WO2024103219A1 - Procédés de transmission de sl sur un spectre sans licence - Google Patents

Procédés de transmission de sl sur un spectre sans licence Download PDF

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Publication number
WO2024103219A1
WO2024103219A1 PCT/CN2022/131713 CN2022131713W WO2024103219A1 WO 2024103219 A1 WO2024103219 A1 WO 2024103219A1 CN 2022131713 W CN2022131713 W CN 2022131713W WO 2024103219 A1 WO2024103219 A1 WO 2024103219A1
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WO
WIPO (PCT)
Prior art keywords
starting position
cpe
transmission
symbol
unlicensed spectrum
Prior art date
Application number
PCT/CN2022/131713
Other languages
English (en)
Inventor
Junqiang CHENG
Tao Chen
Jing-Wei Chen
Original Assignee
Mediatek Singapore Pte. Ltd.
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 Mediatek Singapore Pte. Ltd. filed Critical Mediatek Singapore Pte. Ltd.
Priority to PCT/CN2022/131713 priority Critical patent/WO2024103219A1/fr
Priority to CN202311491255.8A priority patent/CN118042609A/zh
Priority to US18/388,892 priority patent/US20240163148A1/en
Priority to EP23209815.2A priority patent/EP4369647A1/fr
Publication of WO2024103219A1 publication Critical patent/WO2024103219A1/fr

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    • 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
    • H04W74/00—Wireless channel access
    • H04W74/08—Non-scheduled access, e.g. ALOHA
    • H04W74/0808—Non-scheduled access, e.g. ALOHA using carrier sensing, e.g. carrier sense multiple access [CSMA]
    • 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
    • H04L5/0037—Inter-user or inter-terminal allocation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/50—Allocation or scheduling criteria for wireless resources
    • H04W72/56—Allocation or scheduling criteria for wireless resources based on priority criteria
    • H04W72/566—Allocation or scheduling criteria for wireless resources based on priority criteria of the information or information source or recipient
    • H04W72/569—Allocation or scheduling criteria for wireless resources based on priority criteria of the information or information source or recipient of the traffic information

Definitions

  • the invention discussed below relates generally to wireless communication systems, and more particularly, to transmission methods of SL over unlicensed spectrum.
  • the channel access (LBT) procedures may be completed at micro-second level, thus the CP extension operation can be implemented before the starting symbol within a slot.
  • the methods to define the starting position (s) of CP extension should be solved and the criteria of CP extension utilization with single and/or multiple starting position (s) should be addressed.
  • CP extension can be utilized preceding the transmission.
  • the CP extension can be defined with single starting position and/or multiple starting positions within a symbol.
  • the utilization of CP extension starting position can be (pre-) configured and/or indicated based on SL transmission status (e.g., initial transmission or re-transmission, and/or transmission before non-reserved or reserved resource) , and/or resource status (e.g., reserved resource or non-reserved resource) , and/or reservation information status (available or unavailable) , and/or signal/channel types (e.g., PSCCH/PSSCH, PSFCH, S-SSB) , and/or applicable scenario (outside or inside COT) .
  • SL transmission status e.g., initial transmission or re-transmission, and/or transmission before non-reserved or reserved resource
  • resource status e.g., reserved resource or non-reserved resource
  • reservation information status available or unavailable
  • signal/channel types e.g., PS
  • FIG. 1 illustrates an exemplary diagram of the present transmission methods of SL on unlicensed spectrum with single and/or multiple CPE starting positions within a symbol.
  • This invention is motived by, but not limited to, a scenario where SL operated on unlicensed spectrum.
  • the channel access procedure (LBT) may complete at micro-second level and the transmission may start at some specific symbol index within a slot.
  • the CP extension (CPE) can be utilized by the UE to align the boundary of the starting symbol, and/or retain the channel, and/or generate a specific gap between two transmission.
  • the methods of definition and utilization methods of CP extension are addressed in this disclosure.
  • multiple CP extension starting positions can be (pre-) configured and/or (pre-) defined within a symbol (e.g., the last symbol of the slot and/or the symbol before the (pre-) configured starting symbol (s) within a slot) .
  • the number of CPE starting position and the gap between two consecutive CPE starting positions within a symbol can be (pre-) configured and/or indicated.
  • the first CPE starting position can be set as 16us after the symbol starting position/leading boundary.
  • the other CPE starting position (s) can be set with a gap (e.g., 9us) form the previous CPE starting position.
  • single CPE starting position can be (pre-) configured and/or indicated within a symbol.
  • the position of single CPE starting position can be (pre-) configured and/or indicated. For example, it can be (pre-) configured and/or indicated before the 1 st one of the multiple CPE starting positions, and/or after the last one of the multiple CPE starting positions, and/or in the middle of multiple CPE starting positions.
  • the single CPE starting position can be (pre-) configured and/or indicated as one of the multiple CPE starting positions or not.
  • the utilization of CPE starting position can be based on the traffic priority and/or CAPC and/or network loading and/or CBR. For example, for the traffic with a higher priority (i.e., a smaller value of CAPC) , it can use a prioritized CPE starting position (e.g., an earlier CPE starting position) to access the channel. For the traffic with a lower priority (i.e., a larger value of CAPC) , it can use a de-prioritized CPE starting position (e.g., an later CPE starting position) to access the channel.
  • a prioritized CPE starting position e.g., an earlier CPE starting position
  • a de-prioritized CPE starting position e.g., an later CPE starting position
  • multiple CPE starting positions within a symbol can be used.
  • the transmissions from different UEs can be started from one of the multiple CPE starting positions based on the priority and/or CAPC of their traffic. Then the UE with an earlier CPE starting position within a symbol can start CPE earlier and then block the channel access of the other UEs.
  • single CPE starting position within a symbol can be (pre-) configured and/or indicated.
  • the transmissions of different UEs can be started from the single CPE starting position, and FDMed transmission can be achieved.
  • Single CPE starting position can be (pre-) configured and/or indicated to be individual/independent/different from the multiple CPE starting positions, and /or as one of the multiple CPE starting positions.
  • single CPE starting position within a symbol can be used.
  • multiple CPE starting positions within a symbol can be used.
  • single CPE starting position within a symbol can be (pre-) configured and/or indicated.
  • the PSFCH transmission from multiple UEs can be FDMed in different partial RB set and/or sub-channel and/or interlace and/or PRB by transmitting from the single CPE starting position after channel access procedures are completed.
  • the channel access procedure (LBT) of both UE-1 and UE-2 are completed at slot n.
  • the CPE is operated by UE-1 and UE-2 at the last symbol (symbol #13) of slot n.
  • symbol #13 the last symbol of slot n.
  • the UE having traffic with higher priority can start CPE at an earlier CPE starting position, e.g., UE-1 with higher priority starts CPE at CPE starting position #0 as shown in Figure 1.
  • the UE having traffic with lower priority can start CPE at a later CPE starting position, e.g., UE-2 with lower priority starts CPE at CPE starting position #2 as shown in Figure 1.
  • the CPE of UE-1 from CPE starting position #0 can block the channel access of UE-2 before UE-2 starts CPE at CPE starting position #1. Then, slot n is occupied by UE-1 only to transmit.
  • the channel access procedure (LBT) of both UE-1 and UE-3 are completed at slot m.
  • the CPE is operated by UE-1 and UE-3 at the last symbol (symbol #13) of slot m.
  • slot m+1 is reserved (e.g., reserved by UE-1 and/or UE-3) , single CPE starting position within symbol #13 of slot m is used. Then both UE-1 and UE-3 can start CPE at the single CPE starting position.
  • the slot m+1 is occupied by both UE-1 and UE-3 to transmit in the way of FDM.
  • Combinations such as “at least one of A, B, or C, ” “one or more of A, B, or C, ” “at least one of A, B, and C, ” “one or more of A, B, and C, ” and “A, B, C, or any combination thereof” include any combination of A, B, and/or C, and may include multiples of A, multiples of B, or multiples of C.
  • combinations such as “at least one of A, B, or C, ” “one or more of A, B, or C, ” “at least one of A, B, and C, ” “one or more of A, B, and C, ” and “A, B, C, or any combination thereof” may be A only, B only, C only, A and B, A and C, B and C, or A and B and C, where any such combinations may contain one or more member or members of A, B, or C.

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

Abstract

La présente divulgation concerne des procédés de transmission de SL sur un spectre sans licence. En particulier, une opération d'extension de CP peut être utilisée pour un UE transmis sur un spectre sans licence. L'extension de CP peut être définie avec une seule position de départ et/ou de multiples positions de départ. L'utilisation de la position de départ d'extension de CP peut être (pré-)configurée et/ou indiquée sur la base d'un état de transmission de SL (par exemple, une transmission initiale/retransmission), et/ou d'un état de ressource (par exemple, réservé ou non réservé), et/ou d'un état d'informations de réservation (disponible ou indisponible), et/ou des types de signal/canal (par exemple, PSCCH/PSSCH, PSFCH, S-SSB), et/ou un scénario applicable (à l'extérieur ou à l'intérieur du COT).
PCT/CN2022/131713 2022-11-14 2022-11-14 Procédés de transmission de sl sur un spectre sans licence WO2024103219A1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
PCT/CN2022/131713 WO2024103219A1 (fr) 2022-11-14 2022-11-14 Procédés de transmission de sl sur un spectre sans licence
CN202311491255.8A CN118042609A (zh) 2022-11-14 2023-11-09 侧行链路传输方法、装置及计算机可读介质
US18/388,892 US20240163148A1 (en) 2022-11-14 2023-11-13 Transmission methods of sl over unlicensed spectrum
EP23209815.2A EP4369647A1 (fr) 2022-11-14 2023-11-14 Procédés de transmission de sl sur un spectre sans licence

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2022/131713 WO2024103219A1 (fr) 2022-11-14 2022-11-14 Procédés de transmission de sl sur un spectre sans licence

Publications (1)

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WO2024103219A1 true WO2024103219A1 (fr) 2024-05-23

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CN (1) CN118042609A (fr)
WO (1) WO2024103219A1 (fr)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017120542A1 (fr) * 2016-01-06 2017-07-13 Intel IP Corporation Procédé et appareil pour accès à un canal pour la transmission de commande de canal partagé de liaison montante physique (pusch) et de liaison montante
CN113518469A (zh) * 2019-10-17 2021-10-19 Oppo广东移动通信有限公司 指示信道接入的方法及装置
CN113518385A (zh) * 2020-04-09 2021-10-19 上海诺基亚贝尔股份有限公司 与lbt过程有关的操作
CN115190644A (zh) * 2021-04-07 2022-10-14 上海诺基亚贝尔股份有限公司 用于侧链路传输的方法、设备和计算机可读介质

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017120542A1 (fr) * 2016-01-06 2017-07-13 Intel IP Corporation Procédé et appareil pour accès à un canal pour la transmission de commande de canal partagé de liaison montante physique (pusch) et de liaison montante
CN113518469A (zh) * 2019-10-17 2021-10-19 Oppo广东移动通信有限公司 指示信道接入的方法及装置
CN113518385A (zh) * 2020-04-09 2021-10-19 上海诺基亚贝尔股份有限公司 与lbt过程有关的操作
CN115190644A (zh) * 2021-04-07 2022-10-14 上海诺基亚贝尔股份有限公司 用于侧链路传输的方法、设备和计算机可读介质

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