| US 7,565,162 B2 | ||
| Wireless communication system and wireless station | ||
| Tomoko Adachi, Urayasu (Japan); Kuniaki Ito, Kawasaki (Japan); Hideo Kasami, Kawasaki (Japan); and Kiyoshi Toshimitsu, Yokohama (Japan) | ||
| Assigned to Kabushiki Kaisha Toshiba, Tokyo (Japan) | ||
| Filed on Oct. 25, 2005, as Appl. No. 11/257,042. | ||
| Application 11/257042 is a division of application No. 10/212242, filed on Aug. 06, 2002, granted, now 6,983,167. | ||
| Claims priority of application No. 2001-239198 (JP), filed on Aug. 07, 2001. | ||
| Prior Publication US 2006/0040709 A1, Feb. 23, 2006 | ||
| Int. Cl. H04B 7/00 (2006.01) | ||
| U.S. Cl. 455—522 [455/69; 455/422.1; 455/456.1; 455/500; 455/524; 370/338; 370/349; 370/395.5; 370/332; 370/345] | 22 Claims |
| 1. A wireless communication system which exchanges data between an access point and plural stations, wherein said station
comprises:
a received data type detection unit which detects whether received data from said access point is a beacon frame;
a received power measurement unit which measures received power of the beacon frame, and measures received power of data sent
from said access point to said station after the beacon frame;
a beam gain estimation unit which determines the presence/absence of directional beam control in said access point, on the
basis of the received powers of the beacon frame and the data measured by said received power measurement unit; and
a transmitting power control unit which controls transmitting power for transmitting data to said access point, when said
beam gain estimation unit determines that said access point is performing directional beam control.
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