Abstract
In this paper, we propose a new time synchronization method for femtocells connected to the core network through IEEE 802.11 based wireless link. In the proposed method, the time information is transmitted to a femtocell via the wireless backhaul using modified IEEE 802.11 beacon frames, and a least squared based estimation method is used to reduce the timing jitter at the femtocell. Through simulations, it is shown that the femtocells using the proposed algorithm satisfy the time accuracy specification for M-WiMAX.
