CN117296408A

CN117296408A - Indication of unavailable resources

Info

Publication number: CN117296408A
Application number: CN202280032310.4A
Authority: CN
Inventors: S·侯赛尼; G·萨基斯; T·V·阮
Original assignee: Qualcomm Inc
Current assignee: Qualcomm Inc
Priority date: 2021-05-07
Filing date: 2022-05-06
Publication date: 2023-12-26

Abstract

Aspects of the present disclosure relate generally to wireless communications. In some aspects, a User Equipment (UE) may send a coordination indication identifying a set of availability statuses for a set of resources, wherein the coordination indication is an explicit indication or an implicit indication. The UE may communicate on a side link or uplink according to the set of availability statuses. Many other aspects are described.

Description

Indication of unavailable resources

Cross Reference to Related Applications

This patent application claims priority from U.S. provisional patent application No. 63/201,675 entitled "INDICATION OF UNAVAILABLE RESOURCES" filed on day 5, month 7, 2021 and U.S. non-provisional patent application No. 17/662,196 entitled "INDICATION OF UNAVAILABLE RESOURCES", filed on day 5, 2022, which are assigned to the assignee of the present application. The disclosure of the prior application is considered to be part of the present patent application and is incorporated by reference into the present patent application.

Technical Field

Aspects of the present disclosure relate generally to techniques and apparatuses for wireless communication and for indication of unavailable resources.

Background

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 employ multiple-access techniques capable of supporting communication with multiple users by sharing available system resources (e.g., bandwidth, transmit power, etc.). Examples of such multiple-access techniques include Code Division Multiple Access (CDMA) systems, time Division Multiple Access (TDMA) systems, frequency Division Multiple Access (FDMA) systems, orthogonal Frequency Division Multiple Access (OFDMA) systems, single carrier frequency division multiple access (SC-FDMA) systems, time division synchronous code division multiple access (TD-SCDMA) systems, and Long Term Evolution (LTE). LTE/LTE-advanced is a set of enhancements to the Universal Mobile Telecommunications System (UMTS) mobile standard promulgated by the third generation partnership project (3 GPP).

A wireless network may include one or more base stations that support communication for a User Equipment (UE) or multiple UEs. The UE may communicate with the base station via downlink and uplink communications. "downlink" (or "DL") refers to the communication link from a base station to a UE, and "uplink" (or "UL") refers to the communication link from a UE to a base station.

The multiple access techniques described above have been employed in various telecommunications standards to provide a common protocol that enables different UEs to communicate at a municipal, national, regional, and/or global level. The New Radio (NR), which may be referred to as 5G, is a set of enhancements to the LTE mobile standard promulgated by 3 GPP. NR is designed to better integrate with other open standards by improving spectral efficiency, reducing costs, improving services, utilizing new spectrum, and using Orthogonal Frequency Division Multiplexing (OFDM) with Cyclic Prefix (CP) on the downlink (CP-OFDM), CP-OFDM and/or single carrier frequency division multiplexing (SC-FDM) on the uplink (also known as discrete fourier transform spread OFDM (DFT-s-OFDM)), and support beamforming, multiple Input Multiple Output (MIMO) antenna technology, and carrier aggregation. As the demand for mobile broadband access continues to increase, further improvements in LTE, NR and other radio access technologies remain useful.

Disclosure of Invention

In some aspects, a User Equipment (UE) for wireless communication includes a memory and one or more processors coupled to the memory, the one or more processors configured to: transmitting a coordination indication identifying a set of availability states of a set of resources, wherein the coordination indication is an explicit indication or an implicit indication; and communicating on a side link or uplink according to the set of availability statuses.

In some aspects, a UE for wireless communication includes a memory and one or more processors coupled to the memory, the one or more processors configured to: receiving a coordination indication identifying a set of availability states of a set of resources, wherein the coordination indication is an explicit indication or an implicit indication; and transmitting on the side link in a resource selected according to the set of availability statuses.

In some aspects, a method of wireless communication performed by a UE includes: transmitting a coordination indication identifying a set of availability states of a set of resources, wherein the coordination indication is an explicit indication or an implicit indication; and communicating on a side link or uplink according to the set of availability statuses.

In some aspects, a method of wireless communication performed by a UE includes: receiving a coordination indication identifying a set of availability states of a set of resources, wherein the coordination indication is an explicit indication or an implicit indication; and transmitting on the side link in a resource selected according to the set of availability statuses.

In some aspects, a non-transitory computer-readable medium storing a set of instructions for wireless communication includes one or more instructions that, when executed by one or more processors of a UE, cause the UE to: transmitting a coordination indication identifying a set of availability states of a set of resources, wherein the coordination indication is an explicit indication or an implicit indication; and communicating on a side link or uplink according to the set of availability statuses.

In some aspects, a non-transitory computer-readable medium storing a set of instructions for wireless communication includes one or more instructions that, when executed by one or more processors of a UE, cause the UE to: receiving a coordination indication identifying a set of availability states of a set of resources, wherein the coordination indication is an explicit indication or an implicit indication; and transmitting on the side link in a resource selected according to the set of availability statuses.

In some aspects, an apparatus for wireless communication comprises: means for sending a coordination indication identifying a set of availability statuses of a set of resources, wherein the coordination indication is an explicit indication or an implicit indication; and means for communicating on a side link or uplink in accordance with the set of availability statuses.

In some aspects, an apparatus for wireless communication comprises: means for receiving a coordination indication identifying a set of availability statuses of a set of resources, wherein the coordination indication is an explicit indication or an implicit indication; and means for transmitting on the side link in a resource selected according to the set of availability statuses.

Aspects generally include a method, apparatus, system, computer program product, non-transitory computer readable medium, user equipment, base station, network node, network entity, wireless communication device, and/or processing system substantially as described herein with reference to and as illustrated in the accompanying drawings and description.

The foregoing has outlined rather broadly the features and technical advantages of examples in accordance with the present disclosure in order that the detailed description that follows may be better understood. Additional features and advantages will be described below. 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 features of the concepts disclosed herein, both as to their organization and method of operation, together with the associated advantages will be better understood from the following description when considered in connection with the accompanying figures. Each of the figures is provided for the purpose of illustration and description, and is not intended as a definition of the limits of the claims.

While aspects are described in this disclosure by way of illustration of some examples, those skilled in the art will appreciate that these aspects may be implemented in many different arrangements and scenarios. The techniques described herein may be implemented using different platform types, devices, systems, shapes, sizes, and/or packaging arrangements. For example, some aspects may be implemented via integrated chip embodiments or other non-module component based devices (e.g., end user devices, vehicles, communications devices, computing devices, industrial equipment, retail/purchasing devices, medical devices, and/or artificial intelligence devices). Aspects may be implemented in chip-level components, modular components, non-chip-level components, device-level components, and/or system-level components. Devices incorporating the described aspects and features may include additional components and features for implementation and practice of the claimed and described aspects. For example, the transmission and reception of wireless signals may include one or more components for analog and digital purposes (e.g., hardware components including antennas, radio Frequency (RF) chains, power amplifiers, modulators, buffers, processors, interleavers, adders, and/or summers). Aspects described herein are intended to be practiced in a variety of devices, components, systems, distributed arrangements, and/or end user devices of a variety of different sizes, shapes, and configurations.

Drawings

So that the manner in which the above recited features of the present disclosure can be understood in detail, a more particular description of the invention, briefly summarized above, may be had by reference to aspects, some of which are illustrated in the appended drawings. It is to be noted, however, that the appended drawings illustrate only certain typical aspects of this disclosure and are therefore not to be considered limiting of its scope, for the description may admit to other equally effective aspects. The same reference numbers in different drawings may identify the same or similar elements.

Fig. 1 is a diagram illustrating an example of a wireless network according to the present disclosure.

Fig. 2 is a diagram illustrating an example in which a base station is in communication with a User Equipment (UE) in a wireless network according to the present disclosure.

Fig. 3 is a diagram illustrating an example of side link communication according to the present disclosure.

Fig. 4 is a diagram illustrating an example of side link communication and access link communication according to the present disclosure.

Fig. 5 is a diagram illustrating an example of coordination signaling according to the present disclosure.

Fig. 6 is a diagram illustrating an example of side chain resource reservation according to the present disclosure.

Fig. 7 is a diagram illustrating an example associated with an indication of unavailable resources according to the present disclosure.

Fig. 8-9 are diagrams illustrating example processes associated with an indication of unavailable resources according to this disclosure.

Fig. 10 is a block diagram of an example apparatus for wireless communication according to the present disclosure.

Detailed Description

Various aspects of the disclosure are described more fully hereinafter with reference to the accompanying drawings. This disclosure may, however, be embodied 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 provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art. It will be appreciated by those skilled in the art that the scope of the present disclosure is intended to cover any aspect of the present disclosure disclosed herein, whether implemented independently of or in combination with any other aspect of the present disclosure. For example, an apparatus may be implemented or a method practiced using any number of the aspects set forth herein. In addition, the scope of the present disclosure is intended to cover such an apparatus or method that is practiced using other structure, functionality, or structure and functionality in addition to or other than the aspects of the present disclosure set forth herein. It should be understood that any aspect of the disclosure disclosed herein may be embodied by one or more elements of the claims.

Aspects of a telecommunications system will now be presented with reference to various apparatus and techniques. These devices and techniques will be described in the following detailed description and are illustrated in the figures by various blocks, modules, components, circuits, steps, processes, algorithms, etc. (collectively referred to as "elements"). These elements may be implemented using hardware, software, or a combination thereof. Whether such elements are implemented as hardware or software depends upon the particular application and design constraints imposed on the overall system.

Although aspects may be described herein using terms commonly associated with 5G or New Radio (NR) Radio Access Technologies (RATs), aspects of the present disclosure may be applied to other RATs, e.g., 3G RAT, 4G RAT, and/or 5G later (e.g., 6G) RAT.

Fig. 1 is a diagram illustrating an example of a wireless network 100 according to the present disclosure. The wireless network 100 may be or include elements of a 5G (e.g., NR) network and/or a 4G (e.g., long Term Evolution (LTE)) network, among other examples. Wireless network 100 may include one or more base stations 110 (shown as BS110a, BS110b, BS110c, and BS110 d), user Equipment (UE) 120 or multiple UEs 120 (shown as UE 120a, UE 120b, UE 120c, UE 120d, and UE 120 e), and/or other network entities. Base station 110 is the entity in communication with UE 120. Base stations 110 (sometimes referred to as BSs) may include, for example, NR base stations, LTE base stations, node BS, enbs (e.g., in 4G), gnbs (e.g., in 5G), access points, and/or transmit-receive points (TRPs). Each base station 110 may provide communication coverage for a particular geographic area. In the third generation partnership project (3 GPP), the term "cell" can refer to a coverage area of a base station 110 and/or a base station subsystem serving the coverage area, depending on the context in which the term is used.

The base station 110 may provide communication coverage for a macrocell, a picocell, a femtocell, and/or another type of cell. A macro cell may cover a relatively large geographic area (e.g., an area with a radius of several kilometers) and may allow unrestricted access by UEs 120 with service subscription. The pico cell may cover a relatively small geographic area and may allow unrestricted access by UEs 120 with service subscription. A femto cell may cover a relatively small geographic area (e.g., a home) and may allow restricted access by UEs 120 having an association with the femto cell (e.g., UEs 120 in a Closed Subscriber Group (CSG)). The base station 110 for a macro cell may be referred to as a macro base station. The base station 110 for a pico cell may be referred to as a pico base station. The base station 110 for a femto cell may be referred to as a femto base station or a home base station. In the example shown in fig. 1, BS110a may be a macro base station for macro cell 102a, BS110b may be a pico base station for pico cell 102b, and BS110c may be a femto base station for femto cell 102 c. A base station may support one or more (e.g., three) cells.

In some examples, the cells may not necessarily be stationary, and the geographic area of the cells may move according to the location of the moving base station 110 (e.g., a mobile base station). In some examples, base stations 110 may be interconnected with each other and/or to one or more other base stations 110 or network nodes (not shown) in wireless network 100 through various types of backhaul interfaces, such as direct physical connections or virtual networks, using any suitable transmission network.

The wireless network 100 may include one or more relay stations. A relay station is an entity that may receive a transmission of data from an upstream station (e.g., base station 110 or UE 120) and send a transmission of data to a downstream station (e.g., UE 120 or base station 110). The relay station may be a UE 120 capable of relaying transmissions for other UEs 120. In the example shown in fig. 1, BS110d (e.g., a relay base station) may communicate with BS110a (e.g., a macro base station) and UE 120d in order to facilitate communications between BS110a and UE 120 d. The base station 110 relaying communications may be referred to as a relay station, a relay base station, a repeater, etc.

The wireless network 100 may be a heterogeneous network that includes different types of base stations 110, such as macro base stations, pico base stations, femto base stations, relay base stations, and so on. These different types of base stations 110 may have different transmit power levels, different coverage areas, and/or different effects on interference in the wireless network 100. For example, macro base stations may have a high transmit power level (e.g., 5 to 40 watts), while pico base stations, femto base stations, and relay base stations may have a lower transmit power level (e.g., 0.1 to 2 watts).

The network controller 130 may be coupled to or in communication with a set of base stations 110 and may provide coordination and control for these base stations 110. The network controller 130 may communicate with the base stations 110 via backhaul communication links. Base stations 110 may communicate with each other directly or indirectly via wireless or wired backhaul communication links.

UEs 120 may be dispersed throughout wireless network 100, and each UE 120 may be stationary or mobile. UE 120 may include, for example, an access terminal, a mobile station, and/or a subscriber unit. UE 120 may be a cellular telephone (e.g., a smart phone), 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 computer, a camera, a gaming device, a netbook, a smartbook, a superbook, a medical device, a biometric device, a wearable device (e.g., a smart watch, smart clothing, smart glasses, a smart wristband, smart jewelry (e.g., a smart ring or smart bracelet)), an entertainment device (e.g., a music device, a video device, and/or a satellite radio), a vehicle component or sensor, a smart meter/sensor, industrial manufacturing equipment, a global positioning system device, and/or any other suitable device configured to communicate via wireless.

Some UEs 120 may be considered Machine Type Communication (MTC) or evolved or enhanced machine type communication (eMTC) UEs. MTC UEs and/or eMTC UEs may include, for example, robots, drones, remote devices, sensors, meters, monitors, and/or location tags, which may communicate with a base station, another device (e.g., a remote device), or some other entity. Some UEs 120 may be considered internet of things (IoT) devices and/or may be implemented as NB-IoT (narrowband IoT) devices. Some UEs 120 may be considered customer premises equipment. UE 120 may be included within a housing that houses components (e.g., processor components and/or memory components) of UE 120. In some examples, the processor component and the memory component may be coupled together. For example, a processor component (e.g., one or more processors) and a memory component (e.g., memory) may be operably coupled, communicatively coupled, electronically coupled, and/or electrically coupled.

In general, any number of wireless networks 100 may be deployed in a given geographic area. Each wireless network 100 may support a particular RAT and may operate on one or more frequencies. The RAT may be referred to as a radio technology, an air interface, etc. The frequencies may be referred to as carriers, frequency channels, etc. Each frequency may support a single RAT in a given geographical area in order to avoid interference between wireless networks of different RATs. In some cases, NR or 5G RAT networks may be deployed.

In some examples, two or more UEs 120 (e.g., shown as UE 120a and UE 120 e) may communicate directly using one or more side link channels (e.g., without using base station 110 as an intermediary to communicate with each other). For example, UE 120 may communicate using peer-to-peer (P2P) communication, device-to-device (D2D) communication, a vehicle-to-everything (V2X) protocol (e.g., which may include a vehicle-to-vehicle (V2V) protocol, a vehicle-to-infrastructure (V2I) protocol, or a vehicle-to-pedestrian (V2P) protocol), and/or a mesh network. In such examples, UE 120 may perform scheduling operations, resource selection operations, and/or other operations described elsewhere herein as being performed by base station 110.

Devices of the wireless network 100 may communicate using the electromagnetic spectrum, which may be subdivided into various categories, bands, channels, etc., by frequency or wavelength. For example, devices of wireless network 100 may communicate using one or more operating frequency bands. In 5G NR, two initial operating bands have been identified as frequency range names FR1 (410 MHz-7.125 GHz) and FR2 (24.25 GHz-52.6 GHz). It should be appreciated that although a portion of FR1 is greater than 6GHz, FR1 is commonly referred to in various documents and articles as (interchangeably) "below 6GHz" frequency band. With respect to FR2, similar naming problems sometimes occur, FR2 is commonly (interchangeably) referred to in the literature and articles as the "millimeter wave" band, although in contrast to the Extremely High Frequency (EHF) band (30 GHz-300 GHz) identified by the International Telecommunications Union (ITU) as the "millimeter wave" band.

The frequency between FR1 and FR2 is commonly referred to as the mid-band frequency. Recent 5G NR studies have identified the operating band of these mid-band frequencies as frequency range designation FR3 (7.125 GHz-24.25 GHz). The frequency bands falling within FR3 may inherit FR1 characteristics and/or FR2 characteristics and may therefore effectively extend the characteristics of FR1 and/or FR2 to mid-band frequencies. Furthermore, higher frequency bands are currently being explored to extend 5G NR operation beyond 52.6GHz. For example, three higher operating bands have been identified as frequency range names FR4a or FR4-1 (52.6 GHz-71 GHz), FR4 (52.6 GHz-114.25 GHz) and FR5 (114.25 GHz-300 GHz). Each of these higher frequency bands falls within the EHF frequency band.

In view of the above examples, unless specifically stated otherwise, it should be understood that the term "below 6GHz" and the like, if used herein, may broadly represent frequencies that may be less than 6GHz, may be within FR1, or may include mid-band frequencies. Furthermore, unless specifically stated otherwise, it should be understood that the term "millimeter wave" or the like, if used herein, may broadly refer to frequencies that may include mid-band frequencies, may be within FR2, FR4-a or FR4-1 and/or FR5, or may be within the EHF band. It is contemplated that frequencies included in these operating bands (e.g., FR1, FR2, FR3, FR4-a, FR4-1, and/or FR 5) may be modified, and that the techniques described herein are applicable to those modified frequency ranges.

Deployment of a communication system, such as a 5G NR system, may be arranged in a variety of ways with various components or parts. In a 5G NR system or network, network nodes, network entities, mobility elements of the network, radio Access Network (RAN) nodes, core network nodes, network elements, base stations, or network devices may be implemented in an aggregated or disaggregated architecture. For example, a base station (such as a Node B (NB), evolved NB (eNB), NR Base Station (BS), 5G NB, gndeb (gNB), access Point (AP), TRP, or cell) or one or more units (or one or more components) performing base station functionality may be implemented as an aggregated base station (also referred to as a standalone base station or a monolithic base station) or a disaggregated base station. A "network entity" or "network node" may refer to a disaggregated base station or one or more units of a disaggregated base station, such as one or more Central Units (CUs), one or more Distributed Units (DUs), one or more Radio Units (RUs), or a combination thereof.

The aggregation base station may be configured to utilize a radio protocol stack that is physically or logically integrated within a single RAN node (e.g., within a single device or unit). The deaggregation base station may be configured to utilize a protocol stack that is physically or logically distributed between two or more units (e.g., one or more CUs, one or more DUs, or one or more RUs). In some aspects, a CU may be implemented within a RAN node, and one or more DUs may be co-located with the CU, or alternatively, may be geographically or virtually distributed throughout one or more other RAN nodes. A DU may be implemented to communicate with one or more RUs. Each of the CUs, DUs, and RUs may also be implemented as virtual units (e.g., virtual Central Units (VCUs), virtual Distributed Units (VDUs), or Virtual Radio Units (VRUs)).

Base station type operation or network design may take into account the aggregate nature of the base station functions. For example, deaggregated base stations may be utilized in an Integrated Access Backhaul (IAB) network, an open radio access network (O-RAN such as a network configuration sponsored by the O-RAN alliance), or a virtualized radio access network (vRAN, also referred to as a cloud radio access network (C-RAN)) to facilitate extension of a communication system by separating base station functionality into one or more units that may be deployed separately. Disaggregation base stations may include functionality implemented across two or more units at various physical locations, as well as functionality virtually implemented for at least one unit, which may enable flexibility in network design. Each unit of the deaggregation base station may be configured to communicate with at least one other unit of the deaggregation base station either wired or wireless.

In some aspects, UE120 may include a communication manager 140. As described in more detail elsewhere herein, the communication manager 140 can send a coordination indication identifying a set of availability statuses for a set of resources, wherein the coordination indication is an explicit indication or an implicit indication; and communicating on a side link or uplink according to the set of availability statuses. The communication manager 140 may receive a coordination indication identifying a set of availability statuses of a set of resources, wherein the coordination indication is an explicit indication or an implicit indication; and transmitting on the side link in a resource selected according to the set of availability statuses. Additionally or alternatively, communication manager 140 may perform one or more other operations described herein.

As mentioned above, fig. 1 is provided as an example. Other examples may differ from the examples described with respect to fig. 1.

Fig. 2 is a diagram illustrating an example 200 in which a base station 110 is in communication with a UE120 in a wireless network 100 according to the present disclosure. Base station 110 may be equipped with a set of antennas 234a through 234T, such as T antennas (T.gtoreq.1). UE120 may be equipped with antenna sets 252a through 252R, such as R antennas (r≡1).

At base station 110, transmit processor 220 may receive data intended for UE120 (or a set of UEs 120) from data source 212. Transmit processor 220 may select one or more Modulation and Coding Schemes (MCSs) for UE120 based at least in part on one or more Channel Quality Indicators (CQIs) received from UE 120. Base station 110 may process (e.g., encode and modulate) data for UE120 based at least in part on the MCS selected for UE120 and may provide data symbols for UE 120. Transmit processor 220 may process system information (e.g., for semi-Static Resource Partitioning Information (SRPI)) and control information (e.g., CQI requests, grants, and/or upper layer signaling) and provide overhead symbols and control symbols. The transmit processor 220 may generate reference symbols for reference signals (e.g., cell-specific reference signals (CRS) or demodulation reference signals (DMRS)) and synchronization signals (e.g., primary Synchronization Signals (PSS) or Secondary Synchronization Signals (SSS)). A Transmit (TX) multiple-input multiple-output (MIMO) processor 230 may perform spatial processing (e.g., precoding) on the data symbols, control symbols, overhead symbols, and/or reference symbols, if applicable, and may provide a set of output symbol streams (e.g., T output symbol streams) to a corresponding set of modems 232 (e.g., T modems) (shown as modems 232a through 232T). For example, each output symbol stream may be provided to a modulator component (shown as MOD) of modem 232. Each modem 232 may process a respective output symbol stream (e.g., for OFDM) using a respective modulator component to obtain an output sample stream. Each modem 232 may also process (e.g., convert to analog, amplify, filter, and/or upconvert) the output sample stream using a corresponding modulator component to obtain a downlink signal. Modems 232a through 232T may transmit a set of downlink signals (e.g., T downlink signals) via a corresponding set of antennas 234 (e.g., T antennas) (shown as antennas 234a through 234T).

At UE 120, a set of antennas 252 (shown as antennas 252a through 252R) may receive the downlink signals from base station 110 and/or other base stations 110 and a set of received signals (e.g., R received signals) may be provided to a set of modems 254 (e.g., R modems) (shown as modems 254a through 254R). For example, each received signal may be provided to a demodulator component (shown as DEMOD) of modem 254. Each modem 254 may condition (e.g., filter, amplify, downconvert, and/or digitize) a received signal using a corresponding demodulator component to obtain input samples. Each modem 254 may use a demodulator assembly to further process the input samples (e.g., for OFDM) to obtain received symbols. MIMO detector 256 may obtain the received symbols from modem 254, may perform MIMO detection on the received symbols if applicable, and may provide detected symbols. Receive processor 258 may process (e.g., demodulate and decode) the detected symbols, may provide decoded data for UE 120 to a data sink 260, and may provide decoded control information and system information to controller/processor 280. The term "controller/processor" may refer to one or more controllers, one or more processors, or a combination thereof. The channel processor may determine a Reference Signal Received Power (RSRP) parameter, a Received Signal Strength Indicator (RSSI) parameter, a Reference Signal Received Quality (RSRQ) parameter, and/or a CQI parameter, among other examples. In some examples, one or more components of UE 120 may be included in housing 284.

The network controller 130 may include a communication unit 294, a controller/processor 290, and a memory 292. The network controller 130 may comprise, for example, one or more devices in a core network. The network controller 130 may communicate with the base station 110 via a communication unit 294.

The one or more antennas (e.g., antennas 234a through 234t and/or antennas 252a through 252 r) may include or be included in one or more antenna panels, one or more antenna groups, one or more sets of antenna elements and/or one or more antenna arrays, etc. The antenna panel, antenna group, antenna element set, and/or antenna array may include one or more antenna elements (within a single housing or multiple housings), a set of coplanar antenna elements, a set of non-coplanar antenna elements, and/or one or more antenna elements coupled to one or more transmit and/or receive components (e.g., one or more components of fig. 2).

On the uplink, at UE 120, transmit processor 264 may receive and process data from data source 262 and control information from controller/processor 280 (e.g., for reports including RSRP, RSSI, RSRQ and/or CQI). Transmit processor 264 may generate reference symbols for one or more reference signals. The symbols from transmit processor 264 may be precoded by a TX MIMO processor 266 if applicable, further processed by modem 254 (e.g., for DFT-s-OFDM or CP-OFDM), and transmitted to base station 110. In some examples, modem 254 of UE 120 may include a modulator and a demodulator. In some examples, UE 120 includes a transceiver. The transceiver may include any combination of antennas 252, modems 254, MIMO detector 256, receive processor 258, transmit processor 264, and/or TX MIMO processor 266. The transceiver may be used by a processor (e.g., controller/processor 280) and memory 282 to perform aspects of any of the methods described herein (e.g., with reference to fig. 7-10).

At base station 110, uplink signals from UE 120 and/or other UEs may be received by antennas 234, processed by modems 232 (e.g., the demodulator components of modems 232, shown as DEMODs), detected by MIMO detector 236 (if applicable), and further processed by receive processor 238 to obtain decoded data and control information sent by UE 120. The receive processor 238 may provide the decoded data to a data sink 239 and the decoded control information to a controller/processor 240. The base station 110 may include a communication unit 244 and may communicate with the network controller 130 via the communication unit 244. Base station 110 may include a scheduler 246 to schedule one or more UEs 120 for downlink and/or uplink communications. In some examples, modem 232 of base station 110 may include a modulator and a demodulator. In some examples, base station 110 includes a transceiver. The transceiver may include any combination of antennas 234, modems 232, MIMO detector 236, receive processor 238, transmit processor 220, and/or TX MIMO processor 230. The transceiver may be used by a processor (e.g., controller/processor 240) and memory 242 to perform aspects of any of the methods described herein (e.g., with reference to fig. 7-10).

The controller/processor 240 of the base station 110, the controller/processor 280 of the UE 120, and/or any other component of fig. 2 may perform one or more techniques associated with the indication of unavailable resources, as described in more detail elsewhere herein. For example, controller/processor 240 of base station 110, controller/processor 280 of UE 120, and/or any other component of fig. 2 may perform or direct operations such as process 800 of fig. 8, process 900 of fig. 9, and/or other processes as described herein. Memory 242 and memory 282 may store data and program codes for base station 110 and UE 120, respectively. In some examples, memory 242 and/or memory 282 may include a non-transitory computer-readable medium storing one or more instructions (e.g., code and/or program code) for wireless communication. For example, the one or more instructions, when executed by the one or more processors of base station 110 and/or UE 120 (e.g., directly or after compiling, converting, and/or interpreting), may cause the one or more processors, UE 120, and/or base station 110 to perform or direct operations such as process 800 of fig. 8, process 900 of fig. 9, and/or other processes as described herein. In some examples, the execution instructions may include execution instructions, conversion instructions, compilation instructions, and/or interpretation instructions, among other examples.

In some aspects, a UE includes: means for sending a coordination indication identifying a set of availability statuses of a set of resources, wherein the coordination indication is an explicit indication or an implicit indication; and/or means for communicating on a side link or uplink in accordance with the set of availability statuses. The UE includes: means for receiving a coordination indication identifying a set of availability statuses of a set of resources, wherein the coordination indication is an explicit indication or an implicit indication; and/or means for transmitting on a side link in a resource selected according to the set of availability statuses. Means for a UE to perform the operations described herein may include, for example, one or more of the communication manager 140, the antenna 252, the demodulator 254, the MIMO detector 256, the receive processor 258, the transmit processor 264, the TX MIMO processor 266, the modulator 254, the controller/processor 280, or the memory 282.

Although the blocks in fig. 2 are shown as distinct components, the functionality described above with respect to the blocks may be implemented in a single hardware, software, or combined component or in various combinations of components. For example, the functions described with respect to transmit processor 264, receive processor 258, and/or TX MIMO processor 266 may be performed by controller/processor 280 or under the control of controller/processor 280.

As described above, fig. 2 is provided as an example. Other examples may differ from the example described with respect to fig. 2.

Fig. 3 is a diagram illustrating an example 300 of side link communication according to the present disclosure.

As shown in fig. 3, a first UE 305-1 may communicate with a second UE 305-2 (and one or more other UEs 305) via one or more side link channels 310. UEs 305-1 and 305-2 may communicate using one or more side link channels 310 for P2P communication, D2D communication, V2X communication (e.g., which may include V2V communication, V2I communication, and/or V2P communication), wireless Local Area Network (WLAN) communication, bluetooth communication, and/or mesh networking. UE 305 (e.g., UE 305-1 and/or UE 305-2) may be one or more other UEs described elsewhere herein, such as UE 120. One or more side link channels 310 may use a PC5 interface and/or may operate in a high frequency band (e.g., 5.9GHz band). In some other aspects, one or more side link channels 310 may use another form of interface, such as a WiFi interface, a bluetooth interface, or the like. It should be appreciated that the techniques described herein are not limited to NR side link communications (unless explicitly stated otherwise) and may be applied to other forms of communications without a central scheduler. The UE 305 may use Global Navigation Satellite System (GNSS) timing to synchronize the timing of Transmission Time Intervals (TTIs), e.g., frames, subframes, slots, or symbols.

As further shown in fig. 3, the one or more side link channels 310 may include a physical side link control channel (PSCCH) 315, a physical side link shared channel (PSSCH) 320, and/or a physical side link feedback channel (PSFCH) 325.PSCCH 315 may be used to transmit control information similar to a Physical Downlink Control Channel (PDCCH) and/or a Physical Uplink Control Channel (PUCCH) for cellular communication with base station 110 via an access link or access channel. The PSSCH 320 may be used to transmit data similar to a Physical Downlink Shared Channel (PDSCH) and/or a Physical Uplink Shared Channel (PUSCH) for cellular communication with the base station 110 via an access link or access channel. For example, PSCCH 315 may carry side link control information (SCI) 330, which may indicate various control information for side link communications, such as one or more resources (e.g., time resources, frequency resources, and/or spatial resources), where Transport Blocks (TBs) 335 may be carried on PSSCH 320. TB 335 may include data. The PSFCH 325 may be used to transmit side chain feedback 340, such as hybrid automatic repeat request (HARQ) feedback (e.g., acknowledgement or negative acknowledgement (ACK/NACK) information), transmit Power Control (TPC), and/or Scheduling Request (SR). PSSCH 320 can carry Medium Access Control (MAC) signaling. In some examples, PSSCH 320 or PSCCH 315 may carry Radio Resource Control (RRC) signaling, such as RRC signaling originating from a PC5-RRC protocol entity.

Although shown on PSCCH 315, in some examples SCI 330 may include multiple communications in different phases, such as a first phase SCI (SCI-1) and a second phase SCI (SCI-2). SCI-1 may be transmitted on PSCCH 315. SCI-2 may be transmitted on PSSCH 320. SCI-1 may include, for example, an indication of one or more resources (e.g., time resources, frequency resources, and/or space resources) on PSSCH 320, information for decoding side link communications on the PSSCH, a quality of service (QoS) priority value, a resource reservation period, PSSCH DMRS mode, SCI format of SCI-2, beta offset of SCI-2, number of PSSCH DMRS ports, coordination information such as an indication of non-preferred resources (described elsewhere herein), and/or MCS. SCI-2 may include information associated with data transmission on PSSCH 320, such as HARQ process ID, new Data Indicator (NDI), source identifier, destination identifier, coordination information (e.g., an indication of non-preferred resources (described elsewhere herein)), and/or Channel State Information (CSI) report triggers.

In some examples, one or more side-link channels 310 may use a pool of resources. A resource pool is a set of resources associated with a side link connection for the configuration of communications over the side link connection. The resource pool may be configured with various parameters described elsewhere herein. For example, scheduling assignments (e.g., included in SCI 330) may be sent in subchannels using specific Resource Blocks (RBs) across time. In some examples, the data transmission associated with the scheduling assignment (e.g., on PSSCH 320) may occupy a neighboring RB in the same subframe as the scheduling assignment (e.g., using frequency division multiplexing). In some examples, the scheduling assignment and associated data transmission are not sent on adjacent RBs.

In some examples, the UE 305 may operate using a transmission mode in which resources are selected and/or scheduled to be performed by the UE 305 (e.g., rather than the base station 110). In some examples, the UE 305 may perform resource selection and/or scheduling by sensing channel availability for transmission. For example, the UE 305 may measure RSSI parameters (e.g., sidelink-RSSI (S-RSSI) parameters) associated with each sidelink channel, may measure RSRP parameters (e.g., PSSCH-RSRP parameters) associated with each sidelink channel, and/or may measure RSRQ parameters (e.g., PSSCH-RSRQ parameters) associated with each sidelink channel, and may select a channel for transmission sidelink communication based at least in part on the measurements.

Additionally or alternatively, UE 305 may perform resource selection and/or scheduling using SCI 330 received in PSCCH 315, where SCI 330 may indicate occupied resources and/or channel parameters. Additionally or alternatively, the UE 305 may perform resource selection and/or scheduling by determining Channel Busy Ratios (CBRs) associated with respective side chain channels, which may be used for rate control (e.g., by indicating a maximum number of resource blocks that the UE 305 may use for a particular set of subframes).

In a transmission mode in which the UE 305 performs resource selection and/or scheduling, the UE 305 may generate a side chain grant and may send the grant in the SCI 330. The side-link grant may indicate, for example, one or more parameters (e.g., transmission parameters) to be used for the upcoming side-link transmission, such as one or more resource blocks to be used for the upcoming side-link transmission on the PSSCH 320 (e.g., for TB 335), one or more subframes to be used for the upcoming side-link transmission, and/or an MCS to be used for the upcoming side-link transmission. In some examples, the UE 305 may generate a side chain grant indicating one or more parameters for semi-persistent scheduling (SPS), such as a periodicity of side chain transmissions. Additionally or alternatively, the UE 305 may generate side chain grants for event driven scheduling (such as for on-demand side chain messages).

In some examples, as shown, the first UE 305-1 may send coordination information to the second UE 305-2, such as via PSCCH 315, PSSCH 320, PC5-RRC signaling, and/or MAC signaling. The coordination information may help select resources for side-chain transmissions of the second UE 305-2 (in order to reduce or avoid collisions).

As described above, fig. 3 is provided as an example. Other examples may differ from the example described with respect to fig. 3.

Fig. 4 is a diagram illustrating an example 400 of side link communication and access link communication according to the present disclosure. As mentioned in connection with fig. 3, the techniques described herein are not limited to implementations involving NR side link communications.

As shown in fig. 4, a transmitter (Tx)/receiver (Rx) UE 405 and an Rx/Tx UE 410 may communicate with each other via a side-link, as described above in connection with fig. 3. As further shown, in some side link modes, the network entity 402 may communicate with the Tx/Rx UE 405 via a first access link. Additionally or alternatively, in some sidelink modes, the network entity 402 may communicate with the Rx/Tx UE 410 via a second access link. The Tx/Rx UE 405 and/or the Rx/Tx UE 410 may correspond to one or more UEs described elsewhere herein, such as UE 120 of fig. 1 or UE 305 of fig. 3. Thus, the direct link between UEs 120 (e.g., via a PC5 interface, bluetooth interface, wiFi interface, etc.) may be referred to as a side link, and the direct link between network entity 402 and UEs 120 (e.g., via a Uu interface) may be referred to as an access link. Side link communications may be sent via the side link and access link communications may be sent via the access link. The access link communication may be a downlink communication (from network entity 402 to UE 120) or an uplink communication (from UE 120 to network entity 402).

As described above, fig. 4 is provided as an example. Other examples may differ from the example described with respect to fig. 4.

Fig. 5 is a diagram illustrating an example 500 of coordination signaling according to the present disclosure.

In example 500, a first UE (e.g., UE 120a of fig. 1) exchanges inter-UE coordination signaling with a second UE (e.g., UE 120e of fig. 1). inter-UE coordination signaling may carry coordination information, sometimes referred to as inter-UE coordination information. "inter-UE coordination signaling", "coordination information" and "inter-UE coordination information" are used interchangeably herein. The first UE and the second UE may operate in an in-coverage mode, a partial coverage mode, or an out-of-coverage mode with the network entity. In the in-coverage mode, the first UE and the second UE are covered by a network entity. In the partial coverage mode, one of the first UE and the second UE is covered by the network entity. In the out-of-coverage mode, neither the first UE nor the second UE is covered by the network entity.

The first UE may determine a set of side chain resources available for resource allocation. The first UE may determine the set of side link resources based at least in part on determining that the set of side link resources is to be selected or based at least in part on a request (referred to herein as an inter-UE coordination request) received from a second UE or a network entity. In some examples, the first UE may determine the set of side chain resources based at least in part on a sensing operation that may be performed prior to receiving the inter-UE coordination request or after receiving the inter-UE coordination request.

The first UE may send an indication of the set of available resources to the second UE via inter-UE coordination signaling (shown as an inter-UE coordination message, and in some examples referred to as an inter-UE coordination message or inter-UE coordination information). In some examples, the first UE may send an indication of the set of available resources when operating in side chain resource allocation mode 2. In side link resource allocation mode 2, the resource allocation is handled by the UE (e.g., in side link resource allocation mode 1, the resource allocation is handled by a scheduling entity, such as a network entity, as compared to side link resource allocation mode 1). In some examples, the indication of the set of available resources may identify resources preferred by the first UE for transmission by the second UE. Additionally or alternatively, the indication of the set of available resources may identify resources that are not preferred by the first UE for transmission by the second UE, referred to herein as non-preferred side-chain resources (e.g., the available resources are those other than the non-preferred resources). Additionally or alternatively, inter-UE coordination signaling may indicate a resource conflict (e.g., a conflict), such as when two UEs have reserved the same resource (e.g., and the conflict cannot be detected because the two UEs transmit resource reservation messages on the same resource, and thus do not receive each other's resource reservation messages due to half-duplex constraints).

In some examples, from the perspective of the first UE, the non-preferred side link resources may be in time slots where the first UE is performing transmissions (whether uplink or side link transmissions) and cannot receive due to half-duplex constraints. Additionally or alternatively, the non-preferred sidelink resources may be resources that overlap with resources where the first UE is expected to receive downlink or sidelink transmissions. Additionally or alternatively, the non-preferred side link resources may be resources in periods where the first UE is not able to receive due to the power saving configuration, such as Discontinuous Reception (DRX) cycles.

The second UE may select side link resources for transmission from the second UE based at least in part on the set of available resources indicated by the first UE. As shown, the second UE may consider coordination information when transmitting (e.g., via side link resources indicated as available by the inter-UE coordination message). inter-UE coordination signaling related to resource allocation may reduce collisions between the first UE and the second UE and may reduce power consumption of the first UE and/or the second UE (e.g., fewer retransmissions due to fewer collisions). In some examples described herein, the second UE may select non-preferred resources for communication.

Although fig. 5 shows a single first UE transmitting inter-UE coordination information to a single second UE, in some examples, a single first UE may transmit inter-UE coordination information to multiple UEs to assist those UEs in selecting resources for transmission. Additionally or alternatively, the second UE may receive inter-UE coordination information from the plurality of UEs and may use the information to select resources for transmission (e.g., resources that avoid collision with all or as many as possible of the plurality of UEs).

As described above, fig. 5 is provided as an example. Other examples may differ from the example described with respect to fig. 5.

Fig. 6 is a diagram illustrating an example 600 of side-chain resource reservation according to the present disclosure.

As described above, in some cases, a first UE (e.g., UE 120 a) cannot receive from a second UE (e.g., UE 120 e) on a side link, such as when the first UE is transmitting on the uplink or is ready to transmit on the uplink. In this case, if the priority of the packet being transmitted is less than a threshold priority or if the remaining Packet Delay Budget (PDB) of the packet transmitted by the second UE is greater than a threshold, the first UE may transmit inter-UE coordination information to identify a set of resources through which the first UE cannot receive on the side link. inter-UE coordination information may be applicable to PSCCH, PSSCH, or PSFCH, among other examples. This may enable the second UE to refrain from transmitting the low priority packet. However, when the second UE has a transmission with at least a threshold priority or with a remaining PDB less than the threshold, the first UE prioritizes receiving the transmission from the second UE over the uplink transmission.

As shown in fig. 6, the second UE may transmit the SCI to the first UE. The second UE may send the SCI before an unavailability period (e.g., an unavailability period that the first UE has identified in the inter-UE coordination indication) to reserve side link resources in a resource reservation window and indicate that the second UE is to send communications with relatively high priority in the reserved resources. In this case, the first UE is signaled to receive preferentially on the side link in the particular resource rather than transmit on the uplink, even if the first UE has indicated that the particular resource is not available for side link transmission.

However, the inter-UE coordination indication used by the second UE to determine whether to send the SCI to reserve resources may lack information that enables the second UE to identify whether resources are not available for side link reception, rather than just non-preferred for side link reception. Some aspects described herein provide techniques for indication of unavailable resources. For example, a first UE may send an inter-UE coordination indication identifying resources not available for side link reception, and a second UE may use the inter-UE coordination indication to determine whether to send SCI to cover the unavailability of resources and enable transmission of high priority communications.

As described above, fig. 6 is provided as an example. Other examples may differ from the example described with respect to fig. 6.

Fig. 7 is a diagram illustrating an example 700 associated with an indication of unavailable resources according to the present disclosure. As shown in fig. 7, example 700 includes communication between a first UE 705 and a second UE 710. In some aspects, the first UE 705 and the second UE 710 may correspond to one or more UEs 120 and/or one or more other UEs described herein. In some aspects, UEs 705 and 710 may be included in a wireless network, such as wireless network 100. UEs 705 and 710 may communicate via a wireless side link, which may include a forward link and a reverse link.

As shown in fig. 7 and further illustrated by reference numeral 715, the first UE 705 may transmit a coordination indication. For example, the first UE 705 may send a coordination indication of a set of availability status (e.g., whether resources are available or unavailable for the first UE 705 to receive on a side link) with a set of resources (e.g., a set of time slots). In some aspects, the coordination indication may include an explicit indication of the set of availability statuses. For example, the first UE 705 may send an explicit indication that the first UE 705 is not available for side chain reception on the set of resources based at least in part on the first UE 705 being scheduled for uplink transmission or ready for uplink transmission during the set of resources. Additionally or alternatively, the first UE 705 may send an implicit indication to mark a set of resources as non-preferred based at least in part on the first UE 705 being scheduled or configured for uplink transmission or ready for uplink transmission during the set of resources. In this case, the coordination indication may also include information identifying another set of resources as non-preferred based at least in part on, for example, a sensing procedure performed by the first UE 705 or other coordination information obtained by the first UE 705.

In some aspects, the coordination indication identifies the set of resources as available for uplink communications. For example, the first UE 705 may identify a set of resources scheduled for uplink communications (and wherein the first UE 705 is unable to receive side link communications) and may send a coordination indication to indicate that the set of resources is scheduled for uplink communications. In this case, the second UE 710 may determine that the set of resources is not available for reception by the first UE 705 on the side link based at least in part on the set of resources being available for transmission on the uplink. Additionally or alternatively, the coordination indication identifies the resource set as unavailable for side link communication. For example, the first UE 705 may send a coordination indication to indicate one or more time slots designated as unavailable for side-chain reception by the first UE 705.

In some aspects, the first UE 705 may transmit the coordination indication aperiodically. For example, when the first UE 705 is receiving a dynamic uplink grant of resources for uplink transmission, the first UE 705 may send an aperiodic coordination indication message to indicate resources not available for sidelink reception. Additionally or alternatively, the first UE 705 may periodically send a coordination indication. For example, when the first UE 705 is configured with periodic uplink resources (e.g., via a Configured Grant (CG) -PUSCH), but not always using periodic uplink resources (e.g., when the first UE 705 does not have traffic for uplink transmissions), the first UE 705 may send a periodic coordination indication to indicate whether the first UE 705 is using periodic uplink resources (and is not available for side link reception). In some aspects, the first UE 705 may use activation or deactivation signaling to communicate the coordination indication. For example, when the first UE 705 is configured with periodic and deterministic uplink traffic, the first UE 705 may send signaling (e.g., an activation message) to indicate that the first UE 705 is not available for side link reception on the resource set until the first UE 705 sends signaling (e.g., a deactivation message) of the additional indication.

In some aspects, the first UE 705 may send the coordination indication in a joint message that also includes an indication of preferred or non-preferred resources. For example, the first UE 705 may send a single inter-UE coordination message that identifies the first set of resources as unavailable for side chain reception (e.g., when the first UE 705 is transmitting on the uplink) and the second set of resources as non-preferred for reservation (e.g., when the first UE 705 determines that interference may occur due to the sensing process, for example). Additionally or alternatively, in some cases, the joint message may not be included in the inter-UE coordination message. For example, the first UE 705 may include an indicator of whether the inter-UE coordination message includes an indication of both unavailable resources and non-preferred resources to enable the second UE 710 to accurately interpret the inter-UE coordination message. In some aspects, the first UE 705 may send the coordination indication separately from the indication of the non-preferred resources. In some aspects, among other examples, the first UE 705 may send the coordination indication via SCI (e.g., SCI type 1 (SCI 1) or SCI type 2 (SCI 2)) or MAC Control Element (CE).

In some aspects, the coordination indication may have a particular format for indicating unavailable resources. For example, the first UE 705 may configure a bitmap of slot indexes, wherein the value of each bit in the bitmap indicates whether the corresponding slot is available or unavailable. Additionally or alternatively, the first UE 705 may configure a bitmap, wherein each set of bits indicates one of a plurality of states (e.g., a two-bit bitmap may indicate a slot as available, unavailable, preferred, or non-preferred). In some aspects, the first UE 705 may include a slot identifier and a duration identifier in the coordination indication. For example, the first UE 705 may identify a starting time slot (e.g., where the first UE 705 is unavailable for side link reception) and a duration (e.g., a duration of a time slot during which the first UE 705 remains unavailable for side link reception) in the coordination indication. In some aspects, the duration may be defined with respect to only the time slots of the resource pool available for side link communication or with respect to all time slots (e.g., two time slots available for the resource pool and unavailable for the resource pool). In some aspects, the first UE 705 may include a periodicity indicator (e.g., to indicate the periodicity of a slot in which the first UE 705 is not available for side link reception).

In some aspects, the coordination indication may include an indicator of a reference point for interpreting the coordination indication. For example, the first UE 705 may indicate a reference point from which to derive a slot corresponding to a first bit of the bitmap. Additionally or alternatively, the first UE 705 may define a time reference with respect to a time slot in which the coordination indication is signaled. For example, the first UE 705 may transmit a coordination indication in a particular time slot and may define one or more parameters of the coordination indication (e.g., the time slot corresponding to the first bit of the bitmap) relative to the particular time slot.

In some aspects, the coordination indication may be resource pool specific or side chain component carrier specific. For example, the first UE 705 may send a coordination indication in a particular component carrier to apply to side link reservations on the particular component carrier. Additionally or alternatively, the first UE 705 may transmit the coordination indication as a cross-resource pool or a cross-component carrier (e.g., the first UE 705 may transmit the coordination indication in the first component carrier to apply to resource reservation in the second component carrier).

As in fig. 7 and further illustrated by reference numeral 720, the second UE 710 may communicate using unavailable resources based at least in part on the condition being met. For example, the second UE 710 may determine that the side link communication has a threshold priority and may determine to transmit the side link communication using resources indicated as unavailable resources in the coordination indication. In some aspects, the second UE 710 may interpret the coordination indication based at least in part on a timing at which the coordination indication was received by the second UE 710. For example, when the second UE 710 receives the coordination indication during the sensing window, the second UE 710 may determine that the resources indicated by the coordination indication are not available and may relinquish the selection of the resources indicated by the coordination indication. Conversely, when the second UE 710 is at time t >Time slot n-T _proc,0 (wherein T _proc,0 Representing processing time) receives the coordination indication, the second UE 710 may use the coordination indication to re-evaluate whether to use the selected resources indicated as unavailable in the coordination indication. In this case, the second UE 710 may continue to use the selected resource if the priority is greater than the threshold, and the second UE 710 may relinquish use of the selected resource if the priority is less than the threshold.

As shown in fig. 7 and further illustrated by reference numeral 725, the second UE 710 may send an indication that the second UE 710 is to use the unavailable resources for high priority communications. For example, the second UE 710 may transmit an SCI to indicate that the second UE 710 is to transmit or retransmit communications to the first UE 705 on a side link having a priority that meets a threshold (e.g., which may be configured based at least in part on signaling communicated between the first UE 705 and the second UE 710). In this case, the second UE 710 may transmit the SCI a threshold period of time before the unavailable resources or reserved resources to facilitate processing of the SCI by the first UE 705. Additionally or alternatively, the second UE 710 may send an indication that the second UE 710 is to use unavailable resources to transmit packets having remaining PDBs less than a threshold (e.g., a threshold that may be configured based at least in part on signaling communicated between the first UE 705 and the second UE 710). In some aspects, the transmission of packets with remaining PDBs less than a threshold may be classified or treated as high priority communications.

As shown in fig. 7 and further by reference numeral 730, the first UE 705 and the second UE 710 may communicate using unavailable resources. For example, the second UE 710 may send communications to the first UE 705 on a side link according to the coordination indication. In this case, the first UE 705 may relinquish transmitting on the uplink among the resources that the second UE 710 is transmitting on the side link. In another example, the first UE 705 may transmit on the uplink in the unavailable resources when the communication of the second UE 710 does not meet the threshold priority and the second UE 710 determines not to transmit in the unavailable resources.

As described above, fig. 7 is provided as an example. Other examples may differ from the example described with respect to fig. 7.

Fig. 8 is a diagram illustrating an example process 800 performed, for example, by a UE, in accordance with the present disclosure. Example process 800 is an example of a UE (e.g., UE 120) performing operations associated with an indication of unavailable resources.

As shown in fig. 8, in some aspects, process 800 may include: a coordination indication is sent identifying a set of availability states for a set of resources, wherein the coordination indication is an explicit indication or an implicit indication (block 810). For example, the UE (e.g., using the communication manager 140 and/or the sending component 1004 depicted in fig. 10) may send a coordination indication identifying the set of availability statuses of the set of resources, wherein the coordination indication is an explicit indication or an implicit indication, as described above.

As further shown in fig. 8, in some aspects, process 800 may include: communication is performed on a side link or uplink based on the set of availability statuses (block 820). For example, a UE (e.g., using the communication manager 140 and/or the receiving component 1002 or the transmitting component 1004 depicted in fig. 10) may communicate on a side link or uplink according to a set of availability statuses, as described above.

Process 800 may include additional aspects such as any single aspect or any combination of aspects described below and/or in connection with one or more other processes described elsewhere herein.

In a first aspect, transmitting the coordination indication includes transmitting an implicit indication to identify one or more resources in the set of resources as non-preferred resources.

In a second aspect alone or in combination with the first aspect, transmitting the coordination indication comprises: an explicit indication is sent to identify one or more resources in the set of resources as unavailable for side link reception.

In a third aspect, alone or in combination with one or more of the first and second aspects, the availability status in the set of availability statuses indicates whether resources in the set of resources are available for uplink transmission or unavailable for side link reception.

In a fourth aspect, alone or in combination with one or more of the first to third aspects, the coordination indication is included in at least one of: aperiodic messages, periodic messages, activation messages, deactivation messages, or a combination thereof.

In a fifth aspect, alone or in combination with one or more of the first to fourth aspects, the coordination indication is included in a message comprising an indicator of one or more other availability status of one or more other resources.

In a sixth aspect, alone or in combination with one or more of the first through fifth aspects, the coordination indication is included in an independent message that does not include an indicator of one or more other availability status of one or more other resources.

In a seventh aspect alone or in combination with one or more of the first to sixth aspects, the coordination indication comprises a bit map of slot indexes or an identifier and a duration of a starting slot.

In an eighth aspect, alone or in combination with one or more of the first to seventh aspects, the duration is defined only with respect to available time slots of the resource pool or with respect to both available time slots and unavailable time slots of the resource pool.

In a ninth aspect, alone or in combination with one or more of the first to eighth aspects, the time reference for the coordination indication is defined with respect to a time slot in which the coordination indication is signaled.

In a tenth aspect, alone or in combination with one or more of the first to ninth aspects, the coordination indication is resource pool specific or side link component carrier specific.

In an eleventh aspect alone or in combination with one or more of the first to tenth aspects, the coordination indication is a cross-resource pool indication or a cross-component carrier indication.

While fig. 8 shows example blocks of the process 800, in some aspects, the process 800 may include additional blocks, fewer blocks, different blocks, or differently arranged blocks than those depicted in fig. 8. Additionally or alternatively, two or more of the blocks of process 800 may be performed in parallel.

Fig. 9 is a diagram illustrating an example process 900 performed, for example, by a UE, in accordance with the present disclosure. Example process 900 is an example of a UE (e.g., UE 120) performing operations associated with an indication of unavailable resources.

As shown in fig. 9, in some aspects, process 900 may include: a coordination indication is received identifying a set of availability states for a set of resources, wherein the coordination indication is an explicit indication or an implicit indication (block 910). For example, the UE (e.g., using the communication manager 140 and/or the receiving component 1002 depicted in fig. 10) can receive a coordination indication identifying a set of availability statuses of a set of resources, wherein the coordination indication is an explicit indication or an implicit indication, as described above.

As further shown in fig. 9, in some aspects, process 900 may include transmitting on a side link in a resource selected according to the set of availability statuses (block 920). For example, the UE (e.g., using the communication manager 140 and/or the transmitting component 1004 depicted in fig. 10) may transmit on a side link in resources selected according to the set of availability statuses, as described above.

Process 900 may include additional aspects, such as any single aspect or any combination of aspects described below and/or in connection with one or more other processes described elsewhere herein.

In a first aspect, receiving the coordination indication includes receiving an implicit indication to identify one or more resources in the set of resources as non-preferred resources.

In a second aspect alone or in combination with the first aspect, receiving the coordination indication comprises: an explicit indication is received to identify one or more resources in the set of resources as unavailable for side link reception.

In a twelfth aspect, alone or in combination with one or more of the first through eleventh aspects, the process 900 includes selecting resources for transmission based at least in part on a timing of receiving the coordination indication.

In a thirteenth aspect alone or in combination with one or more of the first through twelfth aspects, the process 900 includes: the side link control information is transmitted to indicate transmission of packets having priority in a resource, wherein the side link control information is transmitted a number of time slots prior to the resource.

In a fourteenth aspect alone or in combination with one or more of the first through thirteenth aspects, the process 900 includes: during a time slot of an unavailability period associated with the set of availability statuses, signaling is sent reserving resources for new transmission or retransmission of the packet.

While fig. 9 shows example blocks of process 900, in some aspects process 900 may include additional blocks, fewer blocks, different blocks, or differently arranged blocks than those depicted in fig. 9. Additionally or alternatively, two or more of the blocks of process 900 may be performed in parallel.

Fig. 10 is a block diagram of an example apparatus 1000 for wireless communication. The apparatus 1000 may be a UE, or the UE may include the apparatus 1000. In some aspects, the apparatus 1000 includes a receiving component 1002 and a transmitting component 1004 that can communicate with each other (e.g., via one or more buses and/or one or more other components). As shown, apparatus 1000 may communicate with another apparatus 1006 (e.g., a UE, a base station, or another wireless communication device) using a receiving component 1002 and a transmitting component 1004. As further shown, the apparatus 1000 may include a communication manager 140. The communication manager 140 can include, among other examples, a resource selection component 1008.

In some aspects, the apparatus 1000 may be configured to perform one or more operations described herein in connection with fig. 7. Additionally or alternatively, the device 1000 may be configured to perform one or more processes described herein, such as the process 800 of fig. 8, the process 900 of fig. 9, or a combination thereof. In some aspects, the apparatus 1000 and/or one or more components shown in fig. 10 may include one or more components of the UE described above in connection with fig. 2. Additionally or alternatively, one or more of the components shown in fig. 10 may be implemented within one or more of the components described above in connection with fig. 2. Additionally or alternatively, one or more components of the set of components may be at least partially implemented as software stored in memory. For example, a component (or a portion of a component) may be implemented as instructions or code stored in a non-transitory computer-readable medium and executable by a controller or processor to perform functions or operations of the component.

The receiving component 1002 can receive a communication, such as a reference signal, control information, data communication, or a combination thereof, from the device 1006. The receiving component 1002 can provide the received communication to one or more other components of the apparatus 1000. In some aspects, the receiving component 1002 can perform signal processing (such as filtering, amplifying, demodulating, analog-to-digital converting, demultiplexing, deinterleaving, demapping, equalizing, interference cancellation, or decoding, among other examples) on the received communication, and can provide the processed signal to one or more other components of the apparatus 1006. In some aspects, the reception component 1002 can include one or more antennas, demodulators, MIMO detectors, reception processors, controllers/processors, memories, or a combination thereof for the UE described above in connection with fig. 2.

The sending component 1004 can communicate such as reference signals, control information, data communications, or a combination thereof to the device 1006. In some aspects, one or more other components of the apparatus 1006 may generate a communication and may provide the generated communication to the sending component 1004 for transmission to the apparatus 1006. In some aspects, the transmitting component 1004 can perform signal processing (e.g., filtering, amplifying, modulating, digital-to-analog converting, multiplexing, interleaving, mapping, or encoding, among other examples) on the generated communication and can transmit the processed signal to the device 1006. In some aspects, the transmission component 1004 can include one or more antennas, modulators, transmit MIMO processors, transmit processors, controllers/processors, memories, or combinations thereof of the UE described above in connection with fig. 2. In some aspects, the sending component 1004 may be co-located with the receiving component 1002 in a transceiver.

The sending component 1004 can send a coordination indication identifying a set of availability statuses of a set of resources, wherein the coordination indication is an explicit indication or an implicit indication. The receiving component 1002 or the transmitting component 1004 can communicate on a side link or uplink, respectively, based upon the set of availability statuses.

The receiving component 1002 can receive a coordination indication identifying a set of availability statuses for a set of resources, wherein the coordination indication is an explicit indication or an implicit indication. The transmitting component 1004 can transmit on a side link in a resource selected based on the set of availability statuses. The resource selection component 1008 can select a resource for transmission based at least in part on a timing of receiving the coordination indication. The transmitting component 1004 can transmit side link control information to indicate transmission of packets having priority in a resource, wherein the side link control information is transmitted a number of time slots prior to the resource.

The number and arrangement of components shown in fig. 10 are provided as examples. In practice, there may be additional components, fewer components, different components, or differently arranged components than those shown in fig. 10. Further, two or more components shown in fig. 10 may be implemented within a single component, or a single component shown in fig. 10 may be implemented as multiple distributed components. Additionally or alternatively, one set (one or more) of components shown in fig. 10 may perform one or more functions described as being performed by another set of components shown in fig. 10.

The following provides an overview of some aspects of the disclosure:

aspect 1: a method of wireless communication performed by a User Equipment (UE), comprising: transmitting a coordination indication identifying a set of availability states of a set of resources, wherein the coordination indication is an explicit indication or an implicit indication; and communicating on a side link or uplink according to the set of availability statuses.

Aspect 2: the method of aspect 1, wherein sending the coordination indication comprises: an implicit indication is sent to identify one or more resources in the set of resources as non-preferred resources.

Aspect 3: the method of any of aspects 1-2, wherein sending a coordination indication comprises: an explicit indication is sent to identify one or more resources in the set of resources as unavailable for side link reception.

Aspect 4: a method according to any of aspects 1 to 3, wherein the availability status in the set of availability statuses indicates whether resources in the set of resources are available for uplink transmission or unavailable for side link reception.

Aspect 5: the method of any one of aspects 1-4, wherein the coordination indication is included in at least one of: aperiodic messages, periodic messages, activation messages, deactivation messages, or a combination thereof.

Aspect 6: the method of any one of aspects 1-5, wherein the coordination indication is included in a message that includes an indicator of one or more other availability statuses of one or more other resources.

Aspect 7: the method of any of aspects 1-6, wherein the coordination indication is included in an independent message that does not include an indicator of one or more other availability status of one or more other resources.

Aspect 8: the method of any of aspects 1-7, wherein the coordination indication comprises a bit map of a slot index or an identifier and a duration of a starting slot.

Aspect 9: the method of aspect 8, wherein the duration is defined with respect to only available timeslots of a resource pool or with respect to both available timeslots and unavailable timeslots of the resource pool.

Aspect 10: the method of any one of aspects 1 to 9, wherein the time reference for the coordination indication is defined with respect to a time slot in which the coordination indication is signaled.

Aspect 11: the method of any of aspects 1-10, wherein the coordination indication is resource pool specific or side link component carrier specific.

Aspect 12: the method of aspect 11, wherein the coordination indication is a cross-resource pool indication or a cross-component carrier indication.

Aspect 13: a method of wireless communication performed by a User Equipment (UE), comprising: receiving a coordination indication identifying a set of availability states of a set of resources, wherein the coordination indication is an explicit indication or an implicit indication; and transmitting on the side link in a resource selected according to the set of availability statuses.

Aspect 14: the method of aspect 13, wherein receiving the coordination indication comprises: an implicit indication is received to identify one or more resources in the set of resources as non-preferred resources.

Aspect 15: the method of any of aspects 13-14, wherein receiving a coordination indication comprises: an explicit indication is received to identify one or more resources in the set of resources as unavailable for side link reception.

Aspect 16: the method according to any of the aspects 13-15, wherein the availability status in the set of availability statuses indicates whether resources in the set of resources are available for uplink transmission or unavailable for side link reception.

Aspect 17: the method of any of aspects 13-16, wherein the coordination indication is included in at least one of: aperiodic messages, periodic messages, activation messages, deactivation messages, or a combination thereof.

Aspect 18: the method of any of aspects 13-17, wherein the coordination indication is included in a message that includes an indicator of one or more other availability statuses of one or more other resources.

Aspect 19: the method of any of aspects 13-18, wherein the coordination indication is included in an independent message that does not include an indicator of one or more other availability status of one or more other resources.

Aspect 20: the method of any of aspects 13 to 19, wherein the coordination indication comprises a bit map of a slot index or an identifier and a duration of a starting slot.

Aspect 21: the method of aspect 20, wherein the duration is defined with respect to only available timeslots of a resource pool or with respect to both available timeslots and unavailable timeslots of the resource pool.

Aspect 22: the method of any of aspects 13 to 21, wherein the time reference for the coordination indication is defined with respect to a time slot in which the coordination indication is signaled.

Aspect 23: the method of any of aspects 13-22, wherein the coordination indication is resource pool specific or side link component carrier specific.

Aspect 24: the method of aspect 23, wherein the coordination indication is a cross-resource pool indication or a cross-component carrier indication.

Aspect 25: the method of any one of aspects 13 to 24, further comprising: the resources for transmission are selected based at least in part on the timing at which the coordination indication is received.

Aspect 26: the method of any one of aspects 13 to 25, further comprising: the side link control information is transmitted to indicate transmission of packets having priority in a resource, wherein the side link control information is transmitted a number of time slots prior to the resource.

Aspect 27: the method of any one of aspects 13 to 26, further comprising: signaling to reserve resources for new transmissions or retransmissions of packets is sent during time slots of an unavailability period associated with the set of availability statuses.

Aspect 28: an apparatus for wireless communication at a device, comprising: a processor; a memory coupled to the processor; and instructions stored in the memory and executable by the processor to cause the apparatus to perform the method of one or more of aspects 1-12.

Aspect 29: an apparatus for wireless communication comprising a memory and one or more processors coupled to the memory, the memory and the one or more processors configured to perform the method of one or more of aspects 1-12.

Aspect 30: an apparatus for wireless communication, comprising at least one means for performing the method of one or more of aspects 1-12.

Aspect 31: a non-transitory computer-readable medium storing code for wireless communication, the code comprising instructions executable by a processor to perform the method of one or more of aspects 1-12.

Aspect 32: a non-transitory computer-readable medium storing a set of instructions for wireless communication, the set of instructions comprising one or more instructions that, when executed by one or more processors of a device, cause the device to perform the method of one or more of aspects 1-12.

Aspect 33: an apparatus for wireless communication at a device, comprising: a processor; a memory coupled to the processor; and instructions stored in the memory and executable by the processor to cause the apparatus to perform the method of one or more of aspects 13-27.

Aspect 34: an apparatus for wireless communication comprising a memory and one or more processors coupled to the memory, the memory and the one or more processors configured to perform the method of one or more of aspects 13-27.

Aspect 35: an apparatus for wireless communication, comprising at least one means for performing the method of one or more of aspects 13-27.

Aspect 36: a non-transitory computer-readable medium storing code for wireless communication, the code comprising instructions executable by a processor to perform the method of one or more of aspects 13-27.

Aspect 37: a non-transitory computer-readable medium storing a set of instructions for wireless communication, the set of instructions comprising one or more instructions that, when executed by one or more processors of a device, cause the device to perform a method of one or more of aspects 13-27.

The foregoing disclosure provides illustration and description, but is not intended to be exhaustive or to limit the aspects to the precise form disclosed. Modifications and variations are possible in light of the above disclosure or may be acquired from practice of various aspects.

As used herein, the term "component" is intended to be broadly interpreted as hardware and/or a combination of hardware and software. Whether referred to as software, firmware, middleware, microcode, hardware description language, or other terminology, should be broadly interpreted to mean instructions, instruction sets, code segments, program code, programs, subroutines, software modules, applications, software packages, routines, subroutines, objects, executables, threads of execution, procedures, and/or functions, and other examples. As used herein, a "processor" is implemented in hardware and/or a combination of hardware and software. It is apparent that the systems and/or methods described herein may be implemented in different forms of hardware and/or combinations of hardware and software. The actual specialized control hardware or software code used to implement the systems and/or methods is not limiting of these aspects. Thus, the operations and behavior of the systems and/or methods were described without reference to the specific software code because one of ordinary skill in the art would understand that software and hardware could be designed to implement the systems and/or methods based at least in part on the description herein.

As used herein, a "meeting a threshold" may refer to a value greater than a threshold, greater than or equal to a threshold, less than or equal to a threshold, not equal to a threshold, etc., depending on the context.

Even though particular combinations of features are recited in the claims and/or disclosed in the specification, these combinations are not intended to limit the disclosure of the various aspects. Many of these features may be combined in ways not specifically recited in the claims and/or disclosed in the specification. The disclosure of the various aspects includes the combination of each dependent claim with each other claim in the set of claims. As used herein, a phrase referring to "at least one" in a list of items refers to any combination of these items, including individual members. As an example, "at least one of a, b, or c" is intended to cover a, b, c, a + b, a + c, b + c, and a + b + c, as well as any combinations with a plurality of the same elements (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 ordering of a, b and c).

No element, act, or instruction used herein should be construed as critical or essential unless explicitly described as such. Furthermore, as used herein, the articles "a" and "an" are intended to include one or more items, and may be used interchangeably with "one or more". Furthermore, as used herein, the article "the" is intended to include one or more items recited in conjunction with the article "the" and may be used interchangeably with "one or more". Furthermore, as used herein, the terms "set" and "group" are intended to include one or more items, and may be used interchangeably with "one or more". Where only one item is intended, the phrase "only one" or similar language is used. Furthermore, as used herein, the terms "having," containing, "and the like are intended to be open-ended terms that do not limit the element they modify (e.g., an element having" a may also have B). Furthermore, unless explicitly stated otherwise, the phrase "based on" is intended to mean "based, at least in part, on". Furthermore, as used herein, the term "or" when used in series is intended to be inclusive and may be used interchangeably with "and/or" unless otherwise specifically indicated (e.g., if used in combination with "any" or "only one of).

Claims

1. A User Equipment (UE) for wireless communication, comprising:

a memory; and

one or more processors, coupled to the memory, configured to:

transmitting a coordination indication identifying a set of availability states of a set of resources, wherein the coordination indication is an explicit indication or an implicit indication; and

and communicating on a side link or an uplink according to the set of availability statuses.

2. The UE of claim 1, wherein to send the coordination indication, the one or more processors are configured to:

the implicit indication is sent to identify one or more resources in the set of resources as non-preferred resources.

3. The UE of claim 1, wherein to send the coordination indication, the one or more processors are configured to:

the explicit indication is sent to identify one or more resources in the set of resources as unavailable for side link reception.

4. The UE of claim 1, wherein availability status in the set of availability statuses indicates whether resources in the set of resources are available for uplink transmission or unavailable for sidelink reception.

5. The UE of claim 1, wherein the coordination indication is included in at least one of:

The non-periodic message is sent in a non-periodic manner,

the periodic message is sent in a periodic message,

the message is activated and the message is sent to the user,

deactivating messages, or

A combination thereof.

6. The UE of claim 1, wherein the coordination indication is included in a message comprising an indicator of one or more other availability statuses of one or more other resources.

7. The UE of claim 1, wherein the coordination indication is included in an independent message that does not include an indicator of one or more other availability statuses of one or more other resources.

8. The UE of claim 1, wherein the coordination indication comprises a bit map of a slot index or an identifier comprising at least one of a starting slot, a duration, or a period.

9. The UE of claim 8, wherein the duration is defined only with respect to available time slots of a resource pool or with respect to both available time slots and unavailable time slots of the resource pool.

10. The UE of claim 1, wherein a time reference for the coordination indication is defined relative to a time slot in which the coordination indication is signaled.

11. The UE of claim 1, wherein the coordination indication is resource pool specific or side chain component carrier specific.

12. The UE of claim 11, wherein the coordination indication is a cross-resource pool indication or a cross-component carrier indication.

13. A User Equipment (UE) for wireless communication, comprising:

a memory; and

one or more processors, coupled to the memory, configured to:

receiving a coordination indication identifying a set of availability states of a set of resources, wherein the coordination indication is an explicit indication or an implicit indication; and

and transmitting on a side link in the resource selected according to the availability status set.

14. The UE of claim 13, wherein to receive the coordination indication, the one or more processors are configured to:

the implicit indication is received to identify one or more resources in the set of resources as non-preferred resources.

15. The UE of claim 13, wherein to receive the coordination indication, the one or more processors are configured to:

the explicit indication is received to identify one or more resources in the set of resources as unavailable for side link reception.

16. The UE of claim 13, wherein availability status in the set of availability statuses indicates whether resources in the set of resources are available for uplink transmission or unavailable for sidelink reception.

17. The UE of claim 13, wherein the coordination indication is included in at least one of:

the non-periodic message is sent in a non-periodic manner,

the periodic message is sent in a periodic message,

the message is activated and the message is sent to the user,

deactivating messages, or

A combination thereof.

18. The UE of claim 13, wherein the coordination indication is included in a message comprising an indicator of one or more other availability statuses of one or more other resources.

19. The UE of claim 13, wherein the coordination indication is included in an independent message that does not include an indicator of one or more other availability statuses of one or more other resources.

20. The UE of claim 13, wherein the coordination indication comprises a bit map of a slot index or an identifier comprising at least one of a starting slot, a duration, or a period.

21. The UE of claim 20, wherein the duration is defined only with respect to available time slots of a resource pool or with respect to both available time slots and unavailable time slots of the resource pool.

22. The UE of claim 13, wherein a time reference for the coordination indication is defined relative to a time slot in which the coordination indication is signaled.

23. The UE of claim 13, wherein the coordination indication is resource pool specific or side chain component carrier specific.

24. The UE of claim 23, wherein the coordination indication is a cross-resource pool indication or a cross-component carrier indication.

25. The UE of claim 13, wherein the one or more processors are further configured to:

resources for transmission are selected based at least in part on the timing of receiving the coordination indication.

26. The UE of claim 13, wherein the one or more processors are further configured to:

the side link control information is transmitted to indicate the transmission of packets having priority or packet delay budget in a resource, wherein the side link control information is transmitted a number of time slots prior to the resource.

27. The UE of claim 13, wherein the one or more processors are further configured to:

signaling to reserve resources for new transmissions or retransmissions of packets is sent during time slots of an unavailability period associated with the set of availability statuses.

28. A method of wireless communication performed by a User Equipment (UE), comprising:

29. The method of claim 28, wherein transmitting the coordination indication comprises:

30. A method of wireless communication performed by a User Equipment (UE), comprising: