Paper Info
Title
Performance evaluation of real-time schedulers for HCCA function in IEEE 802.11e wireless networks
Abstract
IEEE 802.11 standard for wireless networks recently has been enhanced with IEEE 802.11e amendment to this protocol which introduces Quality of Service support. It provides differentiation mechanisms at the Medium Access Control layer, using two additional access functions: the Enhanced Distributed Channel Access (EDCA) function and the HCF Controlled Channel Access (HCCA) function. The EDCA function is based on a distributed control and enables prioritized channel access while the latter requires centralized scheduling and allows the applications to negotiate parameterized service guarantees. Only HCCA mechanism is suitable for serving traffic streams with real-time requirements such as multimedia applications and Voice Over IP. The IEEE 802.11e standard does not specify a mandatory HCCA scheduling algorithm, while it offers a reference scheduler. In this paper we analyze four HCCA schedulers which are alternative to the reference one and which offer real-time guarantees. A performance evaluation through simulation is conducted to show the main differences between the considered schedulers, including the reference one.
Year
DOI
Venue
2008
10.1145/1454586.1454588
Q2SWinet
Keywords
Field
DocType
centralized scheduling,hcf controlled channel access,edca function,real-time schedulers,hcca function,hcca schedulers,channel access,wireless network,hcca mechanism,reference scheduler,mandatory hcca scheduling algorithm,performance evaluation,additional access function,medium access control layer,scheduling algorithm,real time,scheduling algorithms,quality of service,voice over ip,col
Wireless network,IEEE 802.11e-2005,Scheduling (computing),Computer science,Computer network,Quality of service,Wireless Multimedia Extensions,IEEE 802,Access control,Voice over IP
Conference
Citations 
PageRank 
References 
6
0.52
10
Authors
2
Name
Order
Citations
PageRank
Gabriele Cecchetti1496.11
Anna Lina Ruscelli2486.06