User device and its switching method between different IP networks

An IP network and user equipment technology, applied in wireless network protocols, data switching networks, digital transmission systems, etc., can solve the problems affecting user call quality, user equipment dropped calls, and no user equipment is proposed. The effect of avoiding dropped calls and improving call quality

Active Publication Date: 2008-04-30
GLOBAL INNOVATION AGGREGATORS LLC
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

[0007] At present, the industry has proposed a VCC network handover scheme for user equipment between CS network and IP network, but has not proposed a scheme for user equipment handover between IP networks. However, when the quality of the IP network where the user equipment is located becomes poor, if the If switching to a new IP network, the user equipment may also experience call drop, affecting the quality of user calls

Method used

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  • User device and its switching method between different IP networks
  • User device and its switching method between different IP networks
  • User device and its switching method between different IP networks

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Embodiment Construction

[0051] The core of the present invention is that the user equipment to be handed over is based on the dialogue established in the IP network to be handed over, and the voice call continuity application server and the opposite end perform session renegotiation for switching to the target IP network. Switch to the target IP network after the session renegotiation is completed, wherein the IP network in the present invention may include a wireless local access network (Wireless Local Access Network, WLAN) and a high rate packet data (High Rate Packet Data, HRPD) network, etc., here No need to go into details, since the user equipment can be switched between different IP networks, the present invention avoids the user equipment from dropping calls and greatly improves the quality of the user's call. The specific embodiments are described below.

[0052] Reference separately Figure 2-Figure 5 , are respectively the main flow charts of the first to fourth preferred embodiments of t...

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Abstract

A method for switching the user equipment among different IP networks, the method includes that: the user equipment to be switched, carrying the session renegotiation for switching to the object IP network with the opposite end, bases on the dialog which has been established at the IP network to be switched, and via the voice call continuity application server, switching to the object IP network after the session renegotiation with the opposite end. A corresponding voice call continuity application server, a proxy call session controlling function entity and a user equipment.

Description

technical field [0001] The present invention relates to the technical field of IP Multimedia Subsystem (IP Multimedia Subsystem, IMS), more specifically, the present invention relates to a kind of VCC application server, proxy call session control function entity, user equipment and user equipment switching between different IP networks method. Background technique [0002] IMS is a subsystem supporting IP multimedia services proposed by the 3rd Generation Partnership Project (3GPP) in Release 5 (R5). Its core feature is the use of Session Initial Protocol (Session Initial Protocol, SIP) protocol and irrelevance to access, IMS provides a general service platform for future multimedia applications, and it is an important step towards an all-IP network service provision system. [0003] The IMS standard has two versions, R5 and R6, derived from the 3GPP standard system. After the R6 version was basically stable in March 2005, 3GPP released the R7 version, which not only enhan...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04Q7/32H04Q7/38H04L12/56H04W36/14H04W80/04
CPCH04L29/06217H04L65/1016H04W36/0011H04L65/1093H04L29/06374H04W36/14H04W80/10H04L65/1095
Inventor 龙水平
Owner GLOBAL INNOVATION AGGREGATORS LLC
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