Title:
基地局とのタイミング同期を実行する方法及び装置
Document Type and Number:
Japanese Patent JP5543400
Kind Code:
B2
Abstract:
A wireless terminal using OFDM signalling supporting both terrestrial and satellite base station connectivity operates using conventional access probe signalling in a first mode of operation to establish a timing synchronized wireless link with a terrestrial base station, hi a second mode of operation, used to establish a timing synchronized wireless link with a satellite base station, a slightly modified access protocol is employed. The round trip signalling time and timing ambiguity between a wireless terminal and a satellite base station is substantially greater than with a terrestrial base station. The modified access protocol uses coding of access probe signals to uniquely identify a superslot index within a beaconslot. The modified protocol uses multiple access probes with different timing offsets to further resolve timing ambiguity and allows the satellite base station access monitoring interval to remain small in duration. Terrestrial base station location/connection information is used to estimate initial timing.
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Inventors:
Frank Ey. and a lane
Rajiv ラロイア
ジュンイ Li
Rajiv ラロイア
ジュンイ Li
Application Number:
JP2011092953A
Publication Date:
July 09, 2014
Filing Date:
April 19, 2011
Export Citation:
Assignee:
クゥアルコム, Incorporated QUALCOMM INCORPORATED
International Classes:
H04W56/00; H04W84/06; H04W88/06; H04W24/00; H04W48/08; H04W48/16; H04W72/12; H04W76/02; H04W88/08
Attorney, Agent or Firm:
Masatoshi Kurata
Shigeo Takakura
Kono 哲
Makoto Nakamura
Toshihiro Fukuhara
Peak Takashi
Toshiro Shirane
Sadao Muramatsu
Nobuhisa Nogawa
Yukinaga Yasujiro
Naoki Kono
Sunagawa 克
Iseki Mamoru 3
Tatsushi Sato
Okada Kishi
Mihoko Horiuchi
Masanori Takeuchi
Shigeo Takakura
Kono 哲
Makoto Nakamura
Toshihiro Fukuhara
Peak Takashi
Toshiro Shirane
Sadao Muramatsu
Nobuhisa Nogawa
Yukinaga Yasujiro
Naoki Kono
Sunagawa 克
Iseki Mamoru 3
Tatsushi Sato
Okada Kishi
Mihoko Horiuchi
Masanori Takeuchi