TY - JOUR
T1 - Optimal transmission range for wireless ad hoc networks based on energy efficiency
AU - Deng, Jing
AU - Han, Yunghsiang S.
AU - Chen, Po-Ning
AU - Varshney, Pramod K.
N1 - Funding Information:
Paper approved by Y. Fang, the Editor for Wireless Communication of the IEEE Communications Society. Manuscript received December 13, 2004; revised April 7, 2006. This work is supported in part by the National Science Council of Taiwan, R.O.C., under Grant NSC 90-2213-E-260-007 and Grant NSC 91-2213-E-260-021, and in part by Chung-Shan Institute of Science and Technology, Taiwan, under Grant XC93B95P. The work of J. Deng was supported in part by Louisiana Board of Regents under RCS Grant LEQSF (2005-08)-RD-A-43. This paper was presented in part at the IEEE Wireless Communications and Networking Conference, Atlanta, GA, March 2004.
PY - 2007/9
Y1 - 2007/9
N2 - The transmission range that achieves the most economical use of energy in wireless ad hoc networks is studied for uniformly distributed network nodes. By assuming the existence of forwarding neighbors and the knowledge of their locations, the average per-hop packet progress for a transmission range that is universal for all nodes is derived. This progress is then used to identify the optimal per-hop transmission range that gives the maximal energy efficiency. Equipped with this analytical result, the relation between the most energy-economical transmission range and the node density, as well as the path-loss exponent, is numerically investigated. It is observed that when the path-loss exponent is high (such as four), the optimal transmission ranges are almost identical over the range of node densities that we studied. However, when the path-loss exponent is only two, the optimal transmission range decreases noticeably as the node density increases. Simulation results also confirm the optimality of the per-hop transmission range that we found analytically.
AB - The transmission range that achieves the most economical use of energy in wireless ad hoc networks is studied for uniformly distributed network nodes. By assuming the existence of forwarding neighbors and the knowledge of their locations, the average per-hop packet progress for a transmission range that is universal for all nodes is derived. This progress is then used to identify the optimal per-hop transmission range that gives the maximal energy efficiency. Equipped with this analytical result, the relation between the most energy-economical transmission range and the node density, as well as the path-loss exponent, is numerically investigated. It is observed that when the path-loss exponent is high (such as four), the optimal transmission ranges are almost identical over the range of node densities that we studied. However, when the path-loss exponent is only two, the optimal transmission range decreases noticeably as the node density increases. Simulation results also confirm the optimality of the per-hop transmission range that we found analytically.
KW - Energy efficiency
KW - Optimal transmission range
KW - Wireless ad hoc networks
UR - http://www.scopus.com/inward/record.url?scp=34648823484&partnerID=8YFLogxK
U2 - 10.1109/TCOMM.2007.904395
DO - 10.1109/TCOMM.2007.904395
M3 - Article
AN - SCOPUS:34648823484
SN - 0090-6778
VL - 55
SP - 1772
EP - 1782
JO - IEEE Transactions on Communications
JF - IEEE Transactions on Communications
IS - 9
ER -