inMultihopWirelessNetworks.PDF

Ensuring Coexistence among Games and Downloads in Multihop Wireless Networks Claudio E. Palazzi, Armir Bujari Gustavo Marfia, Marco Roccetti University of Padua University of Bologna Via Trieste 63 - 35123 - Padova - Italy Mura Anteo Zamboni 7 - 40127 Bologna - Italy Email: cpalazzi,abujari@math.unipd.it Email: marfia,roccetti@cs.unibo.it Abstract—Mobile communication devices are expected to over- In summary, the coexistence between TCP based content take traditional desktop PCs and become the dominant point download and online game flows over multihop wireless net- of entry to the Internet. This technology shift has boosted user works embodies a tough technical challenge that deserves sci- demand for multimedia applications and services which are now entific investigation. Although extensive research has been de- typically accessed through the wireless interface. Users expect to voted to improve TCP-based flow performance over multihop be always connected and able to run a variety of applications networks, little has been done to support real-time applications which sometimes impose contrasting requirements. Of particular research interest in this scenario is the coexistence between such as online game flows in this heterogeneous context [9]. two popular categories of traffic: elastic and real-time, both of Recently, research studies demonstrated that neither classic them covering a wide range of user applications. In this paper, nor enhanced existing variants of TCP and 802.11 are able we investig