Qualcomm Incorporated

Zhibin Dang

Arnaud Meylan

Reza Shahidi

Qingxin Chen

Lan Lan

Leena Zacharias

Akshay Kumar

Sivaram Srivenkata Palakodety

Krishna Chaitanya Mukkera

Omesh Kumar Handa

Farrukh Rashid

Alberto Rico Alvarino

Tom Chin

Arvind Vardarajan Santhanam

Brian Clarke Banister

Min Wang

Jia Tang

Liangchi Hsu

Muthukumaran Dhanapal

Lu Bai

Supratik Bhattacharjee

Nan Zhang

Bhupesh Manoharlal Umatt

Carlos Marcelo Dias Pazos

Jun Hu

Cheol Hee Park

Vishal Dalmiya

Vikram Singh

Insung Kang

Chun-Hao Hsu

Feilu Liu

Srinivasan Rajagopalan

Nitin Pant

Sridhar Bandaru

Timothy Paul Pals

Jittra Jootar

Michel Evan Chauvin

Ashish Shankar Iyer

Yong Xie

Udayan Murli Bhawnani

Wei-Jei Song

Rebecca Wen-Ling Yuan

Ling Xie

Karthikeyan Sabapathi

Ambarish Tripathi

Gautham Hariharan

Sumanth Kumar Kota

Ahmed Omar Desouky Ali

Sanjeev Mittal

James Beckman

Sibasish Das

Ashwin Madhur Comandur

Avinash Manda

Gaoshan Li

Chetan Jagdeesh Bharadwaj

Weihua Yang

Certain aspects of the present disclosure provide a method for wireless communication by a user equipment (UE). The UE starts a first timer (such as a discontinuous reception (DRX) hybrid automatic repeat request (HARQ) round-trip-time (RTT) timer), after sending an uplink (UL) data transmission to a network entity. The UE then starts a second timer (such as a DRX retransmission timer) when the first timer expires. The UE then determines whether to wake up or sleep for a duration of the second timer based on a prior block error rate (BLER).

Power savings for voice services

This disclosure provides systems, methods and apparatuses for enabling collision mitigation for a user equipment (UE) operating in a dual active mode. In some aspects, the UE may generate a communication for a first subscription in a first time window associated with a first priority for a time domain division pattern with a second subscription. The UE may transmit, using the first subscription, the communication in a second time window associated with a second priority for the time domain division pattern. For example, the second time window associated with the second priority may be a time window in which traffic for the first subscription is prioritized. In some aspects, the UE may select modified periodic intervals for transmissions of a communication to mitigate collisions associated with the time domain division pattern. For example, a transmission time of the periodic communication may be varied (or randomized) over time.

Collision mitigation for a dual subscriber identity module (SIM) dual active (DSDA) user equipment

Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may initiate a first service, having a first priority during a time interval, associated with a first subscriber identification module (SIM), and a second service, having a second priority during the time interval, associated with a second SIM of the UE, the first priority having a higher priority than the second priority. The UE may identify a first type of communication associated with the second SIM. The UE may adjust, based at least in part on the first type of communication, at least one of the first priority or the second priority during the time interval. The UE may perform a communication in accordance with the adjusted at least one of the first priority or the second priority. Numerous other aspects are described.

Techniques for dual active subscriber transmit sharing

Methods, systems, and devices for wireless communications are described. A user equipment (UE) may identify that uplink data is available for transmission at the UE prior to a scheduling request occasion. The UE may skip transmission of a scheduling request during the scheduling request occasion based on identifying that an uplink grant is pending. The UE may transmit at least a portion of the uplink data to a base station using a resource allocation indicated by the uplink grant. Alternatively, the UE may transmit the scheduling request to the base station during a first scheduling request occasion. The UE may initiate a retransmission timer based on transmitting the scheduling request. Accordingly, the UE may skip retransmission of the scheduling request during a second scheduling request occasion that is subsequent to the first scheduling request occasion based on the retransmission timer.

Techniques for skipping scheduling requests

A user equipment (UE) configured for dual connectivity with a split bearer configuration may transmit uplink data packets to one or both a master cell group (MCG) and a secondary cell group (SCG). The UE may transmit an uplink transmission from a packet data convergence protocol (PDCP) entity over one or both of a first radio link control (RLC) entity associated with the MCG and a second RLC entity associated with the SCG. The configuration including a transmit buffer threshold. The UE may receive, at the PDCP entity, an uplink switch start indication. The UE may activate the second RLC entity in response to receiving the uplink switch start indication. The UE may transmit a buffer status report according to a current transmit buffer level plus the transmit buffer threshold. Accordingly, the UE may communicate with the SCG based on the uplink switch start indication.

Method and apparatus to switch uplink transmission on uplink split bearer

Methods, systems, and devices for wireless communications are described. A user equipment (UE) may adaptively switch between hybrid automatic repeat request (HARQ) monitoring modes to support power savings. In a first HARQ skipping mode, the UE may transmit an uplink message corresponding to a HARQ identifier and may receive a positive acknowledgment (ACK) message in a HARQ monitoring occasion associated with the HARQ identifier. Upon receiving the ACK message, the UE refrains from monitoring a subsequent HARQ monitoring occasion associated with the HARQ identifier while in the first HARQ skipping mode (e.g., an aggressive HARQ skipping mode). The UE may periodically enter a periodic evaluation mode from the first HARQ skipping mode, in which the UE monitors a subsequent HARQ monitoring occasion after receiving an ACK message to check for false ACK messages. If a false ACK message is detected, the UE enters a first HARQ skipping prohibited mode.

Techniques for controlling hybrid automatic repeat request (HARQ)

Aspects of the present disclosure provide techniques to enable enhanced machine type communication (s) (eMTC) and/or narrowband Internet-of-Things (NB-IoT) devices to transition to idle mode after releasing a connection, such as a radio resource control (RRC) connection, more quickly than with previously known techniques. An example method includes determining, based on an indication received in a narrowband signal on a narrowband region of a bandwidth comprising a plurality of narrowband regions, whether to wait for a delay period, determined based on a configuration received from a network entity, before releasing a radio resource control (RRC) connection and releasing the RRC connection at a time in accordance with the determination.

Enhanced machine type communications quick idle transition after connection release

Methods and apparatuses are presented for managing a multi-subscriber identity module (SIM) user equipment (UE) such that data throughput may be improved in a dual-SIM, dual active (DSDA) scenario. For example, a method is presented that includes acquiring first timing information of a first subscription and second timing information of a second subscription. Additionally, the example method may include detecting a first conflict between communications of the first subscription and the second subscription in a time slot of a first time interval. Moreover, the example method may include estimating one or more additional conflicts in one or more subsequent time intervals based on timing of the time slot, the first timing information, and the second timing information. Further, the example method may include respectively adjusting one or more transmit block sizes (TBS) for each of the one or more subsequent time intervals.

Data throughput improvement in multi-SIM devices

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San Diego, CA, United States of America

Zhibin Dang