Spectrum-Aware Mobility Management
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Spectrum-Aware Mobility Managementin Cognitive Radio Cellular Networks
Under the guidance of Presented by Shanthi M.B Sagar Datta (usn:1cr09cs086)
Asst. prof. Dept CSE Sooraj Nayak (usn:1cr09cs101)
CMRIT Swati Sarma(usn:1cr09cs106)
Shraddha Joshi(usn:1cr09cs094)
8th Sem CSE
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AGENDA• Abstract• Introduction• Literature survey• Existing system• Proposed system• Software requirements• Conclusion• Future enhancement• Reference papers
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ABSTRACT• Cognitive radio (CR) networks have been proposed as a solution to both spectrum inefficiency and spectrum scarcity problems.• A spectrum-aware mobility management schemeis proposed for CR cellular networks.• A novel network architecture is introduced to mitigate heterogeneous spectrum availability which supports :Spectrum mobilityUser mobility Intercell resource allocation.
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INTRODUCTION
• Wireless spectrum is currently regulated by government agencies and is assigned to license holders.• Currently intercell handoff technology is used for 2G and 3G but only 15%-85% of frequency is utilized.• To optimize the use of frequency CR network is introduced.• Unlicensed devices share wireless channels with the licensed devices that are already using an assigned spectrum.
cont…
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INTRODUCTION
• CR networks, however, impose unique challenges resulting from high fluctuation in the available spectrum.
• To overcome challenges spectrum management is used.
• Spectrum management functions are: Spectrum sensing Spectrum decision Spectrum sharing Spectrum mobility
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LITERATURE SURVEY
• “Spectrum Policy Task Force Report” Federal Communications Commission Nov. 2002.
• “Next Generation/Dynamic Spectrum Access/Cognitive Radio Wireless Networks: A Survey,” I.F. Akyildiz, W.Y. M.C.Vuran,Mohanty,Sept. 2006.
• “Cognitive Cellular System within the TV Spectrum,” Proc. IEEE Symp. J. Sachs, I. Maric 2009.
• “Cognitive Radio, DSA and Self-X: Towards Next Transformation in Cellular Networks,” M.M. Buddhikot, Proc. IEEE Symp. Apr. 2010.
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EXISTING SYSTEM
• The components of current system are:
Primary User Primary Base station Cognitive radio user Cognitive base station.
cont…
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EXISTING SYSTEM
ADVANTAGES• Unused spectrum are determined and used them
automatically.• Several network standards are interoperated and
recognized automatically.• Automatically improves and accomplishes its progress
and minimize interference.
cont…
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EXISTING SYSTEM CHALLENGES OF CONSIDERATION•Heterogeneous mobility• Dynamic spectrum• Broad range of available spectrum
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Proposed System
• Spectrum Pool Structure To optimize spectrum usage
the CR n/w, spectrum pool structure is used, It consists of:
1. Spectrum pool2. Spectrum band3. Channel Also, the cell coverage is
extended to include two regions: BA(Basic area) & EA(extended area).
cont..
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Proposed System
• By taking into account both user & spectrum mobility events we have 4 diff types of handoff schemes:
Intracell/intrapool handoff Intercell/intrapool handoff Intercell/interpool handoff Intracell/interpool handoff
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SOFTWARE REQUIREMENTS
Hardware Requirements • SYSTEM: Pentium IV 2.4
GHz• HARD DISK: 40 GB• MONITOR : 15 VGA
colour• MOUSE: Logitech• RAM: 256 MB
Software Requirements • Operating system :
Windows XP Professional
• Front End :Eclipse.• Coding Language: Java
Swing
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CONCLUSION
• By exploiting the existing wireless spectrum, CR networks are being developed to solve current wireless network problems.
• CR networks, equipped with the cognitive radio, will provide an ultimate spectrum- aware communication paradigm .
• In particular, we investigate novel spectrum management functionalities such as spectrum sensing, spectrum decision, spectrum sharing, and spectrum mobility.
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FUTURE ENHANCEMENT
• Future wireless networking will be characterized by devices that will have self-optimizing entity.
• These devices will sense, respond and adapt to the presence of people, objects, and to varying environmental characteristics.
• Service Aware Protocol Design : Another concern is the efficient support of rich multimedia applications and services over dynamic wireless environment.
• Especially, the delivery and transport of multimedia to heterogeneous mobile users is very challenging.
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REFERENCE PAPERS
• “Next Generation/Dynamic Spectrum Access/Cognitive Radio Wireless Networks: A Survey,” I.F. Akyildiz, W.Y. M.C.Vuran,Mohanty,Sept. 2006.
• “Cognitive Cellular System within the TV Spectrum,” Proc. IEEE Symp. J. Sachs, I. Maric 2009.
• “Cognitive Radio, DSA and Self-X: Towards Next Transformation in Cellular Networks,” M.M. Buddhikot, Proc. IEEE Symp. Apr. 2010.
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THANK YOU!