Title :
AFDX Wireless Scheduler and free bandwidth managing in 802.11e(HCCA)/AFDX network
Author :
Sambou, Bafing C. ; Peyrard, Fabrice ; Fraboul, Christian
Author_Institution :
IRIT/INPT-ENSEEIHT, Univ. of Toulouse, Toulouse, France
Abstract :
In this paper, we present a HCCA (HCF Controlled Channel Access) scheduler called AWS (AFDX Wireless Scheduler) which improves the performances of the HCCA Reference Scheduler (RS); in order to convey AFDX (Avionics Full DupleX switched Ethernet) traffics on an IEEE 802.11e WLAN and guarantee their QoS requirements (bandwidth, maximum latency and jitter). AWS is based on the classification of flows (priority class), on a retransmission policy of frames, on the frame deadlines and on the maximum jitter. We also present, in this paper, two strategies for managing the free bandwidth of each TXOP. The first (OAWS, Optimized AWS) uses the free bandwidth of TXOPs for transmitting frames in Critical or Retransmission state. The latest (AWS-RB, AWS with Release Bandwidth) releases the free bandwidth of TXOPs and schedules the following flows.
Keywords :
jitter; quality of service; radio networks; scheduling; telecommunication traffic; wireless LAN; AFDX wireless scheduler; AWS; HCCA reference scheduler; HCF controlled channel access scheduler; IEEE 802.11e HCCA-AFDX network; IEEE 802.11e WLAN; QoS requirement; TXOP; avionics full duplex switched Ethernet traffic; flows classification; frame retransmission policy; free bandwidth managing; maximum jitter; Bandwidth; IEEE 802.11e Standard; Jitter; Quality of service; Silicon; Throughput; Wireless communication; 802.11e; AFDX; HCCA; QoS; Scheduling;
Conference_Titel :
Wireless Communications and Mobile Computing Conference (IWCMC), 2011 7th International
Conference_Location :
Istanbul
Print_ISBN :
978-1-4244-9539-9
DOI :
10.1109/IWCMC.2011.5982860
