I{τk=0} and I{τk=dj } are some indicator functions with E {I{τk=0}} = prob{τk = 0} = p0 and E {I{τk=dj }} = prob{τk = dj} = pj with ?q j=0 pj≤ 1. This model with q = 0 is used to describe the measurement missing [91]. It is claimed [90] that this model provides a unified representation to account for both the random communication delays and stochastic data missing. However, it is not clear how the measurement noise w(k) imposed on yk is transmitted through a communication network. Moreover, how to get the probabilities pj is not involved [90].