6top paper updates

Kazushi Muraoka

2

updates• Current evaluation results

– Obtained 8 curves which are combination of • w/ or w/o 6top housekeeping• Removing worst cell or removing random cell• w/ or w/o interference

– One point that does not make sense is that removeRandomCell works better than removeWorstCell when the number of motes is small.

Reliability(i) worst cell removing (ii) random cell removing

(iii) worst vs random (iv) no interference

Combination of housekeeping and worst cell does not

improve

Combination of housekeeping and

random cell slightly improves

Same performances

Packet drop rate (=1.0- reliability)(i) worst cell removing (ii) random cell removing

(iii) worst vs random (iv) no interference

When numMotes is equal or less than 60, the random is

better than the worst due to

unknown reasons

When numMotes is equal or less than 60,

the random curves are better than the worst curves due to unknown reasons

5

Next steps• Find condition sets where 6top housekeeping can improve the

reliability– Constant bit rate (pkPeriodVar = 0.0)– Parent Switch with threshold– Overprovision– numCh < 16

• Simulator update needed– More general removeWorstCell function– Parent switch with threshold