1. Backhaul looks for candidates
As it was discussed in this article, 4G backhaul needs upgrades. The fourth generation and the increase of bandwidth requirements are the guilty ones. Telecom operators know that it is time to upgrade their mobile backhaul, in order to prepare it for the next generation services and their demands. Wireless incoming technologies, such as WiMAX and LTE (analysis here), are going to be too much for the present backhaul.
Without a proper backhaul optimization, neither your backbone nor your access can stay current. An old fashioned backhaul will be a gigantic bottleneck. Carriers are aware of this fact so they are managing some options to upgrade their Networks.
Which technologies could help carriers to deal with this problem? Lets see a little description of some possible candidates.
2. Candidate 1: Provider Transport Backbone (PBT)
Provider Transport Backbone, also known as PBB-TE (Traffic Engineered Provider Backbone Bridging), is a standard of the IEEE and the ITU-T (802.1 Ethernet working group 802.1Qay).
The objective of PBB-TE is to provide carrier class features over Ethernet networks. The standard implements some of the features of SDH/MPLS into Ethernet. In few words, it can be defined as a “connection oriented packet network“.
General characteristics of SDH, MPLS, PBB-TE
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