Alert: An Adaptive Low-Latency Event-Driven MAC Protocol for Wireless Sensor Networks

Algorithm 2

Procedure get P (𝑛,𝑀).

(1) for each frame 𝑡  do

(2) Calculate (and store) 𝐩^(𝑡) for the given 𝑀 with

  current value of 𝑛 using  (51)

(3) Reduce 𝑛 by expected no. of messages read so far,

   that is,

   𝑛=𝑛−𝔼(𝑅_𝑛)

(4) if 𝑛≤𝑁_thr  then

(5)  Store number of frames 𝐹=𝑡+1

(6)  Repeat last 𝐩^(𝑡), that is, 𝐩^(𝐹)=𝐩^(𝑡).

(7)  Break from for loop

(8) end if

(9) end for

(10) Return 𝐹 and 𝐏=(𝐩⁽¹⁾;…;𝐩^(𝐹))