Hello,
I am hesitating if I could use Brownian motion to model the mobility of secondary users in a Cognitive Radio network (CRN). Or maybe I can just model a Random Walk. However, I couldn't find many papers that use these models for mobility in CRN. Maybe they are not appropriate for this purpose.
How can we model the mobility of Secondary Users in Cognitive Radio networks?
Thank you in advance.
Mobility itself in CRN is nothing different from traditional wireless networks. You could easily use the Random Way point Model if you are doing some simulation. However, for sophisticated simulation, you need to bring in height or depth.
However, mobility in CRN effects the connectivity and routing aspects of the network, because when a node changes it's location, the channel availability changes. To neighbor nodes in a CRN should have the same channel available, to communicate. However, if they move to a new location, the channel may not be free at one or both locations, and so they cannot communicate.
Hi, in "Mathematics teory of comunication" - Clude E. Shannon et Warren Weaver; For the Italy Press : ETAS KOMPASS 1971. In the 1948 the Bell System Technical Journal published his article of the Teory of Comunication. This book of the C.E. Shannon & W.Warren include a article where stay speaking.
Though the Mobility of Secondury User in CRNs is nothing different from traditional wireless networks but both spectrum mobility (availability of spectrum hole) and SU's mobility will effect the performance metrics in CRNs domain. So, we have to consider primary user activity model along with the mobility model of SU.
Here is the link of an theoretical approach on impact of secondary user mobility and primary user activity model, Which may help you in your work......
http://ieeexplore.ieee.org/xpls/abs_all.jsp?arnumber=7179449&tag=1
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