An MILP-Based Cross-Layer Optimization for a Multi-Reader Arbitration in the UHF RFID System

摘要: In RFID systems, the performance of each reader such as interrogation range and tag recognition rate may suffer from interferences other readers. Since interference can be mitigated by output signal power control, spectral and/or temporal separation among readers, system depends on how to adapt various arbitration metrics time, frequency, environment. However, complexity difficulty optimization problem increase with respect variety metrics. Thus, most proposals in previous study have been suggested primarily prevent collision consideration one or two this paper, we propose a novel cross-layer design based concept combining time division, frequency control not only solve problem, but also achieve multiple objectives minimum delay, maximum utilization, energy efficiency. Based priority objectives, our optimizes sequentially means mixed-integer linear programming. spite multi-stage optimization, is formulated concise single mathematical form properly assigning weight objective. Numerical results demonstrate effectiveness proposed design.