Design and Implementation of an Active RFID MAC Protocol

Active RFID can be well used in identifying, tracking and recording objects. Proper MAC protocol is needed for channel access and tag communication schedule. This paper presents a hybrid TDMA MAC protocol comprising of two component protocols - a contention protocol that provides effective operation under high density condition, and a TDMA allocation protocol that manages stable communication between reader and tags. Analysis shows that such protocol also provides well energy conserving. We also design an active RFID system platform suitable for such MAC protocol and other applications.