ICT-601102 STP TUCAN3G Wireless technologies for isolated rural communities in developing countries based on cellular 3G femtocell deployments

Transport networks serving as backhaul for rural 3G femtocells have been specified in previous deliverables generated in TUCAN3G. These networks are initially planned based on the expected traffic generated to/from several rural access nodes, and the transport network planning ensures that all links offer a high enough capacity to bear the expected maximum throughput. However, the static situation described in the network planning phase is just an initial point. The dynamic operation of the network is subject to continuous changes. Some may be positive, because capacity in excess along a path may be used to offer access nodes more capacity than initially assigned. Some others may be negative, when the capacity of one or several links decreases due to temporary environmental conditions. The transport network must be able to distribute in either case the positive or negative margin among the access nodes in a controlled way. Another situation that the transport network must manage efficiently is battery shortage. In exceptional situations, it may be better for a system to worsen its performance in order to get a longer life. This document studies all these situations, proposes a basic formal description of the expected behaviour of the transport network and explores the strategy to be followed for the transport network optimization. The complete development of this strategy, including the formal definition of optimization problems and their resolution, will be contained in deliverable D53. Keyword list: transport network optimization. Dynamic backhaul operation, interface between backhaul and access network. Document Revision History DATE ISSUE AUTHOR SUMMARY OF MAIN CHANGES 1 May 2014 V01 Javier Simó Table of