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1. (WO2018039044) ENERGY DETERMINATIONS FOR MULTI-USER SUPERPOSITION TRANSMISSIONS

Pub. No.:    WO/2018/039044    International Application No.:    PCT/US2017/047406
Publication Date: Fri Mar 02 00:59:59 CET 2018 International Filing Date: Fri Aug 18 01:59:59 CEST 2017
IPC: H04L 27/34
H04B 7/0452
H04W 52/34
H04W 52/42
Applicants: QUALCOMM INCORPORATED
Inventors: SUN, Jing
CHEN, Wanshi
GAAL, Peter
Title: ENERGY DETERMINATIONS FOR MULTI-USER SUPERPOSITION TRANSMISSIONS
Abstract:
Methods, systems, and devices for wireless communication using multi-user superposition (MUST) techniques in conjunction with multiple-input multiple-output (MIMO) techniques are described. A base station may configure an enhancement layer user equipment (UE) and a base layer UE with a transmit power ratio associated with enhancement layer transmissions and base layer transmissions. The base station may then transmit on the base layer and enhancement layer on multiple spatial layers using MIMO techniques. A UE may receive the transmission, determine the total power of the transmission on all spatial layers, and apply a power splitting constraint to determine the distribution of power for the transmission on the different spatial layers. The UE may then determine the transmit power of a transmission on a specific layer based on the power ratio configuration and use this information to demodulate and decode the transmission.