MACA-P: A MAC for Concurrent Transmissions in Multi-hop Wireless Networks

• Main Authors: ACHARYA, Arup, MISRA, Archan, BANSAL, Sorav
• Format: text
• Language: English
• Published: Institutional Knowledge at Singapore Management University 2003
• Subjects: Software Engineering
• Online Access: https://ink.library.smu.edu.sg/sis_research/703; https://ink.library.smu.edu.sg/context/sis_research/article/1702/viewcontent/MACA_P_afv.pdf
• Institution: Singapore Management University

This paper presents the initial design and performance study of MACA-P, a RTS/CTS based MAC protocol that enables simultaneous transmissions in multihop ad-hoc wireless networks. Providing such low-cost multihop and high performance wireless access networks is an important enabler of pervasive computing. MACA-P is a set of enhancements to the 802.11 DCF that allows parallel transmissions in many situations when two neighboring nodes are either both receivers or both transmitters, but a receiver and a transmitter are not neighbors. Like 802.11, MACA-P contains a contention-based reservation phase prior to data transmission. However, the data transmission is delayed by a control phase interval, which allows multiple sender-receiver pairs to synchronize their data transfers, thereby avoiding collisions and improving system throughput.