On optimizing energy consumption for mobile handsets
On optimizing energy consumption for mobile handsets
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DOI：
10.1109/tvt.2004.836966
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发表时间：
2004-11
影响因子：
6.8
通讯作者：
Yang Xiao;F. H. Li;Yi Pan;Kui Wu;Jie Li
中科院分区：
文献类型：
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作者：
Yang Xiao;F. H. Li;Yi Pan;Kui Wu;Jie Li
为了减少能源消耗（EC），移动电话系统可以这样设计：当移动电话中的数据接收单元接收和监控数据包时，手机的其余部分（即处理单元和用户界面）被关闭到睡眠模式。在本文中，我们研究了手机其他部分应该唤醒的时间。从节能和丢包概率（PDP）两方面对几种方案（即Always-ON、Always-OFF、Wake-up upon Arrival、Wake-up upon Full和分数阈值方案）进行了研究和比较。我们解析地给出了所有这些方案的总EC。此外，我们展示了如何为分数阈值方案选择最优阈值，以解决以下两个优化问题：1)在PDP上有界的情况下最小化接通率，2)在PDP上有界的情况下最小化总EC。研究表明，分数阈值方案是最佳方案。仿真验证了分析模型的正确性。
To reduce energy consumption (EC), a mobile handset system can be designed in such a way that while the data-receiving unit in a mobile handset is receiving and monitoring data packets, the rest part of the handset (i.e., a processing unit and a user interface) is switched off into a sleep mode. In this paper, we study the timing when the rest part of the handset should wake up. Several schemes (i.e., Always-ON , Always-OFF, Wake-up upon Arrival, Wake-up upon Full, and the fractional threshold scheme) are studied and compared in terms of energy saving and the packet dropping probability (PDP). We formulate the total EC for all theses schemes analytically. Furthermore, we show how to choose optimal thresholds for the fractional threshold scheme for the following two-optimization problems: 1) minimizing the switch-on rate with a bound on the PDP and 2) minimizing the total EC with a bound on the PDP. Our study shows that the fractional threshold scheme is the best scheme. Simulations are carried out to validate analytic models.