Title :
PQWRR scheduling algorithm in supporting of DiffServ
Author :
Mao, Jianmin ; Moh, W.M. ; Wei, Belle
Author_Institution :
Dept. of Math. & Comput. Sci., San Jose State Univ., CA, USA
Abstract :
The differentiated services (DiffServ) routers provide per hop behavior (PHBs) to aggregate traffic for different levels of services, the scheduling algorithm used by the DiffServ routers is critical in implementing PHBs. This paper presents a new scheduling scheme, PQWRR that combines existing scheduling schemes, PQ (priority queuing) and WRR (weighted round robin). Our simulation results show that PQWRR provides best delay and jitter performance for EF (expedited forwarding) traffic and at the same time delivers guaranteed bandwidth to AF traffic. PQWRR not only solves the problems of existing PQ and WRR algorithms, but also provides best support for both EF and AF PHBs in the DiffServ domain
Keywords :
Internet; delays; jitter; performance evaluation; quality of service; queueing theory; telecommunication network routing; telecommunication traffic; DiffServ; DiffServ routers; IP networks; Internet; PQ algorithm; PQWRR scheduling algorithm; QoS; WRR algorithm; delay performance; differentiated services; expedited forwarding traffic; guaranteed bandwidth; jitter performance; network topology; per hop behavior; performance evaluation; priority queuing; service levels; simulation results; weighted round robin; Bandwidth; Delay; Diffserv networks; Harmonic analysis; Jitter; Quality of service; Round robin; Scheduling algorithm; Telecommunication traffic; Traffic control;
Conference_Titel :
Communications, 2001. ICC 2001. IEEE International Conference on
Conference_Location :
Helsinki
Print_ISBN :
0-7803-7097-1
DOI :
10.1109/ICC.2001.937326
