A View on Telecommunication Network Evolution

While deployment of new network technologies has not been steady over the years, it is useful to take a long-term view of how major new telecommunications infrastructures evolve. Since the beginning of this decade, we have been witnessing the emergence of new generations of three major communication networks. This paper addresses the market conditions, technology innovations and services that are driving the need for an Intelligent All- Optical Network, 3G Wireless Network and QoS-Based Packet Network. Market forces such as traffic and subscriber growth, equipment cost reduction, and new technology penetration have a deep impact on network build-outs. Technology innovations abound, especially in the optical domain. For example Raman amplification, pure-optical switches, and tunable lasers have had a major impact on the architecture of optical networks. Many key services, such as streaming audio and high quality image transfer, were not possible using wireless access because of its limited bandwidth and performance. With 3G wireless technology, a true Mobile Internet will become a reality. Businesses have shied away from the use of the public Internet because of service quality. Thanks to advances in MPLS and Service Intelligence that is expected to change. For each type of network, we will survey the key factors that are shaping its evolution and implications to network architectures.