Algorithm 1 Data Aggregation with Pattern Matching.

INITIALIZATIONS

$\alpha =$ thresholdvalue

code $=\alpha$

p_code = Generate_pattern_code(data,code)

END INITIALIZATIONS

int Generate_pattern_code(data,code)

{

data_matched = Compare_data_with_stored_pattern(data,code)

if (data_matched) then

return (code)

else

return ($\alpha$)

end if

} END Generate_pattern_code

if (p_code $==\alpha$) then

send_data(data)

else

send_data(p_code)

end if