Patent ID: 11864218
Assignee: T-MOBILE USA, INC.
Field: Digital communication (Electrical engineering)
Classification: CPC H | IPC H

Claim 15:
16. A system configured to determine the uplink (UL) transmission waveform for use by a user equipment (UE) within a wireless communication network of a first radio access technology (RAT) operating in a dual connectivity mode with a second RAT, different from the first RAT, the system comprising:
at least one hardware processor; and
at least one non-transitory memory, coupled to the at least one hardware processor and storing instructions, which, when executed by the at least one hardware processor, cause the system to:
identify UL frequency resources scheduled to the UE for concurrent UL transmissions;
identify downlink (DL) frequency resources scheduled to the UE for DL transmissions; and,
determine, based on a frequency of an intermodulation distortion (IMD) product of two or more frequencies of the UL frequency resources, a waveform for use by the UE for the concurrent UL transmissions,
wherein the UE is to use a Discrete Fourier Transform (DFT)-spread Orthogonal Frequency Division Multiplexing (OFDM) (DFT-s-OFDM) waveform for the concurrent UL transmissions when the frequency of the IMD product is within the DL frequency resources, and
wherein the UE can use a Cyclic Prefix (CP) OFDM (CP-OFDM) waveform for the concurrent UL transmissions when the frequency of the IMD product is not within the DL frequency resources,
wherein, based on the frequency of an intermodulation distortion (IMD) product of two or more frequencies of the UL frequency resources, the waveform for use by the UE for the concurrent UL transmissions comprises:
sending a query request to a memory in the wireless communication network, the query request including the UL frequency resources and the DL frequency resources;
receiving a query response from the memory, wherein the query response identifies a risk for an IMD product at a frequency within the DL frequency resources; and,
determining, based on the query response, the waveform for use by the UE for the concurrent UL transmissions.