Qualcomm Incorporated

Peter Zillmann

Christian Pietsch

Pierpaolo Vallese

Christoph A Joetten

Hari Sankar

Igor Gutman

Jong Hyeon Park

Changhwan Park

Stefan Brueck

Andrea Garavaglia

Jae Ho Ryu

Jae Won Yoo

Christian Sgraja

Nicola Varanese

Andreas Maximilian Schenk

Chu-Hsiang Huang

Paolo Minero

Carlos Cabrera Mercader

Ronen Greenberger

Oren Matsrafi

Yossi Waldman

Yuval Neeman

Saeed Afrasiabi Gorgani

In some aspects, a user equipment (UE) may receive a message that includes an indication that a transmission configuration indicator (TCI) state switch for the UE is to be across a serving remote radio head (RRH) and a next RRH. The UE may adjust a tracking of the UE with respect to the serving RRH and the next RRH based at least in part on the indication. Numerous other aspects are described.

Indication of transmission configuration indicator state switching across remote radio heads

Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may detect whether a reference signal is present in a channel at a time instance at which the reference signal is expected. The UE may selectively gate processing of the reference signal based on detecting whether the reference signal is present in the channel. Numerous other aspects are described.

Detection of reference signals and gating of reference signal processing

Waveforms for wireless communication are shaped asymmetrically according to a complex-valued weighted overlap/add (WOLA) filter. A wireless communication device generates a waveform corresponding to a carrier. The device determines whether neighboring carriers are being used for wireless communication. If one neighboring carrier is occupied and the other is unoccupied, the wireless communication device applies the asymmetrical filter to the waveform such that out-of-band signals which may interfere with the occupied carrier are suppressed to a greater extent than out-of-band signals potentially present in or around the unoccupied carrier. The wireless communication device then transmits the asymmetrically shaped waveform to maximize interference reduction and signal quality.

Reducing channel interference with complex-valued asymmetrical weighted overlap and add filtering

Methods, systems, and devices for wireless communications are described. A user equipment (UE) may receive, from a base station, one or more downlink grants scheduling one or more corresponding downlink transmissions from the base station to the UE. In some examples, the UE may enter a state of sleep prior to receiving the one or more downlink transmissions. In such examples, the UE may wake up from the state of sleep at a first time that is at least a threshold period of time before a second time corresponding to a beginning of the one or more downlink transmissions. After waking up from the state of sleep, the UE may activate a notch filter and use the activated notch filter to filter a spur generated at the UE. The UE may receive the one or more downlink transmissions with improved reliability based on activating the notch filter.

Techniques for pre-opening notch filter in wireless communications system

A receiver receives packets without prior knowledge of their bandwidths. The receiver calculates a first auto-correlation function for a first channel, a second auto-correlation function for a second channel, and a dot product of the first auto-correlation function and the second auto-correlation function. A packet is detected and its bandwidth classified based at least in part on the dot product.

Packet detection and bandwidth classification for variable-bandwidth packets

To reduce the peak-to-average power ratio (PAPR) of a complex-valued digital baseband signal, the signal is mixed to an intermediate frequency and its real components extracted, to generate an intermediate-frequency real-valued digital signal. The intermediate frequency is one-quarter of a sampling rate of the complex-valued digital baseband signal. The intermediate-frequency real-valued digital signal is clipped and down-converted by one-quarter of the sampling rate.

Dynamic-range reduction of complex-valued baseband signals

Growing community of inventors

Nuremberg, Germany

Peter Zillmann