WO2022204964A1 - Techniques de détermination de période de repos avec temps d'occupation de canal flottant - Google Patents

Techniques de détermination de période de repos avec temps d'occupation de canal flottant Download PDF

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Publication number
WO2022204964A1
WO2022204964A1 PCT/CN2021/084054 CN2021084054W WO2022204964A1 WO 2022204964 A1 WO2022204964 A1 WO 2022204964A1 CN 2021084054 W CN2021084054 W CN 2021084054W WO 2022204964 A1 WO2022204964 A1 WO 2022204964A1
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WO
WIPO (PCT)
Prior art keywords
ffp
cot
idle period
control signaling
fixed frame
Prior art date
Application number
PCT/CN2021/084054
Other languages
English (en)
Inventor
Shaozhen GUO
Jing Sun
Changlong Xu
Xiaoxia Zhang
Aleksandar Damnjanovic
Rajat Prakash
Original Assignee
Qualcomm Incorporated
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 Qualcomm Incorporated filed Critical Qualcomm Incorporated
Priority to PCT/CN2021/084054 priority Critical patent/WO2022204964A1/fr
Publication of WO2022204964A1 publication Critical patent/WO2022204964A1/fr

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    • 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]

Definitions

  • the UEs 115 and the base stations 105 may wirelessly communicate with one another via one or more communication links 125 over one or more carriers.
  • the term “carrier” may refer to a set of radio frequency spectrum resources having a defined physical layer structure for supporting the communication links 125.
  • a carrier used for a communication link 125 may include a portion of a radio frequency spectrum band (e.g., a bandwidth part (BWP) ) that is operated according to one or more physical layer channels for a given radio access technology (e.g., LTE, LTE-A, LTE-A Pro, NR) .
  • BWP bandwidth part
  • a wireless communications resource may refer to a combination of a radio frequency spectrum resource, a time resource, and a spatial resource (e.g., spatial layers or beams) , and the use of multiple spatial layers may further increase the data rate or data integrity for communications with a UE 115.
  • One or more numerologies for a carrier may be supported, where a numerology may include a subcarrier spacing ( ⁇ f) and a cyclic prefix.
  • a carrier may be divided into one or more BWPs having the same or different numerologies.
  • a UE 115 may be configured with multiple BWPs.
  • a single BWP for a carrier may be active at a given time and communications for the UE 115 may be restricted to one or more active BWPs.
  • the base stations 105 and the UEs 115 of the wireless communications system 100 may support techniques for determining a position of idle periods within FFPs including floating COTs.
  • the base station 105-a and the UE 115-a may be configured to communicate via unlicensed spectrum (e.g., NR-U) which includes, or is associated with, a set of FFPs 210.
  • the unlicensed spectrum may be configured with floating COTs 215.
  • a relative position of a COT 215 within each FFP 210 may change from one FFP 210 to another.
  • wireless devices e.g., base stations 105, UEs 115
  • the UE 115-a may be configured to determine a position of the COT 215 and/or a position of the idle period 220 within the FFP 210 based on (e.g., in accordance with) the control signaling 230.
  • the UE 115-a may be configured to determine a position of the COT 215 and/or a position of the idle period 220 within the FFP 210 based on (e.g., in accordance with) parameters associated with the COT 215 which were indicated via the control signaling 230, including COT configurations, offsets associated with the COT 215, remaining COT durations indicated via COT-SI, or any combination thereof.
  • the second FFP 310-a may include an idle period 320-c, where the idle period 320-c is positioned at an end of the second FFP 310-b.
  • the third FFP 310-a may include an idle period 320-d, where the idle period 320-d is positioned at a beginning of the third FFP 310-c.
  • process flow 800 may include a UE 115-c and a base station 105-c, which may be examples of corresponding devices as described herein.
  • the UE 115-c illustrated in FIG. 8 may include an example of the UE 115-a illustrated in FIG. 2.
  • the first base station 105-c illustrated in FIG. 8 may include an example of the base station 105-a illustrated in FIG. 2.
  • the UE 115-c may determine the position of the idle period within the FFP based on monitoring the search space sets at 810, receiving the downlink message at 815, receiving the control signaling at 820, determining the position of the COT within the FFP at 825, or any combination thereof.
  • the communications manager 920 may be configured to perform various operations (e.g., receiving, monitoring, transmitting) using or otherwise in cooperation with the receiver 910, the transmitter 915, or both.
  • the communications manager 920 may receive information from the receiver 910, send information to the transmitter 915, or be integrated in combination with the receiver 910, the transmitter 915, or both to receive information, transmit information, or perform various other operations as described herein.
  • the idle period manager 1130 may be configured as or otherwise support a means for determining an idle period in accordance with the FFP configuration, where the position of the idle period within the FFP is determined in accordance with the minimum idle period at the beginning of the FFP and the minimum idle period at the end of the FFP, where the minimum idle period is 2*max (5% of FFP, 100 ⁇ s)
  • the communications manager 1220 may be configured to perform various operations (e.g., receiving, monitoring, transmitting) using or otherwise in cooperation with the transceiver 1215, the one or more antennas 1225, or any combination thereof.
  • the communications manager 1220 is illustrated as a separate component, in some examples, one or more functions described with reference to the communications manager 1220 may be supported by or performed by the processor 1240, the memory 1230, the code 1235, or any combination thereof.
  • the code 1235 may include instructions executable by the processor 1240 to cause the device 1205 to perform various aspects of techniques for idle period determination with floating COT as described herein, or the processor 1240 and the memory 1230 may be otherwise configured to perform or support such operations.
  • the method may include receiving, from a base station, control signaling indicating an FFP configuration, a position of a COT within a FFP associated with unlicensed spectrum, or both.
  • the operations of 1505 may be performed in accordance with examples as disclosed herein. In some examples, aspects of the operations of 1505 may be performed by a control signaling receiving manager 1125 as described with reference to FIG. 11.
  • Aspect 3 The method of aspect 2, wherein determining the position of the idle period within the FFP comprises: determining resources within the FFP which correspond to the first idle period and the second idle period in the time domain.
  • a general-purpose processor may be a microprocessor, but in the alternative, the processor may be any processor, controller, microcontroller, or state machine.
  • a processor may also be implemented as a combination of computing devices (e.g., a combination of a DSP and a microprocessor, multiple microprocessors, one or more microprocessors in conjunction with a DSP core, or any other such configuration) .

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

Abstract

L'invention concerne des procédés, des systèmes et des dispositifs destinés aux communications sans fil. Un équipement utilisateur (UE) peut recevoir, en provenance d'une station de base, une signalisation de commande indiquant une configuration de période de trame fixe (FFP), une position d'un temps d'occupation de canal (COT) à l'intérieur d'une FFP associé à un spectre sans licence, ou les deux. La signalisation de commande peut indiquer une ou plusieurs configurations COT, un ou plusieurs décalages COT, une durée restante d'un COT, ou toute combinaison de ceux-ci. L'UE peut ensuite déterminer une position d'une période de repos à l'intérieur de la FFP conformément à la signalisation de commande, et peut transmettre ou recevoir une communication avec la station de base à l'intérieur de la FFP conformément à la position déterminée de la période de repos. En particulier, l'UE peut transmettre ou recevoir la communication à l'extérieur de la période de repos déterminée de la FFP.
PCT/CN2021/084054 2021-03-30 2021-03-30 Techniques de détermination de période de repos avec temps d'occupation de canal flottant WO2022204964A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/CN2021/084054 WO2022204964A1 (fr) 2021-03-30 2021-03-30 Techniques de détermination de période de repos avec temps d'occupation de canal flottant

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2021/084054 WO2022204964A1 (fr) 2021-03-30 2021-03-30 Techniques de détermination de période de repos avec temps d'occupation de canal flottant

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WO2022204964A1 true WO2022204964A1 (fr) 2022-10-06

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20190335456A1 (en) * 2018-04-26 2019-10-31 Qualcomm Incorporated Frame-based initiator device operation
US20200305191A1 (en) * 2019-03-22 2020-09-24 Electronics And Telecommunications Research Institute Method and apparatus for transmitting and receiving signal in communication system supporting unlicensed band
US20200314891A1 (en) * 2019-03-29 2020-10-01 Samsung Electronics Co., Ltd. Method and apparatus for frame based equipment operation of nr unlicensed

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20190335456A1 (en) * 2018-04-26 2019-10-31 Qualcomm Incorporated Frame-based initiator device operation
US20200305191A1 (en) * 2019-03-22 2020-09-24 Electronics And Telecommunications Research Institute Method and apparatus for transmitting and receiving signal in communication system supporting unlicensed band
US20200314891A1 (en) * 2019-03-29 2020-10-01 Samsung Electronics Co., Ltd. Method and apparatus for frame based equipment operation of nr unlicensed

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
QUALCOMM INCORPORATED: "Uplink enhancements for URLLC in unlicensed controlled environments", vol. RAN WG1, no. e-Meeting; 20210125 - 20210205, 19 January 2021 (2021-01-19), XP051971626, Retrieved from the Internet <URL:https://ftp.3gpp.org/tsg_ran/WG1_RL1/TSGR1_104-e/Docs/R1-2101461.zip R1-2101461 Uplink enhancements for URLLC in unlicensed controlled environments.docx> [retrieved on 20210119] *
SHARP: "Enhancements for unlicensed band URLLC/IIoT", vol. RAN WG1, no. e-Meeting; 20210125 - 20210205, 19 January 2021 (2021-01-19), XP051971705, Retrieved from the Internet <URL:https://ftp.3gpp.org/tsg_ran/WG1_RL1/TSGR1_104-e/Docs/R1-2101540.zip R1-2101540 8.3.2 Sharp.docx> [retrieved on 20210119] *

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