Designing an asynchronous group communication middleware for wireless users

We evaluate an asynchronous gossiping middleware for wireless users that propagates messages from any group member to all the other group members. This propagation can either be implemented through distributed mechanisms or can be mediated through servers. Our analysis of asynchronous mechanisms using wireless user availability traces from an university, corporation and a hot spot federation shows that the fundamental impediment to the system performance is the wireless user availability patterns. We then investigate the relative performance for several distributed as well as server mediated approaches. We show that pull mechanisms effectively randomizes the times when messages are propagated and thus achieves better performance than push based mechanisms. We then develop an adaptive approach that customizes the propagation frequency using the last session duration and show that this mechanism exhibits good performance when the required propagation intervals are large. We also show t...

• Type: Conference
• Year: 2009
• Where: MSWIM
• Authors: Xuwen Yu, Surendar Chandra
• Keywords: Asynchronous Gossiping Middleware, Modelling And Simulation, MSWIM 2009, Wireless User, Wireless User Availability