A method, device and readable storage medium for transmitting sidelink data

Abstract

The present disclosure provides a method, device and readable storage medium for transmitting sidelink data, which are applied to the field of wireless communication technology. The method includes: determining the value of N, where N is the number of frequency domain resource units to be determined on the transmission band of the user equipment; the transmission band is located in an unlicensed frequency band, and the transmission band includes M listen-before-talk LBT subbands, and the frequency domain resources in the transmission band are determined according to the frequency domain resource position of at least one of the LBT subbands; the frequency domain resources include N frequency domain resource units, and the number of LBT subbands occupied by the frequency domain resources is less than or equal to the M; and the sidelink data is transmitted on the frequency domain resources. In the present disclosure, when determining the frequency domain resources in the transmission band, considering the influence of the number of occupied LBT subbands, it can be determined that the frequency domain resources occupy different numbers of LBT subbands to meet different sidelink data transmission requirements.

Description

Technical Field

[0001] The present disclosure relates to wireless communication technology, and more particularly to a method, device and readable storage medium for transmitting sidelink data. Background Art

[0002] In some wireless communication systems, such as the new radio (NR) system, communication between user equipment (UE) is supported through a sidelink (SL, also called a direct link), and enhanced communication of the sidelink can be further supported.

[0003] However, some sidelink communications can only use licensed spectrum and dedicated spectrum, and cannot use shared spectrum (also known as unlicensed spectrum). If sidelink communications are required on shared spectrum, the specified occupied bandwidth (OCB) requirements must be met. For example, relevant regulations in some regions stipulate that when user equipment uses certain unlicensed spectrum for data transmission, the occupied bandwidth (including the bandwidth of 99% of the signal power) must reach 80%-100% of the nominal bandwidth.

[0004] Consideration needs to be given to improving the transmission performance of user equipment performing sidelink communications on a shared spectrum. Summary of the invention

[0005] The present disclosure provides a method, an apparatus, and a readable storage medium for transmitting sidelink data.

[0006] In a first aspect, a method for transmitting sidelink data is provided, which is performed by a user equipment and includes:

[0007] Determine a value of N, where N is the number of frequency domain resource units to be determined by the user equipment on a transmission band; the transmission band is located in an unlicensed frequency band, the transmission band includes M listen-before-talk LBT subbands, and both N and M are integers greater than 1;

[0008] Determine the frequency domain resources within the transmission band according to the frequency domain resource position of at least one of the LBT sub-bands; the frequency domain resources include N frequency domain resource units, and the number of LBT sub-bands occupied by the frequency domain resources is less than or equal to the M;

[0009] The sidelink data is transmitted on the frequency domain resources.

[0010] In this method, when determining the frequency domain resources within the transmission band, the influence of the number of occupied LBT sub-bands is taken into account, and the number of LBT sub-bands occupied by the frequency domain resources can be determined to meet different side link data transmission requirements. When the number of LBT sub-bands occupied by the frequency domain resources is small, the probability of LBT failure can be reduced. When the number of LBT sub-bands occupied by the frequency domain resources is large, the time-frequency resources can be evenly distributed in the entire communication band to reduce interference.

[0011] In some possible implementations, determining the frequency domain resources within the transmission band according to the frequency domain resource position of at least one of the LBT sub-bands includes:

[0012] Determine N frequency domain resource units located in the same LBT sub-band within the transmission frequency band as the frequency domain resources.

[0013] In some possible implementations, determining the N frequency domain resource units located in the same LBT sub-band within the transmission frequency band as the frequency domain resources includes:

[0014] Determine a first set, where the first set includes multiple candidate resources, the candidate resources include N frequency domain resource units, and the N frequency domain resource units in the candidate resources belong to the same LBT subband;

[0015] Determine one or more candidate resources in the first set as the frequency domain resources.

[0016] In some possible implementations, determining the frequency domain resources within the transmission band according to the frequency domain resource position of at least one of the LBT sub-bands includes:

[0017] Determine a second set, the second set includes multiple candidate resources, the candidate resources include N frequency domain resource units, at least one candidate resource among the multiple candidate resources occupies one LBT subband, and at least one candidate resource among the multiple candidate resources occupies more than one LBT subband;

[0018] Excluding resources from the second set according to the sideline control information SCI received by channel monitoring and the sideline RSRP measurement result associated with the SCI;

[0019] When the time-frequency resource indicated or reserved by the SCI overlaps with a first candidate resource occupying an LBT subband in the second set, and the associated sidelink RSRP measurement result is higher than a first threshold, excluding the first candidate resource from the second set; and,

[0020] When the time-frequency resource indicated or reserved by the SCI overlaps with a second candidate resource occupying more than one LBT subband in the second set, and the associated sidelink RSRP measurement result is higher than a second threshold, excluding the second candidate resource from the second set;

[0021] Determine a third set, where the third set includes candidate resources remaining after removing the first candidate resource and / or the second candidate resource from the second set;

[0022] Determine the frequency domain resources from the third set;

[0023] The first threshold is greater than the second threshold.

[0024] In some possible implementations, the method further includes:

[0025] The second threshold is determined according to the number of LBT subbands occupied by the second candidate resources.

[0026] In some possible implementations, the number of LBT subbands occupied by the second candidate resource is negatively correlated with the second threshold.

[0027] In some possible implementations, the method further includes:

[0028] The second threshold is determined according to a protocol agreement, or downlink control configuration information sent by a network device is received, where the downlink control configuration information includes a value for indicating the second threshold.

[0029] In some possible implementations, determining the frequency domain resources within the transmission band according to the frequency domain resource position of at least one of the LBT sub-bands includes:

[0030] Determine a second set, the second set including multiple candidate resources, each candidate resource including N frequency domain resource units, at least one candidate resource among the multiple candidate resources occupies one LBT subband, and at least one candidate resource among the multiple candidate resources occupies more than one LBT subband;

[0031] Excluding resources from the second set according to the sideline control information SCI received by channel monitoring and the sideline RSRP measurement result associated with the SCI;

[0032] When the time-frequency resource indicated or reserved by the SCI overlaps with a third candidate resource in the second set, and the associated sidelink RSRP measurement result is higher than a third threshold, excluding the third candidate resource from the second set;

[0033] Determine a third set, where the third set includes candidate resources remaining after removing the third candidate resource from the second set;

[0034] When the number of candidate resources in the third set is less than the fourth threshold, the following steps are performed at least once, or the following steps are repeated until the number of candidate resources in the fourth set is not less than the fifth threshold:

[0035] Determine a sixth threshold value; wherein the sixth threshold value is greater than the sixth threshold value of the previous cycle and greater than the third threshold value;

[0036] When the time-frequency resource indicated or reserved by the SCI overlaps with a fourth candidate resource occupying an LBT subband in the second set, and the associated sidelink RSRP measurement result is higher than a sixth threshold, excluding the first candidate resource from the second set;

[0037] When the time-frequency resource indicated or reserved by the SCI overlaps with a fifth candidate resource occupying more than one LBT subband in the second set, and the associated sidelink RSRP measurement result is higher than a third threshold, excluding the first candidate resource from the second set;

[0038] Determine a fourth set, where the fourth set includes remaining candidate resources in the second set after removing the fourth candidate resource and / or the fifth candidate resource;

[0039] The frequency domain resources are determined from the fourth set.

[0040] In some possible implementations, determining the frequency domain resources within the transmission band according to the frequency domain resource position of at least one of the LBT sub-bands includes:

[0041] Determine a first set, where the first set includes multiple candidate resources, the candidate resources include N frequency domain resource units, and the N frequency domain resource units in the candidate resources belong to the same LBT subband;

[0042] Excluding resources from the first set according to the sideline control information SCI received by channel monitoring and the sideline RSRP measurement result associated with the SCI;

[0043] When the time-frequency resource indicated or reserved by the SCI overlaps with a fifth candidate resource occupying one LBT subband in the first set, and the associated sidelink RSRP measurement result is higher than a seventh threshold, excluding the fifth candidate resource from the first set;

[0044] Determine a fifth set, where the fifth set includes candidate resources remaining after resources in the first set are excluded;

[0045] When the number of candidate resources in the fifth set is less than the eighth threshold, determining a second set, wherein the second set includes multiple candidate resources, the candidate resources include N frequency domain resource units, at least one candidate resource among the multiple candidate resources occupies one LBT subband, and at least one candidate resource among the multiple candidate resources occupies more than one LBT subband;

[0046] Excluding resources from the fifth set according to the sideline control information SCI received through channel monitoring and the sideline RSRP measurement result associated with the SCI;

[0047] Determine a sixth set, where the sixth set includes candidate resources remaining after resources in the second set are excluded;

[0048] The frequency domain resources are determined from the sixth set.

[0049] In some possible implementations, determining the frequency domain resources within the transmission band according to the frequency domain resource position of at least one of the LBT sub-bands includes:

[0050] Determine a seventh set, the seventh set including multiple candidate resources, each candidate resource including N frequency domain resource units, the N frequency domain resource units in each candidate resource belong to K LBT subbands, K is an integer less than M, and the time-frequency resources corresponding to the SCI do not have an overlapping area with any candidate resource in the seventh set;

[0051] A candidate resource in the seventh set is determined as the frequency domain resource.

[0052] In some possible implementations, the method further includes:

[0053] The K is determined according to a protocol agreement, or a downlink control signaling sent by a network device is received, where the downlink control signaling includes information for indicating the K.

[0054] In some possible implementations, the method further includes: receiving high-layer signaling sent by a network device, where the high-layer signaling includes information for indicating the N.

[0055] In a second aspect, a communication device is provided. The communication device may be used to execute the steps performed by a user equipment in the first aspect or any possible design of the first aspect. The user equipment may implement the functions in the above methods in the form of a hardware structure, a software module, or a hardware structure plus a software module.

[0056] When the communication device shown in the first aspect is implemented by a software module, the communication device may include:

[0057] A processing module is configured to determine N, where N is the number of frequency domain resource units to be determined by the user equipment on a transmission band; the transmission band is located in an unlicensed frequency band, the transmission band includes M listen-before-talk LBT subbands, and both N and M are integers greater than 1; and is further configured to determine the frequency domain resources within the transmission band according to the frequency domain resource position of at least one of the LBT subbands; the frequency domain resources include N frequency domain resource units, and the number of LBT subbands occupied by the frequency domain resources is less than or equal to the M;

[0058] The transceiver module is configured to transmit sidelink data on the frequency domain resources.

[0059] In a third aspect, a communication device is provided, comprising a processor and a memory; the memory is used to store a computer program; the processor is used to execute the computer program to implement the second aspect or any possible design of the second aspect.

[0060] In a fourth aspect, a computer-readable storage medium is provided, wherein instructions (or computer programs, programs) are stored in the computer-readable storage medium, which, when called and executed on a computer, enables the computer to execute the above-mentioned first aspect or any possible design of the first aspect. BRIEF DESCRIPTION OF THE DRAWINGS

[0061] The drawings described herein are used to provide a further understanding of the embodiments of the present disclosure and constitute a part of this application. The illustrative embodiments of the embodiments of the present disclosure and their descriptions are used to explain the embodiments of the present disclosure and do not constitute an improper limitation on the embodiments of the present disclosure. In the drawings:

[0062] The accompanying drawings herein are incorporated in and constitute a part of the specification, illustrate embodiments consistent with the embodiments of the present disclosure, and together with the description, serve to explain the principles of the embodiments of the present disclosure.

[0063] Figure 1 is a schematic diagram of a wireless communication system architecture provided by an embodiment of the present disclosure;

[0064] Figure 2 is a schematic diagram of the location of an IRB in a shared subband provided by an embodiment of the present disclosure;

[0065] Figure 3 is a schematic diagram of the location of another IRB in a shared subband provided by an embodiment of the present disclosure;

[0066] Figure 4 is a schematic diagram of the location of another IRB in a shared subband provided by an embodiment of the present disclosure;

[0067] Figure 5is a schematic diagram of the location of another IRB in a shared subband provided by an embodiment of the present disclosure;

[0068] Figure 6 is an interactive schematic diagram of a method for transmitting sidelink data provided by an embodiment of the present disclosure;

[0069] Figure 7 is an interactive schematic diagram of another method for transmitting sidelink data provided by an embodiment of the present disclosure;

[0070] Figure 8 is a flowchart of another method for transmitting sidelink data provided by an embodiment of the present disclosure;

[0071] Fig. 9 is a structural diagram of a device for transmitting sidelink data provided by an embodiment of the present disclosure;

[0072] Fig.10 is a structural diagram of another device for transmitting sidelink data provided by an embodiment of the present disclosure;

[0073] Fig.11 is a structural diagram of a device of a network device provided by an embodiment of the present disclosure;

[0074] Fig.12 It is a structural diagram of another network device apparatus provided in an embodiment of the present disclosure. DETAILED DESCRIPTION

[0075] The embodiments of the present disclosure are now further described in conjunction with the accompanying drawings and specific implementation methods.

[0076] Exemplary embodiments will be described in detail herein, examples of which are shown in the accompanying drawings. When the following description refers to the drawings, the same numbers in different drawings represent the same or similar elements unless otherwise indicated. The implementations described in the following exemplary embodiments do not represent all implementations consistent with the embodiments of the present disclosure. Instead, they are merely examples of devices and methods consistent with some aspects of the present disclosure as detailed in the appended claims.

[0077] The terms used in the disclosed embodiments are only for the purpose of describing specific embodiments and are not intended to limit the disclosed embodiments. The singular forms of "a", "an" and "the" used in the disclosed embodiments and the appended claims are also intended to include plural forms unless the context clearly indicates other meanings. It should also be understood that the term "and / or" used herein refers to and includes any or all possible combinations of one or more associated listed items.

[0078] It should be understood that although the terms first, second, third, etc. may be used to describe various information in the disclosed embodiments, these information should not be limited to these terms. These terms are only used to distinguish the same type of information from each other. For example, without departing from the scope of the disclosed embodiments, the first information may also be referred to as the second information, and similarly, the second information may also be referred to as the first information. Depending on the context, the words "if" and "if" as used herein may be interpreted as "at" or "when" or "in response to determination".

[0079] The embodiments of the present disclosure are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present disclosure, and cannot be understood as limiting the present disclosure.

[0080] In order to better understand the direct communication resource selection method and device disclosed in the embodiment of the present application, the communication system to which the embodiment of the present application is applicable is first described below.

[0081] See also Figure 1 In the scenario of direct communication between user devices 101, the network device configures various transmission parameters for data transmission for the user devices 101. One user device 101 acts as a data transmitter, and the other user device 101 acts as a data receiver, and the two perform direct communication. The link for communication between the network device and the user device 101 is an uplink and a downlink, and the link between the user devices 101 is a direct link (sidelink).

[0082] Understandably, Figure 1 The wireless communication system shown is only for schematic illustration. The wireless communication system may also include other network devices, such as core network devices, wireless relay devices, and wireless backhaul devices. Figure 1 The embodiment of the present disclosure does not limit the number of network devices and user devices included in the wireless communication system.

[0083] It can be further understood that the wireless communication system of the embodiment of the present disclosure is a network that provides wireless communication functions. The wireless communication system can adopt different communication technologies, such as code division multiple access (CDMA), wideband code division multiple access (WCDMA), time division multiple access (TDMA), frequency division multiple access (FDMA), orthogonal frequency-division multiple access (OFDMA), single carrier frequency division multiple access (SC-FDMA), carrier sense multiple access / collision avoidance (Carrier Sense Multiple Access with CollisionAvoidance). According to the capacity, rate, delay and other factors of different networks, the network can be divided into a 4G network or a future evolution network, such as a 5G network, which can also be called a new wireless network (New Radio, NR). For the convenience of description, the present disclosure sometimes refers to the wireless communication network as a network.

[0084] Furthermore, the network equipment involved in the present disclosure may also be referred to as a wireless access network device. The wireless access network device may be: a base station, an evolved node B (eNB), a home base station, an access point (AP) in a wireless fidelity (WIFI) system, a wireless relay node, a wireless backhaul node, a transmission point (TP) or a transmission and reception point (TRP), etc. It may also be a gNB in ​​an NR system, or it may also be a component or part of a device constituting a base station. When it is a vehicle-to-everything (V2X) communication system, the network device may also be a vehicle-mounted device. It should be understood that in the embodiments of the present disclosure, the specific technology and specific device form adopted by the network device are not limited.

[0085] Furthermore, the user equipment involved in the present disclosure may also be referred to as a mobile station (MS), a mobile terminal (MT), etc., which is a device that provides voice and / or data connectivity to users. For example, the user equipment may be a handheld device with wireless connection function, a vehicle-mounted device, etc. At present, some examples of user equipment are: a smart phone (Mobile Phone), a pocket computer (Pocket Personal Computer, PPC), a handheld computer, a personal digital assistant (Personal Digital Assistant, PDA), a laptop computer, a tablet computer, a wearable device, or a vehicle-mounted device, etc. In addition, when it is a vehicle-to-everything (V2X) communication system, the user equipment may also be a vehicle-mounted device. It should be understood that the embodiments of the present disclosure do not limit the specific technology and specific device form adopted by the user equipment.

[0086] It can be understood that the communication system described in the embodiment of the present application is for more clearly illustrating the technical solution of the embodiment of the present application, and does not constitute a limitation on the technical solution provided in the embodiment of the present application. 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 provided in the embodiment of the present application is also applicable to similar technical problems.

[0087] In order to support user equipment in NR to transmit data on shared spectrum, the concept of interlaced resource block (IRB) can be defined to meet the regulatory OCB requirements.

[0088] In one example, if Figure 2 As shown in the figure, for a 20MHz shared subband, when the subcarrier spacing (SCS) is 30KHz, this shared subband includes 50 PRBs in total, each IRB includes 10 non-contiguous PRBs, and there are 5 PRBs between two adjacent PRBs in the same IRB. The 5 IRBs included in this shared subband are numbered 0, 1, 2, 3, and 4 in order of increasing frequency. If the user equipment uses IRBs for data transmission, the OCB requirements can be met.

[0089] Similarly, in another example, Figure 3As shown in FIG. 1 , for a 20MHz shared subband, when the subcarrier spacing (SCS) is 15KHz, the shared subband includes 100 PRBs, each IRB includes 10 non-contiguous PRBs, and 10 PRBs are spaced between two adjacent PRBs in the same IRB. The 10 IRBs included in the shared subband are numbered 0, 1, ..., 9 in order of increasing frequency. If the user equipment uses IRBs for data transmission, the OCB requirements can be met.

[0090] The communication bandwidth for sidelink communication using the shared spectrum may include multiple Listen Before Talk (LBT) sub-bands, for example, an 80 MHz communication bandwidth includes four 20 MHz LBT sub-bands.

[0091] When the user equipment selects resources for the communication bandwidth of the sidelink communication, it can select time-frequency resources distributed in the same LBT sub-band, or it can select time-frequency resources spanning multiple LBT sub-bands.

[0092] One RBset corresponds to one 20MHz shared subband. When the SCS is 30KHz, one 20MHz shared subband contains 50 PRBs in total. One IRB contains 10 non-contiguous PRBs. If the UE needs to select two IRBs for PSCCH / PSSCH transmission, it can be done as follows: Figure 4 As shown, one IRB is selected in RBset1 and RBset2 respectively as the time-frequency resource used for transmission, or as shown in Figure 5 As shown, 2 IRBs are selected in the same RBset1 as the time-frequency resources used for transmission.

[0093] Since the user equipment needs to perform LBT detection on each LBT subband when using multiple LBT subbands for transmission, if the LBT failure probability when the user equipment uses time-frequency resources spanning multiple LBT subbands is the first probability, and the LBT failure probability when using time-frequency resources belonging to the same single LBT subband is the second probability, then the first probability will be significantly greater than the second probability. Therefore, when selecting resources, the user equipment should try to select time-frequency resources within a single LBT subband to reduce the probability of LBT failure.

[0094] The present disclosure provides a method for transmitting sidelink data. Figure 6 is a flow chart of a method for transmitting sidelink data according to an exemplary embodiment. Figure 6 As shown, the method includes steps S601 to S603, specifically:

[0095] S601: A network device sends a high-layer signaling to a first user equipment.

[0096] The high-layer signaling sent by the network device to the first user equipment includes information for indicating N, where N is the number of frequency domain resource units to be determined on the transmission band of the first user equipment. After receiving and parsing the high-layer signaling, the first user equipment can obtain the value of N, that is, the number of frequency domain resource units to be determined on the transmission band.

[0097] The transmission band is located in an unlicensed frequency band, and the transmission band includes M LBT subbands, where N and M are both integers greater than 1. The frequency domain resource unit may be an IRB, or a PRB or a resource block corresponding to a subchannel.

[0098] S602: The first user equipment determines frequency domain resources within a transmission frequency band.

[0099] When determining the frequency domain resources within the transmission frequency band, the first user equipment may determine the frequency domain resources according to the frequency domain resource position of at least one of the LBT subbands. The determined frequency domain resources include N frequency domain resource units, and the number of LBT subbands occupied by the frequency domain resources is less than or equal to the M.

[0100] Among them, when the number of LBT subbands occupied by frequency domain resources is less than the M, the number of LBT detections can be reduced, and the smaller the number of LBT subbands occupied by frequency domain resources, the fewer the number of LBT detections, and the corresponding LBT failure probability is smaller.

[0101] When the number of LBT sub-bands occupied by frequency domain resources is equal to the M, the used time-frequency resources are evenly distributed in the entire communication frequency band, and the mutual interference is small.

[0102] S603: The first user equipment transmits sidelink data on the frequency domain resources.

[0103] The first user equipment may send data to the second user equipment on the frequency domain resources, and may also receive data sent by the second user equipment on the frequency domain resources.

[0104] In the present disclosure, when determining the frequency domain resources within the transmission band, considering the influence of the number of occupied LBT sub-bands, it is possible to determine that the frequency domain resources occupy different numbers of LBT sub-bands to meet different sidelink data transmission requirements. When the number of LBT sub-bands occupied by the frequency domain resources is small, the probability of LBT failure can be reduced. When the number of LBT sub-bands occupied by the frequency domain resources is large, the time-frequency resources can be evenly distributed in the entire communication band to reduce interference.

[0105] The present disclosure provides a method for transmitting sidelink data. Figure 7is a flow chart of a method for transmitting sidelink data according to an exemplary embodiment. Figure 7 As shown, the method includes steps S701 to S703, specifically:

[0106] S701: A first user equipment determines a value of N.

[0107] N is the number of frequency domain resource units to be determined by the first user equipment on the transmission band. The value of N may be a default fixed value or a value determined by the first user equipment according to a protocol agreement. After the first user equipment determines the value of N, it knows the number of frequency domain resource units to be determined on the transmission band.

[0108] S702: The first user equipment determines frequency domain resources within a transmission frequency band.

[0109] The method in S702 for the first user equipment to determine the frequency domain resources within the transmission frequency band is the same as that in S602, and will not be described again here.

[0110] S703: The first user equipment transmits sidelink data on the frequency domain resources.

[0111] The method in which the first user equipment transmits sidelink data on the frequency domain resources in S703 is the same as that in S603 and will not be repeated here.

[0112] The present disclosure provides a method for transmitting sidelink data, which is performed by a first user equipment. Figure 8 is a flow chart of a method for transmitting sidelink data according to an exemplary embodiment. Figure 8 As shown, the method includes steps S801 to S803, specifically:

[0113] Step S801, determine the value of N.

[0114] The N is the number of frequency domain resource units to be determined by the user equipment on the transmission band. The transmission band is located in the unlicensed frequency band, and the transmission band includes M listen-before-talk LBT subbands, and both N and M are integers greater than 1. The frequency domain resource unit can be an IRB, or a PRB or a resource block corresponding to a subchannel.

[0115] For example, when the bandwidth of the transmission band is 40 MHz and M is 2, the transmission band includes 2 LBT sub-bands. When the value of N is 2, the user equipment needs to select 2 IRBs on the transmission band.

[0116] Step S802: determine the frequency domain resources within the transmission band according to the frequency domain resource position of at least one of the LBT sub-bands.

[0117] The frequency domain resources include N frequency domain resource units, and the number of LBT subbands occupied by the frequency domain resources is less than or equal to the M number.

[0118] Step S803: transmit sidelink data on the frequency domain resources, and the process ends.

[0119] The key point in this method is that in step S802, when determining the frequency domain resources within the transmission band, the frequency domain resource position of at least one LBT sub-band is referenced, so that the frequency domain resources that meet the different side link data transmission requirements can be determined.

[0120] Methods for determining frequency domain resources within a transmission band may include the following five methods:

[0121] The first one:

[0122] The method for determining frequency domain resources within a transmission frequency band comprises: determining N frequency domain resource units located in the same LBT sub-band within the transmission frequency band as the frequency domain resources.

[0123] In a possible implementation manner, the first set is first determined, and then one or more candidate resources in the first set are determined as the frequency domain resources.

[0124] The first set only includes candidate resources located in the same LBT subband. Specifically, it includes multiple candidate resources, wherein the candidate resources include N frequency domain resource units, and the N frequency domain resource units in the candidate resources belong to the same LBT subband.

[0125] When a candidate resource in the first set is determined as the frequency domain resource, a one-time transmission is performed using the determined candidate resource.

[0126] When multiple candidate resources in the first set are determined as the frequency domain resources, the determined multiple candidate resources are used for repetitive transmission, and the number of the determined multiple candidate resources corresponds to the number of transmission times of the repetitive transmission.

[0127] In this first method, N frequency domain resource units located in the same LBT subband are selected as frequency domain resources, so that the frequency domain resources are in the same LBT subband and single LBT subband transmission is realized, which can reduce the number of LBT detections, save power consumption, and reduce the probability of LBT failure.

[0128] Second type:

[0129] Determining the frequency domain resources within the transmission band according to the frequency domain resource position of at least one of the LBT sub-bands includes:

[0130] S1, determine the second set.

[0131] The second set includes not only candidate resources located in the same LBT subband, but also candidate resources located in different LBT subbands. Specifically: the second set includes multiple candidate resources, the candidate resources include N frequency domain resource units, at least one candidate resource among the multiple candidate resources occupies one LBT subband, and at least one candidate resource among the multiple candidate resources occupies more than one LBT subband.

[0132] S2: exclude resources from the second set according to the sidelink control information SCI received through channel monitoring and the sidelink RSRP measurement result associated with the SCI.

[0133] Specific:

[0134] When the time-frequency resource indicated or reserved by the SCI overlaps with a first candidate resource occupying an LBT subband in the second set, and the associated sidelink RSRP measurement result is higher than a first threshold, excluding the first candidate resource from the second set; and,

[0135] When the time-frequency resources indicated or reserved by the SCI overlap with the second candidate resources occupying more than one LBT subband in the second set, and the associated sidelink RSRP measurement result is higher than a second threshold, the second candidate resources are excluded from the second set.

[0136] Among them, the first threshold is greater than the second threshold, so that the threshold corresponding to the first candidate resources belonging to the same LBT subband is greater than the threshold corresponding to the second candidate resources belonging to different LBT subbands, so that the second candidate resources belonging to different LBT subbands are more easily excluded and the first candidate resources of the same LBT subband are retained as much as possible.

[0137] In a possible implementation, the method for determining the second threshold includes a first method, a second method, and a third method:

[0138] The first method is to determine the second threshold value according to the number of LBT subbands occupied by the second candidate resource. For example, the number of LBT subbands occupied by the second candidate resource is negatively correlated with the second threshold value, so that the larger the number of LBT subbands occupied by the second candidate resource, the smaller the corresponding second threshold value, that is, the more LBT subbands the second candidate resource spans, the smaller the corresponding second threshold value, so that the second candidate resource is more easily excluded.

[0139] In one example, the number of LBT subbands occupied by the second candidate resource is negatively correlated with the second threshold in the following manner:

[0140] When the number of LBT subbands occupied by the second candidate resource is 1, the corresponding threshold is T;

[0141] When the number of LBT subbands occupied by the second candidate resource is 2, the corresponding threshold is Tt.

[0142] When the number of LBT subbands occupied by the second candidate resource is 3, the corresponding threshold is T-2t;

[0143] Among them, t is a fixed step size, which can also be called offset.

[0144] The size of the S-RSRP threshold is determined according to the number of RB sets to which the candidate resources belong. For example, the threshold for candidate resources with one RB set is threshold 1, for two RB sets it is threshold 1 – offset, and for three RB sets it is threshold - 2 * offset.

[0145] The second method is to determine the second threshold according to a protocol agreement.

[0146] A third method is to receive downlink control configuration information sent by a network device, where the downlink control configuration information includes a value for indicating the second threshold.

[0147] S3, determine the third set.

[0148] The third set includes candidate resources remaining in the second set after removing the first candidate resource and / or the second candidate resource.

[0149] S4: Determine the frequency domain resources from the third set.

[0150] In this second method, the second set is used as the initialized set, and a part of candidate resources are excluded from the second set. Different thresholds are used to exclude candidate resources located in the same LBT subband and candidate resources located in different LBT subbands, so as to give priority to excluding candidate resources located in different LBT subbands and retain candidate resources located in the same LBT subband as much as possible, thereby reducing the number of LBT detections, saving power consumption, and reducing the probability of LBT failure.

[0151] The third type:

[0152] Determining the frequency domain resources within the transmission band according to the frequency domain resource position of at least one of the LBT sub-bands includes:

[0153] S-1, determine the second set.

[0154] The second set includes multiple candidate resources, each candidate resource includes N frequency domain resource units, at least one candidate resource among the multiple candidate resources occupies an LBT subband, and at least one candidate resource among the multiple candidate resources occupies more than one LBT subband.

[0155] S-2, excluding resources from the second set according to the sidelink control information SCI received through channel monitoring and the sidelink RSRP measurement result associated with the SCI.

[0156] Specific:

[0157] When the time-frequency resource indicated or reserved by the SCI overlaps with a third candidate resource in the second set, and the associated sidelink RSRP measurement result is higher than a third threshold, excluding the third candidate resource from the second set;

[0158] S-3, determine the third set.

[0159] The third set includes the candidate resources remaining after removing the third candidate resource from the second set;

[0160] S-4, when the number of candidate resources in the third set is less than the fourth threshold, perform the following steps at least once, or repeat the following steps until the number of candidate resources in the fourth set is not less than the fifth threshold:

[0161] Determine a sixth threshold value; wherein the sixth threshold value is greater than the sixth threshold value of the previous cycle and greater than the third threshold value;

[0162] When the time-frequency resource indicated or reserved by the SCI overlaps with a fourth candidate resource occupying an LBT subband in the second set, and the associated sidelink RSRP measurement result is higher than a sixth threshold, excluding the first candidate resource from the second set;

[0163] When the time-frequency resource indicated or reserved by the SCI overlaps with a fifth candidate resource occupying more than one LBT subband in the second set, and the associated sidelink RSRP measurement result is higher than a third threshold, excluding the first candidate resource from the second set;

[0164] S-5, determine the fourth set.

[0165] The fourth set includes the remaining candidate resources in the second set after removing the fourth candidate resource and / or the fifth candidate resource;

[0166] S-6. Determine the frequency domain resources from the fourth set.

[0167] In this third method, under the premise of ensuring the minimum number of candidate resources included in the fourth set, the threshold for excluding candidate resources is dynamically adjusted to make the fourth set for selecting frequency domain resources more reasonable.

[0168] The fourth type:

[0169] Determining the frequency domain resources within the transmission band according to the frequency domain resource position of at least one of the LBT sub-bands includes:

[0170] S1', determine the first set.

[0171] The first set includes multiple candidate resources, the candidate resources include N frequency domain resource units, and the N frequency domain resource units in the candidate resources belong to the same LBT subband;

[0172] S2', excluding resources from the first set according to the sideline control information SCI received by channel monitoring and the sideline RSRP measurement result associated with the SCI;

[0173] Specific:

[0174] When the time-frequency resource indicated or reserved by the SCI overlaps with a fifth candidate resource occupying one LBT subband in the first set, and the associated sidelink RSRP measurement result is higher than a seventh threshold, excluding the fifth candidate resource from the first set;

[0175] S3', determining a fifth set, wherein the fifth set includes candidate resources remaining after excluding resources from the first set;

[0176] S4', when the number of candidate resources in the fifth set is less than an eighth threshold, determine the second set.

[0177] The second set includes multiple candidate resources, the candidate resources include N frequency domain resource units, at least one candidate resource among the multiple candidate resources occupies one LBT subband, and at least one candidate resource among the multiple candidate resources occupies more than one LBT subband;

[0178] S5': exclude resources from the fifth set according to the sidelink control information SCI received through channel monitoring and the sidelink RSRP measurement result associated with the SCI.

[0179] In one embodiment, different thresholds are used, namely:

[0180] When the time-frequency resource indicated or reserved by the SCI overlaps with a first candidate resource occupying one LBT subband in the second set, and the associated sidelink RSRP measurement result is higher than a ninth threshold, excluding the first candidate resource from the second set; and,

[0181] When the time-frequency resources indicated or reserved by the SCI overlap with the second candidate resources occupying more than one LBT subband in the second set, and the associated sidelink RSRP measurement result is higher than the tenth threshold, the second candidate resources are excluded from the second set.

[0182] In one embodiment, the same threshold is used, namely:

[0183] When the time-frequency resource indicated or reserved by the SCI overlaps with a first candidate resource occupying one LBT subband in the second set, and the associated sidelink RSRP measurement result is higher than an eleventh threshold, excluding the first candidate resource from the second set; and,

[0184] When the time-frequency resources indicated or reserved by the SCI overlap with the second candidate resources occupying more than one LBT subband in the second set, and the associated sidelink RSRP measurement result is higher than the eleventh threshold, the second candidate resources are excluded from the second set.

[0185] S6', determining a sixth set, wherein the sixth set includes candidate resources remaining after resources in the second set are excluded;

[0186] S7', determining the frequency domain resources from the sixth set.

[0187] In the fourth method, candidate resources located in the same LBT subband are selected as much as possible under the premise of ensuring the minimum number of candidate resources included in the fourth set.

[0188] Fifth:

[0189] Determining the frequency domain resources within the transmission band according to the frequency domain resource position of at least one of the LBT sub-bands includes:

[0190] S~1, determine the seventh set.

[0191] Among them, the seventh set includes multiple candidate resources, each candidate resource includes N frequency domain resource units, the N frequency domain resource units in each candidate resource belong to K LBT subbands, K is an integer less than M, and the time-frequency resources corresponding to the SCI have no overlapping area with any candidate resource in the seventh set.

[0192] S~2, determining a candidate resource in the seventh set as the frequency domain resource.

[0193] The method for determining K includes one of the following:

[0194] Determine the K according to the agreement,

[0195] receiving a downlink control signaling sent by a network device, wherein the downlink control signaling includes information for indicating the K,

[0196] A high-layer signaling is received from a network device, where the high-layer signaling includes information for indicating the N.

[0197] In this fifth method, the N frequency domain resource units in each candidate resource are limited to belong to only K LBT subbands, and K is limited to be less than M, thereby reducing the number of LBT subbands occupied by frequency domain resources, reducing the number of LBT detection times, saving power consumption, and reducing the probability of LBT failure.

[0198] Based on the same concept as the above method embodiment, the embodiment of the present disclosure also provides a communication device, which can have the functions of the user equipment 101 in the above method embodiment, and is used to execute the steps performed by the user equipment 101 provided in the above embodiment. The function can be implemented by hardware, or by software or hardware executing corresponding software. The hardware or software includes one or more modules corresponding to the above functions.

[0199] In one possible implementation, Fig. 9 The communication device 900 shown can be used as the user equipment 101 involved in the above method embodiment, and executes the steps performed by the user equipment 101 in the above method embodiment.

[0200] The communication device 900 includes a transceiver module 901 and a processing module 902 .

[0201] In one implementation, the processing module 902 is configured to determine N, where N is the number of frequency domain resource units to be determined by the user equipment on the transmission band; the transmission band is located in an unlicensed frequency band, and the transmission band includes M listen-before-talk LBT subbands, and both N and M are integers greater than 1; and is further configured to determine the frequency domain resources within the transmission band according to the frequency domain resource position of at least one of the LBT subbands; the frequency domain resources include N frequency domain resource units, and the number of LBT subbands occupied by the frequency domain resources is less than or equal to the M;

[0202] The transceiver module 901 is configured to transmit sidelink data on the frequency domain resources.

[0203] In one implementation, the transceiver module 901 is configured to receive a high-level signaling sent by a network device, wherein the high-level signaling includes information for indicating the N; the N is the number of frequency domain resource units to be determined by the user equipment on the transmission band; the transmission band is located in an unlicensed frequency band, the transmission band includes M listen-before-talk LBT subbands, and both N and M are integers greater than 1;

[0204] The processing module 902 is configured to determine the frequency domain resources within the transmission band according to the frequency domain resource position of at least one of the LBT sub-bands; the frequency domain resources include N frequency domain resource units, and the number of LBT sub-bands occupied by the frequency domain resources is less than or equal to the M;

[0205] The transceiver module 901 is further configured to transmit sidelink data on the frequency domain resources.

[0206] In one implementation, the processing module 902 is further configured to determine N frequency domain resource units located in the same LBT sub-band within the transmission frequency band as the frequency domain resources.

[0207] In one implementation, the processing module 902 is further configured to execute the following:

[0208] Determine a first set, where the first set includes multiple candidate resources, and the candidate resources include N frequency domain resource units, and the N frequency domain resource units in the candidate resources belong to the same LBT subband; determine one or more candidate resources in the first set as the frequency domain resources.

[0209] In one implementation, the processing module 902 is further configured to execute the following:

[0210] Determine a second set, the second set includes multiple candidate resources, the candidate resources include N frequency domain resource units, at least one candidate resource among the multiple candidate resources occupies one LBT subband, and at least one candidate resource among the multiple candidate resources occupies more than one LBT subband;

[0211] Excluding resources from the second set according to the sideline control information SCI received by channel monitoring and the sideline RSRP measurement result associated with the SCI;

[0212] When the time-frequency resource indicated or reserved by the SCI overlaps with a first candidate resource occupying an LBT subband in the second set, and the associated sidelink RSRP measurement result is higher than a first threshold, excluding the first candidate resource from the second set; and,

[0213] When the time-frequency resource indicated or reserved by the SCI overlaps with a second candidate resource occupying more than one LBT subband in the second set, and the associated sidelink RSRP measurement result is higher than a second threshold, excluding the second candidate resource from the second set;

[0214] Determine a third set, where the third set includes candidate resources remaining after removing the first candidate resource and / or the second candidate resource from the second set;

[0215] The frequency domain resources are determined from the third set.

[0216] In one implementation, the first threshold is greater than the second threshold.

[0217] In one implementation, the processing module 902 is further configured to determine the second threshold according to the number of LBT subbands occupied by the second candidate resource.

[0218] In one implementation, the number of LBT subbands occupied by the second candidate resource is negatively correlated with the second threshold.

[0219] In one implementation, the processing module 902 is further configured to determine the second threshold according to a protocol agreement.

[0220] In one implementation, the transceiver module 902 is further configured to receive downlink control configuration information sent by a network device, where the downlink control configuration information includes a value for indicating the second threshold.

[0221] In one implementation, the processing module 902 is further configured to execute the following:

[0222] Determine a second set, the second set including multiple candidate resources, each candidate resource including N frequency domain resource units, at least one candidate resource among the multiple candidate resources occupies one LBT subband, and at least one candidate resource among the multiple candidate resources occupies more than one LBT subband;

[0223] Excluding resources from the second set according to the sideline control information SCI received by channel monitoring and the sideline RSRP measurement result associated with the SCI;

[0224] When the time-frequency resource indicated or reserved by the SCI overlaps with a third candidate resource in the second set, and the associated sidelink RSRP measurement result is higher than a third threshold, excluding the third candidate resource from the second set;

[0225] Determine a third set, where the third set includes candidate resources remaining after removing the third candidate resource from the second set;

[0226] When the number of candidate resources in the third set is less than the fourth threshold, the following steps are performed at least once, or the following steps are repeated until the number of candidate resources in the fourth set is not less than the fifth threshold:

[0227] Determine a sixth threshold value; wherein the sixth threshold value is greater than the sixth threshold value of the previous cycle and greater than the third threshold value;

[0228] When the time-frequency resource indicated or reserved by the SCI overlaps with a fourth candidate resource occupying an LBT subband in the second set, and the associated sidelink RSRP measurement result is higher than a sixth threshold, excluding the first candidate resource from the second set;

[0229] When the time-frequency resource indicated or reserved by the SCI overlaps with a fifth candidate resource occupying more than one LBT subband in the second set, and the associated sidelink RSRP measurement result is higher than a third threshold, excluding the first candidate resource from the second set;

[0230] Determine a fourth set, where the fourth set includes remaining candidate resources in the second set after removing the fourth candidate resource and / or the fifth candidate resource;

[0231] The frequency domain resources are determined from the fourth set.

[0232] In one implementation, the processing module 902 is further configured to execute the following:

[0233] Determine a first set, where the first set includes multiple candidate resources, the candidate resources include N frequency domain resource units, and the N frequency domain resource units in the candidate resources belong to the same LBT subband;

[0234] Excluding resources from the first set according to the sideline control information SCI received by channel monitoring and the sideline RSRP measurement result associated with the SCI;

[0235] When the time-frequency resource indicated or reserved by the SCI overlaps with a fifth candidate resource occupying one LBT subband in the first set, and the associated sidelink RSRP measurement result is higher than a seventh threshold, excluding the fifth candidate resource from the first set;

[0236] Determine a fifth set, where the fifth set includes candidate resources remaining after resources in the first set are excluded;

[0237] When the number of candidate resources in the fifth set is less than the eighth threshold, determining a second set, wherein the second set includes multiple candidate resources, the candidate resources include N frequency domain resource units, at least one candidate resource among the multiple candidate resources occupies one LBT subband, and at least one candidate resource among the multiple candidate resources occupies more than one LBT subband;

[0238] Excluding resources from the fifth set according to the sideline control information SCI received through channel monitoring and the sideline RSRP measurement result associated with the SCI;

[0239] Determine a sixth set, where the sixth set includes candidate resources remaining after resources in the second set are excluded;

[0240] The frequency domain resources are determined from the sixth set.

[0241] In one implementation, the processing module 902 is further configured to execute the following:

[0242] Determine a seventh set, the seventh set including multiple candidate resources, each candidate resource including N frequency domain resource units, the N frequency domain resource units in each candidate resource belong to K LBT subbands, K is an integer less than M, and the time-frequency resources corresponding to the SCI do not have an overlapping area with any candidate resource in the seventh set;

[0243] A candidate resource in the seventh set is determined as the frequency domain resource.

[0244] In one implementation, the processing module 902 is further configured to execute the following:

[0245] The K is determined according to a protocol agreement, or a downlink control signaling sent by a network device is received, where the downlink control signaling includes information for indicating the K.

[0246] In one implementation, the transceiver module is further configured to receive high-layer signaling sent by a network device, where the high-layer signaling includes information for indicating the N.

[0247] When the communication device is a user equipment 101, its structure may also be as follows: Fig.10 shown.

[0248] like Fig.10 As shown, for example, the apparatus 1000 may be a mobile phone, a computer, a digital broadcast terminal, a messaging device, a game console, a tablet device, a medical device, a fitness device, a personal digital assistant, etc.

[0249] Reference Fig.10 , the device 1000 may include one or more of the following components: a processing component 1002 , a memory 1004 , a power component 1006 , a multimedia component 1008 , an audio component 1010 , an input / output (I / O) interface 1012 , a sensor component 1014 , and a communication component 1016 .

[0250] The processing component 1002 generally controls the overall operation of the device 1000, such as operations associated with display, phone calls, data communications, camera operations, and recording operations. The processing component 1002 may include one or more processors 1020 to execute instructions to perform all or part of the steps of the above-described method. In addition, the processing component 1002 may include one or more modules to facilitate interaction between the processing component 1002 and other components. For example, the processing component 1002 may include a multimedia module to facilitate interaction between the multimedia component 1008 and the processing component 1002.

[0251] The memory 1004 is configured to store various types of data to support operations on the device 1000. Examples of such data include instructions for any application or method operating on the device 1000, contact data, phone book data, messages, pictures, videos, etc. The memory 1004 can be implemented by any type of volatile or non-volatile storage device or a combination thereof, such as static random access memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic memory, flash memory, magnetic disk or optical disk.

[0252] The power component 1006 provides power to the various components of the device 1000. The power component 1006 may include a power management system, one or more power supplies, and other components associated with generating, managing, and distributing power for the device 1000.

[0253] The multimedia component 1008 includes a screen that provides an output interface between the device 1000 and the user. In some embodiments, the screen may include a liquid crystal display (LCD) and a touch panel (TP). If the screen includes a touch panel, the screen may be implemented as a touch screen to receive input signals from the user. The touch panel includes one or more touch sensors to sense touch, slide, and gestures on the touch panel. The touch sensor may not only sense the boundaries of the touch or slide action, but also detect the duration and pressure associated with the touch or slide operation. In some embodiments, the multimedia component 1008 includes a front camera and / or a rear camera. When the device 1000 is in an operating mode, such as a shooting mode or a video mode, the front camera and / or the rear camera may receive external multimedia data. Each front camera and rear camera may be a fixed optical lens system or have a focal length and optical zoom capability.

[0254] The audio component 1010 is configured to output and / or input audio signals. For example, the audio component 1010 includes a microphone (MIC), and when the device 1000 is in an operating mode, such as a call mode, a recording mode, and a speech recognition mode, the microphone is configured to receive an external audio signal. The received audio signal can be further stored in the memory 1004 or sent via the communication component 1016. In some embodiments, the audio component 1010 also includes a speaker for outputting audio signals.

[0255] I / O interface 1012 provides an interface between processing component 1002 and peripheral interface modules, such as keyboards, click wheels, buttons, etc. These buttons may include but are not limited to: home button, volume button, start button, and lock button.

[0256] The sensor assembly 1014 includes one or more sensors for providing various aspects of the status assessment of the device 1000. For example, the sensor assembly 1014 can detect the open / closed state of the device 1000, the relative positioning of components, such as the display and keypad of the device 1000, the sensor assembly 1014 can also detect the position change of the device 1000 or a component of the device 1000, the presence or absence of user contact with the device 1000, the orientation or acceleration / deceleration of the device 1000, and the temperature change of the device 1000. The sensor assembly 1014 may include a proximity sensor configured to detect the presence of a nearby object without any physical contact. The sensor assembly 1014 may also include an optical sensor, such as a CMOS or CCD image sensor, for use in imaging applications. In some embodiments, the sensor assembly 1014 may also include an accelerometer, a gyroscope sensor, a magnetic sensor, a pressure sensor, or a temperature sensor.

[0257] The communication component 1016 is configured to facilitate wired or wireless communication between the device 1000 and other devices. The device 1000 can access a wireless network based on a communication standard, such as WiFi, 4G or 5G, or a combination thereof. In an exemplary embodiment, the communication component 1016 receives a broadcast signal or broadcast-related information from an external broadcast management system via a broadcast channel. In an exemplary embodiment, the communication component 1016 also includes a near field communication (NFC) module to facilitate short-range communication. For example, the NFC module can be implemented based on radio frequency identification (RFID) technology, infrared data association (IrDA) technology, ultra-wideband (UWB) technology, Bluetooth (BT) technology and other technologies.

[0258] In an exemplary embodiment, the apparatus 1000 may be implemented by one or more application-specific integrated circuits (ASICs), digital signal processors (DSPs), digital signal processing devices (DSPDs), programmable logic devices (PLDs), field programmable gate arrays (FPGAs), controllers, microcontrollers, microprocessors, or other electronic components to perform the above-described methods.

[0259] In an exemplary embodiment, a non-transitory computer-readable storage medium including instructions is also provided, such as a memory 1004 including instructions, and the instructions can be executed by the processor 1020 of the device 1000 to perform the above method. For example, the non-transitory computer-readable storage medium can be a ROM, a random access memory (RAM), a CD-ROM, a magnetic tape, a floppy disk, an optical data storage device, etc.

[0260] Based on the same concept as the above method embodiment, the embodiment of the present application also provides a communication device, which can have the functions of the user equipment 102 in the above method embodiment, and can be used to execute the steps performed by the user equipment 102 provided by the above method embodiment. The function can be implemented by hardware, or by software or hardware executing corresponding software. The hardware or software includes one or more modules corresponding to the above functions.

[0261] In one possible implementation, Fig.11 The communication device 1100 shown can be used as the user equipment involved in the above method embodiment, and executes the steps performed by the network device 102 in the above method embodiment. Fig.11 As shown, the communication device 1100 may include a transceiver module 1101 and a processing module. The transceiver module 1101 may be used to support the communication device 1100 to communicate. The transceiver module 1101 may have a wireless communication function, for example, it can communicate wirelessly with other communication devices through a wireless air interface.

[0262] When executing the steps implemented by the network device 102, the transceiver module 1101 is configured to send a high-layer signaling to the user equipment, wherein the high-layer signaling includes information for indicating the N. The N is the number of frequency domain resource units to be determined by the user equipment on the transmission band; the transmission band is located in the unlicensed frequency band.

[0263] When the communication device is a network device 102, its structure may also be as follows: Fig.12 As shown. Fig.12 As shown, the device 1200 includes a memory 1201, a processor 1202, a transceiver component 1203, and a power supply component 1206. Among them, the memory 1201 is coupled to the processor 1202, and can be used to store the programs and data necessary for the communication device 1200 to implement various functions. The processor 1202 is configured to support the communication device 1200 to perform the corresponding functions in the above method, and this function can be implemented by calling the program stored in the memory 1201. The transceiver component 1203 can be a wireless transceiver, which can be used to support the communication device 1200 to receive signaling and / or data through a wireless air interface, and send signaling and / or data. The transceiver component 1203 can also be called a transceiver unit or a communication unit. The transceiver component 1203 may include a radio frequency component 1204 and one or more antennas 1205, wherein the radio frequency component 1204 may be a remote radio unit (RRU), which can be specifically used for the transmission of radio frequency signals and the conversion of radio frequency signals and baseband signals, and the one or more antennas 1205 can be specifically used for the radiation and reception of radio frequency signals.

[0264] When the communication device 1200 needs to send data, the processor 1202 can perform baseband processing on the data to be sent, and then output the baseband signal to the RF unit. The RF unit performs RF processing on the baseband signal and then sends the RF signal in the form of electromagnetic waves through the antenna. When data is sent to the communication device 1200, the RF unit receives the RF signal through the antenna, converts the RF signal into a baseband signal, and outputs the baseband signal to the processor 1202. The processor 1202 converts the baseband signal into data and processes the data.

[0265] Those skilled in the art will readily appreciate other implementations of the disclosed embodiments after considering the specification and practicing the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of the disclosed embodiments, which follow the general principles of the disclosed embodiments and include common knowledge or customary technical means in the art that are not disclosed in the present disclosure. The specification and examples are to be considered as exemplary only, and the true scope and spirit of the disclosed embodiments are indicated by the following claims.

[0266] It should be understood that the embodiments of the present disclosure are not limited to the precise structures described above and shown in the drawings, and various modifications and changes may be made without departing from the scope thereof. The scope of the embodiments of the present disclosure is limited only by the appended claims.

[0267] Industrial Applicability

[0268] When determining the frequency domain resources within the transmission band, taking into account the influence of the number of occupied LBT sub-bands, it can be determined that the frequency domain resources occupy different numbers of LBT sub-bands to meet different side link data transmission requirements.

Claims

1. A method for transmitting sidelink data, performed by a user equipment, the method comprising: Determine a value of N, where N is the number of frequency domain resource units to be determined by the user equipment on a transmission frequency band; The transmission band is located in an unlicensed frequency band, and the transmission band includes M listen-before-talk LBT subbands, where N and M are both integers greater than 1; Determine the frequency domain resources within the transmission band according to the frequency domain resource position of at least one of the LBT sub-bands; the frequency domain resources include N frequency domain resource units, and the number of LBT sub-bands occupied by the frequency domain resources is less than or equal to the M; The sidelink data is transmitted on the frequency domain resources.

2. The method of claim 1, wherein: Determining the frequency domain resources within the transmission band according to the frequency domain resource position of at least one of the LBT sub-bands includes: Determine N frequency domain resource units located in the same LBT sub-band within the transmission frequency band as the frequency domain resources.

3. The method of claim 2, wherein: The determining that the N frequency domain resource units located in the same LBT sub-band within the transmission frequency band are the frequency domain resources includes: Determine a first set, where the first set includes multiple candidate resources, the candidate resources include N frequency domain resource units, and the N frequency domain resource units in the candidate resources belong to the same LBT subband; Determine one or more candidate resources in the first set as the frequency domain resources.

4. The method of claim 1, wherein: The determining the frequency domain resources within the transmission band according to the frequency domain resource position of at least one of the LBT sub-bands comprises: Determine a second set, the second set includes multiple candidate resources, the candidate resources include N frequency domain resource units, at least one candidate resource among the multiple candidate resources occupies one LBT subband, and at least one candidate resource among the multiple candidate resources occupies more than one LBT subband; Excluding resources from the second set according to the sideline control information SCI received by channel monitoring and the sideline RSRP measurement result associated with the SCI; When the time-frequency resource indicated or reserved by the SCI overlaps with a first candidate resource occupying an LBT subband in the second set, and the associated sidelink RSRP measurement result is higher than a first threshold, excluding the first candidate resource from the second set; and, When the time-frequency resource indicated or reserved by the SCI overlaps with a second candidate resource occupying more than one LBT subband in the second set, and the associated sidelink RSRP measurement result is higher than a second threshold, excluding the second candidate resource from the second set; Determine a third set, where the third set includes candidate resources remaining after removing the first candidate resource and / or the second candidate resource from the second set; Determining the frequency domain resources from the third set; The first threshold is greater than the second threshold.

5. The method of claim 4, wherein: The method further comprises: The second threshold is determined according to the number of LBT subbands occupied by the second candidate resources.

6. The method of claim 4, wherein: The number of LBT subbands occupied by the second candidate resource is negatively correlated with the second threshold.

7. The method of claim 4, wherein: The method further comprises: The second threshold is determined according to a protocol agreement, or downlink control configuration information sent by a network device is received, where the downlink control configuration information includes a value for indicating the second threshold.

8. The method of claim 1, wherein: The determining the frequency domain resources within the transmission band according to the frequency domain resource position of at least one of the LBT sub-bands comprises: Determine a second set, the second set including multiple candidate resources, each candidate resource including N frequency domain resource units, at least one candidate resource among the multiple candidate resources occupies one LBT subband, and at least one candidate resource among the multiple candidate resources occupies more than one LBT subband; Excluding resources from the second set according to the sideline control information SCI received by channel monitoring and the sideline RSRP measurement result associated with the SCI; When the time-frequency resource indicated or reserved by the SCI overlaps with a third candidate resource in the second set, and the associated sidelink RSRP measurement result is higher than a third threshold, excluding the third candidate resource from the second set; Determine a third set, where the third set includes candidate resources remaining after removing the third candidate resource from the second set; When the number of candidate resources in the third set is less than the fourth threshold, the following steps are performed at least once, or the following steps are repeated until the number of candidate resources in the fourth set is not less than the fifth threshold: Determine a sixth threshold value; wherein the sixth threshold value is greater than the sixth threshold value of the previous cycle and greater than the third threshold value; When the time-frequency resource indicated or reserved by the SCI overlaps with a fourth candidate resource occupying an LBT subband in the second set, and the associated sidelink RSRP measurement result is higher than a sixth threshold, excluding the first candidate resource from the second set; When the time-frequency resource indicated or reserved by the SCI overlaps with a fifth candidate resource occupying more than one LBT subband in the second set, and the associated sidelink RSRP measurement result is higher than a third threshold, excluding the first candidate resource from the second set; Determine a fourth set, where the fourth set includes remaining candidate resources in the second set after removing the fourth candidate resource and / or the fifth candidate resource; The frequency domain resources are determined from the fourth set.

9. The method of claim 1, wherein: The determining the frequency domain resources within the transmission band according to the frequency domain resource position of at least one of the LBT sub-bands comprises: Determine a first set, where the first set includes multiple candidate resources, the candidate resources include N frequency domain resource units, and the N frequency domain resource units in the candidate resources belong to the same LBT subband; Excluding resources from the first set according to the sideline control information SCI received by channel monitoring and the sideline RSRP measurement result associated with the SCI; When the time-frequency resource indicated or reserved by the SCI overlaps with a fifth candidate resource occupying one LBT subband in the first set, and the associated sidelink RSRP measurement result is higher than a seventh threshold, excluding the fifth candidate resource from the first set; Determine a fifth set, where the fifth set includes candidate resources remaining after resources in the first set are excluded; When the number of candidate resources in the fifth set is less than the eighth threshold, determining a second set, wherein the second set includes multiple candidate resources, the candidate resources include N frequency domain resource units, at least one candidate resource among the multiple candidate resources occupies one LBT subband, and at least one candidate resource among the multiple candidate resources occupies more than one LBT subband; Excluding resources from the fifth set according to the sideline control information SCI received through channel monitoring and the sideline RSRP measurement result associated with the SCI; Determine a sixth set, where the sixth set includes candidate resources remaining after resources in the second set are excluded; The frequency domain resources are determined from the sixth set.

10. The method of claim 1, wherein: The determining the frequency domain resources within the transmission band according to the frequency domain resource position of at least one of the LBT sub-bands comprises: Determine a seventh set, the seventh set including multiple candidate resources, each candidate resource including N frequency domain resource units, the N frequency domain resource units in each candidate resource belong to K LBT subbands, K is an integer less than M, and the time-frequency resources corresponding to the SCI do not have an overlapping area with any candidate resource in the seventh set; A candidate resource in the seventh set is determined as the frequency domain resource.

11. The method of claim 10, wherein: The method further comprises: The K is determined according to a protocol agreement, or a downlink control signaling sent by a network device is received, where the downlink control signaling includes information for indicating the K.

12. The method according to any one of claims 1 to 11, wherein: The method further comprises: A high-layer signaling is received from a network device, where the high-layer signaling includes information for indicating the N.

13. An apparatus for transmitting sidelink data, comprising: A processing module is configured to determine N, where N is the number of frequency domain resource units to be determined by the user equipment on the transmission frequency band; The transmission band is located in an unlicensed frequency band, and the transmission band includes M listen-before-talk LBT subbands, where N and M are both integers greater than 1; the device is further configured to determine the frequency domain resources in the transmission band according to the frequency domain resource position of at least one of the LBT subbands; the frequency domain resources include N frequency domain resource units, and the number of LBT subbands occupied by the frequency domain resources is less than or equal to the M; The transceiver module is configured to transmit sidelink data on the frequency domain resources.

14. A communication device, comprising a processor and a memory, wherein: The memory is used to store computer programs; The processor is configured to execute the computer program to implement the method according to any one of claims 1 to 12.

15. A computer-readable storage medium, wherein instructions are stored in the computer-readable storage medium, and when the instructions are called and executed on a computer, the computer is caused to execute the method according to any one of claims 1 to 12.

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