Multipath Routing with Adaptive Carrier Sense for Video Applications in Wireless Ad-hoc Networks

  • L. Cikovskis Riga Technical University
  • S. Vdovins Riga Technical University
  • I. Slaidins Riga Technical University


Video streaming over wireless ad-hoc networks containing mobile nodes is a quite complicated task because existing transport and routing protocols are not well suited for such task. In 802.11 standard MAC level transport protocol uses Carrier Sense Multiple Access with Collision Avoidance (CSMA/CA) method. This collision avoidance method as a side effect may prevent possibly successful data transmission events as well. This degrades delay time and data transmission rate which are very important parameters to maintain QoS in video streaming. In this paper we attempt to introduce multi-path routing combined with adaptive carrier sense range thus minimizing mutual interference caused by neighbouring nodes still keeping low level of collision rate. Ill. 13, bibl. 10 (in English; abstracts in English and Lithuanian).