CN109219063B

CN109219063B - Communication method and device between base stations and base station

Info

Publication number: CN109219063B
Application number: CN201710515810.4A
Authority: CN
Inventors: 柯颋; 胡丽洁; 刘建军; 童辉
Original assignee: China Mobile Communications Group Co Ltd; China Mobile Communications Ltd Research Institute
Current assignee: China Mobile Communications Group Co Ltd; China Mobile Communications Ltd Research Institute
Priority date: 2017-06-29
Filing date: 2017-06-29
Publication date: 2022-02-11
Anticipated expiration: 2037-06-29
Also published as: CN109219063A

Abstract

The invention provides a communication method, a device and a base station between base stations, wherein the communication method comprises the following steps: in a transmission time unit for uplink or downlink data transmission, sending a dedicated air interface signal of a first base station at a first time window, and intercepting a first air interface signal sent by a second base station at a second time window; the first air interface signal comprises a second air interface signal sensed by the second base station and a dedicated air interface signal of the second base station. The embodiment of the invention solves the problems that a new interference type is easy to generate in a dynamic TDD scene and the measurement result of the downlink channel quality is out of date or invalid because the uplink and downlink transmission directions of the adjacent region can not be identified in the prior art.

Description

Communication method and device between base stations and base station

Technical Field

The present invention relates to the field of communications technologies, and in particular, to a method and an apparatus for communication between base stations, and a base station.

Background

In order to better support dynamic change of service load, a dynamic Time Division Duplexing (TDD) technology is studied in a 5G new air interface technology, that is, flexible change of uplink and downlink transmission directions in a TDD spectrum is supported. However, in comparison with the conventional LTE system, when transmission directions of adjacent transmission points (TRPs) are not consistent, the dynamic TDD technology may introduce a new interference type, where the new interference type includes interference between the TRPs and interference between a User Equipment (UE) and the UE. For example, as shown in fig. 1, it is a schematic diagram of an interference problem in a dynamic TDD scenario. In fig. 1, in slot n, TRP1 is downlink and UE1 is served by TRP1, TRP2 is uplink and UE2 is served by TRP 2. In the uplink and downlink transmission process, on one hand, when listening to the uplink signal transmitted by the UE2, the TRP2 may also listen to the downlink signal transmitted by the TRP1 (i.e. interference between the TRP and the TRP), so that the downlink signal transmitted by the TRP1 may interfere with the uplink signal listening on the TRP2 side, which is called interference between the TRP and the TRP, and may also be called interference between downlink and uplink. On the other hand, when listening to the downlink signal transmitted by the TRP1, the UE1 may also listen to the uplink signal transmitted by the UE2 (i.e., interference between UEs), so the uplink signal transmitted by the UE2 may interfere with the listening of the downlink signal on the UE1 side, which is referred to as interference between UEs and may also be referred to as uplink-to-downlink interference.

In summary, the difference of the transmission directions of the neighboring cells may cause a new interference type to be generated, and the generation of the new interference type may cause various hazards to the communication system. On one hand, the new Interference source causes the Signal to Interference plus Noise Ratio (SINR) of the listening end to be reduced, and further deteriorates the demodulation performance; on the other hand, new interference sources may often cause the downlink channel measurement result to be out of date or invalid, thereby deteriorating the working performance of an Adaptive Modulation and Coding (AMC) scheme. For example, as shown in fig. 2, a diagram of mismatch between a downlink channel measurement result and an actually used downlink transmission channel is shown. In fig. 2, it is assumed that a base station determines a downlink scheduling resource and a downlink Modulation and Coding Scheme (MCS) parameter in a slot n based on a downlink Channel quality measurement result reported by a UE in the slot n-k1, where the UE reports a quality measurement result measured by downlink Channel State Information (CSI) measured in the slot n-k1-k2 in the slot n-k 1. In fig. 2, the uplink and downlink transmission directions of the surrounding base stations (including TRP2, TRP3, and TRP4) of the base station in slot n-k1-k2 and slot n are different, so the downlink channel quality measured by the UE in slot n-k1-k2 is largely inconsistent with the downlink channel quality experienced by the base station in slot n, which results in that the downlink channel quality measurement result fed back by the UE is often outdated and invalid in a dynamic TDD scenario, thereby deteriorating the working performance of the AMC mechanism.

Therefore, in order to avoid generating a new interference type and the problem that the downlink channel quality measurement result is outdated or invalid, the uplink and downlink transmission directions of the neighboring cell need to be identified.

Disclosure of Invention

The invention aims to provide a communication method and device between base stations and the base stations, and aims to solve the problems that a new interference type is easily generated in a dynamic TDD scene and a downlink channel quality measurement result is outdated or invalid due to the fact that the uplink and downlink transmission directions of an adjacent region cannot be identified in the prior art.

In a first aspect, an embodiment of the present invention provides a communication method between base stations, which is applied to a first base station, and the communication method includes:

in a transmission time unit for uplink or downlink data transmission, sending a dedicated air interface signal of a first base station at a first time window, and intercepting a first air interface signal sent by a second base station at a second time window; wherein the content of the first and second substances,

the first air interface signal comprises a second air interface signal sensed by a second base station and an exclusive air interface signal of the second base station.

Optionally, the communication method further includes: and sending a third air interface signal in a third time window in a transmission time unit for uplink or downlink data transmission, wherein the third air interface signal at least comprises the first air interface signal.

Optionally, the communication method further includes: monitoring whether the first air interface signal can be sensed in a second time window of the first preset transmission time unit; when the first air interface signal can be sensed, periodically changing the working mode of the first base station according to a preset period; when the first air interface signal cannot be sensed, randomly changing the working mode of the first base station, and when the first air interface signal can be sensed in a second preset transmission time unit, periodically changing the working mode of the first base station according to the preset period; the preset period comprises at least one transmission time unit, and the second preset transmission time unit is larger than the first preset transmission time unit; the working modes comprise: the method comprises the steps that a dedicated air interface signal of a first base station is sent in a first time window, a first air interface signal sent by a second base station is intercepted in a second time window, and a first working mode of a third air interface signal is sent in a third time window; a second working mode of intercepting a fourth air interface signal sent by the second base station in the first time window, sending a fifth air interface signal in the second time window and intercepting a sixth air interface signal sent by the second base station in the third time window; the fifth air interface signal includes the fourth air interface signal and an exclusive air interface signal of the first base station itself.

Optionally, the communication method further includes: acquiring a dedicated frequency domain resource corresponding to the base station identifier of the second base station and used for sending the dedicated air interface signal of the second base station according to a preset corresponding relation between the base station identifier and the frequency domain resource for sending the dedicated air interface signal; and acquiring the information sent by the second base station according to the dedicated frequency domain resource and the sequence type sent on the dedicated frequency domain resource.

Optionally, the information sent by the second base station includes a transmission direction of the second base station in the current time slot; when the dedicated frequency domain resource is a first frequency domain resource and the sequence type sent on the first frequency domain resource is a first sequence type, the transmission direction of the second base station at the current time slot is an uplink transmission direction; when the dedicated frequency domain resource is a second frequency domain resource and the sequence type sent on the second frequency domain resource is a second sequence type, the transmission direction of the second base station at the current time slot is a downlink transmission direction; and when the dedicated frequency domain resource is a third frequency domain resource and the sequence type sent by the third frequency domain resource is a third sequence type, the second base station is in an idle state in the current time slot.

Optionally, when the information sent by the second base station includes the transmission direction of the second base station in the current time slot, the communication method further includes: and determining a downlink channel quality measurement result matched with the current channel of the first base station according to the transmission direction of the second base station in the current time slot.

In a second aspect, an embodiment of the present invention further provides a communication method between base stations, which is applied to a second base station, where the communication method includes:

in a transmission time unit for uplink or downlink data transmission, a dedicated air interface signal of a first base station sent by the first base station is intercepted in a first time window, and the first air interface signal is sent in a second time window; the first air interface signal comprises a second air interface signal sensed by a second base station and an exclusive air interface signal of the second base station.

Optionally, the communication method further includes: and in a transmission time unit for uplink or downlink data transmission, monitoring a third air interface signal in a third time window, wherein the third air interface signal at least comprises the first air interface signal.

Optionally, the communication method further includes: monitoring whether an exclusive air interface signal of a first base station can be sensed in a first time window of a first preset transmission time unit; when the exclusive air interface signal of the first base station can be sensed, periodically changing the working mode of the second base station according to a preset period; when the exclusive air interface signal of the first base station can not be sensed, randomly changing the working mode of the second base station, and when the exclusive air interface signal of the first base station can be sensed in a second preset transmission time unit, periodically changing the working mode of the second base station according to the preset period; the preset period comprises at least one transmission time unit, and the second preset transmission time unit is larger than the first preset transmission time unit; the working modes comprise: the method comprises the steps of intercepting a dedicated air interface signal of a first base station sent by the first base station in a first time window, sending a first air interface signal in a second time window, and intercepting a third working mode of a third air interface signal in a third time window; a fourth working mode of sending a dedicated air interface signal of the second base station per se in the first time window, monitoring a fifth air interface signal sent by the first base station in the second time window, and sending a sixth air interface signal in the third time window; wherein the sixth air interface signal at least comprises the fifth air interface signal.

Optionally, the communication method further includes: acquiring a dedicated frequency domain resource corresponding to the base station identifier of the first base station and used for sending the dedicated air interface signal of the first base station according to a preset corresponding relation between the base station identifier and the frequency domain resource for sending the dedicated air interface signal; and acquiring the information sent by the first base station according to the dedicated frequency domain resource and the sequence type sent on the dedicated frequency domain resource.

Optionally, the information sent by the first base station includes a transmission direction of the first base station in the current time slot; when the dedicated frequency domain resource is a first frequency domain resource and the sequence type sent on the first frequency domain resource is a first sequence type, the transmission direction of the first base station at the current time slot is an uplink transmission direction; when the dedicated frequency domain resource is a second frequency domain resource and the sequence type sent on the second frequency domain resource is a second sequence type, the transmission direction of the first base station at the current time slot is a downlink transmission direction; and when the exclusive frequency domain resource is a third frequency domain resource and the sequence type sent by the third frequency domain resource is a third sequence type, the first base station is in an idle state in the current time slot.

Optionally, when the information sent by the first base station includes the transmission direction of the first base station in the current time slot, the communication method further includes: and determining a downlink channel quality measurement result matched with the current channel of the second base station according to the transmission direction of the first base station in the current time slot.

In a third aspect, an embodiment of the present invention provides a communication apparatus between base stations, which is applied to a first base station, and includes:

a signal transmission module, configured to send, in a transmission time unit for performing uplink or downlink data transmission, a dedicated air interface signal of a first base station itself in a first time window, and listen to a first air interface signal sent by a second base station in a second time window; the first air interface signal comprises a second air interface signal sensed by a second base station and an exclusive air interface signal of the second base station.

In a fourth aspect, an embodiment of the present invention provides a communication apparatus between base stations, which is applied to a second base station, and the communication apparatus includes:

the signal transmission module is configured to, in a transmission time unit for performing uplink or downlink data transmission, listen to a dedicated air interface signal of a first base station itself sent by the first base station in a first time window, and send a first air interface signal in a second time window, where the first air interface signal includes a second air interface signal listened by a second base station and the dedicated air interface signal of the second base station itself.

In a fifth aspect, an embodiment of the present invention provides a base station, including a memory, a processor, a transceiver, and a computer program stored on the memory and executable on the processor; the processor, when executing the computer program, implements a communication method as described in any of the first aspects or a communication method as described in any of the second aspects.

In a sixth aspect, the present invention provides a computer-readable storage medium, on which a computer program is stored, where the computer program is executed by a processor to implement the communication method in any one of the first aspect or the communication method in any one of the second aspect.

The invention has the beneficial effects that:

in the transmission time unit for performing uplink or downlink data transmission according to the embodiments of the present invention, the first base station sends the dedicated air interface signal of the first base station itself in the first time window, and listens the first air interface signal sent by the second base station in the second time window, so that when the first air interface signal includes the second air interface signal that is listened to by the second base station, the second base station can play a role of repeating the second air interface signal that is listened to by the second base station with respect to the first base station, so that when the second air interface signal that is listened to by the second base station includes the dedicated air interface signal that is sent by the peripheral base station of the first base station, the first base station can obtain the dedicated air interface signal of the peripheral base station and the dedicated air interface signal of the second base station itself in the second time window, and further enable the first base station to obtain the uplink and downlink transmission directions of the peripheral base station according to the air interface signal of the peripheral base station, and the problems that new interference types are easily generated in a dynamic TDD scene and the measurement result of the downlink channel quality is out of date or invalid due to the fact that the uplink and downlink transmission directions of the adjacent region cannot be identified in the prior art are solved.

Drawings

Fig. 1 illustrates a schematic diagram of interference problem in a dynamic TDD scenario;

fig. 2 is a schematic diagram illustrating the mismatch between the downlink channel measurement result and the actually used downlink transmission channel;

FIG. 3 is a diagram illustrating a first time window, a second time window, and a third time window in a slot interval of one slot in an embodiment of the present invention;

FIG. 4 is a diagram illustrating a first time window, a second time window, and a third time window at different slot intervals in an embodiment of the present invention;

fig. 5 is a flowchart illustrating detailed steps of a communication method applied to a first base station in an embodiment of the present invention;

fig. 6 is a flowchart illustrating detailed steps of a communication method applied to a second base station in an embodiment of the present invention;

fig. 7 is a block diagram showing a configuration of a communication apparatus applied to a first base station in the embodiment of the present invention;

fig. 8 is a block diagram showing a configuration of a communication apparatus applied to a second base station in the embodiment of the present invention;

fig. 9 is a schematic diagram of a hardware structure of a first base station in the embodiment of the present invention;

fig. 10 is a schematic diagram of a hardware structure of the second base station in the embodiment of the present invention.

Detailed Description

Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.

In order to solve the problems that a new interference type is easily generated in a dynamic TDD scene and a downlink channel quality measurement result is outdated or invalid due to the fact that an uplink transmission direction and a downlink transmission direction of a neighboring cell cannot be identified in the prior art, an embodiment of the present invention provides a communication method between base stations, where the communication method is applied to a first base station, and specifically, the communication method includes:

in a transmission time unit for uplink or downlink data transmission, a first base station sends a dedicated air interface signal of the first base station at a first time window, and listens to a first air interface signal sent by a second base station at a second time window; the first air interface signal comprises a second air interface signal sensed by the second base station and a dedicated air interface signal of the second base station.

Specifically, the first base station and the second base station are both base stations that do not support full duplex, and the first base station refers to a first type of base station, the second base station refers to a second type of base station, and the second base station is a surrounding base station of the first base station. In this way, as long as the first type of base station all sends the dedicated air interface signal of the first base station itself in the first time window, and listens to the first air interface signal sent by the second type of base station in the second time window. Correspondingly, the second base station listens to the dedicated air interface signal of the first base station itself sent by the first base station in the transmission time unit in the first time window, and sends the first air interface signal in the second time window. Specifically, the first air interface signal includes a second air interface signal sensed by the second base station and a dedicated air interface signal of the second base station. In addition, the second air interface signal sensed by the second base station includes a dedicated air interface signal of the first base station itself, which is sent by the first base station in the first time window.

In this way, the first base station sends the dedicated air interface signal of the first base station itself in the first time window, and listens to the first air interface signal sent by the second base station in the second time window, so that the second base station can play a role of replying the second air interface signal listened by the second base station with respect to the first base station when the first air interface signal includes the second air interface signal listened by the second base station. When the second air interface signal sensed by the second base station comprises an exclusive air interface signal of a base station belonging to the first type in surrounding base stations of the first base station, the first base station can acquire the exclusive air interface signal of the base station belonging to the first type in the periodic base station in a second time window; in addition, the first base station can also acquire the dedicated air interface signal of the second base station belonging to the second type, so that the first base station can simultaneously acquire the dedicated air interface signals of the surrounding base stations, and further the first base station can acquire the uplink and downlink transmission directions of the surrounding base stations according to the dedicated air interface signals of the surrounding base stations, thereby solving the problems that a new interference type is easily generated in a dynamic TDD scene and the downlink channel quality measurement result is outdated or invalid due to the fact that the uplink and downlink transmission directions of the neighboring cells cannot be identified in the prior art.

Further, in a transmission time unit for performing uplink or downlink data transmission, the first base station sends a third air interface signal in a third time window, where the third air interface signal at least includes the first air interface signal. Accordingly, the second base station receives the third air interface signal in a third time window.

Thus, since the first air interface signal includes the dedicated air interface signal of the second base station, when the third air interface signal includes the first air interface signal, the first base station can also play a role in repeating the dedicated air interface signal of the second base station with respect to the second base station. The second base station can acquire the dedicated air interface signals of other base stations of the same second type, so that both the first base station and the second base station can acquire the dedicated air interface signals of the surrounding base stations, and both the first base station and the second base station can acquire the uplink and downlink transmission directions of the surrounding base stations according to the dedicated air interface signals of the surrounding base stations.

Specifically, in one transmission time unit, the first time window, the second time window and the third time window may be in a slot interval of one slot. As shown in fig. 3 in particular, in fig. 3, the first time window, the second time window and the third time window are in one slot interval of slot n.

In addition, specifically, in one transmission time unit, the first time window, the second time window and the third time window may also be in the slot intervals of different slots. As shown in fig. 4 in particular, in fig. 4 the first time window is in the beginning slot interval of slot n, while the second and third time windows are in the end slot interval of slot n-1. In addition, specifically, the first time window and the second time window may be in the beginning slot interval of slot n, and the third time window may be in the ending slot interval of slot n-1.

It should be noted that, referring to fig. 3 and fig. 4, when the first time window, the second time window and the third time window are in the time slot intervals of different time slots, the time interval between the first time window and the second time window is larger than the time slot interval when the first time window, the second time window and the third time window are in the same time slot, so that more processing time can be set aside for the base station.

In addition, further, in order to ensure that the adjacent base stations can acquire air interface signals of the other side from each other, a second base station needs to exist around each first base station, otherwise, the first base station cannot acquire information of the adjacent base stations.

This scenario is explained in detail below.

Suppose that in a base station topology relationship including four base stations, namely, a base station a, a base station B, a base station C and a base station D, the base station a can only listen to signals of the base station B and the base station C, the base station B can listen to signals of the base station a, the base station C and the base station D, the base station C can listen to signals of the base station a, the base station B and the base station D, and the base station D can only listen to signals of the base station B and the base station C.

At this time, it is assumed that in the first transmission time unit, base station a, base station B, base station C, and base station D are all the first base stations, that is, base station a, base station B, base station C, and base station D all select to send their own dedicated air interface signals in the first time window, and listen to the first air interface signals sent by the second base station in the second time window. Therefore, at this time, in the second time window, all of the base station a, the base station B, the base station C, and the base station D are in the listening state, and none of the base stations is in the state of sending the air interface signal, so that any one of the four first base stations of the base station a, the base station B, the base station C, and the base station D cannot listen to the air interface signal sent by the other base station.

For the above scenario, the first base station and the second base station in the base station topology relationship may be configured in the following manner.

First, a first base station and a second base station in a base station topological relation may be configured through operation, administration and maintenance (OAM) configuration. For example, base station B and base station C may be configured as a first base station, and base station a and base station D may be configured as a second base station, such that the first base station sends an own dedicated air interface signal of the first base station in a first time window, and listens to a first air interface signal sent by the second base station in a second time window, and the second base station listens to an own dedicated air interface signal of the first base station sent by the first base station in the first time window, and when the second base station sends the first air interface signal in the second time window, it may be ensured that base station B and base station C listen to the first air interface signal sent by base station a and base station D in the second time window, and it may be ensured that base station a and base station D can listen to an own dedicated air interface signal sent by base station B and an own air interface signal sent by base station C in the first time window.

Secondly, when initializing, the base stations can coordinate the base stations in the base station topological relation to serve as the first base station or the second base station through a wired or wireless backhaul line interface, so that the second base station is ensured to exist around the first base station.

Thirdly, whether the first air interface signal can be sensed in a second time window of the first preset transmission time unit can be monitored; when the first air interface signal can be sensed, periodically changing the working mode of the first base station according to a preset period; when the first air interface signal cannot be sensed, the working mode of the first base station is changed randomly, and when the first air interface signal can be sensed in a second preset transmission time unit, the working mode of the first base station is changed periodically according to a preset period; the preset period comprises at least one transmission time unit, and the second preset transmission time unit is larger than the first preset transmission time unit; the working modes comprise: the method comprises the steps that a dedicated air interface signal of a first base station is sent in a first time window, a first air interface signal sent by a second base station is intercepted in a second time window, and a first working mode of a third air interface signal is sent in a third time window; a second working mode of intercepting a fourth air interface signal sent by the second base station in the first time window, sending a fifth air interface signal in the second time window and intercepting a sixth air interface signal sent by the second base station in the third time window; the fifth air interface signal includes a fourth air interface signal and an exclusive air interface signal of the first base station.

Specifically, when the first base station monitors that the first air interface signal can be sensed in the second time window, it is indicated that the second base station exists around the first base station, and at this time, the working mode of the first base station only needs to be periodically changed according to a preset period. Of course, the preset period may be at least one preset transmission time unit. Accordingly, at this time, the second base station can listen to the dedicated air interface signal of the first base station itself sent by the first base station in the first time window, and the second base station only needs to periodically change the working mode of the second base station according to the same preset period.

This scenario is explained below.

For example, assuming that the preset period is a preset transmission time unit, base station B and base station C are first base stations, base station a and base station D are second base stations, and the operation mode of base station B and base station C in the first preset transmission time unit is a first operation mode, the operation mode of base station a and base station D in the first preset transmission time unit is a third operation mode, that is, in the first preset transmission time unit, base station B and base station C both transmit the own dedicated air interface signal of base station in a first time window, base station a and base station D both listen to the own dedicated air interface signal of base station B and the own dedicated air interface signal of base station C in the first time window, base station a and base station D both transmit the first air interface signal in a second time window, and base station B and base station C both listen to the first air interface signal transmitted by base station a and the first air interface signal transmitted by base station D in the second time window, and both the base station B and the base station C send a third air interface signal in a third time window, and both the base station A and the base station D receive the third air interface signal sent by the base station B and the third air interface signal sent by the base station C in the third time window. At this time, the operation mode of the first base station is periodically changed, and the operation mode of the second base station is periodically changed, that is, in the second preset transmission time unit, the operation mode of the first base station is changed from the first operation mode to the second operation mode, and the operation mode of the second base station is changed from the third operation mode to the fourth operation mode. In a second preset transmission time unit, both base station a and base station D send dedicated air interface signals of the base station itself in a first time window, both base station B and base station C listen to a fourth air interface signal sent by base station a and a fourth air interface signal sent by base station D in the first time window, both base station B and base station C send a fifth air interface signal in a second time window, both base station a and base station D listen to a fifth air interface signal sent by base station B and a fifth air interface signal sent by base station C in the second time window, both base station a and base station D send a sixth air interface signal in a third time window, and both base station B and base station C listen to a sixth air interface signal sent by base station a and a sixth air interface signal sent by base station D in the third time window.

Because the first air interface signal includes the second air interface signal listened by the second base station (base station a and base station D) and the dedicated air interface signal of the base station itself, the second base station (base station a and base station D) can play a role of repeating the air interface signal with respect to the first base station (base station B and base station C), so that the base station B can obtain the dedicated air interface signal of the base station itself of the base station a, the base station C and the base station D in the second time window, and the base station C can obtain the dedicated air interface signal of the base station itself of the base station a, the base station B and the base station D in the second time window. In addition, because the third air interface signal at least includes the first air interface signal, and the first air interface signal includes the second air interface signal listened by the second base station (base station a and base station D) and the dedicated air interface signal of the base station itself, so that the base station a can acquire the dedicated air interface signal of the base station itself of the base station B, the base station C and the base station D, and the base station D can acquire the dedicated air interface signal of the base station itself of the base station a, the base station B and the base station C, that is, the first base station (base station B and base station C) can also play a role in replying the air interface signal with respect to the second base station (base station a and base station D).

In addition, specifically, when the first base station cannot sense the first null signal, it indicates that there is no second base station around the first base station, and at this time, the operation mode of the first base station may be randomly changed, that is, the first base station may change the operation mode of the first base station with a preset probability. For example, assuming that the predetermined period is a predetermined transmission time unit and the operation mode of the first base station in the first predetermined transmission time unit is the first operation mode, the operation mode of the first base station in the second predetermined transmission time unit may be changed to the second operation mode with a predetermined probability, that is, the operation mode of the first base station in the second predetermined transmission time unit may be the second operation mode and may be maintained as the first operation mode. At this time, since the operation mode of the first base station is changed randomly, it cannot be guaranteed that the first base station is changed from the first operation mode to the second operation mode in the second preset transmission time unit, at this time, the operation mode of the first base station needs to be continuously changed randomly until the first null signal can be sensed in the second preset transmission time unit, that is, the first base station is changed from the first operation mode to the second operation mode in the second preset transmission time unit, and then the operation mode of the first base station can be periodically changed according to a preset period, and accordingly, the operation mode of the second base station is periodically changed.

This scenario is explained below.

For example, assume that the preset period is a preset transmission time unit, and the base station a, the base station B, the base station C, and the base station D are all first base stations, and the operating modes of the base station a, the base station B, the base station C, and the base station D in the first preset transmission time unit are all first operating modes. Therefore, the base station A, the base station B, the base station C and the base station D cannot listen to the first air interface signal, the working modes of the base station A, the base station B, the base station C and the base station D can be changed randomly at this moment until the working modes of the base stations existing in the base station A, the base station B, the base station C and the base station D are changed from the first working mode to the second working mode, then the working mode of the first base station can be changed periodically according to a preset period, and correspondingly, the working mode of the second base station can be changed periodically.

Therefore, when monitoring that the first air interface signal can be sensed in the second preset transmission time unit, the working mode of the first base station is periodically changed according to the preset period, so that the working mode of the first base station can be changed according to the preset period, the first base station can also play a role in repeating the above function relative to the second base station, the second base station can also obtain the exclusive air interface signal of the periodic base station, and the second base station can obtain the uplink and downlink transmission directions of the surrounding base stations according to the exclusive air interface signal of the surrounding base stations.

Furthermore, as shown in fig. 5, a detailed step flowchart of the communication method applied to the first base station is shown. The communication method further comprises the following steps:

step 501, in a transmission time unit for performing uplink or downlink data transmission, sending a dedicated air interface signal of a first base station itself in a first time window, and listening to a first air interface signal sent by a second base station in a second time window.

Step 502, according to a preset corresponding relationship between the base station identifier and the frequency domain resource for transmitting the dedicated air interface signal, acquiring the dedicated frequency domain resource corresponding to the base station identifier of the second base station and used for transmitting the dedicated air interface signal of the second base station.

Specifically, a preset corresponding relationship between the base station identifier and the dedicated frequency domain resource of the dedicated air interface signal sent by the base station may be pre-established, so that the dedicated frequency domain resource of the dedicated air interface signal sent by the base station corresponding to the base station identifier may be obtained according to the base station identifier by establishing the preset corresponding relationship between the base station identifier and the dedicated frequency domain resource of the dedicated air interface signal sent by the base station.

Specifically, the frequency domain resources used by the base station in different transmission time units may be the same or different. When the frequency domain resources used by the base station in different transmission time units are different, the frequency domain position of the base station itself can be selected in different transmission time units according to a preset frequency modulation mode.

Step 503, obtaining the information sent by the second base station according to the dedicated frequency domain resource and the sequence type sent on the dedicated frequency domain resource.

Specifically, the information sent by the second base station includes the transmission direction of the second base station in the current time slot.

The dedicated air interface signals of all base stations can take values from a certain predefined sequence set, and carry information through sequence types. For example, the sequence set includes at least two sequence types, where sequence 0 indicates that the current timeslot of the base station is a timeslot with downlink transmission as the main, and sequence 1 indicates that the current timeslot of the base station is a timeslot with uplink transmission as the main. The transmission direction of the second base station at the current time slot can be obtained comprehensively according to the dedicated frequency domain resource and the sequence type sent on the dedicated frequency domain resource. At this time, when the dedicated frequency domain resource is the first frequency domain resource and the sequence type sent on the first frequency domain resource is the first sequence type, the transmission direction of the second base station at the current time slot is the uplink transmission direction; when the dedicated frequency domain resource is a second frequency domain resource and the sequence type sent on the second frequency domain resource is a second sequence type, the transmission direction of the second base station at the current time slot is a downlink transmission direction; and when the dedicated frequency domain resource is a third frequency domain resource and the sequence type sent by the third frequency domain resource is a third sequence type, the second base station is in an idle state in the current time slot.

Step 504, determining a downlink channel quality measurement result matched with the current channel of the first base station according to the transmission direction of the second base station in the current time slot.

In this step, specifically, when the transmission direction of the second base station at the current time slot is obtained, the first base station may select the downlink channel quality measurement result matched with the current channel of the first base station, so as to avoid the problem that the downlink channel quality measurement result is outdated or invalid.

Thus, the first base station in the embodiment of the present invention transmits the dedicated air interface signal of the first base station itself in the first time window, and listens to the first air interface signal transmitted by the second base station in the second time window, which enables the second base station to have the function of repeating the second air interface signal listened by the second base station with respect to the first base station when the first air interface signal includes the second air interface signal listened by the second base station, so that the first base station can acquire the dedicated air interface signal of the surrounding base station and the dedicated air interface signal of the second base station itself in the second time window when the second air interface signal listened by the second base station includes the dedicated air interface signal transmitted by the surrounding base station of the first base station, and further enable the first base station to acquire the uplink and downlink transmission directions of the surrounding base station according to the dedicated air interface signals of the surrounding base station, thereby solving the problem that the uplink and downlink transmission directions cannot be identified in the prior art, resulting in problems of easily generating new interference types and outdated or invalid downlink channel quality measurements in dynamic TDD scenarios.

On the other hand, an embodiment of the present invention further provides a communication method applied to a second base station, where the communication method includes: in a transmission time unit for uplink or downlink data transmission, a dedicated air interface signal of a first base station sent by the first base station is intercepted in a first time window, and the first air interface signal is sent in a second time window; the first air interface signal comprises a second air interface signal sensed by the second base station and a dedicated air interface signal of the second base station. Specifically, the second air interface signal includes an exclusive air interface signal of the first base station sensed by the second base station in the first time window.

Specifically, the first base station and the second base station are both base stations that do not support full duplex, and the first base station refers to a first type of base station, the second base station refers to a second type of base station, and the first base station is a surrounding base station of the second base station. In this way, as long as the base station of the second type listens to the dedicated air interface signal of the first base station itself sent by the first base station in the first time window, and sends the first air interface signal in the second time window. Correspondingly, the first base station sends a dedicated air interface signal of the first base station in the transmission time unit in a first time window, and listens to a first air interface signal sent by the second type base station in a second time window.

In this way, the second base station listens to the dedicated air interface signal of the first base station itself sent by the first base station in the first time window, and sends the first air interface signal in the second time window, so that when the first air interface signal includes the second air interface signal listened by the second base station, the second base station can play a role of replying the second air interface signal listened by the second base station with respect to the first base station. When the second air interface signal sensed by the second base station comprises an exclusive air interface signal of a base station belonging to the first type in surrounding base stations of the first base station, the first base station can acquire the exclusive air interface signal of the base station belonging to the first type in the periodic base station in a second time window; in addition, the first base station can also acquire the dedicated air interface signal of the second base station belonging to the second type, so that the first base station can simultaneously acquire the dedicated air interface signals of the surrounding base stations, and further the first base station can acquire the uplink and downlink transmission directions of the surrounding base stations according to the dedicated air interface signals of the surrounding base stations, thereby solving the problems that a new interference type is easily generated in a dynamic TDD scene and the downlink channel quality measurement result is outdated or invalid due to the fact that the uplink and downlink transmission directions of the neighboring cells cannot be identified in the prior art.

Further, in a transmission time unit for performing uplink or downlink data transmission, the second base station listens to a third air interface signal in a third time window, where the third air interface signal at least includes the first air interface signal. Accordingly, the first base station transmits a third air interface signal in a third time window.

Therefore, since the first air interface signal includes the second air interface signal sensed by the second base station and the dedicated air interface signal of the second base station, when the third air interface signal includes the first air interface signal, the first base station can also play a role in repeating the above description with respect to the second base station. The second base station can acquire the dedicated air interface signals of other base stations of the same second type, so that both the first base station and the second base station can acquire the dedicated air interface signals of the surrounding base stations, and both the first base station and the second base station can acquire the uplink and downlink transmission directions of the surrounding base stations according to the dedicated air interface signals of the surrounding base stations.

In addition, further, in order to ensure that the adjacent base stations can acquire air interface signals of the other side from each other, the first base station needs to exist around each second base station, otherwise, the second base station cannot acquire information of the adjacent base stations.

This scenario is explained in detail below.

At this time, it is assumed that in the first transmission time unit, base station a, base station B, base station C, and base station D are all second base stations, that is, base station a, base station B, base station C, and base station D all select to listen to air interface signals of other base stations in the first time window, and send the first air interface signal in the second time window. Therefore, at this time, in the first time window, all of the base station a, the base station B, the base station C, and the base station D are in the listening state, and none of the base stations is in the state of sending the air interface signal, so that any one of the four base stations of the base station a, the base station B, the base station C, and the base station D cannot listen to the air interface signal sent by the other base station.

First, a first base station and a second base station in a base station topological relation may be configured through OAM configuration. For example, base station B and base station C may be configured as a first base station, and base station a and base station D may be configured as a second base station, such that the first base station sends an own dedicated air interface signal of the first base station in a first time window, and listens to a first air interface signal sent by the second base station in a second time window, and the second base station listens to an own dedicated air interface signal of the first base station sent by the first base station in the first time window, and when the second base station sends the first air interface signal in the second time window, it may be ensured that base station B and base station C listen to the first air interface signal sent by base station a and base station D in the second time window, and it may be ensured that base station a and base station D can listen to an own dedicated air interface signal sent by base station B and an own air interface signal sent by base station C in the first time window.

Thirdly, whether the exclusive air interface signal of the first base station can be sensed in a first time window of a first preset transmission time unit can be monitored; when the exclusive air interface signal of the first base station can be sensed, periodically changing the working mode of the second base station according to a preset period; when the exclusive air interface signal of the first base station can not be sensed, the working mode of the second base station is randomly changed, and when the exclusive air interface signal of the first base station can be sensed in a second preset transmission time unit, the working mode of the second base station is periodically changed according to a preset period; the preset period comprises at least one transmission time unit, and the second preset transmission time unit is larger than the first preset transmission time unit; the working modes comprise: the method comprises the steps of intercepting a dedicated air interface signal of a first base station sent by the first base station in a first time window, sending a first air interface signal in a second time window, and intercepting a third working mode of a third air interface signal in a third time window; a fourth working mode of sending a dedicated air interface signal of the second base station per se in the first time window, monitoring a fifth air interface signal sent by the first base station in the second time window, and sending a sixth air interface signal in the third time window; wherein the sixth air interface signal at least comprises a fifth air interface signal.

Specifically, when the second base station monitors that the dedicated air interface signal of the first base station itself can be sensed in the first time window of the first preset transmission time unit, it is indicated that the first base station exists around the second base station, and at this time, the working mode of the second base station only needs to be periodically changed according to a preset period. Of course, the preset period may be at least one preset transmission time unit. Accordingly, at this time, the first base station can listen to the first air interface signal sent by the second base station in the second time window, and the first base station also only needs to periodically change the working mode of the first base station according to the same preset period.

This scenario is explained below.

For example, assuming that the preset period is a preset transmission time unit, base station B and base station C are first base stations, base station a and base station D are second base stations, and the operation mode of base station B and base station C in the first preset transmission time unit is a first operation mode, the operation mode of base station a and base station D in the first preset transmission time unit is a third operation mode, that is, in the first preset transmission time unit, base station B and base station C both transmit the own dedicated air interface signal of base station in a first time window, base station a and base station D both listen to the own dedicated air interface signal of base station B and the own dedicated air interface signal of base station C in the first time window, base station a and base station D both transmit the first air interface signal in a second time window, and base station B and base station C both listen to the first air interface signal transmitted by base station a and the first air interface signal transmitted by base station D in the second time window, and both the base station B and the base station C send a third air interface signal in a third time window, and both the base station A and the base station D receive the third air interface signal sent by the base station B and the third air interface signal sent by the base station C in the third time window. At this time, the operation mode of the second base station is periodically changed, and the operation mode of the first base station is periodically changed, that is, in a second preset transmission time unit, the operation mode of the second base station is changed from the third operation mode to the fourth operation mode, and the operation mode of the first base station is changed from the first operation mode to the second operation mode. In a second preset transmission time unit, both base station a and base station D send dedicated air interface signals of the base station itself in a first time window, both base station B and base station C listen to a fourth air interface signal sent by base station a and a fourth air interface signal sent by base station D in the first time window, both base station B and base station C send a fifth air interface signal in a second time window, both base station a and base station D listen to a fifth air interface signal sent by base station B and a fifth air interface signal sent by base station C in the second time window, both base station a and base station D send a sixth air interface signal in a third time window, and both base station B and base station C listen to a sixth air interface signal sent by base station a and a sixth air interface signal sent by base station D in the third time window.

In addition, specifically, when the second base station monitors that the dedicated air interface signal of the first base station itself cannot be heard in the first time window of the first preset transmission time unit, it indicates that the first base station does not exist around the second base station, and at this time, the operating mode of the second base station may be randomly changed, that is, the second base station may change the operating mode of the second base station with a preset probability. For example, assuming that the predetermined period is one predetermined tti and the operation mode of the second bs in the first predetermined tti is the third operation mode, the operation mode of the second bs in the second predetermined tti may be changed to the fourth operation mode with a predetermined probability, i.e. the operation mode of the second bs in the second predetermined tti may be the fourth operation mode or may be maintained as the third operation mode. At this time, since the operating mode of the second base station is changed randomly, it cannot be guaranteed that the second base station is changed from the third operating mode to the fourth operating mode in the second preset transmission time unit, at this time, the operating mode of the second base station needs to be continuously changed randomly until the dedicated air interface signal of the first base station itself can be detected in the second preset transmission time unit, that is, the second base station is changed from the third operating mode to the fourth operating mode in the second preset transmission time unit, and then the operating mode of the second base station can be periodically changed according to a preset period, and accordingly, the operating mode of the first base station is periodically changed.

This scenario is explained below.

For example, assume that the preset period is a preset tti, and the bs a, the bs B, the bs C, and the bs D are all second bss, and the operating modes of the bs a, the bs B, the bs C, and the bs D in the first tti are all third operating modes. Therefore, the base station A, the base station B, the base station C and the base station D cannot listen to the dedicated air interface signal of the first base station, at this time, the working modes of the base station A, the base station B, the base station C and the base station D can be changed randomly until the working modes of the base stations existing in the base station A, the base station B, the base station C and the base station D are changed from the third working mode to the fourth working mode, then the working mode of the second base station can be changed periodically according to a preset period, and correspondingly, the working mode of the first base station is changed periodically.

Therefore, when monitoring that the exclusive air interface signal of the first base station can be sensed in the first time window of the second preset transmission time unit, the working mode of the second base station can be periodically changed according to the preset period, so that the working mode of the second base station can be changed according to the preset period, the first base station and the second base station can mutually play a repeating role, the first base station and the second base station can obtain the exclusive air interface signal of the periodic base station, and the first base station and the second base station can obtain the uplink and downlink transmission directions of the surrounding base stations according to the exclusive air interface signal of the surrounding base station.

Furthermore, as shown in fig. 6, a detailed step flowchart of the communication method applied to the second base station is shown. The communication method further comprises the following steps:

step 601, in a transmission time unit for uplink or downlink data transmission, an exclusive air interface signal of a first base station sent by the first base station is intercepted in a first time window, and the first air interface signal is sent in a second time window.

Step 602, acquiring a dedicated frequency domain resource corresponding to the base station identifier of the first base station and used for transmitting a dedicated air interface signal of the first base station according to a preset corresponding relationship between the base station identifier and the frequency domain resource for transmitting the dedicated air interface signal;

in this step, specifically, a preset corresponding relationship between the base station identifier and the dedicated frequency domain resource of the dedicated air interface signal sent by the base station may be pre-established, so that the dedicated frequency domain resource of the dedicated air interface signal sent by the base station corresponding to the base station identifier may be obtained according to the base station identifier by establishing the preset corresponding relationship between the base station identifier and the dedicated frequency domain resource of the dedicated air interface signal sent by the base station.

Step 603, obtaining information sent by the first base station according to the dedicated frequency domain resource and the sequence type sent on the dedicated frequency domain resource.

Specifically, the information sent by the first base station includes a transmission direction of the first base station in the current time slot.

The dedicated air interface signals of all base stations can take values from a certain predefined sequence set, and carry information through sequence types. For example, the sequence set includes at least two sequence types, where sequence 0 indicates that the current timeslot of the base station is a timeslot with downlink transmission as the main, and sequence 1 indicates that the current timeslot of the base station is a timeslot with uplink transmission as the main. The transmission direction of the first base station at the current time slot can be obtained comprehensively according to the dedicated frequency domain resource and the sequence type sent on the dedicated frequency domain resource. At this time, when the dedicated frequency domain resource is a first frequency domain resource and the sequence type sent on the first frequency domain resource is a first sequence type, the transmission direction of the first base station at the current time slot is an uplink transmission direction; when the dedicated frequency domain resource is a second frequency domain resource and the sequence type sent on the second frequency domain resource is a second sequence type, the transmission direction of the first base station at the current time slot is a downlink transmission direction; and when the dedicated frequency domain resource is a third frequency domain resource and the sequence type sent on the third frequency domain resource is a third sequence type, the first base station is in an idle state in the current time slot.

Step 604, determining a downlink channel quality measurement result matched with the current channel of the second base station according to the transmission direction of the first base station in the current time slot.

In this step, specifically, when the transmission direction of the first base station at the current time slot is obtained, the second base station may select the downlink channel quality measurement result matched with the current channel of the first base station, so as to avoid the problem that the downlink channel quality measurement result is outdated or invalid.

Thus, the second base station in the embodiment of the present invention, by listening to the own dedicated air interface signal of the first base station sent by the first base station in the first time window and sending the first air interface signal in the second time window, when the first air interface signal includes the second air interface signal detected by the second base station, enables the second base station to function as a repeat of the second air interface signal detected by the second base station with respect to the first base station, so that when the second air interface signal detected by the second base station includes the own dedicated air interface signal of the peripheral base station of the first base station, the first base station can obtain the own dedicated air interface signal of the periodic base station and the own dedicated air interface signal of the second base station in the second time window, and further enable the first base station to obtain the uplink and downlink transmission directions of the peripheral base station according to the own dedicated air interface signals of the peripheral base station, thereby solving the problem that the uplink and downlink transmission directions of the neighboring cells cannot be identified in the prior art, resulting in problems of easily generating new interference types and outdated or invalid downlink channel quality measurements in dynamic TDD scenarios.

On the other hand, an embodiment of the present invention provides a communication apparatus between base stations, which is applied to a first base station, and specifically as shown in fig. 7, the communication apparatus includes:

a signal transmission module 701, configured to send, in a transmission time unit for performing uplink or downlink data transmission, a dedicated air interface signal of a first base station itself in a first time window, and listen to a first air interface signal sent by a second base station in a second time window; the first air interface signal comprises a second air interface signal sensed by a second base station and an exclusive air interface signal of the second base station.

Optionally, the signal transmission module 701 is further configured to send, in a transmission time unit for performing uplink or downlink data transmission, a third air interface signal in a third time window, where the third air interface signal at least includes the first air interface signal.

Optionally, the communication device further comprises: a monitoring module 702, configured to monitor whether the first air interface signal can be heard in a second time window of the first preset transmission time unit; when the first air interface signal can be sensed, periodically changing the working mode of the first base station according to a preset period; when the first air interface signal cannot be sensed, randomly changing the working mode of the first base station, and when the first air interface signal can be sensed in a second preset transmission time unit, periodically changing the working mode of the first base station according to the preset period; the preset period comprises at least one transmission time unit, and the second preset transmission time unit is larger than the first preset transmission time unit; the working modes comprise: the method comprises the steps that a dedicated air interface signal of a first base station is sent in a first time window, a first air interface signal sent by a second base station is intercepted in a second time window, and a first working mode of a third air interface signal is sent in a third time window; a second working mode of intercepting a fourth air interface signal sent by the second base station in the first time window, sending a fifth air interface signal in the second time window and intercepting a sixth air interface signal sent by the second base station in the third time window; the fifth air interface signal includes the fourth air interface signal and an exclusive air interface signal of the first base station itself.

Optionally, the communication device further comprises: a first obtaining module 703, configured to obtain, according to a preset correspondence between a base station identifier and a frequency domain resource that transmits an exclusive air interface signal, an exclusive frequency domain resource that corresponds to the base station identifier of the second base station and is used for transmitting the exclusive air interface signal of the second base station; a second obtaining module 704, configured to obtain the information sent by the second base station according to the dedicated frequency domain resource and the sequence type sent on the dedicated frequency domain resource.

Optionally, the communication device further comprises: a determining module 705, configured to determine, according to the transmission direction of the second base station in the current time slot, a downlink channel quality measurement result matched with the current channel of the first base station when the information sent by the second base station includes the transmission direction of the second base station in the current time slot.

On the other hand, an embodiment of the present invention provides a communication apparatus between base stations, which is applied to a second base station, and specifically as shown in fig. 8, the communication apparatus includes:

a signal transmission module 801, configured to, in a transmission time unit for performing uplink or downlink data transmission, monitor a dedicated air interface signal of a first base station itself sent by the first base station in a first time window, and send the first air interface signal in a second time window; the first air interface signal comprises a second air interface signal sensed by a second base station and an exclusive air interface signal of the second base station.

Optionally, the signal transmission module 801 is further configured to, in a transmission time unit for performing uplink or downlink data transmission, listen to a third air interface signal in a third time window, where the third air interface signal at least includes the first air interface signal.

Optionally, the communication device further comprises: a monitoring module 802, configured to monitor whether an exclusive air interface signal of a first base station itself can be heard in a first time window of a first preset transmission time unit; when the exclusive air interface signal of the first base station can be sensed, periodically changing the working mode of the second base station according to a preset period; when the exclusive air interface signal of the first base station can not be sensed, randomly changing the working mode of the second base station, and when the exclusive air interface signal of the first base station can be sensed in a second preset transmission time unit, periodically changing the working mode of the second base station according to the preset period; the preset period comprises at least one transmission time unit, and the second preset transmission time unit is larger than the first preset transmission time unit; the working modes comprise: the method comprises the steps of intercepting a dedicated air interface signal of a first base station sent by the first base station in a first time window, sending a first air interface signal in a second time window, and intercepting a third working mode of a third air interface signal in a third time window; a fourth working mode of sending a dedicated air interface signal of the second base station per se in the first time window, monitoring a fifth air interface signal sent by the first base station in the second time window, and sending a sixth air interface signal in the third time window; wherein the sixth air interface signal at least comprises the fifth air interface signal.

Optionally, the communication device further comprises: a first obtaining module 803, configured to obtain, according to a preset correspondence between a base station identifier and a frequency domain resource that sends an exclusive air interface signal, an exclusive frequency domain resource that corresponds to the base station identifier of the first base station and is used to send the exclusive air interface signal of the first base station; a second obtaining module 804, configured to obtain the information sent by the first base station according to the dedicated frequency domain resource and the sequence type sent on the dedicated frequency domain resource.

Optionally, the communication device further comprises: a determining module 805, configured to determine, when the information sent by the first base station includes a transmission direction of the first base station in the current time slot, a downlink channel quality measurement result matched with the current channel of the second base station according to the transmission direction of the first base station in the current time slot.

In addition, as shown in fig. 9, an embodiment of the present invention further provides a base station, where the base station includes a memory 901, a processor 902, a transceiver 903, and a computer program stored on the memory 901 and operable on the processor 902; the processor 902 is used to read the computer program in the memory 901, and execute the following processes:

the processor 902 sends a dedicated air interface signal of the first base station itself in a first time window in a transmission time unit for uplink or downlink data transmission through the transceiver 903, and listens to a first air interface signal sent by a second base station in a second time window; the first air interface signal comprises a second air interface signal sensed by a second base station and an exclusive air interface signal of the second base station.

In fig. 9, the bus architecture may include any number of interconnected buses and bridges, with one or more processors, represented by processor 902, and various circuits, represented by memory 901, linked together. The bus architecture may also link together various other circuits such as peripherals, voltage regulators, power management circuits, and the like, which are well known in the art, and therefore, will not be described any further herein. Bus interface 904 provides an interface. The transceiver 903 may be a number of elements including a transmitter and a transceiver providing a means for communicating with various other apparatus over a transmission medium.

The processor 902 is responsible for managing the bus architecture and general processing, and the memory 901 may store data used by the processor 902 in performing operations.

Optionally, the processor 902 is further configured to, through the transceiver 903, send a third air interface signal in a third time window in a transmission time unit for performing uplink or downlink data transmission, where the third air interface signal at least includes the first air interface signal.

Optionally, the processor 902 is configured to monitor whether the first air interface signal can be sensed in a second time window of the first predetermined transmission time unit; when the first air interface signal can be sensed, periodically changing the working mode of the first base station according to a preset period; when the first air interface signal cannot be sensed, randomly changing the working mode of the first base station, and when the first air interface signal can be sensed in a second preset transmission time unit, periodically changing the working mode of the first base station according to the preset period; the preset period comprises at least one transmission time unit, and the second preset transmission time unit is larger than the first preset transmission time unit; the working modes comprise: the method comprises the steps that a dedicated air interface signal of a first base station is sent in a first time window, a first air interface signal sent by a second base station is intercepted in a second time window, and a first working mode of a third air interface signal is sent in a third time window; a second working mode of intercepting a fourth air interface signal sent by the second base station in the first time window, sending a fifth air interface signal in the second time window and intercepting a sixth air interface signal sent by the second base station in the third time window; the fifth air interface signal includes the fourth air interface signal and an exclusive air interface signal of the first base station itself.

Optionally, the processor 902 is configured to obtain, according to a preset correspondence between a base station identifier and a frequency domain resource that transmits an exclusive air interface signal, an exclusive frequency domain resource that corresponds to the base station identifier of the second base station and is used for transmitting the exclusive air interface signal of the second base station; and acquiring the information sent by the second base station according to the dedicated frequency domain resource and the sequence type sent on the dedicated frequency domain resource.

Optionally, the processor 902 is configured to, when the information sent by the second base station includes a transmission direction of the second base station in the current time slot, determine, according to the transmission direction of the second base station in the current time slot, a downlink channel quality measurement result matched with the current channel of the first base station.

In addition, as shown in fig. 10, the embodiment of the present invention further provides a base station, which includes a memory 1001, a processor 1002, a transceiver 1003, and a computer program stored on the memory 1001 and operable on the processor 1002; the processor 1002 is used for reading the computer program in the memory 1001 and executing the following processes:

the processor 1002 monitors, in a transmission time unit for performing uplink or downlink data transmission through the transceiver 1003, a dedicated air interface signal of a first base station itself sent by the first base station in a first time window, and sends the first air interface signal in a second time window; the first air interface signal comprises a second air interface signal sensed by a second base station and an exclusive air interface signal of the second base station.

In fig. 10, the bus architecture may include any number of interconnected buses and bridges, with one or more processors represented by processor 1002 and various circuits of memory represented by memory 1001 being linked together. The bus architecture may also link together various other circuits such as peripherals, voltage regulators, power management circuits, and the like, which are well known in the art, and therefore, will not be described any further herein. The bus interface 1004 provides an interface. The transceiver 1003 may be a number of elements including a transmitter and a transceiver, providing a means for communicating with various other apparatus over a transmission medium.

The processor 1002 is responsible for managing the bus architecture and general processing, and the memory 1001 may store data used by the processor 1002 in performing operations.

Optionally, the processor 1002 is further configured to, through the transceiver 1003, listen to a third air interface signal in a third time window in a transmission time unit for performing uplink or downlink data transmission, where the third air interface signal at least includes the first air interface signal.

Optionally, the processor 1002 is configured to monitor whether an exclusive air interface signal of the first base station itself can be heard in a first time window of a first preset transmission time unit; when the exclusive air interface signal of the first base station can be sensed, periodically changing the working mode of the second base station according to a preset period; when the exclusive air interface signal of the first base station can not be sensed, randomly changing the working mode of the second base station, and when the exclusive air interface signal of the first base station can be sensed in a second preset transmission time unit, periodically changing the working mode of the second base station according to the preset period; the preset period comprises at least one transmission time unit, and the second preset transmission time unit is larger than the first preset transmission time unit; the working modes comprise: the method comprises the steps of intercepting a dedicated air interface signal of a first base station sent by the first base station in a first time window, sending a first air interface signal in a second time window, and intercepting a third working mode of a third air interface signal in a third time window; a fourth working mode of sending a dedicated air interface signal of the second base station per se in the first time window, monitoring a fifth air interface signal sent by the first base station in the second time window, and sending a sixth air interface signal in the third time window; wherein the sixth air interface signal at least comprises the fifth air interface signal.

Optionally, the processor 1002 is configured to obtain, according to a preset correspondence between a base station identifier and a frequency domain resource that transmits an exclusive air interface signal, an exclusive frequency domain resource that corresponds to the base station identifier of the first base station and is used for transmitting the exclusive air interface signal of the first base station; and acquiring the information sent by the first base station according to the dedicated frequency domain resource and the sequence type sent on the dedicated frequency domain resource.

Optionally, the processor 1002 is configured to determine, when the information sent by the first base station includes a transmission direction of the first base station in the current time slot, a downlink channel quality measurement result matched with the current channel of the second base station according to the transmission direction of the first base station in the current time slot.

In addition, an embodiment of the present invention also provides a computer-readable storage medium on which a computer program is stored, the computer program, when executed by a processor, implementing the steps of:

in a transmission time unit for uplink or downlink data transmission, sending a dedicated air interface signal of a first base station at a first time window, and intercepting a first air interface signal sent by a second base station at a second time window; the first air interface signal comprises a second air interface signal sensed by a second base station and an exclusive air interface signal of the second base station.

Optionally, in a transmission time unit for performing uplink or downlink data transmission, a third air interface signal is sent in a third time window, where the third air interface signal at least includes the first air interface signal.

Optionally, monitoring whether the first air interface signal can be sensed in a second time window of the first preset transmission time unit; when the first air interface signal can be sensed, periodically changing the working mode of the first base station according to a preset period; when the first air interface signal cannot be sensed, randomly changing the working mode of the first base station, and when the first air interface signal can be sensed in a second preset transmission time unit, periodically changing the working mode of the first base station according to the preset period; the preset period comprises at least one transmission time unit, and the second preset transmission time unit is larger than the first preset transmission time unit; the working modes comprise: the method comprises the steps that a dedicated air interface signal of a first base station is sent in a first time window, a first air interface signal sent by a second base station is intercepted in a second time window, and a first working mode of a third air interface signal is sent in a third time window; a second working mode of intercepting a fourth air interface signal sent by the second base station in the first time window, sending a fifth air interface signal in the second time window and intercepting a sixth air interface signal sent by the second base station in the third time window; the fifth air interface signal includes the fourth air interface signal and an exclusive air interface signal of the first base station itself.

Optionally, after the step of listening to the first air interface signal sent by the second base station in the second time window, acquiring, according to a preset correspondence between the base station identifier and the frequency domain resource that sends the dedicated air interface signal, the dedicated frequency domain resource that corresponds to the base station identifier of the second base station and is used for sending the dedicated air interface signal of the second base station; and acquiring the information sent by the second base station according to the dedicated frequency domain resource and the sequence type sent on the dedicated frequency domain resource.

Optionally, when the information sent by the second base station includes the transmission direction of the second base station in the current time slot, determining a downlink channel quality measurement result matched with the current channel of the first base station according to the transmission direction of the second base station in the current time slot.

Optionally, in a transmission time unit for performing uplink or downlink data transmission, a third air interface signal is monitored in a third time window, where the third air interface signal at least includes the first air interface signal.

Optionally, monitoring whether an exclusive air interface signal of the first base station itself can be listened to in a first time window of a first preset transmission time unit; when the exclusive air interface signal of the first base station can be sensed, periodically changing the working mode of the second base station according to a preset period; when the exclusive air interface signal of the first base station can not be sensed, randomly changing the working mode of the second base station, and when the exclusive air interface signal of the first base station can be sensed in a second preset transmission time unit, periodically changing the working mode of the second base station according to the preset period; the preset period comprises at least one transmission time unit, and the second preset transmission time unit is larger than the first preset transmission time unit; the working modes comprise: the method comprises the steps of intercepting a dedicated air interface signal of a first base station sent by the first base station in a first time window, sending a first air interface signal in a second time window, and intercepting a third working mode of a third air interface signal in a third time window; a fourth working mode of sending a dedicated air interface signal of the second base station per se in the first time window, monitoring a fifth air interface signal sent by the first base station in the second time window, and sending a sixth air interface signal in the third time window; wherein the sixth air interface signal at least comprises the fifth air interface signal.

Optionally, after the step of listening to the dedicated air interface signal of the first base station itself sent by the first base station in the first time window, acquiring, according to a preset correspondence between the base station identifier and the frequency domain resource that sends the dedicated air interface signal, the dedicated frequency domain resource that corresponds to the base station identifier of the first base station and is used for sending the dedicated air interface signal of the first base station itself; and acquiring the information sent by the first base station according to the dedicated frequency domain resource and the sequence type sent on the dedicated frequency domain resource.

Optionally, when the information sent by the first base station includes the transmission direction of the first base station in the current time slot, determining, according to the transmission direction of the first base station in the current time slot, a downlink channel quality measurement result matched with the current channel of the second base station.

While the preferred embodiments of the present invention have been described, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention as defined in the following claims.

Claims

1. A communication method between base stations is applied to a first base station, and is characterized in that the communication method comprises the following steps:

in a transmission time unit for uplink or downlink data transmission, sending a dedicated air interface signal of a first base station at a first time window, and intercepting a first air interface signal sent by a second base station at a second time window; the first air interface signal comprises a second air interface signal sensed by a second base station and an exclusive air interface signal of the second base station;

monitoring whether the first air interface signal can be sensed in a second time window of the first preset transmission time unit;

when the first air interface signal can be sensed, periodically changing the working mode of the first base station according to a preset period;

when the first air interface signal cannot be sensed, randomly changing the working mode of the first base station, and when the first air interface signal can be sensed in a second preset transmission time unit, periodically changing the working mode of the first base station according to the preset period; wherein the content of the first and second substances,

the preset period includes at least one transmission time unit, and the second preset transmission time unit is larger than the first preset transmission time unit.

2. The communication method according to claim 1, further comprising:

and sending a third air interface signal in a third time window in a transmission time unit for uplink or downlink data transmission, wherein the third air interface signal at least comprises the first air interface signal.

3. The communication method according to claim 2, wherein the operation mode comprises: the method comprises the steps that a dedicated air interface signal of a first base station is sent in a first time window, a first air interface signal sent by a second base station is intercepted in a second time window, and a first working mode of a third air interface signal is sent in a third time window; a second working mode of intercepting a fourth air interface signal sent by the second base station in the first time window, sending a fifth air interface signal in the second time window and intercepting a sixth air interface signal sent by the second base station in the third time window; wherein the content of the first and second substances,

the fifth air interface signal includes the fourth air interface signal and an exclusive air interface signal of the first base station itself.

4. The communication method according to claim 1, further comprising:

acquiring a dedicated frequency domain resource corresponding to the base station identifier of the second base station and used for sending the dedicated air interface signal of the second base station according to a preset corresponding relation between the base station identifier and the frequency domain resource for sending the dedicated air interface signal;

and acquiring the information sent by the second base station according to the dedicated frequency domain resource and the sequence type sent on the dedicated frequency domain resource.

5. The communication method according to claim 4, wherein the information transmitted by the second base station comprises the transmission direction of the second base station in the current time slot; wherein the content of the first and second substances,

when the dedicated frequency domain resource is a first frequency domain resource and the sequence type sent on the first frequency domain resource is a first sequence type, the transmission direction of the second base station at the current time slot is an uplink transmission direction; when the dedicated frequency domain resource is a second frequency domain resource and the sequence type sent on the second frequency domain resource is a second sequence type, the transmission direction of the second base station at the current time slot is a downlink transmission direction; and when the dedicated frequency domain resource is a third frequency domain resource and the sequence type sent by the third frequency domain resource is a third sequence type, the second base station is in an idle state in the current time slot.

6. The communication method according to claim 5, wherein when the information transmitted by the second base station includes the transmission direction of the second base station in the current time slot, the communication method further comprises:

and determining a downlink channel quality measurement result matched with the current channel of the first base station according to the transmission direction of the second base station in the current time slot.

7. A communication method between base stations is applied to a second base station, and is characterized in that the communication method comprises the following steps:

in a transmission time unit for uplink or downlink data transmission, a dedicated air interface signal of a first base station sent by the first base station is intercepted in a first time window, and the first air interface signal is sent in a second time window; the first air interface signal comprises a second air interface signal sensed by a second base station and an exclusive air interface signal of the second base station;

monitoring whether an exclusive air interface signal of a first base station can be sensed in a first time window of a first preset transmission time unit;

when the exclusive air interface signal of the first base station can be sensed, periodically changing the working mode of the second base station according to a preset period;

when the exclusive air interface signal of the first base station can not be sensed, randomly changing the working mode of the second base station, and when the exclusive air interface signal of the first base station can be sensed in a second preset transmission time unit, periodically changing the working mode of the second base station according to the preset period; wherein the content of the first and second substances,

8. The communication method according to claim 7,

the working modes comprise: the method comprises the steps of intercepting a dedicated air interface signal of a first base station sent by the first base station in a first time window, sending a first air interface signal in a second time window, and intercepting a third working mode of a third air interface signal in a third time window; a fourth working mode of sending a dedicated air interface signal of the second base station per se in the first time window, monitoring a fifth air interface signal sent by the first base station in the second time window, and sending a sixth air interface signal in the third time window; wherein the content of the first and second substances,

the sixth air interface signal at least comprises the fifth air interface signal.

9. The communication method according to claim 7, further comprising:

acquiring a dedicated frequency domain resource corresponding to the base station identifier of the first base station and used for sending the dedicated air interface signal of the first base station according to a preset corresponding relation between the base station identifier and the frequency domain resource for sending the dedicated air interface signal;

and acquiring the information sent by the first base station according to the dedicated frequency domain resource and the sequence type sent on the dedicated frequency domain resource.

10. The communication method according to claim 9, wherein the information transmitted by the first base station includes the transmission direction of the first base station in the current time slot; wherein the content of the first and second substances,

when the dedicated frequency domain resource is a first frequency domain resource and the sequence type sent on the first frequency domain resource is a first sequence type, the transmission direction of the first base station at the current time slot is an uplink transmission direction; when the dedicated frequency domain resource is a second frequency domain resource and the sequence type sent on the second frequency domain resource is a second sequence type, the transmission direction of the first base station at the current time slot is a downlink transmission direction; and when the exclusive frequency domain resource is a third frequency domain resource and the sequence type sent by the third frequency domain resource is a third sequence type, the first base station is in an idle state in the current time slot.

11. The communication method according to claim 10, wherein when the information transmitted by the first base station includes the transmission direction of the first base station in the current time slot, the communication method further comprises:

and determining a downlink channel quality measurement result matched with the current channel of the second base station according to the transmission direction of the first base station in the current time slot.

12. An inter-base station communication apparatus applied to a first base station, the communication apparatus comprising:

a signal transmission module, configured to send, in a transmission time unit for performing uplink or downlink data transmission, a dedicated air interface signal of a first base station itself in a first time window, and listen to a first air interface signal sent by a second base station in a second time window; the first air interface signal comprises a second air interface signal listened by a second base station and an exclusive air interface signal of the second base station;

13. An inter-base station communication apparatus applied to a second base station, the communication apparatus comprising:

a signal transmission module, configured to, in a transmission time unit for performing uplink or downlink data transmission, monitor a dedicated air interface signal of a first base station itself sent by the first base station in a first time window, and send a first air interface signal in a second time window, where the first air interface signal includes a second air interface signal monitored by a second base station and the dedicated air interface signal of the second base station itself;

14. A base station, comprising a memory, a processor, a transceiver, and a computer program stored on the memory and executable on the processor; characterized in that the processor, when executing the computer program, implements the communication method according to any one of claims 1 to 6 or the communication method according to any one of claims 7 to 11.

15. A computer-readable storage medium, on which a computer program is stored, which, when being executed by a processor, carries out a communication method according to any one of claims 1 to 6 or a communication method according to any one of claims 7 to 11.