SVM-Based Spectrum Mobility Prediction Scheme in Mobile Cognitive Radio Networks

Algorithm 1

Joint feature vectors extraction for CU_𝑐.

     Calculation steps of 𝐒^𝐜_𝐢

if 𝐷_𝑐𝑝,𝑡₀≥𝑅_𝑝+𝑟_𝑐+𝑣_max⋅𝑇_𝑐

  Spectrum 𝑐_𝑝 is available for CU_𝑐.

else if 𝑅_𝑝+𝑟_𝑐≤𝐷_𝑐𝑝,𝑡₀<𝑅_𝑝+𝑟_𝑐+𝑣_max⋅𝑇_𝑐

  if 𝑇_𝑝<𝑇_𝑐

   Calculate CSA^𝑐_𝑝𝑇_𝑐 by (17).

  else

   Calculate CSA^𝑐_𝑝𝑇_𝑐 by (18).

  end

else if 0<𝐷_𝑐𝑝,𝑡₀<𝑅_𝑝+𝑟_𝑐

 if 𝑇^out_𝑝<𝑇_𝑐

  Calculate CSA^𝑐_𝑝𝑇_𝑐 by (21).

 else

  Calculate CSA^𝑐_𝑝𝑇_𝑐 by (22).

 end

end

The vectors 𝐒^𝐜_𝐢 are constructed for SVM.