The Internet Protocol (IP) is the choice of transport protocol both on wired and wireless networks and this choice is leading to the convergence of telecommunication and data networks. These converged networks will be the building blocks of the All-IP vision.
As the networks evolve to provide more bandwidth, the applications, services and the consumers of those applications all compete for that bandwidth. For the network operators it is important to offer a high quality of service (QoS) in order to attract more customers and encourage them to use their network as much as possible, thus providing higher average revenue per user (ARPU).
As for wireless networks with their high bit error rates (highly prone to interference) and high latency (long round trip times), it is difficult to attain those high bandwidths required. When all these factors are taken into account it means that the available resources must be used as efficiently as possible.
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