WO2024207338A1 - Détermination améliorée de conflits de ressources au niveau d'un dispositif de réception pour une communication en liaison latérale en forme de faisceau - Google Patents

Détermination améliorée de conflits de ressources au niveau d'un dispositif de réception pour une communication en liaison latérale en forme de faisceau Download PDF

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Publication number
WO2024207338A1
WO2024207338A1 PCT/CN2023/086676 CN2023086676W WO2024207338A1 WO 2024207338 A1 WO2024207338 A1 WO 2024207338A1 CN 2023086676 W CN2023086676 W CN 2023086676W WO 2024207338 A1 WO2024207338 A1 WO 2024207338A1
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WO
WIPO (PCT)
Prior art keywords
resource
conflict
transmission
measurement
determination
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.)
Ceased
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PCT/CN2023/086676
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English (en)
Inventor
Daniel Medina
Torsten WILDSCHEK
Thomas Haaning Jacobsen
Renato Barbosa ABREU
Nuno Manuel KIILERICH PRATAS
Yong Liu
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.)
Nokia Shanghai Bell Co Ltd
Nokia Solutions and Networks Oy
Nokia Technologies Oy
Original Assignee
Nokia Shanghai Bell Co Ltd
Nokia Solutions and Networks Oy
Nokia Technologies Oy
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.)
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Publication date
Application filed by Nokia Shanghai Bell Co Ltd, Nokia Solutions and Networks Oy, Nokia Technologies Oy filed Critical Nokia Shanghai Bell Co Ltd
Priority to PCT/CN2023/086676 priority Critical patent/WO2024207338A1/fr
Priority to CN202380097770.XA priority patent/CN121040200A/zh
Publication of WO2024207338A1 publication Critical patent/WO2024207338A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H04W72/25—Control channels or signalling for resource management between terminals via a wireless link, e.g. sidelink
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/40—Resource management for direct mode communication, e.g. D2D or sidelink
    • 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

  • Various example embodiments of the present disclosure generally relate to the field of telecommunication and in particular, to methods, devices, apparatuses and computer readable storage media for enhanced determination of resource conflicts at a receiving device for beamformed sidelink (SL) communication.
  • SL sidelink
  • Wireless communication networks are widely deployed and can support various types of service applications for terminal devices.
  • Many communication schemes have been proposed to support the rapidly increasing data traffic.
  • an SL communication scheme has been proposed, where SL channels may be established between terminal devices in the wireless communication network and the terminal devices may exchange signaling and data with each other directly via the established SL channels.
  • the devices When performing SL communication, the devices transmit SL control information associated with SL data on a physical sidelink control channel (PSCCH) , and transmit the SL data on a physical sidelink shared channel (PSSCH) based on the SL control information.
  • PSCCH physical sidelink control channel
  • PSSCH physical sidelink shared channel
  • one device may need to communicate with more than one other device.
  • the other devices may be located within different areas with different communication directions, which causes that the communication resources/beams may conflict with each other. If so, the communication performance of the devices may be degraded. Thus, how to detect and handle such resource conflicts is desirable to be addressed.
  • a first device includes at least one processor; and at least one memory storing instructions that, when executed by the at least one processor, cause the first device at least to: determine a first resource reserved for a first transmission from a second device to the first device and a first beam of the first device for communication with the second device; determine a second resource associated with a second transmission from a third device to the first device and a second beam of the first device for communication with the third device; determine a resource conflict between the second resource and the first resource based on at least one of: whether the first beam differs from the second beam, a first measurement associated with the first beam and the third device, and a second measurement associated with the second beam and the second device.
  • a method in a second aspect of the present disclosure, includes: at a first device, determining a first resource reserved for a first transmission from a second device to the first device and a first beam of the first device for communication with the second device; determining a second resource associated with a second transmission from a third device to the first device and a second beam of the first device for communication with the third device; determining a resource conflict between the second resource and the first resource based on at least one of: whether the first beam differs from the second beam, a first measurement associated with the first beam and the third device, and a second measurement associated with the second beam and the second device.
  • the first apparatus includes means for determining a first resource reserved for a first transmission from a second device to the first device and a first beam of the first device for communication with the second device; means for determining a second resource associated with a second transmission from a third device to the first device and a second beam of the first device for communication with the third device; means for determining a resource conflict between the second resource and the first resource based on at least one of: whether the first beam differs from the second beam, a first measurement associated with the first beam and the third device, and a second measurement associated with the second beam and the second device.
  • a computer readable medium includes instructions stored thereon for causing an apparatus to perform at least the method according to the second aspect.
  • FIG. 1 illustrates an example communication environment in which example embodiments of the present disclosure can be implemented
  • FIG. 2A illustrates an example communication scenario
  • FIG. 2B illustrates of a block of an example of conflict between two resources (r1, r2) as a result of directional PSFCH transmission
  • FIG. 2C illustrates an example of SL slot configuration including PSFCH resources for HARQ feedback
  • FIG. 2D illustrates another example communication scenario
  • FIG. 3 illustrates a signaling chart illustrating a process for communication according to some embodiments of the present disclosure
  • FIG. 4 illustrates a signaling chart illustrating a process for communication according to some embodiments of the present disclosure
  • FIG. 5 illustrates a signaling chart illustrating a process for communication according to some embodiments of the present disclosure
  • FIG. 6 illustrates a flowchart of a method implemented at a first device according to some example embodiments of the present disclosure
  • FIG. 7 illustrates a simplified block diagram of a device that is suitable for implementing example embodiments of the present disclosure.
  • FIG. 8 illustrates a block diagram of an example computer readable medium in accordance with some example embodiments of the present disclosure.
  • references in the present disclosure to “one embodiment, ” “an embodiment, ” “an example embodiment, ” and the like indicate that the embodiment described may include a particular feature, structure, or characteristic, but it is not necessary that every embodiment includes the particular feature, structure, or characteristic. Moreover, such phrases are not necessarily referring to the same embodiment. Further, when a particular feature, structure, or characteristic is described in connection with an embodiment, it is submitted that it is within the knowledge of one skilled in the art to affect such feature, structure, or characteristic in connection with other embodiments whether or not explicitly described.
  • first, ” “second” and the like may be used herein to describe various elements, these elements should not be limited by these terms. These terms are only used to distinguish one element from another. For example, a first element could be termed a second element, and similarly, a second element could be termed a first element, without departing from the scope of example embodiments.
  • the term “and/or” includes any and all combinations of one or more of the listed terms.
  • performing a step “in response to A” does not indicate that the step is performed immediately after “A” occurs and one or more intervening steps may be included.
  • circuitry may refer to one or more or all of the following:
  • circuitry also covers an implementation of merely a hardware circuit or processor (or multiple processors) or portion of a hardware circuit or processor and its (or their) accompanying software and/or firmware.
  • circuitry also covers, for example and if applicable to the particular claim element, a baseband integrated circuit or processor integrated circuit for a mobile device or a similar integrated circuit in server, a cellular network device, or other computing or network device.
  • the term “communication network” refers to a network following any suitable communication standards, such as New Radio (NR) , Long Term Evolution (LTE) , LTE-Advanced (LTE-A) , Wideband Code Division Multiple Access (WCDMA) , High-Speed Packet Access (HSPA) , Narrow Band Internet of Things (NB-IoT) and so on.
  • NR New Radio
  • LTE Long Term Evolution
  • LTE-A LTE-Advanced
  • WCDMA Wideband Code Division Multiple Access
  • HSPA High-Speed Packet Access
  • NB-IoT Narrow Band Internet of Things
  • the communications between a terminal device and a network device in the communication network may be performed according to any suitable generation communication protocols, including, 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, and/or any other protocols either currently known or to be developed in the future.
  • suitable generation communication protocols including, 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, and/or any other protocols either currently known or to be developed in the future.
  • Embodiments of the present disclosure may be applied in various communication systems. Given the rapid development in communications, there will of course also be future type communication technologies and systems with which the present disclosure may be embodied. It should not be seen as limiting the scope of the present disclosure to only the aforementioned system
  • the term “network device” refers to a node in a communication network via which a terminal device accesses the network and receives services therefrom.
  • the network device may refer to a base station (BS) or an access point (AP) , for example, a node B (NodeB or NB) , an evolved NodeB (eNodeB or eNB) , an NR NB (also referred to as a gNB) , a Remote Radio Unit (RRU) , a radio header (RH) , a remote radio head (RRH) , a relay, an Integrated Access and Backhaul (IAB) node, a low power node such as a femto, a pico, a non-terrestrial network (NTN) or non-ground network device such as a satellite network device, a low earth orbit (LEO) satellite and a geosynchronous earth orbit (GEO) satellite, an aircraft network device, and so forth, depending on the applied terminology and technology
  • radio access network (RAN) split architecture includes a Centralized Unit (CU) and a Distributed Unit (DU) at an IAB donor node.
  • An IAB node includes a Mobile Terminal (IAB-MT) part that behaves like a UE toward the parent node, and a DU part of an IAB node behaves like a base station toward the next-hop IAB node.
  • IAB-MT Mobile Terminal
  • terminal device refers to any end device that may be capable of wireless communication.
  • a terminal device may also be referred to as a communication device, user equipment (UE) , a Subscriber Station (SS) , a Portable Subscriber Station, a Mobile Station (MS) , or an Access Terminal (AT) .
  • UE user equipment
  • SS Subscriber Station
  • MS Mobile Station
  • AT Access Terminal
  • the terminal device may include, but not limited to, a mobile phone, a cellular phone, a smart phone, voice over IP (VoIP) phones, wireless local loop phones, a tablet, a wearable terminal device, a personal digital assistant (PDA) , portable computers, desktop computer, image capture terminal devices such as digital cameras, gaming terminal devices, music storage and playback appliances, vehicle-mounted wireless terminal devices, wireless endpoints, mobile stations, laptop-embedded equipment (LEE) , laptop-mounted equipment (LME) , USB dongles, smart devices, wireless customer-premises equipment (CPE) , an Internet of Things (loT) device, a watch or other wearable, a head-mounted display (HMD) , a vehicle, a drone, a medical device and applications (e.g., remote surgery) , an industrial device and applications (e.g., a robot and/or other wireless devices operating in an industrial and/or an automated processing chain contexts) , a consumer electronics device, a device operating on commercial and/
  • the terminal device may also correspond to a Mobile Termination (MT) part of an IAB node (e.g., a relay node) .
  • MT Mobile Termination
  • IAB node e.g., a relay node
  • the terms “terminal device” , “communication device” , “terminal” , “user equipment” and “UE” may be used interchangeably.
  • resource may refer to any resource for performing a communication, for example, a communication between a terminal device and a network device, such as a resource in time domain, a resource in frequency domain, a resource in space domain, a resource in code domain, or any other resource enabling a communication, and the like.
  • a resource in both frequency domain and time domain will be used as an example of a transmission resource for describing some example embodiments of the present disclosure. It is noted that example embodiments of the present disclosure are equally applicable to other resources in other domains.
  • beam , “antenna panel” and “panel” may be used interchangeably.
  • SL channels may be established between terminal devices in the wireless communication network and the terminal devices may exchange signaling and data with each other directly via the established SL channels.
  • SL enhancements are being studied, especially including SL operation in FR2 spectrum.
  • beam management in FR2 licensed spectrum considers sidelink unicast communication only.
  • IUC scheme 1 the IUC information sent from a first UE to a second UE is a set of resources preferred or non-preferred for the transmission of the second UE.
  • IUC scheme 2 the IUC information is an indication of an expected/potential resource conflict.
  • one device may need to communicate with more than one other device.
  • the other devices may be located within different areas with different communication directions, which causes that the communication resources/beams may conflict with each other. If so, the communication performance of the devices may be degraded. Thus, how to detect and handle such resource conflicts is desirable to be addressed.
  • the first device determines a first resource reserved for a first transmission from a second device (which is a transmitter UE) to the first device and a first beam of the first device for communication with the second device, and further determines a second resource associated with a second transmission from a third device (which is another transmitter UE) to the first device and a second beam of the first device for communication with the third device. Then, the first device determines a resource conflict between the second resource and the first resource based on at least one of: whether the first beam differs from the second beam, a first measurement associated with the first beam and the third device, and a second measurement associated with the second beam and the second device.
  • the first device i.e., receiver UE
  • the other devices i.e., transmitter UEs
  • FIG. 1 illustrates an example communication environment 100 in which example embodiments of the present disclosure can be implemented.
  • the communication network 100 includes a first device 110, a second device 120, and a third device 130.
  • the SL communication is supported in communication network 100.
  • the first device 110 may receive transmissions from the second device 120 and the third device 130.
  • the first device 110 may also be referred to as “the receiver UE”
  • the second device 120 may also be referred to as “the (first) transmitter UE”
  • the third device 130 may also be referred to as “the (second) transmitter UE” .
  • Communications in the communication environment 100 may be implemented according to any proper communication protocol (s) , including, but not limited to, cellular communication protocols of the first generation (1G) , the second generation (2G) , the third generation (3G) , the fourth generation (4G) , the fifth generation (5G) , the sixth generation (6G) , and the like, wireless local network communication protocols such as Institute for Electrical and Electronics Engineers (IEEE) 802.11 and the like, and/or any other protocols currently known or to be developed in the future.
  • s including, but not limited to, cellular communication protocols of the first generation (1G) , the second generation (2G) , the third generation (3G) , the fourth generation (4G) , the fifth generation (5G) , the sixth generation (6G) , and the like, wireless local network communication protocols such as Institute for Electrical and Electronics Engineers (IEEE) 802.11 and the like, and/or any other protocols currently known or to be developed in the future.
  • IEEE Institute for Electrical and Electronics Engineers
  • the communication may utilize any proper wireless communication technology, including but not limited to: Code Division Multiple Access (CDMA) , Frequency Division Multiple Access (FDMA) , Time Division Multiple Access (TDMA) , Frequency Division Duplex (FDD) , Time Division Duplex (TDD) , Multiple-Input Multiple-Output (MIMO) , Orthogonal Frequency Division Multiple (OFDM) , Discrete Fourier Transform spread OFDM (DFT-s-OFDM) and/or any other technologies currently known or to be developed in the future.
  • CDMA Code Division Multiple Access
  • FDMA Frequency Division Multiple Access
  • TDMA Time Division Multiple Access
  • FDD Frequency Division Duplex
  • TDD Time Division Duplex
  • MIMO Multiple-Input Multiple-Output
  • OFDM Orthogonal Frequency Division Multiple
  • DFT-s-OFDM Discrete Fourier Transform spread OFDM
  • FIG. 2A is an example communication scenario 200.
  • the second device 120 and the third device 130 are performing sidelink communication with a same first device 110.
  • FIG. 2B illustrates a block 220 of an example conflict between two resources as a result of directional or beamformed PSFCH transmission.
  • a resource reserved for a first transmission from the second device 120 to the first device 110 is referred to as the first resource and represented as r1
  • a resource associated with a second transmission from the third device 130 to the first device is referred to as the second resource and represented as r2.
  • data is received by the first device 110 from the second device 120 and the third device 130 using directional or beamformed reception (i.e., not omnidirectionally) .
  • the first device 110 may need to receive PSCCH/PSSCH from the second device 120 using a first antenna panel or beam (the beam (or panel) used by the first device 110 for communicating with the second device 120 is hereafter referred to as a first beam and represented as b1) and receive PSCCH/PSSCH from the third device 130 using a second antenna panel or beam (the beam (or panel) used by the first device 110 for communicating with the third device 130 is hereafter referred to as the second beam and represented as b2) .
  • a first device 110 that is not capable of receiving simultaneously on multiple antenna panels or beams (b1, b2) may need to drop one of the PSCCH/PSSCH receptions (e.g., that which has lower priority) , with a a consequent degradation in performance.
  • the receiver UE may need to provide HARQ feedback for the SL data transmissions.
  • PSFCH for sidelink communication is specified to carry HARQ feedback over the sidelink (at physical layer) from a UE which is an intended recipient of a PSCCH/PSSCH transmission (henceforth a receiver UE) to the UE which performed the transmission (henceforth a transmitter UE) .
  • PSFCH transmits a Zadoff-Chu sequence in one PRB repeated over two OFDM symbols (the first of which can be used for AGC) near the end of the sidelink resource in a slot.
  • FIG. 2C illustrates an example of a SL slot configuration 260 including PSFCH resources for HARQ feedback, where an example of a slot format of PSCCH, PSSCH, and PSFCH is provided.
  • the Zadoff-Chu sequence as base sequence is (pre-) configured per sidelink resource pool.
  • the time resources for PSFCH are (pre-) configured to occur once in every 1, 2, or 4 slots.
  • the HARQ feedback resource i.e., PSFCH
  • PSFCH is derived from the resource location of PSCCH/PSSCH.
  • the feedback from the first device 110 may be transmitted to the second device 120 or the third device 130 using directional or beamformed transmission (i.e., not omnidirectionally) .
  • the first device 110 may need to transmit PSFCH (carrying HARQ feedback) to the second device 120 on the first beam (b1) and transmit PSFCH to the third device 130 on the second beam (b2) .
  • PSFCH carrier HARQ feedback
  • the second device 120 and the third device 130 may select resources (r1, r2) for transmission to the same first device 110 in such a way that the associated PSFCH occasions (P1, P2) for transmission of feedback by the first device 110 to each of the second device 120 and the third device 130 are the same. If so, a first device 110 that is not capable of transmitting simultaneously on multiple antenna panels or beams (b1, b2) may need to drop one of the PSFCH transmissions (e.g., that which has lower priority) –with a consequent degradation in performance, e.g., due to unnecessary HARQ retransmissions as a result of missing feedback.
  • FIG. 2D illustrates another example communication scenario 280.
  • one beam (b2) may be used to receive both PSCCH/PSSCHs (or transmit both PSFCHs) .
  • the PSCCH/PSSCH RX beams may overlap in space.
  • the beams (b1, b2) may not be identical, it may be possible to use one of them (here, b2) to receive both PSCCH/PSSCHs (or transmit both PSFCHs) (albeit with some cost in terms of received signal strength for the PSCCH/PSSCH reception from, or PSFCH transmission to, the second device 120, in this example) .
  • the below example embodiments may at least address the problem of a receiver UE being unable to receive PSCCH/PSSCH (or transmit PSFCH) simultaneously on multiple antenna panels or beams (b1, b2) , by enabling the receiver UE to recommend PSCCH/PSSCH resources avoiding simultaneous PSCCH/PSSCH reception (or PSFCH transmission) on multiple antenna panels or beams of the receiver UE.
  • a receiver UE determines preferred or non-preferred resources for PSCCH/PSSCH transmission by a respective transmitter UE (IUC scheme 1) , or how it determines an expected/potential resource conflict (IUC scheme 2) on a PSCCH/PSSCH resource reserved by the respective transmitter UE.
  • IUC scheme 1 preferred or non-preferred resources for PSCCH/PSSCH transmission by a respective transmitter UE
  • IUC scheme 2 an expected/potential resource conflict
  • the receiver UE may expect to receive PSCCH/PSSCH from a first transmitter UE in a first radio resource (r1) using a first antenna panel or beam (b1) of the receiver UE.
  • the receiver UE may exclude (or deprioritize) candidate resources overlapping in time with the first radio resource (r1) if a second antenna panel or beam (b2) of the receiver UE to be used for receiving PSCCH/PSSCH from the second transmitter UE) does not coincide with the first antenna panel or beam (b1) .
  • the receiver UE may indicate such candidate resources as non-preferred.
  • the receiver UE may expect to transmit PSFCH to a first transmitter UE on a first PSFCH occasion (P1) using a first antenna panel or beam (b1) of the receiver UE.
  • the receiver UE may exclude (or deprioritize) candidate resources associated with said first PSFCH occasion (P1) if a second antenna panel or beam (b2) of the receiver UE to be used for transmitting PSFCH to the second transmitter UE does not coincide with the first antenna panel or beam (b1) .
  • the receiver UE may indicate such candidate resources as non-preferred.
  • the receiver UE may indicate an expected/potential resource conflict to the transmitter UEs.
  • FIG. 3 illustrates a signaling flow 300 of communication in accordance with some embodiments of the present disclosure.
  • the signaling flow 300 will be discussed with reference to FIGS. 1, and 2A to 2D, for example, by using the first device 110, the second device 120 and the third device 130.
  • the first device 110 is a receiving terminal device (i.e., a receiver UE)
  • the second device 120 is a first transmitting terminal device (i.e., the first transmitter UE)
  • the third device 130 is a second transmitting terminal device (i.e., the second transmitter UE) .
  • the first device 110 determines 315 a first resource (r1) reserved for a first transmission from a second device 120 to the first device 110 and a first beam (b1) of the first device 110 for communication with the second device 120.
  • the first device 110 may receive 305 an indication of the first resource from the second device 120.
  • the first device 110 determines 330 a second resource associated with a second transmission from a third device 130 to the first device 110 and a second beam (b2) of the first device 110 for communication with the third device 130.
  • the second resource associated with the second transmission may refer to a resource reserved for the second transmission, or a candidate resource being considered for the second transmission.
  • the first device 110 may receive 320 an indication of the second resource from the third device 130, or may receive 320 a request from the third device 130 for a set of recommended resources for the second transmission (e.g., a preferred resource set) and determine the second resource at least based on the request from the third device 130.
  • a set of recommended resources for the second transmission e.g., a preferred resource set
  • the first device 110 determines 335 a resource conflict between the second resource and the first resource based on at least one of: whether the first beam (b1) differs from the second beam (b2) , a first measurement associated with the first beam (b1) and the third device 130, and a second measurement associated with the second beam (b2) and the second device 120.
  • the first device 110 may determine that the second resource is in conflict with the first resource.
  • the first measurement includes at least one of a received power (e.g., RSRP) , a signal-to-noise ratio (SNR) , or a signal-to-interference-plus-noise ratio (SINR) , of a first signal from the third device 130 determined using the first beam (b1) .
  • the second measurement includes at least one of a received power (e.g., RSRP) , a signal-to-noise ratio (SNR) , or a signal-to-interference-plus-noise ratio (SINR) , of a second signal from the second device 120 determined using the second beam (b2) .
  • the resource conflict is determined at least in accordance with a determination that the second beam (b2) differs from (i.e., is not the same as) the first beam (b1) .
  • the resource conflict is determined further based on at least one of: overlap information of the first resource and the second resource, a first occasion for transmission of feedback to the second device 120 and a second occasion for transmission of feedback to the third device 130, and a maximum number of simultaneous beams of the first device, as will be described in detail below.
  • the first device 110 may determine whether the second resource overlaps in time with the first resource, and if the second resource overlaps in time with the first resource, the first device 110 may determine that the second resource is in conflict with the first resource if at least one of: the second beam (b2) differs from the first beam (b1) , the first measurement is below a first threshold, and the second measurement is below a second threshold.
  • the first device 110 may determine a first occasion for transmission of feedback to the second device 120 based on the first resource and a second occasion for transmission of feedback to the third device 130 based on the second resource, and if the first occasion is the same as the second occasion, the first device 110 may determine that the second resource is in conflict with the first resource if at least one of: the second beam (b2) differs from the first beam (b1) , the first measurement is below a first threshold, and the second measurement is below a second threshold.
  • the first device 110 may determine a number of devices that are communicating with the first device 110. If the determined number is equal to a maximum number of simultaneous beams of the first device 110, the first device 110 may determine that the second resource is in conflict with the first resource if at least one of: the second beam (b2) differs from the first beam (b1) , the first measurement is below a first threshold, and the second measurement is below a second threshold.
  • the first device may transmit 340 control information indicating the determined resource conflict to the second device 120 or the third device 130.
  • the first device 110 may transmit control information indicating that the second resource is in conflict to the third device 130. Accordingly, if the second resource has a higher priority than the first resource, the first device 110 may transmit control information indicating that the first resource is in conflict to the second device 120.
  • the first device 110 may determine 360 a set of recommended resources for the second transmission at least by excluding the second resource from a set of candidate resources for the third device 130, and may transmit 365 coordination information indicating the set of recommended resources to the third device 130.
  • the first device 110 may determine, from a set of candidate resources for the third device 130, a set of non-recommended resources for the second transmission including candidate resources associated with a first occasion for transmission of feedback to the second device 120. Then the first device 110 may further determine 360 a set of recommended resources for the second transmission at least by excluding the set of non-recommended resources from the set of candidate resources for the third device 130; and transmit 365 coordination information indicating at least one of the set of recommended resources or the set of non-recommended resources to the third device 130.
  • the first device 110 may transmit coordination information to the second device 120 indicating the first resource is non-recommended for the first transmission. In some other example embodiments, if the second resource is in conflict with the first resource, the first device 110 may transmit coordination information to the third device 130 indicating that the second resource is non-recommended for the second transmission.
  • the above text mainly describes the perspective of the first device 110. Obviously, the second device 120 and the third device 130 should perform the corresponding operations. In the following, some example embodiments for the second device 120 and the third device 130 are described.
  • the second device 120 transmits 305, to the first device 110, an indication of a first resource for a first transmission from the second device 120 to the first device 110.
  • the second device 120 receives 355 conflict information indicating that the first resource is in conflict with a second resource associated with a second transmission from a third device 130 to the first device 110, wherein the second resource has a higher priority than the first resource.
  • the third device 130 may transmit 320 a request for a set of recommended resources for a second transmission from the third device 130 to the first device 110.
  • the third device 130 receives 370 coordination information indicating the set of recommended resources from the first device 110, wherein the set of recommended resources are at least determined by excluding a second resource associated with the second transmission (e.g., a candidate resource determined for the second transmission based on the request) from a set of candidate resources for the third device 130, in accordance with a determination that the second resource is in conflict with a first resource for a first transmission from a second device 120 to the first device 110.
  • a second resource associated with the second transmission e.g., a candidate resource determined for the second transmission based on the request
  • the third device 130 may receive 345, from the first device 110, conflict information indicating that the second resource is in conflict with a first resource associated with a first transmission from a second device 120 to the first device 110, wherein the first resource has a higher priority than the second resource.
  • FIG. 4 illustrates a signaling flow 400 of communication in accordance with some embodiments of the present disclosure.
  • the signaling flow 400 will be discussed with reference to FIG. 1 and FIGS. 2A to 2D, for example, by using the first device 110, the second device 120 and the third device 130.
  • the first device 110 is a receiving terminal device
  • the second device 120 is a first transmitting terminal device
  • the third device 130 is a second transmitting terminal device.
  • the (non-) preferred resource set may be determined by the first device 110. Additionally, a preferred resource set is indicated excluding the determined conflicting resource.
  • a first device 110 may determine a first resource (r1) as reserved for transmission by the second device 120 (the first transmitter device) to the first device 110.
  • the first device 110 may determine the first resource (r1) based on a first received SCI (e.g., 1st-stage and 2nd-stage SCI) transmitted 410 by the second device 120 indicating the first resource (r1) as reserved.
  • a first received SCI e.g., 1st-stage and 2nd-stage SCI
  • the first device 110 may determine 420 a corresponding first PSFCH occasion (P1) and first antenna panel or beam (b1) of the first device 110 for transmission of feedback to the second device 120.
  • the first device 110 may receive 430 an explicit request for coordination information from the third device 130 (i.e., the second transmitter device) for requesting a preferred resource set for transmission to the first device 110.
  • the third device 130 i.e., the second transmitter device
  • the first device 110 may determine 440 a set of candidate resources for transmission by the third device 130. As shown in FIG. 4, the first device 110 may determine candidate resources (e.g., r2) in slots associated with the first PSFCH occasion (P1) as being in conflict with the first resource (r1) if a corresponding second antenna panel or beam (b2) of the first device 110 to be used for transmission of feedback to the third device 130 differs from the first antenna panel or beam (b1) . Further, such conflicting candidate resources may be excluded or deprioritized from the preferred resource set determined by the first device 110.
  • candidate resources e.g., r2
  • P1 PSFCH occasion
  • b2 second antenna panel or beam
  • conflicting candidate resources may be excluded or deprioritized from the preferred resource set determined by the first device 110.
  • the first device 110 may determine 450 preferred resources for receiving the transmission from the third device 130 excluding the determined conflicting resource from the set.
  • the first device 110 may indicate 460 the preferred resources to the third device 130.
  • the first device 110 may indicate the conflicting candidate resources as non-preferred resources for transmission by the third device 130.
  • the first device 110 may indicate to the second device 120 that the first resource (r1) is non-preferred.
  • the first device 110 may further use one or more beam measurements (e.g., RSRP, SINR, etc. ) to determine whether a second resource (r2) is in conflict with the first resource (r1) as discussed below.
  • beam measurements e.g., RSRP, SINR, etc.
  • the first device 110 may determine a first beam measurement (e.g., RSRP1, 2 SINR1, 2, etc. ) associated with the first antenna panel or beam (b1) and the third device 130. If the first beam measurement (e.g., RSRP1, 2, SINR1, 2, etc. ) is above a threshold, the first device 110 may determine that the first antenna panel or beam (b1) is adequate for receiving PSCCH/PSSCH from, or transmitting PSFCH to, both the second device 120 and the third device 130. In such cases, the second resource (r2) may not be determined to be in conflict with the first resource (r1) .
  • a first beam measurement e.g., RSRP1, 2 SINR1, 2, etc.
  • the first device 110 may determine a second beam measurement (e.g., RSRP2, 1 SINR2, 1, etc. ) associated with the second antenna panel or beam (b2) and the second device 120. If the second beam measurement (e.g., RSRP2, 1, SINR2, 1, etc. ) is above a threshold, the first device 110 may determine that the second antenna panel or beam (b2) is adequate for receiving PSCCH/PSSCH from, or transmitting PSFCH to, both the second device 120 and the third device 130 (refer to FIG. 2D) . In such cases, the second resource (r2) may not be determined to be in conflict with the first resource (r1) .
  • a second beam measurement e.g., RSRP2, 1 SINR2, 1, etc.
  • the first device 110 may determine a maximum number of simultaneous antenna panels or beams (N) that may be used for simultaneous PSCCH/PSSCH reception or simultaneous PSFCH transmission.
  • FIG. 5 illustrates a signaling flow 500 of communication in accordance with some embodiments of the present disclosure.
  • the signaling flow 300 will be discussed with reference to FIG. 1 and FIGS. 2A to 2D, for example, by using the first device 110, the second device 120 and the third device 130.
  • the first device 110 is a receiving terminal device
  • the second device 120 is a first transmitting terminal device
  • the third device 130 is a second transmitting terminal device.
  • a resource conflict indication may be transmitted by the first device 110.
  • a first device 110 may determine a first resource (r1) as reserved for transmission by the second device 120 (the first transmitter device) to the first device 110.
  • the first device 110 may determine the first resource (r1) based on a first received SCI (e.g., 1st-stage and 2nd-stage SCI) transmitted 510 by the second device 120 indicating the first resource (r1) as reserved.
  • a first received SCI e.g., 1st-stage and 2nd-stage SCI
  • the first device 110 may determine 520 a corresponding first PSFCH occasion (P1) and first antenna panel or beam (b1) of the first device 110 for transmission of feedback to the second device 120.
  • a first device 110 may determine a second resource (r2) as reserved for transmission by a third device 130 to the first device 110.
  • the first device 110 may determine the second resource (r2) based on a second received SCI (e.g., 1st-stage and 2nd-stage SCI) transmitted 530 by the third device 130 indicating the second resource (r2) as reserved.
  • the first device 110 determines 540 a corresponding second PSFCH occasion (P2) and second antenna panel or beam (b2) of the first device 110 for transmission of feedback to the third device 130.
  • the first device 110 may further determine an expected/potential resource conflict if P1 coincides with P2 and b1 does not coincide with b2. Then, if r1 has a higher (or equal) priority than r2, the first device 110 may indicate the resource conflict to the third device 130. Accordingly, if r1 has a lower (or equal) priority than r2, the first device 110 may indicate the resource conflict to the second device 120.
  • the first device 110 indicates 560-1, 560-2 an expected/potential resource conflict to the second device 120 or the third device 130 (e.g., whichever has lower priority) .
  • the second device 120 or the third device 130 may trigger resource reselection to prevent the conflict.
  • a conflict between the first reserved resource (r1) and the second reserved resource (r2) may not exist initially (e.g., at the time of initial resource reservation for periodic transmission) but may arise subsequently as a result of beam re-alignment.
  • the first antenna panel or beam (b1) may initially coincide with the second antenna panel or beam (b2) , but at a later time (e.g., due to UE relative mobility) this may no longer be the case, thus causing a conflict.
  • the first device 110 when the first device 110 is capable of receiving or transmitting simultaneously on multiple antenna panels or beams (b1, b2) , it may initially be able to perform PSCCH/PSSCH reception or PSFCH transmission in multiple directions. However, due to internal prioritization, one of the antenna panels or beams (b1, b2) may need to be used for communication over the Uu interface (e.g., in another carrier) and therefore the first device 110 may no longer be able to receive PSCCH/PSSCH from, or transmit PSFCH to, both the second device 120 and the third device 130. In this case, the first device 110 may indicate the resource conflict to either the second device 120 or the third device 130, e.g., depending on which one has lower priority.
  • the present disclosure is beneficial whenever PSCCH/PSSCH is received, or PSFCH is transmitted, directionally by UEs that are not capable of receiving (or transmitting) simultaneously on multiple antenna panels or beams. Specifically, by selecting resources for PSCCH/PSSCH transmission in such a way that simultaneous PSCCH/PSSCH reception, or PSFCH transmission, on multiple antenna panels or beams is avoided, fewer SL transmissions will be dropped or missed by the devices, thus enhancing link-level and system-level performance.
  • FIG. 6 shows a flowchart of an example method 600 implemented at a first device in accordance with some example embodiments of the present disclosure. For the purpose of discussion, the method 600 will be described from the perspective of the first device 110 in FIG. 1.
  • the first device 110 determines a first resource reserved for a first transmission from a second device 120 to the first device 110 and a first beam of the first device 110 for communication with the second device 120.
  • the first device 110 determines a second resource associated with a second transmission from a third device 130 to the first device 110 and a second beam of the first device 110 for communication with the third device 130.
  • the first device 110 determines a resource conflict between the second resource and the first resource based on at least one of: whether the first beam differs from the second beam, a first measurement associated with the first beam and the third device 130, and a second measurement associated with the second beam and the second device 120.
  • the resource conflict is determined at least in accordance with a determination that the second beam differs from the first beam.
  • the resource conflict is determined further based on at least one of: overlap information of the first resource and the second resource, a first occasion for transmission of feedback to the second device 120 and a second occasion for transmission of feedback to the third device 130, and a maximum number of simultaneous beams of the first device 110.
  • the method 600 further includes: determining whether the second resource overlaps in time with the first resource; and in accordance with a determination that the second resource overlaps in time with the first resource, determining that the second resource is in conflict with the first resource if at least one of: the second beam differs from the first beam, the first measurement is below a first threshold, and the second measurement is below a second threshold.
  • the method 600 further includes: determining a first occasion for transmission of feedback to the second device 120 based on the first resource and a second occasion for transmission of feedback to the third device 130 based on the second resource; in accordance with a determination that the first occasion is the same as the second occasion, determining that the second resource is in conflict with the first resource if at least one of: the second beam differs from the first beam, the first measurement is below a first threshold, and the second measurement is below a second threshold.
  • the method 600 further includes: determining a number of devices that are communicating with the first device 110; and in accordance with a determination that the determined number is equal to a maximum number of simultaneous beams of the first device 110, determining that the second resource is in conflict with the first resource if at least one of: the second beam differs from the first beam, the first measurement is below a first threshold, and the second measurement is below a second threshold.
  • the first measurement includes at least one of a received power, a signal-to-noise ratio, or a signal-to-interference-plus-noise ratio, of a first signal from the third device 130 determined using the first beam
  • the second measurement includes at least one of a received power, a signal-to-noise ratio, or a signal-to-interference-plus-noise ratio, of a second signal from the second device 120 determined using the second beam.
  • the method 600 further includes: in accordance with a determination that the second resource is in conflict with the first resource, transmitting control information indicating the determined resource conflict to the second device 120 or the third device 130.
  • the method 600 further includes: in accordance with a determination that the first resource has a higher priority than the second resource, transmitting, to the third device 130, control information indicating that the second resource is in conflict; and in accordance with a determination that the second resource has a higher priority than the first resource, transmitting, to the second device 120, control information indicating that the first resource is in conflict.
  • the method 600 further includes: in accordance with a determination that the second resource is in conflict with the first resource, determining a set of recommended resources for the second transmission at least by excluding the second resource from a set of candidate resources for the third device 130; and transmitting, to the third device 130, coordination information indicating the set of recommended resources.
  • the method 600 further includes: in accordance with a determination that the second resource is in conflict with the first resource, transmitting, to the second device 120, coordination information indicating the first resource is non-recommended for the first transmission, or transmitting, to the third device 130, coordination information indicating that the second resource is non-recommended for the second transmission.
  • a first apparatus capable of performing any of the method 600 may include means for performing the respective operations of the method 600.
  • the means may be implemented in any suitable form.
  • the means may be implemented in a circuitry or software module.
  • the first apparatus may be implemented as or included in the first device 110 in FIG. 1.
  • the first apparatus includes means for determining a first resource reserved for a first transmission from a second device 120 to the first device 110 and a first beam of the first device 110 for communication with the second device 120; means for determining a second resource associated with a second transmission from a third device 130 to the first device 110 and a second beam of the first device 110 for communication with the third device 130; means for determining a resource conflict between the second resource and the first resource based on at least one of: whether the first beam differs from the second beam, a first measurement associated with the first beam and the third device 130, and a second measurement associated with the second beam and the second device 120.
  • the first apparatus further includes: means for determining whether the second resource overlaps in time with the first resource; and means for in accordance with a determination that the second resource overlaps in time with the first resource, determining that the second resource is in conflict with the first resource if at least one of: the second beam differs from the first beam, the first measurement is below a first threshold, and the second measurement is below a second threshold.
  • the first apparatus further includes: means for determining a number of devices that are communicating with the first device 110; and means for in accordance with a determination that the determined number is equal to a maximum number of simultaneous beams of the first device 110, determining that the second resource is in conflict with the first resource if at least one of: the second beam differs from the first beam, the first measurement is below a first threshold, and the second measurement is below a second threshold.
  • the first apparatus further includes: means for in accordance with a determination that the second resource is in conflict with the first resource, transmitting control information indicating the determined resource conflict to the second device 120 or the third device 130.
  • the first apparatus further includes: means for in accordance with a determination that the first resource has a higher priority than the second resource, transmitting, to the third device 130, control information indicating that the second resource is in conflict; and means for in accordance with a determination that the second resource has a higher priority than the first resource, transmitting (350) , to the second device 120, control information indicating that the first resource is in conflict.
  • the first apparatus further includes: means for in accordance with a determination that the second resource is in conflict with the first resource, determining a set of recommended resources for the second transmission at least by excluding the second resource from a set of candidate resources for the third device 130; and means for transmitting, to the third device 130, coordination information indicating the set of recommended resources.
  • the first apparatus further includes: in accordance with a determination that the second resource is in conflict with the first resource, means for transmitting, to the second device 120, coordination information indicating the first resource is non-recommended for the first transmission, or means for transmitting, to the third device 130, coordination information indicating that the second resource is non-recommended for the second transmission.
  • the first apparatus further includes means for performing other operations in some example embodiments of the method 600 or the first device 110.
  • the means includes at least one processor; and at least one memory storing instructions that, when executed by the at least one processor, cause the performance of the first apparatus.
  • FIG. 7 is a simplified block diagram of a device 700 that is suitable for implementing example embodiments of the present disclosure.
  • the device 700 may be provided to implement a communication device, for example, the first device 110 or the second device 120 as shown in FIG. 1.
  • the device 700 includes one or more processors 710, one or more memories 720 coupled to the processor 710, and one or more communication modules 740 coupled to the processor 710.
  • the communication module 740 is for bidirectional communications.
  • the communication module 740 has one or more communication interfaces to facilitate communication with one or more other modules or devices.
  • the communication interfaces may represent any interface that is necessary for communication with other network elements.
  • the communication module 740 may include at least one antenna.
  • the processor 710 may be of any type suitable to the local technical network and may include one or more of the following: general purpose computers, special purpose computers, microprocessors, digital signal processors (DSPs) and processors based on multicore processor architecture, as non-limiting examples.
  • the device 700 may have multiple processors, such as an application specific integrated circuit chip that is slaved in time to a clock which synchronizes the main processor.
  • the memory 720 may include one or more non-volatile memories and one or more volatile memories.
  • the non-volatile memories include, but are not limited to, a Read Only Memory (ROM) 724, an electrically programmable read only memory (EPROM) , a flash memory, a hard disk, a compact disc (CD) , a digital video disk (DVD) , an optical disk, a laser disk, and other magnetic storage and/or optical storage.
  • Examples of the volatile memories include, but are not limited to, a random access memory (RAM) 722 and other volatile memories that will not last in the power-down duration.
  • a computer program 730 includes computer executable instructions that are executed by the associated processor 710.
  • the instructions of the program 730 may include instructions for performing operations/acts of some example embodiments of the present disclosure.
  • the program 730 may be stored in the memory, e.g., the ROM 724.
  • the processor 710 may perform any suitable actions and processing by loading the program 730 into the RAM 722.
  • the example embodiments of the present disclosure may be implemented by means of the program 730 so that the device 700 may perform any process of the disclosure as discussed with reference to FIG. 1 to FIG. 6.
  • the example embodiments of the present disclosure may also be implemented by hardware or by a combination of software and hardware.
  • the program 730 may be tangibly contained in a computer readable medium which may be included in the device 700 (such as in the memory 720) or other storage devices that are accessible by the device 700.
  • the device 700 may load the program 730 from the computer readable medium to the RAM 722 for execution.
  • the computer readable medium may include any types of non-transitory storage medium, such as ROM, EPROM, a flash memory, a hard disk, CD, DVD, and the like.
  • the term “non-transitory, ” as used herein, is a limitation of the medium itself (i.e., tangible, not a signal) as opposed to a limitation on data storage persistency (e.g., RAM vs. ROM) .
  • FIG. 8 shows an example of the computer readable medium 800 which may be in form of CD, DVD or other optical storage disk.
  • the computer readable medium 800 has the program 730 stored thereon.
  • various embodiments of the present disclosure may be implemented in hardware or special purpose circuits, software, logic or any combination thereof. Some aspects may be implemented in hardware, while other aspects may be implemented in firmware or software which may be executed by a controller, microprocessor or other computing device. While various aspects of embodiments of the present disclosure are illustrated and described as block diagrams, flowcharts, or using some other pictorial representations, it is to be understood that the block, apparatus, system, technique or method described herein may be implemented in, as non-limiting examples, hardware, software, firmware, special purpose circuits or logic, general purpose hardware or controller or other computing devices, or some combination thereof.
  • Some example embodiments of the present disclosure also provide at least one computer program product tangibly stored on a computer readable medium, such as a non-transitory computer readable medium.
  • the computer program product includes computer-executable instructions, such as those included in program modules, being executed in a device on a target physical or virtual processor, to carry out any of the methods as described above.
  • program modules include routines, programs, libraries, objects, classes, components, data structures, or the like that perform particular tasks or implement particular abstract data types.
  • the functionality of the program modules may be combined or split between program modules as desired in various embodiments.
  • Machine-executable instructions for program modules may be executed within a local or distributed device. In a distributed device, program modules may be located in both local and remote storage media.
  • Program code for carrying out methods of the present disclosure may be written in any combination of one or more programming languages.
  • the program code may be provided to a processor or controller of a general purpose computer, special purpose computer, or other programmable data processing apparatus, such that the program code, when executed by the processor or controller, cause the functions/operations specified in the flowcharts and/or block diagrams to be implemented.
  • the program code may execute entirely on a machine, partly on the machine, as a stand-alone software package, partly on the machine and partly on a remote machine or entirely on the remote machine or server.
  • the computer program code or related data may be carried by any suitable carrier to enable the device, apparatus or processor to perform various processes and operations as described above.
  • Examples of the carrier include a signal, computer readable medium, and the like.
  • the computer readable medium may be a computer readable signal medium or a computer readable storage medium.
  • a computer readable medium may include but not limited to an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any suitable combination of the foregoing. More specific examples of the computer readable storage medium would include an electrical connection having one or more wires, a portable computer diskette, a hard disk, a random access memory (RAM) , a read-only memory (ROM) , an erasable programmable read-only memory (EPROM or Flash memory) , an optical fiber, a portable compact disc read-only memory (CD-ROM) , an optical storage device, a magnetic storage device, or any suitable combination of the foregoing.

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Abstract

Des modes de réalisation donnés à titre d'exemple de la présente divulgation concernent la détermination améliorée de conflits de ressources au niveau d'un dispositif de réception pour une communication en liaison latérale en forme de faisceau. Un premier dispositif détermine une première ressource réservée pour une première transmission d'un second dispositif au premier dispositif et un premier faisceau du premier dispositif pour une communication avec le second dispositif ; détermine une seconde ressource associée à une seconde transmission d'un troisième dispositif au premier dispositif et un second faisceau du premier dispositif pour une communication avec le troisième dispositif ; et détermine un conflit de ressources entre la seconde ressource et la première ressource d'après au moins l'un des éléments suivants : le fait que le premier faisceau diffère du second faisceau, une première mesure associée au premier faisceau et au troisième dispositif, et une seconde mesure associée au second faisceau et au second dispositif.
PCT/CN2023/086676 2023-04-06 2023-04-06 Détermination améliorée de conflits de ressources au niveau d'un dispositif de réception pour une communication en liaison latérale en forme de faisceau Ceased WO2024207338A1 (fr)

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PCT/CN2023/086676 WO2024207338A1 (fr) 2023-04-06 2023-04-06 Détermination améliorée de conflits de ressources au niveau d'un dispositif de réception pour une communication en liaison latérale en forme de faisceau
CN202380097770.XA CN121040200A (zh) 2023-04-06 2023-04-06 用于波束成形侧链路通信的接收设备处的资源冲突的增强确定

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