Channel assignment and MAC protocol for indoor wireless infrared ad hoc network

• Main Authors: Abu Bakar, Zulkarmawan, J. Green, Roger
• Format: Book Section
• Published: Penerbit UTM 2007
• Subjects: TK Electrical engineering. Electronics Nuclear engineering
• Online Access: http://eprints.utm.my/id/eprint/13408/

This chapter discusses our proposed channel assignment and reassignment method and MAC protocol algorithm for wireless infrared ad-hoc networking based on our transceiver design which utilises directional emitters and is fully controlled by microcontroller M16/C. In channel assignment two control handshake signal codes are used; the SCAN and INFORM signals which are conveyed on two different carrier frequencies/channels. The channel assignment and reassignment method together with the directional emitters enable to resolve the problem of cochannel interference. Five control handshake signals; two directional Request to Send (RTS), two directional Clear to Send (CTS) and a directional Acknowledgement (ACK), are used at Medium Access Control (MAC) protocol for resolving potential collisions among the transceivers. Two known popular problems in Ad-Hoc network; the exposed terminal and hidden terminal problems are efficiently managed by our MAC protocol