CN110875760A - Communication method and device - Google Patents

Communication method and device Download PDF

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Publication number
CN110875760A
CN110875760A CN201811008063.6A CN201811008063A CN110875760A CN 110875760 A CN110875760 A CN 110875760A CN 201811008063 A CN201811008063 A CN 201811008063A CN 110875760 A CN110875760 A CN 110875760A
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China
Prior art keywords
base station
special symbol
subframe
coordination information
time
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CN201811008063.6A
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Chinese (zh)
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CN110875760B (en
Inventor
严朝译
谭婷
李潇亚
刘越
代西桃
罗帆
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Huawei Technologies Co Ltd
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Huawei Technologies Co Ltd
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Priority to CN201811008063.6A priority Critical patent/CN110875760B/en
Priority to PCT/CN2019/090564 priority patent/WO2020042712A1/en
Publication of CN110875760A publication Critical patent/CN110875760A/en
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Publication of CN110875760B publication Critical patent/CN110875760B/en
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/022—Site diversity; Macro-diversity
    • H04B7/024—Co-operative use of antennas of several sites, e.g. in co-ordinated multipoint or co-operative multiple-input multiple-output [MIMO] systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0032—Distributed allocation, i.e. involving a plurality of allocating devices, each making partial allocation
    • H04L5/0035—Resource allocation in a cooperative multipoint environment
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/16—Central resource management; Negotiation of resources or communication parameters, e.g. negotiating bandwidth or QoS [Quality of Service]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource

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  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Quality & Reliability (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

The embodiment of the application discloses a communication method and a device, wherein the method comprises the following steps: a first base station receives first data sent by a server; the first base station sends first coordination information to the second base station in a first special symbol of a first subframe; the first base station receives second coordination information sent by the second base station in a second special symbol of a third subframe, wherein the second subframe is later than the first subframe and the third subframe; the first base station sends first data to the terminal by using the time-frequency resource block. The first base station and the second base station can directly utilize the subframes in the air interface resources to mutually send the coordination information without utilizing other forwarding equipment for forwarding, so that the negotiation speed between the first base station and the second base station is higher, the first base station and the second base station can more quickly jointly send the first data and the second data to the terminal, and the transmission delay of the first base station and the second base station for jointly sending the data to the terminal is reduced.

Description

Communication method and device
Technical Field
The embodiment of the application relates to the technical field of communication, in particular to a communication method and device.
Background
At present, in the process of deploying a base station, signal overlapping areas generally exist in signal coverage areas of two adjacent base stations, and a terminal located in the signal overlapping areas may receive a useful signal of a main base station and an interference signal of an auxiliary base station at the same time, which may cause poor signal receiving quality of the terminal located in the signal overlapping areas, and affect experience on a network.
In order to improve the quality of signals received by the terminal, Joint Transmission (JT) technology may simultaneously provide signals to the terminal through a primary base station and a secondary base station, so that the primary base station and the secondary base station transmit data provided by a server to the terminal.
Before the main base station and the secondary base station transmit data to the terminal through the joint transmission technology, the main base station and the secondary base station need to transmit coordination information to each other for negotiation. In the process that the main base station sends the coordination information to the auxiliary base station, the main base station can send the coordination information to the auxiliary base station only by utilizing a plurality of forwarding devices for forwarding; similarly, in the process of sending the coordination information to the main base station, the secondary base station also needs to use multiple forwarding devices to forward the coordination information to the main base station.
Therefore, in the process of sending the coordination information by the main base station and the secondary base station, multiple forwarding devices are needed to be used for forwarding, so that the transmission delay of the data jointly sent by the main base station and the secondary base station to the terminal is increased.
Disclosure of Invention
The embodiment of the application provides a communication method and device, which can reduce transmission delay in the process of sending coordination information between a first base station and a second base station.
The embodiment of the application is realized as follows:
in a first aspect, an embodiment of the present application provides a communication method, where the method includes: a first base station receives first data sent by a server; the first base station sends first coordination information to the second base station in a first special symbol of a first subframe, and the first coordination information indicates that the second base station reserves a first number of time-frequency resource blocks in a second subframe; the first base station receives second coordination information sent by the second base station in a second special symbol of a third subframe, the second coordination information indicates that the second base station reserves a first number of time-frequency resource blocks at a 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 first data to the terminal by using the time-frequency resource block.
In the first aspect, the first base station and the second base station may directly utilize the subframes in the air interface resource to send the coordination information to each other, and do not need to utilize other forwarding devices for forwarding, so that the negotiation speed between the first base station and the second base station is faster, and the first base station and the second base station may send the first data and the second data to the terminal jointly more quickly, thereby reducing the transmission delay of the first base station and the second base station sending data to the terminal jointly.
In one possible implementation manner, 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 includes: the first base station determines a 2 xi-1 special symbol in a target time period as a first special symbol set, i is a positive integer, the target time period at least comprises a first subframe and a third subframe, the first special symbol set comprises at least one first special symbol, the at least one first special symbol comprises the first special symbol of the first subframe, and the at least one first special symbol is used for the first base station to send first coordination information to the second base station.
In one possible implementation manner, 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 includes: the first base station determines a 2 x i-th special symbol in the target time period as a second special symbol set, the second special symbol set comprises at least one second special symbol, the at least one second special symbol comprises a second special symbol of a third subframe, the at least one second special symbol is used for the second base station to send second coordination information or third coordination information to the first base station, and the third coordination information indicates that the second base station rejects the indication of the first coordination information; the first base station transmits the second special symbol set to the second base station.
In order to avoid that the first base station or the second base station transmits and receives the coordination information in one special symbol, the first base station may determine a 2 × i-1 special symbol in the target time period as a first special symbol set, and determine a 2 × i special symbol in the target time period as a second special symbol set, so that the first base station transmits the first coordination information to the second base station by using at least one first special symbol in the first special symbol set, and the second base station transmits the second coordination information or the third coordination information to the first base station by using at least one second special symbol in the second special symbol set. Therefore, the embodiment can ensure that the first base station or the second base station only transmits the coordination information or only receives the coordination information in one special symbol, thereby avoiding the problem of signal interference.
In a second aspect, an embodiment of the present application provides a communication method, where the method includes: the second base station receives second data sent by the server; the second base station receives first coordination information sent by the first base station in a first special symbol of a first subframe, and the first coordination information indicates that the second base station reserves a first number of time-frequency resource blocks in a second subframe; the second base station sends second coordination information to the first base station in a second special symbol of a third subframe, the second coordination information indicates that the second base station reserves a first number of time-frequency resource blocks at a first time-frequency position in the second subframe, and the second subframe is later than the first subframe and the third subframe; and the second base station sends second data to the terminal by using the time-frequency resource block.
In the second aspect, the first base station and the second base station may directly utilize the subframes in the air interface resource to send the coordination information to each other, and do not need to utilize other forwarding devices for forwarding, so that the negotiation speed between the first base station and the second base station is faster, and the first base station and the second base station may send the first data and the second data to the terminal jointly more quickly, thereby reducing the transmission delay of the first base station and the second base station sending data to the terminal jointly.
In one 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: the second base station determines a 2 × i-th special symbol in the target time period as a second special symbol set, i is a positive integer, the target time period at least includes a first subframe and a third subframe, the second special symbol set includes at least one second special symbol, the at least one second special symbol includes a second special symbol of the third subframe, the at least one second special symbol is used for the second base station to send second coordination information or third coordination information to the first base station, and the third coordination information indicates that the second base station rejects the indication of the first coordination information.
In one 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: the second base station determines a 2 xi-1 special symbol in the target time period as a first special symbol set, wherein the first special symbol set comprises at least one first special symbol, the at least one first special symbol comprises a first special symbol of a first subframe, and the at least one first special symbol is used for the first base station to send first coordination information to the second base station; the second base station sends the first special symbol set to the first base station.
In order to avoid that the first base station or the second base station sends and receives the 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, and determine the 2 × i special symbol in the target time period as the second special symbol set, so that the first base station sends the first coordination information to the second base station by using at least one first special symbol in the first special symbol set, and the second base station sends the second coordination information or the third coordination information to the first base station by using at least one second special symbol in the second special symbol set. Therefore, the embodiment can ensure that the first base station or the second base station only transmits the coordination information or only receives the coordination information in one special symbol, thereby avoiding the problem of signal interference.
In a third aspect, an embodiment of the present application provides a base station, including: the receiving module is used for receiving first data sent by the server; a sending module, configured to send first coordination information to a second base station in a first special symbol of a first subframe, where the first coordination information indicates that a first number of time-frequency resource blocks are reserved in the second subframe by the second base station; the receiving module is further configured to receive second coordination information sent by the second base station in a second special symbol of the third subframe, where the second coordination information indicates that the second base station reserves a first number of time-frequency resource blocks in a first time-frequency position in the second subframe, and the second subframe is later than the first subframe and the third subframe; and the sending module is also used for sending the first data to the terminal by using the time-frequency resource block.
In a possible implementation manner, the base station further includes a determination module. The determining module is configured to determine a 2 × i-1 special symbol in a target time period as a first special symbol set, i is a positive integer, the target time period at least includes a first subframe and a 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 special symbol is used for 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 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, the at least one second special symbol includes a second special symbol of a third subframe, the at least one second special symbol is used for the second base station to send second coordination information or 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; and the sending module is further used for sending the second special symbol set to the second base station.
In a fourth aspect, an embodiment of the present application provides a base station, including: the receiving module is used for receiving second data sent by the server; the receiving module is further configured to receive first coordination information sent by the first base station in a first special symbol of the first subframe, where the first coordination information indicates that the second base station reserves a first number of time-frequency resource blocks in a second subframe; a sending module, configured to send second coordination information to the first base station in a second special symbol of a third subframe, where the second coordination information indicates that a first number of time-frequency resource blocks are reserved in a first time-frequency position in the second subframe by the second base station, and the second subframe is later than the first subframe and the third subframe; and the sending module is further used for sending second data to the terminal by using the time-frequency resource block.
In a possible implementation manner, the base station further includes a determination module. A determining module, configured to determine a 2 × i-th special symbol in a target time period as a second special symbol set, where i is a positive integer, the target time period at least includes a first subframe and a third subframe, the second special symbol set includes at least one second special symbol, the at least one second special symbol includes a second special symbol of the third subframe, the at least one second special symbol is used for a second base station to send second coordination information or third coordination information to the first base station, and the third coordination information indicates that the second base station rejects the indication of the first coordination information.
In a possible implementation manner, 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, the at least one first special symbol includes a first special symbol of a first subframe, and the at least one first special symbol is used for the first base station to send the first coordination information to the second base station; and the sending module is further used for sending the first special symbol set to the first base station.
In a fifth aspect, an embodiment of the present application provides a base station, which includes a baseband processing unit BBU, a radio remote unit RRU, a coupling circuit, and an antenna. The BBU is used for receiving first data sent by the server, and sending first coordination information to the second base station in a first special symbol of the first subframe by using the RRU, the coupling circuit and the antenna, wherein the first coordination information indicates that the second base station reserves a first number of time-frequency resource blocks in the second subframe; receiving second coordination information sent by a second base station in a second special symbol of a third subframe by using an RRU, a coupling circuit and an antenna, wherein the second coordination information indicates that the second base station reserves a first number of time-frequency resource blocks at a first time-frequency position in the second subframe, and the second subframe is later than the first subframe and the third subframe; and sending first data to the terminal by using the RRU, the coupling circuit and the antenna through a time-frequency resource block.
In a sixth aspect, an embodiment of the present application provides a base station, which includes a baseband processing unit BBU, a radio remote unit RRU, a coupling circuit, and an antenna. The BBU is used for receiving second data sent by the server, and receiving first coordination information sent by the first base station in a first special symbol of a first subframe by using the RRU, the coupling circuit and the antenna, wherein the first coordination information indicates that a first number of time-frequency resource blocks are reserved in a second subframe by the second base station; sending second coordination information to the first base station in a second special symbol of a third subframe by using the RRU, the coupling circuit and the antenna, wherein the second coordination information indicates that a first number of time-frequency resource blocks are reserved in a first time-frequency position in the second subframe by the second base station, and the second subframe is later than the first subframe and the third subframe; and sending second data to the terminal by using the RRU, the coupling circuit and the antenna by using the time-frequency resource block.
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 the software code stored in the memory and to perform the method as in the first aspect and its various implementations.
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 the software code stored in the memory and to perform the method as in the second aspect and its various implementations.
In a ninth aspect, embodiments of the present application provide a computer-readable storage medium, which stores instructions that, when executed on a computer or a processor, cause the computer or the processor to execute the method of the first aspect or any possible implementation manner of the first aspect.
In a tenth aspect, embodiments of the present application provide a computer-readable storage medium having stored therein instructions, which, when executed on a computer or a processor, cause the computer or the processor to execute the method of the second aspect or any possible implementation manner of the second aspect.
In an eleventh aspect, embodiments of the present application provide a computer program product containing instructions, which when run on a computer or a processor, cause the computer or the processor to perform the method of the first aspect or any of the possible implementations of the first aspect.
In a twelfth aspect, embodiments of the present application provide a computer program product containing instructions that, when run on a computer or a processor, cause the computer or the processor to perform the method of the second aspect or any of the possible implementations of the second aspect.
Drawings
Fig. 1 is a schematic view of a jointly transmitted scene according to an embodiment of the present application;
fig. 2 is a schematic structural diagram of a radio frame according to an embodiment of the present disclosure;
fig. 3 is a schematic structural diagram of a time-frequency resource block in one subframe in fig. 2;
fig. 4 is a flowchart illustrating a communication method according to an embodiment of the present application;
fig. 5 is a flowchart illustrating another communication method according to an embodiment of the present application;
fig. 6 is a flowchart illustrating another communication method provided in the embodiment of the present application;
fig. 7 is a flowchart illustrating 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 provided in the embodiment of the present application;
fig. 10 is a schematic diagram of another base station provided in the embodiment of the present application;
fig. 11 is a schematic diagram of another base station provided in the embodiment of the present application.
Detailed Description
Referring to fig. 1 to fig. 3, fig. 1 is a schematic view of a scenario of joint transmission provided in an embodiment of the present application, fig. 2 is a schematic view of a structure of a radio frame provided in an embodiment of the present application, and fig. 3 is a schematic view of a structure of a time-frequency resource block in a subframe in fig. 2.
The apparatus presented in fig. 1 comprises a server 1, a first base station 2, a second base station 3 and a terminal 4. Wherein, 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.
With reference to fig. 1 to 3, a communication process between the server 1, the first base station 2, the second base station 3 and the terminal 4, which mainly involves a negotiation process between the first base station 2 and the second base station 3, will be briefly described.
First, when the server 1 needs to send target data to the terminal 4, the server 1 splits the target data into first data and second data, sends the first data to the first base station 2, and sends the second data to the second base station 3. I.e. the server 1 instructs the first base station 2 and the second base station 3, respectively, to jointly transmit 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 first coordination information to the second base station 3 within a guard interval (GP) of the subframe 1, where the first coordination information indicates that the second base station 3 reserves 50 time-frequency resource blocks within the subframe 9.
Secondly, after the second base station 3 receives the first coordination information sent by the first base station 2 in the guard interval of the subframe 1, the second base station 3 may determine whether the available number of the 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 the time-frequency resource blocks in the subframe 9 is 100, the time-frequency resource blocks that can be used in the subframe 9 are the 1 st to 50 th time-frequency resource blocks, and the time-frequency resource blocks that cannot be used in the subframe 9 are the 51 st to 100 th time-frequency resource blocks. The second base station 3 determines that the available number of the time frequency resource blocks in the subframe 9 is 50, and the second base station 3 determines the 1 st to 50 th time frequency resource blocks in the subframe 9 as the first time frequency position.
And thirdly, the second base station 3 sends second coordination information to the first base station 2 in the guard interval of the subframe 6, and the second coordination information indicates that the second base station 3 reserves 50 time-frequency resource blocks at the first time-frequency position in the subframe 9, wherein the first time-frequency position is from the 1 st time-frequency resource block to the 50 th 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, so that 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 3, the subframe 1 and the subframe 6 belong to a special subframe having a guard interval, and the guard interval in the subframe 1 and the guard interval in the subframe 6 are used for transmitting coordination information mutually transmitted between the first base station 2 and the second base station 3; the subframe 9 belongs to a normal subframe without a guard interval, and a time-frequency resource block in the subframe 9 is used for transmitting first data and second data respectively sent by the first base station 2 and the second base station 3 to the terminal 4. Of course, for the embodiments shown in fig. 1 to fig. 3, the time-frequency resource blocks in the sub-frames 7 and 8 in fig. 2 may also transmit the first data and the second data respectively transmitted by the first base station 2 and the second base station 3 to the terminal 4.
In the embodiments shown in fig. 1 to fig. 3, the first base station 2 and the second base station 3 may directly utilize subframes in air interface resources to send coordination information to each other, and do not need to utilize other forwarding devices for forwarding, so that the negotiation speed between the first base station 2 and the second base station 3 is faster, and the first base station 2 and the second base station 3 may send the first data and the second data to the terminal 4 jointly more quickly, thereby reducing the transmission delay when the first base station 2 and the second base station 3 jointly send data to the terminal 4.
In the embodiments shown in fig. 1 to fig. 3, a radio frame structure of a fourth generation mobile communication technology, that is, a radio frame structure of a Time Division Duplex (TDD) type is used in the embodiments of the present application, and other types of radio frame structures may also be used in the embodiments of the present application. For example, the embodiment of the present application may also use a radio frame structure of a fifth generation mobile communication technology, in which a flexible symbol (flexible) in a subframe of the radio frame structure may be used to transmit coordination information transmitted between the first base station 2 and the second base station 3, the flexible symbol may not exist in one subframe of the radio frame structure, and 1 or more flexible symbols may also exist in one subframe of the radio frame structure.
Fig. 1 to fig. 3 illustrate communication procedures among the server 1, the first base station 2, the second base station 3 and the terminal 4, and the communication method provided in the embodiment of the present application is described in detail below.
Referring to fig. 4, fig. 4 is a flowchart illustrating a communication method according to an embodiment of the present disclosure. The communication method shown in fig. 4 can reduce the transmission delay of the joint transmission of data from the first base station and the second base station to the terminal. The method shown in fig. 4 comprises 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 data to be jointly transmitted into first data and second data with the same size, and transmits the first data and the second data to the first base station and the second base station, so that the first base station and the second base station can jointly transmit 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 in 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 first coordination information to the second base station in a first special symbol of the first subframe, and the first coordination information indicates that the second base station reserves a first number of time-frequency resource blocks in a second subframe.
For example, please refer to the embodiments shown in fig. 1 to fig. 3, assuming that the first base station 2 determines that the first data occupies 50 time-frequency resource blocks of one subframe, then the first base station 2 determines that one subframe in which the first base station 2 and the second base station 3 jointly transmit 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 transmits the first coordination information to the second base station 3 in the guard interval of the subframe 1, and the first coordination information indicates that the second base station 3 reserves 50 time-frequency resource blocks in the subframe 9.
The first special symbol mentioned in step S12 may be a guard interval in one subframe of a radio frame structure of the fourth generation mobile communication technology, or may be a flexible symbol in one subframe of a radio frame structure of the fifth generation mobile communication technology.
Step S13, the second base station sends the second coordination information to the first base station in the second special symbol of the third subframe.
After 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 second base station can analyze the first coordination information, and the second base station can know that the first coordination information indicates that the second base station reserves a first number of time-frequency resource blocks in the second subframe. Then, the second base station reserves a first number of time-frequency resource blocks at a first time-frequency position in the second subframe according to the indication of the first coordination information, and the first time-frequency position in the second subframe represents the position of the first number of time-frequency resource blocks reserved by the second base station. After reserving the time-frequency resource blocks at the second base station, the second base station sends second coordination information to the first base station in a second special symbol of a third subframe, the second coordination information indicates that the second base station reserves a first number of time-frequency resource blocks at a first time-frequency position in the second subframe, and the second subframe is later than the first subframe and the third subframe.
For example, please refer to 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 reserves 50 time-frequency resource blocks within the subframe 9. After the second base station 3 receives the first coordination information sent by the first base station 2 in the guard interval of the subframe 1, the second base station 3 reserves the 1 st to 50 th time-frequency resource blocks in the subframe 9 according to the indication of the first coordination information, and the second base station 3 determines the 1 st to 50 th time-frequency resource blocks in the subframe 9 as the first time-frequency position. Then, the second base station 3 sends second coordination information to the first base station 2 within the guard interval of the subframe 6, and the second coordination information indicates that the second base station 3 reserves 50 time-frequency resource blocks at the first time-frequency position within the subframe 9, where the first time-frequency position is from the 1 st time-frequency resource block to the 50 th time-frequency resource block.
The second special symbol mentioned in step S13 may be a guard interval in a subframe of a radio frame structure of the fourth generation mobile communication technology, or may be a flexible symbol in a subframe of a radio frame structure of the fifth generation mobile communication technology.
Step S14, the first base station and the second base station jointly transmit the first data and the second data to the terminal using the first number of time-frequency resource blocks reserved in the first time-frequency position in the second subframe, respectively.
After the first base station receives the second coordination information sent by the second base station in the second special symbol of the third subframe, the first base station and the second base station negotiate successfully. The first base station and the second base station jointly transmit the first data and the second data to the terminal by using a first number of time-frequency resource blocks reserved at the first time-frequency position in the second subframe respectively.
For example, please refer to 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 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, so that 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 may directly utilize the subframes in the air interface resource to send the coordination information to each other, and do not need to utilize other forwarding devices for forwarding, so that the negotiation speed between the first base station and the second base station is faster, and the first base station and the second base station may send the first data and the second data to the terminal jointly more quickly, thereby reducing the transmission delay of the first base station and the second base station sending data to the terminal jointly.
Referring to fig. 5, fig. 5 is a flowchart illustrating another communication method according to an embodiment of the present disclosure. 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 further included before step S12 in fig. 2.
Step S21, the first base station determines the 2 x i-1 special symbol in the target time period as the first special symbol set.
The first base station transmits first coordination information to the second base station through the first special symbol set, wherein i is a positive integer, the target time period at least comprises a first subframe and a third subframe, the first special symbol set comprises at least one first special symbol, the at least one first special symbol comprises the first special symbol of the first subframe, and the at least one first special symbol is used for the first base station to transmit the first coordination information to the second base station.
For example, please refer to the embodiments shown in fig. 1 to 3, it is assumed that the target time period includes a subframe 1 and a subframe 6, a guard interval of the subframe 1 is the 1 st special symbol, and a guard interval of the subframe 6 is the 2 nd special symbol. The first base station determines the 1 st special symbol in the target time period as a first special symbol set, where the first special symbol set includes the 1 st special symbol, that is, the first special symbol set includes a guard interval of subframe 1, and the special symbols in the first special symbol set are used for 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 symbol in the target time period as the second special symbol set.
The second special symbol set comprises at least one second special symbol, the at least one second special symbol comprises a second special symbol of a third subframe, the at least one second special symbol is used for the second base station to send second coordination information or 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 example, please refer to the embodiments shown in fig. 1 to 3, it is assumed that the target time period includes a subframe 1 and a subframe 6, a guard interval of the subframe 1 is the 1 st special symbol, and a guard interval of the subframe 6 is the 2 nd special symbol. The first base station determines the 2 nd special symbol in the target time period as a second special symbol set, where the second special symbol set includes the 2 nd special symbol, that is, the second special symbol set includes a guard interval of a subframe 6, and the special symbol in the second special symbol set is 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-th special symbol in the target time period as the second special symbol set, the first base station needs to send the second special symbol set to the second base station in order to ensure that the second base station can send the second coordination information or the third coordination information by using the special symbols in the second special symbol set.
In the embodiment shown in fig. 5, if the first base station or the second base station both transmits and receives coordination information within a particular symbol, then a problem of signal interference may occur within the particular symbol. In order to avoid that the first base station or the second base station sends and receives the 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, and determine the 2 × i special symbol in the target time period as the second special symbol set, so that the first base station sends the first coordination information to the second base station by using at least one first special symbol in the first special symbol set, and the second base station sends the second coordination information or the third coordination information to the first base station by using at least one second special symbol in the second special symbol set. Therefore, the embodiment shown in fig. 5 can ensure that the first base station or the second base station only transmits the coordination information or only receives the coordination information within one special symbol, so that the problem of signal interference can be avoided.
Referring to fig. 6, fig. 6 is a flowchart illustrating another communication method according to an embodiment of the present disclosure. 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 further included before step S12 in fig. 2.
Step S31, the second base station determines the 2 × i special symbol in the target time period as the second special symbol set.
Wherein i is a positive integer, the target time period at least includes a first subframe and a third subframe, the second special symbol set includes at least one second special symbol, the at least one second special symbol includes a second special symbol of the third subframe, the at least one second special symbol is used for the second base station to send second coordination information or 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 example, please refer to the embodiments shown in fig. 1 to 3, it is assumed that the target time period includes a subframe 1 and a subframe 6, a guard interval of the subframe 1 is the 1 st special symbol, and a guard interval of the subframe 6 is the 2 nd special symbol. The second base station determines the 2 nd special symbol in the target time period as a second special symbol set, where the second special symbol set includes the 2 nd special symbol, that is, the second special symbol set includes a guard interval of a subframe 6, and the special symbol in the second special symbol set is 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 x i-1 special symbol in the target time period as the first special symbol set.
The first special symbol set comprises at least one first special symbol, the at least one first special symbol comprises a first special symbol of a first subframe, and the at least one first special symbol is used for a first base station to send first coordination information to a second base station.
For example, please refer to the embodiments shown in fig. 1 to 3, it is assumed that the target time period includes a subframe 1 and a subframe 6, a guard interval of the subframe 1 is the 1 st special symbol, and a guard interval of the subframe 6 is the 2 nd special symbol. The second base station determines the 1 st special symbol in the target time period as a first special symbol set, where the first special symbol set includes the 1 st special symbol, that is, the first special symbol set includes a guard interval of subframe 1, and the special symbols in the first special symbol set are used for the first base station 2 to send the first coordination information to the second base station 3.
And 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 symbol in the target time period as the first special symbol set, the second base station needs to send the first special symbol set to the first base station in order to ensure that the first base station can send the first coordination information by using the special symbols in the first special symbol set.
In the embodiment shown in fig. 6, if the first base station or the second base station both transmits and receives coordination information within a particular symbol, then a problem of signal interference may occur within the particular symbol. In order to avoid that the first base station or the second base station sends and receives the 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, and determine the 2 × i special symbol in the target time period as the second special symbol set, so that the first base station sends the first coordination information to the second base station by using at least one first special symbol in the first special symbol set, and the second base station sends the second coordination information or the third coordination information to the first base station by using at least one second special symbol in the second special symbol set. Therefore, the embodiment shown in fig. 6 can ensure that the first base station or the second base station only transmits the coordination information or only receives the coordination information within one special symbol, so that the problem of signal interference can be avoided.
Referring to fig. 7, fig. 7 is a flowchart illustrating another communication method according to an embodiment of the present disclosure. The communication method shown in fig. 7 can reduce the transmission delay of the joint transmission of data from the first base station and the second base station to the terminal. The method shown in fig. 7 comprises 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.
Wherein, step S41 is the same as step S11 in fig. 4, and the explanation of step S11 can be referred to the embodiment shown in fig. 4 for step S41.
Step S42, the first base station sends the first coordination information to the second base station in the first special symbol of the first subframe.
Wherein, step S42 is the same as step S12 in fig. 4, and the explanation of step S12 can be referred to the embodiment shown in fig. 4 for step S42.
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 so, steps S44-S46 are performed, otherwise, step S47 is performed.
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.
And step S45, the second base station sends the second coordination information to the first base station in the second special symbol of the third subframe.
Step S46, the first base station and the second base station jointly transmit the first data and the second data to the terminal using the first number of time-frequency resource blocks reserved in the first time-frequency position in the second subframe, respectively.
And the second coordination information indicates that the second base station reserves a first number of time-frequency resource blocks at a first time-frequency position in a second subframe, wherein the second subframe is later than the first subframe and a third subframe.
For better understanding of steps S44 to S46, the following description is made in detail by way of example.
For example, please refer to the embodiments shown in fig. 1 to 3, it is assumed that the first coordination information indicates that the second base station 3 reserves 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 in the guard interval of the subframe 1, the second base station 3 may determine 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 the time-frequency resource blocks in the subframe 9 is 100, the time-frequency resource blocks that can be used in the subframe 9 are the 1 st to 50 th time-frequency resource blocks, and the time-frequency resource blocks that cannot be used in the subframe 9 are the 51 st to 100 th time-frequency resource blocks. The second base station 3 determines that the available number of the time frequency resource blocks in the subframe 9 is 50, and the second base station 3 determines the 1 st to 50 th time frequency resource blocks in the subframe 9 as the first time frequency position. Then, the second base station 3 sends second coordination information to the first base station 2 within the guard interval of the subframe 6, and the second coordination information indicates that the second base station 3 reserves 50 time-frequency resource blocks at the first time-frequency position within the subframe 9, where the first time-frequency position is from the 1 st time-frequency resource block to the 50 th 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, so that 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 third coordination information to the first base station in the second special symbol of the third subframe, where the third coordination information indicates that the second base station rejects the indication of the first coordination information.
For better understanding of step S47, the following description is made in detail by way of example.
For example, please refer to the embodiments shown in fig. 1 to 3, it is assumed that the first coordination information indicates that the second base station 3 reserves 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 in the guard interval of the subframe 1, the second base station 3 may determine 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 the time-frequency resource blocks in the subframe 9 is 100, the time-frequency resource blocks that can be used in the subframe 9 are the 1 st to 40 th time-frequency resource blocks, and the time-frequency resource blocks that cannot be used in the subframe 9 are the 41 st to 100 th time-frequency resource blocks. The second base station 3 determines that the available number of the time-frequency resource blocks in the subframe 9 is 40, which indicates that the second base station 3 cannot reserve 50 time-frequency resource blocks in the subframe 9, the second base station 3 sends third coordination information to the first base station 2 in the guard interval of the subframe 6, and the third coordination information indicates that the second base station 3 rejects the indication of the first coordination information.
In the embodiment shown in fig. 7, the first base station and the second base station may directly utilize the subframes in the air interface resource to send the coordination information to each other, and do not need to utilize other forwarding devices for forwarding, so that the negotiation speed between the first base station and the second base station is faster, and the first base station and the second base station may send the first data and the second data to the terminal jointly more quickly, thereby reducing the transmission delay of the first base station and the second base station sending data to the terminal jointly. And the second base station judges whether the available number of the time-frequency resource blocks in the second subframe is larger than or equal to the first number, if so, the second base station agrees to jointly transmit data to the terminal with the first base station in the second subframe, otherwise, the second base station refuses to jointly transmit data to the terminal with the first base station in the second subframe.
Referring to fig. 8, fig. 8 is a schematic diagram of a base station according to an embodiment of the present disclosure. The base station comprises the following modules:
the receiving module 11 is configured to receive first data sent by a server. For a detailed implementation, please refer to the detailed description corresponding to step S11 in the embodiment of the method shown in fig. 4.
A sending module 12, configured to send first coordination information to the second base station in the first special symbol of the first subframe, where the first coordination information indicates that the second base station reserves a first number of time-frequency resource blocks in the second subframe. For a detailed implementation, please refer to the detailed description corresponding to step S12 in the embodiment of the method shown in fig. 4.
The receiving module 11 is further configured to receive second coordination information sent by the second base station in a second special symbol of the third subframe, where the second coordination information indicates that the second base station reserves a first number of time-frequency resource blocks in a first time-frequency position in the second subframe, and the second subframe is later than the first subframe and the third subframe. For a detailed implementation, please refer to the detailed description corresponding to step S13 in the embodiment of the method shown in fig. 4.
The sending module 12 is further configured to send the first data to the terminal using the time-frequency resource block. For a detailed implementation, please refer to the detailed description corresponding to step S14 in the embodiment of the method shown in fig. 4.
In an implementable embodiment, the base station may further include a determining module 13, the determining module 13 is configured to determine the 2 × i-1 special symbol in the target time period as a first special symbol set, 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, 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 for the first base station to transmit the first coordination information to the second base station. For a detailed implementation, please refer to the detailed description corresponding to step S21 in the embodiment of the method shown in fig. 5.
In an implementable embodiment, the determining module 13 is further configured to determine the 2 × i special symbols in the target time period as a second special symbol set, the second special symbol set including at least one second special symbol, the at least one second special symbol including a second special symbol of a third subframe, the at least one second special symbol being used for the second base station to transmit second coordination information or third coordination information to the first base station, the third coordination information indicating an indication that the second base station rejects 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 detailed implementation, please refer to the detailed description corresponding to step S22 and step S23 in the embodiment of the method shown in fig. 5.
Referring to fig. 9, fig. 9 is a schematic diagram of another base station according to an embodiment of the present disclosure. The base station comprises the following modules:
and the receiving module 21 is configured to receive the second data sent by the server. For a detailed implementation, please refer to the detailed description corresponding to step S11 in the embodiment of the method shown in fig. 4.
The receiving module 21 is further configured to receive first coordination information sent by the first base station in the first special symbol of the first subframe, where the first coordination information indicates that the second base station reserves a first number of time-frequency resource blocks in the second subframe. For a detailed implementation, please refer to the detailed description corresponding to step S12 in the embodiment of the method shown in fig. 4.
A sending module 22, configured to send second coordination information to the first base station in a second special symbol of a third subframe, where the second coordination information indicates that the second base station reserves a first number of time-frequency resource blocks in a first time-frequency position in the second subframe, and the second subframe is later than the first subframe and the third subframe. For a detailed implementation, please refer to the detailed description corresponding to step S13 in the embodiment of the method shown in fig. 4.
The sending module 22 is further configured to send the second data to the terminal using the time-frequency resource blocks. For a detailed implementation, please refer to the detailed description corresponding to step S14 in the embodiment of the method shown in fig. 4.
In an implementable embodiment, the base station may further include a determining module 23, the determining module 23 is configured to determine a 2 × i special symbol in the target time period as a second special symbol set, i is a positive integer, the target time period includes at least a first subframe and a third subframe, the second special symbol set includes at least one second special symbol, the at least one second special symbol includes a second special symbol of the third subframe, the at least one second special symbol is used for the second base station to transmit second coordination information or 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 detailed implementation, please refer to the detailed description corresponding to step S31 in the embodiment of the method shown in fig. 6.
In an implementable embodiment, the determining module 23 is further configured to determine the 2 × i-1 special symbol in the target time period as a first special symbol set, the first special symbol set including at least one first special symbol, the at least one first special symbol including a first special symbol of a first subframe, the at least one first special symbol being used for the first base station to transmit the first coordination information to the second base station; the sending module 22 is further configured to send the first special symbol set to the first base station. For a detailed implementation, please refer to the detailed description corresponding to step S32 and step S33 in the embodiment of the method shown in fig. 6.
Referring to fig. 10, fig. 10 is a schematic diagram of another base station according to an embodiment of the present disclosure. In the embodiment shown in fig. 10, the base station includes a Base Band 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 first data sent by the server, and send first coordination information to the second base station in a first special symbol of a first subframe by using the radio remote unit 32, the coupling circuit 33, and the antenna 34, where the first coordination information indicates that the second base station reserves a first number of resource block time-frequencies in a second subframe; receiving second coordination information sent by the second base station in a second special symbol of a third subframe by using the radio remote unit 32, the coupling circuit 33 and the antenna 34, wherein the second coordination information indicates that the second base station reserves a first number of time-frequency resource blocks at a first time-frequency position in the second subframe, and the second subframe is later than the first subframe and the third subframe; the first data is transmitted to the terminal using time-frequency resource blocks by using the radio remote unit 32, the coupling circuit 33 and the antenna 34.
In the embodiment shown in fig. 10, when the base station sends the first coordination information or the first data to the outside of the second base station or the terminal, the baseband processing unit 31 of the base station transmits the baseband signal with the first coordination information or the first data to the remote radio unit 32, the remote radio unit 32 converts the baseband signal into a radio frequency signal, the remote radio unit 32 sends the radio frequency signal to the coupling circuit 33, the coupling circuit 33 performs filtering processing on the radio frequency signal, and the coupling circuit 33 sends the radio frequency signal after the filtering processing to the second base station or the 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 a radio frequency signal with the first data or the second coordination information sent by the server or the second base station, the antenna 34 sends the radio frequency signal to the coupling circuit 33, the coupling circuit 33 performs filtering processing on the radio frequency signal, the coupling circuit 33 sends the radio frequency signal after the filtering processing to the remote radio unit 32, the remote radio unit 32 converts the radio frequency signal into a baseband signal, and the remote radio unit 32 sends the baseband signal to the baseband processing unit 31.
In the embodiment shown in fig. 10, please refer to the detailed description of the method embodiment shown in fig. 4 corresponding to steps S11 to S14 regarding the execution process of the base station.
Referring to fig. 11, fig. 11 is a schematic diagram of another base station according to an embodiment of the present disclosure. In the embodiment shown in fig. 11, the base station includes a baseband processing unit 41, a radio 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 second data sent by the server, and receive first coordination information sent by the first base station in a first special symbol of a first subframe by using the radio remote unit 42, the coupling circuit 43, and the antenna 44, where the first coordination information indicates that a first number of time-frequency resource blocks are reserved by a second base station in a second subframe; sending second coordination information to the first base station in a second special symbol of a third subframe by using the radio remote unit 42, the coupling circuit 43 and the antenna 44, wherein the second coordination information indicates that a first number of time-frequency resource blocks are reserved in a first time-frequency position in the second subframe by the second base station, and the second subframe is later than the first subframe and the third subframe; the second data is transmitted to the terminal using the time-frequency resource blocks by using the radio remote unit 42, the coupling circuit 43 and the antenna 44.
In the embodiment shown in fig. 11, when the base station sends the second coordination information or the second data to the outside of the first base station or the terminal, the baseband processing unit 41 of the base station transmits the baseband signal with the second coordination information or the second data to the remote radio unit 42, the remote radio unit 42 converts the baseband signal into a radio frequency signal, the remote radio 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 sends the radio frequency signal after the filtering processing to the first base station or the 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 a radio frequency signal with the second data or the first coordination information sent by the server or the first base station, the antenna 44 sends the radio frequency signal to the coupling circuit 43, the coupling circuit 43 performs filtering processing on the radio frequency signal, the coupling circuit 43 sends the radio frequency signal after the filtering processing to the remote radio unit 42, the remote radio unit 42 converts the radio frequency signal into a baseband signal, and the remote radio unit 42 sends the baseband signal to the baseband processing unit 41.
In the embodiment shown in fig. 11, please refer to the detailed description of the method embodiment shown in fig. 4 corresponding to steps S11 to S14 regarding the execution process of the base station.
In the above embodiments, the implementation may be wholly or partially realized by software, hardware, firmware, or any combination thereof. When implemented in software, 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 loaded and executed on a computer, cause the processes or functions described in accordance with the embodiments of the invention to occur, in whole or in part. The computer may be a general purpose computer, a special purpose computer, a network of computers, or other programmable device. The computer instructions may be stored in a computer readable storage medium or transmitted from one computer readable storage medium to another, for example, from one website site, computer, server, or data center to another website site, computer, server, or data center via wired (e.g., coaxial cable, fiber optic, Digital Subscriber Line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.). The computer-readable storage medium can be any available medium that can be accessed by a computer or a data storage device, such as a server, a data center, etc., that incorporates one or more of the available media. The usable medium may be a magnetic medium (e.g., floppy Disk, hard Disk, magnetic tape), an optical medium (e.g., DVD), or a semiconductor medium (e.g., Solid State Disk (SSD)), among others.

Claims (14)

1. A method of communication, the method comprising:
a first base station receives first data sent by a server;
the first base station sends first coordination information to a second base station in a first special symbol of a first subframe, and the first coordination information indicates that a first number of time-frequency resource blocks are reserved in a second subframe by the second base station;
the first base station receives second coordination information sent by the second base station in a second special symbol of a third subframe, wherein the second coordination information indicates that the second base station reserves the first number of time-frequency resource blocks at a first time-frequency position in the second subframe, and the second subframe is later than the first subframe and the third subframe;
and the first base station sends the first data to a terminal by using the time frequency resource block.
2. The communication method according to claim 1, wherein before the first base station transmits 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 a 2 xi-1 special symbol in a target time period as a first special symbol set, wherein i is a positive integer, the target time period at least comprises the first subframe and the third subframe, the first special symbol set comprises at least one first special symbol, the at least one first special symbol comprises the first special symbol of the first subframe, and the at least one first special symbol is used for the first base station to send the first coordination information to the second base station.
3. The communication method according to claim 2, wherein before the first base station transmits 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 determining a 2 × i special symbol within the target time period as a second special symbol set, the second special symbol set including at least one second special symbol, the at least one second special symbol including the second special symbol of the third subframe, the at least one second special symbol being used for the second base station to send the second coordination information or third coordination information to the first base station, the third coordination information indicating an indication that the second base station rejects the first coordination information;
and the first base station sends the second special symbol set to the second base station.
4. A method of communication, the method comprising:
the second base station receives second data sent by the server;
the second base station receives first coordination information sent by the first base station in a first special symbol of a first subframe, and the first coordination information indicates that the second base station reserves a first number of time-frequency resource blocks in a second subframe;
the second base station sends second coordination information to the first base station in a second special symbol of a third subframe, wherein the second coordination information indicates that the second base station reserves the first number of time-frequency resource blocks at a first time-frequency position in the second subframe, and the second subframe is later than the first subframe and the third subframe;
and the second base station sends the second data to a terminal by using the time frequency resource block.
5. The communication method according to claim 4, wherein before the second base station receives the first coordination information transmitted by the first base station in the first special symbol of the first subframe, the method further comprises:
the second base station determines a 2 × i-th special symbol in a target time period as a second special symbol set, where i is a positive integer, the target time period at least includes the first subframe and the third subframe, 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, the at least one second special symbol is used for the second base station to send the second coordination information or third coordination information to the first base station, and the third coordination information indicates that the second base station rejects the indication of the first coordination information.
6. The communication method according to claim 5, wherein before the second base station receives the first coordination information transmitted by the first base station in the first special symbol of the first subframe, the method further comprises:
the second base station determines a 2 xi-1 special symbol in the target time period as a first special symbol set, wherein the first special symbol set comprises at least one first special symbol, the at least one first special symbol comprises the first special symbol of the first subframe, and the at least one first special symbol is used for the first base station to send the first coordination information to the second base station;
and the second base station sends the first special symbol set to the first base station.
7. A base station, comprising:
the receiving module is used for receiving first data sent by the server;
a sending module, configured to send first coordination information to a second base station in a first special symbol of a first subframe, where the first coordination information indicates that a first number of time-frequency resource blocks are reserved in a second subframe by the second base station;
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 reserves the first number of time-frequency resource blocks in a 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 a terminal using the time-frequency resource block.
8. The base station of 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, the target time period at least includes the first subframe and 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 special symbol is used for the first base station to send the first coordination information to the second base station.
9. The base station of claim 8, wherein:
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, the at least one second special symbol includes the second special symbol of the third subframe, the at least one second special symbol is used for the second base station to send the second coordination information or 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 sending module is further configured to send the second special symbol set to the second base station.
10. A base station, comprising:
the receiving module is used for receiving second data sent by the 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 a first number of time-frequency resource blocks are reserved in a second subframe by the second base station;
a sending module, configured to send second coordination information to the first base station in a second special symbol of a third subframe, where the second coordination information indicates that the second base station reserves the first number of time-frequency resource blocks in a 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 second data to a terminal using the time-frequency resource block.
11. The base station of claim 10, further comprising:
a determining module, configured to determine a 2 × i-th special symbol in a target time period as a second special symbol set, where i is a positive integer, the target time period at least includes the first subframe and the third subframe, 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, the at least one second special symbol is used for the second base station to send the second coordination information or third coordination information to the first base station, and the third coordination information indicates that the second base station rejects the indication of the first coordination information.
12. The base station of 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 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 for 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.
13. A base station is characterized by comprising a base band 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 send first coordination information to a second base station within a first special symbol of a first subframe by using the RRU, the coupling circuit, and the antenna, where the first coordination information indicates that a first number of time-frequency resource blocks are reserved in the second subframe by the second base station; receiving second coordination information sent by the second base station in a second special symbol of a third subframe by using the RRU, the coupling circuit and the antenna, wherein the second coordination information indicates that the second base station reserves the first number of time-frequency resource blocks at a first time-frequency position in the second subframe, and the second subframe is later than the first subframe and the third subframe; and sending the first data to a terminal by using the RRU, the coupling circuit and the antenna by using the time frequency resource block.
14. A base station is characterized by comprising a base band 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 receive first coordination information sent by the first base station in a first special symbol of a first subframe by using the RRU, the coupling circuit, and the antenna, where the first coordination information indicates that a first number of time-frequency resource blocks are reserved in a second subframe by the second base station; sending second coordination information to the first base station in a second special symbol of a third subframe by using the RRU, the coupling circuit and the antenna, wherein the second coordination information indicates that the second base station reserves the first number of time-frequency resource blocks at a first time-frequency position in the second subframe, and the second subframe is later than the first subframe and the third subframe; and sending the second data to a terminal by using the RRU, the coupling circuit and the antenna by using the time frequency resource block.
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