Stack-based scheduling for realtime processes
Real-Time Systems
Scheduling Algorithms for Multiprogramming in a Hard-Real-Time Environment
Journal of the ACM (JACM)
Integrating Multimedia Applications in Hard Real-Time Systems
RTSS '98 Proceedings of the IEEE Real-Time Systems Symposium
FHCF: a simple and efficient scheduling scheme for IEEE 802.11e wireless LAN
Mobile Networks and Applications
Design and performance analysis of the Real-Time HCCA scheduler for IEEE 802.11e WLANs
Computer Networks: The International Journal of Computer and Telecommunications Networking
ACM SIGMOBILE Mobile Computing and Communications Review
User-level performance evaluation of VoIP using ns-2
Proceedings of the 2nd international conference on Performance evaluation methodologies and tools
An overview of scheduling algorithms in wireless multimedia networks
IEEE Wireless Communications
A scheduling algorithm for QoS support in IEEE802.11 networks
IEEE Wireless Communications
MPEG-4 and H.263 video traces for network performance evaluation
IEEE Network: The Magazine of Global Internetworking
A greedy reclaiming scheduler for IEEE 802.11e HCCA real-time networks
Proceedings of the 14th ACM international conference on Modeling, analysis and simulation of wireless and mobile systems
| Hi-index | 0.00 |
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.