Systems and methods for signaling in sensing for wireless communication systems
By integrating Sidelink sensing into wireless communication systems, the solution addresses inefficiencies in resource utilization and power consumption, optimizing communication and sensing functions for enhanced system capacity and data rate performance.
Patent Information
- Application Number
- PCT/CN2024/099484
- Authority / Receiving Office
- WO · WO
- Patent Type
- Applications
- Current Assignee / Owner
- Filing Date
- 2024-06-17
- Publication Date
- 2025-07-17
AI Technical Summary
Existing wireless communication systems face challenges in efficiently integrating communication and sensing functions, leading to suboptimal resource utilization and increased power consumption, particularly in proximity services and high data rate requirements.
The integration of Sidelink (SL) sensing into wireless communication systems, allowing UEs to perform sensing operations using shared hardware and spectrum resources, with configurations for monostatic and bistatic sensing modes, and resource pool management for efficient SL sensing and communication.
Enhances system capacity and reduces power consumption by optimizing resource utilization for both communication and sensing tasks, supporting proximity services and high data rate demands.
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Figure CN2024099484_17072025_PF_FP_ABST
Abstract
Description
SYSTEMS AND METHODS FOR SIGNALING IN SENSING FOR WIRELESS COMMUNICATION SYSTEMSTECHNICAL FIELD
[0001] The disclosure relates generally to wireless communications and, more particularly, to signaling for sensing in wireless communication systems.BACKGROUND
[0002] Mobile communication systems can provide increasingly powerful communication capabilities, including wireless sensing. Compared with two independent systems, the integrated design of communication and sensing can reduce costs, reduce power consumption, and optimize resource utilization. Integrated Sensing and Communication (ISAC) achieves unified design of communications and sensing control functions through signal joint design and / or hardware sharing. Sensing in ISAC can be understood as a wireless sensing technology based on mobile communication systems. A mobile communication system can send wireless signals and analyzes the reflected waves or scattered waves of the wireless signals to obtain corresponding sensing measurement data.
[0003] Sidelink (SL) communication refers to wireless radio communication between two or more User Equipments (UEs) . In this type of communications, two or more UEs that are geographically proximate to each other can communicate without being routed to a network (e.g., Base Station (BS) ) or a core network. Data transmissions in SL communications are thus different from typical cellular network communications that include transmitting data to a BS and receiving data from a BS. In SL communications, data is transmitted directly from a source UE to a target UE through, for example the Unified Air Interface (e.g., PC5 interface) without passing through a BS.SUMMARY
[0004] The example arrangements disclosed herein are directed to solving the issues relating to one or more of the problems presented in the prior art, as well as providing additional features that will become readily apparent by reference to the following detailed description when taken in conjunction with the accompany drawings. In accordance with various arrangements, example systems, methods, devices and computer program products are disclosed herein. It is understood, however, that these arrangements are presented by way of example and are not limiting, and it will be apparent to those of ordinary skill in the art who read the present disclosure that various modifications to the disclosed arrangements can be made while remaining within the scope of this disclosure.
[0005] In some arrangements, a first wireless communication device determines configuration for Sidelink (SL) sensing and performs the SL sensing according to the configuration.
[0006] The above and other aspects and their implementations are described in greater detail in the drawings, the descriptions, and the claims.BRIEF DESCRIPTION OF THE DRAWINGS
[0007] Various example arrangements of the present solution are described in detail below with reference to the following figures or drawings. The drawings are provided for purposes of illustration only and merely depict example arrangements of the present solution to facilitate the reader's understanding of the present solution. Therefore, the drawings should not be considered limiting of the breadth, scope, or applicability of the present solution. It should be noted that for clarity and ease of illustration, these drawings are not necessarily drawn to scale.
[0008] FIG. 1A is a diagram illustrating an example wireless communication system, according to various arrangements.
[0009] FIG. 1B is a diagram illustrating a block diagram of an example wireless communication system for transmitting and receiving downlink, uplink, and / or Sidelink (SL) communication signals, according to various arrangements.
[0010] FIG. 2 illustrates an example scenario for SL communications, according to various arrangements.
[0011] FIG. 3 is a diagram illustrating a monostatic sensing mode and a bistatic sensing mode, according to various arrangements.
[0012] FIG. 4 is a diagram illustrating a configuration structure for carrier configuration for UE monostatic sensing, according to various arrangements.
[0013] FIG. 5 is a diagram illustrating a configuration structure for Bandwidth Part (BWP) configuration for UE monostatic sensing, according to various arrangements.
[0014] FIG. 6 is a diagram illustrating a configuration structure for resource pool configuration for UE monostatic sensing, according to various arrangements.
[0015] FIG. 7 is a diagram illustrating a configuration structure for resource pool configuration for UE bistatic sensing, according to various arrangements.
[0016] FIG. 8 is a diagram illustrating a configuration structure for resource pool shared between SL positioning and SL sensing, according to various arrangements.
[0017] FIG. 9 is a diagram illustrating a configuration structure for resource pool shared among SL communication, SL positioning and SL sensing, according to various arrangements.
[0018] FIG. 10 is an example configuration for implicitly indicating a resource pool for UE bistatic sensing or UE monostatic sensing.
[0019] FIG. 11 is a diagram illustrating a configuration structure for resource pool configuration for UE duplex, according to various arrangements.
[0020] FIG. 12 illustrates an example indicator (e.g., sl-A2X-Service) configured in an SL A2X resource pool, according to various arrangements.
[0021] FIG. 13 is a diagram illustrating a configuration structure for a dedicated A2X resource pool for the purpose of A2X communication, A2X positioning or A2X sensing, according to various arrangements.
[0022] FIG. 14 is a diagram illustrating a configuration structure for a dedicated A2X sensing resource pool, according to various arrangements.
[0023] FIG. 15 is a diagram illustrating an example structure for Time-Division Multiplexing (TDM) between SL sensing RS and SL PRS, according to various arrangements.
[0024] FIG. 16 is a diagram illustrating an example structure for comb-based multiplexing between SL sensing RS and SL PRS, according to various arrangements.
[0025] FIG. 17 is diagram illustrating SF-based SL sensing RS resource allocation, according to various arrangements.
[0026] FIG. 18 is a flowchart illustrating an example method for performing SL sensing, according to various arrangements.DETAILED DESCRIPTION
[0027] Various example arrangements of the present solution are described below with reference to the accompanying figures to enable a person of ordinary skill in the art to make and use the present solution. As would be apparent to those of ordinary skill in the art, after reading the present disclosure, various changes or modifications to the examples described herein can be made without departing from the scope of the present solution. Thus, the present solution is not limited to the example arrangements and applications described and illustrated herein. Additionally, the specific order or hierarchy of steps in the methods disclosed herein are merely example approaches. Based upon design preferences, the specific order or hierarchy of steps of the disclosed methods or processes can be re-arranged while remaining within the scope of the present solution. Thus, those of ordinary skill in the art will understand that the methods and techniques disclosed herein present various steps or acts in a sample order, and the present solution is not limited to the specific order or hierarchy presented unless expressly stated otherwise.
[0028] A mobile communication system transmits wireless signals to target areas or objects, and analyzes the received reflected or diffracted wireless signals to obtain corresponding sensing measurement data. Sensing services can be provided to third-party applications. In addition, the mobile communication system can also aggregate the sensing measurement data of other sensing technologies (such as cameras, radars, etc. ) to jointly provide sensing services. In ISAC, communication and sensing utilize the same hardware and spectrum resources. For example, communication signal is used for sensing. Wireless sensing relies on the analysis of the reflected or diffracted wave of the measured object to obtain the sensing measurement data. Target recognition, classification, and detection can be performed using information such as angle of arrival, signal delay, Doppler frequency shift, position, and velocity of those signals.
[0029] In some implementations, sensing models can be divided into mono-static sensing and bi-static sensing. According to the different attributes of the nodes, the sensing models can be further classified into six sensing modes, BS mono-static sensing, BS bi-static sensing, BS as transmitter and UE as receiver, UE as transmitter and BS as receiver, UE bi-static sensing, UE mono-static sensing. Six sensing modes can be combined for single station sensing. Furthermore, sensing services can be extended to the multi-site collaboration, sensing structures, and so on.
[0030] With the advent of wireless multimedia services, users’ demand for high data rate and user experience continue to increase, which sets forth higher requirements on the system capacity and coverage of traditional cellular networks. In addition, public safety, social networking, close-range data sharing, and local advertising have gradually expanded the need for Proximity Services, which allow users to understand and communicate with nearby users or objects. The traditional network-centric cellular networks have limited high data rate capabilities and support for proximity services. In this context, device-to-device (D2D) communications emerge to address the shortcomings of the network-centric models. The application of D2D technology can reduce the burden of cellular networks, reduce battery power consumption of UEs, increase data rate, and improve the robustness of network infrastructure, thus meeting the above-mentioned requirements of high data rate services and proximity services. D2D technology is also referred to as Proximity Services (ProSe) , unilateral / sidechain / SL communication, and so on.
[0031] In some arrangements, wireless communications can be performed on carriers, frequency bands, and / or frequency spectrums. Some carriers are licensed carriers as they are licensed by a government or another authoritative entity to a service provider for exclusive use. Some carriers are unlicensed carriers, which are not licensed by any government or authoritative entities for exclusive use. Two or more service providers may operate in an unlicensed carrier. Currently, UEs may communicate directly with each other (e.g., without doing so using a base station) on the licensed carriers.
[0032] Referring to FIG. 1A, an example wireless communication system 100 is shown. The wireless communication system 100 illustrates a group communication within a cellular network. In a wireless communication system, a network side communication node or a network can include a next Generation Node B (gNB) , an E-UTRAN Node B (also known as Evolved Node B, eNodeB or eNB) , a pico station, a femto station, a Transmission / Reception Point (TRP) , an Access Point (AP) , or so on. A terminal side node or a UE can include a device such as, for example, a mobile device, a smart phone, a cellular phone, a Personal Digital Assistant (PDA) , a tablet, a laptop computer, a wearable device, a vehicle with a vehicular communication system, or so on. In some examples, a UE can be a vehicle UE, a pedestrian UE, a Road-Side UE (RSU) , a Positioning Reference Unit (PRU) , and so on. A UE described herein can implement the methods described herein with or without a known location. In FIG. 1A, a network side and a terminal side communication node are represented by a network 102 and UEs 104a and 104b, respectively. In some arrangements, the network 102 and UEs 104a / 104b are sometimes referred to as “wireless communication node” and “wireless communication device, ” respectively. Such communication nodes / devices can perform wireless communications.
[0033] In the illustrated arrangement of FIG. 1A, the network 102 can define a cell 101 in which the UEs 104a and 104b are located. The UEs 104a and / or 104b can be moving or remain stationary within a coverage of the cell 101. The first UE04a can communicate with the network 102 via a communication channel 103a. Similarly, the first UE04b can communicate with the network 102 via a communication channel 103b. In addition, the UEs 104a and 104b can communicate with each other via a communication channel 105. The communication channels 103a and 104b between a respective UE and the network can be implemented using interfaces such as an Uu interface, which is also known as Universal Mobile Telecommunication System (UMTS) air interface. The communication channel 105 between the UEs is an SL communication channel and can be implemented using a PC5 interface, which is introduced to address high moving speed and high density applications such as, for example, D2D communications, Vehicle-to-Vehicle (V2V) communications, Vehicle-to-Pedestrian (V2P) communications, Vehicle-to-Infrastructure (V2I) communications, Vehicle-to-Network (V2N) communications, or the like. In some instances, vehicle network communications modes can be collective referred to as Vehicle-to-Everything (V2X) communications. The network 102 is connected to Core Network (CN) 108 through an external interface 107, e.g., an Iu interface.
[0034] In some examples, a remote UE (e.g., the first UE04b) that does not directly communicate with the network 102 or the CN 108 (e.g., the communication channel link 103b is not established) communicates indirectly with the network 102 and the CN 108 using the SL communication channel 105 via a relay UE (e.g., the first UE04a) , which can directly communicate with the network 102 and the CN 108 or indirectly communicate with the network 102 and the CN 108 via another relay UE that can directly communicate with the network 102 and the CN 108.
[0035] FIG. 1B illustrates a block diagram of an example wireless communication system for transmitting and receiving downlink, uplink and SL communication signals, in accordance with some arrangements of the present disclosure. In some arrangements, the system can transmit and receive data in a wireless communication environment such as the wireless communication system 100 of FIG. 1A, as described above.
[0036] The system generally includes the network 102 and UEs 104a and 104b, as described in FIG. 1A. The network 102 includes a network transceiver module 110, a network antenna 112, a network memory module 116, a network processor module 114, and a network communication module 118, each module being coupled and interconnected with one another as necessary via a data communication bus 120. The first UE04a includes a UE transceiver module 130a, a UE antenna 132a, a UE memory module 134a, and a UE processor module 136a, each module being coupled and interconnected with one another as necessary via a data communication bus 140a. Similarly, the first UE04b includes a UE transceiver module 130b, a UE antenna 132b, a UE memory module 134b, and a UE processor module 136b, each module being coupled and interconnected with one another as necessary via a data communication bus 140b. The network 102 communicates with the UEs 104a and 104b via one or more of a communication channel 150, which can be any wireless channel or other medium known in the art suitable for transmission of data as described herein.
[0037] The system may further include any number of modules other than the modules shown in FIG. 1B. Those skilled in the art will understand that the various illustrative blocks, modules, circuits, and processing logic described in connection with the arrangements disclosed herein may be implemented in hardware, computer-readable software, firmware, or any practical combination thereof. To clearly illustrate this interchangeability and compatibility of hardware, firmware, and software, various illustrative components, blocks, modules, circuits, and steps are described generally in terms of their functionality. Whether such functionality is implemented as hardware, firmware, or software depends upon the particular application and design constraints imposed on the overall system. Those familiar with the concepts described herein may implement such functionality in a suitable manner for each particular application, but such implementation decisions should not be interpreted as limiting the scope of the present disclosure.
[0038] A wireless transmission from an antenna of one of the UEs 104a and 104b to an antenna of the network 102 is known as an uplink transmission, and a wireless transmission from an antenna of the network 102 to an antenna of one of the UEs 104a and 104b is known as a downlink transmission. In accordance with some arrangements, each of the UE transceiver modules 130a and 130b may be referred to herein as an uplink transceiver, or UE transceiver. The uplink transceiver can include a transmitter and receiver circuitry that are each coupled to the respective antenna 132a and 132b. A duplex switch may alternatively couple the uplink transmitter or receiver to the uplink antenna in time duplex fashion. Similarly, the network transceiver module 110 may be herein referred to as a downlink transceiver, or network transceiver. The downlink transceiver can include RF transmitter and receiver circuitry that are each coupled to the antenna 112. A downlink duplex switch may alternatively couple the downlink transmitter or receiver to the antenna 112 in time duplex fashion. The operations of the transceivers 110 and 130a and 130b are coordinated in time such that the uplink receiver is coupled to the antenna 132a and 132b for reception of transmissions over the wireless communication channel 150 at the same time that the downlink transmitter is coupled to the antenna 112. In some arrangements, the UEs 104a and 104b can use the UE transceivers 130a and 130b through the respective antennas 132a and 132b to communicate with the network 102 via the wireless communication channel 150. The wireless communication channel 150 can be any wireless channel or other medium known in the art suitable for downlink and / or uplink transmission of data as described herein. The UEs 104a and 104b can communicate with each other via a wireless communication channel 170. The wireless communication channel 170 can be any wireless channel or other medium suitable for SL transmission of data as described herein.
[0039] Each of the UE transceiver 130a and 130b and the network transceiver 110 are configured to communicate via the wireless data communication channel 150, and cooperate with a suitably configured antenna arrangement that can support a particular wireless communication protocol and modulation scheme. In some arrangements, the UE transceiver 130a and 130b and the network transceiver 110 are configured to support industry standards such as the Long Term Evolution (LTE) and emerging 5G and 6G standards, or the like. It is understood, however, that the present disclosure is not necessarily limited in application to a particular standard and associated protocols. Rather, the UE transceiver 130a and 130b and the network transceiver 110 may be configured to support alternate, or additional, wireless data communication protocols, including future standards or variations thereof.
[0040] The processor modules 136a and 136b and 114 may be each implemented, or realized, with a general purpose processor, a content addressable memory, a digital signal processor, an application specific integrated circuit, a field programmable gate array, any suitable programmable logic device, discrete gate or transistor logic, discrete hardware components, or any combination thereof, designed to perform the functions described herein. In this manner, a processor may be realized as a microprocessor, a controller, a microcontroller, a state machine, or the like. A processor may also be implemented as a combination of computing devices, e.g., a combination of a digital signal processor and a microprocessor, a plurality of microprocessors, one or more microprocessors in conjunction with a digital signal processor core, or any other such configuration.
[0041] Furthermore, methods and algorithms described in connection with the arrangements disclosed herein may be embodied directly in hardware, in firmware, in a software module executed by processor modules 114 and 136a and 136b, respectively, or in any practical combination thereof. The memory modules 116 and 134a and 134b may be realized as RAM memory, flash memory, ROM memory, EPROM memory, EEPROM memory, registers, a hard disk, a removable disk, a CD-ROM, or any other form of storage medium known in the art. In this regard, the memory modules 116 and 134a and 134b may be coupled to the processor modules 114 and 136a and 136b, respectively, such that the processors modules 114 and 136a and 136b can read information from, and write information to, memory modules 116 and 134a and 134b, respectively. The memory modules 116, 134a, and 134b may also be integrated into their respective processor modules 114, 136a, and 136b. In some arrangements, the memory modules 116, 134a, and 134b may each include a cache memory for storing temporary variables or other intermediate information during execution of instructions to be executed by processor modules 116, 134a, and 134b, respectively. Memory modules 116, 134a, and 134b may also each include non-volatile memory for storing instructions to be executed by the processor modules 114 and 136a and 136b, respectively.
[0042] The network interface 118 generally represents the hardware, software, firmware, processing logic, and / or other components of the network 102 that enable bi-directional communication between network transceiver 110 and other network components and communication nodes configured to communication with the network 102. For example, the network interface 118 may be configured to support internet or WiMAX traffic. In a typical deployment, without limitation, the network interface 118 provides an 802.3 Ethernet interface such that network transceiver 110 can communicate with a conventional Ethernet based computer network. In this manner, the network interface 118 can include a physical interface for connection to the computer network (e.g., Mobile Switching Center (MSC) ) . The terms “configured for” or “configured to” as used herein with respect to a specified operation or function refers to a device, component, circuit, structure, machine, signal, etc. that is physically constructed, programmed, formatted and / or arranged to perform the specified operation or function. The network interface 118 can allow the network 102 to communicate with other network s or core network over a wired or wireless connection.
[0043] In some arrangements, each of the UEs 104a and 104b can operate in a hybrid communication network in which the UE communicates with the network 102, and with other UEs, e.g., between 104a and 104b. As described in further detail below, the UEs 104a and 104b support SL communications with other UE’s as well as downlink / uplink communications between the network 102 and the UEs 104a and 104b. In general, the SL communication allows the UEs 104a and 104b to establish a direct communication link with each other, or with other UEs from different cells, without requiring the network 102 to relay data between UEs.
[0044] FIG. 2 is a diagram illustrating an example system 200 for SL communication, according to various arrangements. As shown in FIG. 2, a network 210 (such as network 102 of FIG. 1A) broadcasts a signal that is received by a first UE 230, a second UE230, and a third UE 240. The UEs 220 and 230 in FIG. 2 are shown as vehicles with vehicular communication networks, while the UE 240 is shown as a mobile device. As shown by the SLs, the UEs 220-240 are able to communicate with each other (e.g., directly transmitting and receiving) via an air interface without forwarding by the base station 210 or the core network 250. This type of V2X communication is referred to as PC5-based V2X communication or V2X SL communication.
[0045] As used herein, when two UEs 104a or 104b are in SL communications with each other via the communication channel 105 / 170, the UE that is transmitting data to the other UE is referred to as the transmission (TX or Tx) UE, and the UE that is receiving said data is referred to as the reception (RX or Rx) UE.
[0046] FIG. 3 is a diagram illustrating a monostatic sensing mode 300a and a bistatic sensing mode 300b, according to various arrangements. In a monostatic sensing mode 300a, a sensing measurement node 305a sends a sensing reference signal 310a (e.g., a sensing RS or an SL sensing RS) toward an environment 330 which is in a transmitting sensing region and the receiving sensing region of the sensing measurement node 305a. The same sensing measurement node 305a receives the reflected, diffracted, or scattered waves or signals (referred to as received signals 320a, referred to as a sensing RS or an SL sensing RS) that correspond to the sensing reference signal 310a, where the sensing reference signal 310a is reflected, diffracted, or scattered by the environment 330 to form the received signals 320a. In this case, the sensing measurement node 305a is both the sender and the receiver of the sensing signals.
[0047] In a bistatic sensing mode 300b, a sensing measurement node 305b sends a sensing reference signal 310b (e.g., a sensing RS or an SL sensing RS) toward the environment 330 which is in a transmitting sensing region. The environment 330 is in the receiving sensing region of a sensing measurement node 306b. The sensing measurement node 306b receives the received signals 320b that corresponding to the transmitted sensing reference signal 310b. The transmitted sensing reference signal 310b is reflected, diffracted, or scattered by the environment to form the received signals 320b. In this case, the sensing measurement node 305b is the sender and the sensing measurement node 306b is the receiver of the sensing signals.
[0048] Each of the sensing measurement node 305a, 305b, and 306b (or a sensing node) can be a BS, a Generation Node B (gNB) , an E-UTRAN Node B (also known as Evolved Node B, eNodeB or eNB) , a pico station, a femto station, a Transmission / Reception Point (TRP) , a Positioning Reference Unit (PRU) , a Sensing Reference Unit (SRU) , an Access Point (AP) , a terminal, a UE, a mobile device, a smart phone, a cellular phone, a Personal Digital Assistant (PDA) , a tablet, a laptop computer, a wearable device, a vehicle with a vehicular communication system, or so on. A sensing node refers to a wireless communication node involved in sensing or ISAC.
[0049] In some arrangements, for UE monostatic sensing (e.g., the monostatic sensing mode 300a) , sensing measurements (e.g., timing related, angle related, velocity related, or location coordination, or a list of location information associated with time stamp) is derived from SL sensing signals received at a UE (e.g., the sensing measurement node 305a) from the UE itself. The SL sensing RS is transmitted by a UE, reflected / scattered / diffracted by sensing target / object or environment (e.g., the environment 330) , and received at the UE.
[0050] As shown in FIG. 3, in a UE monostatic sensing mode, a sensing transmitter that transmits an SL sensing signal (e.g., the sensing reference signal 310a) and a sensing receiver that receives the SL sensing signal (e.g., the received signals 320a) are co-located in the same UE (e.g., the sensing measurement node 305a) . One or more sensing targets (e.g., human shown below) or sensing event (s) such as hazards in the road, collision, etc. in the environment 330 can be detected / tracked / monitored via UE monostatic sensing.
[0051] For UE monostatic sensing, full duplex capability of a UE (e.g., the sensing measurement node 305a) is needed to transmit and receive SL sensing RS in the same time and frequency resource. The SL sensing RS configuration granularity for UE monostatic sensing can be at least one of per UE, per frequency resource (e.g., per band, Bandwidth Part (BWP) ) , per carrier, per SL sensing RS resource pool, per SL sensing RS resource set, per SL sensing RS resource.
[0052] In some arrangements, with regard to the carrier for UE monostatic sensing, a UE can be configured or pre-configured with a list of at least one frequency carrier. One or more of the at least one frequency carrier is dedicated to UE monostatic sensing (e.g., to be used only for UE monostatic sensing) . In some examples, a UE can be configured or pre-configured with two SL carriers, wherein one SL carrier is used for SL communication (e.g., Physical Side Link Control Channel (PSCCH) / Physical Sidelink Shared Channel (PSSCH) / Physical Sidelink Feedback Channel (PSFCH) transmission / reception) or SL positioning (e.g., SL Positioning Reference Signal (PRS) transmission / reception) and another carrier is used for SL sensing (e.g., SL sensing RS transmission / reception) .
[0053] In some arrangements, for resource allocation for UE monostatic sensing, in one carrier used for UE monostatic sensing, a UE can be configured or re-configured with one or more SL BWP with numerology configuration. Within each SL BWP, one or more of dedicated UE monostatic sensing resource pools can be configured or pre-configured.
[0054] In some arrangements, for resource allocation for UE monostatic sensing, in one carrier for UE monostatic sensing, a UE is not configured or re-configured with SL BWP, or the UE is not configured or pre-configured with dedicated UE monostatic sensing resource pools. In some examples, UE is scheduled with or autonomously selects SL sensing RS resource for transmitting the SL sensing RS. In some examples, SL sensing RS resource or SL sensing RS resource set is directly configured to the UE in the carrier.
[0055] FIG. 4 is a diagram illustrating a configuration structure 400 for carrier configuration for UE monostatic sensing, according to various arrangements. A UE can be configured by higher layers with one or more carriers for SL via signaling for one or more of SL, physical layer, Medium Access Control (MAC) , Radio Link Control (RLC) , etc. In some examples, one of the carriers can be used for transmission or reception of SL data such as PSSCH. In some examples, one of the carriers can be used for SL positioning or used for both SL communication and SL positioning, and one of the carriers can be used for transmission or reception of SL sensing RS for UE monostatic sensing.
[0056] With regards to the carrier for UE monostatic sensing, a UE can be provided by higher layers a BWP for SL sensing RS transmission or reception. A UE can be configured by higher layers with one or more SL resource pools for UE monostatic sensing. A SL resource pool for UE monostatic sensing can be used for both transmission and reception of SL sensing RS (e.g., denoted as Rx+Tx pool (s) ) , instead of respectively configuring Tx pool (s) and Rx pool (s) . A SL resource pool for UE monostatic sensing can be associated with either resource allocation mode 1 (e.g., Rx+Tx pools for mode1) or resource allocation mode 2 (e.g., Rx+Tx pools for mode2) .
[0057] With regards to SL BWP for UE monostatic sensing, from a service priority perspective, the network may consider SL sensing only on the basis of satisfying SL communication service requirement. A UE can be configured or pre-configured with a list of SL BWP (s) , wherein one or more of the BWP (s) can be dedicated used for UE monostatic sensing (e.g., to be used only for UE monostatic sensing) .
[0058] In some arrangements, for resource allocation for UE monostatic sensing, in one BWP for UE monostatic sensing, a UE can be configured or re-configured with one or more of dedicated UE monostatic sensing resource pools. In some arrangements, in one BWP for UE monostatic sensing, a UE is not configured or re-configured with one or more dedicated UE monostatic sensing resource pool (s) . In some examples, the UE is scheduled with or autonomously selects SL sensing RS resource for transmitting SL sensing RS. In some examples, SL sensing RS resource or SL sensing RS resource set is directly configured to the UE in the BWP.
[0059] FIG. 5 is a diagram illustrating a configuration structure 500 for BWP configuration for UE monostatic sensing, according to various arrangements. In one carrier, more than one SL BWP can be configured. A UE can be provided by higher layers a BWP for SL sensing RS transmission or reception. A UE can be configured by higher layers with one or more BWPs for SL via signaling for one or more of SL, physical layer, MAC, RLC, etc. One of the BWPs can be used for transmission or reception of SL communication and / or SL positioning (e.g., PSSCH, SL PRS, or both PSSCH and SL PRS) , and one of the BWPs can be used for transmission and / or reception of SL sensing RS for UE monostatic sensing. A UE can be configured by higher layers with one or more SL resource pools for UE monostatic sensing. A SL resource pool for UE monostatic sensing can be used for both transmission and reception of SL sensing RS (e.g., Rx+Tx pool (s) ) , instead of respectively configuring Tx pool (s) and Rx pool (s) . A SL resource pool for UE monostatic sensing can be associated with either resource allocation mode 1 (e.g., Rx+Tx pools for mode1) or resource allocation mode 2 (e.g., Rx+Tx pools for mode2) .
[0060] In some arrangements, dedicated resource pool for UE monostatic sensing can be implemented. For example, a UE can be configured or pre-configured with a list of SL resource pool (s) . One or more of SL resource pool (s) can be dedicated used for UE monostatic sensing. For example, within one SL BWP, a UE can be configured with one or more SL resource pools. Each SL resource pool includes at least one frequency resource. Such one or more SL resource pools include at one or more of: an SL resource pool for SL communication, an SL resource pool for SL positioning, or an SL resource pool dedicated to UE monostatic sensing.
[0061] In some examples, for the configuration of SL resource pool dedicated to UE monostatic sensing, a UE is configured with one or more dedicated UE monostatic sensing Rx and Tx pool (s) . Each SL Rx and Tx pool includes at least one frequency resource used for at least one of transmission of SL sensing RS or reception of SL sensing RS. The UE performs SL sensing RS transmission and SL sensing RS reception using one or more resources in the sensing Rx and Tx pool (s) .
[0062] In some examples, for the configuration of SL resource pool dedicated to UE monostatic sensing, a UE can be configured with one or more dedicated UE monostatic sensing Rx pools and one or more dedicated UE monostatic sensing Tx pools, respectively.
[0063] FIG. 6 is a diagram illustrating a configuration structure 600 for resource pool configuration for UE monostatic sensing, according to various arrangements. A UE can be configured by higher layers one or more SL resource pools for UE monostatic sensing via signaling for one or more of SL, physical layer, MAC, RLC, etc. A SL resource pool for UE monostatic sensing can be used for both transmission and reception of SL sensing RS (e.g., a Rx+Tx pool) , instead of respectively configuring Tx pool (s) and Rx pool (s) . A SL resource pool for UE monostatic sensing can be associated with either resource allocation mode 1 (e.g., Rx+Tx pools for mode1) or resource allocation mode 2 (e.g., Rx+Tx pools for mode2) .
[0064] In some arrangements, a UE can be configured or preconfigured with at least one Tx pool (s) and at least one Rx pool (s) . the Tx pool and Rx pool are associated or paired or grouped. In some examples, a UE can be configured with a pair of Tx pool and Rx pool, e.g., {Tx pool ID 1, Rx pool ID 2} for UE monostatic sensing.
[0065] In some examples, a UE can report UE capability to the network. The network can include at least one of a BS or a Sensing core Network (SF) . In some examples, the UE capability includes at least one of an indication that the UE supports transmitting and receiving SL sensing RS simultaneously, an indication that the UE supports transmitting sensing RS in a dedicated monostatic sensing resource pool (e.g., using Mode 1, Mode 2 sensing, Mode 2 random selection, Mode 2 partial sensing, etc. ) , an indication that the UE supports receiving sensing RS in a dedicated monostatic sensing resource pool, or an indication that the UE supports the combination of SL sensing RS processing capability and transmitting capability. In some examples, the UE capability further includes at least one of a maximum sensing RS bandwidth for both sensing RS transmitting and processing by the UE, a maximum number of sensing RS resources that the UE can transmit and process within a time period, a maximum number of slots with active sensing RS resources that the UE can parallel transmit and process, or a minimum time needed for the UE to process a sensing RS resource after transmitting the sensing RS resource.
[0066] In some arrangements, for UE bistatic sensing, sensing measurements (e.g., timing related, angle related, velocity related, or location coordination, or a list of location information associated with time stamp) is derived from SL sensing signals (e.g., received signals 320b) received at a UE (e.g., sensing measurement node 306b) from another UE (e.g., sensing measurement node 305b) . The SL sensing RS (sensing reference signal 310b) is transmitted by the another UE, reflected / scattered / diffracted by sensing target / object or environment 330, and received at the UE. As shown in FIG. 3, a sensing transmitter (e.g., a first car UE) that transmits an SL sensing signal and a sensing receiver (e.g., a second car UE) that receives the SL sensing signal are not co-located with the first UE (e.g., the first UE and the second UE are different UEs) . One or more sensing targets / objects (e.g., human) , sensing event, or environment can be detected / tracked / monitored via UE bistatic sensing.
[0067] In some examples, for UE bistatic sensing, the full duplex capability of the UE may not be needed. For a “sensing transmitter -sensing target / environment -sensing receiver” procedure, a UE is required to perform only one of transmitting sensing RS or receiving sensing RS. The SL sensing RS configuration granularity for UE bistatic sensing can be at least one of a dedicated bistatic sensing resource pool, a shared positioning and sensing resource pool, a shared resource pool for communication, positioning, and sensing, an SL carrier for UE bistatic sensing, or an SL BWP for UE bistatic sensing.
[0068] In some arrangements, with regard to dedicated resource pool for UE bistatic sensing, a UE can be configured or pre-configured with a list of SL resource pool (s) . One or more of SL resource pool (s) can be dedicated used for UE bistatic sensing. A UE can be configured with one or more dedicated UE bistatic sensing Rx pool (s) and one or more dedicated UE bistatic sensing Tx pool (s) , respectively. For example, within one SL BWP, a UE can be configured with one or more SL resource pools, the SL resource pool includes one or more of an SL resource pool for communication, an SL resource pool for positioning, an SL resource pool dedicated to UE monostatic sensing, or an SL resource pool dedicated to UE bistatic sensing.
[0069] FIG. 7 is a diagram illustrating a configuration structure 700 for resource pool configuration for UE bistatic sensing, according to various arrangements. A UE can be configured by higher layers one or more SL resource pools for UE bistatic sensing via signaling for one or more of SL, physical layer, MAC, RLC, etc. A SL resource pool for UE bistatic sensing can include an SL resource pool for communication, SL resource pool for positioning, SL resource pool dedicated to UE monostatic sensing, or SL resource pool dedicated to UE bistatic sensing. A SL resource pool for UE bistatic sensing can be for either transmission or reception of SL sensing RS. A SL resource pool for UE bistatic sensing can be associated with either resource allocation mode 1 or resource allocation mode 2.
[0070] In some examples, with regard to a shared resource pool for positioning and sensing, to enable UE bistatic sensing, a UE can be configured with one or more dedicated SL PRS resource pool (e.g., a pool initially designed or assigned for SL positioning) , which can be used for sensing. In some examples, SL PRS resource configured in dedicated SL PRS resource pool can be used for sensing purpose. An indicator can be used to indicate that a dedicated SL PRS resource pool can be used for SL PRS for UE bistatic sensing. In an example in which an indicator indicates “sensing” for a resource pool, this resource pool can be used for both positioning and sensing, otherwise, in the example in which no “sensing” indicator exists, this resource pool can be used only for positioning.
[0071] In some examples, an SL PRS is not used for sensing. An SL sensing RS is optionally configured in a dedicated SL PRS resource pool. In some examples, if a dedicated SL PRS resource pool (e.g., SL-PRS-ResourcePool) does not include any SL sensing RS configurations, this resource pool cannot be used for both positioning and sensing.
[0072] FIG. 8 is a diagram illustrating a configuration structure 800 for resource pool shared between SL positioning and SL sensing, according to various arrangements. A dedicated SL PRS resource pool can be used both for SL positioning purposes and SL sensing purposes. In some examples, the SL sensing RS configuration includes SL sensing RS resource, SL sensing RS resource set, SL sensing RS resource ID, SL sensing RS resource set ID, number of symbols, comb size, comb offset, starting symbol, and so on.
[0073] In some arrangements, for shared resource pool for communication, positioning and sensing, to enable UE bistatic sensing, a UE can be configured with one or more resource pools (e.g., SL-ResourcePool) which can be used for communication, positioning, and sensing. In some examples, an SL resource pool (e.g., SL-ResourcePool) can be used for SL bistatic sensing and SL communication, or, SL bistatic sensing, SL communication, and SL positioning, SL communication, or SL communication and SL positioning. In some examples, SL bistatic sensing and SL communication include one or more of PSSCH transmission, PSSCH reception, SL sensing RS transmission, or SL sensing RS reception. In some examples, SL bistatic sensing and SL communication and SL positioning include one or more of PSSCH transmission, PSSCH reception, SL sensing RS transmission, SL sensing RS reception, SL PRS transmission, or SL PRS reception. In some examples, SL communication includes one or more of PSSCH transmission or PSSCH reception. In some examples, SL communication and SL positioning include one or more of PSSCH transmission, PSSCH reception, SL PRS transmission, or SL PRS reception.
[0074] In some examples, the usage of an SL resource pool can be configured for {communication, sensing, positioning} respectively. FIG. 9 is a diagram illustrating a configuration structure 900 for resource pool shared among SL communication, SL positioning and SL sensing, according to various arrangements. In the examples in which {communication, sensing, positioning} for an SL resource pool is defined as {1, 1, 1} , the SL resource pool can be used for all of communication, sensing and positioning. In the examples in which {communication, sensing, positioning} for an SL resource pool is defined as {1, 1, 0} , the SL resource pool can be used for communication and sensing, but not positioning. In other words, a first bit value (e.g., 1) indicates that one of communication, sensing, and positioning corresponding to the bit position is turned on, and a second bit value (e.g., 1) indicates that the one of communication, sensing, and positioning corresponding to the bit position is turned off.
[0075] In some examples in which a resource pool can be used for both SL communication and SL sensing, SL sensing RS configurations can be included in the resource pool. In some examples, SL PRS resource configured in the resource pool can be used for UE bistatic sensing. In some examples in which a resource pool can be used for SL communication, SL sensing, and SL positioning, SL PRS resource configured in the resource pool can be used for both positioning and sensing purpose, and an indicator can be introduced in the resource pool whether SL PRS can be used for UE bistatic sensing. In some examples in which a resource pool can be used for SL communication, SL sensing, and SL positioning, SL sensing RS configurations which dedicated used for UE bistatic sensing can be included in the resource pool.
[0076] With respect to Transport Block Size (TBS) determination, in a resource pool, in the examples in which SL sensing RS is multiplexed with PSSCH in slot, to determine a transmission of a TB, the UE determines a number of Resource Elements (REs) with a slot with the consideration of SL sensing RS in the slot, for example, according to:
[0077] In a resource pool, in the examples in which SL sensing RS is multiplexed with PSSCH and SL PRS in a slot, to determine a transmission of a TB, the UE determines a number of REs with the slot with the consideration of SL sensing RS and SL PRS in the slot, for example, according to:
[0078] In some examples, represents a number symbols used for SL sensing RS in the slot. In some examples, can be determined based on a value configured or pre-configured in the resource pool. In some examples, N′RE is the number of REs within a slot; is the number of subcarriers in a physical resource block; is the number of SL symbols within the slot provided by higher layers; is the number of symbols occupied by PSFCH if any; is the number of symbols used for SL PRS in the slot; is the overhead; is related to the PSSCH DMRS pattern. The Tx UE can ensure that a determined TB size remains unchanged across re-transmission (s) of the Transport Block (TB) .
[0079] With respect to rate matching, in a resource pool, in the examples in which SL sensing RS is multiplexed with PSSCH in a slot, when determining the number of coded modulation symbols generated for 2nd-stage SL Control Information (SCI) transmission, symbols with SL sensing RS are excluded. A number of symbols with SL sensing RS excluded can be determined based on a value configured or pre-configured in the resource pool.
[0080] In some examples, to determine a set of time-domain resources (e.g., slots) that may belong to a resource pool used for UE bistatic sensing, the set of time-domain resources can include time-domain resources (e.g., slots, symbols) that are semi-statically configured as UL as per the higher layer parameter tdd-UL-DL-ConfigurationCommon of the serving cell if provided, sl-TDD-Configuration if provided, or sl-TDD-Config of the received PSBCH if provided. In some examples, to determine a set of time-domain resources (e.g., slots) that may belong to a resource pool used for UE bistatic sensing, the set of time-domain resources can include time-domain resources (e.g., slots, symbols) that are semi-statically configured as Subband non-overlapping Full Duplex (SBFD) resources as indicated per a higher layer parameter of a serving cell. The SBFD resource can be used for UE transmitting UL signals / channels or transmitting SL signals / channels.
[0081] In some examples, a UE can report UE capabilities to the network, the network can either be BS or the SF. In some examples, the UE capabilities include an indication that a UE supports transmitting sensing RS in either a dedicated UE bistatic sensing resource pool, a shared positioning and sensing resource pool, a shared communication and sensing resource pool, or a shared sensing, positioning and communication resource pool, for example, in Mode 1, Mode 2 sensing, Mode 2 random selection, or Mode 2 partial sensing. In some examples, the UE capabilities include an indication that UE supports receiving sensing RS in a dedicated UE bistatic sensing resource pool, a shared positioning and sensing resource pool, a shared communication and sensing resource pool, or a shared sensing, positioning and communication resource pool.
[0082] In some examples, the UE capabilities include an indication that UE supports SL sensing RS processing capability, a maximum sensing RS bandwidth for sensing RS processing, a maximum number of sensing RS resources a UE can process within a time period, a maximum number of slots with active sensing RS resources that a UE can parallel process, or a minimum time needed for a UE to process a sensing RS resource.
[0083] In some arrangements, instead of defining resource pool for UE monostatic sensing and resource pool for UE bistatic sensing respectively, a UE can be configured with one or more of SL sensing resource pools. In some examples, in one SL sensing resource pool, an indicator indicating the usage can be configured for the SL sensing resource pool or for an SL sensing resource. The indicator can indicate that the resource pool or the resource is only for SL sensing RS transmission, only for SL sensing RS reception, for both SL sensing RS transmission and reception.
[0084] In some examples, in one SL sensing resource pool, an indicator indicating the usage can be configured for the SL sensing resource pool or for an SL sensing resource. The indicator can indicate that the resource pool or the resource is for UE bistatic sensing, for UE monostatic sensing, for both UE bistatic sensing and UE monostatic sensing.
[0085] In some example, whether the resource pool can be used for UE bistatic sensing or UE monostatic sensing can be implicitly indicated. In the examples in which resources in the SL sensing resource pool can be used by the UE to perform SL sensing RS transmission, or resources in the SL sensing resource pool can be used by the UE to perform SL sensing RS reception, this SL sensing resource pool is used for UE bistatic sensing. In the examples in which resources in the SL sensing resource pool can be used by the UE to perform SL sensing RS transmission and reception, this SL sensing resource pool is used for UE monostatic sensing. FIG. 10 is an example configuration 1000 for implicitly indicating a resource pool for UE bistatic sensing or UE monostatic sensing.
[0086] In some examples, one SL sensing resource pool can be associated with one or more sensing area (s) or associated with one or more of sensing task / use case. A sensing area can be associated with one ID identifying the sensing area. A sensing task or use case can also be associated with one ID identifying the sensing task or use case. The sensing task or use case can be at least one of object detection and tracking, aerial economy, sea area, road, environment monitoring, motion monitoring, rainfall monitoring, flooding monitoring, human hand gesture, human motion and activities, and so on. For example, an SL sensing resource pool can be configured for a sensing task of detecting sensing targets with low altitude within a velocity range, and another SL sensing resource pool can be configured for the sensing task of human motion monitoring or breathing monitoring.
[0087] In some arrangements, a UE can be configured or pre-configured with one or more SL resource pool for full duplex. In some examples, a UE can be configured or pre-configured with one or more SL BWPs for full duplex. In some example, a UE can be configured or pre-configured with one or more carriers for full duplex. FIG. 11 is a diagram illustrating a configuration structure 1100 for resource pool configuration for UE duplex, according to various arrangements. A UE can perform simultaneous SL transmission and SL reception in the resource (s) configured for full duplex. For example, as shown in FIG. 11, in one BWP, a UE can be configured with one or more SL resource pool (s) for full duplex, one or more of SL resource pool (s) for communication, and one or more of SL resource pool (s) for positioning. The one or more SL resource pool (s) for communication can include one or more Tx pool (s) and / or one or more Rx pool (s) . The one or more SL resource pool (s) for positioning can include one or more Tx pool (s) and / or one or more Rx pool (s) .
[0088] In some examples, a UE can be configured or pre-configured with a usage indicator in an SL resource pool for full duplex, in an SL BWP for full duplex, or in an SL carrier for full duplex. The usage indicator can indicate whether an SL resource pool or an SL resource can be used for sensing, ISAC, communication, and / or positioning. In some examples, the usage indicator can indicate that an SL resource pool or an SL resource can be used for at least one of SL communication only, SL sensing only, UE monostatic sensing, UE bistatic sensing, UE bistatic sensing: transmission only, UE bistatic sensing: reception only, SL positioning only, ISAC (integrated sensing and communication, e.g., SL communication and SL sensing) , SL communication and SL positioning, SL positioning and SL sensing, or SL communication, positioning and sensing.
[0089] In some examples, the usage for an SL resource pool for full duplex or in an SL BWP for full duplex or in an SL carrier for full duplex can be implicitly indicated via configuration or pre-configuration. In some example in which an SL sensing RS resource is configured or pre-configurated, the resource pool / BWP / carrier for full duplex can be used for SL sensing. In the examples in which an SL PRS resource is configured or pre-configurated, the resource pool / BWP / carrier for full duplex can be used for SL positioning. In the examples in which a resource for PSSCH or for PSFCH is configured or pre-configurated, the resource pool / BWP / carrier for full duplex can be used for SL communication.
[0090] In some arrangements, an aerial UE may support A2X communication and / or sensing and / or Air-To-Everything (A2X) ISAC. In some cases, aerial UE as sensing transmitter and / or sensing receiver can be used for sensing UAV or other low-altitude objects (e.g., birds) . A UE can be configured or pre-configured with one or more resource pools dedicated to SL A2X service. FIG. 12 illustrates an example indicator 1200 (e.g., sl-A2X-Service) configured in an SL A2X resource pool, according to various arrangements. The SL A2X service includes at least one of SL communication, Broadcast Remote Identification (BRID) , Detect And Avoid (DAA) , SL positioning, SL sensing, UE monostatic sensing, UE bistatic sensing, sensing and communication, sensing and positioning, sensing and communication and positioning, full duplex.
[0091] FIG. 13 is a diagram illustrating a configuration structure 1300 for a dedicated A2X resource pool for the purpose of A2X communication, A2X positioning or A2X sensing, according to various arrangements. As shown in FIG. 13, for each carrier, a BWP is configured. For each BWP, resource pools can be configured for communication, positioning, and A2X. Resource pools dedicated to A2X service can be configured or pre-configured for either aerial UE communication (e.g., A2X communication) , aerial UE positioning (e.g., A2X positioning) , or aerial UE sensing (e.g., A2X sensing) .
[0092] FIG. 14 is a diagram illustrating a configuration structure 1400 for a dedicated A2X sensing resource pool, according to various arrangements. As shown in FIG. 14, for each carrier, a BWP is configured. For each BWP, resource pools can be configured for communication, positioning, A2X communication, A2X positioning, and A2X sensing. For example, a UE can be configured or pre-configured with one or more resource pools that is dedicated to SL A2X sensing / ISAC / monostatic sensing / bistatic sensing. In some examples, the UE can be configured or pre-configured with one or more resource pools that is dedicated to SL A2X positioning. In some examples, the UE can be configured or pre-configured with one or more resource pools that is dedicated to SL A2X communication. An aerial UE may also use other resource pools (e.g., SL resource pool not dedicated to A2X service, dedicated SL PRS resource pool) for SL sensing.
[0093] In some arrangements, an SCI can be used for the scheduling of SL sensing RS. A Rx UE receives SCI transmitted by Tx UE, where such SCI includes information about Tx UE’s SL sensing RS configurations (e.g., SL sensing RS resource ID, number of symbols, comb size, periodicity) and characteristics (e.g., priority) . In some examples, SL sensing RS and other SL RS (e.g., SL PRS used for SL positioning) can be jointly processed for improving sensing quality and accuracy. An SCI can be used for the scheduling of both SL sensing RS and / or another type of SL RS. Whether SL sensing RS and the another type of SL RS can be jointly used for sensing can be configured or pre-configured in an SL resource pool, or can be requested via higher layer parameter from UE, SF, or Location Management Function (LMF) .
[0094] In some examples, to enable the SL sensing RS and other SL RS joint processing, for the Rx UE the joint processing information is configured or preconfigured in a SL resource pool for sensing. SF / LMF / UE can first request a BS to configure joint SL RS configuration. An UE receiving the configuration of resource pool can obtain such information. The SF / LMF (core network) request a first UE to perform joint processing. A second UE (e.g., server UE) requests the first UE to perform joint processing. A UE receives the SCI which indicates the joint information, and joint processing more than one SL RS.
[0095] In some examples, for the Tx UE, the joint processing information is configured or preconfigured in a SL resource pool for sensing. The SF / LMF / UE can first request a BS to configure joint SL RS configuration) . A UE receiving the configuration of resource pool can obtain the information to transmit. The SF / LMF (core network) requests a first UE to transmit more than one types of SL RS for sensing. A second UE (e.g., server UE) requests the first UE to transmit more than one types of SL RS for sensing. A UE receives SCI which indicate the joint information, and joint processing more than more SL RS.
[0096] The joint processing information can be conveyed in both higher layer signaling (e.g., signaling between SF and UE, RRC) and lower layer signaling (e.g., DCI, SCI) , only higher layer signaling, or only lower layer signaling
[0097] In a measurement report of the Rx UE, one or more of the following information can be reported to a UE or SF or LMF: one or more of SL sensing RS resource ID, one or more of SL PRS resource ID, or an indicator indicating whether SL sensing RS and another type of SL RS (e.g., SL PRS, SL Demodulation Reference Signal (DMRS) , SL CSI-RS) are grouped for joint processing by the Rx UE.
[0098] In some examples, SCI schedules an SL sensing RS and an SL PRS. In some examples, a UE can be configured via higher layer parameter (s) with the association information or grouping information between SL sensing RS and another type of SL RS (e.g., SL PRS) . Specifically, a UE can be configured with one or a list of {association / group ID, SL sensing RS resource ID, SL PRS resource ID} . The association / group ID can be included in SCI for triggering Rx UE joint processing two types of SL RS (s) that have the same association / group ID.
[0099] In some examples, there is no explicit association information configured via higher layer parameter, and a one-to-one mapping relationship between SL PRS resource and SL sensing RS resource can be specified or predefined. In such case, only a one-bit indicator in SCI is needed for indicating whether SL PRS resource and SL sensing RS resource are associated / grouped. For example, by default, SL sensing RS resource ID is combined with an SL PRS resource with the same identity (e.g., SL sensing RS resource 1 is grouped with SL PRS resource 1) , based on the predefined one-to-one mapping. In some examples, the SCI can include either SL PRS scheduling information and the one-bit indicator indicating SL sensing RS is also grouped. In some examples, the SCI can include SL sensing RS scheduling information and the one-bit indicating whether SL PRS can be used for sensing purpose.
[0100] In some examples, a UE can be configured with the association information between a PSCCH resource and an SL sensing RS resource. In some examples, there are one-to-one mapping relationships between PSCCH and SL sensing RS. In the examples in which an SL sensing RS resource is configured in a dedicated SL PRS resource pool, and that one-to-one mapping relationships between PSCCHs and SL PRSs exist, then the SCI can include an indicator indicating whether both the SL sensing RS and the SL PRS are scheduled in a same time-domain resource (e.g., a slot) . In some examples, according to the other fields (e.g., SL PRS resource ID field or SL sensing RS resource ID field) in SCI, the Rx UE can determine either SL PRS or SL sensing RS is scheduled.
[0101] In some examples, there are one to multiple mapping relationships between PSCCH and SL sensing RS. The SCI can include the SL sensing RS ID for a current slot and / or for future slots respectively. A bit payload in SCI for a current slot has a SL sensing RS resource ID that is related (e.g., mapped) to a number of SL sensing RS resources associated with one resource for SCI. In some examples, there are one-to-one mapping relationships between PSCCH and SL sensing RS or between PSCCH and SL PRS. The association in {PSCCH resource, SL RS resource} can be specified. The SL RS resource can be either an SL PRS resource or an SL sensing RS resource.
[0102] In some examples, the SCI indicating SL sensing RS and SL DMRS can be jointly used for sensing. In some examples, the SCI can include one indicator indicating whether SL sensing RS and SL DMRS can be jointly used for sensing. In some examples, the SCI can include one indicator indicating whether an SL sensing RS share the same antenna port or the same beam with an SL DMRS.
[0103] In some examples, the SCI indicating SL sensing RS and SL PT-RS can be jointly used for sensing. In some examples, the SCI can include one indicator indicating whether SL sensing RS and SL Phase Tracking Reference Signal (PT-RS) can be jointly used for sensing. In some examples, the SCI can include one indicator indicating whether an SL sensing RS share the same antenna port or the same beam with an SL PT-RS.
[0104] In some examples, the SCI indicating SL sensing RS and SL CSI-RS can be jointly used for sensing. In some examples, the SCI can include one indicator indicating whether SL sensing RS and SL CSI-RS can be jointly used for sensing. In some examples, the SCI can include one indicator indicating whether SL sensing RS share the same antenna port or the same beam with SL CSI-RS.
[0105] In some examples, the SCI can include an SCI format dedicated to scheduling of SL sensing RS. For example, the reserved bits for SCI 1-B can be used, e.g., repurposing or reusing some of the fields of SCI 1-B to indicate various aspects of scheduling the SL sensing RS. In some examples, a 2nd stage SCI, e.g., the “2nd-stage SCI format” field in SCI 1-A can be extended to indicate various aspects of scheduling the SL sensing RS. In some examples, the SCI 2-D can be repurposed or reused to indicate various aspects of scheduling the SL sensing RS.
[0106] In some examples, at least one of the following types of information can be transmitted by or included in an SCI: priority; source ID (24 bits or N bits up to resource pool configuration) ; destination ID (24 bits or N bits up to resource pool configuration) ; cast type indicator; resource reservation period; time resource assignment; sensing RS resource ID indication (which can include sensing RS resource ID for current slot, and for future slot respectively) ; an indicator indicating whether sensing RS is scheduled; association / group ID; sensing RS request or requested sensing RS transmission characteristics; 1 bit indicating whether SL PRS can be used for sensing purpose; SL PRS resource; one indicator indicating whether SL sensing RS and SL DMRS / SL PT-RS / SL CSI-RS / SL PRS can be jointly used for sensing; or one indicator indicating whether SL sensing RS share the same antenna port or the same beam with SL DMRS / SL PT-RS / SL CSI-RS / SL PRS.
[0107] In some arrangements, a SL sensing RS resource can be associated with or mapped to at least one parameter including one or more of SL sensing RS resource ID, SL sensing RS periodicity, SL sensing RS comb size, SL sensing RS comb offset, SL sensing RS starting symbol, SL sensing RS number of symbols, or SL sensing RS bandwidth. In some examples, the granularity of the bandwidth configuration can be either a Physical Resource Block (PRB) or a PRB set. A PRB set includes one or more PRBs.
[0108] In some examples, an SL sensing RS may reuse SL PRS, e.g., SL PRS can be configured or scheduled with different purposes / usages, SL PRS can be used for SL positioning only, or be used for both SL sensing and SL positioning.
[0109] FIG. 15 is a diagram illustrating an example structure 1500 for Time-Division Multiplexing (TDM) between SL sensing RS and SL PRS, according to various arrangements. An SL sensing RS can be multiplexed with other signals / channels. In some examples, TDM-based multiplexing between SL sensing RS and SL PRS can be supported in a time-domain resource (e.g., slot) . The SL sensing RS and SL PRS can be transmitted by different UEs, or the SL sensing RS and SL PRS can be transmitted by the same UE in a time-domain resource (e.g., a slot) . SL sensing RS resource is preceded by an Automatic Gain Control (AGC) symbol and / or a gap symbol.
[0110] FIG. 16 is a diagram illustrating an example structure 1600 for comb-based multiplexing between SL sensing RS and SL PRS, according to various arrangements. In some examples, comb-based multiplexing between SL sensing RS and SL PRS can be supported in a time-domain resource (e.g., slot) . The SL sensing RS and SL PRS can be transmitted by different UEs, or the SL sensing RS and SL PRS can be transmitted by the same UE in a time-domain resource (e.g., slot) . SL sensing RS resource is preceded by an AGC symbol and / or a gap symbol.
[0111] In the examples in which a resource pool is designed for multiple usage, e.g., sensing and positioning / communication, gap period is provided between SL sensing RS symbol and an adjacent other signals / channels. In the example in which a UE can transmit and receive SL sensing RS for UE monostatic sensing and transmit other SL signals / channels, a gap period is provide for Tx-Rx switching, e.g., a gap period is provided between the transmitting and the receiving.
[0112] In some arrangements, in network controlling resource allocation, for SL sensing RS transmission, dynamic grant and / or configured grant are supported. The configured grant can be either pure higher layer signaling or both higher layer signaling and lower layer triggering. For SL sensing, for network controlling resource allocation, a UE can be configured or pre-configured with one or a list of SL sensing RS configurations via higher layer signaling from network. The configuration can be SL sensing RS resource pool configuration or be the SL sensing RS resource configuration. For SL sensing, for network controlling resource allocation, a UE can be triggered via lower layer signaling to transmit SL sensing RS based on higher layer configuration. The lower layer signaling can be in MAC layer or in physical layer (e.g., Downlink Control Information (DCI) ) .
[0113] Based on different designs for SL sensing RS configured in higher layer, the lower layer triggering signaling (e.g., DCI) from network can include repurposing or reusing DCI format 3-2, repurposing or reusing DCI format 3-0, or a new lower layer triggering signal such as new DCI format (e.g., DCI format 3-3) .
[0114] The new DCI format (e.g., DCI format 3-3) is a new lower layer triggering signaling. A new RNTI can be configured to UE for the new DCI format. To how to search for PDCCH candidates, a UE can be configured by network on whether one or more of the following DCI formats are to be monitored: new DCI format (e.g., DCI format 3-3) , DCI 3_2 and DCI 3_3, DCI 3_0 and DCI 3_3, DCI 3_1 and DCI 3_3, DCI 3_0 and DCI 3_2 and DCI 3_3, DCI 3_0 and DCI 3_1 and DCI 3_3, DCI 3_1 and DCI 3_2 and DCI 3_3, DCI 3_0 and DCI 3_1 and DCI 3_2 and DCI 3_3. In some examples, the existing signaling can be repurposed, for example, if the UE is configured with dedicated SL sensing resource pool and the UE is configured to monitor one DCI format X, naturally the UE monitor for both DCI format X and DCI for SL sensing.
[0115] In some examples, the DCI includes at least one of the following information for SL sensing: an indicator indicating whether sensing RS is scheduled; a resource pool ID (e.g., dedicated sensing (monostatic / bistatic) resource pool ID, or shared pool ID, SL duplex resource pool ID) ; a time gap from DCI to the first scheduled sensing RS; at least one SL sensing RS resource ID; SCI fields; a configuration ID (e.g., a Configured Grant (CG) index) ; an activation or deactivation of CG type2 (e.g., via an explicitly indication or an implicitly indication) ; an association / group ID; a sensing RS request or requested sensing RS transmission characteristics; 1 bit indicating whether SL PRS can be used for sensing purpose; an SL PRS resource; one indicator indicating whether SL sensing RS and SL DMRS / SL PT-RS / SL CSI-RS / SL PRS can be jointly used for sensing; or one indicator indicating whether SL sensing RS share the same antenna port or the same beam with SL DMRS / SL PT-RS / SL CSI-RS / SL PRS.
[0116] In some examples, a UE can be configured with one or more CGs for SL sensing. The CG configuration information can include at least one of a CG index, CG periodicity, slot offset, a System Frame Number (SFN) , sensing resource pool index, sensing RS resource ID, time resource (e.g., slot) , maximum transmission number of SL sensing RS, or priority for SL sensing. In some examples, a UE can be configured with one or more CG for both SL sensing and SL positioning. For example, the CG configuration information for SL positioning in a dedicated SL PRS resource pool can be shared with SL sensing. In some examples, a UE can be configured with one or more CGs, each of which is associated with a CG index and a periodicity. Other types of information are carried / scheduled by DCI.
[0117] In some examples in which a UE determines a sensing Quality of Service (QoS) , the UE can directly send SL sensing RS related request to the network for resource allocation. In some examples in which a UE lacks knowledge on a sensing QoS, then one or more of UE-UE signaling or SF-UE signaling can be supported before the UE requests resource allocation from the network. In some examples, in UE-UE signaling, a UE can be provided with the sensing QoS information from another UE. In SF-UE signaling, a UE can be provided with the sensing QoS information from the core network.
[0118] In some examples, the sensing QoS information includes at least one of sensing priority, sensing use case, sensing delay budget, sensing area, sensing RS periodicity, response time, timing accuracy requirement, velocity accuracy requirement, or angle accuracy requirement. In some examples in which the UE has an SL sensing RS to transmit, the UE can send a higher layer signaling to network, the higher layer signaling can include at least some of the sensing QoS information. The UE can send a higher layer signaling to network for CG resources for SL sensing, the higher layer signaling can include at least some of the sensing QoS information. The UE can send a MAC Control Element (CE) to the network for request Dynamic Grant (DG) resource allocation, the request can include at least some of the sensing QoS information. Network determines whether UE can use networking controlling resource allocation or UE autonomous sensing RS resource allocation, and indicate the same to the UE via higher layer signaling. The network can contain CG configuration and / or contain DG Radio Network Temporary Identifier (RNTI) in higher layer signaling. In response to successfully receiving DG DCI, the UE sends UL confirmation MAC CE to network.
[0119] In some arrangements, signaling interactions can be used for network controlling SL sensing RS resource allocation. In some examples, the UE sends UL Radio Resource Control (RRC) message Sidelink UE Information (SUI) (e.g., SidelinkUEInformationNR, including SL-ISAC-info) as the UE has sensing RS to transmit. In some examples, the SL-ISAC-info includes at least one of sensing priority, sensing delay budget, or sensing area. In some examples, the UE sends UL RRC message UE Assistance Information (UAI) (e.g., UEAssistanceInformation, including sl-ISAC-UE-AssistanceInformation) to request a CG for sensing. In some examples, sl-ISAC-UE-AssistanceInformation includes at least one of sensing RS periodicity, sensing RS priority, sensing RS delay budget, sensing RS bandwidth, sensing area, or sensing RS Tx beam. In some examples, the UE can send UL MAC CE to request a DG for sensing. The MAC CE can include at least one of sensing RS periodicity, sensing RS priority, sensing RS delay budget, or sensing RS bandwidth. In some examples, the network determines whether the UE is to use mode 1 or mode 2, via DL RRC message ScheduledConfig (mode 1) or SelectedConfig (mode 2) . In some examples, the network can contain CG config and / or contain DG RNTI in DL RRC message ScheduledConfig. In response to successfully receiving the DG DCI, the UE sends UL confirmation MAC CE to network.
[0120] In some arrangements, SF / LMF can determine network controlling resource allocation given that SF / LMF has access to the sensing QoS information and sensing service requirement. SF can interact with a UE in order to deliver assistance data or to obtain a location / velocity / tracking estimate or sensing measurements. Moreover, the SF can determine the sensing modes based on UE sensing capabilities.
[0121] FIG. 17 is diagram illustrating SF-based SL sensing RS resource allocation 1700, according to various arrangements. For a UE SL sensing architecture, the SF can also be part of SL sensing to manage the support of different sensing services. In the examples in which UEs in one sensing session have more than one serving BS / TRPs, SF can interact with multiple BS / TRPs for assistance data information, the capability, sensing measurement information. Moreover, multi-static sensing can be supported to further improve sensing accuracy by combining measurements derived on multiple sensing modes (e.g., UE bistatic sensing, UE monostatic sensing, TRP bistatic sensing, TRP monostatic sensing, UE-TRP sensing, TRP-UE sensing) . The assistance data sent from SF to UE can include both DL sensing RS related information and SL sensing RS related information.
[0122] In some examples, the SF to coordinate sensing RS configuration of different BS / TRPs via signaling interactions. In some examples, the SF sends a request message to trigger each BS / TRP to provide the sensing RS configuration for scheme 1 UE. Each BS / TRP provides the response message to SF containing the configured sensing RS configuration of each scheme 1 UE. The SF resolves the interference by SF’s implementation. For example SF deletes some of the overlapping sensing RS resources of some of the BS / TRPs. SF provides the non-overlapped sensing RS configuration to mode 1 UEs. The SF sends the feedback (e.g., collected all BS / TRPs’ sensing RS configuration, or preferred / non-preferred resources) to each BS / TRP, and each BS / TRP distributes the modified sensing RS configuration to each scheme 1 UE.
[0123] In some examples, the SF requests or instructs BSs / TRPs to coordinate with each other via signaling interactions. For example, the SF sends a request message to BS / TRP (s) to request BS / TRP (s) to coordinate sensing RS configuration with other BS / TRP (s) . A BS / TRP sets up Xn interface with at least one another BS / TRP as requested by the SF, and the BS / TRP sends its own sensing RS configuration to the at least one another BS / TRP via Xn interface. After receiving one BS / TRP’s sensing RS configuration, the other BS / TRP (s) can configure non-overlapped sensing RS configuration. In some examples, the sensing RS configuration includes at least one of a UE ID, UE SL sensing RS resource, SL sensing RS resource pool ID, SL sensing RS resource ID, SL sensing RS periodicity, SL sensing RS comb size, SL sensing RS comb offset, SL sensing RS starting symbol, SL sensing RS number of symbols, or SL sensing RS bandwidth.
[0124] In some arrangements, a UE can autonomous allocation sensing RS resources. For example, the sensing RS can be triggered via a higher layer or a physical layer to improve the sensing accuracy, and to mitigate the error caused by sensing nodes that are not accurately synchronized. For triggering of SL sensing RS, in some examples, a UE can be triggered by other sensing node via either higher layer signaling or lower layer signaling to transmit SL sensing RS. For triggering of SL sensing RS, in some examples, a UE can be triggered to transmit SL sensing RS via UE’s own higher layer, or the UE can be triggered to transmit SL sensing RS by SF.
[0125] In some examples, the UE can be triggered via lower layer signaling. For example, the SCI can include 1 bit indicating whether the UE receiving this SCI is requested to transmit SL sensing RS. For example, the SCI can include the detailed SL sensing RS transmission requirement, e.g., SL sensing RS bandwidth. The UE receiving lower layer signaling triggering can transmit SL sensing RS based on the received SL sensing RS.
[0126] In some examples, the UE can be triggered by higher layer signaling. A UE can be triggered via higher layer signaling from server or another UE. The triggered information include at least one of: sensing RS periodicity, sensing RS priority, sensing RS delay budget, sensing RS bandwidth, sensing area, sensing RS Tx beam, start time. If the start time does not exist or is not implemented, the UE is triggered to transmit SL sensing RS.
[0127] In some examples, the UE can be triggered by both higher layer signaling and lower signaling. For example, a UE receive a QoS requirement information via higher layer signaling and wait to transmit SL sensing RS. The UE is triggered to transmit after receiving lower layer signaling.
[0128] In some examples, to enhance sensing-selection procedure (e.g., exclusion, priority) , in a sensing window, if a UE support full duplex, the UE senses all the resources in the sensing window. There is no need to exclude those time slots wherein the UE transmit.
[0129] FIG. 18 is a flowchart illustrating an example method 1800 for performing SL sensing, according to various arrangements. At 1810, a first UE (e.g., a wireless communication device, node, etc. ) determines the configuration for SL sensing. At 1820, the first UE performs the SL sensing according to the configuration. In some examples, the first UE receives the configuration from an SF or BS. In some examples, the first UE determines the content of SCI to transmit SL sensing RS. In some examples, the first UE receives the SCI sent from another UE (e.g., a second UE) and receives the SL sensing RS. In some examples, the first UE receives DCI sent from the BS. In some examples, the first UE receives CG config from BS via RRC. In some examples, the first UE is a Tx UE (e.g., a Tx sensing node) . In some examples, the first UE is an Rx UE (e.g., an Rx sensing node) . In some examples, the first UE is both the Tx UE and the Rx UE.
[0130] In some examples, the SL sensing is performed in a monostatic sensing mode. The configuration includes SL sensing RS configuration. The SL sensing RS configuration is configured for at least one of each UE, for each frequency resource (e.g., per band, per BWP) , for each carrier, for each SL sensing RS resource pool, for each SL sensing RS resource set, or for each SL sensing RS resource.
[0131] In some examples, the SL sensing is performed in a monostatic sensing mode. The configuration includes a list of at least one frequency carrier. One or more of the list of at least one frequency carrier is dedicated to the monostatic sensing mode.
[0132] In some examples, the SL sensing is performed in a monostatic sensing mode. The configuration includes a list of at least one BWP. One or more of the list of at least one BWP is dedicated to the monostatic sensing mode.
[0133] In some examples, the SL sensing is performed in a monostatic sensing mode. The configuration includes a list of at least one SL resource pool. One or more of the list of at least one SL resource pool is dedicated to the monostatic sensing mode. In some examples, the SL sensing is performed in a monostatic sensing mode. For a BWP used for SL, the configuration includes one or more SL resource pools including one or more of an SL resource pool for SL communication, an SL resource pool for SL positioning, or an SL resource pool dedicated to the monostatic sensing mode.
[0134] In some examples, the SL sensing is performed in a monostatic sensing mode. The configuration includes one or more Rx and Tx SL resource pools dedicated to the monostatic sensing mode. Performing the SL sensing according to the configuration includes transmitting a first SL sensing RS or receiving a second SL sensing RS using one or more resource in the one or more Rx and Tx SL resource pools.
[0135] In some examples, the first UE report to a network capability of the first UE. The capability includes an indication that the first UE supports a combination of SL sensing RS processing and SL sensing RS transmitting. The network includes at least one of a base station or a SF. In some examples, the capability further includes at least one of a maximum sensing RS bandwidth for both sensing RS transmitting and processing by the first UE, a maximum number of sensing RS resources capable of being transmitted and processed by the first UE within a time period, a maximum number of slots with active sensing RS resources that the first UE is capable of transmitting and processing in parallel, or a minimum time needed for the first wireless communication to process a sensing RS resource after transmitting using a sensing RS resource.
[0136] In some examples, the SL sensing is performed in a bistatic sensing mode. The configuration includes SL sensing RS configuration. The SL sensing RS configuration is configured for at least one of a dedicated bistatic sensing resource pool, a shared positioning and sensing resource pool, a shared resource pool for communication, positioning, and sensing, an SL carrier for bistatic sensing, or an SL BWP for bistatic sensing.
[0137] In some examples, the SL sensing is performed in a bistatic sensing mode. The configuration includes a list of at least one SL resource pool. One or more of the list of at least one SL resource pool is dedicated to the bistatic sensing mode.
[0138] In some examples, the SL sensing is performed in a bistatic sensing mode. The configuration includes at least one SL resource pool dedicated to Rx in the bistatic sensing mode or at least one SL resource pool dedicated to Tx in the bistatic sensing mode.
[0139] In some examples, the SL sensing is performed in a bistatic sensing mode. The configuration includes one or more dedicated SL PRS resource pools, wherein the one or more dedicated SL PRS resource pools is configured to be used for SL positioning. An indicator can indicate one of the one or more dedicated SL PRS resource pools is capable of being used for the SL sensing.
[0140] In some examples, the configuration includes configuring an SL sensing RS in a dedicated SL PRS resource pool. The dedicated SL PRS resource pool does not include an SL sensing RS configuration. The dedicated SL PRS resource pool is not used for both positioning and sensing.
[0141] In some examples, the configuration includes an SL resource pool configured for SL bistatic sensing and SL communication or SL bistatic sensing, SL communication, and SL positioning.
[0142] In some examples, the configuration includes a usage of an SL resource pool includes one or more of communication, sensing, and positioning.
[0143] In some examples, the configuration includes a resource pool, an SL sensing RS is multiplexed with a PSSCH in time-domain resource (e.g., a slot) in the resource pool, a number of frequency-domain resources is determined based on least in part of the SL sensing RS in the time-domain resource.
[0144] In some examples, the first UE determines a set of time-domain resources of a resource pool used in a bistatic sensing mode, wherein the set of time-domain resources includes semi-statically SBFD resources indicated by a higher layer of a serving cell, wherein the SBFD resources are configured to be used for the first UE transmitting uplink signals or channels or transmitting SL signals or channels.
[0145] In some examples, the configuration includes an indicator indicating a usage for an SL sensing resource pool or for an SL sensing resource;
[0146] the indicator indicates that the SL sensing resource pool or the SL sensing resource is only for SL sensing RS transmission, only for SL sensing RS reception, for both the SL sensing transmission RS and the SL sensing RS reception.
[0147] In some examples, the configuration includes an indicator indicating a usage for an SL sensing resource pool or for an SL sensing resource. The indicator indicates that SL sensing resource pool or the SL sensing resource is used for bistatic sensing mode, for monostatic sensing mode, for both the bistatic sensing mode and the monostatic sensing mode.
[0148] In some examples, the configuration includes that an SL sensing resource pool or for an SL sensing resource configured to be used for transmitting SL sensing RS is also used for bistatic sensing or monostatic sensing.
[0149] In some examples, the configuration includes that an SL sensing resource pool or for an SL sensing resource configured to be used for at least one of one or more sensing areas, one or more sensing tasks, or one or more use cases.
[0150] In some examples, the configuration includes a usage indicator in an SL resource pool for full duplex, in an SL BWP for full duplex, or in an SL carrier for full duplex. The usage indicator can indicate whether an SL resource pool or an SL resource is capable of being used for at least one of sensing, ISAC, communication, or positioning.
[0151] In some examples, the configuration includes an indicator indicating that one or more resource pools dedicated to SL A2X service. The indicator indicates that the one or more resource pools dedicated to A2X service is capable of being used for at least one of SL sensing, monostatic sensing, bistatic sensing, sensing and communication, sensing and positioning, sensing and communication and positioning, or full duplex.
[0152] In some examples, the configuration includes one or more resource pools dedicated to at least one of SL A2X sensing, ISAC, monostatic sensing, or bistatic sensing.
[0153] In some examples, the configuration includes an SL SCI used for scheduling both an SL sensing RS and another type of SL RS. The SL sensing RS and the another type of SL RS are configured to be jointly used for the SL sensing for an SL resource pool.
[0154] In some examples, the configuration includes an SL SCI used for scheduling both an SL sensing RS and another type of SL RS. The SCI includes an association ID or group ID identifying the SL sensing RS and the another type of SL RS. The first UE jointly processes the SL sensing RS and the another type of SL RS having the same association ID or group ID.
[0155] In some examples, the configuration includes an SL SCI having a one-bit indicator indicating whether a resource for SL PRS and a resource for SL sensing RS are associated or grouped.
[0156] In some examples, the configuration includes an SL SCI including an ID of an SL sensing RS for a time-domain resource. A bit payload for the time-domain resource having an ID of an SL sensing RS resource mapped to a number of SL sensing RS resources associated with a resource for SCI.
[0157] In some examples, the configuration includes an SL PRS configured for both the SL sensing and SL positioning, wherein the SL sensing is performed using the SL PRS.
[0158] In some examples, the configuration includes TDM-based multiplexing an SL sensing RS and an SL PRS in a time-domain resource.
[0159] In some examples, the configuration includes comb-based multiplexing an SL sensing RS and an SL PRS in a time-domain resource.
[0160] In some examples, the configuration includes a DCI including at least one of an indicator indicating whether sensing RS is scheduled, a resource pool ID for a resource pool, a time gap from the DCI to a first scheduled sensing RS, at least one SL sensing RS resource ID, SL SCI fields, a CG index, an activation or deactivation of CG type2, an association / group ID, a sensing RS request or requested sensing RS transmission characteristics, 1 bit indicating whether SL PRS can be used for the SL sensing, an SL PRS resource, one indicator indicating whether SL sensing RS and another type of SL RS are jointly used for sensing, or one indicator indicating whether SL sensing RS share a same antenna port or a same beam with the another type of SL RS.
[0161] In some examples, the configuration includes one or more CGs for the SL sensing. The one or more CGs are defined by at least one of a CG index, a CG periodicity, a slot offset, a SFN, a sensing resource pool index, a sensing RS resource ID, a time resource, a maximum transmission number of an SL sensing RS, or a priority for the SL sensing.
[0162] In some examples, the first UE lacks knowledge of sensing QoS information, and the configuration includes one or more of UE-UE signaling or SF-UE signaling before the first UE requests resource allocation from a network.
[0163] In some examples, the configuration is determined based on sensing QoS information. The sensing QoS information includes at least one of sensing priority, sensing use case, sensing delay budget, sensing area, sensing RS periodicity, response time, timing accuracy requirement, velocity accuracy requirement, or angle accuracy requirement.
[0164] In some examples, the first UE sends to a network (e.g., BS) first higher layer signaling including sensing QoS information, the first UE to transmit an SL sensing RS. In some examples, the first UE sends to a network second higher layer signaling requesting CG resources for the SL sensing, the second higher layer signaling includes the sensing QoS information. In some examples, the UE sends to a network a MAC CE requesting DG resource allocation, the MAC CE includes the sensing QoS information. In some examples, the UE receives from the network a configuration on whether the first UE is to use the networking controlling resource allocation or the autonomous sensing RS resource allocation. In some examples, the UE sends to a network in response to successfully receiving DG DCI, a confirmation MAC CE.
[0165] In some examples, a SF coordinate sensing RS configurations of different base stations or TRPs.
[0166] In some examples, a SF requests different base stations or TRPs to coordinate with each other for determining sensing RS configurations.
[0167] In some examples, the first UE sends an SL sensing RS by the first sensing node in response to at least one of signaling from a sensing node via higher layer signaling or lower layer signaling, trigger by higher layer of the fist UE, or trigger by a SF.
[0168] While various arrangements of the present solution have been described above, it should be understood that they have been presented by way of example only, and not by way of limitation. Likewise, the various diagrams may depict an example architectural or configuration, which are provided to enable persons of ordinary skill in the art to understand example features and functions of the present solution. Such persons would understand, however, that the solution is not restricted to the illustrated example architectures or configurations, but can be implemented using a variety of alternative architectures and configurations. Additionally, as would be understood by persons of ordinary skill in the art, one or more features of some arrangements can be combined with one or more features of another arrangement described herein. Thus, the breadth and scope of the present disclosure should not be limited by any of the above-described illustrative arrangements.
[0169] It is also understood that any reference to an element herein using a designation such as “first, ” “second, ” and so forth does not generally limit the quantity or order of those elements. Rather, these designations can be used herein as a convenient means of distinguishing between two or more elements or instances of an element. Thus, a reference to first and second elements does not mean that only two elements can be employed, or that the first element must precede the second element in some manner.
[0170] Additionally, a person having ordinary skill in the art would understand that information and signals can be represented using any of a variety of different technologies and techniques. For example, data, instructions, commands, information, signals, bits and symbols, for example, which may be referenced in the above description can be represented by voltages, currents, electromagnetic waves, magnetic fields or particles, optical fields or particles, or any combination thereof.
[0171] A person of ordinary skill in the art would further appreciate that any of the various illustrative logical blocks, modules, processors, means, circuits, methods and functions described in connection with the aspects disclosed herein can be implemented by electronic hardware (e.g., a digital implementation, an analog implementation, or a combination of the two) , firmware, various forms of program or design code incorporating instructions (which can be referred to herein, for convenience, as “software” or a “software module) , or any combination of these techniques. To clearly illustrate this interchangeability of hardware, firmware and software, various illustrative components, blocks, modules, circuits, and steps have been described above generally in terms of their functionality. Whether such functionality is implemented as hardware, firmware or software, or a combination of these techniques, depends upon the particular application and design constraints imposed on the overall system. Skilled artisans can implement the described functionality in various ways for each particular application, but such implementation decisions do not cause a departure from the scope of the present disclosure.
[0172] Furthermore, a person of ordinary skill in the art would understand that various illustrative logical blocks, modules, devices, components and circuits described herein can be implemented within or performed by an integrated circuit (IC) that can include a general purpose processor, a digital signal processor (DSP) , an application specific integrated circuit (ASIC) , a field programmable gate array (FPGA) or other programmable logic device, or any combination thereof. The logical blocks, modules, and circuits can further include antennas and / or transceivers to communicate with various components within the network or within the device. A general purpose processor can be a microprocessor, but in the alternative, the processor can be any conventional processor, controller, or state machine. A processor can also be implemented as a combination of computing devices, e.g., a combination of a DSP and a microprocessor, a plurality of microprocessors, one or more microprocessors in conjunction with a DSP core, or any other suitable configuration to perform the functions described herein.
[0173] If implemented in software, the functions can be stored as one or more instructions or code on a computer-readable medium. Thus, the steps of a method or algorithm disclosed herein can be implemented as software stored on a computer-readable medium. Computer-readable media includes both computer storage media and communication media including any medium that can be enabled to transfer a computer program or code from one place to another. A storage media can be any available media that can be accessed by a computer. By way of example, and not limitation, such computer-readable media can include RAM, ROM, EEPROM, CD-ROM or other optical disk storage, magnetic disk storage or other magnetic storage devices, or any other medium that can be used to store desired program code in the form of instructions or data structures and that can be accessed by a computer.
[0174] In this document, the term “module” as used herein, refers to software, firmware, hardware, and any combination of these elements for performing the associated functions described herein. Additionally, for purpose of discussion, the various modules are described as discrete modules; however, as would be apparent to one of ordinary skill in the art, two or more modules may be combined to form a single module that performs the associated functions according arrangements of the present solution.
[0175] Additionally, memory or other storage, as well as communication components, may be employed in arrangements of the present solution. It will be appreciated that, for clarity purposes, the above description has described arrangements of the present solution with reference to different functional units and processors. However, it will be apparent that any suitable distribution of functionality between different functional units, processing logic elements or domains may be used without detracting from the present solution. For example, functionality illustrated to be performed by separate processing logic elements, or controllers, may be performed by the same processing logic element, or controller. Hence, references to specific functional units are only references to a suitable means for providing the described functionality, rather than indicative of a strict logical or physical structure or organization.
[0176] Various modifications to the implementations described in this disclosure will be readily apparent to those skilled in the art, and the general principles defined herein can be applied to other implementations without departing from the scope of this disclosure. Thus, the disclosure is not intended to be limited to the implementations shown herein, but is to be accorded the widest scope consistent with the novel features and principles disclosed herein, as recited in the claims below.
Claims
1.A wireless communication method, comprising:determining, by a first wireless communication device, configuration for Sidelink (SL) sensing; andperforming by the first wireless communication device, the SL sensing according to the configuration.2.The method of claim 1, whereinthe SL sensing is performed in a monostatic sensing mode;the configuration comprises SL sensing Reference Signal (RS) configuration; andthe SL sensing RS configuration is configured for at least one of each wireless communication device, for each frequency resource, for each carrier, for each SL sensing RS resource pool, for each SL sensing RS resource set, or for each SL sensing RS resource.3.The method of claim 1, whereinthe SL sensing is performed in a monostatic sensing mode;the configuration comprises a list of at least one frequency carrier; andone or more of the list of at least one frequency carrier is dedicated to the monostatic sensing mode.4.The method of claim 1, whereinthe SL sensing is performed in a monostatic sensing mode;the configuration comprises a list of at least one Bandwidth Part (BWP) ; andone or more of the list of at least one BWP is dedicated to the monostatic sensing mode.5.The method of claim 1, whereinthe SL sensing is performed in a monostatic sensing mode;the configuration comprises a list of at least one SL resource pool; andone or more of the list of at least one SL resource pool is dedicated to the monostatic sensing mode.6.The method of claim 5, whereinthe SL sensing is performed in a monostatic sensing mode;for a Bandwidth Part (BWP) used for SL, the configuration comprises one or more SL resource pools comprising one or more of:an SL resource pool for SL communication;an SL resource pool for SL positioning; oran SL resource pool dedicated to the monostatic sensing mode.7.The method of claim 1, whereinthe SL sensing is performed in a monostatic sensing mode;the configuration comprises one or more Reception (Rx) and Transmission (Tx) SL resource pools dedicated to the monostatic sensing mode; andperforming the SL sensing according to the configuration comprises transmitting a first SL sensing Reference Signal (RS) or receiving a second SL sensing RS using one or more resource in the one or more Rx and Tx SL resource pools.8.The method of claim 1, further comprising reporting, by the first wireless communication device to a network, capability of the first wireless communication device, whereinthe capability comprises an indication that the first wireless communication device supports a combination of SL sensing RS processing and SL sensing RS transmitting; andthe network comprises at least one of a base station or a Sensing core Network (SF) .9.The method of claim 8, wherein the capability further comprises at least one of:a maximum sensing RS bandwidth for both sensing RS transmitting and processing by the first wireless communication device;a maximum number of sensing RS resources capable of being transmitted and processed by the first wireless communication device within a time period;a maximum number of slots with active sensing RS resources that the first wireless communication device is capable of transmitting and processing in parallel; ora minimum time needed for the first wireless communication to process a sensing RS resource after transmitting using a sensing RS resource.10.The method of claim 1, whereinthe SL sensing is performed in a bistatic sensing mode;the configuration comprises SL sensing Reference Signal (RS) configuration; andthe SL sensing RS configuration is configured for at least one of a dedicated bistatic sensing resource pool, a shared positioning and sensing resource pool, a shared resource pool for communication, positioning, and sensing, an SL carrier for bistatic sensing, or an SL Bandwidth Part (BWP) for bistatic sensing.11.The method of claim 1, whereinthe SL sensing is performed in a bistatic sensing mode;the configuration comprises a list of at least one SL resource pool; andone or more of the list of at least one SL resource pool is dedicated to the bistatic sensing mode.12.The method of claim 1, whereinthe SL sensing is performed in a bistatic sensing mode;the configuration comprises at least one SL resource pool dedicated to Reception (Rx) in the bistatic sensing mode or at least one SL resource pool dedicated to Transmission (Tx) in the bistatic sensing mode.13.The method of claim 1, whereinthe SL sensing is performed in a bistatic sensing mode;the configuration comprises one or more dedicated SL Positioning Reference Signal (PRS) resource pools, wherein the one or more dedicated SL PRS resource pools is configured to be used for SL positioning; andan indicator can indicate one of the one or more dedicated SL PRS resource pools is capable of being used for the SL sensing.14.The method of claim 1, whereinthe configuration comprises configuring an SL sensing Reference Signal (RS) in a dedicated SL Positioning Reference Signal (PRS) resource pool;the dedicated SL PRS resource pool does not include an SL sensing RS configuration; andthe dedicated SL PRS resource pool is not used for both positioning and sensing.15.The method of claim 1, wherein the configuration comprises an SL resource pool configured for:SL bistatic sensing and SL communication; orSL bistatic sensing, SL communication, and SL positioning.16.The method of claim 1, wherein the configuration comprises a usage of an SL resource pool includes one or more of communication, sensing, and positioning.17.The method of claim 1, whereinthe configuration comprises a resource pool;an SL sensing Reference Signal (RS) is multiplexed with a Physical Sidelink Shared Channel (PSSCH) in time-domain resource in the resource pool;a number of frequency-domain resources is determined based on least in part of the SL sensing RS in the time-domain resource.18.The method of claim 1, the method further comprises determining a set of time-domain resources of a resource pool used in a bistatic sensing mode, wherein the set of time-domain resources comprises semi-statically Subband non-overlapping Full Duplex (SBFD) resources indicated by a higher layer of a serving cell, wherein the SBFD resources are configured to be used for the first wireless communication device transmitting uplink signals or channels or transmitting SL signals or channels.19.The method of claim 1, whereinthe configuration comprises an indicator indicating a usage for an SL sensing resource pool or for an SL sensing resource;the indicator indicates that the SL sensing resource pool or the SL sensing resource is only for SL sensing RS transmission, only for SL sensing RS reception, for both the SL sensing transmission RS and the SL sensing RS reception.20.The method of claim 1, whereinthe configuration comprises an indicator indicating a usage for an SL sensing resource pool or for an SL sensing resource;the indicator indicates that SL sensing resource pool or the SL sensing resource is used for bistatic sensing mode, for monostatic sensing mode, for both the bistatic sensing mode and the monostatic sensing mode.21.The method of claim 1, wherein the configuration comprises that an SL sensing resource pool or for an SL sensing resource configured to be used for transmitting SL sensing Reference Signal (RS) is also used for bistatic sensing or monostatic sensing.22.The method of claim 1, wherein the configuration comprises that an SL sensing resource pool or for an SL sensing resource configured to be used for at least one of:one or more sensing areas;one or more sensing tasks; orone or more use cases.23.The method of claim 1, whereinthe configuration comprises a usage indicator in an SL resource pool for full duplex, in an SL Bandwidth Part (BWP) for full duplex, or in an SL carrier for full duplex; andthe usage indicator can indicate whether an SL resource pool or an SL resource is capable of being used for at least one of sensing, Integrated Sensing and Communication (ISAC) , communication, or positioning.24.The method of claim 1, whereinthe configuration comprises an indicator indicating that one or more resource pools dedicated to SL Air-To-Everything (A2X) service; andthe indicator indicates that the one or more resource pools dedicated to A2X service is capable of being used for at least one of SL sensing, monostatic sensing, bistatic sensing, sensing and communication, sensing and positioning, sensing and communication and positioning, or full duplex.25.The method of claim 1, wherein the configuration comprises one or more resource pools dedicated to at least one of SL Air-To-Everything (A2X) sensing, Integrated Sensing and Communication (ISAC) , monostatic sensing, or bistatic sensing.26.The method of claim 1, whereinthe configuration comprises an SL Control Information (SCI) used for scheduling both an SL sensing Reference Signal (RS) and another type of SL RS; andthe SL sensing RS and the another type of SL RS are configured to be jointly used for the SL sensing for an SL resource pool.27.The method of claim 1, whereinthe configuration comprises an SL Control Information (SCI) used for scheduling both an SL sensing Reference Signal (RS) and another type of SL RS;the SCI comprises an association identifier (ID) or group ID identifying the SL sensing RS and the another type of SL RS; andthe first wireless communication device jointly processes the SL sensing RS and the another type of SL RS having the same association ID or group ID.28.The method of claim 1, wherein the configuration comprises an SL Control Information (SCI) having a one-bit indicator indicating whether a resource for SL Positioning Reference Signal (PRS) and a resource for SL sensing Reference Signal (RS) are associated or grouped.29.The method of claim 1, wherein the configuration comprises an SL Control Information (SCI) comprising:an identifier (ID) of an SL sensing Reference Signal (RS) for a time-domain resource; anda bit payload for the time-domain resource having an ID of an SL sensing RS resource mapped to a number of SL sensing RS resources associated with a resource for SCI.30.The method of claim 1, wherein the configuration comprises an SL Positioning Reference Signal (PRS) configured for both the SL sensing and SL positioning, wherein the SL sensing is performed using the SL PRS.31.The method of claim 1, wherein the configuration comprises Time-Division Multiplexing (TDM) -based multiplexing an SL sensing Reference Signal (RS) and an SL Positioning Reference Signal (PRS) in a time-domain resource.32.The method of claim 1, wherein the configuration comprises comb-based multiplexing an SL sensing Reference Signal (RS) and an SL Positioning Reference Signal (PRS) in a time-domain resource.33.The method of claim 1, wherein the configuration comprises a Downlink Control Information (DCI) comprising at least one of:an indicator indicating whether sensing Reference Signal (RS) is scheduled;a resource pool ID for a resource pool;a time gap from the DCI to a first scheduled sensing RS;at least one SL sensing RS resource ID;SL Control Information (SCI) fields;a Configured Grant (CG) index;an activation or deactivation of CG type2;an association / group ID;a sensing RS request or requested sensing RS transmission characteristics;1 bit indicating whether SL PRS can be used for the SL sensing;an SL PRS resource;one indicator indicating whether SL sensing RS and another type of SL RS are jointly used for sensing; orone indicator indicating whether SL sensing RS share a same antenna port or a same beam with the another type of SL RS.34.The method of claim 1, whereinthe configuration comprises one or more Configured Grants (CGs) for the SL sensing; andthe one or more CGs are defined by at least one of a CG index, a CG periodicity, a slot offset, a System Frame Number (SFN) , a sensing resource pool index, a sensing Reference Signal (RS) resource Identifier (ID) , a time resource, a maximum transmission number of an SL sensing RS, or a priority for the SL sensing.35.The method of claim 1, wherein the first wireless communication device lacks knowledge of sensing Quality of Service (QoS) information, and the configuration comprises one or more of UE-UE signaling or Sensing core Network (SF) -UE signaling before the first wireless communication device requests resource allocation from a network.36.The method of claim 1, the configuration is determined based on sensing Quality of Service (QoS) information, wherein,the sensing QoS information comprises at least one of sensing priority, sensing use case, sensing delay budget, sensing area, sensing Reference Signal (RS) periodicity, response time, timing accuracy requirement, velocity accuracy requirement, or angle accuracy requirement.37.The method of claim 1, further comprising at least one of:sending, by the first wireless communication device to a network, first higher layer signaling comprising sensing Quality of Service (QoS) information, the first wireless communication device to transmit an SL sensing Reference Signal (RS) ;sending, by the first wireless communication device to the network, second higher layer signaling requesting Configured Grant (CG) resources for the SL sensing, the second higher layer signaling comprises the sensing QoS information;sending, by the first wireless communication device to the network, a Medium Access Control (MAC) Control Element (CE) requesting Dynamic Grant (DG) resource allocation, the MAC CE comprises the sensing QoS information;receiving, by the first wireless communication device from the network, a configuration on whether the first wireless communication device is to use the networking controlling resource allocation or the autonomous sensing RS resource allocation,sending, by the first wireless communication device to the network, in response to successfully receiving Dynamic Grant (DG) Downlink Control Information (DCI) , a confirmation MAC CE.38.The method of claim 1, wherein a Sensing core Network (SF) coordinate sensing Reference Signal (RS) configurations of different base stations or Transmission / Reception Points (TRPs) .39.The method of claim 1, wherein a Sensing core Network (SF) requests different base stations or Transmission / Reception Points (TRPs) to coordinate with each other for determining sensing Reference Signal (RS) configurations.40.The method of claim 1, further comprising sending an SL sensing Reference Signal (RS) by the first sensing node in response to at least one of:signaling from a sensing node via higher layer signaling or lower layer signaling;trigger by higher layer of the fist wireless communication device; ortrigger by a Sensing core Network (SF) .41.The method of claim 1, wherein performing the SL sensing comprises sensing all resources in a sensing window.42.A wireless communication apparatus comprising at least one processor and a memory, wherein the at least one processor is configured to read code from the memory and implement the method recited in claim 1.43.A computer program product comprising a computer-readable program medium code stored thereupon, the code, when executed by at least one processor, causing the at least one processor to implement the method recited in claim 1.
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