US 7,545,781 B2
Wireless packet communication method and wireless packet communication apparatus
Shinya Otsuki, Yokohama (Japan); Tomoaki Kumagai, Yokosuka (Japan); Kengo Nagata, Yokohama (Japan); Kazuyoshi Saito, Hachioji (Japan); Satoru Aikawa, Yokohama (Japan); and Yasuhiko Inoue, Yokohama (Japan)
Assigned to Nippon Telegraph and Telephone Corporation, Tokyo (Japan)
Appl. No. 10/549,242
PCT Filed Jul. 14, 2004, PCT No. PCT/JP2004/010355
§ 371(c)(1), (2), (4) Date Sep. 12, 2005,
PCT Pub. No. WO2005/006660, PCT Pub. Date Jan. 20, 2005.
Claims priority of application No. 2003-196301 (JP), filed on Jul. 14, 2003; application No. 2003-341315 (JP), filed on Sep. 30, 2003; application No. 2003-341316 (JP), filed on Sep. 30, 2003; application No. 2004-084302 (JP), filed on Mar. 23, 2004; and application No. 2004-146345 (JP), filed on May 17, 2004.
Prior Publication US 2007/0019592 A1, Jan. 25, 2007
Int. Cl. H04Q 7/24 (2006.01)
U.S. Cl. 370—338  [370/445; 370/448; 370/341; 370/329; 455/509] 34 Claims
OG exemplary drawing
 
1. A wireless packet communication method for simultaneously transmitting from a transmit-side STA a plurality of wireless packets by using multiple wireless channels determined to be idle by both of physical carrier sense and virtual carrier sense when multiple wireless channels are provided between the transmit-side STA and one or more receive-side STAs, the physical carrier sense determining a wireless channel to be busy or idle from received power, the virtual carrier sense determining a wireless channel to be busy during a set transmission inhibition time, the method characterized by comprising
setting, by said transmit-side STA, time (Tmax+Ts) as transmission inhibition time to a paired wireless channel other than a wireless channel which requires longest transmission time Tmax among wireless channels used for simultaneous transmission, the transmission inhibition time used in the virtual carrier sense, the time (Tmax+Ts) obtained by adding predetermined time Ts to the longest transmission time Tmax; and
setting, by said transmit-side STA, the time (Tmax+Ts) to the paired wireless channel as a new transmission inhibition time when an existing set transmission inhibition time for said virtual carrier sense is smaller than the time (Tmax+Ts).