Dynamic routing of customers with QoS rank among heterogeneous servers
by Jafar Razmi, Seyed Behrouz Khodadadi
International Journal of Electronic Customer Relationship Management (IJECRM), Vol. 4, No. 4, 2010

Abstract: This paper is concerned with routing problem with consideration of quality of service (QoS). In the absence of comprehensive analytical methods in this area because of high complexity of such systems, managers need applied approaches to help them in making appropriate routing decisions. We consider a set of n heterogeneous servers which differ in service time and QoS. Customers are also divided into m levels with regard to their service ranks. We present a threshold policy for heterogeneous servers (TPHS) which depends on number of different customers in the queues as a practical and flexible dynamic routing policy. Two performance measures are discussed: the QoS and the average waiting time (AWT). The TPHS is compared with both a static routing policy which maximises the QoS level and the minimum expected delay (MED) policy which minimises the AWT in the queues. The TPHS is optimised using stochastic simulated annealing (SSA). Numerical example validate that the proposed TPHS is more effective than other policies if both measures are regarded.

Online publication date: Wed, 27-Oct-2010

The full text of this article is only available to individual subscribers or to users at subscribing institutions.

 
Existing subscribers:
Go to Inderscience Online Journals to access the Full Text of this article.

Pay per view:
If you are not a subscriber and you just want to read the full contents of this article, buy online access here.

Complimentary Subscribers, Editors or Members of the Editorial Board of the International Journal of Electronic Customer Relationship Management (IJECRM):
Login with your Inderscience username and password:

Username:        Password:          Forgotten your password?

Want to subscribe?
A subscription gives you complete access to all articles in the current issue, as well as to all articles in the previous three years (where applicable). See our Orders page to subscribe.

If you still need assistance, please email subs@inderscience.com