Sophia Tsakiridou's research while affiliated with University of Vermont and other places

Publications (7)

Article
The delay analysis of a statistical multiplexer with heterogeneous input sources is presented in this work. The traffic generated by an individual source is described in terms of a discrete-time Batch Markovian arrival process with geometrically distributed idle periods. An exact closed form expression for the mean packet delay in the system is obt...
Article
A discrete-time system of two queues served according to distinct policies is studied in this paper: one queue receives 1-limited service; the other is served according to some policy from the introduced class of (state dependent) policies S . Class S contains traditional service policies as well as flexible `ad hoc' policies which may be designed...
Article
A discrete-time system of two queues served according to distinct policies is studied in this paper: one queue receives 1-limited service; the other is served according to some policy from the introduced class of (state dependent) policies S. Class S contains traditional service policies as well as ad hoc policies. A partial performance ordering of...
Article
A very flexible analysis approach is developed for the exact analysis of a non-gated TDM scheme, supporting time critical (TC) and time non- critical (TNC) packetized information. Correlations in the TNC traffic and spreading of the TC traffic over the entire frame can be accommodated, unlike in the past work
Article
In this paper, a queueing system is formulated, analyzed and applied for the study of the queueing behavior of a DQDB station. At first, an appropriate process is defined to capture the station's perception of the state of the distributed global queue (DQDB network) and a queueing model is formulated. In the sequel, a general queueing system is con...
Conference Paper
The queue occupancy distribution of the distributed queue-dual-bus (DQDB) station is derived through the formulation and exact analysis of a queuing model with the following characteristic: the packet service time requirements depends on the state of an underlying Markov-structured process at the time when the packet is forwarded to the server (hea...
Conference Paper
The problem of multiplexing time-critical (TC) and time-non-critical (TNC) packetized information in an integrated services digital network (ISDN) is considered. An appropriate time division multiplexing (TDM) scheme is adopted to accommodate the strict delay requirements for the TC traffic. The resulting system is different from those previously c...

Citations

... The following models will be classified in terms of queue polling-cyclic, periodic, random, or priority. We consider separately the two-queue polling systems which are discussed in [106,229]. The times of customer service are equal to one slot. ...
... Just recently, [58] reports an M/G/l-type model of the tagged node from which the statistics of the queue-length occupancy distribution are derived. To obtain an M/G/Itype model the authors assume that a) the maximum number of outstanding requests in the tagged node is bounded; and b) the L_NET process is modelled via a Bernoulli process. ...