CN107835516B

CN107835516B - Method and apparatus for shared spectrum communications

Info

Publication number: CN107835516B
Application number: CN201710918751.5A
Authority: CN
Inventors: 李明菊; 张云飞
Original assignee: Yulong Computer Telecommunication Scientific Shenzhen Co Ltd
Current assignee: Yulong Computer Telecommunication Scientific Shenzhen Co Ltd
Priority date: 2017-09-30
Filing date: 2017-09-30
Publication date: 2021-11-16
Anticipated expiration: 2037-09-30
Also published as: CN107835516A

Abstract

The embodiment of the invention discloses a method and a device for shared spectrum communication, wherein the method comprises the following steps: performing channel detection on a channel in a beam direction of a first beam of a plurality of beams, the beam directions of the plurality of beams being different; transmitting a signal through the channel in the beam direction of the first beam upon detecting that the channel in the beam direction of the first beam is idle. The method of the embodiment of the invention can ensure the accuracy of channel detection in each beam direction and improve the frequency spectrum utilization rate and the throughput of a communication system.

Description

Method and apparatus for shared spectrum communications

Technical Field

The present invention relates to the field of communications technologies, and in particular, to a method and an apparatus for shared spectrum communications.

Background

In a Long Term Evolution (LTE) communication system, when a network device and a terminal device communicate using a shared licensed spectrum or an unlicensed spectrum, a signal is transmitted omni-directionally through an omni-directional antenna, so that channel detection is omni-directional channel detection before channel access.

In a New Radio (NR) communication system, if a channel detection method in an LTE communication system is used, channel detection is inaccurate, thereby reducing spectrum efficiency and reducing throughput of the communication system.

Disclosure of Invention

The invention provides a method and a device for shared spectrum communication, which can ensure the accuracy of channel detection, improve the utilization rate of a spectrum and improve the throughput of a communication system.

In a first aspect, a method for shared spectrum communication is provided, including: performing channel detection on a channel in a beam direction of a first beam of a plurality of beams, the beam directions of the plurality of beams being different; transmitting a signal through the channel in the beam direction of the first beam upon detecting that the channel in the beam direction of the first beam is idle.

The method for sharing spectrum communication of the embodiment of the invention realizes channel detection on the channel in the beam direction of one beam in a plurality of beams, thereby being capable of carrying out channel detection based on the beam and ensuring the accuracy of channel detection in each beam direction, thereby improving the spectrum utilization rate and the throughput of a communication system.

With reference to the first aspect, in an implementation manner of the first aspect, there are multiple carriers or multiple bandwidth parts BWPs in a beam direction of the first beam;

wherein the performing channel detection on a channel in a beam direction of a first beam of the plurality of beams comprises: performing channel detection independently for the multiple carriers or multiple BWPs; or, performing channel detection on the multiple carriers or the multiple BWPs in a carrier aggregation manner.

With reference to the first aspect and the foregoing implementation manner of the first aspect, in another implementation manner of the first aspect, the transmittable time of each beam is a preset transmission time, and the transmittable time of each beam is a time at which a channel in a beam direction of the beam can be used for transmitting a signal, where the method further includes:

determining a channel detection time corresponding to a beam direction of the first beam according to a transmittable time of the first beam and a transmittable time of a second beam, wherein the second beam is a previous beam whose transmittable time is before the transmittable time of the first beam;

wherein the performing channel detection on a channel in a beam direction of a first beam of the plurality of beams comprises: and performing channel detection on the channel in the beam direction of the first beam within the channel detection time corresponding to the beam direction of the first beam.

When the channel is detected, the channel detection is carried out on the channel in the beam direction of the beam only within the channel detection time corresponding to the beam direction of the beam, so that the channel occupation in the beam direction of each beam can be ensured, and the coverage area of a cell is improved.

With reference to the first aspect and the foregoing implementation manner, in another possible implementation manner of the first aspect, a channel detection duration corresponding to a beam direction of each beam is a preset value;

wherein the performing channel detection on a channel in a beam direction of a first beam of the plurality of beams comprises: and performing channel detection on the channel in the beam direction of the first beam within the channel detection duration corresponding to the beam direction of the first beam.

With reference to the first aspect and the foregoing implementation manner of the first aspect, in another implementation manner of the first aspect, the performing channel detection on a channel in a beam direction of the first beam within a channel detection duration corresponding to the beam direction of the first beam includes: if the channel in the beam direction of the first beam is idle in the first detection granularity, selecting a value N of a random number in a first competition window, and carrying out channel detection by taking the second detection granularity as the detection granularity; if the channel in the beam direction of the first beam is idle and the value of the random number is not 0, the value of the random number is reduced by 1, and the channel detection is continuously carried out by taking the second detection granularity as the detection granularity; if the channel in the beam direction of the first beam is busy in the second detection granularity, performing channel detection again by taking the first detection granularity as the detection granularity; and if the channel in the beam direction of the first beam is detected to be idle again at the first detection granularity and the value of the random number is not 0, subtracting 1 from the value of the random number, and resuming the channel detection with the second detection granularity as the detection granularity.

With reference to the first aspect and the foregoing implementation manner of the first aspect, in another implementation manner of the first aspect, the method further includes:

when the channel detection duration corresponding to the beam direction of the first beam is ended and the channel idleness in the beam direction of the first beam is not detected, determining that the value of the random number is reduced from N to M, and performing channel detection on channels in the beam directions of other beams in the plurality of beams, wherein M is not 0; when channel detection is performed again on the channel in the beam direction of the first beam, the value of the random number is determined according to one of the following ways: reselecting the value of the random number in the first contention window, reselecting the value of the random number in a second contention window, and determining M as the value of the random number, wherein the second contention window is larger than the first contention window.

With reference to the first aspect and the foregoing implementation manner of the first aspect, in another implementation manner of the first aspect, the method is performed by a network device, and before performing channel detection on a channel in a beam direction of the first beam of the multiple beams, the method further includes: and scheduling the channel in the beam direction of the first beam to the terminal equipment.

That is, the network device schedules the terminal device first, and only the channel in the beam direction of the beam of the scheduled terminal device needs to perform channel detection.

With reference to the first aspect and the foregoing implementation manner of the first aspect, in another implementation manner of the first aspect, the performing channel detection on a channel in a beam direction of a first beam of the multiple beams includes: and performing channel detection on the channel in the beam direction of the first beam according to the principle that the higher the requirement of the signal to be transmitted on the transmission delay and the higher the detection priority of the channel.

Therefore, different requirements of different signals on transmission delay can be met.

With reference to the first aspect and the foregoing implementation manner of the first aspect, in another implementation manner of the first aspect, the performing channel detection on a channel in a beam direction of the first beam includes: and performing channel detection on the channel in the beam direction of the first beam according to a principle that the higher the requirement of the signal to be transmitted on the transmission delay is, the higher the priority of the channel detection parameter used in the channel detection is.

Therefore, the terminal equipment which has high requirements on transmission delay can be guaranteed to be preferentially accessed to the channel, signal transmission is realized, and user experience is improved.

With reference to the first aspect and the foregoing implementation manner of the first aspect, in another implementation manner of the first aspect, before the transmitting a signal through a channel in the beam direction of the first beam when the channel in the beam direction of the first beam is detected to be idle, the method further includes: performing channel detection on channels in beam directions of other beams of the plurality of beams; and scheduling a channel in a beam direction of a target beam in the plurality of beams to a terminal device, where the target beam is a beam in the plurality of beams in which the channel in the beam direction is idle, and the target beam includes the first beam.

That is, the network device first performs channel detection on the channel in the beam direction of each beam, and schedules an idle channel to the terminal device.

With reference to the first aspect and the foregoing implementation manner of the first aspect, in another implementation manner of the first aspect, the method is performed by a terminal device, and the method further includes: and receiving scheduling information sent by a network device, wherein the scheduling information is used for instructing the terminal device to transmit signals through at least one beam of the plurality of beams, and the at least one beam comprises the first beam.

The terminal device performs channel detection according to the indication of the network device, the network device may further specifically indicate when the terminal device transmits uplink data in what bandwidth, and the terminal device performs channel detection in the bandwidth designated by the network device in the beam direction of the corresponding beam. Unnecessary power consumption caused by channel detection of other channels in the beam direction which does not need to be subjected to channel detection by the terminal equipment can be avoided.

With reference to the first aspect and the foregoing implementation manner of the first aspect, in another implementation manner of the first aspect, the performing channel detection on a channel in a first beam direction in a plurality of beams includes: and performing channel detection on the channel in the beam direction of at least one beam of the multiple beams according to the principle that the higher the requirement of the signal to be transmitted on the transmission delay and the higher the detection priority of the channel.

With reference to the first aspect and the foregoing implementation manner of the first aspect, in another implementation manner of the first aspect, the terminal device transmits a plurality of signals through the first beam;

wherein the transmitting signals through the channel in the first beam direction comprises:

and transmitting the plurality of signals through the channel in the first wavenumber direction according to a principle that the higher the transmission delay requirement is, the higher the transmission priority of the signals is.

Therefore, signals with high transmission delay requirements can be sent preferentially, and user experience is improved.

With reference to the first aspect and the foregoing implementation manner of the first aspect, in another implementation manner of the first aspect, when it is detected that channels in a beam direction of at least one beam of the plurality of beams are busy, the method further includes: detecting channels in beam directions of beams other than the at least one beam among the plurality of beams; and transmitting signals through the channels in the beam directions of the other beams when the channels in the beam directions of the other beams are detected to be idle.

With reference to the first aspect and the foregoing implementation manner of the first aspect, in another implementation manner of the first aspect, the method is performed by a terminal device, and the method further includes: detecting channels in the beam directions of other beams in the plurality of beams when it is detected that the duration of channel busy in the beam direction of the first beam is greater than or equal to a preset duration; and when detecting that the channels in the beam directions of other beams are idle, transmitting signals through the channels in the beam directions of the other beams.

That is to say, when the network device requires that the channel detected by the terminal device is not idle for a certain time, the terminal device may perform channel detection on the channel in the beam direction of another beam, and may also perform signal transmission if the channel in the beam direction of another beam is idle. The signal of the terminal equipment can be transmitted in time, and the user experience is improved.

In a second aspect, an apparatus is provided for performing the method of the first aspect or any possible implementation manner of the first aspect. In particular, the apparatus comprises means for performing the method of the first aspect described above or any possible implementation manner of the first aspect.

In a third aspect, an apparatus is provided, comprising: a storage unit for storing instructions and a processor for executing the instructions stored by the memory, and when the processor executes the instructions stored by the memory, the execution causes the processor to perform the first aspect or the method of any possible implementation of the first aspect.

In a fourth aspect, there is provided a computer readable medium for storing a computer program comprising instructions for carrying out the method of the first aspect or any possible implementation manner of the first aspect.

In a fifth aspect, there is provided a computer program product comprising instructions which, when executed by a computer, cause the computer to perform the method for shared spectrum communication in the first aspect or any possible implementation manner of the first aspect, and in particular, may be executed on an apparatus of the second aspect.

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 description of the embodiments or the prior art will be briefly introduced below, it is obvious that the drawings in the following description are only some embodiments described in the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic flow diagram of a method for shared spectrum communications in accordance with an embodiment of the present invention.

Fig. 2 is another schematic flow diagram of a method for shared spectrum communications in accordance with an embodiment of the present invention.

Fig. 3 is yet another schematic flow diagram of a method for shared-spectrum communications in accordance with an embodiment of the present invention.

Fig. 4 is a schematic structural diagram of an apparatus for shared spectrum communication according to an embodiment of the present invention.

Fig. 5 is a schematic structural diagram of a network device according to an embodiment of the present invention.

Fig. 6 is a schematic structural diagram of a terminal device according to an embodiment of the present invention.

Detailed Description

In order to make those skilled in the art better understand the technical solution of the present invention, the technical solution in the embodiment of the present invention will be clearly and completely described below with reference to the drawings in the embodiment of the present invention, and it is obvious that the described embodiment is only a part of the embodiment of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the embodiment of the present invention, the Terminal device may include, but is not limited to, a Mobile Station (MS), a Mobile Terminal (Mobile Terminal), a Mobile phone (Mobile Telephone), a User Equipment (UE), a handset (handset), a portable device (portable Equipment), a vehicle (vehicle), etc., and the Terminal device may communicate with one or more core networks through a Radio Access Network (RAN), for example, the Terminal device may be a Mobile phone (or referred to as a "cellular" phone), a computer with a wireless communication function, and the Terminal device may also be a portable, pocket, handheld, computer-embedded, or vehicle-mounted Mobile apparatus.

The network device related to the embodiment of the invention is a device which is deployed in a wireless access network and used for providing a wireless communication function for terminal equipment. The network device may be a base station, and the base station may include various macro base stations, micro base stations, relay stations, access points, and the like. In systems employing different radio access technologies, the names of devices having a base station function may differ. For example, in an LTE network, referred to as an Evolved node B (eNB or eNodeB), in a third Generation (3rd Generation, 3G) network, referred to as a node B (node B), and so on.

The technical scheme of the embodiment of the invention can be applied to a 5G system or a New Radio (NR) system. In NR, the unlicensed spectrum is high in frequency, and in order to increase the coverage, the network device uses a plurality of beams (beams) with different orientations for transmission and reception of signals, i.e., Beam-based transmission and reception. The use conditions of channels in different beam directions are different, and if an omnidirectional channel detection method in an LTE system is adopted, the channel detection in each beam direction is inaccurate, the spectrum efficiency is reduced, and the throughput of the communication system is reduced. In addition to the shared unlicensed spectrum, when a licensed spectrum is used, a single resource may be simultaneously allocated to a plurality of terminals, and channel detection is also required before the plurality of terminals use the resource. In order to solve the above technical problem when sharing a spectrum, an embodiment of the present invention provides a method for shared spectrum communication, which can ensure accuracy of channel detection in each beam direction, improve frequency efficiency, and improve throughput of a communication system.

The technical solutions of the embodiments of the present invention will be described in detail below. Fig. 1 is a schematic flow diagram of a method for shared spectrum communication in accordance with an embodiment of the present invention. As shown in fig. 1, the method 100 includes:

s110, a channel in a beam direction of a first beam of a plurality of beams is detected, the plurality of beams having different beam directions.

It should be noted that the first beam may be any one of a plurality of beams.

And S120, when it is detected that the channel in the beam direction of the first beam is idle, transmitting a signal through the channel in the beam direction of the first beam.

Optionally, in some embodiments, the first beam has multiple carriers or multiple Bandwidth parts (BWPs) in the beam direction, and when performing channel detection, the channel detection is performed independently on the multiple carriers or multiple BWPs, or the channel detection is performed by carrier aggregation on the multiple carriers or multiple BWPs. When the channel detection is carried out by adopting a carrier aggregation mode, one carrier or one BWP is selected to carry out a complex channel detection process. Here, the complex Channel detection procedure may be, for example, a Channel detection method similar to the LTE Shared spectrum transmission Physical Downlink Shared Channel (PDSCH), where Channel detection for a delay Period (Defer Period) is performed on the other carrier or BWP between the value of the random number on the selected carrier or BWP being reduced from N to 0, and if the other carrier or BWP is idle, it indicates that the other carrier or BWP is idle as the same as the carrier or BWP in which the random number is reduced from N to 0.

Optionally, as an example, the transmittable time of each beam is a preset transmittable time, and the transmittable time of each beam is a time at which a channel in the beam direction of the beam can be used for transmitting a signal. In this case, the channel detection time corresponding to the beam direction of the first beam is determined based on the transmittable time of the first beam and the transmittable time of the second beam, and then the channel in the beam direction of the first beam is detected during the channel detection time corresponding to the beam direction of the first beam. In this example, the second beam is the previous beam whose transmittable time is before the transmittable time of the first beam.

Specifically, in some embodiments, the network device and the terminal device may agree on the transmittable time of each beam in advance, or the network device may notify the terminal device of the transmittable time of each beam through signaling, where a time interval between the transmittable time of each beam and the transmittable time of a previous beam is the channel detection time corresponding to the beam direction of the beam.

For example, for transmission of a Synchronization Signal (SS) Block (Block), assuming that transmission positions of two SS blocks within 14 symbols of one subframe are respectively a symbol numbered 2-5 and a symbol numbered 8-11 for a communication system with a subcarrier spacing of 15kHz, for a beam transmitting the first SS Block on the symbol numbered 2-5, at least the symbols numbered 0 and 1 can be used to detect whether a channel in the beam direction of the beam is free. For the beam transmitting the second SS Block on symbols numbered 8-11, symbols numbered 6 and 7 may be used for channel detection of the channel in the beam direction of the beam. For transmitting a beam of a third SS Block on symbols numbered 2-5 of another subframe, symbols numbered 12 and 13 of one subframe preceding the other subframe, and symbols numbered 0 and 1 of the other subframe may be used for channel detection of channels in the beam direction of the beam.

Optionally, as another example, the channel detection duration corresponding to the beam direction of each beam is a preset value, and when performing channel detection on the channel in the beam direction of the first beam, the channel detection is performed on the channel in the beam direction of the first beam within the channel detection duration corresponding to the beam direction of the first beam. That is, the length of the channel detection time corresponding to the beam direction of each beam is fixed or preset, if the beam is detected to be idle within the channel detection duration corresponding to the beam direction of one beam, a signal can be transmitted on the channel in the beam direction of the beam, otherwise, the signal cannot be transmitted in the beam direction of the beam, and channel detection can be performed on the channel in the next beam direction.

For example, for the transmission of data signals, the channel detection may be performed periodically on the channel in the beam direction of each beam. And if the idle channel is detected in the channel detection duration corresponding to the beam direction of one beam, transmitting the data signal, and after the channel occupation time is over or the data is sent, performing channel detection on the channel in the next beam direction. But if the channel in the beam direction of the beam is not detected to be idle in the channel detection duration corresponding to the beam direction of the beam, the channel in the next beam direction is detected.

Specifically, in some embodiments, within the channel detection duration corresponding to the beam direction of the first beam, the channel in the beam direction of the first beam is detected according to the following manner: if the channel in the beam direction of the beam is idle in the first detection granularity, selecting a value N of a random number in a first competition window, and carrying out channel detection by taking the second detection granularity as the detection granularity; if the channel in the beam direction of the beam is idle and the value of the random number is not 0, the value of the random number is reduced by 1, and the channel detection is continuously carried out by taking the second detection granularity as the detection granularity; if the channel in the beam direction of the beam is busy, the channel detection is carried out by taking the first detection granularity as the detection granularity again; if the channel in the beam direction of the beam is detected to be idle again at the first detection granularity and the value of the random number is not 0, subtracting 1 from the value of the random number, and resuming the channel detection with the second detection granularity as the detection granularity; the channel is not indicated as idle until the value of the random number is reduced to 0.

For example, if the first detection granularity is Defer Period (16us + K9 us), first detecting whether a channel in the Defer Period is idle, if the channel is idle, selecting a value N of a random number in a contention window, then performing detection with 9us as the granularity, and if the channel is idle, then performing N-1, and continuing to perform detection with 9us as the granularity; otherwise, performing channel detection by using the defer period as the granularity, when the channel is detected to be idle, performing N-1, and resuming the detection by using 9us as the granularity until the random number is 0 to indicate that the channel is idle, wherein the channel can be used.

However, when the channel detection is performed on the channels in the beam direction according to the first detection granularity and the second granularity, the required channel detection time duration may be longer. If the value of the random number is not reduced to 0 but reduced to M in the channel detection duration corresponding to the beam direction of the first beam, that is, the channel in the beam direction of the first beam is not detected to be idle in the channel detection duration corresponding to the beam direction of the first beam, performing channel detection on the channels in the beam directions of other beams in the plurality of beams; when channel detection is performed again on the channel in the beam direction of the first beam, the value of the random number may be determined according to one of the following ways: reselecting the value of the random number in a first contention window, reselecting the value of the random number in a second contention window, and determining M as the value of the random number, wherein the second contention window is larger than the first contention window.

In other words, if the value of the random number is reduced to M within the channel detection duration corresponding to the beam direction of one beam, when the channel detection is performed on the channel in the beam direction of the beam again, the contention window may be kept unchanged, the value of the random number may be reselected within the contention window, or the contention window may be increased, the value of the random number may be reselected within the increased contention window, or M may be used as the value of the random number. When M is used as the value of the random number, channel detection is performed for the first time with the Defer Period as the granularity, and if the value of the idle random number is decreased by 1 (that is, the value of the random number becomes M-1), channel detection is performed with the granularity of 9 us.

Optionally, as another example, the channel detection duration corresponding to the beam direction of each beam is not fixed, and when performing channel detection on the channel in the beam direction of the first beam, the channel detection is performed on the channel in the beam direction of the first beam until the channel is detected to be idle, and then the signal is transmitted on the channel in the beam direction of the first beam. After the channel occupation time is over or after the signal transmission is completed, channel detection is performed on a channel in the beam direction of the next beam.

In this embodiment of the present invention, optionally, the method 100 is performed by a network device, and as shown in fig. 2, before performing channel detection on a channel in a beam direction of a first beam of the multiple beams, the method 100 further includes:

s130, scheduling the channel in the beam direction of the first beam to a terminal device.

Specifically, in some embodiments, the network device schedules the terminal device first, and only the channel in the beam direction of the beam corresponding to the terminal device that is scheduled needs to be subjected to channel detection.

Optionally, as an example, the network device performs channel detection on the channel in the beam direction of the first beam according to a principle that the higher the requirement of the signal to be transmitted on the transmission delay is, the higher the detection priority of the channel is. That is, the higher the transmission delay requirement, the higher the channel detection priority of the channel in the beam direction of the beam on which the transmission content is located. For example, it is preferable to detect whether a channel in a beam direction of a beam for transmitting Ultra-high Reliability and Ultra-Low delay (URLLC) service data is idle, and detect whether a channel in a beam direction of a beam for transmitting Enhanced Mobile Broadband (eMBB) service data is idle until the transmission of the URLLC service data is completed.

It is assumed that channels in the beam direction of 3 beams (beam 1, beam 2, and beam 3) are scheduled to the terminal device, where a signal to be transmitted on the channel in the beam direction of beam 2 has a higher requirement for transmission delay than a channel to be transmitted on the channel in the beam direction of beam 1, and a signal to be transmitted on the channel in the beam direction of beam 1 has a higher requirement for transmission delay than a signal to be transmitted on the channel in the beam direction of beam 3. The network device first performs channel detection on the channel in the beam direction of beam 2, then performs channel detection on the channel in the beam direction of beam 1, and finally performs channel detection on the channel in the beam direction of beam 3.

Alternatively, as an example, the higher the transmission delay requirement, the higher the priority of the transmitted content to use the channel detection parameters, i.e., the parameters that access the channel most easily. That is to say, the network device performs channel detection on the channel in the beam direction of the first beam according to the principle that the higher the requirement of the signal to be transmitted on the transmission delay is, the higher the priority of the channel detection parameter used in channel detection is.

In this embodiment of the present invention, optionally, the method 100 is performed by a network device, and when the network device detects that a channel in a beam direction of a first beam is idle, the network device performs channel detection on channels in beam directions of other beams in the plurality of beams before transmitting a signal through the channel in the beam direction of the first beam; and scheduling the channel in the beam direction of a target beam in the plurality of beams to the terminal equipment, wherein the target beam is a beam with idle channels in the beam direction in the plurality of beams, and the target beam comprises a first beam.

In other words, the network device performs channel detection on the channel in the beam direction of each beam, and schedules the detected idle channel to the terminal device. In this case, if there is a service requiring a high transmission delay to be transmitted, a channel detection parameter having a high priority, that is, a parameter which is easiest to access a channel, may be used. And after the channel is detected to be idle, the service with higher requirement on transmission delay is preferentially sent.

In this embodiment of the present invention, optionally, the method 100 is executed by a terminal device, as shown in fig. 3, the method 100 further includes:

s140, receiving scheduling information sent by a network device, where the scheduling information is used to instruct the terminal device to transmit a signal through at least one beam of the multiple beams, where the at least one beam includes the first beam.

That is, when the method 100 is performed by a terminal device, the network device schedules when and on what bandwidth the terminal device transmits data (uplink data) on a channel in the beam direction of which beam, and the terminal device performs channel detection on the corresponding beam direction and bandwidth according to the scheduling of the network device. If the terminal device does not detect that the channel is idle before the transmission time scheduled by the network device, the signal is not transmitted, and if the channel is idle before the transmission time scheduled by the network device, the signal is transmitted.

Optionally, as an example, when the terminal device performs channel detection on a channel in a first beam direction of the multiple beams, the terminal device performs channel detection on a channel in a beam direction of at least one beam of the multiple beams according to a principle that a higher requirement of a signal to be transmitted on transmission delay is and a higher detection priority of the channel is. Or, it can be understood that, when the terminal device has a plurality of services to transmit, the channel for transmitting the service with high requirement on transmission delay is preferentially detected.

Optionally, as an example, the terminal device transmits a plurality of signals on the first beam, and in S120, the terminal device transmits the plurality of signals through the channel in the first beam direction according to the principle that the higher the transmission priority of the signal requiring the higher transmission delay is, the higher the transmission priority of the signal is. Or, it can be understood that, if multiple services need to be transmitted on a channel in the beam direction of the same beam, when detecting that the channel is idle, the service with high requirement on transmission delay is preferentially transmitted.

Optionally, as an example, when the terminal device detects that a channel in the beam direction of at least one beam of the multiple beams is busy in a channel detection duration corresponding to the beam direction of the at least one beam of the multiple beams, the terminal device detects channels in the beam directions of other beams of the multiple beams except for the at least one beam; and transmitting signals through the channels in the beam directions of the other beams when the channels in the beam directions of the other beams are detected to be idle. That is to say, if the network device requires that none of the channels for the terminal device to perform channel detection is idle, the terminal device may detect the channels in the beam direction of the other beams, and if the channels in the beam direction of the other beams are idle, the terminal device may also be used for signal transmission. Here, the terminal device may detect the channel in the beam direction of the other beam according to the configuration of the network device, or may autonomously detect the channel in the beam direction of the other beam.

In this embodiment of the present invention, optionally, the method 100 is performed by a terminal device, and the channel detection duration corresponding to the beam direction of each beam is not fixed. In this case, the network device does not configure the uplink transmission time of the terminal device, and the terminal device may always detect the channel in the beam direction of the first beam, and start uplink transmission if it detects that the channel is idle. Or if the terminal device detects that the duration of the channel busy in the beam direction of the first beam is greater than or equal to the preset duration, the terminal device detects channels in other beam directions in the multiple beams, and transmits signals through the channels in the beam directions of the other beams when detecting that the channels in the beam directions of the other beams are idle. That is, if the network device requires that the channel detected by the terminal device is not idle for a long time, the terminal device may detect another channel, and if it detects that another channel is idle, may perform uplink transmission. Here, the detection of the other channels by the terminal device may be performed according to the configuration of the network device or may be performed autonomously.

The method for shared spectrum communication according to the embodiment of the present invention is described in detail above with reference to fig. 1 to 3. An apparatus for shared spectrum communication according to an embodiment of the present invention will be described in detail below with reference to fig. 4. As shown in fig. 4, an apparatus 10 for shared spectrum communication includes:

a processing unit 11, configured to perform channel detection on a channel in a beam direction of a first beam of a plurality of beams, where the beam directions of the plurality of beams are different;

a transceiver 12, configured to transmit a signal through a channel in the beam direction of the first beam when the processing unit detects that the channel in the beam direction of the first beam is idle.

According to the device for shared spectrum communication, channel detection can be performed on a channel in one beam direction of a plurality of beams, so that channel detection can be performed on the basis of the beams, the accuracy of channel detection in each beam direction is ensured, and the spectrum utilization rate and the throughput of a communication system are improved.

Optionally, as an embodiment, there are multiple carriers or multiple bandwidth portions BWP in the beam direction of the first beam;

wherein, the processing unit 11 is specifically configured to:

performing channel detection independently for the multiple carriers or multiple BWPs; or the like, or, alternatively,

and carrying out channel detection on the multiple carriers or the multiple BWPs in a carrier aggregation mode.

Optionally, as an embodiment, the transmittable time of each beam is a preset transmittable time, and the transmittable time of each beam is a time at which a channel in the beam direction of the beam can be used for transmitting a signal, and the processing unit 11 is further configured to:

in terms of performing channel detection on a channel in a beam direction of a first beam of the multiple beams, the processing unit 11 is specifically configured to:

and performing channel detection on the channel in the beam direction of the first beam within the channel detection time corresponding to the beam direction of the first beam.

Optionally, as an embodiment, a channel detection duration corresponding to a beam direction of each beam is a preset value;

and performing channel detection on the channel in the beam direction of the first beam within the channel detection duration corresponding to the beam direction of the first beam.

Optionally, as an embodiment, the processing unit 11 is specifically configured to:

if the channel in the beam direction of the first beam is idle in the first detection granularity, selecting a value N of a random number in a first competition window, and carrying out channel detection by taking the second detection granularity as the detection granularity;

if the channel in the beam direction of the first beam is idle and the value of the random number is not 0, the value of the random number is reduced by 1, and the channel detection is continuously carried out by taking the second detection granularity as the detection granularity;

if the channel in the beam direction of the first beam is busy in the second detection granularity, performing channel detection again by taking the first detection granularity as the detection granularity;

and if the channel in the beam direction of the first beam is detected to be idle again at the first detection granularity and the value of the random number is not 0, subtracting 1 from the value of the random number, and resuming the channel detection with the second detection granularity as the detection granularity.

Optionally, as an embodiment, the processing unit 11 is further configured to:

when the channel detection duration corresponding to the beam direction of the first beam is ended and the channel idleness in the beam direction of the first beam is not detected, determining that the value of the random number is reduced from N to M, and performing channel detection on channels in the beam directions of other beams in the plurality of beams, wherein M is not 0;

when channel detection is performed again on the channel in the beam direction of the first beam, the value of the random number is determined according to one of the following ways: reselecting the value of the random number in the first contention window, reselecting the value of the random number in a second contention window, and determining M as the value of the random number, wherein the second contention window is larger than the first contention window.

Optionally, as an embodiment, the apparatus is disposed in a network device, and before performing channel detection on a channel in a beam direction of the first beam of the multiple beams, the processing unit 11 is further configured to:

and scheduling the channel in the beam direction of the first beam to the terminal equipment.

and performing channel detection on the channel in the beam direction of the first beam according to the principle that the higher the requirement of the signal to be transmitted on the transmission delay and the higher the detection priority of the channel.

and performing channel detection on the channel in the beam direction of the first beam according to a principle that the higher the requirement of the signal to be transmitted on the transmission delay is, the higher the priority of the channel detection parameter used in the channel detection is.

Optionally, as an embodiment, before the transceiver unit transmits the signal through the channel in the beam direction of the first beam, the processing unit 11 is further configured to:

performing channel detection on channels in beam directions of other beams of the plurality of beams;

and scheduling a channel in a beam direction of a target beam in the plurality of beams to a terminal device, where the target beam is a beam in the plurality of beams in which the channel in the beam direction is idle, and the target beam includes the first beam.

Optionally, as an embodiment, the apparatus is disposed on a terminal device, and the transceiver unit 12 is further configured to:

and receiving scheduling information sent by a network device, wherein the scheduling information is used for instructing the terminal device to transmit signals through at least one beam of the plurality of beams, and the at least one beam comprises the first beam.

and performing channel detection on the channel in the beam direction of at least one beam of the multiple beams according to the principle that the higher the requirement of the signal to be transmitted on the transmission delay and the higher the detection priority of the channel.

Optionally, as an embodiment, the transceiver unit 11 transmits a plurality of signals through the first beam;

wherein, in terms of transmitting signals through the channel in the first beam direction, the transceiver unit is specifically configured to:

Optionally, as an embodiment, when it is detected that a channel in a beam direction of at least one beam of the plurality of beams is busy, the processing unit 11 is further configured to:

detecting channels in beam directions of beams other than the at least one beam among the plurality of beams;

and transmitting signals through the channels in the beam directions of the other beams when the channels in the beam directions of the other beams are detected to be idle.

Optionally, as an embodiment, the apparatus is disposed on a terminal device, and the processing unit 12 is further configured to:

detecting channels in the beam directions of other beams in the plurality of beams when it is detected that the duration of channel busy in the beam direction of the first beam is greater than or equal to a preset duration;

the transceiver unit 11 is further configured to: when the processing unit 12 detects that the channel in the beam direction of the other beam is idle, signals are transmitted through the channel in the beam direction of the other beam.

The apparatus according to the embodiment of the present invention may refer to the flow corresponding to the method 100 according to the embodiment of the present invention, and each unit/module and the other operations and/or functions described above in the apparatus are respectively for implementing the corresponding flow in the method 100, and for brevity, no further description is repeated here.

Fig. 5 shows a schematic structural diagram of a network device according to an embodiment of the present invention. As shown in fig. 5, network device 100 includes a processor 110, a transceiver 120, a memory 130, and a bus interface. Wherein:

in this embodiment of the present invention, the network device 100 further includes: a computer program stored in the memory 130 and capable of running on the processor 110, where the computer program, when executed by the processor 110, implements each process that can be executed by a network device in the method 100, and can achieve the same technical effect, and is not described herein again to avoid repetition.

In FIG. 5, the bus architecture may include any number of interconnected buses and bridges, with various circuits of one or more processors, represented in particular by processor 110, and memory, represented by memory 130, being linked together. The bus architecture may also link together various other circuits such as peripherals, voltage regulators, power management circuits, and the like, which are well known in the art, and therefore, will not be described any further herein. The bus interface provides an interface. The transceiver 120 may be a number of elements including a transmitter and a receiver that provide a means for communicating with various other apparatus over a transmission medium.

The processor 110 is responsible for managing the bus architecture and general processing, and the memory 130 may store data used by the processor 110 in performing operations.

Fig. 6 shows a schematic structural diagram of a terminal device according to an embodiment of the present invention, and as shown in fig. 6, the terminal device 200 includes: at least one processor 210, memory 220, at least one network interface 230, and a user interface 240. The various components in the receiving end device 200 are coupled together by a bus system 250. It will be appreciated that the bus system 250 is used to enable communications among the components. The bus system 250 includes a power bus, a control bus, and a status signal bus in addition to a data bus. For clarity of illustration, however, the various buses are labeled as bus system 250 in fig. 6.

The user interface 240 may include, among other things, a display, a keyboard, or a pointing device (e.g., a mouse, trackball, touch pad, or touch screen, among others.

It will be appreciated that memory 220 in embodiments of the invention may be either volatile memory or nonvolatile memory, or may include both volatile and nonvolatile memory. The non-volatile Memory may be a Read-Only Memory (ROM), a Programmable ROM (PROM), an Erasable PROM (EPROM), an Electrically Erasable PROM (EEPROM), or a flash Memory. Volatile Memory can be Random Access Memory (RAM), which acts as external cache Memory. By way of illustration and not limitation, many forms of RAM are available, such as Static random access memory (Static RAM, SRAM), Dynamic Random Access Memory (DRAM), Synchronous Dynamic random access memory (Synchronous DRAM, SDRAM), Double Data Rate Synchronous Dynamic random access memory (ddr Data Rate SDRAM, ddr SDRAM), Enhanced Synchronous SDRAM (ESDRAM), Synchlink DRAM (SLDRAM), and Direct Rambus RAM (DRRAM). The memory 220 of the subject systems and methods described herein is intended to comprise, without being limited to, these and any other suitable types of memory.

In some embodiments, memory 220 stores elements, executable modules or data structures, or a subset thereof, or an expanded set thereof: an operating system 221 and application programs 222.

The operating system 221 includes various system programs, such as a framework layer, a core library layer, a driver layer, and the like, and is used for implementing various basic services and processing hardware-based tasks. The application 222 includes various applications, such as a Media Player (Media Player), a Browser (Browser), and the like, for implementing various application services. A program implementing a method according to an embodiment of the invention may be included in the application 222.

In this embodiment of the present invention, the terminal device 200 further includes: a computer program stored on the memory 220 and capable of running on the processor 210, wherein when being executed by the processor 210, the computer program implements each process that can be executed by the terminal device in the method 100, and can achieve the same technical effect, and is not described herein again to avoid repetition.

The method disclosed in the above embodiments of the present invention may be applied to the processor 210, or implemented by the processor 210. The processor 210 may be an integrated circuit chip having signal processing capabilities. In implementation, the steps of the above method may be performed by integrated logic circuits of hardware or instructions in the form of software in the processor 210. The Processor 210 may be a general purpose Processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), an off-the-shelf Programmable Gate Array (FPGA) or other Programmable logic device, discrete Gate or transistor logic device, or discrete hardware components. The various methods, steps and logic blocks disclosed in the embodiments of the present invention may be implemented or performed. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like. The steps of the method disclosed in connection with the embodiments of the present invention may be directly implemented by a hardware decoding processor, or implemented by a combination of hardware and software modules in the decoding processor. The software modules may reside in ram, flash memory, rom, prom, or eprom, registers, among other computer-readable storage media known in the art. The computer readable storage medium is located in the memory 220, and the processor 210 reads the information in the memory 220 and performs the steps of the above method in combination with the hardware thereof. In particular, the computer-readable storage medium has stored thereon a computer program which, when executed by the processor 210, implements the steps of the method embodiments as in the method 200 described above.

It is to be understood that the embodiments described herein may be implemented in hardware, software, firmware, middleware, microcode, or any combination thereof. For a hardware implementation, the processing units may be implemented within one or more ASICs, DSPs, DSPDs, Programmable Logic Devices (PLDs), FPGAs, general purpose processors, controllers, micro-controllers, microprocessors, other electronic units designed to perform the functions described herein, or a combination thereof.

For a software implementation, the techniques described in this disclosure may be implemented with modules (e.g., procedures, functions, and so on) that perform the functions described in this disclosure. The software codes may be stored in a memory and executed by a processor. The memory may be implemented within the processor or external to the processor.

An embodiment of the present invention further provides a computer-readable storage medium, where a computer program is stored on the computer-readable storage medium, and when the computer program is executed by a processor, the computer program implements each process of the method 100, and can achieve the same technical effect, and in order to avoid repetition, details are not repeated here. The computer-readable storage medium may be a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk.

Embodiments of the present invention also provide a computer program product including instructions, and when a computer executes the instructions of the computer program product, the computer executes the method for shared spectrum communication of the above method embodiments. In particular, the computer program product may be run on the network device and the terminal device described above.

Those of ordinary skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present invention.

It is clear to those skilled in the art that, for convenience and brevity of description, the specific working processes of the above-described systems, apparatuses and units may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.

In the embodiments provided in the present invention, it should be understood that the disclosed system, apparatus and method may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units is only one logical division, and other divisions may be realized in practice, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.

The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.

In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit.

The functions, if implemented in the form of software functional units and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: 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), a magnetic disk, or an optical disk.

The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. A method for shared spectrum communications, comprising:

performing channel detection on a channel in a beam direction of a first beam of a plurality of beams, the beam directions of the plurality of beams being different;

when detecting that a channel in the beam direction of the first beam is idle, scheduling the idle channel in the beam direction of the first beam to a terminal device, and transmitting a signal through the channel in the beam direction of the first beam;

the transmittable time of each beam is a preset transmittable time, and the transmittable time of each beam is a time at which a channel in the beam direction of the beam can be used for transmitting a signal, the method further comprising:

wherein the performing channel detection on a channel in a beam direction of a first beam of the plurality of beams comprises:

2. Method according to claim 1, characterized in that there are multiple carriers or multiple bandwidth parts BWP in the beam direction of the first beam;

3. The method according to claim 1 or 2, wherein the channel detection duration corresponding to the beam direction of each beam is a preset value;

4. The method according to claim 3, wherein the performing channel detection on the channel in the beam direction of the first beam in the channel detection duration corresponding to the beam direction of the first beam comprises:

5. The method of claim 4, further comprising:

when channel detection is performed again on the channel in the beam direction of the first beam, the value of the random number is determined according to one of the following ways: reselecting a value of a random number within the first contention window, reselecting a value of a random number within a second contention window, and determining M as the value of the random number, wherein the second contention window is larger than the first contention window.

6. The method of claim 1, 4 or 5, wherein the method is performed by a network device, and wherein prior to performing channel detection on a channel in a beam direction of the first beam of the plurality of beams, the method further comprises:

7. The method of claim 6, wherein the performing channel detection on the channel in the beam direction of the first beam of the plurality of beams comprises:

8. The method of claim 6, wherein the performing channel detection on the channel in the beam direction of the first beam comprises:

9. The method according to claim 1 or 4 or 5, wherein before said transmitting signals through the channel in the beam direction of the first beam upon detecting that the channel in the beam direction of the first beam is idle, the method further comprises:

10. The method according to claim 4 or 5, wherein the method is performed by a terminal device, the method further comprising:

11. The method of claim 10, wherein the performing channel detection on the channel in the first beam direction of the plurality of beams comprises:

12. The method of claim 10, wherein the terminal device transmits a plurality of signals via the first beam;

and transmitting the plurality of signals through the channel in the first beam direction according to the principle that the higher the transmission time delay requirement is, the higher the transmission priority of the signals is.

13. The method of claim 12, wherein upon detecting that a channel in a beam direction of at least one of the plurality of beams is busy, the method further comprises:

14. The method of claim 1, wherein the method is performed by a terminal device, and wherein the method further comprises:

and when detecting that the channels in the beam directions of other beams are idle, transmitting signals through the channels in the beam directions of the other beams.

15. An apparatus for shared spectrum communications, comprising:

a processing unit, configured to perform channel detection on a channel in a beam direction of a first beam of a plurality of beams, where the beam directions of the plurality of beams are different;

a transceiver unit, configured to schedule, when the processing unit detects that a channel in a beam direction of the first beam is idle, the idle channel in the beam direction of the first beam to a terminal device, and transmit a signal through the channel in the beam direction of the first beam;

the transmittable time of each beam is a preset transmittable time, the transmittable time of each beam is a time at which a channel in the beam direction of the beam can be used for transmitting signals, and the processing unit is further configured to:

wherein, in terms of performing channel detection on a channel in a beam direction of a first beam of the multiple beams, the processing unit is specifically configured to:

16. The apparatus according to claim 15, wherein there are multiple carriers or multiple bandwidth parts BWP in the beam direction of the first beam;

wherein the processing unit is specifically configured to:

17. The apparatus according to claim 15 or 16, wherein the channel detection duration corresponding to the beam direction of each beam is a preset value;

18. The apparatus according to claim 17, wherein the processing unit is specifically configured to:

19. The apparatus of claim 18, wherein the processing unit is further configured to:

20. The apparatus according to claim 15, 18 or 19, wherein the apparatus is arranged in a network device, and wherein before performing channel detection on the channel in the beam direction of the first beam of the plurality of beams, the processing unit is further configured to:

21. The apparatus according to claim 20, wherein the processing unit is specifically configured to:

22. The apparatus according to claim 20, wherein the processing unit is specifically configured to:

23. The apparatus according to claim 15 or 18 or 19, wherein before the transceiving unit transmits signals through the channel in the beam direction of the first beam, the processing unit is further configured to:

24. The apparatus according to claim 18 or 19, wherein the apparatus is disposed on a terminal device, and the transceiver unit is further configured to:

25. The apparatus according to claim 24, wherein the processing unit is specifically configured to:

26. The apparatus of claim 24, wherein the transceiver unit transmits a plurality of signals via the first beam;

27. The apparatus of claim 24, wherein upon detecting that a channel in a beam direction of at least one of the plurality of beams is busy, the processing unit is further configured to:

28. The apparatus according to claim 15, wherein the apparatus is disposed on a terminal device, and wherein the processing unit is further configured to:

the transceiver unit is further configured to: and when the processing unit detects that the channels in the beam directions of other beams are idle, transmitting signals through the channels in the beam directions of the other beams.