Stable Move Algorithm (SMA) for BW allocation in wireless mobile WiMAX networks 802.16e

Current wireless 4G networks as WiMAX (802.16 d and e) must guarantee quality-of-service (QoS) for fixed and mobile subscribers(SS´s). Due to the unpredictable nature of the mobile users in 802.16e, it´s challenging to maintain fairness and high bandwidth utilization concurrently while ensuring that QoS requirements are maintained for the different connections. As a user´s location changes, so does his consumption of network resources. In this paper we are proposing the Stable-Move Algorithm (SMA) in which a fairness factor is adopted between different WiMAX cell regions. A scheme that will guarantee a fixed and stable connection rate regardless of the location of the mobile SS in the cell is proposed, in which a tradeoff between fairness, high bandwidth allocation and stable connection is maintained. Simulation results showed that our proposed scheme reduced the variance in the SS´s connection delay when compared to other bandwidth allocation algorithms (BWA´s), while at the same time providing fairness between SSs located in the different regions of the cell.