Improving TCP Performance Over Wireless Networks With Collaborative Multi-Homed Mobile Hosts
Source: University of Michigan
Multi-homed mobile hosts situated in physical proximity may spontaneously team up to run high-bandwidth applications by pooling their low Wireless Wide-Area Network (WWAN) bandwidths together for communication with a remote application server and utilizing their high-bandwidth Wireless Local-Area Network (WLAN) in ad-hoc mode for aggregation and distribution of application contents among the participating mobile hosts. In this paper, the authors first describe the need for such a mobile collaborative community, or a community, in which multi-homed mobile hosts exploit the diversity of WWAN connections to improve a user-perceived bandwidth and network utilization. Then, they show that existing one-to-one communication protocols like TCP suffer significant performance degradation due to frequent packet reordering and heterogeneity of WWAN links in the community.