Patent ID: 8265702

Claim:
A method implemented in an access point (AP) for wireless communication with at least one wireless transmit/receive unit (WTRU), comprising: transmitting a beacon signal periodically among a plurality of sectors, each sector having its own sector identity, the beacon signal being periodically received at least once in a beacon period and the beacon period comprising a plurality of beacon service periods for all sectors; determining a scheduling value to indicate a number W of inactive beacon periods for a first sector to at least one WTRU located in the first sector; transmitting a beam access control (BAC) signal via at least one directional beam in a sector in which the first WTRU is located during a beacon service period, the BAC signal indicating allowance or disallowance of transmission of a signal from the first WTRU in the sector during a post-beacon period, the post-beacon period remaining after the beacon service periods for all sectors; and transmitting the scheduling value with the sector identity for the first sector, such that a variable beacon period is established for the first sector, enabling the at least one WTRU located in the first sector to enter a sleep mode for an adjustable period of time.