On Performance Analysis of IEEE 802.22 PHY for Cognitive Radio based Smart Grid Communications

Modeling and delay performance analysis of wireless regional area networks under incumbent coexistence and self‐coexistence with multichannel operations

“…As an example use case, the packet delay requirements for WRANs are considered to support data transmissions in smart grid networks. 27 In particular, the packet delay requirement for advanced metering infrastructure (AMI) is as low 21 the transition rates out of ON and OFF periods for each transmission channel are set to α = 0.2 s −1 and β = 0.1 s −1 , respectively. The mean packet length is set to L = 1,500 bytes.…”

“…The mean packet length is set to L = 1,500 bytes. 27 Assuming that the transmission capacity is equally divided for upstream and downstream transmissions, and hence, the fraction of capacity for upstream transmissions is ρ = 0.5.…”

“…As an example use case, the packet delay requirements for WRANs are considered to support data transmissions in smart grid networks 27 . In particular, the packet delay requirement for advanced metering infrastructure (AMI) is as low as 2 s, while the requirement for demand response management (DRM) is as low as 0.5 s. These delay targets are used to evaluate whether the mean packet delays are satisfactory.…”

“…Recently, there are several recent investigations on using WRANs to support data transmissions for smart grid networks. [26][27][28] An overview of how WRANs can support smart grid networks is provided in Dehalwar et al 26 While specific packet delay targets are mentioned in Khan et al, 27 the performance evaluation in Khan et al 27 focuses on the bit error rates (BERs), while the evaluation in Khan et al 28 focuses on the packet delivery ratios (PDRs). These existing works do not include evaluation of packet delays.…”

“…Without this approximation, the channel capacity allocated to each WRAN will change from frame to frame, and the system operation cannot be modeled as Markov chains, which help facilitate tractable packet delay analysis. Nevertheless, since each data frame duration is in the order of 10 ms 8 while the target packet delays considered in this work are in the order of 1 s, 27 the variation in the channel capacity is expected to be averaged out over several frame assignments, making the approximation reasonable.…”