CN104320784B

CN104320784B - A kind of method and device for planning of frequency

Info

Publication number: CN104320784B
Application number: CN201410540135.7A
Authority: CN
Inventors: 孙云翔; 聂昌; 郭希蕊; 张勍; 毕猛; 胡云
Original assignee: China United Network Communications Group Co Ltd
Current assignee: China United Network Communications Group Co Ltd
Priority date: 2014-10-13
Filing date: 2014-10-13
Publication date: 2018-03-06
Anticipated expiration: 2034-10-13
Also published as: CN104320784A

Abstract

The present invention disclose a kind of method and device for planning of frequency, is related to technical field of communication network, for solving in refarming WCDMA networks, the problem of adjacent frequency between the signal in signal and GSM network in WCDMA networks is disturbed.The present invention disturbs frequency point sets by determining, with determination core interference base station set, then the target BS set of the frequency in deployment interference frequency point sets is obtained from the core interference base station set, frequency is disturbed corresponding to each target BS to replace in target BS set using the frequency not interfered to the WCDMA signals in refarming WCDMA network designs area in refarming WCDMA network designs areas and buffering area.Scheme provided in an embodiment of the present invention is suitable to use when planning frequency.

Description

Method and device for planning frequency points

Technical Field

The invention relates to the technical field of communication networks, in particular to a method and a device for planning frequency points.

Background

With the rapid development of high-rate data services, the pressure of bearing data services in Wideband Code Division Multiple Access (WCDMA) networks is increasing. In order to relieve the pressure of data service, part of frequency point resources in a Global System for Mobile communication (GSM) network may be resurmed and then provided for the WCDMA network. Where refarming is a spectral reformation technique. However, when the WCDMA system is deployed adjacent to the GSM system using the same frequency resource, the co-channel interference caused by the signal in the GSM network to the WCDMA network is severe, so that a buffer for spatial isolation needs to be added between the WCDMA system and the GSM system.

As shown in fig. 1, the network is divided into three parts (an a area, a B area, and a C area). The A area is a refarming-WCDMA network deployment area. In the area a, the refarming-WCDMA network uses a refarming GSM frequency point (i.e., a WCDMA signal in a refarming-WCDMA network deployment area), and the remaining frequency points of the GSM network (i.e., GSM signals in the refarming-WCDMA network deployment area). The B area is a buffer area, and a refarming-WCDMA network is not arranged in the buffer area, namely only the residual frequency points of the GSM network are included. The C area is a GSM network. All frequency points of the GSM network (including the GSM frequency point for performing refarming and the rest frequency points of the GSM network) are included in the C area. The residual frequency points of the GSM network are the frequency points except the refarming frequency points provided for the WCDMA network in the GSM network.

In the prior art, a buffer area mode is adopted to solve the problem that signals in a GSM network cause co-channel interference to a WCDMA network, however, in a refarming-WCDMA network, when frequency resources are in shortage, adjacent channel deployment is needed between the WCDMA network and the GSM network, so that adjacent channel interference occurs between signals in the WCDMA network and signals in the GSM network, and the signal quality of the refarming-WCDMA network is affected.

Disclosure of Invention

The embodiment of the invention provides a method and a device for planning frequency points, which are used for solving the problem of adjacent channel interference between signals in a WCDMA network and signals in a GSM network in a refarming-WCDMA network.

In one aspect, an embodiment of the present invention provides a method for planning frequency points, including:

determining an interference frequency point set, wherein frequency points in the interference frequency point set are frequency points which cause interference to Wideband Code Division Multiple Access (WCDMA) signals in a frequency spectrum reforming WCDMA network deployment area;

determining a core interference base station set, wherein base stations in the core interference base station set are base stations to be determined which meet interference conditions, and the interference conditions are used for screening base stations which are positioned in the refarming-WCDMA network deployment area and the buffer area and cause interference to all signals in the refarming-WCDMA network deployment area;

determining a target base station set for deploying the frequency points in the interference frequency point set from the core interference base station set;

determining a replacement frequency point set, wherein the frequency points in the replacement frequency point set are frequency points which are positioned in the refarming-WCDMA network deployment area and the buffer area and do not cause interference to WCDMA signals in the refarming-WCDMA network deployment area;

and replacing the interference frequency point corresponding to each target base station in the target base station set by adopting the frequency point in the replacement frequency point set.

In another embodiment of the present invention, the determining the set of permutated frequency points includes:

determining a same-adjacent frequency interference frequency point set causing same-frequency interference and adjacent-frequency interference to base stations in the target base station set;

determining a non-interference frequency point set, wherein the frequency points in the non-interference frequency point set are frequency points which do not cause interference on WCDMA signals in the refarming-WCDMA network deployment area;

determining the replacement frequency point set through the same adjacent frequency interference frequency point set and the non-interference frequency point set;

the replacing the interference frequency point corresponding to each target base station in the target base station set by adopting the frequency point in the replacement frequency point set comprises:

traversing the frequency points in the replacement frequency point set, acquiring at least one first replacement frequency point which does not cause interference to the WCDMA signals in the refarming-WCDMA network deployment area, and replacing the interference frequency point corresponding to each target base station in the target base station set by adopting the at least one first replacement frequency point;

when all frequency points in the replacement frequency point set are traversed, at least one second replacement frequency point which causes minimum interference to WCDMA signals in the refarming-WCDMA network deployment area is obtained from the replacement frequency point set, and the interference frequency point corresponding to each target base station in the target base station set is replaced by adopting the at least one second replacement frequency point.

In another embodiment of the present invention, after the frequency points in the replacement frequency point set are used to replace the interference frequency points corresponding to each target base station in the target base station set, the method further includes:

judging whether the at least one first replacement frequency point and/or the at least one second replacement frequency point cause interference to GSM signals in the refarming-WCDMA network deployment area and the buffer area;

when the at least one first replacement frequency point and/or the at least one second replacement frequency point cause interference to GSM signals in the refarming-WCDMA network deployment area and the buffer area, replacing the interference frequency point corresponding to each target base station in the target base station set by using a new replacement frequency point in the replacement frequency point set except the at least one first replacement frequency point and/or the at least one second replacement frequency point, wherein the new replacement frequency point is a frequency point which does not cause interference to the GSM signals in the refarming-WCDMA network deployment area and the buffer area.

In another embodiment of the present invention, the determining the set of core interfering base stations includes:

acquiring first measurement report MR data corresponding to global system for mobile communications (GSM) network users, wherein the first MR data comprises identification codes of X strongest neighbor cells and signal levels of the X strongest neighbor cells corresponding to a main cell of each GSM network user, and X is an integer greater than 0 and smaller than 10;

judging whether the difference between the signal level of the X strongest neighbor cells corresponding to each GSM network user and the GSM neighbor frequency power leakage loss is greater than or equal to a neighbor frequency interference judgment threshold, wherein the neighbor frequency interference judgment threshold is used for judging whether the signals of the neighbor cells cause neighbor frequency interference to the signals of the main cell;

and when the difference between the signal level of at least one strongest adjacent cell corresponding to any one GSM network user and the GSM adjacent frequency power leakage loss is larger than or equal to an adjacent frequency interference judgment threshold, determining the base station corresponding to the at least one strongest adjacent cell as the base station in the core interference base station set.

In another embodiment of the present invention, before the determining whether the difference between the signal level of the X strongest neighbor cells corresponding to each GSM network user and the GSM neighbor power leakage loss is greater than or equal to a neighbor interference determination threshold, the method further includes:

receiving the input adjacent channel interference judgment threshold; or,

acquiring second MR data, wherein the second MR data comprises Received Signal Code Power (RSCP) sample points corresponding to each refarming-WCDMA network user; and performing a cumulative distribution function curve on the RSCP sample point corresponding to each refarming-WCDMA network user, and determining the adjacent channel interference judgment threshold as a numerical value with a function value of 0.1 in the cumulative distribution function curve.

On the other hand, an embodiment of the present invention provides a device for planning frequency points, including:

the system comprises an acquisition module, a determination module and a processing module, wherein the acquisition module is used for acquiring at least one interference frequency point which causes interference to a Wideband Code Division Multiple Access (WCDMA) signal in a frequency spectrum reforming wideband code division multiple access (refarming-WCDMA) network deployment area and providing the at least one interference frequency point to the determination module; obtaining a base station to be determined which meets interference conditions, and providing the base station to be determined to the determining module, wherein the interference conditions are used for screening base stations which are positioned in the refarming-WCDMA network deployment area and the buffer area and cause interference to all signals in the refarming-WCDMA network deployment area;

the determining module is used for determining an interference frequency point set, wherein the frequency points in the interference frequency point set are frequency points which cause interference on WCDMA signals in a refarming-WCDMA network deployment area; determining a core interference base station set, wherein a base station in the core interference base station set is the base station to be determined;

the acquiring module is further configured to acquire at least one target base station deploying the frequency points in the interference frequency point set from the core interference base station set, and provide the at least one target base station to the determining module;

the determining module is further configured to determine the at least one target base station as a base station in a target base station set, and provide the base station in the target base station set to the replacing module;

the obtaining module is further configured to obtain at least one replacement frequency point, which is located in the refarming-WCDMA network deployment area and the buffer area and does not cause interference to WCDMA signals in the refarming-WCDMA network deployment area, and provide the at least one replacement frequency point to the determining module;

the determining module is further configured to determine a replacement frequency point set, and provide the replacement frequency point set to the replacement module, where a frequency point in the replacement frequency point set is a frequency point in the refarming-WCDMA network deployment area and the buffer area that does not cause interference to a WCDMA signal in the refarming-WCDMA network deployment area;

and the replacing module is used for replacing the interference frequency point corresponding to each target base station in the target base station set by adopting the replacing frequency point in the replacing frequency point set.

In another embodiment of the present invention, the obtaining module is further configured to obtain at least one co-channel and adjacent-channel interference frequency point that causes co-channel interference and adjacent-channel interference to the base stations in the target base station set, and provide the at least one co-channel and adjacent-channel interference frequency point to the determining module; acquiring at least one frequency point which does not cause interference to the WCDMA signals in the refarming-WCDMA network deployment area, and providing the frequency point which does not cause interference to the WCDMA signals in the refarming-WCDMA network deployment area to the determining module;

the determining module is further configured to determine a co-channel and adjacent-channel interference frequency point set causing co-channel interference and adjacent-channel interference to the base stations in the target base station set; determining a non-interference frequency point set, wherein the frequency points in the non-interference frequency point set are frequency points which do not cause interference on WCDMA signals in the refarming-WCDMA network deployment area; determining the replacement frequency point set through the same adjacent frequency interference frequency point set and the non-interference frequency point set;

the permutation module comprises: an acquisition unit, a replacement unit;

the acquiring unit is configured to traverse frequency points in the permutation frequency point set, acquire at least one first permutation frequency point that does not cause interference to a WCDMA signal in the refarming-WCDMA network deployment area, replace, by using the at least one first permutation frequency point, an interference frequency point corresponding to each target base station in a target base station set, and provide the at least one first permutation frequency point to the replacing unit;

the obtaining unit is further configured to obtain, when the first determination result is that all frequency points in the replacement frequency point set have been traversed, at least one second replacement frequency point that causes minimum interference to a WCDMA signal in the refarming-WCDMA network deployment area from the replacement frequency point set, and provide the at least one second replacement frequency point to the replacement unit;

the replacing unit is configured to replace the interference frequency point corresponding to each target base station in the target base station set with the at least one first replacement frequency point or the at least one second replacement frequency point.

In another embodiment of the present invention, the apparatus further comprises: a judgment module for judging whether the received signal is correct,

the judging module is configured to judge whether the at least one first replacement frequency point and/or the at least one second replacement frequency point cause interference to GSM signals in the refarming-WCDMA network deployment area and the buffer area, and provide a second judgment result to the replacing module;

the replacing module is further configured to, when the second determination result indicates that the at least one first replacing frequency point and/or the at least one second replacing frequency point causes interference to GSM signals in the refarming-WCDMA network deployment area and the buffer area, replace the interference frequency point corresponding to each target base station in the target base station set with a new replacing frequency point in the replacing frequency point set, where the new replacing frequency point is a frequency point that does not cause interference to GSM signals in the refarming-WCDMA network deployment area and the buffer area, except for the at least one first replacing frequency point and/or the at least one second replacing frequency point.

In another embodiment of the present invention, the obtaining module is further configured to obtain first measurement report MR data corresponding to a GSM network user, and provide the first MR data to the determining module, where the first MR data includes identification codes of X strongest neighbor cells corresponding to a primary cell of each GSM network user, and signal levels of the X strongest neighbor cells, where X is an integer greater than 0 and less than 10;

the judging module is further configured to judge whether a difference between the signal level of the X strongest neighbor cells corresponding to each GSM network user and the GSM neighbor power leakage loss is greater than or equal to a neighbor interference judgment threshold, and provide a third judgment result to the determining module, where the neighbor interference judgment threshold is used to judge whether a signal of a neighbor cell causes neighbor interference to a signal of a main cell;

the determining module is further configured to determine, when the third determination result is that a difference between a signal level of at least one strongest neighbor cell corresponding to any one GSM network user and a GSM neighbor power leakage loss is greater than or equal to a neighbor interference determination threshold, that a base station corresponding to the at least one strongest neighbor cell is a base station in the core interference base station set.

In another embodiment of the present invention, the apparatus further comprises: a receiving module, a calculating module;

the receiving module is further configured to receive the input adjacent channel interference decision threshold; or,

the acquiring module is further configured to acquire second MR data, where the second MR data includes a Received Signal Code Power (RSCP) sample point corresponding to each refarming-WCDMA network user, and provide the second MR data to the calculating module;

the calculation module is configured to perform a cumulative distribution function curve on the RSCP sample points corresponding to each refarming-WCDMA network user, and determine that the adjacent channel interference decision threshold is a numerical value having a function value of 0.1 in the cumulative distribution function curve.

Compared with the prior art which adopts a buffer area mode to solve the problem that the signals in the GSM network cause the co-channel interference to the WCDMA network, in the refarming-WCDMA network, when the frequency resources are short, the problem that the adjacent-channel deployment is needed between the WCDMA network and the GSM network, so that the adjacent-channel interference occurs between the signals in the WCDMA network and the signals in the GSM network, and the signal quality of the refarming-WCDMA network is influenced is solved, the method and the device for planning the frequency points provided by the embodiment of the invention determine an interference frequency point set which causes the interference to the WCDMA signals in the refarming-WCDMA network deployment area, determine a core interference base station set which is formed by base stations to be determined and deployed in the refarming-WCDMA network deployment area and the buffer area and possibly cause the interference to the WCDMA signals in the refarming-WCDMA network deployment area, and then acquire a target base station set which deploys the frequency points in the interference frequency point set from the core interference base station set, and replacing the interference frequency point corresponding to each target base station in the target base station set by adopting the frequency point which does not cause interference to the WCDMA signal in the refarming-WCDMA network deployment area and the buffer area, so that the adjacent frequency interference between the signal in the WCDMA network and the signal in the GSM network can be eliminated in the refarming-WCDMA network.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is a schematic diagram of regional deployment of a GSM network, a WCDMA network, and a refarming-WCDMA network in a frequency point planning method;

fig. 2 is a schematic diagram of a logical structure of a frequency point planning system according to a frequency point planning method provided in the present invention;

fig. 3 is a flowchart of a method for planning frequency points according to the present invention;

fig. 4 is a schematic diagram of another logic structure of a frequency point planning system under the frequency point planning method provided by the present invention;

fig. 5 is a flowchart of another method for planning frequency points according to the present invention;

fig. 6 is a flowchart of another method for planning frequency points according to the present invention;

fig. 7 is a flowchart of a method for planning a frequency point according to another embodiment of the present invention;

fig. 8 is a flowchart of a method for planning a frequency point according to another embodiment of the present invention;

fig. 9 is a schematic diagram of a logic structure of a frequency point planning apparatus according to the present invention;

fig. 10 is a schematic diagram of a logic structure of another frequency point planning apparatus provided in the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

As used in this specification, the terms "component," "module," "system," and the like are intended to refer to a computer-related entity, either hardware, firmware, a combination of hardware and software, or software in execution. For example, a component may be, but is not limited to being, a process running on a processor, an object, an executable, a thread of execution, a program, and/or a computer. By way of illustration, both an application running on a computing device and the computing device can be a component. One or more components can reside within a process and/or thread of execution and a component can be localized on one computer and/or distributed between 2 or more computers. In addition, these components can execute from various computer readable media having various data structures stored thereon. The components may communicate by way of local and/or remote processes such as in accordance with a signal having one or more data packets (e.g., data from two components interacting with another component in a local system, distributed system, and/or across a network such as the internet with other systems by way of the signal).

As shown in fig. 2, the embodiment of the present invention is applicable to a frequency point planning system 20, where the system 20 includes a Mobile Switching Center (MSC) 201, a base station 202, and an Operation and Maintenance Center (OMC) device 203. The Base Station 202 includes a Base Station Controller (BSC) 2021 and a Base Transceiver Station (BTS) 2022.

The MSC201 is the core of the whole GSM Network, and controls the service of the BSC 2021, and provides the switching function and the connection with other functions in the system, and the MSC may directly provide or provide the interface function with the fixed Network such as Public Switched Telephone Network (PSTN) through the Mobile Gateway (GMSC), and connect the Mobile subscriber with the Mobile subscriber, the Mobile subscriber and the fixed Network subscriber.

The BSC 2021 in the base station 202 is the connection point between the BTS 2022 and the MSC201 and also provides an interface for exchanging information between the BTS 2022 and the MSC 201. A BSC 2021 typically controls at least one BTS 2022, whose primary functions are radio channel management, real-time call and communication link set-up and tear-down, and control of handoffs of mobile stations within its control area, etc.

The BTS 2022 is controlled by the BSC 2021, serves radio transceiver equipment of a corresponding cell, and implements an air interface function of the BTS 2022 with a mobile station, that is, is responsible for reception and transmission processing of a mobile signal, of which MR data is one.

The OMC device 203 is an operation and maintenance device. With the present invention, the OMC device 203 can obtain the information for replacing the interfering frequency points from the MSC201, generate a replacement result by replacing the information of the interfering frequency points, and then send the replacement result to the BSC 2021, so that the BSC 2021 controls the BTS 2022 to transmit signals according to the replacement result. The information for replacing the interference frequency point includes frequency point information (such as frequency point number of the interference frequency point, frequency point number of a non-interference frequency point, and the like), MR data corresponding to a GSM network user, MR data corresponding to a WCDMA network user, and the like, and the determined information of the interference frequency point is replaced by the non-interference frequency point which is located in a refarming-WCDMA network deployment area and a buffer area and does not cause interference to a WCDMA signal in the refarming-WCDMA network deployment area.

It should be noted that the WCDMA signal is a GSM frequency point using refarming.

For the OMC device 203, as shown in fig. 3, the present invention provides a method for planning frequency points, which comprises the following steps:

301, determining an interference frequency point set, wherein the frequency points in the interference frequency point set are frequency points causing interference to WCDMA signals in a refarming-WCDMA network deployment area.

The frequency points in the interference frequency point set obtained in the step are the frequency points which cause interference to WCDMA signals in a refarming-WCDMA network deployment area determined from a frequency domain space.

302, a core interference base station set is determined, wherein base stations in the core interference base station set are base stations to be determined which meet interference conditions, and the interference conditions are used for screening base stations which are positioned in a refarming-WCDMA network deployment area and a buffer area and cause interference to all signals in the refarming-WCDMA network deployment area.

All signals in the refarming-WCDMA network deployment area include WCDMA signals and GSM signals.

The base station in the core interference base station set obtained in the step is a base station corresponding to a frequency point which is determined and deployed from the geographical space and possibly causes interference to the WCDMA signal in the refarming-WCDMA network deployment area. Namely, it is determined that the base stations meeting the interference condition all belong to the base stations in the core interference base station set.

303, determining a target base station set for deploying frequency points in the interference frequency point set from the core interference base station set.

And 304, determining a replacement frequency point set, wherein the frequency points in the replacement frequency point set are the frequency points which are positioned in a refarming-WCDMA network deployment area and a buffer area and do not cause interference to WCDMA signals in the refarming-WCDMA network deployment area.

And 305, replacing the interference frequency point corresponding to each target base station in the target base station set by using the frequency point in the replacement frequency point set.

Compared with the prior art which adopts a buffer area mode to solve the problem that the signal in the GSM network causes the same frequency interference to the WCDMA network, however, in the refarming-WCDMA network, when the frequency resource is short, the problem that the adjacent frequency deployment is needed between the WCDMA network and the GSM network, so that the adjacent frequency interference occurs between the signal in the WCDMA network and the signal in the GSM network, thereby affecting the signal quality of the refarming-WCDMA network is solved, the method determines the interference frequency point set which causes the interference to the WCDMA signal in the refarming-WCDMA network deployment area, determines the core interference base station set which is formed by the base stations to be determined and is deployed in the refarming-WCDMA network deployment area and the buffer area and possibly causes the interference to the WCDMA signal in the refarming-WCDMA network deployment area, and then acquires the target base station set which deploys the frequency points in the interference frequency point set from the core interference base station set, and replacing the interference frequency point corresponding to each target base station in the target base station set by adopting the frequency point which does not cause interference to the WCDMA signal in the refarming-WCDMA network deployment area and the buffer area, so that the adjacent frequency interference between the signal in the WCDMA network and the signal in the GSM network can be eliminated in the refarming-WCDMA network.

It should be noted that, in the present invention, the execution subject for realizing the purpose of eliminating the adjacent channel interference between the signal in the WCDMA network and the signal in the GSM network in the refarming-WCDMA network through the above steps 301 to 304 is not limited to the OMC device. Or an independent frequency point planning device specially used for frequency point planning to eliminate adjacent channel interference between signals in a WCDMA network and signals in a GSM network. As shown in fig. 4, the present invention is also applicable to another frequency point planning system 40, and the system 40 further includes a frequency point planning device 204.

The frequency point planning device 204 is further configured to receive information, which is sent by the OMC device 203 and is obtained from the MSC201 and used for replacing the interference frequency point, generate a replacement result according to the information for replacing the interference frequency point, and send the replacement result to the OMC device 203, so that the OMC device 203 forwards the replacement result to the BSC 2021.

For ease of understanding, the implementation body of the present invention is described by taking an OMC device as an example.

Further, in step 301, the determining, by the OMC device, the set of interference frequency points includes:

and the OMC equipment determines the frequency points which can cause interference to the WCDMA signals in the refarming-WCDMA network according to the frequency point distribution of the WCDMA network in the refarming-WCDMA network deployment area. Usually, two frequency points adjacent to each other on both sides of the bandwidth of the refarming-WCDMA network are used as the frequency points causing interference to the WCDMA signal. For example, a 3.8MHz WCDMA network occupies 19 refarming GSM frequency points (WCDMA signals). FW is used to represent the set of refarming GSM frequency points occupied by a refarming-WCDMA network, i.e. FW contains 19 frequency points. Assuming FW is { K, K +1, … …, K +18}, FI is obtained as { K-2, K-1, K +19, K +20 }. Wherein FI represents the interference frequency point set, K represents the frequency point number of the refarming GSM frequency point, for example, when the WCDMA network center carrier frequency in the refarming-WCDMA network deployment area selects base station downlink 957 MHz/uplink 912MHz, K is 101. It is understood that when K is 101, the frequency points with the frequency point numbers 99, 100, 120, and 121 are the interference frequency points with the frequency point number of 101.

Further, in step 302, as shown in fig. 5, the determining, by the OMC device, the set of core interfering base stations includes:

3021, the OMC device obtains first Measurement Report (MR) data corresponding to a GSM network user.

GSM network users are used to acquire base stations that interfere with WCDMA signals instead of WCDMA network users. The GSM network user in the refarming-WCDMA network deployment area used in the invention can acquire the user information in the GSM network, and the WCDMA network user in the refarming-WCDMA network deployment area can acquire the user information in the WCDMA network. The user information may include an identification code of the cell, a signal level of the cell. The invention is used for solving the problem of eliminating the adjacent channel interference between the signals in the WCDMA network and the signals in the GSM network, and the base station corresponding to the GSM frequency point which carries out refarming in the refarming-WCDMA network can simultaneously serve the GSM network user and the WCDMA network user, so that the GSM network user is used for acquiring the user information of the GSM network, and the base station which possibly causes interference conditions on all the signals in a refarming-WCDMA network deployment area and a buffer area can be acquired.

The first MR data comprises identification codes of X strongest neighbor cells corresponding to a main cell of each GSM network user and signal levels of the X strongest neighbor cells, wherein X is an integer larger than 0.

Firstly, the OMC device acquires a BCCH (Broadcast Control Channel) and BSIC (Base Station Identity Code) corresponding to each cell, and then the OMC device acquires an Identity of a main cell and a signal level of the main cell of each GSM network user through the BCCH and BSIC corresponding to each cell, thereby acquiring identities of X strongest neighbor cells and signal levels of X strongest neighbor cells corresponding to the main cell of each GSM network user. The invention is not limited to specific values of X, for example X may be 6.

3022, the OMC device determines whether the difference between the signal level of the X strongest neighbor cells corresponding to each GSM network user and the GSM neighbor power leakage loss is greater than or equal to a neighbor interference determination threshold.

And the adjacent channel interference judgment threshold is used for judging whether the signal of the adjacent cell causes adjacent channel interference to the signal of the main cell.

In this embodiment, there are two ways to obtain the adjacent channel interference determination threshold.

In a first obtaining mode, the OMC device receives an input adjacent channel interference decision threshold. It will be appreciated that the input adjacent channel interference decision threshold is a technically empirical value (e.g., -95 dBm).

In a second acquisition mode, the OMC device acquires second MR data. The second MR data comprises Received Signal Code Power (RSCP) sample points corresponding to each refarming-WCDMA network user; and performing an accumulative distribution function curve on the RSCP sample point corresponding to each refarming-WCDMA network user, and determining the adjacent channel interference judgment threshold as a numerical value with a function value of 0.1 in the accumulative distribution function curve. The adjacent channel interference judgment threshold obtained by the method is closer to the actual situation, and the accuracy of the adjacent channel interference judgment threshold obtained by the method for screening the base station serving as the core interference base station is higher.

3023, when the difference between the signal level of at least one strongest neighbor cell corresponding to any GSM network user and the GSM neighbor power leakage loss is greater than or equal to the neighbor interference determination threshold, the OMC device determines that the base station corresponding to the at least one strongest neighbor cell is a base station in the core interference base station set.

It can be understood that, each base station in the acquired core interfering base station set is not a base station obtained for whether to interfere with a WCDMA signal in the refarming-WCDMA network deployment area, but a base station that may interfere with any signal (a WCDMA signal and/or a GSM signal) in the refarming-WCDMA network deployment area is determined according to the above interference condition (the difference between the signal level of at least one strongest neighbor cell corresponding to any GSM network user and the GSM neighbor power leakage loss is greater than or equal to the neighbor interference decision threshold). Therefore, the base station of the core interfering base station set may cause interference to the WCDMA signal in the refarming-WCDMA network deployment area, or may not cause interference to the WCDMA signal in the refarming-WCDMA network deployment area. Then, after obtaining the interference frequency point set in step 301 and the core interference base station set in step 302, finding out a base station with frequency points of the interference frequency point set deployed from the core interference base station set in step 303 as a base station in the target base station set.

Further, in step 304, as shown in fig. 6, the OMC device determines a set of permutated frequency points, including:

3041, OMC device determines the frequency point set of co-and adjacent-channel interference causing co-channel interference and adjacent-channel interference to the base stations in the target base station set.

And the same-adjacent frequency interference frequency point set comprises frequency points which cause same-frequency interference and adjacent-frequency interference to each base station in the target base station set. Therefore, the range of the set of co-channel and adjacent-channel interference frequency points determined in step 3041 is greater than the range of the set of interference frequency points (FI) determined in step 301. When the set of the same-frequency adjacent-frequency interference frequency points is set as FK, then

Optionally, before step 3041, the OMC device may determine whether the core interference base station set is an empty set, and when the core interference base station set is a non-empty set, continue to execute step 3041.

3042, the OMC device determines a non-interfering frequency point set, where the frequency points in the non-interfering frequency point set are the frequency points that do not cause interference to the WCDMA signals in the refarming-WCDMA network deployment area.

3043, the OMC device determines the replacement frequency point set according to the same adjacent frequency interference frequency point set and the non-interference frequency point set.

Because the frequency points in the non-interference frequency point set are frequency points which do not cause interference to the WCDMA signals in the refarming-WCDMA network deployment area, but the frequency points in the non-interference frequency point set may cause interference to at least one base station in the target base station set, the replacement frequency points need to be frequency points which do not cause interference to both the WCDMA signals in the refarming-WCDMA network deployment area and the base stations in the target base station set.

And setting the frequency conversion point set as FZ and the non-interference frequency point set as FN, wherein FZ is FN-FK.

It should be noted that another frequency point planning method can be obtained through the steps in fig. 5 and fig. 6.

Further, in step 305, as shown in fig. 7, the replacing, by the OMC device, the interference frequency point corresponding to each target base station in the target base station set by using the frequency point in the replacement frequency point set includes:

3051, the OMC device traverses frequency points in the exchange frequency point set, acquires at least one first exchange frequency point which does not cause interference to WCDMA signals in a refarming-WCDMA network deployment area, and replaces the interference frequency point corresponding to each target base station in the target base station set by using the at least one first exchange frequency point.

Specifically, the OMC device sequentially judges whether each frequency point in the replacement frequency point set causes interference, and then acquires a frequency point which does not cause interference to a WCDMA signal in a refarming-WCDMA network deployment area from the replacement frequency point set as a first replacement frequency point. The number of the first replacement frequency points is the same as the number of interference frequency points to be replaced (i.e. the interference frequency point corresponding to each target base station in the target base station set).

3052, when all frequency points in the permutation frequency point set have been passed through, the OMC device acquires at least one second permutation frequency point causing minimum interference to a WCDMA signal in a refarming-WCDMA network deployment area from the permutation frequency point set, and the OMC device permutes the interference frequency point corresponding to each target base station in the target base station set by using the at least one second permutation frequency point.

The number of the second replacement frequency points is the same as the number of the interference frequency points to be replaced (i.e. the interference frequency points corresponding to each target base station in the target base station set). It should be noted that, at least two of the drawings in fig. 5, fig. 6, and fig. 7 are combined to form another frequency point planning method.

Further, after step 305 (or step 3053), as shown in fig. 8, the method further includes:

and 306, the OMC equipment judges whether at least one first replacement frequency point and/or at least one second replacement frequency point cause interference to GSM signals in a refarming-WCDMA network deployment area and a buffer area.

307, when the at least one first replacement frequency point and/or the at least one second replacement frequency point cause interference to GSM signals in a refarming-WCDMA network deployment area and a buffer area, the OMC device replaces the interference frequency point corresponding to each target base station in the target base station set with a new replacement frequency point except the at least one first replacement frequency point and/or the at least one second replacement frequency point in the replacement frequency point set.

The new replacement frequency point is the frequency point which does not cause interference to the GSM signal in the refarming-WCDMA network deployment area and the buffer area.

Because the OMC device performs the frequency point replacement operation, the original GSM frequency point planning is disturbed, and although each step in fig. 3, 5 to 8 avoids the problem of causing same-frequency adjacent-frequency interference to GSM signals, the problem that the first replacement frequency point and/or the second replacement frequency point causes the same-frequency adjacent-frequency interference to GSM signals in a refarming-WCDMA network deployment area and a buffer area may still occur, so the OMC device needs to perform interference simulation to a new frequency point planning scheme, calculate interference matrixes between all cells, obtain an interference weight, and thus determine whether the first replacement frequency point and/or the second replacement frequency point used for replacement causes interference to GSM signals in the refarming-WCDMA network deployment area and the buffer area.

It should be noted that, in combination with at least two of the drawings in fig. 8 and fig. 5, and fig. 6 and fig. 7, another planning method for frequency points can be formed.

The method for planning the frequency points provided by the embodiment of the invention can eliminate the adjacent frequency interference between the signals in the WCDMA network and the GSM network, and simultaneously can avoid the interference to the original GSM signal.

As shown in fig. 9, the present invention provides a device 90 for planning frequency points, and the device 90 can implement the method flow shown in fig. 3. Wherein the device 90 comprises: an obtaining module 901, a determining module 902 and a replacing module 903.

An obtaining module 901, configured to obtain at least one interference frequency point that causes interference to a wideband code division multiple access, WCDMA, signal in a spectrum reforming wideband code division multiple access, refarming-WCDMA network deployment area, and provide the at least one interference frequency point to a determining module 902; the base station to be determined that meets the interference condition is obtained and provided to the determining module 902, and the interference condition is used to screen the base stations that are in the refarming-WCDMA network deployment area and the buffer area and cause interference to all signals in the refarming-WCDMA network deployment area.

A determining module 902, configured to determine an interference frequency point set, where a frequency point in the interference frequency point set is a frequency point that causes interference to a WCDMA signal in a refarming-WCDMA network deployment area; and determining a core interference base station set, wherein the base station in the core interference base station set is the base station to be determined.

The obtaining module 901 is further configured to obtain at least one target base station, which deploys frequency points in the interfering frequency point set, from the core interfering base station set, and provide the at least one target base station to the determining module 902.

The determining module 902 is further configured to determine at least one target base station as a base station in the target base station set, and provide the base station in the target base station set to the permuting module 903.

The obtaining module 901 is further configured to obtain at least one permutation frequency point that is located in the refarming-WCDMA network deployment area and the buffer area and does not cause interference to the WCDMA signal in the refarming-WCDMA network deployment area, and provide the at least one permutation frequency point to the determining module 902.

The determining module 902 is further configured to determine a replacement frequency point set, and provide the replacement frequency point set to the replacing module 903, where the frequency points in the replacement frequency point set are frequency points that are in a refarming-WCDMA network deployment area and a buffer area and do not cause interference to WCDMA signals in the refarming-WCDMA network deployment area.

A replacing module 903, configured to replace, by using a replacing frequency point in the replacing frequency point set, an interference frequency point corresponding to each target base station in the target base station set.

The frequency point planning device provided by the embodiment of the invention can eliminate adjacent channel interference between the signal in the WCDMA network and the signal in the GSM network.

Further, with reference to fig. 3, fig. 5 to fig. 8, as shown in fig. 10, the present invention further provides a device 10 for planning frequency points, where the device 10 further includes a receiving module 904, a determining module 905, and a calculating module 906; and the permutation module 903 comprises: an acquisition unit 9031 and a replacement unit 9032.

The obtaining module 901 is further configured to obtain at least one co-channel and adjacent-channel interference frequency point causing co-channel interference and adjacent-channel interference to a base station in the target base station set, and provide the at least one co-channel and adjacent-channel interference frequency point to the determining module 902; at least one frequency point which does not cause interference to the WCDMA signals in the refarming-WCDMA network deployment area is obtained, and the at least one frequency point which does not cause interference to the WCDMA signals in the refarming-WCDMA network deployment area is provided to the determining module 902.

The determining module 902 is further configured to determine a set of co-channel and adjacent-channel interference frequency points causing co-channel interference and adjacent-channel interference to base stations in the target base station set; determining a non-interference frequency point set, wherein the frequency points in the non-interference frequency point set are frequency points which do not cause interference on WCDMA signals in a refarming-WCDMA network deployment area; and determining a replacement frequency point set through the same adjacent frequency interference frequency point set and the non-interference frequency point set.

Then, the obtaining unit 9031 traverses the frequency points in the replacement frequency point set, obtains at least one first replacement frequency point that does not cause interference to a WCDMA signal in a refarming-WCDMA network deployment area, replaces an interference frequency point corresponding to each target base station in the target base station set with the at least one first replacement frequency point, and provides the at least one first replacement frequency point to the replacement unit 9032.

The obtaining unit 9031 is further configured to, when the first determination result is that all frequency points in the replacement frequency point set have been traversed, obtain, from the replacement frequency point set, at least one second replacement frequency point that causes minimum interference to a WCDMA signal in a refarming-WCDMA network deployment area, and provide the at least one second replacement frequency point to the replacement unit 9032.

A replacing unit 9032, configured to replace, by using at least one first replacement frequency point or at least one second replacement frequency point, an interference frequency point corresponding to each target base station in the target base station set.

Further, after the replacing module 903 replaces the interference frequency point corresponding to each target base station in the target base station set with the replacing frequency point in the replacing frequency point set, the determining module 905 is configured to determine whether at least one first replacing frequency point and/or at least one second replacing frequency point causes interference to GSM signals in a refarming-WCDMA network deployment area and a buffer area, and provide a second determination result to the replacing module 903.

When the second determination result is that at least one first replacement frequency point and/or at least one second replacement frequency point causes interference to GSM signals in the refarming-WCDMA network deployment area and the buffer area, the replacement module 903 replaces the interference frequency point corresponding to each target base station in the target base station set with a new replacement frequency point in the replacement frequency point set, the new replacement frequency point being a frequency point that does not cause interference to GSM signals in the refarming-WCDMA network deployment area and the buffer area.

Further, before the determining module 902 determines the set of interference frequency points, the method further includes:

the obtaining module 901 is further configured to obtain first MR data corresponding to a GSM network user, and provide the first MR data to the determining module 905.

The first MR data includes identification codes of X strongest neighbor cells corresponding to a primary cell of each GSM network user, and signal levels of the X strongest neighbor cells, where X is an integer greater than 0 and less than 10.

The determining module 905 is further configured to determine whether a difference between a signal level of the X strongest neighbor cells corresponding to each GSM network user and a GSM neighbor power leakage loss is greater than or equal to a neighbor interference determination threshold, and provide a third determination result to the determining module 902. When the third determination result is that the difference between the signal level of at least one strongest neighbor cell corresponding to any one GSM network user and the GSM neighbor power leakage loss is greater than or equal to the neighbor interference determination threshold, the determining module 902 determines that the base station corresponding to the at least one strongest neighbor cell is the base station in the core interference base station set.

The adjacent channel interference judging threshold is used for judging whether the signal of the adjacent cell causes the adjacent channel interference to the signal of the main cell.

Regarding the obtaining manner of the adjacent channel interference judging threshold, the present invention can receive the input adjacent channel interference judging threshold through the receiving module 904; or, the obtaining module 901 obtains second MR data, where the second MR data includes a received signal code power RSCP sample point corresponding to each refarming-WCDMA network user, and provides the second MR data to the calculating module 906; then, the calculation module 906 performs a cumulative distribution function curve on the RSCP sample points corresponding to each refarming-WCDMA network user, and determines that the adjacent channel interference decision threshold is a numerical value with a function value of 0.1 in the cumulative distribution function curve.

The frequency point planning device provided by the embodiment of the invention can eliminate the adjacent frequency interference between the signal in the WCDMA network and the signal in the GSM network, and simultaneously can avoid the interference to the original GSM signal.

It will be clear to those skilled in the art that, for convenience and simplicity of description, the foregoing division of the functional modules is merely used as an example, and in practical applications, the above function distribution may be performed by different functional modules according to needs, that is, the internal structure of the device is divided into different functional modules to perform all or part of the above described functions. For the specific working processes of the system, the apparatus and the unit described above, reference may be made to the corresponding processes in the foregoing method embodiments, and details are not described here again.

In the several embodiments provided in the present application, it should be understood that the disclosed system, apparatus and method may be implemented in other manners. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the modules or units is only one logical division, and there may be other divisions when actually implemented, for example, a plurality of units or components may be combined or may be integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.

The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.

In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.

The integrated unit, if implemented in the form of a software functional unit and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium and includes several instructions for causing a computer device (which may be a personal computer, a server, a network device, or the like) or a processor (processor) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.

The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.

Claims

1. A method for planning frequency points is characterized by comprising the following steps:

determining a core interference base station set, wherein base stations in the core interference base station set are base stations to be determined which meet interference conditions, and the interference conditions are used for screening base stations which are positioned in the refarming-WCDMA network deployment area and a buffer area and cause interference to all signals in the refarming-WCDMA network deployment area;

2. The method for planning frequency points according to claim 1, wherein the determining the set of permutated frequency points comprises:

3. The method for planning frequency points according to claim 2, wherein after the frequency points in the replacement frequency point set are used to replace the interference frequency points corresponding to each target base station in the target base station set, the method further comprises:

4. The method for planning frequency points according to any of claims 1 to 3, wherein the determining the core interference base station set comprises:

5. The method for planning frequency points according to claim 4, wherein before the determining whether the difference between the signal level of the X strongest neighbor cells corresponding to each GSM network user and the GSM neighbor power leakage loss is greater than or equal to a neighbor interference determination threshold, the method further comprises:

receiving the input adjacent channel interference judgment threshold; or,

6. A planning device for frequency points is characterized by comprising:

7. The device for planning frequency points according to claim 6,

the acquiring module is further configured to acquire at least one co-channel and adjacent-channel interference frequency point causing co-channel interference and adjacent-channel interference to the base stations in the target base station set, and provide the at least one co-channel and adjacent-channel interference frequency point to the determining module; acquiring at least one frequency point which does not cause interference to the WCDMA signals in the refarming-WCDMA network deployment area, and providing the frequency point which does not cause interference to the WCDMA signals in the refarming-WCDMA network deployment area to the determining module;

the permutation module comprises: an acquisition unit, a replacement unit;

8. The device for planning frequency points according to claim 7, wherein said device further comprises: a judgment module for judging whether the received signal is correct,

9. The device for planning frequency points according to claim 8,

the acquiring module is further configured to acquire first measurement report MR data corresponding to a GSM network user of a global system for mobile communications, and provide the first MR data to the determining module, where the first MR data includes identification codes of X strongest neighbor cells and signal levels of the X strongest neighbor cells corresponding to a primary cell of each GSM network user, where X is an integer greater than 0 and less than 10;

10. The device for planning frequency points according to claim 9, wherein said device further comprises: a receiving module, a calculating module;