Title:
BROADCASTING METHOD AND RADIO APPARATUS
Document Type and Number:
WIPO Patent Application WO/2010/058598
Kind Code:
A1
Abstract:
A processing unit (56) establishes time intervals at which packet signals are broadcast by use of Carrier Sense Multiple Access method. A modulating/demodulating unit (54) and an RF unit (52) broadcast the packet signals at the established time intervals. The RF unit (52) and modulating/demodulating unit (54) receive control signals that are broadcast from an access control apparatus at a predetermined frequency. The processing unit (56) arranges that the time intervals of a case where the control signals can be received be shorter than the time intervals of the other cases.
Inventors:
ITO KIYOSHIGE (JP)
NAGAI MAKOTO (JP)
NAGAI MAKOTO (JP)
Application Number:
PCT/JP2009/006278
Publication Date:
May 27, 2010
Filing Date:
November 20, 2009
Export Citation:
Assignee:
SANYO ELECTRIC CO (JP)
ITO KIYOSHIGE (JP)
NAGAI MAKOTO (JP)
ITO KIYOSHIGE (JP)
NAGAI MAKOTO (JP)
International Classes:
G08G1/09; H04W72/04; G08G1/16; H04W4/04; H04W72/08; H04W74/02
Foreign References:
| JP2006033827A | 2006-02-02 |
Other References:
MASATAKA OTA: "PDMA (Packet Division Multiple Access) ni Motozuku Doitsu Channel deno Daisho no Cell no Kasaneawase", IEICE TECHNICAL REPORT, vol. 104, no. 595, 20 January 2005 (2005-01-20), pages 119 - 122
TETSUYA FUNABASHI: "Hayawakari Koza", NIKKEI COMMUNICATIONS, no. 420, 15 August 2004 (2004-08-15), pages 102 - 103
KEITA KURAMOTO: "Kosaten Fukin no Sharyo no Anzen o Mokuteki to shita Real Time ITS Joho Tsushin System", IEICE TECHNICAL REPORT, vol. 106, no. 82, 22 May 2006 (2006-05-22), pages 35 - 39
TOMOHISA HARADA: "Jiritsu Bunsan Gata TDMA-sha Shakan Tsushin System no Kaihatsu", IPSJ SIG NOTES, vol. 2007, no. 116, 21 November 2007 (2007-11-21), pages 129 - 136
TETSUYA FUNABASHI: "Hayawakari Koza", NIKKEI COMMUNICATIONS, no. 420, 15 August 2004 (2004-08-15), pages 102 - 103
KEITA KURAMOTO: "Kosaten Fukin no Sharyo no Anzen o Mokuteki to shita Real Time ITS Joho Tsushin System", IEICE TECHNICAL REPORT, vol. 106, no. 82, 22 May 2006 (2006-05-22), pages 35 - 39
TOMOHISA HARADA: "Jiritsu Bunsan Gata TDMA-sha Shakan Tsushin System no Kaihatsu", IPSJ SIG NOTES, vol. 2007, no. 116, 21 November 2007 (2007-11-21), pages 129 - 136
Attorney, Agent or Firm:
MORISHITA, SAKAKI (JP)
Sakaki Morishita (JP)
Sakaki Morishita (JP)
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