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Assessment of parallel transmission capability using multiple standards (performance upper bound)

The previous result shows that intelligent selection of the most appropriate radio access network for successive downloads to a mobile user terminal significantly enhances performance compared with a conventional terminal. We envisage even greater benefits of multi-standard capability if we are able to concurrently download information over multiple standards. The average throughput rate available to a user is increased and concurrent download capability can reduce the delay associated with waiting for the completion of an on-going download.

The potential benefits of concurrent download capability were determined in the provision of a generic information download service to mobile commuters; passing through localised regions of UMTS coverage with ubiquitous GPRS coverage. The user terminal keeps track of the remaining download time of queued requests over each standard, and when an information download request is generated, selects the standard it believes will result in the earliest completion of the requested download. Results show that when a high and sustained level of demand is placed on the system from a user, concurrent download capability over the two standards offers significant benefits. Much lower delay values are experienced due to the parallel transmission capability and because of the fundamental increase in overall throughput capability.

Reported by

University of York
Heslington -
YO1 5DD York
United Kingdom
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