A method of sharing channel occupancy time (COT) and apparatuses thereof

Abstract

The method and device for sharing channel occupancy time (COT) are disclosed in the embodiments of the present disclosure, which can be applied to the technical field of communication. The method performed by a first terminal device comprises: sending COT sharing information to a second terminal device, wherein the COT sharing information is used to indicate the COT used by the second terminal device. Thus, the second terminal device can share the COT with the first terminal device based on the COT sharing information, so that the terminal device obtains a longer communication time, improves the LBT success rate, and meets the communication service demand.

Description

Technical Field

[0001] This disclosure relates to the field of communication technology, and in particular to a method and apparatus for sharing Channel Occupancy Time (COT). Background Technology

[0002] With the continuous emergence of new communication services and application demands, Sidelink (SL) communication is facing increasingly higher requirements for performance in terms of transmission bandwidth, communication rate, communication latency, reliability, and scalability. Limited licensed spectrum alone cannot meet the diverse application scenarios and needs of the future. Therefore, research on Sidelink communication technology for terminal devices on unlicensed spectrum is urgently needed. Summary of the Invention

[0003] This disclosure provides a method and apparatus for sharing Channel Occupancy Time (COT), which can be applied to the field of communication technology.

[0004] In a first aspect, embodiments of this disclosure provide a method for sharing Channel Occupancy Time (COT), the method being executed by a first terminal device, the method comprising: sending COT sharing information to a second terminal device, the COT sharing information being used to indicate the COT used by the second terminal device.

[0005] In this disclosure, the first terminal device sends COT sharing information to the second terminal device, enabling the second terminal device to share COT with the first terminal device based on the COT sharing information, thereby allowing the terminal device to obtain a longer communication time, improve the LBT success rate, and meet the communication service requirements.

[0006] Secondly, embodiments of this disclosure provide another method for sharing Channel Occupancy Time (COT), the method being executed by a second terminal device, the method comprising: receiving COT sharing information sent by a first terminal device, the COT sharing information being used to indicate the COT used by the second terminal device.

[0007] In this disclosure, the second terminal device determines the COT it uses by receiving COT sharing information sent by the first terminal device, thereby enabling it to share the COT with the first terminal device based on the COT sharing information. This allows the terminal device to obtain a longer communication time, improves the LBT success rate, and meets the communication service requirements.

[0008] Thirdly, embodiments of this disclosure provide a first terminal device, including:

[0009] The transceiver module is used to send COT sharing information to the second terminal device, wherein the COT sharing information is used to indicate the COT used by the second terminal device.

[0010] Fourthly, embodiments of this disclosure provide a second terminal device, including:

[0011] The transceiver module is used to receive COT sharing information sent by the first terminal device, wherein the COT sharing information is used to indicate the COT used by the second terminal device.

[0012] Fifthly, embodiments of this disclosure provide a communication device including a processor that, when the processor invokes a computer program in memory, executes the method described in the first aspect.

[0013] In a sixth aspect, embodiments of this disclosure provide a communication device including a processor that, when the processor invokes a computer program in memory, executes the method described in the second aspect above.

[0014] In a seventh aspect, embodiments of this disclosure provide a communication device including a processor and a memory, the memory storing a computer program; when the computer program is executed by the processor, the communication device performs the method described in the first aspect above.

[0015] Eighthly, embodiments of this disclosure provide a communication device including a processor and a memory storing a computer program; when the computer program is executed by the processor, the communication device performs the method described in the second aspect above.

[0016] Ninthly, embodiments of this disclosure provide a communication device including a processor and an interface circuit. The interface circuit is configured to receive code instructions and transmit them to the processor, which is configured to execute the code instructions to cause the device to perform the method described in the first aspect above.

[0017] In a tenth aspect, embodiments of this disclosure provide a communication device including a processor and an interface circuit. The interface circuit is configured to receive code instructions and transmit them to the processor, which is configured to execute the code instructions to cause the device to perform the method described in the second aspect above.

[0018] Eleventhly, embodiments of this disclosure provide a communication system, which includes the first terminal device described in the third aspect and the second terminal device described in the fourth aspect; or, the system includes the communication device described in the fifth aspect and the communication device described in the sixth aspect; or, the system includes the communication device described in the seventh aspect and the communication device described in the eighth aspect; or, the system includes the communication device described in the ninth aspect and the communication device described in the tenth aspect.

[0019] In a twelfth aspect, embodiments of the present invention provide a computer-readable storage medium for storing instructions for use by the first terminal device described above, which, when executed, cause the method described in the first aspect to be implemented.

[0020] In a thirteenth aspect, embodiments of the present invention provide a computer-readable storage medium for storing instructions for use by the second terminal device described above, which, when executed, enable the method described in the second aspect to be implemented.

[0021] In a fourteenth aspect, this disclosure also provides a computer program product including a computer program that, when run on a computer, causes the computer to perform the method described in the first aspect above.

[0022] In a fifteenth aspect, this disclosure also provides a computer program product including a computer program that, when run on a computer, causes the computer to perform the method described in the second aspect above.

[0023] In a sixteenth aspect, this disclosure provides a chip system including at least one processor and an interface for supporting a first terminal device in implementing the functions involved in the first aspect, such as determining or processing at least one of the data and information involved in the above methods. In one possible design, the chip system further includes a memory for storing computer programs and data necessary for the first terminal device. The chip system may be composed of chips or may include chips and other discrete devices.

[0024] In a seventeenth aspect, this disclosure provides a chip system including at least one processor and an interface for supporting a second terminal device in implementing the functions involved in the second aspect, such as determining or processing at least one of the data and information involved in the above methods. In one possible design, the chip system further includes a memory for storing computer programs and data necessary for the second terminal device. The chip system may be composed of chips or may include chips and other discrete devices.

[0025] In an eighteenth aspect, this disclosure provides a computer program that, when run on a computer, causes the computer to perform the method described in the first aspect above.

[0026] In a nineteenth aspect, this disclosure provides a computer program that, when run on a computer, causes the computer to perform the method described in the second aspect above. Attached Figure Description

[0027] To more clearly illustrate the technical solutions in the embodiments or background art of this disclosure, the accompanying drawings used in the embodiments or background art of this disclosure will be described below.

[0028] Figure 1 This is a schematic diagram of the architecture of a communication system provided in an embodiment of this disclosure;

[0029] Figure 2 This is a flowchart illustrating a method for sharing Channel Occupancy Time (COT) according to an embodiment of this disclosure;

[0030] Figure 3 This is a flowchart illustrating a method for sharing Channel Occupancy Time (COT) according to another embodiment of this disclosure;

[0031] Figure 4 This is a flowchart illustrating a method for sharing Channel Occupancy Time (COT) according to another embodiment of this disclosure;

[0032] Figure 5 This is a flowchart illustrating a method for sharing Channel Occupancy Time (COT) according to another embodiment of this disclosure;

[0033] Figure 6 This is a flowchart illustrating a method for sharing Channel Occupancy Time (COT) according to another embodiment of this disclosure;

[0034] Figure 7 This is a flowchart illustrating a method for sharing Channel Occupancy Time (COT) according to another embodiment of this disclosure;

[0035] Figure 8 This is a flowchart illustrating a method for sharing Channel Occupancy Time (COT) according to another embodiment of this disclosure;

[0036] Figure 9 This is a flowchart illustrating a method for sharing Channel Occupancy Time (COT) according to another embodiment of this disclosure;

[0037] Figure 10 This is a schematic diagram of the structure of a communication device according to an embodiment of the present disclosure;

[0038] Figure 11 This is a schematic diagram of the structure of a communication device according to another embodiment of the present disclosure;

[0039] Figure 12 This is a schematic diagram of the structure of a chip according to an embodiment of the present disclosure. Detailed Implementation

[0040] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numerals in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this disclosure. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this disclosure as detailed in the appended claims.

[0041] It is understood that in this disclosure, "multiple" refers to two or more, and other quantifiers are similar. "And / or" describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A alone, A and B simultaneously, and B alone. The character " / " generally indicates that the preceding and following related objects are in an "or" relationship. The singular forms "a," "the," and "the" are also intended to include the plural forms unless the context clearly indicates otherwise.

[0042] To facilitate understanding, the terminology used in this application will be introduced first.

[0043] To better understand the Channel Occupancy Time (COT) sharing method disclosed in this disclosure, the communication system to which this disclosure applies is first described below.

[0044] Please see Figure 1 , Figure 1 This is a schematic diagram of a communication system architecture provided in an embodiment of this disclosure. The communication system may include, but is not limited to, three terminal devices, wherein the terminal devices communicate with each other via Sidelink. Figure 1 The number and form of the devices shown are for illustrative purposes only and do not constitute a limitation on the embodiments of this disclosure. Figure 1 The communication system shown is exemplified by a first terminal device 101, a second terminal device 102, and a third terminal device 103.

[0045] It should be noted that the technical solutions of this disclosure can be applied to various communication systems. For example, Long Term Evolution (LTE) systems, 5th Generation (5G) mobile communication systems, 5G New Radio (NR) systems, or other future new mobile communication systems.

[0046] The first terminal device 101, the second terminal device 102, and the third terminal device 103 in this embodiment can each be an entity used to receive or transmit signals, such as a mobile phone. Terminal devices can also be called terminal equipment, user equipment (UE), mobile station (MS), mobile terminal (MT), etc. Terminal devices can be communication-enabled vehicles, smart cars, mobile phones, wearable devices, tablets, computers with wireless transceiver capabilities, virtual reality (VR) terminal devices, augmented reality (AR) terminal devices, wireless terminal devices in industrial control, wireless terminal devices in self-driving, wireless terminal devices in remote medical surgery, wireless terminal devices in smart grids, wireless terminal devices in transportation safety, wireless terminal devices in smart cities, wireless terminal devices in smart homes, and so on. The embodiments disclosed herein do not limit the specific technology or device form used in the terminal device.

[0047] It is understood that the communication system described in the embodiments of this disclosure is for the purpose of more clearly illustrating the technical solutions of the embodiments of this disclosure, and does not constitute a limitation on the technical solutions provided in the embodiments of this disclosure. As those skilled in the art will know, with the evolution of system architecture and the emergence of new business scenarios, the technical solutions provided in the embodiments of this disclosure are also applicable to similar technical problems.

[0048] The method and apparatus for sharing Channel Occupancy Time (COT) provided in this disclosure will be described in detail below with reference to the accompanying drawings.

[0049] Please see Figure 2 , Figure 2 This is a flowchart illustrating a method for sharing Channel Occupancy Time (COT) according to an embodiment of this disclosure, which is executed by a first terminal device. Figure 2 As shown, the method may include, but is not limited to, the following steps:

[0050] Step 21: Send COT sharing information to the second terminal device. The COT sharing information is used to indicate the COT used by the second terminal device.

[0051] The first terminal device is used to initiate COT, and the second terminal device is a terminal device that shares COT.

[0052] In one implementation, COT shared information may include time-domain resources and / or frequency-domain resources allocated to the second terminal device.

[0053] The time domain resources allocated by the first terminal device to the second terminal device can be used to indicate which part of the COT time domain resources the second terminal device can share, so that the second terminal device can transmit information based on the allocated time domain resources.

[0054] The frequency domain resources allocated by the first terminal device to the second terminal device can be used to indicate which part of the COT frequency domain resources the second terminal device can share, so that the second terminal device can transmit information based on the allocated frequency domain resources.

[0055] In one implementation, after receiving the time-domain and / or frequency-domain resources of COT allocated by the first terminal device, the second terminal device may perform type 2 (listen-before-talk, LBT) access channel on the allocated time-frequency domain resources.

[0056] In one implementation, COT shared information may also include COT usage information.

[0057] The usage information of the COT is used to notify the terminal devices sharing the COT of its usage status. For example, the COT usage information may include the total length of the COT, the length already used, the remaining length of the COT, and the COT's sharing status indication information, etc. This disclosure does not limit this. Therefore, after receiving the COT usage information, the second terminal device can share the COT based on this information.

[0058] The shared status indication information of COT is used to indicate whether the information transmission of the current time slot or micro time slot uses COT, or whether the information transmission of the future time slot or micro time slot can use COT. The future time slot refers to the next one or more time slots of the current time slot.

[0059] By implementing the embodiments of this disclosure, the first terminal device sends COT sharing information to the second terminal device, enabling the second terminal device to share COT with the first terminal device based on the COT sharing information, thereby allowing the terminal device to obtain a longer communication time, improving the LBT success rate, and meeting the communication service requirements.

[0060] Please see Figure 3 , Figure 3This is a flowchart illustrating another method for sharing Channel Occupancy Time (COT) according to an embodiment of this disclosure, which is executed by a first terminal device. Figure 3 As shown, the method may include, but is not limited to, the following steps:

[0061] Step 31: Send COT sharing information to the second terminal device. The COT sharing information includes time-domain resources and / or frequency-domain resources allocated to the second terminal device.

[0062] In one implementation, the COT sharing information may also include the starting position and length of frequency domain resources, or the starting time slot position and time slot length of time domain resources.

[0063] Optionally, the granularity of frequency domain resource allocation can be a sub-channel or an interlaced resource block (IRB) index. This disclosure does not limit this.

[0064] The starting position of the frequency domain resources can be the starting frequency domain resources when the second terminal device transmits information. For example, the nth sub-channel or the nth comb resource block.

[0065] The length of the frequency domain resource can be the frequency domain resource occupied by the second terminal device for information transmission. For example, the length of the frequency domain resource can be 3 sub-channels or 2 comb resource blocks. This disclosure does not limit this.

[0066] Optionally, the frequency domain resources allocated by the first terminal device to each second terminal device can be the same or different. If the frequency domain resources allocated by the first terminal device to each second terminal device are the same, the frequency domain resource information only needs to be indicated once. If the frequency domain resources allocated by the first terminal device to each second terminal device are different, the frequency domain resource information needs to be indicated to each second terminal device.

[0067] For example, if the first terminal device allocates different frequency domain resources to each second terminal device, the starting position of the frequency domain resources allocated by the first terminal device to the second terminal device 1 can be subchannel 0, and the length can be 4. Then the frequency domain resources that the second terminal device 1 can use are subchannel 0-4. If the starting position of the frequency domain resources allocated by the first terminal device to the second terminal device 2 is subchannel 3, and the length can be 4, then the frequency domain resources that the second terminal device 2 can use are subchannel 3-7.

[0068] The starting time slot position of the time domain resource can be the starting time slot when the second terminal device transmits information. For example, the second time slot solt2, the third time slot solt3, etc.

[0069] The length of the time-domain resource can be the number of time slots occupied by the second terminal device for information transmission. For example, the length of the time-domain resource can be 3 time slots, 2 time slots, etc.

[0070] In some embodiments of this disclosure, if the second terminal device sharing the COT transmits based on a single timeslot, i.e., the timeslot length is one slot, then only the starting timeslot position where the second terminal device can share the COT can be indicated. Optionally, it can be indicated by a timeslot offset value relative to the starting position of the COT. This disclosure does not limit this.

[0071] For example, if the starting position of COT is solt0, and the time slot offset of the second terminal device relative to solt0 is 3, then the starting time slot position of the second terminal device is solt2.

[0072] In some embodiments of this disclosure, if the second terminal device sharing COT transmits based on multiple time slots, i.e., the time slot length is not 1 slot, then it is necessary to indicate the start position and length of the time domain resources allocated to each second terminal device respectively.

[0073] For example, the total length of the COT time slots is 10 slots. The second terminal devices sharing this COT include second terminal device 1, second terminal device 2, and second terminal device 3. The first terminal device uses slots 0, 1, and 2. The actual time slot allocated to second terminal device 1 is slot 3 with a length of 2; the actual time slot allocated to second terminal device 2 is slot 5 with a length of 3; and the actual time slot allocated to second terminal device 3 is slot 8 with a length of 2.

[0074] In this embodiment of the disclosure, in order for each second terminal device to accurately obtain the time-domain resources and / or frequency-domain resources allocated to it by the first terminal device from the COT shared information, the first terminal device may also include the identity information of each second terminal device in the COT shared information.

[0075] In one implementation, the COT shared information also includes ID information, which may include at least one of the following:

[0076] Layer 1 destination ID or source ID information of the second terminal device;

[0077] The group ID (member id) of each second terminal device in the multicast.

[0078] In this embodiment of the disclosure, the identifier (ID) information included in the COT sharing information is used to indicate the ID information of the second terminal device, that is, to distinguish the identity information of different second terminal devices sharing the same COT.

[0079] The Layer 1 destination ID of the second terminal device can be understood as the physical layer ID of the second terminal device.

[0080] In one implementation, the first terminal device can also allocate time-domain resources and / or frequency-domain resources to multiple second terminal devices sharing the same COT, based on their respective group IDs.

[0081] By implementing the embodiments of this disclosure, the first terminal device sends time-domain resources and / or frequency-domain resources allocated to the second terminal device, thereby enabling the second terminal device to share COT with the first terminal device based on COT sharing information, thereby allowing the terminal device to obtain a longer communication time, improving LBT success rate, and meeting communication service requirements.

[0082] Please see Figure 4 , Figure 4 This is a flowchart illustrating another method for sharing Channel Occupancy Time (COT) according to an embodiment of this disclosure, which is executed by a first terminal device. Figure 4 As shown, the method may include, but is not limited to, the following steps:

[0083] Step 41: Send COT sharing information to the second terminal device. The COT sharing information includes the same frequency domain resources allocated to each second terminal device.

[0084] In this embodiment of the disclosure, the frequency domain resources allocated by the first terminal device to all second terminal devices can be the same, and the starting position and length of the frequency domain resources can be pre-configured. Assume the frequency domain resources are the entire LBT subband.

[0085] In this embodiment of the disclosure, the COT shared information may further include time-domain resources allocated to the second terminal device and ID information. Thus, each second terminal device can obtain the corresponding time-domain resources from the received COT shared information based on its own ID information.

[0086] For example, the first terminal device UE1 initiates a COT (Content Occurrence Time) with a length of 4 ms. When the subcarrier is 15 kHz, the COT length is 4 slots. UE1 uses slot 0 for information transmission and sends COT sharing information in slot 0, indicating that the second terminal device with destination ID UE2 shares the time slot 1 of the COT, using subchannels 0-4 in the frequency domain; indicating that the second terminal device with destination ID UE3 shares the time slot 2 of the COT, using subchannels 3-7 in the frequency domain; and indicating that the second terminal device with destination ID UE4 shares the time slot 3 of the COT, using subchannels 3-7 in the frequency domain.

[0087] By implementing the embodiments of this disclosure, frequency domain resources can be pre-configured for the second terminal device. Then, by sending COT sharing information containing time domain resources to the second terminal device, the second terminal device can share COT with the first terminal device based on the COT sharing information, thereby enabling the terminal device to obtain a longer communication time, improve the LBT success rate, and meet the communication service requirements.

[0088] Please see Figure 5 , Figure 5 This is a flowchart illustrating another method for sharing Channel Occupancy Time (COT) according to an embodiment of this disclosure, which is executed by a first terminal device. Figure 5 As shown, the method may include, but is not limited to, the following steps:

[0089] Step 51: Send COT sharing information to the second terminal device. The COT sharing information is used to indicate the COT used by the second terminal device.

[0090] In one implementation, COT shared information may include at least one of the following:

[0091] The remaining length of the COT;

[0092] COT sharing status indication information; COT sharing status indication information is used to indicate whether COT is used for information transmission in the current time slot or micro time slot, or whether COT can be used for information transmission in future time slots or micro time slots. Future time slots refer to the next one or more time slots after the current time slot, and future micro time slots refer to the next one or more micro time slots after the current micro time slot.

[0093] In this embodiment of the disclosure, the remaining length of the COT can be understood as the length of the COT available for use by the second terminal device, which can be determined by the first terminal device based on different situations.

[0094] In some embodiments of this disclosure, the remaining length of the COT can be represented using bit length. For example, assuming the remaining length of the COT is 3 slots, it can be represented using "0111". Optionally, the remaining length of the COT can be indicated by an indicator signal, which points to a row in a pre-configured table of remaining COT lengths, corresponding to the value of the remaining COT length in units of slots or minislots.

[0095] In this embodiment, a 1-bit information segment can be used to represent the sharing status indication information of the COT. For example, "1" indicates that the COT is not interrupted, and the information transmission of the second terminal device in the current time slot or in the future time slot can share the COT, and the second terminal device uses the type 2 LBT access channel. "0" indicates that the COT has been interrupted, and the information transmission of the second terminal device in the current time slot or in the future time slot cannot share the COT, and can only use the type 1 type 1 LBT access channel.

[0096] For example, if the COT sharing information sent by the first terminal device includes the remaining length of the COT, and the first terminal device UE1 initiates a COT with a length of 6 slots, and UE1 uses slot 0 for information transmission, then the remaining length of the sent COT is 5 slots. For the second terminal device UE2 sharing the COT, UE2 shares the COT and uses slot 1 for information transmission, then UE2 continues to send the remaining length of the COT for 4 slots, until the other second terminal devices sharing the COT use the last slot, i.e., slot 5, for information transmission, and the remaining length of the sent COT is 0.

[0097] For example, if the COT sharing information sent by the first terminal device includes COT sharing status indication information, and the first terminal device UE1 initiates a COT with a length of 6 slots, UE1 uses slot 0 for its own transmission and sends the COT sharing status information, if the information bit is "1", it indicates that the COT is not interrupted. The second terminal device UE2 can share the COT and perform information transmission on slot 1, and also send the COT sharing status information. If the information bit is "0", it indicates that the COT is interrupted. Starting from slot 2, other terminal devices cannot use the COT even if the COT sharing condition is met. Other terminal devices can only use type 1 LBTs to access the channel.

[0098] By implementing the embodiments of this disclosure, COT sharing information can be sent to the second terminal device, enabling the second terminal device to share COT with the first terminal device based on the COT sharing information, thereby allowing the terminal device to obtain a longer communication time, improve the LBT success rate, and meet the communication service requirements.

[0099] Please see Figure 6 , Figure 6 This is a flowchart illustrating another method for sharing Channel Occupancy Time (COT) according to an embodiment of this disclosure, which is executed by a second terminal device. Figure 6 As shown, the method may include, but is not limited to, the following steps:

[0100] Step 61: Receive COT sharing information sent by the first terminal device. The COT sharing information is used to indicate the COT used by the second terminal device.

[0101] The first terminal device is used to initiate COT, and the second terminal device is a terminal device that shares COT.

[0102] In one implementation, COT shared information may include time-domain resources and / or frequency-domain resources allocated by the first terminal device to the second terminal device.

[0103] The time domain resources allocated by the first terminal device to the second terminal device can be used to indicate which part of the COT time domain resources the second terminal device can share, so that the second terminal device can transmit information based on the allocated time domain resources.

[0104] The frequency domain resources allocated by the first terminal device to the second terminal device can be used to indicate which part of the COT frequency domain resources the second terminal device can share, so that the second terminal device can transmit information based on the allocated frequency domain resources.

[0105] In one implementation, after receiving the time-domain and / or frequency-domain resources of the COT allocated by the first terminal device, the second terminal device can access the channel using the type 2 listen-before-talk (LBT) method based on the allocated time-domain and / or frequency-domain resources.

[0106] In one implementation, COT shared information may also include COT usage information.

[0107] The usage information of the COT is used to notify the second terminal device sharing the COT of its usage status. For example, the COT usage information may include the total length of the COT, the length of the COT already used, the remaining length of the COT, and the COT sharing status indication information, etc. This disclosure does not limit this. Furthermore, the second terminal device can share the COT based on the COT usage information.

[0108] The shared status indication information of COT is used to indicate whether the information transmission of the current time slot uses COT, or whether the information transmission of future time slots can use COT. Future time slots refer to the next one or more time slots of the current time slot.

[0109] By implementing the embodiments of this disclosure, the second terminal device determines the COT it uses by receiving COT sharing information sent by the first terminal device, thereby enabling it to share the COT with the first terminal device based on the COT sharing information, thus allowing the terminal device to obtain a longer communication time, improve the LBT success rate, and meet the communication service requirements.

[0110] Please see Figure 7 , Figure 7 This is a flowchart illustrating another method for sharing Channel Occupancy Time (COT) according to an embodiment of this disclosure, which is executed by a second terminal device. Figure 7 As shown, the method may include, but is not limited to, the following steps:

[0111] Step 71: Receive COT sharing information sent by the first terminal device, wherein the COT sharing information includes time domain resources and / or frequency domain resources allocated by the first terminal device to the second terminal device.

[0112] Optionally, COT sharing information may also include the starting position and length of frequency domain resources, or the starting time slot position and time slot length of time domain resources.

[0113] Optionally, the granularity of frequency domain resource allocation can be a sub-channel or an interlaced resource block (IRB) index. This disclosure does not limit this.

[0114] The starting position of the frequency domain resources can be the starting frequency domain resources when the second terminal device transmits information. For example, the nth sub-channel or the nth comb resource block.

[0115] The length of the frequency domain resource can be the frequency domain resource occupied by the second terminal device for information transmission. For example, the length of the frequency domain resource can be 3 sub-channels or 2 comb resource blocks. This disclosure does not limit this.

[0116] Optionally, the frequency domain resources allocated by the first terminal device to each second terminal device in the COT shared information can be the same or different. If the frequency domain resources allocated by the first terminal device to each second terminal device are the same, the frequency domain resource information only needs to be indicated once. If the frequency domain resources allocated by the first terminal device to each second terminal device are different, the frequency domain resource information needs to be indicated to each second terminal device.

[0117] For example, if the first terminal device allocates different frequency domain resources to each second terminal device, the starting position of the frequency domain resources allocated by the first terminal device to second terminal device 1 could be subchannel 0, and the length could be 4. Then, the frequency domain resources usable by second terminal device 1 would be subchannel 0-4. If the starting position of the frequency domain resources allocated by the first terminal device to second terminal device 2 is subchannel 3, and the length could be 4, then the frequency domain resources usable by second terminal device 2 would be subchannel 3-7. Afterwards, each second terminal device can determine its corresponding frequency domain resources from the COT shared information based on its own ID information.

[0118] The starting time slot position of the time domain resource can be the starting time slot when the second terminal device transmits information. For example, the second time slot solt2, the third time slot solt3, etc.

[0119] The length of the time-domain resource can be the number of time slots occupied by the second terminal device for information transmission. For example, the length of the time-domain resource can be 3 time slots, 2 time slots, etc.

[0120] In some embodiments of this disclosure, if the second terminal device sharing the COT transmits based on a single timeslot, i.e., the timeslot length is one slot, then only the starting timeslot position where the second terminal device can share the COT can be indicated. Optionally, it can be indicated by a timeslot offset value relative to the starting position of the COT. This disclosure does not limit this.

[0121] For example, if the starting position of COT is solt0, and the time slot offset of the second terminal device relative to solt0 is 3, then the starting time slot position of the second terminal device is solt2.

[0122] In some embodiments of this disclosure, if the second terminal device sharing COT transmits based on multiple time slots, i.e., the time slot length is not 1 slot, then it is necessary to indicate the start position and length of the time domain resources allocated to each second terminal device respectively.

[0123] For example, the total length of the COT time slots is 10 slots. The second terminal devices sharing this COT include second terminal device 1, second terminal device 2, and second terminal device 3. The first terminal device uses slots 0, 1, and 2. The starting time slot allocated to second terminal device 1 is slot 3 with a length of 2; the starting time slot allocated to second terminal device 2 is slot 5 with a length of 3; and the starting time slot allocated to second terminal device 3 is slot 8 with a length of 2. Afterward, each second terminal device can obtain its own time domain resources for information transmission from the COT shared information based on its own ID information.

[0124] In this embodiment of the disclosure, in order for each second terminal device to accurately obtain the time-domain resources and / or frequency-domain resources allocated to it by the first terminal device from the COT shared information, the first terminal device may also include the identity information of each second terminal device in the COT shared information.

[0125] In one implementation, the COT shared information also includes ID information, which may include at least one of the following:

[0126] Layer 1 destination ID or source ID information of the second terminal device;

[0127] The group ID of each second terminal device in the multicast.

[0128] In this embodiment of the disclosure, the ID information included in the COT sharing information is used to indicate the ID information of each second terminal device, that is, to distinguish the identity information of different second terminal devices sharing the same COT.

[0129] The Layer 1 destination ID of the second terminal device can be understood as the physical layer ID of the second terminal device.

[0130] Step 72: Based on time-domain resources and / or frequency-domain resources, access the channel using Type 2 Listen Before Transmit (LBT) method.

[0131] In this embodiment of the disclosure, after the second terminal device obtains the corresponding time-domain resources and / or frequency-domain resources from the COT shared information, it can access the channel using the Type 2 Listen Before Transmit (LBT) method based on the time-domain resources and / or frequency-domain resources, thereby realizing information transmission.

[0132] By implementing the embodiments of this disclosure, the second terminal device receives time-domain resources and / or frequency-domain resources allocated to it by the first terminal device, thereby enabling it to share COT with the first terminal device based on time-domain resources and / or frequency-domain resources. This allows the terminal device to obtain longer communication time, improve LBT success rate, and meet communication service requirements.

[0133] Please see Figure 8 , Figure 8 This is a flowchart illustrating another method for sharing Channel Occupancy Time (COT) according to an embodiment of this disclosure, which is executed by a second terminal device. Figure 8 As shown, the method may include, but is not limited to, the following steps:

[0134] Step 81: Receive COT sharing information sent by the first terminal device, wherein the frequency domain resources allocated by the first terminal device to each second terminal device are the same.

[0135] In this embodiment of the disclosure, the frequency domain resources allocated by the first terminal device to all second terminal devices can be the same, and the starting position and length of the frequency domain resources can be pre-configured. Assume the frequency domain resources are the entire LBT subband.

[0136] In this embodiment of the disclosure, the COT shared information may further include time-domain resources allocated to the second terminal device and ID information. Thus, each second terminal device can obtain the corresponding time-domain resources from the received COT shared information based on its own ID information.

[0137] For example, a first terminal device UE1 initiates a COT (Confirmation of Time) with a length of 4 ms. When the subcarrier is 15 kHz, the COT spans four slots. UE1 uses slot 0 for information transmission and sends COT sharing information in slot 0, instructing a second terminal device with destination ID UE2 to share the COT's time slot 1 (using subchannels 0-4); instructing a second terminal device with destination ID UE3 to share the COT's time slot 2 (using subchannels 3-7); and instructing a second terminal device with destination ID UE4 to share the COT's time slot 3 (using subchannels 3-7). Afterward, each second terminal device can transmit information based on its corresponding time and frequency resources.

[0138] By implementing the embodiments of this disclosure, the second terminal device receives COT sharing information sent by the first terminal device and transmits information based on the COT sharing information, thereby realizing the sharing of COT with the first terminal device, which in turn enables the terminal device to obtain a longer communication time, improves the LBT success rate, and meets the communication service requirements.

[0139] Please see Figure 9 , Figure 9 This is a flowchart illustrating another method for sharing Channel Occupancy Time (COT) according to an embodiment of this disclosure, which is executed by a second terminal device. Figure 9As shown, the method may include, but is not limited to, the following steps:

[0140] Step 91: Receive COT sharing information sent by the first terminal device. The COT sharing information is used to indicate the COT used by the second terminal device.

[0141] Optionally, COT shared information may include at least one of the following:

[0142] The remaining length of the COT;

[0143] COT shared status indication information;

[0144] The shared status indication information of COT is used to indicate whether the information transmission of the current time slot or micro time slot uses COT, or whether the information transmission of the future time slot or micro time slot can use COT. The future time slot refers to the next one or more time slots of the current time slot, and the future micro time slot refers to the next one or more micro time slots of the current micro time slot.

[0145] Optionally, the remaining length of the COT can be indicated by an indicator. The indicator will point to a row in a pre-configured table of remaining COT lengths, which corresponds to the value of the remaining COT length in units of slots or minislots.

[0146] In this embodiment, a 1-bit information segment can be used to represent the sharing status indication information of the COT. For example, "1" indicates that the COT is not interrupted, and the information transmission of the second terminal device in the current time slot or in the future time slot can share the COT, and the second terminal device uses the type 2 LBT access channel. "0" indicates that the COT has been interrupted, and the information transmission of the second terminal device in the current time slot or in the future time slot cannot share the COT, and can only use the type 1 type 1 LBT access channel.

[0147] For example, if the COT sharing information sent by the first terminal device includes the remaining length of the COT, and the first terminal device UE1 initiates a COT with a length of 6 slots, and UE1 uses slot 0 for information transmission, then the remaining length of the sent COT is 5 slots.

[0148] For example, if the COT sharing information sent by the first terminal device includes COT sharing status indication information, and the first terminal device UE1 initiates a COT with a length of 6 slots, UE1 uses slot 0 for its own transmission to send the COT sharing status information, if the information bit is "1", it indicates that the COT has not been interrupted, and the second terminal device UE2 can share the COT and can enable type 2 LBT access channel.

[0149] Step 92: Update the COT shared information.

[0150] Understandably, after receiving the COT sharing information from the first terminal device, the second terminal device can share the COT based on that information. However, after the second device uses the shared COT for information transmission, the COT sharing information will change. Therefore, the second terminal device needs to update the COT sharing information.

[0151] Optionally, if the COT shared information is the remaining length of the COT, the second terminal device can determine the remaining length of the COT based on its own usage of the COT.

[0152] For example, if the first terminal initiates a COT (Content Override) with a length of 6 slots, and the first terminal device UE1 uses slot 0 for information transmission, then the remaining length of the transmitted COT is 5 slots. After receiving the remaining length of the COT sent by the first terminal device, the second terminal device UE2 uses slot 1 for information transmission. Therefore, the terminal device UE2 updates the remaining length of the COT, resulting in a remaining length of 4 slots for the updated COT.

[0153] Optionally, if the COT includes sharing status indication information of the shared information COT, the second terminal device can also determine whether the information transmission of other terminal devices sharing the COT in the current time slot shares the COT, or indicate whether the information transmission in future time slots shares the COT.

[0154] For example, UE1 initiates a six-slot COT (Common Occurrence of the Occurrence) and transmits its own data using slot 0, sending the COT's shared state information with a "1" bit, indicating that the COT is not interrupted. UE2 can then share this COT and transmit data on slot 1. Simultaneously, UE2 can update the COT's shared state information. If the updated information bit is "0", it indicates that the COT is interrupted. Starting from slot 2, other terminal devices cannot use this COT, even if the COT sharing condition is met; they can only use type 1 LBTs to access the channel. If the updated information bit is "1", it indicates that the COT is not interrupted. Starting from slot 2, other terminal devices can use this COT, and they can use type 2 LBTs to access the channel.

[0155] Step 93: Send the updated COT sharing information to the third terminal device.

[0156] Among them, the third terminal device can be a shared COT, but a terminal device that has not yet transmitted information based on the COT.

[0157] It is understood that the second terminal device sends the updated COT sharing information to the third terminal device, thereby enabling the third terminal device to share the COT based on the updated COT sharing information. By implementing the embodiments of this disclosure, the second terminal device can share the COT with the first terminal device through the received COT sharing information, and send the updated COT sharing information to the third terminal device, enabling the third terminal device to share the COT based on the updated COT sharing information. This achieves COT sharing between terminal devices, allowing terminal devices to obtain longer communication times, improving LBT success rates, and meeting communication service requirements.

[0158] In the embodiments provided above, the methods provided by the present disclosure have been described from the perspectives of a first terminal device and a second terminal device, respectively. To implement the functions of the methods provided in the embodiments of the present disclosure, the first terminal device and the second terminal device may include hardware structures and software modules, implementing the above functions in the form of hardware structures, software modules, or a combination of hardware structures and software modules. One of the above functions can be executed in the form of hardware structures, software modules, or a combination of hardware structures and software modules.

[0159] Please see Figure 10 This is a schematic diagram of the structure of a communication device 100 provided in an embodiment of this disclosure. Figure 10 The communication device 100 shown may include a processing module 1001 and a transceiver module 1002.

[0160] The transceiver module 1002 may include a sending module and / or a receiving module. The sending module is used to implement the sending function, and the receiving module is used to implement the receiving function. The transceiver module 1002 can implement both sending and / or receiving functions.

[0161] It is understood that the communication device 100 can be a terminal device, a device in the first terminal device, or a device that can be used in conjunction with the first terminal device.

[0162] Communication device 100, on the side of the first terminal device, the device includes:

[0163] The transceiver module 1002 is used to send COT sharing information to the second terminal device. The COT sharing information is used to indicate the COT used by the second terminal device.

[0164] In one implementation, COT shared information includes time-domain resources and / or frequency-domain resources allocated to the second terminal device.

[0165] In one implementation, the COT sharing information also includes the starting position and length of the frequency domain resources, or the starting time slot position and time slot length of the time domain resources.

[0166] In one implementation, the COT shared information also includes ID information, which includes at least one of the following:

[0167] Layer 1 destination ID or source ID information of the second terminal device;

[0168] The group ID of each second terminal device in the multicast.

[0169] In one implementation, the frequency domain resources allocated to each second terminal device included in the COT shared information are the same.

[0170] In one implementation, the COT shared information includes at least one of the following:

[0171] The remaining length of the COT;

[0172] COT shared status indication information;

[0173] The shared status indication information of COT is used to indicate whether the information transmission of the current time slot or micro-time slot uses COT, or whether the information transmission of future time slots or micro-time slots can use COT.

[0174] The communication device provided in this disclosure allows the first terminal device to send COT sharing information to the second terminal device, enabling the second terminal device to share COT with the first terminal device based on the COT sharing information, thereby allowing the terminal device to obtain a longer communication time, improving the LBT success rate, and meeting the communication service requirements.

[0175] It is understood that the communication device 100 can be a second terminal device, a device within a second terminal device, or a device that can be used in conjunction with a second terminal device.

[0176] Communication device 100, on the second terminal equipment side, the device includes:

[0177] The transceiver module 1002 is used to receive COT sharing information sent by the first terminal device. The COT sharing information is used to indicate the COT used by the second terminal device.

[0178] In one implementation, the COT shared information includes time-domain resources and / or frequency-domain resources allocated by the first terminal device to the second terminal device.

[0179] In one implementation, the COT sharing information also includes the starting position and length of the frequency domain resources, or the starting time slot position and time slot length of the time domain resources.

[0180] In one implementation, the COT shared information also includes ID information, which includes at least one of the following:

[0181] Layer 1 destination ID or source ID information of the second terminal device;

[0182] The group ID of each second terminal device in the multicast.

[0183] In one implementation, the frequency domain resources allocated by the first terminal device to the second terminal device in the COT shared information are the same.

[0184] In one implementation, the processing module 1001 is used to access the channel using the Type 2 Listen Before Transmit (LBT) method based on time-domain resources and / or frequency-domain resources.

[0185] In one implementation, the COT shared information includes at least one of the following:

[0186] The remaining length of the COT;

[0187] COT shared status indication information;

[0188] The shared status indication information of COT is used to indicate whether the information transmission of the current time slot or micro-time slot uses COT, or whether the information transmission of future time slots or micro-time slots can use COT.

[0189] In one implementation, processing module 1001 is used to update COT shared information;

[0190] The transceiver module 1002 is used to send the updated COT shared information to the third terminal device.

[0191] The communication device provided in this disclosure allows the second terminal device to determine the COT it uses by receiving COT sharing information sent by the first terminal device. This enables the second terminal device to share the COT with the first terminal device based on the COT sharing information, thereby allowing the terminal device to obtain a longer communication time, improve the LBT success rate, and meet the communication service requirements.

[0192] Please see Figure 11 , Figure 11This is a schematic diagram of another communication device 110 provided in this embodiment. The communication device 110 can be a first terminal device, a second terminal device, a chip, chip system, or processor that supports the first terminal device in implementing the above methods, or a chip, chip system, or processor that supports the second terminal device in implementing the above methods. This device can be used to implement the methods described in the above method embodiments; for details, please refer to the descriptions in the above method embodiments.

[0193] The communication device 110 may include one or more processors 1101. The processor 1101 may be a general-purpose processor or a dedicated processor, such as a baseband processor or a central processing unit (CPU). The baseband processor can be used to process communication protocols and communication data, while the CPU can be used to control the communication device (e.g., base station, baseband chip, terminal equipment, terminal equipment chip, DU or CU, etc.), execute computer programs, and process data from the computer programs.

[0194] Optionally, the communication device 110 may further include one or more memories 1102, which may store a computer program 1104. The processor 1101 executes the computer program 1104 to cause the communication device 110 to perform the method described in the above method embodiments. Optionally, the memory 1102 may also store data. The communication device 110 and the memory 1102 may be provided separately or integrated together.

[0195] Optionally, the communication device 110 may also include a transceiver 1105 and an antenna 1106. The transceiver 1105 may be referred to as a transceiver unit, transceiver, or transceiver circuit, etc., and is used to implement the transmission and reception functions. The transceiver 1105 may include a receiver and a transmitter. The receiver may be referred to as a receiver or receiving circuit, etc., and is used to implement the receiving function; the transmitter may be referred to as a transmitter or transmitting circuit, etc., and is used to implement the transmitting function.

[0196] Optionally, the communication device 110 may further include one or more interface circuits 1107. The interface circuits 1107 are used to receive code instructions and transmit them to the processor 1101. The processor 1101 executes the code instructions to cause the communication device 110 to perform the methods described in the above method embodiments.

[0197] Communication device 110 is a first terminal device: transceiver 1105 is used to perform... Figure 2 Step 21; Figure 3 Step 31; Figure 4 Step 41 in the middle; or Figure 5 Step 51 in the process.

[0198] Communication device 110 is a second terminal device: processor 1101 is used to execute Figure 7 Step 72; Figure 9 Step 92; transceiver 1105 is used to perform Figure 6 Step 61 in the middle; Figure 7 Step 71 in the middle; Figure 8 Step 81 in the middle; or Figure 9 Steps 91 and 93 in the process.

[0199] In one implementation, the processor 1101 may include a transceiver for implementing receiving and transmitting functions. For example, the transceiver may be a transceiver circuit, an interface, or an interface circuit. The transceiver circuit, interface, or interface circuit for implementing receiving and transmitting functions may be separate or integrated. The aforementioned transceiver circuit, interface, or interface circuit can be used for reading and writing code / data, or it can be used for transmitting or relaying signals.

[0200] In one implementation, processor 1101 may store computer program 1103, which runs on processor 1101 and causes communication device 110 to perform the methods described in the above method embodiments. Computer program 1103 may be embedded in processor 1101, in which case processor 1101 may be implemented in hardware.

[0201] In one implementation, the communication device 110 may include circuitry capable of performing the functions of transmitting, receiving, or communicating as described in the foregoing method embodiments. The processor and transceiver described in this disclosure can be implemented on integrated circuits (ICs), analog ICs, radio frequency integrated circuits (RFICs), mixed-signal ICs, application-specific integrated circuits (ASICs), printed circuit boards (PCBs), electronic devices, etc. The processor and transceiver can also be manufactured using various IC process technologies, such as complementary metal-oxide-semiconductor (CMOS), n-metal-oxide-semiconductor (NMOS), positive-channel metal-oxide-semiconductor (PMOS), bipolar junction transistors (BJTs), bipolar CMOS (BiCMOS), silicon-germanium (SiGe), gallium arsenide (GaAs), etc.

[0202] The communication device described in the above embodiments may be a network device or a terminal device, but the scope of the communication device described in this disclosure is not limited thereto, and the structure of the communication device may vary. Figure 11 The communication device may be a standalone device or part of a larger device. For example, the communication device may be:

[0203] (1) Independent integrated circuit IC, or chip, or chip system or subsystem;

[0204] (2) A collection of one or more ICs, optionally including storage components for storing data and computer programs;

[0205] (3) ASIC, such as modem;

[0206] (4) Modules that can be embedded in other devices;

[0207] (5) Receivers, terminal equipment, smart terminal equipment, cellular phones, wireless equipment, handheld devices, mobile units, vehicle-mounted equipment, network equipment, cloud equipment, artificial intelligence equipment, etc.

[0208] (6) Others, etc.

[0209] For cases where the communication device can be a chip or a chip system, please refer to [link / reference]. Figure 12 The diagram shows the structure of the chip. Figure 12 The chip 120 shown includes a processor 1201 and an interface 1202. The number of processors 1201 can be one or more, and the number of interfaces 1202 can be multiple.

[0210] Regarding the case where the chip is used to implement the functions of the terminal device in the embodiments of this disclosure:

[0211] Interface 1202 is used for execution Figure 2 Step 21; Figure 3 Step 31; Figure 4 Step 41 in the middle; or Figure 5 Step 51 in the process.

[0212] For cases where the chip is used to implement the functions of the network device in the embodiments of this disclosure:

[0213] Processor 1201 and processor 1101 are used to execute Figure 7 Step 72; Figure 9 Step 92 in the process.

[0214] Interface 1202 is used for execution Figure 6 Step 61 in the middle; Figure 7 Step 71 in the middle; Figure 8Step 81 in the middle; or Figure 9 Steps 91 and 93 in the process.

[0215] Optionally, the chip also includes a memory 1203 for storing necessary computer programs and data.

[0216] Those skilled in the art will also understand that the various illustrative logical blocks and steps listed in the embodiments of this disclosure can be implemented by electronic hardware, computer software, or a combination of both. Whether such functionality is implemented in hardware or software depends on the specific application and the overall system design requirements. Those skilled in the art can implement the described functionality using various methods for each specific application, but such implementation should not be construed as exceeding the scope of protection of the embodiments of this disclosure.

[0217] This disclosure also provides a communication system, which includes the aforementioned... Figure 11 In the embodiments, there are communication devices serving as a first terminal device and communication devices serving as a second terminal device; alternatively, the system may include the aforementioned... Figure 12 The embodiments include a communication device as a first terminal device and a communication device as a second terminal device.

[0218] This disclosure also provides a computer-readable storage medium having instructions stored thereon that, when executed by a computer, implement the functions of any of the above method embodiments.

[0219] This disclosure also provides a computer program product that, when executed by a computer, implements the functions of any of the above method embodiments.

[0220] In the above embodiments, implementation can be achieved, in whole or in part, through software, hardware, firmware, or any combination thereof. When implemented in software, it can be implemented, in whole or in part, as a computer program product. The computer program product includes one or more computer programs. When the computer program is loaded and executed on a computer, all or part of the processes or functions described in the embodiments of this disclosure are generated. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer program can be stored in a computer-readable storage medium or transferred from one computer-readable storage medium to another. For example, the computer program can be transferred from one website, computer, server, or data center to another via wired (e.g., coaxial cable, fiber optic, digital subscriber line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) means. The computer-readable storage medium can be any available medium accessible to a computer or a data storage device such as a server or data center that integrates one or more available media. The available media may be magnetic media (e.g., floppy disks, hard disks, magnetic tapes), optical media (e.g., high-density digital video discs (DVDs)), or semiconductor media (e.g., solid-state disks (SSDs)).

[0221] Those skilled in the art will understand that the various numerical designations such as "first," "second," etc., used in this disclosure are merely for the convenience of description and are not intended to limit the scope of the embodiments of this disclosure, nor do they indicate the order of events.

[0222] At least one of the features described in this disclosure can also be described as one or more, and multiple features can be two, three, four or more, and this disclosure does not impose any limitations. In the embodiments of this disclosure, for a technical feature, the technical features in that technical feature are distinguished by "first", "second", "third", "A", "B", "C" and "D", etc., and there is no sequential order or size order among the technical features described by "first", "second", "third", "A", "B", "C" and "D".

[0223] It should be understood that although the terms first, second, third, etc., may be used to describe various information in the embodiments of this application, such information should not be limited to these terms. These terms are only used to distinguish information of the same type from each other. For example, without departing from the scope of the embodiments of this application, first information may also be referred to as second information, and similarly, second information may also be referred to as first information. The words "if" and "suppose" as used herein can be interpreted as "when," "when," "in response to a determination," or "in the circumstances."

[0224] The correspondences shown in the tables of this disclosure can be configured or predefined. The values ​​of the information in each table are merely examples and can be configured to other values; this disclosure is not limiting. When configuring the correspondences between information and parameters, it is not necessarily required to configure all the correspondences shown in each table. For example, the correspondences shown in some rows of the tables in this disclosure may not be configured. Furthermore, appropriate modifications and adjustments can be made based on the above tables, such as splitting, merging, etc. The names of the parameters shown in the headers of the above tables can also use other names that the communication device can understand, and the values ​​or representations of the parameters can also be other values ​​or representations that the communication device can understand. In the implementation of the above tables, other data structures can also be used, such as arrays, queues, containers, stacks, linear lists, pointers, linked lists, trees, graphs, structures, classes, heaps, hash tables, or hash tables, etc.

[0225] The predefined terms in this disclosure can be understood as defined, predefined, stored, pre-stored, pre-negotiated, pre-configured, solidified, or pre-burned.

[0226] Those skilled in the art will recognize that the units and algorithm steps of the various examples described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are implemented in hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this disclosure.

[0227] It is further understood that although operations are described in a specific order in the accompanying drawings in the embodiments of this disclosure, this should not be construed as requiring these operations to be performed in the specific order or serial order shown, or requiring all of the shown operations to be performed to obtain the desired result. In certain environments, multitasking and parallel processing may be advantageous.

[0228] Other embodiments of this disclosure will readily occur to those skilled in the art upon consideration of the specification and practice of the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of this disclosure that follow the general principles of this disclosure and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only, and the true scope and spirit of this disclosure are indicated by the following claims.

[0229] Those skilled in the art will understand that, for the sake of convenience and brevity, the specific working processes of the systems, devices, and units described above can be referred to the corresponding processes in the foregoing method embodiments, and will not be repeated here.

[0230] The above description is merely a specific embodiment of this disclosure, but the scope of protection of this disclosure is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this disclosure should be included within the scope of protection of this disclosure. Therefore, the scope of protection of this disclosure should be determined by the scope of the claims.

Claims

1. A method for sharing Channel Occupancy Time (COT), characterized in that, The method is executed by a first terminal device, which is used to initiate COT (Content-Oriented Therapy), and the method includes: Send COT sharing information to the second terminal device, wherein the COT sharing information is used to indicate the COT used by the second terminal device; The COT shared information includes: The shared status indication information of the COT; The shared status indication information of the COT is used to indicate whether the information transmission of the current time slot or micro time slot uses the COT, or whether the information transmission of future time slots or micro time slots can use the COT. Wherein, when the shared status indication information of the COT takes the first value, it means that the COT is not interrupted, and the information transmission of the current time slot or the information transmission of the future time slot of the second terminal device can share the COT, and the second terminal device uses the type 2 Listen Before Transmit (LBT) mode to access the channel; When the shared status indication information of the COT takes the second value, it indicates that the COT is interrupted. The information transmission of the current time slot or the information transmission of the future time slot of the second terminal device cannot share the COT. The second terminal device uses the type 1 LBT method to access the channel.

2. The method as described in claim 1, characterized in that, The COT shared information includes time-domain resources and / or frequency-domain resources allocated to the second terminal device.

3. The method as described in claim 2, characterized in that, The COT shared information also includes the starting position and length of the frequency domain resource, or the starting time slot position and time slot length of the time domain resource.

4. The method as described in claim 2, characterized in that, The COT shared information also includes ID information, which includes at least one of the following: The Layer 1 destination ID or source ID information of the second terminal device; The group ID of each second terminal device in the multicast.

5. The method as described in claim 2, characterized in that, The frequency domain resources allocated to each second terminal device in the COT shared information are the same.

6. The method as described in claim 1, characterized in that, The COT shared information also includes: The remaining length of the COT.

7. A method for sharing Channel Occupancy Time (COT), characterized in that, The method is executed by a second terminal device, and the method includes: Receive COT sharing information sent by the first terminal device, wherein the COT sharing information is used to indicate the COT used by the second terminal device; The COT shared information includes: The shared status indication information of the COT; The shared status indication information of the COT is used to indicate whether the information transmission of the current time slot or micro time slot uses the COT, or whether the information transmission of future time slots or micro time slots can use the COT. Wherein, when the shared status indication information of the COT takes the first value, it means that the COT is not interrupted, and the information transmission of the current time slot or the information transmission of the future time slot of the second terminal device can share the COT, and the second terminal device uses the type 2 Listen Before Transmit (LBT) mode to access the channel; When the shared status indication information of the COT takes the second value, it indicates that the COT is interrupted. The information transmission of the current time slot or the information transmission of the future time slot of the second terminal device cannot share the COT. The second terminal device uses the type 1 LBT method to access the channel.

8. The method as described in claim 7, characterized in that, The COT shared information includes time-domain resources and / or frequency-domain resources allocated by the first terminal device to the second terminal device.

9. The method as described in claim 8, characterized in that, The COT shared information also includes the starting position and length of the frequency domain resource, or the starting time slot position and time slot length of the time domain resource.

10. The method as described in claim 8, characterized in that, The COT shared information also includes ID information, which includes at least one of the following: The Layer 1 destination ID or source ID information of the second terminal device; The group ID of each of the second terminal devices in the multicast.

11. The method as described in claim 8, characterized in that, The frequency domain resources allocated to each second terminal device by the first terminal device included in the COT shared information are the same.

12. The method as described in any one of claims 8-11, characterized in that, After receiving the COT sharing information sent by the first terminal device, it also includes: Based on the aforementioned time-domain and / or frequency-domain resources, the channel is accessed using the Type 2 Listen Before Transmit (LBT) method.

13. The method as described in claim 7, characterized in that, The COT shared information also includes: The remaining length of the COT.

14. The method as described in claim 13, characterized in that, After receiving the COT sharing information sent by the first terminal device, the method further includes: Update the COT shared information; The updated COT shared information is sent to the third terminal device.

15. A first terminal device, comprising: The transceiver module is used to send COT sharing information to the second terminal device, wherein the COT sharing information is used to indicate the COT used by the second terminal device; The COT shared information includes: The shared status indication information of the COT; The shared status indication information of the COT is used to indicate whether the information transmission of the current time slot or micro time slot uses the COT, or whether the information transmission of future time slots or micro time slots can use the COT. Wherein, when the shared status indication information of the COT takes the first value, it means that the COT is not interrupted, and the information transmission of the current time slot or the information transmission of the future time slot of the second terminal device can share the COT, and the second terminal device uses the type 2 Listen Before Transmit (LBT) mode to access the channel; When the shared status indication information of the COT takes the second value, it indicates that the COT is interrupted. The information transmission of the current time slot or the information transmission of the future time slot of the second terminal device cannot share the COT. The second terminal device uses the type 1 LBT method to access the channel.

16. A second terminal device, comprising: The transceiver module is used to receive COT sharing information sent by the first terminal device, wherein the COT sharing information is used to indicate the COT used by the second terminal device; The COT shared information includes: The shared status indication information of the COT; The shared status indication information of the COT is used to indicate whether the information transmission of the current time slot or micro time slot uses the COT, or whether the information transmission of future time slots or micro time slots can use the COT. Wherein, when the shared status indication information of the COT takes the first value, it means that the COT is not interrupted, and the information transmission of the current time slot or the information transmission of the future time slot of the second terminal device can share the COT, and the second terminal device uses the type 2 Listen Before Transmit (LBT) mode to access the channel; When the shared status indication information of the COT takes the second value, it indicates that the COT is interrupted. The information transmission of the current time slot or the information transmission of the future time slot of the second terminal device cannot share the COT. The second terminal device uses the type 1 LBT method to access the channel.

17. A communication device, characterized in that, The device includes a processor and a memory, the memory storing a computer program, the processor executing the computer program stored in the memory to cause the device to perform the method as claimed in any one of claims 1 to 6, or to perform the method as claimed in any one of claims 7 to 14.

18. A communication system, characterized in that, The communication system includes a first terminal device and a second terminal device, wherein the first terminal device performs the method as described in any one of claims 1-6, and the second terminal device performs the method as described in any one of claims 7-14.

19. A computer-readable storage medium for storing instructions that, when executed, cause the method of any one of claims 1 to 6 to be implemented, or cause the method of any one of claims 7 to 14 to be implemented.

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