Virtual circuit switching concept in ad-hoc networking.
Thesis DisciplineComputer Science
Degree GrantorUniversity of Canterbury
Degree NameMaster of Science
This thesis investigates issues of implementing virtual circuit switching in an ad–hoc network. Traditionally, an ad–hoc network uses datagram switching for transmitting a message which is many packets long. Two main challenges for implementing virtual circuit switching in an ad–hoc network are: (1) finding a medium access control (MAC) protocol that supports “virtual circuit” and (2) dealing with the rapid changes of network topology. A major advantage of using virtual circuit switching is its capability to provide Quality of Service during a communication session. Ad–hoc Virtual Switching Routing (AVSR) protocol is a cross–layered traffic control protocol developed to demonstrate virtual circuit switching in an ad–hoc network. It is a reactive routing protocol running over a self–administrative Time Division Multiple Access (TDMA) MAC protocol. The evaluation of AVSR shows it is applicable to implement virtual circuit switching in an ad–hoc network, however its performance degrades significantly as the number of nodes/terminals in the network increases. The conclusion of this thesis gives recommendations for future research of virtual circuit switching in ad–hoc networks.