Erik Dahlman works at Ericsson Research and are deeply involved in 4G and 5G development and standardization since the early days of 3G research. Stefan Parkvall works at Ericsson Research and are deeply involved in 4G and 5G development and standardization since the early days of 3G research. Johan Skold works at Ericsson Research and are deeply involved in 4G and 5G development and standardization since the early days of 3G research.