Spectrum Handoff Mechanism in the Framework of Mobility Management in Cognitive Radio Networks

2019 ◽  
Vol 10 (4) ◽  
pp. 19-35 ◽  
Author(s):  
Semba Yawada ◽  
Mesmin J Mbyamm Kiki ◽  
Mai Trung Dong
Keyword(s):  
Cognitive Radio ◽  
Cognitive Radio Networks ◽  
Wireless Systems ◽  
Radio Spectrum ◽  
Radio Networks ◽  
Innovative Technology ◽  
Management Approach ◽  
Spectrum Handoff ◽  
Opportunistic Access ◽  
Spectrum Mobility

Cognitive radio appears as an innovative technology in the field of access to wireless systems, aimed at significantly improving the use of the radio spectrum by allowing an opportunistic access manner. This article deals with some of the important characteristics of the spectrum mobility in cognitive radio networks (CRNs).The new management approach to the mobility and the connection are designed to reduce the latency and loss of information during spectrum handoff. A list of channel safeguards are maintained in this effect, but the maintenance and updates are a challenge. In this article, the authors describe the reasons and mechanisms for spectrum handoff. Algorithms have been developed to illustrate this handoff mechanism and make the comparison between the different methods of spectrum handoff. The simulation results obtained confirm that the proposed method and the algorithms developed presents a better performance.

scholarly journals Intelligent Process of Spectrum Handoff/Mobility in Cognitive Radio Networks

2019 ◽  
Vol 2019 ◽  
pp. 1-12 ◽  
Author(s):  
Prince Semba Yawada ◽  
Mai Trung Dong
Keyword(s):  
Cognitive Radio ◽  
Cognitive Radio Networks ◽  
Communication Systems ◽  
Spectral Band ◽  
Spectrum Management ◽  
Radio Networks ◽  
Innovative Technology ◽  
Main Task ◽  
Secondary Users ◽  
Spectrum Handoff

Cognitive radio is an innovative technology in the field of wireless communication systems, aimed at significantly improving the use of the radio spectrum while allowing secondary users to access the spectral band opportunistically. Spectrum management mechanism ensures the transmission of data by controlling the efficiency of operation between the primary and secondary networks. The main task of spectrum management is to ensure that secondary users benefit from the spectrum without interfering with primary users. This paper deals with some of the important characteristics of spectrum mobility in the cognitive radio networks. The new management approaches of the mobility and the connection are designed to reduce the latency and loss of information during spectrum handoff, a list of channel safeguard is maintained in this effect, but the maintenance and update are a challenge. In this paper, we describe the reasons and mechanisms of spectrum handoff. Protocols have been developed to illustrate this handoff mechanism. We also make a comparison between the different methods of spectrum handoff. The simulation results obtained confirm that the protocols developed and the proposed method performed better than the pure reactive handoff method.

scholarly journals Uma proposta para a melhoria da descoberta de vizinhos em Redes Cognitivas

2018 ◽  
Vol 1 (38) ◽  
pp. 69
Author(s):  
Yngrid Keila Silva Cabral ◽  
Joab De Araújo Silva ◽  
Marcelo Portela Sousa
Keyword(s):  
Cognitive Radio ◽  
Cognitive Radio Networks ◽  
Computer Network ◽  
Cognitive Radios ◽  
Radio Networks ◽  
Cognitive Networks ◽  
Radio Communication ◽  
Efficient Approach ◽  
Opportunistic Access ◽  
Sensing Model

Several wireless services make use of the spectrum for communication, from space radio communication to a simple wireless computer network. However, the considerable amount of services that make use of spectrum in the last years, has been responsible for its limited availability and inefficiency.. Cognitive networks or cognitive radio networks, are a technology that offer the efficient use of spectrum through opportunistic access to frequency bands. Throughout the cognitive radios scenario, this work will present a variation of the JENNA neighbors discovery algorithm. In addition to that, this research will propose a sensing model for a more efficient approach.

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