Dependable group-oriented mobile transactions

Several mobile services, such as mobile auctions, mobile financial services, and multi-party interactive games, require support for transactions. This is a difficult challenge due to both intermittent connectivity and potential failures in part(s) of wireless infrastructure. In this paper, we present a multi-network access based wireless architecture and related protocols to enhance the dependability performance for transactions. The key idea is to allow group users to utilize access to one or more wireless networks to complete different steps of a transaction. We also present some preliminary results for transaction performance across multiple networks.