WO2020042712A1

WO2020042712A1 - Communication method and device

Info

Publication number: WO2020042712A1
Application number: PCT/CN2019/090564
Authority: WO
Inventors: 严朝译; 谭婷; 李潇亚; 刘越; 代西桃; 罗帆
Original assignee: 华为技术有限公司
Priority date: 2018-08-31
Filing date: 2019-06-10
Publication date: 2020-03-05
Also published as: CN110875760B; CN110875760A

Abstract

Disclosed in the embodiments of the present application are a communication method and device. The method comprises: a first base station receiving first data transmitted from a server; the first base station transmitting first coordination information to a second base station within a first special symbol of a first subframe; the first base station receiving second coordination information transmitted from the second base station within a second special symbol of a third subframe, the second subframe being later than the first subframe and the third subframe; and the first base station using a time-frequency resource block to transmit the first data to a terminal. The first base station and the second base station can directly use subframes in an air interface resource to transmit coordination information therebetween, without using other forwarding devices for forwarding, so the negotiation between the first base station and the second base station is faster, and the first base station and the second base station can jointly transmit the first data and the second data to the terminal more quickly, thereby reducing the transmission delay of jointly transmitting the data to the terminal by the first base station and the second base station.

Description

Communication method and device

This application claims priority from a Chinese patent application filed with the Chinese Patent Office on August 31, 2018, with an application number of 201811008063.6 and an invention name of "a communication method and device", the entire contents of which are incorporated herein by reference.

Technical field

The embodiments of the present application relate to the field of communication technologies, and more specifically, to a communication method and device.

Background technique

At present, in the process of deploying base stations, signal coverage areas of two adjacent base stations usually have signal overlapping areas, and terminals located in the signal overlapping areas will receive both the useful signals of the primary base station and the interference signals of the secondary base station. The quality of the received signals of the terminals located in the overlapping area of the signal is poor, which affects the network experience.

In order to improve the quality of the signals received by the terminal, joint transmission (JT) technology can provide signals to the terminal through the primary base station and the secondary base station at the same time, so that the primary base station and the secondary base station send data provided by the server to the terminal.

Before the primary base station and the secondary base station send data to the terminal through a joint transmission technology, the primary base station and the secondary base station need to send coordination information to each other for negotiation. In the process of the primary base station sending the coordination information to the secondary base station, the primary base station needs to use multiple forwarding devices to forward the coordination information to the secondary base station. Similarly, during the process of the secondary base station sending the coordination information to the primary base station, the secondary base station The base station also needs to use multiple forwarding devices for forwarding to be able to send coordination information to the main base station.

Therefore, when the primary base station and the secondary base station send coordination information to each other, multiple forwarding devices are required to perform the forwarding, thereby increasing the transmission delay of the primary base station and the secondary base station jointly transmitting data to the terminal.

Summary of the Invention

Embodiments of the present application provide a communication method and device, which can reduce transmission delay during a process in which a first base station and a second base station send coordination information to each other.

The embodiment of the present application is implemented as follows:

In a first aspect, an embodiment of the present application provides a communication method. The method includes: a first base station receives first data sent by a server; the first base station sends a first base station to a second base station within a first special symbol of a first subframe; Coordination information, the first coordination information instructs the second base station to reserve a first number of time-frequency resource blocks in the second subframe; the first base station receives the second sent by the second base station in the second special symbol of the third subframe Coordination information, the second coordination information instructs the second base station to reserve a first number of time-frequency resource blocks at the first time-frequency position in the second subframe, and the second subframe is later than the first subframe and the third subframe The first base station sends the first data to the terminal using the time-frequency resource block.

In the first aspect, the first base station and the second base station can directly send coordination information to each other by using subframes in the air interface resources, and no other forwarding equipment is required for forwarding. Therefore, the negotiation between the first base station and the second base station The speed is faster, and the first base station and the second base station can more quickly send the first data and the second data to the terminal, thereby reducing the transmission delay of the first base station and the second base station jointly sending data to the terminal.

In a possible implementation manner, before the first base station sends the first coordination information to the second base station in the first special symbol of the first subframe, the method further includes: the first base station sends the 2 × i-1 special symbols are determined as the first special symbol set, i is a positive integer, the target time period includes at least the first subframe and the third subframe, and the first special symbol set includes at least one first special symbol, at least one first A special symbol includes the first special symbol of the first subframe, and at least one first special symbol is used by the first base station to send the first coordination information to the second base station.

In a possible implementation manner, before the first base station sends the first coordination information to the second base station in the first special symbol of the first subframe, the method further includes: the first base station sends the 2 × i special symbols are determined as a second special symbol set, the second special symbol set includes at least one second special symbol, at least one second special symbol includes a second special symbol of a third subframe, and at least one second special symbol is used for The second base station sends the second coordination information or the third coordination information to the first base station, and the third coordination information indicates an indication that the second base station rejects the first coordination information; the first base station sends the second special symbol set to the second base station.

Among them, in order to prevent the first base station or the second base station from sending and receiving coordination information in one special symbol, the first base station may determine the 2 × i-1 special symbol in the target time period as the first special symbol. Set to determine the 2 × i special symbols in the target time period as the second special symbol set, so that the first base station uses at least one first special symbol in the first special symbol set to send the first coordination to the second base station Information, the second base station sends at least one second special symbol in the second special symbol set to the first base station with the second coordination information or the third coordination information. Therefore, this embodiment can ensure that the first base station or the second base station sends only coordination information or receives only coordination information in a special symbol, thereby avoiding the problem of signal interference.

In a second aspect, an embodiment of the present application provides a communication method. The method includes: a second base station receiving second data sent by a server; and the second base station receiving the first data sent by the first base station in a first special symbol of a first subframe. First coordination information, the first coordination information instructs the second base station to reserve a first number of time-frequency resource blocks in the second subframe; the second base station sends the second base station a second special symbol in the third subframe to the first base station Coordination information, the second coordination information instructs the second base station to reserve a first number of time-frequency resource blocks at the first time-frequency position in the second subframe, and the second subframe is later than the first subframe and the third subframe ; The second base station sends the second data to the terminal using the time-frequency resource block.

In the second aspect, the first base station and the second base station can directly send coordination information to each other by using subframes in the air interface resources, and no other forwarding equipment is required for forwarding. Therefore, the negotiation between the first base station and the second base station The speed is faster, and the first base station and the second base station can more quickly send the first data and the second data to the terminal, thereby reducing the transmission delay of the first base station and the second base station jointly sending data to the terminal.

In a possible implementation manner, before the second base station receives the first coordination information sent by the first base station in the first special symbol of the first subframe, the method further includes: 2 × i special symbols are determined as the second special symbol set, i is a positive integer, the target time period includes at least the first subframe and the third subframe, the second special symbol set includes at least one second special symbol, and at least one first The two special symbols include the second special symbol of the third subframe, and at least one second special symbol is used by the second base station to send the second coordination information or the third coordination information to the first base station, and the third coordination information instructs the second base station to reject the first coordination information. An indication of coordination information.

In a possible implementation manner, before the second base station receives the first coordination information sent by the first base station in the first special symbol of the first subframe, the method further includes: 2 × i-1 special symbols are determined as the first special symbol set, the first special symbol set includes at least one first special symbol, the at least one first special symbol includes the first special symbol of the first subframe, and the at least one first The special symbol is used by the first base station to send the first coordination information to the second base station; the second base station sends the first special symbol set to the first base station.

Among them, in order to prevent the first base station or the second base station from sending and receiving coordination information in one special symbol, the second base station may determine the 2 × i-1 special symbol in the target time period as the first special symbol. Set to determine the 2 × i special symbols in the target time period as the second special symbol set, so that the first base station uses at least one first special symbol in the first special symbol set to send the first coordination to the second base station Information, the second base station sends at least one second special symbol in the second special symbol set to the first base station with the second coordination information or the third coordination information. Therefore, this embodiment can ensure that the first base station or the second base station sends only coordination information or receives only coordination information in a special symbol, thereby avoiding the problem of signal interference.

In a third aspect, an embodiment of the present application provides a base station, including: a receiving module configured to receive first data sent by a server; and a sending module configured to send a first base station to a second base station within a first special symbol of a first subframe. A coordination information, the first coordination information instructs the second base station to reserve a first number of time-frequency resource blocks in the second subframe; the receiving module is further configured to receive the second base station in the second special symbol of the third subframe The second coordination information sent, the second coordination information instructs the second base station to reserve a first number of time-frequency resource blocks at the first time-frequency position in the second subframe, and the second subframe is later than the first subframe and The third subframe; the sending module is further configured to send the first data to the terminal by using the time-frequency resource block.

In a possible implementation manner, the base station further includes a determining module. A determining module, configured to determine the 2 × i-1 special symbols in the target time period as the first special symbol set, i is a positive integer, and the target time period includes at least a first subframe and a third subframe, and the first The special symbol set includes at least one first special symbol, the at least one first special symbol includes the first special symbol of the first subframe, and the at least one first special symbol is used by the first base station to send the first coordination information to the second base station.

In a possible implementation manner, the determining module is further configured to determine the 2 × i special symbol in the target time period as a second special symbol set, and the second special symbol set includes at least one second special symbol, at least A second special symbol includes a second special symbol of a third subframe, and at least one second special symbol is used by the second base station to send the second coordination information or the third coordination information to the first base station, and the third coordination information indicates the second base station An instruction to reject the first coordination information; the sending module is further configured to send the second special symbol set to the second base station.

According to a fourth aspect, an embodiment of the present application provides a base station, including: a receiving module configured to receive second data sent by a server; the receiving module is further configured to receive a first base station within a first special symbol of a first subframe; The first coordination information sent, the first coordination information instructs the second base station to reserve a first number of time-frequency resource blocks in the second subframe; and a sending module is configured to send the first special frequency symbol to the first within the second special symbol of the third subframe The base station sends second coordination information, the second coordination information instructs the second base station to reserve a first number of time-frequency resource blocks at the first time-frequency position in the second subframe, and the second subframe is later than the first subframe and The third sub-frame; the sending module is further configured to send the second data to the terminal by using the time-frequency resource block.

In a possible implementation manner, the base station further includes a determining module. A determining module, configured to determine a 2 × i special symbol in a target time period as a second special symbol set, i is a positive integer, and the target time period includes at least a first subframe and a third subframe, and the second special symbol The set includes at least one second special symbol, at least one second special symbol includes a second special symbol of a third subframe, and at least one second special symbol is used for the second base station to send the second coordination information or the third coordination to the first base station. Information, the third coordination information indicates an indication that the second base station rejects the first coordination information.

In a possible implementation manner, the determining module is further configured to determine the 2 × i-1 special symbols in the target time period as the first special symbol set, and the first special symbol set includes at least one first special symbol The at least one first special symbol includes the first special symbol of the first subframe, and the at least one first special symbol is used by the first base station to send the first coordination information to the second base station; the sending module is further configured to use the first special symbol The set is sent to the first base station.

In a fifth aspect, an embodiment of the present application provides a base station, including a baseband processing unit BBU, a radio remote unit RRU, a coupling circuit, and an antenna. The BBU is configured to receive the first data sent by the server, and use the RRU, the coupling circuit, and the antenna to send the first coordination information to the second base station in the first special symbol of the first subframe. The first number of time-frequency resource blocks are reserved in the second subframe; the second coordination information sent by the second base station is received in the second special symbol of the third subframe using the RRU, the coupling circuit, and the antenna, and the second coordination information indicates The second base station reserves a first number of time-frequency resource blocks at the first time-frequency position in the second subframe, the second subframe is later than the first subframe and the third subframe; using the RRU, the coupling circuit, and the antenna The first data is sent to the terminal using a time-frequency resource block.

In a sixth aspect, an embodiment of the present application provides a base station including a baseband processing unit BBU, a radio remote unit RRU, a coupling circuit, and an antenna. The BBU is configured to receive the second data sent by the server, and use the RRU, the coupling circuit, and the antenna to receive the first coordination information sent by the first base station in the first special symbol of the first subframe, where the first coordination information indicates the second The base station reserves the first number of time-frequency resource blocks in the second subframe; and uses the RRU, the coupling circuit, and the antenna to send the second coordination information to the first base station in the second special symbol of the third subframe, and the second coordination information indicates The second base station reserves a first number of time-frequency resource blocks at the first time-frequency position in the second subframe, the second subframe is later than the first subframe and the third subframe; using the RRU, the coupling circuit, and the antenna Use the time-frequency resource block to send the second data to the terminal.

In a seventh aspect, an embodiment of the present application provides a base station, including one or more processors and a memory; wherein the one or more processors are configured to read software codes stored in the memory and execute the same as the first aspect And methods in various implementations of the first aspect.

In an eighth aspect, an embodiment of the present application provides a base station, including one or more processors and a memory; wherein the one or more processors are configured to read software codes stored in the memory and execute the same as the second aspect And the methods in various implementations of the second aspect.

In a ninth aspect, an embodiment of the present application provides a computer-readable storage medium. The computer-readable storage medium stores instructions, and when the computer-readable storage medium runs on a computer or a processor, the computer or the processor executes the first aspect. Or the method in any possible implementation manner of the first aspect.

According to a tenth aspect, an embodiment of the present application provides a computer-readable storage medium. The computer-readable storage medium stores instructions. When the computer-readable storage medium runs on a computer or a processor, the computer or the processor executes the second aspect. Or the method in any possible implementation manner of the second aspect.

According to an eleventh aspect, an embodiment of the present application provides a computer program product including instructions. When the computer program product is run on a computer or a processor, the computer or processor executes the first aspect or any one of the first aspect. Method in implementation.

In a twelfth aspect, an embodiment of the present application provides a computer program product containing instructions, which, when running on a computer or processor, causes the computer or processor to execute any of the foregoing second aspect or the second aspect. Method in implementation.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a schematic diagram of a joint sending scenario according to an embodiment of the present application;

FIG. 2 is a schematic structural diagram of a wireless frame according to an embodiment of the present application;

FIG. 3 is a schematic structural diagram of a time-frequency resource block in a subframe in FIG. 2; FIG.

FIG. 4 is a flowchart of a communication method according to an embodiment of the present application;

FIG. 5 is a flowchart of another communication method according to an embodiment of the present application;

FIG. 6 is a flowchart of still another communication method according to an embodiment of the present application;

FIG. 7 is a flowchart of still another communication method according to an embodiment of the present application;

FIG. 8 is a schematic diagram of a base station according to an embodiment of the present application

FIG. 9 is a schematic diagram of another base station according to an embodiment of the present application;

FIG. 10 is a schematic diagram of still another base station according to an embodiment of the present application;

FIG. 11 is a schematic diagram of still another base station according to an embodiment of the present application.

detailed description

1 to FIG. 3, FIG. 1 is a schematic diagram of a joint transmission scenario provided by an embodiment of the present application, and FIG. 2 is a schematic diagram of a wireless frame structure provided by an embodiment of the present application. FIG. 3 is a schematic structural diagram of a time-frequency resource block in a subframe in FIG. 2.

The equipment appearing in FIG. 1 includes a server 1, a first base station 2, a second base station 3, and a terminal 4. The signal coverage area A of the first base station 2 and the signal coverage area B of the second base station 3 have a signal overlapping area C, and the terminal 4 is located in the signal overlapping area C.

Please refer to FIG. 1 to FIG. 3. The following briefly describes the communication process between the server 1, the first base station 2, the second base station 3, and the terminal 4. The communication process mainly involves the first base station 2 and the second base station 3. Negotiation process.

First, when the server 1 needs to send target data to the terminal 4, the server 1 will split the target data into first data and second data, and send the first data to the first base station 2 and send the first data to the second base station 3. Two data. That is, the server 1 instructs the first base station 2 and the second base station 3 to jointly send the first data and the second data to the terminal 4.

Then, after the first base station 2 receives the first data sent by the server 1, the first base station 2 sends the first coordination information to the second base station 3 within the guard interval (GP) of the subframe 1, where the first The coordination information indicates that the second base station 3 reserves 50 time-frequency resource blocks in the subframe 9.

Secondly, after the second base station 3 receives the first coordination information sent by the first base station 2 within the guard interval of the subframe 1, the second base station 3 determines whether the available number of time-frequency resource blocks in the subframe 9 is greater than or Equal to 50. In this embodiment, it is assumed that the total number of time-frequency resource blocks in subframe 9 is 100, and the time-frequency resource blocks that can be used in subframe 9 are the first to 50th time-frequency resource blocks, and subframe 9 The time-frequency resource blocks that cannot be used within are the 51st to 100th time-frequency resource blocks. The second base station 3 determines that the available number of time-frequency resource blocks in the subframe 9 is 50, and the second base station 3 determines the first to 50th time-frequency resource blocks in the subframe 9 as the first time-frequency position.

Again, the second base station 3 sends the second coordination information to the first base station 2 within the guard interval of the subframe 6, and the second coordination information instructs the second base station 3 to reserve 50 hours at the first time-frequency position in the subframe 9 Frequency resource blocks, where the first time-frequency position is from the first time-frequency resource block to the 50th time-frequency resource block.

Finally, after the first base station 2 receives the second coordination information sent by the second base station 3 within the guard interval of the subframe 6, the first base station 2 and the second base station 3 negotiate successfully. The first base station 2 sends the first data to the terminal 4 at the first time-frequency position in the subframe 9, and the second base station 3 sends the second data to the terminal 4 at the first time-frequency position in the subframe 9. The first base station 2 and the second base station 3 jointly send the first data and the second data to the terminal 4.

In the embodiments shown in FIG. 1 to FIG. 3, subframe 1 and subframe 6 belong to special subframes with a guard interval. The guard interval in subframe 1 and the guard interval in subframe 6 are used for transmitting the first base station 2 and Coordination information sent between the second base stations 3; subframe 9 belongs to an ordinary subframe without a guard interval, and the time-frequency resource block in the subframe 9 is used to transmit the first base station 2 and the second base station 3 to the terminal 4 respectively. First data and second data sent. Of course, for the embodiments shown in FIG. 1 to FIG. 3, the time-frequency resource blocks in subframes 7 and 8 in FIG. 2 may also transmit the first and second base stations 2 and 3 respectively to the terminal 4. First data and second data.

In the embodiments shown in FIG. 1 to FIG. 3, the first base station 2 and the second base station 3 can directly send coordination information to each other by using the subframes in the air interface resources, and no other forwarding equipment is needed for forwarding. Therefore, the first The negotiation speed between the base station 2 and the second base station 3 is faster. The first base station 2 and the second base station 3 can more quickly send the first data and the second data to the terminal 4, thereby reducing the first base station 2 and the second base station 3. The transmission delay of the two base stations 3 jointly sending data to the terminal 4.

In the embodiments shown in FIG. 1 to FIG. 3, the embodiment of the present application uses a radio frame structure of a fourth generation mobile communication technology, and a time division duplex (TDD) type radio frame structure. The present application Embodiments may also use other types of radio frame structures. For example, the embodiment of the present application may also use the radio frame structure of the fifth generation mobile communication technology. In the radio frame structure of the fifth generation mobile communication technology, the flexible symbols in the subframes in the radio frame structure may be used Transmission of coordination information sent between the first base station 2 and the second base station 3, flexible symbols may not exist in one subframe in the radio frame structure, and one or more may also exist in one subframe in the radio frame structure. Flexible symbol.

FIG. 1 to FIG. 3 describe the communication process between the server 1, the first base station 2, the second base station 3, and the terminal 4. The following describes the communication method provided in the embodiment of the present application in detail.

Please refer to FIG. 4, which is a flowchart of a communication method according to an embodiment of the present application. The communication method shown in FIG. 4 can reduce the transmission delay of the first base station and the second base station jointly transmitting data to the terminal. The method shown in FIG. 4 includes the following steps.

Step S11: The server sends the first data and the second data to the first base station and the second base station, respectively.

The server splits the data to be sent jointly into the first data and the second data of the same size, and sends the first data and the second data to the first base station and the second base station, so as to facilitate the first base station and the second base station. The two base stations may jointly send the first data and the second data to the terminal.

Step S12: The first base station sends the first coordination information to the second base station within the first special symbol of the first subframe.

After the first base station receives the first data sent by the server, the first base station sends the first coordination information to the second base station within the first special symbol of the first subframe, and the first coordination information indicates that the second base station is in the first A first number of time-frequency resource blocks are reserved in two subframes.

For example, in conjunction with the embodiments shown in FIG. 1 to FIG. 3, it is assumed that the first base station 2 determines that the first data will occupy 50 time-frequency resource blocks of one subframe, and then the first base station 2 determines a first base station 2 and the second base station 3 jointly send the subframes of the first data and the second data to the terminal 4. Assuming that the first base station 2 determines 50 time-frequency resource blocks in the subframe 9, the first base station 2 will The first coordination information is sent to the second base station 3 within the guard interval of 1, and the first coordination information instructs the second base station 3 to reserve 50 time-frequency resource blocks in the subframe 9.

The first special symbol mentioned in step S12 may be a guard interval within a subframe in a radio frame structure of a fourth generation mobile communication technology, or may be a sub-frame in a radio frame structure of a fifth generation mobile communication technology. Flexible symbol within a frame.

Step S13: The second base station sends the second coordination information to the first base station within the second special symbol of the third subframe.

Wherein, after the second base station receives the first coordination information sent by the first base station within the first special symbol of the first subframe, the second base station will parse the first coordination information, and the second base station can know the first coordination The information indicates that the second base station reserves a first number of time-frequency resource blocks in the second subframe. Then, according to the indication of the first coordination information, the second base station reserves a first number of time-frequency resource blocks at the first time-frequency position in the second subframe, and the first time-frequency position in the second subframe indicates The positions of the first number of time-frequency resource blocks reserved by the second base station. After the second base station reserves the time-frequency resource block, the second base station sends the second coordination information to the first base station in the second special symbol of the third subframe, and the second coordination information indicates that the second base station is in the second subframe. A first number of time-frequency resource blocks are reserved at the first time-frequency position of, and the second subframe is later than the first subframe and the third subframe.

For example, in conjunction with the embodiments shown in FIG. 1 to FIG. 3, it is assumed that the first base station 2 sends the first coordination information to the second base station 3 within the guard interval of the subframe 1, and the first coordination information indicates that the second base station 3 is in the subframe. Reserve 50 time-frequency resource blocks within 9. After the second base station 3 receives the first coordination information sent by the first base station 2 within the guard interval of the subframe 1, the second base station 3 reserves the first one in the subframe 9 according to the indication of the first coordination information. To the 50th time-frequency resource block, the second base station 3 determines the first to 50th time-frequency resource block in the subframe 9 as the first time-frequency position. Then, the second base station 3 sends the second coordination information to the first base station 2 within the guard interval of the subframe 6, and the second coordination information instructs the second base station 3 to reserve 50 hours at the first time-frequency position in the subframe 9. Frequency resource blocks, where the first time-frequency position is from the first time-frequency resource block to the 50th time-frequency resource block.

The second special symbol mentioned in step S13 may be a guard interval in one subframe in the radio frame structure of the fourth generation mobile communication technology, or may be a sub frame in the radio frame structure of the fifth generation mobile communication technology. Flexible symbol within a frame.

Step S14, the first base station and the second base station jointly send the first data and the second data to the terminal by using the first number of time-frequency resource blocks reserved at the first time-frequency position in the second subframe.

Wherein, after the first base station receives the second coordination information sent by the second base station within the second special symbol of the third subframe, the first base station and the second base station successfully negotiate. The first base station and the second base station respectively use the first number of time-frequency resource blocks reserved at the first time-frequency position in the second subframe to jointly send the first data and the second data to the terminal.

For example, in conjunction with the embodiments shown in FIG. 1 to FIG. 3, it is assumed that after the first base station 2 receives the second coordination information sent by the second base station 3 within the guard interval of the subframe 6, the first base station 2 and the second base station 3 The negotiation was successful. The first base station 2 sends the first data to the terminal 4 at the first time-frequency position in the subframe 9, and the second base station 3 sends the second data to the terminal 4 at the first time-frequency position in the subframe 9. The first base station 2 and the second base station 3 jointly send the first data and the second data to the terminal 4.

In the embodiment shown in FIG. 4, the first base station and the second base station can directly send coordination information to each other by using subframes in the air interface resources, and no other forwarding equipment is required for forwarding. Therefore, the first base station and the second base station The negotiation speed between them is faster, and the first base station and the second base station can more quickly send the first data and the second data to the terminal, thereby reducing the transmission delay of the first base station and the second base station jointly sending data to the terminal. .

Please refer to FIG. 5, which is a flowchart of another communication method according to an embodiment of the present application. The embodiment shown in FIG. 5 is an extended embodiment based on the embodiment shown in FIG. 2, that is, the following steps may be included before step S12 in FIG. 2.

Step S21: The first base station determines the 2 × i-1 special symbols in the target time period as the first special symbol set.

Among them, i is a positive integer, the target time period includes at least the first subframe and the third subframe, the first special symbol set includes at least one first special symbol, and the at least one first special symbol includes the first special symbol of the first subframe. Symbol, at least one first special symbol is used by the first base station to send the first coordination information to the second base station.

For example, in conjunction with the embodiments shown in FIG. 1 to FIG. 3, assuming that the target time period includes subframe 1 and subframe 6, the guard interval of subframe 1 is the first special symbol, and the guard interval of subframe 6 is the second. Special symbol. The first base station determines the first special symbol in the target time period as the first special symbol set. At this time, the first special symbol set includes the first special symbol, that is, the first special symbol set includes the guard interval of subframe 1. The special symbols in the first special symbol set are used by the first base station 2 to send the first coordination information to the second base station 3.

Step S22: The first base station determines the 2 × i special symbols in the target time period as a second special symbol set.

The second special symbol set includes at least one second special symbol, at least one second special symbol includes a second special symbol of a third subframe, and at least one second special symbol is used for the second base station to send the second base station to the first base station. Coordination information or third coordination information, and the third coordination information indicates an indication that the second base station rejects the first coordination information.

For example, in conjunction with the embodiments shown in FIG. 1 to FIG. 3, assuming that the target time period includes subframe 1 and subframe 6, the guard interval of subframe 1 is the first special symbol, and the guard interval of subframe 6 is the second. Special symbol. The first base station determines the second special symbol in the target time period as the second special symbol set. At this time, the second special symbol set includes the second special symbol, that is, the second special symbol set includes the guard interval of the subframe 6. The special symbols in the second special symbol set are used for the second base station 3 to send the second coordination information or the third coordination information to the first base station 2.

Step S23: The first base station sends the second special symbol set to the second base station.

After the first base station determines the 2 × i special symbols in the target time period as the second special symbol set, in order to ensure that the second base station can use the special symbols in the second special symbol set to send the second coordination information or Third coordination information, the first base station needs to send the second special symbol set to the second base station.

In the embodiment shown in FIG. 5, if the first base station or the second base station sends and receives coordination information in a special symbol, a signal interference problem may occur in the special symbol. In order to prevent the first base station or the second base station from sending and receiving coordination information in one special symbol, the first base station may determine the 2 × i-1 special symbols in the target time period as the first special symbol set. Determine the 2 × i special symbols in the target time period as a second special symbol set, so that the first base station sends at least one first special symbol in the first special symbol set to the second base station with the first coordination information, The second base station sends at least one second special symbol in the second special symbol set to the first base station with the second coordination information or the third coordination information. Therefore, the embodiment shown in FIG. 5 can ensure that the first base station or the second base station sends only coordination information or receives only coordination information within a special symbol, thereby avoiding the problem of signal interference.

Please refer to FIG. 6, which is a flowchart of another communication method according to an embodiment of the present application. The embodiment shown in FIG. 6 is an extended embodiment based on the embodiment shown in FIG. 2, that is, the following steps may be included before step S12 in FIG. 2.

Step S31: The second base station determines the 2 × i special symbols in the target time period as a second special symbol set.

Wherein, i is a positive integer, the target time period includes at least the first subframe and the third subframe, the second special symbol set includes at least one second special symbol, and the at least one second special symbol includes the second special symbol of the third subframe. Symbol, at least one second special symbol is used for the second base station to send the second coordination information or the third coordination information to the first base station, and the third coordination information instructs the second base station to reject the first coordination information.

For example, in conjunction with the embodiments shown in FIG. 1 to FIG. 3, assuming that the target time period includes subframe 1 and subframe 6, the guard interval of subframe 1 is the first special symbol, and the guard interval of subframe 6 is the second. Special symbol. The second base station determines the second special symbol in the target time period as the second special symbol set. At this time, the second special symbol set includes the second special symbol, that is, the second special symbol set includes the guard interval of the subframe 6. The special symbols in the second special symbol set are used for the second base station 3 to send the second coordination information or the third coordination information to the first base station 2.

Step S32: The second base station determines the 2 × i-1 special symbols in the target time period as the first special symbol set.

The first special symbol set includes at least one first special symbol, at least one first special symbol includes a first special symbol of a first subframe, and at least one first special symbol is used by a first base station to send a first base station to a second base station. Coordinate information.

For example, in conjunction with the embodiments shown in FIG. 1 to FIG. 3, assuming that the target time period includes subframe 1 and subframe 6, the guard interval of subframe 1 is the first special symbol, and the guard interval of subframe 6 is the second. Special symbol. The second base station determines the first special symbol in the target time period as the first special symbol set. At this time, the first special symbol set includes the first special symbol, that is, the first special symbol set includes the guard interval of subframe 1. The special symbols in the first special symbol set are used by the first base station 2 to send the first coordination information to the second base station 3.

Step S33: The second base station sends the first special symbol set to the first base station.

After the second base station determines the 2 × i-1 special symbols in the target time period as the first special symbol set, in order to ensure that the first base station can use the special symbols in the first special symbol set to send the first coordination Information, the second base station needs to send the first special symbol set to the first base station.

In the embodiment shown in FIG. 6, if the first base station or the second base station sends and receives coordination information in a special symbol, a signal interference problem may occur in the special symbol. In order to prevent the first base station or the second base station from sending and receiving coordination information in one special symbol, the second base station may determine the 2 × i-1 special symbol in the target time period as the first special symbol set. Determine the 2 × i special symbols in the target time period as a second special symbol set, so that the first base station sends at least one first special symbol in the first special symbol set to the second base station with the first coordination information, The second base station sends at least one second special symbol in the second special symbol set to the first base station with the second coordination information or the third coordination information. Therefore, the embodiment shown in FIG. 6 can ensure that the first base station or the second base station sends only coordination information or receives only coordination information within a special symbol, thereby avoiding the problem of signal interference.

Please refer to FIG. 7, which is a flowchart of another communication method according to an embodiment of the present application. The communication method shown in FIG. 7 can reduce the transmission delay of the first base station and the second base station jointly transmitting data to the terminal. The method shown in FIG. 7 includes the following steps.

Step S41: The server sends the first data and the second data to the first base station and the second base station, respectively.

Step S41 is the same as step S11 in FIG. 4. For step S41, reference may be made to the explanation of step S11 in the embodiment shown in FIG. 4.

Step S42: The first base station sends the first coordination information to the second base station within the first special symbol of the first subframe.

Step S42 is the same as step S12 in FIG. 4. For step S42, reference may be made to the explanation of step S12 in the embodiment shown in FIG. 4.

Step S43: The second base station determines whether the available number of time-frequency resource blocks in the second subframe is greater than or equal to the first number. If yes, perform steps S44 to S46, otherwise, perform step S47.

Step S44: The second base station determines a first number of time-frequency resource blocks at the first time-frequency position in the second subframe.

Step S45: The second coordination information sent by the second base station to the first base station within the second special symbol of the third subframe.

Step S46, the first base station and the second base station jointly send the first data and the second data to the terminal by using the first number of time-frequency resource blocks reserved at the first time-frequency position in the second subframe.

The second coordination information indicates that the second base station reserves a first number of time-frequency resource blocks at the first time-frequency position in the second subframe, and the second subframe is later than the first subframe and the third subframe.

In order to better understand step S44 to step S46, a detailed description is given below through an example.

For example, in conjunction with the embodiments shown in FIG. 1 to FIG. 3, it is assumed that the first coordination information instructs the second base station 3 to reserve 50 time-frequency resource blocks in the subframe 9. After the second base station 3 receives the first coordination information sent by the first base station 2 within the guard interval of the subframe 1, the second base station 3 determines whether the available number of time-frequency resource blocks in the subframe 9 is greater than or equal to 50 Each. In this embodiment, it is assumed that the total number of time-frequency resource blocks in subframe 9 is 100, and the time-frequency resource blocks that can be used in subframe 9 are the first to 50th time-frequency resource blocks, and subframe 9 The time-frequency resource blocks that cannot be used within are the 51st to 100th time-frequency resource blocks. The second base station 3 determines that the available number of time-frequency resource blocks in the subframe 9 is 50, and the second base station 3 determines the first to 50th time-frequency resource blocks in the subframe 9 as the first time-frequency position. Then, the second base station 3 sends the second coordination information to the first base station 2 within the guard interval of the subframe 6, and the second coordination information instructs the second base station 3 to reserve 50 hours at the first time-frequency position in the subframe 9. Frequency resource blocks, where the first time-frequency position is from the first time-frequency resource block to the 50th time-frequency resource block. Finally, after the first base station 2 receives the second coordination information sent by the second base station 3 within the guard interval of the subframe 6, the first base station 2 and the second base station 3 negotiate successfully. The first base station 2 sends the first data to the terminal 4 at the first time-frequency position in the subframe 9, and the second base station 3 sends the second data to the terminal 4 at the first time-frequency position in the subframe 9. The first base station 2 and the second base station 3 jointly send the first data and the second data to the terminal 4.

Step S47: The second base station sends the third coordination information to the first base station within the second special symbol of the third subframe, and the third coordination information instructs the second base station to reject the first coordination information.

In order to better understand step S47, a detailed description is given below through an example.

For example, in conjunction with the embodiments shown in FIG. 1 to FIG. 3, it is assumed that the first coordination information instructs the second base station 3 to reserve 50 time-frequency resource blocks in the subframe 9. After the second base station 3 receives the first coordination information sent by the first base station 2 within the guard interval of the subframe 1, the second base station 3 determines whether the available number of time-frequency resource blocks in the subframe 9 is greater than or equal to 50 Each. In this embodiment, it is assumed that the total number of time-frequency resource blocks in subframe 9 is 100, and the time-frequency resource blocks that can be used in subframe 9 are the first to 40th time-frequency resource blocks, and subframe 9 The time-frequency resource blocks that cannot be used within are the 41st to 100th time-frequency resource blocks. The second base station 3 determines that the available number of time-frequency resource blocks in the subframe 9 is 40, indicating that the second base station 3 cannot reserve 50 time-frequency resource blocks in the subframe 9, and the second base station 3 will The third coordination information is sent to the first base station 2 within the guard interval of the frame 6, and the third coordination information instructs the second base station 3 to reject the first coordination information.

In the embodiment shown in FIG. 7, the first base station and the second base station can directly send coordination information to each other by using subframes in the air interface resources, and no other forwarding equipment is required for forwarding. Therefore, the first base station and the second base station The negotiation speed between them is faster, and the first base station and the second base station can more quickly send the first data and the second data to the terminal, thereby reducing the transmission delay of the first base station and the second base station jointly sending data to the terminal. . In addition, the second base station will determine whether the available number of time-frequency resource blocks in the second subframe is greater than or equal to the first number, and if so, the second base station will agree to jointly send the first base station to the terminal in the second subframe. Data, otherwise, the second base station will refuse to send data to the terminal jointly with the first base station in the second subframe.

Please refer to FIG. 8, which is a schematic diagram of a base station according to an embodiment of the present application. The base station includes the following modules:

The receiving module 11 is configured to receive first data sent by a server. For a specific detailed implementation manner, please refer to the detailed description corresponding to step S11 in the method embodiment shown in FIG. 4 above.

The sending module 12 is configured to send the first coordination information to the second base station in the first special symbol of the first subframe, and the first coordination information instructs the second base station to reserve a first number of time-frequency resource blocks in the second subframe. . For a specific detailed implementation manner, please refer to the detailed description corresponding to step S12 in the method embodiment shown in FIG. 4 above.

The receiving module 11 is further configured to receive the second coordination information sent by the second base station in the second special symbol of the third subframe, where the second coordination information indicates that the second base station is at the first time-frequency position in the second subframe. A first number of time-frequency resource blocks are reserved, and the second subframe is later than the first subframe and the third subframe. For a specific detailed implementation manner, refer to the detailed description corresponding to step S13 in the method embodiment shown in FIG. 4 above.

The sending module 12 is further configured to send the first data to the terminal by using the time-frequency resource block. For a specific detailed implementation manner, please refer to the detailed description corresponding to step S14 in the method embodiment shown in FIG. 4 above.

In an implementable embodiment, the base station may further include a determining module 13 for determining the 2 × i-1 special symbols in the target time period as the first special symbol set, where i is a positive integer. , The target time period includes at least a first subframe and a third subframe, the first special symbol set includes at least one first special symbol, at least one first special symbol includes the first special symbol of the first subframe, and at least one first The special symbol is used by the first base station to send the first coordination information to the second base station. For a specific detailed implementation manner, please refer to the detailed description corresponding to step S21 in the method embodiment shown in FIG. 5 above.

In an implementable embodiment, the determining module 13 is further configured to determine the 2 × i special symbol in the target time period as a second special symbol set, and the second special symbol set includes at least one second special symbol The at least one second special symbol includes the second special symbol of the third subframe, and the at least one second special symbol is used by the second base station to send the second coordination information or the third coordination information to the first base station, and the third coordination information indicates the first The two base stations reject the indication of the first coordination information. The sending module 12 is further configured to send the second special symbol set to the second base station. For a specific and detailed implementation manner, please refer to the detailed description corresponding to steps S22 and S23 in the method embodiment shown in FIG. 5 above.

Please refer to FIG. 9, which is a schematic diagram of another base station according to an embodiment of the present application. The base station includes the following modules:

The receiving module 21 is configured to receive second data sent by a server. For a specific detailed implementation manner, please refer to the detailed description corresponding to step S11 in the method embodiment shown in FIG. 4 above.

The receiving module 21 is further configured to receive the first coordination information sent by the first base station in the first special symbol of the first subframe, where the first coordination information instructs the second base station to reserve a first number of times in the second subframe. Frequency resource block. For a specific detailed implementation manner, please refer to the detailed description corresponding to step S12 in the method embodiment shown in FIG. 4 above.

The sending module 22 is configured to send the second coordination information to the first base station in the second special symbol of the third subframe, and the second coordination information instructs the second base station to reserve the first coordination information at the first time-frequency position in the second subframe. For a number of time-frequency resource blocks, the second subframe is later than the first subframe and the third subframe. For a specific detailed implementation manner, please refer to the detailed description corresponding to step S13 in the method embodiment shown in FIG. 4 above.

The sending module 22 is further configured to send the second data to the terminal by using the time-frequency resource block. For a specific detailed implementation manner, please refer to the detailed description corresponding to step S14 in the method embodiment shown in FIG. 4 above.

In an implementable embodiment, the base station may further include a determining module 23 configured to determine the 2 × i special symbol in the target time period as a second special symbol set, where i is a positive integer, and the target The time period includes at least a first subframe and a third subframe, the second special symbol set includes at least one second special symbol, at least one second special symbol includes a second special symbol of the third subframe, and at least one second special symbol The second base station sends the second coordination information or the third coordination information to the first base station, and the third coordination information indicates an indication that the second base station rejects the first coordination information. For a specific detailed implementation manner, please refer to the detailed description corresponding to step S31 in the method embodiment shown in FIG. 6 above.

In an implementable embodiment, the determining module 23 is further configured to determine the 2 × i-1 special symbols in the target time period as a first special symbol set, where the first special symbol set includes at least one first Special symbol, at least one first special symbol includes the first special symbol of the first subframe, at least one first special symbol is used by the first base station to send the first coordination information to the second base station; the sending module 22 is further configured to send the first A special symbol set is sent to the first base station. For a specific detailed implementation manner, please refer to the detailed description corresponding to steps S32 and S33 in the method embodiment shown in FIG. 6 above.

Please refer to FIG. 10, which is a schematic diagram of still another base station according to an embodiment of the present application. In the embodiment shown in FIG. 10, the base station includes a baseband processing unit (BBU) 31, a remote radio unit (RRU) 32, a coupling circuit 33, and an antenna 34.

In the embodiment shown in FIG. 10, the baseband processing unit 31 is configured to receive the first data sent by the server, and use the radio remote unit 32, the coupling circuit 33, and the antenna 34 to transmit the first data in the first special symbol of the first subframe to the The two base stations send the first coordination information, and the first coordination information instructs the second base station to reserve a first number of time-frequency resource blocks in the second subframe; the radio remote unit 32, the coupling circuit 33, and the antenna 34 are used in the third sub-frame. Receiving second coordination information sent by a second base station in a second special symbol of a frame, the second coordination information instructing the second base station to reserve a first number of time-frequency resource blocks at a first time-frequency position in a second subframe, The second subframe is later than the first subframe and the third subframe; the radio frequency remote unit 32, the coupling circuit 33, and the antenna 34 use the time-frequency resource block to send the first data to the terminal.

In the embodiment shown in FIG. 10, when the base station sends the first coordination information or the first data to the second base station or the terminal, the baseband processing unit 31 of the base station transmits the baseband signal having the first coordination information or the first data. Transmission to the RF remote unit 32, the RF remote unit 32 converts the baseband signal into a RF signal, the RF remote unit 32 sends the RF signal to the coupling circuit 33, the coupling circuit 33 performs filtering processing on the RF signal, and the coupling circuit 33 filters The processed radio frequency signal is sent to the second base station or terminal through the antenna 34.

In the embodiment shown in FIG. 10, when the base station receives the first data or the second coordination information sent by the server or the second base station, the antenna 34 of the base station receives the first data or the second data sent by the server or the second base station. To coordinate the RF signal of the information, the antenna 34 sends the RF signal to the coupling circuit 33. The coupling circuit 33 filters the RF signal. The coupling circuit 33 sends the filtered RF signal to the RF remote unit 32, and the RF remote unit 32. The radio frequency signal is converted into a baseband signal, and the radio remote unit 32 sends the baseband signal to the baseband processing unit 31.

In the embodiment shown in FIG. 10, regarding the execution process of the base station, please refer to the detailed description corresponding to steps S11 to S14 in the method embodiment shown in FIG. 4 above.

Please refer to FIG. 11, which is a schematic diagram of still another base station according to an embodiment of the present application. In the embodiment shown in FIG. 11, the base station includes a baseband processing unit 41, a radio frequency remote unit 42, a coupling circuit 43, and an antenna 44.

In the embodiment shown in FIG. 11, the baseband processing unit 41 is configured to receive the second data sent by the server, and use the radio remote unit 42, the coupling circuit 43, and the antenna 44 to receive the second data in the first special symbol of the first subframe. The first coordination information sent by the first base station, the first coordination information instructs the second base station to reserve a first number of time-frequency resource blocks in the second subframe; using the radio remote unit 42, the coupling circuit 43, and the antenna 44 Sending the second coordination information to the first base station within the second special symbol of the three subframes, the second coordination information instructing the second base station to reserve a first number of time-frequency resource blocks at the first time-frequency position in the second subframe, The second subframe is later than the first subframe and the third subframe; the radio frequency remote unit 42, the coupling circuit 43, and the antenna 44 use the time-frequency resource block to send the second data to the terminal.

In the embodiment shown in FIG. 11, when the base station sends the second coordination information or the second data to the first base station or the terminal, the baseband processing unit 41 of the base station sends the baseband signal having the second coordination information or the second data. Transmission to the remote radio frequency unit 42, the remote radio frequency unit 42 converts the baseband signal into a radio frequency signal, the remote radio frequency unit 42 sends the radio frequency signal to the coupling circuit 43, the coupling circuit 43 performs filtering processing on the radio frequency signal, and the coupling circuit 43 filters The processed radio frequency signal is sent to the first base station or terminal through the antenna 44.

In the embodiment shown in FIG. 11, when the base station receives the second data or the first coordination information sent by the server or the first base station, the antenna 44 of the base station receives the second data or the first data sent by the server or the first base station. Coordinating the RF signal, the antenna 44 sends the RF signal to the coupling circuit 43, the coupling circuit 43 filters the RF signal, and the coupling circuit 43 sends the filtered RF signal to the RF remote unit 42 and the RF remote unit 42. The radio frequency signal is converted into a baseband signal, and the radio remote unit 42 sends the baseband signal to the baseband processing unit 41.

In the embodiment shown in FIG. 11, for the execution process of the base station, please refer to the detailed description corresponding to steps S11 to S14 in the method embodiment shown in FIG. 4 above.

In the above embodiments, it may be implemented in whole or in part by software, hardware, firmware, or any combination thereof. When implemented in software, it may be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, the processes or functions according to the embodiments of the present invention are wholly or partially generated. The computer may be a general-purpose computer, a special-purpose computer, a computer network, or other programmable devices. The computer instructions may be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another computer-readable storage medium, for example, the computer instructions may be from a website site, computer, server, or data center Transmission by wire (for example, coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (for example, infrared, wireless, microwave, etc.) to another website site, computer, server, or data center. The computer-readable storage medium may be any available medium that can be accessed by a computer or a data storage device such as a server, a data center, and the like that includes one or more available medium integration. The usable medium may be a magnetic medium (for example, a floppy disk, a hard disk, a magnetic tape), an optical medium (for example, a DVD), or a semiconductor medium (for example, a solid state disk (SSD)).

Claims

A communication method, characterized in that the method includes:

Receiving, by a first base station, first data sent by a server;

Sending, by the first base station, first coordination information to a second base station within a first special symbol of a first subframe, the first coordination information instructing the second base station to reserve a first number of times in a second subframe Frequency resource block

Receiving, by the first base station, second coordination information sent by the second base station in a second special symbol of a third subframe, where the second coordination information indicates that the second base station is in the second subframe The first number of time-frequency resource blocks is reserved at a first time-frequency position, and the second subframe is later than the first subframe and the third subframe;

Sending, by the first base station, the first data to a terminal using the time-frequency resource block.
The communication method according to claim 1, wherein before the first base station sends the first coordination information to the second base station within the first special symbol of the first subframe, the method further comprises:

The first base station determines the 2 × i-1 special symbols in a target time period as a first special symbol set, where i is a positive integer, and the target time period includes at least the first subframe and all The third subframe, the first special symbol set includes at least one first special symbol, the at least one first special symbol includes the first special symbol of the first subframe, and the at least one first The special symbol is used by the first base station to send the first coordination information to the second base station.
The communication method according to claim 2, wherein before the first base station sends the first coordination information to the second base station within the first special symbol of the first subframe, the method further comprises:

Determining, by the first base station, the 2 × i special symbols in the target time period as a second special symbol set, where the second special symbol set includes at least one second special symbol, and the at least one second special symbol The symbols include the second special symbol of the third subframe, and the at least one second special symbol is used by the second base station to send the second coordination information or third coordination information to the first base station, The third coordination information indicates an indication that the second base station rejects the first coordination information;

Sending, by the first base station, the second special symbol set to the second base station.
A communication method, characterized in that the method includes:

The second base station receives the second data sent by the server;

Receiving, by the second base station, first coordination information sent by the first base station within a first special symbol of a first subframe, where the first coordination information instructs the second base station to reserve a first A number of time-frequency resource blocks;

Sending, by the second base station, second coordination information to the first base station within a second special symbol of a third subframe, the second coordination information indicating the first coordination information of the second base station in the second subframe The first number of time-frequency resource blocks are reserved at the time-frequency position, and the second subframe is later than the first subframe and the third subframe;

Sending, by the second base station, the second data to a terminal using the time-frequency resource block.
The communication method according to claim 4, wherein before the second base station receives the first coordination information sent by the first base station in the first special symbol of the first subframe, the method further comprises :

Determining, by the second base station, a 2 × i special symbol in a target time period as a second special symbol set, where i is a positive integer, and the target time period includes at least the first subframe and the first Three subframes, the second special symbol set includes at least one second special symbol, the at least one second special symbol includes the second special symbol of the third subframe, and the at least one second special symbol And configured for the second base station to send the second coordination information or the third coordination information to the first base station, where the third coordination information indicates an indication that the second base station rejects the first coordination information.
The communication method according to claim 5, wherein before the second base station receives the first coordination information sent by the first base station in the first special symbol of the first subframe, the method further comprises :

Determining, by the second base station, the 2 × i-1 special symbols in the target time period as a first special symbol set, where the first special symbol set includes at least one first special symbol, and the at least one first A special symbol includes the first special symbol of the first subframe, and the at least one first special symbol is used by the first base station to send the first coordination information to the second base station;

Sending, by the second base station, the first special symbol set to the first base station.
A base station, comprising:

A receiving module, configured to receive first data sent by a server;

A sending module, configured to send the first coordination information to the second base station within the first special symbol of the first subframe, where the first coordination information instructs the second base station to reserve a first number of times in the second subframe Frequency resource block

The receiving module is further configured to receive second coordination information sent by the second base station in a second special symbol of a third subframe, where the second coordination information indicates that the second base station is in the second subframe The first number of time-frequency resource blocks are reserved at a first time-frequency position in the frame, and the second subframe is later than the first subframe and the third subframe;

The sending module is further configured to send the first data to a terminal by using the time-frequency resource block.
The base station according to claim 7, further comprising:

A determining module, configured to determine a 2 × i-1 special symbol in a target time period as a first special symbol set, where i is a positive integer, and the target time period includes at least the first subframe and all The third subframe, the first special symbol set includes at least one first special symbol, the at least one first special symbol includes the first special symbol of the first subframe, and the at least one first The special symbol is used by the first base station to send the first coordination information to the second base station.
The base station according to claim 8, characterized in that:

The determining module is further configured to determine a 2 × i special symbol in the target time period as a second special symbol set, where the second special symbol set includes at least one second special symbol, and the at least one The second special symbol includes the second special symbol of the third subframe, and the at least one second special symbol is used by the second base station to send the second coordination information or the third base station to the first base station. Coordination information, where the third coordination information indicates an indication that the second base station rejects the first coordination information;

The sending module is further configured to send the second special symbol set to the second base station.
A base station, comprising:

A receiving module, configured to receive second data sent by a server;

The receiving module is further configured to receive first coordination information sent by the first base station in a first special symbol of a first subframe, where the first coordination information indicates that the second base station is in a second subframe Reserve a first number of time-frequency resource blocks;

A sending module, configured to send second coordination information to the first base station within the second special symbol of the third subframe, where the second coordination information indicates the first coordination information of the second base station in the second subframe The first number of time-frequency resource blocks are reserved at the time-frequency position, and the second subframe is later than the first subframe and the third subframe;

The sending module is further configured to send the second data to a terminal by using the time-frequency resource block.
The base station according to claim 10, further comprising:

A determining module, configured to determine a 2 × i special symbol in a target time period as a second special symbol set, where i is a positive integer, and the target time period includes at least the first subframe and the first Three subframes, the second special symbol set includes at least one second special symbol, the at least one second special symbol includes the second special symbol of the third subframe, and the at least one second special symbol And configured for the second base station to send the second coordination information or the third coordination information to the first base station, where the third coordination information indicates an indication that the second base station rejects the first coordination information.
The base station according to claim 11, wherein:

The determining module is further configured to determine a 2 × i-1 special symbol in the target time period as a first special symbol set, where the first special symbol set includes at least one first special symbol, and At least one first special symbol includes the first special symbol of the first subframe, and the at least one first special symbol is used by the first base station to send the first coordination information to the second base station;

The sending module is further configured to send the first special symbol set to the first base station.
A base station, comprising a baseband processing unit BBU, a radio remote unit RRU, a coupling circuit, and an antenna;

The BBU is configured to receive first data sent by a server, and use the RRU, the coupling circuit, and the antenna to send first coordination information to a second base station within a first special symbol of a first subframe, A coordination information instructs the second base station to reserve a first number of time-frequency resource blocks in a second subframe; using the RRU, the coupling circuit, and the antenna in a second special symbol of a third subframe Receiving second coordination information sent by the second base station, the second coordination information instructing the second base station to reserve the first number of time-frequency at a first time-frequency position in the second subframe A resource block, the second subframe is later than the first subframe and the third subframe; using the RRU, the coupling circuit, and the antenna to send the terminal to the terminal using the time-frequency resource block First data.
A base station, comprising a baseband processing unit BBU, a radio remote unit RRU, a coupling circuit, and an antenna;

The BBU is configured to receive second data sent by a server, and use the RRU, the coupling circuit, and the antenna to receive first coordination information sent by the first base station in a first special symbol of a first subframe. The first coordination information instructs the second base station to reserve a first number of time-frequency resource blocks in the second subframe; using the RRU, the coupling circuit, and the antenna in the first subframe of the third subframe; Sending second coordination information to the first base station within two special symbols, the second coordination information instructing the second base station to reserve the first quantity of the first time-frequency position in the second subframe A time-frequency resource block, the second subframe is later than the first subframe and the third subframe; and the RRU, the coupling circuit, and the antenna are used to send to the terminal using the time-frequency resource block The second data.
A computer-readable storage medium, comprising instructions that, when run on a computer, causes a computer to perform the method according to any one of claims 1 to 3, or causes a computer to perform the method according to any one of claims 4 to The method according to any one of 6.
A computer program product, which, when run on a computer, causes the computer to perform the method according to any one of claims 1 to 3, or causes the computer to perform any one of claims 4 to 6 The method described.