Title

DCMA: A Label-Switching MAC for efficient packet forwarding in multi-hop wireless networks

Publication Type

Journal Article

Publication Date

11-2006

Abstract

This paper addresses the problem of efficient packet forwarding in a multihop, wireless "mesh" network. We present an efficient interface contained forwarding (ICF) architecture for a "wireless router," i.e., a forwarding node with a single wireless network interface card (NIC) in a multihop wireless network that allows a packet to be forwarded entirely within the NIC of the forwarding node without requiring per-packet intervention by the node's CPU. To effectively forward packets in a pipelined fashion without incurring the 802.11-related overheads of multiple independent channel accesses, we specify a slightly modified version of the 802.11 MAC, called data driven cut-through multiple access (DCMA) that uses multiprotocol label switching (MPLS)-like labels in the control packets, in conjunction with a combined ACK/RTS packet, to reduce 802.11 channel access latencies. Our proposed technique can be used in combination with "frame bursting" as specified by the IEEE 802.11e standard to provide an end-to-end cut-through channel access. Using extensive simulations, we compare the performance of DCMA with 802.11 DCF MAC with respect to throughput and latency and suggest a suitable operating region to get maximum benefits using our mechanism as compared to 802.11

Discipline

Software Engineering

Research Areas

Software Systems

Publication

IEEE Journal of Selected Areas in Communications

Volume

24

Issue

11

First Page

1995

Last Page

2004

ISSN

0733-8716

Identifier

10.1109/JSAC.2006.881636

Publisher

IEEE

Additional URL

http://dx.doi.org/10.1109/JSAC.2006.881636

Comments

Special Issue on “Multi-Hop Wireless Mesh Networks”