM and the identification information of the CSG cell B.

Step 603: The UE obtains the identification information of the CSG cell A, according to the saved in the USIM.

4 The authorized information and the identification information of the CSG cell A determine that the CSG cell A allows access, and the signal of the CSG cell A is always stronger than the CSG cell B, and the measurement report is reported, and the CSG cell A and the CSG cell B are included in the measurement report. Information, CSG cell A and CSG cell B are arranged in order of strong to weak, that is, CSG cell A is in the front and CSG cell B is in the back;

The contents of the measurement 4 are as follows:

CSG cell A: Allow access; PCI; Measurement, cell identification information;

CSG cell B: No access allowed; PCI; measurement.

Step 604: The serving base station determines, according to the PCI split information, that the UE reports a CSG neighboring area that is allowed to access and a CSG neighboring area that is not allowed to access in the measurement report, and the information strength of the CSG neighboring area that is allowed to access is stronger than that. The CSG neighbor that is allowed to access, makes a handover decision to switch to the CSG neighbor that is allowed to access.

Application example 6

The serving base station configures the UE with a measurement task for a certain frequency of the different system, and the frequency is a mixed frequency. The UE detects that a CSG neighboring cell and a macro neighboring cell satisfy the measurement report triggering condition, wherein the signal of the CSG neighboring cell is stronger than the macro neighboring cell, and the UE has obtained the identification information of the CSG neighboring cell, as shown in FIG. The specific steps of reporting the measurement report and the serving base station performing the handover decision are: Step 701: The UE determines that the CSG neighboring area does not allow access to the CSG neighboring area according to the authorization information stored in the USIM and the identification information of the CSG neighboring area, and reports the measurement report to the serving base station. The measurement report includes information about the CSG neighboring area and the macro neighboring area, and the CSG neighboring area and the macro neighboring area are arranged in order from strong to weak, that is, the CSG neighboring area is in front and the macro neighboring area is in the back; The contents of the measurement report are as follows:

CSG neighbor: not allowed access; PCI; measurement;

Macro neighbor: Allow access; PCI; Measurement.

Step 702: The serving base station determines, according to the PCI split information, that the UE reports a CSG neighboring area and a macro neighboring area that are not allowed to access in the measurement report, and the signal of the CSG neighboring area is stronger than the macro neighboring area, if the UE is switched to the macro. The neighboring cell is bound to be interfered by the CSG neighboring cell. If there are no neighboring cells suitable for UE handover in the measurement results reported by other measurement tasks, the serving base station makes a decision to continue to camp on the current serving cell.

The above is only the preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes can be made to the present invention. Any modifications, equivalent substitutions, improvements, etc. within the spirit and scope of the invention are intended to be included within the scope of the invention.

Claims

Claim

A method for reporting a measurement report, comprising: when the user equipment UE reports the measurement report, if the identification information of the non-public authorized user group CSG cell has been obtained, the measurement information is The identification information of the CSG cell is sent to the network side.

2. The method according to claim 1, wherein the method further comprises: if the UE does not obtain the identification information of the CSG cell, the physics of the CSG cell in the measurement report The layer identifies the PCI and the measured quantity is reported to the network side.

3. The method according to claim 1, wherein the UE further carries a PCI and a measurement quantity of the CSG cell in the measurement report.

The method according to claim 3, wherein the UE further carries information about whether the CSG cell allows access by the UE in the measurement report.

The method according to claim 1, wherein the identification information of the CSG cell for the evolved global terrestrial radio access network CSG cell comprises: a global cell identifier CGI, a tracking area code TAC, and a public land mobile telephone network. One or more of PLMN information, access mode, and non-public authorized user group identity;

For a global terrestrial radio access network, the UTRAN CSG cell includes one or more of: CGI, Location Area Code LAC, Routing Area Code RAC, PLMN Information, Access Mode, and Non-Public User Group Identity.

The method according to claim 2, wherein the measurement report further carries information that the UE does not obtain the identification information of the CSG cell.

The method according to claim 1, wherein the method further comprises: if the UE acquires the identification information of the CSG cell, and the CSG cell does not allow the UE to access, the UE is measuring The PCI and measurement of the CSG cell are reported to the network side.

The method according to claim 1, wherein the method further comprises: if the UE acquires identification information of a CSG cell operating on a dedicated frequency, when the CSG cell is When the best cell on the dedicated frequency is working and the UE is not allowed to access, the measurement report is not reported to the network side.

9. A method for measuring a report, wherein the method includes: when the UE performs measurement, only when the identification information of the CSG cell working on the dedicated frequency is acquired, the measurement report is reported to the network side.

10. The method according to claim 9, wherein the CSG cell is a CSG cell that allows the UE to access.

A cell switching method, comprising:

The serving base station of the UE triggers the UE to perform measurement;

The UE detects a CSG cell in the process of performing measurement, and if the UE has obtained the identification information of the detected CSG cell, after determining whether the CSG cell allows the UE to access, the measurement report is And uploading, to the serving base station, the identifier information of the CSG cell and the information about whether the UE is allowed to access;

The serving base station selects a cell to be switched of the UE or selects not to switch according to the identification information of the CSG cell and the information of whether the UE is allowed to access.

The method according to claim 11, wherein the UE reports the PCI and the measured quantity of the CSG cell to the serving base station in the measurement report.

The method according to claim 12, wherein the method further comprises: if the UE does not obtain the identification information of the CSG cell, the CSG cell is used in the measurement 4 report The PCI and the measured quantity are reported to the serving base station;

The serving base station selects a cell to be switched according to the PCI and the measured quantity of the CSG cell or selects not to switch.

The method according to claim 12, wherein the method further comprises: if the CSG cell works on a hybrid frequency, the UE is still in the measurement 4 report and the CSG cell The PCI and the measured quantity of the macro cell working at the same frequency are reported to the service Base station

The serving base station determines, according to the PCI and the measurement quantity carried in the measurement report, that the signal strength of the CSG cell is stronger than the macro cell and the CSG cell allows access, according to the identification information of the CSG cell. And switching the UE into the CSG cell.

The method according to claim 13, wherein the method further comprises: if the CSG cell that the UE acquires the identification information does not allow the UE to access, and detects that the CSG cell that does not obtain the identification information And the serving base station makes a decision to continue to camp on the current serving cell if it is determined that the UE is not interfered with;

If the CSG cell that the UE obtains the identification information includes the CSG cell that allows the UE to access and does not allow the UE to access, the signal strength of the CSG cell that allows the UE to access is stronger than the UE is not allowed to connect. When the CSG cell enters, the serving base station makes a handover to a decision in the CSG cell that allows the UE to access.

The method according to claim 13, wherein the method further comprises: if the CSG cell that the UE acquires the identification information does not allow the UE to access, and operates on the same frequency as the CSG cell When the signal strength of the macro cell is weaker than the CSG cell, the serving base station makes a decision to continue to camp on the current serving cell;

If the UE does not obtain the identification information of the CSG cell, and the signal strength of the CSG cell is stronger than the macro cell working on the same frequency as the CSG cell, the serving base station continues to camp on the current serving cell. Judgment.