Invention Application
- Patent Title: ACHIEVING DUAL SIM DUAL ACTIVE OPERATION IN AN LTE + LTE DEVICE BY DOWNGRADING USER EQUIPMENT CATEGORY TO 1 FOR ONE SIM
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Application No.: US15078775Application Date: 2016-03-23
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Publication No.: US20170280366A1Publication Date: 2017-09-28
- Inventor: Debesh Kumar Sahu , Sagar , Tushar Gupta
- Applicant: QUALCOMM Incorporated
- Main IPC: H04W36/32
- IPC: H04W36/32 ; H04W60/00 ; H04W60/06

Abstract:
A method for performing a dedicated data subscription (DDS) switch on a multi subscriber identity module multi-active (MSMA) mobile communication device includes: initiating a DDS switch from a first subscription to a second subscription; determining whether a first communication network associated with the first subscription supports user equipment (UE) capability update via a tracking area update (TAU) procedure; in response to determining that the first communication network supports UE capability update via a TAU procedure, initiating a TAU procedure on the first subscription with the first communication network; and reporting a UE category 1 capability to the first communication network on the first subscription for the mobile communication device during the TAU procedure on the first subscription.
Information query