Channel detection method, apparatus, communication device, communication system, and storage medium

Abstract

The present application provides a channel detection method, an apparatus, a device, and a storage medium. The method comprises: a first device determines at least one target channel access mechanism; on the basis of the target channel access mechanism, the first device performs channel detection on a spectrum resource corresponding to a reference signal, wherein the spectrum resource corresponding to the reference signal is a shared spectrum resource. The present application provides a channel detection method for a shared spectrum resource, for use in achieving successful detection of a shared spectrum resource, and further achieving successful transmission of a reference signal on the shared spectrum resource, thereby ensuring the accuracy of related services. For example, when the reference signal is a reference signal for positioning, successful transmission of the reference signal on a shared spectrum resource can improve the measurement accuracy of the reference signal for positioning, thereby improving the positioning accuracy.

Description

Channel detection method and device, communication equipment, communication system, and storage medium Technical Field

[0001] The present disclosure relates to the field of communication technology, and in particular to a channel detection method and apparatus, communication equipment, a communication system, and a storage medium. Background Art

[0002] In communication systems, it is usually necessary to transmit a positioning reference signal for performing positioning measurements.

[0003] Summary of the Invention

[0004] The present disclosure provides a channel detection method and apparatus, communication equipment, a communication system, and a storage medium.

[0005] According to a first aspect of an embodiment of the present disclosure, a channel detection method is proposed, including: a first device determines at least one target channel access mechanism; the first device performs channel detection on the spectrum resources corresponding to a reference signal based on the target channel access mechanism; wherein the spectrum resources corresponding to the reference signal are shared spectrum resources.

[0006] According to the second aspect of an embodiment of the present disclosure, a channel detection method is proposed, including: a third device sends indication information to a first device, wherein the indication information is used to determine at least one target channel access mechanism; the target channel access mechanism is used to perform channel detection on the spectrum resources corresponding to a reference signal; wherein the spectrum resources corresponding to the reference signal are shared spectrum resources.

[0007] According to a third aspect of an embodiment of the present disclosure, a channel detection method is proposed, which is applied to a communication system, wherein the communication system includes a first device and a third device, and the method includes at least one of the following: the third device sends indication information to the first device, and the indication information is used to determine at least one target channel access mechanism; the target channel access mechanism is used to perform channel detection on the spectrum resources corresponding to the reference signal; wherein the spectrum resources corresponding to the reference signal are shared spectrum resources; the first device determines at least one target channel access mechanism; the first device performs channel detection on the spectrum resources corresponding to the reference signal based on the target channel access mechanism; wherein the spectrum resources corresponding to the reference signal are shared spectrum resources; the first device sends a reference signal on a first channel, and the first channel includes a channel successfully accessed by the first device through the target channel access mechanism.

[0008] According to the fourth aspect of an embodiment of the present disclosure, a first device is proposed, comprising: a processing module for determining at least one target channel access mechanism; the processing module is also used for the target channel access mechanism to perform channel detection on the spectrum resources corresponding to a reference signal; wherein the spectrum resources corresponding to the reference signal are shared spectrum resources.

[0009] According to the fifth aspect of an embodiment of the present disclosure, a third device is proposed, including: a sending module for sending indication information to a first device, wherein the indication information is used to determine at least one target channel access mechanism; the target channel access mechanism is used to perform channel detection on the spectrum resources corresponding to the reference signal; wherein the spectrum resources corresponding to the reference signal are shared spectrum resources.

[0010] According to the sixth aspect of an embodiment of the present disclosure, a communication device is proposed, comprising: one or more processors; wherein the processor is used to call instructions so that the communication device executes the channel detection method described in any one of the first aspect and the second aspect.

[0011] According to the seventh aspect of an embodiment of the present disclosure, a communication system is proposed, characterized in that it includes a first device and a third device, wherein the terminal is configured to implement the channel detection method described in the first aspect, and the first device is configured to implement the channel detection method described in the second aspect.

[0012] According to an eighth aspect of an embodiment of the present disclosure, a storage medium is proposed, which stores instructions, and is characterized in that when the instructions are executed on a communication device, the communication device executes the channel detection method as described in any one of the first and second aspects. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The above and / or additional aspects and advantages of the present disclosure will become apparent and readily understood from the following description of the embodiments in conjunction with the accompanying drawings, in which:

[0014] FIG1 is a schematic diagram of the architecture of some communication systems provided by embodiments of the present disclosure;

[0015] FIG2A is an interactive diagram of a channel detection method provided by an embodiment of the present disclosure;

[0016] 3A-3B are flowcharts of a channel detection method provided in yet another embodiment of the present disclosure;

[0017] FIG4A is a flow chart of a channel detection method provided in yet another embodiment of the present disclosure;

[0018] FIG5 is a flow chart of a channel detection method provided in yet another embodiment of the present disclosure;

[0019] FIG6A is a schematic structural diagram of a first device provided by an embodiment of the present disclosure;

[0020] FIG6B is a schematic structural diagram of a third device provided by an embodiment of the present disclosure;

[0021] FIG7A is a schematic structural diagram of a communication device provided by an embodiment of the present disclosure;

[0022] FIG7B is a schematic structural diagram of a chip provided by an embodiment of the present disclosure. DETAILED DESCRIPTION

[0023] The embodiments of the present disclosure provide a channel detection method and apparatus, a communication device, a communication system, and a storage medium.

[0024] In a first aspect, an embodiment of the present disclosure provides a channel detection method, which is performed by a first device. The method includes:

[0025] The first device determines at least one target channel access mechanism;

[0026] The first device performs channel detection on the spectrum resources corresponding to the reference signal based on the target channel access mechanism; wherein the spectrum resources corresponding to the reference signal are shared spectrum resources.

[0027] In the above embodiment, the first device determines at least one target channel access mechanism for performing channel detection on the shared spectrum resource corresponding to the reference signal, so that when the channel is detected to be idle, the reference signal is sent on the idle resource, thereby achieving successful transmission of the reference signal on the shared spectrum resource. It can be seen that the present disclosure provides a channel detection method for shared spectrum resources, which is used to achieve successful detection of shared spectrum resources, thereby achieving successful transmission of reference signals on shared spectrum resources, and ensuring the accuracy of related services. For example, when the reference signal is a reference signal for positioning purposes, the successful transmission of the reference signal on the shared spectrum resource can improve the measurement accuracy of the reference signal for positioning purposes, thereby improving positioning accuracy.

[0028] In conjunction with some embodiments of the first aspect, in some embodiments, the target channel access mechanism includes a first type of channel access mechanism, a second type of channel access mechanism, or a third type of channel access mechanism;

[0029] Among them, the time required for channel detection of the first type of channel access mechanism is greater than or equal to the time required for channel detection of the second type of channel access mechanism, and the time required for channel detection of the second type of channel access mechanism is greater than the time required for channel detection of the third type of channel access mechanism.

[0030] In the above embodiment, one or more channel access mechanisms with different channel detection time lengths are provided, so that at least one target channel access mechanism for performing channel detection on shared spectrum resources is selected from the one or more channel access mechanisms, thereby achieving successful channel detection on shared spectrum resources.

[0031] In conjunction with some embodiments of the first aspect, in some embodiments, the method further includes:

[0032] The first device determines a spectrum resource corresponding to the reference signal.

[0033] In conjunction with some embodiments of the first aspect, in some embodiments, the method further includes:

[0034] The first device determines at least one bandwidth unit included in the spectrum resources.

[0035] In conjunction with some embodiments of the first aspect, in some embodiments, the spectrum resource includes at least two bandwidth units, the target channel access mechanism is one, and the one target channel access mechanism is used for the at least two bandwidth units;

[0036] The spectrum resources include one bandwidth unit, the number of the target channel access mechanism is one, and the one target channel access mechanism is used for the one bandwidth unit.

[0037] In the above embodiment, when determining the target channel access mechanism, the first device may determine the same target channel access mechanism for different bandwidth units, or may determine a target channel access mechanism for the entire spectrum resource, thereby defining a method for determining the target channel access mechanism to ensure that the first device can successfully detect the shared spectrum resource based on the determined target channel access mechanism. Moreover, in the above embodiment, the method of "determining a target channel access mechanism for the entire spectrum resource" can also ensure that the bandwidth that is ultimately successfully detected (such as LBT success) is as wide and continuous as possible, thereby ensuring the subsequent transmission efficiency of the reference signal and improving the accuracy of related services.

[0038] In conjunction with some embodiments of the first aspect, in some embodiments, determining at least one target channel access mechanism includes:

[0039] A target channel access mechanism is determined based on the period of the reference signal.

[0040] In conjunction with some embodiments of the first aspect, in some embodiments, determining a target channel access mechanism based on the period of the reference signal includes at least one of the following:

[0041] The first type of channel access mechanism is determined as the target channel access mechanism, and the period of the reference signal is less than or equal to a first value; or, the second type of channel access mechanism is determined as the target channel access mechanism, and the period of the reference signal is greater than the first value.

[0042] In the above embodiment, when the first device determines the target channel access mechanism, it is determined based on the period of the reference signal, wherein the period of the reference signal is inversely proportional to the time required for channel detection of the target access mechanism, that is, a more relaxed channel access mechanism is used for reference signals with a long period, thereby increasing the probability of idle detection and ensuring the success rate of channel access.

[0043] In conjunction with some embodiments of the first aspect, in some embodiments, determining at least one target channel access mechanism includes:

[0044] The spectrum resources include at least two bandwidth units, and at least two target channel access mechanisms are determined; the at least two target channel access mechanisms are used for different bandwidth units.

[0045] In combination with some embodiments of the first aspect, in some embodiments, there are two target channel access mechanisms, and the channel detection time required for the two target channel access mechanisms is different. The target channel access mechanism with the longest channel detection time among the two target channel access mechanisms is used for the first bandwidth unit, and the target channel access mechanism with the shortest channel detection time among the two target channel access mechanisms is used for the second bandwidth unit. The target channel access mechanism with the longest channel detection time among the two target channel access mechanisms is also used for the third bandwidth unit; wherein, the first bandwidth unit is any one of the at least one bandwidth unit, the second bandwidth unit is a bandwidth unit adjacent to the first bandwidth unit, and the third bandwidth unit is a bandwidth unit other than the first bandwidth unit and the second bandwidth unit;

[0046] There are two target channel access mechanisms, and the channel detection time required for the two target channel access mechanisms is different. The target channel access mechanism with the longest channel detection time among the two target channel access mechanisms is used for the first bandwidth unit, and the target channel access mechanism with the shortest channel detection time among the two target channel access mechanisms is used for the second bandwidth unit; wherein the first bandwidth unit is any one of the at least one bandwidth unit, and the second bandwidth unit is a bandwidth unit other than the first bandwidth unit;

[0047] There are three target channel access mechanisms, and the channel detection time required for the three target channel access mechanisms is different. The target channel access mechanism with the longest channel detection time among the three target channel access mechanisms is used for the first bandwidth unit, the target channel access mechanism with the shortest channel detection time among the three target channel access mechanisms is used for the second bandwidth unit, and the target channel access mechanism with a channel detection time between the shortest and the longest among the three target channel access mechanisms is used for the third bandwidth unit; wherein, the first bandwidth unit is any one of the at least one bandwidth unit, the second bandwidth unit is a bandwidth unit adjacent to the first bandwidth unit, and the third bandwidth unit is a bandwidth unit other than the first bandwidth unit and the second bandwidth unit.

[0048] In the above embodiment, a method for determining a target channel access mechanism is defined, wherein the first device can determine at least two target channel access mechanisms to use the at least two target channel access mechanisms to perform channel detection on different bandwidth units in the spectrum resources, thereby ensuring that the first device can successfully determine the target channel access mechanism for performing channel detection on the shared spectrum resources, and ensure successful channel detection of the shared spectrum resources. In addition, in the above embodiment, when the first device determines at least two target channel access mechanisms, the time required for channel detection of different target channel access mechanisms will be different, and the target channel access mechanism with the longest channel detection time will be used for the first bandwidth unit, and the target channel access mechanism with the shortest channel detection time will be used for the second bandwidth unit adjacent to the first bandwidth unit, thereby ensuring that the bandwidth that is finally successfully detected (such as LBT success) is as wide and continuous as possible, ensuring the subsequent transmission efficiency of the reference signal, and improving the accuracy of related services.

[0049] In conjunction with some embodiments of the first aspect, in some embodiments, the second device initiates channel sharing with the first device, and determining at least one target channel access mechanism includes at least one of the following:

[0050] The first time interval is less than the second value, and the time domain length occupied by the reference signal is less than or equal to N symbols, where N is a positive integer, and the third type of channel access mechanism is determined as the target channel access mechanism; wherein the first time interval is: the time interval between the time when the first device sends the reference signal and the time when the first device receives the transmission of the second device;

[0051] The first time interval is greater than or equal to the second value and less than the third value, and the second type of channel access mechanism is determined as the target channel access mechanism;

[0052] The first time interval is greater than or equal to a third value, and the first type of channel access mechanism is determined as the target channel access mechanism.

[0053] In the above embodiment, when the second device initiates channel sharing to the first device, the first device can determine the target channel access mechanism based on the time interval between the time when the first device sends the reference signal and the time when the first device receives the transmission from the second device, wherein the smaller the time interval, the shorter the time required for channel detection of the determined target channel access mechanism (that is, the smaller the time interval, the looser the detection strength of the target channel access mechanism adopted), thereby improving the success rate of channel detection.

[0054] In conjunction with some embodiments of the first aspect, in some embodiments, the first type of channel access mechanism is channel detection based on a contention window CW;

[0055] The second type of channel access mechanism is single channel detection;

[0056] The third type of channel access mechanism is not to perform channel detection.

[0057] In conjunction with some embodiments of the first aspect, in some embodiments, the second type of channel access mechanism includes at least one of a first channel access mechanism and a second channel access mechanism;

[0058] The first channel access mechanism includes: detecting that the channel is idle within a first time period, deeming the detection successful;

[0059] The second channel access mechanism includes: detecting that the channel is idle within a second time period, deeming the detection successful;

[0060] The first duration is greater than the second duration.

[0061] In conjunction with some embodiments of the first aspect, in some embodiments, the reference signal includes at least one of the following: a positioning reference signal PRS;

[0062] Sounding Reference Signal SRS used for positioning; Sidelink SL PRS; SL SRS used for positioning.

[0063] In conjunction with some embodiments of the first aspect, in some embodiments, determining at least one target channel access mechanism includes:

[0064] Indication information sent by a third device is received, where the indication information is used to determine at least one target channel access mechanism.

[0065] In a second aspect, an embodiment of the present disclosure provides a channel detection method, which is performed by a first device and includes:

[0066] The third device sends indication information to the first device, where the indication information is used to determine at least one target channel access mechanism; the target channel access mechanism is used to perform channel detection on the spectrum resources corresponding to the reference signal; wherein the spectrum resources corresponding to the reference signal are shared spectrum resources.

[0067] In the above embodiment, the third device sends indication information to the first device, and the indication information is used to determine at least one target channel access mechanism, and the target channel access mechanism is used to perform channel detection on the shared spectrum resource corresponding to the reference signal, so that when the channel is detected to be idle, the reference signal is sent on the idle resource, thereby achieving successful transmission of the reference signal on the shared spectrum resource. It can be seen that the present disclosure provides a channel detection method for shared spectrum resources, which is used to achieve successful detection of shared spectrum resources, and then achieve successful transmission of reference signals on shared spectrum resources, thereby ensuring the accuracy of related services. For example, when the reference signal is a reference signal for positioning purposes, the successful transmission of the reference signal on the shared spectrum resource can improve the measurement accuracy of the reference signal for positioning purposes, thereby improving positioning accuracy.

[0068] In conjunction with some embodiments of the second aspect, in some embodiments, the target channel access mechanism includes a first type of channel access mechanism, a second type of channel access mechanism, or a third type of channel access mechanism;

[0069] Among them, the time required for channel detection of the first type of channel access mechanism is greater than or equal to the time required for channel detection of the second type of channel access mechanism, and the time required for channel detection of the second type of channel access mechanism is greater than the time required for channel detection of the third type of channel access mechanism.

[0070] In conjunction with some embodiments of the second aspect, in some embodiments, the indication information is used to determine at least one target channel access mechanism, including any one of the following:

[0071] The spectrum resource includes at least two bandwidth units, and the indication information is used to determine a target channel access mechanism, and the target channel access mechanism is used for the at least two bandwidth units;

[0072] The spectrum resources include a bandwidth unit, the indication information is used to determine a target channel access mechanism, and the target channel access mechanism is used for the bandwidth unit.

[0073] In conjunction with some embodiments of the second aspect, in some embodiments, the indication information is used to determine at least one target channel access mechanism, including:

[0074] The spectrum resources include at least two bandwidth units, and the indication information is used to determine at least two target channel access mechanisms; the at least two target channel access mechanisms are used for different bandwidth units.

[0075] In conjunction with some embodiments of the second aspect, in some embodiments, the indication information is used to determine at least two target channel access mechanisms, including at least one of the following:

[0076] The indication information is used to determine two target channel access mechanisms, where the two target channel access mechanisms have different channel detection time requirements, the target channel access mechanism with the longest channel detection time among the two target channel access mechanisms is used for the first bandwidth unit, the target channel access mechanism with the shortest channel detection time among the two target channel access mechanisms is used for the second bandwidth unit, and the target channel access mechanism with the longest channel detection time among the two target channel access mechanisms is also used for the third bandwidth unit; wherein, the first bandwidth unit is any one of the at least one bandwidth unit, the second bandwidth unit is a bandwidth unit adjacent to the first bandwidth unit, and the third bandwidth unit is a bandwidth unit other than the first bandwidth unit and the second bandwidth unit;

[0077] The indication information is used to determine two target channel access mechanisms, where the two target channel access mechanisms have different channel detection time durations, the target channel access mechanism with the longest channel detection time duration among the two target channel access mechanisms is used for a first bandwidth unit, and the target channel access mechanism with the shortest channel detection time duration among the two target channel access mechanisms is used for a second bandwidth unit; wherein the first bandwidth unit is any one of the at least one bandwidth unit, and the second bandwidth unit is a bandwidth unit other than the first bandwidth unit;

[0078] The indication information is used to determine three target channel access mechanisms, and the channel detection time required for the three target channel access mechanisms is different. The target channel access mechanism with the longest channel detection time among the three target channel access mechanisms is used for the first bandwidth unit, the target channel access mechanism with the shortest channel detection time among the three target channel access mechanisms is used for the second bandwidth unit, and the target channel access mechanism with the channel detection time between the shortest and the longest among the three target channel access mechanisms is used for the third bandwidth unit; wherein, the first bandwidth unit is any one of the at least one bandwidth unit, the second bandwidth unit is a bandwidth unit adjacent to the first bandwidth unit, and the third bandwidth unit is a bandwidth unit other than the first bandwidth unit and the second bandwidth unit.

[0079] In conjunction with some embodiments of the second aspect, in some embodiments, the first type of channel access mechanism is CW-based channel detection;

[0080] The second type of channel access mechanism is single channel detection;

[0081] The third type of channel access mechanism is not to perform channel detection.

[0082] In conjunction with some embodiments of the second aspect, in some embodiments, the second type of channel access mechanism includes at least one of a first channel access mechanism and a second channel access mechanism;

[0083] The first channel access mechanism includes: detecting that the channel is idle within a first time period, deeming the detection successful;

[0084] The second channel access mechanism includes: detecting that the channel is idle within a second time period, deeming the detection successful;

[0085] The first duration is greater than the second duration.

[0086] In combination with some embodiments of the second aspect, in some embodiments, the reference signal includes at least one of the following: PRS; SRS for positioning; SL PRS; SL SRS for positioning.

[0087] In a third aspect, an embodiment of the present disclosure provides a channel detection method, which is applied to a communication system, wherein the communication system includes a first device and a third device, and the method includes at least one of the following:

[0088] The third device sends at least one target channel access mechanism to the first device; the target channel access mechanism is used to perform channel detection on the spectrum resource corresponding to the reference signal; wherein the spectrum resource corresponding to the reference signal is a shared spectrum resource;

[0089] The first device determines at least one target channel access mechanism;

[0090] The first device performs channel detection on a spectrum resource corresponding to a reference signal based on the target channel access mechanism; wherein the spectrum resource corresponding to the reference signal is a shared spectrum resource;

[0091] The first device sends a reference signal on a first channel, where the first channel includes a channel successfully accessed by the first device through the target channel access mechanism.

[0092] In a fourth aspect, an embodiment of the present disclosure provides a first device, including:

[0093] a processing module, configured to determine at least one target channel access mechanism;

[0094] The processing module is further configured to perform channel detection on the spectrum resources corresponding to the reference signal by the target channel access mechanism; wherein the spectrum resources corresponding to the reference signal are shared spectrum resources.

[0095] In conjunction with some embodiments of the fourth aspect, in some embodiments, the target channel access mechanism includes a first type channel access mechanism, a second type channel access mechanism, or a third type channel access mechanism;

[0096] Among them, the time required for channel detection of the first type of channel access mechanism is greater than or equal to the time required for channel detection of the second type of channel access mechanism, and the time required for channel detection of the second type of channel access mechanism is greater than the time required for channel detection of the third type of channel access mechanism.

[0097] In conjunction with some embodiments of the fourth aspect, in some embodiments, the device is further used to:

[0098] The first device determines a spectrum resource corresponding to the reference signal.

[0099] In conjunction with some embodiments of the fourth aspect, in some embodiments, the device is further used to:

[0100] The first device determines at least one bandwidth unit included in the spectrum resources.

[0101] In conjunction with some embodiments of the fourth aspect, in some embodiments, the spectrum resource includes at least two bandwidth units, the target channel access mechanism is one, and the one target channel access mechanism is used for the at least two bandwidth units;

[0102] The spectrum resources include one bandwidth unit, the number of the target channel access mechanism is one, and the one target channel access mechanism is used for the one bandwidth unit.

[0103] In conjunction with some embodiments of the fourth aspect, in some embodiments, the processing module is further configured to:

[0104] A target channel access mechanism is determined based on the period of the reference signal.

[0105] In conjunction with some embodiments of the fourth aspect, in some embodiments, the processing module is further configured to:

[0106] The first type of channel access mechanism is determined as the target channel access mechanism, and the period of the reference signal is less than or equal to a first value; or, the second type of channel access mechanism is determined as the target channel access mechanism, and the period of the reference signal is greater than the first value.

[0107] In conjunction with some embodiments of the fourth aspect, in some embodiments, the processing module is further configured to:

[0108] The spectrum resources include at least two bandwidth units, and at least two target channel access mechanisms are determined; the at least two target channel access mechanisms are used for different bandwidth units.

[0109] In combination with some embodiments of the fourth aspect, in some embodiments, there are two target channel access mechanisms, and the channel detection time required for the two target channel access mechanisms is different. The target channel access mechanism with the longest channel detection time among the two target channel access mechanisms is used for the first bandwidth unit, and the target channel access mechanism with the shortest channel detection time among the two target channel access mechanisms is used for the second bandwidth unit. The target channel access mechanism with the longest channel detection time among the two target channel access mechanisms is also used for the third bandwidth unit; wherein, the first bandwidth unit is any one of the at least one bandwidth unit, the second bandwidth unit is a bandwidth unit adjacent to the first bandwidth unit, and the third bandwidth unit is a bandwidth unit other than the first bandwidth unit and the second bandwidth unit;

[0110] There are two target channel access mechanisms, and the channel detection time required for the two target channel access mechanisms is different. The target channel access mechanism with the longest channel detection time among the two target channel access mechanisms is used for the first bandwidth unit, and the target channel access mechanism with the shortest channel detection time among the two target channel access mechanisms is used for the second bandwidth unit; wherein the first bandwidth unit is any one of the at least one bandwidth unit, and the second bandwidth unit is a bandwidth unit other than the first bandwidth unit;

[0111] There are three target channel access mechanisms, and the channel detection time required for the three target channel access mechanisms is different. The target channel access mechanism with the longest channel detection time among the three target channel access mechanisms is used for the first bandwidth unit, the target channel access mechanism with the shortest channel detection time among the three target channel access mechanisms is used for the second bandwidth unit, and the target channel access mechanism with a channel detection time between the shortest and the longest among the three target channel access mechanisms is used for the third bandwidth unit; wherein, the first bandwidth unit is any one of the at least one bandwidth unit, the second bandwidth unit is a bandwidth unit adjacent to the first bandwidth unit, and the third bandwidth unit is a bandwidth unit other than the first bandwidth unit and the second bandwidth unit.

[0112] In conjunction with some embodiments of the fourth aspect, in some embodiments, the second device initiates channel sharing to the first device, and the processing module is further configured to do at least one of the following:

[0113] The first time interval is less than the second value, and the time domain length occupied by the reference signal is less than or equal to N symbols, where N is a positive integer, and the third type of channel access mechanism is determined as the target channel access mechanism; wherein the first time interval is: the time interval between the time when the first device sends the reference signal and the time when the first device receives the transmission of the second device;

[0114] The first time interval is greater than or equal to the second value and less than the third value, and the second type of channel access mechanism is determined as the target channel access mechanism;

[0115] The first time interval is greater than or equal to a third value, and the first type of channel access mechanism is determined as the target channel access mechanism.

[0116] In conjunction with some embodiments of the fourth aspect, in some embodiments, the first type of channel access mechanism is channel detection based on a contention window CW;

[0117] The second type of channel access mechanism is single channel detection;

[0118] The third type of channel access mechanism is not to perform channel detection.

[0119] In conjunction with some embodiments of the fourth aspect, in some embodiments, the second type of channel access mechanism includes at least one of a first channel access mechanism and a second channel access mechanism;

[0120] The first channel access mechanism includes: detecting that the channel is idle within a first time period, deeming the detection successful;

[0121] The second channel access mechanism includes: detecting that the channel is idle within a second time period, deeming the detection successful;

[0122] The first duration is greater than the second duration.

[0123] In combination with some embodiments of the fourth aspect, in some embodiments, the reference signal includes at least one of the following: a positioning reference signal PRS; a sounding reference signal SRS for positioning; a sidelink SL PRS; and a SL SRS for positioning.

[0124] In conjunction with some embodiments of the fourth aspect, in some embodiments, the processing module is further configured to:

[0125] Indication information sent by a third device is received, where the indication information is used to determine at least one target channel access mechanism.

[0126] In a fifth aspect, an embodiment of the present disclosure provides a third device, including:

[0127] A sending module is used to send at least one target channel access mechanism to the first device; the target channel access mechanism is used to perform channel detection on the spectrum resources corresponding to the reference signal; wherein the spectrum resources corresponding to the reference signal are shared spectrum resources.

[0128] In conjunction with some embodiments of the fifth aspect, in some embodiments, the target channel access mechanism includes a first type channel access mechanism, a second type channel access mechanism, or a third type channel access mechanism;

[0129] Among them, the time required for channel detection of the first type of channel access mechanism is greater than or equal to the time required for channel detection of the second type of channel access mechanism, and the time required for channel detection of the second type of channel access mechanism is greater than the time required for channel detection of the third type of channel access mechanism.

[0130] In conjunction with some embodiments of the fifth aspect, in some embodiments, the indication information is used to determine at least one target channel access mechanism, including any one of the following:

[0131] The spectrum resource includes at least two bandwidth units, and the indication information is used to determine a target channel access mechanism, and the target channel access mechanism is used for the at least two bandwidth units;

[0132] The spectrum resources include a bandwidth unit, the indication information is used to determine a target channel access mechanism, and the target channel access mechanism is used for the bandwidth unit.

[0133] In conjunction with some embodiments of the fifth aspect, in some embodiments, the indication information is used to determine at least one target channel access mechanism, including:

[0134] The spectrum resources include at least two bandwidth units, and the indication information is used to determine at least two target channel access mechanisms; the at least two target channel access mechanisms are used for different bandwidth units.

[0135] In conjunction with some embodiments of the fifth aspect, in some embodiments, the indication information is used to determine at least two target channel access mechanisms, including at least one of the following:

[0136] The indication information is used to determine two target channel access mechanisms, where the two target channel access mechanisms have different channel detection time requirements, the target channel access mechanism with the longest channel detection time among the two target channel access mechanisms is used for the first bandwidth unit, the target channel access mechanism with the shortest channel detection time among the two target channel access mechanisms is used for the second bandwidth unit, and the target channel access mechanism with the longest channel detection time among the two target channel access mechanisms is also used for the third bandwidth unit; wherein, the first bandwidth unit is any one of the at least one bandwidth unit, the second bandwidth unit is a bandwidth unit adjacent to the first bandwidth unit, and the third bandwidth unit is a bandwidth unit other than the first bandwidth unit and the second bandwidth unit;

[0137] The indication information is used to determine two target channel access mechanisms, where the two target channel access mechanisms have different channel detection time durations, the target channel access mechanism with the longest channel detection time duration among the two target channel access mechanisms is used for a first bandwidth unit, and the target channel access mechanism with the shortest channel detection time duration among the two target channel access mechanisms is used for a second bandwidth unit; wherein the first bandwidth unit is any one of the at least one bandwidth unit, and the second bandwidth unit is a bandwidth unit other than the first bandwidth unit;

[0138] The indication information is used to determine three target channel access mechanisms, and the channel detection time required for the three target channel access mechanisms is different. The target channel access mechanism with the longest channel detection time among the three target channel access mechanisms is used for the first bandwidth unit, the target channel access mechanism with the shortest channel detection time among the three target channel access mechanisms is used for the second bandwidth unit, and the target channel access mechanism with the channel detection time between the shortest and the longest among the three target channel access mechanisms is used for the third bandwidth unit; wherein, the first bandwidth unit is any one of the at least one bandwidth unit, the second bandwidth unit is a bandwidth unit adjacent to the first bandwidth unit, and the third bandwidth unit is a bandwidth unit other than the first bandwidth unit and the second bandwidth unit.

[0139] With reference to some embodiments of the fifth aspect, in some embodiments, the first type of channel access mechanism is CW-based channel detection;

[0140] The second type of channel access mechanism is single channel detection;

[0141] The third type of channel access mechanism is not to perform channel detection.

[0142] In conjunction with some embodiments of the fifth aspect, in some embodiments, the second type of channel access mechanism includes at least one of a first channel access mechanism and a second channel access mechanism;

[0143] The first channel access mechanism includes: detecting that the channel is idle within a first time period, deeming the detection successful;

[0144] The second channel access mechanism includes: detecting that the channel is idle within a second time period, deeming the detection successful;

[0145] The first duration is greater than the second duration.

[0146] In combination with some embodiments of the fifth aspect, in some embodiments, the reference signal includes at least one of the following: PRS; SRS for positioning; SL PRS; SL SRS for positioning.

[0147] In a sixth aspect, an embodiment of the present disclosure proposes a communication device, which includes: one or more processors; one or more memories for storing instructions; wherein the processor is used to call the instructions so that the communication device executes the channel detection method described in the first and second aspects, and the optional implementation methods of the first and second aspects.

[0148] In the seventh aspect, an embodiment of the present disclosure proposes a communication system, which includes: a first device and a third device; wherein the terminal is configured to execute the method described in the first aspect and the optional implementation of the first aspect, and the first device is configured to execute the method described in the second aspect and the optional implementation of the second aspect.

[0149] In an eighth aspect, an embodiment of the present disclosure proposes a storage medium, which stores instructions. When the instructions are executed on a communication device, the communication device executes the method described in the first aspect, the optional implementation of the first aspect, the second aspect, and the optional implementation of the second aspect.

[0150] In a ninth aspect, an embodiment of the present disclosure proposes a program product. When the program product is executed by a communication device, the communication device executes the method described in the first aspect, the optional implementation of the first aspect, the second aspect, and the optional implementation of the second aspect.

[0151] In a tenth aspect, an embodiment of the present disclosure proposes a computer program, which, when executed on a computer, enables the computer to execute the method described in the first aspect, the optional implementation of the first aspect, the second aspect, and the optional implementation of the second aspect.

[0152] It is understandable that the first device, the third device, the communication device, the communication system, the storage medium, the program product, and the computer program are all used to perform the method proposed in the embodiment of the present disclosure. Therefore, the beneficial effects that can be achieved can refer to the beneficial effects of the corresponding method and will not be repeated here.

[0153] The present disclosure provides invention titles. In some embodiments, the terms "channel detection method" and "information processing method," "information sending method," and "information receiving method" are interchangeable; the terms "communication device" and "information processing device," "information sending device," and "information receiving device" are interchangeable; and the terms "information processing system," "communication system," "information sending system," and "information receiving system" are interchangeable.

[0154] The embodiments of the present disclosure are not exhaustive and are merely illustrative of some embodiments, and are not intended to be a specific limitation on the scope of protection of the present disclosure. In the absence of contradiction, each step in a certain embodiment can be implemented as an independent embodiment, and the steps can be arbitrarily combined. For example, a solution after removing some steps in a certain embodiment can also be implemented as an independent embodiment, and the order of the steps in a certain embodiment can be arbitrarily exchanged. In addition, the optional implementation methods in a certain embodiment can be arbitrarily combined; in addition, the embodiments can be arbitrarily combined. For example, some or all steps of different embodiments can be arbitrarily combined, and a certain embodiment can be arbitrarily combined with the optional implementation methods of other embodiments.

[0155] In each embodiment of the present disclosure, unless otherwise specified or provided for by logic, the terms and / or descriptions between the embodiments are consistent and can be referenced by each other. The technical features in different embodiments can be combined to form a new embodiment based on their inherent logical relationships.

[0156] The terms used in the embodiments of the present disclosure are only for the purpose of describing specific embodiments and are not intended to limit the present disclosure.

[0157] In the embodiments of the present disclosure, unless otherwise specified, elements expressed in the singular, such as "a", "an", "the", "above", "said", "the", "the", etc., may mean "one and only one", or "one or more", "at least one", etc. For example, when using articles such as "a", "an", "the" in English in translation, the noun following the article may be understood as a singular expression or a plural expression.

[0158] In the embodiments of the present disclosure, “plurality” refers to two or more.

[0159] In some embodiments, the terms "at least one of", "at least one of", "at least one of", "one or more", "a plurality of", "multiple", etc. can be used interchangeably.

[0160] In the embodiments of the present disclosure, descriptions such as “at least one of A, B, C…”, “A and / or B and / or C…”, etc. include the situation where any one of A, B, C… exists alone, and also include any combination of any multiple of A, B, C…, and each situation can exist alone; for example, “at least one of A, B, C” includes the situation where A exists alone, B exists alone, C exists alone, the combination of A and B, the combination of A and C, the combination of B and C, and the combination of A, B, and C; for example, A and / or B includes the situation where A exists alone, B exists alone, and the combination of A and B.

[0161] In some embodiments, descriptions such as "in one case A, in another case B," or "in response to one case A, in response to another case B," may include the following technical solutions depending on the situation: executing A independently of B (in some embodiments, A); executing B independently of A (in some embodiments, B); selectively executing A and B (in some embodiments, selecting between A and B); and executing both A and B (in some embodiments, A and B). The same applies when there are more branches, such as A, B, and C.

[0162] The prefixes such as "first" and "second" in the embodiments of the present disclosure are only used to distinguish different description objects and do not constitute any restriction on the position, order, priority, quantity or content of the description objects. For the statement of the description object, please refer to the description in the context of the claims or embodiments, and no unnecessary restriction should be constituted due to the use of prefixes. For example, if the description object is a "field", the ordinal number before the "field" in the "first field" and the "second field" does not limit the position or order between the "fields". "First" and "second" do not limit whether the "fields" they modify are in the same message, nor do they limit the order of the "first field" and the "second field". For another example, if the description object is a "level", the ordinal number before the "level" in the "first level" and the "second level" does not limit the priority between the "levels". For another example, the number of description objects is not limited by the ordinal number and can be one or more. Taking "first device" as an example, the number of "devices" can be one or more. In addition, the objects modified by different prefixes can be the same or different. For example, if the description object is "device", then the "first device" and the "second device" can be the same device or different devices, and their types can be the same or different; for another example, if the description object is "information", then the "first information" and the "second information" can be the same information or different information, and their contents can be the same or different.

[0163] In some embodiments, “including A,” “comprising A,” “used to indicate A,” and “carrying A” can be interpreted as directly carrying A or indirectly indicating A.

[0164] In some embodiments, terms such as "in response to...", "in response to determining...", "in the case of...", "at the time of...", "when...", "if...", "if...", etc. can be used interchangeably.

[0165] In some embodiments, terms such as "greater than", "greater than or equal to", "not less than", "more than", "more than or equal to", "not less than", "higher than", "higher than or equal to", "not less than", and "above" can be replaced with each other, and terms such as "less than", "less than or equal to", "not greater than", "less than", "less than or equal to", "not more than", "lower than", "lower than or equal to", "not higher than", and "below" can be replaced with each other.

[0166] In some embodiments, devices, etc. can be interpreted as physical or virtual, and their names are not limited to the names recorded in the embodiments. Terms such as "device", "equipment", "device", "circuit", "network element", "node", "function", "unit", "section", "system", "network", "chip", "chip system", "entity", and "subject" can be used interchangeably.

[0167] In some embodiments, "network" can be interpreted as devices included in the network (eg, access network equipment, core network equipment, etc.).

[0168] In some embodiments, the terms "access network device (AN device)", "radio access network device (RAN device)", "base station (BS)", "radio base station" "fixed station", "node", "access point", "transmission point (TP)", "reception point (RP)", "transmission / reception point (TRP)", "panel", "antenna panel", "antenna array", "cell", "macro cell", "small cell", "femto cell", "pico cell", "sector", "cell group", "carrier", "component carrier", "bandwidth part (BWP)" and the like may be used interchangeably.

[0169] In some embodiments, the terms "terminal", "terminal device", "user equipment (UE)", "user terminal", "mobile station (MS)", "mobile terminal (MT)", subscriber station, mobile unit, subscriber unit, wireless unit, remote unit, mobile device, wireless device, wireless communication device, remote device, mobile subscriber station, access terminal, mobile terminal, wireless terminal, remote terminal, handset, user agent, mobile client, client, etc. can be used interchangeably.

[0170] In some embodiments, the access network device, the core network device, or the network device can be replaced by a terminal. For example, the various embodiments of the present disclosure can also be applied to a structure in which the communication between the access network device, the core network device, or the network device and the terminal is replaced by communication between multiple terminals (for example, it can also be called device-to-device (D2D), vehicle-to-everything (V2X), etc.). In this case, it can also be set as a structure in which the terminal has all or part of the functions of the access network device. In addition, language such as "uplink" and "downlink" can also be replaced by language corresponding to communication between terminals (for example, "side"). For example, uplink channels, downlink channels, etc. can be replaced by side channels, and uplinks, downlinks, etc. can be replaced by side links.

[0171] In some embodiments, the terminal may be replaced by an access network device, a core network device, or a network device. In this case, the access network device, the core network device, or the network device may have a structure that has all or part of the functions of the terminal.

[0172] In some embodiments, obtaining data, information, etc. may comply with the laws and regulations of the country where the data is obtained.

[0173] In some embodiments, data, information, etc. may be obtained with the user's consent.

[0174] In addition, each element, each row, or each column in the table of the embodiment of the present disclosure can be implemented as an independent embodiment, and the combination of any elements, any rows, and any columns can also be implemented as an independent embodiment.

[0175] The correspondences shown in the tables of the present disclosure can be configured or predefined. The values ​​of the information in each table are merely examples and can be configured to other values, which are not limited by the present disclosure. When configuring the correspondences between information and parameters, it is not necessarily required to configure all the correspondences shown in each table. For example, in the tables of the present disclosure, the correspondences shown in certain rows may not be configured. For another example, appropriate deformation adjustments can be made based on the above tables, such as splitting, merging, etc. The names of the parameters shown in the titles of the above tables may also adopt other names that can be understood by the communication device, and the values ​​or representations of the parameters may also adopt other values ​​or representations that can be understood by the communication device. When implementing the above tables, other data structures may 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.

[0176] The predefined in the present disclosure may be understood as defined, predefined, stored, pre-stored, pre-negotiated, pre-configured, solidified, or pre-burned.

[0177] FIG1 is a schematic diagram of the architecture of a communication system according to an embodiment of the present disclosure. As shown in FIG1 , the communication system 100 may be at least one of a first device 101 and a third device 102. The first device may be a reference signal transmitter. Optionally, when the reference signal is a positioning reference signal (PRS), the first device may be an access network device (such as a base station and / or a transmission reception point (TRP)); when the reference signal is at least one of a sounding reference signal (SRS), a sidelink (SL) PRS, and an SL SRS, the first device may be a terminal or a reference positioning unit (PRU); optionally, the third device may be at least one of a terminal, an access network device, a core network device (such as a location management function (LMF)), and a PRU.

[0178] In some embodiments, the terminal includes, for example, a mobile phone, a wearable device, an Internet of Things device, a car with communication function, a smart car, a tablet computer, a computer with wireless transceiver function, a virtual reality (VR) terminal device, an augmented reality (AR) terminal device, a wireless terminal device in industrial control, a wireless terminal device in self-driving, a wireless terminal device in remote medical surgery, a wireless terminal device in a smart grid, a wireless terminal device in transportation safety, a wireless terminal device in a smart city, and at least one of a wireless terminal device in a smart home, but is not limited thereto.

[0179] In some embodiments, the access network device is, for example, a node or device that accesses a terminal to a wireless network. The access network device may include an evolved NodeB (eNB), a next generation evolved NodeB (ng-eNB), a next generation NodeB (gNB), a node B (NB), a home node B (HNB), a home evolved nodeB (HeNB), a wireless backhaul device, a radio network controller (RNC), a base station controller (BSC), a base transceiver station (BTS), a base band unit (BBU), a mobile switching center, a base station in a 6G communication system, an open base station (Open RAN), a cloud base station (Cloud RAN), a base station in other communication systems, and at least one of an access node in a wireless fidelity (WiFi) system, but is not limited thereto.

[0180] In some embodiments, the technical solution of the present disclosure can be applied to the Open RAN architecture. In this case, the interfaces between or within the access network devices involved in the embodiments of the present disclosure can be transformed into internal interfaces of the Open RAN, and the processes and information interactions between these internal interfaces can be implemented through software or programs.

[0181] In some embodiments, the access network device can be composed of a centralized unit (CU) and a distributed unit (DU), where the CU can also be called a control unit. The CU-DU structure can be used to split the protocol layer of the access network device, with the functions of some protocol layers centrally controlled by the CU, and the functions of the remaining part or all of the protocol layers distributed in the DU, which is centrally controlled by the CU, but is not limited to this.

[0182] In some embodiments, the core network device may be a device including one or more network elements, or may be multiple devices or a group of devices, each including all or part of one or more network elements. The network element may be virtual or physical. The core network, for example, includes at least one of an Evolved Packet Core (EPC), a 5G Core Network (5GCN), and a Next Generation Core (NGC). Alternatively, the core network device may also be a location management function network element. Exemplarily, the location management function network element includes a location server (location server), which may be implemented as any one of the following: Location Management Function (LMF), Enhanced Serving Mobile Location Centre (E-SMLC), Secure User Plane Location (SUPL), and Secure User Plane Location Platform (SUPLLP).

[0183] It can be understood that the communication system described in the embodiment of the present disclosure is for the purpose of more clearly illustrating the technical solution of the embodiment of the present disclosure, and does not constitute a limitation on the technical solution proposed in the embodiment of the present disclosure. Ordinary technicians in this field can know that with the evolution of the system architecture and the emergence of new business scenarios, the technical solution proposed in the embodiment of the present disclosure is also applicable to similar technical problems.

[0184] The following embodiments of the present disclosure may be applied to the communication system 100 shown in Figure 1, or a portion thereof, but are not limited thereto. The entities shown in Figure 1 are illustrative only. The communication system may include all or part of the entities shown in Figure 1, or may include other entities outside of Figure 1. The number and form of the entities may be arbitrary. The connection relationship between the entities is illustrative only. The entities may be connected or disconnected, and the connection may be in any manner, including direct or indirect, wired or wireless.

[0185] The embodiments of the present disclosure can be applied to Long Term Evolution (LTE), LTE-Advanced (LTE-A), LTE-Beyond (LTE-B), SUPER 3G, IMT-Advanced, 4th generation mobile communication system (4G), 5th generation mobile communication system (5G), 5G new radio (NR), future radio access (FRA), new radio access technology (RAT), new radio (NR), new radio access (NX), future generation radio access (FX), Global System for Mobile Communications (GSM (registered trademark)), CDMA2000, Ultra Mobile Broadband (UMB), IEEE 802.11 (Wi-Fi (registered trademark)), IEEE 802.16 (WiMAX (registered trademark)), IEEE 802.20, Ultra-WideBand (UWB), Bluetooth (registered trademark), Public Land Mobile Network (PLMN) networks, Device-to-Device (D2D) systems, Machine-to-Machine (M2M) systems, Internet of Things (IoT) systems, Vehicle-to-Everything (V2X), systems utilizing other channel detection methods, and next-generation systems based on and extending these systems. Furthermore, multiple systems may be combined (for example, a combination of LTE or LTE-A with 5G).

[0186] Optionally, in a communication system, for downlink positioning measurement, the introduced positioning reference signal is: downlink positioning reference signal (PRS), for uplink positioning measurement, the introduced positioning reference signal is: sounding reference signal (SRS), for sidelink (SL) measurement, the introduced positioning reference signal is: SL PRS and / or SL SRS; optionally, in some embodiments, in order to improve positioning bandwidth and spectrum utilization, it is necessary to introduce the sending and receiving of positioning reference signals based on unlicensed spectrum. Among them, unlicensed spectrum and shared spectrum can be replaced with each other. Optionally, on the unlicensed spectrum, the transmitter needs to perform listen before talk (LBT) to monitor the channel conditions of the unlicensed spectrum before sending the positioning reference signal on the spectrum resources corresponding to the positioning reference signal. Optionally, the transmitter needs to first monitor the energy on the unlicensed spectrum. If the energy intensity is lower than the threshold, it means that the channel of the unlicensed spectrum is not occupied by other devices, that is, the channel of the unlicensed spectrum is in an idle state, and LBT is successful. At this time, the transmitter will send the positioning reference signal. If the energy intensity is higher than the threshold, it means that the channel of the unlicensed spectrum is occupied by other devices, that is, the channel of the unlicensed spectrum is in a busy state, and LBT fails. At this time, the transmitter cannot use the unlicensed spectrum to send the positioning reference signal. Among them, LBT and channel access process can be replaced with each other.

[0187] However, in some embodiments, the LBT detection unit is limited to a maximum value, such as a maximum value of 20 megahertz (MHz), and the bandwidth of the spectrum resources configured for the positioning reference signal for transmission may be greater than 20MHz. In this case, the transmitter will independently perform LBT detection on each detection unit. For example, if the spectrum resource corresponding to the positioning reference signal is 60MHz, the transmitter will independently perform LBT detection on the first 20MHz, the middle 20MHz, and the last 20MHz of the spectrum resource. As a result, some 20MHz are detected as LBT idle, while others are detected as LBT busy. This may cause the bandwidth of the LBT idle resources to be less than the total bandwidth of the spectrum resources, and may cause the LBT idle resources to be non-continuous, thereby reducing positioning accuracy. Therefore, "how to perform channel access detection so that the bandwidth for reference signal transmission (or the bandwidth for detecting LBT idle) is as wide and continuous as possible" is a problem that needs to be solved.

[0188] FIG2A is an interactive diagram of a channel detection method according to an embodiment of the present disclosure. As shown in FIG2A , the embodiment of the present disclosure relates to a channel detection method for a communication system 100, the method comprising:

[0189] Step 2101: Determine the spectrum resources corresponding to the reference signal.

[0190] The reference signal is a signal used for positioning. Optionally, in some embodiments, the reference signal may include at least one of the following: a PRS; an SRS used for positioning; an SLPRS; or an SLSRS used for positioning.

[0191] Optionally, in some embodiments, the first device may be a reference signal transmitter. Optionally, when the reference signal is a positioning reference signal (PRS), the first device may be an access network device (such as a base station and / or a transmission reception point (TRP)); when the reference signal is at least one of a sounding reference signal (SRS), a sidelink (SL) PRS, and an SL SRS, the first device may be a terminal or a reference positioning unit (PRU).

[0192] Optionally, in some embodiments, the spectrum resource may be a shared spectrum resource, wherein the shared spectrum may be interchangeable with an unlicensed spectrum.

[0193] Optionally, the spectrum resources corresponding to the reference signal include resources used to send the reference signal. Optionally, the reference signal transmitter may perform LBT detection in the spectrum resources and transmit the reference signal on resources in the spectrum resources where LBT succeeds. LBT may be interchangeable with a channel access procedure.

[0194] Optionally, in some embodiments, the method for the first device to determine the spectrum resource corresponding to the reference signal may include at least one of the following:

[0195] The reference signal is a PRS, and first configuration information sent by a core network device (such as an LMF) is received, where the first configuration information is used to determine a spectrum resource corresponding to the PRS;

[0196] The reference signal is an SRS, and second configuration information sent by an access network device (such as a base station and / or a TRP) is received, where the second configuration information is used to determine a spectrum resource corresponding to the SRS;

[0197] The reference signal is a SL SRS, and third configuration information sent by at least one of an access network device, a core network device, a peer terminal, and a peer PRU is received, where the third configuration information is used to determine a spectrum resource corresponding to the SL SRS;

[0198] The reference signal is SL PRS, and the fourth configuration information sent by at least one of the access network device, the core network device, the opposite terminal, and the opposite PRU is received. The fourth configuration information is used to determine the spectrum resources corresponding to the SL PRS.

[0199] Optionally, in some embodiments, when the above-mentioned first configuration information, second configuration information or third configuration information is sent by a core network device, the first configuration information, second configuration information or third configuration information may be sent by a Long Term Evolution Positioning Protocol (LPP) message; when the above-mentioned first configuration information, second configuration information or third configuration information is sent by an access network device, the first configuration information, second configuration information or third configuration information may be sent by at least one of Radio Resource Control (RRC) signaling, Medium Access Control Control Element (MAC CE) signaling, and Downlink Control Information (DCI) signaling; when the above-mentioned first configuration information, second configuration information or third configuration information is sent by a peer terminal or PRU, the first configuration information, second configuration information or third configuration information may be sent by SL RRC, SL MAC CE, SL Sidelink Control Information (DCI) signaling. It is sent by at least one of the physical sidelink shared channel (PSSCH) and the physical sidelink control channel (PSCCH).

[0200] Optionally, in some embodiments, the first configuration information, the second configuration information or the third configuration information is also used to configure at least one of the following: time domain parameters of the reference signal; frequency domain parameters of the reference signal; comb parameters of the reference signal; power control parameters of the reference signal; quasi-co-located (QCL) information of the reference signal; spatial relationship information of the reference signal; resource identification (ID) of the reference signal; and resource set ID of the reference signal.

[0201] Optionally, in some embodiments, the time domain parameter may include at least one of the following: a period; a starting time slot; a starting symbol; a number of occupied symbols; a number of repeated transmissions; and an interval value between repeated transmissions.

[0202] Optionally, in some embodiments, the frequency domain parameter may include at least one of the following: frequency domain position; frequency domain offset; frequency hopping mode.

[0203] The above frequency domain parameters are used to determine spectrum resources.

[0204] Optionally, in some embodiments, the comb parameter may include at least one of the following: a comb value; a cyclic shift.

[0205] Optionally, in some embodiments, the power control parameter may include at least one of the following: a P0 value; an alpha value; and a path loss reference signal (RS).

[0206] Optionally, in some embodiments, the spectrum resources corresponding to different reference signals configured in the configuration information (i.e., the aforementioned first configuration information, second configuration information, or third configuration information) are the same or different. For example, for PRS, the spectrum resources corresponding to different PRS resource sets in the configuration information may be the same or different. Since PRS is sent by an access network device TRP, a single access network device TRP may correspond to one or more PRS resource sets, and different PRS resource sets may correspond to the same TRP or different TRPs. Therefore, the spectrum resources in the configuration information may be the same or different for different PRS resource sets. Alternatively, for SRS, the spectrum resources corresponding to different SRS resources in the configuration information may be the same or different. Because different SRSs are sent by a terminal to different access network devices, the spectrum resources configured in the configuration information for SRSs communicated between the terminal and different access network devices may be the same or different. Alternatively, for SL SRS or SL PRS, which are sent by a terminal to a peer terminal or PRU, the spectrum resources configured in the configuration information for SL SRS or SL PRSs communicated between the terminal and different peer terminals or different PRUs may be the same or different.

[0207] Optionally, in some embodiments, reference signals corresponding to different TRPs can be distinguished by using different reference signal identifiers. For example, PRSs transmitted between different access network devices TRPs and terminals can be distinguished by different PRS IDs.

[0208] Step 2102: The first device determines at least one bandwidth unit included in the spectrum resources.

[0209] Optionally, the spectrum resource can be divided into at least one bandwidth unit, for the first device to perform LBT detection on each bandwidth unit. For the bandwidth unit in the spectrum resource where LBT is successful, the first device can transmit a reference signal on the bandwidth unit.

[0210] The bandwidth unit is a unit divided from the concept of frequency domain, which may be one or more subcarriers, or one or more resource blocks (RBs), which are not limited here.

[0211] Optionally, in some embodiments, the method for the first device to determine at least one bandwidth unit included in the spectrum resources may include:

[0212] Determine first information; the first information can be used to indicate a division method of bandwidth units; optionally, the first information includes at least one of the following: a starting position of each bandwidth unit; a bandwidth of each bandwidth unit; an ending position of each bandwidth unit; a starting position of an interval resource between two adjacent bandwidth units; a bandwidth of an interval resource between two adjacent bandwidth units; and an ending position of an interval resource between two adjacent bandwidth units.

[0213] Optionally, when the first information includes the starting position of the interval resource between two adjacent bandwidth units and the ending position of the interval resource between two adjacent bandwidth units, at least one bandwidth unit included in the spectrum resource can be determined in the following manner: Optionally, the starting position of the first bandwidth unit is the same as the starting position of the spectrum resource, and the ending position of the first bandwidth unit is the starting position of the first interval frequency domain (i.e., the interval resource between the first bandwidth unit and the second bandwidth unit); the starting position of the second bandwidth unit is the ending position of the first interval frequency domain, and the ending position of the second bandwidth unit is the starting position of the second interval frequency domain (i.e., the interval resource between the second bandwidth unit and the third bandwidth unit), and so on, to determine the starting position and ending position of each bandwidth unit.

[0214] Optionally, in some embodiments, the method for determining the first information may include at least one of the following:

[0215] The reference signal is a PRS, and the first information is determined based on at least one of transmission by a core network device, transmission by an access network device, a protocol agreement, and a default rule;

[0216] The reference signal is an SRS, and the first information is determined based on at least one of transmission by an access network device, a protocol agreement, and a default rule;

[0217] The reference signal is an SL SRS, and the first information is determined based on at least one of transmission by a core network device, transmission by an access network device, transmission by a peer terminal, transmission by a PRU, a protocol agreement, and a default rule;

[0218] The reference signal is SL PRS, and the first information is determined based on at least one of the transmission of the core network device, the transmission of the access network device, the transmission of the opposite terminal, the transmission of the PRU, the protocol agreement, and the default rule.

[0219] Optionally, in some embodiments, the bandwidth units in the spectrum resources corresponding to different reference signals are divided in the same or different ways. For example, for PRS, it is sent by the access network device to the terminal, wherein the bandwidth units in the spectrum resources corresponding to the PRS communicated between different access network devices and the terminal are divided in the same or different ways; or, for SRS, it is sent by the terminal to the access network device, wherein the bandwidth units in the spectrum resources corresponding to the SRS communicated between the terminal and different access network devices are divided in the same or different ways; or, for SL SRS or SL PRS, it is sent by the terminal to the opposite terminal or PRU, wherein the bandwidth units in the spectrum resources corresponding to the SL SRS or SL PRS communicated between the terminal and different opposite terminals or different PRUs are divided in the same or different ways.

[0220] Optionally, in some embodiments, the spectrum resources may include one or more bandwidth units, wherein when the spectrum resources include multiple bandwidth units, the bandwidth of the bandwidth unit is smaller than the bandwidth of the spectrum resources. For example, the bandwidth of the bandwidth unit may be 20 MHz; when the spectrum resources include one bandwidth unit, it means that the spectrum resources are not divided into bandwidth units. In this case, the spectrum resources are called one bandwidth unit, and the bandwidth of the one bandwidth unit is equal to the bandwidth of the spectrum resources.

[0221] Step 2103: The third device sends indication information to the first device.

[0222] Optionally, the third device may be at least one of an access network device, a core network device (such as LMF), a terminal, and a PRU.

[0223] Optionally, in some embodiments, the indication information may be used to determine at least one target channel access mechanism.

[0224] Optionally, the target channel access mechanism can be used to determine whether the channel is idle, and / or, the target channel access mechanism can be used to determine whether the channel can be used for positioning, that is, to determine whether the channel can be used to transmit a positioning reference signal. Optionally, the target channel access mechanism can be used by the first device to perform channel detection on one or more bandwidth units in the spectrum resources corresponding to the reference signal, such as: performing LBT detection. Optionally, when the first device detects that the channel of the bandwidth unit is idle based on the target channel access mechanism, it can send a reference signal on the idle bandwidth unit.

[0225] Optionally, the target channel access mechanism may include a first-category channel access mechanism, a second-category channel access mechanism, or a third-category channel access mechanism; wherein the time required for channel detection of the first-category channel access mechanism is greater than or equal to the time required for channel detection of the second-category channel access mechanism, and the time required for channel detection of the second-category channel access mechanism is greater than the time required for channel detection of the third-category channel access mechanism. The time required for channel detection of a channel access mechanism is proportional to the detection strictness of the channel access mechanism; the longer the channel detection time required for a channel access mechanism, the stricter the detection strictness of the channel access mechanism.

[0226] Optionally, in some embodiments, the first type of channel access mechanism may be: channel detection based on contention window (CW); for example, the channel detection principle of the first type of channel access mechanism may be as follows: a channel is detected for a time length of T d (T d =16us+m×9(us)). If idle is detected, continue with the following steps.

[0227] S1, set the counter value N=N init , where N init is 0 to CW p A random number uniformly distributed between , execute step S4;

[0228] S2, if N>0, reduce the count value of the counter by 1, that is, N=N-1;

[0229] S3, make the channel length T sl (where T sl The detection length is 9us (microseconds). If the detection is idle, execute step S4; otherwise, execute step S5;

[0230] S4, if N=0, then end the channel access process and consider the detection successful (i.e., LBT successful); otherwise, execute step S2;

[0231] S5, the channel is operated for a time length of T d (T d =16us+m×9(us)), execute step S6;

[0232] S6, if the channel detection result is T d If the time is free, execute step S4; otherwise, execute step S5.

[0233] Optionally, in some embodiments, N of each bandwidth unit can be independently determined. For example, N of each bandwidth unit can be randomly determined according to its own CW or N of each bandwidth unit can be randomly determined according to one of the CWs corresponding to each bandwidth unit, such as the largest CW or the smallest CW or any one of the CWs; or, N of each bandwidth unit has the same value and is randomly determined based on one of the CWs of all CWs of multiple bandwidth units, such as the largest CW or the smallest CW or any one of the CWs.

[0234] Optionally, in some embodiments, the second type of channel access mechanism may be a one-shot channel detection mechanism. Optionally, the second type of channel access mechanism may include at least one of a first channel access mechanism and a second channel access mechanism. The first channel access mechanism includes: detecting that the channel is idle within a first duration is considered a successful detection; the second channel access mechanism includes: detecting that the channel is idle within a second duration is considered a successful detection; the first duration is greater than the second duration. Optionally, the first duration may be 25 us, and the second duration may be 16 us.

[0235] Optionally, in some embodiments, the third type of channel access mechanism may be: no channel detection is performed, that is, no channel detection is required, and the channel is directly considered to be idle.

[0236] Optionally, in some embodiments, the target channel access mechanism determined by the indication information sent by the third device may be one or at least two. Optionally, the third device may first determine the spectrum resources corresponding to the reference signal, and determine the number of target channel access mechanisms indicated by the indication information based on the number of bandwidth units included in the spectrum resources corresponding to the reference signal. The manner in which the third device determines the spectrum resources corresponding to the reference signal may be the same as the aforementioned "method in which the first device determines the spectrum resources corresponding to the reference signal", or the third device may be the configuration end of the spectrum resources corresponding to the reference signal.

[0237] And, when the third device determines the number of target channel access mechanisms indicated by the indication information based on the number of bandwidth units included in the spectrum resource corresponding to the reference signal, when the spectrum resource includes at least two bandwidth units, the indication information can be used to determine a target channel access mechanism, and the one target channel access mechanism can be used for at least two bandwidth units in the spectrum resource; when the spectrum resource includes one bandwidth unit, at this time, it is considered that the spectrum resource is not divided into bandwidth units, and the spectrum resource is called one bandwidth unit, then the indication information can be used to determine a target channel access mechanism, and the one target channel access mechanism can be used for the one bandwidth unit. Optionally, the above-mentioned "target channel access mechanism is used for a certain bandwidth unit" can be understood as: using the target channel access mechanism to perform channel detection on the bandwidth unit.

[0238] Optionally, in some embodiments, when the indication information sent by the third device is used to determine a target channel access mechanism, the target channel access mechanism may be related to the period of the reference signal. Optionally, the duration required for channel detection of the target channel access mechanism may decrease as the period of the reference signal increases. For example, if the period of the reference signal is less than or equal to a first value, the first type of channel access mechanism is determined as the target channel access mechanism; if the period of the reference signal is greater than the first value, the second type of channel access mechanism is determined as the target channel access mechanism. Optionally, the first value may be, for example, 20ms (milliseconds).

[0239] Optionally, in some other embodiments, when the spectrum resources include at least two bandwidth units, the indication information can be used to determine at least two target channel access mechanisms; for example, the indication information can be used to determine two target channel access mechanisms or three target channel access mechanisms.

[0240] Optionally, in some embodiments, when the indication information is used to determine two target channel access mechanisms, the channel detection time required for the two target channel access mechanisms is different, the target channel access mechanism with the longest channel detection time among the two target channel access mechanisms is used for the first bandwidth unit, the target channel access mechanism with the shortest channel detection time among the two target channel access mechanisms is used for the second bandwidth unit, and the target channel access mechanism with the longest channel detection time among the two target channel access mechanisms is also used for the third bandwidth unit; wherein, the first bandwidth unit is any one bandwidth unit of at least one bandwidth unit, the second bandwidth unit is a bandwidth unit adjacent to the first bandwidth unit, and the third bandwidth unit is a bandwidth unit other than the first bandwidth unit and the second bandwidth unit.

[0241] For example, the indication information is used to determine a first type of channel access mechanism and a second type of channel access mechanism; wherein the first type of channel access mechanism is used to perform channel detection on the first bandwidth unit, the second type of channel access mechanism is used to perform channel detection on the second bandwidth unit, and the first type of channel access mechanism is also used to perform channel detection on the third bandwidth unit; or, the first type of channel access mechanism and the third type of channel access mechanism are determined as target channel access mechanisms; wherein the first type of channel access mechanism is used to perform channel detection on the first bandwidth unit, the third type of channel access mechanism is used to perform channel detection on the second bandwidth unit, and the first type of channel access mechanism is also used to perform channel detection on the third bandwidth unit. Channel detection; or, the first channel access mechanism and the second channel access mechanism are determined as target channel access mechanisms; wherein the first channel access mechanism is used to perform channel detection on the first bandwidth unit, the second channel access mechanism is used to perform channel detection on the second bandwidth unit, and the first channel access mechanism is also used to perform channel detection on the third bandwidth unit; or, the first channel access mechanism and the third type of channel access mechanism are determined as target channel access mechanisms; wherein the first channel access mechanism is used to perform channel detection on the first bandwidth unit, the third type of channel access mechanism is used to perform channel detection on the second bandwidth unit, and the first channel access mechanism is also used to perform channel detection on the third bandwidth unit.

[0242] Optionally, in other embodiments, when the indication information is used to determine two target channel access mechanisms, the channel detection time required for the two target channel access mechanisms is different, the target channel access mechanism with the longest channel detection time among the two target channel access mechanisms is used for the first bandwidth unit, and the target channel access mechanism with the shortest channel detection time among the two target channel access mechanisms is used for the second bandwidth unit; wherein, the first bandwidth unit is any one of the at least one bandwidth unit, and the second bandwidth unit is a bandwidth unit other than the first bandwidth unit.

[0243] For example, the indication information is used to determine a first type of channel access mechanism and a second type of channel access mechanism; wherein the first type of channel access mechanism is used to perform channel detection on the first bandwidth unit, and the second type of channel access mechanism is used to perform channel detection on the second bandwidth unit; or, the first type of channel access mechanism and the third type of channel access mechanism are determined as target channel access mechanisms; wherein the first type of channel access mechanism is used to perform channel detection on the first bandwidth unit, and the third type of channel access mechanism is used to perform channel detection on the second bandwidth unit; or, the first channel access mechanism and the second channel access mechanism are determined as target channel access mechanisms; wherein the first channel access mechanism is used to perform channel detection on the first bandwidth unit, and the second channel access mechanism is used to perform channel detection on the second bandwidth unit; or, the first channel access mechanism and the third type of channel access mechanism are determined as target channel access mechanisms; wherein the first channel access mechanism is used to perform channel detection on the first bandwidth unit, and the third type of channel access mechanism is used to perform channel detection on the second bandwidth unit.

[0244] Optionally, in other embodiments, when the indication information is used to determine three target channel access mechanisms, the three target channel access mechanisms have different channel detection time requirements, the target channel access mechanism with the longest channel detection time among the three target channel access mechanisms is used for the first bandwidth unit, the target channel access mechanism with the shortest channel detection time among the three target channel access mechanisms is used for the second bandwidth unit, and the target channel access mechanism with a channel detection time between the shortest and the longest among the three target channel access mechanisms is used for the third bandwidth unit; wherein the first bandwidth unit is any one of the at least one bandwidth units, the second bandwidth unit is the bandwidth unit adjacent to the first bandwidth unit, and the third bandwidth unit is a bandwidth unit other than the first bandwidth unit and the second bandwidth unit.

[0245] In an example, the indication information is used to determine a first type of channel access mechanism, a second type of channel access mechanism, and a third type of channel access mechanism; wherein, the first type of channel access mechanism is used to perform channel detection on the first bandwidth unit, the third type of channel access mechanism is used to perform channel detection on the second bandwidth unit, and the second type of channel access mechanism is used to perform channel detection on the third bandwidth unit; the first channel access mechanism, the second channel access mechanism, and the third type of channel access mechanism are determined as target channel access mechanisms; wherein, the first channel access mechanism is used to perform channel detection on the first bandwidth unit, the third type of channel access mechanism is used to perform channel detection on the second bandwidth unit, and the second channel access mechanism is used to perform channel detection on the third bandwidth unit.

[0246] Step 2104: The first device determines at least one target channel access mechanism.

[0247] Optionally, in some embodiments, the first device may autonomously determine the at least one target channel access mechanism, and / or the first device may determine the at least one target channel access mechanism based on indication information sent by a third device. For an introduction to the indication information, refer to the above step description.

[0248] Optionally, in some embodiments, the method for the first device to autonomously determine at least one target channel access mechanism may include any one of the following:

[0249] Method 1: The spectrum resource includes at least two bandwidth units, and a target channel access mechanism is determined. The target channel access mechanism is used for the at least two bandwidth units.

[0250] Optionally, in some embodiments, when the spectrum resources include at least two bandwidth units, the first device may determine the same target channel access mechanism for the at least two bandwidth units, so as to apply the determined target channel access mechanism to the at least two bandwidth units. Optionally, "applying the target channel access mechanism to the at least two bandwidth units" may be understood as, for example, performing channel detection on the at least two bandwidth units using the target channel access mechanism.

[0251] Optionally, in some embodiments, the method for the first device to determine a target channel access mechanism may include: determining a target channel access mechanism based on a period of a reference signal, wherein the duration required for channel detection of the target channel access mechanism may decrease as the period of the reference signal increases. For example, if the period of the reference signal is less than or equal to a first value, a first type of channel access mechanism is determined as the target channel access mechanism; if the period of the reference signal is greater than the first value, a second type of channel access mechanism is determined as the target channel access mechanism. Optionally, the first value may be, for example, 20 ms (milliseconds).

[0252] Method 2: The spectrum resources include one bandwidth unit, and one target channel access mechanism is determined. The target channel access mechanism is used for one bandwidth unit.

[0253] Optionally, in some embodiments, "the spectrum resources include a bandwidth unit" can be understood as: the spectrum resources are not divided into bandwidth units, and the spectrum resources are called a bandwidth unit. At this time, the first device can determine a target channel access mechanism and use the target channel access mechanism for the bandwidth unit. Optionally, "using the target channel access mechanism for the bandwidth unit" can be understood as: using the target channel access mechanism to perform channel detection on the bandwidth unit.

[0254] Optionally, the method for how the first device determines a target channel access mechanism may refer to the aforementioned content.

[0255] Method three: The spectrum resources include at least two bandwidth units, and at least two target channel access mechanisms are determined; the at least two target channel access mechanisms are used for different bandwidth units.

[0256] Optionally, in some embodiments, the method for determining at least two target channel access mechanisms may include at least one of the following:

[0257] The first type is to determine two target channel access mechanisms, where the channel detection times required for the two target channel access mechanisms are different. The target channel access mechanism with the longest channel detection time among the two target channel access mechanisms is used for the first bandwidth unit, the target channel access mechanism with the shortest channel detection time among the two target channel access mechanisms is used for the second bandwidth unit, and the target channel access mechanism with the longest channel detection time among the two target channel access mechanisms is also used for the third bandwidth unit; wherein the first bandwidth unit is any one bandwidth unit of at least one bandwidth unit, the second bandwidth unit is a bandwidth unit adjacent to the first bandwidth unit, and the third bandwidth unit is a bandwidth unit other than the first bandwidth unit and the second bandwidth unit.

[0258] For example, the first type of channel access mechanism and the second type of channel access mechanism are determined as target channel access mechanisms; wherein the first type of channel access mechanism is used to perform channel detection on the first bandwidth unit, the second type of channel access mechanism is used to perform channel detection on the second bandwidth unit, and the first type of channel access mechanism is also used to perform channel detection on the third bandwidth unit; or, the first type of channel access mechanism and the third type of channel access mechanism are determined as target channel access mechanisms; wherein the first type of channel access mechanism is used to perform channel detection on the first bandwidth unit, the third type of channel access mechanism is used to perform channel detection on the second bandwidth unit, and the first type of channel access mechanism is also used to perform channel detection on the third bandwidth unit. Perform channel detection on the first bandwidth unit; or, determine the first channel access mechanism and the second channel access mechanism as the target channel access mechanism; wherein the first channel access mechanism is used to perform channel detection on the first bandwidth unit, the second channel access mechanism is used to perform channel detection on the second bandwidth unit, and the first channel access mechanism is also used to perform channel detection on the third bandwidth unit; or, determine the first channel access mechanism and the third type of channel access mechanism as the target channel access mechanism; wherein the first channel access mechanism is used to perform channel detection on the first bandwidth unit, the third type of channel access mechanism is used to perform channel detection on the second bandwidth unit, and the first channel access mechanism is also used to perform channel detection on the third bandwidth unit.

[0259] The second type is to determine two target channel access mechanisms, where the channel detection times required for the two target channel access mechanisms are different. The target channel access mechanism with the longest channel detection time among the two target channel access mechanisms is used for the first bandwidth unit, and the target channel access mechanism with the shortest channel detection time among the two target channel access mechanisms is used for the second bandwidth unit; wherein the first bandwidth unit is any one of the at least one bandwidth unit, and the second bandwidth unit is a bandwidth unit other than the first bandwidth unit.

[0260] For example, the first type of channel access mechanism and the second type of channel access mechanism are determined as target channel access mechanisms; wherein the first type of channel access mechanism is used to perform channel detection on the first bandwidth unit, and the second type of channel access mechanism is used to perform channel detection on the second bandwidth unit; or, the first type of channel access mechanism and the third type of channel access mechanism are determined as target channel access mechanisms; wherein the first type of channel access mechanism is used to perform channel detection on the first bandwidth unit, and the third type of channel access mechanism is used to perform channel detection on the second bandwidth unit; or, the first channel access mechanism and the second channel access mechanism are determined as target channel access mechanisms; wherein the first channel access mechanism is used to perform channel detection on the first bandwidth unit, and the second channel access mechanism is used to perform channel detection on the second bandwidth unit; or, the first channel access mechanism and the third type of channel access mechanism are determined as target channel access mechanisms; wherein the first channel access mechanism is used to perform channel detection on the first bandwidth unit, and the third type of channel access mechanism is used to perform channel detection on the second bandwidth unit.

[0261] The third type is to determine three target channel access mechanisms, and the channel detection time required for the three target channel access mechanisms is different. The target channel access mechanism with the longest channel detection time among the three target channel access mechanisms is used for the first bandwidth unit, the target channel access mechanism with the shortest channel detection time among the three target channel access mechanisms is used for the second bandwidth unit, and the target channel access mechanism with a channel detection time between the shortest and the longest among the three target channel access mechanisms is used for the third bandwidth unit; wherein the first bandwidth unit is any bandwidth unit of at least one bandwidth unit, the second bandwidth unit is a bandwidth unit adjacent to the first bandwidth unit, and the third bandwidth unit is a bandwidth unit other than the first bandwidth unit and the second bandwidth unit.

[0262] For example, the first channel access mechanism, the second channel access mechanism, and the third channel access mechanism are determined as target channel access mechanisms; wherein, the first channel access mechanism is used to perform channel detection on the first bandwidth unit, the third channel access mechanism is used to perform channel detection on the second bandwidth unit, and the second channel access mechanism is used to perform channel detection on the third bandwidth unit; the first channel access mechanism, the second channel access mechanism, and the third channel access mechanism are determined as target channel access mechanisms; wherein, the first channel access mechanism is used to perform channel detection on the first bandwidth unit, the third channel access mechanism is used to perform channel detection on the second bandwidth unit, and the second channel access mechanism is used to perform channel detection on the third bandwidth unit.

[0263] Method 4: When the second device initiates channel sharing to the first device, a target channel access mechanism is determined based on the first time interval.

[0264] Optionally, in some embodiments, the second device may be the opposite device of the first device, and the second device may initiate channel sharing to the first device. For example, when the second device detects the channel idle time (such as the channel occupancy time (COT)) through LBT, in addition to sending signals during the channel idle time, the second device may also share the channel idle time with the first device, so that the first device may also use the channel idle time detected by the second device to send signals.

[0265] Optionally, in some embodiments, when the reference signal is PRS, the first device may be an access network device, and the second device may be a terminal; when the reference signal is SRS, the first device may be a terminal, and the second device may be an access network device; when the reference signal is SL PRS and / or SL SRS, the first device may be a terminal or PRU, and the second device may also be a terminal or PRU.

[0266] The first time interval can be used to indirectly indicate the duration of time the first device has been in the shared COT. For example, the shorter the first time interval, the longer the first device may have been in the shared COT. The first time interval can include: the duration of time the second device has been in the shared COT and / or part or all of the duration of time the shared COT has been allocated to the first device.

[0267] Optionally, the first time interval may be: the time interval between the time point when the first device sends the reference signal and the time point when the first device receives information sent by the second device. Optionally, the first time interval may be: the time interval between the time point when the first device sends the reference signal and the time point when the first device last receives information sent by the second device, or the first time interval may be: the time interval between the time point when the first device sends the reference signal and the time point when the first device receives any information sent by the second device.

[0268] Optionally, the method for the first device to determine the target channel access mechanism based on the first time interval may include:

[0269] The first time interval is less than the second value, and the time domain length occupied by the reference signal is less than or equal to N symbols, where N is a positive integer, and the third type of channel access mechanism is determined as the target channel access mechanism; wherein the first time interval is: the time interval between the time when the first device sends the reference signal and the time when the first device receives the transmission from the second device; optionally, when the first time interval is less than the second value, it means that the first time interval is small, that is, the interval between the time when the first device sends the reference signal and the time when the first device receives the transmission from the second device is small, then the probability that the channel is idle is large at this time, and thus a looser channel access mechanism can be used for channel detection, for example: the loosest third type of channel access mechanism can be determined as the target channel access mechanism.

[0270] The first time interval is greater than or equal to the second value and less than the third value, and the second type of channel access mechanism is determined as the target channel access mechanism; optionally, when the first time interval is greater than or equal to the second value and less than the third value, it means that the first time interval is moderate, that is, the interval between the time when the first device sends the reference signal and the time when the first device receives the transmission from the second device is moderate, then the probability of the channel being idle at this time is also relatively moderate, so a generally relaxed channel access mechanism can be adopted for channel detection, for example: the second type of channel access mechanism can be determined as the target channel access mechanism.

[0271] The first time interval is greater than or equal to the third value, and the first type of channel access mechanism is determined as the target channel access mechanism. Optionally, when the first time interval is greater than or equal to the third value, it indicates that the first time interval is large, that is, the interval between the time when the first device sends the reference signal and the time when the first device receives the transmission from the second device is large, then the probability of the channel being idle at this time is small, and thus a more stringent channel access mechanism can be adopted for channel detection. For example, the most stringent first type of channel access mechanism can be determined as the target channel access mechanism.

[0272] Optionally, in some embodiments, the second value may be 16 us, and the third value may be 25 us. The value of N mentioned above is different for different subcarrier spacings (SCS). Optionally, when the SCS is 15 kHz, N = 2; when the SCS is 30 kHz, N = 4 symbols; and when the SCS is 60 kHz, N = 8 symbols.

[0273] Optionally, the above methods 1 to 4 are all applicable when the first device initiates channel occupation, and the above method 4 is also applicable when the second device initiates channel occupation and provides channel sharing.

[0274] Optionally, in some other embodiments, when the second device initiates channel sharing to the first device, the first device may determine the target channel access mechanism based on the second time interval. The second time interval may be used to indicate the channel time that the first device can occupy. The second time interval may be selected from one or more candidate values; or, the second time interval may be determined based on the end point of the above-mentioned channel idle time (i.e., the COT detected by the second device through LBT). For example, the second time interval may be the time interval between the time point when the first device sends the reference signal and the end point of the above-mentioned channel idle time (i.e., the COT detected by the second device through LBT). Optionally, when the second time interval is less than the fourth value, the first type of channel access mechanism is determined as the target channel access mechanism; when the second time interval is greater than or equal to the fourth value and less than the fifth value, the second type of channel access mechanism is determined as the target channel access mechanism; when the second time interval is greater than or equal to the fifth value, the third type of channel access mechanism is determined as the target channel access mechanism.

[0275] Optionally, the sum of the above-mentioned first time interval and the above-mentioned second time interval can be a fixed value, for example, it can be: the total duration of the channel idle time detected by the second device through LBT, wherein, when the first time interval is larger, the second time interval is smaller; when the first time interval is smaller, the second time interval is larger.

[0276] Step 2105: The first device performs channel detection on the spectrum resources corresponding to the reference signal based on the target channel access mechanism.

[0277] Optionally, in some embodiments, the first device may perform channel detection on one or more bandwidth units in the spectrum resources corresponding to the reference signal based on the target channel access mechanism.

[0278] For example, in some embodiments, if the first device determines a target channel access mechanism using method one, the first device may perform channel detection on at least two bandwidth units in the spectrum resource corresponding to the reference signal using the determined target channel access mechanism;

[0279] For example, in some further embodiments, if the first device determines a target channel access mechanism using method 2, the first device may perform channel detection on a bandwidth unit in the spectrum resource corresponding to the reference signal using the determined target channel access mechanism;

[0280] For example, in some further embodiments, if the first device determines two target channel access mechanisms using method three, channel detection can be performed on the first bandwidth unit using the target channel access mechanism with the longest channel detection time among the two target channel access mechanisms, channel detection can be performed on the second bandwidth unit using the target channel access mechanism with the shortest channel detection time among the two target channel access mechanisms, and channel detection can be performed on the third bandwidth unit using the target channel access mechanism with the longest channel detection time among the two target channel access mechanisms; wherein the first bandwidth unit is any one of the at least one bandwidth units, the second bandwidth unit is a bandwidth unit adjacent to the first bandwidth unit, and the third bandwidth unit is a bandwidth unit other than the first bandwidth unit and the second bandwidth unit;

[0281] Alternatively, for example, in some further embodiments, if the first device determines two target channel access mechanisms using method three, channel detection may be performed on the first bandwidth unit using the target channel access mechanism with the longest channel detection time among the two target channel access mechanisms, and channel detection may be performed on the second bandwidth unit using the target channel access mechanism with the shortest channel detection time among the two target channel access mechanisms, wherein the first bandwidth unit is any one of the at least one bandwidth unit, and the second bandwidth unit is a bandwidth unit other than the first bandwidth unit;

[0282] Or, for example, in some other embodiments, if the above-mentioned first device adopts method three to determine three target channel access mechanisms, the target channel access mechanism with the longest channel detection time among the three target channel access mechanisms can be used for the first bandwidth unit, the target channel access mechanism with the shortest channel detection time among the three target channel access mechanisms can be used for the second bandwidth unit, and the target channel access mechanism with the channel detection time between the shortest and the longest among the three target channel access mechanisms can be used for the third bandwidth unit; wherein the first bandwidth unit is any one bandwidth unit of at least one bandwidth unit, the second bandwidth unit is the bandwidth unit adjacent to the first bandwidth unit, and the third bandwidth unit is a bandwidth unit other than the first bandwidth unit and the second bandwidth unit.

[0283] Alternatively, for example, in some further embodiments, when the second device initiates channel sharing with the first device, the first device performs channel detection on one or more bandwidth units in the spectrum resource using a target channel access mechanism determined based on the first time interval. For example, if the target channel access mechanism determined by the first device based on the first time interval is a third type of channel access mechanism, the first device may perform channel detection on one or more bandwidth units in the spectrum resource using the third type of channel access mechanism.

[0284] It should be noted that when the bandwidth of the bandwidth unit is different, the threshold value for detecting idleness will also be different. Optionally, the threshold value for detecting idleness can have the same meaning as the threshold value described in the content before the embodiment of Figure 2A. Optionally, when the energy of a bandwidth unit is detected to be lower than the threshold value for detecting idleness based on the target channel access mechanism, it means that the bandwidth unit is not occupied by other devices, that is, the bandwidth unit is in an idle state. If the energy intensity of the bandwidth unit is higher than the threshold value for detecting idleness, it means that the bandwidth unit is occupied by other devices, that is, the bandwidth unit is in a busy state. Optionally, for a bandwidth unit whose channel detection is successful (such as LBT success), the first device can use the bandwidth unit to send a reference signal. For a bandwidth unit whose channel detection fails (such as LBT failure), the first device cannot use the bandwidth unit to send a reference signal.

[0285] Step 2106: The first device sends a reference signal on the first channel.

[0286] Optionally, the first channel may include a channel successfully accessed by the first device through a target channel access mechanism.

[0287] Optionally, in some embodiments, the first device may send a reference signal to the third device, or the first device may send a reference signal to other devices except the third device.

[0288] The channel detection method involved in the embodiments of the present disclosure may include at least one of steps S2101 to S2106. For example, step S2101 may be implemented as an independent embodiment, step S2102 may be implemented as an independent embodiment, step S2103 may be implemented as an independent embodiment, and steps S2101+S2102 may be implemented as independent embodiments, but the present disclosure is not limited thereto.

[0289] In this embodiment or example, unless there is any contradiction, each step can be independent, arbitrarily combined or exchanged in order, the optional methods or optional examples can be arbitrarily combined, and can be arbitrarily combined with any steps of other embodiments or other examples.

[0290] FIG3A is an interactive diagram of a channel detection method according to an embodiment of the present disclosure. As shown in FIG3A , the embodiment of the present disclosure relates to a channel detection method for a first device 101, the method comprising:

[0291] Step 3101: The first device determines spectrum resources corresponding to a reference signal.

[0292] Step 3102: The first device determines at least one bandwidth unit included in the spectrum resources.

[0293] Step 3103: The first device receives the indication information sent by the third device.

[0294] Step 3104: The first device determines at least one target channel access mechanism.

[0295] Step 3105: The first device performs channel detection on the spectrum resources corresponding to the reference signal based on the target channel access mechanism.

[0296] Step 3106: The first device sends a reference signal on the first channel.

[0297] For a detailed description of steps 3101 - 3106 , please refer to the above embodiment description.

[0298] The channel detection method involved in the embodiments of the present disclosure may include at least one of steps S3101 to S3106. For example, step S3101 may be implemented as an independent embodiment, step S3102 may be implemented as an independent embodiment, and steps S3101+S3102 may be implemented as independent embodiments, but are not limited thereto.

[0299] In this embodiment or example, unless there is any contradiction, each step can be independent, arbitrarily combined or exchanged in order, the optional methods or optional examples can be arbitrarily combined, and can be arbitrarily combined with any steps of other embodiments or other examples.

[0300] FIG3B is an interactive diagram of a channel detection method according to an embodiment of the present disclosure. As shown in FIG3E , an embodiment of the present disclosure relates to a channel detection method for a first device 101, the method comprising:

[0301] Step 3201: The first device determines at least one target channel access mechanism;

[0302] Step 3202: The first device performs channel detection on the spectrum resources corresponding to the reference signal based on the target channel access mechanism;

[0303] Optionally, the spectrum resource corresponding to the reference signal is a shared spectrum resource;

[0304] The target channel access mechanism includes a first type channel access mechanism, a second type channel access mechanism, or a third type channel access mechanism;

[0305] Among them, the time required for channel detection of the first type of channel access mechanism is greater than or equal to the time required for channel detection of the second type of channel access mechanism, and the time required for channel detection of the second type of channel access mechanism is greater than the time required for channel detection of the third type of channel access mechanism.

[0306] Optionally, the method further includes:

[0307] The first device determines a spectrum resource corresponding to the reference signal.

[0308] Optionally, the method further includes:

[0309] The first device determines at least one bandwidth unit included in the spectrum resources.

[0310] Optionally, the determining of at least one target channel access mechanism includes any one of the following:

[0311] The spectrum resource includes at least two bandwidth units, and a target channel access mechanism is determined, where the target channel access mechanism is used for the at least two bandwidth units;

[0312] The spectrum resources include a bandwidth unit, and a target channel access mechanism is determined. The target channel access mechanism is used for the bandwidth unit.

[0313] Optionally, determining a target channel access mechanism includes:

[0314] A target channel access mechanism is determined based on a period of the reference signal, wherein the period of the reference signal is inversely proportional to a duration required for channel detection of the target channel access mechanism.

[0315] Optionally, determining a target channel access mechanism includes at least one of the following:

[0316] The period of the reference signal is less than or equal to a first value, and the first type of channel access mechanism is determined as the target channel access mechanism;

[0317] The period of the reference signal is greater than a first value, and the second type of channel access mechanism is determined as the target channel access mechanism.

[0318] Optionally, determining at least one target channel access mechanism includes:

[0319] The spectrum resources include at least two bandwidth units, and at least two target channel access mechanisms are determined; the at least two target channel access mechanisms are used for different bandwidth units.

[0320] Optionally, the determining of at least two target channel access mechanisms includes at least one of the following:

[0321] Determine two target channel access mechanisms, where the two target channel access mechanisms have different channel detection time requirements, the target channel access mechanism with the longest channel detection time among the two target channel access mechanisms is used for a first bandwidth unit, the target channel access mechanism with the shortest channel detection time among the two target channel access mechanisms is used for a second bandwidth unit, and the target channel access mechanism with the longest channel detection time among the two target channel access mechanisms is also used for a third bandwidth unit; wherein the first bandwidth unit is any one of the at least one bandwidth unit, the second bandwidth unit is a bandwidth unit immediately adjacent to the first bandwidth unit, and the third bandwidth unit is a bandwidth unit other than the first bandwidth unit and the second bandwidth unit;

[0322] Determine two target channel access mechanisms, where the two target channel access mechanisms have different channel detection time durations, the target channel access mechanism with the longest channel detection time duration among the two target channel access mechanisms being used for a first bandwidth unit, and the target channel access mechanism with the shortest channel detection time duration among the two target channel access mechanisms being used for a second bandwidth unit; wherein the first bandwidth unit is any one of the at least one bandwidth unit, and the second bandwidth unit is a bandwidth unit other than the first bandwidth unit;

[0323] Determine three target channel access mechanisms, where the three target channel access mechanisms require different time durations for channel detection. The target channel access mechanism with the longest time duration for channel detection among the three target channel access mechanisms is used for the first bandwidth unit, the target channel access mechanism with the shortest time duration for channel detection among the three target channel access mechanisms is used for the second bandwidth unit, and the target channel access mechanism with a time duration for channel detection between the shortest and the longest among the three target channel access mechanisms is used for the third bandwidth unit; wherein the first bandwidth unit is any one of the at least one bandwidth unit, the second bandwidth unit is a bandwidth unit adjacent to the first bandwidth unit, and the third bandwidth unit is a bandwidth unit other than the first bandwidth unit and the second bandwidth unit.

[0324] Optionally, the second device initiates channel sharing to the first device, and the determining of at least one target channel access mechanism includes at least one of the following:

[0325] :

[0326] The first time interval is less than the second value, and the time domain length occupied by the reference signal is less than or equal to N symbols, where N is a positive integer, and the third type of channel access mechanism is determined as the target channel access mechanism; wherein the first time interval is: the time interval between the time when the first device sends the reference signal and the time when the first device receives the transmission of the second device;

[0327] The first time interval is greater than or equal to the second value and less than the third value, and the second type of channel access mechanism is determined as the target channel access mechanism;

[0328] The first time interval is greater than or equal to a third value, and the first type of channel access mechanism is determined as the target channel access mechanism.

[0329] Optionally, the first channel access mechanism is channel detection based on a contention window (CW);

[0330] The second type of channel access mechanism is single channel detection;

[0331] The third type of channel access mechanism is not to perform channel detection.

[0332] Optionally, the second channel access mechanism includes at least one of a first channel access mechanism and a second channel access mechanism;

[0333] The first channel access mechanism includes: detecting that the channel is idle within a first time period, deeming the detection successful;

[0334] The second channel access mechanism includes: detecting that the channel is idle within a second time period, deeming the detection successful;

[0335] The first duration is greater than the second duration.

[0336] Optionally, the reference signal includes at least one of the following: a positioning reference signal PRS; a sounding reference signal SRS used for positioning; a sidelink SL PRS; and a SL SRS used for positioning.

[0337] Optionally, determining at least one target channel access mechanism includes:

[0338] Indication information sent by a third device is received, where the indication information is used to determine at least one target channel access mechanism.

[0339] For a detailed description of steps 3201 - 3202 , please refer to the contents of the above-mentioned embodiments of FIG. 2A and FIG. 3A .

[0340] The channel detection method involved in the embodiment of the present disclosure may include at least one of steps S3201 and S3202. For example, step S3201 may be implemented as an independent embodiment, and step S3202 may be implemented as an independent embodiment, but the present invention is not limited thereto.

[0341] In this embodiment or example, unless there is any contradiction, each step can be independent, arbitrarily combined or exchanged in order, the optional methods or optional examples can be arbitrarily combined, and can be arbitrarily combined with any steps of other embodiments or other examples.

[0342] FIG4A is an interactive diagram of a channel detection method according to an embodiment of the present disclosure. As shown in FIG4A , the embodiment of the present disclosure relates to a channel detection method for a third device 102, the method comprising:

[0343] Step 4101: The third device sends indication information to the first device, where the indication information is used to determine at least one target channel access mechanism.

[0344] Optionally, the target channel access mechanism is used to perform channel detection on the spectrum resources corresponding to the reference signal; wherein the spectrum resources corresponding to the reference signal are shared spectrum resources.

[0345] Optionally, the target channel access mechanism includes a first type channel access mechanism, a second type channel access mechanism, or a third type channel access mechanism;

[0346] Among them, the time required for channel detection of the first type of channel access mechanism is greater than or equal to the time required for channel detection of the second type of channel access mechanism, and the time required for channel detection of the second type of channel access mechanism is greater than the time required for channel detection of the third type of channel access mechanism.

[0347] Optionally, the indication information is used to determine at least one target channel access mechanism, including any one of the following:

[0348] The spectrum resource includes at least two bandwidth units, and the indication information is used to determine a target channel access mechanism, and the target channel access mechanism is used for the at least two bandwidth units;

[0349] The spectrum resources include a bandwidth unit, the indication information is used to determine a target channel access mechanism, and the target channel access mechanism is used for the bandwidth unit.

[0350] Optionally, the indication information is used to determine at least one target channel access mechanism, including:

[0351] The spectrum resources include at least two bandwidth units, and the indication information is used to determine at least two target channel access mechanisms; the at least two target channel access mechanisms are used for different bandwidth units.

[0352] Optionally, the indication information is used to determine at least two target channel access mechanisms, including at least one of the following:

[0353] The indication information is used to determine two target channel access mechanisms, where the two target channel access mechanisms have different channel detection time requirements, the target channel access mechanism with the longest channel detection time among the two target channel access mechanisms is used for the first bandwidth unit, the target channel access mechanism with the shortest channel detection time among the two target channel access mechanisms is used for the second bandwidth unit, and the target channel access mechanism with the longest channel detection time among the two target channel access mechanisms is also used for the third bandwidth unit; wherein, the first bandwidth unit is any one of the at least one bandwidth unit, the second bandwidth unit is a bandwidth unit adjacent to the first bandwidth unit, and the third bandwidth unit is a bandwidth unit other than the first bandwidth unit and the second bandwidth unit;

[0354] The indication information is used to determine two target channel access mechanisms, where the two target channel access mechanisms have different channel detection time durations, the target channel access mechanism with the longest channel detection time duration among the two target channel access mechanisms is used for a first bandwidth unit, and the target channel access mechanism with the shortest channel detection time duration among the two target channel access mechanisms is used for a second bandwidth unit; wherein the first bandwidth unit is any one of the at least one bandwidth unit, and the second bandwidth unit is a bandwidth unit other than the first bandwidth unit;

[0355] The indication information is used to determine three target channel access mechanisms, and the channel detection time required for the three target channel access mechanisms is different. The target channel access mechanism with the longest channel detection time among the three target channel access mechanisms is used for the first bandwidth unit, the target channel access mechanism with the shortest channel detection time among the three target channel access mechanisms is used for the second bandwidth unit, and the target channel access mechanism with the channel detection time between the shortest and the longest among the three target channel access mechanisms is used for the third bandwidth unit; wherein, the first bandwidth unit is any one of the at least one bandwidth unit, the second bandwidth unit is a bandwidth unit adjacent to the first bandwidth unit, and the third bandwidth unit is a bandwidth unit other than the first bandwidth unit and the second bandwidth unit.

[0356] Optionally, the first type of channel access mechanism is CW-based channel detection;

[0357] The second type of channel access mechanism is single channel detection;

[0358] The third type of channel access mechanism is not to perform channel detection.

[0359] Optionally, the second channel access mechanism includes at least one of a first channel access mechanism and a second channel access mechanism;

[0360] The first channel access mechanism includes: detecting that the channel is idle within a first time period, deeming the detection successful;

[0361] The second channel access mechanism includes: detecting that the channel is idle within a second time period, deeming the detection successful;

[0362] The first duration is greater than the second duration.

[0363] Optionally, the reference signal includes at least one of the following: PRS; SRS for positioning; SL PRS; SL SRS for positioning.

[0364] For a detailed introduction to step 4101, please refer to the contents of the embodiment shown in FIG. 2A .

[0365] In this embodiment or example, unless there is any contradiction, each step can be independent, arbitrarily combined or exchanged in order, the optional methods or optional examples can be arbitrarily combined, and can be arbitrarily combined with any steps of other embodiments or other examples.

[0366] Figure 5 is a flow chart of a channel detection method according to an embodiment of the present disclosure. As shown in Figure 5, the embodiment of the present disclosure relates to a channel detection method for a communication system including a first device and a third device. The method includes at least one of the following:

[0367] Step 5101: The third device sends indication information to the first device, where the indication information is used to determine at least one target channel access mechanism; the target channel access mechanism is used to perform channel detection on a spectrum resource corresponding to a reference signal; wherein the spectrum resource corresponding to the reference signal is a shared spectrum resource;

[0368] Step 5102: The first device determines at least one target channel access mechanism based on the indication information.

[0369] Step 5103: The first device performs channel detection on the spectrum resources corresponding to the reference signal based on the target channel access mechanism; wherein the spectrum resources corresponding to the reference signal are shared spectrum resources.

[0370] Step 5104: The first device sends a reference signal on a first channel, where the first channel includes a channel that the first device successfully accesses through a target channel access mechanism.

[0371] Optional implementations of steps 5101 to 5103 may refer to the steps in any one or more of the embodiments in FIG. 2A and FIG. 3A-FIG . 3B , and other related parts of the embodiments involved in FIG. 4A-4B .

[0372] In some embodiments, the above method may include the method described in the above embodiments of the communication system side, terminal side, network device side, etc., which will not be repeated here.

[0373] The channel detection method involved in the embodiments of the present disclosure may include at least one of steps S5101 to S5108. For example, step S5101 may be implemented as an independent embodiment, step S5102 may be implemented as an independent embodiment, and steps S5101+S5102 may be implemented as independent embodiments, but are not limited thereto.

[0374] In this embodiment or example, unless there is any contradiction, each step can be independent, arbitrarily combined or exchanged in order, the optional methods or optional examples can be arbitrarily combined, and can be arbitrarily combined with any steps of other embodiments or other examples.

[0375] The following is an exemplary introduction to the above method.

[0376] Positioning reference signals are PRS, SRS, SL-PRS, and SL-SRS. For PRS, the execution entity is the TRP (base station); for SRS, SL-PRS, and SL-SRS, the execution entity is the UE, which can be a regular UE or a PRU (positioning reference unit).

[0377] 1. The first device determines a frequency domain resource corresponding to a positioning reference signal and at least one bandwidth unit included in the frequency domain resource.

[0378] The method for determining frequency domain resources and bandwidth units is described in points 7 to 10 below.

[0379] 2. Based on the first method, the number of the bandwidth units is greater than or equal to 2, that is, method 1: the bandwidth unit does not increase, for example, 20 MHz is still used, so that the frequency domain resources will include multiple bandwidth units.

[0380] 3. Based on 2 (this also corresponds to the case where there is only one bandwidth unit), the channel access mechanism corresponding to each bandwidth unit is the same.

[0381] For PRS / SRS with a period less than or equal to 20 ms:

[0382] The first type of channel access mechanism: Type 1. The principle is as follows: The eNB / gNB may transmit a transmission after first sensing the channel to be idle during the sensing slot durations of a defer duration T d (16 us + m additional sensing slot durations such as 9 us) and after the counter N is zero in step 4. The counter N is adjusted by sensing the channel for additional sensing slot duration(s) according to the steps below:

[0383] 1) Set N = N init , where N init is a random number uniformly distributed between 0 and CW p , and go to step 4;

[0384] 2) If N > 0 and the eNB / gNB chooses to decrement the counter, set N = N - 1;

[0385] 3) Sense the channel for an additional sensing slot duration, and if the additional sensing slot duration is idle, go to step 4; else, go to step 5;

[0386] 4) If N = 0, stop; else, go to step 2.

[0387] 5)sense the channel until either a busy sensing slot is detected within an additional defer duration T d or all the sensing slots of the additional defer duration T d are detected to be idle;

[0388] 6)if the channel is sensed to be idle during all the sensing slot durations of the additional defer duration T d ,go to step 4; else,go to step 5;

[0389] N of each bandwidth unit is independently determined, i.e., it is randomly determined according to its own CW.

[0390] The value of N is the same for each bandwidth unit, and the value of N is determined based on the largest CW among all CWs of the multiple bandwidth units.

[0391] For PRS / SRS with a period greater than 20ms:

[0392] Based on the second type of channel access mechanism: Type 2A or 2B, for example, it only needs to detect that the channel is idle within 25us or 16us

[0393] 4. Based on 2, the channel access mechanism corresponding to each bandwidth unit can be different.

[0394] Multiple bandwidth units correspond to two channel access mechanisms, where one bandwidth unit detects idleness and the other bandwidth units have a looser detection mechanism.

[0395] For example, the first unit is based on the first type Type 1, and the second unit is based on the second type such as one-shot detection (Type 2A, Type 2B), and even Type 2C does not need to be detected.

[0396] The second unit is the one next to the first unit, and the other second units have the same mechanism as the first unit.

[0397] Or the second unit is all other units.

[0398] Or the first unit is based on Type 2A, and the second unit is based on Type 2B or Type 2C.

[0399] Unit 2 is the same as above.

[0400] Or multiple bandwidth units correspond to three mechanisms, where one bandwidth unit detects idleness. For example, if the first unit detects idleness based on Type 1, the second unit adjacent to it does not need to be detected (Type 2C), and the third unit adjacent to the second unit performs one-shot detection (Type 2A or 2B); or if the first unit detects idleness based on Type 2A, the second unit adjacent to it does not need to be detected (Type 2C), and the third unit adjacent to the second unit performs one-shot detection (Type 2B).

[0401] 5. Based on the first method, increase the value of the bandwidth unit, that is, method 2: the size of the channel access bandwidth unit can be increased. For example, the bandwidth of the positioning reference signal can be directly set to one channel access bandwidth unit. In this way, either all detections are idle or all detections are not idle.

[0402] Different bandwidth units have different idle detection thresholds. The larger the bandwidth, the more difficult it is to detect that the channel is idle.

[0403] 6. The above method applies to situations where the transmitter initiates channel occupation, and also to situations where the opposite party initiates channel occupation and provides channel sharing. When using PRS, the transmitter is the base station, and the opposite party is the UE. When using SRS, the transmitter is the UE, and the opposite party is the base station. When using SL-PRS / SL-SRS, the transmitter is the UE, and the opposite party is also a UE, based on the UE communicating with the transmitting UE.

[0404] When sharing a channel, the interval between transmissions with the other end is less than 16µs, and the number of symbols occupied by the positioning reference signal cannot exceed 2, 4, and 8 symbols for subcarrier spacing of 15, 30, and 60kHz.

[0405] Using Type 2C.

[0406] When the interval is between 16us and 25us, at least the first unit adopts Type 2A or 2B.

[0407] Method for determining frequency domain resources and bandwidth units:

[0408] If the reference signal for positioning purposes is PRS.

[0409] 7. The terminal receives the frequency domain resource configuration information of the PRS sent by the network device, and determines multiple bandwidth units in the frequency domain resources.

[0410] The configured frequency domain resources are determined based on the PRS configuration information sent by the LMF through the LPP, and the bandwidth units contained in the configured frequency domain resources are determined by the network configuration (LMF or base station) or the default rules.

[0411] For example, the network configures the starting position, bandwidth and / or end position of each bandwidth unit. Generally, only one of the bandwidth and end position is required;

[0412] Or the network device configures the starting position and bandwidth or ending position of the interval frequency domain between every two bandwidth units.

[0413] Because the starting position of the first bandwidth unit is the same as the starting position of the configured frequency domain resources, and the ending position of the first bandwidth unit is the starting position of the first interval frequency domain; the starting position of the second bandwidth unit is the ending position of the first interval frequency domain, and the ending position of the second bandwidth unit is the starting position of the second interval frequency domain, and so on.

[0414] or default rules or agreement provisions.

[0415] The protocol specifies the bandwidth of each bandwidth unit and the bandwidth of the interval frequency domain.

[0416] It should be noted that the bandwidth units of the PRS resources of each TRP are divided in the same way. The specification may also include different situations.

[0417] If the reference signal for positioning is SRS.

[0418] 8. The terminal receives the frequency domain resource configuration information of the SRS sent by the base station, and determines a plurality of bandwidth units in the frequency domain resources.

[0419] The configured resources are configured by the base station through at least one of RRC signaling, MACCE and DCI. The bandwidth units included in the configured frequency domain resources are determined by network configuration (base station) or default rules.

[0420] For example, the network configures the starting position, bandwidth and / or end position of each bandwidth unit. Generally, only one of the bandwidth and end position is required;

[0421] Or the network device configures the starting position and bandwidth or ending position of the interval frequency domain between every two bandwidth units.

[0422] Because the starting position of the first bandwidth unit is the same as the starting position of the configured frequency domain resources, and the ending position of the first bandwidth unit is the starting position of the first interval frequency domain; the starting position of the second bandwidth unit is the ending position of the first interval frequency domain, and the ending position of the second bandwidth unit is the starting position of the second interval frequency domain... and so on.

[0423] or default rules or agreement provisions.

[0424] The protocol specifies the bandwidth of each bandwidth unit and the bandwidth of the interval frequency domain.

[0425] It should be noted that: the bandwidth unit division method of SRS sent to different TRPs is the same, the resources of SRS sent to different TRPs are included in an SRS resource set, or the beam directions corresponding to SRS resources sent to different TRPs are different.

[0426] If the positioning reference signal is SLPRS or SLSRS.

[0427] 9. The first terminal (which can be a general terminal or a PRU, positioning reference unit) receives frequency domain resource configuration information of SL-PRS / SL-SRS sent by at least one second terminal (which can be a general terminal or a PRU, positioning reference unit) or a network device, and determines multiple bandwidth units in the frequency domain resources.

[0428] The configured frequency domain resources are determined based on the PRS configuration information sent by the LMF through the LPP, or the configured frequency domain resources are determined by the base station based on at least one of RRC, MACCE and DCI, or the configured frequency domain resources are determined by the second terminal through SLRRC, SLMACCE, SidelinkControlInformation (SCI). The bandwidth unit included in the configured frequency domain resources is determined by the network configuration (LMF or base station) or the second terminal, or the default rule.

[0429] For example, the network device or the second terminal configures the starting position, bandwidth and / or ending position of each bandwidth unit. Generally, only one of the bandwidth and ending position is required.

[0430] Or the network device or the second terminal configures the starting position and bandwidth or the ending position of the interval frequency domain between every two bandwidth units.

[0431] Because the starting position of the first bandwidth unit is the same as the starting position of the configured frequency domain resources, and the ending position of the first bandwidth unit is the starting position of the first interval frequency domain; the starting position of the second bandwidth unit is the ending position of the first interval frequency domain, and the ending position of the second bandwidth unit is the starting position of the second interval frequency domain, and so on.

[0432] Or default rules or protocol provisions. The protocol stipulates the bandwidth of each bandwidth unit and the bandwidth of the interval frequency domain.

[0433] It should be noted that: the bandwidth units of the SL-PRS / SL-SRS resources sent by each second terminal are divided in the same manner. The specification may also include different situations.

[0434] 10. Background. The configuration information of the positioning reference signal includes at least one of the following information:

[0435] Time domain parameters; period; starting time slot; starting symbol position; number of occupied symbols; number of repetitions; interval between repetitions

[0436] Frequency domain parameters (i.e., frequency domain resources); frequency domain position (freqDomainPosition); frequency domain offset (freqDomainShift); frequency hopping (freqHopping); comb parameters include at least one of the following: comb value (combOffset), cyclic shift (cyclicShift); P0 and alpha, pathlossRS are all power control related parameters; QCLinformation, spatialrelationinformation; reference signal resource ID, reference signal resource setID.

[0437] The embodiments of the present disclosure further provide an apparatus for implementing any of the above methods. For example, an apparatus is provided, comprising units or modules for implementing each step performed by a terminal in any of the above methods. For another example, another apparatus is provided, comprising units or modules for implementing each step performed by a network device (e.g., an access network device, a core network function node, a core network device, etc.) in any of the above methods.

[0438] It should be understood that the division of the various units or modules in the above device is merely a division of logical functions. In actual implementation, they may be fully or partially integrated into a physical entity, or they may be physically separated. In addition, the units or modules in the device may be implemented in the form of a processor calling software: for example, the device includes a processor, the processor is connected to a memory, and the memory stores instructions. The processor calls the instructions stored in the memory to implement any of the above methods or implement the functions of the various units or modules of the above device, wherein the processor is, for example, a general-purpose processor, such as a central processing unit (CPU) or a microprocessor, and the memory is a memory within the device or a memory outside the device. Alternatively, the units or modules in the device can be implemented in the form of hardware circuits, and the functions of some or all of the units or modules can be realized by designing the hardware circuits. The above-mentioned hardware circuits can be understood as one or more processors; for example, in one implementation, the above-mentioned hardware circuit is an application-specific integrated circuit (ASIC), which realizes the functions of some or all of the above units or modules by designing the logical relationship of the components in the circuit; for example, in another implementation, the above-mentioned hardware circuit can be realized by a programmable logic device (PLD). Taking a field programmable gate array (FPGA) as an example, it can include a large number of logic gate circuits, and the connection relationship between the logic gate circuits is configured by configuring the configuration file, thereby realizing the functions of some or all of the above units or modules. All units or modules of the above devices can be realized in the form of software called by the processor, or in the form of hardware circuits, or in part by the form of software called by the processor, and the rest by hardware circuits.

[0439] In the embodiments of the present disclosure, the processor is a circuit with signal processing capabilities. In one implementation, the processor can be a circuit with instruction reading and execution capabilities, such as a central processing unit (CPU), a microprocessor, a graphics processing unit (GPU) (which can be understood as a microprocessor), or a digital signal processor (DSP). In another implementation, the processor can implement certain functions through the logical relationship of the hardware circuit. The logical relationship of the above-mentioned hardware circuit is fixed or reconfigurable. For example, the processor is a hardware circuit implemented by an application-specific integrated circuit (ASIC) or a programmable logic device (PLD), such as an FPGA. In a reconfigurable hardware circuit, the process of the processor loading a configuration document and implementing the hardware circuit configuration can be understood as the process of the processor loading instructions to implement the functions of some or all of the above units or modules. In addition, it can also be a hardware circuit designed for artificial intelligence, which can be understood as an ASIC, such as a neural network processing unit (NPU), a tensor processing unit (TPU), a deep learning processing unit (DPU), etc.

[0440] FIG6A is a schematic diagram of the structure of the first device proposed in an embodiment of the present disclosure. As shown in FIG6A , it includes:

[0441] a processing module, configured to determine at least one target channel access mechanism;

[0442] The processing module is further configured to perform channel detection on the spectrum resources corresponding to the reference signal by the target channel access mechanism; wherein the spectrum resources corresponding to the reference signal are shared spectrum resources.

[0443] Optionally, the above-mentioned processing module is used to execute the steps related to "processing" performed by the first device in any of the above methods. Optionally, the first device also includes at least one of a receiving module and a sending module. The above-mentioned receiving module is used to execute the steps related to "receiving" performed by the first device in any of the above methods. The above-mentioned sending module is used to execute the steps related to "sending" performed by the first device in any of the above methods. No further details are given here.

[0444] FIG6B is a schematic diagram of the structure of the third device proposed in an embodiment of the present disclosure. As shown in FIG6B , it includes:

[0445] A sending module is used to send indication information to the first device, where the indication information is used to determine at least one target channel access mechanism; the target channel access mechanism is used to perform channel detection on the spectrum resources corresponding to the reference signal; wherein the spectrum resources corresponding to the reference signal are shared spectrum resources.

[0446] Optionally, the above-mentioned sending module is used to execute the steps related to "sending" performed by the first device 102 in any of the above methods. Optionally, the second device also includes at least one of a processing module and a receiving module. The above-mentioned receiving module is used to execute the steps related to "receiving" performed by the first device 102 in any of the above methods. The above-mentioned processing module is used to execute the steps related to processing performed by the first device 102 in any of the above methods. No further details are given here.

[0447] Figure 7A is a schematic diagram of the structure of a communication device 7100 proposed in an embodiment of the present disclosure. Communication device 7100 can be a network device (e.g., an access network device, a core network device, etc.), a terminal (e.g., a user equipment, etc.), a chip, a chip system, or a processor that supports a network device to implement any of the above methods, or a chip, a chip system, or a processor that supports a terminal to implement any of the above methods. Communication device 7100 can be used to implement the methods described in the above method embodiments. For details, please refer to the description of the above method embodiments.

[0448] As shown in Figure 7A, the communication device 7100 includes one or more processors 7101. The processor 7101 can be a general-purpose processor or a dedicated processor, for example, a baseband processor or a central processing unit. The baseband processor can be used to process communication protocols and communication data, and the central processing unit can be used to control the communication device (such as a base station, a baseband chip, a terminal device, a terminal device chip, a DU or a CU, etc.), execute programs, and process program data. The processor 7101 is used to call instructions to enable the communication device 7100 to perform any of the above methods.

[0449] In some embodiments, the communication device 7100 further includes one or more memories 7102 for storing instructions. Optionally, all or part of the memories 7102 may be located outside the communication device 7100.

[0450] In some embodiments, the communication device 7100 further includes one or more transceivers 7103. When the communication device 7100 includes one or more transceivers 7103, the communication steps such as sending and receiving in the above method are performed by the transceiver 7103, and the other steps are performed by the processor 7101.

[0451] In some embodiments, a transceiver may include a receiver and a transmitter, which may be separate or integrated. Optionally, the terms transceiver, transceiver unit, transceiver, and transceiver circuit may be used interchangeably; the terms transmitter, transmitting unit, transmitter, and transmitting circuit may be used interchangeably; and the terms receiver, receiving unit, receiver, and receiving circuit may be used interchangeably.

[0452] Optionally, the communication device 7100 further includes one or more interface circuits 7104, which are connected to the memory 7102. The interface circuits 7104 may be configured to receive signals from the memory 7102 or other devices, and may be configured to send signals to the memory 7102 or other devices. For example, the interface circuits 7104 may read instructions stored in the memory 7102 and send the instructions to the processor 7101.

[0453] The communication device 7100 described in the above embodiment may be a network device or a terminal, but the scope of the communication device 7100 described in the present disclosure is not limited thereto, and the structure of the communication device 7100 may not be limited by FIG. 7a. The communication device may be an independent device or may be part of a larger device. For example, the communication device may be: 1) an independent integrated circuit IC, or a chip, or a chip system or subsystem; (2) a collection of one or more ICs, optionally, the above IC collection may also include a storage component for storing data or programs; (3) an ASIC, such as a modem; (4) a module that can be embedded in other devices; (5) a receiver, a terminal device, an intelligent terminal device, a cellular phone, a wireless device, a handheld device, a mobile unit, an in-vehicle device, a network device, a cloud device, an artificial intelligence device, etc.; (6) others, etc.

[0454] 7B is a schematic diagram of the structure of a chip 7200 proposed in an embodiment of the present disclosure. If the communication device 7100 can be a chip or a chip system, please refer to the schematic diagram of the structure of the chip 7200 shown in FIG7B , but the present disclosure is not limited thereto.

[0455] The chip 7200 includes one or more processors 7201 , and the processor 7201 is used to call instructions so that the chip 7200 executes any of the above methods.

[0456] In some embodiments, chip 7200 further includes one or more interface circuits 7202, which are connected to memory 7203. Interface circuit 7202 can be used to receive signals from memory 7203 or other devices, and can be used to send signals to memory 7203 or other devices. For example, interface circuit 7202 can read instructions stored in memory 7203 and send the instructions to processor 7201. Optionally, the terms interface circuit, interface, transceiver pin, and transceiver are interchangeable.

[0457] In some embodiments, the chip 7200 further includes one or more memories 7203 for storing instructions. Alternatively, all or part of the memories 7203 may be located outside the chip 7200.

[0458] The present disclosure also proposes a storage medium having instructions stored thereon. When the instructions are executed on the communication device 7100, the communication device 7100 executes any of the above methods. Optionally, the storage medium is an electronic storage medium. Optionally, the storage medium is a computer-readable storage medium, but is not limited thereto and may also be a storage medium readable by other devices. Optionally, the storage medium may be a non-transitory storage medium, but is not limited thereto and may also be a temporary storage medium.

[0459] The present disclosure also provides a program product, which, when executed by the communication device 7100, enables the communication device 7100 to perform any of the above methods. Optionally, the program product is a computer program product.

[0460] The present disclosure also proposes a computer program, which, when executed on a computer, causes the computer to perform any one of the above methods.

[0461] In the above embodiments, all or part of the embodiments can be implemented by software, hardware, firmware or any combination thereof. When implemented using software, all or part of the embodiments can be implemented in the form of 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 the present 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 transmitted from one computer-readable storage medium to another computer-readable storage medium. For example, the computer program can be transmitted from one website, computer, server or data center to another website, computer, server or data center via a wired (e.g., coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) method. The computer-readable storage medium can be any available medium that can be accessed by a computer or a data storage device such as a server or data center that includes one or more available media integrated therein. The available medium may be a magnetic medium (eg, a floppy disk, a hard disk, a magnetic tape), an optical medium (eg, a high-density digital video disc (DVD)), or a semiconductor medium (eg, a solid state disk (SSD)).

[0462] Those skilled in the art will appreciate that the units and algorithm steps of each example 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 performed in hardware or software depends on the specific application and design constraints of the technical solution. Professionals and technicians 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.

[0463] Those skilled in the art will clearly understand that, for the convenience and brevity of description, the specific working processes of the systems, devices and units described above can refer to the corresponding processes in the aforementioned method embodiments and will not be repeated here.

[0464] The above description is merely a specific embodiment of the present disclosure, but the scope of protection of the present disclosure is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in this disclosure should be included in the scope of protection of the present disclosure. Therefore, the scope of protection of the present disclosure should be based on the scope of protection of the claims.

Claims

1. A channel detection method, characterized in that: The method comprises: determining at least one target channel access mechanism; Channel detection is performed on the spectrum resources corresponding to the reference signal based on the target channel access mechanism, and the spectrum resources corresponding to the reference signal are shared spectrum resources.

2. The method according to claim 1, characterized in that The target channel access mechanism includes a first type of channel access mechanism, a second type of channel access mechanism, or a third type of channel access mechanism; Among them, the time required for channel detection of the first type of channel access mechanism is greater than or equal to the time required for channel detection of the second type of channel access mechanism, and the time required for channel detection of the second type of channel access mechanism is greater than the time required for channel detection of the third type of channel access mechanism.

3. The method according to claim 2, characterized in that The method further comprises: The first device determines a spectrum resource corresponding to the reference signal.

4. The method according to claim 3, characterized in that The method further comprises: The first device determines at least one bandwidth unit included in the spectrum resources.

5. The method according to claim 4, characterized in that The spectrum resource includes at least two bandwidth units, the target channel access mechanism is one, and the one target channel access mechanism is used for the at least two bandwidth units; The spectrum resources include one bandwidth unit, the target channel access mechanism is one, and the one target channel access mechanism is used for the one bandwidth unit.

6. The method according to claim 5, characterized in that The determining of at least one target channel access mechanism comprises: A target channel access mechanism is determined based on the period of the reference signal.

7. The method according to claim 6, characterized in that The determining a target channel access mechanism based on the period of the reference signal includes at least one of the following: The first type of channel access mechanism is determined as the target channel access mechanism, and the period of the reference signal is less than or equal to a first value; or, the second type of channel access mechanism is determined as the target channel access mechanism, and the period of the reference signal is greater than the first value.

8. The method according to claim 4, characterized in that The spectrum resources include at least two bandwidth units, and the target channel access mechanisms are at least two; the at least two target channel access mechanisms are used for different bandwidth units.

9. The method according to claim 8, characterized in that There are two target channel access mechanisms, and the channel detection time required for the two target channel access mechanisms is different. The target channel access mechanism with the longest channel detection time among the two target channel access mechanisms is used for the first bandwidth unit, the target channel access mechanism with the shortest channel detection time among the two target channel access mechanisms is used for the second bandwidth unit, and the target channel access mechanism with the longest channel detection time among the two target channel access mechanisms is also used for the third bandwidth unit; wherein, the first bandwidth unit is any one of the at least one bandwidth unit, the second bandwidth unit is a bandwidth unit adjacent to the first bandwidth unit, and the third bandwidth unit is a bandwidth unit other than the first bandwidth unit and the second bandwidth unit; There are two target channel access mechanisms, and the channel detection time required for the two target channel access mechanisms is different. The target channel access mechanism with the longest channel detection time required among the two target channel access mechanisms is used for the first bandwidth unit, and the target channel access mechanism with the shortest channel detection time required among the two target channel access mechanisms is used for the second bandwidth unit; wherein the first bandwidth unit is any one of the at least one bandwidth unit, and the second bandwidth unit is a bandwidth unit other than the first bandwidth unit; There are three target channel access mechanisms, and the channel detection times required for the three target channel access mechanisms are different. The target channel access mechanism with the longest channel detection time among the three target channel access mechanisms is used for the first bandwidth unit, the target channel access mechanism with the shortest channel detection time among the three target channel access mechanisms is used for the second bandwidth unit, and the target channel access mechanism with a channel detection time between the shortest and the longest among the three target channel access mechanisms is used for the third bandwidth unit; wherein the first bandwidth unit is any one of the at least one bandwidth unit, the second bandwidth unit is a bandwidth unit adjacent to the first bandwidth unit, and the third bandwidth unit is a bandwidth unit other than the first bandwidth unit and the second bandwidth unit.

10. The method according to any one of claims 2 to 9, characterized in that: The second device initiates channel sharing to the first device, and the determining of at least one target channel access mechanism includes at least one of the following: The first time interval is less than the second value, and the time domain length occupied by the reference signal is less than or equal to N symbols, where N is a positive integer, and the third type of channel access mechanism is determined as the target channel access mechanism; wherein the first time interval is: the time interval between the time when the first device sends the reference signal and the time when the first device receives the transmission of the second device; The first time interval is greater than or equal to the second value and less than the third value, and the second type of channel access mechanism is determined as the target channel access mechanism; The first time interval is greater than or equal to the third value, and the first type of channel access mechanism is determined as the target channel access mechanism.

11. The method according to any one of claims 2 to 10, characterized in that: The first type of channel access mechanism is channel detection based on contention window CW; The second type of channel access mechanism is single channel detection; The third type of channel access mechanism is not to perform channel detection.

12. The method according to any one of claims 2 to 11, characterized in that: The second type of channel access mechanism includes at least one of a first channel access mechanism and a second channel access mechanism; The first channel access mechanism includes: detecting that the channel is idle within a first time period, deeming the detection successful; The second channel access mechanism includes: detecting that the channel is idle within a second time period, and considering the detection successful; The first duration is greater than the second duration.

13. The method according to any one of claims 1 to 12, characterized in that: The reference signal includes at least one of the following: Positioning reference signal PRS; Sounding reference signal SRS used for positioning; Sidelink SLPRS; SLSRS for positioning.

14. The method according to any one of claims 1 to 13, characterized in that: The determining of at least one target channel access mechanism comprises: Indication information sent by a third device is received, where the indication information is used to determine at least one target channel access mechanism.

15. A channel detection method, characterized in that: The method comprises: Send indication information, where the indication information is used to determine at least one target channel access mechanism; the target channel access mechanism is used to perform channel detection on the spectrum resources corresponding to the reference signal; wherein the spectrum resources corresponding to the reference signal are shared spectrum resources.

16. The method according to claim 15, characterized in that The target channel access mechanism includes a first type of channel access mechanism, a second type of channel access mechanism, or a third type of channel access mechanism; Among them, the time required for channel detection of the first type of channel access mechanism is greater than or equal to the time required for channel detection of the second type of channel access mechanism, and the time required for channel detection of the second type of channel access mechanism is greater than the time required for channel detection of the third type of channel access mechanism.

17. The method according to claim 16, characterized in that The indication information is used to determine at least one target channel access mechanism, including any one of the following: The spectrum resource includes at least two bandwidth units, the indication information is used to determine a target channel access mechanism, and the target channel access mechanism is used for the at least two bandwidth units; The spectrum resources include a bandwidth unit, the indication information is used to determine a target channel access mechanism, and the target channel access mechanism is used for the bandwidth unit.

18. The method according to claim 17, characterized in that The indication information is used to determine at least one target channel access mechanism, including: The spectrum resources include at least two bandwidth units, and the indication information is used to determine at least two target channel access mechanisms; the at least two target channel access mechanisms are used for different bandwidth units.

19. The method according to claim 18, characterized in that The indication information is used to determine at least two target channel access mechanisms, including at least one of the following: The indication information is used to determine two target channel access mechanisms, the two target channel access mechanisms have different channel detection time lengths, the target channel access mechanism with the longest channel detection time length among the two target channel access mechanisms is used for the first bandwidth unit, and the target channel access mechanism with the shortest channel detection time length among the two target channel access mechanisms is used for the second bandwidth unit. The target channel access mechanism for which the channel detection time is longest in the channel access mechanism is also used for a third bandwidth unit; wherein the first bandwidth unit is any one of the at least one bandwidth unit, the second bandwidth unit is a bandwidth unit adjacent to the first bandwidth unit, and the third bandwidth unit is a bandwidth unit other than the first bandwidth unit and the second bandwidth unit; The indication information is used to determine two target channel access mechanisms, the two target channel access mechanisms have different channel detection time lengths, the target channel access mechanism with the longest channel detection time length among the two target channel access mechanisms is used for the first bandwidth unit, and the target channel access mechanism with the shortest channel detection time length among the two target channel access mechanisms is used for the second bandwidth unit; wherein the first bandwidth unit is any one of the at least one bandwidth unit, and the second bandwidth unit is a bandwidth unit other than the first bandwidth unit; The indication information is used to determine three target channel access mechanisms, the three target channel access mechanisms have different channel detection time requirements, the target channel access mechanism with the longest channel detection time among the three target channel access mechanisms is used for the first bandwidth unit, the target channel access mechanism with the shortest channel detection time among the three target channel access mechanisms is used for the second bandwidth unit, and the target channel access mechanism with a channel detection time between the shortest and the longest among the three target channel access mechanisms is used for the third bandwidth unit; wherein the first bandwidth unit is any one of the at least one bandwidth unit, the second bandwidth unit is a bandwidth unit adjacent to the first bandwidth unit, and the third bandwidth unit is a bandwidth unit other than the first bandwidth unit and the second bandwidth unit.

20. The method according to any one of claims 15 to 19, characterized in that: The first type of channel access mechanism is CW-based channel detection; The second type of channel access mechanism is single channel detection; The third type of channel access mechanism is not to perform channel detection.

21. The method according to any one of claims 15 to 20, characterized in that: The second type of channel access mechanism includes at least one of a first channel access mechanism and a second channel access mechanism; The first channel access mechanism includes: detecting that the channel is idle within a first time period, deeming the detection successful; The second channel access mechanism includes: detecting that the channel is idle within a second time period, and considering the detection successful; The first duration is greater than the second duration.

22. The method according to any one of claims 15 to 21, characterized in that: The reference signal includes at least one of the following: PRS; SRS for positioning; SL PRS; SL SRS for positioning.

23. A channel detection method, characterized in that: Applied to a communication system, the communication system includes a first device and a third device, and the method includes at least one of the following: The third device sends indication information to the first device, where the indication information is used to determine at least one target channel access mechanism; the target channel access mechanism is used to perform channel detection on the spectrum resources corresponding to the reference signal; wherein the spectrum resources corresponding to the reference signal are shared spectrum resources; The first device determines at least one target channel access mechanism based on the indication information; The first device performs channel detection on the spectrum resources corresponding to the reference signal based on the target channel access mechanism; wherein the spectrum resources corresponding to the reference signal are shared spectrum resources; The first device sends a reference signal on a first channel, where the first channel includes a channel successfully accessed by the first device through the target channel access mechanism.

24. A first device, comprising: a processing module, configured to determine at least one target channel access mechanism; The processing module is also used for the target channel access mechanism to perform channel detection on the spectrum resources corresponding to the reference signal; wherein the spectrum resources corresponding to the reference signal are shared spectrum resources.

25. A third device, comprising: A sending module, configured to send indication information to the first device, wherein the indication information is used to determine at least one target channel access mechanism; The target channel access mechanism is used to perform channel detection on the spectrum resources corresponding to the reference signal; wherein the spectrum resources corresponding to the reference signal The source is a shared spectrum resource.

26. A communication device, characterized in that: include: One or more processors; The processor is used to call instructions so that the communication device executes the channel detection method described in any one of claims 1-13 and 14-26.

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