Atomicity Maintenance in EPCreport of ALE

The ALE is an interface of EPC network framework launched by EPCglobal, through which clients may obtain filtered consolidated EPC. The ALE provides a poll mode for creating a synchronous report. Under the EPC network framework the poll mode has to maintain atomicity for event cycle from different read cycle. It is big challenge for decentralized EPC network to long-term block channel for synchronous report. In this paper we propose two approach to make head against the challenge. The first way is to have storage in which relax the ALE engine for bursting in EPCs cycle after cycle. After all read cycle belong to same event cycle completed, the EPC engine sends EPC report to his consumer with asynchronous mode. The second strategy is to separate coarse event cycle into fine-grained cycle. After consumers receive all Sub-EPC report it reorganizes them into EPC report. We propose two algorithms and prove its efficient performance by simulation tool to show the performance efficiency.