Patent Number: 6,167,237

Title: Universal wireless communication system, a transmission protocol, a wireless communication station, and a radio base station

Abstract: A universal wireless communication system comprising at least two wireless subsystems is proposed which is operated at the edge of spectral efficiency while at the same time allowing wireless communication stations to operate such that optimal power saving is obtained under acceptable transmission conditions. A radio base station of one of the subsystems measures whether a wireless communication station of another one of the subsystems causes adjacent channel interference in a channel its own subsystem. If so, the radio base station commands the wireless communication station of the other substation to adjust its spectral transmission characteristic such that the transmit spectrum becomes narrower. If no interference is detected the wireless communication station of the other subsystem is allowed to broaden its spectrum so that a less complex transmit signal processing, such as filtering, can be applied and thus power saving is achieved.

Inventors: Rapeli; Juha (Change, FR)

Assignee: U.S. Philips Corporation

International Classification: H04B 7/005 (20060101); H04B 015/00 ()

Expiration Date: 12/26/2017