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Inter-RAT switching method and apparatus

A technology for inter-system handover and terminal, applied in electrical components, wireless communication, etc., can solve the problems of handover failure, unclear SIP application layer signaling process, etc.

Active Publication Date: 2017-06-06
DATANG MOBILE COMM EQUIP CO LTD
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Problems solved by technology

However, when the user meets the inter-system handover conditions and prepares to switch from LTE to GSM, if the user initiates a SIP (SessionInitiation Protocol, Session Initiation Protocol)-based VOLTE voice call at the same time, because the base station does not know the SIP application layer signaling process, it will lead to handover fail

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Embodiment Construction

[0034] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, rather than all embodiments . 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.

[0035] SRVCC (Single Radio Voice Call Continuity) is a VOLTE voice service continuity solution proposed by 3GPP. When moving between 3G (3rd-Generation, third-generation mobile communication technology) CS (Circuit Switched, Circuit Switched) networks, how to ensure the continuity of voice calls, that is, to ensure that single-radio System) controlled VoIP (Voice over Internet Protocol, network telephone) voice and CS domain voice smooth s...

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Abstract

The invention discloses an inter-RAT switching method and apparatus. The method includes the following steps: a base station determines a terminal which is to be inter-RAT switched; if the terminal is provided with a bearing which is intended for transmitting VOLTE data, and no VOLTE voice conversation has been conducted through the bearing, then no inter-RAT switching is conducted on the terminal for the moment, and if the VOLTE voice conversation by the terminal through the bearing is detected, inter-RAT switching is conducted on the terminal. According to the invention, the method and the apparatus can prevent failure of switching caused by voice call of the VOLTE which is generated simultaneously with the inter-RAT switching.

Description

technical field [0001] The present invention relates to the technical field of wireless communication, in particular to a method and device for inter-system handover. Background technique [0002] LTE (Long Term Evolution, Long Term Evolution) is a long-term evolution of the UMTS (Universal Mobile Telecommunications System, Universal Mobile Telecommunications System) technical standard formulated by the 3GPP (The 3rd Generation Partnership Project, Third Generation Partnership Project). The problem of voice transmission in LTE network is often solved by LTE network direct transmission, that is, VOLTE (Voice over LTE, voice service on LTE network). VOLTE realizes high-quality voice and video calls carried on LTE network. [0003] GSM (Global System for Mobile Communication, Global System for Mobile Communication) is currently the most widely used mobile phone standard. GSM has mature technology, stable equipment, and high cost performance. It is the main solution for voice s...

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Application Information

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IPC IPC(8): H04W36/00H04W36/14
CPCH04W36/0022H04W36/14
Inventor 刘丽君刘晓丹
Owner DATANG MOBILE COMM EQUIP CO LTD
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