3G/WLAN网络终端能量感知的动态负载均衡机制

Energy-aware dynamic load balance mechanism in integrated 3G/WLAN networks

针对3G/WLAN网络中移动终端能量局限带来的无线网络资源浪费问题,提出了一种终端能量感知的动态负载均衡机制。利用自适应能量感知模型,对终端当前剩余能量可用时间做出近似估算。结合终端的运动状态及网络服务能力,有选择性的将WLAN中的低能量终端用户业务链接切换到3G网络中,缓解网络中的局部热点,提高网络资源有效利用率。仿真结果表明,该机制能够显著降低网络中各个无线接入点的工作负荷,有效减少了拥塞发生的概率。

Aiming at sowing the problem that the resource utilization descending severely produced by mobile end-user in 3G/ WLAN wireless networks, a novel energy-aware dynamic load balance mechanism is proposed. Firstly, a self-adaption energy es timation model is used to achieve an approximate estimation with respect to the residual energy. On this basis, combined with motion state of terminal and network service ability, the services of mobile end-user devices with low available time in WLAN are transferred to 3G environment selectively, in consideration of the residual energy of these end-user devices. The objective is to alleviate local hot-spots in a network, thus the resource utilization efficiency is enhanced. Simulation analysis demonstrates that the proposed mechanism achieves significant performance improvement in terms of the decrease in access point load, as well as congestion avoidance in a 3G/WEAN integrated network.