Title :
SNR based Admission Control for HCCA in IEEE 802.11e
Author :
Yoo, Jungho ; Lee, Seungbeom ; Park, Sin-Chong
Author_Institution :
Sch. of Eng., Inf. & Commun. Univ., Daejeon
Abstract :
Based on stations´ mobility and wireless channel characteristics, the physical rate based admission control (PRBAC) is developed to increase the efficiency for HCCA in 802.11e. However, PRBAC may cause high packet drop rate due to tight transmission opportunity (TXOP) duration. This packet retransmission may hinder QoS data from transmitting packets within delay bound. In this paper, SNR based admission control for HCCA is proposed which takes account of expected successful packet transmission duration including retransmission time. Simulation results show that proposed schemes guarantee QoS at the expense of the number of admitted stations irrespective of channel condition.
Keywords :
mobile radio; quality of service; telecommunication channels; telecommunication congestion control; wireless LAN; HCF controlled channel access; IEEE 802.11e; QoS; SNR based admission control; mobility channels; packet retransmission; physical rate based admission control; tight transmission opportunity; wireless channels; Admission control; Bit rate; Centralized control; Delay; Interference; Media Access Protocol; Quality of service; Signal to noise ratio; Wireless LAN; Wireless networks; 802.11e; Admission Control; HCCA; WLAN;
Conference_Titel :
Advanced Communication Technology, The 9th International Conference on
Conference_Location :
Gangwon-Do
Print_ISBN :
978-89-5519-131-8
DOI :
10.1109/ICACT.2007.358694
