Title:
通信ネットワークのアセット位置を識別する方法及び装置
Document Type and Number:
Japanese Patent JP2004514356
Kind Code:
A
Abstract:
The location of unmodified wireless assets in a wireless communication network may be identified using time differences of arrivals of a communication sequence at different network receivers. Time-stamping devices may include correlator circuits in parallel with signal decoders to time-stamp communication sequences. Cellular wireless networks may be frequency-multiplexed to increase spatial time-stamping density. Tags may be attached to passive assets to provide location identification information to network devices. Locations of assets broadcasting standard 802.11 radio frequency structures may be identified. Noise inherent in correlating a communication sequence may be reduced by using a selected correlation function.
Inventors:
Gorren David
Kawaguchi Dean
Bridge roll radi
Berlitsky Benjamin Jay
Zegerin Chris
Kawaguchi Dean
Bridge roll radi
Berlitsky Benjamin Jay
Zegerin Chris
Application Number:
JP2002543246A
Publication Date:
May 13, 2004
Filing Date:
November 14, 2001
Export Citation:
Assignee:
Symbol Technologies, Inc.
International Classes:
C07C67/52; C07C67/54; C07C69/82; H04N7/173; G01S1/02; G01S5/02; G01S5/06; G01S5/12; G01S19/27; G02B26/10; G03B11/00; G03B17/02; G06F1/16; G06F11/10; G06F15/00; G06K17/00; G06K19/00; G06T9/00; G09C1/00; G09G3/02; G10L19/00; G11B20/10; G11B20/14; G11B20/18; H01Q1/24; H01Q21/24; H03L7/091; H03M13/03; H03M13/13; H03M13/23; H03M13/29; H04B1/707; H04B7/005; H04B7/24; H04B7/26; H04B14/00; H04B17/00; H04H60/72; H04J3/06; H04J13/00; H04J13/16; H04L7/00; H04L9/00; H04L9/08; H04L9/10; H04L9/32; H04L12/24; H04L12/26; H04L12/28; H04L12/54; H04L25/02; H04L25/03; H04L25/49; H04L25/497; H04L27/10; H04L27/156; H04L27/18; H04L29/06; H04L29/12; H04M1/247; H04M1/66; H04M1/72415; H04M3/22; H04M11/00; H04N5/225; H04N5/44; H04N5/46; H04N5/64; H04N5/74; H04N5/76; H04N5/765; H04N5/907; H04N5/92; H04N7/01; H04N7/08; H04N7/16; H04N7/26; H04N7/36; H04N7/52; H04N9/31; H04N9/64; H04N9/79; H04N21/41; H04N21/414; H04Q3/00; H04W4/06; H04W4/12; H04W4/14; H04W4/16; H04W8/02; H04W8/06; H04W8/08; H04W8/16; H04W8/20; H04W8/26; H04W12/06; H04W12/10; H04W24/00; H04W24/04; H04W24/08; H04W24/10; H04W28/02; H04W28/08; H04W28/16; H04W28/22; H04W36/04; H04W36/18; H04W36/30; H04W40/22; H04W48/06; H04W48/16; H04W52/24; H04W56/00; H04W60/00; H04W64/00; H04W68/02; H04W72/08; H04W72/12; H04W72/14; H04W76/02; H04W76/04; H04W80/06; H04W84/08; H04W84/12; H04W84/18; H04W88/02; H04W88/04; H04W88/06; H04W88/12; H04W88/18; G11B20/22; H04L1/00; H04M1/724; H04N5/38; H04N5/66; H04N5/775; H04N5/85; H04N9/804; H04N17/00; H04W4/10; H04W8/24; H04W28/04; H04W36/02; H04W48/08; H04W72/04; H04W76/06; H04W84/04; (IPC1-7): H04Q7/34; H04L12/28
Attorney, Agent or Firm:
Minoru Nakamura
Fumiaki Otsuka
Sadao Kumakura
Shishido Kaichi
Hideto Takeuchi
Toshio Imajo
Nobuo Ogawa
Village shrine Atsuo
Takaki Nishijima
Atsushi Hakoda
Fumiaki Otsuka
Sadao Kumakura
Shishido Kaichi
Hideto Takeuchi
Toshio Imajo
Nobuo Ogawa
Village shrine Atsuo
Takaki Nishijima
Atsushi Hakoda