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UBC Theses and Dissertations

Determining trunk reservation parameters in a non-symmetric telecommunications network with non-uniform demand Sim, Thaddeus Kim Tack


When a telephone call enters a fully-connected telecommunications network, the network first attempts to connect the call via a direct path. If this is not possible, the network attempts to connect it through a combination of two or more trunk groups. This is called a tandem path. When the network reaches operational capacity, the use of tandem paths is undesirable because the trunk groups in the path could be used to connect more than one telephone call. Trunk reservation is the partitioning of trunk groups to allow only direct calls to connect on the reserved trunks. This reduces the use of tandem paths when the network is at capacity, thus increasing the probability of connecting more calls on the more efficient direct path. Past studies in this area have focused on using uniform trunk reservation parameters in symmetric networks with uniform demand. In this thesis, we attempt to determine non-uniform trunk specific reservation parameters in a non-symmetric network with non-uniform demand using fixed-point approximations of a birth-death process and simulated annealing. An application of this study to TELUS' Edmonton network is discussed.

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