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Tune-away method and apparatus for circuit-switched calls on virtual subscriber identity modules

A subscriber identity module, circuit switching technology, applied in security devices, electrical components, transmission systems, etc., can solve problems such as lost handover messages and/or increased measurement values, CS call delays, and complete denial of service

Active Publication Date: 2021-07-06
QUALCOMM INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there may be issues while activating the VSIMCS connection
[0004] When activating a VSIM CS connection, a long tune-away could cause a delay in establishing a CS call
Furthermore, since the VSIM network interprets this time of receiving a response to the authentication as abnormal, a prolonged tune-away could result in an abnormal CS call release or a complete denial of service
Furthermore, if the mobile communication device is in motion, the chance of missing handover messages and / or measurements increases
Also, if the soft SIM subscription is in motion, long tune-away durations may be required to accommodate cell reselection, system information block (SIB) reading, acquisition, etc.

Method used

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  • Tune-away method and apparatus for circuit-switched calls on virtual subscriber identity modules
  • Tune-away method and apparatus for circuit-switched calls on virtual subscriber identity modules
  • Tune-away method and apparatus for circuit-switched calls on virtual subscriber identity modules

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Embodiment Construction

[0023] While certain embodiments have been described, these embodiments have been presented by way of example only, and are not intended to limit the scope. The devices, methods, and systems described herein may be embodied using a variety of other forms. Furthermore, various omissions, substitutions and changes in the form of the exemplary methods and systems described herein may be made without departing from the scope of protection.

[0024] Figure 1A is a block diagram illustrating a mobile communication device 100 according to various embodiments. Such as Figure 1A As shown in , the mobile communication device 100 may include a control unit 110 , a communication unit 120 , an antenna 130 , a first Subscriber Identity Module (SIM) 140 , a second SIM 150 , a user interface device 170 and a memory 180 .

[0025] Mobile communication device 100 may be, for example and without limitation, a mobile phone, smart phone, tablet device, computer, etc., capable of communicating w...

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PUM

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Abstract

A method for authenticating a circuit-switched (CS) call on a virtual subscriber identity module (VSIM) includes using authentication information obtained from a remote server through a software subscriber identity module (soft SIM) connection with the remote server, for A packet-switched (PS) call connection is used to authenticate the VSIM; between the VSIM and the first communication network, a call connection is initiated over a CS radio access technology (RAT); in response to an authentication request for a call connection over the CS RAT, the VSIM The PS connection authenticates the VSIM CS call connection to the first communication network.

Description

Background technique [0001] A Virtual SIM (VSIM) is Subscriber Identity Module (SIM) software that acts as a SIM interface with a mobile communication device. A physical SIM corresponding to the VSIM may be available at the remote server. When a physical SIM is required for authentication purposes, the VSIM uses a secure Internet Protocol (IP) tunnel to access a remote SIM server. In order for the VSIM to establish a secure IP tunnel to the remote SIM server, the mobile communication device can use a software SIM (soft SIM). The soft SIM can be preloaded or downloaded into the secure file system of the mobile communication device. The soft SIM can remain preloaded in the mobile communication device, which can be used by the mobile communication device to only access a remote SIM server using the Remote SIM Access Protocol (RSAP) through a secure IP tunnel. [0002] A typical use of a VSIM may be when the mobile communication device is roaming. A user may roam to a foreign ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W8/20H04W8/18H04W12/06H04W88/06
CPCH04L63/0853H04W8/183H04W8/205H04W12/06H04W88/06H04W12/42
Inventor H·杜塔R·S·阿纳达K·K·杨纳库拉S·桑卡V·古普塔
Owner QUALCOMM INC