Qualcomm Incorporated

Other

Uttam Pattanayak

Reza Shahidi

Qingxin Chen

Adam Hebein

Bhupesh Manoharlal Umatt

Carlos Marcelo Dias Pazos

Osama Lotfallah

Cheol Hee Park

Yongsheng Shi

Vikram Singh

Abhishek Bhatnagar

Subashini Krishnamurthy

Shivank Nayak

Qin Xue Frantti

Flora Pui San Chan

Rishav Rej

Manisha Priyadarshini

Brian A'hearn

Shailesh Maheshwari

Francesco Grilli

Thomas Klingenbrunn

Shyamal Ramachandran

Suli Zhao

Jun Hu

Suresh Sanka

Gurvinder Singh Chhabra

Sathish Krishnamoorthy

Krishna Chaitanya Mukkera

Mona Agrawal

Venkata A Naidu Babbadi

Cherng-Shung Hsu

Nieyan Geng

Hemanth Kumar Rayapati

Ajit Gupta

Pankaj Subhash Vasandani

Baojun Lu

Sandeep Ramannavar

Kanuganti Rajeswar Reddy

Andrzej Yurkevich

Pradeep Kodali

Asimava Bera

Sudhendra K Gupta

Sandeep Arugonda

Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may establish, using a first subscription of the UE, a first communication connection associated with a first service. The UE may establish, using a second subscription of the UE, a second communication connection associated with a second service. The UE may operate in a dual subscriber identity module (SIM) dual active (DSDA) mode based at least in part on establishing the first communication connection and establishing the second communication connection. The UE may perform an action to maintain concurrent services, including the first service and the second service, while operating in the DSDA mode. Numerous other aspects are described.

Maintaining concurrent services in a dual active mode

Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may detect that a first subscription, of a plurality of subscriptions associated with the UE, is associated with an active service on a first cellular network. The UE may search, for a second subscription of the plurality of subscriptions, for radio access technologies (RATs) and frequency bands that are compatible with a dual active mode of the UE. In some aspects, the UE may detect that the active service on the first cellular network has ended. Accordingly, the UE may search, for the second subscription, for RATs and frequency bands that are compatible with the dual active mode of the UE and for RATs and frequency bands that are incompatible with the dual active mode, before expiry of a timer associated with a power saving state. Numerous other aspects are described.

Radio access technology searching in dual active mode

Certain aspects of the present disclosure provide techniques for using a message to update a user equipment (UE) radio capability. For example a method of wireless communication by a user equipment (UE) may include generating a tracking area update (TAU) message with an indication of a UE radio capability update, transmitting the TAU message, and detaching and reattaching the UE from a network if a UE capability inquiry is not received from the network or a capability mismatch between the UE and the network is detected.

Apparatus and method of using tracking area update (TAU) message to update UE radio capability

A method for call setup for a voice-over-long-term evolution (VoLTE) call on multi-subscriber identity module (SIM) multi-standby (MSMS) mobile communication device includes: receiving a long-term evolution (LTE) page; determining whether a WiFi connection is available; in response to determining that the WiFi connection is not available, determining whether the LTE page was received on a non-dedicated data subscription (DDS) subscription; and in response to determining that the LTE page was received on the non-DDS subscription, granting a highest priority for communication activities to an LTE page response on the non-DDS subscription.

Apparatus and method of improving VoLTE/VT call setup successful rate in a DSDS device

Methods and apparatus are provided for device configuration (e.g., feature segment loading and system selection). Certain aspects of the present disclosure generally relate to operating a user equipment (UE) in a first radio access network (RAN) with a first set of modem features that supports the first RAN, detecting a second RAN not supported by the first set of modem features, and rebooting the modem software to load a second set of modem features that supports the detected RAN. For certain aspects, the first RAN may be a Time Division-Synchronous Code Division Multiple Access (TD-SCDMA) network and the second RAN may be a Wideband-Code Division Multiple Access (W-CDMA) network or long term evolution network. This allows features to be loaded into memory (e.g., only) when they are required to support a detected RAN, rather than loading an entire image, thereby conserving DRAM and increasing efficiency.

Methods and apparatus for updating a device configuration

Various embodiments include methods implemented on a mobile communication device for acquiring service when the mobile communication device has a first subscription and a second subscription that belong to the same network operator. The methods may include receiving a first equivalent public land mobile network (EPLMN) database associated with the first subscription, determining whether a second EPLMN database associated with the second subscription is the same as the first EPLMN database, and modifying the second EPLMN database based on the first EPLMN database in response to determining that the second EPLMN database associated with the second subscription is not the same as the first EPLMN database.

Symmetric equivalent public land mobile network (EPLMN) configurations among subscriptions

A mobile communication device includes a domain selection feature that allows a user to select a domain preference such as a circuit switched (CS) voice domain preference, a packet switched (PS) data domain preference, or a (CS+PS) domain preference. The mobile device receives Public Land Mobile Network (PLMN) ID and domain availability information from one or more PLMNs. A PLMN priority list is generated on the basis of the received PLMN information and the user domain preference selection. PLMNs having the user selected service available are assigned a higher priority than those that don't currently have the service, whereby an original PLMN list may be updated. Thereby, the mobile device is more likely to obtain the desired service without resorting to a time consuming manual selection process.

Domain specific PLMN selection

In an embodiment, a wireless communications device (WCD) is provisioned with a plurality of subscriber identity modules (SIMs). The WCD determines a first set of bands (BAND) that is associated with a first SIM and a second set of bands (BAND) associated with a second SIM. In a first embodiment, the WCD generates a combined band for the first and second SIMs and then scans the combined band to detect a set of target networks for camping in association with at least the first and second SIMs. In a second embodiment, the WCD scans BANDto detect a first set of target networks for camping in association with the first SIM, and then excludes, from the BAND, bands that overlap with BAND. The WCD then scans the reduced BANDto detect to detect a second set of target networks for camping in association with the second SIM.

Select band-scanning by a multi-sim user equipment (UE) in a wireless communications system

A particular method includes processing a call connection between a user equipment (UE) device and a first network. The UE device is coupled to or includes at least a first subscriber identity module (SIM) that is associated with the first network and a second SIM that is associated with a second network. The method includes sending a status update message to the second network associated with the second SIM. The status update message instructs the second network to provide a busy status message in response to receiving a call connection request that is directed to the second SIM.

Multi-SIM status update system

A mobile communication device prior to establishing a communication session needs first to connect to a reachable network. To facilitate the search for the reachable network, the mobile communication device is preprogrammed intermediate parameters which lead to a plurality of reachable networks that are preselected based on a predetermined criterion.

Wireless network search

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San Diego, CA, United States of America

Uttam Pattanayak