CN103002500B - Obtain method, the Apparatus and system of adjacent area coverage rate and covering relation - Google Patents

Abstract

The invention discloses a method, a device and a system for obtaining the coverage rate and coverage relationship of adjacent cells, according to the number of times the UE reports measurement reports sent by UEs in a cell at a certain frequency point and the reported measurement reports include the measurement reports of adjacent cells The number of neighbor cells in the local cell can be obtained; similarly, the above-mentioned adjacent cell can also obtain the coverage rate of the local cell in the adjacent cell according to the above method, and the local cell can then obtain the coverage rate of the local cell in the local cell according to the neighbor cell. The coverage ratio of the local cell and the coverage ratio of the local cell in the neighboring cell are used to obtain the coverage relationship with the neighboring cell. Therefore, according to the method provided by the present invention, the local cell can automatically obtain the coverage rate of the adjacent cell, and then automatically obtain the coverage relationship with the corresponding adjacent cell according to the coverage rate, and can obtain the new coverage relationship according to the obtained new coverage relationship and the current coverage. Whether the relationship is the same or not, dynamically update the coverage relationship between neighboring cells, without manual discovery and addition, simple implementation, high efficiency, and can greatly reduce operating costs.

Description

Method, device and system for obtaining neighbor cell coverage and coverage relationship

technical field

The present invention relates to the field of communications, in particular to a method, device and system for acquiring coverage ratios and coverage relationships of adjacent cells.

Background technique

The ANR (AutoNeighborRelation) technology in the LTE (LongTermEvolution, long-term evolution) system is a technology that relies on the UE measurement report to automatically discover the neighbor relationship. The cost of network optimization, but ANR can only identify and add two physically similar cells as adjacent cells, and cannot identify and process the coverage relationship of the cells; the coverage relationship of the cells is the basic information and necessary information for the base station to implement various mobility strategies. The selected information has an important impact on the mobility execution strategy of the UE (User Equipment) controlled by the base station, such as controlling the UE to perform handover or redirection. Since ANR cannot identify and process the coverage relationship of the cell, the current processing of the coverage relationship of the adjacent cell The method still adopts the way of manual addition, and the adding process is cumbersome, with low efficiency and high operating cost.

Contents of the invention

The main technical problem to be solved by the present invention is to provide a method, device and system with high working efficiency and low operating cost, which can automatically obtain the coverage rate of adjacent cells and the coverage relationship of adjacent cells

In order to solve the above technical problems, the present invention provides a method for obtaining coverage of adjacent cells, including:

receiving a measurement report reported by the UE in the local cell at a certain frequency point, and obtaining the number of times the UE in the local cell reports the measurement report at the frequency point;

Parse the reported measurement report to obtain the number of measurement reports that include the same neighboring cell in the reported measurement report;

Obtain the coverage of the neighboring cell in the local cell according to the number of times the UE in the local cell reports measurement reports at the frequency point and the number of measurement reports of the same neighboring cell included in the reported measurement reports Rate.

In an embodiment of the present invention, the neighbor cell is obtained according to the number of times the UE in the local cell reports measurement reports at the frequency and the number of measurement reports reported at the frequency that include the neighbor cell. The coverage of the zone in the local cell includes:

Set the measurement report reporting threshold value, and set the first count value used to count the number of UE uploaded measurement reports under the frequency point and the first count value used to count the number of measurement reports that include the neighboring cell under the frequency point Second count value;

The UE in the local cell uploads a measurement report at the frequency point, the first count value is increased by 1, and at the same time, when it is determined that the measurement report includes the neighboring cell, the second count value is increased by 1;

When the first count value is equal to the measurement report reporting threshold, divide the current second count value by the threshold value or by the current first count value to obtain the coverage rate.

In an embodiment of the present invention, in the step of setting the measurement report reporting threshold value, it also includes setting the neighbor cell signal quality threshold value, when the signal quality of the neighbor cell included in the measurement report is greater than the specified Only when the signal quality threshold value of the neighbor cell is above, it is determined that the measurement report includes the neighbor cell; otherwise, it is determined that the measurement report does not include the neighbor cell.

In an embodiment of the present invention, the UE reports the measurement report according to a measurement configuration, and the measurement configuration includes an inter-frequency handover measurement configuration, an intra-frequency handover measurement configuration, and an inter-system handover measurement configuration.

In an embodiment of the present invention, the coverage refers to the actual coverage range between cells.

The present invention also provides a method for obtaining the coverage relationship of neighboring cells, including:

The local cell and the corresponding neighboring cell respectively obtain the first coverage rate of the neighboring cell in the local cell and the local coverage of the local cell according to the method according to any one of claims 1-5. The second coverage rate in the adjacent area;

The local cell obtains a coverage relationship with the neighboring cell according to the first coverage rate and the second coverage rate.

In an embodiment of the present invention, after the local cell obtains the first coverage, it further includes sending it to the neighboring cell; after the neighboring cell obtains the second coverage, It also includes sending it to the local cell.

In an embodiment of the present invention, after the local cell obtains the coverage relationship with the neighboring cell, it further includes:

The local cell judges whether the current coverage relationship with the neighboring cell is the same as the coverage relationship obtained by the local cell, and if not, updates it to the coverage relationship obtained by the local cell.

In one embodiment of the present invention, before the local cell obtains the first coverage and the second coverage, it further includes the step of setting a maximum threshold value of the coverage, and the local cell obtains the After the first coverage rate and the second coverage rate, it also includes comparing the first coverage rate and the second coverage rate with the maximum threshold value, and according to the comparison result, the coverage relationship between them.

In an embodiment of the present invention, the covering relationship includes same-covering relationship, containing-covering relationship, contained-covering relationship and adjacent relationship.

In one embodiment of the present invention, before the local cell obtains the first coverage, it further includes the step of setting a coverage minimum threshold, and after the local cell obtains the first coverage, it further includes The obtained first coverage rate is compared with the minimum coverage rate threshold, and if it is smaller than the minimum coverage rate threshold, the adjacent cell is deleted.

The present invention also provides a device for obtaining the coverage of adjacent cells, including a statistical processing module, and the statistical processing module is used to obtain the coverage according to the above method.

The present invention also provides a system for obtaining the coverage relationship of adjacent cells, including the above-mentioned device for obtaining the coverage of adjacent cells, and also includes a transceiver device and a processing device connected to the device, and the transceiver device is also connected to the The processing device is connected, and the sending and receiving device is used to send the coverage obtained by the local cell and receive the coverage sent by the neighboring cell, and the processing device is used to send the coverage according to the coverage obtained by the local cell and the received neighboring cell. Get the coverage relationship between the local cell and the neighbor cell.

In an embodiment of the present invention, the processing device obtains the coverage relationship between the local cell and the neighboring cell according to the coverage obtained by the local cell and the received coverage sent by the neighboring cell, including:

The processing device compares the coverage of the local cell and the coverage received by the transceiver device with the set coverage maximum threshold, and obtains the coverage relationship between the local cell and the neighboring cell according to the comparison result .

The beneficial effects of the present invention are: in the present invention, the local cell can include the number of measurement reports reported by the UE at a certain frequency point and the measurement report of the adjacent cell according to the number of times the UE in the cell sends the measurement report at a certain frequency point. The number of measurement reports is used to obtain the coverage rate of the neighbor cell in the cell; similarly, the above-mentioned neighbor cell can also obtain the coverage rate of the local cell in the neighbor cell according to the above method, and the local cell can then obtain the coverage rate of the neighbor cell according to the neighbor cell. The coverage ratio of the zone in the local cell and the coverage ratio of the local cell in the neighboring cell obtain the coverage relationship with the neighboring cell. Therefore, according to the method provided by the present invention, the coverage of adjacent cells can be automatically obtained, and then the coverage relationship with the corresponding adjacent cells can be automatically obtained according to the coverage, without manual discovery and addition, simple implementation, high efficiency, and large Significantly reduce operating costs.

Description of drawings

Fig. 1 is a flow chart of obtaining neighbor cell coverage in an embodiment of the present invention;

Fig. 2 is a schematic diagram of the same coverage relationship of an embodiment of the present invention;

Fig. 3 is a schematic diagram of the inclusion and coverage relationship of an embodiment of the present invention;

FIG. 4 is a schematic diagram of a contained coverage relationship according to an embodiment of the present invention;

FIG. 5 is a schematic diagram of adjacent coverage relationships according to an embodiment of the present invention;

Fig. 6 is a block diagram of a system for obtaining coverage relations of neighboring cells according to an embodiment of the present invention.

detailed description

The method provided by the present invention can use the measurement report reported by the UE in the cell to obtain the coverage rate of adjacent cells, and then obtain the coverage relationship between adjacent cells, and can automatically discover and optimize the coverage of adjacent cells of the same frequency, different frequency, and different systems relationship, simple implementation, and low operating costs. The present invention will be further described in detail below through specific embodiments in conjunction with the accompanying drawings.

Embodiment one

In this example, the local cell obtains the coverage rate of the neighboring cell in the cell according to the number of measurement reports reported by UEs within its coverage area and the number of measurement reports that include the same neighboring cell in the reported measurement reports. The coverage of the cell in this example refers to the actual coverage of the cell, not the usual theoretical coverage. The following examples illustrate the difference between theoretical coverage and actual coverage:

Assuming that there are two adjacent cells A and B, and the coverage radius of cells A and B are both 1000 meters, the theoretical coverage of the 1000-meter cell mentioned here means that the UE is theoretically located 1000 meters away from the base station. You can still access calls, but in the actual network deployment, the UE may have connected or switched to other cells at a distance of 800 meters from the base station, so the actual coverage radius between the above two cells should be 800 meters. From the perspective of UE mobility, the base station pays more attention to the actual coverage between cells. In this example, the measurement report uploaded by the UE in the cell refers to the handover measurement report.

In this example, the above-mentioned cell A is the local cell, and the above-mentioned cell B is a neighboring cell B among the multiple neighboring cells of the cell A at a certain frequency point as an example, to further illustrate the present invention, please refer to FIG. 1 ;

Receive the measurement report reported by the UE in the local cell A at a certain frequency point, and obtain the number of times the UE in the local cell A reports the measurement report at the frequency point;

Parse the reported measurement report to obtain the number of measurement reports that include the same neighboring cell B in the reported measurement report;

According to the number of measurement reports reported by the UE in the local cell A at the frequency and the number of measurement reports that include the neighboring cell B in the reported measurement reports, the coverage of the neighboring cell B in the local cell A is obtained. Among them, according to the number of measurement reports reported by the UE in the local cell A at the frequency point and the number of measurement reports of the neighboring cell B included in the reported measurement report, the coverage of the neighboring cell B in the local cell A includes:

Setting the measurement report reporting threshold, and simultaneously setting a first count value for counting the number of UE uploaded measurement reports and a second count value for counting the number of measurement reports including the neighboring cell B;

When the UE in the local cell uploads a measurement report at this frequency point, the first count value increases by 1, and at the same time, when it is judged that the measurement report includes neighboring cell B, the second count value increases by 1;

When the first count value is equal to the measurement report report threshold value, divide the current second count value by the measurement report report threshold value or by the current first count value to obtain the neighbor cell B in the local cell A coverage.

When judging that the measurement report includes the neighbor cell B, it can be judged according to the signal quality threshold value of the neighbor cell set at the same time in the step of setting the measurement report report threshold value. When the signal quality of the neighbor cell B contained in the measurement report is greater than It is determined that the measurement report includes the neighboring cell B only if the signal quality threshold value of the neighboring cell is used; otherwise, it is determined that the measurement report does not include the neighboring cell B.

In this example, the UE in the cell reports the measurement report according to the measurement configuration issued by LTE, where the measurement configuration may include inter-frequency handover measurement configuration, intra-frequency handover measurement configuration, and inter-system handover measurement configuration, so the method provided in this example can Automatically discover and optimize the coverage relationship of adjacent cells of the same frequency, different frequency, and different systems, regardless of the wireless access system, and can judge the coverage relationship between the same frequency and different frequency adjacent cells within LTE (TDD-LTE, FDD-LTE) and the coverage relationship between neighboring cells of various standards (UTRA-TDD, UTRAN-FDD, CDMA-HRPD, CDMA-1xRTT, GERAN); and this example obtains the coverage of neighboring cells according to the measurement report uploaded by UE, shielding the wireless system Complexity, the most true reflection of the coverage relationship between cells, easy to implement, low operating costs.

In this example, on the basis of obtaining the coverage of neighboring cells by the above method, a method of obtaining the coverage relationship of neighboring cells is also provided, as follows:

The local cell A and the adjacent cell B corresponding thereto obtain the first coverage rate of the adjacent cell B in the local cell A and the second coverage rate of the local cell A in the adjacent cell B according to the above method;

The local cell A obtains the coverage relationship with the neighboring cell B according to the first coverage rate and the second coverage rate.

In this example, after the local cell A obtains the first coverage rate, it also includes the step of sending it to the neighboring cell B; similarly, after the neighboring cell B obtains the second coverage rate, it also includes the step of sending it The step for the local cell A is to select the S1 interface, the X2 interface, or the intra-site communication interface for forwarding according to the actual situation at the time of sending the above-mentioned coverage between cells.

In this example, the coverage relationship between adjacent cells includes the same coverage relationship, the included coverage relationship, the inclusion coverage relationship, and the adjacent coverage relationship. Please refer to Figure 2-Figure 5,

For the same coverage relationship, as shown in Figure 2, the probability that the UE residing in cell A reports the measurement report of neighbor cell B tends to 100%, while the UE residing in cell B reports the probability of neighbor cell A in the measurement report. The probability tends to be 100%.

For the included coverage relationship, as shown in Figure 3, the probability that UE residing in cell A reports B in the measurement report tends to 100%, and the probability that UE residing in cell B reports neighbor cell A in the measurement report should be Tend to a certain fixed value of Coverage, the size of Coverage depends on the ratio of the overlapping coverage of the two cells;

For the inclusion coverage relationship, as shown in Figure 4, similar to the inclusion relationship, the probability of neighbor cell A in the handover measurement report of the UE residing in cell B tends to 100%, and the UE residing in cell A reports the measurement report The probability of the existence of neighboring cell B should tend to a certain fixed value Coverage, and the size of Coverage depends on the ratio of the overlapping coverage of the two cells;

For the adjacent coverage relationship, as shown in Figure 5, the probability that a UE residing in cell A reports a measurement report that exists in a neighboring cell B tends to a fixed value Coverage1, and a UE residing in cell B reports a measurement report that exists in A The probability of tends to a certain fixed value Coverage2; the size of Coverage1 and Coverage2 depends on the ratio of coverage overlap of the two cells.

Through the above analysis, if the definition covers the characteristic two-tuple:

Coverage characteristics <coverage rate of neighboring cell B in cell A, coverage rate of neighboring cell A in cell B>

then there is

Same coverage feature <approaching 100%, approaching 100%>

Included relation feature <approaching 100%, approaching Coverage>

Contains relational features <Approaching Coverage, Approaching 100%>

Adjacent relationship feature <approaching Coverage1, approaching Coverage2>

Therefore, in this example, the coverage relationship of each neighboring cell can be identified through the above coverage features. Still taking the above-mentioned local cell A and neighboring cell B as an example, this example may also include the step of setting the maximum threshold value of the coverage before the local cell A obtains the above-mentioned first coverage and second coverage. After A obtains the first coverage rate and the second coverage rate, compares the first coverage rate and the second coverage rate with the maximum coverage threshold value, and obtains the coverage relationship with neighboring cell B according to the comparison result, as follows:

The local cell A compares the first coverage rate and the second coverage rate with the maximum coverage threshold, and if both are greater than the maximum coverage threshold, it indicates that the coverage of the neighboring cell B in the local cell A is approaching At the same time, the coverage rate of the local cell A in the neighboring cell B is also close to 100%, so the coverage relationship between the local cell A and the neighboring cell B is the same coverage at this time.

The local cell A compares the first coverage rate and the second coverage rate with the maximum coverage threshold value, if the first coverage rate is greater than the maximum coverage rate threshold value, and the second coverage rate is less than the maximum coverage rate threshold value, then It indicates that the coverage rate of the neighboring cell B in the local cell A is close to 100%, and the coverage rate of the local cell A in the neighboring cell B is lower than the maximum coverage threshold, so at this time the local cell A and the neighboring cell The coverage relationship between B is the included coverage relationship, that is, the local cell A is included in the neighboring cell B.

The local cell A compares the first coverage rate and the second coverage rate with the maximum coverage threshold value, if the first coverage rate is less than the maximum coverage rate threshold value, and the second coverage rate is greater than the maximum coverage rate threshold value, then It indicates that the coverage rate of the neighboring cell B in the local cell A is lower than the maximum coverage threshold, and the coverage rate of the local cell A in the neighboring cell B is close to 100%. Therefore, at this time, the local cell A and the neighboring cell The coverage relationship between B is an inclusion coverage relationship, that is, the local cell A includes the neighboring cell B.

The local cell A compares the first coverage rate and the second coverage rate with the maximum coverage threshold value, if the first coverage rate is less than the maximum coverage rate threshold value, and the second coverage rate is also less than the maximum coverage rate threshold value, It indicates that the coverage of the neighboring cell B in the local cell A is lower than the maximum coverage threshold, and the coverage of the local cell A in the neighboring cell B is also lower than the maximum coverage threshold. Therefore, the local The coverage relationship between cell A and neighboring cell B is an adjacent coverage relationship, that is, the local cell A and neighboring cell B have areas that do not completely overlap.

In this example, after the local cell A obtains the coverage relationship with the neighboring cell B, it may also include updating the coverage relationship with the neighboring cell B according to the obtained coverage relationship, as follows:

The local cell A judges whether the current coverage relationship with the neighboring cell B is the same as the coverage relationship obtained by the local cell, and if not, updates it to the coverage relationship with the neighboring cell B obtained in the above steps.

At the same time, in this example, in order to further effectively obtain the coverage relationship between neighboring cells, the minimum coverage threshold can also be set to delete neighboring cells with low coverage, so as to ensure the reliability and practicability of the obtained neighboring cell coverage relationship. . Specifically, before the local cell A obtains the first coverage, the minimum threshold of coverage may be set, and after the local cell A obtains the first coverage, the obtained first coverage and the minimum coverage threshold may be compared. In comparison, if the coverage rate is less than the minimum threshold, the neighboring cell B is deleted, that is, the neighboring cell B is no longer the neighboring cell of the local cell A at this time.

In this example, the neighbor cell and the local cell are interchangeable, that is, when obtaining the coverage relationship of the neighbor cell of cell A, cell A is the local cell, and cell B is the neighbor cell of the local cell A; similarly, when When obtaining the coverage relationship of the neighboring cells of the cell B, the cell B is the local cell, and the cell A is the neighboring cell of the local cell B.

The present invention also provides a device for obtaining the coverage of adjacent cells, the device includes a statistical module for obtaining the coverage of adjacent cells according to the above method.

Further, the present invention also provides a system for obtaining the coverage relationship of adjacent cells (the system in this example can be used as a base station), please refer to FIG. 6, the system includes the above-mentioned device for obtaining coverage of adjacent cells, and It includes a transceiver device and a processing device connected to the device. The transceiver device is also connected to the processing device. The transceiver device is used to send the coverage obtained by the local cell and receive the coverage sent by the neighboring cell. The processing device is used to obtain the coverage relationship between the local cell and the neighboring cell according to the coverage obtained by the local cell and the coverage received from the neighboring cell, specifically as follows: the processing device combines the coverage of the local cell with the transmission and reception The coverage received by the device is compared with the set coverage maximum threshold, and the coverage relationship between the local cell and the neighboring cell is obtained according to the comparison result.

Further, the system in this example also includes a handover judging device connected to the above statistics device and a UE connected to the handover judging device, the handover judging device is used to judge whether the UE satisfies the handover condition, and if so, notifies the UE that it can upload the handover A measurement report, the handover measurement report at least includes the ID of the detected neighboring cell and the signal strength information of the neighboring cell. In this example, the UE uploads the handover measurement report to the base station at the edge of the cell. The base station selects one of the candidate cells included in the handover measurement report to perform handover.

Embodiment two

It can be seen from the above that the method, device and system provided by the present invention can use the measurement report reported by the UE in the cell to obtain the coverage rate of the adjacent cell, and then obtain the coverage relationship between the adjacent cells, and can automatically discover and optimize the same-frequency, different Frequency, different system neighbor cell coverage relation, the present invention will be further explained by taking automatic discovery and optimization of the same frequency, different frequency, and different system neighbor cell coverage relation as examples below:

Define the above-mentioned threshold values as follows:

Define the measurement report reporting threshold as MEAS_RPT_NUM_THRELD;

Define the neighbor cell signal quality threshold as CELL_RSRP_THRELD;

Define the high threshold of neighbor cell discovery probability as COVERAGE_HIGH;

Define the low threshold of neighbor cell discovery probability as COVERAGE_LOW;

Define the first count value as HO_FREQ_MEAS_RPT_COUNT;

Define the second count value as HO_NBR_MEASRPT_COUNT;

After receiving the measurement report uploaded by the UE at a certain frequency point, HO_FREQ_MEAS_RPT_COUNT is incremented by 1; if the measurement report includes the neighboring cell and the signal quality is greater than CELL_RSRP_THRELD, then HO_NBR_MEASRPT_COUNT is incremented by 1, otherwise HO_NBR_MEASRPT_COUNT remains unchanged;

When HO_FREQ_MEAS_RPT_COUNT is equal to MEAS_RPT_NUM_THRELD, stop statistics, and calculate coverage according to the above method;

Coverage = HO_NBR_MEASRPT_COUNT/HO_FREQ_MEAS_RPT_COUNT;

or Coverage=HO_NBR_MEASRPT_COUNT/MEAS_RPT_NUM_THRELD;

Calculate the coverage of adjacent two adjacent cells relative to each other according to the above method; if the coverage rate Coverage is greater than the COVERAGE_HIGH neighbor cell discovery probability high threshold, it is considered that the coverage rate is close to 100%, if the coverage rate Coverage is lower than COVERAGE_LOW, it can be Delete the neighbor. The present invention will be further described below by taking the automatic discovery and optimization of the same-frequency, different-frequency, and different-system neighbor cell coverage relationships as examples:

1. Take the example of adding the coverage relationship of LTE inter-frequency adjacent cells: Suppose there is cell A and cell B that are each other’s adjacent cells;

1. Initialize MEAS_RPT_NUM_THRELD=10000; CELL_RSRP_THRELD=-95db; HO_FREQ_MEAS_RPT_COUNT=0; HO_NBR_MEAS_RPT_COUNT=0; COVERAGE_HIGH=95%; COVERAGE_LOW=5%;

2. When the UE accesses the network, the base station sends the inter-frequency handover measurement configuration to the UE;

3. After the UE satisfies the handover conditions, the measurement report is sent to the base station, and the handover judgment device in the base station sends the measurement report to the device for obtaining the coverage of adjacent cells;

4. The device that obtains the coverage of the neighboring cell receives the measurement report, and adds 1 to HO_FREQ_MEAS_RPT_COUNT, and adds 1 to HO_NBR_MEAS_RPT_COUNT if the quality of the neighboring cell is greater than CELL_RSRP_THRELD;

5. After the device for obtaining the coverage of the neighboring cell finds that HO_FREQ_MEAS_RPT_COUNT is added to MEAS_RPT_NUM_THRELD, it calculates the probability of reporting by the neighboring cell according to the above method;

For example: HO_FREQ_MEAS_RPT_COUNT = 10000, HO_NBR_MEAS_RPT_COUNT = 9800, according to formula 1, Coverage = 98%, greater than COVERAGE_HIGH; coverage feature two-tuple: coverage feature < coverage of neighboring cell B in cell A, coverage of neighboring cell A in cell B >, the coverage rate of neighboring cell B in cell A is close to 100% (assuming that the coverage rate is the coverage rate of cell B in cell A);

6. If cell A and cell B are adjacent cells under the same base station, notify the peer cell through intra-base station communication of the probability that the peer cell is notified by this cell and be reported by the local cell; if the adjacent cells are adjacent cells under different base stations And there is no X2 port between the two base stations, notify the peer cell of the probability of being reported by this cell through the S1 port; if the neighboring cell is a neighboring cell under a different base station and there is an X2 port between the two base stations, notify the peer cell through the X2 port The probability of being reported by the community;

7. The opposite cell (that is, the neighboring cell B corresponding to the local cell A) calculates the coverage rate according to the local cell method, and sends the coverage rate to the local cell. If the reported ratio of the neighboring cell A in the cell B is 50%, Then cell A and cell B satisfy:

Included relationship feature <approaching 100%, 50%>, that is, the coverage of cell A is small, the coverage of cell B is large, cell A covers a part of cell B, and cell A is included in cell B;

8. Cell A judges whether the current coverage relationship with cell B is a contained coverage relationship, and if not, updates it to a contained coverage relationship.

2. Take the coverage relationship of adding LTE co-frequency adjacent cells as an example: Assume that cell A and cell B are adjacent cells of each other;

1. Initialize MEAS_RPT_NUM_THRELD=10000; CELL_RSRP_THRELD=-95db; HO_FREQ_MEAS_RPT_COUNT=0; HO_NBR_MEAS_RPT_COUNT=0; COVERAGE_HIGH=95%; COVERAGE_LOW=5%;

2. When the UE accesses the network, the base station sends the same-frequency handover measurement configuration to the UE;

3. After the UE satisfies the handover conditions, the measurement report is sent to the base station, and the handover judgment device in the base station sends the measurement report to the device for obtaining the coverage of adjacent cells;

4. The device that obtains the coverage of the neighboring cell receives the measurement report, and adds 1 to HO_FREQ_MEAS_RPT_COUNT, and adds 1 to HO_NBR_MEAS_RPT_COUNT if the quality of the neighboring cell is greater than CELL_RSRP_THRELD;

5. After the device for obtaining the coverage of the neighboring cell finds that HO_FREQ_MEAS_RPT_COUNT is added to MEAS_RPT_NUM_THRELD, it calculates the probability of reporting by the neighboring cell according to the above method;

For example: HO_FREQ_MEAS_RPT_COUNT = 10000, HO_NBR_MEAS_RPT_COUNT = 2000, according to formula 1, Coverage = 20%, less than COVERAGE_HIGH, greater than COVERAGE_LOW; coverage feature two-tuple:

Coverage characteristics <coverage rate of neighboring cell B in cell A, coverage rate of neighboring cell A in cell B>, the coverage rate of neighboring cell B in cell A is close to 20% (assuming that the coverage rate of cell B in cell A coverage in );

6. If cell A and cell B are adjacent cells under the same base station, notify the peer cell through intra-base station communication of the probability that the peer cell is notified by this cell and be reported by the local cell; if the adjacent cells are adjacent cells under different base stations And there is no X2 port between the two base stations, notify the peer cell of the probability of being reported by this cell through the S1 port; if the neighboring cell is a neighboring cell under a different base station and there is an X2 port between the two base stations, notify the peer cell through the X2 port The probability of being reported by the community;

7. The peer cell (that is, the neighbor cell B corresponding to the local cell A) calculates the coverage rate according to the local cell method, and sends the coverage rate to the local cell. If the proportion of the neighbor cell A reported in the cell B is 20%, Then cell A and cell B satisfy:

Adjacent coverage characteristics <approaching 20%, 20%>, that is, the overlapping coverage of cell A and cell B is 20%.

8. Cell A judges whether the current coverage relationship with cell B is an adjacent coverage relationship, and if not, updates it to an adjacent coverage relationship.

3. Take the example of adding the coverage relationship of inter-system UTRAN-FDD neighboring cells: Assume that LTE cell A and UTRAN-FDD cell B are each other’s neighboring cells;

1. Initialize MEAS_RPT_NUM_THRELD=10000; CELL_RSCP_THRELD=-95db; HO_FREQ_MEAS_RPT_COUNT=0; HO_NBR_MEAS_RPT_COUNT=0; COVERAGE_HIGH=95%; COVERAGE_LOW=5%; ;

2. The UE accesses the network, and the base station sends the inter-system handover measurement configuration to the UE;

3. After the UE satisfies the handover conditions, the measurement report is sent to the base station, and the handover judgment device in the base station sends the measurement report to the device for obtaining the coverage of adjacent cells;

4. The device that obtains the coverage of the neighboring cell receives the measurement report, and adds 1 to HO_FREQ_MEAS_RPT_COUNT, and adds 1 to HO_NBR_MEAS_RPT_COUNT if the quality of the neighboring cell is greater than CELL_RSCP_THRELD;

5. After the device for obtaining the coverage of the neighboring cell finds that HO_FREQ_MEAS_RPT_COUNT is added to MEAS_RPT_NUM_THRELD, it calculates the probability of reporting by the neighboring cell according to the above method;

For example: HO_FREQ_MEAS_RPT_COUNT = 10000, HO_NBR_MEAS_RPT_COUNT = 9800, according to formula 1, Coverage = 98%, greater than COVERAGE_HIGH; coverage feature two-tuple: coverage feature < coverage of neighboring cell B in cell A, coverage of neighboring cell A in cell B >, the coverage rate of neighboring cell B in cell A is close to 100% (assuming that the coverage rate is the coverage rate of cell B in cell A);

6. If cell A and cell B are adjacent cells under the same base station, notify the peer cell through communication within the base station of the probability that the peer cell will be reported by the cell; otherwise, notify the peer cell through S1 port to be reported by the cell The probability;

7. The opposite UTRAN-FDD cell calculates the coverage rate according to the method of the local LTE cell, and sends the coverage rate to the local cell. If the proportion of the reported neighbor cell A in cell B is 97%, then cell A and cell B satisfy: same Coverage relationship characteristics <approaching 100%, approaching 100%>, that is, cell A and cell B belong to the same coverage relationship;

8. Cell A judges whether the current coverage relationship with cell B is an adjacent coverage relationship, and if not, updates it to an adjacent coverage relationship.

In summary, the method, device and system provided by the present invention can automatically discover and optimize the coverage relationship of adjacent cells of the same frequency, different frequency, and different systems, without distinguishing between wireless access systems, and can determine whether LTE internal (TDD-LTE, FDD- LTE) and the coverage relationship between adjacent cells of various standards (UTRAN-TDD, UTRAN-FDD, CDMA-HRPD, CDMA-1xRTT, GERAN); and this example obtains the coverage rate of adjacent cells based on the measurement report uploaded by UE, shielding The complexity of the wireless system most truly reflects the coverage relationship between cells. It is simple to implement and does not require manual discovery and addition. It is simple to implement, high in efficiency, and can greatly reduce operating costs.

The above content is a further detailed description of the present invention in conjunction with specific embodiments, and it cannot be assumed that the specific implementation of the present invention is limited to these descriptions. For those of ordinary skill in the technical field of the present invention, without departing from the concept of the present invention, some simple deduction or replacement can be made, which should be regarded as belonging to the protection scope of the present invention.

Claims (13)

1. A method for obtaining neighborhood coverage, characterized in that it comprises: receiving a measurement report reported by the UE in the local cell at a certain frequency point, and obtaining the number of times the UE in the local cell reports the measurement report at the frequency point; Parse the reported measurement report to obtain the number of measurement reports that include the same neighboring cell in the reported measurement report; Set the measurement report reporting threshold value, and set the first count value used to count the number of UE uploaded measurement reports under the frequency point and the first count value used to count the number of measurement reports that include the neighboring cell under the frequency point Second count value; The UE in the local cell uploads a measurement report at the frequency point, the first count value is increased by 1, and at the same time, when it is determined that the measurement report includes the neighboring cell, the second count value is increased by 1; When the first count value is equal to the measurement report reporting threshold, divide the current second count value by the threshold value or by the current first count value to obtain the coverage rate. 2. The method according to claim 1, characterized in that, in the step of setting the reporting threshold of the measurement report, further comprising setting the signal quality threshold of the neighboring cell, when the neighboring cells included in the measurement report When the signal quality of the neighboring cell is greater than the signal quality threshold value of the neighboring cell, it is determined that the measurement report includes the neighboring cell; otherwise, it is determined that the measurement report does not include the neighboring cell. 3. The method according to claim 1 or 2, wherein the UE reports the measurement report according to a measurement configuration, the measurement configuration includes inter-frequency handover measurement configuration, same-frequency handover measurement configuration, inter-system handover measurement configuration. 4. The method according to claim 1 or 2, wherein the coverage refers to the actual coverage range between cells. 5. A method for obtaining the coverage relationship of adjacent cells, characterized in that it comprises: the local cell and the adjacent cells corresponding thereto obtain the coverage of the adjacent cells according to the method according to any one of claims 1-4 respectively. The first coverage rate in the local cell and the second coverage rate of the local cell in the neighboring cell; The coverage relationship between neighboring cells. 6. The method according to claim 5, wherein after the local cell obtains the first coverage rate, it further includes sending it to the neighboring cell; After the second coverage, it also includes sending it to the local cell. 7. The method according to claim 6, wherein after obtaining the coverage relationship between the local cell and the neighboring cell, further comprising: The local cell judges whether the current coverage relationship with the neighboring cell is the same as the coverage relationship obtained by the local cell, and if not, updates it to the coverage relationship obtained by the local cell. 8. The method according to claim 6 or 7, characterized in that, before the local cell obtains the first coverage and the second coverage, further comprising the step of setting a maximum coverage threshold, After the local cell obtains the first coverage rate and the second coverage rate, it further includes comparing the first coverage rate and the second coverage rate with the maximum threshold value, and according to the comparison result Obtain the coverage relationship with the neighbor cell. 9 . The method according to claim 8 , wherein the coverage relationship includes the same coverage relationship, the inclusion coverage relationship, the contained coverage relationship and the adjacent relationship. 10. The method according to any one of claims 5-7, characterized in that, before the local cell obtains the first coverage, it also includes the step of setting the minimum threshold of coverage, and the local cell obtains After the first coverage, it also includes comparing the obtained first coverage with the coverage minimum threshold, and if the coverage is smaller than the coverage minimum threshold, then deleting the neighboring cell. 11. A device for obtaining the coverage of neighboring cells, characterized by comprising a statistical processing module, the statistical processing module is used to obtain the coverage according to the method according to any one of claims 1-4. 12. A system for obtaining the coverage relationship of neighboring cells, characterized in that it comprises the device for obtaining the coverage of neighboring cells as claimed in claim 11, and also includes a transceiver device and a processing device connected to the device, the transceiver device Also connected to the processing device, the transceiver device is used to send the coverage obtained by the local cell and receive the coverage sent by the neighboring cell, and the processing device is used to obtain the coverage according to the coverage obtained by the local cell and the received coverage The coverage rate sent by the neighbor cell obtains the coverage relationship between the local cell and the neighbor cell. 13. The system according to claim 12, wherein the processing device obtains the coverage between the local cell and the neighboring cell according to the coverage obtained by the local cell and the coverage received from the neighboring cell Relationships include: The processing device compares the coverage of the local cell and the coverage received by the transceiver device with the set coverage maximum threshold, and obtains the coverage relationship between the local cell and the neighboring cell according to the comparison result .