Date Added: Nov 2012
With the rapid permeation of smartphones and wireless sensors in society, smartphones are poised to become personal hubs connecting wireless sensors with users and the Internet. Due to frequent changes to applications and network conditions, wireless networks connecting a personal hub and wireless sensors must meet time-varying QoS requirements at minimal energy cost. This paper presents the architecture of a novel Protocol Service System (PSS) towards the vision of protocol service over the air. In contrast to traditional wireless networks where a single MAC protocol is statically selected a priori, PSS switches among multiple MAC protocols at run time to dynamically optimize power efficiency subject and meet current QoS requirements.