Home Technical objectives Enhancements in the transport network
Enhancements in the transport network

The successful operation of 3G/4G femtocells in remote areas is conditioned by the availability of low-cost backhauling that meets certain requirements. The transport network proposed in TUCAN3G for connecting the femtocells to the core operator's infrastructure may be a rural WiLD (WiFi over Long Distances) network, a WiMAX network, or even a hybrid network with either of those technologies and a satellite communication link.

This transport network needs to be optimized to meet all the requirements imposed by the access network (availability, bandwidth, maximum delay, etc.) with minimum resources. The success of TUCAN3G is directly related to the efficiency and low cost of the transport network because femtocells in remote areas are expected to generate low incomes to the operator. WiLD or WiMAX infrastructures will be appropriate for backhauling if they can meet the QoS and GoS requirements for the highest possible number of users. Satellite links will have a lower cost if they are optimized for backhauling function. End-to-end admission control strategies (integrating access and transport network segments) are needed to assure QoS guarantees.

Another critical aspect in rural transport networks is the energy. These deployments are mainly tree-like wireless networks in which most of the nodes need to be self-powered by using solar photovoltaic systems. The cost and robustness of those systems may also be optimized by managing power consumption in an intelligent way (i.e. minimizing the power consumption of these systems when they are not being used).