Configuring duplex mode

Abstract

In general, various aspects of the present disclosure relate to wireless communications. In some aspects, a first user equipment (UE) may transmit information indicating a duplex mode of the first UE to a set of second UEs, where the duplex mode indicates one or more reception intervals of the first UE and one or more transmission intervals of the first UE. The UE may communicate according to a duplex mode. Numerous other aspects are described.

Description

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This patent application claims priority to U.S. Patent Application No. 17 / 823,345, entitled “CONFIGURING DUPLEXING PATTERN”, filed on August 30, 2022, and is assigned to the assignee of this application. The disclosure of the prior application is considered a part of and incorporated by reference into this patent application. Technical Field

[0003]

[0006] Generally speaking, aspects of the disclosure relate to wireless communications, and to techniques and apparatus for configuring duplex modes. Background Art

[0004] Wireless communication systems are widely deployed to provide various telecommunication services such as telephony, video, data, messaging, and broadcasting. Typical wireless communication systems may employ multiple access technologies that can support communication with multiple users by sharing available system resources (e.g., bandwidth, transmit power, etc.). Examples of such multiple access technologies include code division multiple access (CDMA) systems, time division multiple access (TDMA) systems, frequency division multiple access (FDMA) systems, orthogonal frequency division multiple access (OFDMA) systems, single carrier frequency division multiple access (SC-FDMA) systems, time division synchronous code division multiple access (TD-SCDMA) systems, and long term evolution (LTE). LTE / LTE-Advanced is a set of enhancements to the Universal Mobile Telecommunications System (UMTS) mobile standard released by the Third Generation Partnership Project (3GPP).

[0005] A wireless network may include one or more network nodes that support communications for wireless communication devices, such as user equipment (UE) or multiple UEs. A UE may communicate with a network node via downlink communications and uplink communications. A "downlink" (or "DL") refers to a communication link from a network node to a UE, and an "uplink" (or "UL") refers to a communication link from a UE to a network node. Some wireless networks may support device-to-device communications, such as via a local link (e.g., a sidelink (SL), a wireless local area network (WLAN) link, and / or a wireless personal area network (WPAN) link, etc.).

[0006] The above-mentioned multiple access technologies have been adopted in various telecommunication standards to provide a common protocol that enables different UEs to communicate at a city, country, region and / or global level. New Radio (NR), which may be referred to as 5G, is a set of enhancements to the LTE mobile standard released by 3GPP. NR is designed to better support mobile broadband Internet access by improving spectrum efficiency, reducing costs, improving services, utilizing new spectrum and better integrating with other open standards using orthogonal frequency division multiplexing (CP-OFDM) with cyclic prefix (CP) on the downlink and CP-OFDM and / or single carrier frequency division multiplexing (SC-FDM) (also known as discrete Fourier transform spread OFDM (DFT-s-OFDM)) on the uplink, as well as supporting beamforming, multiple input multiple output (MIMO) antenna technology and carrier aggregation. As the demand for mobile broadband access continues to grow, further improvements in LTE, NR and other wireless access technologies remain useful. Summary of the invention

[0007] Some aspects described herein relate to a method of wireless communication performed by a first user equipment (UE). The method may include: sending information indicating a duplex mode of the first UE to a set of second UEs, wherein the duplex mode indicates one or more receive intervals of the first UE and one or more transmit intervals of the first UE. The method may include: communicating according to the duplex mode.

[0008] Some aspects described herein relate to a first UE for wireless communication. The first UE may include a memory and one or more processors coupled to the memory. The one or more processors may be configured to send information indicating a duplex mode of the first UE to a set of second UEs, wherein the duplex mode indicates one or more receive intervals of the first UE and one or more transmit intervals of the first UE. The one or more processors may be configured to communicate according to the duplex mode.

[0009] Some aspects described herein relate to a non-transitory computer-readable medium storing a set of instructions for wireless communication by a first UE. The set of instructions, when executed by one or more processors of the UE, may cause the UE to send information indicating a duplex mode of the first UE to a set of second UEs, wherein the duplex mode indicates one or more receive intervals of the first UE and one or more transmit intervals of the first UE. The set of instructions, when executed by one or more processors of the UE, may cause the UE to communicate according to the duplex mode.

[0010] Some aspects described herein relate to an apparatus for wireless communication. The apparatus may include means for sending information indicating a duplex mode of the apparatus to a set of second UEs, wherein the duplex mode indicates one or more receive intervals of the apparatus and one or more transmit intervals of the apparatus. The apparatus may include means for communicating according to the duplex mode.

[0011] Some aspects described herein relate to a computer program product comprising program instructions that, when executed by one or more processors, cause the one or more processors to: send information indicating a duplex mode of a first UE to a set of second UEs, wherein the duplex mode indicates at least one of one or more receive intervals of the first UE or one or more transmit intervals of the first UE; and communicate according to the duplex mode.

[0012] Aspects generally include methods, apparatuses, systems, computer program products, non-transitory computer-readable media, user equipment, base stations, network entities, network nodes, wireless communication devices, and / or processing systems as generally described herein with reference to and as illustrated in the accompanying drawings.

[0013] The foregoing has summarized the features and technical advantages of the examples according to the present disclosure in a fairly broad sense so that the following detailed description can be better understood. Additional features and advantages will be described hereinafter. The disclosed concepts and specific examples can be easily used as the basis for modifying or designing other structures for the same purpose of achieving the present disclosure. Such equivalent constructions do not depart from the scope of the appended claims. When considered in conjunction with the accompanying drawings, the features of the concepts disclosed herein (both their organization and method of operation) and the associated advantages will be better understood from the following description. Each of the figures in the accompanying drawings is provided for the purpose of illustration and description, rather than as a definition of the scope of the claims.

[0014] Although aspects are described by illustrations of some examples in the present disclosure, it will be understood by those skilled in the art that such aspects can be implemented in many other arrangements and scenarios. The technology described herein can be implemented using different platform types, devices, systems, shapes, sizes and / or packaging arrangements. For example, some aspects can be implemented via integrated chip embodiments / or other devices based on non-module components (e.g., end-user devices, vehicles, communication devices, computing devices, industrial equipment, retail / purchase equipment, medical devices and / or artificial intelligence devices). Aspects can be implemented in chip-level components, modular components, non-modular components, non-chip-level components, device-level components and / or system-level components. The device incorporating the described aspects and features may include additional components and features for the 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). The aspects described herein are intended to be practiced in a variety of devices, components, systems, distributed arrangements and / or end-user devices of varying sizes, shapes and configurations. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order that the above-mentioned features of the present disclosure may be understood in detail, there may be a more specific description of the above summary of reference aspects, some of which are shown in the accompanying drawings. However, it is to be noted that the drawings only illustrate certain typical aspects of the present disclosure and are therefore not to be considered as limiting the scope thereof, as the description may allow for other equally effective aspects. The same reference numerals in different drawings may identify the same or similar elements.

[0016] Figure 1 is a schematic diagram illustrating an example of a wireless network according to the present disclosure.

[0017] Figure 2 is a schematic diagram illustrating an example of a network node communicating with a user equipment (UE) in a wireless network according to the present disclosure.

[0018] Figure 3 is a schematic diagram illustrating an example of sidelink communications according to the present disclosure.

[0019] Figure 4 is a schematic diagram showing examples of sidelink communications and access link communications according to the present disclosure.

[0020] Figure 5 is a diagram illustrating an example of signaling associated with a duplex mode for sidelink communications according to the present disclosure.

[0021] Figure 6 is a schematic diagram showing an example of a duplex mode according to the present disclosure.

[0022] Figure 7 is a diagram showing an example of the relationship between deaf intervals of a duplex mode according to the present disclosure.

[0023] Figure 8 is a diagram showing an example of a relationship between a transmission interval and a deaf interval of a duplex mode according to the present disclosure.

[0024] Fig. 9 is a diagram illustrating an example of conditions associated with a duplex mode according to the present disclosure.

[0025] Fig.10 is a diagram illustrating an example of channel occupancy time associated with a duplex mode according to the present disclosure.

[0026] Fig.11 is a schematic diagram illustrating an example process performed, for example, by a first UE according to the present disclosure.

[0027] Fig.12 is a schematic diagram of an example apparatus for wireless communications according to the present disclosure. DETAILED DESCRIPTION

[0028] The various aspects of the present disclosure are described more fully below with reference to the accompanying drawings. However, the present disclosure can be implemented in different forms and should not be understood as being limited to any specific structure or function presented throughout the present disclosure. On the contrary, these aspects are provided so that the present disclosure is sufficient and complete, and the scope of the present disclosure is fully conveyed to those skilled in the art. Those skilled in the art should recognize that, whether independent of any other aspects of the present disclosure or implemented in combination with any other aspects of the present disclosure, the scope of the present disclosure is intended to cover any aspect of the disclosure disclosed herein. For example, any number of aspects set forth herein can be used to implement a device or practice method. In addition, the scope of the present disclosure is intended to cover such devices and methods that are practiced using other structures, functional bodies, or structures and functional bodies in addition to or different from the various aspects of the present disclosure set forth herein. It should be understood that any aspect of the present disclosure disclosed herein can be embodied by one or more elements of the claims.

[0029] Several aspects of telecommunication systems will now be presented with reference to various devices and techniques. These devices and techniques will be described in the following detailed description and will be illustrated in the accompanying drawings by various blocks, modules, components, circuits, steps, processes, algorithms, etc. (collectively referred to as "elements"). These elements can be implemented in hardware, software, or a combination thereof. Whether these elements are implemented as hardware or software depends on the specific application and the design constraints imposed on the overall system.

[0030] Although aspects may be described herein using terminology generally associated with 5G or new radio (NR) radio access technology (RAT), aspects of the present disclosure may be applied to other RATs, such as 3G RAT, 4G RAT, and / or post-5G RATs (e.g., 6G).

[0031] Figure 1 1 is a schematic diagram showing an example of a wireless network 100 according to the present disclosure. The wireless network 100 may be or may include elements of a 5G (e.g., NR) network and / or a 4G (e.g., Long Term Evolution (LTE)) network, etc. The wireless network 100 may include one or more network nodes 110 (shown as network node 110a, network node 110b, network node 110c, and network node 110d), a user equipment (UE) 120 or multiple UEs 120 (shown as UE 120a, UE 120b, UE 120c, UE 120d, and UE 120e), and / or other entities. The network node 110 is a network node that communicates with the UE 120. As shown, the network node 110 may include one or more network nodes. For example, the network node 110 may be an aggregated network node, meaning that the aggregated network node is configured to utilize a radio protocol stack that is physically or logically integrated within a single radio access network (RAN) node (e.g., within a single device or unit). As another example, the network node 110 may be a disaggregated network node (sometimes referred to as a disaggregated base station), meaning that the network node 110 is configured to utilize a protocol stack that is physically or logically distributed between two or more nodes, such as one or more central units (CUs), one or more distributed units (DUs), or one or more radio units (RUs).

[0032] In some examples, the network node 110 is or includes a network node (such as a RU) that communicates with the UE 120 via a radio access link. In some examples, the network node 110 is or includes a network node (such as a DU) that communicates with other network nodes 110 via a fronthaul link or a midhaul link. In some examples, the network node 110 is or includes a network node (such as a CU) that communicates with other network nodes 110 via a midhaul link or communicates with a core network via a backhaul link. In some examples, the network node 110 (such as an aggregated network node 110 or a disaggregated network node 110) may include multiple network nodes, such as one or more RUs, one or more CUs, and / or one or more DUs. The network node 110 may include, for example, an NR base station, an LTE base station, a Node B, an eNB (e.g., in 4G), a gNB (e.g., in 5G), an access point, a transmit receive point (TRP), a DU, a RU, a CU, a mobility element of a network, a core network node, a network element, a network device, a RAN node, or a combination thereof. In some examples, network nodes 110 may be interconnected to each other or to one or more other network nodes 110 in wireless network 100 using any suitable transport network through various types of fronthaul, midhaul, and / or backhaul interfaces (such as, direct physical connections, air interfaces, or virtual networks).

[0033] In some examples, the network node 110 may provide communication coverage for a particular geographic area. In the Third Generation Partnership Project (3GPP), the term "cell" may refer to a coverage area of ​​the network node 110 and / or a network node subsystem serving the coverage area, depending on the context in which the term is used. The network node 110 may provide communication coverage for a macro cell, a micro cell, a femto cell, and / or another type of cell. A macro cell may cover a relatively large geographic area (e.g., a radius of several kilometers) and may allow unrestricted access by a UE 120 with a service subscription. A micro cell may cover a relatively small geographic area and may allow unrestricted access by a UE 120 with a service subscription. A femto cell may cover a relatively small geographic area (e.g., a home) and may allow restricted access by a UE 120 associated with a femto cell (e.g., a UE 120 in a closed subscriber group (CSG)). A network node 110 for a macro cell may be referred to as a macro network node. A network node 110 for a micro cell may be referred to as a micro network node. The network node 110 for a femto cell may be referred to as a femto network node or a home network node. Figure 1In the example shown in , network node 110a may be a macro network node for macro cell 102a, network node 110b may be a pico network node for pico cell 102b, and network node 110c may be a femto network node for femto cell 102c. A network node may support one or more (e.g., three) cells. In some examples, a cell may not necessarily be stationary, and the geographic area of ​​a cell may move according to the location of a network node 110 (e.g., a mobile network node) that is mobile.

[0034] In some aspects, the term "base station" or "network node" may refer to an aggregated base station, a disaggregated base station, an integrated access and backhaul (IAB) node, a relay node, or one or more components thereof. For example, in some aspects, a "base station" or "network node" may refer to a CU, a DU, a RU, a near real-time (near RT) RAN intelligent controller (RIC) or a non-real-time (non-RT) RIC, or a combination thereof. In some aspects, the term "base station" or "network node" may refer to a device configured to perform one or more functions (such as those described herein in conjunction with network node 110). In some aspects, the term "base station" or "network node" may refer to multiple devices configured to perform one or more functions. For example, in some distributed systems, each of a certain number of different devices (which may be located in the same geographic location or in different geographic locations) may be configured to perform at least a portion of a function, or to replicate the execution of at least a portion of a function, and the term "base station" or "network node" may refer to any one or more of those different devices. In some aspects, the term "base station" or "network node" may refer to one or more virtual base stations or one or more virtual base station functions. For example, in some aspects, two or more base station functions may be instantiated on a single device. In some aspects, the term "base station" or "network node" may refer to one of the base station functions but not another. Thus, a single device may include more than one base station.

[0035] The wireless network 100 may include one or more relay stations. A relay station is a network node that receives transmissions of data from an upstream node (e.g., a network node 110 or a UE 120) and sends transmissions of data to a downstream node (e.g., a UE 120 or a network node 110). A relay station may be a UE 120 that can relay transmissions intended for other UEs 120. Figure 1In the example shown in , a network node 110d (e.g., a relay network node) can communicate with a network node 110a (e.g., a macro network node) and a UE 120d to facilitate communication between the network node 110a and the UE 120d. A network node 110 that relays communications may be referred to as a relay station, a relay base station, a relay network node, a relay node, a relay, etc.

[0036] The wireless network 100 may be a heterogeneous network including different types of network nodes 110, such as macro network nodes, pico network nodes, femto network nodes, relay network nodes, etc. These different types of network nodes 110 may have different transmit power levels, different coverage areas, and / or different impacts on interference in the wireless network 100. For example, a macro network node may have a high transmit power level (e.g., 5 to 40 watts), while a pico network node, a femto network node, and a relay network node may have a lower transmit power level (e.g., 0.1 to 2 watts).

[0037] The network controller 130 may be coupled to or in communication with a set of network nodes 110 and provide coordination and control for these network nodes 110. The network controller 130 may communicate with the network nodes 110 via a backhaul communication link or a midhaul communication link. The network nodes 110 may communicate with each other directly or indirectly via a wireless or wired backhaul communication link. In some aspects, the network controller 130 may be or may include a CU or a core network device.

[0038] UE 120 can be distributed throughout the wireless network 100, and each UE 120 can be stationary or mobile. UE 120 can include, for example, access terminals, terminals, mobile stations, and / or user units. UE 120 can be a cellular phone (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, an ultrabook, 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 a 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, an industrial manufacturing device, a global positioning system device, a UE function of a network node, and / or any other suitable device configured to communicate via a wireless or wired medium.

[0039] Some UE 120 may be considered as machine type communication (MTC) or evolved or enhanced machine type communication (eMTC) UE. MTC UE and / or eMTC UE may include, for example, a robot, a drone, a remote device, a sensor, a meter, a monitor, and / or a location tag, which may communicate with a network node, another device (e.g., a remote device), or some other entity. Some UE 120 may be considered as an Internet of Things (IoT) device, and / or may be implemented as a NB-IoT (narrowband IoT) device. Some UE 120 may be considered as a user premises equipment. UE 120 may be included inside a housing that houses components of UE 120, such as a processor component and / or a memory component. 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., a memory) may be operatively coupled, communicatively coupled, electronically coupled, and / or electrically coupled.

[0040] In general, any number of wireless networks 100 may be deployed in a given geographic area. Each wireless network 100 may support a specific RAT and may operate on one or more frequencies. RAT may be referred to as a radio technology, an air interface, etc. A frequency may be referred to as a carrier, a frequency channel, etc. Each frequency may support a single RAT in a given geographic area to avoid interference between wireless networks of different RATs. In some cases, NR or 5G RAT networks may be deployed.

[0041] In some examples, two or more UEs 120 (e.g., shown as UE 120a and UE 120e) may communicate directly using one or more sidelink channels (e.g., without using network node 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, vehicle-to-everything (V2X) protocol (e.g., which may include vehicle-to-vehicle (V2V) protocol, vehicle-to-infrastructure (V2I) protocol, or vehicle-to-pedestrian (V2P) protocol), and / or mesh network. In such examples, UE 120 may perform scheduling operations, resource selection operations, and / or other operations performed by network node 110 as described elsewhere herein.

[0042] The devices of the wireless network 100 can communicate using an electromagnetic spectrum that can be subdivided into various categories, bands, channels, etc. according to frequency or wavelength. For example, the devices of the wireless network 100 can communicate using one or more operating bands. In 5GNR, 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 understood that although a portion of FR1 is greater than 6 GHz, FR1 is often referred to (interchangeably) as a "sub-6 GHz" band in various documents and articles. A similar naming problem sometimes occurs with respect to FR2, which is often referred to (interchangeably) as a "millimeter wave" band in documents and articles, although it is different from the extremely high frequency (EHF) band (30 GHz-300 GHz) identified as a "millimeter wave" band by the International Telecommunication Union (ITU).

[0043] The frequencies between FR1 and FR2 are generally referred to as mid-band frequencies. Recent 5G NR research has identified the operating bands for these mid-band frequencies as the frequency range name FR3 (7.125GHz-24.25GHz). The bands falling within FR3 can inherit FR1 characteristics and / or FR2 characteristics, and therefore, the features of FR1 and / or FR2 can be effectively extended to the mid-band frequencies. In addition, higher frequency bands are currently being explored to extend 5G NR operations to exceed 52.6GHz. For example, three higher operating bands have been identified as frequency range names FR4 or FR4-1 (52.6GHz-71 GHz), FR4 (52.6GHz-114.25GHz) and FR5 (114.25GHz-300GHz). Each of these higher frequency bands falls within the EHF band.

[0044] In view of the above examples, unless otherwise explicitly stated, it should be understood that if the term "sub-6 GHz" or the like is used herein, the term can be broadly referred to as a frequency that can be lower than 6 GHz, can be within FR1, or can include mid-band frequencies. In addition, unless otherwise explicitly stated, it should be understood that if the term "millimeter wave" or the like is used herein, the term can be broadly referred to as a frequency that can include mid-band frequencies, can be within FR2, FR4, FR4-a or FR4-1 and / or FR5, or can be within the EHF band. It is contemplated that the frequencies included in these operating bands (e.g., FR1, FR2, FR3, FR4, FR4-a, FR4-1, and / or FR5) can be modified, and the techniques described herein are applicable to those modified frequency ranges.

[0045] In some aspects, UE 120 may include a communication manager 140. As described in greater detail elsewhere herein, the communication manager 140 may: send information indicating a duplex mode of UE 120 to the set of second UEs, wherein the duplex mode indicates one or more receive intervals of UE 120 and one or more transmit intervals of UE 120; and communicate according to the duplex mode. Additionally or alternatively, the communication manager 140 may perform one or more other operations described herein.

[0046] As pointed out above, Figure 1 is provided as an example. Other examples may differ from those described above. Figure 1 Examples described.

[0047] Figure 2 2 is a schematic diagram showing an example 200 of a network node 110 communicating with a UE 120 in a wireless network 100 according to the present disclosure. The network node 110 may be equipped with a set of antennas 234a to 234t, such as T antennas (T≥1). The UE 120 may be equipped with a set of antennas 252a to 252r, such as R antennas (R≥1). The network node 110 of example 200 includes one or more radio frequency components, such as an antenna 234 and a modem 254. In some examples, the network node 110 may include an interface, a communication component, or another component that facilitates communication with the UE 120 or another network node. Some network nodes 110 may not include a radio frequency component that facilitates direct communication with the UE 120, such as one or more CUs or one or more DUs.

[0048] At the network node 110, a transmit processor 220 may receive data intended for a UE 120 (or a set of UEs 120) from a data source 212. The transmit processor 220 may select one or more modulation and coding schemes (MCS) for the UE 120 based at least in part on one or more channel quality indicators (CQIs) received from the UE 120. The network node 110 may process (e.g., encode and modulate) the data for the UE 120 based at least in part on the MCS selected for the UE 120, and provide data symbols for the UE 120. The 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) and secondary synchronization signals (SSS)). If applicable, the transmit (TX) multiple-input multiple-output (MIMO) processor 230 may perform spatial processing (e.g., precoding) on ​​data symbols, control symbols, overhead symbols, and / or reference symbols, 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 to 232t). For example, each output symbol stream may be provided to a modulator component (shown as MOD) of the modem 232. Each modem 232 may process a corresponding output symbol stream (e.g., for OFDM) using a corresponding modulator component to obtain an output sample stream. Each modem 232 may further 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. The modems 232a to 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 to 234t).

[0049] At the UE 120, a set of antennas 252 (shown as antennas 252a to 252r) may receive downlink signals from the network node 110 and / or other network nodes 110, and may provide a set of received signals (e.g., R received signals) to a set of modems 254 (e.g., R modems) (shown as modems 254a to 254r). For example, each received signal may be provided to a demodulator component (shown as DEMOD) of the modem 254. Each modem 254 may use a corresponding demodulator component to condition (e.g., filter, amplify, downconvert, and / or digitize) the received signal to obtain input samples. Each modem 254 may use a demodulator component to further process the input samples (e.g., for OFDM) to obtain received symbols. A MIMO detector 256 may obtain received symbols from the modem 254, may perform MIMO detection on the received symbols (if applicable), and may provide detected symbols. The receive processor 258 may process (e.g., demodulate and decode) the detected symbols, may provide decoded data for the UE 120 to the data sink 260, and may provide decoded control information and system information to the 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 things. In some examples, one or more components of the UE 120 may be included in the housing 284.

[0050] The network controller 130 may include a communication unit 294, a controller / processor 290, and a memory 292. The network controller 130 may include, for example, one or more devices in a core network. The network controller 130 may communicate with the network node 110 via the communication unit 294.

[0051] One or more antennas (e.g., antennas 234a to 234t and / or antennas 252a to 252r) may include or be included within one or more antenna panels, one or more antenna groups, one or more sets of antenna elements, and / or one or more antenna arrays, as well as other examples. Antenna panels, antenna groups, sets of antenna elements, and / or antenna arrays may include one or more antenna elements (in a single housing or multiple housings), sets of coplanar antenna elements, sets of non-coplanar antenna elements, and / or be coupled to one or more transmit and / or receive components (such as, Figure 2One or more antenna elements of one or more components in.

[0052] On the uplink, at the UE 120, a transmit processor 264 may receive and process data from a data source 262 and control information from a controller / processor 280 (e.g., for reports including RSRP, RSSI, RSRQ, and / or CQI). The transmit processor 264 may generate reference symbols for one or more reference signals. The symbols from the transmit processor 264 may be precoded by a TX MIMO processor 266 (if applicable), further processed by a modem 254 (e.g., for DFT-s-OFDM or CP-OFDM), and sent to the network node 110. In some examples, the modem 254 of the UE 120 may include a modulator and a demodulator. In some examples, the UE 120 includes a transceiver. The transceiver may include any combination of an antenna 252, a modem 254, a MIMO detector 256, a receive processor 258, a transmit processor 264, and / or a 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 Figure 3-12 ).

[0053] At the network node 110, uplink signals from the UE 120 and / or other UEs may be received by an antenna 234, processed by a modem 232 (e.g., a demodulator component of the modem 232, shown as DEMOD), detected by a MIMO detector 236 (if applicable), and further processed by a receive processor 238 to obtain decoded data and control information sent by the UE 120. The receive processor 238 may provide the decoded data to a data sink 239 and provide the decoded control information to a controller / processor 240. The network node 110 may include a communication unit 244 and may communicate with the network controller 130 via the communication unit 244. The network node 110 may include a scheduler 246 to schedule one or more UEs 120 for downlink and / or uplink communications. In some examples, the modem 232 of the network node 110 may include a modulator and a demodulator. In some examples, the network node 110 includes a transceiver. The transceiver may include any combination of antenna(s) 234, modem(s) 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 Figure 3-12 ).

[0054] As described in greater detail elsewhere herein, the controller / processor 240 of the network node 110, the controller / processor 280 of the UE 120, and / or Figure 2 Any other components of the UE 120 may perform one or more techniques associated with sidelink communication. For example, the controller / processor 240 of the network node 110, the controller / processor 280 of the UE 120, and / or Figure 2 Any other component may perform or direct e.g. Fig.11 1100, and / or operations of other processes as described herein. Memory 242 and memory 282 may store data and program codes for network node 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, one or more instructions, when executed by one or more processors of network node 110 and / or UE 120 (e.g., directly, or after compilation, conversion, and / or interpretation), may cause one or more processors, UE 120, and / or network node 110 to perform or direct, for example, Fig.11 The process 1100 of , and / or the operations of other processes described herein. In some examples, executing instructions may include running instructions, converting instructions, compiling instructions, and / or interpreting instructions, etc.

[0055] In some aspects, a first UE (e.g., UE 120) includes: means for sending information indicating a duplex mode of the first UE to a set of second UEs, wherein the duplex mode indicates one or more receive intervals of the first UE and one or more transmit intervals of the first UE; and / or means for communicating according to the duplex mode. The means for the first UE to perform the operations described herein may include, for example, one or more of the communication manager 140, the antenna 252, the modem 254, the MIMO detector 256, the receive processor 258, the transmit processor 264, the TX MIMO processor 266, the controller / processor 280, or the memory 282.

[0056] Although Figure 2 The blocks in the 200 are shown as distinct components, but the functions described above with reference 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 the transmit processor 264, the receive processor 258, and / or the TX MIMO processor 266 may be performed by or under the control of the controller / processor 280.

[0057] As pointed out above, Figure 2 is provided as an example. Other examples may differ from those described above. Figure 2 Examples described.

[0058] The deployment of a communication system (such as a 5G NR system) can be arranged in a variety of ways, with various components or parts. In a 5G NR system or network, a network node, a network entity, a mobility element of a network, a RAN node, a core network node, a network element, a base station or a network device can be implemented in an aggregated or deaggregated architecture. For example, a base station (such as a Node B (NB), an evolved NB (eNB), an NR BS, a 5G NB, an access point (AP), a TRP or a cell, etc.) or one or more units (or one or more components) that perform base station functionality can be implemented as an aggregated base station (also referred to as an independent base station or an integral base station) or a deaggregated base station. A "network entity" or a "network node" may refer to a deaggregated base station or one or more units of a deaggregated base station (such as one or more CUs, one or more DUs, one or more RUs, or a combination thereof).

[0059] An aggregated base station (e.g., an aggregated network node) can 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). A deaggregated base station (e.g., a deaggregated network node) can be configured to utilize a protocol stack that is physically or logically distributed between two or more units (such as, one or more CUs, one or more DUs, or one or more RUs). In some examples, the CU can be implemented within a network node, and one or more DUs can be co-located with the CU, or alternatively, can be distributed geographically or virtually across one or more other network nodes. The DU can be implemented to communicate with one or more RUs. Each of the CU, DU, and RU can also be implemented as a virtual unit, such as a virtual central unit (VCU), a virtual distributed unit (VDU), or a virtual radio unit (VRU), etc.

[0060] The operation or network design of the base station type may take into account the aggregation characteristics of the base station functions. For example, a deaggregated base station may be used in an IAB network, an open radio access network (O-RAN (such as a network configuration initiated by the O-RAN Alliance)) or a virtualized radio access network (vRAN, also known as a cloud radio access network (C-RAN)) to facilitate the scaling of the communication system by dividing the base station functionality into one or more units that can be deployed separately. A deaggregated base station may include functionality implemented across two or more units at various physical locations, as well as functionality implemented virtually for at least one unit, which enables flexibility in network design. Individual units of a deaggregated base station may be configured for wired or wireless communication with at least one other unit of the deaggregated base station.

[0061] Figure 3 3 is a schematic diagram illustrating an example 300 of sidelink communications according to the present disclosure. Sidelink communications may be used for a variety of use cases, including exchanging safety-related messages for V2X communications, relaying communications from another UE to a network or vice versa, and other examples. In some examples, sidelink communications may occur in a licensed frequency band, such as a licensed sub-7-GHz frequency band. In some other aspects, sidelink communications may occur in an unlicensed frequency band.

[0062] like Figure 3 As shown in , the first UE 305-1 can communicate with the second UE 305-2 (and one or more other UEs 305) via one or more sidelink channels 310. UE 305-1 and 305-2 can communicate using one or more sidelink channels 310 for P2P communication, D2D communication, V2X communication (e.g., which may include V2V communication, V2I communication and / or V2P communication) and / or mesh network. In some aspects, UE 305 (e.g., UE 305-1 and / or UE 305-2) can correspond to one or more other UEs (such as UE 120) described elsewhere herein. In some aspects, one or more sidelink channels 310 can use a PC5 interface and / or can operate in a high frequency band (e.g., 5.9 GHz band). Additionally or alternatively, the UE 305 may synchronize the timing of transmission time intervals (TTIs) (eg, frames, subframes, time slots, or symbols) using global navigation satellite system (GNSS) timing.

[0063] like Figure 3As further shown in FIG. 1 , the one or more sidelink channels 310 may include a physical sidelink control channel (PSCCH) 315, a physical sidelink shared channel (PSSCH) 320, and / or a physical sidelink feedback channel (PSFCH) 325. Similar to a physical downlink control channel (PDCCH) and / or a physical uplink control channel (PUCCH) used for cellular communication with the network node 110 via an access link or access channel, the PSCCH 315 may be used to transmit control information. Similar to a physical downlink shared channel (PDSCH) and / or a physical uplink shared channel (PUSCH) used for cellular communication with the network node 110 via an access link or access channel, the PSSCH 320 may be used to transmit data. For example, the PSCCH 315 may carry sidelink control information (SCI) 330, which may indicate various control information for sidelink communications, such as one or more resources (e.g., time resources, frequency resources, and / or space resources), where a transport block (TB) 335 may be carried on the PSSCH 320. The TB 335 may include data. The PSFCH 325 may be used to transmit sidelink 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).

[0064] Although shown on PSCCH 315, in some aspects 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 sent on PSCCH 315. SCI-2 may be sent 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 sidelink communications on PSSCH, a quality of service (QoS) priority value, a resource reservation period, a PSSCH demodulation reference signal (DMRS) pattern, an SCI format for SCI-2, a beta offset for SCI-2, a number of PSSCH DMRS ports, and / or a modulation and coding scheme (MCS). SCI-2 may include information associated with data transmission on the PSSCH 320, such as a hybrid automatic repeat request (HARQ) process ID, a new data indicator (NDI), a source identifier, a destination identifier, and / or a channel state information (CSI) report trigger.

[0065] In some aspects, one or more sidelink channels 310 may use a resource pool. A resource pool is a configured set of resources used for sidelink communications. A resource pool may be associated with various configuration parameters. Scheduling assignments (e.g., included in SCI 330) may be sent in a subchannel using specific resource blocks (RBs) across time. In some aspects, a data transmission associated with a scheduling assignment (e.g., on PSSCH 320) may occupy adjacent RBs in the same subframe as the scheduling assignment (e.g., using frequency division multiplexing). In some aspects, the scheduling assignment and the associated data transmission are not sent on adjacent RBs.

[0066] In some aspects, UE 305 may operate using a sidelink transmission mode (e.g., Mode 1) in which resource selection and / or scheduling is performed by network node 110. For example, UE 305 may receive a grant (e.g., in downlink control information (DCI) or in a radio resource control (RRC) message, such as for a configured grant) from network node 110 for sidelink channel access and / or scheduling. In some aspects, UE 305 may operate using a transmission mode (e.g., Mode 2) in which resource selection and / or scheduling is performed by UE 305 (e.g., instead of network node 110). In some aspects, UE 305 may perform resource selection and / or scheduling by sensing channel availability for transmission. For example, UE 305 may measure received signal strength indicator (RSSI) parameters associated with various sidelink channels (e.g., sidelink RSSI (S-RSSI) parameters), may measure reference signal received power (RSRP) parameters associated with various sidelink channels (e.g., PSSCH-RSRP parameters), and / or may measure reference signal received quality (RSRQ) parameters associated with various sidelink channels (e.g., PSSCH-RSRQ parameters), and may select a channel for transmission of sidelink communications based at least in part on the measurements.

[0067] Additionally or alternatively, the UE 305 may perform resource selection and / or scheduling using the SCI 330 received in the PSCCH 315, which may indicate occupied resources and / or channel parameters. Additionally or alternatively, the UE 305 may perform resource selection and / or scheduling by determining a channel busy rate (CBR) associated with each sidelink channel, 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).

[0068] Based at least in part on pre-configuration, a sidelink UE (e.g., UE 305) can communicate using resources from a mode 2 based resource pool in the absence of a cellular network. To support a dynamic peer-to-peer network topology, mode 2 UEs contend for channel access using sensing and / or reservation based random access. OFDM can be used to increase the number of random access channels to support a large number of UEs (each of which carries a low or medium provided load on the channel). Time domain non-continuous retransmission can be used to mitigate half-duplex deafness, such as in a broadcast or multicast context. There are various techniques for improving stability in mode 2, such as inter-UE coordination, discontinuous reception (DRX), and partial sensing.

[0069] In a transmission mode in which resource selection and / or scheduling is performed by the UE 305, the UE 305 may generate a sidelink grant and may send the grant in the SCI 330. The sidelink grant may indicate, for example, one or more parameters (e.g., transmission parameters) for an upcoming sidelink transmission, such as one or more resource blocks (e.g., for TB 335) to be used for the upcoming sidelink transmission on the PSSCH 320, one or more subframes to be used for the upcoming sidelink transmission, and / or a modulation and coding scheme (MCS) to be used for the upcoming sidelink transmission. In some aspects, the UE 305 may generate a sidelink grant indicating one or more parameters for semi-persistent scheduling (SPS), such as the periodicity of the sidelink transmission. Additionally or alternatively, the UE 305 may generate a sidelink grant for event-driven scheduling, such as for an on-demand sidelink message.

[0070] As pointed out above, Figure 3 is provided as an example. Other examples may differ from those described above. Figure 3 Examples described.

[0071] Figure 4 is a diagram illustrating an example 400 of sidelink communications and access link communications according to the present disclosure.

[0072] like Figure 4 As shown in FIG. 1 , the transmitting (Tx) / receiving (Rx) UE 405 and the Rx / Tx UE 410 may communicate with each other via a side link, as described above in conjunction with Figure 3As further shown, in some sidelink modes, the network node 110 may communicate with the Tx / Rx UE 405 via the first access link. Additionally or alternatively, in some sidelink modes, the network node 110 may communicate with the Rx / Tx UE 410 via the second access link. The Tx / Rx UE 405 and / or the Rx / Tx UE 410 may communicate with one or more UEs described elsewhere herein (such as Figure 1 120). Thus, a direct link between UE 120 (e.g., via a PC5 interface) may be referred to as a sidelink, and a direct link between network node 110 and UE 120 (e.g., via a Uu interface) may be referred to as an access link. Sidelink communications may be sent via a sidelink, and access link communications may be sent via an access link. Access link communications may be downlink communications (from network node 110 to UE 120) or uplink communications (from UE 120 to network node 110).

[0073] As mentioned above, sidelink communications may be deployed in unlicensed frequency bands. As used herein, an unlicensed frequency band is a frequency band associated with a decentralized channel access mechanism. Examples of unlicensed frequency bands include FR1 unlicensed frequency bands (such as 5 GHz or 6 GHz unlicensed frequency bands, where WiFi, unlicensed NR (NR-U) and licensed assisted access (LAA) technologies use decentralized channel access mechanisms to share spectrum), FR2 unlicensed frequency bands, and FR2-2 unlicensed frequency bands. In some examples, sidelink communications deployed in new frequency bands (such as unlicensed frequency bands) may have use cases such as enhanced mobile broadband (eMBB), extended reality (XR), and the like. In some examples, such deployments may use a star topology in which links are relatively sparse, utilizing unicast communications as the dominant form of communication (compared to groupcast or broadcast communications). Such deployments may be associated with higher data rates, stricter quality of service requirements, and / or higher load levels than traditional sidelink deployments.

[0074] Challenges may arise regarding the deployment of sidelink communications in unlicensed bands. As an example, the use of channel occupation time (COT) based transmissions (allowed by regulations to improve channel access efficiency in 5GHz / 6GHz unlicensed bands) appears to favor time division multiplexing (TDM) on contiguous time slots, while traditional NR sidelinks tend to involve communications using OFDMA on non-contiguous time slots. In addition, requirements from some regulations for occupied channel bandwidth (OCB) may result in the use of staggered waveforms as in NR-U, where a single channel access occupies non-contiguous resource blocks extending by at least 20MHz (sometimes referred to as LBT sub-bands). Staggered waveforms may exacerbate inter-block interference (IBI). Therefore, the system may prefer TDM-based channel access and may use OFDMA only in cases where IBI is well controlled (such as, by gNB scheduling in Mode 1).

[0075] Some sidelink UEs may operate in half-duplex mode. In half-duplex mode, the UE may transmit or receive at a given time, but not both at the same time. For example, in time division duplex (TDD), the UE may not be able to receive during the UE's transmission. The inability to receive during transmission is called half-duplex deafness. Such sidelink deployments have resorted to non-continuous retransmissions to mitigate half-duplex deafness. Issues with IBI may limit the use of OFDMA in unlicensed bands for sidelink communications.

[0076] As mentioned above, COT-based transmissions can be used to provide channel access efficiency in unlicensed bands, such as those using decentralized access mechanisms such as listen-before-talk (LBT). For Type 1 LBT, a device backs off for a random time period before accessing the channel, which is sampled from a contention window of variable size. For example, if a transmission fails (e.g., the number of NACKs exceeds a threshold number), the contention window size may be doubled. After a successful Type 1 LBT, a node may be allowed to transmit continuously for up to 10ms. Therefore, collisions may last up to 10ms, resulting in a doubled contention window size. In some network topologies, such as a star topology, a node (e.g., a central node of a star topology) may experience starvation due to frequent collisions in communications with nodes.

[0077] Some techniques described herein provide signaling of a duplex mode of a first UE provided to one or more second UEs (e.g., one or more other sidelink UEs) by a first UE (e.g., a sidelink UE). The duplex mode may indicate at least one of the following: one or more receive intervals and / or one or more transmit intervals of the first UE, as well as other examples. The signaling may be broadcast signaling, multicast signaling, unicast signaling, or a combination thereof. By signaling the duplex mode, the first UE and one or more second UEs may improve the efficiency and reliability of channel access, such as by avoiding transmission by the second UE at the transmit interval of the first UE, selecting resources for transmission of the second UE during the receive interval of the first UE, and / or other examples described herein. In this way, the impact of half-duplex deafness is reduced, TDM communication in an unlicensed band (which reduces IBI) is achieved, and deployment of sidelink communication in an unlicensed band is achieved.

[0078] According to some techniques described herein, in a sidelink resource pool based on resource allocation mode 2, a sidelink UE may specify and notify other devices of the duplex mode of the sidelink UE to improve channel access efficiency for the sidelink resource pool. For example, the sidelink UE may broadcast information (statically or semi-statically) indicating a duplex mode indicating when the sidelink UE will be in a receive mode (referred to herein as a receive interval) so that any other UE (such as a UE that does not have a unicast connection with the sidelink UE) can reliably transmit to the sidelink UE during these intervals. As another example, the sidelink UE may multicast information to a collection of UEs (e.g., with which the sidelink UE has a unicast connection) indicating when the sidelink UE will be in a transmit mode (such as when the sidelink UE will be deaf to reception, and referred to herein as a transmit interval or a deaf interval) or a receive mode (so that any other UE can seek micro-sleep opportunities during such intervals). As yet another example, when a sidelink UE will be in transmit mode or receive mode in a set of intervals (among intervals not yet specified above), the sidelink UE may be (statically or semi-statically) aligned with a unicast-paired UE (a UE with which the sidelink UE has a unicast connection). In addition, these intervals may be triggered to be active (and may fall back to inactive) based on conditions such as CSI reporting and / or sidelink BSR reporting. In some aspects, the sidelink UE may use SCI to dynamically reconfigure the duplex mode after obtaining the channel occupancy time (COT) via Type 1 LBT.

[0079] As pointed out above, Figure 4 is provided as an example. Other examples may differ from those described above. Figure 4 Examples described.

[0080] Figure 5 5 is a schematic diagram showing an example 500 of signaling associated with a duplex mode for sidelink communication according to the present disclosure. As shown, example 500 includes a first UE (e.g., UE 120, UE 305, UE 405, UE 410) and a set of second UEs (e.g., UE 120, UE 305, UE 405, UE 410). The set of second UEs may include one or more UEs. In some aspects, the second UE in the set of second UEs may be associated with a unicast connection with the first UE. In some other aspects, the second UE in the set of second UEs may not have a unicast connection with the first UE. In some aspects, the set of first UE and second UE may be configured with a sidelink resource pool. For example, the set of first UE and second UE may be configured to use the same sidelink resource pool to perform sidelink communication. In some aspects, the sidelink resource pool is configured for UE selection of resources for communication (e.g., mode 2 resource allocation). In some aspects, the set of first UE and second UE may perform in an unlicensed frequency band. Figure 5-10 In some other aspects, the set of first UE and second UE may perform in a licensed band. Figure 5-10 operation (e.g., the duplex mode may be with respect to resources in a licensed frequency band).

[0081] like Figure 5In and as shown by reference numeral 505, in some aspects, a set of first UEs and / or second UEs may be configured with a set of duplex modes. For example, in some aspects, a first UE may select a duplex mode from a set of duplex modes and may send an indication of the selected duplex mode, as described below. Pre-configuration of a set of duplex modes may reduce the overhead associated with signaling the selected duplex mode compared to explicitly signaling the duplex mode to a set of second UEs. In some aspects, a configuration of a sidelink resource pool used by a set of first UEs and second UEs (e.g., a layer 3 configuration, such as an RRC configuration) may indicate a set of duplex modes. For example, the configuration of the sidelink resource pool may indicate a mapping from a UE identifier (e.g., a portion of a UE identifier, such as a partial UE identifier) ​​to a duplex mode, such that the second UE may identify the duplex mode based at least in part on a UE identifier (or a portion of a UE identifier) ​​associated with the first UE. For example, sidelink control information associated with a communication may indicate a UE identifier (e.g., a phase 2 sidelink control information may carry a source UE identifier and a destination UE identifier). Therefore, through the above mapping in the configuration, any other UE can determine how to reliably reach the source UE or destination UE of the communication in a specific transmission interval or reception interval.

[0082] As indicated by reference numeral 510, the first UE may send information indicating a duplex mode, and the set of second UEs may receive information indicating a duplex mode. In some aspects, the information indicating the duplex mode may indicate a selected duplex mode. For example, the selected duplex mode may be selected from a set of duplex modes (as indicated by reference numeral 505), and a layer 1 or layer 2 (such as sidelink control information or a medium access control element (MAC-CE)) indication may indicate the selected duplex mode from the set of duplex modes. In some aspects, the information indicating the duplex mode may include information indicating a UE identifier (or portion of a UE identifier) ​​that the second UE may use to identify a duplex mode associated with the first UE.

[0083] In some aspects, sending the information indicating the duplex mode is associated with the unicast connection establishment. For example, the first UE may provide the information indicating the duplex mode as part of the unicast connection establishment (such as via messages exchanged during the unicast connection establishment), which may be considered as a layer-3-only provision of the information indicating the duplex mode. As another example, the first UE may use a multicast shared channel (e.g., a MAC-CE sent in a multicast PSSCH) to multicast the information indicating the duplex mode to the set of second UEs, which may be considered as a layer-2 provision of the information indicating the duplex mode. Thus, the UE may multicast the information indicating the duplex mode to the set of second UEs.

[0084] In some aspects, the first UE may send information indicating a duplex mode via an RRC message (such as a PC5-RRC message). For example, the first UE may send a duplex mode (such as a per-UE duplex mode) to a second UE in a set of second UEs via PC5-RRC signaling. In this example, the first UE and the second UE may exchange duplex modes via PC5-RRC signaling.

[0085] The duplex mode may indicate at least one of the following: one or more receiving intervals and / or one or more sending intervals for the first UE. In some aspects, the receiving interval is a time interval (e.g., a set of time resources) in which the first UE is configured to receive communications or can be used to receive communications. In some aspects, the receiving interval is a time interval in which the first UE is configured to receive but not to send or can be used to receive but not to send. In some aspects, the sending interval is a time interval in which the first UE is configured to send communications. In some aspects, the sending interval is a time interval in which the first UE is configured to send but not to receive. In some aspects, the sending interval is a time interval in which the first UE has reserved or indicated for the transmission of the first UE.

[0086] The duplex mode may include multiple transmit intervals and / or multiple receive intervals. In some aspects, the first UE may be associated with multiple duplex modes (such as different duplex modes for different sets of second UEs). In some aspects, the first UE may be associated with a single duplex mode that includes multiple transmit intervals and / or multiple receive intervals associated with different second UEs. Figure 6 6 is a schematic diagram illustrating an example 600 of a duplex mode according to the present disclosure. The duplex mode of example 600 only illustrates a receive interval, but in some aspects, the duplex mode may additionally or alternatively include one or more transmit intervals.

[0087] like Figure 6 As shown in FIG. 6 , a first set of reception intervals 605 are configured for a resource pool (shown as “RP-based”), a second set of reception intervals 610 are associated with a group of UEs (shown as “group-based”), and a third set of reception intervals 615 are associated with individual UEs (shown as “per-UE”). Figure 5As described in reference numeral 510 of , the first UE may send information indicating a duplex mode to UEs associated with the reception intervals 605, 610, 615. For example, the first UE may send information indicating a first set of reception intervals 605 to a set of second UEs associated with the same resource pool as the first UE. As another example, the first UE and the set of second UEs associated with the same resource pool as the first UE may both be configured with information indicating the first set of reception intervals 605 (by the first UE or by a network node). Therefore, the first set of reception intervals 605 may be known to all UEs associated with the resource pool (which may include UEs that do not have a unicast connection with the first UE).

[0088] As another example, the first UE may multicast information indicating a second set of receive intervals 610 to a set of second UEs. For example, the first UE may multicast information indicating a second set of receive intervals 610 to a set of second UEs, each of which has a corresponding unicast connection with the first UE, and the second UEs are configured with the same resource pool as the first UE. This may be beneficial because if the set of second UEs are communicating only with the first UE, the set of second UEs may seek micro-sleep opportunities in the second set of receive intervals 610.

[0089] As another example, the first UE may send information indicating a third set of receive intervals 615 to the second UE. For example, the first UE may send the information to the second UE, where the second UE is unicast paired with the first UE. In such an example, the second UE may have a service flow with the first UE (such as, via a unicast connection with the first UE). For example, the service flow may be associated with a quality of service requirement. By signaling the third set of receive intervals 615 to the second UE, the second UE may take the receive interval into account when selecting resources and / or configuring communications associated with the service flow, thereby ensuring that the quality of service requirement is met.

[0090] In some aspects, the duplex modes described herein may be considered static or semi-static. A static or semi-static duplex mode is a duplex mode that is assumed to be applicable until modified by other signaling. For example, a static or semi-static duplex mode may be applicable until deconfigured, until replaced with another static or semi-static duplex mode, or until modified by SCI signaling, as described in more detail elsewhere herein.

[0091] As mentioned above, the first UE may be associated with (e.g., configured with) a sidelink resource pool. Intervals of a duplex mode (e.g., receive intervals, transmit intervals, and / or deaf intervals, which are described elsewhere herein) may be selected from resources of the sidelink resource pool. Thus, the duplex mode may indicate whether resources of the resource pool are used for transmit, receive, deaf intervals, or none of the above intervals. In this way, the resources of the sidelink resource pool may be considered flexible (e.g., subsequently configurable as resources for transmit, receive, or another purpose) until otherwise configured via the duplex mode.

[0092] In some aspects, the duplex mode may indicate one or more deaf intervals. A deaf interval is an interval in which the first UE is not configured (or is not able or available) to receive communications from a second UE that receives the duplex mode. In some aspects, the deaf interval may at least partially overlap with the transmit interval, such as in conjunction with Figure 8 The indication of the deaf interval may enable the set of second UEs to avoid selecting resources for transmission to the first UE during the deaf interval, thereby improving the efficiency of the sidelink communication.

[0093] Figure 7 700 is a schematic diagram illustrating an example of a relationship between deaf intervals of a duplex mode according to the present disclosure. A first UE may send information indicating a duplex mode having one or more deaf intervals, and a set of second UEs may receive information indicating a duplex mode having one or more deaf intervals. In some aspects, as described above, the set of second UEs may include all UEs configured with the same resource pool as the first UE. In this example, the one or more deaf intervals may be known to all UEs in the resource pool. In some aspects, as described above, the set of second UEs may include a set of UEs, such as a set of UEs to which the duplex mode is multicast. In some aspects, the set of second UEs may include unicast paired UEs (e.g., a single second UE), as described above. In some aspects, different sets of deaf intervals may be indicated for these sets of UEs. For example, a first set of deaf intervals 705 may be indicated for all UEs configured with the same resource pool as the first UE. A second set of deaf intervals 710 (which in some examples may be selected from the first set of deaf intervals 705) may be signaled to the set of UEs, such as via multicast signaling. A third set of deaf intervals 715 (which in some examples may be selected from the first set of deaf intervals 705 and / or the second set of deaf intervals 710) may be signaled to the unicast paired UE. In some examples, the sets of deaf intervals 705, 710, and / or 715 may not overlap. For example, these sets of deaf intervals may not include the same deaf intervals.

[0094] In some aspects, the transmit interval may at least partially overlap with the deaf interval. For example, while transmitting, a first UE associated with half-duplex deafness (such that the first UE can only transmit or receive at a given time, but not both) may be deaf for reception. The first UE may send information indicating a duplex mode including a deaf interval and a transmit interval to a set of second UEs. Figure 8 800 is a schematic diagram illustrating an example of a relationship between a transmit interval and a deaf interval of a duplex mode according to the present disclosure. As shown, a transmit interval 805 may be included in a deaf interval 810. In some aspects, the transmit interval 805 may partially overlap with the deaf interval 810. In some aspects, the deaf interval 810 may include multiple transmit intervals 805. In some aspects, a first UE may send information indicating a first duplex mode to a first set of second UEs (e.g., all UEs associated with the same resource pool as the first UE), and may send information indicating a second duplex mode to a second set of second UEs (e.g., a group of UEs in the first set of second UEs, or unicast paired UEs). The first duplex mode may indicate the deaf interval 810, and the second duplex mode may indicate one or more transmit intervals 805 within the deaf interval 810.

[0095] Return to Figure 5 In some aspects, a duplex mode may be associated with a condition. The condition may trigger activation of the duplex mode (causing the set of the first UE and the second UE to begin communicating according to the duplex mode) or deactivation of the duplex mode (causing the set of the first UE and the second UE to terminate communication according to the duplex mode and / or to begin communication according to a different duplex mode). As shown by reference numeral 515, in some aspects, the set of the first UE and the second UE may activate the duplex mode indicated by reference numeral 510. For example, the activation may be based at least in part on the condition being satisfied.

[0096] Fig. 9900 is a schematic diagram showing an example of a condition associated with a duplex mode according to the present disclosure. Example 900 shows a condition associated with a buffer status report (BSR) size. The BSR size is the number of bits stored in a buffer of a first UE, as indicated by a BSR. The first UE may send a BSR indicating the BSR size to a set of second UEs. The BSR size is shown by reference numeral 910. The condition associated with the duplex mode is shown by a dashed line shown by reference numeral 920. The dashed line may represent a BSR size threshold. If the BSR size indicated by the BSR meets the BSR size threshold (such as, at reference numeral 930), the first UE and the set of second UEs may activate the duplex mode, as shown by reference numeral 940. For example, the duplex mode (or the receiving interval, sending interval, or deaf interval of the duplex mode) may become active only after the sidelink handshake report buffer status exceeds a predefined threshold. If the BSR size indicated by the BSR fails to meet the BSR size threshold, the duplex mode (or the receiving interval, sending interval, or deaf interval of the duplex mode) may become inactive. For example, the duplex mode may fall back to an inactive state after the handshake report buffer status becomes less than a BSR size threshold or another threshold (which may indicate a different BSR size that may be above or below the BSR size threshold). By selectively activating or deactivating the duplex mode based on the BSR size threshold, the efficiency of the sidelink communication may be improved in cases where the buffer size is relatively large (which may increase throughput), and the flexibility of the sidelink communication may be improved in cases where the buffer size is relatively small (which may provide improved adaptability to scheduling given channel conditions).

[0097] In some aspects, the condition may be associated with a channel state of a channel associated with the first UE. For example, the condition may be based at least in part on channel state information (CSI) derived from a channel associated with the first UE, such as based at least in part on a set of measured reference signals (e.g., sidelink reference signals, CSI reference signals, etc.) of the first UE or the second UE. In this example, a duplex mode or an interval of a duplex mode may become active when a CSI threshold associated with the duplex mode is met, and may become inactive when a CSI threshold or a different CSI threshold associated with the duplex mode is no longer met (the different CSI threshold may be higher). By selectively activating or deactivating a duplex mode based on a CSI threshold, the efficiency of sidelink communications may be improved when conditions of the channel are relatively poor (which may improve throughput and avoid further degradation of the channel), and the flexibility of sidelink communications may be improved when conditions of the channel are relatively good (which may provide improved adaptability to scheduling in view of channel conditions).

[0098] In some aspects, the condition (e.g., a threshold associated with the condition) may be predefined. For example, the condition may be indicated by information indicating a duplex mode. As another example, the condition may be indicated by a configuration of a resource pool. As yet another example, the condition may be specified in a wireless communication specification. As yet another example, the condition may be negotiated by a set of the first UE and the second UE.

[0099] Back to Figure 5 In some aspects, the first UE may send an indication to modify the duplex mode. For example, the first UE may send the indication via the SCI, or the indication may be the SCI (e.g., layer 1 signaling). The modified duplex mode may change the state of one or more resources (e.g., one or more time slots, one or more symbols, etc.) of the duplex mode. For example, the modified duplex mode may add a transmit interval, a receive interval, or a deaf interval to the duplex mode. As another example, the modified duplex mode may remove a transmit interval, a receive interval, or a deaf interval from the duplex mode. As another example, the modified duplex mode may extend or shorten the transmit interval, the receive interval, or the deaf interval. As another example, the modified duplex mode may change the resources of the transmit interval to the resources of the deaf interval or the receive interval, may change the resources of the deaf interval to the resources of the transmit interval or the receive interval, or may change the resources of the receive interval to the resources of the transmit interval or the deaf interval.

[0100] In some aspects, the modified duplex mode may be based at least in part on obtaining a COT, such as according to an LBT procedure (e.g., LBT Type 1). For example, the first UE may obtain the COT and may send an SCI that modifies the duplex mode after obtaining the COT. In some aspects, the modified duplex mode may be pre-configured. For example, the duplex mode may be pre-configured via static signaling or semi-static signaling. In some aspects, the SCI that modifies the duplex mode may include an index corresponding to the pre-configured duplex mode so that the overhead of the SCI may be reduced. Fig.101000 and 1005 are schematic diagrams illustrating examples of COTs associated with a duplex mode according to the present disclosure. In example 1000, a UE obtains a COT 1010 (e.g., according to a Type 1 LBT procedure). The UE may send information (such as COT structure information, etc.) to modify the duplex mode 1015 so that a transmit interval 1020 exists within the COT 1010. The COT 1010 is illustrated as an "MCOT" because the COT is associated with a maximum time length, referred to as a maximum COT (MCOT). For example, the transmit interval may occupy a previously flexible resource in a resource pool within the COT 1010. As further shown, the transmit interval 1020 may end before any existing receive interval (such as receive interval 1025) of the duplex mode (e.g., before the MCOT time length has elapsed).

[0101] Example 1005 is an example involving COT sharing. In COT sharing, one UE may share its COT with another UE. For example, a first UE may invite a second UE in a set of second UEs to perform a transmission to the first UE in the COT obtained by the first UE. In example 1005, if resource 1030 has been previously indicated as belonging to a deaf interval or a transmit interval of the first UE, the first UE may not share resource 1030 of COT 1035 with the second UE. For example, if resource 1030 has been previously indicated as belonging to a deaf interval or a transmit interval of the first UE, the first UE may not be allowed to share resource 1030. For example, if resource 1030 has been previously indicated as belonging to a deaf interval or a transmit interval of the first UE, the first UE may avoid sharing resource 1030.

[0102] Back to Figure 5, as indicated by reference numeral 520, the first UE may select resources for transmission of the first UE. For example, the first UE may select resources based at least in part on the duplex mode of the first UE. Additionally or alternatively, as indicated by reference numeral 525, a second UE in the set of second UEs may select resources for transmission of one or more second UEs. For example, the second UE may select resources based at least in part on the duplex mode of the first UE. As indicated by reference numeral 530, the first UE and / or the second UE may perform communications, such as transmissions by the first UE using the resources selected in conjunction with reference numeral 520 and / or transmissions by the second UE using the resources selected in conjunction with reference numeral 525. In some aspects, the first UE may select resources included in a transmission interval of the first UE. In some aspects, the first UE may select resources included in a deaf interval of the first UE. In some aspects, the first UE may prioritize the selection of resources in one or more transmission intervals. For example, the UE may prioritize the selection of resources included in the transmission interval for the transmission of the first UE over resources not included in the transmission interval. In some aspects, the second UE may select resources included in the receive interval of the first UE for transmission to the first UE. In some aspects, the second UE may select resources not included in the transmit interval of the first UE for transmission to UEs other than the first UE (thereby reducing interference from the first UE).

[0103] In some aspects, the first UE may exclude the reception interval of the duplex mode of the first UE from the resource selection window of the first UE. In some aspects, the second UE may exclude the deaf interval and / or the transmission interval of the first UE from the resource selection window of the second UE for selection of resources for transmission to the first UE. In some aspects, when the reception interval indicated by the first UE is available in the candidate resource set, the second UE may prioritize the selection of resources in the reception interval (e.g., compared to performing a random selection). Therefore, the first UE and / or the second UE may perform duplex mode awareness sensing and / or re-evaluation.

[0104] In some aspects, a second UE in a set of a first UE and a second UE may perform inter-UE coordination. In inter-UE coordination, UE B may request UE A to provide a recommendation for resources for channel access. UE A may send an indication of one or more preferred resources and / or one or more non-preferred resources to UE B (e.g., via MAC-CE or SCI). For example, non-preferred resources may correspond to resources selected for transmission by UE A, which makes the non-preferred resources unsuitable for communication by UE B. As another example, preferred resources may correspond to resources available for reception by UE A. In some aspects, the first UE and / or the second UE may send an indication of one or more preferred resources based at least in part on a duplex mode. For example, if the second UE requests a recommendation for resources for channel access, any preferred resources indicated by the indication of one or more preferred resources and / or one or more non-preferred resources from the first UE to the second UE may be considered as dynamically configured reception intervals. In some aspects, the first UE may not recommend any resources within a deaf interval or a transmission interval (e.g., any resources within a deaf interval or a transmission interval may be excluded from the recommendation).

[0105] As indicated by reference numeral 535, in some aspects, a second UE in a set of a first UE and / or a second UE may perform radio link monitoring (RLM). For example, the first UE and / or the second UE may monitor a radio link failure (RLF) based at least in part on a discontinuous transmission (DTX) counter. The transmitting UE may count the number of consecutive DTX indications received from the receiving UE at a time when the transmitting UE is expecting a hybrid automatic repeat request (HARQ) response. In some aspects, the first UE and / or the second UE may monitor RLF based at least in part on a duplex mode. For example, if a transmission associated with DTX (e.g., PSSCH) is transmitted in a subchannel within a receiving interval of the transmitting destination UE, the first UE and / or the second UE may only increase the DTX counter. As another example, the first UE and / or the second UE may increase the DTX counter based at least in part on a transmission occurring during a receiving interval of the transmitting destination UE (e.g., in a subchannel during the receiving interval) according to a weight. For example, the weight may be greater than one (e.g., the first UE and / or the second UE may increase the DTX counter (i.e., numConsecutiveDTX) by two instead of one). In some aspects, the first UE and / or the second UE may identify the DTX based at least in part on the DTX indication, and increase the DTX counter based at least in part on identifying the DTX and the duplex mode, as described above. Thus, the first UE and / or the second UE may prioritize recovery from RLF during a receive interval. In some aspects, the first UE and / or the second UE may send a sidelink discontinuous reception configuration based at least in part on the duplex mode. For example, the first UE may arrange the sidelink DRX configuration of the first UE so that the active time of the first UE occurs in the receive interval of the first UE. As another example, the second UE may arrange the sidelink DRX configuration of the second UE so that the active time of the second UE occurs in the transmit interval of the first UE.

[0106] As indicated above, Figure 5-10 is provided as an example. Other examples may differ from those described above. Figure 5-10 Examples described.

[0107] Fig.11 1 is a diagram illustrating an example process 1100 performed, for example, by a first UE, according to the present disclosure. The example process 1100 is an example in which a UE (eg, UE 120) performs operations associated with configuring a duplex mode.

[0108] like Fig.11As shown in , in some aspects, process 1100 may include: sending information indicating a duplex mode of a first UE to a set of second UEs, wherein the duplex mode indicates one or more receive intervals of the first UE and one or more transmit intervals of the first UE (block 1110). For example, a first UE (e.g., using Fig.12 The communication manager 140 and / or the sending component 1204 depicted in the figure can send information indicating the duplex mode of the first UE to the set of second UEs, wherein the duplex mode indicates one or more receive intervals of the first UE and one or more transmit intervals of the first UE, as described above.

[0109] like Fig.11 As further shown in FIG. 1 , in some aspects, process 1100 may include: communicating according to a duplex mode (block 1120). For example, a first UE (e.g., using Fig.12 The communication manager 140 and / or the sending component 1204 depicted in FIG. 1 can communicate according to the duplex mode, as described above.

[0110] Process 1100 may include additional aspects, such as any single aspect or any combination of aspects described below and / or in conjunction with one or more other processes described elsewhere herein.

[0111] In a first aspect, a set of first UEs and second UEs are configured with a sidelink resource pool, wherein sending information indicating a duplex mode to the set of second UEs is based at least in part on the set of second UEs being configured with the sidelink resource pool.

[0112] In a second aspect, alone or in combination with the first aspect, sending the information indicating the duplex mode further comprises: broadcasting the information indicating the duplex mode.

[0113] In a third aspect, alone or in combination with one or more of the first and second aspects, sending the information indicating the duplex mode further comprises: multicasting the information indicating the duplex mode to a set of second UEs.

[0114] In a fourth aspect, alone or in combination with one or more of the first to third aspects, sending information indicating a duplex mode further comprises sending the information via a unicast connection with the set of second UEs.

[0115] In a fifth aspect, alone or in combination with one or more of the first to fourth aspects, sending the information via the unicast connection is based at least in part on information received from the set of second UEs via the unicast connection.

[0116] In a sixth aspect, alone or in combination with one or more of the first to fifth aspects, process 1100 includes: obtaining a channel occupancy time, and sending side link control information for modifying a duplex mode after obtaining the channel occupancy time.

[0117] In a seventh aspect, alone or in combination with one or more of the first to sixth aspects, the modified duplex mode includes a transmission interval within the channel occupancy time.

[0118] In an eighth aspect, alone or in combination with one or more of the first to seventh aspects, the first UE avoids sharing a channel occupation time with the second UE during a deaf interval or a transmission interval of the first UE.

[0119] In a ninth aspect, either alone or in combination with one or more of the first to eighth aspects, process 1100 includes sending a sidelink discontinuous reception configuration based at least in part on a duplex mode.

[0120] In a tenth aspect, alone or in combination with one or more of the first to ninth aspects, the information is sent via static signaling or semi-static signaling.

[0121] In an eleventh aspect, alone or in combination with one or more of the first to tenth aspects, the set of second UEs includes all UEs associated with the same sidelink resource pool as the first UE.

[0122] In a twelfth aspect, alone or in combination with one or more of the first to eleventh aspects, the set of second UEs includes all UEs associated with a unicast connection with the first UE.

[0123] In a thirteenth aspect, alone or in combination with one or more of the first to twelfth aspects, the set of second UEs includes UEs having quality of service requirements for traffic flows on a unicast connection with the first UE.

[0124] In a fourteenth aspect, alone or in combination with one or more of the first to thirteenth aspects, the duplex mode indicates one or more deaf intervals in which the first UE cannot receive communications.

[0125] In a fifteenth aspect, alone or in combination with one or more of the first to fourteenth aspects, a transmission interval in the one or more transmission intervals is within a deaf interval in the one or more deaf intervals.

[0126] In a sixteenth aspect, alone or in combination with one or more of the first to fifteenth aspects, the information indicating the duplex mode is based at least in part on a mapping between a UE identifier and a duplex mode.

[0127] In a seventeenth aspect, alone or in combination with one or more of the first to sixteenth aspects, the information indicating the duplex mode indicates a selected duplex mode from among a plurality of configured duplex modes.

[0128] In an eighteenth aspect, alone or in combination with one or more of the first to seventeenth aspects, sending information indicating a duplex mode is associated with a unicast connection establishment.

[0129] In a nineteenth aspect, alone or in combination with one or more of the first to eighteenth aspects, information indicating a duplex mode is sent via a medium access control control element using a multicast shared channel or a radio resource control message.

[0130] In a twentieth aspect, alone or in combination with one or more of the first to nineteenth aspects, the information indicating the duplex mode indicates a condition associated with the duplex mode.

[0131] In a twenty-first aspect, either alone or in combination with one or more of aspects one to twentieth, process 1100 includes sending inter-UE coordination information indicating preferred resources for transmission, wherein the preferred resources do not overlap with transmission intervals in one or more transmission intervals.

[0132] In a twenty-second aspect, either alone or in combination with one or more of the first to twenty-first aspects, the preferred resource is not allowed to overlap with any transmission interval of the one or more transmission intervals.

[0133] In a twenty-third aspect, alone or in combination with one or more of the first to twenty-second aspects, process 1100 includes: selecting resources for transmission according to a duplex mode.

[0134] In aspect twenty-four, alone or in combination with one or more of aspects one to twenty-three, resources are selected from a set of resources, wherein the set of resources does not include at least one of: one or more receive intervals or transmit intervals of a destination UE to be transmitted.

[0135] In a twenty-fifth aspect, alone or in combination with one or more of the first to twenty-fourth aspects, selecting resources prioritizes resources for one or more transmission intervals.

[0136] In a twenty-sixth aspect, either alone or in combination with one or more of the first to twenty-fifth aspects, process 1100 includes identifying a discontinuous transmission (DTX), wherein a DTX counter is incremented only if the transmission associated with the DTX is during a reception interval of a destination UE of the transmission.

[0137] In a twenty-seventh aspect, either alone or in combination with one or more of aspects one to twenty-six, process 1100 includes identifying DTX, wherein a DTX counter is incremented according to a weight based at least in part on a transmission associated with DTX occurring during a reception interval of a destination UE of the transmission.

[0138] although Fig.11 An exemplary block diagram of process 1100 is shown, but in some aspects, process 1100 may include Fig.11 Additional blocks, fewer blocks, different blocks, or differently arranged blocks than those depicted in the process 1100 may be performed in parallel. Additionally or alternatively, two or more of the blocks in process 1100 may be performed in parallel.

[0139] Fig.12 1 is a schematic diagram of an example apparatus 1200 for wireless communication according to the present disclosure. The apparatus 1200 may be a UE, or the UE may include the apparatus 1200. In some aspects, the apparatus 1200 includes a receiving component 1202 and a sending component 1204, which may communicate with each other (e.g., via one or more buses and / or one or more other components). As shown, the apparatus 1200 may communicate with another apparatus 1206 (such as a UE, a base station, or another wireless communication device) using the receiving component 1202 and the sending component 1204. As further shown, the apparatus 1200 may include a communication manager 140. The communication manager 140 may include one or more of the following: a selection component 1208 or an identification component 1210, as well as other examples.

[0140] In some aspects, the apparatus 1200 may be configured to perform the Figure 3-10 Additionally or alternatively, the apparatus 1200 may be configured to perform one or more of the processes described herein (such as Fig.11 In some aspects, the apparatus 1200 and / or Fig.12 One or more of the components shown may include a combination of Figure 2 One or more components of the UE described. Additionally or alternatively, Fig.12 One or more components shown in the figure may be implemented in combination with Figure 2 In one or more components described herein. Additionally or alternatively, one or more components in the set of components may be at least partially implemented as software stored in a memory. For example, a component (or portion of a component) may be implemented as instructions or codes stored in a non-transitory computer-readable medium and executable by a controller or processor to perform the function or operation of the component.

[0141] The receiving component 1202 may receive communications from the apparatus 1206, such as reference signals, control information, data communications, or a combination thereof. The receiving component 1202 may provide the received communications to one or more other components of the apparatus 1200. In some aspects, the receiving component 1202 may perform signal processing (such as filtering, amplification, demodulation, analog-to-digital conversion, demultiplexing, deinterleaving, demapping, equalization, interference cancellation, or decoding) on ​​the received communications and may provide the processed signals to one or more other components of the apparatus 1200. In some aspects, the receiving component 1202 may include combining Figure 2 One or more antennas, modems, demodulators, MIMO detectors, receive processors, controllers / processors, memories, or combinations thereof of a described UE.

[0142] The transmitting component 1204 may transmit communications, such as reference signals, control information, data communications, or combinations thereof, to the apparatus 1206. In some aspects, one or more other components of the apparatus 1200 may generate communications and may provide the generated communications to the transmitting component 1204 for transmission to the apparatus 1206. In some aspects, the transmitting component 1204 may perform signal processing (such as filtering, amplifying, modulating, digital-to-analog conversion, multiplexing, interleaving, mapping, or encoding, etc.) on the generated communications and may transmit the processed signals to the apparatus 1206. In some aspects, the transmitting component 1204 may include combining Figure 2 One or more antennas, modems, modulators, transmit MIMO processors, transmit processors, controllers / processors, memories, or combinations thereof of the described UE. In some aspects, the transmit component 1204 can be co-located with the receive component 1202 in a transceiver.

[0143] The transmitting component 1204 can transmit information indicating a duplex mode of the first UE to the set of second UEs, wherein the duplex mode indicates at least one of the following: one or more receive intervals of the first UE or one or more transmit intervals of the first UE. The transmitting component 1204 or the receiving component 1202 can communicate according to the duplex mode.

[0144] The transmitting component 1204 can transmit the sidelink control information that modifies the duplex mode after obtaining the channel occupancy time.

[0145] Transmitting component 1204 can transmit a sidelink discontinuous reception configuration based at least in part on a duplex mode.

[0146] Transmitting component 1204 can transmit inter-UE coordination information indicating preferred resources for transmission, wherein the preferred resources do not overlap with a transmission interval in the one or more transmission intervals.

[0147] A selecting component 1208 can select resources for transmission based on the duplex mode.

[0148] The identifying component 1210 can identify a DTX, wherein a DTX counter is incremented only if a transmission associated with the DTX is during a reception interval of a destination UE of the transmission.

[0149] The identifying component 1210 can identify the DTX, wherein the DTX counter is incremented according to a weight based at least in part on the transmission associated with the DTX occurring during a reception interval of a destination UE of the transmission.

[0150] Fig.12 The number and arrangement of components shown in the figure are provided as examples. In practice, there may be Fig.12 Additional components, fewer components, different components, or differently arranged components than those shown. Fig.12 Two or more components shown in may be implemented in a single component, or Fig.12 The single components shown in can be implemented as multiple, distributed components. Additionally or alternatively, Fig.12 The collection of (one or more) components shown in can perform the operations described by Fig.12 One or more functions performed by another collection of components shown in FIG.

[0151] The following provides an overview of some aspects of the disclosure:

[0152] Aspect 1: A method for wireless communication performed by a first user equipment (UE), comprising: sending information indicating a duplex mode of the first UE to a set of second UEs, wherein the duplex mode indicates at least one of: one or more receiving intervals of the first UE or one or more transmitting intervals of the first UE; and communicating according to the duplex mode.

[0153] Aspect 2: A method according to Aspect 1, wherein the set of the first UE and the second UE are configured with a sidelink resource pool, and wherein the information indicating the duplex mode is sent to the set of the second UE is at least partially based on the set of the second UE being configured with the sidelink resource pool.

[0154] Aspect 3: The method according to any one of aspects 1-2, wherein sending the information indicating the duplex mode further comprises: broadcasting the information indicating the duplex mode.

[0155] Aspect 4: The method according to any one of aspects 1-3, wherein sending the information indicating the duplex mode further comprises: multicasting the information indicating the duplex mode to the set of second UEs.

[0156] Aspect 5: The method according to any one of aspects 1-4, wherein sending the information indicating the duplex mode further comprises: sending the information via a unicast connection with the set of second UEs.

[0157] Aspect 6: The method according to aspect 5, wherein sending the information via the unicast connection is based at least in part on information received from the set of second UEs via the unicast connection.

[0158] Aspect 7: The method according to any one of Aspects 1-6 further includes: obtaining a channel occupancy time; and sending sidelink control information for modifying the duplex mode after obtaining the channel occupancy time.

[0159] Aspect 8: The method according to aspect 7, wherein the modified duplex mode includes a transmission interval within the channel occupancy time.

[0160] Aspect 9: The method according to aspect 7, wherein the first UE avoids sharing channel occupation time with the second UE during a deaf interval or a transmission interval of the first UE.

[0161] Aspect 10: The method according to any one of aspects 1-9 further comprises: sending a sidelink discontinuous reception configuration based at least in part on the duplex mode.

[0162] Aspect 11: The method according to any one of aspects 1-10, wherein the information is sent via static signaling or semi-static signaling.

[0163] Aspect 12: The method according to any one of aspects 1-11, wherein the set of second UEs includes all UEs associated with the same sidelink resource pool as the first UE.

[0164] Aspect 13: The method according to any one of aspects 1-12, wherein the set of second UEs includes all UEs associated with a unicast connection with the first UE.

[0165] Aspect 14: The method according to any one of aspects 1-13, wherein the set of second UEs includes UEs having quality of service requirements for traffic flows on a unicast connection with the first UE.

[0166] Aspect 15: The method according to any one of aspects 1-14, wherein the duplex mode indicates one or more deaf intervals in which the first UE cannot receive communications.

[0167] Aspect 16: The method according to aspect 15, wherein a transmission interval in the one or more transmission intervals is within a deaf interval in the one or more deaf intervals.

[0168] Aspect 17: The method according to any one of aspects 1-16, wherein the information indicative of the duplex mode is based at least in part on a mapping between a UE identifier and the duplex mode.

[0169] Aspect 18: The method according to any one of aspects 1-17, wherein the information indicating the duplex mode indicates a selected duplex mode among a plurality of configured duplex modes.

[0170] Aspect 19: The method according to any one of aspects 1-18, wherein sending the information indicating the duplex mode is associated with a unicast connection establishment.

[0171] Aspect 20: The method according to any one of aspects 1-19, wherein the information indicating the duplex mode is sent via a medium access control control element using a multicast shared channel or a radio resource control message.

[0172] Aspect 21: The method according to any one of aspects 1-20, wherein the information indicating the duplex mode indicates a condition associated with the duplex mode.

[0173] Aspect 22: The method according to any one of aspects 1-21 further includes: sending inter-UE coordination information indicating preferred resources for transmission, wherein the preferred resources do not overlap with a transmission interval in the one or more transmission intervals.

[0174] Aspect 23: The method according to aspect 22, wherein the preferred resource is not allowed to overlap with any transmission interval of the one or more transmission intervals.

[0175] Aspect 24: The method according to any one of aspects 1-23 further comprises: selecting resources for transmission according to the duplex mode.

[0176] Aspect 25: The method according to aspect 24, wherein the resource is selected from a set of resources, wherein the set of resources does not include at least one of the following: the one or more reception intervals or transmission intervals of the destination UE of the transmission.

[0177] Aspect 26: The method according to aspect 24, wherein selecting the resources prioritizes resources of the one or more transmission intervals.

[0178] Aspect 27: The method according to any one of aspects 1-26 also includes: identifying discontinuous transmission (DTX), wherein a DTX counter is increased only if the transmission associated with the DTX is during a reception interval of a destination UE of the transmission.

[0179] Aspect 28: The method according to any one of Aspects 1-27 further includes: identifying discontinuous transmission (DTX), wherein the DTX counter is increased according to a weight based at least in part on the transmission associated with the DTX occurring during a reception interval of a destination UE of the transmission.

[0180] Aspect 29: The method according to aspect 21, wherein the condition is associated with a buffer status report or a channel status of a channel.

[0181] Aspect 30: The method according to any one of aspects 1-29, further comprising: activating the duplex mode based at least in part on satisfying a threshold condition.

[0182] Aspect 31: The method according to aspect 30, wherein the duplex mode is activated when a buffer status report of the first UE is above a threshold.

[0183] Aspect 32: The method according to aspect 30, wherein the duplex mode is activated when a channel state of a channel associated with the first UE is lower than a threshold.

[0184] 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 one or more of the methods described in Aspects 1-32.

[0185] Aspect 34: An apparatus for wireless communication, comprising: a memory and one or more processors coupled to the memory, the one or more processors configured to perform the method according to one or more of aspects 1-32.

[0186] Aspect 35: An apparatus for wireless communication, comprising: at least one unit for performing the method according to one or more of aspects 1-32.

[0187] 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 according to one or more of aspects 1-32.

[0188] 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 which, when executed by one or more processors of a device, cause the device to perform one or more of the methods described in aspects 1-32.

[0189] The foregoing disclosure provides illustration and description, but is not intended to be exhaustive or to limit the aspects to the precise forms disclosed. Modifications and variations may be made in light of the above disclosure or may be acquired from practice of the various aspects.

[0190] As used herein, the term "component" is intended to be broadly interpreted as a combination of hardware and / or hardware and software. Whether referred to as software, firmware, middleware, microcode, hardware description language or other, software should be broadly interpreted as instructions, instruction sets, codes, code segments, program codes, programs, subroutines, software modules, applications, software applications, software packages, routines, subroutines, objects, executable files, execution threads, processes and / or functions, etc. As used herein, a "processor" is implemented in a combination of hardware and / or hardware and software. It will be apparent that the system and / or method described herein can be implemented in a combination of hardware and / or hardware and software in different forms. The actual specialized control hardware and software code used to implement these systems and / or methods is not a limitation of various aspects. Therefore, the operation and behavior of the system and / or method are not described herein with reference to specific software codes, because it will be understood by those skilled in the art that software and hardware can be designed to implement the system and / or method based at least in part on the description herein.

[0191] As used herein, "satisfying a threshold" may refer to a value greater than a threshold, greater than or equal to a threshold, less than a threshold, less than or equal to a threshold, equal to a threshold, not equal to a threshold, etc., depending on the context.

[0192] Although specific feature combinations are recorded in the claims and / or disclosed in the specification, these combinations are not intended to limit the disclosure of various aspects. Many features in these features can be combined in a non-claims and / or disclosed in the specification. The disclosure of various aspects includes each dependent claim combined with each other claim in the claim set. As used herein, the phrase of "at least one of" referring to the list of items refers to any combination of those items, including single 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, and any combination with the multiple of the same element (for example, 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 sorting of a, b and c).

[0193] Elements, actions or instructions used herein should not be interpreted as being critical or necessary unless there is a clear description. Moreover, as used herein, the articles "a" and "an" are intended to include one or more items and can be used interchangeably with "one or more". In addition, as used herein, the article "the" is intended to include one or more items quoted in conjunction with the article "the", and can be used interchangeably with "one or more". In addition, as used herein, the terms "set" and "group" are intended to include one or more items and can be used interchangeably with "one or more". In the case where only one item is expected, the phrase "only one" or similar language is used. Moreover, as used herein, the terms "have", "have", "have" etc. are intended to be open terms, which do not limit the elements they modify (for example, "having" an element of A can also have B). In addition, the phrase "based on" is intended to represent "based at least in part", unless otherwise clearly stated. Furthermore, as used herein, the term "or" when used in a serial form is intended to be inclusive and may be used interchangeably with "and / or" unless expressly stated otherwise (e.g., if used in combination with "either" or "only one of").

Claims

1. A first user equipment (UE) for wireless communication, comprising: Memory; as well as One or more processors coupled to the memory, configured to: Sending information indicating a duplex mode of the first UE to a set of second UEs, wherein the duplex mode indicates one or more receive intervals of the first UE and one or more transmit intervals of the first UE; as well as The communication is performed according to the duplex mode.

2. The first UE according to claim 1, wherein: The set of the first UE and the second UE are configured with a sidelink resource pool, wherein sending the information indicating the duplex mode to the set of the second UE is at least partially based on the set of the second UE being configured with the sidelink resource pool.

3. The first UE according to claim 1, wherein: To transmit the information indicating the duplex mode, the one or more processors are configured to broadcast the information indicating the duplex mode.

4. The first UE according to claim 1, wherein: To transmit the information indicating the duplex mode, the one or more processors are configured to multicast the information indicating the duplex mode to the set of second UEs.

5. The first UE according to claim 1, wherein: To send the information indicating the duplex mode, the one or more processors are configured to send the information via one or more unicast connections with the set of second UEs.

6. The first UE according to claim 5, wherein: Sending the information via the one or more unicast connections is based at least in part on information received from the second set of UEs via the unicast connections.

7. The first UE according to claim 1, wherein: The one or more processors are further configured to: Obtaining channel occupancy time; and After obtaining the channel occupation time, sidelink control information for modifying the duplex mode is sent.

8. The first UE according to claim 1, wherein: The one or more processors are further configured to transmit a sidelink discontinuous reception configuration based at least in part on the duplex mode.

9. The first UE according to claim 1, wherein: The information is sent via static signaling or semi-static signaling.

10. The first UE according to claim 1, wherein: The set of second UEs includes all UEs associated with the same sidelink resource pool as the first UE.

11. The first UE according to claim 1, wherein: The set of second UEs includes all UEs associated with a unicast connection with the first UE.

12. The first UE according to claim 1, wherein: The set of second UEs includes UEs having quality of service requirements for traffic flows on a unicast connection with the first UE.

13. The first UE according to claim 1, wherein: The duplex mode indicates one or more deafness intervals in which the first UE cannot receive communications.

14. The first UE according to claim 1, wherein: The information indicative of the duplex mode is based at least in part on a mapping between a UE identifier and the duplex mode.

15. The first UE according to claim 1, wherein: The information indicating the duplex mode indicates a selected duplex mode among a plurality of configured duplex modes.

16. The first UE according to claim 1, wherein: Sending the information indicating the duplex mode is associated with a unicast connection establishment.

17. The first UE according to claim 1, wherein: The information indicating the duplex mode indicates a condition associated with the duplex mode.

18. The first UE according to claim 1, wherein: The one or more processors are further configured to: Inter-UE coordination information is transmitted indicating preferred resources for transmission, wherein the preferred resources do not overlap with a transmission interval of the one or more transmission intervals.

19. The first UE according to claim 1, wherein: The one or more processors are further configured to: Resources for transmission are selected according to the duplex mode.

20. The first UE according to claim 1, wherein: The one or more processors are further configured to: A discontinuous transmission (DTX) is identified, wherein a DTX counter is incremented only if a transmission associated with the DTX is during a reception interval of a destination UE of the transmission.

21. The first UE according to claim 1, wherein: The one or more processors are further configured to: A discontinuous transmission (DTX) is identified, wherein a DTX counter is incremented according to a weight based at least in part on the transmission associated with the DTX occurring during a reception interval of a destination UE of the transmission.

22. The first UE according to claim 1, wherein: The one or more processors are further configured to activate the duplex mode based at least in part on satisfying a threshold condition.

23. The first UE according to claim 22, wherein: The duplex mode is activated when a buffer status report of the first UE is above a threshold.

24. The first UE according to claim 22, wherein: The duplex mode is activated when a channel state of a channel associated with the first UE is lower than a threshold.

25. A method of wireless communication performed by a first user equipment (UE), comprising: Sending information indicating a duplex mode of the first UE to a set of second UEs, wherein the duplex mode indicates one or more receive intervals of the first UE and one or more transmit intervals of the first UE; and The communication is performed according to the duplex mode.

26. The method according to claim 25, wherein: The set of the first UE and the second UE are configured with a sidelink resource pool, wherein sending the information indicating the duplex mode to the set of the second UE is at least partially based on the set of the second UE being configured with the sidelink resource pool.

27. A non-transitory computer readable medium storing a set of instructions for wireless communication, the set of instructions comprising: One or more instructions, which when executed by one or more processors of a first user equipment (UE), cause the first UE to perform the following operations: Sending information indicating a duplex mode of the first UE to a set of second UEs, wherein the duplex mode indicates one or more receive intervals of the first UE and one or more transmit intervals of the first UE; and The communication is performed according to the duplex mode.

28. The non-transitory computer readable medium of claim 270, wherein: The set of the first UE and the second UE are configured with a sidelink resource pool, wherein sending the information indicating the duplex mode to the set of the second UE is at least partially based on the set of the second UE being configured with the sidelink resource pool.

29. An apparatus for wireless communication, comprising: means for transmitting information indicating a duplex mode of the apparatus to a set of second user equipments (UEs), wherein the duplex mode indicates one or more receive intervals of the apparatus and one or more transmit intervals of the apparatus; and Means for communicating according to the duplex mode.

30. The apparatus of claim 290, wherein: The apparatus and the set of second UEs are configured with a sidelink resource pool, wherein sending the information indicating the duplex mode to the set of second UEs is based at least in part on the set of second UEs being configured with the sidelink resource pool.

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