A Power-Aware Technique to Manage Real-Time Database Transactions in Mobile Ad-Hoc Networks

本研究计画提出开发一个移动的多资料库管理系统的交易管理技术，并将能量限制、交易实时性限制及ad-hoc网路纳入考量。 该技术旨在减少整体能耗并提供各个移动的主机（MH）能耗的平衡，同时减少由于最后期限违反而必须中止的事务的数量。 它考虑了固定实时和软实时事务，以及MH可以处于的三种模式：活动、打盹和睡眠。 它将时间视为处理公司交易的最重要因素，而将能量视为处理软交易的最重要因素。 它使用这个原则来定位MH、调度事务和提交/中止事务。 它通过在全局事务中引入挂起状态来处理断开和迁移，以确保状态未知的移动的用户的事务不会被中止，直到它们阻碍其他事务的执行。 将开发一个原型，以评估所提出的技术在现实生活中的应用性能，并提供指导方针，以帮助用户和设计师。

This research project proposes to develop a transaction management technique for a mobile multidatabase management system that takes energy restriction, transaction real-time constraints, and ad-hoc networks into consideration. This technique is aimed at reducing the overall energy consumption and providing a balance in individual mobile host (MH) energy consumption, while at the same time reducing the number of transactions that must be aborted due to deadline violations. It considers both firm real-time and soft real-time transactions, and three modes that an MH can be in: active, doze, and sleep. It treats time as the most important factor in handling firm transactions while energy as the most important factor in handling soft transactions. It uses this principle to locate MHs, schedule transactions, and commit/abort transactions. It handles disconnection and migration by introducing a suspended state into global transactions to ensure that transactions of mobile users whose status is unknown will not be aborted until they obstruct the execution of other transactions. A prototype will be developed to evaluate the performance of the proposed technique for real-life applications and to provide guidelines to assist both users and designers.