An Algorithm That Predicts CSI to Allocate Bandwidth for Healthcare Monitoring in Hospital's Waiting Rooms

Algorithm 1

Channel-prediction-based algorithm.

 Input: The current time slot 𝑘 and available CSI of previous time slots for an arbitrary user 𝑖

 Output: CSI of the current time slot 𝑘 for use 𝑖

(1) If 𝑘 is an integer multiple of 𝑁, update the transition matrix 𝑃;

(2) Find the smallest 𝑛 such that the CSI of (𝑘−𝑛)th time slot is obtained by the central unit. If 𝑛<𝑁, 𝑃=𝑃^𝑛

 and go to step (3); Otherwise, 𝜂₍^(𝑘)_out)𝑖=𝜂₀ and go to step (5);

(3) Find the state of (𝑘−𝑛)th time slot, 𝜂_𝑖^{(𝑘−𝑛)}, we say the state is 𝑙(𝑙=1,2,…,𝐿);

(4) 𝜂₍^(𝑘)_out)𝑖=argmax_{𝑗={1,2⋯𝐿}}𝑝_𝑗𝑙 and 𝑝_𝑗𝑙(𝑗=1,…,𝐿) forms the 𝑙th column of 𝑃;

(5) Output 𝜂₍^(𝑘)_out)𝑖;