IP TV has become very popular discipline in last years. Many internet service providers provide their own dedicated IP TV solutions. Common situation is that some TV channels are provided as free and some as paid service. In the past IP TV was mostly provided through optical fiber networks, but now, there is an ever increasing demand by more and more customers to have IP TV over wireless links. In practice most multicast solutions are based on Protocol Independent Multicast (PIM) sparse mode mechanism. PIM does not contain mechanism for the determination between free and paid service. Solutions for wireless networks should focus on using minimal needed line capacity. We propose PIM-SM based distributed conditional access mechanism for paid IP TV service suitable for present commercial metropolitan wireless networks mostly based on IEEE 802.11 a/b/g/n/ac standards.
Published In : IJCSN Journal Volume 2, Issue 6
Date of Publication : 01 December 2013
Pages : 137 - 141
Figures : 06
Tables : --
Publication Link : ijcsn.org/IJCSN-2013/2-6/IJCSN-2013-2-6-151.pdf
Jan Fesl : was born in Ceske Budejovice, Czech Republic in 1982. His M.Sc. Diploma received in Computer Science in 2007 at the Czech Technical University of Prague, Czech Republic. Currently, he is an assistant professor at the University of South Bohemia and he is a Ph.D. student at the Czech Technical University of Prague. His current research is focused on computer networks and distributed computing.
Richard Klee : works as an assistant professor at the University of South Bohemia, his areas of research are VLSI and embedded computer systems.
Marie Dolezalova : Institute of Applied Informatics , Faculty of Science, Univers of South Bohemia
Ceske Budejovice, Branisovska 31, 37001, Czech Republic.
PIM-SM is a very useful and widely used mechanism for spreading multicast flow in computer networks. Our destination specific multicast solution utilizes all the advantages of the PIM protocol efficiency and adds the possibility to create conditional access for some subscribers. The main advantage of this solution is compatibility with all common devices, which are able to receive multicast traffic via sending igm join connect message. Required message flow for igmp message control is lowered thanks to DSMM message sending policy. Our solution is suitable to use in modern wireless networks because it is fast and fully compatible with the current standard. Security of this solution depends on what type of multicast user authentication mechanism is used. Self PIM protocol message communication is available only between backbone nodes.
 RFC4601, PIM protocol specification, available online, http://www.ietf.org/rfc/rfc4601.txt.
 Sysmaster ltd., IP TV broadcaster, http://www.sysmaster.com/products/iptv_broadcaster.php, available online.
 Jessica H. Fong, available online, http://web.eecs.umich.edu/~martinjs/papers/fgks_journal.pdf.
 Panaccess ltd. , IPTV CAS Solution , available online, http://www.panaccess.com/doc/sl_pr_iptv_en.pdf.