Qualcomm Incorporated

Microsoft Technology Licensing, LLC

Ankur Srivastava

Mohammad Ashraf

Rahul Maringanti

Arun Prasanth Balasubramanian

Jason Tan

Kishore Kumar Yannakula

Vivek Bindal

Tom Chin

Arnaud Meylan

Shailesh Maheshwari

Leena Zacharias

Tao Liu

Suresh Sanka

Neha Goel

Ravi Kanth Kotreka

Bhanu Kiran Janga

Ajit Gupta

Moshe Vainer

Karthik Thirukannan

Neeraja Reddy

Kranthi Kumar Guduru

Anushka Nayse

A wireless communication device is described. The wireless communication device includes a memory and a processor in electronic communication with the memory. The processor is configured to determine a packet data convergence protocol (PDCP) packet count corresponding to a last radio link control (RLC) packet received in-sequence. The processor is also configured to detect a missing PDCP packet based on a comparison of the PDCP packet count and a sequence number of a last PDCP packet received in-sequence.

Layered missing packet detection

Aspects of the present disclosure relate to optimization of packet processing when packets are received out of order in sequence. For example, a user equipment (UE) may determine whether a difference between a sequence number of a first packet and a sequence number of a second packet received subsequent to receiving the first packet exceeds a sequence jump threshold. The UE may disregard the second packet from processing in response to at least determining that the difference is greater than the sequence jump threshold. The UE may receive and process a plurality of packets respectively associated with a plurality of sequence numbers that are greater than the sequence number of the first packet and less than the sequence number of the second packet.

Downlink data stall optimization by addressing an out-of-order packet sequence

Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive information identifying a recovery time associated with packet data convergence protocol (PDCP) communication using a reordering timer, wherein a distribution of recovered PDCP counts associated with the PDCP communication is associated with a configured characteristic for a packet recovery time. The UE may communicate on a link using a communication configuration associated with a correlation between the packet recovery time and a link characteristic. Numerous other aspects are described.

Latency management for data traffic

Certain aspects of the present disclosure provide techniques for A method for wireless communication by a user equipment (UE), comprising initiating a timer upon reception of a first segmented packet of a plurality of packets of an RLC physical data unit (PDU) at radio link control (RLC) layer, resetting the timer when a packet data convergence protocol (PDCP) layer receives an RLC PDU from the RLC layer, and upon expiry of the timer, initiating a radio recourse control (RRC) connection reestablishment (RRE) procedure with a network.

Mechanism to recover receiver radio link control after multiple unsuccessful automatic repeat query attempts

In an aspect of the disclosure, a method, a computer-readable medium, and an apparatus are provided. The apparatus may receive a priority list associated with preferred radio frequencies from a serving base station. In certain aspects, each radio frequency of the preferred radio frequencies associated with a first set of base station may operate on a first RAT. In certain other aspects, the apparatus may determine if the UE is able to reselect to the first RAT. In certain other aspects, the apparatus may perform a rank-based cell reselection procedure based on signal strength when the UE is unable to reselect to the first RAT.

Switching from a priority-based reselection mechanism to a rank-based reselection mechanism

A multi-subscriber identity module (SIM) wireless communication device performing early camping in initial cell selection or reselection may detect an active communication on a modem stack associated with a first SIM, and a condition requiring initial cell selection/reselection on a modem stack associated with a second SIM. In response to receiving a paging message for the second SIM, the wireless communication device may trigger a radio resource to tune to a frequency of an identified target cell of the second SIM, receive a first portion of system information broadcast by the identified target cell, and determine whether initial cell selection/reselection to the identified target cell is complete. In response to determining that initial cell selection/reselection to the identified target cell is not complete, the wireless communication device may save the received paging message, and raise a priority level for the activity on the modem stack associated with the second SIM.

Systems and methods for improving call performance during cell selection on a multi-subscriber identity module (SIM) wireless communication device

Merging user interface (UI) object trees comprising UI trees from different technologies (e.g., host and one or more guest technologies) can involve registering guest technologies with a technology adapter layer, for example, used to manage UI tree merging. Further, identifying whether a UI object can be switched from a first technology to a second technology can comprise using a host technology provider to identify if a UI object can be switched, when navigating down the UI tree. When navigating up the UI tree, information stored by the technology adapter layer can be used to identify if a UI object can be switched. Additionally, identifying the second technology can comprise having the technology adapter layer request technology switching capability information from registered technologies for the UI object when navigating down the UI tree. When navigating up the UI tree, information stored by the technology adapter layer can be used to identify the second technology. Also, converting the UI object from the first technology to the second technology in the UI tree can be performed using a COM-based conversion.

Merged tree-view UI objects

A method for cell reselection for a mobile communication device includes: selecting a best neighbor cell of a currently serving cell for a first subscription; starting a reselection timer; performing a plurality of signal measurements on the best neighbor cell; determining if a time period indicated by the reselection timer is expired; in response to a determination that the time period is expired, determining if a second subscription is engaged in an activity having higher priority than cell reselection; and in response to a determination that the second subscription is engaged in the activity having higher priority than cell reselection, inhibiting cell reselection on the first subscription.

Method for managing cell reselection in multi-subscriber identity module devices

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Hyderabad Telangana, India

Ankur Srivastava