Some computer science issues in ubiquitous computing
Communications of the ACM - Special issue on computer augmented environments: back to the real world
SpeckMAC: low-power decentralised MAC protocols for low data rate transmissions in specknets
REALMAN '06 Proceedings of the 2nd international workshop on Multi-hop ad hoc networks: from theory to reality
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The trend in wireless terminals has been to shrink a general-purpose desktop PC into a package that can be conveniently carried. Even PDAs have not ventured far from the general-purpose model, neither architectural nor in terms of usage model. Both the notebook and the personal computer generally use the same standard PC operating system such as Windows (CE) or Unix, same applications, use the same communication protocols and use the same hardware architecture. The only difference is that portable computers are smaller, have a battery, a wireless interface, and often use low power components [2]. Even though battery technology is improving continuously and processors and displays are rapidly improving in terms of power consumption; battery life and battery weight are issues that will have a marked influence on how hand-held computers can be used. Energy consumption is becoming the limiting factor in the amount of functionality that can be placed in these devices. More extensive and continuous use of network services will only aggravate this problem since communication consumes relatively much energy.