RADIO NETWORK NODE, WIRELESS DEVICE AND METHODS THEREOF USING GMSK MODULATION APPLYING NEGATIVE MODULATION INDEX

摘要

A radio network node (110) comprised,and a wireless device (121) configured to be operative, in a wireless communication system(100).The radio network node (110) obtains (701; 801; 901; 1401) downlink data and converts(702; 802-805; 902-905;1402) it to a baseband signal. The conversion comprises Gaussian Minimum Shift Keying(GMSK)modulation of the downlink data. The modulation applies a negative modulation index selected based on a type of wireless device (121) that is a target for the downlink data. A radio signal is provided based on the baseband signal and sent to, and received by, the wireless device (121) that provides user data based on the radio signal.