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1. WO2017140249 - LISTEN BEFORE TALK CHANNEL ACCESS PROCEDURE FOR UPLINK LAA

Publication Number WO/2017/140249
Publication Date 24.08.2017
International Application No. PCT/CN2017/073755
International Filing Date 16.02.2017
IPC
H04W 74/08 2009.1
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
WWIRELESS COMMUNICATION NETWORKS
74Wireless channel access, e.g. scheduled or random access
08Non-scheduled access, e.g. random access, ALOHA or CSMA
H04W 72/12 2009.1
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
WWIRELESS COMMUNICATION NETWORKS
72Local resource management, e.g. selection or allocation of wireless resources or wireless traffic scheduling
12Wireless traffic scheduling
CPC
H04W 16/14
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
WWIRELESS COMMUNICATION NETWORKS
16Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
14Spectrum sharing arrangements ; between different networks
H04W 72/042
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
WWIRELESS COMMUNICATION NETWORKS
72Local resource management, e.g. wireless traffic scheduling or selection or allocation of wireless resources
04Wireless resource allocation
0406involving control information exchange between nodes
042in downlink direction of a wireless link, i.e. towards terminal
H04W 72/087
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
WWIRELESS COMMUNICATION NETWORKS
72Local resource management, e.g. wireless traffic scheduling or selection or allocation of wireless resources
04Wireless resource allocation
08where an allocation plan is defined; based on quality criteria
087using requested quality
H04W 72/1268
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
WWIRELESS COMMUNICATION NETWORKS
72Local resource management, e.g. wireless traffic scheduling or selection or allocation of wireless resources
12Dynamic; Wireless traffic scheduling ; ; Dynamically scheduled allocation on shared channel
1263Schedule usage, i.e. actual mapping of traffic onto schedule; Multiplexing of flows into one or several streams; Mapping aspects; Scheduled allocation
1268of uplink data flows
H04W 72/1289
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
WWIRELESS COMMUNICATION NETWORKS
72Local resource management, e.g. wireless traffic scheduling or selection or allocation of wireless resources
12Dynamic; Wireless traffic scheduling ; ; Dynamically scheduled allocation on shared channel
1278Transmission of control information for scheduling
1289in the downlink, i.e. towards the terminal
H04W 74/006
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
WWIRELESS COMMUNICATION NETWORKS
74Wireless channel access, e.g. scheduled or random access
002Transmission of channel access control information
006in the downlink, i.e. towards the terminal
Applicants
  • MEDIATEK INC. [CN]/[CN]
Inventors
  • YANG, Weidong
  • CHEN, Bo-Si
  • LI, Chien-Chang
  • CHEN, Yih-Shen
  • NUGGEHALLI, Pavan Santhana Krishna
Agents
  • BEIJING SANYOU INTELLECTUAL PROPERTY AGENCY LTD.
Priority Data
15/432,02214.02.2017US
62/295,58916.02.2016US
62/315,69731.03.2016US
Publication Language English (en)
Filing Language English (EN)
Designated States
Title
(EN) LISTEN BEFORE TALK CHANNEL ACCESS PROCEDURE FOR UPLINK LAA
(FR) PROCÉDURE D’ACCÈS À UN CANAL D’ÉCOUTE AVANT DE PARLER POUR UN LAA DE LIAISON MONTANTE
Abstract
(EN) A method of dynamic spectrum sharing mechanism called listen-before-talk (LBT) is proposed for uplink transmission in Licensed Assisted Access (LAA). A maximum channel occupancy time (MCOT) including downlink (DL) transmission from one eNB and uplink (UL) transmission to the same eNB is introduced. A transmission sequence is defined as a number of subframes including possible partial subframes for DL and/or UL within a MCOT. The transmission in the first subframe among the transmission sequence is conducted after a Category 4 LBT. The transmission sequence within the MCOT can be initiated by either a DL transmission or an UL transmission. After the first subframe in a transmission sequence, LBT for another transmission is a fast DL LBT and/or fast UL LBT. Further, a Category 4 LBT can be converted to a short LBT (e.g., one shot CCA) for more efficient channel access.
(FR) L’invention concerne un procédé d’un mécanisme de partage de spectre dynamique appelé écoute avant de parler (LBT) pour une transmission en liaison montante dans un accès assisté par licence (LAA). Un temps d’occupation de canal maximal (MCOT) comprenant une transmission en liaison descendante (DL) à partir d’un nœud B évolué (eNB) et une transmission en liaison montante (UL) à destination du même eNB est introduit. Une séquence de transmission est définie comme représentant un nombre de sous-trames comprenant des sous-trames partielles possibles pour une DL et/ou une UL dans un MCOT. La transmission dans la première sous-trame parmi la séquence de transmission est réalisée après une LBT de catégorie 4. La séquence de transmission dans le MCOT peut être initiée soit par une transmission DL soit par une transmission UL. Après la première sous-trame dans une séquence de transmission, une LBT pour une autre transmission est une LBT DL rapide et/ou une LBT UL rapide. En outre, une LBT de catégorie 4 peut être convertie en une LBT courte (par exemple, une CCA en une seule fois) pour permettre un accès plus efficace à un canal.
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