Sidelink communication feedback

Abstract

The objective of this invention is to provide feedback for sidelink communication. [Solution] Various aspects of this disclosure generally relate to wireless communications. In some aspects, a user device (UE) may receive sidelink communications on a sidelink between one UE and another UE. The UE may transmit one or more feedback communications associated with the sidelink communications on the sidelink within a reporting period having a configurable period and / or configured to occupy the entire bandwidth of a resource pool configured for the sidelink. Numerous other aspects are provided.

Description

Technical Field

[0001] Cross - Reference to Related Applications This application claims priority to U.S. Provisional Patent Application No. 62 / 790,823, filed Jan. 10, 2019, and U.S. Non - Provisional Patent Application No. 16 / 736,702, filed Jan. 7, 2020, both entitled "FEEDBACK FOR SIDELINK COMMUNICATIONS," which are hereby incorporated by reference in their entirety.

[0002] Aspects of the present disclosure generally relate to wireless communications, and more particularly, to techniques and apparatus for sidelink communications.

Background Art

[0003] Wireless communication systems are widely deployed to provide various telecommunication services such as telephony, video, data, messaging, and broadcast. A typical wireless communication system may utilize a multiple - access technology capable of supporting communication with multiple users by sharing available system resources (e.g., bandwidth, transmit power, etc.). Examples of such multiple - access technologies include Code Division Multiple Access (CDMA) systems, Time Division Multiple Access (TDMA) systems, Frequency Division Multiple Access (FDMA) systems, Orthogonal Frequency Division Multiple Access (OFDMA) systems, Single - Carrier Frequency Division Multiple Access (SC - FDMA) systems, Time Division Synchronous Code Division Multiple Access (TD - SCDMA) systems, and Long Term Evolution (LTE). LTE / LTE - Advanced is a set of enhancements to the Universal Mobile Telecommunications System (UMTS) mobile standards published by the Third Generation Partnership Project (3GPP®).

[0004] A wireless communication network may include several base stations (BS) that can support communication for several user devices (UEs). User devices (UEs) may communicate with base stations (BS) via downlink and uplink. Downlink (or forward link) refers to the communication link from the BS to the UE, and uplink (or reverse link) refers to the communication link from the UE to the BS. As will be described in more detail herein, BS may be called Node B, gNB, access point (AP), radiohead, transmit / receive point (TRP), New Radio (NR) BS, 5G Node B, etc.

[0005] The multiple access technologies described above have been adopted in various telecommunications standards to provide a common protocol that enables various user devices to communicate at the city, national, regional, and global levels. New Radio (NR), sometimes also known as 5G, is a set of extensions to the LTE mobile standard published by the Third Generation Partnership Project (3GPP®). NR is designed to better support mobile broadband internet access by increasing spectral efficiency, reducing costs, improving service, utilizing new spectra, using orthogonal frequency division multiplexing (OFDM) with cyclic prefixes (CP) (CP-OFDM) on the downlink (DL), and using CP-OFDM and / or SC-FDM (also known as Discrete Fourier Transform Spread-of-Fiber (DFT-s-OFDM)) on the uplink (UL) to better harmonize with other open standards, as well as supporting beamforming, multi-input multiple-output (MIMO) antenna technology, and carrier aggregation. However, as the demand for mobile broadband access continues to grow, further improvements to LTE and NR technologies are needed. Preferably, these improvements should be applicable to other multiple access technologies and telecommunications standards that utilize these technologies. [Overview of the Initiative] [Means for solving the problem]

[0006] In some embodiments, a method of wireless communication performed by a user device (UE) may include the step of receiving sidelink communication over a sidelink between one UE and another UE. This method may include the step of transmitting one or more feedback communications associated with the sidelink communication over the sidelink within a reporting period having a configurable period.

[0007] In some embodiments, a UE for wireless communication may include memory and one or more processors coupled to the memory. The memory and one or more processors may be configured to receive sidelink communications on a sidelink between one UE and another UE. The memory and one or more processors may be configured to transmit one or more feedback communications associated with the sidelink communications on the sidelink within a reporting period having a configurable period.

[0008] In some embodiments, a non-temporary computer-readable medium may store one or more instructions for wireless communication. When one or more instructions are executed by one or more processors of a UE, one or more processors may cause one or more processors to receive sidelink communication over a sidelink between one UE and another UE. When one or more instructions are executed by one or more processors of a UE, one or more processors may cause one or more processors to transmit one or more feedback communications associated with the sidelink communication over the sidelink within a reporting period having a configurable period.

[0009] In some embodiments, a device for wireless communication may include means for receiving sidelink communications on a sidelink between one device and another device. The device may also include means for transmitting one or more feedback communications associated with the sidelink communications on the sidelink within a reporting period having a configurable period.

[0010] In some embodiments, a method of wireless communication performed by a UE may include the step of receiving sidelink communication on a sidelink between one UE and another UE. This method may include the step of transmitting one or more feedback communications associated with the sidelink communication on the sidelink within a reporting period configured to occupy the entire bandwidth of the resource pool configured for the sidelink.

[0011] In some embodiments, a UE for wireless communication may include memory and one or more processors coupled to the memory. The memory and one or more processors may be configured to receive sidelink communications on a sidelink between one UE and another UE. The memory and one or more processors may be configured to transmit one or more feedback communications associated with the sidelink communications on the sidelink within a reporting period configured to occupy the entire bandwidth of a resource pool configured for the sidelink.

[0012] In some embodiments, a non-temporary computer-readable medium may store one or more instructions for wireless communication. When one or more instructions are executed by one or more processors of a UE, one or more processors may cause one or more processors to receive sidelink communication on a sidelink between one UE and another UE. When one or more instructions are executed by one or more processors of a UE, one or more processors may cause one or more processors to transmit one or more feedback communications associated with the sidelink communication on the sidelink within a reporting period configured to occupy the entire bandwidth of the resource pool configured for the sidelink.

[0013] In some embodiments, a device for wireless communication may include means for receiving sidelink communications on a sidelink between one device and another device. The device may also include means for transmitting one or more feedback communications associated with the sidelink communications on the sidelink within a reporting period configured to occupy the entire bandwidth of a resource pool configured for the sidelink.

[0014] In some embodiments, a method of wireless communication performed by a UE may include the step of transmitting a sidelink communication over a sidelink between one UE and another UE. This method may include the step of receiving one or more feedback communications associated with the sidelink communication over the sidelink within a reporting period having a configurable period.

[0015] In some embodiments, a UE for wireless communication may include memory and one or more processors coupled to the memory. The memory and one or more processors may be configured to transmit sidelink communications over a sidelink between one UE and another UE. The memory and one or more processors may be configured to receive one or more feedback communications associated with the sidelink communications over the sidelink within a reporting period having a configurable period.

[0016] In some embodiments, a non-temporary computer-readable medium may store one or more instructions for wireless communication. When one or more instructions are executed by one or more processors of a UE, one or more processors may cause one or more processors to transmit sidelink communication over a sidelink between one UE and another UE. When one or more instructions are executed by one or more processors of a UE, one or more processors may cause one or more processors to receive one or more feedback communications associated with the sidelink communication over the sidelink within a reporting period having a configurable period.

[0017] In some embodiments, a device for wireless communication may include means for transmitting sidelink communications over a sidelink between one device and another device. The device may also include means for receiving one or more feedback communications associated with the sidelink communications over the sidelink within a reporting period having a configurable period.

[0018] In some embodiments, a method of wireless communication performed by a UE may include the step of transmitting sidelink communication over a sidelink between one UE and another UE. This method may include the step of receiving one or more feedback communications associated with the sidelink communication over the sidelink within a reporting period configured to occupy the entire bandwidth of the resource pool configured for the sidelink.

[0019] In some embodiments, a UE for wireless communication may include memory and one or more processors coupled to the memory. The memory and one or more processors may be configured to transmit sidelink communications over a sidelink between one UE and another UE. The memory and one or more processors may be configured to receive one or more feedback communications associated with the sidelink communications over the sidelink within a reporting period configured to occupy the entire bandwidth of a resource pool configured for the sidelink.

[0020] In some embodiments, a non-temporary computer-readable medium may store one or more instructions for wireless communication. When one or more instructions are executed by one or more processors of a UE, one or more processors may cause one or more processors to transmit sidelink communication over a sidelink between one UE and another UE. When one or more instructions are executed by one or more processors of a UE, one or more processors may cause one or more processors to receive one or more feedback communications associated with the sidelink communication over the sidelink within a reporting period configured to occupy the entire bandwidth of the resource pool configured for the sidelink.

[0021] In some embodiments, a device for wireless communication may include means for transmitting sidelink communications over a sidelink between one device and another device. The device may also include means for receiving one or more feedback communications associated with the sidelink communications over the sidelink within a reporting period configured to occupy the entire bandwidth of a resource pool configured for the sidelink.

[0022] Embodiments are generally described in detail herein with reference to the accompanying drawings and this specification, and include methods, apparatus, systems, computer program products, non-temporary computer-readable media, user equipment, base stations, wireless communication devices, and processing systems as shown herein and in reference to the accompanying drawings and this specification.

[0023] The above provides a somewhat broad overview of the features and technical advantages of the examples provided in this disclosure, so that the following detailed explanation may be better understood. Additional features and advantages are described below. The concepts and examples disclosed may readily be used as a basis for modifying or designing other structures to accomplish the same objectives of this disclosure. Such equivalent configurations will not deviate from the scope of the appended claims. The characteristics of the concepts disclosed herein, both their organization and method of operation, along with their relevant advantages, will be better understood from the following explanation when considered in relation to the appended figures. Each of the figures is provided for illustrative and explanatory purposes only, and not as a definition of the limitations of the claims.

[0024] To enable a more detailed understanding of the features of this disclosure described above, a more detailed explanation than that briefly summarized above may be given by referring to some of the embodiments shown in the accompanying drawings. However, it should be noted that the accompanying drawings show only some typical embodiments of this disclosure and should not be considered limiting in scope, as such explanations may allow for other equally valid embodiments. The same reference numerals in different drawings may identify the same or similar elements. [Brief explanation of the drawing]

[0025] [Figure 1] A block diagram conceptually showing an example of a wireless communication network according to various aspects of the present disclosure. [Figure 2] A block diagram conceptually showing an example of a base station communicating with a user equipment (UE) in a wireless communication network according to various aspects of the present disclosure. [Figure 3] A block diagram conceptually showing an example of a frame structure in a wireless communication network according to various aspects of the present disclosure. [Figure 4A] A diagram showing one or more examples of sidelink communication feedback according to various aspects of the present disclosure. [Figure 4B] A diagram showing one or more examples of sidelink communication feedback according to various aspects of the present disclosure. [Figure 4C] A diagram showing one or more examples of sidelink communication feedback according to various aspects of the present disclosure. [Figure 4D] A diagram showing one or more examples of sidelink communication feedback according to various aspects of the present disclosure. [Figure 5] A diagram showing one or more exemplary processes, for example, executed by a UE according to various aspects of the present disclosure. [Figure 6] A diagram showing one or more exemplary processes, for example, executed by a UE according to various aspects of the present disclosure. [Figure 7] A diagram showing one or more exemplary processes, for example, executed by a UE according to various aspects of the present disclosure. [Figure 8] A diagram showing one or more exemplary processes, for example, executed by a UE according to various aspects of the present disclosure.

Mode for Carrying Out the Invention

[0026] In some cases, two or more dependent entities (e.g., UEs) may communicate with each other using sidelink signals. Real-world applications of such sidelink communication may include public safety, proximity services, UE-to-network relay, vehicle-to-everything (V2X) communication, Internet of Things (IoE) communication, IoT communication, mission-critical mesh, and / or various other suitable applications. Generally, sidelink signals may refer to signals communicated from one dependent entity (e.g., UE1) to another dependent entity (e.g., UE2) without relaying the communication through a scheduling entity (e.g., UE or BS), even though the scheduling entity may be used for scheduling and / or control purposes. In some examples, sidelink signals may be communicated using licensed spectrum (unlike wireless local area networks, which may use unlicensed spectrum).

[0027] In some cases, a UE may provide feedback on communications received from another UE on a sidelink. A UE can send feedback in one or more feedback communications. These feedback communications may be sent in one or more feedback reporting symbols included in the frame structure for the sidelink. In some cases, the frame structure for the sidelink may include feedback reporting symbols in each slot within the frame structure. However, a UE is not required to provide feedback in every slot within the frame structure. As a result, there may be unused (and therefore redundant) symbols in each slot. These unused symbols reduce the efficiency of the frame structure, for example, because they may be reused for other purposes.

[0028] Furthermore, feedback reporting symbols may be bound by additional symbols for turnarounds from receive (Rx) to transmit (Tx) and vice versa. Since sidelinks can be half-duplex, a UE may require one or more turnaround symbols to transition from Rx mode to Tx mode to transmit one or more communications, and then from Tx mode back to Rx mode after transmission is complete. The addition of these turnaround symbols in each slot within the frame structure can significantly increase the overhead of feedback reporting on sidelinks, if each slot within the frame structure contains one or more symbols for reporting feedback.

[0029] In other cases, feedback reporting symbols may be configured or scheduled on an ad-hoc basis. For example, a UE may receive a communication in a first slot and send feedback of the communication in a second slot occurring at a pre-configured offset from the first slot (e.g., a certain number of slots from the first slot) using a feedback reporting symbol. However, the feedback reporting symbol may overlap with other transmissions in the second slot, which can cause an automatic gain control setting problem. For example, other transmissions in the second slot may start with set automatic gain control parameters. When the UE sends feedback in a feedback reporting symbol in the second slot, and the feedback transmission overlaps with other transmissions in the second slot, the overlap can cause an increase in the transmit power in the second slot. As a result of the increase in transmit power, the automatic gain control parameters are no longer accurate for the other transmission, which can corrupt the other transmission.

[0030] Several embodiments described herein provide techniques and apparatus for feedback in sidelink communications. In some embodiments, a UE may receive sidelink communications on a sidelink between one UE and another UE. The UE may transmit one or more feedback communications associated with the sidelink communications on the sidelink within a reporting period. In one or more examples, the reporting period may be configured such that one or more feedback reporting symbols for the transmission of one or more feedback communications are contained in only a subset of slots that are included in the frame structure of the sidelink, rather than in all slots. The reporting period may have a configurable period (e.g., by the UE, by the base station, by another entity, etc.), and as a result, the reporting period may have a single-slot period (e.g., the reporting period occurs for each slot included in the frame structure) or a multi-slot period (e.g., the reporting period spans multiple slots such that feedback reporting symbols in the feedback reporting period occur in a subset of slots that are included in the frame structure, rather than in all slots). In this way, the overhead consumed by feedback reporting on the sidelink and / or the amount of unused feedback reporting symbols can be reduced when the reporting period consists of a multi-slot period, which can increase the efficiency of the frame structure.

[0031] The reporting period and corresponding feedback resources are configured in every UE and therefore can be system-wide. Furthermore, the reporting period (e.g., feedback reporting symbols in the reporting period) may be configured to occupy the entire bandwidth of the sidelink resource pool. In this way, other transmitters (e.g., other UEs) may create gaps in their transmissions during the reporting period (e.g., feedback reporting symbols in the reporting period) to reduce or prevent overlap of feedback transmissions with other types of transmissions. Reducing overlap of feedback transmissions reduces automatic gain control settling problems and the likelihood of transmission corruption, etc.

[0032] Feedback communication may be transmitted in one or more resource blocks of one or more feedback reporting symbols, at least in part, based on when the transmission of the corresponding sidelink communication was completed. Different transmit frequency division multiplexing (FDM) approaches can be employed to enable the distinction of feedback, which ensures that a deterministic relationship exists between the transmission and the corresponding feedback. Different types of feedback may exist, such as hybrid automatic retransmission request (HARQ) feedback and channel status information (CSI) feedback. In some embodiments, different reporting periods may be configured for different types of feedback. For example, different reporting periods may be configured for HARQ feedback and CSI feedback.

[0033] Various aspects of this disclosure will be described more fully below with reference to the accompanying drawings. However, since this disclosure can be implemented in many different forms, it should not be construed as being limited to any specific structure or function presented throughout this disclosure. Rather, these aspects are configured to make this disclosure thorough and complete and to adequately convey the scope of this disclosure to those skilled in the art. Based on the teachings of this specification, those skilled in the art should understand that the scope of this disclosure encompasses any aspect of the disclosure disclosed herein, whether implemented independently of any other aspect of the disclosure or in combination with any other aspect of the disclosure. For example, an apparatus may be implemented or a method may be practiced using any number of aspects described herein. In addition, the scope of this disclosure encompasses, in addition to or other than the various aspects of the disclosure described herein, other structures, functions, or apparatuses or methods practiced using structures and functions. It should be understood that any aspect of the disclosure disclosed herein may be implemented by one or more elements of the claims.

[0034] Next, several embodiments of telecommunications systems are presented with reference to various devices and techniques. These devices and techniques are described in the following detailed description and are illustrated in the accompanying drawings by various blocks, modules, components, circuits, steps, processes, algorithms, etc. (collectively referred to as “elements”). These elements can be implemented using hardware, software, or a combination thereof. Whether such elements are implemented as hardware or software depends on the specific application and the design constraints imposed on the overall system.

[0035] While this specification may use terminology generally associated with 3G and / or 4G wireless technologies to describe aspects, it should be noted that aspects of this disclosure may also be applicable to other generation-based communication systems, such as 5G and beyond, including NR technologies.

[0036] Figure 1 shows a wireless network 100 in which embodiments of this disclosure may be put into practice. Network 100 may be an LTE network, a 5G or NR network, etc. Wireless network 100 may include several BS110s (indicated as BS110a, BS110b, BS110c, and BS110d) and other network entities. BSs are entities that communicate with user equipment (UEs) and may also be called base stations, NR BSs, node Bs, gNBs, 5G node Bs (NBs), access points, transmit / receive points (TRPs), etc. Each BS may provide communication coverage to a specific geographic area. In 3GPP®, the term “cell” may, depending on the context in which the term is used, refer to the coverage area of ​​a BS and / or BS subsystems serving that coverage area.

[0037] A BS may provide communication coverage for macrocells, picocells, femtocells, and / or other types of cells. A macrocell may cover a relatively large geographical area (e.g., a radius of several kilometers) and may enable unrestricted access by UEs subscribing to the service. A picocell may cover a relatively small geographical area and may enable unrestricted access by UEs subscribing to the service. A femtocell may cover a relatively small geographical area (e.g., a home) and may enable limited access by UEs associated with the femtocell (e.g., UEs within a Limited Subscriber Group (CSG)). A BS for a macrocell may be called a macroBS. A BS for a picocell may be called a picoBS. A BS for a femtocell may be called a femtoBS or homeBS. In the example shown in Figure 1, BS110a may be a macroBS for macrocell 102a, BS110b may be a picoBS for picocell 102b, and BS110c may be a femtoBS for femtocell 102c. A BS may support one or more (for example, three) cells. The terms “eNB,” “base station,” “NR BS,” “gNB,” “TRP,” “AP,” “node B,” “5G NB,” and “cell” may be used interchangeably in this specification.

[0038] In some examples, cells may not necessarily be fixed, and the geographical area of ​​a cell may move according to the location of the mobile BS. In some examples, BSs may be interconnected with each other and / or with one or more other BSs or network nodes (not shown) in the wireless network 100 through various types of backhaul interfaces, such as direct physical connections and virtual networks, using any suitable transport network.

[0039] The wireless network 100 may also include relay stations. A relay station is an entity that can receive data transmissions from upstream stations (e.g., BS or UE) and send that data transmission to downstream stations (e.g., UE or BS). A relay station may also be a UE that can relay transmissions for other UEs. In the example shown in Figure 1, relay station 110d may communicate with macro BS110a and UE120d to facilitate communication between BS110a and UE120d. Relay stations are sometimes also called relay BS, relay base stations, or relays.

[0040] The wireless network 100 may be a heterogeneous network including different types of BS, such as macro BS, pico BS, femto BS, and relay BS. These different types of BS may have different transmit power levels, different coverage areas, and different effects on interference in the wireless network 100. For example, macro BS may have high transmit power levels (e.g., 5 to 40 watts), while pico BS, femto BS, and relay BS may have lower transmit power levels (e.g., 0.1 to 2 watts).

[0041] The network controller 130 may be coupled to a set of BSs and may coordinate and control these BSs. The network controller 130 may communicate with the BSs via backhaul. The BSs may also communicate with each other directly or indirectly, for example, via wireless or wireline backhaul.

[0042] UE120s (e.g., 120a, 120b, 120c, 120e, etc.) may be distributed throughout the wireless network 100, and each UE may be fixed or mobile. A UE can communicate with one or more BSs within the wireless network 100 and can communicate directly with another UE (e.g., UE120a and UE120e, as shown in Figure 1) via sidelinks or the like.

[0043] UEs are sometimes also called access terminals, terminals, mobile stations, subscriber units, stations, etc. UEs can be cellular phones (e.g., smartphones), personal digital assistants (PDAs), wireless modems, wireless communication devices, handheld devices, laptop computers, cordless phones, wireless local loop (WLL) stations, tablets, cameras, gaming devices, netbooks, smartbooks, ultrabooks, medical devices or equipment, biosensors / devices, wearable devices (smartwatches, smart clothing, smart glasses, smart wristbands, smart jewelry (e.g., smart rings, smart bracelets)), entertainment devices (e.g., music or video devices, or satellite radios), vehicle components or sensors, smart meters / sensors, industrial manufacturing equipment, global positioning system devices, or any other suitable device configured to communicate wirelessly or via a wired medium.

[0044] Some UEs may be considered machine-type communications (MTC) UEs, or advanced or enhanced machine-type communications (eMTC) UEs. MTC UEs and eMTC UEs include, for example, robots, drones, remote devices, sensors, meters, monitors, location tags, etc., which can communicate with base stations, other devices (e.g., remote devices), or several other entities. Wireless nodes may provide, for example, connectivity to a network (e.g., the Internet or a wide area network such as a cellular network) via wired or wireless communication links. Some UEs may be considered Internet of Things (IoT) devices and / or implemented as NB-IoT (Narrowband Internet of Things) devices. Some UEs may be considered customer premises equipment (CPE). UE120 may be contained within a housing that accommodates components of UE120, such as processor components and memory components.

[0045] In general, any number of wireless networks may be deployed in a given geographical area. Each wireless network may support a specific RAT and may operate on one or more frequencies. RATs are sometimes called wireless technologies or air interfaces. Frequencies are sometimes called carriers or frequency channels. Each frequency may support a single RAT in a given geographical area to avoid interference between wireless networks of different RATs. In some cases, NR or 5G RAT networks may be deployed.

[0046] As shown in Figure 1, UE120 may include a communications manager 140. As will be described in more detail elsewhere in this specification, the communications manager 140 can receive sidelink communications on a sidelink between UE120 and another UE120, and can transmit one or more feedback communications associated with the sidelink communications on the sidelink within a reporting period having a configurable period. As will be described in more detail elsewhere in this specification, the communications manager 140 can receive sidelink communications on a sidelink between UE120 and another UE120, and can transmit one or more feedback communications associated with the sidelink communications on the sidelink within a reporting period configured to occupy the entire bandwidth of a resource pool configured for the sidelink, etc. As will be described in more detail elsewhere in this specification, the communications manager 140 can transmit sidelink communications on a sidelink between UE120 and another UE120, and can receive one or more feedback communications associated with the sidelink communications on the sidelink within a reporting period having a configurable period, etc. As will be described in more detail elsewhere in this specification, the communications manager 140 may transmit sidelink communications over a sidelink between UE 120 and another UE 120, and may receive one or more feedback communications associated with the sidelink communications over the sidelink within a reporting period configured to occupy the entire bandwidth of the resource pool configured for the sidelink, etc. In addition or alternatively, the communications manager 140 may perform one or more other operations described herein.

[0047] As shown above, Figure 1 is presented simply as an example. Other examples may differ from those described with respect to Figure 1.

[0048] Figure 2 shows a block diagram of design 200 of base station 110 and UE120a and / or UE120e, which may be one of the base stations and one of the UEs in Figure 1. Base station 110 may be equipped with T antennas 234a to 234t, and UE120 may be equipped with R antennas 252a to 252r, where generally T≧1 and R≧1.

[0049] At base station 110, the transmit processor 220 may receive data for one or more UEs from data source 212, select one or more modulation and coding schemes (MCS) for each UE at least in part based on the channel quality indicator (CQI) received from the UE, process (e.g., encode and modulate) the data for each UE at least in part based on the MCS selected for the UE, and provide data symbols to all UEs. The transmit processor 220 may also process system information and control information (e.g., CQI requests, authorizations, upper-layer signaling, etc.) (e.g., semi-static resource partitioning information (SRPI), etc.) and provide overhead symbols and control symbols. The transmit processor 220 may also generate reference symbols for reference signals (e.g., cell-specific reference signals (CRS)) and synchronization signals (e.g., primary synchronization signals (PSS) and secondary synchronization signals (SSS)). The transmit (TX) multiple-input multiple-output (MIMO) processor 230 may, where applicable, perform spatial processing (e.g., precoding) on ​​data symbols, control symbols, overhead symbols, and / or reference symbols, and provide T output symbol streams to T modulators (MODs) 232a-232t. Each modulator 232 (e.g., 232a-232t) may process its respective output symbol stream (e.g., for OFDM) to obtain an output sample stream. Each modulator 232 may further process the output sample stream (e.g., convert to analog, amplify, filter, and upconvert) to obtain a downlink signal. The T downlink signals from modulators 232a-232t may each be transmitted via T antennas 234a-234t. According to various embodiments described in more detail below, a synchronization signal may be generated using location coding to convey additional information.

[0050] In UE120a and / or UE120e, antennas 252a-252r may receive downlink signals from base station 110 and / or other base stations and sidelink signals from another UE120 (for example, UE120a receives sidelink signals from UE120e and / or vice versa), and provide the received signals to demodulators (DEMOD) 254a-254r, respectively. Each demodulator 254 (for example, 254a-254r) may adjust the received signals (e.g., filtering, amplification, downconversion, and digitization) to obtain an input sample. Each demodulator 254 may further process the input sample (e.g., for OFDM) to obtain a received symbol. A MIMO detector 256 may obtain received symbols from all R demodulators 254a-254r and, where applicable, perform MIMO detection on the received symbols and provide the detected symbols. The receiving processor 258 processes the detected symbols (e.g., demodulates and decodes them) and may provide the decoded data for UE120a and / or UE120e to the data sink 260 and the decoded control information and system information to the controller / processor 280. The channel processor may identify reference signal received power (RSRP), received signal strength indicator (RSSI), reference signal received quality (RSRQ), channel quality indicator (CQI), etc. In some embodiments, one or more components of UE120a and / or UE120e may be contained within a housing.

[0051] On the uplink or sidelink, in UE120a and / or UE120e, the transmit processor 264 may receive and process data from data source 262 and control information from controller / processor 280 (e.g., for reporting, including RSRP, RSSI, RSRQ, CQI, etc.). The transmit processor 264 may also generate reference symbols for one or more reference signals. The symbols from the transmit processor 264 may, where applicable, be precoded by the TX MIMO processor 266, further processed by modulators 254a-254r (e.g., for DFT-s-OFDM, CP-OFDM, etc.), and transmitted to base station 110 on the uplink and / or to another UE120 on the sidelink. At base station 110, uplink signals from UE120a, UE120e, and other UEs are received by antenna 234 (e.g., 234a-234t), processed by demodulator 232, detected by MIMO detector 236 if applicable, and further processed by receiving processor 238 to obtain decoded data and control information sent by UE120a and / or UE120e. The receiving processor 238 may provide the decoded data to data sink 239 and the decoded control information to controller / processor 240. Base station 110 may include a communication unit 244 and communicate with network controller 130 via the communication unit 244. Network controller 130 may include a communication unit 294, controller / processor 290, and memory 292.

[0052] The controller / processor 240 of base station 110, the controller / processor 280 of UE120a and / or UE120e, and / or any other components in Figure 2 may perform one or more techniques associated with sidelink communication feedback, as will be described in more detail elsewhere in this specification. For example, the controller / processor 240 of base station 110, the controller / processor 280 of UE120a and / or UE120e, and / or any other components in Figure 2 may perform or direct the operation of, for example, process 500 in Figure 5, process 600 in Figure 6, process 700 in Figure 7, process 800 in Figure 8, and / or other processes described herein. Memories 242 and 282 may store data and program code for base station 110 and UE120a and / or UE120e, respectively. The scheduler 246 may schedule UEs for data transmission on the downlink and / or uplink.

[0053] In some embodiments, UE120 (e.g., UE120a and / or UE120e) may include means for receiving sidelink communications on a sidelink between UE120 and another UE120, and means for transmitting one or more feedback communications associated with the sidelink communications on the sidelink within a reporting period having a configurable period. In some embodiments, UE120 (e.g., UE120a and / or UE120e) may include means for transmitting sidelink communications over a sidelink between UE120 and another UE120, and means for receiving one or more feedback communications associated with the sidelink communications over the sidelink within a reporting period configured to occupy the entire bandwidth of a resource pool configured for the sidelink, etc. Additional or alternative means may include means for performing one or more other operations described herein. In some embodiments, such means may include a communications manager 140. Additional or alternative means may include one or more components of UE120a and / or UE120e as described with respect to Figure 2.

[0054] As shown above, Figure 2 is presented simply as an example. Other examples may differ from those described with respect to Figure 2.

[0055] Figure 3 shows an exemplary frame structure 300 for frequency division duplexing (FDD) on a sidelink between UEs in a telecommunications system (e.g., LTE, 5G NR, etc.). The transmit timeline for the sidelink may be divided into units of radio frames, where t represents time. Each radio frame may have a predetermined duration (e.g., 10 milliseconds (ms)) and may be divided into multiple subframes with indices from 0 to 2L-1. Each subframe may contain two slots. As an example, each radio frame may be divided into 10 subframes with indices from 0 to 9 and 20 slots with indices from 0 to 19. Each slot may contain multiple symbol periods, for example, 7 symbol periods for a normal cyclic prefix or 6 symbol periods for an extended cyclic prefix.

[0056] In some embodiments, a UE (e.g., UE120a, UE120e, etc.) may transmit one or more sidelink communications to another UE (e.g., UE120a, UE120e, etc.) over a sidelink within a transmission period which may include one or more slots included in a frame structure 300. In some embodiments, the other UE may receive one or more sidelink communications, generate feedback for one or more sidelink communications, incorporate the feedback into one or more feedback communications, and transmit one or more feedback communications to the UE over the sidelink in one or more symbols and / or slots included in a reporting period in a frame structure 300 configured for the sidelink.

[0057] Several techniques are described herein in relation to frames, subframes, slots, etc., but these techniques may also be equally applicable to other types of wireless communication structures that may be referred to using terms other than “frame,” “subframe,” “slot,” etc., in 5G NR. In some embodiments, a wireless communication structure may refer to a periodic time-limited communication unit defined by a wireless communication standard and / or protocol.

[0058] As shown above, Figure 3 is presented simply as an example. Other examples may differ from those described with respect to Figure 3.

[0059] Wireless networks may support Hybrid Automatic Retransmission Request (HARQ) for data transmissions on downlink and uplink. In HARQ, a transmitter (e.g., BS) may send one or more transmissions of a packet until the packet is accurately decoded by a receiver (e.g., UE) or encounters some other termination condition. In synchronous HARQ, all transmissions of a packet may be sent within a single interlaced subframe. In asynchronous HARQ, each transmission of a packet may be sent within any subframe.

[0060] Figures 4A to 4D are diagrams showing one or more examples of sidelink communication feedback according to various embodiments of the present disclosure. As shown in Figures 4A to 4D, Example 400 may include communication between UE120a and UE120e, UE120a and UE120e may be included in a wireless network (e.g., wireless network 100) and may communicate via a sidelink. In some embodiments, the sidelink may consist of a frame structure such as the frame structure 300 in Figure 3 and / or another sidelink frame structure.

[0061] In some embodiments, the sidelink frame structure may include multiple transmission periods. As shown in Figure 4A, a transmission period may include w slots. The w slots include slots 0 to w-1 and may be one slot or multiple slots. UE120a can transmit one or more sidelink communications to UE120e in one or more slots included in the transmission period, and / or vice versa. The number of w slots included in a transmission period may be configured by BSs included in the wireless network, network function devices included in the wireless network, network operators of the wireless network, etc. For example, the number of w slots may be configured for the entire wireless network, for a specific UE, for a specific set of UEs, and so on. In some embodiments, a transmission period may include a single slot (e.g., w=1 slot). In some embodiments, a transmission period may be a multi-slot transmission period including multiple slots (e.g., w>1 slot).

[0062] In some embodiments, the sidelink frame structure may include multiple feedback reporting periods. As shown in Figure 4A, a feedback reporting period may include x slots (e.g., slots 0 to x-1). The number of x slots included in a feedback reporting period may be configured by BSs included in the wireless network, network function devices included in the wireless network, network operators of the wireless network, etc. For example, the number of x slots may be configured for the entire wireless network, for a specific UE, for a specific set of UEs, and so on. In some embodiments, x may be the same number of slots as w. In some embodiments, x and w may be different numbers of slots.

[0063] In some embodiments, a feedback reporting period may have a single-slot period (e.g., x=1 slot). In some embodiments, a feedback reporting period may have a multi-slot period. In this case, the feedback reporting period may have a length of x slots, where x>1 slot, and as a result, each feedback reporting period may contain one feedback reporting resource occurring for each x slot. UE120a and / or UE120e may transmit one or more feedback communications in a feedback reporting resource within a feedback reporting period, including feedback for all or a subset of sidelink communications that complete transmission within the corresponding transmission period. In some embodiments, feedback communications to be transmitted by multiple UEs within a particular feedback reporting period may be multiplexed together within the feedback reporting period. For example, feedback communications may be time-division multiplexed, frequency-division multiplexed, etc., in a feedback reporting resource within a feedback reporting period.

[0064] In some embodiments, the transmission period and the corresponding feedback reporting period may be placed in adjacent sets of slots within the frame structure. For example, the transmission period may include a first set of three consecutive slots, and the corresponding feedback reporting period may include a second set of three consecutive slots that begin immediately after the completion of the first set of three consecutive slots. In some embodiments, the transmission period and the corresponding feedback reporting period may be separated by one or more intervening slots. For example, as shown in Example 400 in Figure 4A, the transmission period may include a first set of w consecutive slots, and the corresponding feedback reporting period may include a set of x consecutive slots, and the set of w slots and the set of x slots may be separated by a plurality of intervening slots.

[0065] A feedback reporting resource within a feedback reporting period may include y feedback reporting symbols (e.g., one or more consecutive symbols and / or adjacent symbols) located in a single slot (or a subset of slots) out of x slots included in the feedback reporting period. In some embodiments, the y feedback reporting symbols may include one or more symbols, one or more parts of one or more symbols (e.g., one or more half symbols, one or more 10μs parts of one or more symbols, one or more resource blocks (RBs) of one or more symbols) located at or near the end of a particular slot included in the feedback reporting period (e.g., a first slot included in the feedback reporting period, a last slot included in the feedback reporting period, or another slot included in the feedback reporting period). In some embodiments, the y feedback reporting symbols may include one or more symbols located at or near the beginning of a particular slot included in the feedback reporting period. In some embodiments, the y feedback reporting symbols may include one or more symbols located at a different location within a slot included in the feedback reporting period.

[0066] In some embodiments, z turnaround symbols may be located adjacent to y feedback report symbols. For example, one or more turnaround symbols may be located before y feedback report symbols, and one or more turnaround symbols may be located after y feedback report symbols. In this way, if a UE that is to transmit one or more feedback communications is receiving sidelink communications in a slot containing y feedback report symbols, the z turnaround symbols provide the UE with a timing buffer that transitions from receive mode to transition mode to transmit one or more communications and returns to receive mode to continue receiving sidelink communications. Turnaround symbols may also be called transmit-receive symbols, transmit-receive timings, transmit-receive turnaround symbols, etc.

[0067] One or more feedback communications to be transmitted within the feedback reporting period may include various types of feedback communications. For example, one or more feedback communications may include one or more hybrid automatic retransmission request (HARQ) communications transmitted over a physical sidelink feedback channel (PSFCH), one or more reference signal feedback communications to be transmitted over a PSFCH (e.g., channel status information (CSI) feedback communications associated with a CSI reference signal (CSI-RS), demodulated reference signal (DMRS) feedback communications, etc.).

[0068] In some embodiments, a UE may transmit different types of feedback communications within the same feedback reporting period. For example, a UE may transmit a first type of feedback communication with one or more feedback symbols out of y feedback reporting symbols, a second type of feedback communication with one or more other feedback symbols out of y feedback reporting symbols, and so on. As another example, a UE may frequency-division multiplex (FDM) the first and second types of feedback communications in y feedback reporting symbols.

[0069] In some embodiments, a UE may transmit different types of feedback communications within different feedback reporting periods. In this case, the UE may transmit a first type of feedback communication within a first feedback reporting period, a second type of feedback communication within a second feedback reporting period, and so on.

[0070] In some embodiments, different feedback transmission periods may be configured for transmitting different types of feedback communications or different combinations of feedback communications. Thus, the period for transmitting a particular type of feedback communications may differ from the period for transmitting another type of feedback communications. For example, a subset of the feedback reporting period may be configured for transmitting HARQ communications, and another subset of the feedback reporting period may be configured for transmitting HARQ communications and CSI feedback communications. This may result in a shorter period for transmitting HARQ communications compared to the period for transmitting HARQ communications and CSI feedback communications.

[0071] If the feedback reporting period configured for the transmission of HARQ communications occurs earlier in time than the feedback reporting period configured for the transmission of HARQ communications and CSI feedback communications, the UE may transmit HARQ communications within the feedback reporting period configured for the transmission of HARQ communications and may transmit CSI feedback communications within the feedback reporting period configured for the transmission of HARQ communications and CSI feedback communications, or the UE may refrain from transmitting HARQ communications within the feedback reporting period configured for the transmission of HARQ communications and may transmit both HARQ communications and CSI feedback communications within the feedback reporting period configured for the transmission of HARQ communications and CSI feedback communications.

[0072] Figures 4B to 4D show examples of UE120a and UE120e performing sidelink communication based at least partially on the frame structure (or similar frame structure) 400 shown in Figure 4A. As shown by reference nominal 402 in Figure 4B and Figure 4C, UE120a may receive sidelink communication from UE120e on the sidelink during the transmission period. Sidelink communication may include physical sidelink shared channel (PSSCH) communication, physical sidelink controlled channel (PSCCH) communication, or other types of sidelink communication. As shown by reference nominal 404 in Figure 4B, UE120a may receive sidelink communication and transmit one or more feedback communications associated with the sidelink communication to UE120e. UE120a may transmit one or more feedback communications on the PSFCH of the sidelink during the feedback reporting period associated with the transmission period. In particular, UE120 may transmit one or more feedback communications on the feedback reporting resource during the feedback reporting period.

[0073] In some embodiments, the feedback reporting period may have a single-slot cycle (in which case, feedback reporting resources may occur per slot) or a multi-slot cycle (in which case, feedback reporting resources may occur in cycles of two or more slots). In some embodiments, the feedback reporting period may have a configurable cycle such that feedback reporting resources can be switched between occurring per slot and occurring every two or more slots. In this case, a base station (e.g., the serving base station 110 of UE120a or another base station 110) may configure the period of the feedback reporting period to be one slot, multiple slots, etc. In some embodiments, the base station may configure the period of the feedback reporting period dynamically (e.g., via downlink control information (DCI) signaling) or semi-statically (e.g., via medium access control element (MAC-CE) signaling or radio resource control (RRC) signaling). Thus, UE120a may identify the period of the feedback reporting period at least in part based on signaling received from the base station. The signaling can identify the period of the reporting period, identify the time-domain resources identified by the feedback reporting period, identify the location of the feedback reporting resources within the feedback reporting period (for example, it can identify the slot within the feedback reporting period that contains the feedback reporting resources (which may be the first slot, the last slot, or another slot)), identify the location of the feedback reporting resources within the slot that contains the feedback reporting resources, and so on. In this way, the UE120a can identify the feedback reporting period and / or the feedback reporting resources within the feedback reporting period based at least in part on the signaling received from the base station.

[0074] Furthermore, as shown in Figures 4C and 4D, the feedback reporting resource during the feedback reporting period may be configured to occupy the entire bandwidth of the resource pool configured for the sidelink. The resource pool configured for the sidelink may be the bandwidth portion configured for the sidelink and may include a subset of frequency domain resources (e.g., subcarriers, component carriers, subchannels, resource blocks, etc.) that are included in the entire frequency bandwidth allocated to UE120a and / or UE120e. In this case, the resource pool configured for the sidelink may contain fewer frequency resources than those available for the access links of UE120a and / or UE120e, resulting in a narrower frequency bandwidth for the resource pool configured for the sidelink compared to the access links. For example, if the resource pool configured for the sidelink spans 100 resource blocks in bandwidth, the feedback reporting resource may be configured to span all 100 resource blocks. In this way, the entire bandwidth of the resource pool configured for the sidelink is scheduled for feedback transmissions in the feedback reporting resource, preventing other types of transmissions from occurring in the feedback reporting resource.

[0075] As further shown in Figures 4C and 4D, in some embodiments, feedback communications (e.g., feedback communications 1 to 5) may be frequency-division multiplexed in a feedback reporting resource. The time location and / or frequency location of each feedback communication in the feedback reporting resource may be at least partially based on the slot and / or symbol in which the associated sidelink communications (e.g., communications 1 to 5) are received, and at least partially based on the subchannel, subcarrier, or resource block in which the associated sidelink communications are received. In this case, each feedback communication may be transmitted over a subset of resource blocks that are included in the entire bandwidth of the resource pool configured for the sidelink. Thus, each feedback communication occupies a bandwidth smaller than the entire bandwidth of the resource pool configured for the sidelink. In some embodiments, the combined bandwidth occupied by all the feedback communications may be less than or equal to the resource pool configured for the sidelink. In some embodiments, a single feedback communication may be configured to occupy the entire bandwidth of the resource pool configured for the sidelink. In some embodiments, feedback communications may be time-division multiplexed within a feedback reporting period (for example, in a feedback reporting resource included in the feedback reporting period), and feedback communications may be transmitted in adjacent symbols included in the feedback reporting period (for example, in a feedback reporting resource included in the feedback reporting period).

[0076] In some embodiments, the UE120e may identify a particular feedback reporting period from a set of feedback reporting periods configured for a sidelink as a reporting period adjacent to the transmission period in which the sidelink communication was received. For example, as shown in Figure 4C, when the UE120e transmits feedback for sidelink communication 5, the UE120e may identify a reporting period based at least in part on the fact that the start slot of the reporting period is adjacent to the slot in which the transmission of sidelink communication 5 was completed, or at least in part on the fact that the start slot of the reporting period is adjacent to the end slot of the transmission period in which the transmission of sidelink communication 5 was completed.

[0077] In some embodiments, the UE120e may identify a particular feedback reporting period from a plurality of feedback reporting periods configured for a sidelink, as a reporting period that occurs in at least a threshold number of slots after the transmission period in which the sidelink communication was received. For example, as shown in Figure 4D, when the UE120e transmits feedback for sidelink communication 5, the UE120e may identify the reporting period at least in part on the fact that the starting slot of the reporting period is at least a threshold number of slots (e.g., one or more slots) after the slot in which the transmission of sidelink communication 5 was completed, or at least in part on the fact that the starting slot of the reporting period is at least a threshold number of slots (e.g., one or more slots) after the ending slot of the transmission period in which the transmission of sidelink communication 5 was completed.

[0078] In some embodiments, the UE120e may identify a particular feedback reporting period from a set of feedback reporting periods configured for a sidelink, based at least in part on a variety of factors. In some embodiments, the UE120e may identify a particular feedback reporting period, based at least in part on the processing capacity of the UE120e. For example, if the UE120e can receive one or more sidelink communications, decode one or more sidelink communications, and transmit one or more feedback communications within the next occurring feedback reporting period, then the UE120e may transmit one or more feedback communications within the next scheduled feedback reporting period. Otherwise, the UE120e may transmit one or more feedback communications within a subsequent feedback reporting period (for example, a feedback reporting period occurring at least M slot offset after the end of a transmission period, where M is greater than or equal to the processing capacity of the UE120e in the slot) when it is ready to transmit one or more feedback communications.

[0079] In some embodiments, the UE120e may identify a feedback reporting period based at least in part on one or more quality of service (QoS) parameters. For example, the UE120e may identify a feedback reporting period that satisfies latency parameters for transmitting HARQ communications, a feedback reporting period that satisfies latency parameters for transmitting CSI feedback communications, and so on. As another example, the UE120e may identify a feedback reporting period as the next scheduled feedback reporting period based at least in part on priority parameters assigned to the UE120e, and may identify a feedback reporting period as a subsequent feedback reporting period based at least in part on the priority parameters assigned to the UE120e being lower priority than another UE that is scheduled to transmit one or more other feedback communications within the next scheduled feedback reporting period.

[0080] In this way, the UE120e can transmit one or more feedback communications with y feedback reporting symbols contained in a slot of feedback reporting period. In this way, the y feedback reporting symbols are contained in a subset of the slots contained in the sidelink frame structure, as opposed to all slots, so that the feedback reporting symbols (and / or associated feedback reporting periods) have a multi-slot period. This reduces the overhead consumed by feedback reporting on the sidelink, reduces the amount of unused feedback reporting symbols, and increases the efficiency of the frame structure. Furthermore, the y feedback reporting symbols (and / or associated feedback reporting periods) may be configured to occupy the entire bandwidth of the resource pool configured for the sidelink on which the feedback communication is transmitted, so that other transmissions on the sidelink do not overlap with the feedback communication. This reduces the problem of automatic gain control and reduces the amount of corrupted transmissions on the sidelink.

[0081] As shown above, Figures 4A and 4B are given as examples. Other examples may differ from those described with respect to Figures 4A and 4B.

[0082] Figure 5 shows an exemplary process 500 performed by, for example, a UE, according to various aspects of the present disclosure. The exemplary process 500 is an example in which a UE (e.g., UE120, UE120a, UE120e, etc.) performs an operation associated with feedback in sidelink communication.

[0083] As shown in Figure 5, in some embodiments, process 500 may include receiving sidelink communication on a sidelink between one UE and another UE (block 510). For example, a UE (using, for example, a receiving processor 258, a transmitting processor 264, a controller / processor 280, memory 282, etc.) may receive sidelink communication on a sidelink between one UE and another UE, as described above.

[0084] As further shown in Figure 5, in some embodiments, process 500 may include transmitting one or more feedback communications associated with the sidelink communication over the sidelink within a reporting period having a configurable period (block 520). For example, the UE (using, for example, a receiving processor 258, a transmitting processor 264, a controller / processor 280, memory 282, etc.) may transmit one or more feedback communications associated with the sidelink communication over the sidelink within a reporting period having a configurable period, as described above.

[0085] Process 500 may include additional embodiments, such as any single embodiment or any combination of embodiments, as described below and / or elsewhere in this specification with respect to one or more other processes.

[0086] In the first embodiment, the reporting period consists of a cycle comprising one or more slots. In the second embodiment, either alone or in combination with the first embodiment, process 500 includes identifying a reporting period based at least in part on the fact that the starting slot of the reporting period is adjacent to the slot in which the transmission of the sidelink communication has been completed. In the third embodiment, either alone or in combination with one or more of the first and second embodiments, process 500 includes identifying a reporting period based at least in part on the fact that the reporting period occurs after the slot in which the transmission of the sidelink communication has been completed, in at least a threshold number of slots.

[0087] In the fourth aspect, transmitting one or more feedback communications within a reporting period, either alone or in combination with one or more of the first to third aspects, includes transmitting one or more feedback communications with one or more symbols included in the reporting period. In the fifth aspect, either alone or in combination with one or more of the first to fourth aspects, one or more symbols are adjacent symbols, and the reporting period includes a first transmit / receive turnaround symbol adjacent to a first symbol among the one or more symbols, and a second transmit / receive turnaround symbol adjacent to a second symbol among the one or more symbols.

[0088] In the sixth aspect, either alone or in combination with one or more of the first to fifth aspects, process 500 includes identifying a reporting period based at least in part on the processing capacity of the UE. In the seventh aspect, either alone or in combination with one or more of the first to sixth aspects, process 500 includes identifying a reporting period based at least in part on the QoS level associated with the sidelink communication. In the eighth aspect, either alone or in combination with one or more of the first to seventh aspects, the QoS level associated with the sidelink communication is based at least in part on a priority parameter associated with the sidelink communication, a latency parameter associated with the sidelink communication, or a combination of a priority parameter associated with the sidelink communication and a latency parameter associated with the sidelink communication.

[0089] In the ninth aspect, transmitting one or more feedback communications within a reporting period, either alone or in combination with one or more of the first to eighth aspects, includes transmitting one or more feedback communications on a feedback reporting resource included in the reporting period. In the tenth aspect, one or more feedback communications, either alone or in combination with one or more of the first to ninth aspects, includes at least one of the following: a HARQ communication transmitted on a PSFCH, a CSI feedback communication transmitted on another PSFCH, or a combination of a HARQ communication transmitted on a PSFCH and a CSI feedback communication transmitted on another PSFCH.

[0090] In the eleventh aspect, either alone or in combination with one or more of the first to tenth aspects, one or more feedback communications are multiplexed together with one or more other feedback communications transmitted by another UE into one or more symbols included in a reporting period, the reporting period occupies the entire bandwidth of the resource pool configured for the sidelink such that no other transmissions other than the one or more feedback communications and the one or more other feedback communications occur within the one or more symbols.

[0091] In the twelfth aspect, one or more feedback communications, either alone or in combination with one or more of the first to eleventh aspects, include a HARQ communication transmitted on a PSFCH and a CSI feedback communication transmitted on another PSFCH, wherein the HARQ communication and the CSI feedback communication are time-division multiplexed within the reporting period. In the thirteenth aspect, one or more feedback communications, either alone or in combination with one or more of the first to twelfth aspects, include a HARQ communication transmitted on a PSFCH and a CSI feedback communication transmitted on another PSFCH, wherein the HARQ communication and the CSI feedback communication are frequency-division multiplexed within the reporting period.

[0092] In the 14th aspect, either alone or in combination with one or more of the 1st to 13th aspects, one or more feedback communications include HARQ communications transmitted on a PSFCH and CSI feedback communications transmitted on another PSFCH. In the 15th aspect, either alone or in combination with one or more of the 1st to 14th aspects, process 500 includes identifying reporting periods based at least in part on the periods of one or more slots in a plurality of reporting periods for transmitting HARQ communications and the periods of one or more slots in a plurality of reporting periods for transmitting CSI feedback communications.

[0093] In the 16th aspect, one or more feedback communications, either alone or in combination with one or more of the 1st to 15th aspects, include HARQ communications transmitted on a PSFCH. In the 17th aspect, either alone or in combination with one or more of the 1st to 16th aspects, process 500 includes transmitting CSI feedback communications associated with sidelink communications on another PSFCH during another reporting period. In the 18th aspect, either alone or in combination with one or more of the 1st to 17th aspects, receiving sidelink communications includes receiving multiple sidelink communications transmitted on a sidelink during a transmission period.

[0094] In the 19th aspect, transmitting one or more feedback communications, either alone or in combination with one or more of the 1st to 18th aspects, includes transmitting one or more feedback communications for multiple sidelink communications during a reporting period. In the 20th aspect, receiving sidelink communications, either alone or in combination with one or more of the 1st to 19th aspects, includes receiving multiple sidelink communications transmitted on a sidelink during a transmission period. In the 21st aspect, transmitting one or more feedback communications, either alone or in combination with one or more of the 1st to 20th aspects, includes transmitting one or more feedback communications for a subset of multiple sidelink communications during a reporting period.

[0095] In the 22nd aspect, either alone or in combination with one or more of the 1st to 21st aspects, the reporting period includes a reporting period that occupies the entire bandwidth of the resource pool configured for the sidelink, a UE-specific reporting period, or a reporting period configured for a set of UEs. In the 23rd aspect, either alone or in combination with one or more of the 1st to 22nd aspects, the reporting period is comprised of multiple reporting periods configured for the sidelink. In the 24th aspect, either alone or in combination with one or more of the 1st to 23rd aspects, transmitting one or more feedback communications within a reporting period includes transmitting one or more feedback communications on one or more RBs of one or more symbols included in the reporting period, where one or more RBs are associated with the slot on which the sidelink communication transmission was completed.

[0096] Figure 5 shows an exemplary block of process 500, but in some embodiments, process 500 may include additional blocks, fewer blocks, different blocks, or blocks arranged differently compared to the block illustrated in Figure 5. Additionally or alternatively, two or more blocks of process 500 may be performed in parallel.

[0097] Figure 6 shows an exemplary process 600 performed by a UE, for example, according to various aspects of the present disclosure. The exemplary process 600 is an example in which a UE (e.g., UE120, UE120a, UE120e, etc.) performs an operation associated with feedback in sidelink communication.

[0098] As shown in Figure 6, in some embodiments, process 600 may include receiving sidelink communication on a sidelink between one UE and another UE (block 610). For example, a UE (using, for example, a receiving processor 258, a transmitting processor 264, a controller / processor 280, memory 282, etc.) may receive sidelink communication on a sidelink between one UE and another UE, as described above.

[0099] As further shown in Figure 6, in some embodiments, process 600 may include transmitting one or more feedback communications associated with the sidelink communication on the sidelink within a reporting period configured to occupy the entire bandwidth of the resource pool configured for the sidelink (block 620). For example, the UE (using, for example, a receiving processor 258, a transmitting processor 264, a controller / processor 280, memory 282, etc.) may transmit one or more feedback communications associated with the sidelink communication on the sidelink within a reporting period configured to occupy the entire bandwidth of the resource pool configured for the sidelink, as described above.

[0100] Process 600 may include additional embodiments, such as any single embodiment or any combination of embodiments, as described below and / or elsewhere in this specification with respect to one or more other processes.

[0101] In the first embodiment, the reporting period consists of a period comprising one or more slots. In the second embodiment, each of the one or more feedback communications, either alone or in combination with the first embodiment, occupies a bandwidth smaller than the total bandwidth. In the third embodiment, transmitting one or more feedback communications within a reporting period, either alone or in combination with one or more of the first and second embodiments, includes transmitting one or more feedback communications with one or more adjacent symbols included in the reporting period.

[0102] Figure 6 shows an exemplary block of process 600, but in some embodiments, process 600 may include additional blocks, fewer blocks, different blocks, or blocks arranged differently compared to the block illustrated in Figure 6. Additionally or alternatively, two or more blocks of process 600 may be performed in parallel.

[0103] Figure 7 shows an exemplary process 700 performed by, for example, a UE, according to various aspects of the present disclosure. The exemplary process 700 is an example in which a UE (e.g., UE120, UE120a, UE120e, etc.) performs an operation associated with feedback in sidelink communication.

[0104] As shown in Figure 7, in some embodiments, process 700 may include transmitting sidelink communication over a sidelink between one UE and another UE (block 710). For example, a UE (using, for example, a receiving processor 258, a transmitting processor 264, a controller / processor 280, memory 282, etc.) may transmit sidelink communication over a sidelink between one UE and another UE, as described above.

[0105] As further shown in Figure 7, in some embodiments, process 700 may include receiving one or more feedback communications associated with the sidelink communication on the sidelink within a reporting period having a configurable period (block 720). For example, the UE (using, for example, a receiving processor 258, a transmitting processor 264, a controller / processor 280, memory 282, etc.) may, as described above, receive one or more feedback communications associated with the sidelink communication on the sidelink within a reporting period having a configurable period.

[0106] Process 700 may include additional embodiments, such as any single embodiment or any combination of embodiments, as described below and / or elsewhere in this specification with respect to one or more other processes.

[0107] In the first embodiment, the reporting period consists of a multi-slot period. In the second embodiment, either alone or in combination with the first embodiment, process 700 includes identifying a reporting period based at least in part on the fact that the starting slot of the reporting period is adjacent to the slot in which the transmission of the sidelink communication has been completed. In the third embodiment, either alone or in combination with one or more of the first and second embodiments, process 700 includes identifying a reporting period based at least in part on the fact that the reporting period occurs after the slot in which the transmission of the sidelink communication has been completed, in at least a threshold number of slots.

[0108] In the fourth aspect, receiving one or more feedback communications within a reporting period, either alone or in combination with one or more of the first to third aspects, includes receiving one or more feedback communications with one or more symbols included in the reporting period. In the fifth aspect, either alone or in combination with one or more of the first to fourth aspects, one or more symbols are adjacent symbols, and the reporting period includes a first transmit / receive turnaround symbol adjacent to a first symbol among the one or more symbols, and a second transmit / receive turnaround symbol adjacent to a second symbol among the one or more symbols.

[0109] In the sixth aspect, the process 700 includes identifying a reporting period, either alone or in combination with one or more of the first to fifth aspects, based at least in part on the processing capacity of another UE. In the seventh aspect, the process 700 includes identifying a reporting period, either alone or in combination with one or more of the first to sixth aspects, based at least in part on the QoS level associated with the sidelink communication.

[0110] Figure 7 shows an exemplary block of process 700, but in some embodiments, process 700 may include additional blocks, fewer blocks, different blocks, or blocks arranged differently compared to the block illustrated in Figure 7. Additionally or alternatively, two or more blocks of process 700 may be performed in parallel.

[0111] Figure 8 shows an exemplary process 800 performed by a UE, for example, according to various aspects of the present disclosure. The exemplary process 800 is an example in which a UE (e.g., UE120, UE120a, UE120e, etc.) performs an operation associated with feedback in sidelink communication.

[0112] As shown in Figure 8, in some embodiments, process 800 may include transmitting sidelink communication over a sidelink between one UE and another UE (block 810). For example, a UE (using, for example, a receiving processor 258, a transmitting processor 264, a controller / processor 280, memory 282, etc.) may transmit sidelink communication over a sidelink between one UE and another UE, as described above.

[0113] As further shown in Figure 8, in some embodiments, process 800 may include receiving one or more feedback communications associated with the sidelink communication on the sidelink within a reporting period configured to occupy the entire bandwidth of the resource pool configured for the sidelink (block 820). For example, the UE (using, for example, a receiving processor 258, a transmitting processor 264, a controller / processor 280, memory 282, etc.) may, as described above, receive one or more feedback communications associated with the sidelink communication on the sidelink within a reporting period configured to occupy the entire bandwidth of the resource pool configured for the sidelink.

[0114] Process 800 may include additional embodiments, such as any single embodiment or any combination of embodiments, as described below and / or elsewhere in this specification with respect to one or more other processes.

[0115] In the first embodiment, the reporting period consists of a period comprising one or more slots. In the second embodiment, each of the one or more feedback communications, either alone or in combination with the first embodiment, occupies less bandwidth than the total bandwidth. In the third embodiment, either alone or in combination with one or more of the first and second embodiments, receiving one or more feedback communications within a reporting period includes receiving one or more feedback communications with one or more adjacent symbols included in the reporting period.

[0116] Figure 8 shows an exemplary block of process 800, but in some embodiments, process 800 may include additional blocks, fewer blocks, different blocks, or blocks arranged differently compared to the block illustrated in Figure 8. Additional or alternative, two or more blocks of process 800 may be performed in parallel.

[0117] The foregoing disclosures are illustrative and explanatory and are not exhaustive, nor do they limit the embodiments to the exact forms disclosed. Modifications and variations may be made in consideration of the foregoing disclosures, or derived from the practices of the embodiments.

[0118] As used herein, “Components” shall be broadly interpreted as hardware, firmware, or a combination of hardware and software. As used herein, “Processor” is implemented as hardware, firmware, or a combination of hardware and software.

[0119] It is evident that the systems and / or methods described herein may be implemented in various forms of hardware, firmware, or combinations of hardware and software. Actual dedicated control hardware or software code used to implement these systems and / or methods is not limiting to their embodiments. Therefore, the operation and behavior of the systems and / or methods have been described herein without reference to specific software code. It should be understood that software and hardware may be designed to implement the systems and / or methods based at least in part on the descriptions herein.

[0120] Even if specific combinations of features are enumerated in the claims and / or disclosed herein, these combinations do not limit the disclosure of various embodiments. In practice, many of these features may be combined in ways not specifically enumerated in the claims and / or disclosed herein. Each dependent claim described below may depend directly on only one claim, but the disclosure of various embodiments includes each dependent claim combined with any other claims in the claim set. The phrase “at least one” from the list of items refers to any combination of those items containing a single member. For example, “at least one of a, b, or c” is intended to include a, b, c, ab, ac, bc, and abc, as well as any combination of multiple identical elements (e.g., aa, aaa, aab, aac, abb, acc, bb, bbb, bbc, cc, and ccc, or any other order of a, b, and c).

[0121] None of the elements, actions, or commands used herein should be construed as important or essential unless expressly stated otherwise. Furthermore, the articles “a” and “an” used herein include one or more items and may be used interchangeably with “one or more.” Additionally, the terms “set” and “group” used herein include one or more items (e.g., related items, unrelated items, combinations of related and unrelated items) and may be used interchangeably with “one or more.” When only one item is intended, the phrase “only one” or similar wording should be used. Furthermore, terms such as “has,” “have,” and “having” used herein are non-restrictive. Additionally, the phrase “based on” means “at least partially based on” unless otherwise specified. [Explanation of symbols]

[0122] 100 Wireless Networks 102a Macrocell 102b picocell 102c femtocell 110 BS 110d relay station 120 UE 130 Network Controllers 140 Communications Manager 200 designs 212 data sources 220 Transmitting Processors 230 Transmit (TX) Multiple Input Multiple Output (MIMO) Processor 232a~232t Modulator (MOD) 234a~234t Antenna 236 MIMO detector 238 receiving processors 239 Data Sync 240 Controllers / Processors 242 memory 244 Communication Unit 246 Scheduler 252a~252r Antenna 254a~254r Demodulator (DEMOD) 256 MIMO detector 258 receiving processors 260 Data Sync 262 data sources 264 Transmitting Processors 236 MIMO detector 280 Controllers / Processors 282 memory 290 Controllers / Processors 292 memory 294 Communication Unit 300 frame structure 400 frame structure 500 processes 600 processes 700 processes 800 processes

Claims

1. A method of wireless communication performed by a user device (UE), The steps include receiving sidelink communication on a sidelink between the aforementioned UE and another UE, The steps include: transmitting one or more feedback communications associated with the side link communication on the side link within a reporting period having a configurable period; A method that includes this.

2. The method according to claim 1, wherein the reporting period is comprised of a cycle comprising one or more slots.

3. The step of identifying the reporting period, at least in part, on the fact that the starting slot of the reporting period is adjacent to the slot in which the sidelink communication transmission has been completed. The method according to claim 1, further comprising:

4. The step of identifying the reporting period, at least in part, on the basis that the reporting period occurs for at least a threshold number of slots after the slot in which the sidelink communication transmission has been completed. The method according to claim 1, further comprising:

5. The step of transmitting one or more feedback communications within the reporting period is: The step of transmitting the one or more feedback communications with one or more symbols included in the reporting period. The method according to claim 1, including the method described in claim 1.

6. The one or more symbols mentioned above are adjacent symbols, The aforementioned reporting period is, A first transmit / receive turnaround symbol adjacent to a first symbol among the one or more symbols, A second transmit / receive turnaround symbol adjacent to a second symbol among the one or more symbols mentioned above, The method according to claim 5, including the method described in claim 5.

7. Steps to identify the reporting period, at least in part, based on the processing capacity of the UE. The method according to claim 1, further comprising:

8. The step of identifying the reporting period, at least in part, based on the quality of service (QoS) level associated with the side-link communication. The method according to claim 1, further comprising:

9. The QoS level associated with the side link communication is Priority parameters associated with the side link communication, The latency parameter associated with the sidelink communication, or The combination of the priority parameter associated with the side link communication and the latency parameter associated with the side link communication. The method according to claim 8, at least in part.

10. The step of transmitting one or more feedback communications within the reporting period is: The step of transmitting one or more feedback communications using the feedback reporting resources included in the aforementioned reporting period. The method according to claim 1, including the method described in claim 1.

11. The one or more feedback communications described above are: Hybrid Automatic Retransmission Request (HARQ) communications transmitted over a Physical Sidelink Feedback Channel (PSFCH), Channel State Information (CSI) feedback communication transmitted over another PSFCH, or A combination of the HARQ communication transmitted on the aforementioned PSFCH and the CSI feedback communication transmitted on the other PSFCH. The method according to claim 1, comprising at least one of the following.

12. The one or more feedback communications are multiplexed together with one or more other feedback communications transmitted by the other UE into one or more symbols included in the reporting period. The reporting period occupies the entire bandwidth of the resource pool configured for the sidelink so that no transmissions other than the one or more feedback communications and the one or more other feedback communications occur in the one or more symbols. The method according to claim 1.

13. The one or more feedback communications described above are: Hybrid Automatic Retransmission Request (HARQ) communications transmitted over a Physical Sidelink Feedback Channel (PSFCH), and Channel Status Information (CSI) feedback communication transmitted via another PSFCH. The HARQ communication and the CSI feedback communication are time-division multiplexed within the reporting period. The method according to claim 1.

14. The one or more feedback communications described above are: Hybrid Automatic Retransmission Request (HARQ) communications transmitted over a Physical Sidelink Feedback Channel (PSFCH), and Channel Status Information (CSI) feedback communication transmitted via another PSFCH. The HARQ communication and the CSI feedback communication are frequency-division multiplexed within the reporting period. The method according to claim 1.

15. The one or more feedback communications described above are: Hybrid Automatic Retransmission Request (HARQ) communications transmitted over a Physical Sidelink Feedback Channel (PSFCH), and Channel Status Information (CSI) feedback communication transmitted via another PSFCH. The method according to claim 1, including the method described in claim 1.

16. This is a step of identifying the aforementioned reporting period, The period of one or more slots in multiple reporting periods for transmitting HARQ communications, and The period of one or more slots in the multiple reporting periods for transmitting CSI feedback communication Steps to identify the reporting period based at least partially on The method according to claim 15, further comprising:

17. The one or more feedback communications described above are: Hybrid Auto Retransmission Request (HARQ) communication transmitted over a Physical Sidelink Feedback Channel (PSFCH) The method according to claim 1, including the method described in claim 1.

18. The step of transmitting channel status information (CSI) feedback communication associated with the sidelink communication in a different reporting period, in a different PSFCH. The method according to claim 17, further comprising:

19. The step of receiving the side link communication is: The step of receiving multiple sidelink communications transmitted over the sidelink during the transmission period. The method according to claim 1, including the method described in claim 1.

20. The step of transmitting one or more feedback communications is: During the reporting period, the step of transmitting one or more feedback communications for the multiple sidelink communications. The method according to claim 19, including the method described in claim 19.

21. The step of transmitting one or more feedback communications is: During the reporting period, the step of transmitting one or more feedback communications for a subset of the multiple sidelink communications. The method according to claim 19, including the method described in claim 19.

22. The aforementioned reporting period is, The reporting period occupies the entire bandwidth of the resource pool configured for the aforementioned side link. UE-specific reporting period, or Reporting period configured for the UE set The method according to claim 1, including the method described in claim 1.

23. The method according to claim 1, wherein the reporting period includes a plurality of reporting periods configured for the side link.

24. The step of transmitting one or more feedback communications within the reporting period is: The step of transmitting the one or more feedback communications in one or more resource blocks (RBs) of one or more symbols included in the reporting period, wherein the one or more RBs are associated with the slot in which the sidelink communication transmission has been completed. The method according to claim 1, including the method described in claim 1.

25. A method of wireless communication performed by a user device (UE), The steps include receiving sidelink communication on a sidelink between the aforementioned UE and another UE, The steps include: transmitting one or more feedback communications associated with the sidelink communication on the sidelink within a reporting period configured to occupy the entire bandwidth of the resource pool configured for the sidelink; A method that includes this.

26. The method according to claim 25, wherein the reporting period has a multi-slot period.

27. The method according to claim 25, wherein each of the one or more feedback communications occupies a bandwidth smaller than the total bandwidth.

28. The step of transmitting one or more feedback communications within the reporting period is: The step of transmitting the one or more feedback communications with one or more adjacent symbols included in the reporting period. The method according to claim 25, including the method described in claim 25.

29. User equipment (UE) for wireless communication, Memory and The memory includes one or more processors coupled to the memory, and the memory and the one or more processors are Receiving sidelink communication on a sidelink between the aforementioned UE and another UE, On the side link, transmit one or more feedback communications associated with the side link communication within a reporting period having a configurable period. It is configured to do the following: User equipment (UE).

30. The UE according to claim 29, wherein the reporting period is comprised of a cycle comprising one or more slots.

31. The UE according to claim 29, wherein the reporting period occupies the entire bandwidth of the resource pool configured for the side link.

32. The memory and the one or more processors are further: Identifying the reporting period based at least in part on the fact that the starting slot of the reporting period is adjacent to the slot in which the sidelink communication transmission has been completed. The UE according to claim 29, which is for the purpose of...

33. The memory and the one or more processors are further: Identifying the reporting period is at least partially based on the fact that the reporting period occurs for at least a threshold number of slots after the slot in which the sidelink communication transmission is completed. The UE according to claim 29, which is for the purpose of...

34. When the memory and the one or more processors transmit the one or more feedback communications within the reporting period, One or more symbols included in the reporting period transmit the one or more feedback communications. The UE according to claim 29, which is for the purpose of...

35. The one or more symbols mentioned above are adjacent symbols, The aforementioned reporting period is, A first transmit / receive turnaround symbol adjacent to a first symbol among the one or more symbols, A second transmit / receive turnaround symbol adjacent to a second symbol among the one or more symbols mentioned above, The UE according to claim 34, including the UE described in claim 34.

36. The memory and the one or more processors are further: Identify the reporting period based at least in part on the processing capacity of the UE. The UE according to claim 29, which is for the purpose of...

37. The memory and the one or more processors are further: Identify the reporting period based at least in part on the quality of service (QoS) level associated with the side-link communication. The UE according to claim 29, which is for the purpose of...

38. The one or more feedback communications are multiplexed together with one or more other feedback communications transmitted by the other UE into one or more symbols included in the reporting period. The reporting period occupies the entire bandwidth of the resource pool configured for the sidelink so that no transmissions other than the one or more feedback communications and the one or more other feedback communications occur in the one or more symbols. The UE according to claim 29.

39. User equipment (UE) for wireless communication, Memory and The memory includes one or more processors coupled to the memory, and the memory and the one or more processors are Receiving sidelink communication on a sidelink between the aforementioned UE and another UE, On the side link, transmit one or more feedback communications associated with the side link communication within a reporting period that occupies the entire bandwidth of the resource pool configured for the side link. It is configured to do the following: User equipment (UE).

40. The UE according to claim 39, wherein the reporting period has a multi-slot period.

41. The UE according to claim 39, wherein each of the one or more feedback communications occupies a bandwidth smaller than the total bandwidth.

42. A method of wireless communication performed by a user device (UE), The steps include transmitting sidelink communication over a sidelink between the aforementioned UE and another UE, The steps include receiving one or more feedback communications associated with the side link communication on the side link within a reporting period having a configurable period, and A method that includes this.

43. The method according to claim 42, wherein the reporting period is comprised of a cycle comprising one or more slots.

44. The step of identifying the reporting period, at least in part, on the fact that the starting slot of the reporting period is adjacent to the slot in which the sidelink communication transmission has been completed. The method according to claim 42, further comprising:

45. The step of identifying the reporting period, at least in part, on the basis that the reporting period occurs for at least a threshold number of slots after the slot in which the sidelink communication transmission has been completed. The method according to claim 42, further comprising:

46. The step of receiving one or more feedback communications within the reporting period is: The step of receiving the one or more feedback communications with one or more symbols included in the reporting period. The method according to claim 42, including the method described in claim 42.

47. The one or more symbols mentioned above are adjacent symbols, The aforementioned reporting period is, A first transmit / receive turnaround symbol adjacent to a first symbol among the one or more symbols, A second transmit / receive turnaround symbol adjacent to a second symbol among the one or more symbols mentioned above, The method according to claim 46, including the method described in claim 46.

48. Steps to identify the reporting period, at least in part, based on the processing capacity of the other UE. The method according to claim 42, further comprising:

49. The step of identifying the reporting period, at least in part, based on the quality of service (QoS) level associated with the side-link communication. The method according to claim 42, further comprising:

50. A method of wireless communication performed by a user device (UE), The steps include transmitting sidelink communication over a sidelink between the aforementioned UE and another UE, The steps include receiving one or more feedback communications associated with the sidelink communication on the sidelink within a reporting period configured to occupy the entire bandwidth of the resource pool configured for the sidelink, and A method that includes this.

51. The method according to claim 50, wherein the reporting period is comprised of a cycle comprising one or more slots.

52. The method according to claim 50, wherein each of the one or more feedback communications occupies a bandwidth smaller than the total bandwidth.

53. The step of receiving one or more feedback communications within the reporting period is: The step of receiving the one or more feedback communications with one or more adjacent symbols included in the reporting period. The method according to claim 50, including the method described in claim 50.

54. User equipment (UE) for wireless communication, Memory and The memory includes one or more processors coupled to the memory, and the memory and the one or more processors are Transmitting sidelink communication over a sidelink between the aforementioned UE and another UE, On the side link, one or more feedback communications associated with the side link communication are received within a reporting period having a configurable period. It is configured to do the following: User equipment (UE).

55. The UE according to claim 54, wherein the reporting period is comprised of a cycle comprising one or more slots.

56. The UE according to claim 54, wherein the reporting period occupies the entire bandwidth of the resource pool configured for the side link.

57. The memory and the one or more processors are further: Identifying the reporting period based at least in part on the fact that the starting slot of the reporting period is adjacent to the slot in which the sidelink communication transmission has been completed. The UE according to claim 54, which is for the purpose of

58. The memory and the one or more processors are further: Identifying the reporting period is at least partially based on the fact that the reporting period occurs for at least a threshold number of slots after the slot in which the sidelink communication transmission is completed. The UE according to claim 54, which is for the purpose of

59. When the memory and the one or more processors receive the one or more feedback communications within the reporting period, One or more symbols included in the reporting period receive the one or more feedback communications. The UE according to claim 54, which is for the purpose of

60. The one or more symbols mentioned above are adjacent symbols, The aforementioned reporting period is, A first transmit / receive turnaround symbol adjacent to a first symbol among the one or more symbols, A second transmit / receive turnaround symbol adjacent to a second symbol among the one or more symbols mentioned above, The UE according to claim 59, including the UE described in claim 59.

61. The memory and the one or more processors are further: Identify the reporting period based at least in part on the processing capacity of the other UE. The UE according to claim 54, which is for the purpose of

62. The memory and the one or more processors are further: Identify the reporting period based at least in part on the quality of service (QoS) level associated with the side-link communication. The UE according to claim 55, which is for the purpose of

63. The one or more feedback communications are multiplexed together with one or more other feedback communications transmitted by the other UE into one or more symbols included in the reporting period. The reporting period occupies the entire bandwidth of the resource pool configured for the sidelink so that no transmissions other than the one or more feedback communications and the one or more other feedback communications occur in the one or more symbols. The UE according to claim 55.

64. User equipment (UE) for wireless communication, Memory and The memory includes one or more processors coupled to the memory, and the memory and the one or more processors are Transmitting sidelink communication over a sidelink between the aforementioned UE and another UE, On the side link, one or more feedback communications associated with the side link communication are received within a reporting period configured to occupy the entire bandwidth of the resource pool configured for the side link. It is configured to do the following: User equipment (UE).

65. The UE according to claim 64, wherein the reporting period is comprised of a cycle comprising one or more slots.

66. The UE according to claim 64, wherein each of the one or more feedback communications occupies a bandwidth smaller than the total bandwidth.

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