Cyclic prefix extension for sidelink transmission in shared channel occupancy time

Abstract

Various aspects of the present disclosure generally relate to wireless communications. In some aspects, a user equipment (UE) may determine, based at least in part on a transmission or detection of a reservation of a current slot and one or more resource block (RB) sets, and selecting, based at least in part on a default cyclic prefix extension (CPE), a first CPE that reduces a gap between a previous time slot and a current time slot when transmission of a channel occupancy time (COT) by the initiator UE is terminated to a size that protects sidelink transmissions in the shared COT. The UE may attempt to transmit communications in one or more RB sets starting with the first CPE from the current time slot. Numerous other aspects are described.

Description

Technical Field

[0001] All aspects of this disclosure relate to wireless communication in general, and to techniques and apparatus for sidelink transmission using cyclic prefix spread during shared channel occupancy time. Background Technology

[0002] Wireless communication systems are widely deployed to provide a variety of telecommunications services, such as telephone, video, data, messaging, and broadcasting. Typical wireless communication systems employ multiple access technologies that enable 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 issued by the 3rd Generation Partnership Project (3GPP).

[0003] A wireless network may include one or more network nodes that support communication for wireless communication devices, such as user equipment (UE) or multiple UEs. A UE may communicate with network nodes via downlink and uplink communication. A "downlink" (or "DL") refers to the communication link from the network node to the UE, and an "uplink" (or "UL") refers to the communication link from the UE to the network node. Some wireless networks may support device-to-device communication, such as via local links (e.g., sidelinks (SL), wireless local area network (WLAN) links, and / or wireless personal area network (WPAN) links, etc.).

[0004] The aforementioned multiple access technologies have been adopted in various telecommunications standards to provide a common protocol that enables different UEs to communicate at the city, country, region, and / or global levels. New Radio (NR) (which may be referred to as 5G) is a set of enhancements to the LTE mobile standard issued by 3GPP. NR is designed to better support mobile broadband internet access by: improving spectrum efficiency; reducing costs; improving service; utilizing new spectrum; and better integrating with other open standards by using Orthogonal Frequency Division Multiplexing (OFDM) with Cyclic Prefix (CP) on the downlink (CP-OFDM), and CP-OFDM and / or Single Carrier Frequency Division Multiplexing (SC-FDM) (also known as Discrete Fourier Transform Extended OFDM (DFT-s-OFDM)) on the uplink; and supporting beamforming, Multiple-Input Multiple-Output (MIMO) antenna technologies and carrier aggregation. Further improvements to LTE, NR, and other radio access technologies remain useful as the demand for mobile broadband access continues to increase. Summary of the Invention

[0005] Some aspects described herein relate to a method for wireless communication performed by a User Equipment (UE). This method may include transmitting or detecting, at least in part, based on reservations for the current time slot and one or more Resource Block (RB) sets, and at least in part, based on the fact that the Default Cyclic Prefix Extension (CPE) cannot reduce the gap between the previous time slot and the current time slot to the size of sidelink transmissions in the protected shared COT when the initiating UE's transmission for the Channel Occupied Time (COT) is terminated, selecting a first CPE to reduce the gap to that size. The method may include attempting to transmit communication in one or more RB sets starting from the current time slot using the first CPE.

[0006] Some aspects described herein relate to a method for wireless communication performed by a UE. This method may include, at least in part, selecting a first CPE to reduce the gap between the previous time slot and the current time slot when the initiating UE's transmission to the COT is terminated, to the size of sidelink transmissions in the protected shared COT, based on the absence of transmission or detected reservations for the current time slot and one or more RB sets. The method may include attempting to transmit communication in one or more RB sets starting from the current time slot using the first CPE.

[0007] Some aspects described herein relate to an apparatus for wireless communication at a UE. The apparatus may include one or more memories and one or more processors coupled to the one or more memories. The one or more processors may be configured individually or collectively to: select a first CPE that reduces the gap to the size at least in part based on a reservation for transmission or detection of the current timeslot and one or more RB sets, and at least in part based on the fact that a default CPE cannot reduce the gap between the previous timeslot and the current timeslot when the initiating UE's transmission to the COT is terminated to the size of a sidelink transmission in the shared COT. The one or more processors may be configured individually or collectively to attempt to transmit communication in one or more RB sets starting from the current timeslot using the first CPE.

[0008] Some aspects described herein relate to an apparatus for wireless communication at a UE. The apparatus may include one or more memories and one or more processors coupled to the one or more memories. The one or more processors may be configured individually or collectively to: select a first CPE that reduces the gap between the previous time slot and the current time slot to the size of sidelink transmissions in the shared COT when the initiating UE's transmission to the COT is terminated, based at least in part on the absence of transmission or detected reservations for the current time slot and one or more RB sets. The one or more processors may be configured individually or collectively to attempt to transmit communication in one or more RB sets starting from the current time slot using the first CPE.

[0009] Some aspects described herein relate to a non-transitory computer-readable medium storing a set of instructions for wireless communication by a UE. When executed by one or more processors of the UE, this set of instructions allows the UE to select a first CPE that reduces the gap to a size at least partially based on a reservation for transmission or detection in the current time slot and one or more RB sets, and at least partially based on the fact that a default CPE cannot reduce the gap between the previous time slot and the current time slot to a size that protects sidelink transmissions in the shared COT when the initiating UE's transmission to the COT is terminated. When executed by one or more processors of the UE, this set of instructions allows the UE to attempt to transmit communication in one or more RB sets starting from the current time slot using the first CPE.

[0010] Some aspects described herein relate to a non-transitory computer-readable medium storing a set of instructions for wireless communication by a UE. When executed by one or more processors of the UE, this set of instructions enables the UE to select, at least in part, a first CPE to reduce the gap between the previous time slot and the current time slot to the size of sidelink transmissions in the shared COT when the initiating UE's transmission to the COT is terminated, based on the absence of transmission or detection of reservations for the current time slot and one or more RB sets. When executed by one or more processors of the UE, this set of instructions enables the UE to attempt to transmit communication in one or more RB sets starting from the current time slot using the first CPE.

[0011] Some aspects described herein relate to an apparatus for wireless communication. The apparatus may include components for selecting a first CPE to reduce the gap to a size at least partially based on a reservation for transmission or detection of the current time slot and one or more RB sets, and at least partially based on the fact that a default CPE cannot reduce the gap between the previous time slot and the current time slot to a size that protects sidelink transmissions in a shared COT when transmission from another device to the COT is terminated. The apparatus may also include components for attempting to transmit communication in one or more RB sets starting from the current time slot using the first CPE.

[0012] Some aspects described herein relate to an apparatus for wireless communication. The apparatus may include components for selecting a first CPE to reduce the gap between the previous time slot and the current time slot to a size that protects sidelink transmissions in a shared COT, based at least in part on the absence of transmission or detected reservations for the current time slot and one or more RB sets. The apparatus may also include components for attempting to transmit communication in one or more RB sets starting from the current time slot using the first CPE.

[0013] The entirety of the categories includes methods, apparatus, systems, computer program products, non-transitory computer-readable media, UEs, base stations, network entities, network nodes, wireless communication devices, and / or processing systems as fully described herein with reference to the accompanying drawings and description and illustrated as illustrated in the drawings and description.

[0014] The features and technical advantages of the examples according to this disclosure have been summarized rather extensively above in order to provide a better understanding of the detailed description that follows. Additional features and advantages will be described below. The disclosed concepts and specific examples can be readily used as the basis for modifying or designing other structures for achieving the same purpose of this disclosure. Such equivalent constructions do not depart from the scope of the appended claims. The characteristics of the concepts disclosed herein, in both their organization and manner of operation, and the associated advantages, will be better understood by considering the following description in conjunction with the accompanying drawings. Each of the drawings provided is for illustrative and descriptive purposes and not as a definition of limitation of the claims.

[0015] While aspects are described herein by way of example, those skilled in the art will understand that such aspects can be implemented in many different arrangements and scenarios. The techniques described herein can be implemented using different platform types, devices, systems, shapes, sizes, and / or package arrangements. In some aspects, aspects can be implemented via integrated chip implementations or other devices based on non-modular components (e.g., end-user equipment, vehicles, communication equipment, computing devices, industrial equipment, retail / shopping devices, 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. Devices incorporating the described aspects and features may include additional components and features for implementing and practicing the claimed and described aspects. In some aspects, the transmission and reception of wireless signals may include one or more components (e.g., hardware components including antennas, radio frequency (RF) chains, power amplifiers, modulators, buffers, processors, interleavers, adders, and / or summers) for analog and digital purposes. The aspects described herein are intended to be practiced in a wide variety of devices, components, systems, distributed arrangements, and / or end-user devices of various sizes, shapes, and configurations. Attached Figure Description

[0016] To gain a full understanding of the foregoing features of this disclosure, a more specific description of the brief overview can be obtained by referring to various aspects, some of which are illustrated in the accompanying drawings. However, it should be noted that the drawings illustrate only certain typical aspects of this disclosure and are therefore not to be considered as limiting its scope, as other equally valid aspects may be acknowledged in this description. The same reference numerals in different drawings may identify the same or similar elements.

[0017] Figure 1 This is a diagram illustrating an example of a wireless network according to the present disclosure.

[0018] Figure 2 This is a diagram illustrating an example of communication between a network node and a user equipment (UE) in a wireless network according to the present disclosure.

[0019] Figure 3 This is a diagram illustrating an example of sidelink communication according to this disclosure.

[0020] Figure 4 This is a diagram illustrating examples of sidelink communication and access link communication according to this disclosure.

[0021] Figure 5 This is a diagram illustrating an example of selecting sidelink resources according to this disclosure.

[0022] Figure 6 This is a diagram illustrating an example of a cyclic prefix extension (CPE) based on a reserved detection according to the present disclosure.

[0023] Figure 7 This is a diagram illustrating an example of a Channel Occupancy Time (COT) sharing problem according to this disclosure.

[0024] Figure 8 This is a diagram illustrating an example of a COT shared offset according to this disclosure.

[0025] Figure 9 This is a diagram illustrating an example of the gap between sidelink transmissions according to this disclosure.

[0026] Figure 10 This is a diagram illustrating an example of a shared COT according to this disclosure.

[0027] Figure 11 This is a diagram illustrating an example of selecting a CPE in a shared COT according to this disclosure.

[0028] Figure 12 This is a diagram illustrating an example of selecting a CPE in a shared COT according to this disclosure.

[0029] Figure 13 This is a diagram illustrating an example of selecting a CPE in a shared COT according to this disclosure.

[0030] Figure 14 This is a diagram illustrating an example of selecting a CPE in a shared COT according to this disclosure.

[0031] Figure 15 This is a diagram illustrating an example of selecting a CPE in a shared COT according to this disclosure.

[0032] Figure 16This is a diagram illustrating an example of selecting a CPE in a shared COT according to this disclosure.

[0033] Figure 17 This is a diagram illustrating an example of selecting a CPE based on one or more conditions according to this disclosure.

[0034] Figure 18 This is a diagram illustrating an example of selecting a CPE in a shared COT according to this disclosure.

[0035] Figure 19 This is a diagram illustrating example procedures performed at the UE or the device of the UE in some aspects according to this disclosure.

[0036] Figure 20 This is a diagram illustrating example procedures performed at the UE or the device of the UE in some aspects according to this disclosure.

[0037] Figure 21 This is a diagram of an example device for wireless communication according to the present disclosure. Detailed Implementation

[0038] User equipment (UE) can operate in unlicensed sidelink (SL-U). If the UE (e.g., the Channel Occupied Time (COT) initiator) determines that the channel is idle, the UE can treat the channel as idle for the maximum duration or until the COT. If the UE does not need to use the entire COT for transmission or reception, the UE can share the COT with another UE (e.g., the responding UE). The responding UE can send sidelink communication after the sidelink communication performed by the COT initiating UE after the following gaps: 1) If the gap is at least 25 microseconds (μs), the responding UE can send sidelink communication on the shared channel after performing a Type 2A sidelink channel access procedure. 2) If the gap is equal to 16 μs, the responding UE can send sidelink transmission on the shared channel after performing a Type 2B sidelink channel access procedure. 3) If the gap is as high as 16 μs and transmission is limited to 584 μs, the responding UE can send sidelink transmission on the channel after performing a Type 2C sidelink channel access procedure.

[0039] In some examples, the responding UE may send a Cyclic Prefix Extension (CPE) that includes the start of transmission in the gap between the first and second communications. The UE may send the CPE to begin transmission at a starting position before the first symbol of the second communication's schedule. The COT-initiating UE may transmit communication in the first time slot. A gap may exist between the first and second time slots. If the gap is larger than the size of protected transmission in a shared COT, the responding UE may need to perform Type 2A channel access. If the gap is the size of protected sidelink transmission in a shared COT (or not larger), the UE may use Type 2B or 2C channel access to transmit communication in the second time slot.

[0040] In some respects, the UE can operate under different conditions. For case 1, if the default CPE cannot ensure the gap size is less than or equal to 16 microseconds (μs), then Type 2B and Type 2C cannot be used for UE0, even if UE0 detects that the initiating UE's transmission was terminated in the previous time slot. For case 2, if the randomly selected CPE cannot ensure the gap size is less than or equal to 16 μs, then Type 2B and Type 2C cannot be used for UE0, even if UE0 detects that the UE-initiated transmission was terminated in the previous time slot. If the gap size cannot be guaranteed for the default CPE or the selected CPE, some UE transmissions can be blocked, including those for the UE initiator or for high-priority UEs.

[0041] The UE may intend to transmit communication in the current time slot. According to the various aspects described herein, the UE may select a first CPE based on one or more conditions related to whether transmission or reservation is detected, which first CPE ensures that the size of the gap between the previous time slot and the current time slot (e.g., ≤16 μs) protects continuous sidelink transmissions (transmissions in consecutive time slots) in the shared COT. The UE may select the first CPE at least in part based on the detection of transmission or reservation in the current time slot and the detection that the UE initiator of the COT terminated transmission in the previous time slot. The UE may further select the first CPE at least in part based on the fact that the default CPE used by the UE does not ensure that the gap is the size protecting sidelink transmissions in the shared COT.

[0042] By selecting a CPE that ensures the gap when the default CPE does not guarantee it, and when transmission or reservation is detected, the UE can protect sidelink transmissions in the shared COT. Protecting sidelink transmissions in the shared COT can improve resource utilization and save signaling resources.

[0043] The various aspects of this disclosure are described more fully below with reference to the accompanying drawings. However, this disclosure may be embodied in many different forms and should not be construed as limited to any particular structure or function presented throughout this disclosure. Rather, these aspects are provided so that this disclosure will be comprehensive and complete, and will fully convey the scope of this disclosure to those skilled in the art. Those skilled in the art will appreciate that the scope of this disclosure is intended to cover any aspect of this disclosure disclosed herein, whether implemented independently of or in combination with any other aspect of this disclosure. In some aspects, any number of aspects set forth herein may be used to implement an apparatus or method of practice. Furthermore, the scope of this disclosure is intended to cover such apparatus or methods practiced using structures, functionalities, or structures and functionalities other than or different from the various aspects of the disclosure set forth herein. It should be understood that any aspect of the disclosure herein may be embodied by one or more elements of the claims.

[0044] Various devices and techniques will now be used to illustrate several aspects of a telecommunications system. These devices and techniques will be described in detail below and illustrated in the accompanying drawings by various blocks, modules, components, circuits, steps, processes, or algorithms (collectively, “elements”). These elements can be implemented using 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 system as a whole.

[0045] Although terms generally associated with 5G or New Radio (NR) Radio Access Technology (RAT) may be used herein to describe aspects, aspects of this disclosure may be applied to other RATs, such as 3G RAT, 4G RAT and / or 5G and later (e.g., 6G) RATs.

[0046] Figure 1This is a diagram illustrating an example of a wireless network 100 according to the present disclosure. The wireless network 100 may be a 5G (e.g., NR) network and / or a 4G (e.g., LTE) network, or may include elements of a 5G (e.g., NR) network and / or elements of a 4G (e.g., 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), one or more UEs 120 (shown as UE 120a, UE 120b, UE 120c, UE 120d, and UE 120e), and / or other entities. Network node 110 is a network node that communicates with UE 120. As shown, network node 110 may include one or more network nodes. In some respects, network node 110 can 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, network node 110 can be a decomposed network node (sometimes referred to as a decomposed base station), meaning that network node 110 is configured to utilize a protocol stack that is physically or logically distributed among 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)).

[0047] In some examples, network node 110 is or includes network nodes (such as RUs) that communicate with UE 120 via a radio access link. In some examples, network node 110 is or includes network nodes (such as DUs) that communicate with other network nodes 110 via a fronthaul or midhaul link. In some examples, network node 110 is or includes network nodes (such as CUs) that communicate with other network nodes 110 via a midhaul link or with the core network via a backhaul link. In some examples, network node 110 (such as aggregated network node 110 or decomposed network node 110) may include multiple network nodes, such as one or more RUs, one or more CUs, and / or one or more DUs. In some aspects, network node 110 may include NR base stations, LTE base stations, Node Bs, eNBs (e.g., in 4G), gNBs (e.g., in 5G), access points, Transmit / Receive Points (TRPs), DUs, RUs, CUs, network mobility elements, core network nodes, network elements, network equipment, RAN nodes, or combinations thereof. In some examples, network nodes 110 can interconnect with each other or to one or more other network nodes 110 in the 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).

[0048] In some examples, network node 110 may provide communication coverage for a specific geographic area. In the 3rd Generation Partnership Project (3GPP), depending on the context of terminology use, the term "cell" may refer to the coverage area of ​​network node 110 and / or the network node subsystem serving that coverage area. Network node 110 may provide communication coverage for macrocells, picocells, femtocells, and / or another type of cell. A macrocell may cover a relatively large geographic area (e.g., with a radius of several kilometers) and may allow unrestricted access by UE 120 with a service subscription. A picocell may cover a relatively small geographic area and may allow unrestricted access by UE 120 with a service subscription. A femtocell may cover a relatively small geographic area (e.g., a home) and may allow restricted access by UE 120 associated with the femtocell (e.g., UE 120 in a Closed Subscriber Group (CSG)). Network node 110 used for macrocells may be referred to as a macro network node. Network node 110 used for picocells may be referred to as a pico network node. The network node 110 used for femtocells can be referred to as a femtocell network node or a home network node. Figure 1 In the example shown, network node 110a can be a macro network node for macro cell 102a, network node 110b can be a pico network node for pico cell 102b, and network node 110c can be a femto network node for femto cell 102c. Network nodes can support one or more (e.g., three) cells. In some examples, the cells may not necessarily be stationary, and the geographical area of ​​the cells may move depending on the location of the mobile network node 110 (e.g., a mobile network node).

[0049] In some aspects, the term "base station" or "network node" may refer to an aggregated base station, a decomposed base station, an integrated access and backhaul (IAB) node, a relay node, or one or more components thereof. In some aspects, "base station" or "network node" may refer to a CU, DU, 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. In some aspects, in some distributed systems, each of multiple different devices (which may be located in the same geographical location or different geographical locations) may be configured to perform at least a portion of a function, or repeatedly perform at least a portion of that function, and the term "base station" or "network node" may refer to any one or more of these 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 can be instantiated on a single device. In some aspects, the term "base station" or "network node" may refer to one base station function rather than another. In this way, a single device may include more than one base station.

[0050] Wireless network 100 may include one or more relay stations. A relay station is a network node that can receive data transmissions from upstream nodes (e.g., network node 110 or UE 120) and transmit data to downstream nodes (e.g., UE 120 or network node 110). A relay station may be a UE 120 that can relay transmissions for other UE 120s. Figure 1 In the example shown, network node 110d (e.g., a relay network node) can communicate with network node 110a (e.g., a macro network node) and UE 120d to facilitate communication between network node 110a and UE 120d. The network node 110 for relay communication may be referred to as a relay station, relay base station, relay network node, relay node, repeater, etc.

[0051] Wireless network 100 can be a heterogeneous network, comprising 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 effects on interference within wireless network 100. In some respects, macro network nodes may have high transmit power levels (e.g., 5 watts to 40 watts), while pico network nodes, femto network nodes, and relay network nodes may have lower transmit power levels (e.g., 0.1 watts to 2 watts).

[0052] Network controller 130 may be coupled to or communicate with a group of network nodes 110, and may provide coordination and control for these network nodes 110. Network controller 130 may communicate with network nodes 110 via a backhaul or midhaul communication link. Network nodes 110 may also communicate directly with each other, or indirectly via a wireless or wired backhaul communication link. In some aspects, network controller 130 may be a CU or a core network device, or may include a CU or a core network device.

[0053] UE 120 may be distributed throughout the wireless network 100, and each UE 120 may be stationary or mobile. In some aspects, UE 120 may include access terminals, terminals, mobile stations, and / or subscriber units. UE 120 may be a cellular phone (e.g., a smartphone), a personal digital assistant (PDA), a wireless modem, a wireless communication device, a handheld device, a laptop computer, a cordless phone, a wireless local loop (WLL) station, a tablet computer, a camera, a gaming device, a netbook, a smartbook, an ultrabook, a medical device, a biometric device, a wearable device (e.g., a smartwatch, smart clothing, smart glasses, a smart wristband, smart jewelry (e.g., a smart ring or smart bracelet)), an entertainment device (e.g., a music device, a video device, and / or a satellite radio), a vehicle component or sensor, a smart meter / sensor, industrial manufacturing equipment, a GPS device, a UE function of a network node, and / or any other suitable device configured to communicate via wireless or wired media.

[0054] Some UEs 120 may be considered machine-type communication (MTC) or evolved or enhanced machine-type communication (eMTC) UEs. In some aspects, MTC UEs and / or eMTC UEs may include robots, unmanned aerial vehicles, remote devices, sensors, instruments, monitors, and / or location tags that can communicate with network nodes, another device (e.g., a remote device), or some other entity. Some UEs 120 may be considered Internet of Things (IoT) devices and / or may be implemented as NB-IoT (Narrowband IoT) devices. Some UEs 120 may be considered customer premises equipment. UEs 120 may be included within a housing that houses components of the UE 120, such as processor components and / or memory components. In some examples, processor components and memory components may be coupled together. In some aspects, processor components (e.g., one or more processors) and memory components (e.g., memory) may be operatively coupled, communicatively coupled, electronically coupled, and / or electrically coupled.

[0055] Generally, any number of wireless networks 100 can be deployed in a given geographical area. Each wireless network 100 can support a specific RAT and can operate on one or more frequencies. A RAT may be referred to as a radio technology, air interface, etc. A frequency may be referred to as a carrier, frequency channel, etc. Each frequency in a given geographical area can support a single RAT to avoid interference between wireless networks using different RATs. In some cases, NR or 5G RAT networks can be deployed.

[0056] 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 device to communicate with each other). In some aspects, UEs 120 may communicate using peer-to-peer (P2P) communication, device-to-device (D2D) communication, vehicle-to-everything (V2X) protocols (e.g., which may include vehicle-to-vehicle (V2V) protocols, vehicle-to-infrastructure (V2I) protocols, or vehicle-to-pedestrian (V2P) protocols) and / or mesh networks. In such examples, UEs 120 may perform scheduling operations, resource selection operations, and / or other operations described elsewhere herein as being performed by network node 110.

[0057] Devices of the wireless network 100 can communicate using the electromagnetic spectrum, which can be subdivided into various categories, bands, channels, etc., according to frequency or wavelength. In some respects, devices of the wireless network 100 can communicate using one or more operating frequency bands. In 5G NR, two initial operating frequency bands have been designated as frequency ranges FR1 (410MHz to 7.125GHz) and FR2 (24.25GHz to 52.6GHz). It should be understood that although a portion of FR1 is greater than 6GHz, FR1 is generally (interchangeably) referred to as the “sub-6GHz” band in various documents and articles. Similar naming issues sometimes occur with FR2, which is generally (interchangeably) referred to as the “millimeter wave” band in documents and articles, although this is different from the extremely high frequency (EHF) band (30GHz to 300GHz) designated as a “millimeter wave” band by the International Telecommunication Union (ITU).

[0058] The frequencies between FR1 and FR2 are generally referred to as mid-band frequencies. Recent 5G NR studies have identified the operating bands used for these mid-band frequencies as the frequency range designation FR3 (7.125 GHz to 24.25 GHz). Bands falling within FR3 can inherit FR1 and / or FR2 characteristics, and thus can effectively extend the features of FR1 and / or FR2 to mid-band frequencies. Furthermore, higher frequency bands are currently being explored to extend 5G NR operation beyond 52.6 GHz. In some respects, three higher operating frequency bands have been identified as the frequency range designations FR4a or FR4-1 (52.6 GHz to 71 GHz), FR4 (52.6 GHz to 114.25 GHz), and FR5 (114.25 GHz to 300 GHz). Each of these higher frequency bands falls within the EHF band.

[0059] Considering the examples above, unless otherwise specifically stated, it should be understood that if the term "below 6 GHz" is used herein, it can broadly refer to frequencies below 6 GHz, within FR1, or including intermediate frequency bands. Furthermore, unless otherwise specifically stated, it should be understood that if the term "millimeter wave" is used herein, it can broadly refer to frequencies that can include intermediate frequency bands, within FR2, FR4, FR4-a, or FR4-1 and / or FR5, or within the EHF band. Modifications to frequencies included in these operating frequency bands (e.g., FR1, FR2, FR3, FR4, FR4-a, FR4-1, and / or FR5) are contemplated, and the techniques described herein are applicable to those modified frequency ranges.

[0060] In some respects, the UE (e.g., UE 120) may include a communication manager 140. As described in more detail elsewhere herein, the communication manager 140 may select a first CPE to reduce the gap to that size based at least in part on the reservation of transmission or detection for the current time slot and one or more resource block (RB) sets, and at least in part on the fact that the default CPE cannot reduce the gap between the previous time slot and the current time slot when the initiating UE's transmission to the COT is terminated to the size of sidelink transmission in the protected shared COT. The communication manager 140 may attempt to transmit communication in one or more RB sets starting from the current time slot using the first CPE.

[0061] In some respects, the communication manager 140 may, at least in part, select a first CPE to reduce the gap between the previous time slot and the current time slot when the initiating UE's transmission to the COT is terminated, to the size of a sidelink transmission in the protected shared COT, based on the absence of transmission or detected reservation for the current time slot and one or more RB sets. The communication manager 140 may attempt to transmit communication in one or more RB sets starting from the current time slot using the first CPE. Additionally or alternatively, the communication manager 140 may perform one or more other operations described herein.

[0062] As indicated above, Figure 1 This is provided as an example. Other examples are available with reference to [the relevant information]. Figure 1 The examples described are different.

[0063] Figure 2 This is a diagram illustrating example 200 of communication between network node 110 and UE 120 in a wireless network 100 according to this disclosure. Network node 110 may be equipped with a set of antennas 234a to 234t, such as... T One antenna ( T ≥1). The UE 120 may be equipped with a set of antennas 252a to 252r, such as R One antenna ( R ≥1). Network node 110 of Example 200 includes one or more radio frequency components, such as antenna 234 and modem 232. In some examples, network node 110 may include an interface, communication components, or another component that facilitates communication with UE 120 or another network node. Some network node 110 may not include radio frequency components that facilitate direct communication with UE 120, such as one or more CUs or one or more DUs.

[0064] At network node 110, transmitting processor 220 can receive data from data source 212 intended for use by UE 120 (or a group of UEs 120). Transmitting processor 220 can select one or more modulation and decoding schemes (MCS) for UE 120 based at least in part on one or more channel quality indicators (CQIs) received from UE 120. Network node 110 can process (e.g., encode and modulate) the data for UE 120 based at least in part on the MCS selected for UE 120 and can provide data symbols for UE 120. Transmitting processor 220 can process system information (e.g., 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. Transmitting processor 220 can 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 signal (PSS) or secondary synchronization signal (SSS)). The transmit (TX) multiple-input multiple-output (MIMO) processor 230 can perform spatial processing (e.g., pre-decoding) on ​​data symbols, control symbols, overhead symbols, and / or reference symbols where applicable, and can transmit a set of output symbol streams (e.g., T Each output symbol stream is provided to a corresponding set of modems 232 (e.g., ...). T Each modem 232a to 232t (shown as modems 232a to 232t) can, in some respects, be provided to the modulator component of modem 232 (shown as MOD). Each modem 232 can use a corresponding modulator component to process the corresponding output symbol stream (e.g., for OFDM) to obtain an output sample stream. Each modem 232 can also use a corresponding modulator component to process the output sample stream (e.g., convert to analog, amplify, filter, and / or up-convert) to obtain a downlink signal. Modems 232a to 232t can be transmitted via a corresponding set of antennas 234 (e.g., T Each antenna (shown as antennas 234a to 234t) is used to transmit a set of downlink signals (e.g., ...). T (One downlink signal).

[0065] At UE 120, a set of antennas 252 (shown as antennas 252a to 252r) can receive downlink signals from network node 110 and / or other network nodes 110 and can transmit a set of received signals (e.g., R The received signals are provided to a group of modems 254 (e.g., RA modem (shown as modems 254a to 254r). In some aspects, each received signal can be provided to the demodulator component of modem 254 (shown as DEMOD). Each modem 254 can use a corresponding demodulator component to condition (e.g., filter, amplify, down-convert, and / or digitize) the received signal to obtain an input sample. Each modem 254 can use the demodulator component to further process the input sample (e.g., for OFDM) to obtain a received symbol. MIMO detector 256 can obtain the received symbols from modem 254, perform MIMO detection on the received symbols where applicable, and provide the detected symbols. Receive processor 258 can process (e.g., demodulate and decode) the detected symbols, provide the decoded data for UE 120 to data sink 260, and provide the decoded control information and system information to controller / processor 280. The term "controller / processor" can refer to one or more controllers, one or more processors, or a combination thereof. The channel processor can determine parameters such as the Reference Signal Received Power (RSRP), Received Signal Strength Indicator (RSSI), Reference Signal Received Quality (RSRQ), and / or CQI. In some examples, one or more components of the UE 120 may be included in the housing 284.

[0066] Network controller 130 may include communication unit 294, controller / processor 290, and memory 292. In some aspects, network controller 130 may include one or more devices in the core network. Network controller 130 may communicate with network node 110 via communication unit 294.

[0067] One or more antennas (e.g., antennas 234a to 234t and / or antennas 252a to 252r) may include one or more antenna panels, one or more antenna groups, one or more sets of antenna elements and / or one or more antenna arrays, etc., or may 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, etc. Antenna panels, antenna groups, sets of antenna elements and / or antenna arrays may include one or more antenna elements (within a single housing or multiple housings), a set of coplanar antenna elements, a set of non-coplanar antenna elements and / or coupled to one or more transmitting and / or receiving components (such as...). Figure 2 One or more antenna elements (one or more components in a )

[0068] On the uplink, at UE 120, the transmit processor 264 can receive and process data from data source 262 and control information from controller / processor 280 (e.g., for reporting including RSRP, RSSI, RSRQ, and / or CQI). The transmit processor 264 can generate reference symbols for one or more reference signals. The symbols from the transmit processor 264 can be pre-decoded by the TX MIMO processor 266 where applicable, further processed by the modem 254 (e.g., for DFT-s-OFDM or CP-OFDM), and transmitted to network node 110. In some examples, the modem 254 of UE 120 may include a modulator and demodulator. In some examples, UE 120 includes a transceiver. The transceiver may include any combination of antenna 252, modem 254, MIMO detector 256, receive processor 258, transmit processor 264, and / or TX MIMO processor 266. The transceiver may be used by a processor (e.g., controller / processor 280) and memory 282 to execute this document (e.g., reference). Figures 3 to 21 ( ) any aspect of the methods described in the method.

[0069] At network node 110, uplink signals from UE 120 and / or other UEs may be received by antenna 234, processed by modem 232 (e.g., demodulator component of modem 232 (shown as DEMOD)), detected by MIMO detector 236, and further processed by receiver processor 238 to obtain decoded data and control information transmitted by UE 120. Receiver processor 238 may provide the decoded data to data sink 239 and the decoded control information to controller / processor 240. Network node 110 may include communication unit 244 and may communicate with network controller 130 via communication unit 244. Network node 110 may include scheduler 246 to schedule one or more UEs 120 for downlink and / or uplink communication. In some examples, modem 232 of network node 110 may include modulator and demodulator. In some examples, network node 110 includes transceiver. The transceiver may include any combination of antenna 234, modem 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 execute this document (e.g., reference). Figures 3 to 21 ( ) any aspect of the methods described in the method.

[0070] The controller / processor 240 of network node 110, the controller / processor 280 of UE 120 and / or Figure 2Any other component may perform one or more technologies associated with the CPE selected in the COT, as described in more detail elsewhere in this document. In some respects, the controller / processor 240 of network node 110, the controller / processor 280 of UE 120, and / or Figure 2 Any other component may perform or direct in some way. Figure 19 The process 1900, Figure 12 The operation of process 2000 and / or other processes as described herein. Memory 242 and memory 282 may store data and program code 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. In some aspects, one or more instructions may cause the one or more processors, UE 120 and / or network node 110 to perform or direct in some respects when executed by one or more processors of network node 110 and / or UE 120 (e.g., directly, or after compilation, transformation and / or interpretation). Figure 19 The process 1900, Figure 12 The process involves 2000 operations. In some examples, the executed instructions may include run instructions, transform instructions, compile instructions, and / or interpret instructions, etc.

[0071] In some aspects, the UE (e.g., UE 120) includes: components for selecting a first CPE to reduce the gap to a size based at least in part on the reservation of transmission or detection for the current time slot and one or more RB sets, and at least in part on the fact that the default CPE cannot reduce the gap between the previous time slot and the current time slot when the initiating UE's transmission to the COT is terminated to a size that protects the sidelink transmission in the shared COT; and / or components for attempting to transmit communication in one or more RB sets starting from the current time slot using the first CPE. In some aspects, components for the UE to perform the operations described herein may include one or more of the following: a communication manager 140, an antenna 252, a modem 254, a MIMO detector 256, a receive processor 258, a transmit processor 264, a TX MIMO processor 266, a controller / processor 280, or a memory 282.

[0072] In some aspects, the UE includes: a first CPE for selecting, at least in part, a first CPE to reduce the gap between the previous time slot and the current time slot when the initiating UE’s transmission to the COT is terminated to the size of sidelink transmission in the protected shared COT, based on the absence of transmission or reservation detected for the current time slot and one or more RB sets; and / or a component for attempting to transmit communication in one or more RB sets starting from the current time slot using the first CPE.

[0073] In some aspects, individual processors can be described as performing all functions executed by the one or more processors. In some aspects, the one or more processors can jointly perform a set of functions. In some aspects, a first set of processors(one or more) of the one or more processors can be described as performing a first function executed by the one or more processors, and a second set of processors(one or more) of the one or more processors can be described as performing a second function executed by the one or more processors. The first set of processors and the second set of processors can be the same set of processors or can be different sets of processors. The reference to "one or more processors" should be understood as referring to a combination of... Figure 2 Any one or more processors described. The reference to "one or more memories" should be understood to refer to any one or more memories of the corresponding device, such as those in conjunction with... Figure 2 The memory described. In some respects, it is described that functions performed by one or more memories can be performed by the same subset of one or more memories or by different subsets of one or more memories.

[0074] Although Figure 2 The boxes in the diagram are illustrated as different components, but the functions described above with respect to these boxes may be implemented in a single hardware, software, or combined component, or in various combinations of components. In some respects, 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.

[0075] As indicated above, Figure 2 This is provided as an example. Other examples are available with reference to [the relevant information]. Figure 2 The examples described are different.

[0076] Communication systems (such as 5G NR systems) can be deployed in various ways with a variety of components or parts. In a 5G NR system or network, network nodes, network entities, network mobility elements, RAN nodes, core network nodes, network elements, base stations, or network equipment can be implemented in a converged or decomposed architecture. In some aspects, base stations (such as Node B (NB), evolved NB (eNB), NR base stations, 5G NB, access points (APs), TRPs, or cells, etc.) or one or more units (or components) performing base station functions can be implemented as converged base stations (also known as standalone base stations or monolithic base stations) or decomposed base stations. A "network entity" or "network node" can refer to a decomposed base station or one or more units of a decomposed base station (such as one or more CUs, one or more DUs, one or more RUs, or combinations thereof).

[0077] Aggregated base stations (e.g., aggregated network nodes) 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 cell). Decomposed base stations (e.g., decomposed network nodes) can be configured to utilize a protocol stack that is physically or logically distributed across two or more cells (such as one or more CUs, one or more DUs, or one or more RUs). In some examples, the CU may be implemented within a network node, and one or more DUs may be co-located with the CU, or alternatively, may be geographically or virtually distributed across one or more other network nodes. DUs may be implemented to communicate with one or more RUs. Each of the CU, DU, and RU can also be implemented as a virtual cell, such as a Virtual Central Unit (VCU), a Virtual Distributed Unit (VDU), or a Virtual Radio Unit (VRU), etc.

[0078] Base station type operation or network design may consider the aggregation characteristics of base station functionality. In some aspects, decomposed base stations can be used in IAB networks, Open Radio Access Networks (O-RAN (such as network configurations initiated by the O-RAN Alliance)), or Virtualized Radio Access Networks (vRAN, also known as Cloud Radio Access Networks (C-RAN)) to facilitate the scaling of communication systems by separating base station functionality into one or more units that can be deployed independently. Decomposed base stations may include functionality implemented across two or more units at various physical locations, as well as functionality virtually implemented for at least one unit, which enables flexibility in network design. The individual units of a decomposed base station can be configured for wired or wireless communication with at least one other unit of the decomposed base station.

[0079] Figure 3 This is a diagram illustrating example 300 of sidelink communication according to this disclosure.

[0080] like Figure 3As shown, 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. UEs 305-1 and 305-2 can communicate using one or more sidelink channels 310 for P2P communication, D2D communication, V2X communication (which may include V2V communication, V2I communication, and / or V2P communication), and / or mesh networking. In some aspects, UEs 305 (e.g., UEs 305-1 and / or UEs 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., the 5.9 GHz band). Additionally or alternatively, UEs 305 can use Global Navigation Satellite System (GNSS) timing to synchronize the timing of transmission time intervals (TTIs) (e.g., frames, subframes, time slots, or symbols).

[0081] like Figure 3 As further shown, 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. PSCCH 315 can be used to convey control information, similar to a Physical Downlink Control Channel (PDCCH) and / or a Physical Uplink Control Channel (PUCCH) for cellular communication with network node 110 via an access link or access channel. PSSCH 320 can be used to convey data, similar to a Physical Downlink Shared Channel (PDSCH) and / or a Physical Uplink Shared Channel (PUSCH) for cellular communication with network node 110 via an access link or access channel. In some aspects, PSCCH 315 may carry Sidelink Control Information (SCI) 330, which may indicate various control information for sidelink communication, such as one or more resources (e.g., time resources, frequency resources, and / or spatial resources), wherein a Transport Block (TB) 335 may be carried on PSSCH 320. TB 335 may include data. PSFCH 325 may be used to communicate sidelink feedback 340, such as hybrid automatic repeat request (HARQ) feedback (e.g., acknowledgment or negative acknowledgment (ACK / NACK) information), transmit power control (TPC), and / or scheduling request (SR).

[0082] Although shown on PSCCH 315, SCI 330 may, in some respects, include multiple communications at different levels, such as Level 1 SCI (SCI-1) and Level 2 SCI (SCI-2) . SCI-1 may be transmitted on PSCCH 315. SCI-2 may be transmitted on PSSCH 320. In some respects, SCI-1 may include indications of one or more resources on PSSCH 320 (e.g., time resources, frequency resources, and / or spatial resources), information for decoding sidelink communications on PSSCH, Quality of Service (QoS) priority values, resource reservation periods, PSSCH DMRS modes, SCI format of SCI-2, β offset of SCI-2, number of PSSCH DMRS ports, and / or MCS. SCI-2 may include information associated with data transmission on PSSCH 320, such as HARQ procedure ID, New Data Indicator (NDI), source identifier, destination identifier, and / or Channel State Information (CSI) report triggering.

[0083] In some aspects, one or more sidelink channels 310 may use a resource pool. In some aspects, specific RBs may be used across time to transmit (e.g., scheduling assignments included in SCI 330) in a subchannel. In some aspects, data transmissions associated with scheduling assignments (e.g., on PSSCH 320) may (e.g., using frequency division multiplexing) occupy adjacent RBs in the same subframe as the scheduling assignment. In some aspects, scheduling assignments and associated data transmissions are not transmitted on adjacent RBs.

[0084] In some aspects, UE 305 may operate using a sidelink transmission mode (e.g., mode 1), where resource selection and / or scheduling is performed by network node 110 (e.g., base station, CU, or DU). In some aspects, UE 305 may receive permission for sidelink channel access and / or scheduling from network node 110 (e.g., in downlink control information (DCI) or in radio resource control (RRC) messages, such as permission for configuration) (e.g., directly or via one or more network nodes). In some aspects, UE 305 may operate using a transmission mode (e.g., mode 2), where 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. In some respects, UE 305 can measure RSSI parameters (e.g., sidelink-RSSI (S-RSSI) parameters) associated with various sidelink channels, can measure RSRP parameters (e.g., PSSCH-RSRP parameters) associated with various sidelink channels, and / or can measure RSRQ parameters (e.g., PSSCH-RSRQ parameters) associated with various sidelink channels, and can select the channel for transmitting sidelink communication based at least in part on the measurements.

[0085] Alternatively or alternatively, UE 305 may use SCI 330 received in PSCCH 315 to perform resource selection and / or scheduling, which may indicate the occupied resources and / or channel parameters. Alternatively or alternatively, UE 305 may perform resource selection and / or scheduling by determining the Channel Busy Ratio (CBR) associated with various sidelink channels, which may be used for rate control (e.g., by indicating the maximum number of resource blocks that UE 305 can use for a specific set of subframes).

[0086] In a transmission mode where resource selection and / or scheduling is performed by UE 305, UE 305 may generate a sidelink grant, which may be transmitted in SCI 330. In some aspects, the sidelink grant may indicate one or more parameters (e.g., transmission parameters) to be used for an upcoming sidelink transmission, such as one or more resource blocks (e.g., for TB 335) to be used for an upcoming sidelink transmission on PSSCH 320, one or more subframes to be used for an upcoming sidelink transmission, and / or the MCS to be used for an upcoming sidelink transmission. In some aspects, 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, UE 305 may generate a sidelink grant for event-driven scheduling (such as for on-demand sidelink messages).

[0087] As indicated above, Figure 3 This is provided as an example. Other examples are available with reference to [the relevant information]. Figure 3 The examples described are different.

[0088] Figure 4 This is a diagram illustrating example 400 of sidelink communication and access link communication according to this disclosure.

[0089] like Figure 4 As shown, the transmitter (Tx) / receiver (Rx) UE 405 and the Rx / Tx UE 410 can communicate with each other via a side link, as described above. Figure 3 As described herein. As further shown, in some sidelink modes, network node 110 may communicate with Tx / Rx UE 405, such as via a first access link (e.g., directly or via one or more network nodes). Additionally or alternatively, in some sidelink modes, network node 110 may communicate with Rx / Tx UE 410, such as via a first access link (e.g., directly or via one or more network nodes). Tx / Rx UE 405 and / or Rx / Tx UE 410 may communicate with one or more UEs (such as those described elsewhere herein) Figure 1 This corresponds to UE 120. Therefore, a direct link between UEs 120 (e.g., via the PC5 interface) can be referred to as a side link, and a direct link between network 110 and UE 120 (e.g., via the Uu interface) can be referred to as an access link. Side link communication can be sent via the side link, and access link communication can be sent via the access link. Access link communication can be downlink communication (from network node 110 to UE 120) or uplink communication (from UE 120 to network node 110).

[0090] As indicated above, Figure 4 This is provided as an example. Other examples are available with reference to [the relevant information]. Figure 4 The examples described are different.

[0091] Figure 5 This is an illustration of example 500 of selecting sidelink resources according to this disclosure. Example 500 shows UE 502 (e.g., UE 120) which can receive communication from other UEs (such as UE 504, UE 506 and / or UE 508) on a sidelink channel.

[0092] Such as combination Figure 5In this description, UE 504 is a transmitting UE that sends communications to UE 502, which acts as a receiving UE. UE 504 can use reports from UE 502, which can act as a reporting UE that reports available sidelink resources, preferred sidelink resources, non-preferred sidelink resources, or sidelink resource conflicts. Example 500 illustrates availability reporting from UE 502 to UE 504 and communication from UE 504 to UE 502.

[0093] If UE 504 is to send communication to UE 502, UE 504 can sense the sidelink channel within the sensing window to determine which sidelink resources (e.g., subcarriers, subchannels) are available. UE 504 can use a Listen-Before-Speak (LBT) procedure to sense the channel. The LBT procedure can be a Type 1 LBT procedure, in which UE 504 listens for multiple time slots (e.g., 9 milliseconds (ms)) and uses a counter. If the sidelink resource is idle or has signal energy that meets an availability threshold (e.g., RSRP) (e.g., interference or energy measured on the channel is below the maximum dBm or dB RSRP threshold), the sidelink resource can be considered available. The availability threshold can be configured or pre-configured according to transmit and receive priority pairs. Depending on the configuration, UE 504 can measure DMRS on the PSCCH or PSSCH.

[0094] In some respects, UE 504 may be ready to send communication to UE 502. UE 504 may have already sensed previous sidelink resources and successfully decoded the SCI from UE 506 and UE 508. UE 504 may attempt to reserve sidelink resources, and thus can check the availability of future sidelink resources reserved by UE 506 and UE 508 by sensing the sidelink channel within the sensing window. UE 504 may measure the RSRP of the signal from UE 508 in sidelink resource 510 and the RSRP of the signal from UE 506 in sidelink resource 512. If the observed RSRP (RSRP projection) meets an RSRP threshold (e.g., below the maximum RSRP), the corresponding sidelink resource can be used for reservation by UE 504. UE 504 may reserve sidelink resources (which may be randomly selected from available resources). In some respects, UE 504 may select and reserve sidelink resource 514 for transmission. This can be done within a time slot after which UE 506 and UE 508 have already used sidelink resources, and UE 504 may have sensed these sidelink resources earlier. UE 504 can select and reserve sidelink resources only when a threshold level (e.g., 20%, 30%, or 50% availability) is reached. UE 504 can increase or decrease the RSRP threshold as needed to reach the threshold level. UE 504 can select and reserve sidelink resources in the current time slot and up to two (or more) future time slots. Reservation can be aperiodic or periodic (e.g., SCI signal period between 0ms and 1000ms). Periodic resource reservation can be disabled.

[0095] During processing time T proc,0 Then and at another processing time T proc,1 Previously, there could be a resource selection trigger to initiate the selection of sidelink resources, followed by a resource selection window from which sidelink resources can be obtained. The resource selection window can be a time window from which sidelink resources can be selected, and the resource selection window can be extended for the remaining packet delay budget (PDB).

[0096] As indicated above, Figure 5 This is provided as an example. Other examples are available with reference to [the relevant information]. Figure 5 The examples described are different.

[0097] Figure 6 These are illustrations of examples 600, 602, and 604 based on the detection of a reserved CPE according to this disclosure.

[0098] When a UE performs Type 1 channel access to initiate a COT for PSCCH / PSSCH transmission, it can use one of two schemes. In the first scheme, the UE selects a pre-configured default CPE with its default starting location for communication in the time slot. In the second scheme, the UE selects a candidate CPE with its candidate starting location from one or more CPE starting candidates for the time slot. Candidate CPEs can be pre-configured according to the priority of PSCCH / PSSCH for each resource pool. In some respects, the UE can apply the first scheme if resource reservations have been sent or detected for the time slot where PSCCH / PSSCH transmission is expected and one or more RB sets. Otherwise, the UE can apply the second scheme.

[0099] Example 600 illustrates SCI0 and SCI1 indicating reservations. If a reservation is detected, the UE can use the default CPE to communicate in the time slot and RB set. Example 602 illustrates that if a reservation for the same sidelink resource (same time slot and same RB set) is detected and the RSRP threshold is met (e.g., signal strength is less than the RSRP threshold), the default CPE can be used for communication in the time slot and RB set because the signal is insufficient for inter-UE blocking.

[0100] Example 604 illustrates that if no reservation is detected, the UE can randomly select a CPE of each priority to avoid inter-UE conflicts. The mapping of the initial location of one or more CPEs for each priority can depend on pre-configuration. In some respects, the priority can be Layer 1 (L1) priority or Channel Access Priority Class (CAPC) priority.

[0101] Figure 7 This is a diagram illustrating Example 700 of the COT sharing problem according to this disclosure.

[0102] The UE can operate in an unlicensed sidelink (SL-U). If the first UE (UE1) determines that the channel is idle, UE1 can treat the channel as idle for the maximum duration or for the duration of the COT. If UE1 does not need to use the entire COT for PSSCH transmission or reception, UE1 can share the COT with another UE (such as with a second UE (UE2)). UE1 can indicate the RB and duration of the COT. UE1 can be the COT initiator, performing an LBT procedure and starting the COT. UE1 can transmit data to UE2 during the COT period in PSSCH communication. UE2 can be the COT responder and can provide PSFCH communication to UE1 in response to PSSCH communication during the COT period. UE2 can be considered the PSFCH sender. UE2 can perform a Type 2 LBT procedure, which is a "one-off" channel sensing with a duration (e.g., 16 μs) much shorter than that of a Type 1 LBT procedure.

[0103] The expected duration of the COT interruption gap between communications is 25 μs. If UE1 begins transmission within the COT interruption gap, UE1 maintains COT and UE2 cannot transmit. If UE1 does not begin transmission within the COT interruption gap, UE1 does not maintain COT and UE2 can transmit. UE2 may perform Type 2A channel access (16 μs) before transmission.

[0104] Example 700 illustrates a COT with a time slot in which UE1 (the initiator) intends to transmit. UE1 can share the COT with UE2 (the responder) and provides UE2 with an indication of the remaining duration of the COT in the COT Sharing Indication (COT-SI). Even with time-domain information for the shared COT provided, it remains unclear how to protect UE1's transmissions. That is, it is unclear in which part of the remaining COT UE2 can transmit. If UE2 can attempt to access the channel with LBT Type 2 and transmit anywhere in the COT (after decoding the COT-SI and before the COT end time marked by the remaining COT duration), there is a chance that UE2 will preempt the channel to prevent it from being used by UE1. As shown in Example 700, UE1 can discard transmissions for both time slots due to a re-evaluation or preemption check performed by UE1 resulting in a reselection. However, UE2 can access the channel and begin a sidelink transmission burst that would prevent UE1 from future re-accessing. The next two time slots were not reserved for UE1 or UE2, and therefore UE2 can continue to transmit its burst, which prevents UE1 from resuming transmission in its own COT (failed Type 2 access by UE1). If UE1 cannot transmit in its own COT, UE1's communication will be degraded and latency will increase.

[0105] As indicated above, Figure 7 This is provided as an example. Other examples are available with reference to [the relevant information]. Figure 7 The examples described are different.

[0106] Figure 8 This is an example diagram illustrating a COT shared offset according to this disclosure, 800.

[0107] In a COT-sharing framework within an unlicensed NR (NR-U) network, UE1 can perform a Type 1 LBT and acquire a COT. UE1 can share the COT and indicate a COT-SI to UE2, including the offset and duration of the shared COT. UE2 can choose not to access the shared COT before the offset to protect UE1's ability to access the shared COT. Example 800 illustrates a shared COT 802 for UE1, which has an area before offset 804 (UE1 area) that UE2 cannot access and an area after offset 804 that UE2 can access (UE2 area). UE1 can access (perform a Type 2 LBT) and transmit within the shared COT 802 in both the UE1 and UE2 areas. UE2 can access (perform a Type 2 LBT) and transmit only within the shared COT 802 in the UE2 area. Transmission within the shared COT 802 may mean that the transmission is within the RB set (20MHz LBT channel) acquired by Type 1 channel access (or Type 4 LBT) performed by UE1. In the time domain, transmission occurs between the COT-SI and the maximum COT duration. Different durations can be obtained by performing Type 1 channel access associated with a given CAPC. Higher priority maps to faster channel access with respect to a smaller random counter and a shorter COT duration.

[0108] As indicated above, Figure 8 This is provided as an example. Other examples are available with reference to [the relevant information]. Figure 8 The examples described are different.

[0109] Figure 9 These are illustrations of examples 900, 910, and 920 illustrating the gaps between sidelink transmissions according to this disclosure.

[0110] In some examples, the UE may send a CPE that includes the start of transmission during the gap between the first and second communications. The UE may send a CPE to begin transmission at a starting position prior to the first symbol of the second communication's scheduling. One or more CPE starting positions may exist prior to the starting position for a sidelink synchronization signal block (S-SSB), PSFCH communication, or another physical sidelink channel communication (e.g., PSCCH, PSSCH). The CPE starting position can be configured or indicated.

[0111] For the following two options, the CPE can be sent from the CPE starting point before the sidelink transmission: within the symbol exactly before the next automatic gain control (AGC) symbol; within the symbol exactly before the next AGC symbol for the 15 kHz subcarrier spacing (SCS); or within up to two symbols exactly before the next AGC symbol for the 30 kHz or 60 kHz SCS.

[0112] In some examples, UE2 can choose a CPE start location that is later than UE1's CPE start location. This can help UE1 achieve better channel access success in its own shared COT. In some aspects, the start location of the first CPE can be earlier than the start location of the second CPE. In some aspects, the LBT can be type 2A (16μs), type 2B (25μs), or type 2C (no CPE and at the beginning of the next symbol). The type 2A LBT can be before the AGC symbol. If the gap is 16μs and limited to 584μs, the responding UE can transmit a sidelink transmission on the channel after performing type 2C sidelink channel access. If the UE detects that the initiator terminated its transmission in the previous time slot, and if the selected CPE meets the gap of 16μs from the end of the COT initiator's transmission, the UE can upgrade from type 2A to type 2B or type 2C.

[0113] Example 900 illustrates an example of a COT 902 initiated by UE1 (Type 1 access) and shared with UE2. UE1 can transmit communication (PSSCH or PSCCH) in a first time slot 904. UE1 or UE2 can perform Type 2 access to transmit communication in a second time slot 906. A gap 908 may exist between the first time slot 904 and the second time slot 906. If the gap 908 is larger than the size protecting continuous transmission in COT 902 (e.g., 16 μs, 25 μs), UE2 can gain access and transmit communication in the second time slot 906, thus preventing UE1 from transmitting in the second time slot 906. If the gap 908 is the size protecting continuous transmission (or not larger than that size), UE1 can transmit communication in the second time slot 906 without being preempted by UE2. That is, UE1 can maintain a COT for multiple consecutive time slot transmissions (MCSt).

[0114] Example 910 illustrates an example where UE1 sends CPE 912 in COT 902 to reduce the size of gap 908 to the size protecting continuous transmissions performed by UE1. In some aspects, CPE 912 can be one or two symbols in size. In some examples, CPE 912 can be a default CPE with a configured size and starting position. The default CPE may not reduce gap 908 to the size protecting continuous transmissions.

[0115] In some examples, CPE 912 can be one of multiple candidate start locations. The start location can vary at least in part based on the SCS. In some aspects, for a 15kHz SCS, the set of values ​​for candidate CPE locations may include the value { , , , , , , },in It is the starting position of the next AGC symbol (when the CPE starting position is...). (When the CPE length is 0) It is the starting position of the first symbol immediately before the next AGC symbol, and It is the starting position of the second symbol immediately preceding the next AGC symbol. For a 30kHz SCS, the set of values ​​for a symbol-length CPE window is { , , For a 30kHz SCS, the set of values ​​for a CPE window of two symbol lengths is { , , , , , , For a 60kHz SCS, the set of values ​​for a symbol-length CPE window is { , For a 60kHz SCS, the set of values ​​for two symbol-length CPE windows is { , , Example 920 shows UE1 transmitting a CPE 922 with an initial positioning that ensures the gap 908 is reduced to a size that protects continuous transmission.

[0116] In some examples, UE1 may follow either the first scheme or the second scheme. In the first scheme, UE1 may select a pre-configured default CPE with a default CPE starting location. In the second scheme, UE1 may use a CPE with a starting location randomly selected from multiple candidate CPEs. One or more candidate CPEs may be mapped to transmission priorities. In some examples, UE1 may use only the pre-configured default CPE.

[0117] UE1 can have a transmission with a different priority than the transmission made by UE2 in the second time slot 906. UE1's transmission can have a higher priority, the same priority, or a lower priority. In examples 900, 910, and 920, UE1 initiates COT 902. In other examples, UE1 can respond to a COT initiated by UE2.

[0118] As indicated above, Figure 9 This is provided as an example. Other examples are available with reference to [the relevant information]. Figure 9 The examples described are different.

[0119] Figure 10 This is an illustration of Example 1000 of shared COT 1002 according to this disclosure. UE1 can be the COT initiator. UE0 can receive COT-SI from UE1 to share the time slot. n COT starting at +2, and UE0 can prepare to start from slot 1002 in COT initiated by UE1. n +2 to begin transmission. UE2 can be the COT initiator, or it can transmit in COT1002 initiated by UE1 or in another COT initiated by another UE.

[0120] For COT 1002, UE1 can be in the time slot. n Initiating COT 1002, and then in the time slot n +2 shares COT 1002 with UE0. UE2 can operate in time slots. n COT can be initiated in +2, or UE2 can be in a time slot. n +2 uses COT 1002. If targeting a time slot... n If one or more RB sets expected to be sent by +2 and UE0 are sent or a reservation is detected, then UE0 can choose the default CPE 1004 (which is Figure 10 Case 1). If there is no time slot specified. n If one or more RB sets expected to be sent by +2 and UE0 are sent or a reservation is detected, then UE0 can randomly select CPE 1006 from a set of multiple CPEs pre-configured according to the priority of PSCCH / PSSCH. Figure 10 Case 2). For priority value p0, the set of CPEs can be { , }. For priority value p1, the set of CPEs can be p2: { , }

[0121] For Case 1, if the default CPE 1004 cannot ensure that the gap 1008 size is less than or equal to 16 μs, then Type 2B and Type 2C cannot be used for UE0, even if UE0 detects that the initiating UE's transmission terminated in the previous time slot. For Case 2, if the randomly selected CPE cannot ensure that the gap 1008 size is less than or equal to 16 μs, then Type 2B and Type 2C cannot be used for UE0, even if UE0 detects that the UE-initiated transmission terminated in the previous time slot. If the gap 1008 size cannot be guaranteed for the default CPE 1004 or the selected CPE 1006, then UE0 may be unable to access the shared COT because Type 2B or 2C cannot be used. Failed access may increase latency and waste signaling resources.

[0122] As indicated above, Figure 10 This is provided as an example. Other examples are available with reference to [the relevant information]. Figure 10 The examples described are different.

[0123] Figure 11 This is an illustration of example 1100 of selecting a CPE in a shared COT according to this disclosure.

[0124] The UE may intend to transmit communication on the PSCCH or PSSCH in the current time slot. According to the various aspects described herein, the UE may select a first CPE based on one or more conditions related to whether transmission or reservation is detected, which ensures that the size of the gap between the previous and current time slots (e.g., ≤16 μs) protects sidelink transmissions (transmissions in consecutive time slots) in the shared COT. The UE may select the first CPE at least in part based on the detection of transmission or reservation in the current time slot and the UE initiator terminating transmission in the previous time slot. The UE may further select the first CPE at least in part based on the fact that the default CPE for the UE does not ensure that the gap is the size protecting sidelink transmissions in the shared COT. The UE may receive COT-SI from the initiator COT (UE1) and intend to transmit at the beginning of the shared COT area (e.g., starting from the time slot indicated by the offset parameter in the COT-SI). UE0 may transmit communication using CPE 1104 starting from the time slot after offset 1110, where UE0 is allowed to transmit. By selecting a CPE that ensures the gap when the default CPE does not guarantee it, and when transmission or reservation is detected, UE0 can protect sidelink transmissions in the shared COT. Protecting sidelink transmissions in the shared COT can improve resource utilization, thereby reducing latency and saving signaling resources.

[0125] Example 1102 illustrates a CPE 1112 that ensures the gap for UE2 is reduced to the size of continuous side-link transmissions in the protected shared COT. Example 1102 also illustrates UE2's design for use in the slave time slot of UEX. n Transmission begins in the shared COT starting at +2, which is the first time slot after the indicated offset. The UE can detect UEX in the time slot. n The transmission is terminated in +1, where UEX is the COT initiator, which may be the same as or different from UE1.

[0126] As indicated above, Figure 11 This is provided as an example. Other examples are available with reference to [the relevant information]. Figure 11 The examples described are different.

[0127] Figure 12This is an illustration of example 1200 of selecting a CPE in a shared COT according to this disclosure. Example 1200 shows a UE 1210 (e.g., UE 120, UE1) and another UE 1220 (e.g., UE 120, UE2) that can send communications via a sidelink. Example 1200 shows UE 1220 initiating a COT.

[0128] As shown by reference numeral 1225 in the attached figure, UE 1220 can send a COT-SI for a shared COT. The COT-SI can indicate when the shared COT starts, the duration of the shared COT, and the offset of the shared COT. The offset can be the point at which UE 1210 can access the shared COT (e.g., the start of a specified time slot). UE 1220 can perform a Type 1 access to initiate a COT.

[0129] As shown by reference numeral 1230 in the attached figure, UE 1210, as a responding UE, may select a first CPE (its sidelink communication in the protection shared COT) based at least in part on the detection of transmission or reservation, at least in part on the default CPE not reducing the gap to the size of the sidelink transmission in the protection shared COT, and at least in part on the detection of a terminated transmission by UE 1220 in the previous time slot.

[0130] As shown by reference numeral 1235 in the attached figure, UE 1210 may attempt to transmit using a first CPE. This may include performing Type 2 access and transmitting communications based at least in part on the result of Type 2 access. Attempting to transmit may include transmitting a CPE at the starting location of the CPE in the slot before the start of the current time slot.

[0131] As indicated above, Figure 12 This is provided as an example. Other examples are available with reference to [the relevant information]. Figure 12 The examples described are different.

[0132] Figure 13 This is an example diagram illustrating the selection of a CPE in a shared COT according to this disclosure, specifically example 1300.

[0133] In some respects, the UE can further select the first CPE based at least in part on the detection of a resource reservation with a priority value greater than the expected PSCCH / PSSCH transmission priority. Example 1300 shows that UE0 has a transmission priority of p0, UE2 has a transmission priority of p2, and UE0 detects that UE2 is in a time slot nThere is a reservation in +2. When UE0 has a higher priority (lower priority value) than UE2 (e.g., p0 < p2), UE0 can select a first CPE 1304 with a gap less than or equal to 16 μs at least partially based on the priority of the communication in the current time slot and one or more RB sets being not less than the priority of the communication scheduled or reserved by another UE in the current time slot and one or more RB sets. When UE0 has an equal or lower priority (higher priority value) compared to UE2 (e.g., p0 ≥ p2), UE0 can select a default CPE at least partially based on the priority of the communication in the current time slot and one or more RB sets being not greater than the priority of the communication scheduled or reserved by another UE in the current time slot and one or more RB sets. By avoiding a low-priority UE blocking a high-priority UE, the channel access probability may increase for transmissions within a high-priority COT. Example 1302 shows that the same rules can also apply to UE2 when UE2 is in a shared COT initiated by UEX. In some aspects, UE2 may have a lower priority than the reservation from UE0, and thus UE2 can select a default CPE.

[0134] As indicated above, Figure 13 is provided as an example. Other examples may be different from the examples Figure 13 described.

[0135] Figure 14 are diagrams illustrating Examples 1400 and 1402 of selecting a CPE in a shared COT according to the present disclosure.

[0136] Examples 1400 and Example 1402 show candidate CPEs with different priorities. The UE can further select a first CPE that reduces the gap to a size that protects sidelink transmissions in the shared COT at least partially based on the first CPE belonging to a set of CPEs preconfigured for the priority of the communication in the current time slot and one or more RB sets. In some aspects, as shown in Example 1400, the transmission of UE0 in the current time slot (e.g., time slot n +2) can be associated with p0, and the set of CPEs preconfigured for p0 can be { T sym1 + 16 μs, T sym1 + 25 μs}, where T sym1 is the starting positioning of the first symbol just before the next AGC symbol, and the CPE starting from T sym1 + 16 μs can reduce the gap to a size that protects sidelink transmissions in the shared COT (e.g., 16 μs). Thus, UE0 can select from Tsym1 CPE starting at +16μs is used for the current time slot (e.g., time slot). n The expected transmission in +2). In some aspects, as shown in Example 1402, UE2 in the current time slot (e.g., time slot) n The transmission in +2) can be associated with p2, and the set of CPEs pre-configured for p2 is { T sym1 +34μs, T sym1 +43μs}, where the CPE that reduces the gap to the size of the sidelink transmission in the protected shared COT (e.g., 16μs) is not included in the set of CPEs pre-configured for p2, so UE2 can select the default CPE at least in part based on the reservation detected in the current time slot (e.g., +43μs). T sym1 +25μs).

[0137] As indicated above, Figure 14 This is provided as an example. Other examples are available with reference to [the relevant information]. Figure 14 The examples described are different.

[0138] Figure 15 These are illustrations of examples 1500 and 1502 of selecting a CPE in a shared COT according to this disclosure.

[0139] Example 1500 illustrates that a UE can further select a first CPE based at least in part on signal strength. The UE can transmit communication in the current time slot based at least in part on meeting an Energy Detection Threshold (EDT). The UE can further select a first CPE based at least in part on the fact that the expected signal strength (e.g., RSRP) for communication does not meet the EDT. Not meeting the EDT can include a signal strength less than the EDT. Multiple UEs can share resources by transmitting with less power. As shown in Example 1500, when the measured RSRP level for transmission in the current time slot is less than the EDT, UE0 can select a CPE that reduces the slot to the size of a sidelink transmission in the protected shared COT (e.g., 16 μs); otherwise, UE0 can select a default CPE (e.g., T) based at least in part on the detection of a reservation in the current time slot. sym1 +25μs).

[0140] As indicated above, Figure 15 This is provided as an example. Other examples are available with reference to [the relevant information]. Figure 15 The examples described are different.

[0141] Figure 16 These are illustrations of examples 1600 and 1602 of selecting a CPE in a shared COT according to this disclosure.

[0142] In some respects, if neither a transmission resource reservation nor a detected resource reservation is made for the time slot and RB set for the expected PSCCH / PSSCH transmission, and if the UE detects that the COT initiator terminated its transmission in the previous time slot, the UE can select the first CPE to be transmitted via the protection side link. For example, as shown in 1600 and 1602, UE0 can receive a COT-SI indicating the offset and duration of the shared COT from UE1, and UE0 may intend to transmit from the time slot... n Transmission will begin in the time slot starting at +2, which is the first time slot after the indicated offset. If UE0 neither transmits resource reservations nor detects for the current time slot (e.g., time slot...), n +2) resource reservation, and UE0 detects that UE1 (COT initiator) has reserved resources in the previous time slot (e.g., time slot). n If UE0 terminates its transmission in +1), then UE0 can choose to reduce the gap to the size of the sidelink transmission in the protected shared COT (e.g., 16 μs) of the first CPE.

[0143] As indicated above, Figure 16 This is provided as an example. Other examples are available with reference to [the relevant information]. Figure 16 The examples described are different.

[0144] Figure 17 This is an illustration of example 1700, which illustrates the selection of a CPE based on one or more conditions according to this disclosure. Example 1700 shows a UE 1710 (e.g., UE 120, UE1) and another UE 1720 (e.g., UE 120, UE2) that can transmit communication via a sidelink. Example 1700 shows UE 1720 initiating a COT.

[0145] In some respects, if the first CPE for reducing gaps to protect continuous sidelink transmissions is pre-configured for a priority associated with the expected PSCCH / PSSCH transmission, the UE can select the first CPE. For the priority associated with the expected PSCCH / PSSCH transmission, a fixed CPE can be selected instead of randomly selecting a CPE from a set of multiple pre-configured CPEs.

[0146] As shown by reference numeral 1725, UE 1720 can transmit COT-SI. As shown by reference numeral 1730, UE 1710 can select a first CPE based at least in part on the absence of a reservation or transmission detected for the current time slot and at least in part on the detection that the initiating UE's transmission was terminated in the previous time slot. As shown by reference numeral 1735, UE 1710 can attempt to transmit using the CPE.

[0147] As indicated above, Figure 17This is provided as an example. Other examples are available with reference to [the relevant information]. Figure 17 The examples described are different.

[0148] Figure 18 These are illustrations of examples 1800 and 1802 of selecting a CPE in a shared COT according to this disclosure.

[0149] In some respects, Examples 1800 and 1802 illustrate that a UE can select a first CPE if a first CPE, which ensures the gap is reduced to the size of sidelink transmissions in the protected shared COT, is pre-configured for a priority associated with the expected PSCCH / PSSCH transmission. As shown in Examples 1800 and 1802, UE0 intends to transmit PSCCH / PSSCH in the current time slot (e.g., time slot n+2), and UE0's PSCCH / PSSCH transmission is associated with p0. In some respects, when the set of CPEs pre-configured for p0 is {T} sym1 +16μs, T sym1 At +25μs}, where T sym1 It is the starting position of the first symbol immediately preceding the next AGC symbol, and UE0 can be at least partially based on the first CPE (e.g., {T sym1 The first CPE is selected to reduce the gap to the size of the sidelink transmission in the protected shared COT (e.g., 16 μs) using +16 μs, and this first CPE may belong to the CPE that is used for transmission from the current time slot (e.g., time slot). n +2) The expected transmission begins with the pre-configured set of CPEs associated with the priority. In some respects, when the pre-configured set of CPEs for p0 is {T} sym1 +52μs, T sym1 At +61μs}, where T sym1 It is the starting position of the first symbol immediately preceding the next AGC symbol, and UE0 can be at least partially based on the first CPE (e.g., {T sym1 +16μs} is not included for use with the current time slot (e.g., time slot). n +2) Starting with the expected transmission associated with the priority and the pre-configured CPE set, from the current time slot (e.g., time slot). n +2) The expected transmission begins with a CPE randomly selected from a pre-configured set of CPEs based on the associated priority.

[0150] As indicated above, Figure 18 This is provided as an example. Other examples are available with reference to [the relevant information]. Figure 18 The examples described are different.

[0151] Figure 19This is a diagram illustrating an example process 1900 performed at a UE or a device of a UE in some respects according to this disclosure. Example process 1900 is an example in which a device or UE (e.g., UE 120) performs operations associated with selecting a CPE for sidelink transmission.

[0152] like Figure 19 As shown, in some aspects, process 1900 may include selecting a first CPE (box 1910) to reduce the gap to that size based at least in part on the reservation of transmission or detection for the current time slot and one or more RB sets and at least in part on the fact that the default CPE cannot reduce the gap between the previous time slot and the current time slot when the initiating UE's transmission to the COT is terminated. In some aspects, the UE (e.g., using...) Figure 21 The communication manager 2106 described above can select the first CPE to reduce the gap to that size based at least in part on the reservation of transmission or detection for the current time slot and one or more RB sets and at least in part on the fact that the default CPE cannot reduce the gap between the previous time slot and the current time slot when the initiating UE’s transmission to the COT is terminated to the size of the side link transmission in the protected shared COT, as described above.

[0153] like Figure 19 Further shown, in some aspects, process 1900 may include attempting to transmit communication in one or more RB sets starting from the current time slot using a first CPE (box 1920). In some aspects, the UE (e.g., using...) Figure 21 The communication manager 2106 described above can attempt to send communication in one or more RB sets starting from the current time slot using the first CPE, as described above.

[0154] Process 1900 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 in this document.

[0155] In a first aspect, procedure 1900 includes receiving a COT-SI from the initiating UE indicating the offset and duration of the COT, wherein the current time slot is the first time slot after the offset of the UE in the COT.

[0156] In the second aspect, either alone or in combination with the first aspect, the selection of the first CPE includes further selecting the first CPE based at least in part on the priority of communications in the current time slot and one or more RB sets not being less than the priority of communications scheduled or reserved by another UE in the current time slot and one or more RB sets.

[0157] In the third aspect, either alone or in combination with one or more of the first and second aspects, the first CPE is in a set of CPEs pre-configured for the priority of communication in the current time slot and one or more RB sets.

[0158] In the fourth aspect, the selection of the first CPE, either alone or in combination with one or more of the first to third aspects, includes further selecting the first CPE based at least in part on the fact that the signal strength expected for the communication does not meet the energy detection threshold.

[0159] In the fifth aspect, either alone or in combination with one or more of the first to fourth aspects, the expected signal strength for communication is correlated with the sidelink reference signal received power measurement.

[0160] In the sixth aspect, either alone or in combination with one or more of the first to fifth aspects, the energy detection threshold is not met, including being less than the energy detection threshold.

[0161] In the seventh aspect, alone or in combination with one or more of the first to sixth aspects, the size is less than or equal to 16 microseconds.

[0162] although Figure 19 An example box for process 1900 is shown, but in some respects, it differs from... Figure 19 Compared to the boxes depicted, process 1900 may include additional boxes, fewer boxes, different boxes, or boxes arranged in a different manner. Additionally or alternatively, two or more boxes in the process 1900 may be executed in parallel.

[0163] Figure 20 This is a diagram illustrating an example process 2000 performed at a UE or a device of a UE in some respects according to this disclosure. Example process 2000 is an example in which a device or UE (e.g., UE 120) performs operations associated with selecting a CPE for sidelink transmission.

[0164] like Figure 20 As shown, in some aspects, process 2000 may include, at least in part, selecting a first CPE (block 2010) to reduce the gap between the previous time slot and the current time slot when the initiating UE's transmission to the COT is terminated to the size of sidelink transmissions in the protected shared COT, based on the absence of transmission or detection of reservations for the current time slot and one or more RB sets. In some aspects, the UE (e.g., using...) Figure 21 The Communication Manager 2106 described above may, at least in part, select a first CPE that reduces the gap between the previous time slot and the current time slot when the initiating UE’s transmission to the COT is terminated to the size of the sidelink transmission in the protected shared COT, based on the fact that no transmission or reservation is detected for the current time slot and one or more RB sets.

[0165] like Figure 20 As further shown, in some aspects, process 2000 may include attempting to transmit communication in one or more RB sets starting from the current time slot using a first CPE (box 2020). In some aspects, the UE (e.g., using...) Figure 21 The communication manager 2106 described above can attempt to send communication in one or more RB sets starting from the current time slot using the first CPE, as described above.

[0166] Process 2000 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 in this document.

[0167] In a first aspect, process 2000 includes receiving a COT-SI from the initiating UE indicating the offset and duration of the COT, wherein the current time slot is the first time slot after the offset of the UE in the COT.

[0168] In the second aspect, either alone or in combination with the first aspect, the first CPE is in a set of CPEs pre-configured for the priority of communication in the current time slot and one or more RB sets.

[0169] In the third aspect, alone or in combination with one or more of the first and second aspects, the size is less than or equal to 16 microseconds.

[0170] although Figure 20 The example box for Process 2000 is shown, but in some respects, it differs from... Figure 20 Compared to the boxes depicted, process 2000 may include additional boxes, fewer boxes, different boxes, or boxes arranged in a different manner. Additionally or alternatively, two or more boxes in the process 2000 may be executed in parallel.

[0171] Figure 21 This is a diagram of an example device 2100 for wireless communication according to the present disclosure. Device 2100 may be a UE, or a UE may include device 2100. In some aspects, device 2100 includes a receiving component 2102, a transmitting component 2104, and / or a communication manager 2106 that are communicable to each other (in some aspects, via one or more buses and / or one or more other components). In some aspects, the communication manager 2106 is combined with... Figure 1 The described communication manager 140. As shown, device 2100 can communicate with another device 2108 (such as a UE or a network node (such as a CU, DU, RU or base station)) using receiving component 2102 and transmitting component 2104.

[0172] In some respects, device 2100 can be configured to perform the functions described herein. Figures 1 to 18 One or more operations described herein. Additionally or alternatively, device 2100 may be configured to perform one or more processes described herein, such as Figure 19 The process 1900, Figure 20 Processes 2000 or combinations thereof. In some aspects, apparatus 2100 and / or Figure 21 One or more components shown may include combinations Figure 2 One or more components of the described UE. Additionally or alternatively, Figure 21 One or more components shown can be combined Figure 2 Implemented within one or more of the described components. Additionally or alternatively, one or more of the components in this group may be implemented at least partially as software stored in one or more memories. In some aspects, a component (or a portion of a component) may be implemented as instructions or code stored in a non-transitory computer-readable medium and executable by one or more controllers or processors to perform the function or operation of the component.

[0173] Receiver 2102 may receive communications from device 2108, such as reference signals, control information, data communications, or combinations thereof. Receiver 2102 may provide the received communications to one or more other components of device 2100. In some aspects, receiver 2102 may perform signal processing (such as filtering, amplification, demodulation, analog-to-digital conversion, demultiplexing, deinterleaving, demapping, equalization, interference cancellation, or decoding, etc.) on the received communications and may provide the processed signals to one or more other components of device 2100. In some aspects, receiver 2102 may include combinations of... Figure 2 The described UE includes one or more antennas, one or more modems, one or more demodulators, one or more MIMO detectors, one or more receiver processors, one or more controllers / processors, one or more memories, or combinations thereof.

[0174] Transmitting component 2104 may transmit communications, such as reference signals, control information, data communications, or combinations thereof, to device 2108. In some aspects, one or more other components of device 2100 may generate communications and provide the generated communications to transmitting component 2104 for transmission to device 2108. In some aspects, transmitting component 2104 may perform signal processing (such as filtering, amplification, modulation, digital-to-analog conversion, multiplexing, interleaving, mapping, or encoding, etc.) on the generated communications and may transmit the processed signals to device 2108. In some aspects, transmitting component 2104 may include combinations of... Figure 2The described UE may include one or more antennas, one or more modems, one or more modulators, one or more transmit MIMO processors, one or more transmit processors, one or more controllers / processors, one or more memories, or combinations thereof. In some aspects, the transmit component 2104 may co-located with the receive component 2102 in one or more transceivers.

[0175] The communication manager 2106 may support the operation of the receiving component 2102 and / or the transmitting component 2104. In some aspects, the communication manager 2106 may receive information associated with configuring the reception of communication by the receiving component 2102 and / or the transmission of communication by the transmitting component 2104. Additionally or alternatively, the communication manager 2106 may generate control information and / or provide control information to the receiving component 2102 and / or the transmitting component 2104 to control the reception and / or transmission of communication.

[0176] In some respects, the communication manager 2106 may select a first CPE to reduce the gap to that size, based at least in part on the reservation of transmission or detection for the current time slot and one or more RB sets, and at least in part on the fact that the default CPE cannot reduce the gap between the previous time slot and the current time slot when the initiating UE's transmission to the COT is terminated to the size of sidelink transmission in the protected shared COT. The communication manager 2106 may attempt to transmit communication in one or more RB sets starting from the current time slot using the first CPE.

[0177] The receiving component 2102 can receive a COT-SI indicating the offset and duration of the COT from the initiating UE, wherein the current time slot is the first time slot after the offset of the UE in the COT.

[0178] In some respects, the communication manager 2106 may, at least in part, select a first CPE that reduces the gap between the previous time slot and the current time slot when the initiating UE's transmission to the COT is terminated to the size of sidelink transmissions in the protected shared COT, based on the absence of transmission or the detection of reservations for the current time slot and one or more RB sets. The communication manager 2106 may attempt to transmit communication in one or more RB sets starting from the current time slot using the first CPE.

[0179] The receiving component 2102 can receive a COT-SI indicating the offset and duration of the COT from the initiating UE, wherein the current time slot is the first time slot after the offset of the UE in the COT.

[0180] Figure 21 The number and arrangement of components shown are provided as an example. In reality, with... Figure 21 Compared to the components shown, there may be additional components, fewer components, different components, or components arranged in a different manner. Furthermore, Figure 21 The two or more components shown can be implemented within a single component, or Figure 21 The single component shown can be implemented as multiple distributed components. Additionally or alternatively, Figure 21 The set (one or more) components shown are executable and described as being composed of Figure 21 The other set of components shown performs one or more functions.

[0181] The following provides an overview of some aspects of this disclosure.

[0182] Aspect 1: A method for wireless communication performed by a user equipment (UE), the method comprising: selecting a first CPE that reduces the gap to the size of the current time slot when the initiating UE’s transmission for channel occupied time (COT) is terminated, based at least in part on the reservation of a current time slot and one or more resource block (RB) sets, and at least in part on the fact that the default cyclic prefix spread (CPE) cannot reduce the gap between the current time slot and the previous time slot to the size of a sidelink transmission in a protected shared COT; and attempting to transmit communication in the one or more RB sets starting from the current time slot using the first CPE.

[0183] Aspect 2: According to the method of aspect 1, the method further includes receiving from the initiating UE a COT sharing indication (COT-SI) indicating the offset and duration of the COT, wherein the current time slot is the first time slot after the offset of the UE in the COT.

[0184] Aspect 3: The method according to any one of Aspects 1 to 2, wherein selecting the first CPE includes further selecting the first CPE based at least in part on the priority of the communication in the current time slot and the one or more RB sets being no less than the priority of the communication scheduled or reserved by another UE in the current time slot and the one or more RB sets.

[0185] Aspect 4: The method according to any one of Aspects 1 to 3, wherein the first CPE is in a set of CPEs pre-configured for the priority of the communication in the current time slot and the one or more RB sets.

[0186] Aspect 5: The method according to any one of Aspects 1 to 4, wherein selecting the first CPE includes further selecting the first CPE based at least in part on the fact that the expected signal strength for the communication does not meet an energy detection threshold.

[0187] Aspect 6: According to the method of aspect 5, the expected signal strength for the communication is associated with a sidelink reference signal received power measurement.

[0188] Aspect 7: According to the method of aspect 5, wherein not satisfying the energy detection threshold includes being less than the energy detection threshold.

[0189] Aspect 8: The method according to any one of Aspects 1 to 7, wherein the size is less than or equal to 16 microseconds.

[0190] Aspect 9: A method of wireless communication performed by a user equipment (UE), the method comprising: selecting a first cyclic prefix extension (CPE) to reduce the gap between the previous time slot when the initiating UE’s transmission for Channel Occupied Time (COT) is terminated and the current time slot to the size of sidelink transmission in a protected shared COT, based at least in part on the absence of transmission or detection of reservation for the current time slot and one or more resource blocks (RB) sets; and attempting to transmit communication from the current time slot using the first CPE in the one or more RB sets.

[0191] Aspect 10: According to the method of aspect 9, the method further includes receiving from the initiating UE a COT sharing indication (COT-SI) indicating the offset and duration of the COT, wherein the current time slot is a first time slot after the offset of the UE in the COT.

[0192] Aspect 11: The method according to any one of Aspects 9 to 10, wherein the first CPE is in a set of CPEs pre-configured for the priority of the communication in the current time slot and the one or more RB sets.

[0193] Aspect 12: The method according to any one of Aspects 9 to 11, wherein the size is less than or equal to 16 microseconds.

[0194] Aspect 13: An apparatus for wireless communication at a device, the apparatus comprising: one or more processors; one or more memories coupled to the one or more processors; and instructions stored in the one or more memories and executable by the one or more processors to cause the apparatus to perform the method according to one or more of aspects 1 to 12.

[0195] Aspect 14: An apparatus for wireless communication at a device, the apparatus comprising one or more memories and one or more processors coupled to the one or more memories, the one or more processors being configured to cause the device to perform the method according to one or more of aspects 1 to 12.

[0196] Aspect 15: An apparatus for wireless communication, the apparatus comprising at least one component for performing the method according to one or more of aspects 1 to 12.

[0197] Aspect 16: A non-transitory computer-readable medium storing code for wireless communication, the code including instructions executable by one or more processors to perform the method according to one or more of aspects 1 to 12.

[0198] Aspect 17: A non-transitory computer-readable medium storing a set of instructions for wireless communication, the set of instructions comprising one or more instructions that, when executed by one or more processors of a device, cause the device to perform the method according to one or more of aspects 1 to 12.

[0199] Aspect 18: A device for wireless communication, the device including a processing system comprising one or more processors and one or more memories coupled to the one or more processors, the processing system being configured to cause the device to perform the method according to one or more of aspects 1 to 12.

[0200] Aspect 19: An apparatus for wireless communication at a device, the apparatus comprising one or more memories and one or more processors coupled to the one or more memories, the one or more processors being individually or collectively configured to cause the device to perform the method according to one or more of aspects 1 to 12.

[0201] While the foregoing disclosure provides examples and descriptions, it is not intended to be exhaustive or to limit aspects to the precise form disclosed. Modifications and variations can be made based on the foregoing disclosure, or from various aspects of practice.

[0202] As used herein, the term "component" is intended to be interpreted broadly as hardware and / or a combination of hardware and software. Whether referred to as software, firmware, middleware, microcode, hardware description language, or other names, "software" should be interpreted broadly as meaning instructions, instruction sets, code, code segments, program code, programs, subroutines, software modules, applications, software applications, software packages, routines, subroutines, objects, executable files, threads of execution, procedures, and / or functions, etc. As used herein, a "processor" is implemented in hardware and / or a combination of hardware and software. It will be apparent to those skilled in the art that the systems and / or methods described herein can be implemented in various forms of hardware and / or combinations of hardware and software. The actual dedicated control hardware or software code used to implement these systems and / or methods is not limiting in any way. Therefore, no specific software code is referenced in this document to describe the operation and behavior of the systems and / or methods, as those skilled in the art will understand that the software and hardware can be designed, at least in part, based on the descriptions herein, to implement the systems and / or methods.

[0203] Hardware and data processing means for implementing the various exemplary logic, logic blocks, modules, and circuits described herein can be implemented or executed using general-purpose single-chip or multi-chip processors, digital signal processors (DSPs), application-specific integrated circuits (ASICs), field-programmable gate arrays (FPGAs) or other programmable logic devices, discrete gate or transistor logic, discrete hardware components, or any combination thereof designed to perform the functions described herein. A general-purpose processor can be a microprocessor, or any conventional processor, controller, microcontroller, or state machine. A processor can also be implemented as a combination of computing devices, in some aspects such as a combination of a DSP and a microprocessor, multiple microprocessors, one or more microprocessors combined with a DSP core, or any other such configuration. In some aspects, specific processes and methods can be executed by circuitry dedicated to a given function.

[0204] As used in this article, depending on the context, "meeting the threshold" can mean a value greater than the threshold, greater than or equal to the threshold, less than the threshold, less than or equal to the threshold, equal to the threshold, not equal to the threshold, etc.

[0205] Although specific combinations of features are set forth in the claims and / or disclosed in the specification, these combinations are not intended to limit the disclosure of various aspects. Many of these features may be combined in ways not specifically set forth in the claims and / or not disclosed in the specification. The disclosure of various aspects includes each dependent claim in combination with each other claim in the set of claims. As used herein, the phrase “at least one of” in the list of items refers to any combination of these items, including a single member. As an example, “at least one of a, b, or c” is intended to cover: a, b, c, a+b, a+c, b+c, and a+b+c, as well as any combination having multiple identical elements (e.g., a+a, a+a+a, a+a+b, a+a+c, a+b+b, a+c+c, b+b, b+b+b, b+b+c, c+c, and c+c+c, or any other ordering of a, b, and c).

[0206] No element, action, or instruction used herein should be construed as essential or necessary unless explicitly stated otherwise. Furthermore, as used herein, the articles “a” and “an” are intended to include one or more items and are used interchangeably with “one or more.” Furthermore, as used herein, the article “described” is intended to include one or more items mentioned in connection with the article “described” and is used interchangeably with “one or more.” Furthermore, as used herein, the terms “group” and “cluster” are intended to include one or more items and are used interchangeably with “one or more.” If only one item is desired, the phrase “only one” or similar terminology will be used. Furthermore, as used herein, the terms “have,” “possess,” “have,” etc., are intended to be open-ended terms that do not limit the elements they modify (e.g., an element “having” A may also have B). Furthermore, the phrase “based on” is intended to mean “at least partially based on” unless otherwise explicitly stated. Furthermore, as used herein, the term “or” is intended to be inclusive when used in a series and is interchangeable with “and / or” unless otherwise explicitly stated (e.g., in the case of its use in conjunction with “any” or “only one”).

Claims

1. An apparatus for wireless communication at a user equipment (UE), the apparatus comprising: One or more memory units; and One or more processors coupled to the one or more memories, the one or more processors being individually or collectively configured to: The first CPE that reduces the gap to the size of the current time slot is selected based at least in part on the reservation of the current time slot and one or more resource block (RB) sets, and at least in part on the fact that the default cyclic prefix extension (CPE) cannot reduce the gap between the previous time slot and the current time slot when the initiating UE’s transmission of the channel occupied time (COT) is terminated to the size of the side link transmission in the protection shared COT. as well as An attempt is made to send communication from the current time slot in one or more RB sets using the first CPE.

2. The apparatus of claim 1, wherein the one or more processors are individually or jointly configured to receive from the initiating UE a COT sharing indication (COT-SI) indicating the offset and duration of the COT, wherein the current time slot is a first time slot following the offset of the UE in the COT.

3. The apparatus of claim 1, wherein, in order to select the CPE, the one or more processors are individually or jointly configured to further select the CPE based at least in part on the priority of the communication in the current time slot and the one or more RB sets being no less than the priority of the communication scheduled or reserved by another UE in the current time slot and the one or more RB sets.

4. The apparatus of claim 1, wherein the first CPE is in a set of CPEs pre-configured for the current time slot and the priority of the communication in the one or more RB sets.

5. The apparatus of claim 1, wherein, in order to select the CPE, the one or more processors are individually or collectively configured to further select the CPE based at least in part on the fact that the expected signal strength for the communication does not meet an energy detection threshold.

6. The apparatus of claim 5, wherein the signal strength expected for the communication is associated with a sidelink reference signal received power measurement.

7. The apparatus of claim 5, wherein not satisfying the energy detection threshold includes being less than the energy detection threshold.

8. The device of claim 1, wherein the size is less than or equal to 16 microseconds.

9. An apparatus for wireless communication at a user equipment (UE), the apparatus comprising: One or more memory units; and One or more processors coupled to the one or more memories, the one or more processors being individually or collectively configured to: At least in part, based on the fact that no transmission or reservation was detected for the current time slot and one or more resource blocks (RBs), a first cyclic prefix extension (CPE) is selected to reduce the gap between the previous time slot when the initiating UE's transmission for Channel Occupied Time (COT) is terminated and the current time slot to the size of sidelink transmissions in the protection shared COT; and An attempt is made to send communication from the current time slot in one or more RB sets using the first CPE.

10. The apparatus of claim 9, wherein the one or more processors are individually or jointly configured to receive from the initiating UE a COT sharing indication (COT-SI) indicating the offset and duration of the COT, wherein the current time slot is a first time slot following the offset of the UE in the COT.

11. The apparatus of claim 9, wherein the first CPE is in a set of CPEs pre-configured for the current time slot and the priority of the communication in the one or more RB sets.

12. The device of claim 9, wherein the size is less than or equal to 16 microseconds.

13. A method for wireless communication performed by a user equipment (UE), the method comprising: The first CPE that reduces the gap to the size of the current time slot is selected based at least in part on the reservation of the current time slot and one or more resource block (RB) sets, and at least in part on the fact that the default cyclic prefix extension (CPE) cannot reduce the gap between the previous time slot and the current time slot when the initiating UE’s transmission of the channel occupied time (COT) is terminated to the size of the side link transmission in the protection shared COT. as well as An attempt is made to send communication from the current time slot in one or more RB sets using the first CPE.

14. The method of claim 13, further comprising receiving from the initiating UE a COT sharing indication (COT-SI) indicating an offset and duration of the COT, wherein the current time slot is a first time slot following the offset of the UE in the COT.

15. The method of claim 13, wherein selecting the first CPE further comprises selecting the first CPE based at least in part on the priority of the communication in the current time slot and the one or more RB sets being no less than the priority of the communication scheduled or reserved by another UE in the current time slot and the one or more RB sets.

16. The method of claim 13, wherein the first CPE is in a set of CPEs pre-configured for the current time slot and the priority of the communication in the one or more RB sets.

17. The method of claim 13, wherein selecting the first CPE further includes selecting the first CPE based at least in part on the fact that the expected signal strength for the communication does not meet an energy detection threshold.

18. The method of claim 17, wherein the expected signal strength for the communication is associated with a sidelink reference signal received power measurement.

19. The method of claim 17, wherein not satisfying the energy detection threshold includes being less than the energy detection threshold.

20. The method of claim 13, wherein the size is less than or equal to 16 microseconds.

21. A method for wireless communication performed by a user equipment (UE), the method comprising: At least in part, based on the fact that no transmission or reservation was detected for the current time slot and one or more resource blocks (RBs), a first cyclic prefix extension (CPE) is selected to reduce the gap between the previous time slot when the initiating UE's transmission for Channel Occupied Time (COT) is terminated and the current time slot to the size of sidelink transmissions in the protection shared COT; and An attempt is made to send communication from the current time slot in one or more RB sets using the first CPE.

22. The method of claim 21, further comprising receiving from the initiating UE a COT sharing indication (COT-SI) indicating an offset and duration of the COT, wherein the current time slot is a first time slot following the offset of the UE in the COT.

23. The method of claim 21, wherein the first CPE is in a set of CPEs pre-configured for the current time slot and the priority of the communication in the one or more RB sets.

24. The method of claim 21, wherein the size is less than or equal to 16 microseconds.

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