ITR: Efficient Power-Aware Data Access in Pervasive Computing Environments

随着基于Internet的技术的迅速出现和普适计算的爆炸性增长，通过电池供电的移动的设备访问信息的客户将呈指数级增长。 由于带宽和功率的限制，针对有线网络提出的数据访问技术对于移动的环境可能是不可行的。 因此，考虑到移动的环境的限制，重新评估并可能重新设计数据访问策略以有效地利用带宽和功率已经变得必要。在单跳移动的环境中，研究将解决与广播和缓存技术相关的问题，即，能量消耗问题、查询等待时间问题、带宽利用问题和可伸缩性问题。在多跳移动的环境中的研究集中在设计和评估合作缓存技术，以减少带宽和功耗，并解决可扩展性，缓存一致性和安全问题。 将使用一个试验平台以综合方式评价拟议的数据访问机制，并评价各种技术对整个系统性能的影响。 研究结果将对普适计算的商业、民用和军事应用产生重要影响。

With the rapid emergence of Internet-based techniques and theexplosive growth of pervasive computing, there will be an exponential increase of customers accessing information through battery powered mobile devices. Data access techniques proposed for wired networks may not be feasible for mobile environments due to the limitations of bandwidth and power. Therefore, it has become necessary to re-evaluate and possibly redesign data access strategies to efficiently utilize bandwidth and power considering the limitations of mobile environments. In single-hop mobile environments, the research will address the issues associated with broadcasting and caching techniques, i.e., the energy consumption issue, the query latency issue, the bandwidth utilization issue, and the scalability issue. The research in multi-hop mobile environments concentrates on designing and evaluating cooperative caching techniques to reduce the bandwidth and power consumption, and to address scalability, cache consistency, and security issues. A testbed will be used to evaluate the proposed data access mechanisms in an integrated manner and evaluate the effects of various techniques on the overall system performance. The research results will have significant impacts on making pervasive computing more affordable to the increasing customer demands and more amenable to commercial, civilian, and military applications.