Security and quality of service (QoS) co-design in cooperative mobile ad hoc networks
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RESEARCH
Open Access
Security and quality of service (QoS) co-design in cooperative mobile ad hoc networks F Richard Yu1* , Helen Tang2 , Shengrong Bu1 and Du Zheng1
Abstract Cooperative communication has been considered as a promising technique to improve communication quality of service (QoS) in wireless networks, including mobile ad hoc networks (MANETs). Due to their unorganized and decentralized infrastructure, cooperative MANETs (CO-MANETs) are vulnerable to attacks initiated on relays. Although encryption and authentication protocols may prevent compromised data transmission when a selected relay is attacked, their cost is high. In this paper, we propose a game-theoretic approach to quantitatively analyze the attack strategies of the attacker so as to make a rational decision on relay selection and the authentication parameter adaptation to reach a trade-off between security and QoS in CO-MANETs. Simulation results show the effectiveness of the proposed approach for security and QoS co-design in CO-MANETs. Keywords: Security; Quality of service; Game theory; MANETs
1 Introduction Cooperative communication has been considered as a promising technique to improve quality of service (QoS) in wireless networks through the cooperation of users. The idea behind cooperative communication is that single-antenna mobile nodes in a multiuser scenario can share their antennas in a manner that creates a virtual multiple-input and multiple-output (MIMO) system [1]. Transmitting independent copies of the signal generates diversity and can effectively combat the deleterious effects of fading. Particularly, selecting the most suitable relay among available relays can achieve selection diversity in cooperative communications [2-4]. This promising technique has been considered in the IEEE 802.16j standard and is expected to be integrated into future 3GPP cellular networks [5]. While cooperative communication brings significant benefits, it also raises serious security issues. Particularly, mobile ad hoc networks (MANETs) with cooperative communications (CO-MANETs) [6] present significant challenges to secure routing, key exchange, key distribution and management, as well as intrusion detection and protection. For example, it is possible for malicious nodes *Correspondence: [email protected] 1 Department of Systems and Computer Engineering, Carleton University, Ottawa, ON K1S 5B6, Canada Full list of author information is available at the end of the article
to join the network and relay unsolicited information to a rogue destination, thereby compromise the network. It is also possible for some nodes to act in a selfish manner to conserve their own energy and not cooperate and relay information from other nodes, thereby discouraging cooperation. Although encryption and authentication protocols can prevent compromised data transmission when the selected relay is attacked, these measures consume scarce bandwidth and reduce system throughput. It would be desirable to choose only trustworthy nodes as relays and only authent
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