ABSTRACT
Contents 1.1 Introduction ....................................................................................................................... 4 1.2 Related Work ..................................................................................................................... 6 1.3 Network Model .................................................................................................................. 7 1.4 Basic Scenario .................................................................................................................... 8 1.5 Communication Architecture ............................................................................................ 9
1.5.1 Middleware ............................................................................................................10 1.5.2 Software-Defined Radio ........................................................................................11 1.5.3 Support Node ........................................................................................................11 1.5.4 Cognitive Radio Device ........................................................................................13
1.6 Common Control Channel ...............................................................................................15 1.6.1 CCC Model ...........................................................................................................16 1.6.2 Implementation Details ........................................................................................ 22
1.7 System Performance ......................................................................................................... 23 1.7.1 Queuing Modeling ............................................................................................... 24 1.7.2 Performance Metrics for SUs .................................................................................25
1.1 Introduction As mobility and computing become ever more pervasive in society and business, new mobile services are emerging for multimedia communication that are creating new challenges for telecommunication operators. New advanced infrastructure needs to be created to coexist with legacy infrastructures, which are expected to progressively fade out over a longer time period. Studies by Ericsson (November 2011) indicate, for instance, that mobile data traffic is expected to grow tenfold by 2016 (Release, Ericsson Press 2011). In particular, Internet traffic, especially video, is expected to drive the increase in mobile traffic by nearly 60% per year.
