CSFB (Circuit Switched Domain Fall Back) call establishment method and user equipment

A technology for user equipment and call establishment, which is applied in the field of communication, can solve the problems of large delay in voice service call establishment and lower user experience, and achieve the effect of avoiding additional delay and reducing establishment delay

Active Publication Date: 2014-02-26
CHINA UNITED NETWORK COMM GRP CO LTD
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0004] However, in the CSFB fallback process in the prior art, in the fallback process of data service and voice service in the user equipment, the call establishment of the voice service and the connection of the data service are generally processed sequentially in a random manner. However, if the data service is prioritized When the service is connected, it is easy to cause a large delay in the establishment of the voice service call, which reduces the user experience

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  • CSFB (Circuit Switched Domain Fall Back) call establishment method and user equipment
  • CSFB (Circuit Switched Domain Fall Back) call establishment method and user equipment
  • CSFB (Circuit Switched Domain Fall Back) call establishment method and user equipment

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Embodiment Construction

[0021] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0022] On the one hand, the embodiment of the present invention provides a method for establishing a CSFB call, see figure 1 ,include:

[0023] 101. The user equipment determines whether the CSFB call process is triggered by a voice service;

[0024] In the overlapping coverage area of ​​LTE and 2G / 3G networks, when the user equipment accesses the LTE network, the CSFB process can be triggered. CSFB means that the terminal falls back to the 2G / 3G network unde...

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Abstract

The embodiment of the invention discloses a CSFB (Circuit Switched Domain Fall Back) call establishment method and user equipment, relating to the communication field, and being capable of realizing the dispatching priority of radio resource of CS (Circuit Switched) service in CSFB and reducing the establishment time delay of a CSFB call. The method provided by the embodiment of the invention comprises the steps that the user equipment judges whether a CSFB call flow is triggered by a voice service; if the user equipment judges that the CSFB call flow is triggered by the voice service and the user equipment has a data service request, the user equipment sends a CS domain resource request message to a first base station and delays to send a PS (Packet Switch) domain resource request message to the first base station, so that the first base station gives priority to dispatch CS domain radio resource to the voice service of the user equipment; after a predetermined condition is satisfied, the user equipment sends the PS domain resource request message to the first base station so that the first base station dispatches PS domain radio resource to the data service of the user equipment.

Description

technical field [0001] The present invention relates to the communication field, in particular to a CSFB call establishment method and user equipment. Background technique [0002] Circuit Switched Domain Fall Back (CSFB for short) can enable user equipment to initiate circuit switched (Circuit Switched, CS for short) services such as voice under LTE access, receive paging for CS services such as voice, and be able to The ongoing packet switching (Packet Switch, PS) service of the terminal under the access of the Long Term Evolution (LTE for short) system is correctly processed. In CSFB technology, in the dual coverage area of ​​LTE and 2G / 3G, for voice, location services (LCS for short) and supplementary services, user equipment can trigger a fallback from LTE access to the second generation mobile communication technology (2rd generation -generation (2G for short) / third-generation mobile communication technology (3rd-generation, 3G for short) network access and CS service...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W76/02H04W72/04
Inventor 刘天爽王健全赫罡高功应陈婉珺林琳
Owner CHINA UNITED NETWORK COMM GRP CO LTD
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