Cooperation of 4G Radio Networks with Legacy Systems

The flexibility for wireless access providers and end users to exploit the best suitable Radio Access Technology (RAT) for a particular situation is very important for combining the strength of different RATs in the best possible way. Moreover operators look for efficient resource usage of their different RATs and more cost effective ways to deploy networks. This contribution describes proposed cooperation mechanisms to be supported by a cooperation architecture, with the objective of the efficient coexistence of the newly developed air-interface in the IST project WINNER and legacy RAN air-interfaces.