Reduced call failure rate in devices capable of supporting Multiple Subscriber Identity Modules

A technology for identifying modules and call failures, applied in connection management, network topology, electrical components, etc., can solve problems such as failure to guarantee success

Inactive Publication Date: 2020-11-27
QUALCOMM INC
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In case of failure, the mobile communication device will retry the emergency call on the same subscription multiple times immediately or after a specified time without guarantee of success

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Reduced call failure rate in devices capable of supporting Multiple Subscriber Identity Modules
  • Reduced call failure rate in devices capable of supporting Multiple Subscriber Identity Modules
  • Reduced call failure rate in devices capable of supporting Multiple Subscriber Identity Modules

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0018] 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 implemented in various other forms. Furthermore, various omissions, substitutions and changes in the form of the example methods and systems described herein may be made without departing from the scope of protection.

[0019] Figure 1A is a block diagram illustrating a mobile communication device 100 according to various embodiments. like Figure 1A As shown, the mobile communication device 100 may include a control unit 110 , a communication unit 120 , an antenna 130 , a first SIM 140 , a second SIM 150 , an interface device 170 and a storage unit 180 .

[0020] Mobile communication device 100 may be, for example and without limitation, a mobile phone, smartphone, tablet, computer, etc. capable of communicating with one or more wireless networks. One of ordinary...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

A method for reducing call failure rates on a multi-subscriber identity module (SIM) mobile communication device comprising: selecting a first SIM camped on a visited public land mobile network (VPLMN); attempting call origination on the first SIM determining whether the call set-up on the first SIM on the VPLMN was successful; in response to determining that the call set-up on the first SIM was unsuccessful, determining whether the second SIM resides on a home public land mobile network (HPLMN); and in response to determining A second SIM resides on the HPLMN, selecting the second SIM residing on the HPLMN; and attempting call origination using the second SIM.

Description

Background technique [0001] Emergency calls on a subscription may fail for various reasons. For example, the core network may reject the call. For example, an IMSI UNKNOWN IN VLR / ILLEGALME may occur at a Mobile Switching Center (MSC) when a call is set up. These failures may occur when the mobile communication device is initiating a call on a visited public land mobile network (VPLMN). [0002] In some countries, the network requires that the International Mobile Subscriber Identity (IMSI) be used for emergency calls. Furthermore, the network may reject the emergency call if the IMSI does not belong to the network's Home Location Register (HLR) database. [0003] In case of failure, the mobile communication device will retry the emergency call on the same subscription several times immediately or after a certain time without guaranteeing success. Contents of the invention [0004] Apparatus and methods for reducing a call failure rate in a mobile communication device cap...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & AuthorityPatents(China)
IPC IPC(8): H04W4/16H04W4/90H04W8/18H04W48/18H04W60/00
CPCH04W4/16H04W8/183H04W48/18H04W60/005H04W84/042H04W4/90H04W76/18H04W76/50H04W88/06H04W24/02
InventorA·N·R·博杜鲁O·N·乌帕德亚雅V·K·M·贾亚瓦拉普
OwnerQUALCOMM INC