C-MAC: A Cognitive MAC Protocol for Multi-Channel Wireless Networks

Cordeiro, Carlos; Challapali, K.

doi:10.1109/dyspan.2007.27

Cited by 333 publications

(216 citation statements)

References 12 publications

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“…A large number of approaches found in the literature adopt methods for sharing the available spectrum in the time domain [55,56]. The procedure followed is more or less the same for most of them, with the very first task to be carried out being that of time division into periods of fixed, or of dynamic length.…”

Section: Timeslots Usage Violationmentioning

confidence: 99%

Misbehavior Scenarios in Cognitive Radio Networks

et al. 2010

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Recent advances in the fields of Cognitive Radio and the proliferation of open spectrum access promise that spectrum-agile wireless communication will be widespread in the near future, and will bring significant flexibility and potential utility improvements for end users. With spectrum efficiency being a key objective, most relevant research focuses on smart coexistence mechanisms. However, wireless nodes may behave selfishly and should be considered as rational autonomous entities. Selfishness, pure malice or even faulty equipment can lead to behavior that does not conform to sharing protocols and etiquette. Thus, there is a need to secure spectrum sharing mechanisms against attacks in the various phases of the sharing process. Identifying these attacks and possible countermeasures is the focus of this work.

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Section: Timeslots Usage Violationmentioning

confidence: 99%

Misbehavior Scenarios in Cognitive Radio Networks

et al. 2010

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“…The other proposed solution is to assume CCC through unlicensed available channels. [7] , [ 6] this solution also has some challenges, unreliability and impossibility of determining unique CCC for entire network which endanger network Jia and Zhang proposed a MAC protocol which reviews hardware limitations such as transmission and receive restrictions. It has been analyzed by formulating receiving stop, problem and its optimization that results better output for CR network and improves spectrum throughput.…”

Section: Previous Workmentioning

confidence: 99%

Common Control Channel Saturation Detection And Enhancement In Cognitive Radio Networks

Nezhadal¹,

Berangi²,

Fathy³

2012

IJDPS

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“…In OC MAC and SCA MAC initially all nodes reside on a global common control channel and performs three way handshake to select data channel from the FCL and confirms the data transmission through an acknowledgement [11,12]; whereas C-MAC selects R channel within the white spaces and sets this channel as a control channel and manage the communication on R channel [13]. DOSS-MAC makes use of 3 transmitters and presents a control channel algorithm to enable coordination among cognitive nodes and implements network layer multicasts [14].…”

Section: Related Workmentioning

confidence: 99%

DDH-MAC: A novel Dynamic De-Centralized Hybrid MAC protocol for Cognitive Radio Networks

Shah

Safdar

Maple

2011

2011 RoEduNet International Conference 10th Edition: Networking in Education and Research

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Abstract-The radio spectrum (3kHz -300GHz) has become saturated and proven to be insufficient to address the proliferation of new wireless applications. Cognitive Radio Technology which is an opportunistic network and is equipped with fully programmable wireless devices that empowers the network by OODA cycle and then make intelligent decisions by adapting their MAC and physical layer characteristics such as waveform, has appeared to be the only solution for current low spectrum availability and under utilization problem. In this paper a novel Dynamic De-Centralized Hybrid "DDH-MAC" protocol for Cognitive Radio Networks has been presented which lies between Global Common Control Channel (GCCC) and non-GCCC categories of cognitive radio MAC protocols. DDH-MAC is equipped with the best features of GCCC MAC protocols but also overcomes the saturation and security issues in GCCC. To the best of authors' knowledge, DDH-MAC is the first protocol which is hybrid between GCCC and non-GCCC family of protocols. DDH-MAC provides multiple levels of security and partially use GCCC to transmit beacon which sets and announces local control channel for exchange of free channel list (FCL) sensed by the co-operatively communicating cognitive radio nodes, subsequently providing secure transactions among participating nodes over the decided local control channel. This paper describes the framework of the DDH-MAC protocol in addition to its pseudo code for implementation; it is shown that the pre-transmission time for DDH-MAC is on average 20% better while compared to other cognitive radio MAC protocols.

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C-MAC: A Cognitive MAC Protocol for Multi-Channel Wireless Networks

Cited by 333 publications

References 12 publications

Misbehavior Scenarios in Cognitive Radio Networks

Misbehavior Scenarios in Cognitive Radio Networks

Common Control Channel Saturation Detection And Enhancement In Cognitive Radio Networks

DDH-MAC: A novel Dynamic De-Centralized Hybrid MAC protocol for Cognitive Radio Networks

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