Wireless communication system base station apparatus,...

Details Wireless communication system base station apparatus,... Wireless communication system base station apparatus,...

2006-09-14

2011-11-15

Hannon, Christian (Department: 2618)

Telecommunications

Transmitter and receiver at same station

Radiotelephone equipment detail

C455S041200, C455S446000

Reexamination Certificate

active

08060144

ABSTRACT:
In a wireless communication system (10), when a direct link mode is to be canceled, a station (200) generates a confirmation packet for confirming an unused band of the wireless communication system (10) and transmits the confirmation packet to an access point (100). At the access point (100), a band management part (130) determines the unused band, and a packet generating part (112) generates a response packet indicative of the unused band, which is then transmitted to the station (200). The station (200) determines, based on the unused band indicated by the response packet, whether the direct link mode should be canceled, and transmits a cancellation request packet to the access point (100) if the unused band is sufficient. At the access point (100), the direct link mode is switched to a normal mode for cancellation in response to the cancellation request packet.

REFERENCES:
patent: 7251235 (2007-07-01), Wentink
patent: 2004/0240405 (2004-12-01), Okazaki
patent: 2004-363645 (2004-12-01), None
Shiro Sakata, “Ubiquitous Technology, Wireless Communication LAN”, Jun. 24, 2004, p. 165-166.
International Search Report of PCT/JP2006/318272, date of mailing Nov. 21, 2006.

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