CN113727356B

CN113727356B - Method and device for reducing communication interference

Info

Publication number: CN113727356B
Application number: CN202110989938.0A
Authority: CN
Inventors: 张琳; 裴郁杉
Original assignee: China United Network Communications Group Co Ltd
Current assignee: China United Network Communications Group Co Ltd
Priority date: 2021-08-26
Filing date: 2021-08-26
Publication date: 2023-11-21
Anticipated expiration: 2041-08-26
Also published as: CN113727356A

Abstract

The application provides a method and a device for reducing communication interference, relates to the technical field of communication, and is used for solving the technical problem of communication interference between a service base station and an interference base station. The method is applied to a serving base station belonging to a communication system comprising the serving base station, an interfering base station and a terminal, and comprises the following steps: the service base station firstly obtains information transmission time delay between the service base station and the terminal and information transmission time delay between the service base station and the interference base station respectively, and scheduling time of scheduling resources on a target almost blank subframe by the interference base station, and then determines target time for scheduling resources by the terminal according to time delay difference of the information transmission time delay between the service base station and the interference base station respectively and the terminal and the scheduling time, and schedules the resources by the terminal at the target time. The application reduces the communication interference between the service base station and the interference base station.

Description

Method and device for reducing communication interference

Technical Field

The present application relates to the field of communications technologies, and in particular, to a method and an apparatus for reducing communication interference.

Background

At present, a macro-micro cooperative hierarchical networking mode is used for improving network capacity and user rate in a communication system. The macro-micro cooperative hierarchical networking mode comprises a macro base station and a micro base station. The macro base station providing coverage of the wide area base layer; and the micro base station is used to provide indoor deep coverage, blind spot coverage, hot spot coverage, etc.

However, when the macro base station and the micro base station adopt the communication mode of the same-frequency networking, communication interference necessarily exists between the macro base station and the micro base station. To avoid communication interference, the prior art generally uses almost blank subframes (almost blank subframe, ABS) of macro base stations reaching users and normal subframes of micro base stations reaching users to overlap in time on the user side for the purpose of reducing interference.

However, when the macro base station is deployed at a position far from the position of the terminal (e.g., the macro base station is deployed in the air), the time delay for the macro base station to reach the ABS subframe of the user is long. In this case, in the prior art, it cannot be guaranteed that an ABS subframe of a macro base station reaching a user and a normal subframe of a micro base station reaching the user overlap in time at the user side, and thus communication interference between the macro base station and the micro base station cannot be reduced.

Disclosure of Invention

The application provides a method and a device for reducing communication interference, which are used for reducing communication interference between a macro base station and a micro base station.

In order to achieve the above purpose, the application adopts the following technical scheme:

in a first aspect, a method for reducing communication interference is provided, including: the service base station firstly obtains information transmission time delay between the service base station and the terminal and information transmission time delay between the service base station and the interference base station respectively, and scheduling time of scheduling resources on a target almost blank subframe by the interference base station, and then determines target time for scheduling resources by the terminal according to time delay difference of the information transmission time delay between the service base station and the interference base station respectively and the terminal and the scheduling time, and schedules the resources by the terminal at the target time.

Optionally, the method for obtaining the second time delay specifically includes: a sending time and a receiving time sent by a receiving terminal; the sending time is the sending time of the data transmission message sent by the interference base station to the terminal; the receiving time is the receiving time of the data transmission message sent by the terminal receiving interference base station; and determining the difference between the sending time and the receiving time as a second time delay.

Optionally, the method for obtaining the second time delay specifically includes: receiving a second time delay sent by the terminal; the second time delay is determined by the terminal according to the sending time and the receiving time; the sending time is the sending time of the data transmission message sent by the interference base station to the terminal; the receiving time is the receiving time of the data transmission message sent by the terminal receiving interference base station.

Optionally, the method for acquiring the scheduling time of the scheduling resource of the interfering base station on the target almost blank subframe specifically includes: and reading the corresponding relation between the pre-stored base station and the scheduling time to acquire the scheduling time of the scheduling resource of the interfering base station on the target almost blank subframe.

Optionally, when the interfering base station includes a plurality of almost blank subframes, the method for reducing communication interference further includes: acquiring the current scheduling time of scheduling resources on the current almost blank subframe by the interference base station; the current almost blank subframe is the first almost blank subframe of the interfering base station after the current moment; when the first time delay is larger than the second time delay and the time corresponding to the difference between the current scheduling time and the time delay difference is located before the current time, or when the first time delay is smaller than the second time delay and the time corresponding to the sum of the current scheduling time and the time delay difference is located before the current time, determining an nth almost blank subframe after the current almost blank subframe as a target almost blank subframe; wherein n is a natural number greater than zero; when the first time delay is larger than the second time delay, the time corresponding to the difference between the nth scheduling time and the time delay difference is positioned after the current time; or when the first time delay is smaller than the second time delay, the time corresponding to the sum of the nth scheduling time and the time delay difference is positioned after the current time; the nth scheduling time is the scheduling time of the interfering base station scheduling resources on the nth almost blank subframe.

Optionally, the method for determining the target time of the service base station for scheduling the resource for the terminal according to the time delay difference between the first time delay and the second time delay and the scheduling time specifically includes: when the first time delay is larger than the second time delay, determining the difference between the scheduling time and the time delay difference as a target time; and when the first time delay is smaller than the second time delay, determining the sum of the scheduling time and the time delay difference as the target time.

Optionally, the method for reducing communication interference further includes: and acquiring a base station with interference signal intensity greater than a preset threshold value for the terminal, and determining the acquired base station as an interference base station.

In a second aspect, an apparatus for reducing communication interference is provided, comprising: the device comprises an acquisition unit, a processing unit and a scheduling unit. The acquisition unit is used for acquiring the first time delay and the second time delay; the first time delay is information transmission time delay between the service base station and the terminal; the second time delay is information transmission time delay between the interference base station and the terminal; and the method is also used for acquiring the scheduling time of the scheduling resource of the interference base station on the target almost blank subframe. And the processing unit is used for determining the target time of the service base station for scheduling the resources for the terminal according to the time delay difference between the first time delay and the second time delay acquired by the acquisition unit and the scheduling time. And the scheduling unit is used for scheduling resources for the terminal at the target moment determined by the processing unit.

Optionally, the acquiring unit is specifically configured to: a sending time and a receiving time sent by a receiving terminal; the sending time is the sending time of the data transmission message sent by the interference base station to the terminal; the receiving time is the receiving time of the data transmission message sent by the terminal receiving interference base station; and determining the difference between the sending time and the receiving time as a second time delay.

Optionally, the acquiring unit is specifically configured to: receiving a second time delay sent by the terminal; the second time delay is determined by the terminal according to the sending time and the receiving time; the sending time is the sending time of the data transmission message sent by the interference base station to the terminal; the receiving time is the receiving time of the data transmission message sent by the terminal receiving interference base station.

Optionally, the acquiring unit is specifically configured to: and reading the pre-stored corresponding relation between the base station and the scheduling time to acquire the scheduling time of the scheduling resource of the interfering base station on the target almost blank subframe.

Optionally, the acquiring unit is further configured to acquire a current scheduling time of scheduling resources on a current almost blank subframe by the interfering base station; the current almost blank subframe is the first almost blank subframe of the interfering base station after the current moment; the processing unit is further configured to determine, as the target almost blank subframe, an nth almost blank subframe after the current almost blank subframe acquired by the acquisition unit when the first time delay is greater than the second time delay and a time corresponding to a difference between the current scheduling time and the time difference is located before the current time, or when the first time delay is less than the second time delay and a time corresponding to a sum of the current scheduling time and the time difference is located before the current time; wherein n is a natural number greater than zero; when the first time delay is larger than the second time delay, the time corresponding to the difference between the nth scheduling time and the time delay difference is positioned after the current time; or when the first time delay is smaller than the second time delay, the time corresponding to the sum of the nth scheduling time and the time delay difference is positioned after the current time; the nth scheduling time is the scheduling time of the interfering base station scheduling resources on the nth almost blank subframe.

Optionally, the processing unit is specifically configured to: when the first time delay is larger than the second time delay, determining the difference between the scheduling time and the time delay difference as a target time; and when the first time delay is smaller than the second time delay, determining the sum of the scheduling time and the time delay difference as the target time.

The optional acquisition unit is further used for acquiring a base station with interference signal strength to the terminal being greater than a preset threshold value; and the processing unit is also used for determining the base station acquired by the acquisition unit as an interference base station.

In a third aspect, an apparatus for reducing communication interference is provided, comprising a memory and a processor; the memory is used for storing computer execution instructions, and the processor is connected with the memory through a bus; when the communication interference reduction device is operated, the processor executes computer-executable instructions stored in the memory to cause the communication interference reduction device to perform the communication interference reduction method according to the first aspect.

The means for reducing communication interference may be a network device or may be a part of a device in a network device, such as a system-on-chip in a network device. The system-on-a-chip is configured to support the network device to implement the functions involved in the first aspect and any one of its possible implementations, e.g. to receive, determine, and offload data and/or information involved in the above-mentioned method of reducing communication interference. The chip system includes a chip, and may also include other discrete devices or circuit structures.

In a fourth aspect, there is provided a computer readable storage medium comprising computer executable instructions which, when run on a computer, cause the computer to perform the method of reducing communication interference of the first aspect and the first aspect.

It should be noted that the above-mentioned computer instructions may be stored in whole or in part on the first computer readable storage medium. The first computer readable storage medium may be packaged together with the processor of the apparatus for reducing communication interference, or may be packaged separately from the processor of the apparatus for reducing communication interference, which is not limited in the present application.

In the present application, the names of the above-described means for reducing communication interference do not constitute limitations on the devices or functional modules themselves, and in actual implementation, these devices or functional modules may appear under other names. Insofar as the function of each device or function module is similar to that of the present application, it falls within the scope of the claims of the present application and the equivalents thereof.

These and other aspects of the application will be more readily apparent from the following description.

The technical scheme provided by the application has at least the following beneficial effects:

Based on any one of the above aspects, in the present application, the serving base station may determine the target time when the serving base station schedules resources for the terminal by calculating information transmission delays between the serving base station and the interfering base station to the terminal, respectively, and then combining the scheduling time when the interfering base station schedules resources on the target almost blank subframe. In this way, the serving base station can adjust the target time of the terminal scheduling resource according to the time delay difference of the information transmission time delay between the serving base station and the terminal and the interference base station, so as to ensure that the time of the ABS in the interference base station reaching the terminal overlaps with the time of the normal subframe in the serving base station reaching the terminal. Because the power of the scheduling resource of the interference base station on the almost blank subframe is smaller, the communication interference between the interference base station and the service base station can be effectively reduced, and the communication efficiency is improved.

Drawings

Fig. 1 is a schematic structural diagram of a communication system according to an embodiment of the present application;

fig. 2A is a schematic hardware structure of a communication device according to an embodiment of the present application;

fig. 2B is a schematic diagram of another hardware structure of the communication device according to the embodiment of the present application;

fig. 3 is a flowchart illustrating a method for reducing communication interference according to an embodiment of the present application;

Fig. 4 is a second flowchart of a method for reducing communication interference according to an embodiment of the present application;

fig. 5 is a flowchart illustrating a method for reducing communication interference according to an embodiment of the present application;

fig. 6 is a flowchart illustrating a method for reducing communication interference according to an embodiment of the present application;

fig. 7 is a flowchart of a method for reducing communication interference according to an embodiment of the present application;

fig. 8 is a flowchart illustrating a method for reducing communication interference according to an embodiment of the present application;

fig. 9 is a schematic flow chart of an apparatus for reducing communication interference according to an embodiment of the present application;

Detailed Description

The following description of the embodiments of the present application will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present application, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.

It should be noted that, in the embodiments of the present application, words such as "exemplary" or "such as" are used to mean serving as an example, instance, or illustration. Any embodiment or design described herein as "exemplary" or "e.g." in an embodiment should not be taken as preferred or advantageous over other embodiments or designs. Rather, the use of words such as "exemplary" or "such as" is intended to present related concepts in a concrete fashion.

In order to clearly describe the technical solution of the embodiment of the present application, in the embodiment of the present application, the words "first", "second", etc. are used to distinguish identical items or similar items having substantially the same function and effect, and those skilled in the art will understand that the words "first", "second", etc. are not limited in number and execution order.

At present, a macro-micro cooperative layered networking mode is used for improving network capacity and terminal speed in a communication system. The macro-micro cooperative hierarchical networking mode comprises a macro base station and a micro base station. The macro base station providing coverage of the wide area base layer; and the micro base station is used to provide indoor deep coverage, blind spot coverage, hot spot coverage, etc.

However, when the macro base station and the micro base station adopt the communication mode of the same-frequency networking, the coverage area of the macro base station is wide, the transmitting power is high, and the signals of the micro base station calling resources are received by the terminals at the coverage edge of the micro base station poorly, which is necessarily interfered by the macro base station. To circumvent such communication interference, the fourth generation mobile communication technology (the 4th generation communication system,4G) based wireless communication system standard (long term evolution-Advanced, LTE-Advanced) introduced enhanced inter-cell interference coordination (enhanced inter cell interference coordination, eICIC) techniques. In the eICIC technology, a macro base station may be configured with a certain number of ABS, where the transmission power is lower than the power of the micro base station coverage edge signal transmission. Meanwhile, at the position corresponding to the subframe where the macro base station ABS is located, the subframe of the micro base station contains useful signals and transmits at normal power.

In the eICIC technology, macro and micro base stations keep synchronous transmission, and the transmission distances between different base stations and a terminal are generally not more than a few kilometers, and the time delay difference is generally less than 0.1ms. And the configuration granularity of the ABS is a subframe, and the subframe length of LTE in 4G is 1ms. Thus, the difference of transmission delay of different base station signals reaching the terminal in the eICIC technology is far smaller than the ABS length. In this case, the eICIC can enable the ABS of the reduced power transmission of the macro base station to the terminal and the normal subframes of the micro base station to the terminal to overlap substantially in the time the terminal receives, so as to achieve the purpose of reducing interference.

As the network evolves toward the air-ground convergence, the number of macro base stations deployed in the air (air base stations for short) is increasing, and the air base stations and micro base stations deployed on the ground (ground base stations for short) form a large heterogeneous network. While the air base station (typically at an air location of 20000-50000 meters from the ground) is typically located farther from the terminal and is transmitted farther. In order to reduce energy consumption, the air base station and the ground base station adopt the same-frequency networking mode. At this time, the information transmission delay between the air base station and the terminal is long.

In addition, the scheduling granularity of the fifth generation mobile communication technology (5th generation mobile communication technology,5G) becomes a symbol or slot (slot). Therefore, the prior art cannot ensure that the ABS of the air base station reaching the terminal and the normal subframe of the ground base station reaching the terminal overlap in time at the terminal side, and further cannot reduce communication interference between the air base station and the ground base station. Therefore, how to avoid communication interference between the air base station and the ground base station is a problem to be solved.

In view of the above problems, the embodiments of the present application provide a method for reducing communication interference, where a serving base station may determine a target time when the serving base station schedules resources for a terminal by calculating information transmission delays between the serving base station and the interfering base station, respectively, to the terminal, and then combining scheduling times when the interfering base station schedules resources on a target almost blank subframe. In this way, the serving base station can adjust the target time of the terminal scheduling resource according to the time delay difference of the information transmission time delay between the serving base station and the terminal and the interference base station, so as to ensure that the time of the ABS in the interference base station reaching the terminal overlaps with the time of the normal subframe in the serving base station reaching the terminal. Because the power of the scheduling resource of the interference base station on the almost blank subframe is smaller, the communication interference between the interference base station and the service base station can be effectively reduced, and the communication efficiency is improved.

In one implementation, the serving base station and the interfering base station in the embodiment of the present application may be an air base station and a ground base station, respectively. When the serving base station is an air base station, the interfering base station is a ground base station. Correspondingly, when the serving base station is a ground base station, the interfering base station is an air base station.

The method for reducing communication interference is suitable for a communication system. Fig. 1 shows one configuration of the communication system 100. As shown in fig. 1, the communication system 100 includes: a terminal 101, a serving base station 102 and an interfering base station 103. Terminal 101 may be in communication connection with serving base station 102 and interfering base station 103, respectively.

In one implementation, as shown in fig. 1, serving base station 102 is an air base station and interfering base station 103 is a ground base station.

Alternatively, in practical applications, the serving base station 102 may be a ground base station as shown in fig. 1, and the interfering base station may be an air base station as shown in fig. 1. The embodiment of the present application is described by taking the serving base station shown in fig. 1 as an air base station and the interfering base station as a ground base station as an example.

Alternatively, in practical application, the terminal may be in communication connection with multiple interfering base stations, or multiple terminals may be in communication connection with one serving base station. Fig. 1 illustrates an example of one terminal, one serving base station, and one interfering base station.

Alternatively, the terminal 101 in fig. 1 may be a device that provides voice and/or data connectivity to a user, a handheld device with wireless connectivity, or other processing device connected to a wireless modem. The wireless terminal may communicate with one or more core networks via a radio access network (radio access network, RAN). The wireless terminals may be mobile terminals such as mobile telephones (or "cellular" telephones) and computers with mobile terminals, as well as portable, pocket, hand-held, computer-built-in or car-mounted mobile devices which exchange voice and/or data with radio access networks, e.g. cell phones, tablet computers, notebook computers, netbooks, personal digital assistants (personal digital assistant, PDA).

Alternatively, the serving base station 102 and the ground base station 103 in fig. 1 may be base stations or base station controllers for wireless communication, or the like. In the embodiment of the present application, the base station may be a base station (base transceiver station, BTS) in a global system for mobile communications (global system for mobile communication, GSM), a base station (base transceiver station, BTS) in a code division multiple access (code division multiple access, CDMA), a base station (node B) in a wideband code division multiple access (wideband code division multiple access, WCDMA), a base station (eNB) in an internet of things (internet of things, ioT) or a narrowband internet of things (NB-IoT), a base station in a future 5G mobile communication network or a future evolved public land mobile network (public land mobile network, PLMN), which is not limited in this embodiment of the present application.

The basic hardware architecture of the terminal 101, serving base station 102, and interfering base station 103 in the communication system 100 is similar and includes elements included in the communication apparatus shown in fig. 2A or fig. 2B. The hardware configuration of the terminal 101, the serving base station 102, and the interfering base station 103 will be described below taking the communication apparatus shown in fig. 2A and 2B as an example.

Fig. 2A is a schematic diagram of a hardware structure of a communication device according to an embodiment of the present application. The communication device comprises a processor 21, a memory 22, a communication interface 23, a bus 24. The processor 21, the memory 22 and the communication interface 23 may be connected by a bus 24.

The processor 21 is a control center of the communication device, and may be one processor or a collective term of a plurality of processing elements. For example, the processor 21 may be a general-purpose central processing unit (central processing unit, CPU), or may be another general-purpose processor. Wherein the general purpose processor may be a microprocessor or any conventional processor or the like.

As one example, processor 21 may include one or more CPUs, such as CPU0 and CPU1 shown in fig. 2A.

Memory 22 may be, but is not limited to, a read-only memory (ROM) or other type of static storage device that can store static information and instructions, a random access memory (random accessme mory, RAM) or other type of dynamic storage device that can store information and instructions, or an electrically erasable programmable read-only memory (EEPROM), magnetic disk storage or other magnetic storage device, or any other medium that can be used to carry or store desired program code in the form of instructions or data structures and that can be accessed by a computer.

In a possible implementation, the memory 22 may exist separately from the processor 21, and the memory 22 may be connected to the processor 21 by a bus 24 for storing instructions or program code. The processor 21, when calling and executing instructions or program code stored in the memory 22, is capable of implementing the method for reducing communication interference provided by the embodiments of the present application described below.

In the embodiment of the present application, the software programs stored in the memory 22 are different for the terminal 101, the air base station 102 and the interfering base station 103, so that the functions implemented by the terminal 101, the air base station 102 and the interfering base station 103 are different. The functions performed with respect to the respective devices will be described in connection with the following flowcharts.

In another possible implementation, the memory 22 may also be integrated with the processor 21.

A communication interface 23 for connecting the communication device with other devices via a communication network, which may be an ethernet, a radio access network, a wireless local area network (wireless local area networks, WLAN) or the like. The communication interface 23 may include a receiving unit for receiving data and a scheduling unit for transmitting data.

Bus 24 may be an industry standard architecture (industry standard architecture, ISA) bus, an external device interconnect (peripheral component interconnect, PCI) bus, or an extended industry standard architecture (extended industry standard architecture, EISA) bus, among others. The bus may be classified as an address bus, a data bus, a control bus, etc. For ease of illustration, only one thick line is shown in FIG. 2A, but not only one bus or one type of bus.

It should be noted that the structure shown in fig. 2A does not constitute a limitation of the communication device, and the communication device may include more or less components than those shown in fig. 2A, or may combine some components, or may be arranged in different components.

Fig. 2B shows another hardware configuration of the communication apparatus in the embodiment of the present application. As shown in fig. 2B, the communication device may include a processor 31 and a communication interface 32. The processor 31 is coupled to a communication interface 32.

The function of the processor 31 may be as described above with reference to the processor 21. The processor 31 also has a memory function and can function as the memory 22.

The communication interface 32 is used to provide data to the processor 31. The communication interface 32 may be an internal interface of the communication device or an external interface of the communication device (corresponding to the communication interface 23).

It should be noted that the structure shown in fig. 2A (or fig. 2B) does not constitute a limitation of the communication apparatus, and the communication apparatus may include more or less components than those shown in fig. 2A (or fig. 2B), or may combine some components, or may be arranged in different components.

Fig. 3 is a schematic flow chart of a method for reducing communication interference according to an embodiment of the present application. The embodiment of the application is applied to the communication system shown in fig. 1, and the method for reducing communication interference is applied to the communication system consisting of a terminal, a service base station and an interference base station, and comprises the following steps: S301-S306.

S301, the service base station acquires a first time delay.

The first time delay is information transmission time delay between the service base station and the terminal.

Alternatively, the first delay may be a unidirectional transmission delay between the serving base station and the terminal. The transmission data form of the unidirectional transmission delay can be streaming media data.

The streaming media data may be at least one of text data or picture data, or may be in other transmission data forms, which is not limited in the embodiment of the present application.

Optionally, the serving base station may calculate the unidirectional transmission delay between the serving base station and the terminal according to the transmission duration of the uplink data of the terminal.

Specifically, the uplink transmission data of the terminal may include a transmission timestamp of the uplink transmission data sent by the terminal, and the serving base station determines the reception timestamp when receiving the uplink transmission data. Subsequently, the service base station determines a first time delay through a difference between a time stamp of the terminal sending the uplink transmission data and a time stamp of the server receiving the uplink transmission data.

For example, the terminal sends uplink transmission data to the serving base station at time 11:05, determines 11:05 as a sending timestamp and sends the uplink transmission data simultaneously. The service base station receives the uplink transmission data at the time 11:06, and determines 11:06 as a receiving time stamp. The service base station subtracts the sending time stamp 11:05 from the receiving time stamp 11:06 to obtain the information transmission time delay between the service base station and the terminal as 1min, and the information transmission time delay is determined to be the first time delay.

Alternatively, the serving base station may calculate the information transmission delay between the serving base station and the terminal according to the transmission duration of the downlink transmission data sent to the terminal.

Specifically, when transmitting downlink transmission data to a terminal, the serving base station adds a transmission time stamp for transmitting the downlink transmission data to the downlink transmission data. When receiving the downlink transmission data, the terminal records a receiving time stamp of the received downlink transmission data. And then, the terminal determines a first time delay according to the difference between the sending time stamp of the downlink transmission data sent by the service base station and the receiving time stamp of the received downlink transmission data in the downlink transmission data, and sends the first time delay to the service base station. Correspondingly, the service base station receives the first time delay sent by the base station.

For example, the serving base station sends downlink transmission data to the terminal at a time 11:15, determines 11:15 as a sending timestamp and sends the downlink transmission data simultaneously. The terminal receives the downlink transmission data at the time 11:16, and determines 11:16 as a receiving time stamp. The terminal subtracts the sending time stamp 11:15 from the receiving time stamp 11:16 to obtain the information transmission time delay between the service base station and the terminal as 1min, determines the information transmission time delay as the first time delay, and sends the first time delay to the service base station. Correspondingly, the service base station receives the first time delay sent by the terminal.

Optionally, the first delay may further include terminal information. The terminal information includes: identity information of the terminal, location information of the terminal, etc.

Optionally, the terminal may establish network connection with the serving base station through any network system. Such as: 5G network system or 4G network system, etc.

S302, a service base station acquires a base station with interference signal intensity greater than a preset threshold value for the terminal, and determines the acquired base station as the interference base station.

Optionally, when the terminal communicates with the serving base station, the serving base station may periodically measure the communication quality between the terminal and the serving base station, and if the communication quality is lower than a communication quality threshold, send a measurement information control instruction to the terminal. And the terminal receives the measurement information control instruction and uploads the interference intensity information table of all the adjacent base stations to the terminal, wherein the interference intensity information table is obtained through measurement. And the service base station determines the base station with the interference signal intensity greater than a preset threshold value as an interference base station according to the acquired interference intensity information table.

Wherein the neighboring base stations include base stations whose communication areas cover the terminal except the serving base station.

Optionally, the base station information in the interference intensity information table corresponds to the interference intensity one by one.

Optionally, the terminal may adjust the communication quality threshold and/or the preset threshold according to the requirement for communication quality, which is not limited in the embodiment of the present application.

Optionally, when the interference intensity of each base station in the interference intensity information table acquired by the serving base station is smaller than a preset threshold, determining the base station with the maximum interference signal intensity as the interference base station.

Alternatively, when the terminal communicates with the serving base station, the terminal measures the interference intensity of all the neighboring base stations to the terminal, and if the base station with the interference intensity greater than the preset threshold is found, the information of the base station is determined and uploaded to the serving base station. Subsequently, the service base station receives the base station information uploaded by the terminal and determines the base station information as an interference base station.

Optionally, the information of the base station may include an identifier, a code, and the like of the base station, which is not limited in the embodiment of the present application.

For example, when the terminal 1 is located at the coverage edge of the serving base station, the communication quality between the terminal 1 and the serving base station may be degraded. At the same time, the neighboring base station may invoke another terminal 2 in the same frequency domain, and if its transmission power is large, interference may be caused to communications between the terminal 1 and the serving base station. At this time, the terminal measures the interference intensity of the base station to the terminal, and if the interference intensity is greater than a preset threshold value, the information of the base station is identified and uploaded to the service base station. Subsequently, the service base station receives the base station information uploaded by the terminal and determines the base station information as an interference base station.

Optionally, after receiving the information of the interfering base station, the serving base station may identify and match the schedule and/or the one-way transmission delay table corresponding to the information, and ABS configuration information.

The embodiment of the application is not limited to the sequence of S301 and S302. The serving base station may perform S301 first and then S302; s302 may be performed first, and S301 may be performed later; s301 and S302 may also be performed simultaneously.

S303, the service base station acquires the second time delay.

The second time delay is information transmission time delay between the interference base station and the terminal.

Alternatively, the second delay may be a unidirectional transmission delay between the interfering base station and the terminal. The transmission data form of the unidirectional transmission delay can be streaming media data.

Optionally, after receiving the measurement control information sent by the serving base station, the terminal uploads the generated schedule or unidirectional transmission delay table to the serving base station.

Or,

optionally, when uploading base station information that the interference intensity measured by the terminal is greater than a preset threshold value to the service base station, the terminal simultaneously uploads the generated schedule or the unidirectional transmission delay table to the service base station.

Optionally, the service base station receives the schedule or the unidirectional transmission delay table uploaded by the terminal, acquires information corresponding to the interfering base station in the schedule or the unidirectional transmission delay table, and determines the second delay.

Specifically, when the service base station receives the timetable uploaded by the terminal, the service base station obtains the sending time and the receiving time which are recorded by the terminal and correspond to the interference base station, and determines the second time delay through the difference between the sending time and the receiving time. Or when the service base station receives the unidirectional transmission delay table uploaded by the terminal, acquiring the unidirectional transmission delay corresponding to the interference base station recorded by the terminal and determining the unidirectional transmission delay as the second delay. Optionally, the second delay may further include information interfering with the base station. The information of the interfering base station includes: identity information of the interfering base station, location information of the interfering base station, etc.

Optionally, the terminal may establish network connection with the interfering base station through any network system. Such as: 5G network system or 4G network system, etc.

S304, the service base station obtains the scheduling time of the scheduling resource of the interference base station on the target ABS.

The ABS is preconfigured by the air base station and the ground base station, the air base stations are all stored with ABS configuration information of the ground base station, and the ground base stations are also all stored with ABS configuration information of the air base station.

Specifically, the service base station obtains the scheduling time of the target ABS according to the stored ABS configuration information of the interference base station.

Optionally, the ABS configuration information may include a scheduling time, a length, a location, etc. of the ABS, which is not limited in the embodiment of the present application.

Alternatively, reference signals, synchronization signals, etc. may be included in the ABS and the base station preferably does not schedule terminals on the ABS.

S305, the service base station determines the target time for scheduling the resource for the terminal according to the time delay difference between the first time delay and the second time delay and the scheduling time of the target ABS.

Wherein the delay difference is the delay difference of information transmission delay between the serving base station and the interfering base station to the terminal respectively

Alternatively, the delay difference may be a delay difference of unidirectional transmission delays between the serving base station and the interfering base station to the terminal, respectively.

Specifically, the serving base station subtracts the second delay from the first delay to obtain a difference value, and determines the absolute value of the difference value as a delay difference

For example, when the first time delay is preset to be 1min and the second time delay is preset to be 3min, the first time delay is |1-3|=2min, and the instant time delay difference is 2min.

Further, the service base station calculates the target time for scheduling the resource for the terminal according to the delay difference and the scheduling time of the target ABS.

Specifically, the serving base station takes the time obtained by adding the delay difference to the scheduling time of the target ABS as the target time, or takes the time obtained by subtracting the delay difference from the scheduling time of the target ABS as the target time.

S306, the service base station schedules resources for the terminal at the target moment.

For example, the preset current time is 12:00, the serving base station is a ground base station, the first time delay (i.e., the time delay from the ground base station to the terminal) is 1min, the interfering base station is an air base station, the second time delay (i.e., the time delay from the air base station to the terminal) is 2min, and the scheduling time of the target ABS of the interfering base station is 12:04. In the prior art, an air base station and a ground base station synchronously transmit at the scheduling moment of ABS, namely, the air base station and the ground base station are scheduled at 12:04. Therefore, the normal subframe of the ground base station arrives at the terminal at the time 12:05, while the ABS of the air base station arrives at the terminal at the time 12:06, and cannot arrive at the terminal at the same time. In this case, the ground base station may be interfered by the air base station when the ground base station communicates with the terminal as a serving base station. In the application, the target time is determined to be 12:05, namely, the ground base station is scheduled at the time 12:05, and reaches the terminal at the time 12:06. The air base station schedules ABS at time 12:04 and reaches the terminal at 12:06. In this way, the normal subframe of the ground base station overlaps with the moment when the ABS of the air base station reaches the terminal, so that the communication interference between the interference base station and the service base station can be effectively reduced, and the communication efficiency is improved.

In summary, the serving base station in the embodiment of the application firstly obtains the information transmission time delay between the serving base station and the terminal respectively from the interfering base station and the scheduling time of the scheduling resource of the interfering base station on the target ABS, and then determines the target time for scheduling the resource of the terminal according to the time delay difference of the unidirectional information transmission time delay between the serving base station and the terminal respectively from the interfering base station and the scheduling time, and the target time is the terminal scheduling resource. Therefore, in the heterogeneous network formed by the air base station and the ground base station in the same-frequency networking mode, the application ensures that the moment when the ABS in the interference base station reaches the terminal and the moment when the normal subframe in the service base station reaches the user overlap at the terminal, and can effectively reduce the communication interference between the service base station and the interference base station.

In an implementation manner, as shown in fig. 4 in connection with fig. 3, in S303, a method for the serving base station to obtain the second delay may include: S401-S402.

S401, a service base station receives a sending time and a receiving time sent by a terminal.

The sending time is the sending time when the interference base station sends the data transmission message to the terminal; the receiving time is the receiving time of the data transmission message sent by the terminal receiving interference base station.

Optionally, the data transmission message may be a synchronization message, or may be a type of information that may be received by a terminal sent by another neighboring base station, which is not limited in the embodiment of the present application.

In practical applications, each base station in the network periodically transmits synchronization information to each mobile terminal via a downlink, so as to ensure synchronization in the frequency domain and/or the time domain.

Optionally, the air base station and the ground base station broadcast the transmission time of the synchronization information while broadcasting the synchronization information to all terminals in the coverage area. And the terminal receives the sending time of the synchronous information broadcasted by all the adjacent base stations and records the receiving time of the synchronous information. The terminal generates and maintains a schedule containing the transmission time and the reception time of all the neighbor base station synchronization information.

Optionally, the base station information in the schedule corresponds to a transmission time and a reception time.

Optionally, when receiving measurement control information issued by the serving base station or finding that a base station with interference intensity greater than a preset threshold exists, the terminal uploads a schedule to the serving base station.

Optionally, the service base station receives the schedule uploaded by the terminal, and matches the sending time of the synchronization information corresponding to the interference base station and the receiving time of the terminal in the schedule according to the information of the interference base station.

Alternatively, the terminal may measure and update the schedule periodically, or according to the instruction of the serving base station, which is not limited in the embodiment of the present application.

S402, the service base station determines the difference between the sending time and the receiving time as a second time delay.

For example, the preset interfering base station B broadcasts synchronization information and a transmission time 14:05 at a time 14:05, and the terminal receives the synchronization information and the transmission time at a time 14:08 and determines that the reception time is 14:08. Meanwhile, the terminal records the two moments corresponding to the information of the interfering base station in a time table. When the terminal receives measurement control information issued by the service base station or the terminal finds that a base station with interference intensity larger than a preset threshold exists, the terminal uploads a measurement report message containing a timetable to the service base station. After receiving the measurement report message, the serving base station may extract a schedule from the measurement report message, match the information of the known interfering base station B to the sending time 14:05 and the receiving time 14:08, and determine a time difference obtained by subtracting the sending time 14:05 from the receiving time 14:08 in the extracted schedule for 3min as the second time delay.

In an implementation manner, as shown in fig. 5 in connection with fig. 3, in S303, the method for obtaining the second delay by the serving base station may further include: s501.

S501, the service base station receives a second time delay sent by the terminal.

The service base station receives the information transmission delay table uploaded by the terminal and acquires the information transmission delay between the interference base station and the terminal.

Alternatively, the information transmission delay table may be a unidirectional transmission delay table. The service base station can obtain the unidirectional transmission delay between the interfering base station and the terminal according to the unidirectional transmission delay table.

Optionally, the air base station and the ground base station broadcast the transmission time of the synchronization information while broadcasting the synchronization information to all terminals in the coverage area. And the terminal receives the sending time of the synchronous information broadcasted by all the adjacent base stations and records the receiving time of the synchronous information. Subsequently, the terminal takes the difference value obtained by subtracting the sending time from the receiving time as the information transmission time delay, and generates and maintains an information transmission time delay table containing the information transmission time delays from all adjacent base stations to the terminal.

Optionally, when receiving measurement control information issued by the serving base station or finding that a base station with interference intensity greater than a preset threshold exists, the terminal uploads an information transmission delay table to the serving base station.

Optionally, the base station information in the information transmission delay table corresponds to the information transmission delay one by one.

Specifically, the service base station receives the information transmission delay table uploaded by the terminal, matches the information transmission delay corresponding to the interference base station according to the information of the known interference base station, and determines the information transmission delay as the second delay.

The service base station is illustratively matched with the information transmission delay between the interference base station and the terminal to be 3min according to the information of the interference base station, and determines the information transmission delay as the second delay.

In an implementation manner, referring to fig. 3, as shown in fig. 6, in S304, a method for a serving base station to obtain a scheduling time of a scheduling resource of an interfering base station on a target ABS specifically includes: s601.

S601, a service base station reads a corresponding relation between a pre-stored base station and scheduling time to acquire scheduling time of scheduling resources of an interference base station on a target almost blank subframe.

Specifically, the serving base station matches the corresponding ABS configuration information in the stored ABS configuration information of the base station according to the determined information of the interfering base station.

Further, the service base station obtains the scheduling time of the target ABS scheduling resource according to the ABS and the scheduling time corresponding to the ABS after the current time of the interference base station.

In one implementation manner, in conjunction with fig. 3, as shown in fig. 7, before step S304, when the interfering base station includes a plurality of almost blank subframes, the method for reducing communication interference further includes: S701-S702.

S701, a service base station obtains the current scheduling time of scheduling resources on the current almost blank subframe by an interference base station.

The current almost blank subframe is the first ABS of the interfering base station after the current moment, and the current scheduling moment is the scheduling moment corresponding to the first ABS of the interfering base station after the current moment.

For example, the current time is 17:00, the interfering base station configures a first ABS at time 17:05, a second ABS at time 17:10, and no ABS between 17:00 and 17:05. The first ABS is the current ABS and 17:05 is the current scheduling instant corresponding to the current ABS.

S702, when the first condition is satisfied, the serving base station determines an nth almost blank subframe after the current almost blank subframe as a target almost blank subframe.

Alternatively, the first condition may be when the first time delay is greater than the second time delay and a time corresponding to a difference between the current scheduling time and the time delay difference is located before the current time, or when the first time delay is less than the second time delay and a time corresponding to a sum of the current scheduling time and the time delay difference is located before the current time.

Wherein n is a natural number greater than zero; when the first time delay is larger than the second time delay, the time corresponding to the difference between the nth scheduling time and the time delay difference is positioned after the current time; or when the first time delay is smaller than the second time delay, the time corresponding to the sum of the nth scheduling time and the time delay difference is positioned after the current time; the nth scheduling time is the scheduling time of the interfering base station scheduling resources on the nth almost blank subframe.

It can be appreciated that if the ABS satisfies the second condition, the ABS may be the target ABS, and the scheduling time of the ABS is the scheduling time of the target ABS. The second condition is that when the first time delay is larger than the second time delay, the time corresponding to the difference between the scheduling time of the ABS and the time delay difference is positioned after the current time; or when the first time delay is smaller than the second time delay, the time corresponding to the sum of the scheduling time and the time delay difference of the ABS is positioned after the current time. The ABS satisfying the second condition is not unique, and there may be n ABS satisfying the second condition at the same time. The target ABS may be the first ABS satisfying the second condition, or may be any one of n ABS satisfying the second condition at the same time. The embodiment of the present application is not limited thereto.

Specifically, when the first time delay is greater than the second time delay, if the time obtained by subtracting the time delay difference from the current scheduling time is located before the current time by the serving base station, it is indicated that the serving base station cannot call the current ABS before the current time. In this case, the serving base station determines the first ABS after the current ABS configured by the interfering base station as the current ABS and determines the scheduling time corresponding thereto as the current scheduling time.

If the service base station is located after the current scheduling time minus the time delay difference, the service base station determines the current ABS as the target ABS, and the current scheduling time is determined as the scheduling time of the target ABS.

Or,

optionally, when the first time delay is smaller than the second time delay, if the time corresponding to the sum of the current scheduling time and the time delay difference is located before the current time, the serving base station determines the first ABS after the current ABS configured by the interfering base station as the current ABS, and determines the scheduling time corresponding to the first ABS as the current scheduling time.

Further, if the serving base station is located after the current scheduling time minus the time delay difference, the serving base station determines the current ABS as the target ABS, and the current scheduling time is determined as the scheduling time of the target ABS.

For example, assume that the current time is 15:50, the first time delay is 3min, the second time delay is 1min, the current scheduling time is 15:51, and the scheduling time of the first ABS after the current ABS configured by the interfering base station is 15:55. At this time, the first delay is greater than the second delay, and the delay difference is 2min. The time obtained by subtracting the time delay difference from the current scheduling time 15:51 for 2min is 15:49, and the time is positioned before the current time 15:50. The serving base station determines the first ABS after the current ABS configured by the interfering base station as the current ABS and the time 15:55 as the current scheduling time. The time obtained by subtracting the time delay difference from the current scheduling time 15:55 for 2min is 15:53, and the time is positioned after the current time 15:50. The serving base station determines the current ABS as the target ABS and the time 15:55 as the scheduling time of the target ABS.

In an implementation manner, referring to fig. 3, as shown in fig. 8, in S305, a method for determining, by a serving base station, a target time when the serving base station schedules resources for a terminal according to a delay difference between a first delay and a second delay and a scheduling time specifically includes: S801-S802.

S801, when the first time delay is larger than the second time delay, the service base station determines the difference between the scheduling time and the time delay difference as a target time.

Wherein the target time is located after the current time.

For example, assume that the current time is 15:50, the first time delay is 3 minutes, the second time delay is 1 minute, and the scheduling time is 16:00. At this time, the first time delay is greater than the second time delay, and the time delay difference is 2min, and the target time is 15:58 of the scheduling time 16:00 minus 2 min. The service base station schedules resources to the terminal at a target time 15:58, and reaches the terminal at a time 16:01 after a first delay; the interfering base station schedules the ABS at a scheduling time 16:00, reaches the terminal at a time 16:01 after a second delay, and overlaps with the time when the normal subframe of the serving base station reaches the terminal.

S802, when the first time delay is smaller than the second time delay, the service base station determines the sum of the scheduling time and the time delay difference as a target time.

Wherein the target time is located after the current time.

For example, assume that the current time is 15:50, the first time delay is 1min, the second time delay is 3min, and the scheduling time is 16:00. At this time, the first time delay is smaller than the second time delay, and the time delay difference is 2min, and the target time is 16:00 of the scheduling time plus 16:02 of 2 min. The service base station schedules resources to the terminal at a target time 16:02, and reaches the terminal at a time 16:03 after a first delay; the interfering base station schedules the ABS at a scheduling time 16:00, reaches the terminal at a time 16:03 after a second delay, and overlaps with the time when the normal subframe of the serving base station reaches the terminal.

The foregoing description of the solution provided by the embodiments of the present application has been mainly presented in terms of a method. To achieve the above functions, it includes corresponding hardware structures and/or software modules that perform the respective functions. Those of skill in the art will readily appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as hardware or combinations of hardware and computer software. Whether a function is implemented as hardware or computer software driven hardware depends upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.

The embodiment of the application can divide the functional modules of the terminal according to the method example, for example, each functional module can be divided corresponding to each function, and two or more functions can be integrated in one processing module. The integrated modules may be implemented in hardware or in software functional modules. Optionally, the division of the modules in the embodiment of the present application is schematic, which is merely a logic function division, and other division manners may be implemented in practice.

Fig. 9 is a schematic structural diagram of a device for reducing communication interference according to an embodiment of the present application. The communication interference reduction device may be used to perform the communication interference reduction method as shown in fig. 3 to 8. The apparatus for reducing communication interference shown in fig. 9 includes: an acquisition unit 901, a processing unit 902 and a scheduling unit 903.

An acquiring unit 901, configured to acquire a first delay and a second delay. The first time delay is information transmission time delay between the service base station and the terminal. The second time delay is information transmission time delay between the interference base station and the terminal. For example, in connection with fig. 3, the acquisition unit 901 may be used to perform S301 and S303.

The acquiring unit 901 is further configured to acquire a scheduling time when the interfering base station schedules a resource on the target almost blank subframe. For example, in connection with fig. 3, the acquisition unit 901 may be used to perform S304.

The processing unit 902 is configured to determine a target time when the serving base station schedules resources for the terminal according to the delay difference between the first delay and the second delay acquired by the acquiring unit 901, and the scheduling time. For example, in connection with fig. 3, the processing unit 902 may be used to perform S305.

A scheduling unit 903, configured to schedule resources for the terminal at the target time determined by the processing unit 902. For example, in connection with fig. 3, the scheduling unit 903 may be used to perform S306.

The acquiring unit 901 is specifically configured to receive a transmission time and a reception time sent by a terminal. The sending time is the sending time of the data transmission message sent by the interference base station to the terminal. The receiving time is the receiving time of the data transmission message sent by the terminal receiving interference base station. And determining the difference between the sending time and the receiving time as a second time delay. For example, in connection with fig. 3, the processing unit 902 may be used to perform S401 and S402.

The acquiring unit 901 is specifically configured to receive a second delay sent by the terminal. The second time delay is determined by the terminal according to the sending time and the receiving time. The sending time is the sending time of the data transmission message sent by the interference base station to the terminal. The receiving time is the receiving time of the data transmission message sent by the terminal receiving interference base station. For example, in connection with fig. 3, the processing unit 902 may be configured to perform S501.

The acquiring unit 901 is specifically configured to read a pre-stored correspondence between a base station and a scheduling time, so as to acquire a scheduling time when an interfering base station schedules a resource on a target almost blank subframe. For example, in connection with fig. 3, the processing unit 902 may be configured to perform S601.

Optionally, when the interfering base station includes a plurality of almost blank subframes, the acquiring unit 901 is further configured to acquire a current scheduling time when the interfering base station schedules resources on the current almost blank subframes. The current almost blank subframe is the first almost blank subframe of the interfering base station after the current moment. For example, in connection with fig. 3, the processing unit 902 may be used to perform S701.

The processing unit 902 is further configured to determine an nth almost blank subframe after the current almost blank subframe as the target almost blank subframe when the first delay is greater than the second delay and a time corresponding to a difference between the current scheduling time and the delay difference is located before the current time, or when the first delay is less than the second delay and a time corresponding to a sum of the current scheduling time and the delay difference is located before the current time. For example, in connection with fig. 3, the processing unit 902 may be configured to perform S702.

Wherein n is a natural number greater than zero. When the first time delay is greater than the second time delay, the time corresponding to the difference between the nth scheduling time and the time delay difference is located after the current time. Or when the first time delay is smaller than the second time delay, the time corresponding to the sum of the nth scheduling time and the time delay difference is positioned after the current time. The nth scheduling time is the scheduling time of the interfering base station scheduling resources on the nth almost blank subframe.

The processing unit 902 is specifically configured to determine, as the target time, a difference between the scheduling time and the time delay difference when the first time delay is greater than the second time delay. For example, in connection with fig. 3, the processing unit 902 may be configured to perform S801.

And when the first time delay is smaller than the second time delay, determining the sum of the scheduling time and the time delay difference as the target time. For example, in connection with fig. 3, the processing unit 902 may be configured to perform S802.

The acquiring unit 901 is further configured to acquire a base station having an interference signal strength to the terminal greater than a preset threshold. For example, in connection with fig. 3, the processing unit 902 may be configured to perform S302.

The processing unit 902 is further configured to determine the base station acquired by the acquisition unit 901 as an interfering base station. For example, in connection with fig. 3, the processing unit 902 may be configured to perform S302.

The embodiment of the application also provides a computer program which can be directly loaded into a memory and contains software codes, and the computer program can realize the information processing method provided by the embodiment after being loaded and executed by a computer.

Those skilled in the art will appreciate that in one or more of the examples described above, the functions described in the present application may be implemented in hardware, software, firmware, or any combination thereof. When implemented in software, these functions may be stored on or transmitted over as one or more instructions or code on a computer-readable medium. Computer-readable media includes both computer-readable storage media and communication media including any medium that facilitates transfer of a computer program from one place to another. A storage media may be any available media that can be accessed by a general purpose or special purpose computer.

From the foregoing description of the embodiments, it will be apparent to those skilled in the art that, for convenience and brevity of description, only the above-described division of functional modules is illustrated, and in practical application, the above-described functional allocation may be implemented by different functional modules according to needs, i.e. the internal structure of the apparatus is divided into different functional modules to implement all or part of the functions described above.

In the several embodiments provided by the present application, it should be understood that the disclosed apparatus and method may be implemented in other manners. For example, the above-described embodiments of the apparatus are merely illustrative, and the division of modules or units, for example, is merely a logical function division, and other manners of division are possible when actually implemented. For example, multiple units or components may be combined or may be integrated into another device, or some features may be omitted, or not performed. Alternatively, the coupling or direct coupling or communication connection shown or discussed with each other may be an indirect coupling or communication connection via some interfaces, devices or units, which may be in electrical, mechanical or other form. The units described as separate parts may or may not be physically separate, and the parts shown as units may be one physical unit or a plurality of physical units, may be located in one place, or may be distributed in a plurality of different places. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

In addition, each functional unit in the embodiments of the present application may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in one unit. The integrated units may be implemented in hardware or in software functional units. The integrated units, if implemented in the form of software functional units and sold or used as stand-alone products, may be stored in a readable storage medium. Based on such understanding, the technical solution of the embodiments of the present application may be essentially or a part contributing to the prior art or all or part of the technical solution may be embodied in the form of a software product stored in a storage medium, including several instructions for causing a device (may be a single-chip microcomputer, a chip or the like) or a processor (processor) to perform all or part of the steps of the method described in the embodiments of the present application. And the aforementioned storage medium includes: a usb disk, a removable hard disk, a ROM, a RAM, a magnetic disk, or an optical disk, etc.

The foregoing is merely illustrative of the present application, and the present application is not limited thereto, and any changes or substitutions easily contemplated by those skilled in the art within the scope of the present application should be included in the present application. Therefore, the protection scope of the application is subject to the protection scope of the claims.

Claims

1. A method for reducing communication interference, applied to a service base station, characterized in that the service base station belongs to a communication system comprising the service base station, an interference base station and a terminal; the method comprises the following steps:

acquiring a first time delay and a second time delay; the first time delay is information transmission time delay between the service base station and the terminal; the second time delay is information transmission time delay between the interference base station and the terminal;

acquiring the scheduling time of scheduling resources on a target almost blank subframe by the interference base station;

determining a target time for the service base station to schedule resources for the terminal according to the time delay difference between the first time delay and the second time delay and the scheduling time, and scheduling resources for the terminal at the target time;

the obtaining the second time delay includes:

receiving the sending time and the receiving time sent by the terminal; the sending time is the sending time of the data transmission message sent by the interference base station to the terminal; the receiving time is the receiving time of the data transmission message sent by the interference base station by the terminal;

determining a difference between the sending time and the receiving time as the second time delay;

Or,

receiving the second time delay sent by the terminal; the second time delay is determined by the terminal according to the sending time and the receiving time; the sending time is the sending time of the data transmission message sent by the interference base station to the terminal; the receiving time is the receiving time of the data transmission message sent by the interference base station by the terminal;

the obtaining the scheduling time of the scheduling resource of the interfering base station on the target almost blank subframe comprises the following steps:

and reading the corresponding relation between the pre-stored base station and the scheduling time to acquire the scheduling time of the scheduling resource of the interference base station on the target almost blank subframe.

2. The method of reducing interference to communications according to claim 1, wherein when the interfering base station comprises a plurality of almost blank subframes, the method further comprises:

acquiring the current scheduling time of the scheduling resource of the interference base station on the current almost blank subframe; the current almost blank subframe is the first almost blank subframe of the interfering base station after the current moment;

when the first delay is greater than the second delay and a time corresponding to a difference between the current scheduling time and the delay difference is located before the current time, or when the first delay is less than the second delay and a time corresponding to a sum of the current scheduling time and the delay difference is located before the current time, determining an nth almost blank subframe after the current almost blank subframe as the target almost blank subframe;

Wherein n is a natural number greater than zero; when the first time delay is larger than the second time delay, the time corresponding to the difference between the nth scheduling time and the time difference is located after the current time; or when the first time delay is smaller than the second time delay, the time corresponding to the sum of the nth scheduling time and the time difference is located after the current time; the nth scheduling time is the scheduling time of the interference base station for scheduling resources on the nth almost blank subframe.

3. The method for reducing interference to communications according to claim 1, wherein said determining a target time at which the serving base station schedules resources for the terminal according to a delay difference between the first delay and the second delay and the scheduling time comprises:

when the first time delay is larger than the second time delay, determining the difference between the scheduling time and the time delay difference as the target time;

and when the first time delay is smaller than the second time delay, determining the sum of the scheduling time and the time delay difference as the target time.

4. The method of reducing interference to communications according to claim 1 or 2, further comprising:

And acquiring a base station with interference signal intensity larger than a preset threshold value for the terminal, and determining the acquired base station as the interference base station.

5. An apparatus for reducing communication interference is applied to a service base station, and is characterized in that the service base station belongs to a communication system comprising the service base station, an interference base station and a terminal; the device comprises: the device comprises an acquisition unit, a processing unit and a scheduling unit;

the acquisition unit is used for acquiring the first time delay and the second time delay; the first time delay is information transmission time delay between the service base station and the terminal; the second time delay is information transmission time delay between the interference base station and the terminal;

the obtaining unit is further configured to obtain a scheduling time when the interfering base station schedules resources on a target almost blank subframe;

the processing unit is used for determining a target time for the service base station to schedule resources for the terminal according to the time delay difference between the first time delay and the second time delay acquired by the acquisition unit and the scheduling time;

the scheduling unit is used for scheduling resources for the terminal at the target moment determined by the processing unit;

The acquisition unit is specifically configured to:

the acquisition unit is specifically configured to:

6. The apparatus for reducing interference to communications according to claim 5, wherein when the interfering base station comprises a plurality of almost blank subframes,

The obtaining unit is further configured to obtain a current scheduling time of scheduling resources on a current almost blank subframe by the interfering base station; the current almost blank subframe is the first almost blank subframe of the interfering base station after the current moment;

the processing unit is further configured to determine, as the target almost blank subframe, an nth almost blank subframe after the current almost blank subframe acquired by the acquiring unit, when the first delay is greater than the second delay and a time corresponding to a difference between the current scheduling time and the delay difference is located before the current time, or when the first delay is less than the second delay and a time corresponding to a sum of the current scheduling time and the delay difference is located before the current time;

7. The apparatus for reducing interference to communications according to claim 5, wherein the processing unit is specifically configured to:

8. The apparatus for reducing communication interference according to claim 5 or 6, wherein,

the acquisition unit is further used for acquiring a base station with interference signal strength to the terminal being greater than a preset threshold value;

the processing unit is further configured to determine the base station acquired by the acquiring unit as the interfering base station.

9. An apparatus for reducing communication interference, comprising a memory and a processor; the memory is used for storing computer execution instructions, and the processor is connected with the memory through a bus; when the communication-interference reduction device is operated, the processor executes the computer-executable instructions stored in the memory to cause the communication-interference reduction device to perform the communication-interference reduction method according to any one of claims 1-4.

10. A computer-readable storage medium comprising computer-executable instructions that, when run on a computer, cause the computer to perform the method of reducing communication interference of any of claims 1-4.