Bandwidth assignment paradigm for broadband integrated voice/data networks

Broadband networks are required to support the integration of various types of data demanding a variety of bandwidth. Particularly for integrated voice and data networks, voice traffic results in call losses and data traffic suffers longer delays should networks exhibit insufficient bandwidth. The paper proposes a bandwidth assignment paradigm, on which the assignment of the network bandwidth to each traffic can be based, to guarantee a maximum of throughput and a minimum of data delay and voice-call blocking probability. The paper initially analyzes a queueing system with heterogeneous arrivals and multiple designated channels. The analytical results reveal a salient phenomenon in which the data delay oscillates as the data traffic load increases. Based on the analysis, the paper illustrates the construction of the bandwidth assignment paradigm for a six-channel system. The paper also shows the run time complexity of the paradigm construction. Consequently, the constructed bandwidth assignments assure QoS in terms of data delay and voice-call blocking probability under various network loads