Patent ID: 6370369
Filing Date: 2002-04-09
Classification: H04B,H04L

Abstract:
Method to perform a transmit and receiving antenna diversity in-between a first network device (1) and a second network device (15) of a wireless network, characterized by the following steps:using an omni-directional antenna (10) of the first network device (1) to transmit a calibration signal from the first network device (1) to the second network device (15); identifying the best receiving antenna (x) of the second network device (15) by successively switching all directional antennas (21 to 28) and an omni-directional antenna (20) of the second network device (15) into its receiving path and respectively measuring the received signal quality, and setting said identified best receiving antenna (x) as transmit and receiving antenna of said second network device (15); using the set transmit and receiving antenna (x) of said second network device (15) to transmit a calibration signal from the second network device (15) to the first network device (1); and identifying the best receiving antenna (y) of the first network device (1) by successively switching all directional antennas (11 to 14) and said omni-directional antenna (10) of the first network device (1) into its receiving path and respectively measuring the received signal quality, and setting said identified best receiving antenna (y) as transmit and receiving antenna of said first network device (1).