WO2010017770A1

WO2010017770A1 - Method for establishing neighbor relation

Info

Publication number: WO2010017770A1
Application number: PCT/CN2009/073218
Authority: WO
Inventors: 秦飞; 王彦
Original assignee: 大唐移动通信设备有限公司
Priority date: 2008-08-12
Filing date: 2009-08-12
Publication date: 2010-02-18
Also published as: CN101651874A; CN101651874B

Abstract

A method for establishing neighbor relation is provided, which includes: a base station receives the Physical Cell IDs (Phy-CIDs) of the neighbor cells with the strongest pilot signals, which are reported respectively by the user equipments (UEs) of the current cell, and determines the Phy-CIDs of the neighbor cells which have not established the neighbor relation with the current cell among those Phy-CIDs received (202); the base station selects one UE among all the UEs which report the Phy-CIDs, and instructs the UE to read the cell information of the neighbor cell (203); the base station receives the information reported by the UE; the neighbor relation corresponding to each operator which is supported by the current cell is established according to the cell information of the current cell and the information reported by the UE (205). By introducing the Public Land Mobile Network Identity (PLMN-ID) for identifying the operator into the neighbor relation, the present invention establishes the corresponding relation between the cell ID and the operators supported by the base station, thereby the neighbor relation corresponding to each of the different operators of the same base station can be distinguished, and therefore, the establishment of Automatic Neighbor Relation (ANR) can be implemented when the base station is shared by plurality of operators.

Description

Method for establishing neighbor relationship

TECHNICAL FIELD The present invention relates to mobile communication technologies, and in particular, to a method for establishing a neighbor relationship. BACKGROUND OF THE INVENTION Currently, with the maturity and commercialization of the third generation mobile communication (3G) technology, in order to enable the third generation mobile communication technology to continue the technical update, it is guaranteed to have considerable competitiveness in a longer period of time, thereby extending The commercial application cycle of the third generation mobile communication technology, 3GPP is studying a new Long Term Evolution (LTE) system to meet the application requirements of mobile communication in the future.

In the current LTE system, the Self Organization Network (SON) is proposed. An important function and use of SON is to realize the establishment of Automatic Neighbor Relationship (ANR). The User Equipment (UE) interacts with the Operation & Management (O&M) to automatically identify and establish neighbor relationships and perform continuous optimization and maintenance. In order to implement ANR, the Neighbor Relationship Table (NRT) is defined in the current 3GPP protocol. The sample format is shown in Table 1:

Table 1

Each row in Table 1 represents a neighbor relationship. According to Table 1, the cell ID is 1 The area (ie CI#1) has three neighboring relationships (ie, the three lines corresponding to the labels 1, 2, and 3 of the NR column), which respectively indicate:

The cell identifier of the local cell is 1, and the cell identifier of the neighboring cell is 2 (ie, CI#2); the cell identifier of the local cell is 1, and the cell identifier of the neighboring cell is 3 (ie, CI#3); 1. The cell ID of the neighboring cell is 4 (ie CI#4). It can be seen that in the NRT shown in Table 1, there are three neighboring cells in the cell, which are three cells with cell identifications of 2, 3 and 4. At the same time, in Table 1, corresponding to each neighbor relationship, the NRT defined in the current protocol also sets three attributes of the neighbor relationship, which are controlled by and only by 0 & M (the value of the attribute in the table is blank) Indicates that it is set by O&M. To reduce the workload of 0 or M, the base station can usually set the attribute to a fixed initial value (usually called the default value), but cannot set the attribute to be the initial one. Other than the value, the base station is further capable of performing the modification of the three attributes according to the control instruction of the O&M, the three attributes including:

1) No Remove: When the attribute is valid, it indicates that the base station cannot delete the neighbor relationship; 2) No HO: When the attribute is valid, it indicates that the neighboring area in the neighbor relationship cannot be used as the candidate for handover by the base station;

3) No X2: The attributes are all in pairs. When the attribute is valid, it indicates that the X2 connection cannot be established between the two base stations in the neighboring cell relationship and the neighboring cell. At present, the concept established by ANR has been accepted by the existing standards of 3GPP, and the implementation process of ANR establishment is specified in the existing standards, as shown in Figure 1, including:

Step 101: The base station creates a corresponding NRT according to the neighbor relationship of the initial configuration of the O&M. Step 102: The base station instructs the UE to measure the pilot signal of the neighboring area received by the UE, and the UE transmits the pilot signal to the Phy- of the neighboring area of a certain strength. The CID is reported to the local base station; Step 103: If the neighboring area corresponding to the Phy-CID of the upper layer is not in the current neighboring cell list of the current base station, the base station selects one UE in the local cell, and indicates the UE to acquire by using RRC signaling. Relevant cell information of the neighboring cell; The UE selected by the base station in step 103 may be the same UE as the UE that measures the pilot signal strength in step 102, or may be a different UE, and the specific situation is determined according to the measurement location where each UE is located; Step 104: UE The related cell information of the neighboring cell is reported to the local base station, and the base station further reports the received related cell information to the O&M, and performs necessary updating on the NRT according to the control instruction fed back by the O&M. It can be seen that, according to the foregoing procedure, the base station can implement the NRT and modify the value of each neighbor relationship attribute by interacting with the 0.

However, the above process is only applicable to the process of NRT establishment when a single operator separately occupies all network resources. In an LTE system, a base station is supported by multiple operators. Therefore, in actual networking applications, in order to save costs and improve network resource utilization efficiency, one base station may be shared by multiple operators at the same time. Obviously, since different operators may have different management policies and attribute configuration requirements for neighboring cell relationships, in the case where multiple operators share base station devices, the process of establishing the ANR must satisfy the use of the base station. Each operator has different requirements for the relationship between neighboring parties.

However, according to the implementation procedure of the ANR established in the existing standard shown in FIG. 1, it is easy to find that the existing standard does not clarify the technical solution for establishing the ANR in the case where the multi-operator shares the base station equipment. If the prior art processing procedure is adopted, according to the NRT structure shown in Table 1, which includes only the local cell and the neighboring cell, the established NRT structure will be effective for all operators sharing the base station at the same time, and multiple operations cannot be realized at all. The differentiated neighbor relationship management configuration strategy; once the neighbor relationship is modified, the change will be effective for all operators at the same time, resulting in confusion of neighbor relationship. SUMMARY OF THE INVENTION The present invention provides a method for establishing a neighbor relationship, which can implement ANR establishment when a multi-operator shares a base station.

In order to achieve the above object, the technical solution of the present invention is specifically implemented as follows:

A method for establishing a neighbor relationship, the method comprising: The base station receives the physical layer cell identifier Phy-CID of the neighboring cell with the strongest pilot signal reported by the user terminal UE of the local cell, and determines the Phy-CID of the neighboring cell that has not established the neighbor relationship with the local cell;

Selecting one of the UEs that report the Phy-CID, and instructing the UE to read the cell information of the neighboring cell, where the cell information includes a base station identifier, a cell identifier CI, and a carrier list supported by the base station and a tracking area code TAC;

Receiving the information reported by the UE, where the reported information includes: a part of the cell information of the neighboring cell that is different from the cell information of the current cell;

Based on the cell information of the cell and the information reported by the UE, the neighbor relationship corresponding to each operator supported by the cell is established. It can be seen from the above technical solution that the method for establishing a neighbor relationship relationship in the embodiment of the present invention establishes a cell identifier and an operator supported by the base station by introducing a public land mobile network identifier of the identifier operator in the neighbor relationship. The corresponding relationship can distinguish the neighbor relationship between different operators on the same base station, so that the automatic neighbor relationship establishment when multiple operators share the base station can be realized. Brief Description of the Drawings Fig. 1 is a schematic diagram showing the execution flow of an ANR establishment in the prior art.

FIG. 2 is a schematic flowchart diagram of a method for establishing a neighbor relationship in an embodiment of the present invention. DETAILED DESCRIPTION OF THE INVENTION The present invention will be further described in detail below with reference to the accompanying drawings.

First, the NRT structure for multi-operator shared base stations is introduced:

Table 2 shows a specific example of the NRT structure. In this example, it is assumed that the cell supports operators 1, 2 and 3, and the neighboring cells support operators 1 and 4: NR Neighborhood No Remove No HO No X2

PLMN#1 PLMN#1

1

CI#1 CI#2

PLMN#2 PLMN#1

2

CI#1 CI#2

PLMN#2 PLMN#4

3

CI#1 CI#2

PLMN#3 PLMN#1

4

CI#1 CI#2

PLMN#3 PLMN#4

5

CI#1 CI#2

Table 2

First, since a base station in the current LTE system can simultaneously support multiple operators to share, in order to distinguish each operator, a unique Public Land Mobile Network Identity (PLMN-ID) is used for each operator. For differentiation, each base station includes a list of carriers supported by the base station (ie, a list of PLMN-IDs). In the neighboring cell relationship, the PLMN is used to indicate the operator supported by the local cell and the neighboring cell in the neighboring cell relationship; in addition, the meaning of CI in the neighboring cell relationship is the same as the prior art.

According to Table 2, there are five neighboring relationships (ie, NR1 to NR5) in the cell with the cell identifier of 1 (ie, CI#1), which respectively indicate:

NR1: The cell identifier of the cell is 1, the base station supports the operator 1; the cell identifier of the neighboring cell is 2 (ie, CW2), and the neighboring cell base station supports the operator 1 (ie, PLMN#1);

NR2: The cell identifier of the cell is 1, the base station supports the operator 2; the cell of the neighboring cell The identifier is 2, and the neighboring base station supports the operator 1 (ie, PLMN#2);

NR3: The cell identifier of the cell is 1, and the base station supports the operator 2; the cell identifier of the neighboring cell is 2, and the neighboring cell site supports the operator 4.

NR4: The cell identifier of the cell is 1, and the base station supports the operator 3; the cell identifier of the neighboring cell is 2, and the neighboring cell site supports the operator 1.

NR5: The cell identifier of the cell is 1, and the base station supports the operator 3; the cell identifier of the neighboring cell is 2, and the neighboring cell site supports the operator 4.

For each of the three attributes corresponding to each neighbor relationship in Table 2, each operator can freely choose whether to set the initial value and set the initial value according to the respective operation and maintenance policies. This part has nothing to do with the present invention. It is not limited in the following embodiments of the present invention.

Summarizing the NRT shown in Table 2, it can be found that the neighbor relationship established in the embodiment of the present invention can be divided into two categories:

A. One type is the neighbor relationship between different cells of the same operator. Hereinafter, the tube is referred to as a single carrier neighbor relationship;

B. The other type is the neighbor relationship between different cells of different operators. Accordingly, the tube is referred to as a cross-operator neighbor relationship in the following.

Referring to the NRT described in Table 2, the neighbor relationship in NR1 is the neighbor relationship of the operator 1, that is, the single carrier neighbor relationship of the operator 1;

The neighbor relationship of NR2 is the neighbor relationship between operator 2 and operator 1. The neighbor relationship of NR3 is the neighbor relationship between operator 2 and operator 4, that is, NR2 and NR3 are cross-operator neighbors. District relationship

The neighbor relationship of NR4 is the neighbor relationship between operator 3 and operator 1. The neighbor relationship of NR5 is the neighbor relationship between operator 3 and operator 4, that is, NR4 and NR5 are also cross-operators. Neighborhood relationship;

In order to distinguish the above two groups of cross-operator neighbor relationships (ie, NR2 and NR3 are a group, NR4 And NR5 are a group;), NR2 and NR3 are referred to as carrier 2's cross-operator neighbor relationship, and NR4 and NR5 are referred to as operator 3's cross-operator neighbor relationship.

According to the definition of the cross-operator neighbor relationship, it is also found that:

The NR2 and NR3 described in Table 2 are all possible cross-operator neighbor relationships of the operator 2;

The NR4 and NR5 are all possible cross-operator neighbor relationships of the operator 3.

It can be seen that when the NRT is used to represent the neighbor relationship, a neighbor relationship includes not only the local cell and the neighboring cell, but also the neighbor relationship and base station support for each neighbor relationship by introducing the PLMN-ID. The correspondence between the operators provides a possibility to distinguish the neighbor relationship corresponding to different operators on the same base station.

On the basis of the foregoing NRT structure, the embodiment of the present invention provides a method for establishing a neighbor relationship, and the process thereof is shown in FIG. 2, which includes:

Step 201: Each UE in the cell measures the neighboring cell pilot signal, and reports the physical layer ID (Phy-CID) of the neighboring cell with the strongest pilot signal to the base station.

Step 202: The base station receives the Phy-CID reported by the UE, and determines a Phy-CID of the neighboring cell that has not established a neighbor relationship with the local cell;

Step 203: The base station selects one of the UEs that report the Phy-CID, and instructs the UE to read the cell information of the neighboring area corresponding to the Phy-CID.

The cell information includes: a list of operators supported by the base station corresponding to the Phy-CID corresponding to the neighboring cell (ie, a PLMN-ID list), a Tracking Area Code (TAC), and an eNodeB identity (eNodeB-ID). And CI;

It should be noted that, since there are multiple UEs in one cell, the Phy-CID of the neighboring cell with the strongest pilot signal measured by each UE may be one or more. So when each UE will After the Phy-CID of the neighboring area with the strongest pilot signal measured by itself is reported to the base station, the base station determines the Phy-CID of all neighboring areas that have not established a neighbor relationship with the local cell, and respectively corresponds to each Phy-CID. The district initiates a process of establishing a neighbor relationship, and the processes are independently performed in parallel.

At the same time, when the base station selects one of the UEs that report the Phy-CID, which UE is selected according to the measurement location where each UE is located, the specific implementation method is prior art and has nothing to do with the solution. More details.

Step 204: The UE reads the cell information of the neighboring cell according to the indication of the base station, compares the read cell information of the neighboring cell with the cell information of the local cell, and compares the cell information of the neighboring cell with the local cell. Different parts of the cell information on the base station;

Step 205: The base station establishes a neighbor relationship corresponding to each operator supported by the cell according to the cell information of the cell and the information reported by the UE. Preferably, in step 204, when the cell information supported by the base station and the TAC are the same in the cell information of the neighboring cell and the cell information of the local cell, the information reported by the UE includes: the base station of the neighboring cell The identification and the CI; according to the meanings indicated by the identifiers in the cell information, the current cell is the same as the carrier supported by the neighboring cell (ie, the PLMN-ID list is the same), and the neighboring cell and the home cell belong to the same zone (ie, TAC is the same);

The method for establishing a neighbor relationship corresponding to each operator supported by the cell includes: establishing a single operator neighbor relationship with default values of all the operators supported by the cell, and obtaining a neighbor relationship list NRT .

Further, after the NRT is obtained, the single-operator neighbor relationship list may be further reported to the operation and maintenance device O&M, 0&M to update the neighbor relationship whose value is different from the default value to obtain the final NRT and return. Give the base station, end this process.

When the 0&M receives the reported NRT for judgment, it is based on the respective operators. The operation and maintenance policy is set. In actual applications, the policies of the operators are different and varied. The specific process of determining the NRT based on the NRT reported by the base station is determined by the operator policy, and is not an actual technical solution. Therefore, no explanation is given here. Preferably, in step 204, when the cell information of the neighboring cell is the same as the PLMN-ID list in the cell information, and the TAC is different, that is, the cell is the same as the carrier supported by the neighboring cell, but the cell and the neighbor are The area base station is different in the area, and the TAC, the eNodeB-ID, and the CI are reported together to the base station;

Accordingly, step 205 at this time includes:

A single operator neighbor relationship is established for all the operators supported by the cell, and an initial NRT is obtained, and the values of the attributes in the NRT are to be determined;

The initial NRT is reported to the O&M, and the 0&M is determined according to the operation and maintenance policy of the operator's home zone boundary. According to the judgment result, the value of each attribute in the neighbor relationship is set to the final NRT and returned to the base station, and the process ends. Preferably, in step 204, when the cell information of the neighboring cell is different from the PLMN-ID list in the local cell information, and the TAC is the same, that is, the cell is different from the carrier supported by the neighboring cell, the PLMN is used. The ID list, the eNodeB-ID, and the CI are reported to the base station together;

Correspondingly:

1) If the operator supported by the cell and the neighboring cell is not completely the same, the step 205 includes: Step 2051: First, the operator that is supported by the cell and the neighboring cell is processed, and if an operator supported by the cell supports the neighbor, The area also supports the operator, and the NRT does not need to establish the cross-operator neighbor relationship of the operator. That is, if the cell and the neighboring area support an operator, the base station establishes the single carrier neighbor of the operator. District relationship. For example, as shown in Table 3 below, this small The zone supports PLMN#1, PLMN#2 and PLMN#3, and the neighboring zone supports PLMN#1, PLMN#2 and PLMN#4. First, according to step A, establish a single operator neighbor relationship of PLMN#1 and PLMN#2. :

table 3

The method for the base station to establish the single-operator neighbor relationship of the operator supported by the cell and the neighboring cell is as follows: Each operator and the base station that are supported by the cell and the neighboring cell respectively establish a single operation with default values. The business neighbor relationship, get the initial NRT.

Step 2052:

For all operators that are supported by the local cell and are not supported by the neighboring cell, the base station associates all possible inter-operator neighbor relationship of each of the operators with a single carrier neighboring cell whose default value is established. The relationship is reported together with 0;

For example, a list of neighbor relationships to be judged on the upper side is shown in Table 4 below:

To To

PLMN#3, PLMN#2, To be

4 be be

CI#1 CI#2 defined

Defined

PLMN#3 , PLMN#4 , To be To to To be

5

CI#1 CI#2 defined

Table 4

Step 2053: The O&M determines each of the possible cross-operator neighbor relationship relationships, adds the inter-operator neighbor relationship allowed by the operator to the initial NRT, and sets all cross-operators in the NRT. The value of each attribute of the neighbor relationship is also updated. The single-operator neighbor relationship of each attribute in the initial NRT is different from the default value, and the final NRT is obtained and returned to the base station, and the process ends.

For example, if the list shown in Table 4 is reported to O&M, the final result based on the judgment result may be as shown in Table 5:

table 5

2) If the cell supported by the cell and the neighboring cell are completely different, step 205 includes: after receiving the report information of the UE, the base station does not establish an NRT, and directly directly stores all possible carriers of one of the operators supported by the cell. Report O&M across inter-operator neighbourhoods, Based on all the possible cross-operator neighbor relationships, the O&M generates an NRT based on the inter-operator neighbor relationship allowed by the operator, and sets the values of all the attributes of the neighbor relationship in the NRT to obtain the final NRT. After the NRT returns to the base station, the process ends. Preferably, in step 204, when the cell information of the neighboring cell is different from the PLMN-ID list and the TAC in the local cell information, that is, the cell is different from the carrier supported by the neighboring cell and the base station of the cell and the neighboring cell The home area is also different - the PLMN-ID list, the TAC, the eNodeB-ID, and the CI are reported together to the base station;

Correspondingly,

1) If the operator supported by the cell and the neighboring cell is not completely the same, the step 205 includes: establishing a single carrier neighbor relationship for each operator and the base station supported by the cell and the neighboring cell respectively, obtaining an initial NRT, and the NRT The value of each attribute is to be determined;

For all operators that are supported by the local cell and are not supported by the neighboring cell, the base station associates all the possible cross-operator neighbor relationship of each of the operators with the established single-operator neighbor relationship of each attribute to be determined. Reported to 0;

The value of each attribute in the neighbor relationship in the initial NRT is set according to the operation and maintenance policy of the carrier's home zone boundary. The cross-operator neighbors allowed by the operator are also included in all possible cross-operator neighbor relationships. Zone relationship is added to the initial NRT and set

The values of all the attributes of the inter-operator neighbor relationship in the NRT are obtained by the final NRT and returned to the base station to end the process.

2) If the list of operators supported by the cell and the neighboring cell is completely different, the step 205 includes: directly omitting all possible cross-operator neighboring relationships of each of the operators supported by the cell to the 0&M;

</RTI></RTI></RTI></RTI></RTI></RTI></RTI></RTI></RTI> The value is obtained by the final NRT and returned to the base station to end the process.

It can be seen from the foregoing that, in the method for establishing a neighbor relationship relationship, the public land mobile network identifier of the identifier operator is introduced in the neighbor relationship, and the correspondence between the cell identifier and the operator supported by the base station is established, thereby being able to The neighbor relationship between different operators on the same base station is distinguished, so that the ANR establishment and maintenance of the neighbor relationship can be realized. At the same time, the preferred embodiment of the present invention can effectively reduce the amount of information reported to the operation and maintenance device, help reduce system resource consumption, and improve system performance.

In the meantime, it is to be understood that the above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, and any equivalent changes or substitutions made by those skilled in the art should be regarded as It is intended to be covered by the scope of the invention.

Claims

Claim

A method for establishing a neighbor relationship, the method comprising: receiving, by a base station, a physical layer cell identifier Phy-CID of a neighboring area with the strongest pilot signal reported by the user terminal UE of the local cell, and determining the The Phy-CID of the neighboring area in which the neighboring cell relationship is not established in the cell;

Based on the cell information of the cell and the information reported by the UE, the neighbor relationship corresponding to each operator supported by the cell is established.

The method according to claim 1, wherein the step of receiving the information reported by the UE after the step of instructing the UE to report the cell information of the neighboring cell is selected by any one of the UEs that report the Phy-CID. Before the steps, the method further includes:

The UE compares the read cell information of the neighboring cell with the cell information of the local cell, and sets a part of the cell information of the neighboring cell different from the cell information of the current cell to the base station.

The method according to claim 1 or 2, wherein, when the cell information supported by the base station and the TAC are the same in the cell information of the neighboring cell and the cell information of the local cell, the UE reports the same The information includes: a base station identifier and a CI of the neighboring area;

The method according to claim 3, wherein after the obtaining the NRT, The method further includes:

The single-operator neighbor relationship list is reported to the operation and maintenance device. The O&M, 0&M updates the neighbor relationship with the value different from the default value to obtain the final NRT.

Receive the final NRT returned by 0&M and end the process.

The method according to claim 1 or 2, wherein when the cell information of the neighboring cell and the cell information of the local cell are the same as the carrier list supported by the base station and the TAC is different, the UE reports The information includes: a base station identifier, a CI, and a TAC of the neighboring area;

The method for establishing a neighbor relationship corresponding to each operator supported by the cell includes: establishing a single carrier neighbor relationship for all operators supported by the cell, obtaining an initial NRT, and determining values of the attributes in the NRT To be determined

The initial NRT is reported to the O&M, and the 0&M is determined according to the operation and maintenance policy of the operator's home zone boundary, and the value of each attribute in the neighbor relationship is set to the final NRT according to the judgment result;

Receive the final NRT returned by 0&M and end the process.

The method according to claim 1 or 2, wherein, when the cell information of the neighboring cell and the cell information of the local cell are different, and the TAC is the same, the UE reports the same. The information includes: a base station identifier of the neighboring cell, a CI, and a list of operators supported by the base station.

The method according to claim 6, wherein, if the operator list supported by the cell and the neighboring cell are not completely the same, the method for establishing the neighbor relationship corresponding to each operator supported by the cell includes:

For each operator that supports both the cell and the neighboring cell, the base station establishes a single-operator neighbor relationship with each attribute being the default value, and obtains an initial NRT;

For all operators that are supported by the local cell but not supported by the neighboring cell, the base station defaults all possible inter-operator neighboring cell relationships and the established attributes of each of the operators. The value of the single-operator neighbor relationship is reported together with 0;

0&M adds the cross-operator neighbor relationship allowed by the operator to all the possible inter-operator neighbor relationships, and sets the attributes of all the inter-operator neighbor relationships in the NRT. Value, and also update the neighbor relationship of each attribute in the initial NRT with a value different from the default value to obtain a final NRT;

Receive the final NRT returned by 0&M and end the process.

The method according to claim 6, wherein, if the operator list supported by the cell and the neighboring cell are completely different, the method for establishing a neighboring cell relationship corresponding to each operator supported by the cell includes:

Reporting all possible cross-operator neighbor relationships of each of the operators supported by the cell to the O0;

Receive the final NRT returned by 0&M and end the process.

The method according to claim 1 or 2, wherein, when the cell information supported by the base station and the TAC are different in the cell information of the neighboring cell and the cell information of the local cell, the UE reports The information includes: a base station identifier of the neighboring area, a CI, a carrier list supported by the base station, and a TAC.

The method according to claim 9, wherein, if the operator list supported by the cell and the neighboring cell are not completely the same, the method for establishing the neighbor relationship corresponding to each operator supported by the cell includes:

For each operator that supports the cell and the neighboring cell at the same time, the base station establishes a single operator neighbor relationship, and obtains an initial NRT, and the values of the attributes in the NRT are to be determined;

For all operators that are supported by the cell but not supported by the neighboring cell, the base station will operate each of the operations The possible cross-operator neighbor relationship of the quotient is reported to the 0&M with the neighbor relationship of the single-operator whose value is to be determined.

The value of each attribute in the neighbor relationship in the initial NRT is set according to the operation and maintenance policy of the carrier's home zone boundary. The cross-operator neighbors allowed by the operator are also included in all possible cross-operator neighbor relationships. The zone relationship is added to the initial NRT, and the values of all the attributes of the inter-operator neighbor relationship in the NRT are set to obtain the final NRT.

Receive the final NRT returned by 0&M and end the process.

The method according to claim 9, wherein, if the operator list supported by the cell and the neighboring cell are completely different, the method for establishing the neighboring cell relationship corresponding to each operator supported by the cell includes:

Receive the final NRT returned by 0&M and end the process.