CN109219121B

CN109219121B - Power control method and related equipment

Info

Publication number: CN109219121B
Application number: CN201710518533.2A
Authority: CN
Inventors: 姚霈; 杨铮杰; 赵国强; 葛强
Original assignee: Shanghai Huawei Technologies Co Ltd
Current assignee: Shanghai Huawei Technologies Co Ltd
Priority date: 2017-06-29
Filing date: 2017-06-29
Publication date: 2020-12-01
Anticipated expiration: 2037-06-29
Also published as: CN109219121A; WO2019001161A1

Abstract

The embodiment of the application discloses a power control method and related equipment, which are used for accurately controlling the power of an interference source cell and reducing the interference of the interference source cell to a service cell. The method in the embodiment of the application comprises the following steps: a Base Station Controller (BSC) identifies a neighboring cell of a service cell to obtain an interference source cell interfering the service cell; if the downlink receiving quality of the service cell is less than a preset threshold, the BSC determines a target time sequence number according to target frames of different frame types in the service cell; and the BSC sends a power control starting command to the interference source cell, wherein the power control starting command is used for indicating the interference source cell to perform power control on a downlink air interface frame corresponding to the target time sequence number, and the power control starting command carries information of the target time sequence number, so that the BSC controls the interference source cell to reduce interference on the serving cell.

Description

Power control method and related equipment

Technical Field

The present application relates to the field of mobile communications, and in particular, to a power control method and related device.

Background

With the rapid development of mobile communication technology, frequency re-establishment in a global system for mobile communication (GSM) network is increasing, a network bandwidth of the GSM network becomes narrower, frequency re-establishment is more frequent, and a time interval between two frequency re-establishments is smaller, so that interference between signals of the same frequency in the GSM network is greatly increased, and a downlink reception quality of a Mobile Station (MS) is lower than a preset threshold.

In the prior art, a Base Station Controller (BSC) in a Base Station Subsystem (BSS) controls a transmit power of a Base Transceiver Station (BTS) according to a measurement report of a reception level and a reception quality of an uplink and a downlink reported by an MS, and when interference between signals of the same frequency is large, the BSC controls the BTS to reduce the transmit power on the premise that the downlink reception quality is not lower than a preset threshold, thereby reducing interference between signals of the same frequency in a GSM network.

In the prior art, the BSC controls the BTS to reduce the transmission power to reduce the interference between the same frequency signals, that is, to reduce the interference between the same frequency signals between MSs by reducing the average interference level of the entire network, so that the prior art does not accurately find the interference source and performs targeted power control on the interference source.

Disclosure of Invention

The embodiment of the application provides a power control method and related equipment, which are used for accurately controlling the power of an interference source cell and reducing the interference of the interference source cell to a service cell.

In a first aspect, an embodiment of the present application provides a power control method, including: firstly, a base station controller BSC identifies a neighboring cell adjacent to a service cell to obtain a neighboring cell which generates interference on the service cell, namely an interference source cell; secondly, when the downlink receiving quality of the serving cell is less than a preset threshold, the BSC determines a target time sequence number according to target frames of different frame types in the serving cell, wherein the target time sequence number is a time sequence number in the interference source cell, which is corresponding to the fact that the downlink receiving quality of the serving cell is lower than the preset threshold due to the interference of the interference source cell to the serving cell, and it should be understood that the transmission power corresponding to a downlink air interface frame corresponding to the target time sequence number is too high to generate interference to the serving cell; and finally, the BSC sends a power control starting command to the interference source cell, wherein the power control starting command carries the information of the target time sequence number, so that when the interference source cell receives the power control starting command, the power control is carried out on a downlink air interface frame corresponding to the target time sequence number, and the interference of the interference source cell to the serving cell is reduced.

According to the technical scheme, the embodiment of the application has the following advantages: the BSC identifies an interference source cell generating co-frequency interference on a service cell, and when the downlink receiving quality of the service cell is lower than a preset threshold (namely the downlink receiving quality of the service cell is poor), the BSC determines a target time sequence number needing power control in the interference source cell according to different types of target frames, so that the BSC sends a power control starting command carrying the target time sequence number to the interference source cell, the interference source cell performs power control on a downlink air interface frame corresponding to the target time sequence number, and the co-frequency interference of the interference source cell on the service cell is reduced. Therefore, the target time sequence number corresponding to the downlink air interface frame which generates interference to the serving cell can be accurately obtained, and the interference of the interference source cell to the serving cell is reduced by controlling the downlink air interface frame corresponding to the target time sequence number.

In a possible design, in a first possible implementation manner of the first aspect, the target frame includes: a downlink speech frame, a downlink Slow Associated Control Channel (SACCH) frame, or a downlink Fast Associated Control Channel (FACCH) frame.

In a possible design, a second possible implementation manner of the first aspect, where, when the target frame is a downlink speech frame or a downlink SACCH frame, the BSC determines the target timing sequence number according to target frames of different frame types in a serving cell, includes:

BSC calculates the empty interface frame of the interference source to obtain the corresponding target time sequence number in the interference source cell.

In a possible design, in a third possible implementation manner of the first aspect, when the target frame is a downlink FACCH frame, the method further includes:

when the retransmission times of the downlink FACCH frame are greater than or equal to the preset times, the BSC determines the target time sequence number according to the downlink FACCH frame, wherein the preset times are the preset retransmission times corresponding to retransmission of the downlink FACCH frame, the retransmission times are at least one time, the specific preset times can be determined according to a specific application scene, and the method is not limited.

Secondly, in a third possible implementation manner of the first aspect, for a downlink FACCH frame, power control may be performed according to downlink reception quality, and power control may be performed on an interference source cell by determining retransmission times.

In a possible design, in a fourth possible implementation manner of the first aspect, the determining, by the BSC, the target timing sequence number according to the downlink FACCH frame includes:

the BSC fixes the corresponding time sequence serial number when retransmitting the downlink FACCH frame (namely, the fixed time sequence serial number is used for retransmitting the downlink FACCH frame), so that the BSC determines the fixed time sequence serial number of the retransmitted FACCH frame;

and the BSC calculates an interference source air interface frame for the FACCH frame according to the fixed time sequence number to obtain the corresponding target time sequence number in the interference source cell.

Secondly, in a fourth possible implementation manner of the first aspect, the timing sequence of the retransmitted downlink FACCH frame is fixed, and the target timing sequence number in the interference source cell is determined according to the fixed timing sequence number.

In a possible design, in a fifth possible implementation manner of the first aspect, when the target frame is a downlink FACCH frame, the method further includes:

if the serving cell actively sends a downlink FACCH frame to the mobile station MS, when the serving cell receives a response frame of the MS, the BSC sends a power control stop command to the interference source cell, wherein the power control stop command is used for instructing the interference source cell to stop performing power control on a downlink air interface frame corresponding to a target time sequence number, and it can be understood that the receiving of the response frame of the MS by the serving cell indicates that the MS successfully receives the downlink FACCH frame sent by the serving cell; or the like, or, alternatively,

if the MS actively sends the uplink FACCH frame to the serving cell, and when the serving cell receives different uplink FACCH frames, the BSC sends the power control stop command to the interference source cell, it can be understood that the MS receives different uplink FACCH frames, which indicates that the MS does not retransmit, and the downlink reception quality is good; or the like, or, alternatively,

and if the channel corresponding to the downlink FACCH frame is released, the BSC sends the power control stop command to the interference source cell.

In a possible design, in a sixth possible implementation manner of the first aspect, the method further includes:

and when the downlink receiving quality of the serving cell is greater than or equal to a preset threshold, the BSC sends the power control stop command to the interference source cell, wherein the power control stop command is used for instructing the interference source cell to stop performing power control on a downlink air interface frame corresponding to the target sequence number.

Secondly, in a fifth possible implementation manner of the first aspect or a sixth possible implementation manner of the first aspect, the BSC may timely and accurately determine that power control over the interference source cell is no longer needed, and may better control co-channel interference of the interference source cell.

In a second aspect, the present application provides a calibration value verification method, including: firstly, when an interference source cell receives a power control starting command sent by a base station controller BSC, the interference source cell determines a target time sequence number according to the power control starting command, wherein the target time sequence number is a time sequence number in the interference source cell corresponding to the fact that the downlink receiving quality of a service cell is lower than a preset threshold due to co-channel interference;

and secondly, the interference source cell performs power control on the downlink air interface frame corresponding to the target time sequence number so as to reduce the interference of the interference source cell on the service cell.

According to the technical scheme, the embodiment of the application has the following advantages: and the interference source cell performs power control on the downlink air interface frame corresponding to the target time sequence number in the interference source cell through a power control starting command sent by the BSC, so that the interference of the interference source cell on the service cell is reduced.

In a possible design, in a first possible implementation manner of the second aspect, the performing, by an aggressor cell, power control on a downlink air interface frame corresponding to a target timing sequence number includes:

and the interference source cell controls the transmitting power of the downlink air interface frame corresponding to the target time sequence number in the interference source cell according to a preset power control method.

In a first possible implementation manner of the second aspect, the transmission power of the downlink air interface frame corresponding to the target timing sequence number in the interference source cell is reduced by using a preset power control method, so that the co-channel interference of the interference source cell to the serving cell can be effectively reduced.

In one possible design, in a second possible implementation manner of the second aspect, the method further includes:

and when the interference source cell receives a power control stop command sent by the BSC, the interference source cell stops performing power control on the downlink air interface frame corresponding to the target time sequence number.

In a third aspect, an embodiment of the present application provides a BSC having a function of implementing a BSC behavior in the foregoing method embodiment. The function can be realized by hardware, and can also be realized by executing corresponding software by hardware. The hardware or software includes one or more modules corresponding to the functions described above.

In a fourth aspect, an embodiment of the present application provides a BSC, including: a processor, a memory, a bus, a transmitter, and a receiver; the memory is used for storing computer execution instructions, the processor is connected with the memory through the bus, and when the BSC runs, the processor executes the computer execution instructions stored in the memory, so that the BSC executes the power control method according to any one of the first aspect.

In a fifth aspect, embodiments of the present application provide a computer-readable storage medium for storing computer software instructions for the BSC, which when executed on a computer, enable the computer to perform the power control method of any one of the first aspects.

In a sixth aspect, embodiments of the present application provide a computer program product containing instructions, which when run on a computer, enable the computer to perform the power control method of any one of the first aspect.

In addition, the technical effects brought by any one of the design manners of the third aspect to the sixth aspect can be referred to the technical effects brought by different design manners of the first aspect, and are not described herein again.

In a seventh aspect, an embodiment of the present application provides an interferer cell, where the interferer cell has a function of implementing behavior of the interferer cell in the foregoing method embodiment. The function can be realized by hardware, and can also be realized by executing corresponding software by hardware. The hardware or software includes one or more modules corresponding to the functions described above.

In an eighth aspect, an embodiment of the present application provides an interferer cell, including: a processor, a memory, a bus, a transmitter, and a receiver; the memory is configured to store computer executable instructions, and the processor is connected to the memory through the bus, and when the aggressor cell is operating, the processor executes the computer executable instructions stored in the memory, so as to cause the aggressor cell to perform the power control method according to any one of the above second aspects.

In a ninth aspect, the present application provides a computer-readable storage medium for storing computer software instructions for the above-mentioned interference source cell, which when run on a computer, make the computer perform the power control method of any one of the above-mentioned second aspects.

In a tenth aspect, embodiments of the present application provide a computer program product containing instructions, which when run on a computer, enable the computer to perform the power control method of any one of the second aspects.

In addition, the technical effects brought by any one of the design manners of the seventh aspect to the tenth aspect can be referred to the technical effects brought by the different design manners of the second aspect, and are not described herein again.

Drawings

FIG. 1 is a system block diagram of a power control method in an embodiment of the present application;

FIG. 2 is a schematic diagram of an embodiment of a power control method in an embodiment of the present application;

FIG. 3 is a schematic diagram of an embodiment of a BSC in the present application;

FIG. 4 is a schematic diagram of another embodiment of a BSC in the present application;

fig. 5 is a schematic diagram of an embodiment of an interferer cell in an embodiment of the present application;

fig. 6 is a schematic diagram of another embodiment of an interferer cell in the embodiment of the present application;

fig. 7 is a schematic diagram of another embodiment of an interferer cell in the embodiment of the present application.

Detailed Description

The terms "first," "second," "third," "fourth," and the like in the description and in the claims of the present application and in the drawings described above, if any, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It will be appreciated that the data so used may be interchanged under appropriate circumstances such that the embodiments described herein may be practiced otherwise than as specifically illustrated or described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

As shown in fig. 1, frequency reuse in a GSM network is more and more frequent, co-channel interference in the network is also increased, a serving cell in the figure is interfered by other five interference source cells, and under the interference of the interference source cells, if downlink reception quality of the serving cell is good (i.e. downlink reception quality is greater than or equal to a preset threshold), a BSC does not need to control transmission power of the interference source cells; if the downlink receiving quality of the serving cell is poor (that is, the downlink receiving quality is less than the preset threshold), the BSC may accurately and properly control the transmitting power of the interference source cell, so that the transmitting power of the interference source cell is reduced, thereby reducing the interference of the interference source cell to the serving cell and improving the downlink receiving quality of the serving cell.

It should be noted that, in the embodiment of the present application, the interference of the interference source cell to the serving cell includes co-channel interference, strong adjacent channel interference, and the like, and the present application is not limited in any way.

In order to better understand the power control method in the embodiment of the present application, the power control method in the present application will be described below with reference to a specific embodiment. The method comprises the following specific steps:

first, an embodiment of a power control method in the present application is schematically illustrated, and includes:

201. and the BSC identifies the adjacent cell of the service cell to obtain an interference source cell interfering the service cell.

In this embodiment, the BSC performs interference identification on the neighboring cell of the serving cell, and determines the neighboring cell that generates co-channel interference with the serving cell as an interference source cell.

Optionally, the BSC determines, according to the frequency resource usage, a neighboring cell with strong co-channel interference to the serving cell, among neighboring cells around the serving cell, as the interference source cell.

Optionally, the BSC may identify the interference source cell by using an identification method such as a network topology, an interference matrix, or an interference source real-time detection method, or may use another method other than the above three methods, which is not limited in this application.

It should be noted that the number of the interference source cells is at least one, and the specific number of the interference source cells may be determined according to an actual application scenario, which is not limited in this application.

202. If the downlink receiving quality of the server cell is less than the preset threshold, the BSC determines a target time sequence number according to target frames of different frame types in the service cell.

In this embodiment, if the BSC detects that the downlink reception quality of the serving cell is less than the preset threshold, the BSC determines a target timing sequence number according to different types of target frames in the serving cell, where the target timing sequence number is a timing sequence number that interferes with the serving cell in the interference source cell, and it can be understood that the downlink reception quality of the serving cell is less than the preset threshold, which indicates that the downlink reception quality of the serving cell is poor.

In addition, it should be noted that although the co-channel interference of the cell as the interference source to the serving cell still exists, if the downlink reception quality of the serving cell is still good (i.e. the downlink reception quality is still greater than or equal to the preset threshold), the BSC need not execute step 202.

Optionally, the target frame includes different types of control frames or data frames, such as a downlink speech frame, a downlink slow associated control channel SACCH frame, or a downlink fast associated control channel FACCH frame.

Optionally, when the target frame is a downlink speech frame or a downlink SACCH frame, the BSC performs calculation on an interference source air interface frame to obtain a corresponding calculation result, and determines, according to the calculation result, the time sequence number of the downlink air interface frame corresponding to the downlink speech frame or the downlink SACCH frame of the serving cell in the interference source cell as the target time sequence number.

Optionally, when the target frame is a downlink FACCH frame, the power control method further includes: and if the retransmission times of the downlink FACCH frame are more than or equal to the preset times, the BSC determines a target time sequence number according to the downlink FACCH frame in the serving cell.

Optionally, when the target frame is a downlink FACCH frame, the determining, by the BSC, the target timing sequence number according to the downlink FACCH frame in the serving cell by the BSC in the serving cell includes: firstly, when the downlink FACCH frame is retransmitted again, the BSC fixes the sequence number of the retransmission of the downlink FACCH frame to obtain a fixed sequence number, and retransmits the downlink FACCH frame on the fixed sequence number; and secondly, the BSC calculates the air interface frame of the interference source according to the fixed time sequence number to obtain the corresponding downlink air interface frame in the interference source cell.

It should be noted that, when the BSC calculates the target sequence number, the BSC also calculates the influence of factors such as frequency hopping, frame offset, and slot offset between the serving cell and the interference source cell.

203. The BSC sends a power control stop command to the interfering cell.

In this embodiment, the BSC sends a power control stop command to the aggressor cell, where the power stop command carries information of a target timing sequence number.

204. And if the interference source cell receives a power control stop command sent by the BSC, the interference source cell determines a target time sequence number according to the power control start command.

In this embodiment, when the aggressor cell receives the power control stop command sent by the BSC, the aggressor cell determines the target timing sequence number according to the power control start command, it can be understood that the aggressor cell may obtain the target timing sequence number by analyzing the power control stop command, or may be in other determination manners, which is not limited in this application.

205. And the interference source cell performs power control on the downlink air interface frame corresponding to the target time sequence number.

In this embodiment, after the aggressor cell determines the target timing sequence number according to the power control start command, the aggressor cell performs power control on the downlink air interface frame corresponding to the target timing sequence number.

Optionally, the interference source cell controls the power of the downlink air interface frame corresponding to the target time sequence number according to a preset power control strategy.

Optionally, a power control manner of the interference source cell for the downlink air interface frame corresponding to the target timing sequence number is as follows: and controlling the power of the downlink air interface frame based on a strategy of a downlink common power control value. The specific control method comprises the following steps: setting a downlink power control maximum threshold, wherein downlink common power control values of a plurality of interference cells do not exceed the downlink power control maximum threshold, the BSC performs power control on the downlink air interface frame according to the downlink common power control values, the downlink common power control values of the plurality of interference cells exceed the downlink power control maximum threshold, and the BSC performs power control on the downlink air interface frame according to the downlink power control maximum threshold. For example: setting the maximum threshold of downlink power control to be 5dB, and calculating by the BSC according to a common power control algorithm to obtain a downlink common power control value of 4dB, wherein the effective actual power control value is equal to the downlink common power control value of 4 dB; and setting the maximum threshold of the downlink power control to be 5dB, and calculating the downlink common power control value to be 7dB according to the common power control algorithm, wherein the effective actual power control value is equal to the maximum threshold of the downlink power control to be 5 dB. It should be noted that the power control method is mainly used in an application scenario in which the target frame is a downlink speech frame, and certainly is not limited to an application scenario in which the target frame is a downlink speech frame.

Optionally, another power control manner of the interference source cell for the downlink air interface frame corresponding to the target timing sequence number is as follows: and controlling the power of the downlink air interface frame based on the strategies of the downlink common power control value and the offset power control value. The specific control method comprises the following steps: and setting an offset power control value on the basis of a downlink common power control value, and controlling the power of the downlink air interface frame. For example: setting the offset power control value to be-2 dB, and calculating to obtain a downlink common power control value of 5dB according to a common power control algorithm, wherein the effective actual power control value is equal to the sum of the downlink common power control value and the offset power control value, and the value is 3 dB; setting the offset power control value to be +2dB, and calculating the downlink common power control value to be 5dB according to the common power control algorithm, wherein the effective actual power control value is equal to the sum of the downlink common power control value and the offset power control value, and the value is 7 dB. It should be noted that the power control method is mainly used in an application scenario in which the target frame is a downlink SACCH frame, and certainly is not limited to an application scenario in which the target frame is a downlink SACCH frame.

Optionally, another power control manner of the interference source cell for the downlink air interface frame corresponding to the target timing sequence number is as follows: and controlling the power of the downlink air interface frame based on a power control direct reduction strategy. The specific control method comprises the following steps: and setting an interference source power control value for the serving cell, wherein the interference source cell responds to the interference source power control value of the serving cell and directly sets the power of the downlink air interface frame as the interference source power control value. For example: and setting the power control value of the interference source to be 5dB, and directly controlling the downlink air interface frame of the interference source cell to be 5dB by the BSC. It should be noted that the power control method is mainly used in an application scenario in which the target frame is a downlink SACCH frame or a downlink FACCH frame, and certainly is not limited to an application scenario in which the target frame is a downlink SACCH frame or a downlink FACCH frame.

It should also be noted that the power control method for the downlink air interface frame corresponding to the target timing sequence number may also be other similar power control methods, and this application is not limited in any way.

206. And if the downlink receiving quality of the service cell is greater than or equal to a preset threshold, the BSC sends a power control stop command to the interference source cell.

In this embodiment, when the downlink reception quality of the serving cell is greater than or equal to the preset threshold, the BSC sends a power control stop command to the interference source cell, where the power control stop command is used to instruct the interference source cell to stop performing power control on a downlink air interface frame corresponding to the target timing sequence number.

Optionally, when the target frame is a downlink speech frame or a downlink SACCH frame, if the downlink reception quality of the serving cell is greater than or equal to a preset threshold, the BSC sends a power control stop command to the interfering source cell.

Optionally, when the target frame is a FACCH frame, the BSC sending the power control stop command further includes the following scenarios: if the serving cell actively sends a downlink FACCH frame to the mobile station MS, when the serving cell receives a response frame of the MS, the BSC sends a power control stop command to the interference source cell, and it can be understood that the receiving of the response frame of the MS by the serving cell indicates that the MS successfully receives the downlink FACCH frame sent by the serving cell; secondly, if the MS actively sends an uplink FACCH frame to the serving cell, when the serving cell receives different uplink FACCH frames, the BSC sends a power control stop command to the MS source cell, and it can be understood that the MS receives different uplink FACCH frames, which indicates that the MS is not retransmitted, and the downlink receiving quality is good; and thirdly, if the channel corresponding to the downlink FACCH frame is released, the BSC sends a power control stop command to the interference source cell.

207. And if the interference source cell receives a power control stop command sent by the BSC, the interference source cell stops controlling the downlink air interface frame corresponding to the target time sequence number.

In this embodiment, when the interference source cell receives a power control stop command sent by the BSC, the interference source cell stops controlling the downlink air interface frame corresponding to the target timing sequence number.

Optionally, when the interference source cell receives the power stop control command, the interference source cell controls the transmission power thereof by using the downlink common power control value.

In this embodiment, the BSC identifies an interference source cell that generates interference with the serving cell, and when the downlink reception quality of the serving cell is lower than a preset threshold (that is, the downlink reception quality of the serving cell is poor), the BSC determines a target timing sequence number that needs to be power controlled in the interference source cell according to different types of target frames, so that the BSC sends a power control start command carrying the target timing sequence number to the interference source cell, so that the interference source cell performs power control on a downlink air interface frame corresponding to the target timing sequence number, and reduces interference of the interference source cell with the serving cell. Therefore, the target time sequence number corresponding to the downlink air interface frame which generates interference to the serving cell can be accurately obtained, and the interference of the interference source cell to the serving cell is reduced by controlling the downlink air interface frame corresponding to the target time sequence number.

The power control method in the present application is explained in detail in the embodiments, and the BSC and the cell of the interferer will be explained separately from the following aspects. The method comprises the following specific steps:

second embodiment, as shown in fig. 3, an embodiment of the BSC in the present application includes:

an identifying unit 301, configured to identify a neighboring cell of a serving cell, to obtain an interference source cell that interferes with the serving cell;

a first determining unit 302, configured to determine a target timing sequence number according to target frames of different frame types in the serving cell if the downlink receiving quality of the serving cell is less than a preset threshold, where the target timing sequence number is a timing sequence number in the interference source cell corresponding to the downlink receiving quality of the serving cell being less than the preset threshold;

a first sending unit 303, configured to send a power control start command to the aggressor cell, where the power control start command is used to instruct the aggressor cell to perform power control on a downlink air interface frame corresponding to the target timing sequence number, and the power control start command carries information of the target timing sequence number, so that the BSC controls the aggressor cell to reduce interference with the serving cell.

Optionally, in a possible design, the target frame includes a downlink speech frame, a downlink slow associated control channel SACCH frame, or a downlink fast associated control channel FACCH frame.

Optionally, as shown in fig. 4, the first determining unit 402 includes a first calculating subunit 4021, and its specific functions are as follows:

a first calculating word unit 4021, configured to perform interference source air interface frame calculation on the downlink speech frame or the downlink SACCH frame to obtain the target timing sequence number.

Optionally, as shown in fig. 4, the BSC further includes a second determining unit 403, and its specific functions are as follows:

a second determining unit 403, configured to determine the target timing sequence number according to the downlink FACCH frame if the retransmission times of the downlink FACCH frame are greater than or equal to a preset number.

Optionally, as shown in fig. 4, the second determining unit 403 includes a timing fixing subunit 4031 and a second calculating subunit 4032, and the specific functions of the two subunits are as follows:

a timing fixing subunit 4031, configured to fix the timing sequence number of the downlink FACCH frame retransmission, to obtain a fixed timing sequence number;

a second calculating subunit 4032, configured to perform interference source air interface frame calculation according to the fixed timing sequence number to obtain the target timing sequence number.

Optionally, as shown in fig. 4, the BSC further includes: a second sending unit 405, a third sending unit 406, and a fourth sending unit 407, and the specific functions of the three units are as follows:

a second sending unit 405, configured to send a power control stop command to the interference source cell when the serving cell receives a response frame of the MS if the serving cell actively sends the downlink FACCH frame to a mobile station MS, where the power control stop command is used to instruct the interference source cell to stop performing power control on a downlink air interface frame corresponding to the target timing sequence number; or the like, or, alternatively,

a third sending unit 406, configured to send the power control stop command to the cell of the interference source when the serving cell receives different FACCH frames if the MS actively sends an uplink FACCH frame to the serving cell; or the like, or, alternatively,

a fourth transmitting unit 407, configured to transmit the power control stop command to the interfering cell if the channel corresponding to the downlink FACCH frame is released.

Optionally, as shown in fig. 4, the BSC further includes a fifth sending unit 408, and its specific functions are as follows:

a fifth sending unit 408, configured to send the power control stop command to the cell as the interference source when the downlink reception quality of the serving cell is greater than or equal to the preset threshold.

In this embodiment, the corresponding beneficial effects of implementing the second embodiment and other related descriptions are similar to the description of the BSC in the first embodiment, please refer to the related description of the BSC in the first embodiment, and the description thereof is omitted here.

Third embodiment, as shown in fig. 5, an embodiment of an interferer cell in the present application includes:

a determining unit 501, configured to determine a target timing sequence number according to a power control start command sent by a base station controller BSC when the interference source cell receives the power control start command, where the target timing sequence number is a timing sequence number in the interference source cell corresponding to a condition that downlink receiving quality of a serving cell is lower than a preset threshold;

a first power control unit 502, configured to perform power control on the downlink air interface frame corresponding to the target timing sequence number, so as to reduce interference of the interference source cell on the serving cell.

Optionally, as shown in fig. 6, the first power control unit 602 includes a power control subunit 6021, and its specific functions are as follows:

a power control subunit 6021, configured to control the transmission power of the downlink air interface frame corresponding to the target time sequence number according to a preset power control method.

Optionally, as shown in fig. 6, the interference source cell further includes a second power control unit 603, and its specific functions are as follows:

a second power control unit 603, configured to stop performing power control on the downlink air interface frame corresponding to the target timing sequence number when the interference source cell receives the power control stop command sent by the BSC.

In this embodiment, the interference source cell performs power control on the downlink air interface frame corresponding to the target timing sequence number in the interference source cell through a power control start command sent by the BSC, so as to reduce interference of the interference source cell on the serving cell. It should be noted that, for other relevant descriptions in this embodiment, please refer to the description of the interfering cell in the first embodiment, which is not described herein again.

The third embodiment describes the base station controller BSC in the embodiment of the present application in detail from the aspect of a functional device, and the following describes the BSC in the embodiment of the present application from the aspect of an entity structure, which may be specifically as follows:

in a fourth embodiment, as shown in fig. 7, another embodiment of the BSC in the embodiment of the present application includes: a receiver 701, a transmitter 702, a processor 703, a memory 704, and a bus 705.

The memory 704 may include read-only memory and random access memory, among other things, and provides instructions and data to the processor 703. A portion of memory 704 may also include non-volatile random access memory (NVRAM).

The memory 704 stores the following elements, executable modules or data structures, or a subset thereof, or an expanded set thereof:

and (3) operating instructions: comprises various operation instructions for realizing various operations;

operating the system: including various system programs for implementing various basic services and for handling hardware-based tasks.

In this embodiment, the processor 703 may be configured to execute operations corresponding to the BSC in the foregoing embodiment, and may include the following operations:

identifying a neighboring cell of a serving cell to obtain an interference source cell interfering with the serving cell;

if the downlink receiving quality of the serving cell is smaller than a preset threshold, determining a target time sequence number according to target frames of different frame types in the serving cell, wherein the target time sequence number is a time sequence number in the interference source cell corresponding to the downlink receiving quality of the serving cell being lower than the preset threshold;

and sending a power control start command to the interference source cell, where the power control start command is used to instruct the interference source cell to perform power control on a downlink air interface frame corresponding to the target timing sequence number, and the power control start command carries information of the target timing sequence number, so that the BSC controls the interference source cell to reduce interference on the serving cell.

The processor 703 may also be configured to perform the relevant operations corresponding to fig. 4 in the second embodiment, and for a detailed description, please refer to the relevant description corresponding to fig. 4 in the second embodiment, which is not described herein again.

The processor 703 controls the operation of the BSC, and the processor 703 may also be referred to as a Central Processing Unit (CPU). The memory 704 may include read-only memory and random access memory, and provides instructions and data to the processor 703. A portion of the memory 704 may also include NVRAM. In a specific application, the various components of the BSC are coupled together by a bus system 705, where the bus system 705 may include a power bus, a control bus, a status signal bus, etc., in addition to a data bus. But for the sake of clarity the various buses are identified in the figure as the bus system 705.

The method disclosed in the embodiment of the present application may be applied to the processor 703 or implemented by the processor 703. The processor 703 may be an integrated circuit chip having signal processing capabilities. In implementation, the steps of the method may be implemented by hardware integrated logic circuits in the processor 703 or by instructions in the form of software. The processor 703 may be a general-purpose processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), a Field Programmable Gate Array (FPGA), or other programmable logic device, discrete gate or transistor logic device, or discrete hardware component. The various methods, steps, and logic blocks disclosed in the embodiments of the present application may be implemented or performed. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like. The steps of the method disclosed in connection with the embodiments of the present application may be directly implemented by a hardware decoding processor, or implemented by a combination of hardware and software modules in the decoding processor. The software module may be located in ram, flash memory, rom, prom, or eprom, registers, etc. storage media as is well known in the art. The storage medium is located in a memory 704, and a processor 703 reads information in the memory 704 and performs the steps of the above method in combination with hardware thereof.

The related description of fig. 7 can be understood with reference to the related description and effects of the method portion of fig. 3, and will not be described in detail herein.

Finally, it should be further noted that an entity structure corresponding to the cell as the interferer is similar to the entity structure of the BSC in the fourth embodiment, and therefore, for the entity structure of the cell as the interferer, please refer to fig. 7 in the embodiment and the related description of fig. 7, and details thereof are not repeated here.

In addition, the processor in the interference source cell is different from the operation executed by the processor 703, and it is to be understood that the relevant operation specifically executed by the processor in the interference source cell is required to participate in the relevant description of the interference source cell in the first embodiment and the relevant description corresponding to fig. 5 and fig. 6 in the third embodiment, which is not described herein again.

It is clear to those skilled in the art that, for convenience and brevity of description, the specific working processes of the above-described systems, apparatuses and units may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.

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

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

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

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

The above embodiments are only used for illustrating the technical solutions of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A method of power control, comprising:

a Base Station Controller (BSC) identifies a neighboring cell of a service cell to obtain an interference source cell interfering the service cell;

if the downlink receiving quality of the serving cell is smaller than a preset threshold, the BSC determines a target time sequence number according to target frames of different frame types in the serving cell, wherein the target time sequence number is a time sequence number in the interference source cell corresponding to the fact that the downlink receiving quality of the serving cell is lower than the preset threshold;

and the BSC sends a power control starting command to the interference source cell, wherein the power control starting command is used for indicating the interference source cell to perform power control on a downlink air interface frame corresponding to the target time sequence number, and the power control starting command carries information of the target time sequence number, so that the BSC controls the interference source cell to reduce interference on the serving cell.

2. The power control method of claim 1, wherein the target frame comprises a downlink speech frame, a downlink Slow Associated Control Channel (SACCH) frame, or a downlink Fast Associated Control Channel (FACCH) frame.

3. The power control method of claim 2, wherein when the target frame is the downlink speech frame or the downlink SACCH frame, the BSC determines a target timing sequence number according to target frames of different frame types in the serving cell, comprising:

and the BSC calculates an interference source air interface frame of the downlink voice frame or the downlink SACCH frame to obtain the target time sequence number.

4. The power control method of claim 2, wherein when the target frame is the downlink FACCH frame, the method further comprises:

and if the retransmission times of the downlink FACCH frame are greater than or equal to the preset times, the BSC determines the target time sequence number according to the downlink FACCH frame.

5. The power control method of claim 4, wherein the BSC determines the target timing sequence number according to the downlink FACCH frame, comprising:

the BSC fixes the sequence number of the downlink FACCH frame retransmission to obtain a fixed sequence number;

and the BSC calculates an interference source air interface frame according to the fixed time sequence serial number to obtain the target time sequence serial number.

6. The power control method according to claim 4 or 5, wherein when the target frame is the downlink FACCH frame, the method further comprises:

if the serving cell actively sends the downlink FACCH frame to a Mobile Station (MS), when the serving cell receives a response frame of the MS, the BSC sends a power control stop command to the interference source cell, wherein the power control stop command is used for instructing the interference source cell to stop performing power control on a downlink air interface frame corresponding to the target timing sequence number; or the like, or, alternatively,

if the MS actively sends an uplink FACCH frame to the serving cell, the BSC sends the power control stop command to the interference source cell when the serving cell receives different uplink FACCH frames; or the like, or, alternatively,

7. The power control method according to any one of claims 1 to 5, characterized in that the method further comprises:

and when the downlink receiving quality of the service cell is greater than or equal to the preset threshold, the BSC sends the power control stop command to the interference source cell.

8. A method of power control, comprising:

when an interference source cell receives a power control starting command sent by a Base Station Controller (BSC), the interference source cell determines a target time sequence number according to the power control starting command, wherein the target time sequence number is a time sequence number in the interference source cell corresponding to the condition that the downlink receiving quality of a service cell is lower than a preset threshold;

and the interference source cell performs power control on the downlink air interface frame corresponding to the target time sequence number so as to reduce the interference of the interference source cell on the serving cell.

9. The power control method according to claim 8, wherein the performing, by the aggressor cell, power control on the downlink air interface frame corresponding to the target timing sequence number includes:

and the interference source cell controls the transmitting power of the downlink air interface frame corresponding to the target time sequence number according to a preset power control method.

10. The power control method according to claim 8 or 9, characterized in that the method further comprises:

11. A base station controller, BSC, comprising:

the identification unit is used for identifying the adjacent cell of the service cell to obtain an interference source cell which interferes with the service cell;

a first determining unit, configured to determine a target timing sequence number according to target frames of different frame types in the serving cell if the downlink reception quality of the serving cell is less than a preset threshold, where the target timing sequence number is a timing sequence number in the interference source cell corresponding to that the downlink reception quality of the serving cell is lower than the preset threshold due to co-channel interference;

a first sending unit, configured to send a power control start command to the aggressor cell, where the power control start command is used to instruct the aggressor cell to perform power control on a downlink air interface frame corresponding to the target timing sequence number, and the power control start command carries information of the target timing sequence number, so that the BSC controls the aggressor cell to reduce interference on the serving cell.

12. The BSC of claim 11, wherein the target frame comprises a downlink speech frame, a downlink Slow Associated Control Channel (SACCH) frame, or a downlink Fast Associated Control Channel (FACCH) frame.

13. The BSC of claim 12, wherein when the target frame is the downlink speech frame or the downlink SACCH frame, the first determining unit comprises:

and the first calculation word unit is used for calculating an interference source air interface frame of the downlink speech frame or the downlink SACCH frame to obtain the target time sequence number.

14. The BSC of claim 12, wherein when the target frame is the downlink FACCH frame, the BSC further comprises:

and a second determining unit, configured to determine the target timing sequence number according to the downlink FACCH frame if the retransmission times of the downlink FACCH frame are greater than or equal to a preset number.

15. The BSC of claim 14, wherein the second determining unit comprises:

a timing sequence fixing subunit, configured to fix a timing sequence number of the downlink FACCH frame retransmission to obtain a fixed timing sequence number;

and the second calculating subunit is configured to calculate an air interface frame of the interference source according to the fixed time sequence number to obtain the target time sequence number.

16. The BSC of claim 14 or 15, wherein the BSC further comprises:

a second sending unit, configured to send, if the serving cell actively sends the downlink FACCH frame to a mobile station MS, a power control stop command to the interference source cell when the serving cell receives a response frame of the MS, where the power control stop command is used to instruct the interference source cell to stop performing power control on a downlink air interface frame corresponding to the target timing sequence number; or the like, or, alternatively,

a third sending unit, configured to send the power control stop command to the interference source cell when the serving cell receives different uplink FACCH frames if the MS actively sends the uplink FACCH frame to the serving cell; or the like, or, alternatively,

a fourth sending unit, configured to send the power control stop command to the interference source cell if the channel corresponding to the downlink FACCH frame is released.

17. The BSC of any of claims 11-15, wherein the BSC further comprises:

a fifth sending unit, configured to send the power control stop command to the interference source cell when the downlink reception quality of the serving cell is greater than or equal to the preset threshold.

18. An interferer cell, comprising:

a determining unit, configured to determine a target timing sequence number according to a power control start command sent by a base station controller BSC when the interference source cell receives the power control start command, where the target timing sequence number is a timing sequence number in the interference source cell corresponding to a condition that downlink reception quality of a serving cell is lower than a preset threshold due to interference;

and the first power control unit is configured to perform power control on the downlink air interface frame corresponding to the target timing sequence number, so as to reduce interference of the interference source cell on the serving cell.

19. The aggressor cell of claim 18, wherein the first power control unit comprises:

and the power control subunit is used for controlling the transmitting power of the downlink air interface frame corresponding to the target time sequence number according to a preset power control method.

20. The aggressor cell of claim 18 or 19, wherein the aggressor cell further comprises:

and the second power control unit is configured to stop performing power control on the downlink air interface frame corresponding to the target timing sequence number when the interference source cell receives a power control stop command sent by the BSC.

21. A base station controller, BSC, comprising:

a receiver, a transmitter, a memory, a bus, and a processor;

the bus is used for connecting the receiver, the transmitter, the memory and the processor;

the memory is used for storing operation instructions;

the processor is configured to perform the operations in claims 1 to 7 by calling the operation instruction.

22. An interferer cell, comprising:

a receiver, a transmitter, a memory, a bus, and a processor;

the memory is used for storing operation instructions;

the processor is configured to execute the operations in claims 8 to 10 by calling the operation instruction.