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

AGENDA• Abstract• Introduction• Literature survey• Existing system• Proposed system• Software requirements• Conclusion• Future enhancement• Reference papers

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.

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…

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

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.

EXISTING SYSTEM

• The components of current system are:

Primary User Primary Base station Cognitive radio user Cognitive base station.

cont…

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…

EXISTING SYSTEM CHALLENGES OF CONSIDERATION•Heterogeneous mobility• Dynamic spectrum• Broad range of available spectrum

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..

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

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

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.

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.

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.

THANK YOU!