The power of smartphones
The power of smartphones
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DOI：
10.1007/s00530-013-0337-x
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发表时间：
2013-09
影响因子：
3.9
通讯作者：
Feng Xia;Ching-Hsien Hsu;Xiaojing Liu;Fangwei Ding;Wei Zhang
中科院分区：
文献类型：
--
作者：
Feng Xia;Ching-Hsien Hsu;Xiaojing Liu;Fangwei Ding;Wei Zhang
智能手机已经配备了多个无线网络接口，以满足其多样化的通信和联网需求。但随着智能手机越来越依赖无线网络连接来实现更多功能，对能源的需求也显著增加，这也成为人们探索智能手机真实的电量的极限。在本文中，我们首先回顾了典型的智能手机计算系统，智能手机的能源消耗，以及最先进的智能手机节能技术。然后，我们提出了一个位置辅助的Wi-Fi发现方案，发现最近的Wi-Fi网络接入点（AP）使用用户的位置信息。这允许用户在他/她到达最近的Wi-Fi网络AP时以智能方式切换到Wi-Fi接口。这样，我们就可以满足用户的带宽需求，并提供最佳的连接。此外，它避免了长时间处于空闲状态，并大大减少了移动终端上不必要的Wi-Fi扫描次数。我们的实验和模拟表明，我们的计划有效地节省能源的智能手机集成了Wi-Fi和蜂窝接口。
Smartphones have been shipped with multiple wireless network interfaces to meet their diverse communication and networking demands. However, as smartphones increasingly rely on wireless network connections to realize more functions, the demand of energy has been significantly increased, which has become the limit for people to explore smartphones’ real power. In this paper, we first review typical smartphone computing systems, energy consumption of smartphone, and state-of-the-art techniques of energy saving for smartphones. Then, we propose a location-assisted Wi-Fi discovery scheme, which discovers the nearest Wi-Fi network access points (APs) using the user’s location information. This allows the user to switch to the Wi-Fi interface in an intelligent manner when he/she arrives at the nearest Wi-Fi network AP. Thus, we can meet the user’s bandwidth needs and provide the best connectivity. Additionally, it avoids the long periods in idle state and greatly reduces the number of unnecessary Wi-Fi scans on the mobile device. Our experiments and simulations demonstrate that our scheme effectively saves energy for smartphones integrated with Wi-Fi and cellular interfaces.