Providing Seamless Communications in Mobile Wireless Networks
Bikram S Bakshi P Krishna N H Vaidya D K Pradhan
Department of Computer Science
Texas A M University
College Station TX
E mail fbbakshi pkrishna vaidya pradhang cs tamu edu
Phone
April
Technical Rep ort
Abstract
This paper presents a technique to provide seamless communications in mobile wireless networks
The goal of seamless communication is to provide disruption free service to a mobile user A
disruption in service could occur due to active hando s hando s during an active connection
Existing protocols either provide total guarantee for disruption free service incurring heavy network
bandwidth usage multicast based approach or do not provide any guarantee for disruption free
service forwarding approach There are many user applications that do not require a total
guarantee for disruption free service but would also not tolerate very frequent disruptions This
paper proposes a novel staggered multicast approach which provides a probabilistic guarantee for
disruption free service The main advantage of the staggered multicast approach is that it exploits
the performance guarantees provided by the multicast approach and also provides the much required
savings in the static network bandwidth
The problem of guaranteeing disruption free service to mobile users becomes more acute
when the static backbone network does not use any packet numbering or does not provide retrans
missions Asynchronous Transfer Mode networks the future of B ISDN display these properties
To make our study complete we present a possible implementation of our scheme for wireless ATM
networks
Initial Version of this pap er was submitted to Mobile Computing and Networking MCN in April
Research rep orted is supp orted in part by AFOSR under grant F and Texas Advanced Technology
Program under grant