Patent ID: 7319684

Claim:
A communication system comprising: one or more user terminals, each of the one or more user terminals having a non-directional antenna; one or more access points, each of the one or more access points having a directional antenna and a transmit power control function; and a management server, wherein the management server is configured to control transmission between the one or more access points and the one or more user terminals using control information based on a transmission queue for measuring downlink traffic and a receiving queue for measuring uplink traffic, wherein during a downlink period, control by the management server allows the one or more access points to do concurrent transmission to corresponding ones of the one or more user terminals and prevents the one or more user terminals from transmitting at least of part of data to be transmitted therefrom, and during an uplink period, control by the management server allows one user terminal at a time to transmit, and wherein uplink transmit/receive power and downlink transmit/receive are asymmetric.