WLAN MAC Layer Prediction/Collision Avoidance Mechanism Based on Service Attribute and Cross-Layer Control

Author

Zeng, Gui-gen ; Wu, Shuang ; Zheng, Bao-yu

Author_Institution

Nanjing Univ. of Posts & Telecommun., Nanjing, China

fYear

2010

fDate

23-25 Sept. 2010

Firstpage

1

Lastpage

4

Abstract

In VoIP over WLAN (known as VoWLAN) transmission, one of the main problems is that the supported voice channel capacity is relatively low. As an improvement to IEEE 802.11 MAC layer Carrier Sense Multi-Access/Collision Avoidance (CSMA/CA) algorithm, this paper presents Prediction/Collision Avoidance (P/CA) mechanism based on service attribute and cross-layer control. Under this mechanism, there is no collision and ACK confirmation frame could be removed. Simulation results show that compared with CSMA/CA, the proposed P/CA mechanism based on cross-layer control design can remarkably improve the channel capacity performance in VoWLAN transmission.

Keywords

Internet telephony; access protocols; channel capacity; telecommunication congestion control; wireless LAN; ACK; CSMA/CA; WLAN MAC; carrier sense multiaccess/collision avoidance algorithm; channel capacity; collision avoidance; cross-layer control; cross-layer control design; layer prediction; prediction/collision avoidance; service attribute; voice channel capacity; Algorithm design and analysis; Collision avoidance; Delay; IEEE 802.11 Standards; Multiaccess communication; Quality of service; Wireless LAN;

fLanguage

English

Publisher

ieee

Conference_Titel

Wireless Communications Networking and Mobile Computing (WiCOM), 2010 6th International Conference on

Conference_Location

Chengdu

Print_ISBN

978-1-4244-3708-5

Electronic_ISBN

978-1-4244-3709-2

Type

conf

DOI

10.1109/WICOM.2010.5601083

Filename

5601083