Title :
QoS coordinated distributed scheduling for 802.16 mesh networks
Author :
Chou, Li-Der ; Lin, Yen-Cheng ; Chen, Zi-Hong
Author_Institution :
Dept. of Comput. Sci. & Inf. Eng., Nat. Central Univ., Jhongli, Taiwan
Abstract :
IEEE 802.16 WiMAX is one of the popular technologies in the field of wireless networking recently, where channel resource allocation and reservation have become key issues. In the paper a QoS Coordinated Distributed Scheduling scheme (QC-DSCH) based on priorities is proposed to meet the QoS requirements in MAC layer. There are three algorithms in QC-DCSH. Adjusting hold-off time (AH) algorithm exploits scheduling algorithm negotiation decision with three-way handshaking according to the traffic priorities. The allocating mini-slots (AM) algorithm gathers the availability mini-slots information of the neighbors to portion out the data frames adaptively, according to requesters demands with diverse priorities. The dynamically adjusting hold-off time (DH) algorithm can reflect the status of allocated mini-slots and adjusting the hold-off value. The proposed algorithm is able to reduce the average delay and increase the throughput of VoIP traffic.
Keywords :
WiMax; channel allocation; quality of service; scheduling; telecommunication standards; IEEE 802.16 WiMAX; QoS coordinated distributed scheduling; VoIP traffic; adjusting hold-off time algorithm; channel resource allocation; mesh networks; scheduling algorithm; wireless networking; Broadcasting; DH-HEMTs; Data communication; Delay; Mesh networks; Portable media players; Resource management; Scheduling algorithm; Telecommunication traffic; Throughput;
Conference_Titel :
Internet, 2009. AH-ICI 2009. First Asian Himalayas International Conference on
Conference_Location :
Kathmandu
Print_ISBN :
978-1-4244-4569-1
Electronic_ISBN :
978-1-4244-4570-7
DOI :
10.1109/AHICI.2009.5340357
