CN108259094B - A method and device for optimizing uplink interference in LTE network - Google Patents

Abstract

The invention discloses an LTE network uplink interference optimization method and device. The method includes: acquiring MRs of each preset neighboring cell of a target cell; screening out each first MR based on the acquired preset screening parameters carried in each MR; Each preset area corresponding to each preset adjacent area and preset power parameters carried by each first MR determine the target interference area and each second MR corresponding to the target interference area; based on the target interference area and the preset power parameters carried by each second MR. Set power parameters to optimize the uplink interference of the target cell. The present invention determines the area that causes the greatest interference to the uplink of the target cell by analyzing the MRs of the adjacent cells of the target cell, and optimizes the uplink interference of the target cell based on the MR corresponding to the area, without signaling interaction between cells , to solve the problem that the prior art requires signaling interaction between cells, which affects the use of frequency resources.

Description

A method and device for optimizing uplink interference in LTE network

technical field

The present invention relates to the field of communication technologies, and in particular, to a method and device for optimizing uplink interference in an LTE network.

Background technique

Long Term Evolution (Long Term Evolution, LTE) network uplink interference is mainly: the uplink noise floor of the interfered cell caused by the user equipment (User Equipment, UE) in the adjacent area of the interfered cell. ). The degree of interference is related to factors such as uplink traffic volume of adjacent cells, UE distribution, and network structure.

The 3rd Generation Partnership Project (3GPP) organization has proposed a variety of interference suppression and elimination technologies for the uplink interference of the LTE network.

In the LTE protocol version Release 8, 3GPP proposed the Inter-Cell Interference Coordination (ICIC) technology. The ICIC technology mainly reduces the problem of inter-cell traffic channel interference by coordinating resource scheduling and allocation in the frequency domain.

In the LTE protocol version Release 10, 3GPP proposed the enhanced Inter-Cell Interference Coordination (eICIC) technology. The eICIC technology mainly refers to the Almost Blank Sub-frame (ABS) technology in the time domain. Coordinate resource scheduling and allocation in the time domain to reduce inter-cell control channel interference.

In the LTE protocol version Release 11, 3GPP proposed to further enhance the inter-cell interference coordination (FeICIC, Further enhancements to non-carrier aggregation based eICIC) technology, mainly including enhanced ABS transmit signal processing and reduced power ABS technology.

In the LTE protocol version Release 12, 3GPP proposed a Network-Assisted Interference Cancellation and Suppression (NAICS) technology. NAICS technology belongs to advanced receiver (Advanced Receivers) technology, mainly for physical downlink shared channel (Physical Downlink Shared Channel, PDSCH) interference. the purpose of regional interference.

Each of the above interference suppression and elimination technologies requires signaling interaction between cells, which limits the degree of freedom of frequency resource use to a certain extent and reduces the efficiency of frequency resource use. In addition, the uplink interference of LTE network also includes: GPS out-of-sync interference (Scenario shown in Figure 2) and long-distance co-channel interference caused by atmospheric waveguide effect (Scenario shown in Figure 3), it can be seen that due to the complexity of uplink interference in LTE network, the above interference suppression and elimination techniques are also difficult to achieve expected effect. More importantly, with the continuous increase of LTE users, the traffic volume will continue to rise, and the degree of uplink interference of the LTE network will further increase. Therefore, an optimization method for the uplink interference of the LTE network is urgently needed to ensure the operation quality of the LTE network.

SUMMARY OF THE INVENTION

In view of the above problems, the present invention proposes an LTE network uplink interference optimization method and device to overcome the above problems or at least partially solve the above problems.

In a first aspect, the present invention provides a method for optimizing uplink interference in an LTE network, including:

Acquiring measurement reports MR of each preset neighboring cell of the target cell; the target cell is a cell to be optimized for uplink interference;

Screening out each first MR based on the acquired preset screening parameters carried in each MR;

Determine the target interference area and each second MR corresponding to the target interference area based on the preset areas corresponding to the preset neighboring cells and the preset power parameters carried by the first MRs; the target interference area cause the greatest interference to the target cell;

Based on the target interference area and preset power parameters carried by the second MRs, the uplink interference of the target cell is optimized.

Optionally, based on the acquired preset screening parameters carried in each MR, each first MR is screened, including:

Based on the obtained adjacent physical cell identifier PCI carried in each MR, a first screening is performed to obtain a first screening set; the first screening set is a set formed by each MR whose adjacent cell PCI is the same as the target cell PCI;

Based on the serving cell carrier frequency Earfcn carried by each MR in the first screening set, a second screening is performed on each MR in the first screening set to obtain a second screening set; the second screening set is the serving cell Earfcn a set composed of MRs that have co-channel interference with the target cell Earfcn;

Based on the number of physical resource blocks (PRBs) occupied by the physical uplink shared channel PUSCH carried by each MR in the second screening set, perform a third screening on each MR in the second screening set to obtain the first MRs; the first MRs are obtained; The number of PRBs occupied by the PUSCH carried by the first MR is non-zero.

Optionally, the target interference area and each second MR corresponding to the target interference area are determined based on each preset area corresponding to each of the preset neighboring cells and the preset power parameter carried by each of the first MRs, including: :

Determine each first MR corresponding to each preset area based on the longitude and latitude information of each preset area corresponding to each preset neighbor area and the longitude and latitude information of each first MR;

determining, based on preset power parameters carried by the first MRs corresponding to the preset areas, the sum of the interference powers of the first MRs corresponding to the preset areas to the target cell;

The area corresponding to the maximum interference power sum and each first MR corresponding to this area are respectively determined as the target interference area and each second MR corresponding to the target interference area.

Optionally, determining the sum of the interference powers of the first MRs corresponding to the preset areas to the target cell based on preset power parameters carried by the first MRs corresponding to the preset areas, include:

determining, based on the neighbor cell reference signal received power RSRP carried by each first MR corresponding to each preset area, a link loss L from each first MR corresponding to each preset area to the target cell;

determining, based on the UE transmit power headroom carried by each first MR corresponding to each preset area, the transmit power P consumed by each first MR corresponding to each preset area;

Based on the link loss L and the transmit power P, the sum of the interference power of the first MRs corresponding to the preset regions to the target cell is determined.

Optionally, optimizing the uplink interference of the target cell based on the target interference area and preset power parameters carried by the second MRs includes:

determining the difference between the RSRP of the serving cell and the RSRP of the neighboring cell carried by the second MRs;

Counting the first proportion of the differences that are greater than the preset first optimization threshold among the differences, and counting the first proportion of the differences that are within the range formed by the first optimization threshold and the second optimization threshold among the differences. Two proportions, and a third proportion of the differences that are less than the second optimization threshold among the statistical differences; wherein the first optimization threshold is greater than the second optimization threshold;

If the first ratio is greater than the first preset ratio, generating first optimization information for instructing to expand the capacity of the cell where the target interference area is located, and the expanded capacity is the preset capacity;

If the second ratio is greater than the second preset ratio, generating second optimization information for instructing to adjust the base station antenna of the target cell and the adjusted angle is a preset angle;

If the third ratio is greater than a third preset ratio, generate third optimization information for instructing to adjust the handover threshold and reselection threshold of the target cell, so that the handover threshold and reselection threshold of the target cell are adjusted. The thresholds are respectively higher than the handover threshold and the reselection threshold of the cell where the target interference area is located.

In a second aspect, the present invention also proposes an LTE network uplink interference optimization device, including:

an acquisition unit, configured to acquire measurement reports MR of each preset neighboring cell of a target cell; the target cell is a cell to be optimized for uplink interference;

a screening unit, configured to screen out each first MR based on the acquired preset screening parameters carried in each MR;

a determining unit, configured to determine a target interference area and each second MR corresponding to the target interference area based on each preset area corresponding to the each preset neighbor cell and the preset power parameter carried by the each first MR; The target interference area causes the greatest interference to the target cell;

An optimization unit, configured to optimize the uplink interference of the target cell based on the target interference area and preset power parameters carried by the second MRs.

Optionally, the screening unit includes:

a first screening subunit, configured to perform a first screening based on the acquired adjacent physical cell identifier PCI carried in each MR to obtain a first screening set; the first screening set is the adjacent cell PCI and the target cell PCI A set of the same MRs;

The second screening subunit is configured to perform a second screening on each MR in the first screening set based on the serving cell carrier frequency Earfcn carried by each MR in the first screening set to obtain a second screening set; the The second screening set is a set composed of MRs that have co-channel interference between the serving cell Earfcn and the target cell Earfcn;

The third screening subunit is configured to perform a third screening on each MR in the second screening set based on the number of physical resource blocks occupied by the physical uplink shared channel PUSCH carried by each MR in the second screening set, to obtain the Each first MR; the number of PRBs occupied by the PUSCH carried by the first MR is non-zero.

Optionally, the determining unit includes:

a first determining subunit, configured to determine each first MR corresponding to each preset area based on the longitude and latitude information of each preset area corresponding to each preset neighbor area and the longitude and latitude information of each first MR;

The second determination subunit is configured to determine, based on the preset power parameters carried by the first MRs corresponding to the preset areas, the difference between the interference powers of the first MRs corresponding to the preset areas to the target cell and;

The third determination subunit is configured to determine the area corresponding to the maximum interference power sum and each first MR corresponding to the area as the target interference area and each second MR corresponding to the target interference area, respectively.

Optionally, the second determination subunit is specifically used for:

determining, based on the neighbor cell reference signal received power RSRP carried by each first MR corresponding to each preset area, a link loss L from each first MR corresponding to each preset area to the target cell;

determining, based on the UE transmit power headroom carried by each first MR corresponding to each preset area, the transmit power P consumed by each first MR corresponding to each preset area;

Based on the link loss L and the transmit power P, the sum of the interference power of the first MRs corresponding to the preset regions to the target cell is determined.

Optionally, the optimization unit is specifically used for:

determining the difference between the RSRP of the serving cell and the RSRP of the neighboring cell carried by the second MRs;

Counting the first proportion of the differences that are greater than the preset first optimization threshold among the differences, and counting the first proportion of the differences that are within the range formed by the first optimization threshold and the second optimization threshold among the differences. Two proportions, and a third proportion of the differences that are less than the second optimization threshold among the statistical differences; wherein the first optimization threshold is greater than the second optimization threshold;

If the first ratio is greater than the first preset ratio, generating first optimization information for instructing to expand the capacity of the cell where the target interference area is located, and the expanded capacity is the preset capacity;

If the second ratio is greater than the second preset ratio, generating second optimization information for instructing to adjust the base station antenna of the target cell and the adjusted angle is a preset angle;

If the third ratio is greater than a third preset ratio, generate third optimization information for instructing to adjust the handover threshold and reselection threshold of the target cell, so that the handover threshold and reselection threshold of the target cell are adjusted. The thresholds are respectively higher than the handover threshold and the reselection threshold of the cell where the target interference area is located.

The method and device for optimizing the uplink interference of the LTE network proposed by the present invention, after determining the target cell that is interfered by the uplink of the LTE network, by analyzing the MRs of the adjacent cells of the target cell, the area that causes the greatest interference to the uplink of the target cell is determined, And based on the power-related information carried by the MR corresponding to the area, the uplink interference of the target cell is optimized, no signaling interaction between cells is required, and the upgrade of network functions or the adoption of new technologies is not involved. It requires signaling interaction between cells to limit the degree of freedom of frequency resource use and reduce the use efficiency of frequency resources.

Description of drawings

1 is a schematic diagram of a scenario in which the uplink interference of the LTE network in the prior art is that the uplink noise floor of the interfered cell is raised due to the adjacent UE of the interfered cell sending an uplink signal;

2 is a schematic diagram of a scenario in which LTE network uplink interference is GPS out-of-sync interference in the prior art;

Fig. 3 is the scene schematic diagram of the long-distance co-channel interference caused by the atmospheric waveguide effect in the LTE network uplink interference in the prior art;

4 is a flowchart of a method for optimizing uplink interference in an LTE network provided by the first embodiment of the present invention;

5 is a schematic structural diagram of an apparatus for optimizing uplink interference in an LTE network according to a second embodiment of the present invention;

FIG. 6 is a schematic structural diagram of an apparatus for optimizing uplink interference in an LTE network according to a third embodiment of the present invention.

Detailed ways

In order to make the purposes, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly described below with reference to the drawings in the embodiments of the present invention. Obviously, the described embodiments are the Some, but not all, embodiments are disclosed.

It should be noted that, in this document, relational terms such as "first" and "second" are only used to distinguish the same names, rather than implying the relationship or order between these names.

The LTE network adopts the same-frequency networking technology and is a self-interference communication system. Since the LTE network uplink adopts the Single-carrier Frequency-Division Multiple Access (SC-FDMA) technology, there is no UE in the same cell. Interference. However, the uplink signal sent by the UE in the neighboring cell of the LTE network will cause interference to the uplink of the cell and affect the performance of the LTE network, as shown in Figure 1:

The uplink signals sent by UE3 and UE4 in time division LTE (TD-LTE) cell 2 will cause interference to TD-LTE cell 1; the uplink signals sent by UE2 in TD-LTE cell 1 will cause interference to TD-LTE cell 2 (due to UE1 is far away from the base station of TD-LTE cell 2, and the interference can be ignored).

As shown in FIG. 4 , this embodiment discloses a method for optimizing uplink interference in an LTE network. The execution body of the method may be the network management system of each communication operator, or may be a device set in the network management system, and the method may include the following Steps 401 to 404:

401. Acquire a measurement report (Measurement Report, MR) of each preset neighboring cell of a target cell, where the target cell is a cell to be optimized for uplink interference.

In this embodiment, after determining the target cell that is interfered by the uplink of the LTE network, each preset neighbor cell of the target cell may be determined, and the determination method may adopt the existing technology (for example, through the industrial parameter determination), which will not be detailed in this embodiment. described. The measurement report of each preset neighbor cell is measured and reported by user equipment (User Equipment, UE) in each preset neighbor cell.

402. Screen out each first MR based on the acquired preset screening parameters carried in each MR.

In this embodiment, the MR carries a variety of information, such as the UE transmit power headroom, the adjacent cell physical cell identifier (Physical Cell Identifier, PCI) measured by the UE, the adjacent cell carrier frequency Earfcn measured by the UE, and the UE measurement The arriving serving cell carrier frequency Earfcn, the serving cell PCI measured by the UE, the neighboring cell reference signal receiving power (Reference Signal Receiving Power, RSRP) measured by the UE, the serving cell RSRP measured by the UE, and the Physical Uplink Shared Channel (Physical Uplink Shared Channel) The number of Physical Resource Blocks (PRBs) occupied by Uplink Shared Channel (PUSCH), the base station (eNB) antenna angle of arrival (AoA) of the serving cell, and the timing advance (TA) of the serving cell, etc. .

In this embodiment, the preset screening parameters carried in the MR are parameters related to the target cell, and the preset screening parameters include: the neighboring cell PCI, the serving cell Earfcn, and the number of PRBs occupied by the PUSCH.

In this embodiment, each first MR is an MR that may cause uplink interference to the target cell, that is, that the UE sends the first MR may cause uplink interference to the target cell.

403. Determine a target interference area and each second MR corresponding to the target interference area based on each preset area corresponding to the each preset neighbor cell and the preset power parameter carried by the each first MR; the target The interference area causes the greatest interference to the target cell.

In this embodiment, each preset area corresponding to each preset neighbor area, that is, the coverage area of each neighbor area, is pre-rasterized, for example, the coverage area of each neighbor area is divided into multiple grids , the size of each grid can choose a fixed value (such as a range of 50 meters × 50 meters), or you can choose a non-fixed value, that is, the size of each grid is different; of course, the coverage of each neighboring area can also be divided for a grid.

In this embodiment, after pre-rasterizing the coverage area of each neighboring area, one or more grids corresponding to each preset neighboring area, that is, each preset neighboring area corresponds to one or more preset areas , and at the same time, the latitude and longitude coordinate range of each area is also determined.

In this embodiment, the preset power parameters carried by the MR include: neighboring cell RSRP and UE transmit power headroom.

404. Optimize the uplink interference of the target cell based on the target interference area and preset power parameters carried by the second MRs.

It can be seen that, in the method for optimizing the uplink interference of the LTE network disclosed in this embodiment, after determining the target cell where the uplink of the LTE network is interfered, the MR of the adjacent cells of the target cell is analyzed to determine the area that causes the greatest interference to the uplink of the target cell , and optimizes the uplink interference of the target cell based on the power-related information carried by the MR corresponding to the area, does not require signaling interaction between cells, does not involve the upgrade of network functions or the adoption of new technologies, and solves the problem of existing The technology requires signaling interaction between cells, which limits the degree of freedom of frequency resource usage and reduces the efficiency of frequency resource usage.

Further, the LTE network uplink interference optimization method disclosed in this embodiment controls the LTE network uplink interference to an acceptable level (determined according to the actual situation), and ensures the operation quality of the LTE network.

In a specific example, in step 402, each first MR is screened out based on the acquired preset screening parameters carried in each MR, which specifically includes the following steps 4021 to 4023 not shown in FIG. 4:

4021. Perform a first screening based on the acquired adjacent physical cell identifier PCI carried in each MR, to obtain a first screening set; the first screening set is composed of each MR whose adjacent cell PCI is the same as the target cell PCI. gather.

4022. Based on the serving cell carrier frequency Earfcn carried by each MR in the first screening set, perform a second screening on each MR in the first screening set to obtain a second screening set; the second screening set is a service The cell Earfcn and the target cell Earfcn are a set of MRs that have co-channel interference.

In this embodiment, the second screening set is a set of MRs that may have co-channel interference between the serving cell Earfcn and the target cell Earfcn. The possible co-channel interference is as follows: the serving cell Earfcn and the target cell The Earfcn is the same, or the Earfcn of the serving cell is different from the Earfcn of the target cell, but according to the system bandwidth configuration, it is calculated that the serving cell and the target cell have frequency overlap.

4023. Based on the number of physical resource blocks (PRBs) occupied by the physical uplink shared channel PUSCH carried by each MR in the second screening set, perform a third screening on each MR in the second screening set to obtain the first MRs; The number of PRBs occupied by the PUSCH carried by each first MR is non-zero.

In this embodiment, considering that if the number of PRBs occupied by PUSCH is non-zero, it means that uplink data is sent, which may cause interference to the target cell. Therefore, based on the number of PRBs occupied by PUSCH carried by each MR in the second screening set, A third screening is performed on each MR in the second screening set to obtain each of the first MRs.

In a specific example, in step 403, the target interference area and the corresponding target interference area are determined based on the preset areas corresponding to the preset neighbor cells and the preset power parameters carried by the first MRs. Each second MR of , specifically includes the following steps 4031 to 4033 not shown in FIG. 4 :

4031. Determine each first MR corresponding to each preset area based on the longitude and latitude information of each preset area corresponding to each preset neighbor area and the longitude and latitude information of each first MR.

In this embodiment, the latitude and longitude information of each first MR may be determined based on information such as the location of the cell base station to which the UE that reports each first MR belongs, and the signal strength measured by the UE. The embodiments are not repeated here.

4032. Based on the preset power parameters carried by the first MRs corresponding to the preset areas, determine the sum of the interference powers of the first MRs corresponding to the preset areas to the target cell.

4033. Determine the area corresponding to the maximum interference power sum and each first MR corresponding to the area as the target interference area and each second MR corresponding to the target interference area, respectively.

In a specific example, step 4032 determines, based on the preset power parameters carried by the first MRs corresponding to the preset areas, the power of the first MRs corresponding to the preset areas to the target cell. The sum of the interference power specifically includes the following steps A to C:

A. Based on the adjacent cell reference signal received power RSRP carried by each first MR corresponding to each preset area, determine the link loss L from each first MR corresponding to each preset area to the target cell, unit : dB.

In this embodiment, the link loss L from each first MR to the target cell is equal to the pre-configured reference signal transmit power of the target cell minus the neighboring cell RSRP carried by each first MR.

B. Based on the UE transmit power headroom carried by each first MR corresponding to each preset area, determine the transmit power P consumed by each first MR corresponding to each preset area, unit: dB.

In this embodiment, the transmit power P consumed by each first MR=the preset maximum transmit power of the UE minus the UE transmit power headroom.

C. Based on the link loss L and the transmit power P, determine the sum of the interference power of each first MR corresponding to the each preset area to the target cell.

In this embodiment, the interference power of each first MR to the target cell is the transmit power P consumed by each first MR minus the link loss L from each first MR to the target cell.

In a specific example, in step 404, the uplink interference of the target cell is optimized based on the target interference area and the preset power parameters carried by the second MRs, which specifically includes not shown in FIG. 4 . The following steps 4041 to 4045:

4041. Determine the difference between the RSRP of the serving cell and the RSRP of the neighboring cell carried by the second MRs, unit: dB.

4042. Count the first proportion of the differences that are greater than the preset first optimization threshold among the differences, and count the differences within the range formed by the first optimization threshold and the preset second optimization threshold among the differences. the second proportion occupied, and the third proportion occupied by the difference values less than the preset second optimization threshold among the statistical differences; wherein the first optimization threshold is greater than the preset second optimization threshold.

In this embodiment, the preset first optimization threshold is, for example, 6 dB, the preset second optimization threshold is, for example, 0 dB, the first ratio is, for example, 95%, and the second ratio is, for example, any value between 20% and 30%. The third ratio is, for example, 10%.

It should be noted that the above numerical values are only examples, and those skilled in the art can set specific values according to actual conditions.

4043. If the first ratio is greater than the first preset ratio, generate first optimization information, which is used to instruct to expand the capacity of the cell where the target interference area is located, and the expanded capacity is the preset capacity.

In this embodiment, if the first ratio is greater than the first preset ratio, it means that the uplink interference of the target cell is mainly caused by the large uplink traffic of the cell where the target interference area is located. Therefore, in this embodiment, the first Optimization information, which is used to instruct to expand the cell where the target interference area is located and the expansion capacity is a preset capacity, such as adding a carrier, and the staff can perform optimization based on the first optimization information to reduce co-channel interference .

4044. If the second ratio is greater than a second preset ratio, generate second optimization information for instructing to adjust the base station antenna of the target cell and the adjusted angle is a preset angle.

In this embodiment, if the first ratio is greater than the first preset ratio, it means that the uplink interference of the target cell is mainly caused by the unreasonable network structure of the target cell. Therefore, in this embodiment, the second optimization information is generated to indicate that the base station antenna of the target cell is adjusted and the adjusted angle is a preset angle, for example, the azimuth angle (that is, the horizontal direction) of the base station antenna is adjusted by 15° , or the downlink angle (vertical direction) of the base station antenna is adjusted by 5°.

It should be noted that the above numerical values are only examples, and those skilled in the art can set specific values according to actual conditions.

4045. If the third ratio is greater than a third preset ratio, generate third optimization information for instructing to adjust the handover threshold and reselection threshold of the target cell, so that the handover threshold of the target cell and the reselection threshold are adjusted. The reselection threshold is higher than the handover threshold and the reselection threshold of the cell where the target interference area is located, respectively.

In this embodiment, if the third ratio is greater than the third preset ratio, it means that the uplink interference of the target cell is mainly caused by the unreasonable setting of the handover threshold and the reselection threshold of the target cell. Therefore, in this embodiment, the generation of the third The third optimization information is used to instruct the adjustment of the handover threshold and the reselection threshold of the target cell, so that the handover threshold and the reselection threshold of the target cell are respectively higher than the handover threshold and the reselection threshold of the cell where the target interference area is located. The threshold is chosen, eg, 3dB higher, to reduce the probability of high-interfering UEs in neighboring cells. The unit of each threshold is dB.

It can be seen that, in the method for optimizing the uplink interference of the LTE network disclosed in this embodiment, after determining the target cell where the uplink of the LTE network is interfered, the MR of the adjacent cells of the target cell is analyzed to determine the area that causes the greatest interference to the uplink of the target cell , and optimize the uplink interference of the target cell based on the power-related information carried by the MR corresponding to the area. The signaling interaction between cells does not involve the upgrade of network functions or the adoption of new technologies, which solves the problem of the prior art requiring signaling interaction between cells, limiting the degree of freedom of frequency resource use, and reducing the efficiency of frequency resource use.

As shown in FIG. 5 , this embodiment discloses an LTE network uplink interference optimization device, which can be set in a network management system of a communication operator or a network management system, and the device can include the following units: an acquisition unit 51 , a screening unit 52 , the determination unit 53 and the optimization unit 54, each unit is specifically described as follows:

an obtaining unit 51, configured to obtain measurement reports MR of each preset neighboring cell of a target cell; the target cell is a cell to be optimized for uplink interference;

A screening unit 52, configured to screen out each first MR based on the acquired preset screening parameters carried in each MR;

A determination unit 53, configured to determine a target interference area and each second MR corresponding to the target interference area based on each preset area corresponding to the each preset adjacent area and the preset power parameter carried by the each first MR ; The interference that the target interference area produces to the target cell is the largest;

The optimization unit 54 is configured to optimize the uplink interference of the target cell based on the target interference area and preset power parameters carried by the second MRs.

The apparatus disclosed in this embodiment can implement the method flow shown in FIG. 1 . Therefore, for the effect and description of the apparatus in this embodiment, reference may be made to the method embodiment shown in FIG. 1 , which will not be repeated here.

In a specific example, the screening unit 52 may include the following units not shown in FIG. 5 : a first screening sub-unit 521 , a second screening sub-unit 522 and a third screening sub-unit 523 , each of which will be described in detail. as follows:

The first screening subunit 521 is configured to perform a first screening based on the acquired adjacent physical cell identifier PCI carried in each MR to obtain a first screening set; the first screening set is the adjacent cell PCI and the target cell A set of MRs with the same PCI;

The second screening subunit 522 is configured to perform a second screening on each MR in the first screening set based on the serving cell carrier frequency Earfcn carried by each MR in the first screening set to obtain a second screening set; The second screening set is a set formed by each MR that has co-channel interference between the serving cell Earfcn and the target cell Earfcn;

The third screening subunit 523 is configured to perform a third screening on each MR in the second screening set based on the number of PRBs occupied by the physical uplink shared channel PUSCH carried by each MR in the second screening set, to obtain the the first MRs; the number of PRBs occupied by the PUSCH carried by the first MRs is non-zero.

In a specific example, the determining unit 53 specifically includes the following units not shown in FIG. 5 : a first determining subunit 531 , a second determining subunit 532 and a third determining subunit 533 , and each unit is described in detail. as follows:

The first determination subunit 531 is configured to determine each first MR corresponding to each preset area based on the longitude and latitude information of each preset area corresponding to each preset neighbor area and the longitude and latitude information of each first MR ;

The second determination subunit 532 is configured to determine, based on the preset power parameters carried by the first MRs corresponding to the preset areas, the interference power of the first MRs corresponding to the preset areas to the target cell Sum;

The third determination subunit 533 is configured to determine the area corresponding to the maximum interference power sum and each first MR corresponding to the area as the target interference area and each second MR corresponding to the target interference area, respectively.

In a specific example, the second determining subunit 532 is specifically used for:

determining, based on the neighbor cell reference signal received power RSRP carried by each first MR corresponding to each preset area, a link loss L from each first MR corresponding to each preset area to the target cell;

determining, based on the UE transmit power headroom carried by each first MR corresponding to each preset area, the transmit power P consumed by each first MR corresponding to each preset area;

Based on the link loss L and the transmit power P, the sum of the interference power of the first MRs corresponding to the preset regions to the target cell is determined.

In a specific example, the optimization unit 54 is specifically used for:

determining the difference between the RSRP of the serving cell and the RSRP of the neighboring cell carried by the second MRs;

Counting the first proportion of the differences that are greater than the preset first optimization threshold among the differences, and counting the differences within the range formed by the first optimization threshold and the preset second optimization threshold among the differences. The second ratio of , and the third ratio of the differences that are less than the preset second optimization threshold among the statistical differences; wherein the first optimization threshold is greater than the preset second optimization threshold;

If the first ratio is greater than the first preset ratio, generating first optimization information for instructing to expand the capacity of the cell where the target interference area is located, and the expanded capacity is the preset capacity;

If the second ratio is greater than the second preset ratio, generating second optimization information for instructing to adjust the base station antenna of the target cell and the adjusted angle is a preset angle;

If the third ratio is greater than a third preset ratio, generate third optimization information for instructing to adjust the handover threshold and reselection threshold of the target cell, so that the handover threshold and reselection threshold of the target cell are adjusted. The thresholds are respectively higher than the handover threshold and the reselection threshold of the cell where the target interference area is located.

It can be seen that, the LTE network uplink interference optimization device disclosed in the embodiment, after determining the target cell whose uplink is interfered by the LTE network, analyzes the MRs of the adjacent cells of the target cell to determine the area that causes the greatest interference to the uplink of the target cell, And based on the power-related information carried by the MR corresponding to the area, the uplink interference of the target cell is optimized, no signaling interaction between cells is required, and the upgrade of network functions or the adoption of new technologies is not involved. It requires signaling interaction between cells to limit the degree of freedom of frequency resource use and reduce the use efficiency of frequency resources.

Further, the LTE network uplink interference optimization apparatus disclosed in the embodiment controls the LTE network uplink interference to an acceptable level (determined according to the actual situation), and ensures the operation quality of the LTE network.

FIG. 6 is a block diagram showing the structure of the apparatus for optimizing uplink interference in the LTE network shown in FIG. 5 .

6, the LTE network uplink interference optimization device includes: a processor (processor) 601, a memory (memory) 602, a communications interface (Communications Interface) 603 and a bus 604;

in,

The processor 601, the memory 602, and the communication interface 603 communicate with each other through the bus 604;

The communication interface 603 is used for information transmission between external devices; in this embodiment, the external devices are, for example, base stations of each cell;

The processor 601 is configured to call program instructions in the memory 602 to execute the methods provided by the various method embodiments related to FIG. 1 , for example, including:

Acquiring measurement reports MR of each preset neighboring cell of the target cell; the target cell is a cell to be optimized for uplink interference;

Screening out each first MR based on the acquired preset screening parameters carried in each MR;

Determine the target interference area and each second MR corresponding to the target interference area based on the preset areas corresponding to the preset neighboring cells and the preset power parameters carried by the first MRs; the target interference area cause the greatest interference to the target cell;

Based on the target interference area and preset power parameters carried by the second MRs, the uplink interference of the target cell is optimized.

This embodiment discloses a computer program product, the computer program product includes a computer program stored on a non-transitory computer-readable storage medium, the computer program includes program instructions, and when the program instructions are executed by a computer, the computer program The methods provided by the various method embodiments related to FIG. 1 can be performed, for example, including:

Acquiring measurement reports MR of each preset neighboring cell of the target cell; the target cell is a cell to be optimized for uplink interference;

Screening out each first MR based on the acquired preset screening parameters carried in each MR;

Determine the target interference area and each second MR corresponding to the target interference area based on the preset areas corresponding to the preset neighboring cells and the preset power parameters carried by the first MRs; the target interference area cause the greatest interference to the target cell;

Based on the target interference area and preset power parameters carried by the second MRs, the uplink interference of the target cell is optimized.

This embodiment provides a non-transitory computer-readable storage medium, where the non-transitory computer-readable storage medium stores computer instructions, and the computer instructions cause the computer to execute the methods provided by the various method embodiments related to FIG. 1 . , for example including:

Acquiring measurement reports MR of each preset neighboring cell of the target cell; the target cell is a cell to be optimized for uplink interference;

Screening out each first MR based on the acquired preset screening parameters carried in each MR;

Determine the target interference area and each second MR corresponding to the target interference area based on the preset areas corresponding to the preset neighboring cells and the preset power parameters carried by the first MRs; the target interference area cause the greatest interference to the target cell;

Based on the target interference area and preset power parameters carried by the second MRs, the uplink interference of the target cell is optimized.

Those of ordinary skill in the art can understand that: implementing all or part of the steps of the method provided by the various method embodiments related to FIG. 1 can be completed by program instructions related to hardware, and the aforementioned program can be stored in a computer-readable storage medium. , when the program is executed, it executes the steps including the above method embodiments; and the aforementioned storage medium includes: ROM, RAM, magnetic disk or optical disk and other media that can store program codes.

The server and other embodiments described above are only illustrative, wherein the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, Located in one place, or it can be distributed over multiple network elements. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution in this embodiment. Those of ordinary skill in the art can understand and implement it without creative effort.

From the description of the above embodiments, those skilled in the art can clearly understand that each embodiment can be implemented by means of software plus a necessary general hardware platform, and certainly can also be implemented by hardware. Based on this understanding, the above-mentioned technical solutions can be embodied in the form of software products in essence or the parts that make contributions to the prior art, and the computer software products can be stored in computer-readable storage media, such as ROM/RAM, magnetic A disc, an optical disc, etc., includes several instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to perform the methods described in various embodiments or some parts of the embodiments.

Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the embodiments of the present invention, but not to limit them; although the embodiments of the present invention have been described in detail with reference to the foregoing embodiments, ordinary The skilled person should understand that it is still possible to modify the technical solutions described in the foregoing embodiments, or to perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the present invention. The scope of the technical solutions of the embodiments of each embodiment.

Claims (6)

1. an LTE network uplink interference optimization method, is characterized in that, comprises: Acquiring measurement reports MR of each preset neighboring cell of the target cell; the target cell is a cell to be optimized for uplink interference; Screening out each first MR based on the acquired preset screening parameters carried in each MR; Determine the target interference area and each second MR corresponding to the target interference area based on the preset areas corresponding to the preset neighboring cells and the preset power parameters carried by the first MRs; the target interference area cause the greatest interference to the target cell; optimizing the uplink interference of the target cell based on the target interference area and preset power parameters carried by the second MRs; Wherein, based on the acquired preset screening parameters carried in each MR, each first MR is screened, including: Based on the obtained adjacent physical cell identifier PCI carried in each MR, a first screening is performed to obtain a first screening set; the first screening set is a set formed by each MR whose adjacent cell PCI is the same as the target cell PCI; Based on the serving cell carrier frequency Earfcn carried by each MR in the first screening set, a second screening is performed on each MR in the first screening set to obtain a second screening set; the second screening set is the serving cell Earfcn a set composed of MRs that have co-channel interference with the target cell Earfcn; Based on the number of physical resource blocks (PRBs) occupied by the physical uplink shared channel PUSCH carried by each MR in the second screening set, perform a third screening on each MR in the second screening set to obtain the first MRs; the first MRs are obtained; The number of PRBs occupied by the PUSCH carried by the first MR is non-zero; Wherein, determining the target interference area and each second MR corresponding to the target interference area based on each preset area corresponding to the each preset neighbor cell and the preset power parameter carried by the each first MR, including: Determine each first MR corresponding to each preset area based on the longitude and latitude information of each preset area corresponding to each preset neighbor area and the longitude and latitude information of each first MR; determining, based on preset power parameters carried by the first MRs corresponding to the preset areas, the sum of the interference powers of the first MRs corresponding to the preset areas to the target cell; The area corresponding to the maximum interference power sum and each first MR corresponding to this area are respectively determined as the target interference area and each second MR corresponding to the target interference area. 2 . The method according to claim 1 , wherein the first MR corresponding to each preset area is determined based on a preset power parameter carried by each first MR corresponding to each preset area. 3 . The sum of the interference power to the target cell includes: determining, based on the neighbor cell reference signal received power RSRP carried by each first MR corresponding to each preset area, a link loss L from each first MR corresponding to each preset area to the target cell; determining, based on the UE transmit power headroom carried by each first MR corresponding to each preset area, the transmit power P consumed by each first MR corresponding to each preset area; Based on the link loss L and the transmit power P, the sum of the interference power of the first MRs corresponding to the preset regions to the target cell is determined. 3. The method according to claim 1 or 2, wherein the uplink interference of the target cell is optimized based on the target interference area and preset power parameters carried by the second MRs, include: determining the difference between the RSRP of the serving cell and the RSRP of the neighboring cell carried by the second MRs; Counting the first proportion of the differences that are greater than the preset first optimization threshold among the differences, and counting the first proportion of the differences that are within the range formed by the first optimization threshold and the second optimization threshold among the differences. Two proportions, and a third proportion of the differences that are less than the second optimization threshold among the statistical differences; wherein the first optimization threshold is greater than the second optimization threshold; If the first ratio is greater than the first preset ratio, generating first optimization information for instructing to expand the capacity of the cell where the target interference area is located, and the expanded capacity is the preset capacity; If the second ratio is greater than the second preset ratio, generating second optimization information for instructing to adjust the base station antenna of the target cell and the adjusted angle is a preset angle; If the third ratio is greater than a third preset ratio, generate third optimization information for instructing to adjust the handover threshold and reselection threshold of the target cell, so that the handover threshold and reselection threshold of the target cell are adjusted. The thresholds are respectively higher than the handover threshold and the reselection threshold of the cell where the target interference area is located. 4. An LTE network uplink interference optimization device, characterized in that, comprising: an acquisition unit, configured to acquire measurement reports MR of each preset neighboring cell of a target cell; the target cell is a cell to be optimized for uplink interference; a screening unit, configured to screen out each first MR based on the acquired preset screening parameters carried in each MR; a determining unit, configured to determine a target interference area and each second MR corresponding to the target interference area based on each preset area corresponding to the each preset neighbor cell and the preset power parameter carried by the each first MR; The target interference area causes the greatest interference to the target cell; an optimization unit, configured to optimize the uplink interference of the target cell based on the target interference area and preset power parameters carried by the second MRs; Wherein, the screening unit includes: a first screening subunit, configured to perform a first screening based on the acquired adjacent physical cell identifier PCI carried in each MR to obtain a first screening set; the first screening set is the adjacent cell PCI and the target cell PCI A set of the same MRs; The second screening subunit is configured to perform a second screening on each MR in the first screening set based on the serving cell carrier frequency Earfcn carried by each MR in the first screening set to obtain a second screening set; the The second screening set is a set composed of MRs that have co-channel interference between the serving cell Earfcn and the target cell Earfcn; The third screening subunit is configured to perform a third screening on each MR in the second screening set based on the number of physical resource blocks occupied by the physical uplink shared channel PUSCH carried by each MR in the second screening set, to obtain the each first MR; the number of PRBs occupied by the PUSCH carried by each first MR is non-zero; Wherein, the determining unit includes: a first determining subunit, configured to determine each first MR corresponding to each preset area based on the longitude and latitude information of each preset area corresponding to each preset neighbor area and the longitude and latitude information of each first MR; The second determination subunit is configured to determine, based on the preset power parameters carried by the first MRs corresponding to the preset areas, the difference between the interference powers of the first MRs corresponding to the preset areas to the target cell and; The third determination subunit is configured to determine the area corresponding to the maximum interference power sum and each first MR corresponding to the area as the target interference area and each second MR corresponding to the target interference area, respectively. 5. The apparatus according to claim 4, wherein the second determination subunit is specifically used for: determining, based on the neighbor cell reference signal received power RSRP carried by each first MR corresponding to each preset area, a link loss L from each first MR corresponding to each preset area to the target cell; determining, based on the UE transmit power headroom carried by each first MR corresponding to each preset area, the transmit power P consumed by each first MR corresponding to each preset area; Based on the link loss L and the transmit power P, the sum of the interference power of the first MRs corresponding to the preset regions to the target cell is determined. 6. The device according to claim 4 or 5, wherein the optimization unit is specifically used for: determining the difference between the RSRP of the serving cell and the RSRP of the neighboring cell carried by the second MRs; Counting the first proportion of the differences that are greater than the preset first optimization threshold among the differences, and counting the first proportion of the differences that are within the range formed by the first optimization threshold and the second optimization threshold among the differences. Two proportions, and a third proportion of the differences that are less than the second optimization threshold among the statistical differences; wherein the first optimization threshold is greater than the second optimization threshold; If the first ratio is greater than the first preset ratio, generating first optimization information for instructing to expand the capacity of the cell where the target interference area is located, and the expanded capacity is the preset capacity; If the second ratio is greater than the second preset ratio, generating second optimization information for instructing to adjust the base station antenna of the target cell and the adjusted angle is a preset angle; If the third ratio is greater than a third preset ratio, generate third optimization information for instructing to adjust the handover threshold and reselection threshold of the target cell, so that the handover threshold and reselection threshold of the target cell are adjusted. The thresholds are respectively higher than the handover threshold and the reselection threshold of the cell where the target interference area is located.

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