CN112770339B - Cooperative cell determination method and device - Google Patents

Abstract

The invention provides a method and a device for determining a cooperative cell. The method comprises the following steps: after receiving an A3 measurement event of coordinated multipoint transmission reported by a terminal, acquiring a user MCS level corresponding to the terminal; under the condition that the MCS level of a user is smaller than a level threshold, acquiring a first adjacent cell in a cooperative cell set corresponding to a preset serving cell; the first adjacent cell is a cooperative cell with the maximum reference signal receiving power in the cooperative cell set; acquiring the utilization rate of a first physical resource block and the number of first access users of a first adjacent cell; acquiring a first load rate of a base station to which a first adjacent cell belongs under the condition that the utilization rate of a first physical resource block is greater than a utilization rate threshold and the number of first access users is greater than a user number threshold; and taking the first adjacent cell as a cooperative cell of the service cell under the condition that the first load rate is smaller than a load rate threshold. The invention can improve the overall performance of the uplink JR technology and can better adapt to the network environment problem of the existing network.

Description

Cooperative cell determination method and device

Technical Field

The present invention relates to the field of communications technologies, and in particular, to a method and an apparatus for determining a cooperative cell.

Background

An uplink COMP (Coordinated Multiple Points Reception, Coordinated Multiple point transmission) JR (Joint Reception) technology receives an uplink signal sent by a UE (User Equipment) through a serving cell and a cooperating cell together to implement a receive diversity gain. In the current uplink joint reception Scheme, after a user reports an a3 measurement event related to COMP, a serving cell maintains a coordinated cell set, and further detects a Modulation and Coding Scheme (MCS) level of the user to screen COMP users.

Because the current serving cell only supports one cooperative cell, the serving cell sends uplink scheduling information to a neighboring cell with the maximum Reference Signal Received Power (RSRP) reported by a user, and then diversity gain is obtained by combining PL (programmable Logic) data of the serving cell and the neighboring cell. When the load of the cooperative cell is relatively high, if a Physical Resource Block (PRB) allocable in the cooperative cell is greater than a scheduling request PRB, although the cooperation can be successful, the load state of the cooperative cell is increased, and the overall uplink average rate of the cell level is reduced; if the allocable cooperative PRB in the cooperative cell is smaller than the scheduling request PRB, the cooperation fails, so that the user cannot obtain the marginal rate gain and the cost of invalid information interaction between the cells is caused.

The scheme includes that only one cooperative cell is selected for uplink JR, a COMP user is screened according to MCS levels, then an adjacent cell with the maximum RSRP in reporting COMP A3 measurement is selected as an optimal cooperative cell, for the cooperative cell with a high load, the situation that cooperative PRB resources cannot be timely distributed to cause cooperative failure is easy to occur, invalid information interaction between cells is caused, signaling overhead is wasted, the load of a processor is increased, and for the cooperative cell with the high load, after cooperation succeeds, the uplink rate of an edge user can be increased, but the load state of the cooperative cell is increased, and the uplink average rate of the cooperative cell is reduced.

Disclosure of Invention

The technical problem to be solved by the embodiments of the present invention is to provide a method and an apparatus for determining a cooperative cell, so as to solve the technical problems that in the prior art, a situation that cooperative PRB resources cannot be allocated in time to cause a cooperative failure easily occurs, resulting in invalid information interaction between cells, wasting signaling overhead, increasing a load of a processor, increasing a load state of a cooperative cell, and reducing an uplink average rate of the cooperative cell.

In order to solve the above technical problem, an embodiment of the present invention provides a method for determining a cooperative cell, which is applied to a serving cell, and includes:

after receiving an A3 measurement event of coordinated multipoint transmission reported by a terminal, acquiring a user MCS level corresponding to the terminal;

under the condition that the MCS level of the user is smaller than the level threshold, acquiring a first adjacent cell in a collaborative cell set corresponding to the service cell, wherein the first adjacent cell is configured in advance; the first neighboring cell is a cooperative cell with the maximum reference signal receiving power in the cooperative cell set;

acquiring the utilization rate of a first physical resource block and the number of first access users of the first adjacent cell;

acquiring a first load rate of a base station to which the first adjacent cell belongs under the condition that the utilization rate of the first physical resource block is greater than a utilization rate threshold and the number of the first access users is greater than a user number threshold;

and taking the first adjacent cell as a cooperative cell of the service cell under the condition that the first load rate is smaller than a load rate threshold.

Preferably, after the step of obtaining the MCS level of the user corresponding to the terminal, the method further includes:

and exiting the maintenance process of the cooperative cell set under the condition that the MCS level of the user is greater than or equal to the level threshold.

Preferably, after the step of obtaining the utilization rate of the first physical resource block and the number of the first users accessing to the first neighboring cell, the method further includes:

under the condition that the utilization rate of the first physical resource block is less than or equal to the utilization rate threshold or the number of the first access users is less than or equal to the user number threshold, removing the first adjacent cell from the cooperative cell set;

acquiring the occupancy rates of first physical resource blocks of all terminals accessed to the first adjacent cell;

and blindly switching the terminal with the occupancy rate of the first physical resource block larger than the first occupancy rate threshold value to the pilot frequency adjacent cell with the same coverage and the load lower than the first threshold value.

Preferably, after the step of obtaining the first load factor of the base station to which the first neighboring cell belongs, the method further includes:

under the condition that the first load rate is greater than or equal to a load rate threshold, removing the first adjacent cell from the cooperative cell set;

acquiring the occupancy rate of a second physical resource block of all terminals accessed to the first adjacent cell;

and blindly switching the terminal with the second physical resource block occupancy rate larger than the second occupancy rate threshold value to the pilot frequency adjacent cell with the same coverage load lower than the second threshold value.

Preferably, after the step of removing the first neighboring cell from the cooperative cell set, the method further includes:

acquiring a second neighboring cell in the cooperative cell set; the second neighboring cell is a cooperative cell with the maximum reference signal received power in the cooperative cell set;

acquiring the utilization rate of a second physical resource block of the second adjacent cell and the number of second access users;

acquiring a second load rate of the base station to which the second adjacent cell belongs under the condition that the utilization rate of the second physical resource block is greater than the utilization rate threshold and the number of the second access users is greater than the user number threshold;

and taking the second neighboring cell as a cooperative cell of the serving cell under the condition that the second load rate is smaller than the load rate threshold.

Preferably, the step of obtaining the first load factor of the base station to which the first neighboring cell belongs includes:

acquiring the resource load rate, the central processing unit load rate and the memory load rate of the transmission resource of the base station to which the first adjacent cell belongs;

the step of using the first neighboring cell as the cooperative cell of the serving cell when the first load rate is smaller than a load rate threshold includes:

and under the condition that the resource load rate is smaller than a resource load rate threshold, the central processing unit load rate is smaller than a central processing unit load rate threshold, and the memory load rate is smaller than a memory load rate threshold, taking the first adjacent cell as a cooperative cell of the service cell.

In order to solve the foregoing technical problem, an embodiment of the present invention provides a cooperative cell determining apparatus, which is applied to a serving cell, and includes:

the system comprises an MCS level acquisition module, a measurement processing module and a processing module, wherein the MCS level acquisition module is used for acquiring a user MCS level corresponding to a terminal after receiving an A3 measurement event of coordinated multipoint transmission reported by the terminal;

a first neighboring cell obtaining module, configured to obtain a first neighboring cell in a collaborative cell set corresponding to the preconfigured serving cell, when the MCS level of the user is less than a level threshold; the first adjacent cell is a cooperative cell with the maximum reference signal receiving power in the cooperative cell set;

a first user number obtaining module, configured to obtain a first physical resource block utilization rate and a first access user number of the first neighboring cell;

a first load rate obtaining module, configured to obtain a first load rate of a base station to which a first neighboring cell belongs when a utilization rate of the first physical resource block is greater than a utilization threshold and a number of first access users is greater than a user number threshold;

a cooperative cell obtaining module, configured to use the first neighboring cell as a cooperative cell of the serving cell when the first load rate is smaller than a load rate threshold.

Preferably, the method further comprises the following steps:

and the maintenance flow exit module is used for exiting the maintenance flow of the cooperative cell set under the condition that the MCS level of the user is greater than or equal to the level threshold.

Preferably, the method further comprises the following steps:

a first removing module, configured to remove the first neighboring cell from the cooperative cell set when the first physical resource block utilization rate is less than or equal to the utilization rate threshold, or the first access user number is less than or equal to the user number threshold;

a first occupancy rate acquisition module, configured to acquire first physical resource block occupancy rates of all terminals accessing the first neighboring cell;

and the first cell switching module is used for blindly switching the terminal with the occupancy rate of the first physical resource block larger than the first occupancy rate threshold value to the pilot frequency adjacent cell with the same coverage load lower than the first threshold value.

Preferably, the method further comprises the following steps:

a second eliminating module, configured to eliminate the first neighboring cell from the cooperative cell set when the first load rate is greater than or equal to a load rate threshold;

a second occupancy rate acquisition module, configured to acquire second physical resource block occupancy rates of all terminals accessing the first neighboring cell;

and the second cell switching module is used for blindly switching the terminal with the second physical resource block occupancy rate larger than the second occupancy rate threshold value to the pilot frequency adjacent cell with the same coverage and the load lower than the second threshold value.

Preferably, the method further comprises the following steps:

a second neighboring cell acquiring module, configured to acquire a second neighboring cell in the coordinated cell set; the second neighboring cell is a cooperative cell with the maximum reference signal received power in the cooperative cell set;

a second user number obtaining module, configured to obtain a second physical resource block utilization rate and a second access user number of the second neighboring cell;

a second load rate obtaining module, configured to obtain a second load rate of the base station to which the second neighboring cell belongs when the second physical resource block utilization rate is greater than the utilization rate threshold and the second access user number is greater than the user number threshold;

a cooperative cell determining module, configured to use the second neighboring cell as a cooperative cell of the serving cell when the second load rate is smaller than the load rate threshold.

Preferably, the first load factor obtaining module includes:

a load rate obtaining sub-module, configured to obtain a resource load rate of a transmission resource of a base station to which the first neighboring cell belongs, a central processing unit load rate, and a memory load rate;

the cooperative cell acquisition module comprises:

and under the condition that the resource load rate is smaller than a resource load rate threshold, the central processing unit load rate is smaller than a central processing unit load rate threshold, and the memory load rate is smaller than a memory load rate threshold, taking the first adjacent cell as a cooperative cell of the service cell.

Compared with the prior art, the embodiment of the invention has the following advantages:

in the embodiment of the invention, after an A3 measurement event of coordinated multipoint transmission reported by a terminal is received, a user MCS level corresponding to the terminal is obtained, under the condition that the user MCS level is less than a level threshold, a first adjacent cell in a coordinated cell set corresponding to a preconfigured service cell is obtained, the first adjacent cell is a coordinated cell with the maximum reference signal receiving power in the coordinated cell set, a first physical resource block utilization rate and a first access user number of the first adjacent cell are obtained, under the condition that the first physical resource block utilization rate is greater than a utilization rate threshold and the first access user number is greater than a user number threshold, a first load rate of a base station to which the first adjacent cell belongs is obtained, and under the condition that the first load rate is less than a load rate threshold, the first adjacent cell is taken as a coordinated cell of the service cell. The embodiment of the invention avoids the situation that the high-load cell is taken as the cooperative cell by increasing the judgment of the load state of the cooperative cell, thereby improving the overall performance of the uplink JR technology and better adapting to the network environment problem of the existing network.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the application.

Drawings

Fig. 1 is a flowchart illustrating steps of a method for determining a cooperative cell according to an embodiment of the present invention;

fig. 2 is a flowchart illustrating steps of a method for determining a cooperative cell according to an embodiment of the present invention;

fig. 3 is a schematic structural diagram of a cooperative cell determining apparatus according to an embodiment of the present invention;

fig. 4 is a schematic structural diagram of a cooperative cell determining apparatus according to an embodiment of the present invention.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.

The terminology used in the embodiments of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used in the examples of the present invention and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.

Example one

Referring to fig. 1, a flowchart of steps of a method for determining a cooperative cell according to an embodiment of the present invention is shown, where the method for determining a cooperative cell may be applied to a serving cell, and specifically may include the following steps:

step 101: and after receiving an A3 measurement event of coordinated multipoint transmission reported by a terminal, acquiring a user MCS level corresponding to the terminal.

In the embodiment of the present invention, the serving cell refers to a cell that needs to configure a cooperative cell, that is, after the cooperative cell is configured, the serving cell and the cooperative cell may jointly receive an uplink signal sent by the UE to implement a receive diversity gain.

And a coordinated cell set configured for the service cell is preset at the service cell side, and all adjacent cells corresponding to the service cell are recorded in the coordinated cell set.

An A3 measurement event of coordinated multipoint transmission is an A3 measurement event of COMP, and after a serving cell receives an A3 measurement event of COMP reported by a terminal, a coordinated cell set corresponding to the serving cell may be maintained to select a neighboring cell from the coordinated cell set as a coordinated cell of the serving cell.

The user MCS level refers to a level of a modulation and coding strategy of the terminal, that is, whether the terminal device is an edge device of the serving cell can be determined according to the user MCS level.

The scheme for obtaining the MCS level of the user corresponding to the terminal is a mature technical scheme in the field, and the embodiment of the present invention is not described herein again.

After acquiring the MCS level of the user corresponding to the terminal,step 102 is performed.

Step 102: under the condition that the MCS level of the user is smaller than the level threshold, acquiring a first adjacent cell in a collaborative cell set corresponding to the service cell, wherein the first adjacent cell is configured in advance; the first neighboring cell is a cooperative cell with the maximum reference signal receiving power in the cooperative cell set.

The level threshold refers to a threshold value corresponding to a user MCS level preset by a service person, and a specific value of the level threshold may be determined according to a service requirement, which is not limited in the embodiment of the present invention.

When the MCS level of the user is less than the level threshold, it may be determined that the terminal device is an edge device (i.e., an edge user) of the serving cell.

In the embodiment of the invention, the cooperative cell of the service cell is configured only when the terminal is the edge device.

The first neighbor cell refers to a neighbor cell with the maximum Reference Signal Received Power (RSRP) in the coordinated cell set.

When the MCS level of the user corresponding to the terminal is less than the level threshold, a neighboring cell with the maximum RSRP may be obtained from a pre-configured cooperation cell set to serve as the first neighboring cell, specifically, RSRPs of all neighboring cells actively owned by the cooperation cell set may be obtained, and the RSRPs of the neighboring cells are compared to obtain the maximum RSRP, and the neighboring cell corresponding to the maximum RSRP is used as the first neighboring cell.

After acquiring the first neighboring cell in the coordinated cell set corresponding to the preconfigured serving cell,step 103 is performed.

Step 103: and acquiring the utilization rate of the first physical resource block of the first adjacent cell and the number of first access users.

The first physical resource block utilization (i.e. the first PRB utilization) refers to an equivalent PRB utilization of the first neighboring cell for each user.

The first access user number refers to the number of user equipment accessing the first neighboring cell, that is, the number of terminals accessing the first neighboring cell.

In the invention, in a determination period, a first neighbor cell can be obtained to count the equivalent PRB utilization Rate of each user, and the equivalent PRB utilization Rate of each user is accumulated to obtain the total equivalent PRB utilization Rate, the equivalent PRB utilization Rate calculation formula is the sum of the PRB utilization Rate occupied by a GBR (Guaranteed Bit Rate) bearer and the PRB utilization Rate occupied by a non-GBR bearer, and the PRB utilization Rate occupied by the non-GBR bearer can be converted by the product of the set minimum uplink Rate and the actual uplink Rate of the non-GBR bearer and the PRB utilization Rate of the actual non-GBR bearer.

The number of access users of the first neighboring cell may be obtained by the serving cell according to the recording content of the base station to which the first neighboring cell belongs, and in particular, the obtaining process is not limited in the embodiments of the present invention.

After the first physical resource block utilization rate and the first access user number of the first neighboring cell are obtained,step 104 is executed.

Step 104: and acquiring a first load rate of a base station to which the first adjacent cell belongs under the condition that the utilization rate of the first physical resource block is greater than a utilization rate threshold and the number of the first access users is greater than a user number threshold.

The utilization rate threshold refers to a threshold value corresponding to the PRB utilization rate preset by service personnel.

The user number threshold refers to a threshold value corresponding to the number of neighboring cell access users preset by service personnel.

The specific values of the utilization threshold and the user number threshold may be determined according to service requirements, and the embodiment of the present invention does not limit this.

After the first PRB utilization rate and the first number of accessed users of the first adjacent cell are obtained, the first PRB utilization rate can be compared with a utilization rate threshold, and the first number of accessed users can be compared with a user number threshold.

When the first PRB utilization rate is less than or equal to the utilization rate threshold or the number of first access users is less than or equal to the user number threshold, the first neighboring cell may be removed from the cooperative cell set.

The first load rate refers to a load rate of a base station to which the first neighboring cell belongs, specifically, the load rate of the base station to which the first neighboring cell belongs may include one or more of a load rate of a transmission resource of the base station, a load rate of a Central Processing Unit (CPU) of the base station, a memory load rate of the base station, and the like, and specifically, the load rate may be determined according to a service requirement.

When the first PRB utilization is greater than the utilization threshold and the first access user is greater than the user threshold, a first load factor of the base station to which the first neighboring cell belongs may be obtained.

After obtaining the first load factor of the base station to which the first neighboring cell belongs,step 105 is executed.

Step 105: and taking the first adjacent cell as a cooperative cell of the serving cell under the condition that the first load rate is smaller than a load rate threshold.

The load rate threshold refers to a threshold value which is preset by service personnel and is used for comparing the load rate of the base station to which the first adjacent cell belongs.

The specific value of the load rate threshold may be determined according to the service requirement, and the embodiment of the present invention is not limited thereto.

After obtaining the first load rate of the base station to which the first neighboring cell belongs, the first load rate may be compared with a load rate threshold.

When the first coincidence rate is greater than or equal to the load rate threshold, the first neighboring cell may be removed from the cooperative cell set, and the neighboring cell with the largest RSRP is selected from the cooperative cell set, so as to perform the determination process fromstep 103 to step 105 on the neighboring cell with the largest newly selected RSRP, so as to determine whether to use the neighboring cell with the largest newly selected RSRP as the cooperative cell of the serving cell.

When the first load rate is smaller than the load rate threshold, the first neighboring cell may be used as a cooperative cell of the serving cell.

The embodiment of the invention avoids the situation that the high-load cell is taken as the cooperative cell by increasing the judgment of the load state of the cooperative cell, thereby improving the overall performance of the uplink JR technology and better adapting to the network environment problem of the existing network.

The method for determining a coordinated cell according to the embodiment of the present invention obtains a MCS level of a user corresponding to a terminal after receiving an a3 measurement event of coordinated multipoint transmission reported by the terminal, obtains a first neighboring cell in a coordinated cell set corresponding to a preconfigured serving cell when the MCS level of the user is less than a level threshold, where the first neighboring cell is a coordinated cell with the largest reference signal receiving power in the coordinated cell set, obtains a first physical resource block utilization rate and a first number of access users of the first neighboring cell, obtains a first load rate of a base station to which the first neighboring cell belongs when the first physical resource block utilization rate is greater than the utilization rate threshold and the first number of access users is greater than the user number threshold, and uses the first neighboring cell as a coordinated cell of the serving cell when the first load rate is less than the load rate threshold. The embodiment of the invention avoids the situation that the high-load cell is taken as the cooperative cell by increasing the judgment of the load state of the cooperative cell, thereby improving the overall performance of the uplink JR technology and better adapting to the network environment problem of the existing network.

Example two

Referring to fig. 2, a flowchart of steps of a method for determining a coordinated cell according to an embodiment of the present invention is shown, where the method for determining a coordinated cell may be applied to a serving cell, and specifically includes the following steps:

step 201: and after receiving an A3 measurement event of coordinated multipoint transmission reported by a terminal, acquiring a user MCS level corresponding to the terminal.

In the embodiment of the present invention, the serving cell refers to a cell that needs to configure a cooperative cell, that is, after the cooperative cell is configured, the serving cell and the cooperative cell may jointly receive an uplink signal sent by the UE to implement a receive diversity gain.

And a coordinated cell set configured for the service cell is preset at the service cell side, and all adjacent cells corresponding to the service cell are recorded in the coordinated cell set.

An A3 measurement event of coordinated multipoint transmission is an A3 measurement event of COMP, and after a serving cell receives an A3 measurement event of COMP reported by a terminal, a coordinated cell set corresponding to the serving cell may be maintained to select a neighboring cell from the coordinated cell set as a coordinated cell of the serving cell.

The user MCS level refers to a level of a modulation and coding strategy of the terminal, that is, whether the terminal device is an edge device of a serving cell may be determined according to the user MCS level.

The scheme for obtaining the MCS level of the user corresponding to the terminal is a mature technical scheme in the field, and the embodiment of the present invention is not described herein again.

After acquiring the MCS level of the user corresponding to the terminal,step 202 is executed, or step 203 is executed.

Step 202: and exiting the maintenance process of the cooperative cell set under the condition that the MCS level of the user is greater than or equal to the level threshold.

The level threshold refers to a threshold value corresponding to a user MCS level preset by a service person, and a specific value of the level threshold may be determined according to a service requirement, which is not limited in the embodiment of the present invention.

When the MCS level of the user is less than the level threshold, it may be determined that the terminal device is an edge device (i.e., an edge user) of the serving cell.

In the embodiment of the invention, the cooperative cell of the serving cell is configured only when the terminal is the edge device.

After the user MCS level corresponding to the terminal is obtained, the user MCS level can be compared with the level threshold, and when the user MCS level is greater than or equal to the level threshold, the maintenance process of the cooperative cell set is directly exited, that is, the COMP exits.

Step 203: under the condition that the MCS level of the user is smaller than the level threshold, acquiring a first adjacent cell in a collaborative cell set corresponding to the service cell, wherein the first adjacent cell is configured in advance; the first neighboring cell is a cooperative cell with the maximum reference signal receiving power in the cooperative cell set.

The first neighbor cell refers to a neighbor cell with the largest Reference Signal Received Power (RSRP) in the coordinated cell set.

When the MCS level of the user corresponding to the terminal is less than the level threshold, a neighboring cell with the largest RSRP may be obtained from a pre-configured cooperation cell set to serve as the first neighboring cell, specifically, RSRPs of all neighboring cells actively belonging to the cooperation cell set may be obtained, and the RSRPs of the neighboring cells are compared to obtain the largest RSRP, and the neighboring cell corresponding to the largest RSRP is served as the first neighboring cell.

After acquiring the first neighboring cell in the collaborative cell set corresponding to the preconfigured serving cell,step 204 is executed.

Step 204: and acquiring the utilization rate of the first physical resource block of the first adjacent cell and the number of first access users.

The first physical resource block utilization (i.e. the first PRB utilization) refers to an equivalent PRB utilization of the first neighboring cell for each user.

The first access user number refers to the number of user equipment accessing the first neighboring cell, that is, the number of terminals accessing the first neighboring cell.

In the invention, in a determination period, a first neighbor cell can be obtained to count the equivalent PRB utilization Rate of each user, and the equivalent PRB utilization Rate of each user is accumulated to obtain the total equivalent PRB utilization Rate, the equivalent PRB utilization Rate calculation formula is the sum of the PRB utilization Rate occupied by a GBR (Guaranteed Bit Rate) bearer and the PRB utilization Rate occupied by a non-GBR bearer, and the PRB utilization Rate occupied by the non-GBR bearer can be converted by the product of the set minimum uplink Rate and the actual uplink Rate of the non-GBR bearer and the PRB utilization Rate of the actual non-GBR bearer.

The number of access users of the first neighboring cell may be obtained by the serving cell according to the recording content of the base station to which the first neighboring cell belongs, and in particular, the obtaining process is not limited in the embodiments of the present invention.

After the first physical resource block utilization rate and the first number of access users of the first neighboring cell are obtained,step 205 is executed, or step 208 is executed.

Step 205: and under the condition that the utilization rate of the first physical resource block is less than or equal to the utilization rate threshold or the number of the first access users is less than or equal to the user number threshold, removing the first adjacent cell from the cooperative cell set.

The utilization rate threshold refers to a threshold value corresponding to the PRB utilization rate preset by service personnel.

The user number threshold refers to a threshold value corresponding to the number of neighboring cell access users preset by service personnel.

The specific values of the utilization threshold and the user number threshold may be determined according to service requirements, and the embodiment of the present invention does not limit this.

After the first PRB utilization rate and the first access user number of the first neighboring cell are obtained, the first PRB utilization rate may be compared with a utilization rate threshold, and the first access user number is compared with a user number threshold.

When the first PRB utilization rate is less than or equal to the utilization rate threshold, or the number of first access users is less than or equal to the user number threshold, the first neighboring cell may be removed from the cooperative cell set.

After the first neighbor cell is removed from the cooperative cell set, steps 206 and 212 are performed.

Step 206: and acquiring the occupancy rate of the first physical resource blocks of all terminals accessed to the first adjacent cell.

The first physical resource block occupancy (i.e. the first PRB occupancy) refers to the PRB occupancy of all terminals accessing the first neighbor cell.

After the first neighboring cell is removed from the cooperative cell set, all terminal devices accessed to the first neighboring cell may be acquired, and the first PRB occupancy rates of all terminal devices accessed to the first neighboring cell may be acquired.

After acquiring the first PRB occupancy of all terminals accessing the first neighboring cell,step 207 is executed.

Step 207: and blindly switching the terminal with the occupancy rate of the first physical resource block larger than the first occupancy rate threshold value to the pilot frequency adjacent cell with the same coverage and the load lower than the first threshold value.

The first occupancy rate threshold is a threshold of PRB occupancy rates preset by service personnel and compared with all terminals accessed to the first neighbor cell.

The size of the first occupancy threshold may be determined according to the traffic demand, and the embodiment of the present invention does not limit this.

After the first PRB occupancy rates of all terminals accessing the first neighboring cell are obtained, each first PRB occupancy rate may be compared with a first occupancy rate threshold, so as to obtain a comparison result.

After the comparison result is obtained, the terminal with the first PRB occupancy greater than the first occupancy threshold is blindly cut to the pilot frequency neighboring cell with the same coverage and the load lower than the first occupancy threshold according to the comparison result, that is, the user with low QCI (QoS Class Identifier, scale value) level and high PRB occupancy in the cell can be screened out according to the cached data and blindly cut to the pilot frequency neighboring cell with the same coverage and low cell load, so as to reduce the load condition of the cell.

Step 208: and acquiring a first load rate of a base station to which the first adjacent cell belongs under the condition that the utilization rate of the first physical resource block is greater than a utilization rate threshold and the number of the first access users is greater than a user number threshold.

The first load rate refers to a load rate of a base station to which the first neighboring cell belongs, specifically, the load rate of the base station to which the first neighboring cell belongs may include one or more of a load rate of a transmission resource of the base station, a load rate of a Central Processing Unit (CPU) of the base station, a load rate of a memory of the base station, and the like, and specifically, the load rate may be determined according to a service requirement.

When the first PRB utilization rate is greater than the utilization rate threshold and the first access user is greater than the user number threshold, a first load rate of the base station to which the first neighboring cell belongs may be obtained.

In a preferred embodiment of the present invention, thestep 208 may include:

substep S1: and acquiring the resource load rate, the central processing unit load rate and the memory load rate of the transmission resource of the base station to which the first adjacent cell belongs.

In this embodiment of the present invention, the resource loading rate refers to a loading rate of transmission resources of a base station to which the first neighboring cell belongs.

The load rate of the central processing unit (i.e. the load rate of the CPU) refers to the load rate of the CPU of the base station to which the first neighboring cell belongs.

The memory load rate refers to the load rate of the memory of the base station to which the first neighboring cell belongs.

The process of obtaining the first load factor of the base station to which the first neighboring cell belongs specifically includes: and acquiring the resource load rate, the CPU load rate and the memory load rate of the transmission resource of the base station to which the first adjacent cell belongs.

After the first load factor of the base station to which the first neighboring cell belongs is obtained,step 209 is executed, or step 216 is executed.

Step 209: and under the condition that the first load rate is greater than or equal to a load rate threshold, removing the first adjacent cell from the cooperative cell set.

The load rate threshold refers to a threshold value corresponding to the load rate of the base station preset by service personnel.

The specific value of the load rate threshold may be determined according to the service requirement, which is not limited in the embodiment of the present invention.

When the first load rate is greater than or equal to the load rate threshold, the first neighboring cell may be removed from the cooperative cell set.

After the first neighbor cell is removed from the cooperative cell set,step 210 is performed, and step 212 is performed.

Step 210: and acquiring the occupancy rate of a second physical resource block of all terminals accessed to the first adjacent cell.

The second physical resource block occupancy (i.e. the second PRB occupancy) refers to the PRB occupancy of all terminals accessing the first neighbor cell.

After the first neighboring cell is removed from the cooperative cell set, all terminal devices accessed to the first neighboring cell may be acquired, and the second PRB occupancy rates of all terminal devices accessed to the first neighboring cell may be acquired.

After acquiring the second PRB occupancy of all terminals accessing the first neighbor cell,step 211 is performed.

Step 211: and blindly switching the terminal with the second physical resource block occupancy rate larger than the second occupancy rate threshold value to the pilot frequency adjacent cell with the same coverage load lower than the second threshold value.

The second occupancy rate threshold is a threshold of PRB occupancy rates preset by service personnel and compared with all terminals accessed to the first neighbor cell.

The size of the second occupancy threshold may be determined according to the service requirement, and the embodiment of the present invention does not impose a limitation on this.

After the second PRB occupancy rates of all terminals accessing the first neighboring cell are obtained, each second PRB occupancy rate may be compared with a second occupancy rate threshold, so as to obtain a comparison result.

After the comparison result is obtained, the terminal with the second PRB occupancy greater than the second occupancy threshold may be blindly switched to the inter-frequency neighboring cell with the same coverage and a load lower than the second occupancy threshold according to the comparison result, that is, the user with low QCI (quality of service Identifier, scale value) level and high PRB occupancy in the cell may be screened out according to the cached data and blindly switched to the inter-frequency neighboring cell with the same coverage and low cell load, so as to reduce the load condition of the cell.

Step 212: acquiring a second neighboring cell in the cooperative cell set; the second neighboring cell is a cooperative cell with the maximum reference signal receiving power in the cooperative cell set.

The second adjacent cell refers to the adjacent cell with the maximum RSRP selected from the cooperative cell set after the first adjacent cell is removed from the cooperative cell set.

After acquiring the second neighboring cell in the cooperative cell set,step 213 is performed.

Step 213: and acquiring the utilization rate of a second physical resource block of the second adjacent cell and the number of second access users.

The second physical resource block utilization rate (i.e. the first PRB utilization rate) refers to an equivalent PRB utilization rate for each user of the second neighboring cell.

The second access user number refers to the number of user equipment accessing the second neighboring cell, that is, the number of terminals accessing the second neighboring cell.

In the invention, in a determination period, a second neighboring cell can be obtained to count the equivalent PRB utilization Rate of each user, and the equivalent PRB utilization Rate of each user is accumulated to obtain the total equivalent PRB utilization Rate, wherein the equivalent PRB utilization Rate calculation formula is the sum of the PRB utilization Rate occupied by a GBR (Guaranteed Bit Rate) bearer and the PRB utilization Rate occupied by a non-GBR bearer, and the PRB utilization Rate occupied by the non-GBR bearer can be converted by the product of the set minimum uplink Rate and the actual uplink Rate of the non-GBR bearer and the actual PRB utilization Rate of the non-GBR bearer.

The number of access users of the second neighboring cell may be obtained by the serving cell according to the recording content of the base station to which the second neighboring cell belongs, and in particular, the obtaining process is not limited in the embodiments of the present invention.

After the second physical resource block utilization rate and the second access user number of the second neighboring cell are obtained,step 214 is executed.

Step 214: and acquiring a second load rate of the base station to which the second adjacent cell belongs under the condition that the utilization rate of the second physical resource block is greater than the utilization rate threshold and the number of the second access users is greater than the user number threshold.

After the second PRB utilization rate and the second number of accessed users of the second adjacent cell are obtained, the second PRB utilization rate can be compared with a utilization rate threshold, and the second number of accessed users can be compared with a user number threshold.

And when the utilization rate of the second PRB is less than or equal to the utilization rate threshold or the number of the second access users is less than or equal to the user number threshold, the second adjacent cell can be removed from the cooperation cell set.

The second load rate refers to a load rate of a base station to which the second neighboring cell belongs, specifically, the load rate of the base station to which the second neighboring cell belongs may include one or more of a load rate of a transmission resource of the base station, a load rate of a Central Processing Unit (CPU) of the base station, a memory load rate of the base station, and the like, and specifically, the load rate may be determined according to a service requirement.

And when the second PRB utilization rate is greater than the utilization rate threshold and the second access user is greater than the user number threshold, acquiring a second load rate of the base station to which the second adjacent cell belongs.

After obtaining the second load factor of the base station to which the second neighboring cell belongs,step 215 is executed.

Step 215: and taking the second neighboring cell as a cooperative cell of the serving cell under the condition that the second load rate is smaller than the load rate threshold.

After obtaining the second load rate of the base station to which the second neighboring cell belongs, the second load rate may be compared with the load rate threshold.

When the second load rate is smaller than the load rate threshold, the second neighboring cell may be used as a cooperative cell of the serving cell.

Step 216: and taking the first adjacent cell as a cooperative cell of the serving cell under the condition that the first load rate is smaller than a load rate threshold.

The load rate threshold refers to a threshold value which is preset by service personnel and used for comparing the load rates of the base stations to which the first adjacent cells belong.

The specific value of the load rate threshold may be determined according to the service requirement, and the embodiment of the present invention is not limited thereto.

After obtaining the first load rate of the base station to which the first neighboring cell belongs, the first load rate may be compared with a load rate threshold.

When the first load rate is smaller than the load rate threshold, the first neighboring cell may be used as a cooperative cell of the serving cell. When the first load rate includes a resource load rate, a CPU load rate, and a memory load rate, the first load rate may be compared with corresponding load rate thresholds, respectively, to determine whether the first neighboring cell may be used as a serving cell, and specifically, detailed description will be given in conjunction with the following preferred embodiments.

In a preferred embodiment of the present invention, thestep 216 may include:

sub-step M1: and under the condition that the resource load rate is smaller than a resource load rate threshold, the central processing unit load rate is smaller than a central processing unit load rate threshold, and the memory load rate is smaller than a memory load rate threshold, taking the first adjacent cell as a cooperative cell of the service cell.

In the embodiment of the present invention, the resource load rate threshold refers to a threshold value that is preset by a service person and is compared with the load rate of the transmission resource of the base station.

The central processing unit load rate threshold (i.e. CPU load rate threshold) refers to a threshold value preset by service personnel and compared with the load rate of the CPU of the base station.

The memory load rate threshold refers to a threshold value which is preset by service personnel and is compared with the memory load rate of the base station.

The specific values of the resource load rate threshold, the CPU load rate threshold, and the memory load rate threshold may be determined according to the service requirement, which is not limited in the embodiments of the present invention.

After the resource load rate, the CPU load rate, and the memory load rate of the transmission resource of the base station to which the first neighboring cell belongs are obtained, the resource load rate, the CPU load rate, and the memory load rate of the transmission resource of the base station to which the first neighboring cell belongs may be compared with a resource load rate threshold, a CPU load rate threshold, and a memory load rate threshold, respectively, and when the resource load rate is less than the resource load rate threshold, the CPU load rate is less than the CPU load rate threshold, and the memory load rate is less than the memory load rate threshold, the first neighboring cell is used as a cooperative cell of the serving cell.

The embodiment of the invention avoids the situation that the high-load cell is taken as the cooperative cell by increasing the judgment of the load state of the cooperative cell, thereby improving the overall performance of the uplink JR technology and better adapting to the network environment problem of the existing network.

The method for determining a coordinated cell according to the embodiment of the present invention obtains a MCS level of a user corresponding to a terminal after receiving an a3 measurement event of coordinated multipoint transmission reported by the terminal, obtains a first neighboring cell in a coordinated cell set corresponding to a preconfigured serving cell when the MCS level of the user is less than a level threshold, where the first neighboring cell is a coordinated cell with the largest reference signal receiving power in the coordinated cell set, obtains a first physical resource block utilization rate and a first number of access users of the first neighboring cell, obtains a first load rate of a base station to which the first neighboring cell belongs when the first physical resource block utilization rate is greater than the utilization rate threshold and the first number of access users is greater than the user number threshold, and uses the first neighboring cell as a coordinated cell of the serving cell when the first load rate is less than the load rate threshold. The embodiment of the invention avoids the situation that the high-load cell is taken as the cooperative cell by increasing the judgment of the load state of the cooperative cell, thereby improving the overall performance of the uplink JR technology and better adapting to the network environment problem of the existing network.

EXAMPLE III

Referring to fig. 3, a schematic structural diagram of a cooperative cell determining apparatus provided in an embodiment of the present invention is shown, where the cooperative cell determining apparatus may be applied to a serving cell, and specifically includes the following modules:

an MCS level obtaining module 301, configured to obtain a user MCS level corresponding to a terminal after receiving an a3 measurement event of coordinated multipoint transmission reported by the terminal;

a first neighboring cell obtaining module 302, configured to obtain a first neighboring cell in a pre-configured cooperative cell set corresponding to the serving cell when the MCS level of the user is less than a level threshold; the first adjacent cell is a cooperative cell with the maximum reference signal receiving power in the cooperative cell set;

a first user number obtaining module 303, configured to obtain a first physical resource block utilization rate and a first access user number of the first neighboring cell;

a first load rate obtaining module 304, configured to obtain a first load rate of a base station to which the first neighboring cell belongs when the utilization rate of the first physical resource block is greater than a utilization rate threshold and the number of first access users is greater than a user number threshold;

a coordinated cell obtaining module 305, configured to use the first neighboring cell as a coordinated cell of the serving cell when the first load rate is smaller than a load rate threshold.

The cooperative cell determining apparatus provided in the embodiment of the present invention obtains, after receiving an a3 measurement event of cooperative multipoint transmission reported by a terminal, a user MCS level corresponding to the terminal, obtains, when the user MCS level is smaller than a level threshold, a first neighboring cell in a cooperative cell set corresponding to a preconfigured serving cell, where the first neighboring cell is a cooperative cell with a maximum reference signal receiving power in the cooperative cell set, obtains a first physical resource block utilization rate and a first number of access users of the first neighboring cell, obtains, when the first physical resource block utilization rate is greater than the utilization rate threshold and the first number of access users is greater than the user number threshold, a first load rate of a base station to which the first neighboring cell belongs, and when the first load rate is smaller than the load rate threshold, uses the first neighboring cell as a cooperative cell of the serving cell. The embodiment of the invention avoids the situation that the high-load cell is taken as the cooperative cell by increasing the judgment of the load state of the cooperative cell, thereby improving the overall performance of the uplink JR technology and better adapting to the network environment problem of the existing network.

Example four

Referring to fig. 4, a schematic structural diagram of a cooperative cell determining apparatus provided in an embodiment of the present invention is shown, where the cooperative cell determining apparatus may be applied to a serving cell, and specifically includes the following modules:

an MCS level obtaining module 401, configured to obtain an MCS level of a user corresponding to a terminal after receiving an a3 measurement event of coordinated multipoint transmission reported by the terminal;

a maintenance flow exit module 402, configured to exit the maintenance flow of the cooperative cell set when the MCS level of the user is greater than or equal to the level threshold;

a first neighboring cell obtaining module 403, configured to obtain a first neighboring cell in a collaborative cell set corresponding to the preconfigured serving cell, when the MCS level of the user is less than a level threshold; the first adjacent cell is a cooperative cell with the maximum reference signal receiving power in the cooperative cell set;

a first user number obtaining module 404, configured to obtain a first physical resource block utilization rate and a first access user number of the first neighboring cell;

a first removing module 405, configured to remove the first neighboring cell from the cooperative cell set when the utilization rate of the first physical resource block is less than or equal to the utilization rate threshold, or the number of first access users is less than or equal to the user number threshold;

a first occupancy rate obtaining module 406, configured to obtain a first physical resource block occupancy rate of all terminals accessing the first neighboring cell;

a first cell switching module 407, configured to blindly switch the terminal whose occupancy rate of the first physical resource block is greater than a first occupancy rate threshold to an inter-frequency neighboring cell whose covered load is lower than the first threshold;

a first load rate obtaining module 408, configured to obtain a first load rate of a base station to which the first neighboring cell belongs when the utilization rate of the first physical resource block is greater than a utilization threshold and the number of first access users is greater than a user number threshold;

a second eliminating module 409, configured to eliminate the first neighboring cell from the cooperative cell set when the first load rate is greater than or equal to a load rate threshold;

a second occupancy rate obtaining module 410, configured to obtain a second physical resource block occupancy rate of all terminals accessing the first neighboring cell;

a second cell switching module 411, configured to blindly switch the terminal whose occupancy rate of the second physical resource block is greater than a second occupancy rate threshold to a pilot frequency neighboring cell whose covered load is lower than the second threshold;

a cooperative cell obtaining module 412, configured to use the first neighboring cell as a cooperative cell of the serving cell when the first load rate is smaller than a load rate threshold;

a second neighboring cell obtaining module 413, configured to obtain a second neighboring cell in the cooperative cell set; the second neighboring cell is a cooperative cell with the maximum reference signal receiving power in the cooperative cell set;

a second user number obtaining module 414, configured to obtain a second physical resource block utilization rate and a second access user number of the second neighboring cell;

a second load rate obtaining module 415, configured to obtain a second load rate of the base station to which the second neighboring cell belongs when the second physical resource block utilization rate is greater than the utilization rate threshold and the second access user number is greater than the user number threshold;

a cooperative cell determining module 416, configured to use the second neighboring cell as a cooperative cell of the serving cell when the second load rate is smaller than the load rate threshold.

Preferably, the first load factor obtaining module 408 includes:

a load rate obtaining sub-module, configured to obtain a resource load rate of a transmission resource of a base station to which the first neighboring cell belongs, a central processing unit load rate, and a memory load rate;

the cooperative cell acquisition module 412 includes:

and under the condition that the resource load rate is smaller than a resource load rate threshold, the central processing unit load rate is smaller than a central processing unit load rate threshold, and the memory load rate is smaller than a memory load rate threshold, taking the first adjacent cell as a cooperative cell of the service cell.

The cooperative cell determining apparatus provided in the embodiment of the present invention obtains a MCS level of a user corresponding to a terminal after receiving an a3 measurement event of coordinated multipoint transmission reported by the terminal, obtains a first neighboring cell in a cooperative cell set corresponding to a preconfigured service cell when the MCS level of the user is less than a level threshold, where the first neighboring cell is a cooperative cell with the largest reference signal receiving power in the cooperative cell set, obtains a first physical resource block utilization rate and a first number of access users of the first neighboring cell, obtains a first load rate of a base station to which the first neighboring cell belongs when the first physical resource block utilization rate is greater than the utilization threshold and the first number of access users is greater than the user number threshold, and takes the first neighboring cell as a cooperative cell of the service cell when the first load rate is less than the load rate threshold. The embodiment of the invention avoids the situation that the high-load cell is taken as the cooperative cell by increasing the judgment of the load state of the cooperative cell, thereby improving the overall performance of the uplink JR technology and better adapting to the network environment problem of the existing network.

The embodiments in the present specification are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.

The embodiments in the present specification are all described in a progressive manner, and each embodiment focuses on differences from other embodiments, and portions that are the same and similar between the embodiments may be referred to each other.

As will be appreciated by one skilled in the art, embodiments of the present invention may be provided as a method, apparatus, or computer program product. Accordingly, embodiments of the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, embodiments of the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.

Embodiments of the present invention are described with reference to flowchart illustrations and/or block diagrams of methods, terminal devices (systems), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing terminal to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing terminal, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing terminal to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be loaded onto a computer or other programmable data processing terminal to cause a series of operational steps to be performed on the computer or other programmable terminal to produce a computer implemented process such that the instructions which execute on the computer or other programmable terminal provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

While preferred embodiments of the present invention have been described, additional variations and modifications of these embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including the preferred embodiment and all changes and modifications that fall within the true scope of the embodiments of the present invention.

Finally, it should also be noted that, herein, relational terms such as first and second, and the like may be 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 terminal 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 terminal. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or terminal that comprises the element.

The above detailed description is provided for a method and a device for determining a cooperative cell according to the present invention, and a specific example is applied in the present document to explain the principle and the implementation of the present invention, and the description of the above embodiment is only used to help understanding the method and the core idea of the present invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, the specific embodiments and the application range may be changed, and in summary, the content of the present specification should not be construed as a limitation to the present invention.

Claims (10)

1. A method for determining a cooperative cell is applied to a serving cell, and the method comprises the following steps:

after receiving an A3 measurement event of coordinated multipoint transmission reported by a terminal, acquiring a user MCS level corresponding to the terminal;

under the condition that the MCS level of the user is smaller than the level threshold, acquiring a first adjacent cell in a collaborative cell set corresponding to the service cell, wherein the first adjacent cell is configured in advance; the first neighboring cell is a cooperative cell with the maximum reference signal receiving power in the cooperative cell set;

acquiring the utilization rate of a first physical resource block and the number of first access users of the first adjacent cell;

under the condition that the utilization rate of the first physical resource block is less than or equal to the utilization rate threshold or the number of the first access users is less than or equal to the user number threshold, the first adjacent cell is removed from the cooperative cell set;

acquiring the occupancy rate of a first physical resource block of all terminals accessed to the first adjacent cell;

the terminal with the occupancy rate of the first physical resource block larger than the first occupancy rate threshold is blindly cut to a pilot frequency adjacent cell with the same coverage and the load lower than the first threshold;

acquiring a first load rate of a base station to which the first neighboring cell belongs under the condition that the utilization rate of the first physical resource block is greater than a utilization rate threshold and the number of first access users is greater than a user number threshold, wherein the first load rate may include one or more of load rates of transmission resources of the base station, a CPU of the base station, a memory load rate of the base station and the like;

and taking the first adjacent cell as a cooperative cell of the serving cell under the condition that the first load rate is smaller than a load rate threshold.

2. The method of claim 1, wherein after the step of obtaining the MCS level of the user corresponding to the terminal, the method further comprises:

and when the MCS level of the user is greater than or equal to the level threshold, the maintenance flow of the cooperative cell set is exited.

3. The method of claim 1, wherein after the step of obtaining the first load factor of the base station to which the first neighboring cell belongs, the method further comprises:

under the condition that the first load rate is greater than or equal to a load rate threshold, removing the first adjacent cell from the cooperative cell set;

acquiring the occupancy rate of a second physical resource block of all terminals accessed to the first adjacent cell;

and blindly switching the terminal with the second physical resource block occupancy rate larger than the second occupancy rate threshold value to the pilot frequency adjacent cell with the same coverage load lower than the second threshold value.

4. The method according to claim 1 or 3, wherein after the step of removing the first neighbor cell from the set of cooperating cells, further comprising:

acquiring a second neighboring cell in the cooperative cell set; the second neighboring cell is a cooperative cell with the maximum reference signal receiving power in the cooperative cell set;

acquiring the utilization rate of a second physical resource block of the second adjacent cell and the number of second access users;

acquiring a second load rate of the base station to which the second adjacent cell belongs under the condition that the utilization rate of the second physical resource block is greater than the utilization rate threshold and the number of the second access users is greater than the user number threshold;

and taking the second adjacent cell as a cooperative cell of the serving cell under the condition that the second load rate is smaller than the load rate threshold.

5. The method of claim 1, wherein the step of obtaining the first load factor of the base station to which the first neighboring cell belongs comprises:

acquiring the resource load rate, the central processing unit load rate and the memory load rate of the transmission resource of the base station to which the first adjacent cell belongs;

the step of using the first neighboring cell as the cooperation cell of the serving cell when the first load rate is smaller than a load rate threshold includes:

and under the condition that the resource load rate is smaller than a resource load rate threshold, the central processing unit load rate is smaller than a central processing unit load rate threshold, and the memory load rate is smaller than a memory load rate threshold, taking the first adjacent cell as a cooperative cell of the service cell.

6. A cooperative cell determining apparatus applied to a serving cell, comprising:

the system comprises an MCS level acquisition module, a measurement processing module and a processing module, wherein the MCS level acquisition module is used for acquiring a user MCS level corresponding to a terminal after receiving an A3 measurement event of coordinated multipoint transmission reported by the terminal;

a first neighboring cell obtaining module, configured to obtain a first neighboring cell in a collaborative cell set corresponding to the preconfigured serving cell, when the MCS level of the user is less than a level threshold; the first neighboring cell is a cooperative cell with the maximum reference signal receiving power in the cooperative cell set;

a first user number obtaining module, configured to obtain a first physical resource block utilization rate and a first access user number of the first neighboring cell;

a first removing module, configured to remove the first neighboring cell from the cooperative cell set when the first physical resource block utilization rate is less than or equal to the utilization rate threshold, or the first access user number is less than or equal to a user number threshold;

a first occupancy rate acquisition module, configured to acquire first physical resource block occupancy rates of all terminals accessing the first neighboring cell;

the first cell switching module is used for blindly switching the terminal with the occupancy rate of the first physical resource block larger than a first occupancy rate threshold value to a pilot frequency adjacent cell with the same coverage load lower than the first threshold value;

a first load rate obtaining module, configured to obtain a first load rate of a base station to which a first neighboring cell belongs when a utilization rate of the first physical resource block is greater than a utilization rate threshold and a number of first access users is greater than a user number threshold, where the first load rate may include one or more of a load rate of transmission resources of the base station, a load rate of a CPU of the base station, and a load rate of a memory of the base station;

a cooperative cell obtaining module, configured to use the first neighboring cell as a cooperative cell of the serving cell when the first load rate is smaller than a load rate threshold.

7. The apparatus of claim 6, further comprising:

and the maintenance flow exit module is used for exiting the maintenance flow of the cooperative cell set under the condition that the MCS level of the user is greater than or equal to the level threshold.

8. The apparatus of claim 6, further comprising:

a second rejecting module, configured to reject the first neighboring cell from the cooperative cell set when the first load rate is greater than or equal to a load rate threshold;

a second occupancy rate acquisition module, configured to acquire second physical resource block occupancy rates of all terminals accessing the first neighboring cell;

and the second cell switching module is used for blindly switching the terminal with the second physical resource block occupancy rate larger than the second occupancy rate threshold value to the pilot frequency adjacent cell with the same coverage and the load lower than the second threshold value.

9. The apparatus of claim 7 or 8, further comprising:

a second neighboring cell acquiring module, configured to acquire a second neighboring cell in the cooperative cell set; the second neighboring cell is a cooperative cell with the maximum reference signal received power in the cooperative cell set;

a second user number obtaining module, configured to obtain a second physical resource block utilization rate and a second access user number of the second neighboring cell;

a second load rate obtaining module, configured to obtain a second load rate of the base station to which the second neighboring cell belongs when the second physical resource block utilization rate is greater than the utilization rate threshold and the second access user number is greater than the user number threshold;

a cooperative cell determining module, configured to use the second neighboring cell as a cooperative cell of the serving cell when the second load rate is smaller than the load rate threshold.

10. The apparatus of claim 6, wherein the first load rate obtaining module comprises:

a load rate obtaining sub-module, configured to obtain a resource load rate of a transmission resource of a base station to which the first neighboring cell belongs, a central processing unit load rate, and a memory load rate;

the cooperative cell acquisition module comprises:

and taking the first adjacent cell as a cooperative cell of the service cell under the condition that the resource load rate is less than a resource load rate threshold, the central processing unit load rate is less than a central processing unit load rate threshold and the memory load rate is less than a memory load rate threshold.

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