... is the target delay and ε is the probability of exceeding it On the other hand, in multiuser communications the capacity of the channel is no longer fully characterized by a single number Instead, ... , is obtained as the sum of the individual user rates, each of them with its own delay constraint: U CDt , = u=1 Ru t ,ε , D (22) with Dt and being the vectors with the target delays and probabilities ... expressions of the achievable users’ rates in a wireless system under the conditions stated by the MAC layer: a selected scheduling discipline and a QoS constraint given in terms of a delay constraint and...