Learn More
In cognitive radio (CR), CR users or also known as secondary users (SUs) are considered as “visitors” to the licensed spectrum. During the case when the primary user (PU) claims the band of the spectrum that is occupied by the SU, the SU's ongoing call must be transferred to another unused spectrum band. The variation in spectrum band is(More)
² in cognitive radio (CR), CR users or also known as secondary users (SUs) are considered DV³YLVLWRUV´WRWKHlicensed spectrum. During the case when the primary user claims the band of the spectrum that is occupied by the SU WKH 68 ¶V ongoing call must be transferred to another unused spectrum band. The variation in spectrum band is called spectrum mobility.(More)
In cognitive radio networks, the secondary users (SUs) switch the data transmission to another empty spectrum band to give priority to primary users (PUs). In this paper, channel switching in cognitive radio mobile ad hoc networks (CR-MANETs) through an established route is modeled. The probability of channel availability in this route is calculated based(More)
In this paper, Proactive Unified Spectrum Handoff (PUSH) scheme in cognitive radio mobile ad hoc networks (CR-MANETs) through an established route is considered in which the channel availability depends on the Primary User's (PU's) activity, secondary user's (SU's) mobility, and the channel heterogeneity. First, an analytical model for Unified Spectrum(More)
The Cognitive Radio (CR) can delivers the environment to Secondary Users (SUs) of Wireless Mesh Network (WMN) to utilize unused spectrum of Primary Users (PUs) opportunistically. The CR can improve the spectrum usage of the WMN. However, this rises the some additional complexities for the SUs such as spectrum heterogeneity, unpredictable PU activity and(More)
Almost all institutions and organizations use Integrated Management duo to its efficiency. Irrespective to order or sector, they are interested to integrate their management systems into one unified system with a comprehensive set of documentation, politicizes, methods and processes. In order to create an integrated and unified command system, modeling of(More)