In machine-to-machine (M2M) communications, terminal nodes are mostly powered by batteries
that are energy constrained. Therefore energy consumption of the nodes is a crucial issue for the life of communications.
This paper studies how the terminal nodes with cognitive ability can use cooperative transmission
among each other to reduce energy consumption. As communications of secondary users are limited to the
available authorized channel spectrum, the traditional relay assignment based on Shannon channel capacity
is not applicable. Using the concept of effective channel capacity (ECC) and taking into account the nodes’
residual energy, we propose an optimal relay assignment strategy by using a matching algorithm. Simulation
results show that the proposed assignment strategy has advantages in low energy consumption and fairness.
CAO Tian-wei, XIE Wei, WANG Cong, XU You-yun
. Energy-Effective Relay Assignment Based on Cognition for Machine-to-Machine Communication[J]. Journal of Applied Sciences, 2014
, 32(6)
: 571
-576
.
DOI: 10.3969/j.issn.0255-8297.2014.06.004
[1]. Strategy I T U, Unit P. ITU internet reports 2005: The internet of things [J]. Geneva: International Telecomm- unication Union (ITU), 2005.
[2]. Atzori L, Iera A, Morabito G. The internet of things: A survey[J]. Computer networks, 2010, 54(15): 2787- 2805.
[3]. Wu G, Talwar S, Johnsson K, et al. M2M: From mobile to embedded internet [J]. Communications Magazine, IEEE, 2011, 49(4): 36-43.
[4]. Cover T, Gamal A E L. Capacity theorems for the relay channel [J]. Information Theory, IEEE Transactions on, 1979, 25(5): 572-584.
[5]. Bletsas A, Khisti A, Reed D P, et al. A simple cooperative diversity method based on network path selection [J]. Selected Areas in Communications, IEEE Journal on, 2006, 24(3): 659-672.
[6]. Xie Kun, Cao Jiannong, Wen Jigang. Optimal Relay Assignment and Power Allocation for Cooperative Communications [J]. Journal of Computer Science and Technology, 2013, 28(2): 343-356.
[7]. Xie Changliang, Chen K C, Wang Xinbing. To hop or not to hop in massive machine-to-machine communications [C]. Wireless Communications and Networking Conference (WCNC), 2013 IEEE. IEEE, 2013: 1021-1026.
[8]. Elkheir G A, Lioumpas A S, Alexiou A. Energy efficient cooperative scheduling based on sleep-wake mechanisms [C]. Wireless Communications and Networking Conference Workshops (WCNCW), 2012 IEEE. IEEE, 2012: 238-242.
[9]. Dhillon H, Huang H, Viswanathan H, et al. Power-efficient system design for cellular-based machine-to-machine communications [J]. 2013.
[10]. Cao Tianwei, Xie Wei, Wang Cong, et al. A MWM relay assignment strategy based on spectrum availability for cognitive radio networks [C]. Wireless Communications & Signal Processing (WCSP), 2013 International Conference on. IEEE, 2013: 1-6.
[11]. Kwon T, Choi J W. Multi-group random access resource allocation for M2M devices in multicell systems [J]. Communications Letters, IEEE, 2012, 16(6): 834-837.
[12]. Ko K S, Kim M J, Bae K Y, et al. A novel random access for fixed-location machine-to-machine communications in OFDMA based systems [J]. Communications Letters, IEEE, 2012, 16(9): 1428-1431.
[13]. Alonso-Zárate J, Stavrou E, Stamou A, et al. Energy-efficiency evaluation of a medium access control protocol for cooperative ARQ [C]. Communications (ICC), 2011 IEEE International Conference on. IEEE, 2011: 1-5.
