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Table 3 Probability expressions used in Case 2, where packet P 2 is transmitted at time slot t. With this transmission, the first layer completion probability before the deadline and both layers’ completion probability before the deadline are shown

From: Instantly decodable network coding for real-time scalable video broadcast over wireless networks

   P 2(t) P 1(t+1)   P 2(t) P 1P 2 P 2(t) P 1(t+1)
R 1 ε 1 (1−ε 1) (1−ε 1)
  R 2 (1−ε 2)   (1−ε 2) (1−ε 2) (1−ε 2) (1−ε 2)