Table 2 Probability expressions used in Case 1, where packet P
1 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
and both layers’ completion probability before the deadline 
are shownFrom: Instantly decodable network coding for real-time scalable video broadcast over wireless networks
|  |  | P 1(t) | – | P 1(t) | P 1(t+1) |  | P 1(t) | P 2(t+1) |
|---|---|---|---|---|---|---|---|---|
| R 1 | – | – | – | – |
| – | (1−ε 1) |
|  | R 2 | (1−ε 2) | – | ε 2 | (1−ε 2) |  | (1−ε 2) | (1−ε 2) |
