Table 2 The parameters of the QoS

Q _i

Buffer queue length of the sensor node i

D _i

Buffer queue delay of the sensor node i

e _i

Buffer queue effective bandwidth of the sensor node i

DD _N

Single-hop delay for N = 2, and multi-hops delay for N > 2

ΔD _N

Single-hop delay jitter for N = 2, and multi-hops delay jitter for N > 2

ee _N

Single-hop effective bandwidth for N = 2, and multi-hops effective bandwidth for N > 2