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Method and devices for avoiding call failures in dual-SIM devices

A technology of call failure and wireless devices, which is applied in digital transmission systems, data exchange networks, electrical components, etc., and can solve problems such as dropped calls, expensive and inconvenient wireless device users, etc.

Inactive Publication Date: 2015-11-04
QUALCOMM INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, if no better cell is available for handover, the call will be dropped when signal conditions degrade below the minimum sustainable link
This call failure can be expensive and inconvenient for the wireless device user
[0006] Although a strong radio signal of the network associated with the second SIM may exist on the DSDA device, conventional DSDA devices cannot utilize the resources of the second network to continue the call or data session

Method used

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  • Method and devices for avoiding call failures in dual-SIM devices
  • Method and devices for avoiding call failures in dual-SIM devices
  • Method and devices for avoiding call failures in dual-SIM devices

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Embodiment Construction

[0020] Various embodiments will be described in detail with reference to the accompanying drawings. Wherever possible, the same reference numbers will be used throughout the drawings to refer to the same or like parts. References made to particular examples and implementations are for illustrative purposes, and are not intended to limit the scope of the invention or the claims.

[0021] The word "exemplary" is used herein to mean "serving as an example, instance, or illustration." Any implementation described herein as "exemplary" should not necessarily be construed as preferred or advantageous over other implementations.

[0022] The terms "wireless device" and "wireless communication device" are used interchangeably herein to refer to any or all of the following: cellular telephones, smart phones, personal or mobile multimedia players, personal data assistants (PDAs), ), portable computers, tablet computers, smartbooks, palmtop computers, wireless e-mail receivers, cellula...

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Abstract

Systems and methods use the capabilities of multiple SIMs to prevent calls from being dropped on a multi-SIM wireless device. In the various embodiments, network conditions may be monitored for signal quality during an active call. When signal quality on the network deteriorates, the multi-SIM wireless device may switch the active call to a network associated with a different SIM that provides better service. To enable the switch, the multi-SIM wireless device may setup a conference call with the called party and the different SIM. In the various embodiments, the multi-SIM wireless devices may be a dual-SIM dual active (DSDA) wireless device.

Description

technical field [0001] The present invention relates generally to multi-SIM wireless communication devices, and more particularly to methods of using multi-SIM capabilities to avoid dropped calls due to poor signal strength. Background technique [0002] Cellular telephone communications, such as voice calls, etc., involving at least one wireless device routinely fail because the wireless device enters a location lacking a particular network coverage (ie, a "no-signal zone") or a location of high network congestion. Dropping a call, particularly an emergency call, can be frustrating and inconvenient for participants in a telephone call. Failure of a data communication session can be costly and inconvenient to a wireless device user. Current wireless devices can enable data transmission over multiple communication paths, but wireless devices lack methods to take advantage of simultaneous transmission across multiple communication paths to improve data transmission reliabilit...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W36/14H04W4/16H04W88/06
CPCH04W4/16H04L12/1827H04L51/38H04M2242/04H04W8/183H04W36/14H04W88/06H04L51/58H04W36/142
Inventor 苏巴拉尤杜·穆蒂亚文卡塔·克里希纳·穆尔蒂·贾亚瓦拉普希万克·纳亚克
Owner QUALCOMM INC