M2M 通信中基于认知的能量有效中继分配策略

doi:10.3969/j.issn.0255-8297.2014.06.004

Abstract

Abstract: 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.

Key words: machine-to-machine communication, coordination, cognition, energy-effective, relay assignment

CLC Number:

TN925

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.

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Energy-Effective Relay Assignment Based on Cognition for Machine-to-Machine Communication

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