Interference Tolerant Power Control Algorithm of Ranging Process in IEEE 802.16 Relay System

This paper considers the ranging process of IEEE 802.16 system in relay system. An interference problem between MS-BS ranging (i.e. ranging between mobile station and base station) and MS-RS ranging (i.e. ranging between mobile station and relay station), which is caused by the introduction of relay systems, is addressed. A solution of the interference problem is provided by proposing a new transmit power control algorithm. Computer simulation shows the performance of the ranging process in relay system, and validates the efficiency of the proposed transmission power control algorithm.