WO2017049631A1

WO2017049631A1 - Communication signal processing method and device, and communication server

Info

Publication number: WO2017049631A1
Application number: PCT/CN2015/090825
Authority: WO
Inventors: 官磊
Original assignee: 华为技术有限公司
Priority date: 2015-09-25
Filing date: 2015-09-25
Publication date: 2017-03-30
Also published as: CN107148801A; CN107148801B

Abstract

Disclosed are a communication signal processing method and device, and a communication server. The method comprises: determining a first time point preconfigured in a first subframe, the first time point being a first candidate transmitting time point for transmitting a first communication signal; performing idle channel detection on the to-be-transmitted first communication signal prior to the first time point; determining, according to the result of the idle channel detection, a second time point at which a signal can be transmitted; determining an occasion for transmitting the first communication signal, on the basis of the determined first and second time points. Embodiments of the present invention can effectively ensure transmission of important communication signals such as DRS, and increases the transmission efficiency of signals such as DRS.

Description

Communication signal processing method, device and communication server

Technical field

The present invention relates to the field of communications technologies, and in particular, to a communication signal processing method and apparatus, and a communication server.

Background technique

LTE (Long Term Evolution) system is based on OFDMA (Orthogonal Frequency Division Multiplexing Access) technology. The transmission of services in the LTE system is based on base station scheduling. The basic time unit of scheduling is one. The frame has a time length of 1 millisecond, one subframe includes 14 OFDM symbols for a normal cyclic prefix case, and 12 OFDM symbols for an extended cyclic prefix case. The specific scheduling process is that the base station sends a control channel, and the control channel can carry scheduling information of a PDSCH (Physical Downlink Shared Channel) or a PUSCH (Physical Uplink Shared Channel), and the scheduling information includes resource allocation. Control information such as information, modulation and coding methods.

The spectrum deployed by the serving cell of the existing LTE system is the licensed spectrum, that is, it can only be used by the carrier network that purchased the licensed spectrum. Unattended spectrum is gaining increasing attention because unlicensed spectrum does not require purchase and is available to any operator or organization. Therefore, the LTE system uses an unlicensed spectrum as an evolution direction, and an LTE system deployed on an unlicensed spectrum is called a U-LTE (Unlicensed LTE) system.

Before the base station sends a signal on the channel where the serving cell is located, it is required to perform a CCA (Clear Channel Assessment) detection on the channel where the serving cell is located. If the detected received power exceeds a certain threshold, the base station cannot temporarily be in the channel. Send a signal on. The base station can send a signal on the channel until it finds that a certain channel is idle.

How to efficiently transmit communication signals on LTE or U-LTE carriers, especially to transmit important signals such as Discovery Reference Signal (DRS) for cell discovery and measurement, is a research hotspot.

Summary of the invention

The technical problem to be solved by the present invention is to provide a method, a device and a network device for processing a communication signal, which can efficiently transmit a communication signal in a subframe.

In order to solve the above technical problem, in one aspect, an embodiment of the present invention provides a method for processing a communication signal, including:

Determining a first time point pre-configured in the first subframe, the first time point being a first candidate transmission time point for transmitting the first communication signal;

Performing idle channel detection for the first communication signal to be transmitted before the first time point;

Determining a second time point at which the signal can be transmitted according to the result of the idle channel detection;

Sending the first communication signal from the first time point if the second time point is the same as the time of the first time point; or

And if the second time point is before the time of the first time point, transmitting a channel occupation signal from the second time point to a time period ending with the first time point, and from the first The first communication signal is transmitted at a time point.

With reference to the first aspect, in a first possible implementation manner of the first aspect, the determining, according to the result of the idle channel detection, the second time point of the transmittable signal includes:

Determining whether the result of the idle channel detection indicates that the channel is idle;

If the judgment result indicates that the channel is idle, the second time point is further determined.

With reference to the first possible implementation manner of the first aspect, in a second possible implementation manner of the first aspect, the determining, by the second time point of the transmittable signal, includes:

Determining, in the first subframe, a second time point at which the signal can be sent, and the second time point is not earlier than the third time point;

The third time point is the second candidate transmission time point in the first subframe, and the second candidate transmission time point is: before the time of the first candidate transmission time point, and is The last time point of the time in the candidate transmission time point for transmitting the second communication signal predefined in the first subframe.

In conjunction with the first possible implementation of the first aspect, in a third possible implementation of the first aspect, the determining, by the second time point of the transmittable signal, includes:

Determining, in the second subframe, a second time point of the transmittable signal, and the second time point is not earlier than the third time point, where the second subframe is the previous one of the first subframe frame;

The third time point is a second candidate transmission time point in the second subframe, and the second candidate transmission time point is a predefined second communication signal in the second subframe. The last time point of the moment in the candidate time point.

With reference to the first aspect, in a fourth possible implementation manner of the first aspect, the performing the idle channel detection for the first communications signal to be sent before the first time point includes:

Determining a starting time point at which idle channel detection is performed for the first communication signal to be transmitted;

Performing idle channel detection for the first communication signal to be transmitted starting at a determined starting time point;

The start time point is in the first subframe, and the start time point is not earlier than the third time point, and the third time point is the second candidate in the first subframe. Sending a time point, the second candidate sending time point is: before the time of the first candidate sending time point, and is a candidate sending time for transmitting the second communication signal predefined in the first subframe The last point in time at the moment.

With reference to the first aspect, in a fifth possible implementation manner of the first aspect, the performing the idle channel detection for the first communications signal to be sent before the first time point includes:

The start time point is in the second subframe, and the start time point is not earlier than the third time point, and the second subframe is the previous subframe of the first subframe. The third time point is a second candidate transmission time point in the second subframe, and the second candidate transmission time point is a candidate for pre-defined second communication signal in the second subframe. The last point in time at the time.

Combining the first aspect or the first possible implementation of the first aspect or the second possible implementation of the first aspect or the third possible implementation of the first aspect or the fourth possible implementation of the first aspect In a sixth possible implementation manner of the first aspect, the method further includes:

Performing idle channel detection for the second communication signal;

Wherein, the policy performed by the idle channel detection performed for the second communication signal is different from the policy performed for performing the idle channel detection for the first communication signal.

In conjunction with the sixth possible implementation of the first aspect, the seventh possible implementation in the first aspect In the method, the method further includes:

After performing the idle channel detection for the first communication signal, in the process of transmitting the first communication signal, suspending the backoff count of the backoff counter for the idle channel detection performed by the second communication signal, The current count value of the backoff counter is greater than 0 integer;

If the first communication signal is transmitted, the back-off counter of the back-off counter of the idle channel detection performed by the second communication signal is restored, and the back-counting is started from the current count value.

In conjunction with the sixth possible implementation of the first aspect, in an eighth possible implementation manner of the first aspect, the method further includes: sending the second time period during the sending of the first communications signal Communication signal.

Combining the first aspect or the first possible implementation of the first aspect or the second possible implementation of the first aspect or the third possible implementation of the first aspect or the fourth possible implementation of the first aspect Implementation or a fifth possible implementation of the first aspect or a sixth possible implementation of the first aspect or a seventh possible implementation of the first aspect or an eighth possible implementation of the first aspect In a ninth possible implementation manner of the first aspect, the first communication signal includes a discovery reference signal, and the second communication signal includes at least one of: a control channel, a data channel, A reference signal other than the reference signal is found.

A second aspect of the embodiments of the present invention provides a communications apparatus, including:

a first determining module, configured to determine a first time point pre-configured in the first subframe, where the first time point is a first candidate sending time point for transmitting the first communication signal;

a detecting module, configured to perform idle channel detection for the first communication signal to be sent before the first time point;

a second determining module, configured to determine, according to the result of the idle channel detection, a second time point of the transmittable signal;

a processing module, configured to send the first communication signal from the first time point if the second time point is the same as the time of the first time point; or if the second time point is Before the time of the first time point, the channel occupancy signal is sent from the second time point to the end of the first time point, and the first time is sent from the first time point. Communication signal.

With reference to the second aspect, in a first possible implementation manner of the second aspect, the second determining mode The block includes:

a determining unit, configured to determine whether the result of the idle channel detection indicates that the channel is idle;

And a determining unit, configured to determine a second time point of the transmittable signal when the determination result of the determining unit indicates that the channel is idle.

With reference to the first possible implementation of the second aspect, in a second possible implementation manner of the first aspect, the second determining module is specifically configured to determine, in the first subframe, a transmittable signal a second time point, and the second time point is not earlier than the third time point;

In conjunction with the first possible implementation of the second aspect, in a third possible implementation manner of the first aspect, the second determining module is specifically configured to determine, in the second subframe, a transmittable signal a second time point, and the second time point is not earlier than the third time point, where the second subframe is the previous subframe of the first subframe;

With reference to the second aspect, in a fourth possible implementation manner of the second aspect, the detecting module is specifically configured to determine a start time point of performing idle channel detection for the first communication signal to be sent; Starting point of time begins to perform idle channel detection for the first communication signal to be transmitted; wherein the starting time point is in the first subframe, and the starting time point is not earlier than the third a time point, the third time point is a second candidate transmission time point in the first subframe, and the second candidate transmission time point is: before the time of the first candidate transmission time point, and a time point at the last time of the candidate in the candidate transmission time point for transmitting the second communication signal in the first subframe.

With reference to the second aspect, in a fifth possible implementation manner of the second aspect, the detecting module is specifically configured to determine a start time point of performing idle channel detection for the first communication signal to be sent; Starting point of time begins to perform idle channel detection for the first communication signal to be transmitted;

The start time point is in the second subframe, and the start time point is not earlier than the third time. At a time point, the second subframe is a previous subframe of the first subframe; the third time point is a second candidate transmission time point in the second subframe, and the second candidate transmission time The point is the last time point of the time in the candidate time point for transmitting the second communication signal in the second subframe.

Combining the second aspect or the first possible implementation of the second aspect or the second possible implementation of the second aspect or the third possible implementation of the second aspect or the fourth possible implementation of the second aspect In a sixth possible implementation manner of the second aspect, the detecting module is further configured to perform idle channel detection for the second communication signal, where The policy performed by the idle channel detection performed by the second communication signal is different from the policy performed to perform idle channel detection for the first communication signal.

With reference to the sixth possible implementation of the second aspect, in a seventh possible implementation manner of the second aspect, the processing module is further configured to: after performing idle channel detection successfully for the first communications signal, send During the process of the first communication signal, the backoff count of the backoff counter for the idle channel detection performed by the second communication signal is suspended, and the current count value of the backoff counter is greater than 0 integer; After the first communication signal is transmitted, the back-off count of the back-off counter of the idle channel detection performed by the second communication signal is restored, and the back-counting is started from the current count value.

With reference to the sixth possible implementation of the second aspect, in the eighth possible implementation manner of the second aspect, the processing module is further configured to send the first time period during the sending of the first communications signal Two communication signals.

A third aspect of the embodiments of the present invention provides a communication server, including: a processor and a transceiver;

The transceiver device is connected to the processor, and configured to send a signal to be sent indicated by the processor;

The processor is configured to determine a first time point pre-configured in the first subframe, where the first time point is a first candidate sending time point for transmitting the first communication signal; before the first time point Performing idle channel detection for the first communication signal to be transmitted; determining a second time point of the transmittable signal according to the result of the idle channel detection; if the second time point is the first time point and the first time point When the time is the same, the first communication signal is sent from the first time point by the transceiver; or, if the second time point is before the time of the first time point, Transmitting a channel occupation signal by the transceiver device from a time point beginning to a time point of the first time point And transmitting the first communication signal through the transceiver from the first time point.

The embodiments of the present invention can more effectively ensure the transmission of important communication signals such as DRS, and improve the transmission efficiency of signals such as DRS.

DRAWINGS

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the description of the prior art will be briefly described below. Obviously, the drawings in the following description are only It is a certain embodiment of the present invention, and other drawings can be obtained from those skilled in the art without any creative work.

1 is a schematic flow chart of a method for processing a communication signal according to an embodiment of the present invention;

2 is a schematic flow chart of another method for processing a communication signal according to an embodiment of the present invention;

3 is a schematic diagram of a specific subframe for transmitting a DRS according to an embodiment of the present invention;

4 is a schematic diagram of another specific subframe for transmitting a DRS according to an embodiment of the present invention;

FIG. 5 is a schematic flowchart diagram of still another method for processing a communication signal according to an embodiment of the present invention; FIG.

6 is a schematic flow chart of a fourth embodiment of a method for processing a communication signal according to the present invention;

FIG. 7 is a schematic diagram of another specific subframe for transmitting a DRS according to an embodiment of the present invention; FIG.

8 is a schematic flow chart of a fifth embodiment of a method for processing a communication signal according to the present invention;

FIG. 9 is a schematic diagram of still another specific subframe for transmitting a DRS according to an embodiment of the present invention; FIG.

FIG. 10 is a schematic structural diagram of a communication apparatus according to an embodiment of the present invention; FIG.

11 is a schematic structural diagram of another communication apparatus according to an embodiment of the present invention;

FIG. 12 is a schematic structural diagram of a communication server according to an embodiment of the present invention.

detailed description

The technical solutions in the embodiments of the present invention are clearly and completely described in the following with reference to the accompanying drawings in the embodiments of the present invention. It is obvious that the described embodiments are only a part of the embodiments of the present invention, but not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative efforts are within the scope of the present invention.

In the embodiment of the present invention, a transmission time point for transmitting an important signal such as a reference signal DRS such as cell discovery and measurement is configured in a subframe, when performing idle channel detection and detecting an idle channel, The current time point is determined based on the configured transmission time point, and then different processing is performed; specifically, when the time point when detecting the idle channel is the same as the configured transmission time point, the current time is sent in the current subframe. If the communication signal such as DRS is different, the padding signal (channel occupation signal) is first transmitted in the current subframe, and after the transmission time point of the configuration is filled, the communication signal such as DRS is started to be transmitted in the subframe. In this way, the transmission of important communication signals such as DRS can be more effectively ensured, and the transmission efficiency of signals such as DRS can be improved.

1 is a schematic flowchart of a method for processing a communication signal according to an embodiment of the present invention. The method in the embodiment of the present invention may be implemented by a communication server on a base station side. Specifically, the method includes:

S101: Determine a first time point pre-configured in the first subframe, where the first time point is a first candidate transmission time point for transmitting the first communication signal.

One or more candidate transmission time points for transmitting the first communication signal may be configured based on the OFDM symbol, which may be referred to as a first type of candidate transmission time point, and one or more OFDM symbols specified in one subframe are used as The starting point is to transmit a first communication signal, and the time point corresponding to the specified OFDM symbol in one subframe is a candidate transmission time point for transmitting the first communication signal. For each subframe, when the candidate transmission time point for transmitting the first communication signal arrives and the channel is idle, the first communication signal may be started to start with the OFDM symbol of the corresponding time as a starting symbol according to actual needs. .

Wherein, if the time point at which the signal can be transmitted according to the channel idle detection is not at the starting point of the candidate transmit OFDM symbol used for transmitting the first communication signal, a channel occupation signal may be sent before the start point, and the channel occupancy signal The transmission may not be sent according to the starting point of the OFDM symbol.

When a plurality of OFDM symbols are designated as start symbols, the plurality of OFDM symbols may be discrete, that is, the positions of the starting OFDM symbols for transmitting the communication signals are discontinuous in one subframe, which may increase Preempt the success rate of the channel.

The base station is allowed to send a communication signal with a limited number of OFDM symbols in one subframe as a starting point, and the signaling overhead indicating the start symbols may be saved. For example, 14 symbols per subframe, requiring at least 4 bits of information If the limit is 4 symbols, only 2 bits are needed; allowing any one of the matches to be used as the starting point to send the communication signal increases the complexity of the base station in the background group. Specifically, the packet is generally advanced by half to one subframe, and the base station does not Knowing that there will be several symbols available in the subframe in which the packet will be sent in the future, it is not known when the CCA is successful.

In the embodiment of the present invention, the communication signal may be divided into: a first communication signal and a second communication signal, the first communication signal includes an important signal such as DRS; and the second communication signal includes an ordinary signal such as a normal control signal and a data signal. The first candidate transmission time point at which the first communication signal is transmitted at the first time point determined on the first subframe may be after the last candidate transmission time point for transmitting the second communication signal, or in the next subframe. The candidate transmission time point for transmitting the second communication signal may be referred to as a second type of candidate transmission time point, and the second type of candidate transmission time point corresponding to the OFDM symbol of the subframe corresponds to the first type of candidate transmission time point. The OFDM symbols of a subframe may be different.

S102: Perform idle channel detection for the first communication signal to be sent before the first time point.

Before the base station sends a signal on the channel where the serving cell of the U-LTE system is located, the base station needs to perform CCA detection on the channel where the serving cell is located. Once the detected received power exceeds a certain threshold, the base station cannot temporarily send the channel. The signal can not send a signal on the channel until the channel is found to be idle.

S103: Determine a second time point of the transmittable signal according to the result of the idle channel detection.

When the CCA detection result is that the channel is idle, the communication signal is not immediately started to be sent, and a second time point may be determined according to a certain rule, so as to determine how to transmit based on the relationship between the first time point and the second time point. The first communication signal is described.

S104: If the second time point is the same as the time of the first time point, sending the first communication signal from the first time point.

If the second time point is the same as the time of the first time point, the first communication signal is immediately transmitted in the OFDM symbol corresponding to the first time point in the subframe.

S105: If the second time point is before the time of the first time point, send a channel occupation signal from a time period from the second time point to the end of the first time point, and from the The first communication signal is transmitted at a first time point.

If the second time point is before the time of the first time point, immediately start transmitting the channel occupation signal at the second time point of the subframe, and after the time reaches the first time point, the first time in the subframe The OFDM symbol corresponding to the point starts to transmit the first communication signal.

In a specific implementation, the foregoing S104 and S105 may select only one of the manners to determine the transmission of the first communication signal.

After the base station side sends the first communication signal (significant signal) based on the foregoing manner, the UE may specifically detect the first communication signal in the subframe according to the existing detection manner. For example, for the DRS signal, the UE may be in the configured DMTC (DRS). Within the measurement timing configuration, the DRS can be detected and measured.

Specifically, for the configuration of the DRS in the important signal, generally, the period of occurrence of the DRS may be 40 ms, 80 ms, or 160 ms. Of course, a shorter or longer DRS period may also be adopted. The DRS window that appears once per cycle can occupy the length of 1 to 5 subframes. Generally, the primary and secondary synchronization channels and some reference signals for the UE to measure, such as CRS (Cell-specific Reference Signal,), are included in the DRS window. Cell-specific reference signal) and/or CSI-RS (Channel State Information Reference Signal). Based on the basic structure of the DRS, the signaling flow of the base station and the UE is: the base station configures a DMTC for the UE, which can be understood as a measurement gap of a period of 40/80/160 ms, and the DMTC is for each frequency point. To configure.

FIG. 2 is a schematic flowchart of another method for processing a communication signal according to an embodiment of the present invention. The method in the embodiment of the present invention may be implemented by a communication server on a base station side. Specifically, the method includes:

S201: Determine a first time point pre-configured in the first subframe, where the first time point is a first candidate transmission time point for transmitting the first communication signal.

The first communication signal is an important signal such as DRS. For the configuration of the DRS in the important signal, in general, the period of occurrence of the DRS may be 40 ms, 80 ms or 160 ms, although a shorter or longer DRS period may be used. The DRS window that appears once per cycle can occupy the length of 1 to 5 subframes, and generally includes one primary and secondary synchronization channel and some reference signals for the UE to perform measurement, such as CRS and/or CSI-RS, in one DRS window.

Based on the basic structure of the DRS, the signaling flow of the base station and the UE is: the base station configures a DMTC for the UE, which can be understood as a measurement gap of a period of 40/80/160 ms, and the DMTC is for each Configured by frequency. The base station determines to transmit the DRS, that is, the first communication signal, in the DMTC, and executes the S201, and the UE detects the DRS in the DMTC and performs measurement.

S202: Perform idle channel detection for the first communication signal to be sent before the first time point.

After determining the first candidate transmission time point (ie, the first time point) of transmitting the first communication signal in the S201, the CCA may be performed at any time before the first candidate transmission time point of the subframe.

In the embodiment of the present invention, the S202 may include: determining a start time point of performing idle channel detection for the first communication signal to be sent; starting, at the determined start time point, the first communication to be sent The signal performs idle channel detection.

Specifically, the determined starting time point is in the first subframe, and the starting time point is not earlier than the third time point, and the third time point is in the first subframe. a second candidate transmission time point, the second candidate transmission time point being: before the time of the first candidate transmission time point, and being predefined for transmitting the second communication signal in the first subframe The last time point of the moment in the candidate transmission time point.

Specifically, FIG. 3 shows a specific schematic diagram of a subframe for transmitting a DRS, and FIG. 3 includes four predefined candidate transmission time points for transmitting a second communication signal, wherein the last one of the four candidates is sent. The time point is determined as the second candidate transmission time point as the third time point, and the third time point may be used as the starting time point of the CCA to start performing the CCA. The advantage of determining the starting time point of the CCA in the above manner is that if the second communication signal is PDSCH earlier than the candidate transmission time point of the second communication signal, it is still possible to perform CCA in the subframe. Once successful, the PDSCH can be transmitted in the subframe according to a fallback mechanism or the like. And once the CCA of the DRS is not earlier than the latest transmission time point of the PDSCH in the subframe, it means that even if the DRS does not do CCA, the subframe cannot transmit the PDSCH. Therefore, determining the CCA start time point of the DRS based on the foregoing manner not only does not affect the transmission of the second communication signal such as the PDSCH in the current subframe, but also performs the CCA of the DRS, which is guaranteed to be at least in the next subframe. The sending of DRS.

In FIG. 3, after the CCA succeeds, the channel occupation signal is started to be filled until the determined first time point, that is, the time corresponding to the first OFDM symbol in the normal subframe, and the DRS is started to be transmitted in the subframe.

Specifically, the CCA start time point of the DRS may also be set to be not earlier than the candidate transmission time point of the latest second communication signal in the current subframe, and not later than the fourth time point, the fourth time Point to The subframe boundary of the subframe has at least an interval of N symbols, or an interval of M CCA time windows. For example, N=4, or M=4. In this way, while ensuring that the second communication signal is transmitted in the current subframe, it is possible to leave more time for the CSA of the DRS as much as possible, thereby avoiding less CCA time of the DRS in the subframe, resulting in the next subframe. If the DRS transmission is unsuccessful, it will have to wait for a DRS time window after 40/80/160ms.

Further, the determined starting time point may also be in the second subframe, and the starting time point is not earlier than the third time point, and the second subframe is the first time a previous subframe of the subframe; the third time point is a second candidate transmission time point in the second subframe, and the second candidate transmission time point is a predefined one used in the second subframe The last time point of the moment in the candidate time point at which the second communication signal is transmitted.

FIG. 4 is a schematic diagram of another specific subframe for transmitting DRS. In FIG. 4, it is assumed that subframe n+1 is a DRS subframe configuration in a pre-configured DMTC, and CCA of DRS in subframe n is unsuccessful. Then, the CSA of the DRS can be performed in the DRS subframe n+1. If the CCA is successful, the DRS of the partial subframe can be sent in the DRS subframe n+1, or a complete DRS is still sent. The signal will have a translation delay in the DMTC. The CCA start point in the DRS subframe n+1 may also be determined based on a candidate transmission time point for transmitting the second communication signal in the current subframe n+1, assuming DRS transmission in the subframe n+1 The PSS/SSS (Primary Synchronization Signal, Secondary Synchronization Signal) must be used. The CCA starting point of the DRS in the subframe n+1 is not earlier than the subframe n+1. Before the transmission point of the DRS, the candidate of the latest second communication signal is sent at the time point.

S203: Determine whether the result of the idle channel detection indicates that the channel is idle.

S204: If the judgment result indicates that the channel is idle, further determine a second time point at which the signal can be sent.

The second time point may be specifically determined in the first subframe, and the second time point is not earlier than the third time point;

Alternatively, the second time point may be determined in the second subframe, and the second time point is not earlier than the third time point, and the second subframe is the first subframe The previous subframe;

The second time point may be determined according to a predetermined determination rule, and the specific determination manner is as follows:

If the DRS needs to be sent, if the channel of the current unlicensed spectrum in the CCA time window is found to be idle during the CCA monitoring process, it can be immediately determined as the second time point.

If the DRS needs to be sent, if the channel of the current unlicensed spectrum in the CCA time window is found to be idle during the CCA monitoring process, then wait for an idle delay (generally the time is on the order of tens of microseconds). It can be immediately determined as the second time point.

If the DRS needs to be sent, if the channel of the current unlicensed spectrum in the CCA time window is found to be idle during the CCA monitoring process, no idle delay is introduced, and a high priority random backoff (priority random backoff) is introduced. The requirement for parameter selection for random backoff can be looser than normal random backoff, such as using a shorter competition window CW (Competition Window), using a shorter CCA time window, and the like.

If the DRS needs to be sent, the above-mentioned preferential random backoff process may be initiated as long as the channel is found to be idle during the CCA monitoring process, for example, selecting the initial value of the backoff counter in a smaller contention window duration; or, doing the counter In the process of reciprocal retreat, CCA monitoring is performed using a smaller CCA time window, and so on. As long as the back-off counter counts down to 0, wait for an idle delay, such as a DIFS (DCF IFS, Inter-frame interval for distributed coordination function) (DCF (Distributed Coordination Function), IFS (Inter) -frame Space, the interval between frames, or other references. Generally, this time is on the order of tens of microseconds, and DRS can be sent.

S205: If the second time point is the same as the time of the first time point, sending the first communication signal from the first time point.

S206: If the second time point is before the time of the first time point, send a channel occupation signal from a time period from the second time point to the end of the first time point, and from the The first communication signal is transmitted at a first time point.

5 is a schematic flowchart of a method for processing a communication signal according to an embodiment of the present invention. The method in the embodiment of the present invention may be implemented by a communication server on a base station side. Specifically, the method includes:

S301: Determine a first time point pre-configured in the first subframe, where the first time point is a first candidate transmission time point for transmitting the first communication signal.

S302: Perform idle channel detection for the first communication signal to be sent before the first time point.

S303: Determine whether the result of the idle channel detection indicates that the channel is idle.

S304: If the judgment result indicates that the channel is idle, further determine a second time point at which the signal can be sent.

S305: If the second time point is the same as the time of the first time point, sending the first communication signal from the first time point.

S306: If the second time point is before the time of the first time point, send a channel occupation signal from a time period from the second time point to the end of the first time point, and from the The first communication signal is transmitted at a first time point.

The first communication signal includes a discovery reference signal; the second communication signal includes at least one of: a control channel, a data channel, and a reference signal other than the discovery reference signal.

S307: Perform idle channel detection for the second communication signal.

The CCA performed for the first communication signal may be based on a high-priority detection policy, and specifically may be performed in the CCA detection process mentioned above, and the subsequent flow may be performed once the idle channel is determined. Or; in the CCA detection process, after detecting the idle channel, it is also necessary to perform idle delay, high priority random backoff, and the like.

The S307 may be executed at any time while or before the execution of the S305, S306.

S308: After performing the idle channel detection for the first communication signal, during the sending of the first communication signal, suspending the backoff count of the backoff counter for the idle channel detection performed by the second communication signal The current count value of the backoff counter is greater than 0 integer.

S309: If the first communication signal is sent, returning the back-off count of the back-off counter of the idle channel detection performed by the second communication signal, and starting the back-off counting from the current count value.

In the embodiment of the present invention, after detecting that the idle channel is detected for the second communication signal, such as a normal control signal and a data signal, a random backoff is required for a period of time, and only the channel is in the backoff time. It is idle before it can send a signal on this channel.

Specifically, if a node has a traffic load to transmit, the node needs to do CCA to monitor the busy state of the channel such as the unlicensed carrier. In order to ensure low collision between different nodes and fairness, the CCA is introduced at the same time, and a fallback mechanism is introduced, such as a random number based backoff mechanism, that is, each node is found to be idle (if a signal is detected) If the energy is lower than the preset threshold threshold, the channel may be considered idle; otherwise, the time interval of the channel is considered to be busy, waiting for a DIFS time interval (this process is called idle deferred defer), and then each backing off the CCA time window The time length (the time window is generally a few microseconds to twenty microseconds) of the random number multiple, which is the initial value of the backoff counter of the current CCA, and the value of the time length The range is 0 to the length of the contention window CW. The length of the contention window is the maximum value of the initial value of the backoff counter. Once the channel is found to be idle in a CCA time window, the counter is decremented by one. Until the counter is reduced to 0, the node can send a signal, thus solving multiple nodes and simultaneously discovering that the channel is idle, and immediately sending the respective signals at the same time to cause a collision, and The choice of the number of machines takes into account the fairness of the occupied channels between the nodes.

In the S308 and S309, the transmission of the first communication signal is preferentially processed, and the backoff timing of the second communication signal is suspended. In order to continue to transmit the second communication signal after the first communication signal is transmitted, it is not necessary to perform the CCA and the back-off counting again.

S310: Send the second communication signal during a period in which the first communication signal is sent.

After the CCA of the first communication signal is successful, the first communication signal can be sent in the subframe, generally The CCA process of the second communication signal at this time is not completed, that is, the back-off counter of the CCA of the second communication signal is not reduced to 0, because if the CCA of the second communication signal is successful, the second communication signal is simultaneously transmitted. And the first communication signal, considering that the CCA requirement of the second communication signal is more severe than the requirement of the first communication signal. Therefore, under normal circumstances, since the CCA process of the second communication signal is not completed, it is not allowed to transmit the second communication signal. However, at this time, the base station has already transmitted the first communication signal in the subframe of the DMTC, that is, the channel has been occupied, for example, the base station transmits the first communication signal in one subframe in the DMTC. Considering that the base station has occupied the current channel on the subframe in which the first communication signal is transmitted, the second communication signal may be transmitted together in the subframe in which the first communication signal is currently transmitted, but considering the CCA of the second communication signal Unsuccessful, so the second communication signal can only be transmitted during the current transmission period of the first communication signal, such as transmitting the first communication signal and the second in the subframe in which the first communication signal is transmitted in the DMTC. Communication signal.

Once the first communication signal in the DMTC period is transmitted, the second communication signal must also stop transmitting, and the value of the CCA counter that has not been reduced to 0 before recovery is resumed, and CCA is continued until the CCA is successful, and the second transmission is allowed again. Communication signal.

It should also be noted that the determination of the transmission power of the second communication signal transmitted along with the first communication signal is determined according to the current CCA process of transmitting the first communication signal, and cannot be based on the previous second communication signal. The unsuccessful CCA process is determined. Generally, the selection of the energy detection threshold of the CCA is related to the power of the transmitted signal. The higher the energy detection threshold, the lower the maximum transmission power of the transmitted signal after the CCA is successful; of course, the reverse is not excluded.

Referring to FIG. 6, FIG. 6 is a schematic flowchart diagram of a fourth embodiment of a method for processing a communication signal according to the present invention. The method in the embodiment of the present invention may be implemented by a server on a base station side. The method includes:

S401: Determine a first time point pre-configured in the first subframe, where the first time point is a first candidate transmission time point for transmitting the first communication signal.

S402: Perform idle channel detection for the first communication signal to be sent before the first time point.

S403: Determine, according to the result of the idle channel detection, a second time point in which the signal can be sent in the first subframe, and the second time point is not earlier than the third time point.

When the result of the idle channel detection indicates that the current channel is idle, the second time point is determined to be determined in the first subframe. The third time point is the second candidate transmission time point in the first subframe, and the second candidate transmission time point is: before the time of the first candidate transmission time point, and is The last time point of the time in the candidate transmission time point for transmitting the second communication signal predefined in the first subframe.

S404: If the second time point is the same as the time of the first time point, sending the first communication signal from the first time point;

S405: If the second time point is before the time of the first time point, send a channel occupation signal from a time period from the second time point to the end of the first time point, and from the The first communication signal is transmitted at a first time point.

For details, please refer to FIG. 7 , which is a schematic diagram of another specific subframe for transmitting a DRS according to an embodiment of the present invention; the DRS subframe in FIG. 7 , that is, the subframe n+1 includes four predefined ones for transmitting a second communication signal. a candidate transmission time point, which assumes that the first transmission point of the DRS, that is, the first time point is the symbol of the SSS in the subframe, and the last candidate transmission time point of the second communication signal and the last before the SSS symbol A candidate transmission time point is used as the third time point, that is, the third time point is the second candidate transmission time point of the four candidate transmission time points of the second communication signal. The third time point, the first time point, and any time point between the two are determined as the second time point. The starting time point for performing CCA detection for the DRS can be started at the third time point and any time before it. It can be seen that the earliest time point at which the channel fill signal is transmitted is the above-mentioned third time point.

FIG. 8 is a schematic flowchart of a fifth embodiment of a method for processing a communication signal according to the present invention. The method in the embodiment of the present invention may be implemented by a server on a base station side. The method includes:

S501: Determine a first time point pre-configured in the first subframe, where the first time point is a first candidate transmission time point for transmitting the first communication signal.

S502: Perform idle channel detection for the first communication signal to be sent before the first time point.

S503: Determine, according to the result of the idle channel detection, a second time point of the transmittable signal in the second subframe, and the second time point is not earlier than the third time point, the second subframe Is the previous subframe of the first subframe.

When the result of the idle channel detection indicates that the current channel is idle, that is, starting in the first subframe Determine the second time point. The third time point is a second candidate transmission time point in the second subframe, and the second candidate transmission time point is a predefined second communication signal in the second subframe. The last time point of the moment in the candidate time point.

S504: If the second time point is the same as the time of the first time point, sending the first communication signal from the first time point; or

S505: If the second time point is before the time of the first time point, send a channel occupation signal from a time period from the second time point to the end of the first time point, and from the The first communication signal is transmitted at a first time point.

FIG. 9 is a schematic diagram of another specific subframe for transmitting a DRS according to an embodiment of the present invention; FIG. 9 includes four predefined candidate transmission time points for transmitting a second communication signal in subframe n. The last one of the four candidate transmission time points is taken as the third time point, and the third time point, the first time point, and any time point between the two are determined as the second time point. The starting time point for performing CCA detection for the DRS can be started at the third time point and any time before it. In FIG. 9, the third time point is determined at the last candidate transmission time point, and one OFDM symbol corresponding time before the third time point is the CCA start time point, and the seventh OFDM time corresponding to the third time point is corresponding. It is the second time point (later than the third time point). It can be seen that the earliest time point at which the channel fill signal is transmitted is the above-mentioned third time point.

The communication device and the communication server of the embodiment of the present invention will be described in detail below.

FIG. 10 is a schematic structural diagram of a communication apparatus according to an embodiment of the present invention. The communication apparatus in the embodiment of the present invention may be configured in a communication server on a base station side. Specifically, the apparatus includes: a first determining module 10, and detecting The module 20, the second determining module 30, and the processing module 40.

The first determining module 10 is configured to determine a first time point pre-configured in the first subframe, where the first time point is a first candidate sending time point for transmitting the first communication signal;

The detecting module 20 is configured to perform idle channel detection for the first communication signal to be sent before the first time point;

The second determining module 30 is configured to determine, according to the result of the idle channel detection, a second time point of the transmittable signal;

The processing module 40 is configured to: if the second time point is the same as the time of the first time point, send the first communication signal from the first time point; or if the second Time Before the moment of the first time point, the channel occupancy signal is transmitted from the second time point to the end of the first time point, and the transmission is started from the first time point. The first communication signal is described.

One or more candidate transmission time points for transmitting the first communication signal may be configured based on the OFDM symbol, which may be referred to as a first type of candidate transmission time point, and one or more OFDM symbols specified in one subframe are used as The starting point is to transmit a first communication signal, and the time point corresponding to the specified OFDM symbol in one subframe is a candidate transmission time point for transmitting the first communication signal. For each subframe, when the candidate transmission time point for transmitting the first communication signal arrives and the channel is idle, the communication signal can be started to start with the OFDM symbol of the corresponding time as the starting symbol according to actual needs.

In the embodiment of the present invention, the communication signal may be divided into: a first communication signal and a second communication signal, the first communication signal includes an important signal such as DRS; and the second communication signal includes an ordinary signal such as a normal control signal and a data signal. The first candidate transmission time point at which the first determining module 10 determines the first time point based on the subframe, that is, the first communication transmission time point may be after the last candidate transmission time point for transmitting the second communication signal, or in the next In the sub-frame. The candidate transmission time point for transmitting the second communication signal may be referred to as a second type of candidate transmission time point, and the second type of candidate transmission time point corresponding to the OFDM symbol of the subframe corresponds to the first type of candidate transmission time point. The OFDM symbols of a subframe may be different.

Before the base station sends a signal on the channel where the serving cell of the U-LTE system is located, the detecting module 20 performs CCA detection on the channel where the serving cell is located, and once the detected received power exceeds a certain threshold, the base station temporarily cannot A signal is transmitted on the channel until the channel is found to be idle, and the base station can transmit a signal on the channel.

When the CCA detection result is that the channel is idle, the communication signal is not immediately started to be sent, and the second determining module 30 may determine a second time point, so that the processing module 40 determines based on the first determining module 10 A relationship between a point in time and a second point in time determined by the second determining module 30 determines how to transmit the first communication signal.

If the second time point is the same as the time of the first time point, the processing module 40 immediately controls to start transmitting the first communication signal in the OFDM symbol corresponding to the first time point in the subframe.

If the second time point is before the time of the first time point, the processing module 40 immediately controls to start transmitting the channel occupation signal at the second time point of the subframe, and after the time reaches the first time point, The processing module 40 controls to start transmitting the first communication signal in the OFDM symbol corresponding to the first time point in the subframe.

FIG. 11 is a schematic structural diagram of another communication apparatus according to an embodiment of the present invention. The communication apparatus in the embodiment of the present invention may be disposed in a communication server on a base station side. Specifically, the apparatus includes a previous implementation. The first determining module 10, the detecting module 20, the second determining module 30, and the processing module 40 in the example. The first determining module 10, the detecting module 20, the second determining module 30, and the processing module 40 in the embodiment of the present invention may further perform the following functions.

Specifically, the second determining module 30 of the embodiment of the present invention may include:

The determining unit 301 is configured to determine whether the result of the idle channel detection indicates that the channel is idle;

The determining unit 302 is configured to determine a second time point of the transmittable signal when the determination result of the determining unit indicates that the channel is idle.

Optionally, the second determining module 30 is configured to determine, in the first subframe, a second time point of the transmittable signal, and the second time point is not earlier than the third time point; The third time point is a second candidate transmission time point in the first subframe, and the second candidate transmission time point is: before the time of the first candidate transmission time point, and is the The last time point of the time in the candidate transmission time point for transmitting the second communication signal in the first subframe.

Optionally, the second determining module 30 is specifically configured to determine, in the second subframe, a second time point of the transmittable signal, and the second time point is not earlier than the third time point, The second subframe is the previous subframe of the first subframe; wherein the third time point is the second candidate in the second subframe a transmission time point, where the second candidate transmission time point is a time point of the last time of the candidate time point for transmitting the second communication signal in the second subframe.

The second determining module 30 can simultaneously implement the functions mentioned above as needed.

Further, optionally, the detecting module 20 in the embodiment of the present invention is specifically configured to determine a starting time point of performing idle channel detection for the first communication signal to be sent, and start at a determined starting time point. The first communication signal to be transmitted performs idle channel detection; wherein the start time point is in the first subframe, and the start time point is not earlier than a third time point, the third The time point is a second candidate transmission time point in the first subframe, and the second candidate transmission time point is: before the time of the first candidate transmission time point, and is in the first subframe A predefined time point of the time in the candidate transmission time point for transmitting the second communication signal.

Further, optionally, the detecting module 20 in the embodiment of the present invention is specifically configured to determine a starting time point of performing idle channel detection for the first communication signal to be sent, and start at a determined starting time point. The first communication signal to be transmitted performs idle channel detection; wherein the start time point is in the second subframe, and the start time point is not earlier than the third time point, the second The subframe is the previous subframe of the first subframe; the third time point is the second candidate transmission time point in the second subframe, and the second candidate transmission time point is the second subframe The last time point of the time in the candidate for the second communication signal to be transmitted in the frame.

Further, optionally, the detecting module 20 in the embodiment of the present invention is further configured to perform idle channel detection for the second communication signal, where the policy performed by the idle channel detection performed by the second communication signal is The strategy performed by the first communication signal to perform idle channel detection is different.

Further, the processing module 40 in the embodiment of the present invention is further configured to: when the first communication signal is sent after performing the idle channel detection for the first communication signal, the suspension is the a back-off count of the back-off counter of the idle channel detection performed by the second communication signal, the current count value of the back-off counter is greater than 0 integer; if the first communication signal is sent, returning to the second The back-off counter of the back-off counter of the idle channel detection performed by the communication signal, and the back-off count is started from the current count value.

Further, optionally, the processing module 40 in the embodiment of the present invention is further configured to send the second communication signal in a time period during which the first communication signal is sent.

Specifically, the specific implementation of each module and unit in the embodiment of the present invention may refer to FIG. 1 to FIG. 5 . A detailed description of the relevant steps.

Referring to FIG. 12, it is a schematic structural diagram of a communication server according to an embodiment of the present invention. The communication server may be configured on a base station side. Specifically, the communication server includes: a network interface 1102, a processor 1104, a transceiver device, and an antenna 1112. And a memory 1114, wherein the transceiver device includes a transmitter 1106, a receiver 1108, and a coupler 1110.

The transceiver is connected to the processor 1104, and configured to send a signal to be sent indicated by the processor 1104.

The processor 1104 is configured to determine a first time point pre-configured in the first subframe, where the first time point is a first candidate sending time point for transmitting the first communication signal; at the first time point Performing idle channel detection for the first communication signal to be transmitted; determining a second time point of the transmittable signal according to the result of the idle channel detection; if the second time point and the first time point If the time is the same, the first communication signal is sent from the first time point by the transceiver; or if the second time point is before the time of the first time point, And transmitting, by the transceiver device, a channel occupation signal in a period from the second time point to the end of the first time point, and transmitting the first communication signal by using the transceiver device from the first time point.

Further, the processor 1104 is configured to determine whether the result of the idle channel detection indicates that the channel is idle, when the second time point of the transmittable signal is determined according to the result of the idle channel detection. If the judgment result indicates that the channel is idle, the second time point at which the signal can be transmitted is further determined.

Further, optionally, the processor 1104 is configured to determine, in the first subframe, a second time point of the transmittable signal, and the second time point is not earlier than the third time point; The third time point is the second candidate transmission time point in the first subframe, and the second candidate transmission time point is: before the time of the first candidate transmission time point, and is the first time The last time point of the time in the candidate transmission time point for transmitting the second communication signal, which is predefined in the subframe.

Further, optionally, the processor 1104 is configured to determine, in the second subframe, a second time point of the transmittable signal, and the second time point is not earlier than the third time point, where the Two sub-frames a first subframe of the first subframe, where the third time point is a second candidate transmission time point in the second subframe, and the second candidate transmission time point is in the second subframe The predefined time point of the moment in the candidate time point for transmitting the second communication signal.

Further optionally, the processor 1104 is specifically configured to determine the first communication to be sent when performing idle channel detection for the first communication signal to be sent before the first time point. a start time point at which the signal performs idle channel detection; performing idle channel detection for the first communication signal to be transmitted starting at the determined start time point; wherein the start time point is in the first subframe And the starting time point is not earlier than the third time point, the third time point is a second candidate sending time point in the first subframe, and the second candidate sending time point is: Before the time of the first candidate transmission time point, and is the last time point of the time of the candidate transmission time point for transmitting the second communication signal in the first subframe.

Further optionally, the processor 1104 is specifically configured to determine the first communication to be sent when performing idle channel detection for the first communication signal to be sent before the first time point. Generating a start time point of the idle channel detection; performing idle channel detection for the first communication signal to be transmitted starting at the determined start time point; wherein the start time point is in the second subframe And the starting time point is not earlier than the third time point, the second subframe is the previous subframe of the first subframe; and the third time point is the second subframe And a second candidate transmission time point, where the second candidate transmission time point is the last time point of the candidate time point for transmitting the second communication signal in the second subframe.

Further optionally, the processor 1104 is further configured to perform idle channel detection for the second communication signal; wherein, a policy performed by the idle channel detection performed by the second communication signal is performed for the first communication signal The strategy performed by idle channel detection is different.

Further, optionally, the processor 1104 is further configured to suspend execution of the second communication signal during the sending of the first communication signal after performing idle channel detection for the first communication signal. a backoff count of the backoff counter of the idle channel detection, the current count value of the backoff counter is greater than 0 integer; if the first communication signal is sent, the idle channel detection performed for the second communication signal is restored The backoff counter counts back and the backcount is counted from the current count value.

Further optionally, the processor 1104 is further configured to: when the first communication signal is sent The second communication signal is transmitted by the transceiver device in the segment.

Specifically, the specific implementation of the processor 1104 in the embodiment of the present invention may refer to the specific description of the related steps and functional modules in FIG. 1 to FIG.

Through the description of the above embodiments, those skilled in the art can clearly understand that the various embodiments can be implemented by means of software plus a necessary general hardware platform, and of course, by hardware. Based on such understanding, the above-described technical solutions may be embodied in the form of software products in essence or in the form of software products, which may be stored in a computer readable storage medium such as ROM/RAM, magnetic Discs, optical discs, etc., include instructions for causing a computer device (which may be a personal computer, server, or network device, etc.) to perform the methods described in various embodiments or portions of the embodiments.

The embodiments described above do not constitute a limitation on the scope of protection of the technical solutions. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the above-described embodiments are intended to be included within the scope of the technical solutions.

Claims

A method for processing a communication signal, comprising:

Determining a first time point pre-configured in the first subframe, the first time point being a first candidate transmission time point for transmitting the first communication signal;

Performing idle channel detection for the first communication signal to be transmitted before the first time point;

Determining a second time point at which the signal can be transmitted according to the result of the idle channel detection;

Sending the first communication signal from the first time point if the second time point is the same as the time of the first time point; or

And if the second time point is before the time of the first time point, transmitting a channel occupation signal from the second time point to a time period ending with the first time point, and from the first The first communication signal is transmitted at a time point.
The method of claim 1, wherein the determining, according to the result of the idle channel detection, the second time point of the transmittable signal comprises:

Determining whether the result of the idle channel detection indicates that the channel is idle;

If the result of the judgment indicates that the channel is idle, the second time point at which the signal can be transmitted is further determined.
The method of claim 1 or 2, wherein the determining the second time point at which the signal can be transmitted comprises:

Determining, in the first subframe, a second time point at which the signal can be sent, and the second time point is not earlier than the third time point;

The third time point is the second candidate transmission time point in the first subframe, and the second candidate transmission time point is: before the time of the first candidate transmission time point, and is The last time point of the time in the candidate transmission time point for transmitting the second communication signal predefined in the first subframe.
The method of claim 1 or 2, wherein the determining the second time point at which the signal can be transmitted comprises:

Determining a second time point in the second subframe, and the second time point is not earlier than the third time point, where the second subframe is a previous subframe of the first subframe;

The third time point is a second candidate transmission time point in the second subframe, and the second candidate transmission time point is a predefined second communication signal in the second subframe. The last time point of the moment in the candidate time point.
The method of claim 1, wherein the performing the idle channel detection for the first communication signal to be transmitted before the first time point comprises:

Determining a starting time point at which idle channel detection is performed for the first communication signal to be transmitted;

Performing idle channel detection for the first communication signal to be transmitted starting at a determined starting time point;

The start time point is in the first subframe, and the start time point is not earlier than the third time point, and the third time point is the second candidate in the first subframe. Sending a time point, the second candidate sending time point is: before the time of the first candidate sending time point, and is a candidate sending time for transmitting the second communication signal predefined in the first subframe The last point in time at the moment.
The method of claim 1, wherein the performing the idle channel detection for the first communication signal to be transmitted before the first time point comprises:

Determining a starting time point at which idle channel detection is performed for the first communication signal to be transmitted;

Performing idle channel detection for the first communication signal to be transmitted starting at a determined starting time point;

The start time point is in the second subframe, and the start time point is not earlier than the third time point, and the second subframe is the previous subframe of the first subframe. The third time point is a second candidate transmission time point in the second subframe, and the second candidate transmission time point is a candidate for pre-defined second communication signal in the second subframe. The last point in time at the time.
The method of any of claims 1 to 6, wherein the method further comprises:

Performing idle channel detection for the second communication signal;

Wherein the strategy performed by the idle channel detection performed for the second communication signal is The strategy performed by a communication signal to perform idle channel detection is different.
The method of claim 7 further comprising:

After performing the idle channel detection for the first communication signal, in the process of transmitting the first communication signal, suspending the backoff count of the backoff counter for the idle channel detection performed by the second communication signal, The current count value of the backoff counter is an integer greater than 0;

If the first communication signal is transmitted, the back-off counter of the back-off counter of the idle channel detection performed by the second communication signal is restored, and the back-counting is started from the current count value.
The method of claim 7 wherein the method further comprises:

Transmitting the second communication signal during a period in which the first communication signal is transmitted.
The method according to any one of claims 1 to 9, wherein the first communication signal comprises a discovery reference signal; the second communication signal comprises at least one of: a control channel, a data channel, A reference signal other than the discovery reference signal.
A communication device, comprising:

a first determining module, configured to determine a first time point pre-configured in the first subframe, where the first time point is a first candidate sending time point for transmitting the first communication signal;

a detecting module, configured to perform idle channel detection for the first communication signal to be sent before the first time point;

a second determining module, configured to determine, according to the result of the idle channel detection, a second time point of the transmittable signal;

a processing module, configured to send the first communication signal from the first time point if the second time point is the same as the time of the first time point; or if the second time point is Before the time of the first time point, the channel occupancy signal is sent from the second time point to the end of the first time point, and the first time is sent from the first time point. Communication signal.
The apparatus of claim 11, wherein the second determining module comprises:

a determining unit, configured to determine whether the result of the idle channel detection indicates that the channel is idle;

And a determining unit, configured to determine a second time point of the transmittable signal when the determination result of the determining unit indicates that the channel is idle.
A device according to claim 11 or 12, wherein

The second determining module is configured to determine a second time point of the transmittable signal in the first subframe, and the second time point is not earlier than the third time point;

The third time point is the second candidate transmission time point in the first subframe, and the second candidate transmission time point is: before the time of the first candidate transmission time point, and is The last time point of the time in the candidate transmission time point for transmitting the second communication signal predefined in the first subframe.
A device according to claim 11 or 12, wherein

The second determining module is configured to determine a second time point of the transmittable signal in the second subframe, and the second time point is not earlier than the third time point, where the second subframe is The previous subframe of the first subframe;

The third time point is a second candidate transmission time point in the second subframe, and the second candidate transmission time point is a predefined second communication signal in the second subframe. The last time point of the moment in the candidate time point.
The device of claim 11 wherein:

The detecting module is specifically configured to determine a starting time point of performing idle channel detection for the first communication signal to be sent, and start performing an idle channel for the first communication signal to be sent at a determined starting time point Detecting; wherein the starting time point is in the first subframe, and the starting time point is not earlier than the third time point, and the third time point is the first time in the first subframe a second candidate transmission time point, the second candidate transmission time point being: before the time of the first candidate transmission time point, and being a candidate for transmitting the second communication signal predefined in the first subframe The last time point of the time in the transmission time point.
The device of claim 11 wherein:

The detecting module is specifically configured to determine a starting time point of performing idle channel detection for the first communication signal to be sent, and start performing an idle channel for the first communication signal to be sent at a determined starting time point Detection

The start time point is in the second subframe, and the start time point is not earlier than the third time point, and the second subframe is the previous subframe of the first subframe. The third time point is a second candidate transmission time point in the second subframe, and the second candidate transmission time point is a candidate for pre-defined second communication signal in the second subframe. The last point in time at the time.
A device according to any one of claims 11 to 16, wherein

The detecting module is further configured to perform idle channel detection for the second communication signal; wherein, a policy performed by the idle channel detection performed by the second communication signal is performed by performing idle channel detection for the first communication signal The strategy is different.
The device of claim 17 wherein:

The processing module is further configured to suspend the idle channel detection performed by the second communication signal during the sending of the first communication signal after performing the idle channel detection for the first communication signal. a back-off counter of the back-counter, the current count value of the back-off counter is an integer greater than 0; if the first communication signal is transmitted, returning to the back-off counter of the idle channel detection performed by the second communication signal Countback, and count back from the current count value.
The device of claim 17 wherein:

The processing module is further configured to send the second communication signal during a period in which the first communication signal is sent.
A communication server, comprising: a processor and a transceiver;

The transceiver device is connected to the processor, and configured to send a signal to be sent indicated by the processor;

The processor is configured to determine a first time point pre-configured in the first subframe, where the first time point is a first candidate sending time point for transmitting the first communication signal; before the first time point Performing idle channel detection for the first communication signal to be transmitted; determining a second time point of the transmittable signal according to the result of the idle channel detection; if the second time point is the first time point and the first time point When the time is the same, the first communication signal is sent from the first time point by the transceiver; or, if the second time point is before the time of the first time point, And transmitting, by the transceiver device, a channel occupation signal in a period from the start of the second time point to the end of the first time point, and transmitting the first communication signal by using the transceiver device from the first time point.