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Strict Priority Scheduler for Rate Controlled Transmission

Authors:
Lukasz Chrost
Agnieszka Brachman

Keywords: packet scheduling, strict priority scheduler, Quality of Service, wireless network

Abstract:
The paper proposes a modification to the strict priority scheduler, to guarantee the Quality of Service (QoS) of a network with variable and undetermined bandwidth capacity. The proposed modifications make it possible to accomplish QoS along the path. The presented solution allows providing the minimum guaranteed transmission rates for all active flows with the respect to their priorities and to provide the fair share of the additional bandwidth. The scheduler also rejects flows, for which the minimum rate requirements exceed the available bandwidth. Moreover, a simple algorithm for mapping the WiMAX traffic classes to the strict n-priority scheduler bands is described. This allows providing WiFi - WiMAX internetworking with the QoS support. The presented test results show that the proposed scheduler preserves the defined, minimum transmission rates and improves the performance of the delay and throughput.

Pages: 1 to 6

Copyright: Copyright (c) IARIA, 2012

Publication date: February 29, 2012

Published in: conference

ISSN: 2308-4413

ISBN: 978-1-61208-183-0

Location: Saint Gilles, Reunion

Dates: from February 29, 2012 to March 5, 2012