TY - JOUR
T1 - Cooperative ad hoc networks for energy and delay efficient content distribution with fast channel variations
AU - Atat, Rachad
AU - Yaacoub, Elias E.
AU - Alouini, Mohamed-Slim
AU - Abu-Dayya, Adnan A.
N1 - KAUST Repository Item: Exported on 2020-10-01
Acknowledgements: This work was made possible by NPRP grant # 09-180-2-078 from the Qatar National Research Fund (a member of the Qatar Foundation). The statements made herein are solely the responsibility of the authors.
PY - 2012/11/20
Y1 - 2012/11/20
N2 - Cooperative ad hoc networks for the efficient distribution of content of common interest are studied in the case of fast channel variations. Mobiles are grouped into cooperative clusters for the purpose of receiving the content with optimized energy efficiency. Data are sent to mobile terminals on a long range (LR) link, and then, the terminals exchange the content by using an appropriate short range wireless technology. When channel state information is available for the LR links, unicasting is used on the LR. When accurate channel state information is not available, threshold-based multicasting is implemented on the LR. Energy minimization is formulated as an optimization problem for each scenario, and the optimal solutions are determined in closed form in scenarios with fast channel variations. Results show significant energy savings in the proposed schemes compared with the noncooperative case and other previous related work. Furthermore, the energy minimizing solutions are shown to lead to reduced delay in the content distribution process. Practical implementation aspects of the proposed methods are also discussed. © 2012 John Wiley & Sons, Ltd.
AB - Cooperative ad hoc networks for the efficient distribution of content of common interest are studied in the case of fast channel variations. Mobiles are grouped into cooperative clusters for the purpose of receiving the content with optimized energy efficiency. Data are sent to mobile terminals on a long range (LR) link, and then, the terminals exchange the content by using an appropriate short range wireless technology. When channel state information is available for the LR links, unicasting is used on the LR. When accurate channel state information is not available, threshold-based multicasting is implemented on the LR. Energy minimization is formulated as an optimization problem for each scenario, and the optimal solutions are determined in closed form in scenarios with fast channel variations. Results show significant energy savings in the proposed schemes compared with the noncooperative case and other previous related work. Furthermore, the energy minimizing solutions are shown to lead to reduced delay in the content distribution process. Practical implementation aspects of the proposed methods are also discussed. © 2012 John Wiley & Sons, Ltd.
UR - http://hdl.handle.net/10754/562416
UR - http://doi.wiley.com/10.1002/wcm.2327
UR - http://www.scopus.com/inward/record.url?scp=84871717774&partnerID=8YFLogxK
U2 - 10.1002/wcm.2327
DO - 10.1002/wcm.2327
M3 - Article
SN - 1530-8669
VL - 12
SP - 1635
EP - 1651
JO - Wireless Communications and Mobile Computing
JF - Wireless Communications and Mobile Computing
IS - 18
ER -