CN117480850A

CN117480850A - Communication method and device

Info

Publication number: CN117480850A
Application number: CN202180099041.9A
Authority: CN
Inventors: 赵楠德; 马东俊
Original assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Current assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Priority date: 2021-09-10
Filing date: 2021-09-10
Publication date: 2024-01-30
Also published as: WO2023035252A1

Abstract

The application provides a communication method and device, wherein the method comprises the following steps: channel detection is performed on each beam of a set of beams in a channel occupation time through listen before talk, LBT, comprising a first LBT and a second LBT, wherein at least one beam of the set of beams is channel detected through the first LBT. In this way, since the channel detection of the first LBT is performed on part of the beams in the beam set, it is unnecessary to perform a complete channel detection procedure of the second LBT on all the beams, so that the time domain resources of the LBT before transmission can be reduced, and the problem of blocking between different beams can be alleviated.

Description

Communication method and device

Technical Field

The present disclosure relates to the field of communications technologies, and in particular, to a communications method and apparatus.

Background

Listen-before-talk (Listen Before Talk, LBT) is a clear channel assessment (Clear Channel Access, CCA) mechanism for wireless channel access in unlicensed bands, used to facilitate spectrum sharing by devices in a wireless network, improve channel utilization, and reduce transmission collisions.

The existing unlicensed band wireless channel access scheme is designed based on omni-directional channel monitoring. However, in a beam-based communication scenario, the detected interference is listened to over an omni-directional channel, often inconsistent with the interference level experienced when transmitting based on beams. Therefore, based on the unlicensed frequency band of the multi-beam communication, a channel access scheme based on directional channel monitoring should be used to perform LBT of the multi-beam, so as to ensure that the interference detected in the channel monitoring process is consistent with the interference level experienced during the beam-based transmission.

However, when performing multi-beam LBT based on the unlicensed band of multi-beam communication, if a complete conventional LBT channel access procedure is performed once for each beam direction, the LBT procedure before transmission takes too long, and the blocking problem between different beams is more serious.

Content of the application

The embodiment of the application provides a communication method and a communication device, which are used for solving the problem that the LBT process before the transmission of the unlicensed frequency band of the multi-beam communication in the prior art takes too long.

A first aspect of the present application provides a communication method applied to a terminal device or a network device, the method including:

channel detection is carried out on each beam of a beam set in channel occupation time through Listen Before Talk (LBT), and the LBT comprises a first LBT and a second LBT;

wherein at least one beam in the set of beams performs channel detection through a first LBT.

In an alternative embodiment, the time domain resources occupied by the first LBT are smaller than the time domain resources occupied by the second LBT.

In an alternative embodiment, before said performing channel detection for listen before talk LBT for each beam of the set of beams in the channel occupation time, further comprises:

And determining the number of beams for channel detection through the first LBT according to a preset value.

In an alternative embodiment, the performing channel detection for listen before talk LBT for each beam of the set of beams in the channel occupancy time includes:

and carrying out channel detection on each beam in the beam set through the first LBT.

In an alternative embodiment, after said channel detection of each beam of said set of beams by said first LBT, said method further comprises:

and detecting that the channel is occupied when the beams in the beam set are subjected to channel detection through the first LBT, and carrying out channel detection on the beams with the occupied channels through the second LBT.

In an optional implementation manner, the first LBT is configured to perform detection of a first listening slot on a channel corresponding to the beam, until it is detected that the channel corresponding to the beam ends access of the channel corresponding to the beam when the first listening slot is idle.

In an optional implementation manner, the second LBT is configured to continuously perform detection of a second listening slot on a channel corresponding to the beam, until it is detected that the channel corresponding to the beam is idle in the second listening slot and the target counter is 0, and end access of the channel corresponding to the beam.

In an alternative embodiment, the initial value of the target counter is a random number between zero and the maximum value of the contention window.

In an alternative embodiment, the target counter is configured to decrement by one each time it is detected that the channel corresponding to the beam is idle in the third listening slot.

In an alternative embodiment, the channel detection of the LBT is performed according to the order of the beam index of each beam of the set of beams.

In an optional implementation manner, the second LBT is further configured to start the target timer each time it is detected that the channel corresponding to the beam is idle in the second listening slot, and perform detection of a third listening slot on the channel corresponding to the beam.

In an optional implementation manner, after the detecting the third listening slot for the channel corresponding to the beam, the method includes:

and if the channel corresponding to the beam is detected to be idle in a third monitoring time slot and the target counter is not zero, repeating the detection of the third monitoring time slot on the channel corresponding to the beam.

In an optional implementation manner, after the detecting the third listening slot for the channel corresponding to the beam, the method further includes:

And if the channel corresponding to the wave beam is detected to be occupied in the third monitoring, repeating the detection of the second monitoring time slot on the channel corresponding to the wave beam.

In an alternative embodiment, the channel detection of the LBT is performed by identifying a poll based on the execution status of each beam of the set of beams.

In an alternative embodiment, the execution state identifier includes a first identifier, a second identifier and a third identifier, where the first identifier is used to characterize that the channel detection of the LBT is not completed, the second identifier is used to characterize that the channel detection of the LBT is completed, and the third identifier is used to characterize that the channel corresponding to the beam is detected to be idle in the second listening slot.

In an optional implementation manner, if the beam performs channel detection of the first LBT and detects that a channel corresponding to the beam is idle in the first listening slot, the execution state identifier of the beam is changed from the first identifier to the second identifier.

In an optional implementation manner, if the beam performs channel detection of the second LBT and detects that the channel corresponding to the beam is idle in the second listening slot, the execution state identifier of the beam is changed from the first identifier to the third identifier.

In an alternative embodiment, if the execution state of the polled beam is marked as the third identifier, the target timer is started and a third listening slot is detected for the channel corresponding to the beam.

In an alternative embodiment, if it is detected that the channel corresponding to the beam is idle during the third listening and the target counter is not zero, the detection of the third listening slot is repeated for the channel corresponding to the beam.

In an optional implementation manner, if it is detected that the channel corresponding to the beam is idle during the third listening and the target counter is zero, the execution state identifier of the beam is changed from the third identifier to the second identifier.

In an optional implementation manner, if it is detected that the channel corresponding to the beam is occupied during the third monitoring, the execution state identifier of the beam is changed from the third identifier to the first identifier.

In an alternative embodiment, each beam in the set of beams performs data transmission after detecting that the channel is free, or performs data transmission after all beams in the set of beams detect that the channel is free.

In an alternative embodiment, the performing channel detection for listen before talk LBT for each beam of the set of beams in the channel occupation time further comprises:

and if the number of times that the channels corresponding to the wide beams are continuously detected to be occupied exceeds a first time threshold value when the beams are spatially dispersed or the LBT is executed on the wide beams covering the beams, executing the channel detection of the LBT on each beam of the beams.

and if the number of times that the channel corresponding to the first beam is continuously detected to be occupied exceeds a second threshold when the LBT is executed on the first beam in the beam set, discarding the LBT executed on the first beam in the beam set.

A second aspect of the present application provides a communication device, the method comprising:

a processing module, configured to perform channel detection on each beam of a beam set in a channel occupation time through listen before talk LBT, where the LBT includes a first LBT and a second LBT;

In an alternative embodiment, the processing module is further configured to determine, according to a preset value, a number of beams for channel detection by the first LBT.

In an alternative embodiment, the processing module is specifically configured to perform channel detection on each beam in the beam set through the first LBT.

In an alternative embodiment, the processing module is specifically configured to detect that a channel is occupied when a beam in the beam set is detected as being detected by the first LBT, and perform channel detection on a beam with a channel occupied by the second LBT.

In an optional implementation manner, the second LBT is further configured to start the target timer and perform detection of a third listening slot on the channel corresponding to the beam each time it is detected that the channel corresponding to the beam is idle in the second listening slot.

In an optional implementation manner, the processing module is specifically configured to repeat the detection of the third listening slot on the channel corresponding to the beam if it is detected that the channel corresponding to the beam is idle in the third listening slot and the target counter is not zero.

In an optional implementation manner, the processing module is specifically configured to repeat the detection of the second listening slot for the channel corresponding to the beam if it is detected that the channel corresponding to the beam is occupied during the third listening.

In an optional implementation manner, the processing module is specifically configured to change the execution state identifier of the beam from the first identifier to the second identifier if the beam performs channel detection of the first LBT and it is detected that a channel corresponding to the beam is idle in the first listening slot.

In an optional implementation manner, the processing module is specifically configured to change the execution state identifier of the beam from the first identifier to the third identifier if the beam performs channel detection of the second LBT and it is detected that the channel corresponding to the beam is idle in the second listening slot.

In an optional implementation manner, the processing module is specifically configured to, if the execution state of the polled beam is marked as the third identifier, start the target timer and perform detection of a third listening slot on a channel corresponding to the beam.

In an optional implementation manner, the processing module is specifically configured to repeat the detection of the third listening slot for the channel corresponding to the beam if it is detected that the channel corresponding to the beam is idle during the third listening and the target counter is not zero.

In an optional implementation manner, the processing module is specifically configured to change, if it is detected that a channel corresponding to the beam is idle during the third monitoring and the target counter is zero, the execution state identifier of the beam from the third identifier to the second identifier.

In an optional implementation manner, the processing module is specifically configured to change the execution state identifier of the beam from the third identifier to the first identifier if it is detected that the channel corresponding to the beam is occupied during the third monitoring.

In an alternative embodiment, the processing module is further configured to perform channel detection of the LBT for each beam of the beam set if the number of times that the channel corresponding to the wide beam is continuously detected to be occupied exceeds a first threshold when the beam set is spatially dispersed or the LBT is performed for the wide beam covering the beam set.

In an optional implementation manner, the processing module is further configured to discard performing the LBT on a first beam in the beam set if the number of times that the channel corresponding to the first beam is continuously detected to be occupied exceeds a second threshold for times when performing the LBT on the first beam in the beam set.

A fifth aspect of the present application provides an electronic device, comprising:

a processor, a memory, a transmitter, and an interface for communicating with a terminal device;

the memory stores computer-executable instructions;

the processor executes computer-executable instructions stored by the memory to cause the processor to perform the communication method as described in the first aspect.

A fourth aspect of the present application provides a chip comprising: a processor for calling and running a computer program from a memory, causing a device on which the chip is mounted to perform the method according to the first aspect.

A fifth aspect of the present application provides a computer readable storage medium storing a computer program for causing a computer to perform the method according to the first aspect.

A sixth aspect of the present application provides a computer program product comprising computer instructions which, when executed by a processor, implement the method according to the first aspect.

A seventh aspect of the present application provides a computer program for causing a computer to perform the method as described in the first aspect.

An eighth aspect of the present application provides an apparatus, the apparatus may comprise: at least one processor and interface circuitry, the program instructions involved being executed in the at least one processor to cause the communication device to carry out the method as described in the first aspect.

A ninth aspect of the present application provides a communications apparatus for performing the method of the first aspect.

According to the communication method and device provided by the embodiment of the application, the terminal equipment or the network equipment detects the channel of each beam of the beam set in the channel occupation time through Listen Before Talk (LBT), the LBT comprises a first LBT and a second LBT, and at least one beam in the beam set detects the channel through the first LBT. In this way, since the channel detection of the first LBT is performed on part of the beams in the beam set, it is unnecessary to perform a complete channel detection procedure of the second LBT on all the beams, so that the time domain resources of the LBT before transmission can be reduced, and the problem of blocking between different beams can be alleviated.

Drawings

In order to more clearly illustrate the invention or the technical solutions of the prior art, the following description of the embodiments or the drawings used in the description of the prior art will be given in brief, it being obvious that the drawings in the description below are some embodiments of the invention and that other drawings can be obtained from them without inventive effort for a person skilled in the art.

Fig. 1 is a schematic view of a communication method according to an embodiment of the present application;

fig. 2 is a schematic flow chart of a communication method according to an embodiment of the present application;

fig. 3 is a schematic diagram of an additional detection interference of a wide beam according to an embodiment of the present application;

fig. 4 is a schematic diagram of a beam interference gap according to an embodiment of the present application;

fig. 5a is a schematic diagram of a multi-beam LBT in beam space division multiplexing according to an embodiment of the present application;

fig. 5b is a schematic diagram of a multi-beam LBT during beam time division multiplexing according to an embodiment of the present application;

fig. 6a is a schematic diagram of another multi-beam LBT in beam space division multiplexing according to an embodiment of the present application;

fig. 6b is a schematic diagram of another multi-beam LBT in beam time division multiplexing according to an embodiment of the present application;

Fig. 7 is a flow chart of another communication method according to an embodiment of the present application;

fig. 8 is a flow chart of still another communication method according to an embodiment of the present application;

fig. 9a is a schematic diagram of a multi-beam LBT at the time of space division multiplexing of another beam according to an embodiment of the present application;

fig. 9b is a schematic diagram of a multi-beam LBT at the time of further beam time division multiplexing according to an embodiment of the present application;

fig. 10 is a flow chart of another communication method according to an embodiment of the present application;

fig. 11a is a schematic diagram of a multi-beam LBT at the time of beam space division multiplexing according to another embodiment of the present application;

fig. 11b is a schematic diagram of a multi-beam LBT at the time of beam time division multiplexing according to another embodiment of the present application;

fig. 12 is a flow chart of another communication method according to an embodiment of the present application;

fig. 13a is a schematic diagram of a multi-beam LBT at the time of space division multiplexing of another beam according to an embodiment of the present application;

fig. 13b is a schematic diagram of a multi-beam LBT at the time of beam time division multiplexing according to another embodiment of the present application;

fig. 14 is a schematic structural diagram of a communication device according to an embodiment of the present application;

fig. 15 is a schematic structural diagram of an electronic device according to an embodiment of the present application.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the present invention more apparent, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

The terms first, second and the like in the description of embodiments of the present application, in the claims and in the above-described figures, are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that embodiments of the present application described herein may be capable of operation in sequences other than those illustrated or described herein, for example. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

It should be understood that the terms "system" and "network" are used interchangeably herein. The term "and/or" is herein merely an association relationship describing an associated object, meaning that there may be three relationships, e.g., a and/or B, may represent: a exists alone, A and B exist together, and B exists alone. In addition, the character "/" herein generally indicates that the front and rear associated objects are an "or" relationship.

The following description of the technical solutions in the embodiments of the present application will be made with reference to the drawings in the embodiments of the present application, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the present disclosure, are within the scope of the present disclosure.

The LBT mechanism is first described below.

For the unlicensed band at 60GHz, the LBT mechanism comprises the following steps S11-S17:

s11: prior to data transmission on one or a group of working channels, the device initiating the transmission performs a clear channel assessment (Clear Channel Access, CCA) check on the working channels.

S12: if the working channel is found to be occupied, the device initiating the transmission cannot perform data transmission on the working channel, and other devices cannot perform data transmission on the working channel. If the CCA check determines that the working channel is no longer occupied and the transmission is delayed by the number of empty slots defined by the CCA check procedure, the transmission of the working channel may be resumed or other devices may be enabled for data transmission on the working channel.

S13: the device initiating the transmission should perform a CCA check using "energy detection".

If the energy level on the working channel exceeds the threshold corresponding to the power level given in S17 below, the working channel is considered to occupy a slot time of 5 mus. Accordingly, the device initiating the transmission should observe the operating channel during the CCA observation time measured by the plurality of slot times.

S14: the CCA check initiates at the end of the operating channel occupancy time slot, and a transmission delay occurs if at least 8 mus of the operating channel is observed to be unoccupied in the CCA check. The transmission delay should last at least the listening slot of the random number (0 to maximum). Wherein the maximum value of the random number must not be less than 3.

S15: the total time that the device initiating the transmission uses the working channel is defined as the channel occupancy time.

The channel occupation time should be less than 5ms, and subsequently a new CCA check may be performed according to the above-described steps S11-S13.

S16: a device that initiates or does not initiate a transmission may skip the CCA check after correctly receiving a data packet addressed to it and immediately transmit in response to the received frame. If no new CCA check is performed, the continuous transmission sequence of the device must not exceed the 5ms channel occupation time specified in S15.

S17: the energy detection threshold S for the CCA check may be determined by equation (1).

S＝-80dBm+10×log_10(X)+10×log_10(P_max/P_out) (1)

Wherein X is the bandwidth of the working channel, the unit is MHz, and P _out Equivalent omni-directional radiated power (Equivalent Isotopically Radiated Power, EIRP), P for Radio Frequency (RF) output _max Is the power maximum of the radio frequency output.

The channel access scheme is described below.

The network device transmitting on the channel should perform the following four types of channel access procedures to access the channel on which the transmission is performed.

In the first type of channelIn the access flow, the network device is configured to determine that the time length is T _d The first time a channel idle is detected and the counter N is 0, a transmission can be sent. The counter N may be adjusted by detecting the channel through an additional listening slot, and the specific process is as shown in steps S21-S26:

s21: setting a counter n=n _init 。

After step S21, step S24 is performed.

Wherein N is _init Is 0 to CW _p Random numbers uniformly distributed among the two.

S22: if N >0, the counter is decremented by 1, i.e., n=n-1.

S23: the time length of the channel is T _sl Is used for detecting the monitoring time slot.

If the monitoring time slot is idle, executing S24; otherwise, S25 is performed.

Wherein T is _sl Indicating LBT listening slots of length 9 mus.

S24: and judging whether N is 0.

If yes, ending the channel access process. If not, S22 is executed.

S25: the time length of the channel is T _d Is used for detecting the monitoring time slot.

The result of the detection of the listening time slots may be that at least one listening time slot is occupied, or that all listening time slots are idle. T (T) _d ＝T _f +m _p *T _sl μs。

S26: judging whether the channel monitoring result is T _d And all monitoring time slots are idle in time.

If yes, executing S24; if not, S25 is executed.

Wherein T is _d From T _f =16μs immediately following m _p The LBT listens for time slot T _sl Is composed of T _f Containing 1 LBT listening slot T at the starting time position _sl 。CW _p Bid for channel access priority pContention window size.

In the second type of channel access procedure, at least 1 listening time T _{short dl} After detecting that the channel is idle, the network device may send downlink transmission. T (T) _{short dl} From T _f =16μs immediately followed by 1 LBT listening slot, and T _f At the start time position 1 LBT listening slot is contained. If T _{short dl} If all listening slots within the channel are idle, then the channel listening result is considered idle.

In the third type of channel access procedure, the listening time T _f After detecting that the channel is idle, the network device may send downlink transmission. Wherein the gap size between the start position of the transfer and the end position of the last transfer is 16 mus. T (T) _f The channel listening result is considered to be idle if at least 5 mus in the listening slot total detects that the channel is idle, including 1 LBT listening slot in its last 9 mus.

In the fourth type of channel access procedure, the network device directly transmits without channel detection after the gap is over. Wherein the gap size between the start position of the transfer and the end position of the last transfer is less than or equal to 16 mus, and the length of the transfer is not more than 584 mus.

In order to solve the above technical problems, embodiments of the present application provide a communication method and apparatus, which execute short LBT for a part of beams in a beam set, so that a complete channel detection procedure of conventional LBT may not be executed for all beams, and thus time domain resources of LBT before transmission may be reduced, and a problem of blocking between different beams may be alleviated.

It should be noted that, the technical solution of the embodiment of the present application may be applied to an NTN communication system, but the embodiment of the present application is not limited thereto. It can also be applied to global mobile communication (Global System of Mobile communication, GSM) system, code division multiple access (Code Division Multiple Access, CDMA) system, wideband code division multiple access (Wideband Code Division Multiple Access, WCDMA) system, general packet Radio service (General Packet Radio Service, GPRS), long term evolution (Long Term Evolution, LTE) system, LTE frequency division duplex (Frequency Division Duplex, FDD) system, LTE time division duplex (Time Division Duplex, TDD) system, long term evolution advanced (Advanced long term evolution, LTE-a) system, new Radio (NR) system, evolution system of NR system, LTE (LTE-based access to unlicensed spectrum, LTE-U) system on unlicensed band, NR (NR-based access to unlicensed spectrum, NR-U) system on unlicensed band, universal mobile communication system (Universal Mobile Telecommunication System, UMTS), worldwide interoperability for microwave access (Worldwide Interoperability for Microwave Access, wiMAX) communication system, wireless local area network (Wireless Local Area Networks, WLAN), wireless fidelity (Wireless Fidelity, wiFi), next generation communication system or other communication system, etc.

The application scenario of the present application is illustrated below.

Fig. 1 is a schematic view of a communication method according to an embodiment of the present application. As shown in fig. 1, an interaction is performed between a terminal device 101 and a network device 102. For unlicensed bands, channel detection of LBT may be performed for each beam of the set of beams in the channel occupation time before data transmission between the terminal device 101 and the network device 102. The LBT may include a first LBT and a second LBT, where the beam set includes at least one beam for performing the first LBT.

Wherein the first LBT may be a short LBT and the second LBT may be a conventional LBT. The time domain resources occupied by the first LBT are smaller than the time domain resources occupied by the second LBT.

Wherein the terminal device 101 includes, but is not limited to, a satellite or cellular telephone, a personal communication system (Personal Communications System, PCS) terminal that may combine a cellular radiotelephone with data processing, facsimile and data communications capabilities; a PDA that can include a radiotelephone, pager, internet/intranet access, web browser, organizer, calendar, and/or a global positioning system (Global Positioning System, GPS) receiver; and conventional laptop and/or palmtop receivers or other electronic devices that include a radiotelephone transceiver. A terminal device may refer to an access terminal, user Equipment (UE), subscriber unit, subscriber station, mobile station, remote terminal, mobile device, user terminal, wireless communication device, user agent, or User Equipment. An access terminal may be a cellular telephone, a cordless telephone, a session initiation protocol (Session Initiation Protocol, SIP) phone, a wireless local loop (Wireless Local Loop, WLL) station, a personal digital assistant (Personal Digital Assistant, PDA), a handheld device with wireless communication capabilities, a computing device or other processing device connected to a wireless modem, an in-vehicle device, a wearable device, a terminal device in a 5G network or a terminal device in a future evolved PLMN, etc.

Network device 102 may provide communication coverage for a particular geographic area and may communicate with terminal devices located within the coverage area. Alternatively, the network device 102 may be a base station (Base Transceiver Station, BTS) in a GSM system or a CDMA system, a base station (NodeB, NB) in a WCDMA system, an evolved base station (Evolutional Node B, eNB or eNodeB) in an LTE system, or a radio controller in a cloud radio access network (Cloud Radio Access Network, CRAN), or the network device may be a mobile switching center, a relay station, an access point, a vehicle device, a wearable device, a hub, a switch, a bridge, a router, a network device in a 5G network, or a network device in a future evolved public land mobile network (Public Land Mobile Network, PLMN), etc.

The technical solutions of the embodiments of the present application are described in detail below with specific embodiments by taking a terminal device or a network device as an example. The following embodiments may be combined with each other, and some embodiments may not be repeated for the same or similar concepts or processes.

Fig. 2 is a flow chart of a communication method according to an embodiment of the present application. The execution body of the embodiment of the application is a terminal device or a network device, and relates to a process of how to execute channel detection of LBT. As shown in fig. 2, the method includes:

S201, performing channel detection on each beam of the beam set in the channel occupation time through listen before talk LBT. The LBT comprises a first LBT and a second LBT, and at least one beam in the beam set is detected through the first LBT.

It should be appreciated that embodiments of the present application are not limited in the number of beams and the type of beams in the beam set, and in some embodiments P beams may be used within the COT to form the beam set { beam ] ₁ ,…,beam _P The P beams may be space division multiplexed (Spatial Division Multiplexing, SDM) or time division multiplexed (Time Division Multiplexing, TDM) within the COT, which is not limited by the embodiments of the present application.

It should be understood that the embodiments of the present application are not limited to the first LBT and the second LBT. In some embodiments, the time domain resources occupied by the first LBT are smaller than the time domain resources occupied by the second LBT.

The first LBT may be a short LBT (Cat-2 LBT) exemplified by _f =8μs immediately followed by m LBT listening slots T _sl Formed by =5μs, i.e. the first LBT channel detection time is T _cat2 ＝T _f +m*T _sl Wherein m=0, 1 corresponds to the first LBT channel detection time T respectively _short 8 and 13 mus.

The second LBT may be a conventional LBT (Cat-4 LBT), exemplified by T _d Immediately following N LBT listening slots T _sl Formed by =5μs, i.e. the second LBT channel detection time is T _cat4 ＝T _d +N*T _sl Wherein T is _d ＝T _f +n*T _sl N=0, 1, respectively corresponding to the channel detection time T _d For 8 and 13 mus, N is a random back-off number generated based on the contention window size.

It should be appreciated that embodiments of the present application are not limited as to how the first LBT is performed in the beam set. The following two ways are provided to perform the first LBT in the beam set.

In the first manner, the number of beams for channel detection by the first LBT may be determined according to a preset value. Exemplary, one can select from the beam set { beam } ₁ ,…,beam _P Q beams are selected to perform a first LBT, where 0.ltoreq.Q.ltoreq.P, and the remaining P-Q beams perform a second LBT.

In a second approach, channel detection is performed for each beam in the set of beams by the first LBT. And detecting that the channel is occupied when the beams in the beam set are subjected to channel detection through the first LBT, and carrying out channel detection on the beams with the occupied channels through the second LBT. Exemplary, for the beam set { beam } ₁ ,…,beam _P All beams in } default to short LBT if beam _p And if the channel is detected to be occupied in the monitoring time slot, entering a second LBT flow.

The detailed execution flow of the first LBT and the second LBT is described below.

In the present application, the first LBT is configured to perform detection of a first listening slot on a channel corresponding to a beam, until it is detected that the channel corresponding to the beam ends a process of accessing the channel corresponding to the beam when the first listening slot is idle.

For example, in the process of the first LBT, the first listening slot may be detected for the channel, where the detection result of the first listening slot may be that at least one listening slot is occupied, or may be that all listening slots are idle. If the channel detection result is that the channel corresponding to the wave beam is occupied in the first monitoring time slot, the channel is continuously detected in the first monitoring time slot. If the channel detection result is that the channel corresponding to the wave beam is idle in the first monitoring time slot, ending the access of the channel corresponding to the wave beam.

Wherein the first listening slot may be of a time length T _cat2 Is allocated to the listening slot of the mobile station.

In the present application, the second LBT is configured to continuously perform detection of the second listening slot on the channel corresponding to the beam, until it is detected that the channel corresponding to the beam is idle in the second listening slot and the target counter is 0, and end access of the channel corresponding to the beam. Wherein the initial value of the target counter is a random number between zero and the maximum value of the contention window. The target counter is used for subtracting one when the channel corresponding to the detected beam is idle in the third monitoring time slot.

Wherein the second listening slot may be of a time length T _d Is allocated to the listening slot of the mobile station. The third listening slot may be of a time length T _sl Is allocated to the listening slot of the mobile station.

It should be understood that the channel detection performed by the embodiment of the present application for each beam may also be performed in a different order.

In some embodiments, channel detection of LBT may be performed according to the order of the beam index of each beam of the set of beams.

Correspondingly, the second LBT is further configured to start the target timer and perform detection of the third listening slot on the channel corresponding to the beam when it is detected that the channel corresponding to the beam is idle in the second listening slot each time. If the channel corresponding to the beam is detected to be idle in the third monitoring time slot and the target counter is not zero, the detection of the third monitoring time slot is repeated on the channel corresponding to the beam. If the channel corresponding to the beam is detected to be occupied in the third monitoring, the detection of the second monitoring time slot is repeatedly carried out on the channel corresponding to the beam.

In other embodiments, channel detection of LBT may be performed by identifying a poll based on the execution status of each beam of the set of beams.

The execution state identifier comprises a first identifier, a second identifier and a third identifier, wherein the first identifier is used for representing channel detection of incomplete LBT, the second identifier is used for representing channel detection of completed LBT, and the third identifier is used for representing that a channel corresponding to a detected beam is idle in a second monitoring time slot.

Correspondingly, if the beam executes the channel detection of the first LBT and detects that the channel corresponding to the beam is idle in the first monitoring time slot, the execution state identification of the beam is changed from the first identification to the second identification. If the beam executes the channel detection of the second LBT and the channel corresponding to the beam is detected to be idle in the second monitoring time slot, the executing state identification of the beam is changed from the first identification to the third identification. If the execution state of the polled beam is marked as a third mark, starting a target timer and detecting a third monitoring time slot for a channel corresponding to the beam. If the channel corresponding to the beam is detected to be idle in the third monitoring and the target counter is not zero, the detection of the third monitoring time slot is repeatedly carried out on the channel corresponding to the beam. And if the channel corresponding to the beam is detected to be idle in the third monitoring and the target counter is zero, changing the execution state identification of the beam from the third identification to the second identification. And if the channel corresponding to the beam is detected to be occupied in the third monitoring, changing the execution state identification of the beam from the third identification to the first identification.

In the present application, a back-off mechanism may also be set in the multi-beam LBT scheme.

In the embodiment of the application, the fallback mechanism can be set in different LBT schemes. In some embodiments, if the beam sets are spatially dispersed, channel detection of LBT is performed for each beam of the beam set. Accordingly, if the beam set is spatially continuous, one LBT channel detection is performed based on one wide beam that can cover the beam set.

It should be noted that, based on the detection of the listening slot of one wide beam, channel listening on all narrow beams is completed at the same time, so that the time domain resources occupied by LBT can be effectively reduced. However, when the different narrow beams are spatially more dispersed, interference between the narrow beams will be additionally detected, resulting in a higher level of interference being detected based on the wide beam than the narrow beams actually experience. Fig. 3 is a schematic diagram of an additional detection of interference by a wide beam according to an embodiment of the present application, as shown in fig. 3, interference between beams beam1 and beam2 is additionally detected by a wide beam. Therefore, by spatially determining, a more appropriate LBT detection scheme can be selected.

In other embodiments, the channel detection of the LBT may be performed once based on one wide beam capable of covering the beam set, and if the number of times that the channel corresponding to the wide beam is continuously detected to be occupied exceeds the first threshold K when the LBT is performed on the wide beam covering the beam set, the channel detection is performed on each beam of the beam set. In this way, the time domain resources occupied by LBT may be reduced.

It should be understood that the embodiment of the present application is not limited to the first time threshold, and may be 3 times, 5 times, and so on, as an example.

In the embodiment of the present application, a rollback mechanism may also be set during the execution of LBT.

It should be appreciated that in a multi-beam communication scenario, the interference gap experienced by the different beams is large. Fig. 4 is a schematic diagram of a beam interference gap according to an embodiment of the present application. As shown in fig. 4, beam1 has less beam interference and beam2 has more beam interference.

Thus, in some embodiments, LBT is aborted for a first beam in the set of beams if the number of times that the channel corresponding to the first beam is continuously detected as being occupied exceeds a second threshold number of times when LBT is performed for the first beam. In this way, the LBT procedure of the beam experiencing higher interference in the direction can be abandoned, thereby reducing the impact on the efficiency of the multi-beam LBT scheme when the single beam direction interference level is higher.

It should be understood that the second time threshold is not limited in this embodiment, and may be, for example, 3 times, 5 times, etc.

S202, adopting channels corresponding to beams of a beam set to perform data transmission.

In this step, during or after performing channel detection of LBT for each beam of the beam set in the channel occupation time, data transmission may be performed using a channel corresponding to the beam of the beam set.

In some embodiments, each beam in the set of beams may transmit data after detecting that the channel is free. In other embodiments, data transmission may occur after all beams in the set of beams detect that a channel is free.

Fig. 5a is a schematic diagram of a multi-beam LBT at beam space division multiplexing according to an embodiment of the present application, fig. 5b is a schematic diagram of a multi-beam LBT at beam space division multiplexing according to an embodiment of the present application, fig. 6a is a schematic diagram of a multi-beam LBT at beam space division multiplexing according to another embodiment of the present application, and fig. 6b is a schematic diagram of a multi-beam LBT at beam time division multiplexing according to another embodiment of the present application. As can be seen from comparing fig. 5a with fig. 6a, and comparing fig. 5b with fig. 6b, in fig. 5a and fig. 5b, data transmission is performed when beam1, beam2, and beam p are idle. In fig. 6a and 6b, data transmission is performed immediately whenever there is a free channel in beam1, beam2, and beam p.

According to the communication method provided by the embodiment of the application, the terminal equipment or the network equipment detects the channel through Listen Before Talk (LBT) on each beam of the beam set in the channel occupation time, the LBT comprises a first LBT and a second LBT, and at least one beam in the beam set detects the channel through the first LBT. In this way, since the channel detection of the first LBT is performed on part of the beams in the beam set, it is unnecessary to perform a complete channel detection procedure of the second LBT on all the beams, so that the time domain resources of the LBT before transmission can be reduced, and the problem of blocking between different beams can be alleviated.

On the basis of the above-described embodiments, two ways of performing channel detection of LBT for each beam of the beam set in the channel occupation time are provided below. In the first manner, the number Q of beams for performing the short LBT may be preset. Fig. 7 is a schematic flow chart of another communication method according to an embodiment of the present application. The execution body of the embodiment of the present application is a terminal device or a network device, as shown in fig. 7, fig. 5a, and fig. 5b, where the method includes:

s301, selecting Q beams from the beam set to execute short LBT, and executing normal LBT by the remaining P-Q beams.

Wherein the beam set may be { beam } ₁ ,…,beam _P And P is the number of beams in the beam set, and Q is more than or equal to 0 and less than or equal to P.

S302, setting a beam index p=0 to traverse the beam set.

S303, updating the beam index by adding 1 to the beam index.

S304, determining whether the beam index P is larger than the number of beams P in the beam set.

If yes, step S314 is executed, and if no, step S305 is executed.

S305, determining whether the beam corresponding to the beam index performs short LBT.

If yes, go to step S306, if no, go to step S308.

S306, doing time length for the channel is T _cat2 Is used for detecting the monitoring time slot.

The result of the detection of the listening time slots may be that at least one listening time slot is occupied, or that all listening time slots are idle.

S307, determining whether the channel monitoring result is T _cat2 And all monitoring time slots are idle in time.

If yes, step S303 is executed, and if no, step S306 is executed.

S308, if the time length is T _d If the listening slot of (1) detects that the channel is idle for the first time, a counter n=n is set _init 。

Wherein N is _init Is a random number uniformly distributed between 0 and the maximum value of the contention window.

S309, determining whether N is 0.

If yes, step S303 is executed, and if no, step S310 is executed.

S310, the counter is decremented by 1, i.e. n=n-1.

S311, doing time length for the channel is T _sl And determining whether the listening slot is idle.

If yes, step S309 is executed, and if no, step S312 is executed.

S312, doing time length for the channel is T _d Is used for detecting the monitoring time slot.

S313, determining whether the channel monitor result is T _d And all monitoring time slots are idle in time.

If yes, step S309 is executed, and if no, step S312 is executed.

S314, ending the channel access process.

In this embodiment of the present application, each beam in the beam set may perform data transmission after detecting that the channel is idle, or may perform data transmission after all beams in the beam set detect that the channel is idle.

In a second approach, a short LBT is performed for each beam in the set of beams, and if each beam in the set of beams detects that a channel is occupied when performing a short LBT, a normal LBT is performed for the beam for which the channel is occupied. Fig. 8 is a schematic flow chart of still another communication method according to an embodiment of the present application. Fig. 9a is a schematic diagram of a multi-beam LBT at the time of space division multiplexing of another beam provided in an embodiment of the present application, and fig. 9b is a schematic diagram of a multi-beam LBT at the time of space division multiplexing of another beam provided in an embodiment of the present application. The execution body of the embodiment of the application is a terminal device or a network device, as shown in fig. 8, 9a, and 9b, and the method includes:

s401, setting a beam index.

Wherein the beam index p can be set to p=0 to traverse the beam set { beam } ₁ ,…,beam _P }。

S402, adding 1 to the beam index.

S403, determining whether the beam index is larger than P.

If yes, step S413 is executed, and if no, step S404 is executed.

S404, for beam _p For a channel of time length T _cat2 Is used for detecting the monitoring time slot.

Wherein, the time length of the channel is T _cat2 The result of the detection of the listening slots may be that at least one listening slot is occupied or that all listening slots are idle.

S405, determining that the channel monitoring result is T _cat2 And whether all monitoring time slots are idle in time.

If yes, step S402 is executed, and if no, step S406 is executed.

S406, at time length T _d Is used for detecting channels in the listening time slots.

S407, if the time length is T _d If the listening slot of (1) detects that the channel is idle for the first time, a counter n=n is set _init 。

S408, determining whether N is 0.

If yes, step S402 is executed, and if no, step S409 is executed.

S409, the counter is decremented by 1, i.e. n=n-1.

S410, doing time length for the channel is T _sl And determining whether the listening slot is idle.

If yes, step S408 is executed, and if no, step S411 is executed.

S411, doing time length for the channel is T _d Is used for detecting the monitoring time slot.

S412, determining whether the channel monitor result is T _d All listening during a timeThe time slots are idle.

If yes, step S408 is executed, and if no, step S411 is executed.

S413, ending the channel access process.

Based on the above embodiments, the embodiments of the present application may further identify a manner of polling to perform channel detection of LBT according to an execution state of each beam of the beam set. Exemplary, beam _p =0 means beam _p Incomplete LBT procedure, beam _p =1 means beam _p The LBT procedure has been completed. Beam (beam) _p =2 means beam _p The completed time length is T _d Is used for detecting the monitoring time slot.

Fig. 10 is a schematic flow chart of another communication method according to an embodiment of the present application. Fig. 11a is a schematic diagram of a multi-beam LBT at the time of beam space division multiplexing according to another embodiment of the present application, and fig. 11b is a schematic diagram of a multi-beam LBT at the time of beam space division multiplexing according to another embodiment of the present application. The execution body of the embodiment of the present application is a terminal device or a network device, as shown in fig. 10, 11a, 11b, where the method includes:

S501, the LBT status flag of all beams in the beam set is set to 0.

S502, Q beams are selected from the beam set to execute short LBT, and the remaining P-Q beams execute normal LBT.

S503, setting a beam index p=0 to traverse the beam set.

S504, the beam index is continuously increased by 1 until beam _p =0 or 2, or no beam is present in the beam set _p =0 or 2.

If the beam index P is greater than the number of beams P in the beam set, p=0 is set.

S505, determining whether beam exists in the beam set _p =0 or 2.

If yes, step S506 is executed, and if no, step S520 is executed.

S506, determining whether the beam corresponding to the beam index performs short LBT.

If yes, step S507 is executed, and if no, step S510 is executed.

S507, doing time length for the channel is T _cat2 Is used for detecting the monitoring time slot.

S508, determining whether the channel monitor result is T _cat2 And all monitoring time slots are idle in time.

If yes, step S509 is executed, and if no, step S504 is executed.

S509, adjusting beam _p =1 means beam _p The LBT procedure is completed.

Step S504 is performed after step S509.

S510, determining beam _p Whether or not it is 0.

If yes, step S511 is executed, and if no, step S514 is executed.

S511, at time length T _d Is used for detecting channels in the listening time slots.

S512, determining that the channel monitoring result is T _d And all monitoring time slots are idle in time.

If yes, step S513 is executed, and if no, step S504 is executed.

S513, adjusting the beam _p =2 means beam _p The completion time length is T _d Is used for detecting the monitoring time slot.

Step S504 is performed after step S513.

S514, do time length for channel is T _sl Is used for detecting the monitoring time slot.

S515, determining the time length as T _sl Is idle.

If yes, step S516 is executed, and if no, step S519 is executed.

S516, determining whether the counter N is 0.

If yes, step S517 is executed, and if no, step S518 is executed.

S517, adjusting beam _p =1 means beam _p The LBT procedure is completed.

S518, the counter is decremented by 1, i.e. n=n-1.

S519, adjusting beam _p =0 means beam _p The LBT procedure is not completed.

Step S504 is performed after steps S517, S518, S519.

S520, ending the channel access process.

Fig. 12 is a schematic flow chart of still another communication method according to an embodiment of the present application. Fig. 13a is a schematic diagram of a multi-beam LBT at the time of beam space division multiplexing according to another embodiment of the present application, and fig. 13b is a schematic diagram of a multi-beam LBT at the time of beam space division multiplexing according to another embodiment of the present application. The execution body of the embodiment of the present application is a terminal device or a network device, as shown in fig. 12, 13a, and 13b, where the method includes:

S601, LBT state identification of all beams in the beam set is set to 0.

S602, setting a beam index p=0 to traverse the beam set.

S603, the beam index is continuously increased by 1 until beam _p =0 or 2, or no beam is present in the beam set _p =0 or 2.

S604, determining whether beam exists in the beam set _p =0 or 2.

If yes, go to step S605, if no, go to step S618.

S605, determining beam _p Whether or not it is 0.

If yes, step S606 is executed, and if no, step S612 is executed.

S606, doing time length for the channel is T _cat2 Is used for detecting the monitoring time slot.

S607, determining whether the channel monitor result is T _cat2 And all monitoring time slots are idle in time.

If yes, step S608 is executed, and if no, step S609 is executed.

S608, adjusting beam _p =1 means beam _p The LBT procedure is completed.

Step S603 is performed after step S608.

S609, at time length T _d Is used for detecting channels in the listening time slots.

S610, determining that the channel monitoring result is T _d And all monitoring time slots are idle in time.

If yes, step S611 is executed, and if no, step S603 is executed.

S611, adjusting beam _p =2 means beam _p The completion time length is T _d Is used for detecting the monitoring time slot.

Step S603 is performed after step S611.

S612, doing time length T for the channel _sl Is used for detecting the monitoring time slot.

S613, determining the time length as T _sl Is idle.

If yes, go to step S614, if no, go to step S617.

S614, it is determined whether the counter N is 0.

If yes, step S615 is executed, and if no, step S616 is executed.

S615, adjusting beam _p =1 means beam _p The LBT procedure is completed.

S616, the counter is decremented by 1, i.e. n=n-1.

S617, adjusting beam _p =0 means beam _p The LBT procedure is not completed.

Step S603 is performed after steps S615, S616, S617.

S618, ending the channel access process.

According to the communication method provided by the embodiment of the application, the first LBT is introduced into the multi-beam LBT flow before COT, so that the situation that some beams with lower interference execute excessive channel monitoring time slots can be avoided. Therefore, the beams in the beam set can execute the first LBT or the second LBT according to the conditions, and the LBT process efficiency in the multi-beam communication scene is improved. In addition, by introducing different back-off mechanisms of the LBT schemes, the influence of certain beams with higher interference on the LBT flow can be reduced, and the efficiency of the multi-beam LBT flow is improved.

Those of ordinary skill in the art will appreciate that: all or part of the steps for implementing the above method embodiments may be implemented by hardware related to program information, and the above program may be stored in a computer readable storage medium, where the program, when executed, performs steps including the above method embodiments; and the aforementioned storage medium includes: various media that can store program code, such as ROM, RAM, magnetic or optical disks.

Fig. 14 is a schematic structural diagram of a communication device according to an embodiment of the present application. The communication device may be implemented by software, hardware or a combination of both to perform the communication method in the above embodiment. As shown in fig. 14, the communication apparatus 700 includes: a memory module 701 and a processing module 702.

The storage module 701 is configured to store an executable program.

A processing module 702 is configured to perform channel detection on each beam of the set of beams in the channel occupation time by listen before talk LBT, where the LBT includes a first LBT and a second LBT.

Wherein at least one beam of the set of beams is channel detected by the first LBT.

In an alternative embodiment, the processing module is further configured to determine the number of beams for channel detection by the first LBT according to a preset value.

In an alternative embodiment, the processing module 702 is specifically configured to detect that a channel is occupied when a beam in the beam set is detected as being channel-detected by a first LBT, and channel-detect the beam occupied by the channel by a second LBT.

In an alternative embodiment, the first LBT is configured to perform detection of a first listening slot on a channel corresponding to the beam, until it is detected that the channel corresponding to the beam ends access to the channel corresponding to the beam when the first listening slot is idle.

In an alternative embodiment, the second LBT is configured to continuously perform detection of the second listening slot on the channel corresponding to the beam, until it is detected that the channel corresponding to the beam is idle in the second listening slot and the target counter is 0, and end access of the channel corresponding to the beam.

In an alternative embodiment, the second LBT is further configured to start the target timer and perform detection of the third listening slot for the channel corresponding to the beam each time it is detected that the channel corresponding to the beam is idle in the second listening slot.

In an alternative embodiment, the processing module 702 is specifically configured to repeat the detection of the third listening slot for the channel corresponding to the beam if it is detected that the channel corresponding to the beam is idle in the third listening slot and the target counter is not zero.

In an alternative embodiment, the processing module 702 is specifically configured to repeat the detection of the second listening slot for the channel corresponding to the beam if it is detected that the channel corresponding to the beam is occupied during the third listening.

In an alternative embodiment, the channel detection of the LBT is performed by identifying the poll based on the execution status of each beam of the set of beams.

In an alternative embodiment, the execution state identifier includes a first identifier, a second identifier and a third identifier, where the first identifier is used to characterize that the channel detection of the LBT is not completed, the second identifier is used to characterize that the channel detection of the LBT is completed, and the third identifier is used to characterize that the channel corresponding to the detected beam is idle in the second listening slot.

In an optional implementation manner, the processing module 702 is specifically configured to change the execution status identifier of the beam from the first identifier to the second identifier if the beam performs channel detection of the first LBT and it is detected that the channel corresponding to the beam is idle in the first listening slot.

In an optional implementation manner, the processing module 702 is specifically configured to change the execution status identifier of the beam from the first identifier to the third identifier if the beam performs channel detection of the second LBT and it is detected that the channel corresponding to the beam is idle in the second listening slot.

In an alternative embodiment, the processing module 702 is specifically configured to, if the execution status of the polled beam is marked with the third identifier, start the target timer and perform detection of the third listening slot on the channel corresponding to the beam.

In an alternative embodiment, the processing module 702 is specifically configured to repeat the detection of the third listening slot for the channel corresponding to the beam if it is detected that the channel corresponding to the beam is idle during the third listening and the target counter is not zero.

In an alternative embodiment, the processing module 702 is specifically configured to change the execution status identifier of the beam from the third identifier to the second identifier if it is detected that the channel corresponding to the beam is idle during the third listening and the target counter is zero.

In an optional implementation manner, the processing module 702 is specifically configured to change the execution status identifier of the beam from the third identifier to the first identifier if it is detected that the channel corresponding to the beam is occupied during the third listening.

In an alternative embodiment, each beam in the set of beams performs data transmission after detecting that the channel is free, or after all beams in the set of beams detect that the channel is free.

In an alternative embodiment, the processing module 702 is further configured to perform channel detection of LBT for each beam of the beam set if the number of times that the channel corresponding to the wide beam is continuously detected to be occupied exceeds the first time threshold when the beam set is spatially dispersed or LBT is performed for the wide beam covering the beam set.

In an alternative embodiment, the processing module 702 is further configured to discard performing LBT on the first beam in the beam set if the number of times that the channel corresponding to the first beam is continuously detected to be occupied exceeds the second threshold number of times when performing LBT on the first beam in the beam set.

The communication device provided in the embodiment of the present application may perform the actions of the communication method in the above embodiment, and its implementation principle and technical effects are similar, and are not described herein again.

Fig. 15 is a schematic structural diagram of an electronic device according to an embodiment of the present application. As shown in fig. 15, the electronic device may include: a processor 81 (e.g., a CPU), a memory 82, a receiver 83, and a transmitter 84; the receiver 83 and the transmitter 84 are coupled to the processor 81, the processor 81 controlling the receiving action of the receiver 83, the processor 81 controlling the transmitting action of the transmitter 84. The memory 82 may comprise a high-speed RAM memory or may further comprise a non-volatile memory NVM, such as at least one magnetic disk memory, in which various information may be stored in the memory 82 for performing various processing functions and implementing method steps of embodiments of the present application. Optionally, the electronic device according to the embodiment of the present application may further include: a power supply 85, a communication bus 86, and a communication port 87. The receiver 83 and the transmitter 84 may be integrated in a transceiver of the electronic device or may be separate transceiver antennas on the electronic device. The communication bus 86 is used to enable communication connections between the components. The communication port 87 is used for realizing connection communication between the electronic device and other peripheral devices.

In the embodiment of the present application, the memory 82 is configured to store computer executable program codes, where the program codes include information; when the processor 81 executes the information, the information causes the processor 81 to execute the processing action on the terminal device side in the above method embodiment, causes the transmitter 84 to execute the transmitting action on the terminal device side in the above method embodiment, and causes the receiver 83 to execute the receiving action on the terminal device side in the above method embodiment, so that the implementation principle and technical effects are similar, and are not repeated here.

Or, when the processor 81 executes the information, the information causes the processor 81 to execute the processing action on the network device side in the above method embodiment, causes the transmitter 84 to execute the sending action on the network device side in the above method embodiment, and causes the receiver 83 to execute the receiving action on the network device side in the above method embodiment, so that the implementation principle and technical effects are similar, and are not repeated herein.

The embodiment of the application also provides a communication system which comprises the terminal equipment and the network equipment so as to execute the communication method.

The embodiment of the application also provides a chip, which comprises a processor and an interface. Wherein the interface is used for inputting and outputting data or instructions processed by the processor. The processor is configured to perform the methods provided in the method embodiments above. The chip can be applied to terminal equipment or network equipment.

The present invention also provides a computer-readable storage medium, which may include: various media capable of storing program codes, such as a usb disk, a removable hard disk, a Read-Only Memory (ROM), a random access Memory (RAM, random Access Memory), a magnetic disk, or an optical disk, and the like, specifically, the computer-readable storage medium stores program information therein, and the program information is used in the above communication method.

The present application also provides a program which, when executed by a processor, is configured to perform the communication method provided by the above method embodiment.

The present application also provides a program product, such as a computer-readable storage medium, having instructions stored therein, which when run on a computer, cause the computer to perform the communication method provided by the above-described method embodiments.

The embodiment of the application also provides a device, which may include: at least one processor and interface circuitry, program instructions being involved to be executed in the at least one processor to cause the communication device to implement the communication method provided by the above-described method embodiments.

The embodiment of the application also provides a communication device which is used for executing the communication method provided by the embodiment of the method.

In the above embodiments, it may be implemented in whole or in part by software, hardware, firmware, or any combination thereof. When implemented in software, may be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, the processes or functions in accordance with embodiments of the present invention are produced in whole or in part. The computer may be a general purpose computer, a special purpose computer, a computer network, or other programmable apparatus. The computer instructions may be stored in or transmitted from one computer-readable storage medium to another, for example, by wired (e.g., coaxial cable, optical fiber, digital Subscriber Line (DSL)), or wireless (e.g., infrared, wireless, microwave, etc.) means from one website, computer, server, or data center. Computer readable storage media can be any available media that can be accessed by a computer or data storage devices such as servers, data centers, etc. that contain an integration of one or more of the available media. The usable medium may be a magnetic medium (e.g., floppy Disk, hard Disk, magnetic tape), an optical medium (e.g., DVD), or a semiconductor medium (e.g., solid State Disk (SSD)), etc.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and not for limiting the same; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the invention.

Claims

A method of communication, the method comprising:

channel detection is carried out on each beam of a beam set in channel occupation time through Listen Before Talk (LBT), and the LBT comprises a first LBT and a second LBT;

wherein at least one beam of the set of beams performs channel detection through the first LBT.
The method of claim 1, wherein the first LBT occupies less time domain resources than the second LBT occupies.
The method according to claim 1 or 2, characterized by, before said performing channel detection of listen before talk, LBT, for each beam of the set of beams in the channel occupation time, further comprising:

And determining the number of beams for channel detection through the first LBT according to a preset value.
The method according to claim 1 or 2, wherein said performing channel detection of listen before talk, LBT, on each beam of a set of beams in a channel occupation time comprises:

and carrying out channel detection on each beam in the beam set through the first LBT.
The method of claim 4, wherein after said channel detection by said first LBT for each beam in said set of beams, said method further comprises:

and detecting that the channel is occupied when the beams in the beam set are subjected to channel detection through the first LBT, and carrying out channel detection on the beams with the occupied channels through the second LBT.
The method according to any one of claims 1-5, wherein the first LBT is configured to perform detection of a first listening slot for a channel corresponding to the beam until it is detected that the channel corresponding to the beam ends access to the channel corresponding to the beam when the first listening slot is idle.
The method of claim 6, wherein the second LBT is configured to continuously detect a second listening slot for the channel corresponding to the beam until it is detected that the channel corresponding to the beam is idle in the second listening slot and the target counter is 0, and end access of the channel corresponding to the beam.
The method of claim 7, wherein the initial value of the target counter is a random number between zero and a maximum value of a contention window.
The method according to claim 7 or 8, wherein the target counter is configured to decrement by one each time the channel corresponding to the beam is detected to be idle in a third listening slot.
The method according to any of claims 7-9, wherein the channel detection of the LBT is performed according to the order of the beam index of each beam of the set of beams.
The method of claim 10 wherein the second LBT is further configured to start the target timer each time it is detected that the channel corresponding to the beam is idle in the second listening slot and to perform detection of a third listening slot for the channel corresponding to the beam.
The method of claim 11, wherein after the detecting of the third listening slot for the channel corresponding to the beam, the method further comprises:

and if the channel corresponding to the beam is detected to be idle in a third monitoring time slot and the target counter is not zero, repeating the detection of the third monitoring time slot on the channel corresponding to the beam.
The method of claim 10, wherein during the detecting of the third listening slot for the channel corresponding to the beam, the method further comprises:

and if the channel corresponding to the wave beam is detected to be occupied in the third monitoring, repeating the detection of the second monitoring time slot on the channel corresponding to the wave beam.
The method according to any of claims 7-9, wherein the channel detection of the LBT is performed by identifying polls based on an execution status of each beam of the set of beams.
The method of claim 14, wherein the execution status identification comprises a first identification, a second identification, and a third identification, the first identification being used to characterize that the LBT channel detection is not complete, the second identification being used to characterize that the LBT channel detection is complete, and the third identification being used to characterize that the channel corresponding to the beam is detected to be idle in the second listening slot.
The method of claim 15, wherein said performing channel detection for listen before talk, LBT, on each beam of the set of beams in the channel occupancy time comprises:

and if the beam executes the channel detection of the first LBT and detects that the channel corresponding to the beam is idle in the first monitoring time slot, changing the execution state identification of the beam from the first identification to the second identification.
The method of claim 15, wherein said performing channel detection for listen before talk, LBT, on each beam of the set of beams in the channel occupancy time comprises:

and if the beam executes channel detection of a second LBT and the channel corresponding to the beam is detected to be idle in the second monitoring time slot, changing the execution state identification of the beam from the first identification to the third identification.
The method of claim 15, wherein said performing channel detection for listen before talk, LBT, on each beam of the set of beams in the channel occupancy time comprises:

if the execution state of the polled wave beam is marked as the third mark, starting the target timer and detecting a third monitoring time slot for a channel corresponding to the wave beam.
The method of claim 18, wherein said performing channel detection for listen before talk, LBT, on each beam of the set of beams in the channel occupancy time comprises:

and if the channel corresponding to the beam is detected to be idle in the third monitoring and the target counter is not zero, repeating the detection of the third monitoring time slot on the channel corresponding to the beam.
The method of claim 18, wherein said performing channel detection for listen before talk, LBT, on each beam of the set of beams in the channel occupancy time comprises:

and if the channel corresponding to the beam is detected to be idle in the third monitoring and the target counter is zero, changing the execution state identification of the beam from the third identification to the second identification.
The method of claim 18, wherein said performing channel detection for listen before talk, LBT, on each beam of the set of beams in the channel occupancy time comprises:

and if the channel corresponding to the beam is detected to be occupied during the third monitoring, changing the execution state identification of the beam from the third identification to the first identification.
The method according to any of claims 1-21, wherein each beam in the set of beams performs data transmission after detecting that a channel is free, or wherein all beams in the set of beams perform data transmission after detecting that a channel is free.
The method according to any of claims 1-21, wherein said performing channel detection of listen before talk, LBT, on each beam of a set of beams in a channel occupancy time further comprises:

And if the number of times that the channels corresponding to the wide beams are continuously detected to be occupied exceeds a first time threshold value when the beams are spatially dispersed or the LBT is executed on the wide beams covering the beams, executing the channel detection of the LBT on each beam of the beams.
The method according to any of claims 1-21, wherein said performing channel detection of listen before talk, LBT, on each beam of a set of beams in a channel occupancy time further comprises:

and if the number of times that the channel corresponding to the first beam is continuously detected to be occupied exceeds a second threshold when the LBT is executed on the first beam in the beam set, discarding the LBT executed on the first beam in the beam set.
A communication device, the device comprising:

a processing module, configured to perform channel detection on each beam of a beam set in a channel occupation time through listen before talk LBT, where the LBT includes a first LBT and a second LBT;

wherein at least one beam of the set of beams performs channel detection through the first LBT.
The apparatus of claim 25, wherein the first LBT occupies less time domain resources than the second LBT occupies.
The apparatus of claim 25 or 26, wherein the processing module is further configured to determine a number of beams for channel detection by the first LBT according to a preset value.
The apparatus according to claim 25 or 26, wherein the processing module is configured to perform channel detection through the first LBT for each beam in the set of beams.
The apparatus of claim 28, wherein the processing module is configured to detect that a channel is occupied when a beam in the set of beams is detected as being channel detected by the first LBT, and to channel detect a beam with a channel occupied by the second LBT.
The apparatus of any one of claims 25-29, wherein the first LBT is configured to perform detection of a first listening slot for a channel corresponding to the beam until it is detected that the channel corresponding to the beam ends access to the channel corresponding to the beam when the first listening slot is idle.
The apparatus of any of claims 30, wherein the second LBT is configured to continue detection of a second listening slot for the channel corresponding to the beam until it is detected that the channel corresponding to the beam is idle in the second listening slot and the target counter is 0, and to end access of the channel corresponding to the beam.
The apparatus of claim 31, wherein the initial value of the target counter is a random number between zero and a maximum value of a contention window.
The apparatus of claim 31 or 32, wherein the target counter is configured to decrement by one each time a channel corresponding to the beam is detected to be idle in a third listening slot.
The apparatus of any of claims 31-33, wherein the channel detection of the LBT is performed according to a sequence of beam indices for each beam of the set of beams.
The apparatus of claim 34, wherein the second LBT is further configured to start the target timer and to detect a third listening slot for a channel corresponding to the beam each time the channel corresponding to the beam is detected to be idle in the second listening slot.
The apparatus of claim 34, wherein the processing module is configured to repeat the detection of the third listening slot for the channel corresponding to the beam if it is detected that the channel corresponding to the beam is idle in the third listening slot and the target counter is not zero.
The apparatus of claim 34, wherein the processing module is configured to repeat the detection of the second listening slot for the channel corresponding to the beam if it is detected that the channel corresponding to the beam is occupied during a third listening.
The apparatus of any of claims 31-33, wherein the channel detection of the LBT is performed by a poll based on an execution status identification of each beam of the set of beams.
The apparatus of claim 38, wherein the execution status identification comprises a first identification, a second identification, and a third identification, the first identification being used to characterize that channel detection for the LBT is not complete, the second identification being used to characterize that channel detection for the LBT is complete, and the third identification being used to characterize that a channel corresponding to the beam is detected to be idle in the second listening slot.
The apparatus of claim 39, wherein the processing module is configured to change an execution status identification of the beam from the first identification to the second identification if the beam performs channel detection of a first LBT and it is detected that a channel corresponding to the beam is idle in the first listening slot.
The apparatus of claim 39, wherein the processing module is configured to change the execution status identification of the beam from the first identification to the third identification if the beam performs channel detection of a second LBT and it is detected that a channel corresponding to the beam is idle in the second listening slot.
The apparatus of claim 39, wherein the processing module is configured to, if the execution status of the polled beam is marked with the third identifier, start the target timer and perform detection of a third listening slot for a channel corresponding to the beam.
The apparatus of claim 42, wherein the processing module is specifically configured to repeat the detection of the third listening slot for the channel corresponding to the beam if it is detected that the channel corresponding to the beam is idle at the third listening time and the target counter is not zero.
The apparatus of claim 42, wherein the processing module is specifically configured to change the execution status identifier of the beam from the third identifier to the second identifier if it is detected that the channel corresponding to the beam is idle at the third listening time and the target counter is zero.
The apparatus of claim 42, wherein the processing module is specifically configured to change the execution status identifier of the beam from the third identifier to the first identifier if it is detected that the channel corresponding to the beam is occupied during the third listening.
The apparatus of any of claims 25-45, wherein each beam in the set of beams performs data transmission after detecting that a channel is idle, or wherein all beams in the set of beams perform data transmission after detecting that a channel is idle.
The apparatus of any one of claims 25-45, wherein the processing module is further configured to perform channel detection for each beam of the set of beams if the number of times that the channel corresponding to the wide beam is continuously detected to be occupied exceeds a first threshold when the set of beams is spatially dispersed or the LBT is performed for a wide beam that covers the set of beams.
The apparatus of any one of claims 25-45, wherein the processing module is further configured to discard performing the LBT for a first beam in the set of beams if a number of times the channel corresponding to the first beam is continuously detected as being occupied exceeds a second threshold.
An electronic device, comprising:

the receiver is configured to communicate with the network device;

The memory stores computer-executable instructions;

the processor executing computer-executable instructions stored in the memory, causing the processor to perform the communication method of any one of claims 1 to 25.
A chip, comprising: a processor and a memory;

the processor being adapted to call and run a computer program from the memory, causing a device on which the chip is mounted to perform the method of any one of claims 1-25.
A computer readable storage medium storing a computer program for causing a computer to perform the method of any one of claims 1-25.
A computer program product comprising program instructions involved which, when executed, implement the method of any one of claims 1-25.
A computer program, characterized in that the computer program causes a computer to perform the method of any of claims 1-25.
An apparatus, the apparatus comprising: at least one processor and interface circuitry, the program instructions being involved to execute in the at least one processor to cause the communication device to implement the method of any one of claims 1-25.
A communication device, characterized in that the device is adapted to perform the method of any of claims 1-25.