Title :
Decentralized Cross-Layer Optimization for Multichannel Aloha Wireless Networks
Author :
Miao, Guowang ; Li, Ye ; Swami, Ananthram
Author_Institution :
Georgia Inst. of Technol., Atlanta
Abstract :
While most existing channel aware Aloha schemes focus on wireless networks where each user intends to send only one traffic flow, and interferes with all the other users, some wireless networks may have more complicated traffic distribution and the transmissions of different users may interfere with different groups of users. In this paper, we consider schemes for the decentralized cross-layer optimization of multichannel random access, in which users are not necessarily within the transmission ranges of all other users, and each user may choose to send packets to or receive packets from different users simultaneously. With cross-layer design, users are configured according to local neighborhood information to adapt to inhomogeneous network characteristics. It is demonstrated by simulation that the proposed scheme significantly outperforms existing channel aware Aloha schemes due to its exploitation of both multiuser diversity and the inhomogeneous characteristics of traffic distribution in the network.
Keywords :
broadband networks; radio networks; telecommunication traffic; channel aware Aloha schemes; decentralized cross-layer optimization; multichannel Aloha wireless networks; multiuser diversity; traffic distribution; Computer networks; Cross layer design; Distributed computing; Feedback; Mobile ad hoc networks; Telecommunication network reliability; Telecommunication traffic; Wireless communication; Wireless networks; Wireless sensor networks;
Conference_Titel :
Global Telecommunications Conference, 2007. GLOBECOM '07. IEEE
Conference_Location :
Washington, DC
Print_ISBN :
978-1-4244-1042-2
Electronic_ISBN :
978-1-4244-1043-9
DOI :
10.1109/GLOCOM.2007.847