Methods and apparatus to maintain call continuity

US9215684B2 · US · B2

Patent metadata
FieldValue
Publication numberUS-9215684-B2
Application numberUS-201414172248-A
CountryUS
Kind codeB2
Filing dateFeb 4, 2014
Priority dateAug 18, 2010
Publication dateDec 15, 2015
Grant dateDec 15, 2015

How to read this patent

A practical reading order for non-experts. Skip the full description unless you need deep technical detail.

  1. Title

    What the patent document calls the invention.

  2. Abstract

    A short plain-language summary of the technical disclosure.

  3. Assignees and inventors

    Who owns or filed the patent and who is credited as inventor.

  4. Key dates

    Filing, priority, publication, and grant dates set the timeline.

  5. First independent claim

    The legal scope of protection — read this for what is actually claimed.

  6. CPC / IPC classifications

    Technology tags used to group this patent with similar filings.

  7. Citations and related patents

    Prior art links and similar publications in this corpus.

Abstract

Official abstract text for this publication.

Example methods and apparatus to maintain call continuity are disclosed. A disclosed example apparatus to control a user equipment (UE) mode includes the UE to initiate a tracking area updating (TAU) procedure in an evolved packet system (EPS) mobility management (EMM) connected (EMM_CONNECTED) mode, a state monitor to identify a lack of a voice service in response to the TAU procedure being successful, and a bearer monitor to identify a bearer context, the UE to stay in the EMM_CONNECTED mode until radio bearers associated with the bearer context are released.

First claim

Opening claim text (preview).

What is claimed is: 1. A user equipment (UE) configured to: initiate a tracking area updating (TAU) procedure in an evolved packet system (EPS) mobility management (EMM) connected (EMM_CONNECTED) mode; identify a lack of a voice service in response to the TAU procedure being successful; identify a bearer context; and stay in the EMM_CONNECTED mode until a radio bearer associated with the bearer context are released. 2. A UE as defined in claim 1 , fu…

Assignees

Inventors

Classifications

Patent family

Related publications grouped by family.

External sources

Next steps

Free tools are coming soon. Tell us what you want to track and we'll notify you.

Frequently asked questions

Answers are generated from the same data shown on this page.

What does patent US9215684B2 cover?
Example methods and apparatus to maintain call continuity are disclosed. A disclosed example apparatus to control a user equipment (UE) mode includes the UE to initiate a tracking area updating (TAU) procedure in an evolved packet system (EPS) mobility management (EMM) connected (EMM_CONNECTED) mode, a state monitor to identify a lack of a voice service in response to the TAU procedure being su…
Who is the assignee on this patent?
Blackberry Ltd
What technology area does this patent fall under?
Primary CPC classification H04W60/00. Mapped technology areas include Electricity.
When was this patent published?
Publication date Tue Dec 15 2015 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
What related patents are in patentsdb?
We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).