Title :
A TXOP-based Scheduling Algorithm for Video Transmission in IEEE 802.11e Networks
Author :
Deng, Qianhua ; Cai, Anni
Author_Institution :
Sch. of Telecommun. Eng., Beijing Univ. of Posts & Telecommun.
Abstract :
The IEEE 802.11e proposes new features to support quality-of-service (QoS) in wireless local area network (WLAN). It provides several configurable parameters for four access categories (AC) to achieve differentiated service in the enhanced distributed channel access (EDCA) mechanism. However it is no longer effective when diverse burst flows present in the same AC. In this paper, an adaptive transmission opportunity (TXOP) allocation method, called surplus TXOP diverter (STXD), is designed to improve the performance of variable bit rate (VBR) video transmission. Through our simulation study, we demonstrate the STXD can provide good delay guarantee for burst video transmission without violating the long-term fairness. In multi-rate scenario, the STXD can solve the performance anomaly and guarantee time-fairness
Keywords :
DiffServ networks; error statistics; quality of service; scheduling; video communication; wireless LAN; EDCA mechanism; IEEE 802.11e network; QoS; STXD; VBR; WLAN; adaptive transmission opportunity; differentiated service; diverse burst flow; enhanced distributed channel access; quality-of-service; scheduling algorithm; surplus TXOP diverter; variable bit rate; video transmission; wireless local area network; Aggregates; Bit rate; Delay effects; Physical layer; Quality of service; Scheduling algorithm; Streaming media; Throughput; Videoconference; Wireless LAN;
Conference_Titel :
ITS Telecommunications Proceedings, 2006 6th International Conference on
Conference_Location :
Chengdu
Print_ISBN :
0-7803-9587-5
Electronic_ISBN :
0-7803-9587-5
DOI :
10.1109/ITST.2006.288969
