Using space and network diversity combining to solve masked node collision in wireless adhoc network

Document Type

Conference Proceeding

Publication Date

12-1-2005

Abstract

In wireless ad hoc network, the traditional Carrier Sensing Multiple Access/Collision Avoidance (CSMA/CA) protocol cannot solve the masked node problem, which affect the network performance greatly. Our proposed collision separation technique overcomes the shortcoming of the IEEE 802.11 Request-To-Send-Clear-to-Send (RTS-CTS) handshake by combining the space diversity provided by the antenna array and network diversity provided by the Media Access Control (MAC) layer. In this work, the colliding packets caused by masked nodes are not discarded but stored and combined with the selected retransmission packets to separate the data from different nodes. The steady states of the nodes in the network are analyzed via a Markov chain model . The network goodput and delay performance are also investigated. Compared to network assisted diversity multiple access (NDMA), our proposed method, i.e., space and network diversity combination SNDC for short can provide higher throughput and lower delay performance. © 2005 IEEE.

Identifier

33745121591 (Scopus)

Publication Title

2005 IEEE Networking Sensing and Control Icnsc2005 Proceedings

External Full Text Location

https://doi.org/10.1109/ICNSC.2005.1461347

First Page

1075

Last Page

1080

Volume

2005

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