The Community for Technology Leaders
Subscribe
Issue No.07 - July (2010 vol.9)
pp: 969-981
Ghasem Naddafzadeh-Shirazi , National University of Singapore, Singapore
Peng-Yong Kong , National University of Singapore, Singapore
Chen-Khong Tham , National University of Singapore, Singapore
ABSTRACT
Cooperation between wireless nodes to retransmit data for the other users introduces multiuser diversity to a wireless network and increases the system throughput. In this paper, the optimal cooperative relaying strategies in the MAC layer are analyzed while considering the UWB unique properties such as fine ranging and immunity to small scale fading. Specifically, the optimal cooperation strategies in the absence of coordination message passing between relays are determined in order to maximize the system throughput while reducing the control packet overhead. Mobile networks are also considered, in which the relays should exchange their ranging information together in some update intervals. The optimal update interval length is calculated in order to maximize the system throughput. More importantly, we show that if this optimal update interval is used, the optimal cooperation strategies in the mobile case will be similar to those in the static network. Two different relay selection schemes, namely proactive and reactive settings, are considered. Analysis and simulations confirm that the proposed UWB-based Cooperative Relaying Scheme, UCoRS, can achieve a considerable diversity gain in spite of its implementation simplicity. UCoRS also minimizes the number of control packets that are required for the optimal cooperation, which leads to the energy efficiency in the UWB costly data-receiving process.
INDEX TERMS
Cooperative relaying, UWB MAC, UWB wireless communication.
CITATION
Ghasem Naddafzadeh-Shirazi, Peng-Yong Kong, Chen-Khong Tham, "Optimal Cooperative Relaying Schemes in IR-UWB Networks", IEEE Transactions on Mobile Computing, vol.9, no. 7, pp. 969-981, July 2010, doi:10.1109/TMC.2010.43
REFERENCES
 [1] IEEE Std. 802.15.4a-2007 (Amendment to IEEE Std. 802.15.4-2006), IEEE Standard Part 15.4: Wireless Medium Access Control (MAC) and Physical Layer (PHY) Specifications for Low-Rate Wireless Personal Area Networks (WPANs), IEEE, pp. 1-203, 2007. [2] H. Adam, C. Bettstetter, and S.M. Senouci, "Adaptive Relay Selection in Cooperative Wireless Networks," Proc. IEEE Int'l Symp. Personal, Indoor and Mobile Radio Comm. (PIMRC '08), 2008. [3] H. Arslan, Z.N. Chen, and M.-G. Di Benedetto, Ultra Wideband Wireless Communication, chapter 14, pp. 315-340. Wiley, 2006. [4] A. Azgin, Y. Altunbasak, and G. AlRegib, "Cooperative MAC and Routing Protocols for Wireless Ad Hoc Networks," Proc. IEEE Global Telecomm. Conf. (GLOBECOM '05), pp. 2854-2859, 2005. [5] M.-G. Di Benedetto, L.D. Nardis, G. Giancola, and D. Domenicali, "The ALOHA Access (UWB)$^{2}$ Protocol Revisited for IEEE 802.15.4a," ST J. Research, vol. 4, no. 1, pp. 131-142, 2007. [6] M.-G. Di Benedetto, L.D. Nardis, M. Junk, and G. Giancola, "(UWB)$^{2}$ : Uncoordinated, Wireless, Baseborn Medium Access for UWB Communication Networks," Springer Mobile Networks and Applications, vol. 10, no. 5, pp. 663-674, 2005. [7] A. Bletsas, A. Khisti, D.P. Reed, and A. Lippman, "A Simple Cooperative Diversity Method Based on Network Path Selection," IEEE J. Selected Areas in Comm., vol. 24, no. 3, pp. 659-672, Mar. 2006. [8] A. Bletsas, H. Shin, and M. Win, "Cooperative Communications with Outage-Optimal Opportunistic Relaying," IEEE Trans. Wireless Comm., vol. 6, no. 9, pp. 3450-3460, Sept. 2007. [9] M.H. Cheung and T.M. Lok, "Cooperative Routing in UWB Wireless Networks," Proc. IEEE Wireless Comm. and Networking Conf. (WCNC '07), pp. 1740-1744, 2007. [10] M. Dianati, X. Ling, S. Naik, and X. Shen, "A Node Cooperative ARQ Scheme for Wireless Ad-Hoc Networks," IEEE Trans. Vehicular Technology, vol. 55, no. 3, pp. 1032-1044, May 2006. [11] K.S. Gomadam and S.A. Jafar, "Impact of Mobility on Cooperative Communication," Proc. IEEE Wireless Comm. and Networking Conf. (WCNC '06), pp. 908-913, 2006. [12] K.-S. Hwang and Y.-C. Ko, "An Efficient Relay Selection Algorithm for Cooperative Networks," Proc. IEEE Vehicular Technology Conf. (VTC '07), pp. 81-85, 2007. [13] M.R. Islam and W. Hamouda, "An Efficient MAC Protocol for Cooperative Diversity in Mobile Ad Hoc Networks," Wireless Comm. and Mobile Computing, vol. 8, no. 6, pp. 771-782, 2008. [14] G. Naddafzadeh-Shirazi, P.-Y. Kong, and C.-K. Tham, "A Cooperative Retransmission Scheme for IR-UWB Networks," Proc. IEEE Int'l Conf. Ultra-Wideband (ICUWB '08), pp. 207-210, 2008. [15] L. Yi and J. Hong, "A New Cooperative Communication MAC Strategy for Wireless Ad Hoc Networks," Proc. IEEE/ACIS Int'l Conf. Computer and Information Science (ICIS '07), pp. 569-574, 2007. [16] B. Zhao and M.C. Valenti, "Practical Relay Networks: A Generalization of Hybrid-ARQ," IEEE J. Selected Areas in Comm., vol. 23, no. 1, pp. 7-18, Jan. 2005. [17] S. Zhu and K.K. Leung, "Distributed Cooperative Routing for UWB Ad-Hoc Networks," Proc. IEEE Int'l Conf. Comm. (ICC '07), pp. 3339-3344, 2007.