CN115699849A

CN115699849A - Wireless communication method and apparatus

Info

Publication number: CN115699849A
Application number: CN202080102098.5A
Authority: CN
Inventors: 邢金强
Original assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Current assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Priority date: 2020-08-07
Filing date: 2020-08-07
Publication date: 2023-02-03
Anticipated expiration: 2040-08-07
Also published as: WO2022027681A1; CN115699849B

Abstract

A wireless communication method and apparatus are provided, the method comprising: determining whether a first beam is an available beam based on a strength of a signal on the first beam, the first beam being a beam on an unlicensed spectrum. Whether the first beam is an available beam or not can be determined based on the strength of the signal on the first beam, and channel access can be performed based on the first beam when the first beam is the available beam, which is equivalent to that an unlicensed spectrum where the first beam is located can simultaneously support access of a plurality of terminal devices, so that not only can wireless communication be performed on the unlicensed spectrum, but also the use efficiency of the unlicensed spectrum can be improved.

Description

Wireless communication method and apparatus

Technical Field

The embodiments of the present application relate to the field of communications, and more particularly, to a wireless communication method and apparatus.

Background

The access mode of the low-frequency-band unlicensed spectrum is to monitor the wireless signal energy of a target spectrum through a terminal antenna to judge whether other terminals occupy the low-frequency-band unlicensed spectrum. For example, a low-band terminal performs signal transmission to a space in a spherical radiation manner on an occupied unlicensed spectrum, that is, if a certain terminal occupies the unlicensed spectrum, other terminals receive a signal transmitted by the certain terminal in any direction of the certain terminal, so that the other terminals cannot access the unlicensed spectrum.

However, considering that the way in which the terminal transmits signals on the high-band unlicensed spectrum is different from the way in which the terminal transmits signals on the low-band unlicensed spectrum, the access method of the low-band unlicensed spectrum is not suitable for the low-band unlicensed spectrum.

Therefore, there is a need in the art for an access method for unlicensed spectrum in high frequency band.

Disclosure of Invention

Provided are a wireless communication method and device, which not only can realize wireless communication on an unlicensed spectrum, but also can improve the use efficiency of the unlicensed spectrum.

In a first aspect, a wireless communication method is provided, including:

determining whether a first beam is an available beam based on a strength of a signal on the first beam, the first beam being a beam on an unlicensed spectrum.

In a second aspect, a wireless communication method is provided, including:

a broadcast signal is received indicating a first length of time occupied on an unlicensed spectrum.

In a third aspect, a wireless communication method is provided, including:

transmitting a broadcast signal indicating a first length of time occupied on an unlicensed spectrum.

In a fourth aspect, a terminal device is provided, configured to perform the method in the first aspect or its implementation manners. Specifically, the terminal device includes a functional module configured to execute the method in the first aspect or each implementation manner thereof.

In a fifth aspect, a terminal device is provided, configured to execute the method in the second aspect or each implementation manner thereof. Specifically, the terminal device includes a functional module for executing the method in the second aspect or each implementation manner thereof.

In a sixth aspect, a terminal device is provided, configured to perform the method in the third aspect or each implementation manner thereof. Specifically, the terminal device includes a functional module for executing the method in the third aspect or each implementation manner thereof.

In a seventh aspect, a terminal device is provided that includes a processor and a memory. The memory is configured to store a computer program, and the processor is configured to call and execute the computer program stored in the memory to perform the method in the first aspect or each implementation manner thereof.

In an eighth aspect, a terminal device is provided that includes a processor and a memory. The memory is used for storing a computer program, and the processor is used for calling and running the computer program stored in the memory to execute the method of the second aspect or each implementation manner thereof.

In a ninth aspect, a terminal device is provided that includes a processor and a memory. The memory is configured to store a computer program, and the processor is configured to call and execute the computer program stored in the memory to perform the method in the third aspect or each implementation manner thereof.

A tenth aspect provides a chip for implementing the method of any one of the first to third aspects or implementations thereof. Specifically, the chip includes: a processor configured to call and run a computer program from a memory, so that the device on which the chip is installed performs the method according to any one of the first to third aspects or the implementation manners thereof.

In an eleventh aspect, a computer-readable storage medium is provided for storing a computer program, the computer program causing a computer to perform the method of any one of the first to third aspects or implementations thereof.

In a twelfth aspect, there is provided a computer program product comprising computer program instructions for causing a computer to perform the method of any one of the first to third aspects or implementations thereof.

In a thirteenth aspect, there is provided a computer program which, when run on a computer, causes the computer to perform the method of any one of the above first to third aspects or implementations thereof.

Based on the above technical solution, based on the strength of the signal on the first beam, it may be determined whether the first beam is an available beam, and when the first beam is an available beam, the channel access may be performed based on the first beam, which is equivalent to that the unlicensed spectrum where the first beam is located may simultaneously support the access of multiple terminal devices, so that not only wireless communication on the unlicensed spectrum may be achieved, but also the usage efficiency of the unlicensed spectrum may be improved.

Drawings

Fig. 1 is an example of a scenario in which an embodiment of the present application is applicable.

Fig. 2 is a schematic diagram of a receive beam of a terminal device according to an embodiment of the present application.

Fig. 3 is a schematic flow chart of a wireless communication method provided by an embodiment of the present application.

Fig. 4 and fig. 5 are schematic diagrams of a first beam provided in an embodiment of the present application.

Fig. 6 is a schematic flow chart of another wireless communication method provided by an embodiment of the present application.

Fig. 7 to 11 are schematic structural diagrams of broadcast signals of an embodiment of the present application.

Fig. 12 and fig. 13 are schematic block diagrams of a terminal device provided in an embodiment of the present application.

Fig. 14 is a schematic block diagram of a communication device provided in an embodiment of the present application.

Fig. 15 is a schematic block diagram of a chip provided in an embodiment of the present application.

Detailed Description

Technical solutions in the embodiments of the present application will be described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but 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 application.

Fig. 1 is a schematic diagram of an application scenario of an embodiment of the present application.

As shown in fig. 1, communication system 100 may include a terminal device 110 and a network device 120. Network device 120 may communicate with terminal device 110 over the air. Multi-service transport is supported between terminal device 110 and network device 120.

It should be understood that the embodiment of the present application is only illustrated as the communication system 100, but the embodiment of the present application is not limited thereto. That is to say, the technical solution of the embodiment of the present application can be applied to various communication systems, for example: a Long Term Evolution (LTE) System, an LTE Time Division Duplex (TDD) System, a Universal Mobile Telecommunications System (UMTS), a 5G communication System (also referred to as a New Radio (NR) communication System), or a future communication System.

In communication system 100 shown in fig. 1, network device 120 may be an access network device that communicates with terminal device 110. An access network device may provide communication coverage for a particular geographic area and may communicate with terminal devices 110 (e.g., UEs) located within the coverage area.

The Network device 120 may be an evolved Node B (eNB or eNodeB) in a Long Term Evolution (LTE) system, or a Next Generation Radio Access Network (NG RAN) device, or a base station (gNB) in an NR system, or a wireless controller in a Cloud Radio Access Network (CRAN), or the Network device 120 may be a relay station, an Access point, a vehicle-mounted device, a wearable device, a hub, a switch, a bridge, a router, or a Network device in a Public Land Mobile Network (PLMN) for future Evolution, or the like.

Terminal device 110 may be any terminal device including, but not limited to, terminal devices that employ wired or wireless connections with network device 120 or other terminal devices.

For example, the terminal device 110 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 (SIP) phone, a Wireless Local Loop (WLL) station, a Personal Digital Assistant (PDA), a handheld device having Wireless communication capabilities, a computing device or other processing device connected to a Wireless modem, a vehicle mounted device, a wearable device, a terminal device in a 5G network, or a terminal device in a future evolution network, etc.

The terminal Device 110 may be used for Device-to-Device (D2D) communication.

The wireless communication system 100 may further include a core network device 130 in communication with the base station, and the core network device 130 may be a 5G core network (5G core,5 gc) device, such as an Access and Mobility Management Function (AMF), an Authentication Server Function (AUSF), a User Plane Function (User uplink Function, SMF), and a Session Management Function (SMF). Alternatively, the Core network device 130 may also be an Evolved Packet Core (EPC) device of the LTE network, for example, a Session Management Function + Core Packet Gateway (SMF + PGW-C) device of the Core network. It is understood that SMF + PGW-C may perform the functions that SMF and PGW-C can perform simultaneously. In the network evolution process, the core network device may also be called by other names, or a new network entity is formed by dividing the functions of the core network, which is not limited in this embodiment of the present application.

The functional units in the communication system 100 may also establish a connection through a next generation Network (NG) interface to implement communication.

For example, the terminal device establishes an air interface connection with the access network device through the NR interface, and is used to transmit user plane data and control plane signaling; the terminal equipment can establish control plane signaling connection with the AMF through an NG interface 1 (N1 for short); an access network device, such as a next generation radio access base station (gNB), may establish a user plane data connection with a UPF through an NG interface 3 (N3 for short); the access network equipment can establish control plane signaling connection with the AMF through an NG interface 2 (N2 for short); UPF can establish control plane signaling connection with SMF through NG interface 4 (N4 for short); the UPF can interact user plane data with a data network through an NG interface 6 (N6 for short); AMF can establish control plane signaling connection with SMF through NG interface 11 (N11 for short); the SMF may establish a control plane signaling connection with the PCF via NG interface 7 (N7 for short).

Fig. 1 exemplarily shows one base station, one core network device, and two terminal devices, and optionally, the wireless communication system 100 may include a plurality of base station devices and may include other numbers of terminal devices within the coverage area of each base station, which is not limited in this embodiment of the present application.

It should be understood that, in the embodiments of the present application, all devices having a communication function in a network/system may be referred to as communication devices. Taking the communication system 100 shown in fig. 1 as an example, the communication device may include a network device 120 and a terminal device 110 having a communication function, and the network device 120 and the terminal device 110 may be the devices described above and are not described herein again; the communication device may also include other devices in the communication system 100, such as other network entities, for example, a network controller, a mobility management entity, and the like, which is not limited in this embodiment.

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

It should be noted that the terminal device mentioned above may use a carrier of an unlicensed spectrum or a carrier of a licensed spectrum for data transmission. Wherein unlicensed spectrum may also be referred to as unlicensed spectrum.

Unlicensed spectrum and licensed spectrum are described below.

Wireless communication is established on the basis of frequency spectrums, and the frequency spectrums are generally divided into two categories, namely authorized frequency spectrums and unauthorized frequency spectrums, wherein the authorized frequency spectrums are widely used in application scenes such as mobile communication, satellite communication, radar detection and the like, and the use of the authorized frequency spectrums can be used only by being authorized by a regulatory department; the unlicensed spectrum is another usage mode, that is, the spectrum can be used without authorization of a regulatory department on the unlicensed spectrum, for example, WIFI, bluetooth and the like which are generally used work on the unlicensed spectrum.

For example, the unlicensed spectrum includes a spectrum with a relatively low frequency, such as 2.4GHz, and the like, and also includes a millimeter wave spectrum with a frequency up to several tens of GHz. Moreover, with the popularization and application of radio terminals such as unmanned aerial vehicles, the usage of unlicensed spectrum in low frequency band becomes very congested, resulting in low efficiency, and therefore more and more unlicensed services and applications start migrating to high frequency bands such as millimeter waves.

For the unlicensed spectrum, all the users can use the unlicensed spectrum, and if the users do not control the unlicensed spectrum, the users simultaneously occupy the same spectrum resource to transmit, so that the users can interfere with each other, and even cannot be received by a receiving end. Therefore, the unlicensed frequency band may be used according to a "first come first serve" principle, that is, the terminal device needs to monitor whether there is another terminal device on the frequency spectrum planned to be used before transmitting the signal (that is, the frequency spectrum planned to be used is occupied), and if there is another terminal device, the terminal device cannot access the frequency spectrum, that is, the terminal device needs to search for another target frequency spectrum, and only when there is no other terminal device transmitting the signal, the terminal device can occupy the target frequency spectrum.

In other words, before signal transmission is performed on a channel of an unlicensed spectrum, a terminal device needs to perform channel interception first, and only when a channel interception result is that the channel is idle, the terminal device can perform signal transmission; if the channel sensing result of the terminal device on the channel of the unlicensed spectrum is that the channel is busy, the terminal device cannot transmit signals.

As described above, more and more services are beginning to migrate to millimeter wave high frequency bands.

For the millimeter wave spectrum, the spatial propagation loss is large due to the high frequency. Therefore, as shown in fig. 2, the terminal device generally uses a narrow transmission beam to concentrate energy to a direction facing the receiving end for transmission, so as to reduce propagation loss. This is different from the low-frequency band, which is the transmission of signals by energy radiation to the whole spherical space. Therefore, the communication mode has remarkable characteristics with the low frequency band.

The access mode of the low-frequency-band unlicensed spectrum is to monitor the wireless signal energy of a target spectrum through an antenna of the terminal equipment to judge whether other terminal equipment occupies the low-frequency-band unlicensed spectrum. For example, a low-band terminal transmits a signal to a space in a spherical radiation manner on an occupied unlicensed spectrum, that is, if a certain terminal occupies the unlicensed spectrum, other terminal devices receive the signal transmitted by the certain terminal device in any direction of the certain terminal device, so that the other terminal devices cannot access the unlicensed spectrum.

However, considering that the terminal transmits signals on the unlicensed spectrum in the high frequency band in a manner different from that of the terminal transmitting signals on the unlicensed spectrum in the low frequency band, the access manner of the unlicensed spectrum in the low frequency band is not suitable for the unlicensed spectrum in the low frequency band.

The embodiment of the application provides an access mode suitable for a high-frequency-band unlicensed spectrum.

Fig. 3 is a schematic flow chart of a wireless communication method 200 provided by an embodiment of the present application. The method 200 may be performed by a terminal device. For example a terminal device as shown in fig. 1.

As shown in fig. 3, the method 200 may include:

s210, determining whether a first beam is an available beam or not based on the strength of a signal on the first beam, wherein the first beam is a beam on an unlicensed spectrum.

For example, if the first beam is an available beam, it indicates that the terminal device may access the channel based on the first beam on the unlicensed spectrum; and if the first beam is not the available beam, indicating that the terminal equipment can not access the channel based on the first beam.

Wherein the signal on the first beam may be a signal transmitted by other terminals on the unlicensed spectrum and received by the first beam. The signal on the first beam may also be referred to as a received signal on the first beam or an interference signal on the first beam. The signal on the first beam may cause interference to signals transmitted by the terminal device on the first beam. For convenience of description, the terminal device will be referred to as a second terminal, and the other terminal device will be referred to as a first terminal.

Based on the strength of the signal on the first beam, the second terminal may determine whether the first beam is an available beam, and if the first beam is an available beam, the second terminal may perform channel access based on the first beam, which is equivalent to that an unlicensed spectrum where the first beam is located may simultaneously support access of multiple terminal devices, thereby not only enabling wireless communication on the unlicensed spectrum, but also improving the usage efficiency of the unlicensed spectrum.

In some embodiments of the present application, the first beam is a beam in a first direction on the unlicensed spectrum.

For example, the first beam may be a beam in either direction in the unlicensed spectrum, such as the beams shown in fig. 2.

In some embodiments of the present application, the S210 may include:

determining that the first beam is not an available beam if the strength of the signal on the first beam is greater than a first threshold for a first duration; and/or

Determining that the first beam is not an available beam if the average strength of the signal on the first beam is greater than the first threshold for the first duration; and/or

Determining that the first beam is an available beam if the strength of the signal on the first beam is less than or equal to a second threshold for a second duration; the second threshold is less than or equal to the first threshold; and/or

Determining that the first beam is an available beam if the average strength of the signal on the first beam is less than or equal to a second threshold for the second duration; and/or

If the intensity of the signal on the first beam is less than or equal to a third threshold value within a third duration, determining the first beam as a high-quality alternative beam in the available beams; the third threshold is less than or equal to the second threshold; and/or

And if the average intensity of the signals on the first beam in the third duration is less than or equal to a third threshold, determining that the first beam is a good-quality alternative beam in the available beams.

In other words, it may be determined whether the first beam is an available beam through at least one of the first threshold, the second threshold, and the third threshold.

It should be noted that the first threshold, the second threshold, and the third threshold may be equal, that is, the first threshold, the second threshold, and the third threshold may be the same threshold. If the strength of the signal on the first beam is greater than the same threshold, it indicates that there is a first terminal occupying the first beam on the unlicensed frequency, and at this time, if a second terminal operates on the first beam, that is, if a message is sent through the first beam, there is interference between the second terminal and the first terminal, which affects communication quality; in other words, the second terminal needs to avoid accessing the channel based on the first beam. On the contrary, if the strength of the signal on the first beam is less than or equal to the same threshold, it indicates that there is no first terminal occupying the first beam on the unlicensed spectrum, and at this time, the second terminal may send information through the first beam, that is, the second terminal may access the channel based on the first beam.

In addition, the first duration, the second duration, and the third duration may be the same or different. The first duration, the second duration, or the third duration may be non-negative. Such as a non-negative integer.

Of course, the first threshold, the second threshold, the third threshold, the first duration, the second duration, or the third duration may be preset, configured, or a value implemented based on the second terminal. The preset can be defined or specified by a standard; the configuration may be of other devices, e.g., an access network device or other terminal device; the configuration may include a static configuration, a semi-static configuration, a dynamic configuration, and the like.

In some embodiments of the present application, the method 200 may further comprise:

the available beams on the unlicensed spectrum are ordered based on the strength of the signals on the beams.

For example, the second terminal may determine that the available beams on the unlicensed spectrum include a plurality of beams, and the second terminal may rank the plurality of beams in order of high-to-low or low-to-high signal strength.

For another example, if the first threshold, the second threshold, and the third threshold are equal, and the second terminal determines that the available beams on the unlicensed spectrum include multiple beams, the second terminal may rank the multiple beams in order from high to low or from low to high in signal strength.

Fig. 4 is a schematic structural diagram of a first beam provided in an embodiment of the present application.

As shown in fig. 4, the second terminal may include beam a, beam B, and beam C on the unlicensed spectrum.

In the process of determining the available beam, the second terminal may first use a receiving beam (assumed as an a beam) for signal detection, at which time the second terminal will receive the transmission signal from the first terminal, and the signal strength duration T1 (T1 ≧ 0) is higher than a certain threshold X. The second terminal now considers the current channel to be occupied and will interfere with the first terminal if transmitting with the a-beam and will experience interference from the first terminal if receiving with the a-beam. Beam a is therefore unavailable.

Therefore, the second terminal may switch to another beam in the other direction (assumed to be a B beam) for further signal detection, and at this time, the second terminal may still receive the signal sent by the first terminal, and it is assumed that the strength of the signal received by the second terminal on the beam B is continuously T2 (T2 ≧ 0) lower than the threshold Y (Y ≦ X). At this time, the second terminal determines beam B as an available alternative beam.

The spectrum occupation detection method based on the beam is different from a detection mechanism of spectrum occupation of a second terminal in whole space radiation, and specifically, the fact that the beam of the second terminal detects spectrum occupation in a certain direction does not mean that interference with a first terminal occupying the spectrum is generated in other directions. Therefore, by adjusting the beam direction, the interference between the terminals can be avoided. Therefore, the utilization rate of the unlicensed spectrum and the throughput of the whole system are improved.

Certainly, the second terminal may also change a beam in another direction (assumed to be a C beam) to detect a signal, where the strength of the signal sent by the first terminal is very weak, that is, the strength of the signal received by the second terminal on the beam C is continuously T3 (T3 ≧ 0) and is lower than the threshold Z (Z ≦ Y), and the second terminal may determine that the beam C is a good-quality alternative beam.

It should be noted that the threshold Y and the threshold Z may not be distinguished, that is, there is only one threshold, at this time, the "high-quality alternative beam" may be actually classified as an "available alternative beam", and the interference situations of the beams are sorted by the strength of the transmission signal of the first terminal received by the beam of the second terminal. And the second terminal obtains a group of alternative beams after completing the detection of the target spectrum, and the second terminal can further determine the subsequently used beams, namely the beams for transmitting in the directions.

In some embodiments of the present application, the beams on the unlicensed spectrum comprise at least one beam group, a first beam group of the at least one beam group, the first beam group comprising the first beam. Optionally, the first beam may be a beam located at a middle position in the first beam group. Alternatively, the first beam may be a specific beam of the first beams.

For example, whether the first beam is an available beam may be determined in the following manner.

Determining that none of the beams in the first beam group are usable beams if the strength of the signal on the first beam is greater than a fourth threshold for a fourth duration; and/or

Determining that none of the beams in the first beam group are usable beams if the average strength of the signal on the first beam is greater than the fourth threshold for the fourth duration; and/or

Determining that the first beam is an available beam if the strength of the signal on the first beam is less than or equal to a fifth threshold for a fifth duration; whether other beams within the first beam group are available beams is determined based on the strength of signals on the other beams, the fifth threshold being less than or equal to the fourth threshold; and/or

Determining that the first beam is a usable beam if the average intensity of the signal on the first beam over the fifth duration is less than or equal to a fifth threshold; and/or

Determining that the beams in the first beam group are all available beams if the strength of the signal on the first beam is greater than a sixth threshold for a sixth duration; the sixth threshold is less than or equal to the fifth threshold; and/or

Determining that all beams in the first beam group are usable beams if the average intensity of the signal on the first beam is less than or equal to a sixth threshold for the sixth duration.

The beam grouping can accelerate interference detection in the case of multiple subdivided beams of the second terminal, thereby reducing the time consumption for interference detection or for determining available beams compared to beam-by-beam detection.

In other words, whether the fourth beam is an available beam may be determined by at least one of the fourth threshold, the fifth threshold, and the sixth threshold.

It should be noted that the fourth threshold, the fifth threshold, and the sixth threshold may be equal, that is, the fourth threshold, the fifth threshold, and the sixth threshold may be the same threshold. If the strength of the signal on the fourth beam is greater than the same threshold, it indicates that a fourth terminal occupying the fourth beam on the unlicensed frequency exists, and at this time, if a fifth terminal operates on the fourth beam, that is, if a message is sent through the fourth beam, interference may exist between the fifth terminal and the fourth terminal, which affects communication quality; in other words, the fifth terminal needs to avoid accessing the channel based on the fourth beam. On the contrary, if the strength of the signal on the fourth beam is less than or equal to the same threshold, it indicates that there is no fourth terminal occupying the fourth beam on the unlicensed spectrum, and at this time, the fifth terminal may send information through the fourth beam, that is, the fifth terminal may access a channel based on the fourth beam.

In addition, the fourth duration, the fifth duration, and the sixth duration may be the same or different. The fourth duration, the fifth duration, or the sixth duration may be non-negative. Such as a non-negative integer.

Of course, the fourth threshold, the fifth threshold, the sixth threshold, the fourth duration, the fifth duration, or the sixth duration may be preset, configured, or a value realized based on the fifth terminal. The preset can be defined or specified by a standard; the configuration may be of other devices, e.g., an access network device or other terminal device; the configuration may include a static configuration, a semi-static configuration, a dynamic configuration, and the like.

Fig. 5 is a schematic structural diagram of a first beam provided in an embodiment of the present application.

As shown in fig. 5, the second terminal may include three beam groups in the unlicensed spectrum, namely, a { A1, A2, A3} beam group, a { B1, B2, B3} beam group, and a { C1, C2, C3} beam group.

In the process of determining the available beams, the second terminal selects each combined intermediate beam as an initial beam for interference detection, and selects A1 for interference detection of the initial beam, taking the { A1, A2, A3} beam group as an example. For example, when the strength of the signal detected by the second terminal is higher than the above-mentioned threshold value X for a certain time T1, the terminal device stops the interference detection of the other beams (A2 and A3) in the beam group. As another example, when the strength of the signal detected by the second terminal is lower than the above-mentioned threshold Y for a certain time T2, the second terminal may further perform interference detection based on the other beams (A2 and A3) in the combination. As another example, when the strength of the signal detected by the second terminal is lower than the above-mentioned threshold Z for a certain time T3, the second terminal may directly identify the other beams (A2 and A3) in the combination as available alternative beams.

By analogy, the second terminal may further continue to perform interference detection on the { B1, B2, B3} beam group and the { C1, C2, C3} beam group.

In some embodiments of the present application, the sixth threshold is equal to the fifth threshold; the method 200 may further include:

determining a determination manner for determining whether the other beam is an available beam.

For example, if the threshold Y and the threshold Z are the same threshold, the second terminal determines a determination method for determining whether or not a beam other than the first beam in the beam group is an available beam.

determining a transmit beam for transmitting data among the available beams on the unlicensed spectrum.

For example, the second terminal determines a beam having the smallest signal intensity among the determined plurality of available beams as a beam for transmitting data.

periodically detecting the strength of the signal on the transmit beam; or

Periodically detecting a strength of a signal on each available beam on the unlicensed spectrum.

adjusting a beam used for transmitting data if the strength of the signal on the transmit beam is less than or equal to a seventh threshold for a seventh duration.

For example, the second terminal transmits data on the transmit beam and periodically detects the strength of the signal on the or each available beam. I.e. possible potential interference is monitored to avoid possible interference. For this reason, the strength of the signal on the transmission beam may also change due to the second terminal moving or the second terminal changing its beam orientation.

In other words, the second terminal monitors the unlicensed spectrum and the strength of the signal transmitted from other terminal devices on the transmission beam at regular intervals, and when the detected strength of the signal is higher than a certain threshold H, the interference between the second terminal and the other terminal devices will affect the communication quality, that is, the second terminal needs to adjust the working beam. For example, the second terminal performs interference detection and selects an available alternative beam for subsequent signal transmission and reception.

Fig. 6 shows a schematic flow chart of a wireless communication method 300 according to an embodiment of the application. Fig. 7 to 11 are schematic structural diagrams of a broadcast signal provided by the present application. The method 300 may be performed by a terminal device. For example a terminal device as shown in fig. 1. The method 300 is described below in conjunction with fig. 7-11.

As shown in fig. 6, the method 300 may include:

s310, a first terminal sends a broadcast signal to a second terminal, where the broadcast signal is used to indicate a first time length occupied on an unlicensed spectrum.

As shown in fig. 7, the time length indicated by the broadcast signal may include a time length L1 occupied by the first terminal.

Through the broadcast signal, the time length of the preset occupation of other terminals on the unauthorized spectrum is determined, so that the blind spectrum occupation condition detection of the second terminal can be avoided, and the use of the unordered unauthorized spectrum can be more transparent and predictable. In other words, the broadcast signal can enhance the information communication between the terminal devices, and can avoid the problems of frequent occurrence of interference due to lack of information communication and excessive cost of beam selection and communication. In addition, the use efficiency of the unlicensed spectrum can be improved.

In some embodiments of the present application, the broadcast signal is used to indicate at least one time length respectively occupied by at least one terminal device on the unlicensed spectrum; and/or, the broadcast signal is used for indicating an occupation sequence of the at least one terminal device on the unlicensed spectrum; and/or the broadcast signal is used for indicating the starting time of the time respectively occupied by the at least one terminal device on the unlicensed spectrum.

In some embodiments of the present application, the method 300 may further comprise:

the second terminal determines a second time length expected to be occupied on the unlicensed spectrum based on the first time length; and the second terminal sends request information, and the request information is used for requesting to occupy the second time length on the unlicensed spectrum. Optionally, the second time length is after the first time length.

In short, the second terminal determines a time length L2 expected to be occupied on the unlicensed spectrum, and indicates the time length L2 to the first terminal in a broadcast manner.

In other words, the first terminal may add the second time length to the time length indicated by the broadcast signal after receiving the request message.

For example, as shown in fig. 8, the first terminal may add a time length L2 that the second terminal desires to occupy on the unlicensed spectrum to a time length L1 that the first terminal desires to occupy on the unlicensed spectrum. In other words, after the second terminal detects the spectrum occupancy based on the beam, it finds that the unlicensed spectrum expected to be occupied is already occupied by the first terminal and the occupied time length is L1. The second terminal informs the first terminal of the time length L2 expected to be occupied by the second terminal, and the first terminal informs other terminals of the time length L2 expected to be occupied by the second terminal in a broadcasting mode.

For another example, as shown in fig. 9, the third terminal detects that the first terminal is occupying the unlicensed spectrum, the third terminal simultaneously reads the occupied time length L1 of the first terminal and the occupied time length L2 of the second terminal, and if the third terminal still wants to be able to occupy the unlicensed spectrum in the beam direction after the above time, the third terminal also notifies the first terminal of the expected occupied time length L3. The first terminal adds the length of time L3 of the third terminal to the broadcast message. The length of time L3 may be superimposed after the length of time L2 occupied by the second terminal. Similarly, the time length L4 that the fourth terminal expects to occupy on the unlicensed spectrum may also be added to the time length L3.

In some embodiments of the present application, the second terminal periodically transmits the request message.

In other words, the first terminal receives the request message periodically.

By periodically sending the request message, the second terminal can know the current and subsequent spectrum occupation conditions in real time, so that the use of the unordered unlicensed spectrum becomes more transparent and predictable.

and if the request message is failed to be received periodically, canceling the second time length in the time length indicated by the broadcast signal.

For example, the request message of the second terminal needs to periodically inform the first terminal occupying the spectrum at the moment after a certain time interval. If the first terminal does not receive the updated request message, the expected duration L2 requested by the previously received request message is cancelled, i.e. the duration L2 is no longer included in the duration indicated by the broadcast signal. Therefore, after the second terminal selects other beams for communication after a certain time, the expected occupied time length L2 of the continuous request can be avoided, and the waste of time resources is avoided.

In some embodiments of the present application, the first terminal may replace the second length of time within the length of time indicated by the broadcast signal with a third length of time.

For example, as shown in fig. 10, the time length L2 is replaced by a time length L5 that the fifth terminal desires to occupy on the unlicensed spectrum.

In some embodiments of the present application, the first terminal may move forward and move the start of the time length after the second time length within the time length indicated by the broadcast signal by the second time length.

For example, as shown in fig. 11, the entire time length L3 and the time length L4 are moved forward and the time length of the movement is L2.

It should be noted that when the first terminal no longer occupies the spectrum, the following terminal device, such as the second terminal, occupies the spectrum at its predetermined time point and performs communication. At this time, the second terminal, as a terminal currently occupying the unlicensed spectrum, may broadcast an occupation time length predetermined by subsequent other terminal devices (e.g., a third terminal, a fourth terminal, a fifth terminal, and the like).

The preferred embodiments of the present application have been described in detail with reference to the accompanying drawings, however, the present application is not limited to the details of the above embodiments, and various simple modifications can be made to the technical solution of the present application within the technical idea of the present application, and these simple modifications are all within the protection scope of the present application. For example, the various features described in the foregoing detailed description may be combined in any suitable manner without contradiction, and various combinations that may be possible are not described in this application in order to avoid unnecessary repetition. For example, various embodiments of the present application may be arbitrarily combined with each other, and the same should be considered as the disclosure of the present application as long as the concept of the present application is not violated.

It should also be understood that, in the various method embodiments of the present application, the sequence numbers of the above-mentioned processes do not imply an execution sequence, and the execution sequence of the processes should be determined by their functions and inherent logic, and should not constitute any limitation to the implementation process of the embodiments of the present application. In addition, in the embodiment of the present application, the terms "downlink" and "uplink" are used to indicate the transmission direction of signals or data, where "downlink" is used to indicate that the transmission direction of signals or data is a first direction transmitted from a station to a user equipment of a cell, and "uplink" is used to indicate that the transmission direction of signals or data is a second direction transmitted from the user equipment of the cell to the station, for example, "downlink signal" indicates that the transmission direction of signals is the first direction. In addition, in the embodiment of the present application, the term "and/or" is only one kind of association relationship for describing an associated object, and means that three kinds of relationships may exist. Specifically, a and/or B may represent: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter associated objects are in an "or" relationship.

Method embodiments of the present application are described in detail above in conjunction with fig. 1-11, and apparatus embodiments of the present application are described in detail below in conjunction with fig. 12-15.

Fig. 12 is a schematic block diagram of a terminal device 400 according to an embodiment of the present application.

As shown in fig. 12, the terminal device 400 may include:

a processing unit 410 configured to determine whether a first beam is an available beam based on a strength of a signal on the first beam, the first beam being a beam on an unlicensed spectrum.

In some embodiments of the present application, the processing unit 410 is specifically configured to:

In some embodiments of the present application, the processing unit 410 is further configured to:

the available beams on the unlicensed spectrum are ranked based on the strength of the signals on the beams.

In some embodiments of the present application, the beams on the unlicensed spectrum comprise at least one beam group, a first beam group of the at least one beam group, the first beam group comprising the first beam.

Determining that the first beam is an available beam if the average strength of the signal on the first beam is less than or equal to a fifth threshold for the fifth duration; and/or

periodically detecting the strength of the signal on the transmit beam; or

It is to be understood that apparatus embodiments and method embodiments may correspond to one another and similar descriptions may refer to method embodiments. Specifically, the terminal device 400 shown in fig. 12 may correspond to a corresponding main body in executing the method 200 of the embodiment of the present application, and the foregoing and other operations and/or functions of each unit in the terminal device 400 are respectively for implementing corresponding flows in each method in fig. 3 to fig. 5, and are not described again here for brevity.

Fig. 13 is a schematic block diagram of a terminal device 500 according to an embodiment of the present application.

The terminal device 500 is described below by taking the terminal device 500 as an example of a terminal device for receiving a broadcast message. The terminal device 500 may be, for example, a first terminal as shown in fig. 6.

As shown in fig. 13, the terminal device 500 may include:

a communication unit 510 is configured to receive a broadcast signal indicating a first length of time occupied on an unlicensed spectrum.

In some embodiments of the present application, the broadcast signal is used to indicate at least one time length respectively occupied by at least one terminal device on the unlicensed spectrum; and/or the broadcast signal is used for indicating the occupation sequence of the at least one terminal device on the unlicensed spectrum; and/or the broadcast signal is used for indicating the starting time of the time respectively occupied by the at least one terminal device on the unlicensed spectrum.

In some embodiments of the present application, the communication unit 510 is further configured to:

determining a second length of time expected to be occupied on the unlicensed spectrum based on the first length of time;

and sending request information, wherein the request information is used for requesting to occupy the second time length on the unlicensed spectrum.

In some embodiments of the present application, the communication unit 510 is specifically configured to:

and periodically sending the request information.

In some embodiments of the present application, the second length of time is after the first length of time.

The terminal device 500 is described below by taking the terminal device 500 as an example of a terminal device for transmitting a broadcast message. The terminal device 500 may be, for example, a second terminal as shown in fig. 6.

As shown in fig. 13, the terminal device 500 may include:

a communication unit, 510, configured to transmit a broadcast signal, where the broadcast signal is used to indicate a first length of time that is occupied on an unlicensed spectrum.

receiving request information, wherein the request information is used for requesting to occupy a second time length on the unlicensed spectrum.

adding the second length of time to a length of time indicated by the broadcast signal.

the request message is received periodically.

and if the request message is unsuccessfully received periodically, canceling the second time length in the time length indicated by the broadcast signal.

replacing the second time duration within the time duration indicated by the broadcast signal with a third time duration.

and moving forward the starting occupation time point of the time length after the second time length in the time length indicated by the broadcast signal, wherein the time length is the second time length.

It is to be understood that apparatus embodiments and method embodiments may correspond to one another and that similar descriptions may refer to method embodiments. Specifically, the terminal device 500 shown in fig. 13 may correspond to a corresponding main body in executing the method 300 of the embodiment of the present application, and the foregoing and other operations and/or functions of each unit in the terminal device 500 are respectively for implementing corresponding flows in each method in fig. 6 to fig. 11, and are not described again here for brevity.

The communication device of the embodiments of the present application is described above from the perspective of functional modules in conjunction with the drawings. It should be understood that the functional modules may be implemented by hardware, by instructions in software, or by a combination of hardware and software modules.

Specifically, the steps of the method embodiments in the present application may be implemented by integrated logic circuits of hardware in a processor and/or instructions in the form of software, and the steps of the method disclosed in conjunction with the embodiments in the present application may be directly implemented by a hardware decoding processor, or implemented by a combination of hardware and software modules in the decoding processor.

Alternatively, the software modules may be located in a random access memory, flash memory, read only memory, programmable read only memory, electrically erasable programmable memory, registers, or other storage medium known in the art. The storage medium is located in a memory, and a processor reads information in the memory and combines hardware thereof to complete steps of the above method embodiments.

For example, the processing unit and the communication unit referred to above may be implemented by a processor and a transceiver, respectively.

Fig. 14 is a schematic configuration diagram of a communication device 600 according to an embodiment of the present application.

As shown in fig. 14, the communication device 600 may include a processor 610.

From which processor 610 may invoke and execute a computer program to implement the methods of the embodiments of the present application.

With continued reference to fig. 14, the communication device 600 may also include a memory 620.

The memory 620 may be used for storing indication information, and may also be used for storing codes, instructions and the like executed by the processor 610. From the memory 620, the processor 610 may call and run a computer program to implement the method in the embodiment of the present application. The memory 620 may be a separate device from the processor 610 or may be integrated into the processor 610.

With continued reference to fig. 14, the communication device 600 may also include a transceiver 630.

The processor 610 may control the transceiver 630 to communicate with other devices, and specifically, may transmit information or data to the other devices or receive information or data transmitted by the other devices. The transceiver 630 may include a transmitter and a receiver. The transceiver 630 may further include one or more antennas.

It should be understood that the various components in the communication device 600 are connected by a bus system that includes a power bus, a control bus, and a status signal bus in addition to a data bus.

It should also be understood that the communication device 600 may be a terminal device in this embodiment, and the communication device 600 may implement a corresponding process implemented by the terminal device in each method in this embodiment, that is, the communication device 600 in this embodiment may correspond to the terminal device 400 or the terminal device 500 in this embodiment, and may correspond to a corresponding main body in executing the

method

200 or 300 according to this embodiment, and for brevity, no further description is provided here.

In addition, the embodiment of the application also provides a chip.

For example, the chip may be an integrated circuit chip having signal processing capabilities and capable of implementing or executing the methods, steps and logic blocks disclosed in the embodiments of the present application. The chip may also be referred to as a system-on-chip, a system-on-chip or a system-on-chip, etc. Alternatively, the chip may be applied to various communication devices, so that the communication device mounted with the chip can execute the methods, steps and logic blocks disclosed in the embodiments of the present application.

Fig. 15 is a schematic structural diagram of a chip 700 according to an embodiment of the present application.

As shown in fig. 15, the chip 700 includes a processor 710.

From which processor 710 may invoke and execute a computer program to implement the methods of the embodiments of the present application.

With continued reference to fig. 15, the chip 700 may further include a memory 720.

From the memory 720, the processor 710 can call and run a computer program to implement the method in the embodiment of the present application. The memory 720 may be used to store instructions and codes, instructions, etc. that may be executed by the processor 710. The memory 720 may be a separate device from the processor 710 or may be integrated into the processor 710.

With continued reference to fig. 15, the chip 700 may further include an input interface 730.

The processor 710 may control the input interface 730 to communicate with other devices or chips, and in particular, may obtain information or data transmitted by other devices or chips.

With continued reference to fig. 15, the chip 700 may further include an output interface 740.

The processor 710 may control the output interface 740 to communicate with other devices or chips, and in particular, may output information or data to the other devices or chips.

It should be understood that the chip 700 may be applied to the terminal device in the embodiment of the present application, and the chip may implement the corresponding process implemented by the terminal device in each method in the embodiment of the present application, and for brevity, no further description is provided here.

It will also be appreciated that the various components in the chip 700 are connected by a bus system that includes a power bus, a control bus, and a status signal bus in addition to a data bus.

The processors referred to above may comprise, but are not limited to:

general purpose processors, digital Signal Processors (DSPs), application Specific Integrated Circuits (ASICs), field Programmable Gate Arrays (FPGAs) or other Programmable logic devices, discrete Gate or transistor logic devices, discrete hardware components, and the like.

The processor may be used to implement or perform the methods, steps, and logic blocks disclosed in the embodiments of the present application. The steps of the method disclosed in connection with the embodiments of the present application 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 module may be located in ram, flash memory, rom, prom, eprom, or eprom, registers, etc. storage media as is well known in the art. The storage medium is located in a memory, and a processor reads information in the memory and completes the steps of the method in combination with hardware of the processor.

The memories referred to above include, but are not limited to:

volatile memory and/or non-volatile 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 example, but 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 SDRAM), enhanced Synchronous SDRAM (ESDRAM), synchronous Link DRAM (SLDRAM), and Direct Rambus RAM (DR RAM).

It should be noted that the memory described herein is intended to comprise these and any other suitable types of memory.

The embodiment of the application also provides a computer readable storage medium for storing the computer program. The computer readable storage medium stores one or more programs, the one or more programs comprising instructions, which when executed by a portable electronic device comprising a plurality of application programs, enable the portable electronic device to perform the methods of the method embodiments.

Optionally, the computer-readable storage medium may be applied to the network device in the embodiment of the present application, and the computer program enables the computer to execute the corresponding process implemented by the network device in each method in the embodiment of the present application, which is not described herein again for brevity.

Optionally, the computer-readable storage medium may be applied to the mobile terminal/terminal device in the embodiment of the present application, and the computer program enables the computer to execute the corresponding process implemented by the mobile terminal/terminal device in each method in the embodiment of the present application, which is not described herein again for brevity.

The embodiment of the application also provides a computer program product comprising the computer program.

Optionally, the computer program product may be applied to the network device in the embodiment of the present application, and the computer program enables the computer to execute the corresponding process implemented by the network device in each method in the embodiment of the present application, which is not described herein again for brevity.

Optionally, the computer program product may be applied to the mobile terminal/terminal device in the embodiment of the present application, and the computer program enables the computer to execute the corresponding process implemented by the mobile terminal/terminal device in each method in the embodiment of the present application, which is not described herein again for brevity.

The embodiment of the application also provides a computer program. The computer program, when executed by a computer, enables the computer to perform the methods of the method embodiments.

Optionally, the computer program may be applied to the network device in the embodiment of the present application, and when the computer program runs on a computer, the computer is enabled to execute the corresponding process implemented by the network device in each method in the embodiment of the present application, and for brevity, details are not described here again.

In addition, an embodiment of the present application further provides a communication system, where the communication system may include the terminal device mentioned above to form the communication system 100 shown in fig. 1, and for brevity, details are not described herein again. It should be noted that the term "system" and the like herein may also be referred to as "network management architecture" or "network system" and the like.

It is also to be understood that the terminology used in the embodiments of the present application and the appended claims is for the purpose of describing particular embodiments only, and is not intended to be limiting of the embodiments of the present application.

For example, as used in the examples of this application and the appended claims, the singular forms "a," "an," "the," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.

Those of skill in the art would 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 embodiments of the present application.

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 solutions of the embodiments of the present application may be essentially implemented or make a contribution to the prior art, or may be implemented in the form of a software product stored in a storage medium and including several 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 methods described in the embodiments of the present application. And the aforementioned storage medium includes: u disk, removable hard disk, read only memory, random access memory, magnetic disk or optical disk, etc. for storing program codes.

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 several embodiments provided in the present application, it should be understood that the disclosed system, apparatus, and method may be implemented in other ways.

For example, the division of a unit or a module or a component in the above-described device embodiments is only one logical function division, and there may be other divisions in actual implementation, for example, a plurality of units or modules or components may be combined or may be integrated into another system, or some units or modules or components may be omitted, or not executed.

Also for example, the units/modules/components described above as separate/display components may or may not be physically separate, may be located in one place, or may be distributed over a plurality of network elements. Some or all of the units/modules/components can be selected according to actual needs to achieve the purposes of the embodiments of the present application.

Finally, it should be noted that the above 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 above description is only a specific implementation of the embodiments of the present application, but the scope of the embodiments of the present application is not limited thereto, and any person skilled in the art can easily conceive of changes or substitutions within the technical scope of the embodiments of the present application, and all the changes or substitutions should be covered by the scope of the embodiments of the present application. Therefore, the protection scope of the embodiments of the present application shall be subject to the protection scope of the claims.

Claims

A method of wireless communication, comprising:

determining whether a first beam is an available beam based on a strength of a signal on the first beam, the first beam being a beam on an unlicensed spectrum.
The method of claim 1, wherein the first beam is a beam in a first direction on the unlicensed spectrum.
The method of claim 1 or 2, wherein the determining whether the first beam is an available beam based on the strength of the signal on the first beam comprises:

determining that the first beam is not an available beam if the strength of the signal on the first beam is greater than a first threshold for a first duration; and/or

Determining that the first beam is not an available beam if the average strength of the signal on the first beam is greater than the first threshold for the first duration; and/or

Determining that the first beam is an available beam if the strength of the signal on the first beam is less than or equal to a second threshold for a second duration; the second threshold is less than or equal to the first threshold; and/or

Determining that the first beam is an available beam if the average strength of the signal on the first beam is less than or equal to a second threshold for the second duration; and/or

If the intensity of the signal on the first beam is less than or equal to a third threshold value within a third duration, determining the first beam as a high-quality alternative beam in the available beams; the third threshold is less than or equal to the second threshold; and/or

And if the average intensity of the signal on the first beam is less than or equal to a third threshold value in the third duration, determining that the first beam is a good-quality alternative beam in the available beams.
The method of claim 3, further comprising:

the available beams on the unlicensed spectrum are ordered based on the strength of the signals on the beams.
The method of claim 1 or 2, wherein the beams over the unlicensed spectrum comprise at least one beam group, a first beam group of the at least one beam group, the first beam group comprising the first beam.
The method of claim 5, wherein determining whether the first beam is an available beam based on the strength of the signal on the first beam comprises:

determining that none of the beams in the first beam group are usable beams if the strength of the signal on the first beam is greater than a fourth threshold for a fourth duration; and/or

Determining that none of the beams in the first beam group are usable beams if the average strength of the signal on the first beam is greater than the fourth threshold for the fourth duration; and/or

Determining that the first beam is an available beam if the strength of the signal on the first beam is less than or equal to a fifth threshold for a fifth duration; whether other beams within the first beam group are available beams is determined based on the strength of signals on the other beams, the fifth threshold being less than or equal to the fourth threshold; and/or

Determining that the first beam is an available beam if the average strength of the signal on the first beam is less than or equal to a fifth threshold for the fifth duration; and/or

Determining that the beams in the first beam group are all available beams if the strength of the signal on the first beam is greater than a sixth threshold for a sixth duration; the sixth threshold is less than or equal to the fifth threshold; and/or

Determining that all beams in the first beam group are usable beams if the average intensity of the signal on the first beam is less than or equal to a sixth threshold for the sixth duration.
The method of claim 6, wherein the sixth threshold is equal to the fifth threshold; the method further comprises the following steps:

determining a determination manner for determining whether the other beam is an available beam.
The method according to any one of claims 1 to 7, further comprising:

determining a transmit beam for transmitting data among the available beams over the unlicensed spectrum.
The method of claim 8, further comprising:

periodically detecting the strength of the signal on the transmit beam; or

Periodically detecting a strength of a signal on each available beam on the unlicensed spectrum.
The method of claim 9, further comprising:

if the strength of the signal on the transmit beam is less than or equal to a seventh threshold for a seventh duration, adjusting the beam used to transmit data.
A method of wireless communication, comprising:

a broadcast signal is received indicating a first length of time occupied on an unlicensed spectrum.
The method of claim 11, wherein the broadcast signal is used to indicate at least one time length respectively occupied by at least one terminal device on the unlicensed spectrum; and/or, the broadcast signal is used for indicating an occupation sequence of the at least one terminal device on the unlicensed spectrum; and/or the broadcast signal is used for indicating the starting time of the time respectively occupied by the at least one terminal device on the unlicensed spectrum.
The method according to claim 11 or 12, further comprising:

determining a second length of time expected to be occupied on the unlicensed spectrum based on the first length of time;

and sending request information, wherein the request information is used for requesting to occupy the second time length on the unlicensed spectrum.
The method of claim 13, wherein the sending the request message comprises:

and periodically sending the request information.
The method of claim 14, wherein the second length of time is after the first length of time.
A method of wireless communication, comprising:

transmitting a broadcast signal indicating a first length of time occupied on an unlicensed spectrum.
The method of claim 16, wherein the broadcast signal is used to indicate at least one time length respectively occupied by at least one terminal device on the unlicensed spectrum; and/or the broadcast signal is used for indicating the occupation sequence of the at least one terminal device on the unlicensed spectrum; and/or the broadcast signal is used for indicating the starting time of the time respectively occupied by the at least one terminal device on the unlicensed spectrum.
The method according to claim 16 or 17, further comprising:

receiving request information, wherein the request information is used for requesting to occupy a second time length on the unlicensed spectrum.
The method of claim 18, further comprising:

adding the second length of time to a length of time indicated by the broadcast signal.
The method of claim 19, wherein the second length of time is after the first length of time.
The method according to any of claims 18 to 20, wherein the receiving a request message comprises:

the request message is received periodically.
The method of claim 21, further comprising:

and if the request message is failed to be received periodically, canceling the second time length in the time length indicated by the broadcast signal.
The method of claim 22, wherein said canceling the second time duration within the time duration indicated by the broadcast signal comprises:

replacing the second time duration within the time duration indicated by the broadcast signal with a third time duration.
The method of claim 22, wherein said canceling the second time duration within the time duration indicated by the broadcast signal comprises:

and moving forward the starting occupation time point of the time length after the second time length within the time length indicated by the broadcast signal, wherein the moving time length is the second time length.
A terminal device, comprising:

a processing unit configured to determine whether a first beam is an available beam based on a strength of a signal on the first beam, the first beam being a beam on an unlicensed spectrum.
A terminal device, comprising:

a communication unit configured to receive a broadcast signal indicating a first length of time occupied on an unlicensed spectrum.
A terminal device, comprising:

a communication unit configured to transmit a broadcast signal indicating a first length of time occupied on an unlicensed spectrum.
A terminal device, comprising:

a processor, a memory for storing a computer program, and a transceiver, the processor for invoking and executing the computer program stored in the memory to perform the method of any of claims 1-10.
A terminal device, comprising:

a processor, a memory for storing a computer program, and a transceiver, the processor for invoking and executing the computer program stored in the memory to perform the method of any one of claims 11 to 15.
A terminal device, comprising:

a processor, a memory for storing a computer program, and a transceiver, the processor for invoking and executing the computer program stored in the memory to perform the method of any one of claims 16 to 24.
A chip, comprising:

a processor for calling and running a computer program from a memory, causing a device on which the chip is installed to perform the method of any of claims 1 to 10, the method of any of claims 11 to 15, or the method of any of claims 16 to 24.
A computer-readable storage medium for storing a computer program which causes a computer to perform the method of any one of claims 1 to 10, the method of any one of claims 11 to 15 or the method of any one of claims 16 to 24.
A computer program product comprising computer program instructions to cause a computer to perform the method of any of claims 1 to 10, the method of any of claims 11 to 15 or the method of any of claims 16 to 24.
A computer program, characterized in that the computer program causes a computer to perform the method of any of claims 1 to 10, the method of any of claims 11 to 15 or the method of any of claims 16 to 24.