[go: up one dir, main page]

WO2024197742A1 - Dispositif, procédé et support lisible par ordinateur pour des communications de liaison latérale - Google Patents

Dispositif, procédé et support lisible par ordinateur pour des communications de liaison latérale Download PDF

Info

Publication number
WO2024197742A1
WO2024197742A1 PCT/CN2023/085240 CN2023085240W WO2024197742A1 WO 2024197742 A1 WO2024197742 A1 WO 2024197742A1 CN 2023085240 W CN2023085240 W CN 2023085240W WO 2024197742 A1 WO2024197742 A1 WO 2024197742A1
Authority
WO
WIPO (PCT)
Prior art keywords
terminal device
beam measurement
reference signals
measurement report
transmission
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
PCT/CN2023/085240
Other languages
English (en)
Inventor
Zhaobang MIAO
Gang Wang
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
NEC Corp
Original Assignee
NEC Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by NEC Corp filed Critical NEC Corp
Priority to PCT/CN2023/085240 priority Critical patent/WO2024197742A1/fr
Publication of WO2024197742A1 publication Critical patent/WO2024197742A1/fr
Anticipated expiration legal-status Critical
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
    • H04B7/0686—Hybrid systems, i.e. switching and simultaneous transmission
    • H04B7/0695—Hybrid systems, i.e. switching and simultaneous transmission using beam selection
    • H04B7/06952—Selecting one or more beams from a plurality of beams, e.g. beam training, management or sweeping
    • H04B7/06954—Sidelink beam training with support from third instance, e.g. the third instance being a base station
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/0091—Signalling for the administration of the divided path, e.g. signalling of configuration information
    • H04L5/0094—Indication of how sub-channels of the path are allocated
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W92/00—Interfaces specially adapted for wireless communication networks
    • H04W92/16—Interfaces between hierarchically similar devices
    • H04W92/18—Interfaces between hierarchically similar devices between terminal devices

Definitions

  • Embodiments of the present disclosure generally relate to the field of telecommunication, and in particular, to device, method and computer readable medium for sidelink (SL) communications.
  • SL sidelink
  • Enhanced sidelink operation on Frequency Range 2 (FR2) licensed spectrum may comprise the support of sidelink beam management (including initial beam-pairing, beam maintenance, and beam failure recovery, and so on) by reusing existing sidelink Channel State Information (CSI) framework and reusing Uu beam management concepts wherever possible.
  • CSI Channel State Information
  • Beam management in FR2 licensed spectrum considers sidelink unicast communication only.
  • Directional beam operation may have impacts on reception of Physical Sidelink Shared Channel (PSSCH) transmission at a terminal device.
  • PSSCH Physical Sidelink Shared Channel
  • example embodiments of the present disclosure provide devices, methods and computer readable medium for sidelink communications.
  • a first terminal device comprising a processor.
  • the processor is configured to cause the first terminal device to: determine an uplink resource based on a time interval, wherein the time interval is between reception of one of sidelink (SL) beam measurement reference signals and transmission of an SL beam measurement report to a network device, or between reception of an indication of SL resources for the SL beam measurement reference signals and transmission of the SL beam measurement report; and transmit the SL beam measurement report to the network device on the uplink resource.
  • SL sidelink
  • a method for sidelink communications comprises: determining, at a first terminal device, an uplink resource based on a time interval, wherein the time interval is between reception of one of SL beam measurement reference signals and transmission of an SL beam measurement report to a network device, or between reception of an indication of SL resources for the SL beam measurement reference signals and transmission of the SL beam measurement report; and transmitting the SL beam measurement report to the network device on the uplink resource.
  • a computer readable medium having instructions stored thereon.
  • the instructions when executed on at least one processor of a device, cause the device to perform the method according to the second aspect.
  • Fig. 1 illustrates an example communication network in which embodiments of the present disclosure can be implemented
  • Fig. 2 illustrates an example of a beam conflict for RX beams for receptions of PSSCH transmissions in accordance with some embodiments of the present disclosure
  • Fig. 3 illustrates a flowchart of an example method in accordance with some embodiments of the present disclosure
  • Fig. 4 illustrates a signaling chart illustrating an example process for communications in accordance with some embodiments of the present disclosure
  • Figs. 5A and 5B illustrate an example of a time interval associated with transmission of an SL beam measurement report in accordance with some embodiments of the present disclosure, respectively;
  • Fig. 6 illustrates a signaling chart illustrating an example process for communications in accordance with other embodiments of the present disclosure
  • Fig. 7 illustrate an example of mapping between transmission of SL beam measurement reference signals and transmission of an SL beam measurement report in accordance with some embodiments of the present disclosure
  • Fig. 8 illustrates an example of a time interval associated with transmission of an SL beam measurement report in accordance with some embodiments of the present disclosure.
  • Fig. 9 is a simplified block diagram of a device that is suitable for implementing embodiments of the present disclosure.
  • terminal device refers to any device having wireless or wired communication capabilities.
  • the terminal device include, but not limited to, user equipment (UE) , personal computers, desktops, mobile phones, cellular phones, smart phones, personal digital assistants (PDAs) , portable computers, tablets, wearable devices, internet of things (IoT) devices, Ultra-reliable and Low Latency Communications (URLLC) devices, Internet of Everything (IoE) devices, machine type communication (MTC) devices, device on vehicle for V2X communication where X means pedestrian, vehicle, or infrastructure/network, devices for Integrated Access and Backhaul (IAB) , Small Data Transmission (SDT) , mobility, Multicast and Broadcast Services (MBS) , positioning, dynamic/flexible duplex in commercial networks, reduced capability (RedCap) , Space borne vehicles or Air borne vehicles in Non-terrestrial networks (NTN) including Satellites and High Altitude Platforms (HAPs) encompassing Unmanned Aircraft Systems (UAS) , eX
  • UE user equipment
  • the ‘terminal device’ can further has ‘multicast/broadcast’ feature, to support public safety and mission critical, V2X applications, transparent IPv4/IPv6 multicast delivery, IPTV, smart TV, radio services, software delivery over wireless, group communications and IoT applications. It may also incorporate one or multiple Subscriber Identity Module (SIM) as known as Multi-SIM.
  • SIM Subscriber Identity Module
  • the term “terminal device” can be used interchangeably with a UE, a mobile station, a subscriber station, a mobile terminal, a user terminal or a wireless device.
  • network device refers to a device which is capable of providing or hosting a cell or coverage where terminal devices can communicate.
  • a network device include, but not limited to, a Node B (NodeB or NB) , an evolved NodeB (eNodeB or eNB) , a next generation NodeB (gNB) , a transmission reception point (TRP) , a remote radio unit (RRU) , a radio head (RH) , a remote radio head (RRH) , an IAB node, a low power node such as a femto node, a pico node, a reconfigurable intelligent surface (RIS) , Network-controlled Repeaters, and the like.
  • NodeB Node B
  • eNodeB or eNB evolved NodeB
  • gNB next generation NodeB
  • TRP transmission reception point
  • RRU remote radio unit
  • RH radio head
  • RRH remote radio head
  • IAB node a low power node such
  • the terminal device or the network device may have Artificial intelligence (AI) or Machine learning capability. It generally includes a model which has been trained from numerous collected data for a specific function, and can be used to predict some information.
  • AI Artificial intelligence
  • Machine learning capability it generally includes a model which has been trained from numerous collected data for a specific function, and can be used to predict some information.
  • the terminal or the network device may work on several frequency ranges, e.g. Frequency Range 1 (FR1) (410 MHz –7125 MHz) , FR2 (24.25GHz to 52.6GHz) , frequency band larger than 100GHz as well as Tera Hertz (THz) . It can further work on licensed/unlicensed/shared spectrum.
  • FR1 Frequency Range 1
  • FR2 24.25GHz to 52.6GHz
  • THz Tera Hertz
  • the terminal device may have more than one connection with the network devices under Multi-Radio Dual Connectivity (MR-DC) application scenario.
  • MR-DC Multi-Radio Dual Connectivity
  • the terminal device or the network device can work on full duplex, flexible duplex and cross division duplex modes.
  • the network device may have the function of network energy saving, Self-Organizing Networks (SON) /Minimization of Drive Tests (MDT) .
  • the terminal may have the function of power saving.
  • test equipment e.g. signal generator, signal analyzer, spectrum analyzer, network analyzer, test terminal device, test network device, channel emulator.
  • the embodiments of the present disclosure may be performed according to any generation communication protocols either currently known or to be developed in the future.
  • Examples of the communication protocols include, but not limited to, the first generation (1G) , the second generation (2G) , 2.5G, 2.75G, the third generation (3G) , the fourth generation (4G) , 4.5G, the fifth generation (5G) communication protocols, 5.5G, 5G-Advanced networks, or the sixth generation (6G) networks.
  • the singular forms ‘a’ , ‘an’ and ‘the’ are intended to include the plural forms as well, unless the context clearly indicates otherwise.
  • the term ‘includes’ and its variants are to be read as open terms that mean ‘includes, but is not limited to. ’
  • the term ‘based on’ is to be read as ‘at least in part based on. ’
  • the term ‘some embodiments’ and ‘an embodiment’ are to be read as ‘at least some embodiments. ’
  • the term ‘another embodiment’ is to be read as ‘at least one other embodiment. ’
  • the terms ‘first, ’ ‘second, ’a nd the like may refer to different or same objects. Other definitions, explicit and implicit, may be included below.
  • values, procedures, or apparatus are referred to as ‘best, ’ ‘lowest, ’ ‘highest, ’ ‘minimum, ’ ‘maximum, ’ or the like. It will be appreciated that such descriptions are intended to indicate that a selection among many used functional alternatives can be made, and such selections need not be better, smaller, higher, or otherwise preferable to other selections.
  • Fig. 1 illustrates a schematic diagram of an example communication network 100 in which embodiments of the present disclosure can be implemented.
  • the communication network 100 may include a first terminal device 110, a second terminal device 120, a third terminal device 130, network devices 140 and 150.
  • the network devices 140 and 150 may communicate with the first terminal device 110, the second terminal device 120 and the third terminal device 130 via respective wireless communication channels.
  • the network device 140 may be a gNB in NR.
  • the network device 140 may be also referred to as an NR network device 140.
  • the network device 150 may be an eNB in Long Term Evolution (LTE) system.
  • LTE Long Term Evolution
  • the network device 150 may be also referred to as an LTE network device 150.
  • the communication network 100 may include any suitable number of network devices and/or terminal devices adapted for implementing embodiments of the present disclosure.
  • the communications in the communication network 100 may conform to any suitable standards including, but not limited to, Global System for Mobile Communications (GSM) , LTE, LTE-Evolution, LTE-Advanced (LTE-A) , Wideband Code Division Multiple Access (WCDMA) , Code Division Multiple Access (CDMA) , GSM EDGE Radio Access Network (GERAN) , Machine Type Communication (MTC) and the like.
  • GSM Global System for Mobile Communications
  • LTE LTE
  • LTE-Evolution LTE-Advanced
  • WCDMA Wideband Code Division Multiple Access
  • CDMA Code Division Multiple Access
  • GERAN GSM EDGE Radio Access Network
  • MTC Machine Type Communication
  • the communications may be performed according to any generation communication protocols either currently known or to be developed in the future. Examples of the communication protocols include, but not limited to, the first generation (1G) , the second generation (2G) , 2.5G, 2.75G, the third generation (3G) , the fourth generation (4G) , 4.5G, the fifth generation (5G)
  • the communications in the communication network 100 may comprise sidelink communication.
  • Sidelink communication is a wireless radio communication directly between two or more terminal devices, such as two or more terminal devices among the first terminal device 110, the second terminal device 120 and the third terminal device 130.
  • the two or more terminal devices that are geographically proximate to each other can directly communicate without going through the network device 140 or 150 or through a core network.
  • Data transmission in sidelink communication is thus different from typical cellular network communications, in which a terminal device transmits data to the network device 140 or 150 (i.e., uplink transmissions) or receives data from the network device 140 or 150 (i.e., downlink transmissions) .
  • data is transmitted directly from a source terminal device (such as the first terminal device 110) to a destination terminal device (such as the second terminal device 120) through the Unified Air Interface, e.g., PC5 interface, (i.e., sidelink transmissions) , as shown in Fig. 1.
  • Unified Air Interface e.g., PC5 interface
  • Sidelink communication can provide several advantages, including reducing data transmission load on a core network, system resource consumption, transmission power consumption, and network operation costs, saving wireless spectrum resources, and increasing spectrum efficiency of a cellular wireless communication system.
  • a sidelink communication manner includes but is not limited to device to device (D2D) communication, Vehicle-to-Everything (V2X) communication, etc.
  • D2D device to device
  • V2X Vehicle-to-Everything
  • V2X communication enables vehicles to communicate with other vehicles (i.e. Vehicle-to-Vehicle (V2V) communication) , with infrastructure (i.e. Vehicle-to-Infrastructure (V2I) , with wireless networks (i.e. Vehicle-to-Network (V2N) communication) , with pedestrians (i.e. Vehicle-to-Pedestrian (V2P) communication) , and even with the owner's home (i.e. Vehicle-to-Home (V2H) ) .
  • infrastructure include roadside units such as traffic lights, toll gates and the like.
  • V2X communication can be used in a wide range of scenarios, including in accident prevention and safety, convenience, traffic efficiency and clean driving, and ultimately in relation to autonomous or self-driving vehicles.
  • a terminal device uses resources in sidelink resource pools to transmit or receive signals.
  • the sidelink resource pools include resources in time domain and frequency domain, which are dedicated resources of the sidelink communication, or shared by the sidelink communication and a cellular link.
  • two modes of resource allocation may be used for sidelink, including network device schedules sidelink resources for terminal devices to perform sidelink signal transmission, named as mode 1 resource scheme in NR sidelink, and terminal device selects sidelink resources by itself to perform sidelink signal transmission, named as mode 2 resource scheme in NR sidelink.
  • directional beam operation may have impacts on reception of PSSCH transmission at one terminal device. This will be described with reference to Fig. 2.
  • Fig. 2 illustrates an example 200 of a beam conflict for RX beams for receptions of PSSCH transmissions in accordance with some embodiments of the present disclosure.
  • the example 200 will be described with reference to Fig. 1.
  • the first terminal device 110 may be a destination terminal device of both first PSSCH transmission from the second terminal device 120 and second PSSCH transmission from the third terminal device 130.
  • the first terminal device 110 may detect first sidelink control information (SCI) and second SCI that reserve first and second resources, respectively and both indicate an identifier (ID) of the first terminal device 110 in the “destination ID” field.
  • SCI sidelink control information
  • ID identifier
  • the first terminal device 110 may determine, based on the following, that there is a beam conflict for RX beams for receptions of the first and second PSSCH transmissions.
  • the first terminal device 110 may detect first sidelink control information (SCI) that includes first spatial related information (such as first Transmission Configuration Indication (TCI) , first quasi co-location (QCL) information or a first beam index) and a first priority value (represented by p 1 ) , and the first reserved resource 210 for first PSSCH transmission from the second terminal device 120.
  • SCI sidelink control information
  • the first terminal device 110 may detect second SCI that includes second spatial related information (such as second TCI, second QCL information or a second beam index) and a second priority value (represented by p 2 ) , and the second reserved resource 220 for second PSSCH transmission from the third terminal device 130.
  • the first terminal device 110 may determine that receiving (RX) beams corresponding to transmission (TX) beams as indicated in the first spatial related information and the second spatial related information are different or non-overlapped.
  • the first terminal device 110 may determine that the first and second resources overlap in time (such as in the same slot) .
  • the first terminal device 110 may determine that there is the beam conflict for RX beams for receptions of the first and second PSSCH transmissions.
  • the beam conflict means that one receiving UE may have multiple unicast receptions at the same slot, but the receiving UE is not able to perform directional receptions simultaneously using multiple RX beams.
  • a first terminal device determines an uplink resource based on a time interval.
  • the time interval is between reception of one of sidelink (SL) beam measurement reference signals and transmission of an SL beam measurement report to a network device, or between reception of an indication of SL resources for the SL beam measurement reference signals and transmission of the SL beam measurement report.
  • the first terminal device transmits the SL beam measurement report to the network device on the uplink resource.
  • the beam conflict may be avoided with mode 1 resource allocation of FR2 SL.
  • Fig. 3 illustrates a flowchart of an example method in accordance with some embodiments of the present disclosure.
  • the method 300 can be implemented at a communication device, such as one of the first terminal device 110, the second terminal device 120 and the third terminal device 130 as shown in Fig. 1.
  • a communication device such as one of the first terminal device 110, the second terminal device 120 and the third terminal device 130 as shown in Fig. 1.
  • the method 300 will be described with reference to Fig. 1 as performed by the first terminal device 110 without loss of generality.
  • the first terminal device 110 determines an uplink resource based on a time interval.
  • the time interval is between reception of one of SL beam measurement reference signals (BM-RS) and transmission of an SL beam measurement report to a network device, or between reception of an indication of SL resources for the SL beam measurement reference signals and transmission of the SL beam measurement report.
  • BM-RS SL beam measurement reference signals
  • the first terminal device 110 transmits the SL beam measurement report to the network device 140 on the uplink resource.
  • the beam conflict may be avoided.
  • the method 300 can be implemented at a terminal device which measures the SL beam measurement reference signals.
  • a terminal device measuring the SL beam measurement reference signals is also referred to as an RX UE, and a terminal device transmitting the SL beam measurement reference signals is also referred to as a TX UE.
  • RX UE a terminal device measuring the SL beam measurement reference signals
  • TX UE a terminal device transmitting the SL beam measurement reference signals
  • Fig. 4 illustrates a signaling chart illustrating an example process 400 for communications in accordance with some embodiments of the present disclosure.
  • the process 400 will be described with reference to Fig. 1.
  • the process 400 may be considered as an example implementation of the method 300.
  • the process 400 may involve the first terminal device 110, the second terminal device 120 and the network device 140.
  • the first terminal device 110 acts as a terminal device 110 which measures the SL beam measurement reference signals (i.e., RX UE)
  • the second terminal device 120 acts as a terminal device which transmits the SL beam measurement reference signals (i.e., TX UE)
  • the first terminal device 110 transmits the SL beam measurement report to the network device 140.
  • the second terminal device 120 may transmit 410, to the network device 140, a first request for SL resources for transmissions of the SL beam measurement reference signals.
  • the second terminal device 120 may transmit 410 the first request in a Media Access Control Control Element (MAC CE) .
  • MAC CE Media Access Control Control Element
  • the first request may comprise at least one of the following:
  • the number of the SL beam measurement reference signals may be equal to the number of beams that need to be trained.
  • the ID of the first terminal device 110 may be a Destination ID of the first terminal device 110 in unicast transmission.
  • the network device 140 may associate the received SL beam measurement report with the first terminal device 110 (i.e., the RX UE) .
  • the network device 140 may transmit 415, to the second terminal device 120, a configuration for the SL beam measurement reference signals.
  • the configuration may indicate the SL resources for transmissions of the SL beam measurement reference signals.
  • the second terminal device 120 may transmit 420, to the first terminal device 110, the SL beam measurement reference signals on the indicated SL resources.
  • the first terminal device 110 receives the SL beam measurement reference signals and performs beam measurement on the SL beam measurement reference signals to train TX beams and RX beams. Then, the first terminal device 110 generates the SL beam measurement report based on the beam measurement.
  • the first terminal device 110 determines 425 an uplink resource based on a time interval.
  • the time interval is between reception of one of the SL beam measurement reference signals and transmission of the SL beam measurement report to the network device 140. This will be described later with reference to Figs. 5A and 5B.
  • the first terminal device 110 transmits 430 the SL beam measurement report to the network device 140 on the determined uplink resource.
  • the SL beam measurement report may comprise information about available beam pairs, and each of the available beam pairs may comprise a TX beam and an RX beam paired with the TX beam.
  • the SL beam measurement report may comprise the information about available beam pairs as below:
  • TX beam index 1 represents a TX beam with an index of 1
  • RX beam index x represents an RX beam with an index of x which is paired with the TX beam with the index of 1
  • TX beam index 2 represents a TX beam with an index of 2
  • RX beam index x represents the RX beam with the index of x which is paired with the TX beam with the index of 2
  • the SL beam measurement report may further indicate at least one of the following: link quality between the first terminal device 110 and the second terminal device 120, wherein the link quality is associated with each of the available beam pairs, or an ID of the first terminal device 110 which measures the SL beam measurement reference signals.
  • the SL beam measurement report may be provided as below:
  • the BM-RS may be Channel State Information Reference Signal (CSI-RS) .
  • the link quality may be presented by Reference Signal Receiving Power (RSRP) or Signal to Interference plus Noise Ratio (SINR) of a beam pair between the first terminal device 110 and the second terminal device 120.
  • RSRP Reference Signal Receiving Power
  • SINR Signal to Interference plus Noise Ratio
  • each of the available beam pairs may be determined by the RX UE based on measured link quality of a respective beam pair.
  • each TX beam should be paired with at most one RX beam.
  • the network device 140 schedules one TX beam, the paired RX beam is also selected and scheduled.
  • an RX beam is uniquely identified by an index.
  • a single RX beam index from different unicast UE pairs refers to the same RX beam at RX UE, i.e., RX UE only maintains one set of RX beam x, y, z Vietnamese so as to help the network device 140 to schedule the same RX beam for multiple receptions at RX UE.
  • “Destination ID” may not be presented in the SL beam measurement report.
  • a priority of the SL beam measurement report may be equal to one.
  • the report may be in a format of MAC CE with a priority fixed to “1” .
  • the network device 140 Upon receiving the SL beam measurement report, the network device 140 determines resource allocation for SL transmission.
  • the network device 140 may also determine an indication of a TX beam for SL transmission to the first terminal device 110.
  • the indication of a TX beam is also referred to as a TX beam indication.
  • the network device 140 may transmit 440 information about the resource allocation to the second terminal device 120.
  • the network device 140 may also transmit the TX beam indication to the second terminal device 120. For example, if the network device 140 wants to schedule RX UE to use a same RX beam to perform multiple unicast receptions in one slot, the network device 140 may transmit the TX beam indication to the second terminal device 120.
  • the first terminal device 110 may transmit 435 the SL beam measurement report to the second terminal device 120.
  • the second terminal device 120 may determine 445 the TX beam based on the indication received from the network device 140.
  • the TX beam indication may be absent or invalid.
  • the network device 140 schedules the multiple unicast receptions in different slots by resource allocations or no beam receptions collision is identified, the network device 140 may not transmit the TX beam indication to the second terminal device 120.
  • the TX beam indication may be absent.
  • the second terminal device 120 may determine 445 the TX beam based on the SL beam measurement report.
  • the second terminal device 120 may determine 445 the TX beam based on the indication received from the network device 140.
  • the second terminal device 120 transmits 450, to the first terminal device 110, spatial related information indicating the TX beam.
  • Figs. 5A and 5B illustrate an example of a time interval associated with transmission of an SL beam measurement report in accordance with some embodiments of the present disclosure, respectively.
  • the second terminal device 120 transmits, to the first terminal device 110, the SL beam measurement reference signals (BM-RS) 510, 512, ..., 51N in SL carrier.
  • BM-RS SL beam measurement reference signals
  • the first terminal device 110 may determine an uplink resource based on a time interval which is represented by K1.
  • the time interval may be between reception of an end SL beam measurement reference signal 51N among the SL beam measurement reference signals and transmission of the SL beam measurement report 520.
  • the end SL beam measurement reference signal 51N is also referred to the last SL beam measurement reference signal 51N.
  • the time interval may be between reception of an initial SL beam measurement reference signal 510 among the SL beam measurement reference signals and transmission of the SL beam measurement report 520.
  • the initial SL beam measurement reference signal 510 is also referred to the first SL beam measurement reference signal 510.
  • the first terminal device 110 transmits the SL beam measurement report 520 to the network device 140 on the determined uplink (UL) resource in uplink carrier.
  • the uplink resource may be a configured or preconfigured Physical Uplink Control Channel (PUCCH) resource or Physical Uplink Shared Channel (PUSCH) resource.
  • PUCCH Physical Uplink Control Channel
  • PUSCH Physical Uplink Shared Channel
  • the time interval (K1) may have a configured or preconfigured value from a higher layer (such as RRC layer) of the first terminal device 110.
  • the second terminal device 120 transmits, to the first terminal device 110, the SL beam measurement reference signals (BM-RS) 530, 532, ..., 53N in SL carrier.
  • BM-RS SL beam measurement reference signals
  • the second terminal device 120 transmits multiple pieces of sidelink control information (SCI) to the first terminal device 110.
  • SCI sidelink control information
  • Each of the multiple pieces of SCI is associated with one of the SL beam measurement reference signals 530, 532, ..., 53N and indicates a time interval which is represented by K2.
  • the time interval is between reception of any of the SL beam measurement reference signals 530, 532, ..., 53N and transmission of the SL beam measurement report 520.
  • the time interval may have varied values.
  • the first terminal device 110 may determine an uplink resource based on any of the varied values.
  • the first terminal device 110 transmits the SL beam measurement report 520 to the network device 140 on the determined uplink resource in uplink carrier.
  • the time interval may be determined based on a Subcarrier Spacing (SCS) of an SL carrier.
  • SCS Subcarrier Spacing
  • the time interval may be in unit of slot or symbol.
  • the method 300 can be implemented at a terminal device which transmits the SL beam measurement reference signals.
  • a terminal device measuring the SL beam measurement reference signals is also referred to as an RX UE, and a terminal device transmitting the SL beam measurement reference signals is also referred to as a TX UE.
  • RX UE a terminal device measuring the SL beam measurement reference signals
  • TX UE a terminal device transmitting the SL beam measurement reference signals
  • Fig. 6 illustrates a signaling chart illustrating an example process 600 for communications in accordance with some embodiments of the present disclosure.
  • the process 600 will be described with reference to Fig. 1.
  • the process 600 may be considered as another example implementation of the method 300.
  • the process 600 may involve the first terminal device 110, the second terminal device 120 and the network device 140.
  • the first terminal device 110 acts as a terminal device 110 which measures the SL beam measurement reference signals (i.e., RX UE)
  • the second terminal device 120 acts as a terminal device which transmits the SL beam measurement reference signals (i.e., TX UE)
  • the first terminal device 110 may be out of coverage of the network device 140.
  • the first terminal device 110 transmits the SL beam measurement report to the second terminal device 120.
  • the second terminal device 120 transmits the SL beam measurement report to the network device 140.
  • the second terminal device 120 may transmit 610, to the network device 140, a first request for SL resources for transmissions of the SL beam measurement reference signals.
  • the second terminal device 120 may transmit the first request in an MAC CE.
  • the first request may comprise at least one of the following:
  • the number of the SL beam measurement reference signals may be equal to the number of beams that need to be trained.
  • the ID of the first terminal device 110 may be a Destination ID of the first terminal device 110 in unicast transmission.
  • the network device 140 may associate the received SL beam measurement report with the first terminal device 110 (i.e., the RX UE) .
  • the network device 140 may transmit 612, to the second terminal device 120, a configuration for the SL beam measurement reference signals.
  • the configuration may indicate the SL resources for transmissions of the SL beam measurement reference signals.
  • the second terminal device 120 may transmit 614, to the network device 140, a second request for an SL resource for receiving the SL beam measurement report from the first terminal device 110.
  • the SL resource is also used by the first terminal device 110 for transmitting the SL beam measurement report to the second terminal device 120.
  • the network device 140 may transmit 616 allocation information about the SL resource to the second terminal device 120. For example, the network device 140 may transmit the allocation information in downlink control information (DCI) .
  • DCI downlink control information
  • the second terminal device 120 may receive the allocation information about the SL resource from the network device 140.
  • the second terminal device 120 transmits 618 the allocation information to the first terminal device 110.
  • the second terminal device 120 i.e., TX UE
  • the first terminal device 110 i.e., RX UE
  • the second terminal device 120 may transmit sidelink control information (SCI) associated with the SL beam measurement reference signals.
  • SCI comprises the allocation information. This will be described with reference to Fig. 7.
  • Fig. 7 illustrate an example of mapping between transmission of SL beam measurement reference signals and transmission of an SL beam measurement report in accordance with some embodiments of the present disclosure.
  • the second terminal device 120 transmits 620, in SL carrier to the first terminal device 110, the SL beam measurement reference signals (BM-RS) 710, 712, ..., 71N on the SL resources indicated by the network device 140 at 612.
  • SCI scheduling transmissions of the SL beam measurement reference signals 710, 712, ..., 71N may indicate an SL resource for receiving the SL beam measurement report from the first terminal device 110.
  • the first terminal device 110 receives the SL beam measurement reference signals 710, 712, ..., 71N and performs beam measurement on the SL beam measurement reference signals 710, 712, ..., 71N to train TX beams and RX beams. Then, the first terminal device 110 generates the SL beam measurement report based on the beam measurement.
  • the first terminal device 110 determines the SL resource based on the SCI transmitted by the second terminal device 120. In turn, the first terminal device 110 transmits 625 the SL beam measurement report 720 to the second terminal device 120 on the SL resource.
  • action 620 is shown to be subsequent to the action 618, the action 620 may be performed in parallel to the action 618.
  • the SL resource for receiving (or transmitting) the SL beam measurement report and SL resources for transmitting the SL beam measurement reference signals are within a single SL resource pool.
  • the second terminal device 120 may not transmit the second request to the network device 140.
  • the first terminal device 110 may transmit a scheduling request (SR) or buffer status report (BSR) to the network device 140.
  • the network device 140 may transmit the allocation information about the SL resource to the first terminal device 110.
  • the first terminal device 110 may transmit the SL beam measurement report on the SL resource assigned by the network device 140.
  • the first terminal device 110 may select the SL resource for transmitting the SL beam measurement report to the second terminal device 120 with mode 2 resource allocation. Accordingly, the first terminal device 110 may transmit the SL beam measurement report on the SL resource selected with mode 2 resource allocation.
  • the second terminal device 120 Upon receiving the SL beam measurement report, the second terminal device 120 determines 630 an uplink resource based on a time interval.
  • the time interval is between reception of an indication of SL resources for the SL beam measurement reference signals and transmission of the SL beam measurement report. This will be described later with reference to Fig. 8.
  • the second terminal device 120 transmits 635 the SL beam measurement report to the network device 140 on the determined uplink resource.
  • the SL beam measurement report may comprise information about available beam pairs, and each of the available beam pairs may comprise a TX beam and an RX beam paired with the TX beam.
  • the SL beam measurement report may comprise the information about available beam pairs as below:
  • TX beam index 1 represents a TX beam with an index of 1 and “RX beam index x” represents an RX beam with an index of x which is paired with the TX beam with the index of 1
  • TX beam index 2 represents a TX beam with an index of 2
  • RX beam index x represents the RX beam with the index of x which is paired with the TX beam with the index of 2, and so on.
  • the SL beam measurement report may further indicate at least one of the following: link quality between the first terminal device 110 and the second terminal device 120, wherein the link quality is associated with each of the available beam pairs, or an ID of the first terminal device 110 which measures the SL beam measurement reference signals.
  • the SL beam measurement report may be provided as below:
  • the link quality may be presented by Reference Signal Receiving Power (RSRP) or Signal to Interference plus Noise Ratio (SINR) of a beam pair between the first terminal device 110 and the second terminal device 120.
  • RSRP Reference Signal Receiving Power
  • SINR Signal to Interference plus Noise Ratio
  • each of the available beam pairs may be determined by the RX UE based on measured link quality of a respective beam pair.
  • each TX beam should be paired with at most one RX beam.
  • the network device 140 schedules one TX beam, the paired RX beam is also selected and scheduled.
  • an RX beam is uniquely identified by an index.
  • a single RX beam index from different unicast UE pairs refers to the same RX beam at RX UE, i.e., RX UE only maintains one set of RX beam x, y, z Vietnamese so as to help the network device 140 to schedule the same RX beam for multiple receptions at RX UE.
  • the SL beam measurement report indicates a first identity of the first terminal device 110 and a second identity of the second terminal device 120.
  • “Destination ID” may not be presented in the SL beam measurement report.
  • a priority of the SL beam measurement report may be equal to one.
  • the report may be in a format of MAC CE with a priority fixed to “1” .
  • the network device 140 Upon receiving the SL beam measurement report, the network device 140 determines resource allocation for SL transmission.
  • the network device 140 may also determine an indication of a TX beam for SL transmission to the first terminal device 110.
  • the indication of a TX beam is also referred to as a TX beam indication.
  • the network device 140 may transmit 640 information about the resource allocation to the second terminal device 120.
  • the network device 140 may also transmit the TX beam indication to the second terminal device 120. For example, if the network device 140 wants to schedule RX UE to use a same RX beam to perform multiple unicast receptions in one slot, the network device 140 may transmit the TX beam indication to the second terminal device 120.
  • the second terminal device 120 may determine 645 the TX beam based on the indication received from the network device 140.
  • the TX beam indication may be absent or invalid.
  • the network device 140 schedules the multiple unicast receptions in different slots by resource allocations or no beam receptions collision is identified, the network device 140 may not transmit the TX beam indication to the second terminal device 120.
  • the TX beam indication may be absent.
  • the second terminal device 120 may determine 645 the TX beam based on the SL beam measurement report.
  • the second terminal device 120 transmits 650, to the first terminal device 110, spatial related information indicating the TX beam.
  • Fig. 8 illustrates an example of a time interval associated with transmission of an SL beam measurement report in accordance with some embodiments of the present disclosure.
  • the network device 120 transmits downlink control information (DCI) 800 to the second terminal device 120.
  • the DCI 800 comprises an indication of SL resources for transmitting SL beam measurement reference signals.
  • the second terminal device 120 transmits, in SL carrier to the first terminal device 110, the SL beam measurement reference signals (BM-RS) 810, 812, ..., 81N on the SL resources indicated in the DCI 800.
  • SCI scheduling transmissions of the SL beam measurement reference signals 810, 812, ..., 81N may indicate an SL resource for receiving the SL beam measurement report from the first terminal device 110.
  • the first terminal device 110 receives the SL beam measurement reference signals 810, 812, ..., 81N and performs beam measurement on the SL beam measurement reference signals 810, 812, ..., 81N to train TX beams and RX beams. Then, the first terminal device 110 generates the SL beam measurement report based on the beam measurement.
  • the first terminal device 110 determines the SL resource based on the SCI transmitted by the second terminal device 120. In turn, the first terminal device 110 transmits the SL beam measurement report 820 to the second terminal device 120 on the SL resource indicated in the SCI.
  • the second terminal device 120 determines an uplink resource based on the reception of the DCI 800 and a time interval (represented by K) .
  • the time interval may be configured or pre-configured by higher layer of the second terminal device 120.
  • the time interval is determined based on an SCS of an SL carrier.
  • the second terminal device 120 transmits the SL beam measurement report 830 to the network device 140 on the uplink resource in uplink carrier.
  • Fig. 9 is a simplified block diagram of a device 900 that is suitable for implementing embodiments of the present disclosure.
  • the device 900 can be considered as a further example embodiment of one of the terminal devices 110, 120 and 130 as shown in Fig. 1. Accordingly, the device 900 can be implemented at or as at least a part of one of the terminal devices 110, 120 and 130.
  • the device 900 includes a processor 910, a memory 920 coupled to the processor 910, a suitable transceiver 940 coupled to the processor 910, and a communication interface coupled to the transceiver 940.
  • the memory 910 stores at least a part of a program 930.
  • the transceiver 940 may be for bidirectional communications or a unidirectional communication based on requirements.
  • the transceiver 940 may include at least one of a transmitter and a receiver.
  • the transmitter and the receiver may be functional modules or physical entities.
  • the transceiver 940 has at least one antenna to facilitate communication, though in practice an Access Node mentioned in this application may have several ones.
  • the communication interface may represent any interface that is necessary for communication with other network elements, such as X2/Xn interface for bidirectional communications between eNBs/gNBs, S1/NG interface for communication between a Mobility Management Entity (MME) /Access and Mobility Management Function (AMF) /SGW/UPF and the eNB/gNB, Un interface for communication between the eNB/gNB and a relay node (RN) , or Uu interface for communication between the eNB/gNB and a terminal device.
  • MME Mobility Management Entity
  • AMF Access and Mobility Management Function
  • RN relay node
  • Uu interface for communication between the eNB/gNB and a terminal device.
  • the components included in the apparatuses and/or devices of the present disclosure may be implemented in various manners, including software, hardware, firmware, or any combination thereof.
  • one or more units may be implemented using software and/or firmware, for example, machine-executable instructions stored on the storage medium.
  • parts or all of the units in the apparatuses and/or devices may be implemented, at least in part, by one or more hardware logic components.
  • FPGAs Field-programmable Gate Arrays
  • ASICs Application-specific Integrated Circuits
  • ASSPs Application-specific Standard Products
  • SOCs System-on-a-chip systems
  • CPLDs Complex Programmable Logic Devices

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

Des modes de réalisation de la présente divulgation concernent des dispositifs, des procédés et des supports lisibles par ordinateur pour des communications de liaison latérale. Un premier dispositif terminal détermine une ressource de liaison montante sur la base d'un intervalle de temps. L'intervalle de temps se situe entre la réception de l'un des signaux de référence de mesure de faisceau de liaison latérale (SL) et la transmission d'un rapport de mesure de faisceau SL à un dispositif de réseau, ou entre la réception d'une indication de ressources SL pour les signaux de référence de mesure de faisceau SL et la transmission du rapport de mesure de faisceau SL. À son tour, le premier dispositif terminal transmet le rapport de mesure de faisceau SL au dispositif de réseau sur la ressource de liaison montante.
PCT/CN2023/085240 2023-03-30 2023-03-30 Dispositif, procédé et support lisible par ordinateur pour des communications de liaison latérale Pending WO2024197742A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/CN2023/085240 WO2024197742A1 (fr) 2023-03-30 2023-03-30 Dispositif, procédé et support lisible par ordinateur pour des communications de liaison latérale

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2023/085240 WO2024197742A1 (fr) 2023-03-30 2023-03-30 Dispositif, procédé et support lisible par ordinateur pour des communications de liaison latérale

Publications (1)

Publication Number Publication Date
WO2024197742A1 true WO2024197742A1 (fr) 2024-10-03

Family

ID=92902988

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2023/085240 Pending WO2024197742A1 (fr) 2023-03-30 2023-03-30 Dispositif, procédé et support lisible par ordinateur pour des communications de liaison latérale

Country Status (1)

Country Link
WO (1) WO2024197742A1 (fr)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2021052473A1 (fr) * 2019-09-20 2021-03-25 华为技术有限公司 Procédé de communication et appareil de communication
US20210105055A1 (en) * 2019-10-03 2021-04-08 Hyukjin Chae Sidelink channel state information acquisition
US20210176767A1 (en) * 2019-12-05 2021-06-10 Qualcomm Incorporated Measurement for sidelink communications
EP4132153A1 (fr) * 2020-04-03 2023-02-08 Guangdong Oppo Mobile Telecommunications Corp., Ltd. Procédé de traitement d'informations de rétroaction de liaison latérale, dispositif terminal et dispositif de réseau

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2021052473A1 (fr) * 2019-09-20 2021-03-25 华为技术有限公司 Procédé de communication et appareil de communication
US20210105055A1 (en) * 2019-10-03 2021-04-08 Hyukjin Chae Sidelink channel state information acquisition
US20210176767A1 (en) * 2019-12-05 2021-06-10 Qualcomm Incorporated Measurement for sidelink communications
EP4132153A1 (fr) * 2020-04-03 2023-02-08 Guangdong Oppo Mobile Telecommunications Corp., Ltd. Procédé de traitement d'informations de rétroaction de liaison latérale, dispositif terminal et dispositif de réseau

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
PETER GAAL, QUALCOMM INCORPORATED: "Enhanced sidelink operation on FR2 licensed spectrum", 3GPP DRAFT; R1-2301416; TYPE DISCUSSION; NR_SL_ENH2-CORE, vol. RAN WG1, 17 February 2023 (2023-02-17), Athens, GR, pages 1 - 15, XP052248548 *
WEI ZENG, APPLE: "Discussion on Sidelink Operation on FR2", 3GPP DRAFT; R1-2301349; TYPE DISCUSSION; NR_SL_ENH2-CORE, vol. RAN WG1, 17 February 2023 (2023-02-17), Athens, GR, pages 1 - 11, XP052248484 *

Similar Documents

Publication Publication Date Title
WO2023123439A1 (fr) Procédé, dispositif et support lisible par ordinateur destinés aux communications
US20250168890A1 (en) Methods, devices, and computer readable medium for communication
WO2024087233A1 (fr) Procédé, dispositif et support d'enregistrement informatique de communication
US20240430942A1 (en) Method, device and computer readable medium for communications
WO2024000584A1 (fr) Procédé, dispositif et support lisible par ordinateur pour communication sur liaison latérale
WO2023240639A1 (fr) Procédé, dispositif et support lisible par ordinateur destinés aux communications
WO2023178695A1 (fr) Procédé, dispositif et support lisible par ordinateur destinés aux communications
WO2024197742A1 (fr) Dispositif, procédé et support lisible par ordinateur pour des communications de liaison latérale
US20250176016A1 (en) Method, device and computer readable medium for communications
WO2024192769A1 (fr) Dispositif, procédé et support lisible par ordinateur pour des communications de liaison latérale
WO2024229654A1 (fr) Dispositifs, procédés et support lisible par ordinateur pour des communications de liaison latérale
WO2025025001A1 (fr) Dispositifs, procédés et supports lisibles par ordinateur pour communication de liaison latérale
WO2025025011A1 (fr) Dispositifs, procédés et supports lisibles par ordinateur pour communication de liaison latérale
WO2024040449A1 (fr) Procédé, dispositif et support lisible par ordinateur destinés aux communications de liaison latérale
WO2024092846A1 (fr) Procédé, dispositif et support lisible par ordinateur pour des communications de liaison latérale
WO2024229838A1 (fr) Dispositif, procédé et support lisible par ordinateur pour des communications de liaison latérale
WO2024119312A1 (fr) Procédé, dispositif et support lisible par ordinateur pour communications de liaison latérale
WO2025208641A1 (fr) Dispositif terminal, procédé et support lisible par ordinateur pour communications par liaison latérale
WO2024212074A1 (fr) Dispositifs, procédés et supports lisibles par ordinateur pour détection et communication intégrées
WO2024254881A1 (fr) Dispositif, procédé et support lisible par ordinateur pour détection et communication intégrées
US20250279866A1 (en) Method, device and computer readable medium for communications
WO2024174256A1 (fr) Dispositifs et procédés de communication
WO2023245677A1 (fr) Procédé, dispositif et support lisible par ordinateur destinés aux communications de liaison latérale
WO2025175584A1 (fr) Dispositif, procédé et support lisible par ordinateur pour détection et communication intégrées
WO2025030505A1 (fr) Dispositif, procédé et support lisible par ordinateur pour des communications de liaison latérale

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 23929337

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE