To support mobile subscribers in pub/sub systems, existing approaches are mainly based on reactive methods (i.e., the message transfer occurs just after the mobile subscriber handoffs to a new broker). In this paper, we analyze a novel and efficient mobility extension based on a pro-active approach (i.e., the context transfer/caching occurs prior to the subscriber movement). We implemented both reactive and pro-active mobility extensions for JMS and conducted a range of experiments in a small testbed to compare the relative merits of each approach. Our experimental results show that a pro-active approach can provide fast handoff support with zero duplicated messages. It also achieves relatively higher throughput results and lower message loss compared to the reactive approach.

Additional Metadata
Persistent URL dx.doi.org/10.1109/WiMob.2008.19
Conference 4th IEEE International Conference on Wireless and Mobile Computing, Networking and Communication, WiMob 2008
Citation
Gaddah, A. (Abdulbaset), & Kunz, T. (2008). Subscriber mobility in pub/sub systems: Pro-active vs. reactive handoffs. Presented at the 4th IEEE International Conference on Wireless and Mobile Computing, Networking and Communication, WiMob 2008. doi:10.1109/WiMob.2008.19