VERBESSSERUNGEN IN ZELLULAREN NETZWERKEN DER DRITTEN GENERATION

摘要

The present invention relates to third generation cellular networks and, in particular, to the backbone ATM switching network between a base station and other base stations or other networks. The present invention seeks to provide a 3G cellular communications system with a reduced likelihood of failure. In accordance with a first aspect of the invention there is provided a third generation wireless communications network including a plurality of base station radio interfaces which provide cellular wireless coverage; at least one Node B and a radio network controller. The system is configured such that there are at least two signal paths between the said at least one node and the radio network controller whereby to provide an IMA protection mode or an IMA aggregation mode.