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In this paper, we present an efficient model for real-time transaction management in a cellular environment with random frequent handoffs and disconnections. In this environment, the Mobile Support Subsystems (MSS) contain special Agents with caching techniques to contain the frequently accessed data from the Fixed Hosts (FH), which can be concurrently or exclusively accessed by transactions being executed in Mobile Hosts (MH) under the radio range of a particular MSS. Each Agent consists of a Cache Coordinator for communication with the Fixed Hosts and the Mobile Hosts and for disconnection and handoff management. The Fixed Hosts consist of a wired network with two types of server-Data Servers and Transaction Servers. The Transaction Servers contain a Transaction Manager for concurrency control and real-time transaction management. Using this schema, the transactions can continue in the Mobile Hosts regardless of random handoffs and frequent short disconnections enhancing real-time transactions and minimizing rollbacks.

procedia technology

An Efficient and Tolerant Model for Real-time Transaction Management in a Cellular Environment with Random Multiple Handoffs and Frequent Short Disconnections