A distributed bandwidth management scheme for multi-hop wireless access networks

Author

Scopigno, Riccardo ; Vesco, Andrea

Author_Institution

Ist. Superiore Mario Boella, Turin, Italy

fYear

2011

fDate

4-8 July 2011

Firstpage

534

Lastpage

539

Abstract

A synchronous distributed coordination function called Time-Division Unbalanced Carrier Sense Multiple Access (TD-uCSMA) has been proposed to provide CSMA/CA with a mechanism for bandwidth management over single-hop wireless networks. TD-uCSMA relies on synchronization among nodes and the time-driven switching of Enhanced Distributed Channel Access (EDCA) parameters inside nodes. The solution, currently assessed in single-hop scenarios with CBR traffic profiles, is here validated on multi-hop scenarios and generalized to support heterogeneous traffic aggregates. This requires the definition of a bandwidth reservation model able to manage traffic aggregates with variable bit-rate and packet length. Notably the devised model shows a first order dependence only on bit-rate and on packet length statistics (mean and variance) due to a straight-forward consequence of the TD-uCSMA operating principles. Simulations validate this simple bandwidth reservation model and show its effectiveness over multi-hop wireless access networks.

Keywords

bandwidth allocation; carrier sense multiple access; radio access networks; telecommunication network management; telecommunication switching; telecommunication traffic; time division multiple access; CBR traffic profiles; CSMA/CA; TD-uCSMA; bandwidth reservation model; distributed bandwidth management scheme; enhanced distributed channel access; multihop wireless access network; single-hop wireless network; synchronous distributed coordination function; time-division unbalanced carrier sense multiple access; time-driven switching; traffic aggregate management; Aggregates; Bandwidth; Delay; Multiaccess communication; Quality of service; Spread spectrum communication; Wireless networks; Distributed Bandwidth Management; Multi-Hop Broadband Wireless Access; TD-uCSMA;

fLanguage

English

Publisher

ieee

Conference_Titel

Wireless Communications and Mobile Computing Conference (IWCMC), 2011 7th International

Conference_Location

Istanbul

Print_ISBN

978-1-4244-9539-9

Type

conf

DOI

10.1109/IWCMC.2011.5982590

Filename

5982590