Method and apparatus for sidelink communication

Abstract

Embodiments of the disclosure relate to methods and apparatuses for sidelink communications. According to embodiments of the disclosure, a method for wireless communications performed by a first user equipment (UE) can include receiving a sidelink transmission including a first indication indicating whether a second UE has a capability to provide assistance information for resource selection, and in response to the first indication indicating that the second UE has the capability to provide the assistance information, transmitting a request for the assistance information on one or more feedback resources associated with the sidelink transmission.

Description

[0001] Information related to divisional application

[0002] This case is a divisional application. The parent application of this divisional application is the invention patent application filed on October 22, 2020, with application number 202080106489.4 and title "Method and apparatus for sidelink communication". Technical Field

[0003] Embodiments of this disclosure relate to wireless communication technology, and more specifically, to methods and apparatus for sidelink communication. Background Technology

[0004] In new radio (NR) sidelink communication, user equipment (UE) operating in mode 2 autonomously selects a sidelink source from a resource pool containing sidelink resources configured by the base station (BS) or pre-configured in the standard for performing sidelink transmissions. The UE typically performs a sensing and resource selection procedure to select and / or reserve resources for sidelink transmissions. For UEs that do not perform sensing before resource selection is triggered or require auxiliary information for resource selection (e.g., to avoid hidden nodes or half-duplex issues), a solution is needed to request or obtain sensing results or auxiliary information from other UEs. Summary of the Invention

[0005] According to some embodiments of this disclosure, a method for wireless communication performed by a first UE may include: receiving a sidelink transmission including a first indication, the first indication indicating whether a second UE has the capability to provide auxiliary information for resource selection; and in response to the first indication indicating that the second UE has the capability to provide the auxiliary information, transmitting a request for the auxiliary information on one or more feedback resources associated with the sidelink transmission.

[0006] In embodiments of this disclosure, the first indication may be a bit in the side link control information (SCI) format of the side link transmission.

[0007] In embodiments of this disclosure, the one or more feedback resources may have at least one of (1) a predefined or preconfigured frequency domain offset or (2) a predefined or preconfigured time domain offset for feedback resources relating to Hybrid Automatic Repeat Request (HARQ) Acknowledgment / Negative Acknowledgment (ACK / NACK) information associated with the sidelink transmission. In another embodiment of this disclosure, the one or more feedback resources may be one or more feedback resources for HARQ ACK / NACK information associated with the sidelink transmission.

[0008] In embodiments of this disclosure, the one or more feedback resources may correspond to the service priority or packet size of the first UE.

[0009] In embodiments of this disclosure, the sidelink transmission may further include a second indication indicating one or more reserved resources. The method may further include receiving the auxiliary information on at least one of the one or more reserved resources in response to the request. The method may further include receiving a third indication indicating transmission of the auxiliary information on the at least one reserved resource. The third indication may be a bit in an SCI format. In embodiments of this disclosure, the auxiliary information may be received in a predefined or preconfigured portion of the at least one reserved resource.

[0010] According to some embodiments of this disclosure, a method for wireless communication performed by a first UE may include: receiving a sidelink transmission containing auxiliary information for resource selection, wherein the sidelink transmission may further include an indication to transmit the auxiliary information in the sidelink transmission.

[0011] In embodiments of this disclosure, the indication may be a bit in the SCI format of the sidelink transmission. The auxiliary information may be received in a predefined or pre-configured portion of the sidelink transmission.

[0012] According to some embodiments of this disclosure, a method for wireless communication performed by a second UE may include: transmitting a sidelink transmission including a first indication, the first indication indicating whether the second UE has the capability to provide auxiliary information for resource selection; and in response to the first indication indicating that the second UE has the capability to provide the auxiliary information, receiving a request for the auxiliary information from a first UE on one or more feedback resources associated with the sidelink transmission.

[0013] In embodiments of this disclosure, the first indication may be a bit in the side link control information (SCI) format of the side link transmission.

[0014] In embodiments of this disclosure, the one or more feedback resources may have at least one of (1) a predefined or preconfigured frequency domain offset or (2) a predefined or preconfigured time domain offset for feedback resources relating to HARQ ACK / NACK information associated with the sidelink transmission. In another embodiment of this disclosure, the one or more feedback resources may be one or more feedback resources for HARQ ACK / NACK information associated with the sidelink transmission.

[0015] In embodiments of this disclosure, the one or more feedback resources may correspond to the service priority or packet size of the first UE.

[0016] In embodiments of this disclosure, the sidelink transmission may further include a second indication indicating one or more reserved resources. The method may further include, in response to the request, transmitting the auxiliary information on at least one of the one or more reserved resources. The method may further include transmitting a third indication indicating the transmission of the auxiliary information on the at least one reserved resource. The third indication may be a bit in an SCI format. In embodiments of this disclosure, the auxiliary information may be transmitted in a predefined or preconfigured portion of the at least one reserved resource.

[0017] According to some embodiments of this disclosure, a method for wireless communication performed by a second UE may include: transmitting a sidelink transmission containing auxiliary information for resource selection, wherein the sidelink transmission may further include an indication to transmit the auxiliary information in the sidelink transmission.

[0018] In embodiments of this disclosure, the indication may be a bit in the SCI format of the sidelink transmission. The auxiliary information may be transmitted in a predefined or pre-configured portion of the sidelink transmission.

[0019] According to other embodiments of this disclosure, an exemplary device may include: at least one non-transitory computer-readable medium having computer-executable instructions stored thereon; at least one receiving circuitry system; at least one transmitting circuitry system; and at least one processor coupled to the at least one non-transitory computer-readable medium, the at least one receiving circuitry system, and the at least one transmitting circuitry system. The computer-executable instructions may cause the at least one processor to perform a method according to any embodiment of this disclosure.

[0020] Details of one or more examples are set forth in the accompanying drawings and the description below. Other features, objects, and advantages will be apparent from the description and drawings and from the claims. Attached Figure Description

[0021] To illustrate how the advantages and features of this disclosure can be obtained, the description of this disclosure is presented with reference to specific embodiments of the disclosure illustrated in the accompanying drawings. These drawings depict only exemplary embodiments of the disclosure and are therefore not intended to limit the scope of the disclosure.

[0022] Figure 1 A schematic diagram illustrating an exemplary wireless communication system according to some embodiments of the present disclosure;

[0023] Figure 2 Explain the timeline of the exemplary normal sensing and resource selection procedure;

[0024] Figure 3A timeline illustrating an exemplary sensing and resource selection procedure for configuring a UE with discontinuous reception (DRX) disconnection duration according to some embodiments of this disclosure;

[0025] Figure 4 A flowchart illustrating an exemplary method for assisting information transmission according to some embodiments of the present disclosure;

[0026] Figure 5 Exemplary block diagrams illustrating devices according to some embodiments of the present disclosure; and

[0027] Figure 6 An exemplary block diagram illustrating another device according to some embodiments of the present disclosure. Detailed Implementation

[0028] The detailed description of the accompanying drawings is intended to describe the presently preferred embodiments of this disclosure and is not intended to represent the only form in which this disclosure may be practiced. It should be understood that the same or equivalent functionality may be achieved through different embodiments that are intended to be covered within the spirit and scope of this disclosure.

[0029] In the following description, numerous specific details, such as examples of programming, software modules, network transactions, database structures, hardware modules, hardware circuits, etc., are provided to provide a thorough understanding of the embodiments. However, those skilled in the art will recognize that the embodiments can be practiced without one or more of the specific details, or with other methods, components, materials, etc. In other instances, well-known structures, materials, or operations have not been shown or described in detail to avoid obscuring aspects of the embodiments.

[0030] Reference will now be made in detail to some embodiments of this disclosure, examples of which are illustrated in the accompanying drawings. To facilitate understanding, embodiments are provided under specific network architectures and new service scenarios (e.g., 3GPP 5G, 3GPP Long Term Evolution (LTE), etc.). Those skilled in the art will readily recognize that all embodiments of this disclosure are applicable to similar technical problems as network architectures and new service scenarios evolve; furthermore, the terminology listed in this disclosure may be changed without affecting the principles of this disclosure.

[0031] Figure 1 A schematic diagram illustrating an exemplary wireless communication system 100 according to some embodiments of the present disclosure.

[0032] As in Figure 1 As shown, the wireless communication system 100 may include at least one BS, such as BS 120, and at least one UE 110, such as UE 110a, UE 110b, and UE 110c. Although Figure 1The diagram depicts a specific number of UEs 110 and one BS 120, but it is conceivable that the wireless communication system 100 may also include more BSs and more or fewer UEs outside the coverage area of ​​the BSs.

[0033] The wireless communication system 100 is compatible with any type of network capable of transmitting and receiving wireless communication signals. For example, the wireless communication system 100 is compatible with wireless communication networks, cellular telephone networks, time division multiple access (TDMA) based networks, code division multiple access (CDMA) based networks, orthogonal frequency division multiple access (OFDMA) based networks, LTE networks, 3GPP based networks, 3GPP 5G networks, satellite communication networks, high-altitude platform networks, and / or other communication networks.

[0034] UE 110 and BS 120 may support communication based on, for example, 3G, LTE, LTE-A Advanced, NR, or other suitable protocols. In some embodiments of this disclosure, BS 120 may also be referred to as an access point, access terminal, base station, macro cell, Node B, Enhanced Node B (eNB), gNB, Home Node B, relay node, or device, or described using other terms used in the art. UE 110a, UE 110b, or UE 110c may include, for example (but not limited to), computing devices, wearable devices, mobile devices, IoT (Internet of Things) devices, vehicles, etc. Furthermore, UE 110a, UE 110b, or UE 110c may be referred to as a subscriber unit, mobile phone, mobile station, user, terminal, mobile terminal, wireless terminal, subscriber station, user terminal, or device, or described using other terms used in the art. Those skilled in the art should understand that the terminology described in this disclosure may change as technology develops and advances, but this should not affect or limit the principles and spirit of this disclosure.

[0035] BS 120 can define one or more cells, and each cell can have a coverage area 130. In the exemplary wireless communication system 100, some UEs (e.g., UE 110a and UE 110b) are within the coverage area of ​​BS 120, and BS 120 may not be required to define a coverage area. Figure 1The specific BS 120 shown may be any of the BS 120s in a wireless communication system, and some UEs (e.g., UE 110c) may be outside the coverage area of ​​the BS 120. For example, in the case where the wireless communication system includes two BS 120s, UE 110 being within the coverage area of ​​either of the two BS 120s means that UE 110 is within the coverage area of ​​the BS 120 in the wireless communication system (i.e., within the coverage area); and UE 110 being outside the coverage area of ​​either BS 120 means that UE 110 is outside the coverage area of ​​the BS 120 in the wireless communication system (i.e., outside the coverage area).

[0036] Still referencing Figure 1 UE 110a and UE 110b can be connected via, for example, a Uu link (from... Figure 1 (Indicated by the dashed arrow in the image) communicates with BS 120. UE 110a, UE 110b, and UE 110c can communicate via a side link (from...). Figure 1 The solid arrows in the diagram indicate that UEs can communicate with each other (e.g., UE 110a can communicate with UE 110b, or UE 110a can communicate with UE 110c) and can form UE groups. During sidelink communication, a transmitting UE (hereinafter referred to as "Tx UE") can transmit signaling, data, or both to a receiving UE (hereinafter referred to as "Rx UE"). For example, refer to... Figure 1 A Tx UE (e.g., UE 110a) can transmit data to an Rx UE (e.g., UE 110b or UE 110c).

[0037] There are two resource allocation modes for sidelink transmission. In Mode 1, sidelink resources are assigned by the network (e.g., by the BS) via dynamic scheduling or configuration authorization. In Mode 2, the Tx UE selects sidelink resources from a configured or pre-configured resource pool itself. For either Mode 1 or Mode 2, after determining the sidelink resources to be used or reserved, the Tx UE may transmit Sidelink Control Information (SCI) on the Physical Sidelink Control Channel (PSCCH), which indicates the time-frequency resources on the Physical Sidelink Shared Channel (PSSCH) in which the Tx UE transmits. These SCI transmissions can be detected and used by the sensing UE to maintain a record of which resources other UEs have recently used or reserved, allowing the sensing UE to avoid using the sidelink resources indicated by the SCI, which the sensing UE can treat as unavailable resources to avoid collisions or interference.

[0038] Tx UEs operating in Mode 2 (also known as “Mode 2 UEs”) typically perform sensing and resource selection procedures before performing sidelink transmissions to Rx UEs. Figure 2This illustrates the timeline of exemplary normal sensing and resource selection procedures.

[0039] In such Figure 2 As shown, when a Mode 2 UE triggers resource selection (e.g., by traffic arrival or reselection trigger), the Mode 2 UE may consider a sensing window T0, which begins at a past configuration or pre-configuration time and ends shortly before the trigger time Tr (e.g., the first processing cycle T1). The Mode 2 UE can detect SCI transmissions by surrounding UEs in the time slots of the sensing window. The Mode 2 UE can process the sensing results obtained in the sensing window in the first processing cycle T1. The sensing window can be 1100 ms or 100 ms wide, with the intention that the 100 ms option is specifically for non-periodic traffic and the 1100 ms option is specifically for periodic traffic. The Mode 2 UE can also measure the Side Link (SL) Reference Signal Received Power (RSRP) in the time slots of the sensing window. The SL-RSRP can indicate the level of interference that will be caused and experienced when the Mode 2 UE performs a transmission in the time slot. In NR vehicle-to-everything (V2X) communication, SL-RSRP is a configurable or pre-configured measurement of PSSCH-RSRP or PSCCH-RSRP.

[0040] Next, the Mode 2 UE can select resources for its transmission or retransmission from within the resource selection window T3. Selection window T3 begins shortly after the trigger time Tr (e.g., the second processing cycle T2), and T2+T3 cannot be longer than the remaining delay budget of the packet to be transmitted. In the second processing cycle T2, the Mode 2 UE can perform any necessary processing that should be performed before sidelink transmission, including determining the length of selection window T3. The Mode 2 UE can autonomously select time-frequency resources within selection window T3 and perform sidelink transmission or retransmission using the selected resources (e.g., resources 200, 201, and 202). Resources reserved in the selection window for other UEs (e.g., indicated by SCI detected in the sensing window) and having an SL-RSRP higher than a threshold can be excluded from the candidates to be selected by the Mode 2 UE. The threshold can be set based on the priority of the Mode 2 UE's traffic and the traffic of other UEs. Therefore, higher-priority transmissions from the Mode 2 UE can occupy resources reserved by other UEs with sufficiently low SL-RSRP and sufficiently low-priority traffic.

[0041] exist Figure 2 In the example shown, the Mode 2 UE can choose to transmit the SCI format and its associated data on resource 200. Additionally, the SCI format can indicate resources reserved for the Mode 2 UE (e.g., resources 201 and 202) (e.g., for retransmission). It should be understood that... Figure 2The durations of T0, T1, T2, and T3, as well as the locations of resources 200, 201, and 202 shown are for illustrative purposes only and should not be construed as limiting the embodiments of this disclosure.

[0042] The SCI format and its associated data may be associated with one or more Physical Sidelink Feedback Channel (PSFCH) resources, which may be implicitly indicated by the SCI format, such as as specified in, for example, 3GPP standard document TS 38.213. In response to the reception of the SCI format and its associated data, the Rx UE may transmit Hybrid Automatic Repeat Request (HARQ) Acknowledgment / Negative Acknowledgment (ACK / NACK) messages on one or more PSFCH resources. The HARQ-ACK / NACK messages may contain either ACK or NACK. Alternatively, the HARQ-ACK / NACK messages may contain only NACK.

[0043] A UE (e.g., a pedestrian UE (P-UE), such as a mobile phone) can be configured with a sidelink discontinuous reception (DRX) disconnect duration to save power. During the DRX disconnect duration, the UE enters sleep mode and does not perform sidelink transmission or reception.

[0044] Figure 3 This document describes a timeline of exemplary sensing and resource selection procedures for a UE configured with a sidelink DRX disconnection duration, according to some embodiments of this disclosure.

[0045] exist Figure 3 In the example shown, the UE's resource selection (e.g., via service arrival or reselection trigger) is triggered at trigger time Tr, and the UE is in a configured sidelink DRX disconnected duration at or shortly before trigger time Tr. Therefore, the UE cannot... Figure 2 The normal sensing procedure described herein performs sensing in the time slot preceding the trigger time Tr. Instead, the UE can perform sensing in a sensing window T0' starting from the trigger time Tr, and then autonomously select time-frequency resources within a selection window T3'. Due to limitations in the remaining delay budget of the packets to be transmitted, the sensing window T0' and / or selection window T3' can be performed more efficiently than in the normal sensing procedure described above. Figure 2 The shorter sensing and resource selection procedures described are used in the normal sensing and resource selection process. Therefore, some reserved resources (e.g., periodically reserved resources) may not be detected in the shorter sensing window T0', which could lead to more collisions and degrade transmission performance.

[0046] The aforementioned problems can be solved by obtaining auxiliary information (including, but not limited to, sensing results obtained before the trigger time Tr) from other UEs that may have the capability to provide auxiliary information. According to some embodiments of this disclosure, a UE capable of providing auxiliary information may automatically transmit auxiliary information to another UE, or upon request from another UE that does not perform sensing before triggering resource selection or needs auxiliary information for resource selection (e.g., to avoid hidden nodes or half-duplex issues).

[0047] Figure 4 A flowchart illustrating an exemplary method for assisting information transmission according to some embodiments of the present disclosure is provided. The method can be performed by UE-A and UE-B. UE-A and UE-B can be any UE described herein (e.g., Figure 1 (UE110a, 110b, or 110c in the example). For instance, UE-A and UE-B can operate in Mode 2. UE-A may be a UE that does not perform sensing before resource selection is triggered or requires auxiliary information for resource selection (e.g., to avoid hidden nodes or half-duplex issues). UE-B may be a UE that has the ability to provide auxiliary information (including, but not limited to, sensing results obtained in normal sensing procedures) to other UEs.

[0048] As in Figure 4 As shown in the diagram, at step 402, UE-B may transmit a sidelink transmission containing a first indication, which indicates whether UE-B has the capability to provide auxiliary information for resource selection. Although in Figure 4 Not shown, but UE-B may perform a normal sensing procedure prior to step 402, and the auxiliary information may include (but is not limited to) the sensing results obtained in the normal sensing procedure. In some embodiments of this disclosure, the sidelink transmission may include both control information (e.g., SCI format) and associated data. In some other embodiments of this disclosure, the sidelink transmission may include only control information. In the sidelink transmission, the first indication may be a bit in SCI format. For example, the SCI format may have a one-bit field, where a value of '1' in this field may indicate that UE-B can provide auxiliary information, and a value of '0' in this field may indicate that UE-B cannot provide auxiliary information.

[0049] UE-A can receive a sidelink transmission containing a first indication from UE-B. In embodiments of this disclosure, the sidelink transmission may be directed to one or more UEs including UE-A. In another embodiment of this disclosure, the sidelink transmission may be directed to one or more UEs other than UE-A, but is detected by UE-A during a sensing procedure. When resource selection is triggered by UE-A, the sensing procedure may begin from a certain time slot.

[0050] In response to receiving a first indication that UE-B has the capability to provide auxiliary information, when UE-A requires auxiliary information for resource selection, UE-A may transmit a request for auxiliary information to UE-B (step 404). According to some embodiments of this disclosure, the request may be transmitted on one or more feedback resources associated with the sidelink transmission received at step 402.

[0051] As described above, a sidelink transmission may have associated feedback resources, which may be implicitly indicated by the SCI format in the sidelink transmission, such as specified in, for example, 3GPP standard document TS 38.213. When the sidelink transmission is a unicast or multicast transmission, HARQ-ACK / NACK information received in response to the sidelink transmission may be transmitted on the associated feedback resources. According to some embodiments of this disclosure, one or more feedback resources for transmitting a request for auxiliary information may be allocated to have at least one of (1) a predefined or preconfigured frequency domain offset or (2) a predefined or preconfigured time domain offset for the associated feedback resources with respect to HARQ-ACK / NACK information. As a non-limiting example, when the first associated feedback resource for HARQ-ACK / NACK information is a physical resource block (PRB) in symbol i and sub-channel j, the PRB in symbol i-1 and sub-channel j, the PRB in symbol i and sub-channel j-1, or the PRB in symbol i-1 and sub-channel j-1 may be allocated to transmit a request for auxiliary information. As another non-limiting example, when the last associated feedback resource of the HARQ-ACK / NACK message is a physical resource block (PRB) in symbol i and sub-channel j, the PRB in symbol i+1 and sub-channel j, the PRB in symbol i and sub-channel j+1, or the PRB in symbol i+1 and sub-channel j+1 can be allocated to transmit a request for auxiliary information.

[0052] According to some embodiments of this disclosure, one or more feedback resources for transmitting a request for auxiliary information may be the same as the associated feedback resources for HARQ-ACK / NACK information. For example, when the sidelink transmission is a broadcast transmission, it is not necessary to transmit HARQ-ACK / NACK information, and therefore the associated feedback resources for HARQ-ACK / NACK information can be used to transmit a request for auxiliary information.

[0053] According to some embodiments of this disclosure, different feedback resources can be allocated to UEs with different service priorities or different packet sizes (i.e., the number of sub-channels). That is, one or more feedback resources used by UE-A to transmit a request for auxiliary information can correspond to the service priority or packet size of UE-A. For example, a first feedback resource can be used by a UE (having a first service priority) to request auxiliary information corresponding to a service priority higher than the first service priority, a second feedback resource can be used by a UE (having a second service priority) to request auxiliary information corresponding to a service priority higher than the second service priority, and so on. When UE-B receives a request for auxiliary information from a specific UE-A on a specific feedback resource, it can determine the service priority or packet size of the specific UE-A and provide the corresponding auxiliary information.

[0054] As in Figure 4 As shown, at step 406, UE-B may transmit auxiliary information to UE-A in response to receiving a request from UE-A. According to some embodiments of this disclosure, the sidelink transmission transmitted at step 402 may include a second indication (e.g., included in an SCI format) indicating reserved resources (e.g., for retransmission), and the auxiliary information may be transmitted on at least one of the reserved resources.

[0055] To indicate which reserved resources are used to transmit auxiliary information, a third indication may be introduced and transmitted to the UE-A. In embodiments of this disclosure, the third indication may be a bit of an SCI format. For example, the SCI format may have a bit field where a value of '1' indicates that the auxiliary information is transmitted on PSSCH resources scheduled by the SCI format, and a value of '0' indicates that the auxiliary information is not transmitted on PSSCH resources scheduled by the SCI format. According to some embodiments of this disclosure, a predefined or pre-configured portion of at least one reserved resource may be punched to transmit auxiliary information. For example, auxiliary information may be transmitted in a second-level SCI area or a data area (e.g., the last symbol of a data area).

[0056] If the sidelink transmission at step 402 only contains control information, all reserved resources can be used to transmit auxiliary information. Therefore, the third indication associated with each of the reserved resources can be set to indicate that auxiliary information is transmitted on the associated reserved resource. Alternatively, in this case, the third indication can be omitted.

[0057] After receiving auxiliary information from UE-B, UE-A can perform resource selection by taking into account the auxiliary information from UE-B.

[0058] According to some embodiments of this disclosure, UE-B can transmit auxiliary information without receiving a request from UE-A. Furthermore, UE-B may not need to transmit a first indication to indicate its ability to provide auxiliary information. For example, when UE-B transmits a sidelink transmission in a multicast or broadcast manner, it can provide auxiliary information from its perspective in the sidelink transmission. The sidelink transmission may further include an indication to transmit auxiliary information in the sidelink transmission. In embodiments of this disclosure, in the sidelink transmission, the indication may be a bit in an SCI format. For example, the SCI format may have a one-bit field, where a value '1' in this field indicates that auxiliary information is transmitted in the sidelink transmission, and a value '0' in this field indicates that no auxiliary information is transmitted in the sidelink transmission. According to some embodiments of this disclosure, a predefined or pre-configured portion of the sidelink transmission may be punched to transmit auxiliary information. For example, auxiliary information may be transmitted in a second-level SCI area or a data area (e.g., the last symbol of a data area). The auxiliary information included in the sidelink transmission can be used by a UE that receives the sidelink transmission and needs auxiliary information for resource selection (e.g., a UE that intends to transmit data without sufficient sensing time) (e.g., UE-A).

[0059] Figure 5 This illustration shows exemplary block diagrams of a device 500 according to some embodiments of the present disclosure. In some embodiments of the present disclosure, the device 500 may be or include a first UE (e.g., Figure 4 The device 500 may be configured to perform UE-A (or other devices with similar functionality). In some embodiments, the device 500 may be configured to perform UE-A (or other devices with similar functionality). Figure 4 The method described in the document.

[0060] As in Figure 5 As shown, device 500 may include at least one receiving circuitry system 502, at least one transmitting circuitry system 504, at least one non-transitory computer-readable medium 506, and at least one processor 508 coupled to at least one receiving circuitry system 502, at least one transmitting circuitry system 504, and at least one non-transitory computer-readable medium 506. Although in Figure 5 In the example shown, they are coupled to each other via at least one processor 508, but at least one receiving circuitry system 502, at least one transmitting circuitry system 504, at least one non-transitory computer-readable medium 506, and at least one processor 508 may be coupled to each other in various arrangements. For example, at least one receiving circuitry system 502, at least one transmitting circuitry system 504, at least one non-transitory computer-readable medium 506, and at least one processor 508 may be coupled to each other via one or more local buses (not shown for simplicity).

[0061] Despite Figure 5In this disclosure, elements such as receiving circuitry system 502, transmitting circuitry system 504, non-transitory computer-readable medium 506, and processor 508 are described in the singular, but the plural form may be considered unless explicitly stated to be limited to the singular. In some embodiments of this disclosure, at least one receiving circuitry system 502 and at least one transmitting circuitry system 504 may be combined into a single device, such as a transceiver. In some embodiments of this disclosure, device 500 may further include input devices, memory, and / or other components.

[0062] In some embodiments of this disclosure, at least one non-transitory computer-readable medium 506 may store computer-executable instructions thereon, which may be programmed to cause at least one processor 508 to implement, for example, as described in [the following text is missing from the original] using at least one receiving circuit system 502 and at least one transmitting circuit system 504. Figure 4 The steps of a method according to an embodiment of this disclosure are described in the view. For example, when executed, the instructions may cause at least one processor 508 to receive a sidelink transmission containing a first indication using at least one receiver circuitry 502, the first indication indicating a second UE (e.g., Figure 4 The instruction may further cause at least one processor 508 to transmit a request for assistance information on one or more feedback resources associated with a sidelink transmission using at least one transmit circuitry 504 in response to a first indication indicating that the second UE has the capability to provide assistance information. As another example, when executed, the instruction may cause at least one processor 508 to receive a sidelink transmission containing assistance information for resource selection using at least one receive circuitry 502, wherein the sidelink transmission may further include an indication to transmit assistance information in the sidelink transmission.

[0063] Figure 6 This illustration shows exemplary block diagrams of a device 600 according to some embodiments of the present disclosure. In some embodiments of the present disclosure, the device 600 may be or include a second UE (e.g., Figure 4 The device 600 may be configured to perform UE-B (or other devices with similar functionality). In some embodiments, the device 600 may be configured to perform UE-B (or other devices with similar functionality). Figure 4 The method described in the document.

[0064] As in Figure 6 As shown, device 600 may include at least one receiving circuitry system 602, at least one transmitting circuitry system 604, at least one non-transitory computer-readable medium 606, and at least one processor 608 coupled to at least one receiving circuitry system 602, at least one transmitting circuitry system 604, and at least one non-transitory computer-readable medium 606. Although in Figure 6In the example shown, they are coupled to each other via at least one processor 608, but at least one receiving circuitry system 602, at least one transmitting circuitry system 604, at least one non-transitory computer-readable medium 606, and at least one processor 608 may be coupled to each other in various arrangements. For example, at least one receiving circuitry system 602, at least one transmitting circuitry system 604, at least one non-transitory computer-readable medium 606, and at least one processor 608 may be coupled to each other via one or more local buses (not shown for simplicity).

[0065] Despite Figure 6 In this disclosure, elements such as receiving circuitry system 602, transmitting circuitry system 604, non-transitory computer-readable medium 606, and processor 608 are described in the singular, but the plural form may be considered unless explicitly stated to be limited to the singular. In some embodiments of this disclosure, at least one receiving circuitry system 602 and at least one transmitting circuitry system 604 may be combined into a single device, such as a transceiver. In some embodiments of this disclosure, device 600 may further include input devices, memory, and / or other components.

[0066] In some embodiments of this disclosure, at least one non-transitory computer-readable medium 606 may store computer-executable instructions thereon, which may be programmed to cause at least one processor 608 to implement, for example, as described in [the following text is missing from the original] using at least one receiving circuit system 602 and at least one transmitting circuit system 604. Figure 4 The steps of a method according to an embodiment of this disclosure are described in the view. For example, when executed, the instructions may cause at least one processor 608 to transmit a sidelink transmission containing a first indication using at least one transmit circuitry system 604, the first indication indicating whether a second UE has the capability to provide auxiliary information for resource selection. The instructions may further cause at least one processor 608 to, in response to the first indication indicating that the second UE has the capability to provide auxiliary information, use at least one receive circuitry system 602 to receive data from the first UE (e.g., ...) on one or more feedback resources associated with the sidelink transmission. Figure 4 The UE-A in the system receives a request for auxiliary information. As another example, when executed, the instructions may cause at least one processor 608 to transmit a sidelink transmission containing auxiliary information for resource selection using at least one transmit circuit system 604, wherein the sidelink transmission may further include an indication to transmit the auxiliary information in the sidelink transmission.

[0067] As those skilled in the art will understand, aspects of the embodiments may be embodied as systems, devices, methods, or program products. Therefore, embodiments may take the form of entirely hardware embodiments, entirely software embodiments (including firmware, resident software, microcode, etc.), or embodiments combining software and hardware aspects.

[0068] For example, the disclosed embodiments may be implemented as hardware circuitry, including custom very large-scale integration (VLSI) circuitry or gate arrays, off-the-shelf semiconductors such as logic chips, transistors, or other discrete components. The disclosed embodiments may also be implemented in programmable hardware devices, such as field-programmable gate arrays, programmable array logic, programmable logic devices, or the like. As another example, the disclosed embodiments may include one or more physical or logical blocks of executable code that can be organized, for example, as objects, programs, or functions.

[0069] Furthermore, embodiments may take the form of a program product embodied in one or more computer-readable storage devices storing machine-readable code, computer-readable code, or program code. The storage device may be tangible, non-transitory, or non-transferable. The storage device may not embody signals. In some embodiments, the storage device employs only signals for accessing code.

[0070] Any combination of one or more computer-readable media may be used. The computer-readable media may be a computer-readable storage medium. The computer-readable storage medium may be a storage device for storing code. For example, the storage device may be (but is not limited to) an electronic, magnetic, optical, electromagnetic, infrared, holographic, micromechanical, or semiconductor system, device, or apparatus, or any suitable combination thereof.

[0071] A non-exhaustive list of more specific examples of storage devices may include the following: electrical connections having one or more wires, portable computer disks, hard disks, random access memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM or flash memory), portable optical disc read-only memory (CD-ROM), optical storage devices, magnetic storage devices, or any suitable combination of the foregoing. In the context of this document, computer-readable storage media may be any tangible medium containing or storing programs for use by or in connection with an instruction execution system, device, or apparatus.

[0072] Furthermore, the features, structures, or characteristics described in the embodiments can be combined in any suitable manner. Although this disclosure has been described with reference to specific embodiments thereof, it will be apparent to those skilled in the art that many alternatives, modifications, and variations will be readily apparent. For example, in other embodiments, various components of the embodiments may be interchanged, added, or substituted. Moreover, not all elements of each drawing are essential for the operation of the disclosed embodiments. For instance, those skilled in the art will be able to make and use the teachings of this disclosure by simply employing the elements of the independent claims. Therefore, the embodiments of this disclosure set forth herein are intended to be illustrative rather than restrictive. Various changes may be made without departing from the spirit and scope of this disclosure.

[0073] In this specification, references to “an embodiment,” “embodiment,” or similar language indicate that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment. Therefore, unless expressly stated otherwise, the phrases “in an embodiment,” “in an embodiment,” and similar language throughout this specification may (but not necessarily) refer to the same embodiment, but rather to “one or more, but not all, embodiments.” In this document, the term “comprising,” or any other variations thereof, is intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only said elements but also other elements not expressly listed or inherent to the process, method, article, or apparatus. Without further constraints, an element beginning with “a” or similar does not exclude the presence of additional equivalent elements in a process, method, article, or apparatus that includes said element. Furthermore, the term “another” is defined as at least a second or more. The terms “having” and similar as used herein are defined as “comprising.”

Claims

1. An apparatus comprising: Receiver circuit system; Transmitting circuitry system; and A processor coupled to the receiving circuit system and the transmitting circuit system, the processor being configured to enable the device to: Receive sidelink transmissions including auxiliary information from the second user equipment (UE); and Resource selection is performed based on the aforementioned auxiliary information.

2. The device of claim 1, wherein the processor is configured to transmit a request for the auxiliary information prior to receiving the sidelink transmission including the auxiliary information.

3. The device of claim 1, wherein the sidelink transmission includes an indication in the sidelink control information (SCI) format to indicate that the auxiliary information is transmitted in the sidelink transmission.

4. The device according to claim 3, wherein the auxiliary information is transmitted in the second level of the SCI format or in the data area.

5. An apparatus comprising: Receiver circuit system; Transmitting circuitry system; and A processor coupled to the receiving circuit system and the transmitting circuit system, the processor being configured to enable the device to: Transmit a sidelink transmission, including auxiliary information, to the first user equipment (UE); The sidelink transmission may be in response to a request for the auxiliary information from the first UE, or it may not be in response to a request for the auxiliary information from the first UE.

6. The device of claim 5, wherein the auxiliary information is transmitted in a unicast, multicast, or broadcast manner.

7. The device of claim 5, wherein the sidelink transmission includes an indication in the sidelink control information (SCI) format to indicate that the auxiliary information is transmitted in the sidelink transmission.

8. The device according to claim 7, wherein the auxiliary information is transmitted in the second level of the SCI format or in the data area.

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