Sidelink sensing information sharing

Abstract

Disclosed are methods, apparatuses, and systems for transferring at least one of resource reservation information or channel sensing information in sidelink communications, including receiving, from at least one first user equipment (UE), at least one of resource reservation information or channel sensing information acquired by the at least one first UE, storing the at least one of the resource reservation information or channel sensing information, and transmitting the received at least one of the resource reservation information or channel sensing information to a second UE.

Description

[Technical Field]

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS This application claims the benefit of U.S. Provisional Application No. 63 / 396,857, filed August 10, 2022, and entitled "SL SENSING INFORMATION SHARING," which is incorporated herein by reference in its entirety.

[0002] The present disclosure relates generally to communications, and more particularly to methods, systems, and devices for sidelink sensing information sharing in sidelink communications. [Background technology]

[0003] Sidelink communication techniques enable direct communication between two devices. When a first device in a first sidelink communication shares radio resources with a second device in a second sidelink communication, the first and second devices select which radio resources to use. To select the radio resources, the first or second device obtains resource reservation information and / or channel sensing information. In some cases, direct exchange of such information between the two devices is not possible. For example, a first device may have modules for both the first and second sidelink communications and be able to decode resource information associated with the second sidelink communication, while a second device only has modules for the second sidelink communication and therefore cannot decode resource information associated with the first sidelink communication, resulting in inefficient and unfair resource allocation. Improved systems and methods for sharing resource reservation information and / or channel sensing information are desired.

[0004] The resource selection procedure for 3GPP Release 16 / 17 5G New Radio (NR) Vehicle-to-Everything (V2X) PC5 Mode 2 is specified in 3GPP TS38.213, TS38.214, and TS38.321. For resource selection, a user equipment (UE) performs channel sensing within a sensing window and collects resource reservation information of other UEs based on sidelink control information (SCI) decoding to identify candidate resources within a selection window T (T = [T1, T2]). First, the UE excludes from the selection window some time slots of unmonitored resources within the sensing window that cannot be sensed due to its own transmission (i.e., half-duplex constraint). Then, the UE further excludes resources reserved by other UEs from the selection window if their corresponding sidelink-reference signal received power (SL-RSRP) exceeds a (pre-configured) SL-RSRP exclusion threshold. After resource exclusion, the number of candidate resources must be at least X% of the total number of resources in the selection window. If not, the UE increases the SL-RSRP exclusion threshold by 3 dB until it obtains at least X% of the resources, where X is (pre-)configured from {20, 35, 50}%. Finally, the UE randomly selects a resource from the candidate resources in the selection window. The selected frequency resource may be used multiple times at fixed time intervals for subsequent transmissions (i.e., semi-persistent scheduling (SPS)) or may be used only once (i.e., one-shot transmission (OST)). The UE may also retransmit a packet multiple times with or without feedback from the receiving UE to improve reliability (i.e., hybrid automatic repeat request (HARQ)). tomatic repeat request).

[0005] To obtain information for sensing and receiving packets from other UEs, a UE first decodes the SCI. Rel-16 includes the first-stage SCI (SCI format 1-A) and second-stage SCI (SCI format 2-A or 2-B) defined in 3GPP TS38.212. The first-stage SCI carries resource reservation information for future transmissions, as well as information about resource allocation, such as the physical sidelink shared channel (PSSCH) modulation and coding scheme (MCS), demodulation reference signal (DMRS) pattern, and second-stage SCI format. The second-stage SCI carries control information for HARQ procedures, source / destination IDs, and distance-based groupcast information (UE zone identification (ID) and communication range requirements). When performing resource (re)selection, each UE avoids using time / frequency resources reserved by other UEs based on the resource reservations included in the first-stage SCI.

[0006] Rel-17 5G NR-V2X PC5 Mode 2 introduces inter-UE coordination (IUC), where UE-A sends resource coordination information to UE-B, which then uses this information for its own resource (re)selection. The following inter-UE coordination methods are supported: IUC method 1: UE-A can provide UE-B with an indication of resources that should preferably be included or excluded from UE-B's (re)selection resources. Given the resources to include, UE-B can rely on those resources alone, at least if it does not support sensing / resource exclusion, or it can combine them with resources identified by its own sensing procedure before making the final selection. The indication from UE-A to UE-B is sent via the medium access control (MAC) control element (CE). element) and / or second-stage SCI. IUC method 2: UE-A can provide UE-B with an indication that resources reserved for UE-B's transmission (which may or may not be destined for UE-A) will or may be in conflict with transmissions from other UEs. UE-B then reselects new resources to replace them. The indication from UE-A to UE-B is transmitted on the physical sidelink feedback channel (PSFCH). Summary of the Invention

[0007] According to an embodiment of the present disclosure, there is provided a method for transferring at least one of resource reservation information or channel sensing information in sidelink communication, the method including: receiving, from at least one first user equipment (UE), at least one of resource reservation information or channel sensing information acquired by the at least one first UE, storing the at least one of the resource reservation information or the channel sensing information, and transmitting the received at least one of the resource reservation information or the channel sensing information to a second UE.

[0008] According to an embodiment of the present disclosure, there is provided a method for providing location information and at least one of resource reservation information or channel sensing information in sidelink communication, the method including: performing a sidelink channel sensing operation to obtain the at least one of resource reservation information or channel sensing information associated with location information of a user equipment (UE); and reporting to the device to enable the device to provide the location information and the at least one of the resource reservation information or the channel sensing information to other UEs.

[0009] According to one embodiment of the present disclosure, there is provided a method for obtaining at least one of resource reservation information or sidelink channel sensing information from a device in a communications network, the method comprising receiving, from the device, the at least one of the resource reservation information or the channel sensing information that does not apply to the device.

[0010] According to an embodiment of the present disclosure, an apparatus for transferring at least one of resource reservation information or channel sensing information in sidelink communication includes: a memory that stores instructions; and a processor that executes the instructions stored in the memory to receive, from at least one first user equipment (UE), the at least one of the resource reservation information or the channel sensing information acquired by the at least one first UE, store the at least one of the resource reservation information or the channel sensing information, and transmit the received at least one of the resource reservation information or the channel sensing information to a second UE.

[0011] According to one embodiment of the present disclosure, a UE is provided that provides location information and at least one of resource reservation information or channel sensing information in sidelink communication, the UE including: a memory that stores instructions; and a processor that executes the instructions stored in the memory to perform a sidelink channel sensing operation to obtain at least one of resource reservation information or channel sensing information associated with location information of the UE and to report the location information and at least one of the resource reservation information or channel sensing information to a device in sidelink communication to enable the device to provide the location information and at least one of the resource reservation information or channel sensing information to other UEs.

[0012] According to one embodiment of the present disclosure, a UE is provided for obtaining at least one of resource reservation information or channel sensing information in sidelink communication, the UE including: a memory that stores instructions; and a processor that executes the instructions stored in the memory to receive at least one of the resource reservation information or channel sensing information from a device, the at least one of the resource reservation information or channel sensing information applying to other UEs and not applying to the device.

[0013] According to one embodiment of the present disclosure, a non-transitory computer-readable medium storing instructions executable by one or more processors of devices in a communication network to perform a method, the method including receiving, from at least one first user equipment (UE), at least one of resource reservation information or channel sensing information acquired by the at least one first UE, storing the at least one of the resource reservation information or the channel sensing information, and transmitting the received at least one of the resource reservation information or the channel sensing information to a second UE.

[0014] According to an embodiment of the present disclosure, another non-transitory computer-readable medium storing instructions executable by one or more processors of a UE in a communication network to perform a method, the method including: performing a sidelink channel sensing operation to obtain at least one of resource reservation information or channel sensing information associated with location information of the UE; and reporting the location information and at least one of the channel sensing information to the device in sidelink communication to enable the device to provide the location information and the at least one of the resource reservation information or the channel sensing information to other UEs.

[0015] According to an embodiment of the present disclosure, there is provided another non-transitory computer-readable medium storing instructions executable by one or more processors of a UE in a communications network to perform a method, the method including receiving, from a device, at least one of resource reservation information or sidelink channel sensing information that does not apply to the device. [Brief explanation of the drawings]

[0016] [Figure 1] 1 is a flowchart illustrating a method for resource selection in sidelink communication according to an embodiment of the present disclosure. [Figure 2] 2 is a schematic diagram illustrating a resource candidate determination procedure according to the method of FIG. 1, according to one embodiment of the present disclosure. [Figure 3] FIG. 2 is a schematic diagram illustrating a sidelink packet structure used in the method of FIG. 1 according to one embodiment of the present disclosure. [Figure 4] 1 is a flowchart illustrating a method for resource selection in sidelink communication according to an embodiment of the present disclosure. [Figure 5A] 5 is a schematic diagram illustrating a resource candidate determination procedure according to the method of FIG. 4, according to one embodiment of the present disclosure. [Figure 5B]5 is a table illustrating the correspondence between subcarrier spacing and sensing window and selection window parameters (TSL proc,0 and TSL proc,1) for the method of FIG. 4 according to one embodiment of the present disclosure. [Figure 6A] FIG. 5 is a schematic diagram illustrating a sidelink packet structure used in the method of FIG. 4 according to one embodiment of the present disclosure. [Figure 6B] FIG. 5 is a schematic diagram illustrating another sidelink packet structure used in the method of FIG. 4 according to an embodiment of the present disclosure. [Figure 7] FIG. 1 is a schematic diagram illustrating dynamic co-channel coexistence of first and second sidelink communications according to an embodiment of the present disclosure. [Figure 8] FIG. 1 is a schematic diagram illustrating device types for dynamic co-channel coexistence of first and second sidelink communications according to an embodiment of the present disclosure. [Figure 9A] FIG. 1 is a schematic diagram illustrating a semi-static resource pool configuration in time domain multiplexing (TDM) for co-channel coexistence of first and second sidelink communications according to an embodiment of the present disclosure. [Figure 9B] FIG. 1 is a schematic diagram illustrating a semi-static resource pool configuration in frequency domain multiplexing (FDM) for co-channel coexistence of first and second sidelink communications according to an embodiment of the present disclosure. [Figure 10] 1 is a flowchart illustrating a method for forwarding at least one of resource reservation information or channel sensing information in sidelink communication according to an embodiment of the present disclosure. [Figure 11] FIG. 1 is a schematic diagram illustrating a method for providing location information and at least one of resource reservation information or channel sensing information in sidelink communication according to an embodiment of the present disclosure. [Figure 12]FIG. 1 is a schematic diagram illustrating a method for obtaining at least one of resource reservation information or sidelink channel sensing information from a device in a communication network according to an embodiment of the present disclosure. [Figure 13] FIG. 1 is a block diagram of a device according to an embodiment of the present disclosure. DETAILED DESCRIPTION OF THE INVENTION

[0017] Reference will now be made in detail to exemplary embodiments, examples of which are illustrated in the accompanying drawings. The following description refers to the accompanying drawings, in which like numbers in different drawings represent the same or similar elements unless otherwise noted. The implementations illustrated in the following description of exemplary embodiments do not represent all implementations consistent with the present disclosure. Rather, they are merely examples of systems, apparatus, and methods consistent with aspects related to the present disclosure as set forth in the appended claims.

[0018] FIG. 1 is a flowchart illustrating a method 100 of resource selection in sidelink communication (referred to as the "first method" in this disclosure) according to one embodiment of the present disclosure. FIG. 2 is a schematic diagram illustrating a resource candidate determination procedure according to the first method, according to one embodiment of the present disclosure. Method 100 may be performed by a UE in sidelink communication. For example, method 100 may be performed by a vehicle in V2X communication. Method 100 may be performed in a mode (referred to as the "first mode" in this disclosure) using discrete Fourier transform spread orthogonal frequency division multiplexing (DFT-s-OFDM) for the sidelink at the physical (PHY) layer. An example of the first mode is 3rd Generation Partnership Project (3GPP) Release 14 / 15 Long Term Evolution (LTE) V2X PC5 Mode 4.

[0019] As shown in FIG. 2, in the first mode, the time-frequency radio resources are divided into subframes in the time domain and subchannels in the frequency domain. In one embodiment, the first mode may support only a 15 kHz subcarrier spacing (SCS). Each subframe may be 1 ms long and contain 14 DFT-s-OFDM symbols. Each subchannel may consist of multiple consecutive physical resource blocks (PRBs). Each PRB occupies 180 kHz and consists of 12 subcarriers with a 15 kHz SCS. The size of the subchannel (i.e., the number of PRBs per subchannel) may be configurable or preconfigurable. To address the high Doppler caused by high relative speeds in vehicular scenarios, the density of the demodulation reference signals (DMRSs) used for frequency offset correction and channel estimation may be set to four per subframe. Each UE may broadcast data (e.g., transport blocks (TBs)) on a physical sidelink shared channel (PSSCH) and sidelink control information (SCI) on a physical sidelink control channel (PSCCH). The PSCCH may occupy two consecutive PRBs. The number of PRBs for the PSSCH may be configurable or preconfigurable. The SCI format may include information necessary to decode the corresponding TB in the PSSCH and to facilitate autonomous resource selection by the UE. As shown in Figure 2, the resource reservation interval can be set to one of allowed values ​​(e.g., 20, 50, 100, 200, 300...1000 ms). The PSCCH and the corresponding PSSCH may be transmitted in the same subframe on either adjacent or non-adjacent PRBs in the frequency domain.

[0020] 1, method 100 includes step 102 of performing channel sensing (e.g., background sensing or any other type of full or partial sensing). For example, as shown in FIG. 2, for resource selection, a UE may perform channel sensing within a sensing window (e.g., 1000 ms) to collect resource reservation information of other UEs. The sensing window may be of any length depending on the implementation of the UE.

[0021] Returning to FIG. 1 , the method 100 includes step 104 of collecting resource reservation information and corresponding sidelink reference signal received powers (SL-RSRPs) of other UEs and measuring a sidelink received signal strength indicator (S-RSSI). For example, the UE may collect resource reservation information and corresponding SL-RSRPs of other UEs. The UE may also measure the S-RSSI using the received sidelink signals. The UE may decode the received SCIs included in the received sidelink signals to identify candidate resources within a selection window T (e.g., T = [T1, T2], where T1 ≤ 4 ms and 20 ≤ T2 ≤ 100 ms), as shown in FIG. 2 . The selection of the values ​​of T1 and T2 depends on the UE implementation.

[0022] The method 100 includes step 106 of determining candidate resources based on the average S-RSSI ranking, excluding occupied, reserved, and / or unmonitored resources. For example, as shown in FIG. 2, when resource selection or reselection is triggered, the UE may exclude some subframes from the selection window. The excluded subframes may be resources that are not monitored in the sensing window. The UE may not be able to sense these resources, for example, due to its own transmission (e.g., half-duplex constraints). The UE may further exclude resources occupied or reserved by other UEs from the selection window if the corresponding SL-RSRP exceeds a configured or pre-configured SL-RSRP exclusion threshold. After the resource exclusion, the number of candidate resources may be at least 20% of the total number of resources in the selection window. If not, the UE may increase the SL-RSRP exclusion threshold, for example, by 3 dB, until the candidate resources reach at least 20% of all resources. The UE may further calculate the corresponding S-RSSI of each subchannel resource as a linear average of the S-RSSI of the monitored resources at a regular interval (e.g., when the resource reservation interval is 100 ms or more, the averaging interval is 100 ms). The UE may determine, for example, the best 20% of resources with the lowest average S-RSSI as candidate resources from all resources within the selection window. The UE may use the 20% of resources with the lowest average S-RSSI as candidate resources based on the S-RSSI ranking.

[0023] The method 100 includes a step 108 of selecting a resource from among the candidate resources. The selection of a resource from among the candidate resources may be a random selection. For example, as shown in FIG. 2, the UE may select a single-subframe resource from among the candidate single-subframe resources in a uniformly random manner. The selected frequency resource may be used multiple times at fixed time intervals for subsequent transmissions (this scheme is referred to in this disclosure as "semi-persistent scheduling (SPS)") or may be used only once (this scheme is referred to in this disclosure as "one-shot transmission (OST)").

[0024] The method 100 includes step 110 of transmitting a packet based on the SPS or OST. The packet can be an initial packet or a retransmission packet. For example, the UE may transmit the initial packet using the selected resource. As another example, the UE may retransmit the packet at most one time without feedback from the receiving UE to improve the reliability of the transmission (this is referred to in this disclosure as a "blind hybrid automatic repeat request (HARQ) retransmission"). After the transmission, the method may start again from step 102.

[0025] 3 is a schematic diagram illustrating a packet structure 300 for sidelink communication used in the method of FIG. 1 according to one embodiment of the present disclosure. The packet structure 300 may be used for transmitting or receiving packets by a UE in sidelink communication. The term "packet" used herein may refer to a signal, data, one or more control signals, one or more data signals, one or more frames, one or more subframes, one or more slots, etc. For example, packet structure 300 may be used to transmit a signal or data by a vehicle in V2X communication. Packet structure 300 may be used in a first mode. As shown in FIG. 3 , in the time domain, packet structure 300 includes a subframe 302 including 14 DFT-s-OFDM symbols, of which four symbols are used for DMRS, one symbol is used for a guard period, and the remaining symbols are used for PSCCH or PSSCH. The first symbol of subframe 302 may be used for automatic gain control (AGC). In the frequency domain, packet structure 300 includes a subchannel 304 consisting of n PRBs and a subchannel 306 consisting of two PRBs.

[0026] FIG. 4 is a flowchart illustrating a method 400 for resource selection in sidelink communication (referred to as the "second method" in this disclosure), FIG. 5A is a schematic diagram illustrating a resource candidate determination procedure according to the second method, and FIG. 5B is a diagram illustrating a resource candidate determination procedure according to the method of FIG. 4, in which the SCS and the parameters of the sensing window and the selection window (T SL proc,0 and T SL proc,1 ), both of which are in accordance with an embodiment of the present disclosure. Method 400 may be performed by a UE in sidelink communication. For example, method 400 may be performed by a vehicle in V2X communication. Method 400 may be performed in a mode (referred to as the "second mode" in this disclosure) that uses orthogonal frequency division multiplexing (OFDM) at the PHY layer of sidelink communication. An example of the second mode is 3GPP Release 16 / 17 5G NR-V2X PC5 Mode 2.

[0027] As shown in Figure 5A, in the second mode, the time-frequency radio resource is divided into slots in the time domain and subchannels in the frequency domain. In one embodiment, the second mode is 15 2 μ kHz SCS may be supported, where μ is the OFDM numerology μ∈{0,1,2,3,4}. For sub-6 GHz frequencies, SCSs of 15, 30, and 60 kHz (i.e., μ∈{0,1,2}) may be supported, and for frequencies above 6 GHz, SCSs of 60, 120, and 240 kHz (i.e., μ∈{2,3,4}) may be supported. Each slot is ½ μ ms long and consists of 14 OFDM symbols. Each subchannel may consist of multiple consecutive PRBs, each of which is 180 2 μ occupies 15.2 kHz μ The DMRS 12-bit subchannel consists of 12 subcarriers with an SCS of 1 kHz. The subchannel size (i.e., the number of PRBs per subchannel) is configurable or preconfigurable. Multiple DMRS density options (2 to 4 DMRS symbols per slot) are supported to support multiple SCSs and different Doppler spreads. Each UE may transmit the first-stage SCI on the PSCCH and data (TB) and second-stage SCI on the PSSCH. HARQ feedback (e.g., acknowledgement (ACK) / negative acknowledgment (NACK) or NACK only) may be transmitted on the physical sidelink feedback channel (PSFCH).

[0028] Figure 5B shows the relationship between the SCS and the sensing and selection window parameters (T SL proc,0 and T SL proc,1 For example, when the SCS is 15 kHz, as shown in the second and third columns of Figure 5B, T SL proc,0 corresponds to 1 ms, and T SL proc,1corresponds to 3 ms. As another example, if the SCS is 30 kHz, T SL proc,0 corresponds to 0.5 ms, and T SL proc,1 corresponds to 2.5ms.

[0029] 4, the method 400 includes step 402 of performing channel sensing (e.g., background sensing or any other type of full or partial sensing). For example, as shown in FIG. 5A, the UE may perform a sensing window T sensing (For example, T sensing =[T0,T SL proc,0 ], where T0=100 or 1100 ms, and T SL proc,0 5B) to collect resource reservation information of other UEs. Channel sensing in a 100 ms sensing window may be for aperiodic traffic, and channel sensing in an 1100 ms sensing window may be for periodic traffic.

[0030] The method 400 includes step 404 of collecting resource reservation information of other UEs and measuring corresponding SL-RSRPs. For example, as shown in FIG. 5A, a UE may perform channel sensing within a sensing window and collect resource reservation information of other UEs based on decoding of the SCI to identify candidate resources. In one embodiment, to perform sensing and obtain information for receiving packets of other UEs, the UE first decodes the SCI. The decoding of the SCI may include two stages: a first-stage SCI (SCI format 1-A) and a second-stage SCI (SCI format 2-A or 2-B) defined in 3GPP. The first-stage SCI may carry resource reservation information for future transmissions, information about resource allocation, a modulation and coding scheme (MCS) for the PSSCH, a DMRS pattern, and a second-stage SCI format. The second-stage SCI may carry control information for HARQ procedures, source / destination IDs, distance-based groupcast information (e.g., a UE's zone ID and communication range requirements), and the like. When performing resource selection or reselection, each UE may avoid using time and / or frequency resources reserved by other UEs based on the resource reservations included in the first stage SCI.

[0031] The method 400 includes determining 406 candidate resources by excluding occupied, reserved, and / or unmonitored resources. For example, the UE may exclude unmonitored slots from a selection window T (e.g., T=[T1, T2], where 0≦T1≦T SL proc,1 ms and T SL proc,1(T1 is given in FIG. 5B, and T2 is set based on the remaining packet delay window). The UE may not be able to sense unmonitored slots in the sensing window, for example, due to its own transmission (e.g., half-duplex constraints). The UE may further exclude resources occupied or reserved by other UEs from the selection window if the corresponding SL-RSRP exceeds a configured or pre-configured SL-RSRP exclusion threshold. After resource exclusion, the number of candidate resources may be at least X% of the total number of resources in the selection window. If not, the UE may increase the SL-RSRP exclusion threshold, for example, by 3 dB, until at least X% of the resources are obtained. X may be configured or pre-configured from {20, 35, 50}%.

[0032] The method 400 includes a step 408 of selecting a resource from among the candidate resources. The selection may be a random selection. For example, as shown in FIG. 5A, the UE may randomly select a resource from among the candidate resources within a selection window. The selected frequency resource may be used multiple times at fixed time intervals for subsequent transmissions (SPS) or may be used only once (OST).

[0033] The method 400 includes a step 410 of checking resource availability based on re-evaluation and / or pre-emption of the selected resource. This may be performed for late arriving packets (eg, aperiodic packets) after node selection and before packet transmission.

[0034] The method 400 includes step 412 of determining whether resource reselection is required. If it is determined that resource reselection is required, the method may repeat from step 404. However, if it is determined that resource reselection is not required, the method may proceed to step 414 of transmitting a packet based on the SPS or OST. The packet may be an initial packet or a retransmission packet. The UE may also retransmit the packet multiple times (e.g., HARQ retransmissions) with or without feedback from the receiving UE to improve the reliability of the transmission.

[0035] FIG. 6A is a schematic diagram illustrating a packet structure 610 for sidelink communication used in the method of FIG. 4 according to one embodiment of the present disclosure. FIG. 6B is a schematic diagram illustrating another packet structure 620 for sidelink communication used in the method of FIG. 4 according to one embodiment of the present disclosure. The packet structure 610 or 620 may be used by a UE to transmit or receive packets in sidelink communication. For example, the packet structure 610 or 620 may be used by a vehicle in V2X communication. The packet structure 610 or 620 may be used in the second mode. Referring to FIG. 6A , in the time domain, the packet structure 610 includes a slot 612 including 14 OFDM symbols for the PSCCH, PSSCH, DMRS, guard period, and AGC. In the frequency domain, the packet structure 610 may include subchannels, each including one or more PRBs. 6B, in the time domain, packet structure 620 includes a slot 622 containing 14 OFDM symbols for PSCCH, PSSCH, DMRS, guard period, AGC, and PSFCH. In the frequency domain, packet structure 620 may include subchannels each containing one or more PRBs. Packet structure 610 or 620 can be configured or pre-configured in different ways, such as including a different number of symbols for PSCCH, PSSCH, or DMRS.

[0036] The above-described embodiments are directed to sidelink channel sensing and resource allocation for a single radio access technology (RAT). One embodiment of the present disclosure is directed to sidelink channel sensing and resource allocation for multi-RAT co-channel coexistence of different sidelink technologies. In these embodiments, for example, any combination of LTE sidelink, NR sidelink, and future generation sidelink may coexist and share the same channel. The future generation described in this disclosure may be 6th generation, 7th generation, or any future technology. One or more embodiments of the present disclosure support channel sensing for resource allocation in multi-RAT sidelink deployments.

[0037] FIG. 7 is a schematic diagram illustrating dynamic co-channel coexistence of a first sidelink (SL) communication and a second sidelink (SL) communication according to an embodiment of the present disclosure. In one embodiment, the first sidelink communication is an NR sidelink communication and the second sidelink communication is an LTE sidelink communication. In this embodiment, for example, the LTE sidelink communication uses a 15 kHz SCS and the NR sidelink communication uses a higher SCS (e.g., 30, 60 kHz). As shown in FIG. 7, the first sidelink communication and the second sidelink communication share time and / or frequency resources.

[0038] FIG. 8 is a schematic diagram illustrating device types for dynamic co-channel coexistence of first and second sidelink (SL) communications according to an embodiment of the present disclosure. Referring to FIG. 8, the present disclosure contemplates at least three types of devices (Type A, Type B, and Type C). Type A devices are devices that transmit first SL communications. A Type-B device includes only a module for the first sidelink communication and a module for the second sidelink communication. A Type-C device includes only a module for the second sidelink communication. For example, in one embodiment, a Type-A device includes both an LTE SL module and an NR SL module, a Type-B device includes only an NR SL module, and a Type-C device includes only an LTE SL module. Because the SCI formats of different wireless technologies are not identical, channel sensing issues arise in multi-RAT co-channel coexistence scenarios. For example, a device with only an LTE module (e.g., a Type-C device) cannot decode future-generation SCI formats (e.g., NR SCI formats) and therefore cannot perform corresponding radio measurements.

[0039] 9A and 9B are schematic diagrams illustrating semi-static resource pool configurations in time-domain multiplexing (TDM) for co-channel coexistence of first and second sidelink communications according to an embodiment of the present disclosure. In one embodiment, the first sidelink communication is 5G NR-V2X PC5 Mode 2, and the second sidelink communication is LTE-V2X PC5 Mode 4. In this embodiment, different resource pools in TDM or FDM are assigned to LTE SL and NR SL within a channel. However, the semi-static approach may have drawbacks. For example, in existing LTE-V2X pre-configurations (e.g., Society of Automotive Engineers (SAE) J3161 / 1, European Telecommunications Standards Institute (ETSI) EN 303 613), all time and frequency resources are allocated to LTE SL. Therefore, once LTE SL is deployed, updating the resource pool configuration may not be easy due to the long lifespan of a vehicle (typically 10 years or more). Even if resource pool configuration updates are possible for already deployed LTE SL radios, semi-static resource pool allocation may result in spectrum under- or overutilization (e.g., channel congestion) due to imbalances in the number of LTE SL and NR SL radios at a given location and / or time, and the amount of resource pool allocated to each technology. In contrast, dynamic co-channel coexistence enables efficient spectrum use because time-frequency resources are dynamically shared by LTE SL and NR SL in a distributed manner.

[0040] Resource allocation in dynamic channel coexistence uses multi-RAT channel sensing information. However, as mentioned above, direct exchange of such information between UEs of different RATs may not be possible. At least one embodiment of the present disclosure addresses the above problem in sharing channel sensing information between UEs.

[0041] 10 is a flowchart illustrating a method 1000 for forwarding at least one of resource reservation information or channel sensing information in sidelink communication according to one embodiment of the present disclosure. The method may be performed by a node in the sidelink communication. The node may be a network node, a roadside unit, a relay node, or another UE in the sidelink communication (e.g., a UE other than at least one of the first UE or the second UE).

[0042] The method 1000 includes receiving 1002, from at least one first UE, at least one of resource reservation information or channel sensing information obtained by the at least one first UE. For example, in one embodiment, the node receives 1002 the resource reservation information or channel sensing information obtained by the first UE in sidelink communication. The first UE may receive at least one of the channel sensing information and the resource reservation information. The first UE may acquire at least one of the resource reservation information or the channel sensing information by performing a channel sensing operation. For example, the first UE may perform channel sensing in the sensing window shown in FIG. 2 or the sensing window shown in FIG. 5A. The first UE may acquire the resource reservation information based on decoding sidelink control information (SCI) included in the received sidelink signal. In one embodiment, the sidelink channel sensing information may include at least one of a received signal strength indicator (RSSI) or a reference signal received power (RSRP) of the sidelink signal. In one embodiment, the channel sensing information may further include at least one of the RAT for which the channel sensing information was acquired, the location of the first UE, a timestamp indicating when the channel sensing operation was performed, or a resource pool for which the channel sensing operation was performed.

[0043] In one embodiment, a node may receive sidelink channel sensing information that includes multiple data sets for the same RAT. In this embodiment, the node may aggregate multiple data sets for the same RAT, for example, by averaging radio measurements across the multiple data sets or by keeping only the highest or lowest measurements.

[0044] In one embodiment, the node may receive at least one of resource reservation information or channel sensing information from multiple UEs. In this embodiment, the at least one of the resource reservation information or channel sensing information includes multiple data sets received from the multiple UEs. The node may receive the multiple data sets simultaneously or at different times within a predetermined threshold. The node may further map the physical locations of each of the multiple UEs to at least one of a cell identity (ID), a zone ID, or a roadside unit (RSU) ID.

[0045] In one embodiment, at least one of the resource reservation information or the channel sensing information may include multiple data sets received within a predetermined time threshold. The multiple data sets may be received from a single UE or multiple UEs. In this embodiment, the node may determine the validity of each of the multiple data sets. The node may further remove one or more data sets from the multiple data sets that are determined to be invalid.

[0046] The method 1000 includes a step 1004 of storing at least one of the resource reservation information or the channel sensing information. For example, the node may store the received at least one of the resource reservation information or the channel sensing information in an internal memory and / or an external memory. In one embodiment, the at least one of the resource reservation information or the channel sensing information is stored in a core network node. In one embodiment, the at least one of the resource reservation information or the channel sensing information is stored as one or more data sets, each of the one or more data sets being associated with a timer, a resource pool, a RAT, or a location of the first UE.

[0047] The method 1000 includes transmitting 1006 the received at least one of the resource reservation information or the channel sensing information to the second UE. For example, the node may transmit 1006 the received at least one of the resource reservation information or the channel sensing information to the second UE. In one embodiment, the node transmits 1006 the received at least one of the resource reservation information or the channel sensing information to the second UE after the second UE enters a radio resource control (RRC) connected mode or an RRC inactive mode. The node may transmit at least one of the resource reservation information or the channel sensing information to the second UE. The node may transmit at least one of the resource reservation information or the channel sensing information via an RRC container or an RRC message. The node may also transmit at least one of the resource reservation information or the channel sensing information in a Medium Access Control (MAC) Control Element (CE).

[0048] In one embodiment, the node may periodically transmit at least one of resource reservation information or channel sensing information to the second UE. In one embodiment, the node may transmit at least one of resource reservation information or channel sensing information to the second UE based on a request for at least one of resource reservation information or channel sensing information received from the second UE. In one embodiment, the request received from the second UE may include a request for at least one of resource reservation information or channel sensing information for one or more other UEs that use a resource pool that overlaps with the resource pool used by the second UE but operate on a different RAT. The overlapping resource pool may be the same resource pool or a partially overlapping resource pool.

[0049] In one embodiment, at least one of the resource reservation information or the channel sensing information is received by the second UE and used to avoid sensing of all or a portion of the resource pool by excluding one or more resources based on the at least one of the resource reservation information or the channel sensing information. For example, upon receiving the at least one of the resource reservation information or the channel sensing information, the second UE may identify resources reserved by other UEs and exclude such reserved resources during resource selection.

[0050] In one embodiment, upon receiving at least one of the resource reservation information or the channel sensing information, the node may start a timer for a data set of the one or more data sets and delete the data set upon expiration of the timer, which time may be preset or configured by the network.

[0051] In one embodiment, the request for at least one of the resource reservation information or the channel sensing information received from the second UE includes the absolute location of the second UE. In this embodiment, for example, the node may further calculate a physical distance between the first UE and the second UE. If the physical distance between the first UE and the second UE is below a predetermined threshold, the node may determine that the at least one of the resource reservation information or the channel sensing information was obtained near the second UE and is therefore associated with the second UE.

[0052] In one embodiment, the request for at least one of the resource reservation information or the channel sensing information received from the second UE includes a geographical location of the first UE, such as at least one of a cell ID, a zone ID, or an RSU ID of the first UE. The node may further determine whether at least one of resource reservation information or channel sensing information associated with the ID is associated with the second UE. The node may further determine a data set corresponding to the second UE based on a mapping between a location of the second UE and a location of the first UE.

[0053] In one embodiment, the node may further transmit to the second UE a response message including an indication of whether at least one of the resource reservation information or the channel sensing information is considered relevant to the second UE, the location of the first UE, or at least one of the information related to the second UE.

[0054] 11 is a schematic diagram illustrating a method for providing location information and at least one of resource reservation information and channel sensing information in sidelink communication according to an embodiment of the present disclosure. Method 1100 may be performed by a UE in sidelink communication.

[0055] The method 1100 includes performing 1102 a sidelink channel sensing operation to obtain at least one of resource reservation information or channel sensing information, the at least one of the resource reservation information or the channel sensing information being associated with location information of the UE.

[0056] For example, a UE in sidelink communication may acquire at least one of resource reservation information or channel sensing information by performing a channel sensing operation. For example, the UE may perform background channel sensing during the sensing window shown in FIG. 2 or the sensing window shown in FIG. 5A. The UE may acquire the resource reservation information based on decoding an SCI included in a received sidelink signal. The sidelink channel sensing information may include at least one of a received signal strength indicator (RSSI) or a reference signal received power (RSRP) of the sidelink signal. The channel sensing information may further include at least one of the RAT from which the channel sensing information was acquired, the location of the UE, a timestamp indicating when the channel sensing operation was performed, or a resource pool from which the channel sensing operation was performed.

[0057] The method 1100 may include step 1104 of reporting location information and at least one of resource reservation information or channel sensing information to a device in sidelink communication to enable the device to provide the location information and at least one of the resource reservation information or channel sensing information to other UEs. The location information and at least one of the resource reservation information or channel sensing information may be used by the other UEs to avoid sensing all or part of a resource pool by excluding one or more resources based on the location information and at least one of the resource reservation information or channel sensing information. For example, the other UEs may refrain from sensing resources indicated to be used by other devices based on the received location information and at least one of the resource reservation information or channel sensing information. The device may be a node in sidelink communication, such as a network node, a roadside unit, a relay node, or one or more other UEs in sidelink communication.

[0058] The UE may periodically or immediately report the location information and at least one of the resource reservation information or the channel sensing information to the device based on the UE configuration or pre-configuration. In one embodiment, the UE may immediately report the location information and at least one of the resource reservation information or the channel sensing information to the device whenever the UE has the location information and at least one of the resource reservation information or the channel sensing information. In this embodiment, the UE configuration may be conveyed to the UE in dedicated RRC signaling in a reconfiguration message or a broadcast message, in a medium access control (MAC) protocol control element (CE), or as a configuration in a NAS protocol data unit. When the location information and at least one of the resource reservation information or the channel sensing information is reported to the device immediately, the arrival interval of the location information and at least one of the resource reservation information or the channel sensing information may be controlled by a timer included in the UE, and the UE starts the timer after sending a report and waits for the timer to expire before sending another report. Is the timer fixed? , may be preconfigured (e.g., in the UE) or configured by the RRC protocol, the NAS protocol, or the MAC protocol.

[0059] In one embodiment, the location information and at least one of the resource reservation information or the channel sensing information are reported to the device based on a trigger event that triggers the reporting. The trigger event may be configured in an RRC reconfiguration message or a MAC protocol control element, or may be configured as an indication in a NAS protocol data unit. The trigger event may also be preconfigured in the UE. The trigger event may include at least one of the arrival of multiple UEs, a change in received signal power, or an interference level.

[0060] In one embodiment, the UE operates on an LTE network, and the location information and at least one of the resource reservation information or the channel sensing information are reported to the device using mobile originated early data transmission (MO-EDT) or pre-configured uplink resource (PUR). In one embodiment, the UE operates on an NR network, and the location information and at least one of the resource reservation information or the channel sensing information are reported to the device using a small data transmission (SDT) procedure.

[0061] 12 is a schematic diagram illustrating a method 1200 for obtaining at least one of resource reservation information or sidelink channel sensing information from a device in a communication network, according to one embodiment of the present disclosure. The method 1200 may be performed by a UE in sidelink communication.

[0062] The method 1200 may include step 1202 of transmitting a request for at least one of resource reservation information or channel sensing information to the device. In one embodiment, the request for at least one of resource reservation information or channel sensing information may further include at least one of a RAT of the UE, a location of the UE, a cell ID of the UE, or a zone ID of the UE. In one embodiment, the channel sensing information may include at least one of a received signal strength indicator (RSSI) or a reference signal received power (RSRP) of the sidelink signal. In one embodiment, the channel sensing information may further include at least one of a RAT from which the channel sensing information was obtained, a location of the other UE, a timestamp indicating when the channel sensing operation was performed, or a resource pool from which the channel sensing operation was performed.

[0063] In one embodiment, the UE sends a request for sidelink channel sensing information before the UE starts a channel sensing window, which may be the channel sensing window shown in Figure 2 or Figure 5A. In one embodiment, the UE sends a request for at least one of resource reservation information or channel sensing information at the end of the channel sensing window and before the start of a resource selection window.

[0064] In one embodiment, method 1200 does not perform step 1202 and only performs step 1204, described below.

[0065] The method 1200 may include receiving 1204 at least one of resource reservation information or channel sensing information from the device, where the at least one of the resource reservation information or channel sensing information does not apply to the device. In one embodiment, the at least one of the resource reservation information or channel sensing information is used by the UE to avoid sensing all or part of a resource pool by excluding one or more resources based on at least one of the resource reservation information or channel sensing information. In one embodiment, the UE refrains from sensing resources that are indicated to be used by other devices based on the received at least one of the resource reservation information or channel sensing information. In one embodiment, the UE performs resource selection by at least one of excluding one or more subframes due to unmonitored resources in the channel sensing window from the resource selection window or excluding one or more resources reserved by other UEs from the resource selection window if the corresponding SL-RSRP exceeds a configured or pre-configured SL-RSRP exclusion threshold. In one embodiment, the UE may further integrate the received at least one of the resource reservation information or channel sensing information with sensing information collected by the UE during the channel sensing window.

[0066] In one embodiment, the UE may further perform resource selection by at least one of excluding one or more subframes due to unmonitored resources in the channel sensing window from the resource selection window, excluding one or more resources reserved by other UEs on the same RAT from the resource selection window if the corresponding SL-RSRP exceeds a configured or pre-configured SL-RSRP exclusion threshold, or excluding resources reserved by other UEs on other RATs from the resource selection window if the corresponding SL-RSRP exceeds an inter-RAT SL-RSRP exclusion threshold. In one embodiment, the inter-RAT SL-RSRP exclusion threshold is defined using an offset from an existing configured or pre-configured SL-RSRP threshold. The offset may be pre-configured or configured, or may be adjusted incrementally based on the indicated location data. In one embodiment, the inter-RAT SL-RSRP exclusion threshold is determined as a function of the reported location information.

[0067] FIG. 13 is a block diagram of a device 1300 according to one embodiment of the present disclosure. The device 1300 may be a communication node, such as a network node, a roadside unit, a relay node, or a UE. The device 1300 may take any form, including, but not limited to, a computer system, a vehicle, a vehicle-mounted component, a roadside unit, a laptop computer, a wireless terminal including a mobile phone, a wireless handheld device, a wireless personal device, or any other form. The device 1300 may include an antenna 1302 that may be used to transmit and receive electromagnetic signals to and from a base station or other device. The antenna 1302 may include one or more antenna elements and may enable various input / output antenna configurations, such as a multiple input multiple output (MIMO) configuration, a multiple input single output (MISO) configuration, a single input multiple output (SIMO) configuration, and the like. In one embodiment, the antenna 1302 may include multiple (e.g., tens or hundreds) antenna elements and may enable multi-antenna functions such as beamforming. In one embodiment, antenna 1302 is a single antenna.

[0068] The device 1300 may include a transceiver 1304 coupled to an antenna 1302. The transceiver 1304 may be a wireless transceiver in the device 1300 and may communicate bidirectionally with a base station or other devices. For example, the transceiver 1304 may receive / transmit wireless signals to / from a UE or an RSU in sidelink communication. The transceiver 1304 may include a modem for modulating packets, providing the modulated packets to the antenna 1302 for transmission, and demodulating packets received from the antenna 1302.

[0069] The device 1300 may include memory 1306. The memory 1306 may be any type of computer-readable storage medium, including volatile or non-volatile memory devices, or a combination thereof. Computer-readable storage media include, but are not limited to, non-transitory computer storage media. Non-transitory storage media may be accessed by a general-purpose computer or a special-purpose computer. Examples of non-transitory storage media include, but are not limited to, portable computer diskettes, hard disks, random access memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM), electrically erasable programmable ROM (EEPROM), digital versatile disks (DVDs), flash memory, compact disk (CD) ROM or other optical disk storage, magnetic disk storage or other magnetic storage devices, and the like. The non-transitory media may be used to carry or store desired program code means (e.g., instructions and / or data structures) and may be accessed by a general-purpose or special-purpose computer or a general-purpose or special-purpose processor. In some examples, the software / program code may be transmitted from a remote source (e.g., a website, a server, etc.) using coaxial cable, fiber optic cable, twisted pair, digital subscriber line (DSL), or wireless technologies such as infrared, radio, and microwave. In such examples, coaxial cable, fiber optic cable, twisted pair, DSL, or wireless technologies such as infrared, radio, and microwave are within the definition of medium. Combinations of the above examples are also within the scope of computer-readable media.

[0070] The device 1306 may store information related to the identities of the device 1300 and signals and / or data received by the antenna 1302. The memory 1306 may also store post-processed signals and / or data. The memory 1306 may also store computer-readable program instructions, mathematical models, and algorithms used for signal processing in the transceiver 1304 and calculations in the processor 1308. The memory 1306 may further store computer-readable program instructions executed by the processor 1308 to operate the device 1300 to perform various functions described in this disclosure. In some examples, the memory 1306 may include a basic input / output system (BIOS), which may control basic hardware or software operations, such as interactions with peripheral components or devices.

[0071] The computer-readable program instructions of the present disclosure may be assembler instructions, instruction set architecture (ISA) instructions, machine instructions, machine-dependent instructions, microcode, firmware instructions, state setting data, or source code or object code written in any combination of one or more programming languages, including object-oriented programming languages ​​and conventional procedural programming languages. The computer-readable program instructions may be executed entirely on a computing device as a standalone software package, or may be executed partially on a first computing device and partially on a second computing device remote from the first computing device. In the latter scenario, the second, remote computing device may be connected to the first computing device via any type of network, including a local area network (LAN) or a wide area network (WAN).

[0072] The device 1300 may include a processor 1308, which may include any hardware device having processing capabilities. The processor 1308 may be a general-purpose processor, a digital signal processor (DSP), a central processing unit (CPU), a microcontroller, an application-specific integrated circuit (ASIC), a field-programmable gate array (FPGA), a programmable The processor 1308 may include at least one of a gate logic device, a discrete gate or transistor logic component, a discrete hardware component, or another programmable logic device. Examples of a general-purpose processor include, but are not limited to, a microprocessor, any conventional processor, controller, microcontroller, or state machine. In one embodiment, the processor 1308 may be implemented using a combination of devices (e.g., a combination of a DSP and a microprocessor, multiple microprocessors, one or more microprocessors in conjunction with a DSP core, or any other such configuration). The processor 1308 may receive downlink or sidelink signals from the transceiver 1304 and further process the signals. The processor 1308 may also receive data packets from the transceiver 1304 and further process the packets. In one embodiment, the processor 1308 may be configured to operate a memory using a memory controller. In one embodiment, the memory controller may be integrated into the processor 1308. The processor 1308 may be configured to execute computer-readable instructions stored in a memory (e.g., memory 1306) to cause the device 1300 to perform various functions.

[0073] The device 1300 may include a global positioning system (GPS) 1310. The GPS 1310 may be used to enable location-based services or other services based on the geographic location of the device 1300. The GPS 1310 may receive global navigation satellite system (GNSS) signals from a single satellite or multiple satellite signals via the antenna 1302 and provide the geographic location of the device 1300 (e.g., the coordinates of the device 1300).

[0074] The device 1300 may include input / output (I / O) devices 1312 that may be used to communicate the results of signal processing and calculations to a user or other devices. The I / O devices 1312 may include a user interface including a display and input devices for sending user commands to the processor 1308. The display may be configured to display the status of signal reception at the device 1300, data stored in the memory 1306, the status of signal processing, and calculation results. The display may include, but is not limited to, a cathode ray tube (CRT), a liquid crystal display (LCD), a light emitting diode (LED), a gas plasma display, a touchscreen, or other image projection devices for displaying information to a user. The input devices may be any type of computer hardware equipment used to receive data and control signals from a user. The input devices may include, but are not limited to, a keyboard, a mouse, a scanner, a digital camera, a joystick, a trackball, cursor direction keys, a touchscreen monitor, or an audio / video commander.

[0075] The device 1300 may further include a machine interface 1314 , such as an electrical bus, that connects the transceiver 1304 , the memory 1306 , the processor 1308 , the GPS 1310 , and the I / O devices 1312 .

[0076] In one embodiment, the device 1300 may be configured or programmed to forward at least one of resource reservation information or channel sensing information in sidelink communication. For example, the device 1300 may be a node in sidelink communication, and the processor 1308 executes instructions stored in the memory 1306 to receive, from at least one first user equipment (UE), at least one of resource reservation information or channel sensing information acquired by the at least one first UE, store the at least one of the resource reservation information or channel sensing information, and forward the resource reservation information or channel sensing information to the sidelink node. The device 1300 may be configured to transmit the received at least one of the resource reservation information or the channel sensing information to the second UE. The device 1300 may include other well-known elements of a node. For brevity, the other well-known elements are omitted herein.

[0077] The processor 1308 may be further configured to execute instructions stored in the memory 1306 to periodically transmit at least one of resource reservation information or channel sensing information to the second UE. The processor 1308 may be further configured to execute instructions stored in the memory 1306 to receive a request for at least one of resource reservation information or channel sensing information from the second UE and to transmit at least one of resource reservation information or channel sensing information to the second UE in response to the request. The at least one of resource reservation information or channel sensing information is stored as one or more data sets. Each of the one or more data sets is associated with at least one of a timer, a resource pool, a RAT, or a location of the first UE. Upon receiving the at least one of resource reservation information or channel sensing information, the processor 1308 may be further configured to execute instructions stored in the memory to start a timer for a data set of the one or more data sets and delete the data set upon expiration of the timer.

[0078] The channel sensing information may include multiple data sets of the same RAT, and the processor 1308 may be further configured to execute instructions stored in the memory 1306 to integrate the multiple data sets of the same RAT by averaging the radio measurements across the multiple data sets or by retaining only the highest or lowest measurements.

[0079] The device 1300 may receive at least one of resource reservation information or channel sensing information from multiple UEs. The at least one of the resource reservation information or channel sensing information may include multiple data sets received from the multiple UEs. In one embodiment, the device 1300 may receive the multiple data sets from the multiple UEs simultaneously. In another embodiment, the device 1300 may receive the multiple data sets from the multiple UEs at different times where the time difference is within a predetermined threshold. The processor 1308 may be further configured to execute instructions stored in the memory 1306 to map the physical locations of each of the multiple UEs to at least one of a cell identification (ID), a zone ID, or a roadside unit (RSU) ID.

[0080] In one embodiment, at least one of the resource reservation information or the channel sensing information received by the device 1300 may include multiple data sets received within a predetermined time threshold. In this embodiment, the processor 1308 is configured to execute instructions stored in the memory 1306 to determine validity of each set of sidelink channel sensing information among the multiple sets and to remove one or more sets of sidelink channel sensing information among the multiple sets that are determined to be invalid.

[0081] The processor 1308 may be further configured to execute instructions stored in the memory 1306 to calculate a physical distance between the first UE and the second UE if the request includes an absolute location of the first UE, and to determine whether at least one of resource reservation information or channel sensing information associated with at least one of a cell ID, a zone ID, or an RSU ID is associated with the second UE. The processor 1308 may be further configured to execute instructions stored in the memory 1306 to determine that at least one of resource reservation information or channel sensing information is associated with the second UE if the physical distance between the first UE and the second UE is below a predetermined threshold.

[0082] The processor 1308 may be further configured to execute instructions stored in the memory 1306 to determine a data set corresponding to the second UE based on a mapping between a location of the second UE and a location of the first UE. The processor 1308 may be further configured to execute instructions stored in the memory 1306 to send to the second UE a response message including an indication of whether at least one of resource reservation information or channel sensing information is deemed relevant to the second UE, the location of the first UE, or information relevant to the second UE.

[0083] In one embodiment, the device 1300 may be configured or programmed to provide location information and at least one of resource reservation information and channel sensing information in sidelink communication. For example, the device 1300 may be a UE in sidelink communication, and the processor 1308 may execute instructions stored in the memory 1306 to perform sidelink channel sensing operations to obtain at least one of resource reservation information and channel sensing information associated with the UE's location information and to report the location information and at least one of the resource reservation information and channel sensing information to an apparatus in sidelink communication to enable the apparatus to provide the location information and at least one of the resource reservation information and channel sensing information to another UE. The apparatus may be a communication node, such as a network node, a roadside unit, a relay node, or another UE.

[0084] The processor 1308 may execute instructions stored in the memory 1306 to periodically report the location information and at least one of the resource reservation information or the channel sensing information to the device. Alternatively, the processor 1308 may execute instructions stored in the memory 1306 to report the location information and at least one of the resource reservation information or the channel sensing information to the device as soon as the device 1300 has the location information and at least one of the resource reservation information or the channel sensing information. Periodic reporting or immediate reporting is determined based on configuration or pre-configuration by the network. The configuration may be conveyed to the device 1300 in dedicated RRC signaling, in a reconfiguration message or a broadcast message, in a medium access control (MAC) protocol control element, or as a configuration in a NAS protocol data unit.

[0085] If the location information and at least one of the resource reservation information or channel sensing information are reported to the device immediately, the arrival interval between the location information and at least one of the resource reservation information or channel sensing information is controlled by a timer included in the device 1300, which starts the timer after sending a report and waits for the timer to expire before sending another report. The timer may be fixed, pre-configured (e.g., in the UE), or set by a radio resource control (RRC) protocol, a non-access stratum (NAS) protocol, or a medium access control (MAC) protocol.

[0086] The location information and at least one of the resource reservation information or the channel sensing information may be reported to the device based on a trigger event that triggers the reporting. The trigger event may be configured in an RRC reconfiguration message, in a MAC protocol control element, or as an indication in a NAS protocol data unit, or may be preconfigured in the UE. The trigger event may include at least one of the arrival of multiple UEs including the UE, a change in received signal power, or an interference level. In one embodiment, the device 1300 may operate on an LTE network, and the location information and the resource reservation information or the channel sensing information may be reported to the device based on a trigger event that triggers the reporting. The trigger event may be configured in an RRC reconfiguration message, in a MAC protocol control element, or as an indication in a NAS protocol data unit, or may be preconfigured in the UE. The trigger event may include at least one of the arrival of multiple UEs including the UE, a change in received signal power, or an interference level. At least one of the resource reservation information or the channel sensing information is reported to the device using Mobile Originated Early Data Transmission (MO-EDT) or Pre-configured Uplink Resources (PUR). In one embodiment, the device 1300 may operate on an NR network, and the location information and at least one of the resource reservation information or the channel sensing information is reported to the device using a Small Data Transmission (SDT) procedure.

[0087] In one embodiment, the device 1300 may be configured or programmed to obtain at least one of resource reservation information or channel sensing information in sidelink communication. For example, the device 1300 may be a UE in sidelink communication, and the processor 1308 may execute instructions stored in the memory 1306 to receive at least one of resource reservation information or channel sensing information from the device. The at least one of the resource reservation information or channel sensing information applies to other UEs and does not apply to the device. In one embodiment, the processor 1308 is configured to execute instructions stored in the memory to send a request for at least one of resource reservation information or channel sensing information to the device and receive at least one of the resource reservation information or channel sensing information in response to the request. The device may be a communication node, such as a network node, a roadside unit, a relay node, or another UE.

[0088] The request for at least one of the resource reservation information or the channel sensing information may further include at least one of the radio access technology (RAT) of the device 1300, the location of the device 1300, the cell ID of the device 1300, or the zone ID of the device 1300. The at least one of the resource reservation information or the channel sensing information may be used by the device 1300 to avoid sensing of all or part of a resource pool by excluding one or more resources based on the at least one of the resource reservation information or the channel sensing information. The channel sensing information may include at least one of a received signal strength indicator (RSSI) or a reference signal received power (RSRP) of a sidelink signal. The channel sensing information may further include at least one of the RAT from which the channel sensing information was obtained, the location of the other UE, a timestamp indicating when the channel sensing operation was performed, or the resource pool from which the channel sensing operation was performed.

[0089] The processor 1308 may be further configured to execute the instructions stored in the memory 1306 to send a request for at least one of resource reservation information or channel sensing information before the UE starts a channel sensing window. The processor 1308 may be further configured to execute the instructions stored in the memory 1306 to refrain from sensing resources indicated to be used by other devices based on the received at least one of the resource reservation information or the channel sensing information. The processor 1308 may be further configured to execute the instructions stored in the memory 1306 to perform resource selection by at least one of excluding from the resource selection window one or more subframes due to unmonitored resources in the channel sensing window or excluding from the resource selection window one or more resources reserved by other UEs if the corresponding SL-RSRP exceeds a configured or preset SL-RSRP exclusion threshold.

[0090] The request for at least one of the resource reservation information or the channel sensing information may be transmitted at the end of the channel sensing window and before the start of the resource selection window. The UE may be further configured to integrate the received at least one of the resource reservation information or the channel sensing information with sensing information collected by the UE during the channel sensing window.

[0091] The processor 1308 may be further configured to execute instructions stored in the memory to perform resource selection by at least one of excluding one or more subframes due to unmonitored resources in the channel sensing window from the resource selection window, excluding one or more resources reserved by other UEs on the same RAT from the resource selection window if the corresponding SL-RSRP exceeds a configured or pre-configured SL-RSRP exclusion threshold, or excluding resources reserved by other UEs on other RATs from the resource selection window if the corresponding SL-RSRP exceeds an inter-RAT SL-RSRP exclusion threshold. The inter-RAT SL-RSRP exclusion threshold may be defined using an offset from an existing configured or pre-configured SL-RSRP threshold. The offset may be pre-configured or configured, or may be adjusted incrementally based on the indicated location data. The inter-RAT SL-RSRP exclusion threshold may be determined as a function of reported location information.

[0092] As used in this disclosure, the use of the word "or" in a list of items indicates an inclusive list. A list of items may be preceded by phrases such as "at least one of" or "one or more of." For example, a list of at least one of A, B, or C includes A or B or C, or AB (i.e., A and B) or AC or BC, or ABC (i.e., A and B and C). Also, as used in this disclosure, the phrase "based on" preceding a list of conditions should not be construed as "based only on" the set of conditions, but rather as "based at least in part on" the set of conditions. For example, a result described as "based on condition A" may be based on both condition A and condition B without departing from the scope of this disclosure.

[0093] As used herein, the terms "comprise," "include," or "contain" are used interchangeably, may have the same meaning, and should be construed as inclusive and open-ended. The terms "comprise," "include," or "contain" may be used before a list of elements to indicate that at least all of the elements listed in the list are present, but that other elements not in the list may also be present. For example, if A comprises B and C, then both {B,C} and {B,C,D} are within the scope of A.

[0094] The present disclosure, in connection with the accompanying drawings, describes exemplary configurations that do not represent all possible implementations or all configurations within the scope of the present disclosure. The term "exemplary" should not be interpreted as "preferred" or "advantageous over other examples," but rather as "example, instance, or example." Upon reading this disclosure, including the description of the embodiments and the drawings, those skilled in the art will understand that the technology disclosed herein may be implemented using alternative embodiments. Those skilled in the art will understand that embodiments, or specific features of the embodiments described herein, may be combined to arrive at yet other embodiments for practicing the technology described in this disclosure. Thus, the present disclosure is not limited to the examples and designs described herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

[0095] The flowcharts and block diagrams in the figures illustrate example architecture, functionality, and operation of possible implementations of systems, methods, and devices according to various embodiments. It should be noted that in some alternative implementations, the functions noted in the blocks may occur out of the order depicted. For example, two blocks shown in succession may in fact be executed substantially concurrently, or the blocks may be executed in the reverse order, depending on the functionality involved. Similarly, methods consistent with various embodiments may include additional steps, or certain steps may be omitted or combined.

[0096] It is understood that the described embodiments are not mutually exclusive, and that elements, components, materials, or steps described in connection with one exemplary embodiment may be combined with, or excluded from, other embodiments in any suitable manner to achieve desired design objectives.

[0097] References herein to "some embodiments" or "some exemplary embodiments" mean that a particular feature, structure, or characteristic described in connection with that embodiment can be included in at least one embodiment. The appearances of the phrases "one embodiment," "some embodiments," or "another embodiment" in various places in this disclosure do not necessarily refer to the same embodiment, nor are separate or alternative embodiments necessarily mutually exclusive from other embodiments.

[0098] Furthermore, the articles "a" and "an," as used in this disclosure and the appended claims, should generally be construed to mean "one or more," unless otherwise specified or unless the singular form is clearly intended from the context.

[0099] Unless expressly stated otherwise, each numerical value and range should be interpreted as approximate, as if the value or range were preceded by the word "about" or "approximately."

[0100] Although elements in the following method claims, if present, are recited in a particular order, the elements are not necessarily intended to be limited to being performed in that particular order, unless the claim recitation otherwise suggests a particular order for performing some or all of the elements.

[0101] It is understood that certain features of the present disclosure, which are, for clarity, described in the context of separate embodiments, may also be provided in combination in a single embodiment. Conversely, various features herein that are, for brevity, described in the context of a single embodiment, may also be provided separately or in any suitable subcombination or with any other described embodiment herein. Certain features described in the context of various embodiments are not essential features of those embodiments, unless expressly stated otherwise.

[0102] It will further be understood that various changes, substitutions and variations in the details, materials and arrangements of parts described and illustrated to explain the nature of the described embodiments may be made by those skilled in the art without departing from the scope of the present invention, and therefore the following claims will embrace all such alternatives, modifications and variations that fall within the terms of the claims.

[0103] Appendix 1 In sidelink communication, at least one of resource reservation information and channel sensing information is transmitted. a device for transferring at least one a memory for storing instructions; Executing the instructions stored in the memory, receiving, from at least one first user equipment (UE), the at least one of the resource reservation information or the channel sensing information obtained by the at least one first UE; storing the at least one of the resource reservation information or the channel sensing information; transmitting the received at least one of the resource reservation information or the channel sensing information to a second UE; a processor that executes Equipped with Device.

[0104] Appendix 2 the at least one of the resource reservation information or the channel sensing information is obtained by performing channel sensing by the at least one first UE; 10. The apparatus described in Appendix 1.

[0105] Appendix 3 The device is a network node, a roadside unit, a relay node, or another UE in the sidelink communication. 10. The apparatus described in Appendix 1.

[0106] Appendix 4 The processor executes the instructions stored in the memory, periodically transmitting the at least one of the resource reservation information or the channel sensing information to the second UE; Further implementation of 10. The apparatus described in Appendix 1.

[0107] Appendix 5 The processor executes the instructions stored in the memory to receiving a request for the at least one of the resource reservation information or the channel sensing information from the second UE; transmitting the at least one of the resource reservation information or the channel sensing information to the second UE in response to the request; Further implementation of 10. The apparatus described in Appendix 1.

[0108] Appendix 6 the request received from the second UE includes a request for the at least one of the resource reservation information or the channel sensing information regarding one or more other UEs that use a resource pool that overlaps with a resource pool used by the second UE but operate on a different radio access technology (RAT). 10. The apparatus described in Appendix 5.

[0109] Appendix 7 the at least one of the resource reservation information or the channel sensing information is used by the second UE to avoid sensing of all or part of a resource pool by excluding one or more resources based on the at least one of the resource reservation information or the channel sensing information. 10. The apparatus described in Appendix 1.

[0110] Appendix 8 The resource reservation information is obtained by the first UE based on decoding of sidelink control information (SCI) included in a sidelink signal. 1. The apparatus described in Appendix 2.

[0111] Appendix 9 The channel sensing information includes at least one of a received signal strength indicator (RSSI) or a reference signal received power (RSRP) of a sidelink signal. 1. The apparatus described in Appendix 2.

[0112] Appendix 10 The channel sensing information further includes at least one of a RAT from which the channel sensing information was obtained, a location of the first UE, a timestamp indicating when a channel sensing operation was performed, or a resource pool from which the channel sensing operation was performed. 10. The apparatus described in Appendix 9.

[0113] Appendix 11 the device is the network node, and the at least one of the resource reservation information or the channel sensing information is transmitted to the second UE via a Radio Resource Control (RRC) container or an RRC message. 10. The apparatus described in Appendix 3.

[0114] Appendix 12 the device is the network node, and the at least one of the resource reservation information or the channel sensing information is transmitted to the second UE in a medium access control (MAC) control element (CE). 10. The apparatus described in Appendix 3.

[0115] Appendix 13 the at least one of the resource reservation information or the channel sensing information is stored as one or more data sets, each of the one or more data sets being associated with at least one of a timer, a resource pool, a RAT, or a location of the first UE; 10. The apparatus described in Appendix 1.

[0116] Appendix 14 The processor executes the instructions stored in the memory, starting the timer for a data set of the one or more data sets upon receiving the at least one of the resource reservation information or the channel sensing information; deleting the data set upon expiration of the timer; Further implementation of 14. The apparatus of claim 13.

[0117] Appendix 15 the channel sensing information includes multiple data sets of the same RAT; The processor executes the instructions stored in the memory, aggregating the multiple data sets of the same RAT by averaging radio measurements across the multiple data sets or by keeping only the highest or lowest measurements; To execute 10. The apparatus described in Appendix 1.

[0118] Appendix 16 the first UE includes a plurality of UEs, and the at least one of the resource reservation information or the channel sensing information includes a plurality of data sets received from the plurality of UEs simultaneously or at different times within a predetermined threshold time difference; 10. The apparatus described in Appendix 1.

[0119] Appendix 17 The processor executes the instructions stored in the memory to Mapping a physical location of each of the plurality of UEs to at least one of a cell identity (ID), a zone ID, or a roadside unit (RSU) ID; To execute 17. The apparatus of claim 16.

[0120] Appendix 18 the at least one of the resource reservation information or the channel sensing information includes a plurality of data sets received within a predetermined time threshold; The processor executes the instructions stored in the memory, determining the validity of each of the plurality of data sets; removing one or more datasets from the plurality of datasets that are determined to be invalid; To execute 10. The apparatus described in Appendix 1.

[0121] Appendix 19 The processor executes the instructions stored in the memory, If the request includes the absolute location of the first UE, calculating a physical distance between the first UE and the second UE; Determining whether the at least one of the resource reservation information or the channel sensing information associated with at least one of the cell ID, the zone ID, or the RSU ID is associated with the second UE; and Further implementation of 10. The apparatus described in Appendix 5.

[0122] Appendix 20 The processor executes the instructions stored in the memory, determining that the at least one of the resource reservation information or the channel sensing information is associated with the second UE if the physical distance between the first UE and the second UE is below a predetermined threshold; Further implementation of 19. The apparatus of claim 19.

[0123] Appendix 21 The processor executes the instructions stored in the memory to determining a data set corresponding to the second UE based on a mapping between a location of the second UE and a location of the first UE; Further implementation of 10. The apparatus described in Appendix 1.

[0124] Appendix 22 The processor executes the instructions stored in the memory, transmitting at least one of a response message to the second UE including an indication of whether the at least one of the resource reservation information or the channel sensing information is considered relevant to the second UE, the location of the first UE, or information relevant to the second UE; Further implementation of 10. The apparatus described in Appendix 1.

[0125] Appendix 23 1. A user equipment (UE) for providing location information and at least one of resource reservation information or channel sensing information in sidelink communication, comprising: a memory for storing instructions; Executing the instructions stored in the memory, performing a sidelink channel sensing operation to obtain the at least one of the resource reservation information or the channel sensing information associated with location information of the UE; reporting the location information and the at least one of the resource reservation information or the channel sensing information to a device in the sidelink communication to enable the device to provide the location information and the at least one of the resource reservation information or the channel sensing information to other UEs; a processor that executes Equipped with User Equipment (UE).

[0126] Appendix 24 The location information and the at least one of the resource reservation information or the channel sensing information are reported to the device periodically based on a configuration or pre-configuration of the UE, or immediately when the UE has the location information and the at least one of the resource reservation information or the channel sensing information. UE as described in Appendix 23.

[0127] Appendix 25 The configuration of the UE is conveyed to the UE in dedicated Radio Resource Control (RRC) signaling in a reconfiguration message or a broadcast message, or in a Medium Access Control (MAC) protocol control element, or as a configuration in a Non-Access Stratum (NAS) protocol data unit; UE as described in Appendix 24.

[0128] Appendix 26 When the location information and the at least one of the resource reservation information or the channel sensing information are reported to the device immediately, the arrival interval between the location information and the at least one of the resource reservation information or the channel sensing information is controlled by a timer included in the UE, the UE starting the timer after sending a report and waiting for the timer to expire before sending another report. UE as described in Appendix 24.

[0129] Appendix 27 The timer may be fixed, pre-configured, or configured by an RRC protocol, a NAS protocol, or a MAC protocol. UE as described in Appendix 26.

[0130] Appendix 28 The location information and the at least one of the resource reservation information or the channel sensing information are reported to the device based on a trigger event that triggers the reporting, and the trigger event is configured by an RRC reconfiguration message, or in a MAC protocol control element, or as an indication in a NAS protocol data unit, or is pre-configured in the UE. UE as described in Appendix 23.

[0131] Appendix 29 The trigger event includes at least one of the following: arrival of a plurality of UEs including the UE, a change in received signal power, or an interference level; UE as described in Appendix 28.

[0132] Appendix 30 the UE operates on a Long Term Evolution (LTE) network, and the location information and the at least one of the resource reservation information or the channel sensing information are reported to the device using Mobile Originated Early Data Transmission (MO-EDT) or Pre-configured Uplink Resources (PUR). UE as described in Appendix 23.

[0133] Appendix 31 The UE operates on a New Radio (NR) network, and the location information and the at least one of the resource reservation information or the channel sensing information are reported to the device using a Small Data Transmission (SDT) procedure. UE as described in Appendix 23.

[0134] Appendix 32 The device is a network node, a roadside unit, a relay node, or another UE in the sidelink communication. UE as described in Appendix 23.

[0135] Appendix 33 A user equipment (UE) for obtaining at least one of resource reservation information or channel sensing information in sidelink communication, comprising: a memory for storing instructions; Executing the instructions stored in the memory, receiving, from a device, the at least one of the resource reservation information or the channel sensing information that applies to other UEs and does not apply to the device; a processor that executes Equipped with User Equipment (UE).

[0136] Appendix 34 The processor executes the instructions stored in the memory to transmitting a request for the at least one of the resource reservation information or the channel sensing information to the device; To execute UE as described in Appendix 33.

[0137] Appendix 35 The request for the at least one of the resource reservation information or the channel sensing information further includes at least one of a radio access technology (RAT) of the UE, a location of the UE, a cell identity (ID) of the UE, or a zone ID of the UE. UE as described in Appendix 34.

[0138] Appendix 36 the at least one of the resource reservation information or the channel sensing information is used by the UE to avoid sensing of all or part of a resource pool by excluding one or more resources based on the at least one of the resource reservation information or the channel sensing information. UE as described in Appendix 33.

[0139] Appendix 37 The channel sensing information includes at least one of a received signal strength indicator (RSSI) or a reference signal received power (RSRP) of a sidelink signal. UE as described in Appendix 33.

[0140] Appendix 38 The channel sensing information further includes at least one of a RAT from which the channel sensing information is obtained, a location of the other UE, a timestamp indicating a time when the channel sensing operation is performed, or a resource pool from which the channel sensing operation is performed. UE as described in Appendix 37.

[0141] Appendix 39 The processor executes the instructions stored in the memory, sending the request for the at least one of the resource reservation information or the channel sensing information before the UE starts a channel sensing window; To execute UE as described in Appendix 34.

[0142] Appendix 40 The processor executes the instructions stored in the memory to refraining from sensing resources indicated to be used by other devices based on the received at least one of the resource reservation information or the channel sensing information; To execute UE as described in Appendix 33.

[0143] Appendix 41 The processor executes the instructions stored in the memory, performing resource selection by excluding from a resource selection window at least one of one or more subframes due to unmonitored resources in the channel sensing window or one or more resources reserved by other UEs if the corresponding sidelink reference signal received power (SL-RSRP) exceeds a configured or pre-configured SL-RSRP exclusion threshold; Further implementation of UE as described in Appendix 40.

[0144] Appendix 42 the request for the at least one of the resource reservation information or the channel sensing information is transmitted at the end of a channel sensing window and before the start of a resource selection window. UE as described in Appendix 34.

[0145] Appendix 43 The processor executes the instructions stored in the memory to Integrating the received at least one of the resource reservation information or the channel sensing information with sensing information collected by the UE during the channel sensing window; To execute UE as described in Appendix 42.

[0146] Appendix 44 The processor executes the instructions stored in the memory to performing resource selection by excluding from the resource selection window at least one of: one or more subframes due to unmonitored resources in the channel sensing window; one or more resources reserved by other UEs on the same RAT if the corresponding SL-RSRP exceeds a configured or pre-configured SL-RSRP exclusion threshold; or one or more resources reserved by other UEs on other RATs if the corresponding SL-RSRP exceeds an inter-RAT SL-RSRP exclusion threshold; To execute UE as described in Appendix 43.

[0147] Appendix 45 the inter-RAT SL-RSRP exclusion threshold is defined using an offset from an existing or pre-configured SL-RSRP threshold; The offset is Pre-configured or configured, or It is adjusted incrementally based on the position data provided, UE as described in Appendix 44.

[0148] Appendix 46 the inter-RAT SL-RSRP exclusion threshold is determined as a function of reported location information; UE as described in Appendix 45.

[0149] Appendix 47 1. A method for transferring at least one of resource reservation information or channel sensing information in sidelink communication, comprising: receiving, from at least one first user equipment (UE), the at least one of the resource reservation information or the channel sensing information obtained by the at least one first UE; storing the at least one of the resource reservation information or the channel sensing information; transmitting the received at least one of the resource reservation information or the channel sensing information to a second UE; Including, method.

[0150] Appendix 48 the at least one of the resource reservation information or the channel sensing information is obtained by performing channel sensing by the at least one first UE; The method described in Appendix 47.

[0151] Appendix 49 The method is performed by a network node, a roadside unit, a relay node, or another UE in the sidelink communication. The method described in Appendix 47.

[0152] Appendix 50 periodically transmitting the at least one of the resource reservation information or the channel sensing information to the second UE; further comprising: The method described in Appendix 47.

[0153] Appendix 51 receiving a request for the at least one of the resource reservation information or the channel sensing information from the second UE; transmitting the at least one of the resource reservation information or the channel sensing information to the second UE in response to the request; further comprising: The method described in Appendix 47.

[0154] Appendix 52 the request received from the second UE includes a request for the at least one of the resource reservation information or the channel sensing information regarding one or more other UEs that use a resource pool that overlaps with a resource pool used by the second UE but operate on a different radio access technology (RAT). 51. The method described in Appendix 51.

[0155] Appendix 53 the at least one of the resource reservation information or the channel sensing information is used by the second UE to avoid sensing of all or part of a resource pool by excluding one or more resources based on the at least one of the resource reservation information or the channel sensing information. The method described in Appendix 47.

[0156] Appendix 54 The resource reservation information is obtained by the first UE based on decoding of sidelink control information (SCI) included in a sidelink signal. 48. The method described in Appendix 48.

[0157] Appendix 55 The channel sensing information includes at least one of a received signal strength indicator (RSSI) or a reference signal received power (RSRP) of a sidelink signal. 48. The method described in Appendix 48.

[0158] Appendix 56 The channel sensing information further includes at least one of a RAT from which the channel sensing information was obtained, a location of the first UE, a timestamp indicating when a channel sensing operation was performed, or a resource pool from which the channel sensing operation was performed. 5. The method described in Appendix 55.

[0159] Appendix 57 the method is performed by the network node, and the at least one of the resource reservation information or the channel sensing information is transmitted to the second UE via a Radio Resource Control (RRC) container or an RRC message. 49. The method described in Appendix 49.

[0160] Appendix 58 the method is performed by the network node, and the at least one of the resource reservation information or the channel sensing information is transmitted to the second UE in a Medium Access Control (MAC) Control Element (CE). 49. The method described in Appendix 49.

[0161] Appendix 59 the at least one of the resource reservation information or the channel sensing information is stored as one or more data sets, each of the one or more data sets being associated with at least one of a timer, a resource pool, a RAT, or a location of the first UE; The method described in Appendix 47.

[0162] Appendix 60 starting the timer for a data set of the one or more data sets upon receiving the at least one of the resource reservation information or the channel sensing information; deleting the data set upon expiration of the timer; further comprising: 59. The method described in Appendix 59.

[0163] Appendix 61 the channel sensing information includes multiple data sets of the same RAT; The method comprises: The plurality of data sets of the same RAT by averaging radio measurements across the plurality of data sets or by keeping only the highest or lowest measurements. Integrating sets, further comprising: The method described in Appendix 47.

[0164] Appendix 62 the first UE includes a plurality of UEs, and the at least one of the resource reservation information or the channel sensing information includes a plurality of data sets received from the plurality of UEs simultaneously or at different times within a predetermined threshold time difference; The method described in Appendix 47.

[0165] Appendix 63 Mapping the physical location of each of the plurality of UEs to at least one of a cell identity (ID), a zone ID, or a roadside unit (RSU) ID. further comprising: 62. The method described in Appendix 62.

[0166] Appendix 64 the at least one of the resource reservation information or the channel sensing information includes a plurality of data sets received within a predetermined time threshold; The method comprises: determining the validity of each of the plurality of data sets; removing one or more datasets from the plurality of datasets that are determined to be invalid; further comprising: The method described in Appendix 47.

[0167] Appendix 65 If the request includes the absolute location of the first UE, calculating a physical distance between the first UE and the second UE; determining whether the at least one of the resource reservation information or the channel sensing information associated with the at least one of the cell ID, the zone ID, or the RSU ID is associated with the second UE; further comprising: 51. The method described in Appendix 51.

[0168] Appendix 66 determining that the at least one of the resource reservation information or the channel sensing information is associated with the second UE if the physical distance between the first UE and the second UE is below a predetermined threshold; further comprising: The method described in Appendix 65.

[0169] Appendix 67 determining a data set corresponding to the second UE based on a mapping between a location of the second UE and a location of the first UE; further comprising: The method described in Appendix 47.

[0170] Appendix 68 the at least one of the resource reservation information or the channel sensing information transmitting at least one of a response message to the second UE including an indication of whether the first UE is considered associated with the second UE, a location of the first UE, or information associated with the second UE; further comprising: The method described in Appendix 47.

[0171] Appendix 69 1. A method for providing location information and at least one of resource reservation information or channel sensing information in sidelink communication, comprising: performing a sidelink channel sensing operation to obtain the at least one of the resource reservation information or the channel sensing information associated with the location information of a user equipment (UE); reporting the location information and the at least one of the resource reservation information or the channel sensing information to a device in sidelink communication to enable the device to provide the location information and the at least one of the resource reservation information or the channel sensing information to other UEs; Including, method.

[0172] Appendix 70 The location information and the at least one of the resource reservation information or the channel sensing information are reported to the device periodically based on a configuration or pre-configuration of the UE, or immediately when the UE has the location information and the at least one of the resource reservation information or the channel sensing information. 69. The method described in Appendix 69.

[0173] Appendix 71 The UE configuration is conveyed to the UE in dedicated Radio Resource Control (RRC) signaling in a reconfiguration message or a broadcast message, or in a Medium Access Control (MAC) protocol control element, or as a configuration in a Non-Access Stratum (NAS) protocol data unit; 71. The method of claim 70.

[0174] Appendix 72 If the location information and the at least one of the resource reservation information or the channel sensing information are reported to the device immediately, an arrival interval between the location information and the at least one of the resource reservation information or the channel sensing information is controlled by a timer included in the UE, and the UE starts the timer after sending a report and waits for the timer to expire before sending another report. 71. The method of claim 70.

[0175] Appendix 73 The timer may be fixed, pre-configured, or configured by an RRC protocol, a NAS protocol, or a MAC protocol. 72. The method of claim 72.

[0176] Appendix 74 The location information and the at least one of the resource reservation information or the channel sensing information are reported to the device based on a trigger event that triggers the reporting, and the trigger event is reported by an RRC reconfiguration message or a MAC protocol. configured in a network access server control element or as an indication in a NAS protocol data unit, or pre-configured in the UE; 69. The method described in Appendix 69.

[0177] Appendix 75 The trigger event includes at least one of the following: arrival of a plurality of UEs including the UE, a change in received signal power, or an interference level; 74. The method described in Appendix 74.

[0178] Appendix 76 the UE operates on a Long Term Evolution (LTE) network, and the location information and the at least one of the resource reservation information or the channel sensing information are reported to the device using Mobile Originated Early Data Transmission (MO-EDT) or Pre-configured Uplink Resources (PUR). 69. The method described in Appendix 69.

[0179] Appendix 77 The UE operates on a New Radio (NR) network, and the location information and the at least one of the resource reservation information or the channel sensing information are reported to the device using a Small Data Transmission (SDT) procedure. 69. The method described in Appendix 69.

[0180] Appendix 78 The device is a network node, a roadside unit, a relay node, or another UE in the sidelink communication. 69. The method described in Appendix 69.

[0181] Appendix 79 1. A method for obtaining at least one of resource reservation information or sidelink channel sensing information from a device in a communication network, comprising: receiving, from the device, the at least one of the resource reservation information or the channel sensing information that does not apply to the device; Including, method.

[0182] Appendix 80 transmitting a request for the at least one of the resource reservation information or the channel sensing information to the device; further comprising: 79. The method of claim 79.

[0183] Appendix 81 the request for the at least one of the resource reservation information or the channel sensing information further includes at least one of a radio access technology (RAT) of a user equipment (UE), a location of the UE, a cell identity (ID) of the UE, or a zone ID of the UE. 81. The method of claim 80.

[0184] Appendix 82 the at least one of the resource reservation information or the channel sensing information is used by the UE to avoid sensing of all or part of a resource pool by excluding one or more resources based on the at least one of the resource reservation information or the channel sensing information. 79. The method of claim 79.

[0185] Appendix 83 The channel sensing information includes at least one of a received signal strength indicator (RSSI) or a reference signal received power (RSRP) of a sidelink signal. 79. The method of claim 79.

[0186] Appendix 84 The channel sensing information further includes at least one of a RAT from which the channel sensing information was acquired, a location of the other UE, a timestamp indicating when a channel sensing operation was performed, or a resource pool from which the channel sensing operation was performed. 83. The method described in Appendix 83.

[0187] Appendix 85 sending the request for the at least one of the resource reservation information or the channel sensing information before a UE starts a channel sensing window; further comprising: 81. The method of claim 80.

[0188] Appendix 86 refraining from sensing resources indicated to be used by other devices based on the received at least one of the resource reservation information or the channel sensing information; further comprising: 79. The method of claim 79.

[0189] Appendix 87 excluding at least one of one or more subframes due to unmonitored resources in the channel sensing window or one or more resources reserved by other UEs when the corresponding sidelink reference signal received power (SL-RSRP) exceeds a configured or preconfigured SL-RSRP exclusion threshold from the resource selection window; further comprising: The method described in Appendix 86.

[0190] Appendix 88 the request for the at least one of the resource reservation information or the channel sensing information is transmitted at the end of a channel sensing window and before the start of a resource selection window. 81. The method of claim 80.

[0191] Appendix 89 Integrating the received at least one of the resource reservation information or the channel sensing information with sensing information collected by the UE during the channel sensing window; further comprising: The method described in Appendix 88.

[0192] Appendix 90 performing resource selection by excluding from the resource selection window at least one of: one or more subframes due to unmonitored resources in the channel sensing window; one or more resources reserved by other UEs on the same RAT if the corresponding SL-RSRP exceeds a configured or pre-configured SL-RSRP exclusion threshold; or one or more resources reserved by other UEs on other RATs if the corresponding SL-RSRP exceeds an inter-RAT SL-RSRP exclusion threshold; further comprising: 89. The method described in Appendix 89.

[0193] Appendix 91 the inter-RAT SL-RSRP exclusion threshold is defined using an offset from an existing or pre-configured SL-RSRP threshold; The offset is Pre-configured or configured, or It is adjusted incrementally based on the position data provided, 91. The method of claim 90.

[0194] Appendix 92 the inter-RAT SL-RSRP exclusion threshold is determined as a function of reported location information; 91. The method described in Appendix 91.

[0195] Appendix 93 A non-transitory computer-readable medium storing instructions executable by one or more processors of devices in a communications network to perform a method, comprising: The method comprises: receiving, from at least one first user equipment (UE), the at least one of the resource reservation information or the channel sensing information obtained by the at least one first UE; storing the at least one of the resource reservation information or the channel sensing information; transmitting the received at least one of the resource reservation information or the channel sensing information to a second UE; Including, Non-transitory computer-readable medium.

[0196] Appendix 94 1. A non-transitory computer-readable medium storing instructions executable by one or more processors of user equipment (UE) in a communications network to perform a method, comprising: The method comprises: performing a sidelink channel sensing operation to obtain the at least one of the resource reservation information or the channel sensing information associated with location information of the UE; The location information and the resource reservation information or the channel sensing information and reporting at least one of the location information and the resource reservation information or the channel sensing information to a device in the sidelink communication to enable the device to provide the location information and the at least one of the resource reservation information or the channel sensing information to other UEs. Including, Non-transitory computer-readable medium.

[0197] Appendix 95 1. A non-transitory computer-readable medium storing instructions executable by one or more processors of user equipment (UE) in a communications network to perform a method, comprising: The method comprises: receiving, from a device, at least one of resource reservation information or sidelink channel sensing information that does not apply to the device; Including, Non-transitory computer-readable medium.

Claims

1. 1. An apparatus for transferring at least one of resource reservation information or channel sensing information in sidelink communication, comprising: a memory for storing instructions; Executing the instructions stored in the memory, receiving, from at least one first user equipment (UE), the at least one of the resource reservation information or the channel sensing information obtained by the at least one first UE; storing the at least one of the resource reservation information or the channel sensing information; transmitting the received at least one of the resource reservation information or the channel sensing information to a second UE; a processor that executes Equipped with Device.

2. The processor executes the instructions stored in the memory to receiving a request for the at least one of the resource reservation information or the channel sensing information from the second UE; transmitting the at least one of the resource reservation information or the channel sensing information to the second UE in response to the request; Further execute the request received from the second UE includes a request for the at least one of the resource reservation information or the channel sensing information for one or more other UEs that use a resource pool that overlaps with a resource pool used by the second UE but operate on a different radio access technology (RAT).

10. The apparatus of claim 1.

3. the at least one of the resource reservation information or the channel sensing information is used by the second UE to avoid sensing of all or part of a resource pool by excluding one or more resources based on the at least one of the resource reservation information or the channel sensing information.

10. The apparatus of claim 1.

4. the at least one of the resource reservation information or the channel sensing information is obtained by performing channel sensing by the at least one first UE; the resource reservation information is obtained by the first UE based on decoding of sidelink control information (SCI) included in a sidelink signal.

10. The apparatus of claim 1.

5. the at least one of the resource reservation information or the channel sensing information is obtained by performing channel sensing by the at least one first UE; the channel sensing information includes at least one of a received signal strength indicator (RSSI) or a reference signal received power (RSRP) of a sidelink signal; 10. The apparatus of claim 1.

6. The first UE includes a plurality of UEs, and the resource reservation information or the channel sensitivity the at least one of the plurality of pieces of signaling information includes a plurality of data sets received from the plurality of UEs simultaneously or at different times within a predetermined threshold time difference; The processor executes the instructions stored in the memory to Mapping the physical location of each of the plurality of UEs to at least one of a cell identity (ID), a zone ID, or a roadside unit (RSU) ID; To execute 10. The apparatus of claim 1.

7. The processor executes the instructions stored in the memory to determining a data set corresponding to the second UE based on a mapping between the location of the second UE and the location of the first UE; Further implementation of 10. The apparatus of claim 1.

8. 1. A user equipment (UE) that provides location information and at least one of resource reservation information or channel sensing information in sidelink communication, the user equipment (UE) comprising: a memory for storing instructions; Executing the instructions stored in the memory, performing a sidelink channel sensing operation to obtain the at least one of the resource reservation information or the channel sensing information associated with location information of the UE; and reporting the location information and the at least one of the resource reservation information or the channel sensing information to a device in the sidelink communication to enable the device to provide the location information and the at least one of the resource reservation information or the channel sensing information to other UEs; a processor that executes Equipped with User Equipment (UE).

9. The location information and the at least one of the resource reservation information or the channel sensing information are reported to the device periodically based on a configuration or pre-configuration of the UE, or immediately when the UE has the location information and the at least one of the resource reservation information or the channel sensing information. The UE of claim 8.

10. the location information and the at least one of the resource reservation information or the channel sensing information are reported to the device based on a trigger event that triggers the reporting; The trigger event is configured by an RRC reconfiguration message, or in a MAC protocol control element, or as an indication in a NAS protocol data unit, or is preconfigured in the UE; The UE of claim 8.

11. the UE operates on a Long Term Evolution (LTE) network; the location information and the at least one of the resource reservation information or the channel sensing information are reported to the device using Mobile Originated Early Data Transmission (MO-EDT) or Pre-configured Uplink Resources (PUR); The UE of claim 8.

12. the UE operates on a New Radio (NR) network; the location information and the at least one of the resource reservation information or the channel sensing information are reported to the device using a small data transmission (SDT) procedure; The UE of claim 8.

13. 1. A user equipment (UE) that acquires at least one of resource reservation information or channel sensing information in sidelink communication, comprising: a memory for storing instructions; Executing the instructions stored in the memory, receiving, from a device, the at least one of the resource reservation information or the channel sensing information that applies to other UEs and does not apply to the device; a processor that executes Equipped with User Equipment (UE).

14. The processor executes the instructions stored in the memory to transmitting a request for the at least one of the resource reservation information or the channel sensing information to the device; To execute 14. The UE of claim 13.

15. the at least one of the resource reservation information or the channel sensing information is used by the UE to avoid sensing of all or part of a resource pool by excluding one or more resources based on the at least one of the resource reservation information or the channel sensing information.

14. The UE of claim 13.

16. The processor executes the instructions stored in the memory to refraining from sensing resources indicated for use by other devices based on the received at least one of the resource reservation information or the channel sensing information; To execute 14. The UE of claim 13.

17. the request for the at least one of the resource reservation information or the channel sensing information is transmitted at an end of a channel sensing window and before a start of a resource selection window; The processor executes the instructions stored in the memory to Integrating the received at least one of the resource reservation information or the channel sensing information with sensing information collected by the UE during the channel sensing window; performing resource selection by excluding from the resource selection window at least one of: one or more subframes due to unmonitored resources in the channel sensing window; one or more resources reserved by other UEs on the same RAT if the corresponding SL-RSRP exceeds a configured or pre-configured SL-RSRP exclusion threshold; or one or more resources reserved by other UEs on other RATs if the corresponding SL-RSRP exceeds an inter-RAT SL-RSRP exclusion threshold; To execute 15. The UE of claim 14.

18. 1. A method for transferring at least one of resource reservation information or channel sensing information in sidelink communication, comprising: receiving, from at least one first user equipment (UE), the at least one of the resource reservation information or the channel sensing information obtained by the at least one first UE; storing the at least one of the resource reservation information or the channel sensing information; transmitting the received at least one of the resource reservation information or the channel sensing information to a second UE; Including, method.

19. 1. A method for providing location information and at least one of resource reservation information or channel sensing information in sidelink communication, comprising: performing a sidelink channel sensing operation to obtain the at least one of the resource reservation information or the channel sensing information associated with location information of a user equipment (UE); and reporting the location information and the at least one of the resource reservation information or the channel sensing information to a device in the sidelink communication to enable the device to provide the location information and the at least one of the resource reservation information or the channel sensing information to other UEs; Including, method.

20. 1. A method for obtaining at least one of the resource reservation information or sidelink channel sensing information from a device in a communications network, comprising: receiving, from the device, the at least one of the resource reservation information or the channel sensing information that does not apply to the device; Including, method.

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