CN106576353B

CN106576353B - Configuration device, configuration equipment and configuration method of ABS

Info

Publication number: CN106576353B
Application number: CN201480081247.9A
Authority: CN
Inventors: 罗泽宙; 庄宏成
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2014-08-27
Filing date: 2014-08-27
Publication date: 2020-01-10
Anticipated expiration: 2034-08-27
Also published as: WO2016029388A1; CN106576353A

Abstract

The embodiment of the invention discloses a configuration device, configuration equipment and a configuration method of an ABS (anti-lock braking system), which relate to the technical field of communication and can solve the problem of ABS setting under the condition that complex interference relationships exist in a plurality of cells, so that the overall performance of a network in an actual network is improved. The method of the invention comprises the following steps: acquiring cell information and user information; determining an interfered cell and an interference source cell corresponding to the interfered cell by using cell information and user information; clustering cells in the heterogeneous network by using an interference relationship between an interference source cell and an interfered cell; and aiming at the interference relationship between the interference source cell and the interfered cell in the cluster of cells, performing almost All Blank Subframe (ABS) configuration on the interference source cell in the cluster. The invention is suitable for the scene of ABS configuration in a plurality of cells with complex interference relationship.

Description

Configuration device, configuration equipment and configuration method of ABS

Technical Field

The present invention relates to the field of communications technologies, and in particular, to an ABS configuration device, and an ABS configuration method.

Background

A heterogeneous network is a network deployment defined by 3GPP (3rd Generation Partnership Project), in which macro cells and micro cells exist, and the micro cells include pico base station (pico) cells and home base station (femto) cells. The macro cell provides wide area continuous signal coverage, the micro cell provides local small area signal coverage, and the micro cell enhances the local signal coverage area of the macro cell on the basis of the wide area continuous signal coverage of the macro cell, so that the signal coverage areas of the macro cell and the micro cell are overlapped, which causes signal interference between the macro cell and the micro cell, thereby reducing the overall performance of the network.

In order to improve the overall performance of the network, in the prior art, 3GPP defines an ABS (Almost Blank subframe) technology, which reduces the interference strength of an aggressor cell to an interfered cell in a time of a subframe in which data transmission is stopped by causing the aggressor cell to stop transmitting data in some subframes.

However, in the prior art, the ABS technology only considers two cases: one is that a single macro cell interferes with a single pico cell, and the other is that multiple macro cells interfere with a single pico cell. In a practical network, one cell is often both an interfering cell and an interfered cell, and complex mutual interference situations that multiple cells interfere with multiple cells are common, such as: cell 1 interferes with cell 2, cell 2 interferes with cell 3, and cell 3 interferes with cell 1. However, in the prior art, only the two simple and single interference situations are considered, and the problem of ABS setting under the condition of a complex interference relationship in multiple cells cannot be solved, so that the overall performance of the network is reduced.

Disclosure of Invention

Embodiments of the present invention provide an ABS configuration device, and an ABS configuration method, which can solve the ABS setting problem in the case where a complex interference relationship exists in multiple cells, thereby improving the overall performance of a network in an actual network.

In order to achieve the above purpose, the embodiment of the invention adopts the following technical scheme:

in a first aspect, an embodiment of the present invention provides an ABS configuration device, which is applied to a heterogeneous network, where the heterogeneous network at least includes two cells; the device comprises:

an obtaining module, configured to obtain cell information of a cell and user information of users in the cell, where the cell information at least includes a total number of resource blocks in the cell and an average number of resource blocks used by the cell, and the user information at least includes a signal-to-interference-and-noise ratio of a user and an average number of resource blocks occupied by the user;

a determining module, configured to determine an interfered cell and an interference source cell corresponding to the interfered cell by using the cell information and the user information;

a clustering module, configured to cluster cells in the heterogeneous network by using an interference relationship between the interference source cell and the interfered cell;

a configuration module, configured to perform Almost Blank Subframe (ABS) configuration on the interference source cell in a cluster according to an interference relationship between the interference source cell and the interfered cell in the cluster of cells.

With reference to the first aspect, in a first possible implementation manner, the determining module includes:

a load obtaining unit, configured to obtain a cell load of a first cell by using the cell information of the first cell, where the first cell is any one of the heterogeneous networks, and the cell load is a ratio of an average number of resource blocks used by the cell to a total number of resource blocks of the cell;

a detecting unit, configured to detect whether a cell load of the first cell is greater than a first threshold;

a grouping unit, configured to determine an interfered user in the first cell when the cell load of the first cell is greater than the first threshold, and group the interfered user according to a source cell interfered by the interfered user to obtain at least one interfered group, where the interfered user is a user whose signal-to-interference-and-noise ratio is less than a second threshold;

a determining unit, configured to determine whether the first cell meets a first condition and/or a second condition, where the first condition is that a sum of numbers of resource blocks averagely occupied by all the interfered users in the cell is greater than a first threshold, the first threshold is a first macro-cell threshold or a first micro-cell threshold, the second condition is that a number of resource blocks averagely occupied by at least one of the interfered users in the cell is greater than a second threshold, the second threshold is a second macro-cell threshold or a second micro-cell threshold, and the first threshold is greater than or equal to the second threshold;

a first determining unit, configured to determine that the first cell is the interfered cell when the first cell satisfies the first condition and/or the second condition;

a second determining unit, configured to determine, when the interfered cell satisfies the first condition and the second condition, that a source cell interfered by a target interfered user is the interference source cell corresponding to the interfered cell, where the number of resource blocks occupied by the target interfered user in the interfered cell is greater than a second threshold;

a third determining unit, configured to, when the interfered cell only satisfies the first condition, rank the interfered groups according to the number of resource blocks occupied by the interfered group from large to small, and determine that source cells interfered by first N interfered groups are the interference source cells corresponding to the interfered cell, where N is a positive integer;

a fourth determining unit, configured to determine, when the interfered cell only satisfies the second condition, a source cell with a largest number of occupied resource blocks and interfered by the interfered group as the interfering source cell corresponding to the interfered cell.

With reference to the first aspect or the first possible implementation manner of the first aspect, in a second possible implementation manner, the clustering module is further configured to acquire any one cell in the heterogeneous network as a first cell set, where the any one cell is an interference source cell and/or an interfered cell;

the method comprises the steps of obtaining a second cell set, wherein the second cell set comprises corresponding interfered cells when the first cell set is used as an interference source cell;

the first cell set is used for acquiring a third cell set, and the third cell set comprises corresponding interference source cells when the first cell set is used as an interfered cell;

the second cell set is used for acquiring a fourth cell set, and the fourth cell set comprises corresponding interfered cells when the second cell set is used as an interference source cell;

the second cell set is used for acquiring a fifth cell set, and the fifth cell set comprises corresponding interference source cells when the second cell set is used as an interfered cell;

and the method is used for the same analogy, until an Mth cell set is used as an interference source cell, no corresponding interfered cell exists, and no corresponding interference source cell exists when the Mth cell set is used as an interfered cell, the cells from the first cell set to the Mth cell set are divided into the same cluster, wherein M is a positive integer;

or, the method is used for dividing cells in the first cell set to the mth cell set into the same cluster until an interfered cell corresponding to the mth cell set exists in the first cell set to the mth cell set as an interfered cell, and an interfering source cell corresponding to the mth cell set exists in the first cell set to the mth cell set as an interfered cell.

With reference to the first aspect, in a third possible implementation manner, a cluster of cells only includes one interference source cell; the configuration module includes:

a first obtaining unit, configured to obtain a first rate, a second rate, and a third rate in a cluster of cells, where the first rate is a data obtaining rate of a user in the interfering source cell in the cluster of cells, the second rate is a data obtaining rate of a user in the interfered cell that is interfered by the interfering source cell in the cluster of cells, and the third rate is a data obtaining rate of a user in the interfered cell that is not interfered by the interfering source cell in the cluster of cells;

a second obtaining unit, configured to obtain, by using the first rate, the second rate, and the third rate, an almost blank subframe time of the interference source cell corresponding to an optimal network performance index;

and the first configuration unit is used for carrying out ABS configuration on the interference source cell according to the almost blank subframe time.

With reference to the first aspect, in a fourth possible implementation manner, a cluster of cells includes at least two interference source cells; the configuration module includes:

a third obtaining unit, configured to obtain a fourth rate and a fifth rate in a cluster of cells, where the fourth rate is a data obtaining rate of a user in the interference source cell corresponding to any one of the interfered cells in the cluster of cells, and the fifth rate is a data obtaining rate of a user in a cell in the cluster of cells that has no interference relationship with any one of the interfered cells;

a fourth obtaining unit, configured to obtain, by using the fourth rate and the fifth rate, an almost blank subframe time of the interference source cell corresponding to an optimal network performance index;

and the second configuration unit is used for carrying out ABS configuration on the interference source cell according to the almost blank subframe time.

In a second aspect, an embodiment of the present invention provides a configuration device, which is applied to a heterogeneous network, where the heterogeneous network at least includes two cells; the configuration device comprises at least: a processor, a network interface;

the network interface is used for acquiring cell information of a cell and user information of users in the cell, wherein the cell information at least comprises the total number of resource blocks of the cell and the average number of used resource blocks of the cell, and the user information at least comprises the signal-to-interference-and-noise ratio of the users and the average number of occupied resource blocks of the users;

the processor is configured to determine an interfered cell and an interference source cell corresponding to the interfered cell by using the cell information and the user information;

the processor is further configured to cluster cells in the heterogeneous network by using an interference relationship between the interference source cell and the interfered cell;

the processor is further configured to perform Almost Blank Subframe (ABS) configuration on the interfering source cell in a cluster according to an interference relationship between the interfering source cell and the interfered cell in the cluster of cells.

With reference to the second aspect, in a first possible implementation manner, the processor is further configured to obtain a cell load of a first cell by using the cell information of the first cell, where the first cell is any one cell in the heterogeneous network, and the cell load is a ratio of an average number of resource blocks used by the cell to a total number of resource blocks of the cell;

and for detecting whether the cell load of the first cell is greater than a first threshold;

and when the cell load of the first cell is greater than the first threshold, determining interfered users in the first cell, and grouping the interfered users according to a source cell interfered by the interfered users to obtain at least one interfered group, wherein the interfered users are users with a signal-to-interference-and-noise ratio smaller than a second threshold;

the first condition is that the sum of the average number of resource blocks occupied by all the interfered users in the cell is greater than a first threshold, the first threshold is a first macro cell threshold or a first micro cell threshold, the second condition is that the average number of resource blocks occupied by at least one interfered user in the cell is greater than a second threshold, the second threshold is a second macro cell threshold or a second micro cell threshold, and the first threshold is greater than or equal to the second threshold;

and is configured to determine that the first cell is the interfered cell when the first cell satisfies the first condition and/or the second condition;

the processor is further configured to determine, when the interfered cell satisfies the first condition and the second condition, that a source cell interfered by a target interfered user is the interference source cell corresponding to the interfered cell, where the number of resource blocks occupied by the target interfered user in the interfered cell is greater than a second threshold;

and when the interfered cell only satisfies the first condition, the interfered groups are sorted from large to small according to the number of resource blocks occupied by the interfered groups, and the source cells interfered by the first N interfered groups are determined to be the interference source cells corresponding to the interfered cells, wherein N is a positive integer;

and when the interfered cell only satisfies the second condition, determining the source cell with the largest number of occupied resource blocks and interfered by the interfered group as the interference source cell corresponding to the interfered cell.

With reference to the second aspect or the first possible implementation manner of the second aspect, in a second possible implementation manner, the processor is further configured to acquire any one cell in the heterogeneous network as a first cell set, where the any one cell is an interference source cell and/or an interfered cell;

With reference to the second aspect, in a third possible implementation manner, a cluster of cells only includes one interference source cell; the processor is further configured to acquire a first rate, a second rate, and a third rate in a cluster of cells, where the first rate is a data acquisition rate of a user in the interfering source cell in the cluster of cells, the second rate is a data acquisition rate of a user in the interfered cell that is interfered by the interfering source cell in the cluster of cells, and the third rate is a data acquisition rate of a user in the interfered cell that is not interfered by the interfering source cell in the cluster of cells;

and the first rate, the second rate and the third rate are used for obtaining the almost blank subframe time of the interference source cell corresponding to the optimal network performance index;

and the ABS configuration is carried out on the interference source cell according to the almost blank subframe time.

With reference to the second aspect, in a fourth possible implementation manner, a cluster of cells includes at least two interference source cells; the processor is further configured to acquire a fourth rate and a fifth rate in a cluster of cells, where the fourth rate is a data acquisition rate of a user in the interference source cell corresponding to any one of the interfered cells in the cluster of cells, and the fifth rate is a data acquisition rate of a user in a cell in the cluster of cells that has no interference relationship with any one of the interfered cells;

and the first rate and the second rate are used for obtaining the almost blank subframe time of the interference source cell corresponding to the optimal network performance index;

In a third aspect, an embodiment of the present invention provides an ABS configuration method, which is applied to a heterogeneous network, where the heterogeneous network at least includes two cells; the method comprises the following steps:

acquiring cell information of a cell and user information of users in the cell, wherein the cell information at least comprises the total number of resource blocks of the cell and the average number of used resource blocks of the cell, and the user information at least comprises the signal-to-interference-and-noise ratio of the users and the average number of occupied resource blocks of the users;

determining an interfered cell and an interference source cell corresponding to the interfered cell by utilizing the cell information and the user information;

clustering cells in the heterogeneous network by using an interference relationship between the interference source cell and the interfered cell;

and aiming at the interference relation between the interference source cell and the interfered cell in a cluster of cells, performing almost All Blank Subframe (ABS) configuration on the interference source cell in the cluster.

With reference to the third aspect, in a first possible implementation manner, the determining, by using the cell information and the user information, an interfered cell and an interferer cell corresponding to the interfered cell includes:

obtaining the cell load of a first cell by using the cell information of the first cell, wherein the first cell is any one cell in the heterogeneous network, and the cell load is the ratio of the average number of used resource blocks of the cell to the total number of resource blocks of the cell;

detecting whether the cell load of the first cell is greater than a first threshold;

if the cell load of the first cell is greater than a first threshold value, determining interfered users in the first cell, and grouping the interfered users according to a source cell interfered by the interfered users to obtain at least one interfered group, wherein the interfered users are users with a signal-to-interference-and-noise ratio smaller than a second threshold value;

judging whether the first cell meets a first condition and/or a second condition, wherein the first condition is that the sum of the average occupied resource block numbers of all the interfered users in the cell is greater than a first threshold, the first threshold is a first macro cell threshold or a first micro cell threshold, the second condition is that the average occupied resource block number of at least one interfered user in the cell is greater than a second threshold, the second threshold is a second macro cell threshold or a second micro cell threshold, and the first threshold is greater than or equal to the second threshold;

determining the first cell as the interfered cell if the first cell meets the first condition and/or the second condition;

when the interfered cell meets the first condition and the second condition, determining that a source cell interfered by a target interfered user is the interference source cell corresponding to the interfered cell, wherein the number of resource blocks occupied by the target interfered user in the interfered cell is greater than a second threshold;

when the interfered cell only meets the first condition, sequencing the interfered groups from large to small according to the number of resource blocks occupied by the interfered groups, and determining source cells interfered by the first N interfered groups as the interference source cells corresponding to the interfered cells, wherein N is a positive integer;

when the interfered cell only meets the second condition, determining the source cell which occupies the largest number of resource blocks and is interfered by the interfered group as the interference source cell corresponding to the interfered cell.

With reference to the third aspect or the first possible implementation manner of the third aspect, in a second possible implementation manner, the clustering cells in the heterogeneous network by using an interference relationship between the interfering cell and the interfered cell includes:

acquiring any cell in the heterogeneous network as a first cell set, wherein the any cell is an interference source cell and/or an interfered cell;

acquiring a second cell set, wherein the second cell set comprises corresponding interfered cells when the first cell set is used as an interference source cell;

acquiring a third cell set, wherein the third cell set comprises corresponding interference source cells when the first cell set is used as an interfered cell;

acquiring a fourth cell set, wherein the fourth cell set comprises corresponding interfered cells when the second cell set is used as an interference source cell;

acquiring a fifth cell set, wherein the fifth cell set comprises interference source cells corresponding to the second cell set as an interfered cell;

by analogy, until an Mth cell set is used as an interference source cell, a corresponding interfered cell does not exist, and when the Mth cell set is used as an interfered cell, a corresponding interference source cell does not exist, the cells from the first cell set to the Mth cell set are divided into the same cluster, wherein M is a positive integer;

or until an M cell set is used as an interference source cell, a corresponding interfered cell exists in the first cell set to the M cell set, and a corresponding interference source cell exists in the first cell set to the M cell set when the M cell set is used as the interfered cell, and the cells in the first cell set to the M cell set are divided into the same cluster.

With reference to the third aspect, in a third possible implementation manner, a cluster of cells only includes one interference source cell; the performing Almost Blank Subframe (ABS) configuration on the interference source cell in a cluster aiming at an interference relationship between the interference source cell and the interfered cell in the cluster of cells comprises:

acquiring a first rate, a second rate and a third rate in a cluster of cells, wherein the first rate is a data acquisition rate of a user in the interference source cell in the cluster of cells, the second rate is a data acquisition rate of a user interfered by the interference source cell in the interfered cell in the cluster of cells, and the third rate is a data acquisition rate of a user not interfered by the interference source cell in the interfered cell in the cluster of cells;

obtaining the almost blank subframe time of the interference source cell corresponding to the optimal network performance index by utilizing the first rate, the second rate and the third rate;

and performing ABS configuration on the interference source cell according to the almost blank subframe time.

With reference to the third aspect, in a fourth possible implementation manner, a cluster of cells includes at least two interference source cells; the performing Almost Blank Subframe (ABS) configuration on the interference source cell in a cluster aiming at an interference relationship between the interference source cell and the interfered cell in the cluster of cells comprises:

acquiring a fourth rate and a fifth rate in a cluster of cells, wherein the fourth rate is a data acquisition rate of a user of the interference source cell corresponding to any interfered cell in the cluster of cells, and the fifth rate is a data acquisition rate of a user of a cell which does not have an interference relationship with any interfered cell in the cluster of cells;

obtaining the almost blank subframe time of the interference source cell corresponding to the optimal network performance index by utilizing the fourth rate and the fifth rate;

According to the configuration device, the configuration equipment and the configuration method of the ABS, provided by the embodiment of the invention, the interfered cell and the corresponding interference source cell can be determined according to the cell information of each cell and the user information of users in the cell, the interference source cell and the interfered cell are clustered according to the interference relationship between the interfered cell and the interference source cell, and the ABS configuration is carried out on the interference source cell in each cluster of cells. Compared with the prior art only considering two single interference situations of a single cell interfering a single cell and a plurality of cells interfering the single cell, the scheme determines the interfered cell and the interference source cell according to the cell information and the user information, and clusters the interference source cell and the interfered cell according to the interference relation between the interference source cell and the interfered cell, thereby simplifying the complex interference relation, performing ABS configuration on the interference source cell in each cluster, solving the ABS setting problem under the condition of the complex interference relation existing in the plurality of cells, and further improving the overall performance of the network.

Drawings

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

Fig. 1 is a schematic diagram illustrating mutual interference between a macro cell and a micro cell according to an embodiment of the present invention;

FIG. 2 is a schematic structural diagram of an ABS configuration apparatus according to an embodiment of the present invention;

fig. 3 is a schematic structural diagram of a specific implementation manner of an ABS configuration apparatus according to an embodiment of the present invention;

fig. 4 is a schematic structural diagram of another specific implementation manner of a configuration apparatus of an ABS according to an embodiment of the present invention;

fig. 5 is a schematic structural diagram of another specific implementation manner of a configuration apparatus of an ABS according to an embodiment of the present invention;

fig. 6 is a schematic structural diagram of a configuration device according to an embodiment of the present invention;

FIG. 7 is a flowchart of a configuration method of an ABS according to an embodiment of the present invention;

fig. 7a is a schematic diagram illustrating an inter-cell interference relationship according to an embodiment of the present invention;

fig. 7b is a schematic diagram illustrating an inter-cell interference relationship according to an embodiment of the present invention;

fig. 8 is a flowchart of a specific implementation manner of a configuration method of an ABS according to an embodiment of the present invention;

fig. 9a is a flowchart of another specific implementation manner of another ABS configuration method according to an embodiment of the present invention;

fig. 9b is a flowchart of another specific implementation manner of a configuration method of an ABS according to an embodiment of 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.

The technical scheme provided by the embodiment of the invention can be applied to the heterogeneous network, and the heterogeneous network at least comprises two cells. In a heterogeneous network, there may be a plurality of heterogeneous cells coexisting, each cell containing a plurality of users, such as: macro cell, micro cell. A micro cell may be a pico base station (pico) cell, a home base station (femto) cell, and so on. The interference relationship between multiple cells in a heterogeneous network depends on factors such as the relative location to the cell, the type of base station of the cell, and the user distribution of the cell, such as: the signal coverage of the macro cell often overlaps with the signal coverage of the nearby micro cell, so that the macro cell and the micro cell mutually cause signal interference, the macro cell interferes with the pico base station cell, and the home base station cell interferes with the macro cell. There are three most basic interference relationships in heterogeneous networks: a single cell interferes with multiple cells, chain interference between cells, multiple cells interfere with a single cell. For example; as shown in fig. 1, an FBS (home base station) cell interferes with an MBS (macro base station) cell 1, and an FBS (home base station) cell interferes with an MBS (macro base station) cell 2, in which case a single cell interferes with multiple cells; FBS cells interfere with MBS cell 1, MBS cell 1 interferes with PBS (pico base station) cells, which is the case of chain interference between three cells; MBS cell 1 interferes with PBS cell and MBS cell 2 interferes with PBS cell, which is the case where multiple cells interfere with a single cell. By combining the three basic interference relationships, a complex interference relationship among multiple cells in an actual network can be formed. According to the invention, the cells are clustered according to the interference relationship between the interference source cell and the interfered cell, and the ABS configuration of the interference source cell is set for each cluster, so that the ABS configuration is carried out for the complex interference relationship among a plurality of cells.

In this scheme, the configuration device needs to acquire cell information of each cell in the heterogeneous network and user information of users in the cell. In a specific implementation process, a terminal in an active state may measure cell information and user information, the terminal may be a mobile phone, a computer, or other communication device, the terminal may perform RSRP (Reference Signal received power) measurement, CQI (Channel Quality Indicator), or the like, and through the RSRP measurement, the CQI measurement, or the like, the terminal may obtain information such as the number of resource blocks in a cell, a cell ID, an adjacent cell ID of the cell, power of a user, and interference strength of the cell due to interference of other cells, and report and store the measurement result in a configuration device on a network side, and configure the measurement result reported by the device terminal, and obtain the cell information and the user information through means such as statistics, calculation, or the like, so as to facilitate a subsequent analysis process.

The embodiment of the present invention provides an ABS configuration device 200, which is applied to a heterogeneous network, and as shown in fig. 2, the device 200 includes:

an obtaining module 201, configured to obtain cell information of a cell and user information of users in the cell.

The cell information at least comprises the total number of the cell resource blocks and the average number of the cell used resource blocks, and the user information at least comprises the signal-to-interference-and-noise ratio of the user and the average number of the user occupied resource blocks.

A determining module 202, configured to determine an interfered cell and an interference source cell corresponding to the interfered cell by using the cell information and the user information.

A clustering module 203, configured to cluster cells in the heterogeneous network by using an interference relationship between the interference source cell and the interfered cell.

Optionally, the interference strength between the cell in each cluster and the cells in other clusters is less than the interference strength threshold.

A configuration module 204, configured to perform almost blank subframe ABS configuration on the aggressor cell in a cluster according to an interference relationship between the aggressor cell and the victim cell in a cluster of cells.

The configuration device of the ABS provided in the embodiments of the present invention can determine the interfered cell and the corresponding cell of the interference source according to the cell information of each cell and the user information of the users in the cell, cluster the cell of the interference source and the cell of the interference source according to the interference relationship between the interfered cell and the cell of the interference source, and perform the ABS configuration on the cell of the interference source in each cluster of cells. Compared with the prior art only considering two single interference situations of a single cell interfering a single cell and a plurality of cells interfering the single cell, the scheme determines the interfered cell and the interference source cell according to the cell information and the user information, and clusters the interference source cell and the interfered cell according to the interference relation between the interference source cell and the interfered cell, thereby simplifying the complex interference relation, performing ABS configuration on the interference source cell in each cluster, solving the ABS setting problem under the condition of the complex interference relation existing in the plurality of cells, and further improving the overall performance of the network.

Further, as shown in fig. 3, the determining module 202 includes:

a load obtaining unit 2021, configured to obtain a cell load of a first cell by using the cell information of the first cell.

The first cell is any one cell in the heterogeneous network, and the cell load is the ratio of the average number of used resource blocks of the cell to the total number of resource blocks of the cell.

A detecting unit 2022, configured to detect whether a cell load of the first cell is greater than a first threshold.

A grouping unit 2023, configured to determine an interfered user in the first cell when the cell load of the first cell is greater than the first threshold, and group the interfered user according to a source cell interfered by the interfered user to obtain at least one interfered group.

And the interfered users are users with signal-to-interference-and-noise ratios smaller than a second threshold value.

A determining unit 2024, configured to determine whether the first cell meets a first condition and/or a second condition.

The first condition is that the sum of the average occupied resource block numbers of all interfered users in a cell is larger than a first threshold, the first threshold is a first macro cell threshold or a first micro cell threshold, the second condition is that the average occupied resource block number of at least one interfered user in the cell is larger than a second threshold, the second threshold is a second macro cell threshold or a second micro cell threshold, and the first threshold is larger than or equal to the second threshold.

A first determining unit 2025, configured to determine that the first cell is the interfered cell when the first cell satisfies a first condition and/or a second condition.

A second determining unit 2026, configured to determine, when the interfered cell satisfies the first condition and the second condition, a source cell interfered by a target interfered user as the interfering source cell corresponding to the interfered cell.

And the number of resource blocks occupied by the target interfered user in the interfered cell is greater than a second threshold.

A third determining unit 2027, configured to, when the interfered cell only satisfies the first condition, sort the interfered groups from large to small according to the number of resource blocks occupied by the interfered group, and determine that source cells interfered by the first N interfered groups are the interference source cells corresponding to the interfered cells.

Wherein N is a positive integer.

A fourth determining unit 2028, configured to determine, when the interfered cell only satisfies the second condition, a source cell interfered by the interfered group that occupies the largest number of resource blocks as the interfering source cell corresponding to the interfered cell.

The clustering module 203 is further configured to acquire any cell in the heterogeneous network as a first cell set, where the any cell is an interference source cell and/or an interfered cell; the method comprises the steps of obtaining a second cell set, wherein the second cell set comprises corresponding interfered cells when the first cell set is used as an interference source cell; the first cell set is used for acquiring a third cell set, and the third cell set comprises corresponding interference source cells when the first cell set is used as an interfered cell; the second cell set is used for acquiring a fourth cell set, and the fourth cell set comprises corresponding interfered cells when the second cell set is used as an interference source cell; the second cell set is used for acquiring a fifth cell set, and the fifth cell set comprises corresponding interference source cells when the second cell set is used as an interfered cell; and the method is used for analogizing, when the mth cell set is used as the interference source cell, no corresponding interfered cell exists, and when the mth cell set is used as the interfered cell, no corresponding interference source cell exists, and the cells from the first cell to the mth cell are divided into the same cluster, or, when the mth cell set is used as the interference source cell, the corresponding interfered cell exists from the first cell set to the mth cell set, and when the mth cell set is used as the interfered cell, the corresponding interference source cell exists from the first cell set to the mth cell set, and the cells from the first cell set to the mth cell set are divided into the same cluster.

Wherein M is a positive integer. One cell in the heterogeneous network may be an interferer cell; or an interfered cell; the cell may be an interfered cell at the same time as the interfering cell. Therefore, any cell acquired in the heterogeneous network is an interference source cell and/or an interfered cell.

The configuration device of the ABS provided in the embodiments of the present invention can determine the interfered cell and the corresponding cell of the interference source according to the cell information of each cell and the user information of the users in the cell, cluster the cell of the interference source and the cell of the interference source according to the interference relationship between the interfered cell and the cell of the interference source, and perform the ABS configuration on the cell of the interference source in each cluster of cells. Compared with the prior art which only considers two single interference situations of single cell interference and single cell interference of a plurality of cells, the scheme determines the interfered cell and the interference source cell according to the cell information and the user information, and according to the interference relationship between the interference source cell and the interfered cell, clustering is carried out on an interference source cell and an interfered cell, so that the complex interference relationship is simplified, ABS configuration is carried out on the interference source cell in each cluster, the ABS setting problem under the condition that the complex interference relationship exists in a plurality of cells is solved, thereby improving the overall performance of the network and, determining the interfered cell, grouping the interfered users in the interfered cell, according to the grouping result of the interfered users, the complex relation between the interfered cell and the interference source cell is simplified, and the interference source cell is determined more clearly and accurately.

Optionally, when only one interference source cell is included in a cluster of cells, as shown in fig. 4, the configuring module 204 includes:

a first obtaining unit 2041 is configured to obtain a first rate, a second rate, and a third rate in a cluster of cells.

The first rate is a data acquisition rate of a user in an interference source cell in a cluster of cells, the second rate is a data acquisition rate of a user interfered by the interference source cell in an interfered cell in the cluster of cells, and the third rate is a data acquisition rate of a user not interfered by the interference source cell in the interfered cell in the cluster of cells.

A second obtaining unit 2042, configured to obtain, by using the first rate, the second rate, and the third rate, an almost blank subframe time of the interference source cell corresponding to an optimal network performance index.

A first configuring unit 2043, configured to perform ABS configuration on the cell of the interference source according to the almost blank subframe time.

Optionally, when a cluster of cells includes at least two interference source cells, as shown in fig. 5, the configuring module 204 includes:

a third obtaining unit 2044, configured to obtain the fourth rate and the fifth rate in a cluster of cells.

The fourth rate is the data acquisition rate of the user of the interference source cell corresponding to any interfered cell in a cluster of cells, and the fifth rate is the data acquisition rate of the user of the cell which has no interference relation with any interfered cell in the cluster of cells.

A fourth obtaining unit 2045, configured to obtain, by using the fourth rate and the fifth rate, an almost blank subframe time of the interference source cell corresponding to the optimal network performance index.

A second configuring unit 2046, configured to perform ABS configuration on the cell of the interference source according to the almost blank subframe time.

In the scheme, when the network performance index reaches the optimal value, the ratio of the almost-full-blank subframe time of each interference source cell to the total time can be obtained by combining the fourth rate and the fifth rate, and the almost-full-blank subframe time which should be set for the interference source cell can be obtained according to the ratio of the almost-full-blank subframe time to the total time, so that the subsequent ABS configuration process is completed. The KPI may be network overall throughput, network fairness, etc.

The configuration device of the ABS provided in the embodiments of the present invention can determine the interfered cell and the corresponding cell of the interference source according to the cell information of each cell and the user information of the users in the cell, cluster the cell of the interference source and the cell of the interference source according to the interference relationship between the interfered cell and the cell of the interference source, and perform the ABS configuration on the cell of the interference source in each cluster of cells. Compared with the prior art only considering two single interference situations of a single cell interfering a single cell and a plurality of cells interfering the single cell, the scheme determines the interfered cell and the interference source cell according to the cell information and the user information, and clusters the interference source cell and the interfered cell according to the interference relation between the interference source cell and the interfered cell, thereby simplifying the complex interference relation, carrying out ABS configuration aiming at the interference source cell in each cluster, solving the ABS setting problem under the condition that the complex interference relation exists in the plurality of cells, and further improving the overall performance of the network; according to the theoretical optimal network performance index, almost all blank subframe time is obtained to carry out ABS configuration, so that the actual optimization of the network performance index is realized, the overall performance of the network is further optimized, and the overall performance of the network is improved.

The embodiment of the invention provides a configuration device 600, wherein the configuration device 600 is applied to a heterogeneous network, and the heterogeneous network at least comprises two cells; as shown in fig. 6, the configuration apparatus 600 includes at least: the system comprises a processor 601, a network interface 602, a memory 603 and a communication bus 604, wherein the communication bus 604 is used for realizing connection communication among the processor 601, the network interface 602 and the memory 603; in addition, the configuration device 600 may also include at least one user interface 605. The user interface 605 includes a display, a keyboard, a mouse, a touch screen, and the like. Memory 603 may include Cache, possibly including high-speed RAM (random access memory) memory, and may also include non-volatile memory (e.g., disk memory).

In some embodiments, memory 603 stores the following elements, executable modules or data structures, or a subset thereof, or an expanded set thereof:

an operating system 6031 containing various system programs for implementing various basic services and for processing hardware-based tasks;

the application programs 6032 include various application programs for implementing various application services.

The application 6032 includes, but is not limited to, an acquisition module 201, a determination module 202, a clustering module 203, a configuration module 204, a load acquisition unit 2021, a detection unit 2022, a grouping unit 2023, a determination unit 2024, a first determination unit 2025, a second determination unit 2026, a third determination unit 2027, a fourth determination unit 2028, a first acquisition unit 2041, a second acquisition unit 2042, a first configuration unit 2043, a third acquisition unit 2044, a fourth acquisition unit 2045, and a second configuration unit 2046.

Specific implementations of the modules and units in the application 6032 refer to the corresponding modules and units in the embodiments shown in fig. 2-5, which are not described herein again.

Specifically, the network interface 602 is configured to obtain cell information of a cell and user information of users in the cell, where the cell information at least includes a total number of resource blocks in the cell and an average number of resource blocks used by the cell, and the user information at least includes a signal to interference and noise ratio of a user and an average number of resource blocks occupied by the user.

A processor 601, configured to determine an interfered cell and an interference source cell corresponding to the interfered cell by using the cell information and the user information; the heterogeneous network further comprises a cluster unit for clustering cells in the heterogeneous network by using an interference relationship between the interference source cell and the interfered cell; and the method is also used for configuring almost All Blank Subframes (ABS) for the interference source cell in a cluster of cells according to the interference relationship between the interference source cell and the interfered cell.

Further, the processor 601 is further configured to obtain a cell load of a first cell by using the cell information of the first cell, where the first cell is any one cell in the heterogeneous network, and the cell load is a ratio of an average number of resource blocks used by the cell to a total number of resource blocks of the cell; and detecting whether the cell load of the first cell is greater than a first threshold; and determining interfered users in the first cell when the cell load of the first cell is greater than the first threshold, and grouping the interfered users according to a source cell interfered by the interfered users to obtain at least one interfered group, wherein the interfered users are users with a signal-to-interference-and-noise ratio smaller than a second threshold; and the first cell is used for judging whether the first cell meets a first condition and/or a second condition, wherein the first condition is that the sum of the average number of resource blocks occupied by all the interfered users in the cell is greater than a first threshold, the first threshold is a first macro cell threshold or a first micro cell threshold, the second condition is that the average number of resource blocks occupied by at least one interfered user in the cell is greater than a second threshold, the second threshold is a second macro cell threshold or a second micro cell threshold, and the first threshold is greater than or equal to the second threshold; and determining the first cell as the interfered cell when the first cell meets a first condition and/or a second condition; and determining a source cell interfered by a target interfered user as the interference source cell corresponding to the interfered cell when the interfered cell meets the first condition and the second condition, wherein the number of resource blocks occupied by the target interfered user in the interfered cell is greater than a second threshold; and when the interfered cell only satisfies the first condition, the interfered groups are sorted from large to small according to the number of resource blocks occupied by the interfered groups, and the source cells interfered by the first N interfered groups are determined to be the interference source cells corresponding to the interfered cells, wherein N is a positive integer; and determining a source cell, which occupies the largest number of resource blocks and is interfered by the interfered group, as the interference source cell corresponding to the interfered cell when the interfered cell only satisfies the second condition.

Further, the processor is further configured to acquire any cell in the heterogeneous network as a first cell set, where the any cell is an interference source cell and/or an interfered cell; the method comprises the steps of obtaining a second cell set, wherein the second cell set comprises corresponding interfered cells when the first cell set is used as an interference source cell; the first cell set is used for acquiring a third cell set, and the third cell set comprises corresponding interference source cells when the first cell set is used as an interfered cell; the second cell set is used for acquiring a fourth cell set, and the fourth cell set comprises corresponding interfered cells when the second cell set is used as an interference source cell; the second cell set is used for acquiring a fifth cell set, and the fifth cell set comprises corresponding interference source cells when the second cell set is used as an interfered cell; and the method is used for the same analogy, until an Mth cell set is used as an interference source cell, a corresponding interfered cell does not exist, and when the Mth cell set is used as an interfered cell, a corresponding interference source cell does not exist, the cells from the first cell to the Mth cell are divided into the same cluster, wherein M is a positive integer; or, the method is further configured to divide the cells in the first cell set to the mth cell set into the same cluster until the corresponding interfered cell exists in the first cell set to the mth cell set when the mth cell set is used as the interfering cell, and the corresponding interfering cell exists in the first cell set to the mth cell set when the mth cell set is used as the interfered cell.

Optionally, when only one interference source cell is included in a cluster of cells; the processor 601 is further configured to obtain a first rate, a second rate, and a third rate in a cluster of cells, where the first rate is a data obtaining rate of a user in the interfering source cell in the cluster of cells, the second rate is a data obtaining rate of a user in the interfered cell that is interfered by the interfering source cell in the cluster of cells, and the third rate is a data obtaining rate of a user in the interfered cell that is not interfered by the interfering source cell in the cluster of cells; and obtaining almost blank subframe time of the interference source cell corresponding to the optimal network performance index by using the first rate, the second rate and the third rate; and the ABS configuration is carried out on the interference source cell according to the almost blank subframe time.

Optionally, when a cluster of cells includes at least two interference source cells; the processor 601 is further configured to obtain a fourth rate and a fifth rate in a cluster of cells, where the fourth rate is a data obtaining rate of a user in the interference source cell corresponding to any one of the interfered cells in the cluster of cells, and the fifth rate is a data obtaining rate of a user in a cell in the cluster of cells that has no interference relationship with any one of the interfered cells; and the time of the almost blank subframe of the interference source cell corresponding to the optimal network performance index is obtained by utilizing the fourth rate and the fifth rate; and the ABS configuration is carried out on the interference source cell according to the almost blank subframe time.

The configuration device provided in the embodiment of the present invention can determine an interfered cell and a corresponding interference source cell according to cell information of each cell and user information of users in the cell, cluster the interference source cell and the interfered cell according to an interference relationship between the interfered cell and the interference source cell, and perform ABS configuration on the interference source cell in each cluster of cells. Compared with the prior art only considering two single interference situations of a single cell interfering a single cell and a plurality of cells interfering the single cell, the scheme determines the interfered cell and the interference source cell according to the cell information and the user information, and clusters the interference source cell and the interfered cell according to the interference relation between the interference source cell and the interfered cell, thereby simplifying the complex interference relation, carrying out ABS configuration aiming at the interference source cell in each cluster, solving the ABS setting problem under the condition that the complex interference relation exists in the plurality of cells, and further improving the overall performance of the network; moreover, the interfered cell is determined, the interfered users in the interfered cell are grouped, and according to the result of the grouping of the interfered users, the complex relation between the interfered cell and the interference source cell is simplified, so that the interference source cell is determined more clearly and accurately; and according to the theoretical optimal network performance index, almost all blank subframe time is obtained for ABS configuration, so that the actual network performance index optimization is realized, the overall network performance is further optimized, and the overall network performance is improved.

An embodiment of the present invention provides a method for configuring an ABS, which is applied to a heterogeneous network, where the heterogeneous network at least includes two cells, as shown in fig. 7, including:

701, obtaining cell information of a cell and user information of users in the cell.

The cell information at least includes the total number of Resource Blocks (RBs) in the cell and the average number of Resource blocks used in the cell, the user information at least includes the signal-to-interference-and-noise ratio of the user and the average number of Resource blocks occupied by the user, and the user information may also include the interference strength of the cell interfering with the user to the user, the cell identifier of the cell interfering with the user, and the like.

It should be noted that a cell may be divided into a plurality of regions, each of which is referred to as a geographic pixel. The user information of the users in the cell may also be geographical pixel information of geographical pixels in the cell, and the geographical pixel information at least includes a signal to interference and noise ratio of the geographical pixels and the number of resource blocks occupied by the geographical pixels. In the scheme, the processing method of the geographic pixel information is the same as that of the user information.

And 702, determining an interfered cell and an interference source cell corresponding to the interfered cell by using the cell information and the user information.

Wherein, cell load can be obtained by using cell information; by utilizing the user information, the interfered users interfered by the cell can be determined; therefore, the interfered cell and the interference source cell corresponding to the interfered cell are determined according to the cell load and the related information of the interfered user, such as the number of resource blocks occupied by the interfered user.

The number of the interfering cells corresponding to one interfered cell is not limited, and may be one or more. It should be noted that a cell may be both an interfered cell and an interfering cell.

703, clustering the cells in the heterogeneous network by using the interference relationship between the interference source cell and the interfered cell.

Wherein, the cells with interference relationship are divided into the same cluster. Interference relationships between cells in the same cluster can form a connected mesh relationship, such as: as shown in fig. 7a, cells 1-7 belong to the same cluster, and the arrow points indicate interference, i.e., cell 1 interferes with cell 5, and cell 2 interferes with cell 1, as can be seen from fig. 7a, one cell may be a simple interference source cell, e.g., cell 3; a cell may also be a purely interfered cell, such as cell 5; a cell may also be both an interferer cell and an interfered cell, such as cell 7; according to the interference relationship among the cells 1-7, the cells 1-7 can be determined to be divided into a cluster; wherein, the interference intensity among the cells 1-7 is larger than the threshold value of the interference intensity.

In the scheme, the cells having an interference relationship and an inter-cell interference strength greater than or equal to an interference strength threshold are divided into the same cluster, a cell may be determined first, the cell is added to the cluster where the cell is located as an interfered cell corresponding to an interference source cell, the cell is also added to the cluster where the cell is located as an interference source cell corresponding to the interfered cell, meanwhile, the cell having an interference relationship with the interfered cell corresponding to the cell as an interference source cell is also added to the cluster where the cell is located, the cell having an interference relationship with the cell as an interference source cell corresponding to the interfered cell is also added to the cluster where the cell is located, and so on, all the cells in the cluster may be determined. Any one cell in the same cluster has an interference relationship with at least one other cell in the same cluster, and no interference relationship exists between cells in different clusters; or, an interference relationship exists between any one cell in the same cluster and at least one other cell in the same cluster, and the interference strength between the cells in different clusters does not exceed a preset interference strength threshold. As shown in fig. 7b, the cells 1-10 are divided into two clusters, where one cluster is defined as the cell 1-7, and the other cluster is defined as the cell 8-10, and any cell in the cells 1-7 has no interference relationship with any cell in the cells 8-10 or the interference strength does not exceed the interference strength threshold.

In a specific implementation process, cells may be clustered according to connectivity of interference relationships between the cells, and a section of pseudo code for clustering is given below:

function name: function view _ check

Inputting: DI (interference source cell), Current Cluster (CLUSTER), interference relationship, cell Attribute (DI or victim)

And (3) outputting: cell set of current cluster

Wherein the pseudo code describes acquiring any current DI (Dominant interference cell), traversing neighboring cells around the DI, and adding the cell interfered by the DI into the current CLUSTER (CLUSTER), if the cell interfered by the DI is also a DI, then the cell interfered by the victim _ c will also be added into the current CLUSTER CLUSTER; by continuously calling the recursive function of function view _ check, the cells divided into a cluster can be obtained. The cell attribute of one cell may be (victim), or may be an interference source cell, or may be both an interfered cell and an interference source cell.

And 704, performing Almost Blank Subframe (ABS) configuration on the interference source cell in a cluster aiming at the interference relation between the interference source cell and the interfered cell in the cluster of cells.

The cell clustering is used for simplifying the complex interference relationship between cells, and ABS (Almost all blank subframe) configuration is carried out on an interference source cell in a cluster of cells aiming at the interference relationship between the interference source cell and an interfered cell. When performing ABS configuration on an aggressor cell, on one hand, the signal quality and network performance of the victim cell are considered, and on the other hand, the signal quality and network performance requirements of the aggressor cell are considered. When only one interference source cell exists in a cluster of cells, only the interference source cell needs to be set; when at least two interference source cells exist in a cluster of cells, all the interference source cells in the cluster of cells need to be combined to perform ABS configuration on all the interference source cells in the cluster of cells.

Optionally, when performing ABS configuration on the cell of the interference source, the time of almost blank subframes is obtained with a goal of achieving an optimal KPI (key performance Indicator), so as to perform ABS configuration on the cell of the interference source. KPIs may be a performance indicator of overall throughput, fairness, etc.

The configuration method of the ABS provided in the embodiments of the present invention can determine the interfered cell and the corresponding cell of the interference source according to the cell information of each cell and the user information of the users in the cell, cluster the cell of the interference source and the cell of the interference source according to the interference relationship between the interfered cell and the cell of the interference source, and perform the ABS configuration on the cell of the interference source in each cluster of cells. Compared with the prior art only considering two single interference situations of a single cell interfering a single cell and a plurality of cells interfering the single cell, the scheme determines the interfered cell and the interference source cell according to the cell information and the user information, and clusters the interference source cell and the interfered cell according to the interference relation between the interference source cell and the interfered cell, thereby simplifying the complex interference relation, performing ABS configuration on the interference source cell in each cluster, solving the ABS setting problem under the condition of the complex interference relation existing in the plurality of cells, and further improving the overall performance of the network.

Further, on the basis of the scheme shown in fig. 7, an embodiment of the present invention further provides a specific scheme of an ABS configuration method, in the present scheme, an execution process of 702-703 in the scheme shown in fig. 7 is further refined, so as to accurately determine an interfered cell according to a cell load and an interfered user in the cell, and determine an interferer cell corresponding to the interfered cell by using different methods according to different types of interferer cells; wherein 702 can be specifically implemented as 7021 and 7028, and 703 can be specifically implemented as 7031 and 7036, as shown in fig. 8, including:

7021, the cell load of the first cell is obtained by using the cell information of the first cell.

The first cell is any one cell in the heterogeneous network, and the cell load is the ratio of the average number of used resource blocks of the cell to the total number of resource blocks of the cell. Such as: l for cell load_cIndicating that the average number of resource blocks used by a cell is R_aIndicating that the total number of resource blocks in a cell is N_cIs shown, then L_c＝R_a/N_c。

7022, it is detected whether a cell load of the first cell is greater than a first threshold.

The first threshold is a threshold of cell load, and if the cell load is greater than the first threshold, it indicates that the cell may be an interfered cell and further detection is required; and if the cell load is less than or equal to the first threshold value, determining that the cell is not the interfered cell. The first threshold value can be set according to historical experience statistics, and can also be directly set by an operator of the configuration equipment.

7023, if the cell load of the first cell is greater than a first threshold, determining interfered users in the first cell, and grouping the interfered users according to a source cell interfered by the interfered users to obtain at least one interfered group.

The interfered user is a user with a signal to interference and noise ratio smaller than a second threshold, the second threshold is a critical value for judging whether the user is interfered, and the signal to interference and noise ratio of the user is smaller than the second threshold, so that the user can be determined to be interfered by signals of an adjacent cell; and if the signal-to-interference-and-noise ratio of the user is larger than or equal to the second threshold value, determining that the user is not interfered by the signal of the adjacent cell.

The interfered users interfered by the same or multiple same interference source cells can be classified into an interfered group, for example: the cell 1 comprises users 1-5, and the adjacent cells of the cell 1 are a cell 2 and a cell 3, wherein the users 3 and 4 are both interfered by the cell 2, so the users 3 and 4 are divided into an interference group A; both user 5 and user 2 are only interfered by cell 2 and cell 3, so user 5 and user 2 are grouped into interference group B.

And if the cell load of the cell is less than or equal to the first threshold, determining that the cell is not the interfered cell.

7024, it is determined whether the first cell satisfies the first condition and/or the second condition.

The cell can be divided into a macro cell and a micro cell, when the cell is the macro cell, the first condition is that the number of resource blocks averagely occupied by interfered users in the cell is larger than a first macro cell threshold, the second condition is that the number of the resource blocks averagely occupied by at least one interfered user in the cell is larger than a second macro cell threshold, and the first macro cell threshold is larger than or equal to the second macro cell threshold; when the cell is a micro cell, the first condition is that the number of resource blocks averagely occupied by the interfered users in the cell is larger than a first micro cell threshold, the second condition is that the number of resource blocks averagely occupied by at least one interfered user in the cell is larger than a second micro cell threshold, and the first micro cell threshold is larger than or equal to the second micro cell threshold.

And if the cell does not meet the first condition and/or the second condition, determining that the cell is not the interfered cell.

7025, if the first cell satisfies the first condition and/or the second condition, determining the first cell as the interfered cell.

When the cell only meets a first condition, determining the cell as an interfered cell; when the cell only meets the second condition, determining the cell as an interfered cell; and when the cell simultaneously meets the first condition and the second condition, determining the cell as the interfered cell.

7026, when the interfered cell satisfies the first condition and the second condition, determining a source cell interfered by a target interfered user as the interference source cell corresponding to the interfered cell.

And the number of resource blocks occupied by the target interfered user in the interfered cell is greater than a second threshold. That is, when the interfered cell satisfies both the first condition and the second condition, the cell from which the interfered user in the interfered cell satisfying the second condition is interfered is the cell from which the interfered user is interfered. Since the user information of the users in the cell may further include the cell-to-user interference strength of the interfering user, the interference strength of the interfering source cell to the interfered cell may be the interference strength received by the interfered user in the interfered cell satisfying the second condition. Such as: the cell 1 includes users 1-5, the user 3 is an interfered user, and the user 3 is interfered by the cell 2, because the number of resource blocks occupied by the user 3 in the cell 1 is greater than the second threshold, it is determined that the cell 2 is an interference source cell of the cell 1. The number of the interference source cells may also be one, or may also be multiple, for example: the cell 1 includes users 1-5, the user 3 is an interfered user, and the user 3 is interfered by the cells 2 and 3, because the number of resource blocks occupied by the user 3 in the cell 1 is greater than the second threshold, it is determined that the cells 2 and 3 are interference source cells of the cell 1, that is, there are two interference source cells of the cell 1, that is, the two interference source cells are the cells 2 and 3.

7027, when the interfered cell only satisfies the first condition, the interfered groups are sorted from large to small according to the number of resource blocks occupied by the interfered groups, and the source cells interfered by the first N interfered groups are determined to be the interference source cells corresponding to the interfered cells.

Wherein the users in the cell are grouped and get an interfered group 7023. When the interfered cell only meets the first condition, the interfered groups are sorted from large to small according to the number of resource blocks occupied by the interfered groups, and source cells interfered by the first N interfered groups are selected from the interfered groups arranged from large to small to serve as interference source cells of the interfered cells, wherein N is a positive integer. Because the user information of the users in the cell may further include the interference strength of the cell of the interfering user to the user, the interference strength of the cell of the interfering source to the interfered cell may be the interference strength of the first N interfered groups selected from the interfered groups. Such as: the cell 1 includes users 1-15, wherein users 1-4 are in an interfered group a, users 5-7 are in an interfered group B, users 8-10 are in an interfered group C, users 11-15 are in an interfered group D, the numbers of resource blocks occupied by the interfering group a, the interfering group B, the interfering group C and the interfering group D are respectively 12, 10, 13 and 20, the interference group D, the interfering group C, the interfering group a and the interfering group B are obtained by sequencing according to the number of resource blocks occupied by the interfering group, N is 2, the source cell of interference suffered by the interfering group D is cell 2, the source cells of interference suffered by the interfering group C are cell 2 and cell 3, and the source cells of interference corresponding to the cell 1 are cell 2 and cell 3.

7028, when the interfered cell only satisfies the second condition, determining a source cell with the largest number of occupied resource blocks, where the interfered group is interfered, as the interfering source cell corresponding to the interfered cell.

And when the interfered cell only meets the second condition, taking the source cell which occupies the interfered group with the largest number of resource blocks in the interfered cell and is interfered by the interfered group as the interference source cell of the interfered cell. Because the user information of the users in the cell may further include the interference strength of the cell of the interfering user to the user, the interference strength of the interfering source cell to the interfered cell may be the interference strength received by the interfered group occupying the largest number of resource blocks in the interfered cell. Such as: the cell 1 includes users 1-10, wherein users 1-4 are in an interfered group a, users 5-7 are in an interfered group B, users 8-10 are in an interfered group C, the numbers of resource blocks occupied by the interfering group a, the interfering group B and the interfering group C are 12, 10 and 13 respectively, the interfered group occupying the largest number of resource blocks is the interfering group C, the source cells interfered by the interfering group C are the cell 2 and the cell 3, and the interfering source cells corresponding to the cell 1 are the cell 2 and the cell 3.

7031, any cell in the heterogeneous network is acquired as a first cell set.

Wherein, one cell in the heterogeneous network may be an interference source cell; or an interfered cell; the cell may be an interfered cell at the same time as the interfering cell. Therefore, any cell acquired in the heterogeneous network is an interference source cell and/or an interfered cell.

7032, a second set of cells is obtained.

And the second cell set comprises corresponding interfered cells when the first cell set is used as an interference source cell.

7033, a third set of cells is obtained.

And the third cell set comprises corresponding interference source cells when the first cell set is used as an interfered cell.

7034, a fourth set of cells is obtained.

And the fourth cell set comprises interfered cells corresponding to the second cell set as the interference source cell.

7035, a fifth set of cells is obtained.

And the fifth cell set comprises an interference source cell corresponding to the second cell set as the interfered cell.

7036, the same process is repeated until there is no corresponding interfered cell when the mth cell set is used as an interfering cell, and there is no corresponding interfering cell when the mth cell set is used as an interfered cell, and the cells from the first cell to the mth cell are divided into the same cluster, or until there is a corresponding interfered cell when the mth cell set is used as an interfering cell in the first cell set to the mth cell set, and the corresponding interfering cell when the mth cell set is used as an interfered cell in the first cell set to the mth cell set, and the cells from the first cell set to the mth cell set are divided into the same cluster.

Wherein M is a positive integer. The cells having interference relationship and having inter-cell interference strength greater than or equal to the interference strength threshold are divided into the same cluster, one cell can be selected first, namely a first cell set, taking the cell as an interfered cell corresponding to an interference source cell as a second cell set, taking the cell as an interference source cell corresponding to the interfered cell as a third cell set, taking the cell in the second cell set as an interfered cell corresponding to the interference source cell as a fourth cell set, taking the second cell set as an interference source cell corresponding to the interfered cell as a fifth cell set, and so on until the M cell set as the interference source cell has no corresponding interfered cell, and dividing the cells in the first cell set to the Mth cell set into the same cluster until the Mth cell set is used as the interfered cell and no interference source cell exists. One cell set may include one cell or a plurality of cells.

Or, a cell, that is, a first cell set, may be selected first, an interfered cell corresponding to the cell as an interference source cell is taken as a second cell set, an interference source cell corresponding to the cell as an interfered cell is also taken as a third cell set, a cell in the second cell set is taken as an interfered cell corresponding to the interference source cell is taken as a fourth cell set, the second cell set is taken as an interference source cell corresponding to the interfered cell is taken as a fifth cell set, and so on, until the corresponding interfered cells exist in the first cell set to the Mth cell set when the Mth cell set is taken as the interference source cell, and the corresponding interference source cells exist in the first cell set to the Mth cell set when the Mth cell set is taken as the interfered cell, and the cells in the first cell set to the Mth cell set are divided into the same cluster.

It should be noted that, until an mth cell set is used as the interfering source cell, a corresponding interfered cell exists in the first to mth cell sets, and the mth cell set does not exist as the interfering source cell corresponding to the interfered cell, and a case that the cells in the first to mth cell sets are divided into the same cluster also belongs to the protection range of the present scheme. Similarly, the situation that the cells in the first cell set to the mth cell set are divided into the same cluster also belongs to the protection range of the scheme until the corresponding interfered cell does not exist when the mth cell set is used as the interfering cell, and the corresponding interfering cell exists in the first cell set to the mth cell set when the mth cell set is used as the interfered cell. That is to say, the above-mentioned several cases of division and recombination all belong to the protection scope of the present scheme.

Such as: as shown in fig. 7b, the interference relationship between the cells 1-10 is obtained, and the cell 1 is obtained as the interfered cell 5 corresponding to the cell 1 as the interference source cell, and the cell 1 is obtained as the interference source cell 2 corresponding to the interfered cell; when the cell 5 is used as an interference source cell, no corresponding interfered cell exists, and when the cell 5 is used as an interfered cell, the corresponding interference source cell also has a cell 4; the cell 2 is used as an interfered cell corresponding to the interference source cell and also used as a cell 7, and the cell 2 is used as an interfered cell without a corresponding interference source cell; the cell 4 is used as an interfered cell corresponding to the interference source cell, except the cell 5, other interfered cells do not exist, and the cell 4 is also used as an interference source cell corresponding to the interfered cell and also used as a cell 3; when the cell 7 is used as an interference source cell, the corresponding interfered cell is the cell 6, and when the cell 7 is used as an interfered cell, the corresponding interference source cell does not have other interference source cells except the cell 2 and the cell 3; when the cell 6 is used as an interference source cell, no corresponding interfered cell exists, and when the cell 6 is used as an interfered cell, no other interference source cell exists except the cell 7; cells 1-7 are divided into cluster a. Acquiring a cell 8, wherein an interfered cell corresponding to the cell 8 as an interference source cell is a cell 9, and an interference source cell corresponding to the cell 8 as an interfered cell is a cell 10; when the cell 9 is used as an interference source cell, the corresponding interfered cell does not have other interfered cells except the cell 10; when the cell 10 is an interfered cell, the corresponding interference source cell does not have other interference source cells except the cell 9, so the cells 8-10 are divided into the cluster B.

It should be noted that there is a case where one cell is clustered by itself; there are also situations where the first set of cells does not have a corresponding second set of cells or third set of cells. That is, a cluster includes at least one set of cells.

It should be further noted that one cell only exists in one cluster, that is, the same cell cannot exist in multiple clusters at the same time, and any one cell in the same cluster has an interference relationship with at least one other cell in the same cluster, and the cell in each cluster does not have an interference relationship with the cells in other clusters; or, one cell only exists in one cluster, that is, the same cell cannot exist in multiple clusters at the same time, and any one cell in the same cluster has an interference relationship with at least one other cell in the same cluster, and the interference strength between the cell in each cluster and the cells in other clusters is less than the interference strength threshold.

7031 the method for clustering cells specifically adopted in 7036 includes combing the interference relationship among all cells in a heterogeneous network, clustering the cells in the heterogeneous network, and simplifying the interference relationship among all cells in the heterogeneous network into the interference relationship among the cells in each cluster, so as to perform ABS configuration on the interference source cell in each cluster according to the interference relationship among the cells in each cluster, thereby simplifying the configuration process.

The configuration method of the ABS provided in the embodiments of the present invention can determine the interfered cell and the corresponding cell of the interference source according to the cell information of each cell and the user information of the users in the cell, cluster the cell of the interference source and the cell of the interference source according to the interference relationship between the interfered cell and the cell of the interference source, and perform the ABS configuration on the cell of the interference source in each cluster of cells. Compared with the prior art only considering two single interference situations of a single cell interfering a single cell and a plurality of cells interfering the single cell, the scheme determines the interfered cell and the interference source cell according to the cell information and the user information, and clusters the interference source cell and the interfered cell according to the interference relation between the interference source cell and the interfered cell, thereby simplifying the complex interference relation, carrying out ABS configuration aiming at the interference source cell in each cluster, solving the ABS setting problem under the condition that the complex interference relation exists in the plurality of cells, and further improving the overall performance of the network; and determining the interfered cell, grouping the interfered users in the interfered cell, and simplifying the complex relation between the interfered cell and the interference source cell according to the result of the grouping of the interfered users, thereby more clearly and accurately determining the interference source cell.

Further, on the basis of the scheme shown in fig. 8, an embodiment of the present invention further provides a specific scheme of an ABS configuration method, where in the scheme, for a situation that one cluster of cells only includes one interference source cell, an execution process of 704 in the scheme shown in fig. 8 is further refined, so that almost all blank subframe time of the interference source cell in the cluster of cells can be obtained through an ideal optimal network performance index, thereby optimizing ABS configuration of an actual network to obtain optimal network performance; among them, 704 may be embodied as 7041a-7043a, as shown in fig. 9a, including:

7041a, a first rate, a second rate and a third rate in a cluster of cells are obtained.

It should be noted that, in the present solution, the data acquisition rate of the user may be acquired to perform the subsequent process, and the average data acquisition rate in the geographic pixel may also be acquired.

7042a, obtaining an almost blank subframe time of the interference source cell corresponding to an optimal network performance index by using the first rate, the second rate and the third rate.

According to the scheme, when the network performance index reaches an optimal value, the proportion value of the almost-full-blank subframe time to the total time can be obtained by combining the first rate, the second rate and the third rate, the almost-full-blank subframe time which is required to be set for the interference source cell can be obtained according to the proportion value of the almost-full-blank subframe time to the total time, and therefore the subsequent ABS configuration process is completed. The KPI may be a network throughput rate, a network fairness, etc., and the network throughput rate may be defined as

Network fairness can be defined as

Such as: when only one interference source cell exists in a cluster of cells, if KPI is the total network throughput, the following formula may be used:

wherein, U_∑Theta is the ratio of the almost blank subframe time of the interference source cell to the total time for the total throughput rate of the network, R_iObtaining the data acquisition rate (namely, the first rate) for the ith user or the ith geographic pixel, wherein the data acquisition rate can be obtained according to the signal-to-interference-and-noise ratio and the number of occupied resource blocks, T_DISet of users or set of geographical pixels serving the cell of the interferer, T_{vict_inner}Set of users or set of geographical pixels not interfered by the interfering source cell, T, serving the interfered cell_{vict_cre}A set of users or a set of geographical pixels served by the interfered cell and interfered by the interfering source cell,

ith user or ith geography serving interfered cell and not interfered by interference source cellThe data acquisition rate within the pixel (i.e. the second rate),

when the total throughput rate of the network takes the maximum value, the data acquisition rate (i.e., the third rate) in the ith user or the ith geographic pixel, which is served by the interfered cell and interfered by the interference source cell, can obtain theta according to a formula, so that the almost blank subframe time of the interference source cell can be obtained according to theta.

It should be noted that, in addition to obtaining the almost blank subframe time by using one optimal KPI (Key Performance Indicator), such as the network throughput, the network fairness, etc., an optimal KPI combination can be obtained by using multiple optimal KPIs, so as to obtain the almost blank subframe time, for example: and carrying out weighted summation on the plurality of KPIs, and obtaining almost blank subframe time under the condition of optimal weighted summation.

7043a, performing ABS configuration on the cell of the interferer according to the almost blank subframe time.

The ABS configuration is performed on the cell of the interference source according to the obtained almost blank subframe time, and the specific configuration method of the ABS is mature in the prior art and is not described herein again.

Optionally, for a situation that a cluster of cells includes at least two interference source cells, the almost blank subframe time of each interference source cell in the cluster of cells can be obtained through an ideal optimal network performance index, so that ABS configuration of an actual network is optimized to obtain optimal network performance; 704 of the scheme shown in FIG. 8 may be embodied as 7041b-7043b, as shown in FIG. 9b, including:

7041b, a fourth rate and a fifth rate in a cluster of cells are obtained.

The fourth rate is the data acquisition rate of the user of the interference source cell corresponding to any interfered cell in a cluster of cells, and the fifth rate is the data acquisition rate of the user of the cell which has no interference relation with any interfered cell in a cluster of cells.

7042b, obtaining almost blank subframe time of the interference source cell corresponding to the optimal network performance index by using the fourth rate and the fifth rate.

In the scheme, when the network performance index reaches the optimal value, the ratio of the almost-full-blank subframe time of each interference source cell to the total time can be obtained by combining the fourth rate and the fifth rate, and the almost-full-blank subframe time which should be set for the interference source cell can be obtained according to the ratio of the almost-full-blank subframe time to the total time, so that the subsequent ABS configuration process is completed. The KPI may be a network throughput rate, a network fairness, etc., and the network throughput rate may be defined as

Network fairness can be defined as

Such as: when a cluster of cells has multiple interference source cells, if KPI is the total network throughput, the following formula may be used:

wherein, U_∑For total throughput of the network, θ_kThe ratio of almost blank subframe time of an interference source cell k to the total time, C is a cell set in a cluster of cells, DI (C) is a set of interfered cells interfered by a cell C as an interference source cell, Vict (C) is a set of interference source cells corresponding to the cell C as the interfered cell, T_DI(c)Set of users or set of geographical pixels served by interfered cell interfering with cell c as interfering source cell, T_Vict(c)Set of users served by the corresponding interference source cell for cell c as the interfered cellOr a set of geographical pixels,

the data acquisition rate for the ith user or the ith geographical pixel in a cell that has no interference relationship with cell c (i.e. the fifth rate),taking the cell c as an interfered cell, obtaining the data obtaining rate (namely, the fourth rate) in the ith user or the ith geographic pixel served by the corresponding interference source cell, wherein the data obtaining rate can be obtained according to the signal-to-interference-and-noise ratio and the number of occupied resource blocks, and when the total throughput rate of the network obtains the maximum value, obtaining theta according to a formula_kAccording to theta_kAnd obtaining the almost blank subframe time of each interference source cell.

It should be noted that, in addition to obtaining the almost blank subframe time of each interference source cell by using an optimal network performance index, such as the network throughput, the network fairness, etc., an optimal KPI combination can be obtained by using multiple optimal KPIs, so as to obtain the almost blank subframe time of each interference source cell, for example: and performing weighted summation on the plurality of KPIs, and obtaining the almost blank subframe time of each interference source cell under the condition of optimal weighted summation.

7043b, according to the almost blank subframe time, performing ABS configuration on the cell of the interferer.

And performing ABS configuration on each interference source cell according to the obtained almost blank subframe time, wherein the specific configuration method of the ABS is mature in the prior art and is not described herein any more.

The configuration method of the ABS provided in the embodiments of the present invention can determine the interfered cell and the corresponding cell of the interference source according to the cell information of each cell and the user information of the users in the cell, cluster the cell of the interference source and the cell of the interference source according to the interference relationship between the interfered cell and the cell of the interference source, and perform the ABS configuration on the cell of the interference source in each cluster of cells. Compared with the prior art only considering two single interference situations of a single cell interfering a single cell and a plurality of cells interfering the single cell, the scheme determines the interfered cell and the interference source cell according to the cell information and the user information, and clusters the interference source cell and the interfered cell according to the interference relation between the interference source cell and the interfered cell, thereby simplifying the complex interference relation, carrying out ABS configuration aiming at the interference source cell in each cluster, solving the ABS setting problem under the condition that the complex interference relation exists in the plurality of cells, and further improving the overall performance of the network; and according to the theoretical optimal network performance index, almost all blank subframe time is obtained for ABS configuration, so that the actual network performance index optimization is realized, the overall network performance is further optimized, and the overall network performance is improved.

The embodiments in the present specification are described in a progressive manner, and the same and similar parts among the embodiments are referred to each other, and each embodiment focuses on the differences from the other embodiments. In particular, for the apparatus embodiment, since it is substantially similar to the method embodiment, it is relatively simple to describe, and reference may be made to some descriptions of the method embodiment for relevant points.

It will be understood by those skilled in the art that all or part of the processes of the methods of the embodiments described above can be implemented by a computer program, which can be stored in a computer-readable storage medium, and when executed, can include the processes of the embodiments of the methods described above. The storage medium may be a magnetic disk, an optical disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), or the like.

The above description is only for the specific embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. An ABS configuration device is applied to a heterogeneous network, and is characterized in that the heterogeneous network at least comprises two cells; the device comprises:

2. The apparatus of claim 1, wherein the determining module comprises:

3. The apparatus according to claim 1 or 2, wherein the clustering module is further configured to acquire any one cell in the heterogeneous network as the first cell set, where the any one cell is an interference source cell and/or an interfered cell;

or, the method is used for dividing cells in the first cell set to the mth cell set into the same cluster until an interfered cell corresponding to the mth cell set exists in the first cell set to the mth cell set as an interfered cell, and an interfering source cell corresponding to the mth cell set exists in the first cell set to the mth cell set as an interfered cell, where M is a positive integer.

4. The apparatus of claim 1, wherein only one of the aggressor cells is included in a cluster of cells; the configuration module includes:

5. The apparatus of claim 1, wherein a cluster of cells comprises at least two of the aggressor cells; the configuration module includes:

6. An ABS configuration device is applied to a heterogeneous network, and is characterized in that the heterogeneous network at least comprises two cells; the configuration device comprises at least: a processor, a network interface;

7. The configuration device according to claim 6, wherein the processor is further configured to obtain a cell load of a first cell by using the cell information of the first cell, where the first cell is any one cell in the heterogeneous network, and the cell load is a ratio of an average number of used resource blocks of the cell to a total number of resource blocks of the cell;

8. The device according to claim 6 or 7, wherein the processor is further configured to acquire any one cell in the heterogeneous network as the first cell set, where the any one cell is an interfering source cell and/or an interfered cell;

9. The apparatus according to claim 6, wherein only one of the aggressor cells is included in a cluster of cells; the processor is further configured to acquire a first rate, a second rate, and a third rate in a cluster of cells, where the first rate is a data acquisition rate of a user in the interfering source cell in the cluster of cells, the second rate is a data acquisition rate of a user in the interfered cell that is interfered by the interfering source cell in the cluster of cells, and the third rate is a data acquisition rate of a user in the interfered cell that is not interfered by the interfering source cell in the cluster of cells;

10. The apparatus according to claim 6, wherein a cluster of cells includes at least two of the aggressor cells; the processor is further configured to acquire a fourth rate and a fifth rate in a cluster of cells, where the fourth rate is a data acquisition rate of a user in the interference source cell corresponding to any one of the interfered cells in the cluster of cells, and the fifth rate is a data acquisition rate of a user in a cell in the cluster of cells that has no interference relationship with any one of the interfered cells;

11. An ABS configuration method is applied to a heterogeneous network, and is characterized in that the heterogeneous network at least comprises two cells; the method comprises the following steps:

12. The method of claim 11, wherein the determining, by using the cell information and the user information, an interfered cell and an interferer cell corresponding to the interfered cell comprises:

13. The method of claim 11 or 12, wherein the clustering cells in the heterogeneous network by using the interference relationship between the interfering cell and the interfered cell comprises:

or until an mth cell set exists in the first to mth cell sets as an interfering source cell, and a corresponding interfering source cell exists in the first to mth cell sets as an interfering source cell, dividing the cells in the first to mth cell sets into the same cluster, wherein M is a positive integer.

14. The method of claim 11, wherein only one of the aggressor cells is included in a cluster of cells; the performing Almost Blank Subframe (ABS) configuration on the interference source cell in a cluster aiming at an interference relationship between the interference source cell and the interfered cell in the cluster of cells comprises:

15. The method of claim 11, wherein a cluster of cells comprises at least two of the aggressor cells; the performing Almost Blank Subframe (ABS) configuration on the interference source cell in a cluster aiming at an interference relationship between the interference source cell and the interfered cell in the cluster of cells comprises: