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A traffic generation design is a stochastic model of the traffic flows or information sources in a interaction network, for example a cellular network or a computer network. A packet generation model is a traffic generation model of the packet flows or data sources in a packet-switched network. For example, a web traffic model is a design of the data that is sent out or received by a user’s web-browser.
The network efficiency can be evaluated by network traffic measurement in a testbed network, utilizing a network traffic generator such as iperf, bwping and Mausezahn. The traffic generator sends dummy packets, typically with a distinct packet identifier, making it possible to track the packet shipment in the network.
An analytical technique using queueing theory may be possible for streamlined traffic design, but is often too complicated if a reasonable traffic model is utilized. A streamlined package information model is the greedy source design. It may work in evaluating the maximum throughput for best-effort traffic (without any quality-of-service warranties).
Another streamlined conventional traffic generation model for circuit-switched information as well as package data, is the Poisson process, where the number of incoming packages or calls per time system follows the Poisson distribution. The length of each call is typically designed as an rapid circulation. The number of concurrently continuous telephone call follows the Erlang circulation.
For a more realistic model, a self-similar procedure such as the Pareto distribution can be used as a long-tail traffic design. The actual content of the payload data is usually not modelled, but replaced by dummy packets. Nevertheless, if the payload data is to be evaluated on the receiver side, for example regarding bit-error rate, a Bernoulli process is frequently assumed, i.e
. In this case a channel design shows channel impairments such as sound, interference and distortion. There are at least 2 standardized traffic generation models for packet-switched cordless networks: the 3GPP2 model and the 802.16 design. The 3GPP2 design is much more complicated to implement however it is expected to give more exact outcomes.