Qualcomm Incorporated

Alexandre Pierrot

Alessandro Risso

Afshin Haftbaradaran

Shravan Kumar Reddy Garlapati

Li Feng Zhang

Hari Sankar

Subramanya P Rao

Jing X Sun

Huilin Xu

Aamod Dinkar Khandekar

Heechoon Lee

Arvind Vardarajan Santhanam

Ashok Mantravadi

Pouriya Sadeghi

Supratik Bhattacharjee

Jae Ho Ryu

Scott Hoover

Sanaz Barghi

Ming Lin

Chinmay Shankar Vaze

Gautham Hariharan

Prabhu Kandasamy

Michael Allen Corley

Navin Dunichand Anwani

Ashutosh Vinod Agrawal

Harsha Narasimha Acharya

Ali Koochakzadeh

Michael Corley

Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive a signal. The UE may measure the signal to explore one or more inactive ranks or inactive precoders. The UE may transmit, based at least in part on the measuring, a report that includes channel state information for at least one of the one or more inactive ranks or inactive precoders. Numerous other aspects are described.

Exploration of inactive ranks or inactive precoders

Methods, systems, and devices for wireless communications are described. In some systems, a first device may transmit a signal to a second device including a number of error detection bits interleaved with a number of information bits. The second device may use the error detection bits to determine if the signal was received correctly, where each error detection bit may be associated with a set of information bits. The second device may progressively decode the signal and continuously perform an error detection calculation based on a first set of information bits associated with a first error detection bit. Based on the error detection calculation, the second device may calculate an expected error detection bit corresponding to the first error detection bit. The second device may compare the first error detection bit to the expected error detection bit. Other aspects and features are also claimed and described.

Error detection for a wireless channel

Aspects described herein relate to decoding downlink control information (DCI) based on multiple DCI sizes. A first hypothesis of multiple hypotheses for decoding a communication received in a control channel search space, wherein the multiple hypotheses are based on different corresponding DCI sizes can be determined. The communication received in the control channel search space can be decoded based on the first hypothesis. For each of the multiple hypotheses and based on the different corresponding DCI sizes, information bits can be extracted from the communication as decoded. For each extracting of the information bits, cyclic redundancy check (CRC) can be performed based on one of the different corresponding DCI sizes to determine whether extracting of the information bits yields DCI.

Techniques for decoding downlink control information with different sizes in wireless communications

Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment may identify a hash value index associated with searching for a physical downlink control channel. The hash value index may be identified based at least in part on an index of an interval of a plurality of intervals within a periodicity. The user equipment may configure, based at least in part on the hash value index, a hash function associated with determining the hash value. Numerous other aspects are provided.

Physical downlink control channel hash function update

Certain aspects of the present disclosure generally relate to techniques for combining a plurality of decision metrics of a scrambled payload in a 5G wireless communications system. For example, in some cases, combining decision metrics of a scrambled payload may generally involve receiving a first payload at a receiver that was scrambled both before and after encoding, generating a second payload at the receiver with selectively set payload mask bits, and using the selectively-set payload mask bits in the second payload to descramble the first payload.

Combining decision metrics of a scrambled payload

A method for communication includes obtaining a timing signal from a timing synchronization reference source, computing a system frame number (SFN)&#x2014;direct frame number (DFN) offset, creating a timing fingerprint using the timing signal and the SFN-DFN offset, the timing fingerprint also comprising additional timing information, entering the timing fingerprint into a database, continually updating the timing fingerprint, determining whether the timing signal remains within a threshold, if the timing signal exceeds the threshold, iterating the timing fingerprint, verifying the timing fingerprint to determine whether there is a timing inconsistency between a most recent timing fingerprint and current time, if the timing fingerprint is verified, using the SFN-DFN offset to derive current DFN timing to decode a sidelink control information (SCI) communication, and if the SCI communication is decoded, using the timing signal for communicating over a sidelink communication channel.

Systems and methods for timing synchronization and synchronization source selection for vehicle-to-vehicle communications

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San Diego, CA, United States of America

Alexandre Pierrot