Title :
Energy and throughput efficient transmission strategy with Cooperative Transmission in ad-hoc networks
Author :
Slimani, H. ; Escrig, B. ; Dhaou, Riadh ; Beylot, Andre-Luc
Author_Institution :
IRIT-ENSEEIHT, Univ. of Toulouse, Toulouse, France
Abstract :
In this paper, a new Medium Access Control (MAC) protocol combining Transmit Power Control (TPC), Rate Adaptation (RA) and Cooperative Transmission (CT) is proposed, in the context of multi-rate ad hoc networks. The protocol aims to achieve energy efficiency of data transmission while increasing the overall network throughput. The key idea of the protocol is to allow each wireless node to create a table with the optimal power-rate combinations based only on the network interface card specifications. In the presence of low data-rate nodes the network throughput is greatly degraded. To mitigate this well-known “rate anomaly” problem we use CT to replace the direct low-rate links by relayed high-rate links. By exchanging control frames and looking up the power-rate table, the wireless node chooses the most suitable transmission strategy (which consists of selecting the most optimal power-rate combination) for each data-frame as well as the transmission scheme (direct or relayed). Results reveal an important improvement in the overall network throughput as well as in the energy consumption with the new protocol compared to the scheme without TPC and without cooperation. Furthermore, simulation results show that our scheme deliver more data per unit of energy consumption than the IEEE 802.11 scheme.
Keywords :
access protocols; ad hoc networks; cooperative communication; energy conservation; energy consumption; power control; telecommunication power management; MAC protocol; TPC; cooperative transmission; high-rate links; low-rate links; medium access control protocol; multi-rate ad hoc networks; optimal power-rate combinations; power-rate table; rate adaptation; rate anomaly problem; throughput efficient transmission strategy; transmit power control; Energy consumption; Energy efficiency; Interference; Protocols; Relays; Signal to noise ratio; Throughput; cooperation; energy efficiency; power control; rate adaptation; throughput;
Conference_Titel :
Wireless Communications and Mobile Computing Conference (IWCMC), 2013 9th International
Conference_Location :
Sardinia
Print_ISBN :
978-1-4673-2479-3
DOI :
10.1109/IWCMC.2013.6583589