CN102075902A - Method and device for determining new neighbor cell of serving cell - Google Patents

Abstract

The invention provides a method and a device for determining a new neighboring cell of a serving cell. The present invention utilizes the statistical parameters of network handover to select a set of cells corresponding to the serving cell, and this set of cells serves as the screening condition for adding neighbor cell suggestions; at the same time, the present invention selects the frequency point base station identification code that meets the requirements according to the measurement report of the UE Yes, and match with the cell set, and then determine the new neighbor cell that needs to be added. Because the present invention utilizes parameters such as measurement reports and network switching statistics, and these parameters all come from the existing network, reflecting valuable information such as actual wireless environment, user behavior and traffic distribution, so the present invention can improve the neighbor cell suggestion to the greatest extent. accuracy, and can reduce the workload of optimizers to identify wrong suggestions of the same frequency and same BISC.

Description

A method and device for determining a new neighboring cell of a serving cell

technical field

The invention relates to the technical field of mobile communication, in particular to a method and device for determining a new neighboring cell of a serving cell.

Background technique

When a user terminal (UE, User Equipment) occupies a call in a certain serving cell, the UE will measure certain broadcast control channel (BCCH, Broadcast Control Channel) frequency points or the strength of the main pilot according to the network definition to decide whether to replace a Better serving cells, this is the handover of neighboring cells. In GSM, CDMA, CDMA2000, WCDMA, and TD-SCDMA systems, when it comes to user mobility management, neighbor cells are inseparable. However, in systems of various standards, the number of definable neighboring cells of each cell is limited, which is limited by the processing speed, processing capability and related specifications of the UE.

Changes in network topology, customer distribution, and wireless environment require the neighbor cell structure to keep up with these changes in a timely manner. Neighboring cell optimization is to effectively utilize limited neighboring cell resources and ensure that the network is in a reasonable setting of neighboring cells. Neighborhood optimization is the basic work next to network coverage. Only when the foundation is stable and healthy can all parameter optimization be effective. With network construction, changes in the wireless environment, and changes in user behavior, the relationship between neighboring cells should also be checked and adjusted frequently.

Neighboring cell optimization includes adding adjacent cell optimization, that is, adding a new adjacent cell on the basis of the existing adjacent cell. For a certain cell (assumed to be cell A), due to various reasons, there may be some neighboring cells that need to be defined but are not actually defined. For example, when a new base station (cell) is deployed on the network, the newly deployed cell may need to be added to the neighboring cells of cell A. For another example, some neighbors that need to be defined are missed due to human negligence and other reasons. Add neighbor cell optimization in neighbor cell optimization is to add these cells to its neighbor cell list, so that UE can switch to a better cell normally during the moving process, ensure good call quality and avoid call drop.

In the GSM mobile system, the measurement report uploaded by the UE to the base station or collected by the base station in connected mode can provide a basis for neighbor cell optimization. Modifying some specific parameters on the network side can force the UE to report relevant data of all BCCH frequency points. By processing these massive measurement reports, optimization suggestions for adding neighboring cells can be generated. For example, when there are many measurement reports about a BCCH and BSIC (Base transceiverStation Identity Code) and the signal is strong, it means that the cell corresponding to the BCCH and BSIC should be added as a neighboring cell of the serving cell. Since the UE only measures BCCH, BSIC, and signal strength, it will not read the cell identity code (CI, Cell Identity), and the cell with the same BCCH and BSIC in the entire network is usually not unique, so it is necessary to confirm which cell the BCCH and BSIC belong to , in order to add the correct neighbors. The method adopted in the prior art is to calculate the target cell suggested by adding neighboring cells according to the antenna azimuth angle, base station latitude and longitude, BCCH, network color code and base station color code. As shown in Figure 1, assume that serving cell A-1 receives a large number of measurement reports with BCCH=21 and BSIC=46, and there is no neighboring cell with BCCH=21 and BSIC=46 in the neighboring cells of serving cell A-1. Search the basic database of the whole network, and know that the cells with BCCH=21 and BSIC=46 are B-2 and C-3. Therefore, according to the latitude and longitude of the two cells (used to calculate the distance between the cell and the serving cell) and azimuth (used to determine whether the azimuth angle of the cell is facing the main coverage angle of the serving cell), it is judged which is the correct cell and should be added to the adjacent cell. in the zone table.

In the existing technology, when generating the suggestion of adding neighboring cells, it is usually affected by the data of longitude, latitude and azimuth of the cell in the basic database of the base station. Since the above data in the basic database may have errors, the accuracy of the suggestion of adding neighboring cells is not high, and usually It needs optimization staff to spend a lot of time and effort to confirm. For example, as shown in Figure 2, cells B and C share the same BCCH and BSIC. Since there is a large area of water between A and B, there is almost no traffic distribution, and the two cells are far away and do not cover overlapping areas. , A should add C as a neighbor. However, due to the wrong information in the basic database, the longitude, latitude, and azimuth of the C community are wrongly recorded as C' in Figure 2, thus giving a suggestion of adding A and B as the adjacent area, and missing the important adjacent area on the road c.

It can be seen that the implementation method of adding neighboring cells in the prior art depends on the basic database of the base station. When there is an error in the information in the basic database, the neighboring cell optimization suggestions given by the prior art have a low implementability rate and cannot meet the requirements of daily implementation.

Contents of the invention

The technical problem to be solved by the present invention is to provide a method and device for determining a new neighboring cell of a serving cell

In order to solve the problems of the technologies described above, the present invention provides the following solutions:

A method for determining a new neighbor of a serving cell, comprising:

According to the measurement report reported by the user terminal collected by the serving cell, select the first one whose signal strength is greater than the predetermined first threshold, the reporting frequency is greater than the predetermined second threshold, and does not match the frequency point base station identification code pair of the neighboring cell of the serving cell. One type of frequency point base station identification code pair;

For each frequency base station identification code pair in the first type of frequency base station identification code pair, search for a cell that matches the each frequency base station identification code pair in the predetermined cell set, and according to the found matching cells, and determining new neighbor cells to be added to the serving cell;

Wherein, the set of predetermined cells includes: all first cells in the upper-level area to which the serving cell belongs, and all cells in the upper-level area to which the second cell that has been handed over with the first cell belongs to.

Preferably, the above method also includes:

Adding the new neighbor cell to the neighbor cell list of the serving cell.

Preferably, in the above method,

The upper-level area is a location area code LAC coverage area or a base station controller BSC jurisdiction area.

Preferably, in the above method, the determining the new neighboring cell to be added to the serving cell according to the found matching cell includes:

When it is found in the set of cells that only one matching cell matches the base station identification code pair of each frequency point, the information of the matching cell is directly used as the new neighboring cell.

Preferably, in the above method, the determining the new neighboring cell to be added to the serving cell according to the found matching cell further includes:

When more than one matching cell is found in the set of cells that matches the base station identification code pair of each frequency point, the number of adjacent cell hops from the serving cell to each matching cell is calculated respectively, and the adjacent cell The matching cell with the least hop count is used as the new neighbor cell, and the neighbor cell hop count is the minimum hop count from the serving cell to the matching cell, wherein the distance from the current cell to the neighbor cell of the current cell is one hop.

Preferably, in the above method, when the number of matching cells with the least number of hops in the neighboring cell is greater than 1, the matching cell with the smallest number of hops in the neighboring cell as the new neighboring cell is: hop from the neighboring cell Select the matching cell with the most handover times or the largest signal strength from the matching cells with the fewest number as the new neighboring cell.

Preferably, in the above method, in the process of calculating the number of neighbor hops from the serving cell to each matching cell, if it is judged that the number of neighbor hops from the serving cell to any matching cell is greater than a predetermined value, stop calculating the serving cell The number of hops to the neighboring cell of any matching cell, and rejecting the matching cell as the new neighboring cell.

The present invention also provides a device for determining a new neighboring cell of a serving cell, including:

The selection unit is configured to select, according to the measurement report reported by the user terminal collected by the serving cell, a base station identification code with a signal strength greater than a predetermined first threshold, a reporting frequency greater than a predetermined second threshold, and a neighboring cell of the serving cell For unmatched first-type frequency point base station identification code pairs;

A new neighboring cell determination unit, configured to, for each frequency base station identification code pair in the first type of frequency point base station identification code pair, search for a base station identification code pair that matches each frequency point base station identification code pair in a predetermined cell set The matching cell, and according to the found matching cell, determine the new neighbor cell that needs to be added to the serving cell;

Wherein, the set of predetermined cells includes: all first cells in the upper-level area to which the serving cell belongs, and all cells in the upper-level area to which the second cell that has been handed over with the first cell belongs to.

Preferably, the above-mentioned device also includes:

The neighbor cell adding unit is configured to add the new neighbor cell to the neighbor cell list of the serving cell.

Preferably, in the above device,

The upper-level area is the coverage area of the LAC or the jurisdiction area of the BSC.

Preferably, in the above device, the unit for determining the new neighboring cell includes:

The first processing unit is configured to directly use the matching cell as the new neighbor cell when only one matching cell is found in the set of cells that matches the base station identification code pair of each frequency point .

Preferably, in the above device, the new neighboring cell determination unit further includes:

The second processing unit is configured to find out in the set of cells that the number of matching cells that match the base station identification code pair of each frequency point is more than one, for each matching cell, calculate the serving cell The number of adjacent cell hops to each matching cell, and the matching cell with the least adjacent cell hop count as the new adjacent cell, the adjacent cell hop count is the minimum hop count from the serving cell to the matching cell, wherein, from the current The distance from a cell to the neighboring cell of the current cell is one hop.

Preferably, in the above device,

The second processing unit is further configured to, when the number of matching cells with the fewest hops in the neighboring cells is greater than one, select the one with the most handover times or the highest signal strength from the matching cells with the fewest hops in the neighboring cells. A matching cell is used as the new neighboring cell.

Preferably, in the above device,

The second processing unit is further configured to stop if it is judged that the hop count from the serving cell to any matching cell is greater than a predetermined value during the process of calculating the hop count from the serving cell to each matching cell. Calculate the number of neighbor cell hops from the serving cell to the any matching cell, and reject any matching cell as the new neighbor cell.

It can be seen from the above that the present invention provides a method and device for determining a new neighbor cell of a serving cell, which uses parameters such as UE measurement report and network handover statistics to perform the operation of adding neighbor cells. Since the above parameters all come from the live network and reflect valuable information such as the actual wireless environment, user behavior, and traffic distribution, it can maximize the accuracy of adding neighbor cell suggestions and reduce the need for optimization staff to identify the same frequency (BCCH frequency points) ), the same workload as BISC's wrong suggestion. The invention overcomes the disadvantages of the traditional implementation method of adding neighboring areas that the calculation process is complex and is easily affected by wrong information (such as latitude and longitude, azimuth) in the basic database. Preferably, compared with the prior art, the implementation of the operation of adding adjacent cells in the present invention is simple and feasible.

Description of drawings

Fig. 1 is the application schematic diagram of the method for adding neighboring cells in the prior art;

Fig. 2 is a schematic diagram of the effect of defects existing in the method of adding neighboring cells in the prior art;

3 is a schematic flowchart of a method for determining a new neighboring cell of a serving cell according to an embodiment of the present invention;

FIG. 4 is a schematic diagram of an example of the set of predetermined cells in the embodiment of the present invention;

FIG. 5 is a schematic diagram of calculating the hop count of adjacent cells in an embodiment of the present invention;

Fig. 6 is a schematic structural diagram of an apparatus for determining a new neighboring cell of a serving cell according to an embodiment of the present invention.

Detailed ways

The invention provides a method and a device for determining a new neighboring cell of a serving cell, and improves the accuracy of adding a neighboring cell suggestion based on the topological structure of the neighboring cell of the existing network. The present invention will be further described through specific embodiments below in conjunction with the accompanying drawings.

As shown in 3, the method for determining the new neighboring cell of the serving cell described in the embodiment of the present invention includes the following steps:

Step 30, control the serving cell to issue a BCCH list including all BCCH frequency points to the user terminal.

Here, related parameters can be modified on the network side, and related control commands can be sent to the UE through the serving cell, so as to force the UE to measure all BCCH frequency points including the BCCH frequency points of neighboring cells. The serving cell sends the BCCH list including all BCCH frequencies to all UEs within the serving cell, and controls the UE to measure all BCCH frequencies in the BCCH list; each UE receives the BCCH sent by the serving cell After the list, measure each BCCH frequency point in the BCCH list and report a measurement report to the serving cell. The measurement report includes the BCCH frequency point, BSIC and signal strength of the cell measured in the cell; the serving cell collects Measurement reports reported by all terminals. In the present invention, the BCCH frequency point and BSIC of the cell are collectively referred to as a frequency point base station identification code pair, and the signal strength of the cell is used as the signal strength of the frequency point base station identification code pair.

Step 31, according to the measurement report reported by the user terminal collected by the serving cell, from the frequency point base station identification code pair included in the measurement report, select the signal strength greater than the predetermined first threshold, the reporting frequency greater than the predetermined second threshold, and The first type of frequency base station identification code pair that does not match the frequency base station identification code pair of the neighboring cell of the serving cell, the measurement report includes the frequency base station identification code pair and signal strength of the measured cell, The frequency base station identification code pair refers to the BCCH frequency and BSIC of the cell.

Here, in this embodiment, the network side selects the first type of frequency base station identification code pair from the frequency base station identification code pairs included in the measurement report according to the measurement report collected by the serving cell. In this embodiment, the signal strength of the cell in the measurement report is used as the signal strength corresponding to the frequency point base station identification code pair of the cell. In this embodiment, the UE may only report the measurement report of the cell whose signal strength is greater than the predetermined value, and does not report the measurement report of the cell whose signal strength is less than the predetermined value. The predetermined value here should be less than or equal to the predetermined first threshold.

Here, for any pair of base station identification codes at any frequency point, the reporting frequency may be the number of occurrences of the base station identification code pair at this frequency point in the measurement reports reported by all UEs, or the number of times the base station identification code pair at this frequency point is reported by all UEs. The ratio of the number of occurrences in the measurement report to the sum of the number of occurrences of all frequency point base station identification code pairs in the measurement reports reported by all UEs.

Step 32, for each frequency base station identification code pair in the first type of frequency base station identification code pair, search for a matching cell that matches the each frequency base station identification code pair in the predetermined cell set, and According to the found matching cell, determine the new neighboring cell that the serving cell needs to add; wherein, the predetermined set of cells includes: all first cells in the upper-level area to which the serving cell belongs, and all first cells that are related to the first cell All cells in the upper-level area to which the second cell that has been handed over belongs to.

Step 33, adding the new neighbor cell to the neighbor cell list of the serving cell, specifically including adding parameters such as BCCH frequency point, BSIC and CI of the new neighbor cell.

Usually in the system, a plurality of geographically adjacent cells are configured to belong to the same location area code (LAC, Location Area Code), or belong to the same base station controller (Base Station Controller), that is, a certain LAC coverage area or A BSC jurisdiction usually includes multiple cells. Therefore, in the above step 32, the upper-level area may be the coverage area of the LAC, or the area under the jurisdiction of the BSC.

In the above step 32, the set of predetermined cells includes: all first cells in the upper-level area to which the serving cell belongs, and all cells in the upper-level area to which the second cell that has been handed over with the first cell belongs. Here, the second cell that has been handed over from the first cell refers to a terminal that has handed over from the first cell to the second cell within a recent predetermined period of time. Through this selection method, this embodiment excludes neighboring cells that have not actually been handed over. The reason why these neighboring cells have not been handed over may be caused by system misconfiguration or changes in the wireless environment. Therefore, they need to be excluded. There may be overlapping cells between all first cells in the upper-level area to which the serving cell belongs and all cells in the upper-level area where the second cell that has been handed over from the first cell belongs to, and the predetermined cell Sets take their intersection.

In the above-mentioned step 32, each frequency point base station identification code pair in the first type of frequency point base station identification code pair is matched with the frequency point base station identification code pair of the cell in the predetermined cell set, if matched, Then, according to the BCCH, BSIC and CI information of the matched cell, a new neighbor cell is added to the neighbor cell of the serving cell.

Steps 30-33 in the foregoing embodiments may be performed by the network side.

In this embodiment, parameters such as UE measurement reports and network handover statistics are used to perform the operation of adding neighbor cells. The above parameters are all from the live network, reflecting valuable information such as the actual wireless environment, user behavior, and traffic distribution. In addition, the BCCH frequency resources and the topology of adjacent cells in the existing network are the results of long-term continuous optimization, and they are usually reasonable to a certain extent. The cells of BSIC appear in the whole network, and the distance between them can also be guaranteed to be far enough. Based on this, this embodiment breaks through the traditional thinking and makes full use of the existing network information to perform the operation of adding neighboring cells. Workload with BISC wrong advice. This embodiment overcomes the disadvantages of the traditional implementation method of adding neighboring areas that the calculation process is complex and is easily affected by wrong information in the basic database (such as longitude, latitude, and azimuth).

In order to help understand this embodiment, a specific application example is used as an illustration below.

In this application example, the upper-level area is described as the BSC jurisdiction area. For the LAC, it is shown in Figure 4. Figure 4 shows multiple BSC jurisdiction areas, and each closed area is a BSC jurisdiction area. There are A~K BSC jurisdictions. The solid circle in the jurisdiction of BSC A indicates the serving cell, and the BSC jurisdiction to which the serving cell belongs is the jurisdiction of BSC A. All hollow circles in Fig. 4 (comprising dotted line hollow circles and solid line hollow circles) represent the neighbors of all cells in the jurisdiction of BSC A, wherein, the solid line hollow circles represent that a successful handover has occurred in the latest predetermined period of time Neighboring cells (that is, the second cell), hollow circles with dotted lines represent neighboring cells that have not undergone successful handover within a recent predetermined period of time. The shaded circles represent other cells except the neighbors of all cells in the jurisdiction of BSC A mentioned above.

It can be seen that the second cells in Figure 4 are distributed in BSC A, B, C, E, G, H, and I jurisdictions, and the upper-level areas to which the second cells belong are BSC A, B, C, E, G, H, and I jurisdiction areas, and the BSC jurisdiction area to which the serving cell belongs is BSC A jurisdiction area, so the predetermined cell set is within the BSC A, B, C, E, G, H, and I jurisdiction areas All districts. Although the BSCL jurisdiction area and the BSFC F jurisdiction area in Fig. 4 also include the neighbors of the cell in the jurisdiction area of BSCA A, they are excluded because no successful handover (dotted circle) occurs. The cell set obtained in the above manner includes a more suitable range around the serving cell, and at the same time avoids the problem of too large a set area caused by misdefinition of individual neighboring cells. Because when an individual cell in BSC A mistakenly defines a distant neighbor cell, the actual number of successful handovers of this neighbor cell will be 0, so it can be filtered out. This set is used as the scope of investigation and as the filtering condition for adding neighbor area suggestions. Because the cells with the same frequency and the same BSIC in the existing network are usually distributed far away through network planning or daily optimization work, usually only the only cell (according to BCCH and BSIC) is matched in this set, and the potential neighbors can be accurately determined. district.

The BSC jurisdiction area is used as an example to illustrate the above, and the principle is the same for the LAC coverage area, which will not be repeated here.

In the above-mentioned step 32, the matching cell matching the base station identification code pair of each frequency point is searched in the set of predetermined cells, and the number of matching cells obtained is usually one. At this time, the information of the matching cell is directly , information such as the BCCH frequency point, BSIC and CI of the matching cell is added to the neighbor cell list of the serving cell.

In the above step 32, search for matching cells that match the base station identification code pair of each frequency point in the set of predetermined cells, and when the number of matching cells obtained is greater than 1, at this time, respectively calculate and obtain the service The number of neighbor hops from the cell to each matching cell, and the information of the matching cell with the least number of neighbor hops is added to the neighbor list of the serving cell. The number of hops, where the distance from the current cell to the neighboring cell of the current cell is one hop.

The above method of comparing the number of hops is to determine which cell is the correct cell by comparing the number of steps of the shortest path on the basis of the topology structure of the adjacent cells of the existing network. That is, search for the cell corresponding to each frequency point base station identification code pair in the neighboring cell of the serving cell, if not found, continue to search in the neighboring cell of the serving cell, and so on until it is found. The cell corresponding to the least number of hops is the cell that should be added as a neighboring cell. As shown in Figure 5, the minimum number of hops from serving cell A to matching cell B is 3 hops, and the minimum number of hops from serving cell A to matching cell C is 5 hops. area list. If the calculated number of matching cells with the least hops in adjacent cells is greater than 1, for example, the hops from serving cell A to matching cells B and C are all 3 hops, at this time, you can hop from the adjacent cells Select the matching cell with the most switching times or the largest signal strength from the least matching cells, and add the information of the selected matching cell to the neighbor cell list of the serving cell.

Usually, most of the matching cells that should be added as neighboring cells should be found within "three hops". Therefore, in practical applications, the program can be simplified to stop when it reaches the third layer of neighboring cells to reduce the amount of calculation. That is, in the above process of calculating the number of neighbor hops from the serving cell to each matching cell, if it is judged that the number of neighbor hops from the serving cell to any matching cell is greater than a predetermined value, then stop calculating the number of hops from the serving cell to any matching cell. Matching the hop count of neighboring cells of the cell, and refusing to add any matching cell to the list of neighboring cells of the serving cell. Assuming that more than one cell with the same BCCH and the same BSIC is found within three hops, the possibility of this situation is very low, usually because of errors in network planning, and some cells should be changed to frequency (BCCH frequency point) or LAC, etc. operate.

It can be seen from the above that in this embodiment, in the process of confirming the neighbor cell suggestion, the topological structure of the neighbor cell on the existing network, the UE actual measurement report and handover statistics and other information are considered comprehensively, so that the wireless environment, user behavior, The traffic distribution is taken into consideration, and the actual behavior of users on the live network is used to assist in the identification of neighboring cells. In this embodiment, information in the basic database such as latitude and longitude and azimuth is no longer used, thereby getting rid of fallacies caused by errors in the basic database, and the implementation of the algorithm in this embodiment is relatively simple.

Based on the above-mentioned method for determining a new neighboring cell of a serving cell, this embodiment also provides a device for determining a new neighboring cell of a serving cell, as shown in FIG. 6 , the device includes:

The selection unit is configured to select, according to the measurement report reported by the user terminal collected by the serving cell, a base station identification code with a signal strength greater than a predetermined first threshold, a reporting frequency greater than a predetermined second threshold, and a neighboring cell of the serving cell For unmatched first-type frequency point base station identification code pairs;

Here, the measurement report includes the frequency point base station identification code pair and signal strength of the measured cell, and the frequency point base station identification code pair refers to the BCCH frequency point and BSIC of the cell;

A new neighboring cell determination unit, configured to, for each frequency base station identification code pair in the first type of frequency point base station identification code pair, search for a base station identification code pair that matches each frequency point base station identification code pair in a predetermined cell set matching cell, and determine a new neighbor cell to be added to the serving cell;

Wherein, the set of predetermined cells includes: all first cells in the upper-level area to which the serving cell belongs, and all cells in the upper-level area to which the second cell that has been handed over with the first cell belongs to.

Here, the upper-level area is the coverage area of the LAC or the jurisdiction area of the BSC.

Preferably, the device shown in FIG. 6 further includes: a neighboring cell adding unit, configured to add the new neighboring cell to the serving cell's neighboring cell list.

Preferably, in the device shown in FIG. 6, the new neighbor determining unit includes:

The first processing unit is configured to directly use the matching cell as the new neighbor cell when only one matching cell is found in the set of cells that matches the base station identification code pair of each frequency point .

Preferably, in the device shown in FIG. 6, the new neighbor determination unit further includes:

The second processing unit is configured to find out in the set of cells that the number of matching cells that match the base station identification code pair of each frequency point is more than one, for each matching cell, calculate the serving cell The number of adjacent cell hops to each matching cell, and the matching cell with the least adjacent cell hop count as the new adjacent cell, the adjacent cell hop count is the minimum hop count from the serving cell to the matching cell, wherein, from the current The distance from a cell to the neighboring cell of the current cell is one hop.

Preferably, in the device shown in FIG. 6 , the second processing unit is further configured to, when the number of matching cells with the fewest hops in the neighboring cell is greater than 1, select the matching cell from the neighboring cell with the fewest hops Select the matching cell with the most handover times or the largest signal strength as the new neighbor cell.

Preferably, in the device shown in FIG. 6 , the second processing unit is further configured to calculate the number of hops between the serving cell and each matching cell if it is determined that the serving cell goes to any matching cell If the number of neighbor cell hops is greater than a predetermined value, stop calculating the neighbor cell hop count from the serving cell to any matching cell, and refuse to use any matching cell as the new neighbor cell.

To sum up, the method and device for determining the new neighbor cell of the serving cell provided by the embodiment of the present invention consider factors such as the wireless environment, user behavior, and traffic distribution in the process of adding the neighbor cell, and utilize the actual network user's actual situation. Behavior to assist in the identification of neighbors. This embodiment does not rely on the information in the basic database such as latitude and longitude, azimuth, etc., and gets rid of the fallacy caused by the error in the basic database.

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

Claims (14)

1. A method for determining a new neighbor of a serving cell, comprising: According to the measurement report reported by the user terminal collected by the serving cell, select the first one whose signal strength is greater than the predetermined first threshold, the reporting frequency is greater than the predetermined second threshold, and does not match the frequency point base station identification code pair of the neighboring cell of the serving cell. One type of frequency point base station identification code pair; For each frequency base station identification code pair in the first type of frequency base station identification code pair, search for a cell that matches the each frequency base station identification code pair in the predetermined cell set, and according to the found matching cells, and determining new neighbor cells to be added to the serving cell; Wherein, the set of predetermined cells includes: all first cells in the upper-level area to which the serving cell belongs, and all cells in the upper-level area to which the second cell that has been handed over with the first cell belongs to. 2. The method of claim 1, further comprising: Adding the new neighbor cell to the neighbor cell list of the serving cell. 3. The method of claim 1 or 2, wherein, The upper-level area is a location area code LAC coverage area or a base station controller BSC jurisdiction area. 4. The method according to claim 1 or 2, wherein, according to the found matching cell, determining the new neighbor cell to be added to the serving cell comprises: When it is found in the set of cells that only one matching cell matches the base station identification code pair of each frequency point, the information of the matching cell is directly used as the new neighboring cell. 5. The method according to claim 4, wherein, according to the found matching cell, determining the new neighbor cell to be added to the serving cell further comprises: When more than one matching cell is found in the set of cells that matches the base station identification code pair of each frequency point, the number of adjacent cell hops from the serving cell to each matching cell is calculated respectively, and the adjacent cell The matching cell with the least hop count is used as the new neighbor cell, and the neighbor cell hop count is the minimum hop count from the serving cell to the matching cell, wherein the distance from the current cell to the neighbor cell of the current cell is one hop. 6. The method according to claim 5, wherein when the number of matching cells with the fewest hops in the neighboring cells is greater than one, the matching cell with the fewest hops in the neighboring cells is used as the new neighboring cell Yes: Select the matching cell with the most handover times or the highest signal strength from the matching cells with the fewest hops in the neighboring cells as the new neighboring cell. 7. The method according to claim 5, wherein, in the process of calculating the neighbor hops from the serving cell to each matching cell, if it is judged that the neighbor hops from the serving cell to any matching cell are greater than If the predetermined value is exceeded, the calculation of the number of neighbor cell hops from the serving cell to the any matching cell is stopped, and any matching cell is rejected as the new neighbor cell. 8. A device for determining a new neighboring cell of a serving cell, comprising: The selection unit is configured to select, according to the measurement report reported by the user terminal collected by the serving cell, a base station identification code with a signal strength greater than a predetermined first threshold, a reporting frequency greater than a predetermined second threshold, and a neighboring cell of the serving cell For unmatched first-type frequency point base station identification code pairs; A new neighboring cell determination unit, configured to, for each frequency base station identification code pair in the first type of frequency point base station identification code pair, search for a base station identification code pair that matches each frequency point base station identification code pair in a predetermined cell set The matching cell, and according to the found matching cell, determine the new neighbor cell that needs to be added to the serving cell; Wherein, the set of predetermined cells includes: all first cells in the upper-level area to which the serving cell belongs, and all cells in the upper-level area to which the second cell that has been handed over with the first cell belongs to. 9. The device of claim 7, further comprising: The neighbor cell adding unit is configured to add the new neighbor cell to the neighbor cell list of the serving cell. 10. Apparatus as claimed in claim 8 or 9, characterized in that, The upper-level area is the coverage area of the LAC or the jurisdiction area of the BSC. 11. Apparatus as claimed in claim 8 or 9, characterized in that, The new neighbor determination unit includes: The first processing unit is configured to directly use the matching cell as the new neighbor cell when only one matching cell is found in the set of cells that matches the base station identification code pair of each frequency point . 12. The device according to claim 11, wherein the new neighbor cell determining unit further comprises: The second processing unit is configured to find out in the set of cells that the number of matching cells that match the base station identification code pair of each frequency point is more than one, for each matching cell, calculate the serving cell The number of adjacent cell hops to each matching cell, and the matching cell with the least adjacent cell hop count as the new adjacent cell, the adjacent cell hop count is the minimum hop count from the serving cell to the matching cell, wherein, from the current The distance from a cell to the neighboring cell of the current cell is one hop. 13. The apparatus of claim 12, wherein The second processing unit is further configured to, when the number of matching cells with the fewest hops in the neighboring cells is greater than one, select the one with the most handover times or the highest signal strength from the matching cells with the fewest hops in the neighboring cells. A matching cell is used as the new neighboring cell. 14. The apparatus of claim 12, wherein The second processing unit is further configured to stop if it is judged that the hop count from the serving cell to any matching cell is greater than a predetermined value during the process of calculating the hop count from the serving cell to each matching cell. Calculate the number of neighbor cell hops from the serving cell to the any matching cell, and reject any matching cell as the new neighbor cell.

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