Radio network node, wireless device and methods thereof using GMSK modulation applying negative modulation index
AssigneeTelefonaktiebolaget LM Ericsson (publ)
InventorsMiguel Lopez, Mårten Sundberg, Olof Liberg
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Abstract
A radio network node comprised, and a wireless device configured to be operative, in a wireless communication system. The radio network node obtains downlink data and converts 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 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 that provides user data based on the radio signal.
Claims16
A method, performed by a wireless device operative in a wireless communication system, wherein the method comprises:
- receiving, from a radio network node comprised in the wireless communication system, a radio signal based on Gaussian Minimum Shift Keying, “GMSK”, modulation of downlink data, wherein the modulation applies a negative modulation index selected based on a type of the wireless device being targeted for the downlink data where the negative modulation index has been alternated with another modulation index separate from the negative modulation index so that alternating modulation indices are used in the modulation;
- and
- providing user data based on the received radio signal.
A wireless device configured to be operative in a wireless communication system, wherein the wireless device comprises:
- a processing circuit;
- memory for storing instructions executable by the processing circuitry, wherein the wireless device being configured to:
- receive, from a radio network node comprised in the wireless communication system, a radio signal based on Gaussian Minimum Shift Keying, “GMSK”, modulation of downlink data, wherein the modulation applies a negative modulation index selected based on a type of the wireless device being targeted for the downlink data where the negative modulation index has been alternated with another modulation index separate from the negative modulation index so that alternating modulation indices are used in the modulation;
- and
- provide user data based on the received radio signal.
Dependencies are inferred from the claim text.