Wireless Adaptive Video Streaming with Edge Cloud

Algorithm 1

Heuristic iterative ReQoE optimization.

N: total number of video streams

: Desired video rate, i.e., the user requested

  rate for video stream i

: Data rate after optimization or transcoded

video rate (min means the data rate required to

provide the minimum video resolution of 360p; 0

means video stream i is dropped)

:  Link data rate between AP/BS and user i

:  Protocol and header overhead

: Channel utilization of stream i

%:      Processing cycles needed for transcoding

: transcodedor not

C:    the total available processing cycles

for % Initialization

;; ;

end

then

break;% no transcoding

else

sort the users’ link data rate, i.e.,, if;

;

while (1)

ifthen

% transcoding cycles available

reduce stream resolution by one level

stream i transcoded and

else if for all transcoded streams &&

stream i dropped, and

end

;

Ifthen

break;

else

if then ;

end

end