Admission control with priorities: approaces for multi-rate wireless system

Authors:
Deepak Ayyagari;Anthony Ephremides
Affiliations:
GTE Labs. Inc., Waltham, MA;Univ. of Maryland, College Park
Venue:
Mobile Networks and Applications
Year:
1999

Citing 6
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Abstract

Priority based link-bandwidth partitioning is required to support wireless multimedia services, having diverse QoS (delay, throughput) requirements, in mobile ad hoc networks with multimedia nodes. A new class of service disciplines, termed “batch and prioritize” or BP admission control (AC), is proposed. The BP algorithms use the delay tolerance of applications to batch requests in time slots. Bandwidth assignment is made either at the end of the slot, or during the slot, on a priority basis. Analytical and simulation models are developed to quantify the performance of the BP schemes. The results are compared with those obtained for a First-Come-First-Served (FCFS) service discipline. The class of BP schemes trade off the delay and loss tolerance of applications to improve the net carried traffic on the link. Further, such schemes enable an easy implementation for adaptive prioritization, where the degree of precedence given to an application varies with offered load and the link capacity.