CN109874177B

CN109874177B - Inter-cell interference coordination method, device and server

Info

Publication number: CN109874177B
Application number: CN201910257597.0A
Authority: CN
Inventors: 金星
Original assignee: Hytera Communications Corp Ltd
Current assignee: Hytera Communications Corp Ltd
Priority date: 2019-04-01
Filing date: 2019-04-01
Publication date: 2023-02-10
Anticipated expiration: 2039-04-01
Also published as: CN109874177A

Abstract

The application provides a method, a device and a server for coordinating interference among cells, wherein the method comprises the following steps: determining a strongest interference neighbor cell of the edge user terminal, and determining a frequency domain resource used by the strongest interference neighbor cell; determining frequency domain resources, the overlapping degree of which with frequency domain resources used by a strongest interference neighboring cell does not exceed a preset overlapping degree, from frequency domain resources pre-distributed to a cell to which an edge user terminal belongs, and taking the frequency domain resources as target frequency domain resources; and adjusting the frequency domain resources used by the edge user terminal to be target frequency domain resources. In the method, the interference of the strongest interference neighbor cell to the edge user terminal can be reduced, and the interference coordination effect is obviously improved.

Description

Inter-cell interference coordination method, device and server

Technical Field

The present application relates to the field of communications technologies, and in particular, to a method, an apparatus, and a server for coordinating inter-cell interference.

Background

In an LTE (Long Term Evolution ) system, different cells use the same frequency band resource, which may cause inter-cell interference, especially severe co-frequency interference of cell edge users. In order to reduce the influence of the same frequency interference on edge users, an inter-cell interference coordination algorithm (i.e., ICIC algorithm) is commonly used at present, and the behavior of a plurality of cells is coordinated by setting certain constraints on uplink/downlink resources (e.g., frequency resources/transmission power, etc.), so as to achieve the purpose of reducing the inter-cell interference.

However, the ICIC algorithm cannot distinguish which cell has the largest interference to the edge user, and therefore, the interference coordination effect cannot be obviously improved by pertinently reducing the interference to the edge user from the cell having the largest interference.

Disclosure of Invention

In order to solve the above technical problems, embodiments of the present application provide a method, an apparatus, and a server for coordinating inter-cell interference, so as to achieve the purposes of reducing interference of a strongest interference neighboring cell to an edge user terminal and obviously improving an interference coordination effect, where the technical scheme is as follows:

an inter-cell interference coordination method, comprising:

determining a strongest interference neighbor cell of an edge user terminal, and determining a frequency domain resource used by the strongest interference neighbor cell;

determining a frequency domain resource, as a target frequency domain resource, of which the overlapping degree with the frequency domain resource used by the strongest interference neighboring cell does not exceed a preset overlapping degree from frequency domain resources pre-allocated to a cell to which the edge user terminal belongs;

and adjusting the frequency domain resources used by the edge user terminal to the target frequency domain resources.

Preferably, the frequency domain resource used by the strongest interference neighboring cell is a frequency domain resource allocation template which is allocated from the frequency domain resources pre-allocated to the strongest interference neighboring cell with reference to a first target frequency domain resource allocation template, and the first target frequency domain resource allocation template is a frequency domain resource allocation template determined according to the physical cell identifier of the strongest interference neighboring cell.

Preferably, the determining, as the target frequency domain resource, a frequency domain resource whose overlap with the frequency domain resource used by the strongest interfering neighboring cell does not exceed a preset overlap, from among the frequency domain resources pre-allocated to the cell to which the edge user terminal belongs, includes:

determining a frequency domain resource allocation template corresponding to the physical cell identifier of the cell to which the edge user terminal belongs, and allocating the frequency domain resource allocation template as a second target frequency domain resource allocation template;

and referring to the second target frequency domain resource allocation template, and determining the frequency domain resource, as the target frequency domain resource, of which the overlapping degree with the frequency domain resource used by the strongest interference neighboring cell does not exceed a preset overlapping degree from the frequency domain resources pre-allocated to the cell to which the edge user terminal belongs.

Preferably, the first target frequency domain resource allocation template includes:

a first frequency domain resource initial allocation position and a first frequency domain resource allocation direction;

the second target frequency domain resource allocation module comprises:

a second frequency domain resource initial allocation position and a second frequency domain resource allocation direction.

Preferably, under the condition that the frequency domain resource pre-allocated to the strongest interference neighboring cell is the same as the frequency domain resource pre-allocated to the cell to which the edge user terminal belongs, if a modulo three result of the physical cell identifier of the strongest interference neighboring cell is equal to 0 or a modulo three result of the physical cell identifier of the cell to which the edge user terminal belongs is equal to 0, both the first frequency domain resource allocation starting position and the second frequency domain resource starting position are minimum values in a first frequency domain resource, both the first frequency domain resource allocation direction and the second frequency domain resource allocation direction are directions from the first frequency domain resource starting position or the second frequency domain resource starting position to a maximum value in the first frequency domain resource, and the first frequency resource represents the frequency domain resource pre-allocated to the strongest interference neighboring cell or the frequency domain resource pre-allocated to the cell to which the edge user terminal belongs.

Preferably, under the condition that the frequency domain resource pre-allocated to the strongest interference neighboring cell is the same as the frequency domain resource pre-allocated to the cell to which the edge user terminal belongs, if a modulo three result of the physical cell identifier of the strongest interference neighboring cell is equal to 1 or a modulo three result of the physical cell identifier of the cell to which the edge user terminal belongs is equal to 1, the first frequency domain resource allocation starting position and the second frequency domain resource allocation starting position are both values obtained by dividing a maximum value in the first frequency domain resource by N, and the first frequency domain resource allocation direction and the second frequency domain resource allocation direction both include: a first assignment sub-direction and a second assignment sub-direction;

the first allocation sub-direction is a direction from the first frequency domain resource allocation starting position or from the second frequency domain resource allocation starting position to a maximum value in the first frequency domain resources, the second allocation sub-direction is a direction from the first frequency domain resource allocation starting position or from the second frequency domain resource allocation starting position to a minimum value in the first frequency domain resources, an order of use of the first allocation sub-direction is prior to an order of use of the second allocation sub-direction, and the second allocation sub-direction starts to be used after the first frequency domain resource allocation starting position or the frequency domain resources corresponding to the maximum value in the first frequency domain resources from the second frequency domain resource allocation starting position are all allocated by using the first allocation sub-direction.

Preferably, under the condition that the frequency domain resource pre-allocated to the strongest interference neighboring cell is the same as the frequency domain resource pre-allocated to the cell to which the edge user terminal belongs, if a modulo three result of the physical cell identifier of the strongest interference neighboring cell is equal to 2 or a modulo three result of the physical cell identifier of the cell to which the edge user terminal belongs is equal to 2, both the first frequency domain resource allocation starting position and the second frequency domain resource starting position are maximum values in the first frequency domain resource, and both the first frequency domain resource allocation direction and the second frequency domain resource allocation direction are directions from the first frequency domain resource starting position or from the second frequency domain resource starting position to a minimum value in the first frequency domain resource.

Preferably, under the condition that the frequency domain resource pre-allocated to the strongest interference neighboring cell is the same as the frequency domain resource pre-allocated to the cell to which the edge user terminal belongs, if a modulo three result of the physical cell identifier of the strongest interference neighboring cell is equal to 0 or a modulo three result of the physical cell identifier of the cell to which the edge user terminal belongs is equal to 0, both the first frequency domain resource allocation starting position and the second frequency domain resource starting position are maximum values in a first frequency domain resource, both the first frequency domain resource allocation direction and the second frequency domain resource allocation direction are directions from the first frequency domain resource starting position or from the second frequency domain resource starting position to a minimum value in the first frequency domain resource, and the first frequency resource represents the frequency domain resource pre-allocated to the strongest interference neighboring cell or the frequency domain resource pre-allocated to the cell to which the edge user terminal belongs.

Preferably, under the condition that the frequency domain resource pre-allocated to the strongest interference neighboring cell is the same as the frequency domain resource pre-allocated to the cell to which the edge user terminal belongs, if a modulo three result of the physical cell identifier of the strongest interference neighboring cell is equal to 1 or a modulo three result of the physical cell identifier of the cell to which the edge user terminal belongs is equal to 1, the first frequency domain resource allocation starting position and the second frequency domain resource allocation starting position are both values obtained by dividing a maximum value in the first frequency domain resource by N, and the first frequency domain resource allocation direction and the second frequency domain resource allocation direction both include: a third minor orientation and a third minor orientation;

the third assignment direction is a direction from the first frequency domain resource allocation starting position or from the second frequency domain resource allocation starting position to a minimum value in the first frequency domain resources, the fourth assignment direction is a direction from the first frequency domain resource allocation starting position or from the second frequency domain resource allocation starting position to a maximum value in the first frequency domain resources, a use order of the third assignment direction is prior to a use order of the fourth assignment direction, and the fourth assignment direction starts to be used after the first frequency domain resource allocation starting position or from the second frequency domain resource allocation starting position to a frequency domain resource corresponding to the minimum value in the first frequency domain resources is completely allocated by using the first assignment direction.

Preferably, under the condition that the frequency domain resource pre-allocated to the strongest interference neighboring cell is the same as the frequency domain resource pre-allocated to the cell to which the edge user terminal belongs, if a modulo three result of a physical cell identifier of the strongest interference neighboring cell is equal to 2 or a modulo three result of a physical cell identifier of the cell to which the edge user terminal belongs is equal to 2, both the first frequency domain resource allocation starting position and the second frequency domain resource starting position are minimum values in the first frequency domain resource, and both the first frequency domain resource allocation direction and the second frequency domain resource allocation direction are directions from the first frequency domain resource starting position or from the second frequency domain resource starting position to a maximum value in the first frequency domain resource.

Preferably, the method further comprises:

and adjusting the scheduling scheme of the edge user terminal according to the target frequency domain resource and the frequency domain resource used by the strongest interference adjacent cell so as to improve the frequency spectrum efficiency of the edge user terminal and the cell to which the edge user terminal belongs.

An inter-cell interference coordination apparatus, comprising:

a first determining module, configured to determine a strongest interference neighboring cell of an edge user terminal, and determine a frequency domain resource used by the strongest interference neighboring cell;

a second determining module, configured to determine, from frequency domain resources pre-allocated to a cell to which the edge user terminal belongs, a frequency domain resource for which an overlap degree with a frequency domain resource used by the strongest interference neighboring cell does not exceed a preset overlap degree, and use the frequency domain resource as a target frequency domain resource;

a first adjusting module, configured to adjust the frequency domain resource used by the edge ue to the target frequency domain resource.

Preferably, the apparatus further comprises:

and the second adjusting module is used for adjusting the scheduling scheme of the edge user terminal according to the target frequency domain resource and the frequency domain resource used by the strongest interference neighbor cell so as to improve the frequency spectrum efficiency of the edge user terminal and the cell to which the edge user terminal belongs.

A server, comprising: a processor, a memory, and a data bus through which the processor and the memory communicate;

the memory is used for storing programs;

the processor is used for executing the program;

the program is specifically for:

determining frequency domain resources, the overlapping degree of which with the frequency domain resources used by the strongest interference neighboring cell does not exceed a preset overlapping degree, from the frequency domain resources pre-allocated to the cell to which the edge user terminal belongs, as target frequency domain resources;

Compared with the prior art, the beneficial effects of this application do:

in the application, after determining a strongest interference neighboring cell (which may be understood as a neighboring cell that interferes with an edge user terminal most) of an edge user terminal and determining a frequency domain resource of the strongest interference neighboring cell, determining a frequency domain resource, as a target frequency domain resource, whose overlapping degree with a frequency domain resource used by the strongest interference neighboring cell does not exceed a preset overlapping degree from frequency domain resources pre-allocated to a cell to which the edge user terminal belongs, and ensuring that the overlapping degree of the target frequency domain resource with the frequency domain resource used by the strongest interference neighboring cell is low.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive labor.

Fig. 1 is a flowchart of an inter-cell interference coordination method provided in the present application;

fig. 2 is a schematic diagram of a frequency domain resource allocation starting position and an allocation direction provided in the present application;

fig. 3 is a schematic diagram of another frequency-domain resource allocation starting position and allocation direction provided in the present application;

fig. 4 is a schematic diagram of a frequency domain resource allocation provided in the present application;

fig. 5 is a flowchart of another inter-cell interference coordination method provided in the present application;

fig. 6 is a schematic logic structure diagram of an inter-cell interference coordination apparatus provided in the present application;

fig. 7 is a schematic structural diagram of a server provided in the present application.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, 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 application.

The embodiment of the application discloses a method for coordinating interference among cells, which comprises the following steps: determining a strongest interference neighbor cell of an edge user terminal, and determining a frequency domain resource of the strongest interference neighbor cell; and determining the frequency domain resource of which the overlapping degree with the frequency domain resource of the neighboring cell with the strongest interference does not exceed a first preset overlapping degree according to the physical cell identifier of the cell to which the edge user terminal belongs, and taking the frequency domain resource of the edge user terminal as the frequency domain resource. In the method and the device, the interference of the strongest interference neighbor cell to the edge user terminal is reduced, and the interference coordination effect is obviously improved.

Next, a method for coordinating inter-cell interference disclosed in the embodiment of the present application is introduced, please refer to fig. 1, which may include:

step S11, determining the strongest interference neighbor cell of the edge user terminal, and determining the frequency domain resource used by the strongest interference neighbor cell.

The strongest interference neighbor cell can be understood as: and (4) the adjacent cell with the largest interference to the edge user terminal.

In this embodiment, the process of determining the strongest interference neighboring cell of the edge user terminal may include:

acquiring information of each neighboring cell of a cell to which the edge user terminal belongs from a measurement result reported by the edge user terminal;

and determining the neighbor cell with the maximum interference to the edge user terminal as the strongest interference neighbor cell according to the information of each neighbor cell of the cell to which the edge user terminal belongs.

It should be noted that, information of each neighboring cell of the cell to which the edge user terminal belongs is obtained from the measurement result reported by the edge user terminal, and then the neighboring cell with the largest interference to the edge user terminal is determined according to the information of each neighboring cell of the cell to which the edge user terminal belongs, and the neighboring cell with the largest interference is used as the strongest interference neighboring cell.

After the strongest interference neighboring cell of the edge user terminal is determined, the frequency domain resource used by the strongest interference neighboring cell can be determined from the information reported by the strongest interference neighboring cell.

And S12, determining the frequency domain resources with the overlapping degree of the frequency domain resources used by the strongest interference neighbor cells not exceeding the preset overlapping degree from the frequency domain resources pre-distributed to the cell to which the edge user terminal belongs, and taking the frequency domain resources as target frequency domain resources.

The frequency domain resources pre-allocated to the cell to which the edge ue belongs may be understood as: and the cell to which the edge user terminal belongs can allocate frequency domain resources. The frequency domain resources available for the cell to which the edge user terminal belongs may be pre-allocated by an operator.

And the target frequency domain resource is not more than the frequency domain resource pre-allocated to the cell of the edge user terminal.

The preset overlapping degree can be flexibly set according to the scheduling requirement.

It should be noted that, the smaller the preset overlapping degree is, the lower the overlapping degree of the target frequency domain resource and the frequency domain resource used by the strongest interfering neighboring cell is, and the smaller the interference of the strongest interfering neighboring cell to the edge user terminal is.

And S13, adjusting the frequency domain resource used by the edge user terminal to the target frequency domain resource.

And adjusting the frequency domain resources used by the edge user terminal to the target frequency domain resources, so as to avoid the same frequency domain resources used by the edge user terminal and the strongest interference neighbor cell as much as possible.

In the application, after determining a strongest interference neighboring cell (which can be understood as a neighboring cell with the largest interference to an edge user terminal) of an edge user terminal and determining a frequency domain resource of the strongest interference neighboring cell, determining a frequency domain resource, as a target frequency domain resource, of which the overlapping degree with the frequency domain resource used by the strongest interference neighboring cell does not exceed a preset overlapping degree from frequency domain resources pre-allocated to a cell to which the edge user terminal belongs, and ensuring that the overlapping degree of the target frequency domain resource and the frequency domain resource used by the strongest interference neighboring cell is low.

Further, on the basis of reducing the interference of the strongest interference adjacent cell to the edge user terminal, the edge user terminal and other adjacent cells with weak interference can be allowed to use the same frequency domain resource, so that the cell to which the edge user terminal belongs does not need to set forbidden bandwidth, and the frequency spectrum efficiency of the whole cell can not be reduced.

In another embodiment of the present application, the frequency domain resource used by the strongest interference neighboring cell is introduced, which may specifically be:

and referring to a first target frequency domain resource allocation template, and allocating the frequency domain resources from the frequency domain resources pre-allocated to the strongest interference neighbor cell.

The first target frequency domain resource allocation template is a frequency domain resource allocation template determined according to the physical cell identifier of the strongest interference neighbor cell.

The frequency domain resource pre-allocated to the strongest interference neighboring cell may be understood as: the frequency domain resource which can be allocated by the strongest interference neighbor cell. The available frequency domain resources of the strongest interference neighbor cell may be pre-allocated by the operator.

And the frequency domain resource used by the strongest interference neighbor cell is not more than the frequency domain resource pre-allocated to the strongest interference neighbor cell.

In this embodiment, different frequency domain resource allocation templates may be set for different types of cells, so as to ensure that the different types of cells refer to the different frequency domain resource allocation templates, determine the frequency domain resources used by the cells from the frequency domain resources pre-allocated to the cells, further reduce the probability that the different cells use the same frequency domain resources, and reduce interference between the different cells.

In this embodiment, different types of cells may be distinguished by physical cell identities. Accordingly, a frequency domain resource allocation template for a cell may be determined from a physical cell identity.

The frequency domain resource allocation template may indicate how to allocate frequency domain resources as frequency domain resources used by the cell from among frequency domain resources pre-allocated to the cell.

Based on the frequency domain resources used by the strongest interfering neighbor cell introduced in the foregoing embodiment, in another embodiment of the present application, a frequency domain resource whose overlap with the frequency domain resource used by the strongest interfering neighbor cell does not exceed a preset overlap is determined from the frequency domain resources pre-allocated from the cell to which the edge user terminal belongs, and introduced as a target frequency domain resource, which may specifically include:

and A11, determining a frequency domain resource allocation template corresponding to the physical cell identifier of the cell to which the edge user terminal belongs, and allocating the frequency domain resource allocation template to a second target frequency domain resource allocation template.

As described in the foregoing embodiment, the frequency domain resource allocation templates corresponding to different types of cells are different, and therefore in this step, it is necessary to determine the frequency domain resource allocation template corresponding to the physical cell identifier of the cell to which the edge ue belongs, and allocate the frequency domain resource allocation template to the second target frequency domain resource allocation template.

And A12, referring to the second target frequency domain resource allocation template, and determining the frequency domain resource, as the target frequency domain resource, of which the overlapping degree with the frequency domain resource used by the strongest interference neighboring cell does not exceed a preset overlapping degree from the frequency domain resources pre-allocated to the cell to which the edge user terminal belongs.

And referring to the second target frequency domain resource allocation template, determining the frequency domain resource with the overlapping degree of the frequency domain resource used by the strongest interference neighboring cell not exceeding the preset overlapping degree from the frequency domain resources pre-allocated to the cell to which the edge user terminal belongs, and taking the frequency domain resource as the target frequency domain resource, so that the efficiency of determining the target frequency domain resource can be improved, and the efficiency of inter-cell interference coordination is improved.

In another embodiment of the present application, the first target frequency domain resource allocation template and the second target frequency domain resource allocation template are introduced as follows:

the first target frequency domain resource allocation template may comprise:

a first frequency domain resource initial allocation position and a first frequency domain resource allocation direction.

Referring to the first target frequency domain resource allocation template, allocating the frequency domain resources used by the cell from the frequency domain resources pre-allocated to the strongest interfering neighbor cell may be understood as follows: and starting from a first frequency domain resource initial allocation position in the frequency domain resources pre-allocated to the strongest interference neighbor cell, and allocating the frequency domain resources used by the cell according to the first frequency domain resource allocation direction.

The second target frequency domain resource allocation module may include:

Referring to the second target frequency domain resource allocation template, allocating the frequency domain resource used by the cell from the frequency domain resources pre-allocated to the cell to which the edge user terminal belongs, which can be understood as: and distributing the frequency domain resources used by the cell according to the second frequency domain resource distribution direction from the second frequency domain resource initial distribution position in the frequency domain resources pre-distributed by the cell to which the edge user terminal belongs.

It should be noted that, since interference is likely to occur between cells with the same pre-allocated frequency domain resources, in order to reduce interference between cells with the same pre-allocated frequency domain resources, it is common to adjust the frequency domain resources used by each cell according to the result of modulo three of the physical cell identifier. Therefore, different frequency domain resource allocation templates can be specifically set for cells with different results of the physical cell identity modulo three. And the physical cell identification module identifies the cells with different results, and the frequency domain resources used by the cells can be determined from the frequency domain resources pre-allocated to the cells by referring to respective frequency domain resource allocation templates. Based on this, in another embodiment of the present application, under a condition that the frequency domain resource pre-allocated to the strongest interfering neighboring cell is the same as the frequency domain resource pre-allocated to the cell to which the edge ue belongs, introducing the first frequency domain resource initial allocation position and the first frequency domain resource allocation direction, and the second frequency domain resource initial allocation position and the second frequency domain resource allocation direction, specifically may include:

if the result of modulo three of the physical cell identifier of the strongest interference neighboring cell is equal to 0 or the result of modulo three of the physical cell identifier of the cell to which the edge user terminal belongs is equal to 0, both the first frequency domain resource allocation starting position and the second frequency domain resource starting position are the minimum values in the first frequency domain resources, both the first frequency domain resource allocation direction and the second frequency domain resource allocation direction are the directions from the first frequency domain resource starting position or from the second frequency domain resource starting position to the maximum value in the first frequency domain resources, and the first frequency domain resource represents the frequency domain resources pre-allocated to the strongest interference neighboring cell or the frequency domain resources pre-allocated to the cell to which the edge user terminal belongs. The first frequency domain resource allocation starting position and the second frequency domain resource starting position are # Min RB in fig. 2 (a), and the first frequency domain resource allocation direction and the second frequency domain resource allocation direction are the allocation directions in fig. 2 (a), where # Min RB represents the minimum value in the first frequency domain resource and # Max RB represents the maximum value in the first frequency domain resource.

If the result modulo three of the physical cell identifier of the neighboring cell with the strongest interference is equal to 1 or the result modulo three of the physical cell identifier of the cell to which the edge user terminal belongs is equal to 1, the first frequency domain resource allocation starting position and the second frequency domain resource allocation starting position are both values obtained by dividing the maximum value in the first frequency domain resource by N, and the first frequency domain resource allocation direction and the second frequency domain resource allocation direction both include: a first allocation sub-direction and a second allocation sub-direction.

Preferably, the size of N may be dynamically adjusted according to the load condition of the cell and the load of the cell.

The first allocation sub-direction is a direction from the first frequency domain resource allocation starting position or from the second frequency domain resource allocation starting position to a maximum value in the first frequency domain resources, the second allocation sub-direction is a direction from the first frequency domain resource allocation starting position or from the second frequency domain resource allocation starting position to a minimum value in the first frequency domain resources, an order of use of the first allocation sub-direction is prior to an order of use of the second allocation sub-direction, and the second allocation sub-direction starts to be used after the first frequency domain resource allocation starting position or the frequency domain resources corresponding to the maximum value in the first frequency domain resources from the second frequency domain resource allocation starting position are all allocated by using the first allocation sub-direction. The first frequency domain resource allocation starting position and the second frequency domain resource starting position are shown as (# Max RB)/N in fig. 2 (b), the first allocation direction is a direction from (# Max RB)/N to # Max RB, the second allocation direction is a direction from (# Max RB)/N to # Min RB, the first allocation direction is used first, and the second allocation direction is used after all the frequency domain resources from (# RB)/N to # Max RB are allocated.

If the result of modulo three of the physical cell identifier of the strongest interference neighboring cell is equal to 2 or the result of modulo three of the physical cell identifier of the cell to which the edge user terminal belongs is equal to 2, both the first frequency domain resource allocation starting position and the second frequency domain resource starting position are maximum values in first frequency domain resources, and both the first frequency domain resource allocation direction and the second frequency domain resource allocation direction are directions from the first frequency domain resource starting position or from the second frequency domain resource starting position to the minimum value in the first frequency domain resources. The first frequency domain resource allocation starting position and the second frequency domain resource starting position are # Max RB in fig. 2 (c), and the first frequency domain resource allocation direction and the second frequency domain resource allocation direction are allocation directions in fig. 2 (c).

It should be noted that PCI mod 3 in fig. 2 represents a modulo three operation of the physical cell identifier.

In another embodiment of the present application, under the condition that the frequency domain resource pre-allocated to the strongest interfering neighboring cell is the same as the frequency domain resource pre-allocated to the cell to which the edge ue belongs, introducing another first frequency domain resource initial allocation position and first frequency domain resource allocation direction, and a second frequency domain resource initial allocation position and second frequency domain resource allocation direction, which may specifically include:

if the result of the physical cell identity modulo three of the strongest interference neighboring cell is equal to 0 or the result of the physical cell identity modulo three of the cell to which the edge user terminal belongs is equal to 0, the first frequency domain resource allocation starting position and the second frequency domain resource starting position are both maximum values in first frequency domain resources, the first frequency domain resource allocation direction and the second frequency domain resource allocation direction are both directions from the first frequency domain resource starting position or from the second frequency domain resource starting position to the minimum value in the first frequency domain resources, and the first frequency domain resource represents the frequency domain resource pre-allocated to the strongest interference neighboring cell or the frequency domain resource pre-allocated to the cell to which the edge user terminal belongs. The first frequency domain resource allocation starting position and the second frequency domain resource starting position are # Max RB in fig. 3 (a), and the first frequency domain resource allocation direction and the second frequency domain resource allocation direction are the allocation directions in fig. 3 (a), where # Min RB denotes a minimum value in the first frequency domain resource and # Max RB denotes a maximum value in the first frequency domain resource.

If the result of modulo three of the physical cell identifier of the strongest interference neighboring cell is equal to 1 or the result of modulo three of the physical cell identifier of the cell to which the edge user terminal belongs is equal to 1, the first frequency domain resource allocation starting position and the second frequency domain resource allocation starting position are both values obtained by dividing the maximum value in the first frequency domain resource by N, and the first frequency domain resource allocation direction and the second frequency domain resource allocation direction both include: a third minor orientation and a third minor orientation.

The third assignment direction is a direction from the first frequency domain resource allocation starting position or from the second frequency domain resource allocation starting position to a minimum value in the first frequency domain resources, the fourth assignment direction is a direction from the first frequency domain resource allocation starting position or from the second frequency domain resource allocation starting position to a maximum value in the first frequency domain resources, a use order of the third assignment direction is prior to a use order of the fourth assignment direction, and the fourth assignment direction starts to be used after the first frequency domain resource allocation starting position or from the second frequency domain resource allocation starting position to a frequency domain resource corresponding to the minimum value in the first frequency domain resources is completely allocated by using the first assignment direction. The first frequency domain resource allocation starting position and the second frequency domain resource starting position are shown as (# Max RB)/N in fig. 3 (b), the first allocation direction is a direction from (# Max RB)/N to # Min RB, the second allocation direction is a direction from (# Max RB)/N to # Max RB, the first allocation direction is used first, and the second allocation direction is used after all the frequency domain resources from (# RB)/N to # Min RB are allocated.

If the result of modulo three of the physical cell identifier of the strongest interference neighboring cell is equal to 2 or the result of modulo three of the physical cell identifier of the cell to which the edge user terminal belongs is equal to 2, both the first frequency domain resource allocation starting position and the second frequency domain resource starting position are the minimum values in the first frequency domain resources, and both the first frequency domain resource allocation direction and the second frequency domain resource allocation direction are the directions from the first frequency domain resource starting position or from the second frequency domain resource starting position to the maximum value in the first frequency domain resources. The first frequency domain resource allocation starting position and the second frequency domain resource starting position are # Min RB in fig. 3 (c), and the first frequency domain resource allocation direction and the second frequency domain resource allocation direction are allocation directions in fig. 3 (c).

It should be noted that PCI mod 3 in fig. 3 represents a modulo three operation of the physical cell identity.

Of course, the specific embodiments of the first frequency domain resource initial allocation position and the first frequency domain resource allocation direction, and the second frequency domain resource initial allocation position and the second frequency domain resource allocation direction are not limited to the specific embodiments shown in fig. 2 and fig. 3, and any specific embodiment that can achieve the purpose of reducing the overlapping degree of the frequency domain resources of various cells may be used as the embodiments of the present application, and are not listed here.

Based on the first frequency domain resource initial allocation position and the first frequency domain resource allocation direction shown in fig. 2, and the second frequency domain resource initial allocation position and the second frequency domain resource allocation direction, please refer to fig. 4, for the frequency domain resource that is pre-allocated to the cell to which the edge user terminal belongs with reference to the second target frequency domain resource allocation template, and is determined to be the frequency domain resource whose overlap degree with the frequency domain resource used by the strongest interference neighboring cell does not exceed the preset overlap degree, and the frequency domain resource is introduced as the target frequency domain resource, which may specifically include:

if the result of the third physical cell identifier of the cell to which the edge user terminal belongs is equal to 0, if the result of the third physical cell identifier of the strongest interference neighbor cell of the edge user terminal is equal to 1, allocating frequency domain resources to the edge user terminal from a first RB number value, and if the result of the third physical cell identifier of the strongest interference neighbor cell of the edge user terminal is equal to 2, allocating frequency domain resources to the edge user terminal from a second RB number value, allocating frequency domain resources to a center user terminal of the cell to which the edge user terminal belongs from a third RB number value, and if the result of the third physical cell identifier of the strongest interference neighbor cell of the edge user terminal is equal to 0, allocating frequency domain resources to the edge user terminal from a fourth RB number value;

wherein the second RB number value is greater than the first RB number value, the third RB number value is greater than the second RB number value, and the fourth RB number value is greater than the third RB number value, as shown in (a) of FIG. 4;

if the result of the third physical cell identity of the cell to which the edge user terminal belongs is equal to 1, if the result of the third physical cell identity of the strongest interference neighbor cell of the edge user terminal is equal to 2, allocating frequency domain resources for the edge user terminal from a fifth RB number value, allocating frequency domain resources for a center user terminal of the cell to which the edge user terminal belongs from a sixth RB number value, if the result of the third physical cell identity of the strongest interference neighbor cell of the edge user terminal is equal to 1, allocating frequency domain resources for the edge user terminal from a seventh RB number value, and if the result of the third physical cell identity of the strongest interference neighbor cell of the edge user terminal is equal to 0, allocating frequency domain resources for the edge user terminal from an eighth RB number value;

wherein the sixth RB number value is greater than the fifth RB number value, the seventh RB number value is greater than the sixth RB number value, and the eighth RB number value is greater than the seventh RB number value, as shown in (b) of FIG. 4;

if the result of the third physical cell identifier of the cell to which the edge user terminal belongs is equal to 2, if the result of the third physical cell identifier of the strongest interference neighbor cell of the edge user terminal is equal to 1, allocating frequency domain resources to the edge user terminal from a ninth RB number value, and if the result of the third physical cell identifier of the strongest interference neighbor cell of the edge user terminal is equal to 0, allocating frequency domain resources to the edge user terminal from a tenth RB number value, and allocating frequency domain resources to a center user terminal of the cell to which the edge user terminal belongs from an eleventh RB number value, and if the result of the third physical cell identifier of the strongest interference neighbor cell of the edge user terminal is equal to 2, allocating frequency domain resources to the edge user terminal from a twelfth RB number value;

wherein the tenth RB number value is greater than the ninth RB number value, the eleventh RB number value is greater than the tenth RB number value, and the twelfth RB number value is greater than the eleventh RB number value, as shown in (c) of FIG. 4.

# Min RB in (a) - (c) in fig. 4 represents an RB number minimum value; # Max RB denotes the RB number maximum; PCI represents a physical cell identity; PCI mod 3 represents the PCI modulo three operation; when the result of the PCI modulo three of the strongest interference neighbor cell is equal to 1, the area indicates that the physical cell identifier modulo three of the strongest interference neighbor cell of the edge user terminal is equal to 1, and the frequency domain resource is allocated to the edge user terminal; when the result of the PCI modulo three of the strongest interference neighbor cell is equal to 2, which indicates that the result of the physical cell identifier modulo three of the strongest interference neighbor cell of the edge user terminal is equal to 2, the frequency domain resource allocated to the edge user terminal is obtained; the region represented by the central user represents the frequency domain resources allocated to the central user; and when the result of the PCI modulo three of the strongest interference neighbor cell is equal to the result of 0, which indicates that the result of the physical cell identifier modulo three of the strongest interference neighbor cell of the edge user terminal is equal to 0, distributing the frequency domain resources to the edge user terminal.

Of course, referring to the second target frequency domain resource allocation template, and determining, from the frequency domain resources pre-allocated to the cell to which the edge user terminal belongs, a frequency domain resource whose overlapping degree with the frequency domain resource used by the strongest interference neighboring cell does not exceed a preset overlapping degree, an embodiment of the target frequency domain resource is not limited to the embodiment shown in fig. 4, and other embodiments are not listed here.

In another embodiment of the present application, another inter-cell interference coordination method is provided, please refer to fig. 5, which may include:

step S51, determining the strongest interference neighbor cell of the edge user terminal, and determining the frequency domain resource used by the strongest interference neighbor cell.

And step S52, determining the frequency domain resource with the overlapping degree of the frequency domain resource used by the strongest interference neighboring cell not exceeding the preset overlapping degree from the frequency domain resources pre-allocated to the cell to which the edge user terminal belongs, and taking the frequency domain resource as the target frequency domain resource.

And S53, adjusting the frequency domain resource used by the edge user terminal to the target frequency domain resource.

Steps S51 to S53 are the same as steps S11 to S13 in the foregoing embodiment, and the detailed processes of steps S51 to S53 can be referred to the related descriptions of steps S11 to S13, and are not described herein again.

And step S54, adjusting the scheduling scheme of the edge user terminal according to the target frequency domain resource and the frequency domain resource used by the strongest interference adjacent cell so as to improve the frequency spectrum efficiency of the edge user terminal and the cell to which the edge user terminal belongs.

Adjusting the scheduling scheme of the edge ue according to the target frequency domain resource and the frequency domain resource used by the strongest interfering neighbor cell may include:

and according to the target frequency domain resource and the frequency domain resource used by the strongest interference neighboring cell, improving the Modulation and Coding Scheme (MCS) of the edge user terminal or changing to a double-flow transmission mode.

Next, an inter-cell interference coordination apparatus provided in the present application is introduced, and the inter-cell interference coordination apparatus described below and the inter-cell interference coordination method described above may be referred to correspondingly.

Referring to fig. 6, a schematic diagram of a logical structure of an inter-cell interference coordination apparatus provided in the present application is shown, where the inter-cell interference coordination apparatus includes: a first determining module 11, a second determining module 12 and a first adjusting module 13.

a second determining module, configured to determine, from frequency domain resources pre-allocated to a cell to which the edge user terminal belongs, a frequency domain resource whose overlap with a frequency domain resource used by the strongest interfering neighboring cell does not exceed a preset overlap, as a target frequency domain resource;

and the adjusting module is used for adjusting the frequency domain resources used by the edge user terminal into the target frequency domain resources.

In this embodiment, the frequency domain resource used by the strongest interference neighboring cell is a frequency domain resource allocation template that is allocated from frequency domain resources pre-allocated to the strongest interference neighboring cell with reference to a first target frequency domain resource allocation template, and the first target frequency domain resource allocation template is a frequency domain resource allocation template determined according to a physical cell identifier of the strongest interference neighboring cell.

In this embodiment, the second determining module may specifically include:

a first determining submodule, configured to determine a frequency domain resource allocation template corresponding to a physical cell identifier of a cell to which the edge user terminal belongs, and allocate the frequency domain resource allocation template to a second target frequency domain resource allocation template;

and the second determining submodule is used for determining the frequency domain resource with the overlapping degree of the frequency domain resource used by the strongest interference adjacent cell not exceeding the preset overlapping degree from the frequency domain resources pre-allocated to the cell to which the edge user terminal belongs by referring to the second target frequency domain resource allocation template as the target frequency domain resource.

In this embodiment, the first target frequency domain resource allocation template may include:

the second target frequency domain resource allocation module may include:

For the inter-cell interference coordination apparatus, under the condition that the frequency domain resource pre-allocated to the strongest interference neighboring cell is the same as the frequency domain resource pre-allocated to the cell to which the edge user terminal belongs, if a modulo three result of a physical cell identifier of the strongest interference neighboring cell is equal to 0 or a modulo three result of a physical cell identifier of the cell to which the edge user terminal belongs is equal to 0, both the first frequency domain resource allocation starting position and the second frequency domain resource starting position are minimum values in first frequency domain resources, both the first frequency domain resource allocation direction and the second frequency domain resource allocation direction are directions from the first frequency domain resource starting position or from the second frequency domain resource starting position to a maximum value in the first frequency domain resources, and the first frequency domain resource represents the frequency domain resource pre-allocated to the strongest interference neighboring cell or the frequency domain resource pre-allocated to the cell to which the edge user terminal belongs.

For the above apparatus for coordinating inter-cell interference, under the condition that the frequency domain resource pre-allocated to the strongest interfering neighbor cell is the same as the frequency domain resource pre-allocated to the cell to which the edge ue belongs, if the modulo three result of the physical cell identifier of the strongest interfering neighbor cell is equal to 1 or the modulo three result of the physical cell identifier of the cell to which the edge ue belongs is equal to 1, then the first frequency domain resource allocation starting position and the second frequency domain resource allocation starting position are both values obtained by dividing the maximum value in the first frequency domain resource by N, and the first frequency domain resource allocation direction and the second frequency domain resource allocation direction both include: a first assignment sub-direction and a second assignment sub-direction;

the first allocation sub-direction is a direction from the first frequency domain resource allocation starting position or from the second frequency domain resource allocation starting position to a maximum value in the first frequency domain resource, the second allocation sub-direction is a direction from the first frequency domain resource allocation starting position or from the second frequency domain resource allocation starting position to a minimum value in the first frequency domain resource, a use order of the first allocation sub-direction is prior to a use order of the second allocation sub-direction, and the second allocation sub-direction starts to be used after all frequency domain resources corresponding to the first frequency domain resource allocation starting position or from the second frequency domain resource allocation starting position to the maximum value in the first frequency domain resource are allocated by using the first allocation sub-direction.

For the above inter-cell interference coordination apparatus, under the condition that the frequency domain resource pre-allocated to the strongest interference neighboring cell is the same as the frequency domain resource pre-allocated to the cell to which the edge user terminal belongs, if a modulo three result of the physical cell identifier of the strongest interference neighboring cell is equal to 2 or a modulo three result of the physical cell identifier of the cell to which the edge user terminal belongs is equal to 2, the first frequency domain resource allocation starting position and the second frequency domain resource starting position are both maximum values in the first frequency domain resource, and the first frequency domain resource allocation direction and the second frequency domain resource allocation direction are both directions from the first frequency domain resource starting position or from the second frequency domain resource starting position to a minimum value in the first frequency domain resource.

In this embodiment, for the inter-cell interference coordination apparatus, under the condition that the frequency domain resource pre-allocated to the strongest interference neighboring cell is the same as the frequency domain resource pre-allocated to the cell to which the edge user terminal belongs, if a modulo three result of a physical cell identifier of the strongest interference neighboring cell is equal to 0 or a modulo three result of a physical cell identifier of the cell to which the edge user terminal belongs is equal to 0, both the first frequency domain resource allocation starting position and the second frequency domain resource starting position are maximum values in a first frequency domain resource, both the first frequency domain resource allocation direction and the second frequency domain resource allocation direction are directions from the first frequency domain resource starting position or from the second frequency domain resource starting position to a minimum value in the first frequency domain resource, and the first frequency domain resource represents the frequency domain resource pre-allocated to the strongest interference neighboring cell or the frequency domain resource pre-allocated to the cell to which the edge user terminal belongs.

For the above inter-cell interference coordination apparatus, under the condition that the frequency domain resource pre-allocated to the strongest interference neighboring cell is the same as the frequency domain resource pre-allocated to the cell to which the edge user terminal belongs, if a modulo three result of the physical cell identifier of the strongest interference neighboring cell is equal to 1 or a modulo three result of the physical cell identifier of the cell to which the edge user terminal belongs is equal to 1, then the first frequency domain resource allocation starting position and the second frequency domain resource allocation starting position are both values obtained by dividing a maximum value in the first frequency domain resource by N, and both the first frequency domain resource allocation direction and the second frequency domain resource allocation direction include: a third minor orientation and a third minor orientation;

For the above inter-cell interference coordination apparatus, under the condition that the frequency domain resource pre-allocated to the strongest interference neighboring cell is the same as the frequency domain resource pre-allocated to the cell to which the edge user terminal belongs, if a modulo three result of the physical cell identifier of the strongest interference neighboring cell is equal to 2 or a modulo three result of the physical cell identifier of the cell to which the edge user terminal belongs is equal to 2, the first frequency domain resource allocation starting position and the second frequency domain resource starting position are both minimum values in the first frequency domain resource, and the first frequency domain resource allocation direction and the second frequency domain resource allocation direction are both directions from the first frequency domain resource starting position or from the second frequency domain resource starting position to a maximum value in the first frequency domain resource.

In this embodiment, the inter-cell interference coordination apparatus may further include: and the second adjusting module is used for adjusting the scheduling scheme of the edge user terminal according to the target frequency domain resource and the frequency domain resource used by the strongest interference neighbor cell so as to improve the frequency spectrum efficiency of the edge user terminal and the cell to which the edge user terminal belongs.

In another embodiment of the present application, a server is provided, please refer to fig. 7, which may include: a processor 100, a memory 200, and a data bus 300, said processor 100 and said memory 200 communicating over said data bus 300;

the memory 200 is used for storing programs;

the processor 100 is configured to execute the program;

the program is specifically for:

It should be noted that, in the present specification, the embodiments are all described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments may be referred to each other. For the device-like embodiment, since it is basically similar to the method embodiment, the description is simple, and reference may be made to the partial description of the method embodiment for relevant points.

Finally, it should also be noted that, in this document, relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrases "comprising one of 8230; \8230;" 8230; "does not exclude the presence of additional like elements in a process, method, article, or apparatus that comprises the element.

For convenience of description, the above devices are described as being divided into various units by function, and are described separately. Of course, the functionality of the units may be implemented in one or more software and/or hardware when implementing the present application.

From the above description of the embodiments, it is clear to those skilled in the art that the present application can be implemented by software plus necessary general hardware platform. Based on such understanding, the technical solutions of the present application or portions thereof that contribute to the prior art may be embodied in the form of a software product, which may be stored in a storage medium, such as a ROM/RAM, a magnetic disk, an optical disk, or the like, and includes several instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute the method according to the embodiments or some portions of the embodiments of the present application.

The method, the apparatus, and the server for coordinating inter-cell interference provided by the present application are described in detail above, and specific examples are applied in the present disclosure to explain the principles and embodiments of the present application, and the description of the above embodiments is only used to help understand the method and the core idea of the present application; meanwhile, for a person skilled in the art, according to the idea of the present application, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present application.

Claims

1. An inter-cell interference coordination method, comprising:

adjusting the frequency domain resources used by the edge user terminal to the target frequency domain resources;

the frequency domain resource used by the strongest interference neighboring cell is a reference first target frequency domain resource allocation template, the frequency domain resource is allocated from the frequency domain resources pre-allocated to the strongest interference neighboring cell, and the first target frequency domain resource allocation template is a frequency domain resource allocation template determined according to the physical cell identifier of the strongest interference neighboring cell.

2. The method according to claim 1, wherein the determining, as a target frequency domain resource, a frequency domain resource whose overlap with the frequency domain resource used by the strongest interfering neighbor cell does not exceed a preset overlap from among the frequency domain resources pre-allocated to the cell to which the edge ue belongs includes:

and referring to the second target frequency domain resource allocation template, determining the frequency domain resource with the overlapping degree of the frequency domain resource used by the strongest interference neighboring cell not exceeding the preset overlapping degree from the frequency domain resources pre-allocated to the cell to which the edge user terminal belongs, and using the frequency domain resource as the target frequency domain resource.

3. The method of claim 2, wherein the first target frequency domain resource allocation template comprises:

the second target frequency domain resource allocation module comprises:

4. The method of claim 3, wherein when the frequency domain resource pre-allocated to the strongest interference neighboring cell is the same as the frequency domain resource pre-allocated to the cell to which the edge ue belongs, if a modulo three result of a physical cell identifier of the strongest interference neighboring cell is equal to 0 or a modulo three result of a physical cell identifier of the cell to which the edge ue belongs is equal to 0, both the first frequency domain resource allocation starting position and the second frequency domain resource starting position are minimum values in a first frequency domain resource, both the first frequency domain resource allocation direction and the second frequency domain resource allocation direction are directions from the first frequency domain resource starting position or from the second frequency domain resource starting position to a maximum value in the first frequency domain resource, and the first frequency domain resource represents the frequency domain resource pre-allocated to the strongest interference neighboring cell or the frequency domain resource pre-allocated to the cell to which the edge ue belongs.

5. The method according to claim 4, wherein when the frequency domain resource pre-allocated to the strongest interfering neighbor cell is the same as the frequency domain resource pre-allocated to the cell to which the edge ue belongs, if a modulo three result of a physical cell identity of the strongest interfering neighbor cell is equal to 1 or a modulo three result of a physical cell identity of the cell to which the edge ue belongs is equal to 1, the first frequency domain resource allocation starting position and the second frequency domain resource allocation starting position are both values obtained by dividing a maximum value in the first frequency domain resource by N, and the first frequency domain resource allocation direction and the second frequency domain resource allocation direction both include: a first assignment sub-direction and a second assignment sub-direction;

6. The method of claim 5, wherein, when the frequency domain resource pre-allocated to the strongest interfering neighbor cell is the same as the frequency domain resource pre-allocated to the cell to which the edge ue belongs, if a modulo three result of a physical cell identity of the strongest interfering neighbor cell is equal to 2 or a modulo three result of a physical cell identity of the cell to which the edge ue belongs is equal to 2, the first frequency domain resource allocation starting position and the second frequency domain resource starting position are both maximum values in a first frequency domain resource, and the first frequency domain resource allocation direction and the second frequency domain resource allocation direction are both directions from the first frequency domain resource starting position or from the second frequency domain resource starting position to a minimum value in the first frequency domain resource.

7. The method according to claim 3, wherein when the frequency domain resources pre-allocated to the strongest interfering neighbor cell and the frequency domain resources pre-allocated to the cell to which the edge ue belongs are the same, if a modulo three result of a physical cell identifier of the strongest interfering neighbor cell is equal to 0 or a modulo three result of a physical cell identifier of the cell to which the edge ue belongs is equal to 0, both the first frequency domain resource allocation starting position and the second frequency domain resource starting position are maximum values in first frequency domain resources, both the first frequency domain resource allocation direction and the second frequency domain resource allocation direction are directions from the first frequency domain resource starting position or from the second frequency domain resource starting position to a minimum value in the first frequency domain resources, and the first frequency domain resource represents the frequency domain resources pre-allocated to the strongest interfering neighbor cell or the frequency domain resources pre-allocated to the cell to which the edge ue belongs.

8. The method of claim 7, wherein if a modulo three result of a physical cell identifier of the strongest interfering neighbor cell is equal to 1 or a modulo three result of a physical cell identifier of a cell to which the edge user terminal belongs is equal to 1, the first frequency domain resource allocation starting position and the second frequency domain resource allocation starting position are both values obtained by dividing a maximum value in the first frequency domain resource by N, and the first frequency domain resource allocation direction and the second frequency domain resource allocation direction both include: a third sub-minor direction and a fourth sub-minor direction;

the third assignment direction is a direction from the first frequency domain resource allocation starting position or from the second frequency domain resource allocation starting position to a minimum value in the first frequency domain resources, the fourth assignment direction is a direction from the first frequency domain resource allocation starting position or from the second frequency domain resource allocation starting position to a maximum value in the first frequency domain resources, a use order of the third assignment direction is prior to a use order of the fourth assignment direction, and the fourth assignment direction starts to be used after the first frequency domain resource allocation starting position or from the second frequency domain resource allocation starting position to a frequency domain resource corresponding to the minimum value in the first frequency domain resources is completely allocated by using the third assignment direction.

9. The method of claim 8, wherein when the frequency domain resources pre-allocated to the strongest interfering neighbor cell and the frequency domain resources pre-allocated to the cell to which the edge ue belongs are the same, if a modulo three result of a physical cell identity of the strongest interfering neighbor cell is equal to 2 or a modulo three result of a physical cell identity of the cell to which the edge ue belongs is equal to 2, the first frequency domain resource allocation starting position and the second frequency domain resource starting position are both minimum values in first frequency domain resources, and the first frequency domain resource allocation direction and the second frequency domain resource allocation direction are both directions from the first frequency domain resource starting position or from the second frequency domain resource starting position to a maximum value in the first frequency domain resources.

10. The method of claim 1, further comprising:

11. An apparatus for coordinating inter-cell interference, comprising:

a first adjusting module, configured to adjust the frequency domain resource used by the edge ue to the target frequency domain resource;

12. The apparatus of claim 11, further comprising:

13. A server, comprising: a processor, a memory, and a data bus through which the processor and the memory communicate;

the memory is used for storing programs;

the processor is used for executing the program;

the program is specifically for:

adjusting the frequency domain resource used by the edge user terminal to the target frequency domain resource;