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The active badge location system
A novel system for the location of people in an office environment is described. Members of staff wear badges that transmit signals providing information about their location to a centralized…
Virtual Network Computing
- T. Richardson, Q. Stafford-Fraser, Kenneth R. Wood, A. Hopper
- Computer ScienceIEEE Internet Comput.
The structure of the VNC protocol is described, and the ways the authors use VNC technology now and how it may evolve further as new clients and servers are developed are discussed.
The Anatomy of a Context-Aware Application
- A. Harter, A. Hopper, Pete Steggles, Andy Ward, P. Webster
- Computer ScienceWirel. Networks
- 1 August 1999
A sensor-driven, or sentient, platform for context-aware computing that enables applications to follow mobile users as they move around a building and presents it in a form suitable for application programmers is described.
A new location technique for the active office
The authors present a novel sensor system, suitable for large-scale deployment in indoor environments, which allows the locations of people and equipment to be accurately determined and describes some of the context-aware applications that might make use of this fine-grained location information.
Implementing a Sentient Computing System
An enhanced version of AT&T Laboratories Cambridge's sentient computing system, which uses sensors to update a model of the real world, is installed throughout an office building.
Broadband ultrasonic location systems for improved indoor positioning
Broadband ultrasonic transmitter and receiver units have been developed and characterized and the utilization of these units to construct two positioning systems with different architectures serves to highlight and affirm the concrete, practical benefits of broadband ultrasound for locating people and devices indoors.
Predicting the Performance of Virtual Machine Migration
- Sherif Akoush, R. Sohan, A. Rice, A. Moore, A. Hopper
- Computer ScienceIEEE International Symposium on Modeling…
- 17 August 2010
This paper characterise the parameters affecting live migration with particular emphasis on the Xen virtualisation platform and provides 2 simulation models that are able to predict migration times to within 90% accuracy for both synthetic and real-world benchmarks.
Scalable, Distributed, Real-Time Map Generation
An algorithm for keeping digital maps up-to-date is developed, using ordinary vehicles making normal journeys rather than fleets of dedicated probe vehicles, however, further development is required to address several remaining challenges.
A distributed location system for the active office
The article describes the technology of a system for locating people and equipment and the design of a distributed system service supporting access to that information, and the application interfaces made possible by or that benefit from this facility.
Piconet: embedded mobile networking
- F. Bennett, David Clarke, Joseph B. Evans, A. Hopper, Alan Jones, D. Leask
- Computer ScienceIEEE Wirel. Commun.
- 1 October 1997
This article outlines the Piconet system, under development at the Olivetti and Oracle Research Laboratory (ORL), and discusses the motivation for providing this low-level "embedded networking", and describes their experiences of building such a system.