Feedback for sidelink communications

Abstract

To provide feedback for sidelink communications.SOLUTION: Various aspects of the present disclosure generally relate to wireless communications. In some aspects, user equipment (UE) may receive a sidelink communication on a sidelink between the UE and other UE. The UE may transmit, on the sidelink, one or more feedback communications associated with the sidelink communication in a reporting period, which has configurable periodicity and / or is configured to occupy an entire bandwidth of a resource pool configured for the sidelink. Numerous other aspects are provided.SELECTED DRAWING: Figure 4A

Description

Technical Field

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

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

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 that can support 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, Long Term Evolution (LTE). LTE / LTE - Advanced is a set of enhancements to the Universal Mobile Telecommunications System (UMTS) mobile standard published by the 3rd Generation Partnership Project (3GPP (registered trademark)).

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

[0005] The above multi-connection technology has been adopted in various telecommunications standards to provide a common protocol that enables various user equipments to communicate at the urban, national, regional, and global levels. New Radio (NR), which may also be called 5G, is a set of extensions to the LTE mobile standard published by the 3rd Generation Partnership Project (3GPP (registered trademark)). NR is designed to better support mobile broadband Internet access by enhancing spectral efficiency, reducing costs, improving services, utilizing new spectrum, using orthogonal frequency division multiplexing (OFDM) with a cyclic prefix (CP) (CP-OFDM) on the downlink (DL), using CP-OFDM and / or SC-FDM (also known as discrete Fourier transform spread OFDM (DFT-s-OFDM)) on the uplink (UL) to better harmonize with other open standards, and supporting beamforming, multiple input multiple output (MIMO) antenna technology, and carrier aggregation. However, as the demand for mobile broadband access continues to increase, further improvements to LTE technology and NR technology are needed. Preferably, these improvements should be applicable to other multi-connection technologies and telecommunications standards that utilize these technologies.

SUMMARY OF THE INVENTION

MEANS FOR SOLVING THE PROBLEM

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

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

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

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

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

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

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

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

[0014] In some aspects, a method of wireless communication performed by a UE may include transmitting sidelink communication on a sidelink between the UE and another UE. The method may include receiving one or more feedback communications associated with the sidelink communication during a reporting period having a configurable period on the sidelink.

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

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

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

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

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

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

[0021] In some aspects, an apparatus for wireless communication may include means for transmitting sidelink communication on a sidelink between the apparatus and another apparatus. The apparatus may include means for receiving, on the sidelink, one or more feedback communications associated with the sidelink communication during a reporting period configured to occupy the entire bandwidth of a resource pool configured for the sidelink.

[0022] Aspects are generally described herein with reference to the accompanying drawings and the specification, and include methods, apparatuses, systems, computer program products, non-transitory computer-readable media, user equipment, base stations, wireless communication devices, and processing systems as shown by the accompanying drawings and the specification.

[0023] The foregoing has outlined rather broadly the features and technical advantages of examples according to the present disclosure so that the following detailed description may be better understood. Additional features and advantages will be described hereinafter. The disclosed concepts and specific examples may be readily utilized as a basis for modifying or designing other structures for carrying out the same purposes of the present disclosure. Such equivalent constructions do not depart from the scope of the appended claims. The characteristics of the concepts disclosed herein, both their organization and method of operation, together with associated advantages, will be better understood from the following description when considered in connection with the accompanying drawings. Each of the drawings is provided for purposes of illustration and description only, and not as a definition of the limits of the claims.

[0024] To better understand the features of the present disclosure described above in detail, a more detailed description can be made by referring to the aspects shown in the accompanying drawings. However, it should be noted that since the description may admit other equally effective aspects, the accompanying drawings show only some exemplary aspects of the present disclosure and should not be considered as limiting its scope. The same reference numerals in different drawings may identify the same or similar elements. BRIEF DESCRIPTION OF THE DRAWINGS

[0025]

Figure 1

Figure 2

Figure 3

Figure 4A

Figure 4B

Figure 4C

Figure 4D

Figure 5

Figure 6

Figure 7

Figure 8

DETAILED DESCRIPTION OF THE INVENTION

[0026] In some cases, two or more subordinate entities (e.g., UEs) may communicate with each other using sidelink signals. Real-world application examples of such sidelink communication may include public safety, proximity services, relay from UE to network, vehicle-to-everything (V2X) communication, internet of everything (IoE) communication, IoT communication, mission-critical mesh, and / or various other suitable application examples. Generally, sidelink signals may refer to signals communicated from one subordinate entity (e.g., UE1) to another subordinate entity (e.g., UE2) without relaying the communication through a scheduling entity (e.g., UE or BS), although the scheduling entity may be utilized 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 over the sidelink. The UE can transmit the feedback in one or more feedback communications. The one or more feedback communications can be transmitted in one or more feedback reporting symbols included in a frame structure for the sidelink. In some cases, the frame structure for the sidelink can include feedback reporting symbols within each slot in the frame structure. However, the UE does not need to provide feedback in all slots within the frame structure. As a result, there may be unused (and thus wasted) symbols in each slot. These unused symbols may reduce the efficiency of the frame structure as they may be reused for other purposes, for example.

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

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

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

[0031] The reporting period and corresponding feedback resources may be configured across all UEs and thus may be system-wide. Further, the reporting period (e.g., the 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 generate gaps in their transmissions during the reporting period (e.g., the feedback reporting symbols in the reporting period) to reduce or prevent overlap of feedback transmissions with other types of transmissions. Reducing the overlap of feedback transmissions reduces automatic gain control tuning problems and the likelihood of transmissions being corrupted.

[0032] Feedback communication may be transmitted in one or more resource blocks of one or more feedback reporting symbols, based at least in part on when transmission of the corresponding sidelink communication is completed. To enable differentiation of feedback, different transmission frequency division multiplexing (FDM) approaches may be employed, which ensure that there is a deterministic relationship between transmission and the corresponding feedback. There may be different types of feedback, such as hybrid automatic repeat request (HARQ) feedback, channel state information (CSI) feedback, etc. In some aspects, 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 the present disclosure are described in more detail below with reference to the accompanying drawings. However, the present disclosure may be implemented in many different forms and should not be construed as limited to any specific structure or function presented throughout this disclosure. Rather, these aspects are configured so that this disclosure is thorough and complete and fully conveys the scope of the disclosure to those skilled in the art. Based on the teachings herein, it should be understood by those skilled in the art that the scope of the present disclosure includes any aspect of the present disclosure implemented independently of any other aspect of the present disclosure or implemented in combination with any other aspect of the present disclosure. For example, an apparatus may be implemented or a method may be practiced using any number of the aspects described herein. In addition, the scope of the present disclosure includes apparatuses or methods practiced using other structures, functions, or a combination of structures and functions in addition to or other than the various aspects of the disclosure described herein. It should be understood that any aspect of the present disclosure disclosed herein may be implemented by one or more elements of the claims.

[0034] Next, some aspects of a telecommunication system are presented with reference to various devices and techniques. These devices and techniques are described in the following detailed description and are shown 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 as software depends on the specific application example and the design constraints imposed on the overall system.

[0035] In this specification, terms generally related to 3G and / or 4G wireless technologies may be used to describe aspects, but it should be noted that the aspects of the present disclosure may be applicable in other generation-based communication systems such as 5G and later, including NR technology.

[0036] FIG. 1 is a diagram showing a wireless network 100 in which aspects of the present disclosure can be practiced. The network 100 can be an LTE network, a 5G or NR network, etc. The wireless network 100 may include several BSs 110 (shown as BS110a, BS110b, BS110c, and BS110d) and other network entities. A BS is an entity that communicates with user equipment (UE) and may be referred to as a base station, NR BS, Node B, gNB, 5G Node B (NB), access point, transmission and reception point (TRP), etc. Each BS can provide communication coverage to a specific geographical area. In 3GPP (registered trademark), the term "cell" may refer to the coverage area of a BS and / or the BS subsystem serving this coverage area depending on the context in which the term is used.

[0037] The BS may provide communication coverage for macrocells, picocells, femtocells, and / or another type of cell. A macrocell may cover a relatively large geographic area (e.g., several kilometers in radius) and may enable unrestricted access by UEs subscribed to the service. A picocell may cover a relatively small geographic area and may enable unrestricted access by UEs subscribed to the service. A femtocell may cover a relatively small geographic area (e.g., a home) and may enable restricted access by UEs associated with the femtocell (e.g., UEs within a Closed Subscriber Group (CSG)). The BS for a macrocell may be referred to as a macro BS. The BS for a picocell may be referred to as a pico BS. The BS for a femtocell may be referred to as a femto BS or a home BS. In the example shown in FIG. 1, BS110a may be a macro BS for macrocell 102a, BS110b may be a pico BS for picocell 102b, and BS110c may be a femto BS for femtocell 102c. The BS may support one or more (e.g., three) cells. The terms “eNB,” “base station,” “NR BS,” “gNB,” “TRP,” “AP,” “Node B,” “5G NB,” and “cell” may be used interchangeably herein.

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

[0039] Wireless network 100 may also include relay stations. A relay station is an entity that can receive the transmission of data from an upstream station (e.g., a BS or a UE) and send the transmission of that data to a downstream station (e.g., a UE or a BS). A relay station can also be a UE that can relay transmissions for other UEs. In the example shown in FIG. 1, relay station 110d may communicate with macro BS 110a and UE 120d to facilitate communication between BS 110a and UE 120d. Relay stations are sometimes referred to as relay BSs, relay base stations, relays, etc.

[0040] Wireless network 100 may be a heterogeneous network that includes different types of BSs, such as macro BSs, pico BSs, femto BSs, relay BSs, etc. These different types of BSs may have different transmission power levels, different coverage areas, and different impacts on interference in wireless network 100. For example, a macro BS may have a high transmission power level (e.g., 5 - 40 watts), while pico BSs, femto BSs, and relay BSs may have lower transmission power levels (e.g., 0.1 - 2 watts).

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

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

[0043] A UE may also be referred to as an access terminal, a terminal, a mobile station, a subscriber unit, a station, etc. A UE can be a cellular phone (e.g., a smartphone), a personal digital assistant (PDA), a wireless modem, a wireless communication device, a handheld device, a laptop computer, a cordless phone, a wireless local loop (WLL) station, a tablet, a camera, a game device, a netbook, a smartbook, an ultrabook, a medical device or instrument, a biosensor / device, a wearable device (smartwatch, smart clothing, smart glasses, smart wristband, smart jewelry (e.g., smart ring, smart bracelet)), an entertainment device (e.g., a music or video device, or a satellite radio), a vehicle component or sensor, a smart meter / sensor, an industrial manufacturing device, a global positioning system device, or any other suitable device configured to communicate via a wireless or wired medium.

[0044] Some UEs may be regarded as machine type communication (MTC) UEs, or evolved or enhanced machine type communication (eMTC) UEs. MTC UEs and eMTC UEs can communicate with, for example, a base station, another device (e.g., a remote device), or some other entity, including robots, drones, remote devices, sensors, meters, monitors, location tags, etc. A wireless node may provide connectivity to or for a network (e.g., a wide area network such as the Internet or a cellular network) via, for example, a wired or wireless communication link. Some UEs may be regarded as Internet of Things (IoT) devices and / or may be implemented as narrowband Internet of Things (NB-IoT) devices. Some UEs may be regarded as customer premise equipment (CPE). UE 120 may be included inside a housing that houses components of UE 120, such as processor components, memory components, etc.

[0045] Generally, any number of wireless networks may be deployed in a given geographical area. Each wireless network may support a particular RAT and may operate on one or more frequencies. RAT may also be referred to as wireless technology, air interface, etc. Frequency may also be referred to as carrier, frequency channel, etc. Each frequency may support a single RAT in a given geographical area to avoid interference between wireless networks of different RATs. In some cases, an NR or 5G RAT network may be deployed.

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

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

[0048] FIG. 2 shows a block diagram of a design 200 of a base station 110 and a UE 120a and / or a UE 120e, which may be one of the base stations and one of the UEs in FIG. 1. The base station 110 may be equipped with T antennas 234a to 234t, and the UE 120 may be equipped with R antennas 252a to 252r, where generally T≥1 and R≥1.

[0049] At base station 110, transmission processor 220 receives data for one or more UEs from data source 212, selects one or more modulation and coding schemes (MCSs) for each UE based at least in part on channel quality indicators (CQIs) received from the UEs, processes (e.g., encodes and modulates) the data for each UE based at least in part on the MCS selected for the UE, and may provide data symbols to all UEs. Transmission processor 220 may also process system information and control information (e.g., CQI requests, grants, upper layer signaling, etc.) (e.g., for semi-static resource partitioning information (SRPI)) and provide overhead symbols and control symbols. Transmission processor 220 may also generate reference symbols for reference signals (e.g., cell-specific reference signals (CRSs)) and synchronization signals (e.g., primary synchronization signals (PSSs) and secondary synchronization signals (SSSs)). Transmission (TX) multiple-input multiple-output (MIMO) processor 230 may, if 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, etc.) 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 one of T antennas 234a-234t. According to various aspects described in more detail below, the synchronization signals may be generated using location coding to convey additional information.

[0050] In UE120a and / or UE120e, antennas 252a to 252r may receive downlink signals from base station 110 and / or other base stations and receive sidelink signals from another UE120 (for example, UE120a may receive sidelink signals from UE120e and / or vice versa), and respectively provide the received signals to demodulators (DEMOD) 254a to 254r. Each demodulator 254 (for example, 254a to 254r) may adjust the received signal (for example, filtering, amplifying, down-converting, and digitizing) to obtain input samples. Each demodulator 254 may further process the input samples (for example, for OFDM, etc.) to obtain received symbols. The MIMO detector 256 may obtain received symbols from all R demodulators 254a to 254r, and if applicable, perform MIMO detection on the received symbols and provide the detected symbols. The receive processor 258 may process the detected symbols (for example, demodulating and decoding), provide the decoded data for UE120a and / or UE120e to the data sink 260, and provide the decoded control information and system information to the controller / processor 280. The channel processor may identify the reference signal received power (RSRP), received signal strength indicator (RSSI), reference signal received quality (RSRQ), channel quality indicator (CQI), etc. In some aspects, one or more components of UE120a and / or UE120e may be included within the housing.

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

[0052] The controller / processor 240 of the base station 110, the controller / processor 280 of the UE 120a and / or UE 120e, and / or any other component of FIG. 2 may perform one or more techniques associated with sidelink communication, as described in more detail elsewhere in this specification. For example, the controller / processor 240 of the base station 110, the controller / processor 280 of the UE 120a and / or UE 120e, and / or any other component of FIG. 2 may execute or direct the operations of, for example, process 500 of FIG. 5, process 600 of FIG. 6, process 700 of FIG. 7, process 800 of FIG. 8, and / or other processes described herein. Memories 242 and 282 may store data and program code for the base station 110 and the UE 120a and / or UE 120e, respectively. The scheduler 246 may schedule UEs for data transmission on the downlink and / or uplink.

[0053] In some aspects, the UE 120 (e.g., UE 120a and / or UE 120e) may include means for receiving sidelink communication on a sidelink between the UE 120 and another UE 120, and means for transmitting one or more feedback communications associated with the sidelink communication within a reporting period having a configurable period on the sidelink. In some aspects, the UE 120 (e.g., UE 120a and / or UE 120e) may include means for receiving sidelink communication on a sidelink between the UE 120 and another UE 120, and means for transmitting one or more feedback communications associated with the sidelink communication within a reporting period configured to occupy the entire bandwidth of a resource pool configured for the sidelink, etc. on the sidelink. In some aspects, the UE 120 (e.g., UE 120a and / or UE 120e) may include means for transmitting sidelink communication on a sidelink between the UE 120 and another UE 120, and means for receiving one or more feedback communications associated with the sidelink communication within a reporting period having a configurable period on the sidelink. In some aspects, the UE 120 (e.g., UE 120a and / or UE 120e) may include means for transmitting sidelink communication on a sidelink between the UE 120 and another UE 120, and means for receiving one or more feedback communications associated with the sidelink communication within a reporting period configured to occupy the entire bandwidth of a resource pool configured for the sidelink, etc. on the sidelink. Additionally or alternatively, the UE 120 may include means for performing one or more other operations described herein. In some aspects, such means may include the communication manager 140. Additionally or alternatively, such means may include one or more components of the UE 120a and / or UE 120e described with respect to FIG. 2.

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

[0055] FIG. 3 shows an exemplary frame structure 300 for frequency division duplexing (FDD) on a sidelink between UEs in a telecommunication system (e.g., LTE, 5G NR, etc.). The transmission 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 a plurality of subframes having indices from 0 to 2L - 1. Each subframe may include two slots. As an example, each radio frame may be divided into 10 subframes from 0 to 9 and 20 slots having indices from 0 to 19. Each slot may include a plurality of symbol periods, e.g., 7 symbol periods in the case of a normal cyclic prefix or 6 symbol periods in the case of an extended cyclic prefix.

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

[0057] Several techniques are described herein with respect to frames, sub - frames, slots, etc., but these techniques may equally apply to other types of wireless communication structures that may be referred to using terms other than "frame", "sub - frame", "slot", etc. in 5G NR. In some aspects, a wireless communication structure may refer to a periodic time - bounded communication unit defined by a wireless communication standard and / or protocol.

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

[0059] A wireless network may support hybrid automatic repeat request (HARQ) for data transmission on the downlink and uplink. In the case of 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 some other end - condition is met. In the case of synchronous HARQ, all transmissions of a packet may be sent in sub - frames of a single interleaving. In the case of asynchronous HARQ, each transmission of a packet may be sent in any sub - frame.

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

[0061] In some aspects, 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 slot 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 amount of the w slots included in the transmission period can be configured by a BS included in the wireless network, a network function device included in the wireless network, a network operator of the wireless network, etc. For example, the amount of the w slots may be configured for the entire wireless network, for a specific UE, for a specific set of UEs, etc. In some aspects, the transmission period may include a single slot (e.g., w = 1 slot). In some aspects, the transmission period may be a multi-slot transmission period including multiple slots (e.g., w>1 slots).

[0062] In some aspects, 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 slot x-1). The amount of the x slots included in the feedback reporting period can be configured by a BS included in the wireless network, a network function device included in the wireless network, a network operator of the wireless network, etc. For example, the amount of the x slots may be configured for the entire wireless network, for a specific UE, for a specific set of UEs, etc. In some aspects, x may be the same amount of slots as w. In some aspects, x and w may be different amounts of slots.

[0063] In some aspects, the feedback reporting period may have a single slot period (e.g., x = 1 slot). In some aspects, the feedback reporting period may have a multi-slot period. In this case, the feedback reporting period can have a length of x slots, where x > 1 slot, and as a result, each feedback reporting period may include one feedback reporting resource that occurs every x slots. UE120a and / or UE120e may transmit one or more feedback communications including feedback for all or a subset of the sidelink communications that complete transmission within the corresponding transmission period in the feedback reporting resource within the feedback reporting period. In some aspects, the 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, the feedback communications may be time-division multiplexed, frequency-division multiplexed, etc. in the feedback reporting resource within the feedback reporting period.

[0064] In some aspects, the transmission period and the corresponding feedback reporting period may be arranged in an adjacent set of slots within the frame structure. For example, the transmission period can include a first set of three consecutive slots, and the corresponding feedback reporting period can include a second set of three consecutive slots that start immediately after the completion of the first set of three consecutive slots. In some aspects, 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 of FIG. 4A, the transmission period can include a first set of w consecutive slots, and the corresponding feedback reporting period can include a set of x consecutive slots, and the set of w slots and the set of x slots can be separated by a plurality of intervening slots.

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

[0066] In some aspects, z turn-around symbols may be located adjacent to the y feedback reporting symbols. For example, one or more turn-around symbols may be located before the y feedback reporting symbols, and one or more turn-around symbols may be located after the y feedback reporting symbols. In this way, when a UE that should transmit one or more feedback communications is receiving sidelink communications in a slot that includes the y feedback reporting symbols, the z turn-around symbols provide the UE with a timing buffer to transition from the receive mode to the transition mode to transmit one or more communications and then return to the receive mode to continue receiving sidelink communications. Turn-around symbols may also be referred to as transmit-receive symbols, transmit-receive times, transmit-receive turn-around symbols, etc.

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

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

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

[0070] In some aspects, different feedback transmission periods may be configured for the transmission of different feedback communication types or different combinations of feedback communication types. In this way, the period for transmitting a particular feedback communication type may be different from the period for transmitting another feedback communication type. For example, a subset of the feedback reporting period may be configured for transmitting HARQ communication, and another subset of the feedback reporting period may be configured for transmitting HARQ communication and CSI feedback communication. Thereby, the period for transmitting HARQ communication may be shorter compared to the period for transmitting HARQ communication and CSI feedback communication.

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

[0072] Figures 4B through 4D illustrate examples of UE 120a and UE 120e that perform sidelink communication based at least in part on the frame structure (or a similar frame structure) 400 shown in Figure 4A. As indicated by reference numeral 402 in Figure 4B and as shown by Figure 4C, UE 120a may receive sidelink communication from UE 120e during a transmission period on the sidelink. The sidelink communication may include physical sidelink shared channel (PSSCH) communication, physical sidelink control channel (PSCCH) communication, or another type of sidelink communication. As indicated by reference numeral 404 in Figure 4B, UE 120a may receive the sidelink communication and may transmit one or more feedback communications associated with the sidelink communication to UE 120e. UE 120a may transmit one or more feedback communications on the PSFCH of the sidelink during a feedback reporting period associated with the transmission period. In particular, UE 120 may transmit one or more feedback communications on a feedback reporting resource within the feedback reporting period.

[0073] In some aspects, the feedback reporting period may have a single-slot period (in which case the feedback reporting resource may occur every slot), or a multi-slot period (in which case the feedback reporting resource may occur every two or more slots). In some aspects, the feedback reporting period may have a configurable period such that the feedback reporting resource can be switched between occurring every 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 aspects, 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 control element (MAC-CE) signaling or radio resource control (RRC) signaling). Thus, UE120a may identify the period of the feedback reporting period based at least in part on the signaling received from the base station. The signaling can identify the period of the reporting period, can identify the time domain resource that the feedback reporting period identifies, can identify the location of the feedback reporting resource within the feedback reporting period (e.g., can identify the slot (which can be the first slot, the last slot, or another slot) within the feedback reporting period in which the feedback reporting resource is included), can identify the location of the feedback reporting resource within the slot in which the feedback reporting resource is included, etc. In this way, UE120a may identify the feedback reporting period and / or the feedback reporting resource within the feedback reporting period based at least in part on the signaling received from the base station.

[0074] Furthermore, as shown in FIGS. 4C and 4D, the feedback reporting resources during the feedback reporting period may be configured to occupy the entire bandwidth of the resource pool configured for sidelink. The resource pool configured for sidelink may be a bandwidth portion configured for sidelink and may include a subset of frequency domain resources (e.g., subcarriers, component carriers, subchannels, resource blocks, etc.) included in the entire frequency bandwidth allocated to UE120a and / or UE120e. In this case, the resource pool configured for sidelink can include fewer frequency resources than the frequency resources available for the access link of UE120a and / or UE120e, and as a result, the resource pool configured for sidelink has a narrower frequency bandwidth with respect to the access link. As an example, if the resource pool configured for sidelink spans 100 resource blocks in bandwidth, the feedback reporting resources may be configured to span the entire 100 resource blocks. In this way, the entire bandwidth of the resource pool configured for sidelink is scheduled for feedback transmission in the feedback reporting resources, and other types of transmissions are prevented from occurring in the feedback reporting resources.

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

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

[0077] In some aspects, UE120e may identify a particular feedback reporting period from among a plurality of feedback reporting periods configured for sidelink as the reporting period that occurs after the transmission period in which the sidelink communication was received by at least a threshold amount of slots. For example, as shown in FIG. 4D, when UE120e transmits feedback for sidelink communication 5, UE120e may identify the reporting period based at least in part on the start slot of the reporting period being at least a threshold amount of slots (e.g., one or more slots) after the slot in which the transmission of sidelink communication 5 was completed, or based at least in part on the start slot of the reporting period being at least a threshold amount of slots (e.g., one or more slots) after the end slot of the transmission period in which the transmission of sidelink communication 5 was completed.

[0078] In some aspects, UE120e may identify a particular feedback reporting period from among a plurality of feedback reporting periods configured for sidelink, based at least in part on various factors. In some aspects, UE120e may identify a particular feedback reporting period based at least in part on the processing capabilities of UE120e. For example, if 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, UE120e can transmit one or more feedback communications within the next scheduled feedback reporting period. Otherwise, UE120e can transmit one or more feedback communications within a subsequent feedback reporting period (e.g., a feedback reporting period occurring at least M slot offsets after the transmission period ends, where M is greater than or equal to the processing capabilities of UE120e within a slot) when it is ready to transmit one or more feedback communications.

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

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

[0081] As shown above, FIGS. 4A and 4B are given as an example. Other examples may be different from those described with respect to FIGS. 4A and 4B.

[0082] FIG. 5 is a diagram illustrating an exemplary process 500, such as may be performed by a UE, according to various aspects of the present disclosure. The exemplary process 500 is an example of operations performed by a UE (such as UE120, UE120a, UE120e, etc.) related to feedback for sidelink communication.

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

[0084] As further shown in FIG. 5, in some aspects, process 500 may include transmitting, on a sidelink, one or more feedback communications associated with the sidelink communication during a report period having a configurable period (block 520). For example, a UE may transmit, on a sidelink, one or more feedback communications associated with the sidelink communication during a report period having a configurable period, as described above (e.g., using receive processor 258, transmit processor 264, controller / processor 280, memory 282, etc.).

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

[0086] In a first aspect, the report period is configured as a period including one or more slots. In a second aspect, alone or in combination with the first aspect, process 500 includes identifying the report period based at least in part on the start slot of the report period being adjacent to the slot in which transmission of the sidelink communication was completed. In a third aspect, alone or in combination with one or more of the first and second aspects, process 500 includes identifying the report period based at least in part on the report period occurring after the slot in which transmission of the sidelink communication was completed by at least a threshold amount of slots.

[0087] In a fourth aspect, transmitting one or more feedback communications during a reporting period, alone or in combination with one or more of the first to third aspects, includes transmitting one or more feedback communications using one or more symbols included in the reporting period. In a fifth aspect, 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, alone or in combination with one or more of the first to fourth aspects.

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

[0089] In a ninth aspect, transmitting one or more feedback communications during a reporting period, 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 a tenth aspect, one or more feedback communications, alone or in combination with one or more of the first to ninth aspects, include at least one of HARQ communications transmitted on a PSFCH, CSI feedback communications transmitted on another PSFCH, or a combination of HARQ communications transmitted on a PSFCH and CSI feedback communications transmitted on another PSFCH.

[0090] In an eleventh aspect, one or more feedback communications, alone or in combination with one or more of the first to tenth aspects, are multiplexed on one or more symbols included in a reporting period together with one or more other feedback communications transmitted by another UE, and the reporting period occupies the entire bandwidth of a resource pool configured for 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 a twelfth aspect, one or more feedback communications, alone or in combination with one or more of the first to eleventh aspects, include HARQ communications transmitted on a PSFCH and CSI feedback communications transmitted on another PSFCH, and the HARQ communications and the CSI feedback communications are time-division multiplexed during the reporting period. In a thirteenth aspect, one or more feedback communications, alone or in combination with one or more of the first to twelfth aspects, include HARQ communications transmitted on a PSFCH and CSI feedback communications transmitted on another PSFCH, and the HARQ communications and the CSI feedback communications are frequency-division multiplexed during the reporting period.

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

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

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

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

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

[0097] FIG. 6 is a diagram illustrating an exemplary process 600, such as may be performed by a UE, according to various aspects of the present disclosure. The exemplary process 600 is an example of operations performed by a UE (e.g., UE 120, UE 120a, UE 120e, etc.) related to feedback for sidelink communication.

[0098] As shown in FIG. 6, in some aspects, process 600 may include receiving sidelink communication on a sidelink between a UE and another UE (block 610). For example, a UE may receive sidelink communication on a sidelink between the UE and another UE as described above (e.g., using receive processor 258, transmit processor 264, controller / processor 280, memory 282, etc.).

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

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

[0101] In a first aspect, the reporting period is composed of a period including one or more slots. In a second aspect, each of one or more feedback communications, alone or in combination with the first aspect, occupies a bandwidth smaller than the entire bandwidth. In a third aspect, transmitting one or more feedback communications during the reporting period, alone or in combination with one or more of the first and second aspects, includes transmitting one or more feedback communications in one or more adjacent symbols included in the reporting period.

[0102] FIG. 6 shows exemplary blocks of process 600. In some aspects, however, process 600 may include additional blocks, fewer blocks, different blocks, or blocks arranged differently compared to the blocks illustrated in FIG. 6. Additionally or alternatively, two or more of the blocks of process 600 may be performed in parallel.

[0103] FIG. 7 is a diagram showing an exemplary process 700 performed, for example, by a UE according to various aspects of the present disclosure. Exemplary process 700 is an example of operations performed by a UE (e.g., UE120, UE120a, UE120e, etc.) related to feedback of sidelink communication.

[0104] As shown in FIG. 7, in some aspects, process 700 may include transmitting sidelink communication on a sidelink between the UE and another UE (block 710). For example, the UE may transmit sidelink communication on a sidelink between the UE and another UE as described above (e.g., using a receiving processor 258, a transmitting processor 264, a controller / processor 280, a memory 282, etc.).

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

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

[0107] In a first aspect, the reporting period is configured by a multi-slot period. In a second aspect, alone or in combination with the first aspect, process 700 includes identifying the reporting period based at least in part on the start slot of the reporting period being adjacent to the slot in which transmission of the sidelink communication was completed. In a third aspect, alone or in combination with one or more of the first and second aspects, process 700 includes identifying the reporting period based at least in part on the reporting period occurring after at least a threshold amount of slots after the slot in which transmission of the sidelink communication was completed.

[0108] In a fourth aspect, receiving one or more feedback communications during a reporting period, alone or in combination with one or more of the first to third aspects, includes receiving one or more feedback communications in one or more symbols included in the reporting period. In a fifth aspect, one or more symbols, alone or in combination with one or more of the first to fourth aspects, 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 a sixth aspect, the process 700, alone or in combination with one or more of the first to fifth aspects, includes identifying a reporting period based at least in part on the processing capabilities of another UE. In a seventh aspect, the process 700, alone or in combination with one or more of the first to sixth aspects, includes identifying a reporting period based at least in part on a QoS level associated with sidelink communication.

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

[0111] FIG. 8 is a diagram illustrating an exemplary process 800 performed, for example, by a UE according to various aspects of the present disclosure. The exemplary process 800 is an example of operations performed by a UE (e.g., UE120, UE120a, UE120e, etc.) related to feedback for sidelink communication.

[0112] As shown in FIG. 8, in some aspects, process 800 may include transmitting sidelink communication on a sidelink between a UE and another UE (block 810). For example, a UE may transmit sidelink communication on a sidelink between a UE and another UE (e.g., using receive processor 258, transmit processor 264, controller / processor 280, memory 282, etc.) as described above.

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

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

[0115] In a first aspect, the reporting period is configured as a period including one or more slots. In a second aspect, alone or in combination with the first aspect, each of the one or more feedback communications occupies a bandwidth less than the entire bandwidth. In a third aspect, alone or in combination with one or more of the first and second aspects, receiving one or more feedback communications during the reporting period includes receiving the one or more feedback communications in one or more adjacent symbols included in the reporting period.

[0116] FIG. 8 shows exemplary blocks of process 800, but in some aspects, process 800 may include additional blocks, fewer blocks, different blocks, or differently arranged blocks compared to the blocks illustrated in FIG. 8. Additionally or alternatively, two or more of the blocks of process 800 may be performed in parallel.

[0117] The foregoing disclosure provides illustration and description, and is neither comprehensive nor limiting to the exact forms disclosed. Modifications and variations may be made in light of the foregoing disclosure, or obtained from practice of the aspects.

[0118] As used herein, "component" shall be construed broadly 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 apparent that the systems and / or methods described herein may be implemented in various forms of hardware, firmware, or a combination of hardware and software. The actual specific control hardware or software code used to implement these systems and / or methods does not limit the aspects. Thus, the operation and behavior of the systems and / or methods are described herein without reference to specific software code. It should be understood that the software and hardware may be designed to implement the systems and / or methods based at least in part on the description herein.

[0120] Even if certain combinations of features are recited in the claims and / or disclosed herein, these combinations are not intended to limit the disclosure in various aspects. In fact, many of these features may be combined in ways that are not specifically recited in the claims and / or not disclosed herein. Each of the dependent claims described below may depend directly on only one claim, but the disclosure in various aspects includes each dependent claim combined with any other claim in the claim set. A phrase that refers to "at least one" of a list of items refers to any combination of those items that includes a single member. By way of example, "at least one of a, b, or c" is intended to include a, b, c, a - b, a - c, b - c, and a - b - c, as well as any combination by multiple of the same element (e.g., a - a, a - a - a, a - a - b, a - a - c, a - b - b, a - c - c, b - b, b - b - b, b - b - c, c - c, and c - c - c, or any other order of a, b, and c).

[0121] None of the elements, acts, or instructions used herein should be construed as important or essential unless expressly described as such. Also, the articles "a" and "an" as used herein are intended to include one or more items and may be used interchangeably with "one or more." Further, the terms "set" and "group" as used herein are intended to include one or more items (e.g., related items, unrelated items, combinations of related and unrelated items, etc.) and may be used interchangeably with "one or more." When only one item is intended, the phrase "only one" or similar words are used. Also, the terms "has," "have," "having," etc. as used herein are to be considered non - limiting terms. Further, the phrase "based on" shall mean "at least partially based on" unless otherwise specified.

Description of Reference Numerals

[0122] 100 Wireless Network 102a Macrocell 102b Picocell 102c Femtocell 110 BS 110d Relay Station 120 UE 130 Network Controller 140 Communication Manager 200 Design 212 Data Source 220 Transmission Processor 230 Transmit (TX) Multiple-Input Multiple-Output (MIMO) Processor 232a - 232t Modulator (MOD) 234a - 234t Antenna 236 MIMO Detector 238 Reception Processor 239 Data Sink 240 Controller / Processor 242 Memory 244 Communication Unit 246 Scheduler 252a - 252r Antenna 254a - 254r Demodulator (DEMOD) 256 MIMO Detector 258 Reception Processor 260 Data Sink 262 Data Source 264 Transmission Processor 236 MIMO Detector 280 Controller / Processor 282 Memory 290 Controller / Processor 292 Memory 294 Communication Unit 300 Frame Structure 400 Frame Structure 500 Process 600 Process 700 Process 800 Process

Claims

1. A method of wireless communication performed by a user equipment (UE), comprising: receiving sidelink communication on a sidelink between the UE and another UE; and transmitting one or more feedback communications associated with the sidelink communication within a reporting period having a configurable period on the sidelink. A method as described above.

2. The method according to claim 1, wherein the reporting period is configured as a period including one or more slots.

3. The method according to claim 1, further comprising identifying the reporting period based at least in part on that a start slot of the reporting period is adjacent to a slot in which transmission of the sidelink communication is completed. A method as described above.

4. The method according to claim 1, further comprising identifying the reporting period based at least in part on that the reporting period occurs after at least a threshold amount of slots after a slot in which transmission of the sidelink communication is completed. A method as described above.

5. The step of transmitting the one or more feedback communications within the reporting period comprises: transmitting the one or more feedback communications in one or more symbols included in the reporting period. A method as described above.

6. The one or more symbols are adjacent symbols, and the reporting period includes: a first transceiver turnaround symbol adjacent to a first symbol among the one or more symbols; and a second transceiver turnaround symbol adjacent to a second symbol among the one or more symbols. The method according to claim 5.

7. The method according to claim 1, further comprising identifying the reporting period based at least in part on a processing capability of the UE. A method as described above.

8. The method according to claim 1, further comprising identifying the reporting period based at least in part on a quality of service (QoS) level associated with the sidelink communication. A method as described above.

9. The QoS level associated with the sidelink communication is: a priority parameter associated with the sidelink communication; a latency parameter associated with the sidelink communication; or a combination of the priority parameter associated with the sidelink communication and the latency parameter associated with the sidelink communication. ​ The method according to claim 8, at least partially based on

10. The step of transmitting the one or more feedback communications during the reporting period comprises the step of transmitting the one or more feedback communications on a feedback reporting resource included in the reporting period The method according to claim 1.

11. The one or more feedback communications include at least one of hybrid automatic repeat request (HARQ) communications transmitted on a physical sidelink feedback channel (PSFCH), channel state information (CSI) feedback communications transmitted on another PSFCH, or a combination of the HARQ communications transmitted on the PSFCH and the CSI feedback communications transmitted on the another PSFCH The method according to claim 1.

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

13. The one or more feedback communications include hybrid automatic repeat request (HARQ) communications transmitted on a physical sidelink feedback channel (PSFCH), and channel state information (CSI) feedback communications transmitted on another PSFCH and the HARQ communications and the CSI feedback communications are time-division multiplexed during the reporting period. The method according to claim 1.

14. The one or more feedback communications include hybrid automatic repeat request (HARQ) communications transmitted on a physical sidelink feedback channel (PSFCH), and channel state information (CSI) feedback communications transmitted on another PSFCH and the HARQ communications and the CSI feedback communications are frequency-division multiplexed during the reporting period. The method according to claim 1.

15. The one or more feedback communications Hybrid Automatic Repeat reQuest (HARQ) communication transmitted on a Physical SideLink Feedback Channel (PSFCH), and Channel State Information (CSI) feedback communication transmitted on another PSFCH The method according to claim 1, comprising.

16. The step of identifying the reporting period, The period of one or more slots in a plurality of reporting periods for transmitting HARQ communication, and The period of one or more slots in the plurality of reporting periods for transmitting CSI feedback communication The step of identifying the reporting period based at least in part on The method according to claim 15, further comprising.

17. The one or more feedback communications are Hybrid Automatic Repeat reQuest (HARQ) communication transmitted on a Physical SideLink Feedback Channel (PSFCH) The method according to claim 1, comprising.

18. In another reporting period, on another PSFCH, the step of transmitting Channel State Information (CSI) feedback communication associated with the sidelink communication The method according to claim 17, further comprising.

19. The step of receiving the sidelink communication is The step of receiving a plurality of sidelink communications transmitted during a transmission period on the sidelink The method according to claim 1, comprising.

20. The step of transmitting the one or more feedback communications is During the reporting period, for the plurality of sidelink communications, the step of transmitting the one or more feedback communications The method according to claim 19, comprising.

21. The step of transmitting the one or more feedback communications is During the reporting period, for a subset of the plurality of sidelink communications, the step of transmitting the one or more feedback communications The method according to claim 19, comprising.

22. The reporting period is A reporting period that occupies the entire bandwidth of a resource pool configured for the sidelink, A UE-specific reporting period, or A reporting period configured for a set of UEs The method according to claim 1, comprising.

23. The reporting period is included in a plurality of reporting periods configured for the sidelink, the method according to claim 1.

24. The step of transmitting the one or more feedback communications within the reporting period is The step of transmitting the one or more feedback communications on 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 transmission of the sidelink communication is completed The method according to claim 1, comprising **Claim 25** A method of wireless communication performed by a user equipment (UE), comprising Receiving sidelink communication on a sidelink between the UE and another UE Transmitting, on the sidelink, one or more feedback communications associated with the sidelink communication within a reporting period configured to occupy the entire bandwidth of a resource pool configured for the sidelink A method comprising **Claim 26** The method according to claim 25, wherein the reporting period has a multi-slot period **Claim 27** The method according to claim 25, wherein each of the one or more feedback communications occupies a bandwidth smaller than the entire bandwidth **Claim 28** The step of transmitting the one or more feedback communications within the reporting period comprises Transmitting the one or more feedback communications on one or more adjacent symbols included in the reporting period The method according to claim 25, comprising **Claim 29** A user equipment (UE) for wireless communication, comprising A memory One or more processors coupled to the memory, wherein the memory and the one or more processors are configured to Receive sidelink communication on a sidelink between the UE and another UE Transmit, on the sidelink, one or more feedback communications associated with the sidelink communication within a reporting period having a configurable period Are configured to perform A user equipment (UE) **Claim 30** The UE according to claim 29, wherein the reporting period is configured as a period including one or more slots **Claim 31** The UE according to claim 29, wherein the reporting period occupies the entire bandwidth of a resource pool configured for the sidelink **Claim 32** The memory and the one or more processors are further configured to identifying the reporting period based at least in part on the start slot of the reporting period being adjacent to the slot in which the sidelink communication was completed The UE according to claim 29, for that purpose. **Claim 33** The memory and the one or more processors further identifying the reporting period based at least in part on the reporting period occurring in at least a threshold amount of slots after the slot in which the sidelink communication was completed The UE according to claim 29, for that purpose. **Claim 34** When transmitting the one or more feedback communications within the reporting period, the memory and the one or more processors transmit the one or more feedback communications in one or more symbols included in the reporting period The UE according to claim 29, for that purpose. **Claim 35** The one or more symbols are adjacent symbols, and the reporting period a first transmit-receive turnaround symbol adjacent to a first symbol of the one or more symbols, and a second transmit-receive turnaround symbol adjacent to a second symbol of the one or more symbols The UE according to claim 34, including. **Claim 36** The memory and the one or more processors further identifying the reporting period based at least in part on the processing capability of the UE The UE according to claim 29, for that purpose. **Claim 37** The memory and the one or more processors further identifying the reporting period based at least in part on a quality of service (QoS) level associated with the sidelink communication The UE according to claim 29, for that purpose. **Claim 38** The one or more feedback communications are multiplexed in one or more symbols included in the reporting period together with one or more other feedback communications transmitted by the other UE, and the reporting period occupies the entire bandwidth of a 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 in the one or more symbols. The UE according to claim 29. **Claim 39** A user equipment (UE) for wireless communication, comprising a memory, and including one or more processors coupled to the memory, the memory and the one or more processors being receiving sidelink communication on a sidelink between the UE and another UE; transmitting, on the sidelink, one or more feedback communications associated with the sidelink communication during a reporting period that occupies an entire bandwidth of a resource pool configured for the sidelink configured to perform a user equipment (UE). **Claim 40** The UE according to claim 39, wherein the reporting period has a multi-slot period. **Claim 41** The UE according to claim 39, wherein each of the one or more feedback communications occupies a bandwidth smaller than the entire bandwidth. **Claim 42** A method of wireless communication performed by a user equipment (UE), the method comprising: transmitting sidelink communication on a sidelink between the UE and another UE; receiving, on the sidelink, one or more feedback communications associated with the sidelink communication during a reporting period having a configurable period including. **Claim 43** The method according to claim 42, wherein the reporting period is configured as a period including one or more slots. **Claim 44** identifying the reporting period based at least in part on an adjacent relationship between a start slot of the reporting period and a slot in which transmission of the sidelink communication is completed The method according to claim 42, further including. **Claim 45** identifying the reporting period based at least in part on the occurrence of the reporting period after at least a threshold amount of slots after a slot in which transmission of the sidelink communication is completed The method according to claim 42, further including. **Claim 46** The step of receiving the one or more feedback communications during the reporting period includes: receiving the one or more feedback communications in one or more symbols included in the reporting period The method according to claim 42, including. **Claim 47** the one or more symbols are adjacent symbols, the reporting period is a first transceiver turnaround symbol adjacent to a first symbol among the one or more symbols; a second transceiver turnaround symbol adjacent to a second symbol among the one or more symbols The method according to claim 46, comprising

48. The method according to claim 42, further comprising the step of identifying the reporting period based at least in part on the processing capabilities of the other UE

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

50. A method of wireless communication performed by a user equipment (UE), comprising: Transmitting sidelink communication on a sidelink between the UE and another UE; and Receiving one or more feedback communications associated with the sidelink communication within a reporting period configured to occupy an entire bandwidth of a resource pool configured for the sidelink on the sidelink

51. The method according to claim 50, wherein the reporting period is configured as a period including 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 entire bandwidth

53. The step of receiving the one or more feedback communications within the reporting period comprises: Receiving the one or more feedback communications in one or more adjacent symbols included in the reporting period

54. A user equipment (UE) for wireless communication, comprising: A memory; and One or more processors coupled to the memory, the memory and the one or more processors being configured to: Transmit sidelink communication on a sidelink between the UE and another UE; and Receive one or more feedback communications associated with the sidelink communication within a reporting period having a configurable period on the sidelink User equipment (UE)

55. The UE according to claim 54, wherein the reporting period is configured as a period including one or more slots

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

57. The memory and the one or more processors are further configured to: identifying the reporting period based at least in part on the start slot of the reporting period being adjacent to the slot in which the sidelink communication transmission was completed The UE according to claim 54, for which it is.

58. The memory and the one or more processors further identifying the reporting period based at least in part on the reporting period occurring in at least a threshold amount of slots after the slot in which the sidelink communication transmission was completed The UE according to claim 54, for which it is.

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

60. The one or more symbols are adjacent symbols, The reporting period is a first transceiver turnaround symbol adjacent to a first symbol among the one or more symbols, and a second transceiver turnaround symbol adjacent to a second symbol among the one or more symbols The UE according to claim 59, including.

61. The memory and the one or more processors further identifying the reporting period based at least in part on the processing capability of the other UE The UE according to claim 54, for which it is.

62. The memory and the one or more processors further identifying the reporting period based at least in part on the quality of service (QoS) level associated with the sidelink communication The UE according to claim 55, for which it is.

63. The one or more feedback communications are multiplexed into one or more symbols included in the reporting period together with one or more other feedback communications transmitted by the other UE, The reporting period is 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 in the one or more symbols, occupying the entire bandwidth of the resource pool configured for the sidelink. The UE according to claim 55.

64. A user equipment (UE) for wireless communication, a memory, one or more processors coupled to the memory, the memory and the one or more processors being configured to transmit sidelink communication on a sidelink between the UE and another UE, and receive, on the sidelink, one or more feedback communications associated with the sidelink communication during a reporting period configured to occupy an entire bandwidth of a resource pool configured for the sidelink are configured to perform a user equipment (UE). **Claim 65** The UE according to claim 64, wherein the reporting period is configured as a period including one or more slots. **Claim 66** The UE according to claim 64, wherein each of the one or more feedback communications occupies a bandwidth smaller than the entire bandwidth.

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