2013/05/21 by Shengbo Chen, Chen, Shengbo, Tarun Bansal +7
Computer Science · Engineering · #Advanced MIMO Systems Optimization #Advanced Wireless Network Optimization #Energy Harvesting in Wireless Networks #FOS: Computer and information sciences #FOS: Electrical engineering #Information Theory (cs.IT) #Networking and Internet Architecture (cs.NI) #Systems and Control (eess.SY) #Wireless Networks and Protocols #electronic engineering #information engineering
paper · pdf · doi:10.48550/arxiv.1305.4993
openalex publication_date 2013/05/21 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
WiFi usage significantly reduces the battery lifetime of handheld devices\nsuch as smartphones and tablets, due to its high energy consumption. In this\npaper, we propose "Life-Add": a Lifetime Adjustable design for WiFi networks,\nwhere the devices are powered by battery, electric power, and/or renewable\nenergy. In Life-Add, a device turns off its radio to save energy when the\nchannel is sensed to be busy, and sleeps for a random time period before\nsensing the channel again. Life-Add carefully controls the devices' average\nsleep periods to improve their throughput while satisfying their operation time\nrequirement. It is proven that Life-Add achieves near-optimal proportional-fair\nutility performance for single access point (AP) scenarios. Moreover, Life-Add\nalleviates the near-far effect and hidden terminal problem in general multiple\nAP scenarios. Our ns-3 simulations show that Life-Add simultaneously improves\nthe lifetime, throughput, and fairness performance of WiFi networks, and\ncoexists harmoniously with IEEE 802.11.\n