LTE and WLAN interconnecting system and switching method

Abstract

The invention provides an LTE and WLAN interconnecting system and a switching method; and the system introduces the entity of a virtual base station under an LTE architecture, and accesses the entity into the interface of the LTE as WLAN. On the LTE side, the virtual base station remains transparent relative to the LTE side, and is provided with the functions of a general LTE base station. On theWLAN side, the virtual base station can control the WLAN access point. The switching between the LTE and the WLAN is realized through the virtual base station through a standard X2 interface. A second layer tunneling protocol or an Ethernet tunneling protocol is adopted between the virtual base station and the WLAN access point to realize the transmission and the receiving of data and signaling during the switching process, and the WLAN serves as the bottom layered transmission channel of the data and the signaling of an LTE system. The method has the advantage that for the LTE, the switchingprocess is kept consistent with the LTE switching process, which has very small impact on the traditional LTE. The WLAN is connected with the LTE in a tight coupling way, thereby greatly meeting the business requirement requirements, reducing the time delay caused by system switching, and ensuring the system performance.

Description

technical field [0001] The present invention relates to the interconnection and handover control issues of different wireless communication systems, and in particular to the interconnection system architecture of LTE (3GPP Long Term Evolution System) and WLAN (Wireless Local Area Network) and the dual-mode terminal under this system architecture between the two networks to switch between. Background technique [0002] With the diversification of wireless communication technologies, wireless networks such as GSM, UMTS, CDMA, Wi-Fi and LTE will coexist for a period of time. The coexistence and integration of multiple types of networks is the future development trend of mobile communications. Existing studies on heterogeneous network access and handover mainly focus on UMTS, CDMA and WLAN, and there are two modes of convergence between networks: loose coupling and tight coupling. Taking WLAN and UMTS as an example, under the loosely coupled architecture, the access networks of...

AI Technical Summary

Problems solved by technology

However, these methods are all based on the network layer and above to complete heterogeneous switching. These switching methods do not have high requirements for the coupling of heterogeneous systems, so they also have a great impact on the performance of switching, especially in the passage between heterogeneous networks. The ability of admission control to achieve collaborative resource optimization management and network load optimization management is weak

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