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WO2024138314A1 - 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

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Publication number
WO2024138314A1
WO2024138314A1 PCT/CN2022/141971 CN2022141971W WO2024138314A1 WO 2024138314 A1 WO2024138314 A1 WO 2024138314A1 CN 2022141971 W CN2022141971 W CN 2022141971W WO 2024138314 A1 WO2024138314 A1 WO 2024138314A1
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WIPO (PCT)
Prior art keywords
terminal device
sub
resource
channel
starting
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
Application number
PCT/CN2022/141971
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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
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NEC Corp
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Filing date
Publication date
Application filed by NEC Corp filed Critical NEC Corp
Priority to PCT/CN2022/141971 priority Critical patent/WO2024138314A1/fr
Publication of WO2024138314A1 publication Critical patent/WO2024138314A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • 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
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0044—Allocation of payload; Allocation of data channels, e.g. PDSCH or PUSCH
    • 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
    • H04L5/0092—Indication of how the channel is divided

Definitions

  • Embodiments of the present disclosure generally relate to the field of telecommunication, and in particular, to devices, methods and computer readable media for sidelink communications.
  • Fig. 14 is a simplified block diagram of a device that is suitable for implementing embodiments of the present disclosure.
  • 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
  • a first starting symbol and a second starting symbol are configured in a slot for sidelink communications.
  • the first starting symbol is symbol #0 in the slot
  • the second starting symbol is symbol #7 (other symbols are also possible) in the slot.
  • Figs. 6A and 6B illustrate an example of candidate PSCCH resources in a slot with two starting symbols in accordance with some embodiments of the present disclosure, respectively.
  • mapping of the values of the new field startSubchannel and the offsets between the second sub-channel and the first starting sub-channel is just an example.
  • Other mapping between the values of the new field startSubchannel and the offsets is possible.
  • value 0 of the new field startSubchannel indicates an offset between the second sub-channel and the first starting sub-channel is equal to (P-1) , which means the first starting sub-channel is the sub-channel #n-P+1;
  • value P-1 of the new field startSubchannel indicates an offset between the second sub-channel and the first starting sub-channel is equal to 0, which means the first starting sub-channel is the sub-channel #n.
  • the first terminal device 110 may perform the first sidelink transmission on the first frequency resource by transmitting first SCI on the first candidate PSCCH resource.
  • the SCI indicates, based on the first size, a first number of sub-channels comprised in the first frequency resource 800 and a second number of sub-channels comprised in the second frequency resource 805.
  • the SCI indicates the first number and the second number in unit of sub-channels.
  • the SCI indicates four contiguous sub-channels which start from a sub-channel containing the SCI.
  • the SCI also indicates four contiguous sub-channels comprised in the second frequency resource 805 and an index of the starting sub-channel 820.
  • Fig. 11 illustrates a flowchart of an example method in accordance with some embodiments of the present disclosure.
  • the method 1100 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 1110 as shown in Fig. 1.
  • the method 1100 will be described with reference to Fig. 1 as performed by the second terminal device 120 without loss of generality.
  • the second terminal device 120 determines the RB set 1222 is reserved by the third SCI for sidelink transmission of the third terminal device 130. Thus, the second terminal device 120 may skip monitoring of candidate PSCCH resources 1224, 1226 and 1228 associated with the second starting symbol in the RB set 1220.
  • Fig. 13A illustrates an example of skip monitoring of at least one candidate PSCCH resource in accordance with some embodiments of the present disclosure.
  • an RP comprises RB sets 1310 and 1320.
  • the second terminal device 120 decodes first SCI on a PSCCH resource 1312 associated with a first starting symbol in a slot in a sub-channel 1330 within the RB set 1310. Alternatively, or additionally, the second terminal device 120 determines an RSRP measurement performed for the PSCCH resource 1312 is higher than an RSRP threshold.
  • the example of Fig. 13B is similar to the example of Fig. 13A.
  • the example of Fig. 13B is different from the example of Fig. 13A in that the first SCI received on the PSCCH resource 1312 indicates that sub-channels 1330 and 1332 are reserved for sidelink transmission of the first terminal device 110.
  • the second terminal device 120 may skip monitoring of candidate PSCCH resources 1314 and 1316 in the sub-channels 1330 and 1332 which are reserved by the first SCI.
  • the PSCCH skipping procedures described with reference to Figs. 11, 12, 13A and 13B may be performed by the first terminal device 110 in a similar way. Details of such example embodiments are omitted for brevity.
  • embodiments of the present disclosure may provide the following solutions.
  • a first terminal device comprises a processor configured to cause the first terminal device to: determine whether a first frequency resource starts with a first starting sub-channel which is associated with a second starting symbol in a slot and comprises a first candidate Physical Sidelink Control Channel (PSCCH) resource, wherein the second starting symbol is subsequent to a first starting symbol in the slot; in accordance with a determination that the first frequency resource starts with the first starting sub-channel, determine whether to perform first sidelink transmission on the first frequency resource; and in accordance with a determination that the first sidelink transmission is to be performed, perform the first sidelink transmission on the first frequency resource.
  • PSCCH Physical Sidelink Control Channel
  • the first terminal device is further caused to: in accordance with a determination that the first frequency resource does not start with the first starting sub-channel, determine not to perform the first sidelink transmission on the first frequency resource.
  • the first terminal device is caused to determine whether to perform the first sidelink transmission on the first frequency resource by determining to perform the first sidelink transmission on the first frequency resource based on determining at least one of the following: a Channel Access Priority Class (CAPC) or layer-2 priority of the first sidelink transmission is higher than a CAPC threshold, the first sidelink transmission is a retransmission of sidelink data, or the first terminal device does not obtain Channel occupancy time (COT) or shared COT.
  • a Channel Access Priority Class (CAPC) or layer-2 priority of the first sidelink transmission is higher than a CAPC threshold
  • the first sidelink transmission is a retransmission of sidelink data
  • COT Channel occupancy time
  • the first terminal device is further caused to: in accordance with a determination that the first frequency resource does not start with the first starting sub-channel, perform the first sidelink transmission on the first frequency resource.
  • the first terminal device is caused to perform the first sidelink transmission on the first frequency resource by transmitting first sidelink control information (SCI) on a second candidate PSCCH resource comprised in a second sub-channel in the first frequency resource.
  • the first SCI indicates at least one of the following: a first index of the first starting sub-channel, the number of sub-channels comprised in each of the first frequency resource and a second frequency resource for a second sidelink transmission, or a second index of a second starting sub-channel of the second frequency resource.
  • the second sidelink transmission is a retransmission of the first sidelink transmission or a periodical transmission associated with the first sidelink transmission.
  • the first terminal device is further caused to: determine a frequency resource indicator value (FRIV) based on the first index, the number of sub-channels and the second index, wherein the first SCI indicates the FRIV.
  • FRIV frequency resource indicator value
  • the first terminal device is further caused to: determine a frequency resource indicator value (FRIV) based on the number of sub-channels and the second index, wherein the first SCI indicates the first index and the FRIV.
  • FRIV frequency resource indicator value
  • the first SCI indicates the first index by indicating an offset between the second sub-channel and the first starting sub-channel.
  • the first terminal device is caused to determine whether the first frequency resource starts with the first starting sub-channel by determining whether a starting resource block (RB) of the first frequency resource is aligned with a starting RB of a second type of sub-channels associated with the second starting symbol.
  • a second size of the second type of sub-channels is multiples of a first size of a first type of sub-channels which is associated with the first starting symbol.
  • the first terminal device is further caused to: in accordance with a determination that the starting RB of the first frequency resource is not aligned with the starting RB of the second type of sub-channels, determine not to perform the first sidelink transmission on the first frequency resource.
  • the first terminal device is further caused to: in accordance with a determination that the starting RB of the first frequency resource is aligned with the starting RB of the second type of sub-channels, determine to perform the first sidelink transmission on the first frequency resource.
  • the first terminal device is caused to perform the first sidelink transmission on the first frequency resource by transmitting first sidelink control information (SCI) on the first candidate PSCCH resource.
  • the first SCI indicates, based on the first size or the second size, a first number of sub-channels comprised in the first frequency resource, and/or the first SCI indicates, based on the first size or the second size, a second number of sub-channels comprised in a second frequency resource for a second sidelink transmission.
  • the second sidelink transmission is a retransmission of the first sidelink transmission or a periodical transmission associated with the first sidelink transmission.
  • the first terminal device is further caused to: based on detecting second sidelink control information (SCI) transmitted by a second terminal device on a third candidate PSCCH resource associated with the first starting symbol in the slot within a resource block (RB) set, determine whether frequency-division multiplexing (FDM) is allowed between the first terminal device and the second terminal device; and in accordance with a determination that the FDM is not allowed, skip monitoring of at least one candidate PSCCH resource associated with the second starting symbol in the slot within the RB set.
  • SCI second sidelink control information
  • FDM frequency-division multiplexing
  • the first terminal device is caused to skip monitoring of the at least one candidate PSCCH resource by skipping monitoring of the at least one candidate PSCCH resource in a sub-channel where the SCI is received.
  • the second terminal device is further caused to: in accordance with a determination that the FDM is allowed, determine whether the RB set is reserved by the first SCI; and in accordance with a determination that the RB set is reserved by the first SCI, skip monitoring of the at least one candidate PSCCH resource associated with the second starting symbol in the RB set.
  • the second terminal device is caused to skip monitoring of the at least one candidate PSCCH resource by skipping monitoring of the at least one candidate PSCCH resource in a sub-channel where the first SCI is received.
  • the second terminal device is caused to skip monitoring of the at least one candidate PSCCH resource by skipping monitoring of the at least one candidate PSCCH resource in at least one sub-channel which is reserved by the first SCI.
  • the second terminal device is caused to detect the first SCI by at least one of the following: decoding the first SCI, or determining a Reference Signal Receiving Power (RSRP) measurement performed for the fourth candidate PSCCH resource is higher than an RSRP threshold.
  • RSRP Reference Signal Receiving Power
  • the device 1400 includes a processor 1410, a memory 1420 coupled to the processor 1410, a suitable transmitter (TX) and receiver (RX) 1440 coupled to the processor 1410, and a communication interface coupled to the TX/RX 1440.
  • the memory 1420 stores at least a part of a program 1430.
  • the TX/RX 1440 is for bidirectional communications.
  • the TX/RX 1440 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 interface for bidirectional communications between gNBs or eNBs, S1 interface for communication between a Mobility Management Entity (MME) /Serving Gateway (S-GW) and the gNB or eNB, Un interface for communication between the gNB or eNB and a relay node (RN) , or Uu interface for communication between the gNB or eNB and a terminal device.
  • MME Mobility Management Entity
  • S-GW Serving Gateway
  • Un interface for communication between the gNB or eNB and a relay node (RN)
  • Uu interface for communication between the gNB or eNB and a terminal device.
  • the program 1430 is assumed to include program instructions that, when executed by the associated processor 1410, enable the device 1400 to operate in accordance with the embodiments of the present disclosure, as discussed herein with reference to Figs. 1 to 13B.
  • the embodiments herein may be implemented by computer software executable by the processor 1410 of the device 1400, or by hardware, or by a combination of software and hardware.
  • the processor 1410 may be configured to implement various embodiments of the present disclosure.
  • a combination of the processor 1410 and memory 1420 may form processing means 1450 adapted to implement various embodiments of the present disclosure.
  • the memory 1420 may be of any type suitable to the local technical network and may be implemented using any suitable data storage technology, such as a non-transitory computer readable storage medium, semiconductor based memory devices, magnetic memory devices and systems, optical memory devices and systems, fixed memory and removable memory, as non-limiting examples. While only one memory 1420 is shown in the device 1400, there may be several physically distinct memory modules in the device 1400.
  • the processor 1410 may be of any type suitable to the local technical network, and may include one or more of general purpose computers, special purpose computers, microprocessors, digital signal processors (DSPs) and processors based on multicore processor architecture, as non-limiting examples.
  • the device 1400 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.
  • 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

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  • 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 un dispositif, un procédé et des supports lisibles par ordinateur pour des communications de liaison latérale. Un premier dispositif terminal détermine si une première ressource de fréquence commence par un premier sous-canal de départ qui est associé à un second symbole de départ dans un créneau et comprend une première ressource PSCCH candidate. Le second symbole de départ est subséquent à un premier symbole de départ dans le créneau. Si la première ressource de fréquence commence par le premier sous-canal de départ, le premier dispositif terminal détermine s'il faut réaliser une première transmission de liaison latérale sur la première ressource de fréquence. Si la première transmission de liaison latérale doit être réalisée, le premier dispositif terminal réalise la première transmission de liaison latérale sur la première ressource de fréquence.
PCT/CN2022/141971 2022-12-26 2022-12-26 Dispositif, procédé et support lisible par ordinateur pour des communications de liaison latérale Ceased WO2024138314A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/CN2022/141971 WO2024138314A1 (fr) 2022-12-26 2022-12-26 Dispositif, procédé et support lisible par ordinateur pour des communications de liaison latérale

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Application Number Priority Date Filing Date Title
PCT/CN2022/141971 WO2024138314A1 (fr) 2022-12-26 2022-12-26 Dispositif, procédé et support lisible par ordinateur pour des communications de liaison latérale

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WO2024138314A1 true WO2024138314A1 (fr) 2024-07-04

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2021217549A1 (fr) * 2020-04-30 2021-11-04 Qualcomm Incorporated Multiplexage de données de liaison latérale pour la communication
WO2022246706A1 (fr) * 2021-05-26 2022-12-01 Nokia Shanghai Bell Co., Ltd. Rétroaction harq ack pour communications de liaison latérale
CN115462160A (zh) * 2020-04-30 2022-12-09 高通股份有限公司 用于通信的交错的侧行链路数据

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2021217549A1 (fr) * 2020-04-30 2021-11-04 Qualcomm Incorporated Multiplexage de données de liaison latérale pour la communication
CN115462160A (zh) * 2020-04-30 2022-12-09 高通股份有限公司 用于通信的交错的侧行链路数据
WO2022246706A1 (fr) * 2021-05-26 2022-12-01 Nokia Shanghai Bell Co., Ltd. Rétroaction harq ack pour communications de liaison latérale

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
LG ELECTRONICS: "Discussion on physical layer structure for NR sidelink", 3GPP DRAFT; R1-1908900 DISCUSSION ON PHYSICAL LAYER STRUCTURE FOR NR SIDELINK, 3RD GENERATION PARTNERSHIP PROJECT (3GPP), MOBILE COMPETENCE CENTRE ; 650, ROUTE DES LUCIOLES ; F-06921 SOPHIA-ANTIPOLIS CEDEX ; FRANCE, vol. RAN WG1, no. Prague, CZ; 20190826 - 20190830, 17 August 2019 (2019-08-17), Mobile Competence Centre ; 650, route des Lucioles ; F-06921 Sophia-Antipolis Cedex ; France , pages 1 - 34, XP051765508 *

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