Cognitive Radio Handover in Cellular Networks
In cellular networks the continuity of communication has high significance in real-time services, therefore, the Handover (HO), transferring communication from one base station to another one, always has been the main concept of all mobiles generations.
In cellular networks for avoidance of frequency interference, different channel allocation scheme are proposed; static, semi-static and dynamic schemes. Dynamic scheme allocates frequency band more efficient. However, dynamic schemes usually are not used by operators because of the too much signaling overhead. We propose a new scheme for resource allocation based on Cognitive Radio (CR) technology to use provide frequency bands for HO. While the frequency bandwidth allocated to an operator is specified this opportunity exist with CR technology the frequency of the same network, which is employed for the farther distances, recognize and get used, to supply the required resources for HO. We named our proposed HO schemes Cognitive Radio Handover (CRHO).
Keywords: Cognitive radio, Cellular networks, Hand Over
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ABOUT THE AUTHORS
Sadaf Tafazoli
received the B.Sc. Degree in computer software engineering and the M.Sc. Degree in IT-computer networks from Iran University of Science and Technology (IUST), Tehran, Iran, in 2011 and 2014 respectively. She currently working as an Expert Network Infrastructure at MVM (Modiran Vehicle Manufacturing) to set up and support the network of the organization. Her past work experience was related to evaluation and analyzing the performance of the ADSL Network. She was working as a Network Analyzer at TCT (Telecommunication Company of Tehran). It should be noted that one of her major academic achievement was getting the full scholarship for Post Graduate Course (MS.c. in IT-Computer Networks). Her main research interest lies in an area of "Resource allocation schemes in LTE networks and cognitive radio technology position in mobile next generation".
Reza Berangi
received the B.Sc. Degree in telecommunications and the M.Sc. Degree in electronic engineering from Iran University of Science and Technology (IUST), Tehran, Iran, in 1985 and 1989 respectively, and the Ph.D. degree in mobile telecommunications from Victoria University, Melbourne, Australia, in 1998. From 1986 to 1988, he worked with the Nasr Research and Development Centre, Tehran, Iran on signal processing hardware and software design. From 1997 to 1999, he was with the Mobile Communications and Signal Processing Group at VUT, working on smart antenna mobile base stations. From 1999 to 2001, He was with the Australian Cooperative Telecommunication Research Centre (ATCRC), working on intelligent base stations for the 3G mobile communication systems. Since 2001, Dr. Berangi has been assistant professor at the Computer Engineering Department of IUST. In 2010 he visited the Center for Telecommunications and informatics, Victoria University, Australia and did 6 month research on cognitive radio networks. His research interest is wireless networks and signal processing for mobile telecommunications, including adaptive algorithms, and cognitive radio networks.
Sadaf Tafazoli
received the B.Sc. Degree in computer software engineering and the M.Sc. Degree in IT-computer networks from Iran University of Science and Technology (IUST), Tehran, Iran, in 2011 and 2014 respectively. She currently working as an Expert Network Infrastructure at MVM (Modiran Vehicle Manufacturing) to set up and support the network of the organization. Her past work experience was related to evaluation and analyzing the performance of the ADSL Network. She was working as a Network Analyzer at TCT (Telecommunication Company of Tehran). It should be noted that one of her major academic achievement was getting the full scholarship for Post Graduate Course (MS.c. in IT-Computer Networks). Her main research interest lies in an area of "Resource allocation schemes in LTE networks and cognitive radio technology position in mobile next generation".
Reza Berangi
received the B.Sc. Degree in telecommunications and the M.Sc. Degree in electronic engineering from Iran University of Science and Technology (IUST), Tehran, Iran, in 1985 and 1989 respectively, and the Ph.D. degree in mobile telecommunications from Victoria University, Melbourne, Australia, in 1998. From 1986 to 1988, he worked with the Nasr Research and Development Centre, Tehran, Iran on signal processing hardware and software design. From 1997 to 1999, he was with the Mobile Communications and Signal Processing Group at VUT, working on smart antenna mobile base stations. From 1999 to 2001, He was with the Australian Cooperative Telecommunication Research Centre (ATCRC), working on intelligent base stations for the 3G mobile communication systems. Since 2001, Dr. Berangi has been assistant professor at the Computer Engineering Department of IUST. In 2010 he visited the Center for Telecommunications and informatics, Victoria University, Australia and did 6 month research on cognitive radio networks. His research interest is wireless networks and signal processing for mobile telecommunications, including adaptive algorithms, and cognitive radio networks.
