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Method and apparatus for canceling a circuit switched fallback

A circuit-switched fallback and packet-switched technology, applied in electrical components, connection management, digital transmission systems, etc., to solve problems such as time delay, service interference, and resource exhaustion

Active Publication Date: 2014-05-07
INTERDIGITAL PATENT HLDG INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This will cause issues such as service disruption, time delays or unnecessary resource exhaustion

Method used

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  • Method and apparatus for canceling a circuit switched fallback
  • Method and apparatus for canceling a circuit switched fallback
  • Method and apparatus for canceling a circuit switched fallback

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Experimental program
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Embodiment

[0050] CLAIMS 1. A method for canceling a communication session of a wireless transmit / receive unit (WTRU), the method comprising:

[0051] transmitting a first message to initiate a communication session; and

[0052] A second message is transmitted indicating a request to cancel the communication session.

[0053] 2. The method of embodiment 1, wherein the communication session is a circuit switched (CS) session.

[0054] 3. The method of embodiment 2, wherein canceling the CS session comprises canceling a CS Fallback (CSFB) procedure.

[0055] 4. The method according to any one of the preceding embodiments, further comprising:

[0056] determine whether there is an ongoing communication session; and

[0057] The ongoing communication session is continued according to the current radio access technology (RAT) without performing an intersystem change.

[0058] 5. The method of embodiment 4, wherein the ongoing communication session is a Packet Switched (PS) session.

[005...

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Abstract

A method and apparatus may be used to cancel a communication session. The apparatus may transmit a first message to initiate a communication session and then transmit a second message that indicates a request to cancel the communication session. If the apparatus determines that there is an ongoing Packet Switched (PS) session, the apparatus may continue the ongoing PS session on a current Radio Access Technology (RAT) without performing an intersystem change. If the apparatus receives a handover (HO) command, the apparatus may transmit a message to reject the HO command, or it may ignore the HO command.

Description

[0001] Cross References to Related Applications [0002] This application claims the benefit of US Provisional Application No. 61 / 142,787, filed January 6, 2009, the contents of which are incorporated herein by reference. technical field [0003] The present invention relates to wireless communications. Background technique [0004] In wireless communications, it has been desirable to develop a mechanism that enables a wireless transmit / receive unit (WTRU) to initiate or receive communications without service interference during an ongoing session. For example, in the case of the 3rd Generation Partnership Project (3GPP) Long Term Evolution (LTE), this objective manifests itself in the development of a packet-switched ( A mechanism capable of originating (i.e. originating) or receiving (i.e. terminating) Circuit Switched (CS) services in the PS) domain, or vice versa. Examples of CS services may include at least services such as CS voice calls, Short Message Service (SMS),...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W76/06H04W36/14H04W4/00
CPCH04W76/025H04W76/027H04W4/00H04W36/0022H04W76/18H04W76/15H04W36/14H04W88/06H04L9/40
Inventor M·瓦特法U·奥维拉-赫恩安德茨B·阿吉里S·索马桑德朗
Owner INTERDIGITAL PATENT HLDG INC