Method and system for switching from WLAN (Wireless Local Area Network) to 3G (The 3rd Generation Telecommunication) through home node B (HNB)

Abstract

The invention discloses method and system for switching from a WLAN (Wireless Local Area Network) to 3G (The 3rd Generation Telecommunication) through a home node B (HNB). The method comprises the following steps: a measurement controller monitors the WLAN signal state of a user terminal at regular time, wherein the signal state includes signal strength and transmission rate; according to the change condition of the signal state, the measurement controller judges whether to conduct active switching from the WLAN to the 3G; when the judgment result of the measurement controller is to execute the active switching from the WLAN to the 3G, an active switching command is sent to the HNB; and the HNB receives the active switching command so as to conduct active switching from the WLAN to the 3G. According to the method and the system, the user terminal can be controlled to conduct switching from the WLAN to the 3G in advance before the user terminal loses the WLAN connection, thereby avoiding switching of the user terminal between the WLAN and the 3G when the WLAN signal state is unstable, and guaranteeing business stability of UE (User Equipment) and continuity of data connection.

Description

technical field [0001] The invention relates to the technical field of wireless network handover, in particular to a method and system for home base stations to realize handover from WLAN to 3G. Background technique [0002] Home NodeB (Home NodeB), also known as Femto, is a kind of home base station equipment with low transmission power, small-scale coverage, fixed broadband access network as the backhaul, and mainly for home customer applications. The equipment has low transmission power (maximum power 20mW), small size, works in the authorized frequency band, and the coverage radius is generally 5-20 meters. Its main function is to provide users with higher service rates and reduce the need for high-speed services. cost, and at the same time, make up for the lack of coverage of existing distributed cellular wireless communication systems. [0003] With the popularity of smart terminals and the vigorous development of the mobile Internet, users' demand for wireless bandwi...

AI Technical Summary

Problems solved by technology

[0006] In the prior art, there is no guarantee that the user terminal will be controlled in advance to switch from WLAN to 3G before the user terminal loses the WLAN connection. Therefore, when the WLAN signal status is unstable, the user terminal will often switch between WLAN and 3G, which cannot guarantee that the UE Business stability and continuity of data connections

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