HC-MAC: A Hardware-Constrained Cognitive MAC for Efficient Spectrum Management

By Juncheng Jia, Qian Zhang, Xuemin Shen. IEEE Journal on Selected Areas in Communications, 2008

698 citations recorded by the source corpus.

Radio spectrum resource is of fundamental importance for wireless communication. Recent reports show that most available spectrum has been allocated. While some of the spectrum bands (e.g., unlicensed band, GSM band) have seen increasingly crowded usage, most of the other spectrum resources are underutilized. This drives the emergence of open spectrum and dynamic spectrum access concepts, which allow unlicensed users equipped with cognitive radios to opportunistically access the spectrum not used by primary users. Cognitive radio has many advanced features, such as agilely sensing the existence of primary users and utilizing multiple spectrum bands simultaneously. However, in practice such capabilities are constrained by hardware cost. In this paper, we discuss how to conduct efficient spectrum management in ad hoc cognitive radio networks while taking the hardware constraints (e.g., single radio, partial spectrum sensing and spectrum aggregation limit) into consideration. A hardware-constrained cognitive MAC, HC-MAC, is proposed to conduct efficient spectrum sensing and spectrum access decision. We identify the issue of optimal spectrum sensing decision for a single secondary transmission pair, and formulate it as an optimal stopping problem. A decentralized MAC protocol is then proposed for the ad hoc cognitive radio networks. Simulation results are presented to demonstrate the effectiveness of our proposed protocol.

Subfields: Computer Networks and Communications, Electrical and Electronic Engineering

View Paper: https://www.semanticscholar.org/paper/25a4cd168965a9611a97c773b1355bfdd77e9313

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Citations in the corpus

CRAHNs: Cognitive radio ad hoc networks (2009, neutral): “In [40] , an optimal stopping time is determined to maximize the expected capacity of CR users subject to the maximum number of spectrum bands a CR user can use simultaneously.”
Cognitive radio networking and communications: an overview (2011, background): “Hardware-constrained medium access control (HC-MAC) [128] emphasizes this fact by specifically”
Advances in cognitive radio networks: A survey (2011, background): “Considering the limited capability of spectrum sensing and limited bandwidth, a hardware-constrained cognitive MAC is proposed in [91], which optimizes the spectrum sensing decision by formulating sensing as an optimal stopping problem.”
A Survey on Security Threats and Detection Techniques in Cognitive Radio Networks (2013, background): “[97], [98], [99], [100], [101], [102], [103]), facilitate the deployment of cognitive capabilities without any central entity (e.”
A survey on MAC protocols for cognitive radio networks (2009, background): “The hardware constrained MAC [11] protocol aims at efficient spectrum sensing and spectrum access by considering the hardware constraints, such as, the operational limitations of a single radio, partial spectrum sensing, and spectrum aggregation limits.”