Patent ID: 8903394
Filing Date: 2014-12-02
Classification: H04B,H04W

Abstract:
1. A method for control of a handover of a mobile station in a wireless access system, comprising: receiving an uplink message from a mobile station at a first relay station via a wireless channel, wherein the uplink message includes a ranging request message or an uplink data burst, wherein the wireless channel includes an uplink channel and a downlink channel; measuring signal strength of the uplink message at the first relay station; analyzing and arbitrating the signal strength of the uplink message at the first relay station to determine whether to forward the uplink message to a base station; forwarding the uplink message from the first relay station to the base station via the wireless channel through a dedicated control information relay zone reserved for forwarding uplink control information after determining the signal strength of the uplink message measured at the first relay station exceeds a predetermined strong value; receiving the uplink message from at least one of the mobile station and the first relay station at the base station via the wireless channel; measuring signal strength of the uplink message(s) received at the base station; and analyzing and arbitrating the signal strength of the uplink message(s) received at the base station and link budgets at the base station to determine whether a handover of the mobile station involving the first relay station is required based at least in part on the measured signal strength.