The approximation of bandwidth of a given path is done by sending detector packets across a network.
Similarly, to know the importance of considering available bandwidth of paths while calculating path preference probability, value of δ is varied as 1, 0.75, 0.5, and 0.25, and the analysis is shown in Figure 15 in which packet delivery ratio is compared for various values of δ.
After the selection of paths, the qualified paths are arranged based on the average unused bandwidth (PUB) of a particular path P ij.
This will make request message to carry minimum available bandwidth of a link along the path it has traveled.
First, the local convergence calculation is based on local parameters such as interference power, bandwidth of a frequency band, and path loss index.
The available bandwidth of the path from i to d is calculated as minimum of available bandwidth of all links along that path.
The route request message, RREQ_ANT of AMQR, is shown in Figure 2. In addition to exploring shortest path from source to destination, RREQ_ANT additionally senses the network environment-related factors like nodes visited, end-to-end delay from source to destination, and available bandwidth of the path through which it is propagated.
ICE can periodically measure the bandwidth with the congestion window method as in ordinary SCTP transmissions and can also model the available bandwidth of alternative paths for times when an alternative path becomes a better choice than the primary path.
BSig denotes the achievable bandwidth of path p with single channel, i.e., it is the estimate minimum bandwidth if all links of the path work on the same channel.
Table 1: Effective bandwidth of a transoceanic link.
