Method and system for network selection under dual-network coverage, and dual-mode terminal

Abstract

The embodiment of the present invention discloses a network selection method and system under dual-network coverage, and a dual-mode terminal, wherein the method includes: the dual-mode terminal searches for WLAN signals, and judges whether the strength of the searched WLAN signal reaches a preset strength threshold value; in response to the WLAN signal strength reaching the preset strength threshold, access the WLAN, and measure whether the WLAN signal strength reaches the preset strength threshold with the first preset time period; in response to the WLAN signal strength reaching the preset strength Threshold value, obtain the weighted value based on packet delay and packet loss rate index and identify whether the weighted value is less than the preset weighted value threshold value; in response to the weighted value is not less than the preset weighted value threshold value, switch from WLAN to mobile network. The embodiment of the present invention can reasonably select the wireless network accessed by the dual-mode terminal under the dual network coverage of the mobile network and the WLAN network, thereby improving the utilization rate of wireless network resources and the service quality of wireless network services.

Description

technical field [0001] The invention relates to communication technology, in particular to a network selection method and system under dual network coverage, and a dual-mode terminal. Background technique [0002] Both wireless networks, a mobile network and a wireless local area network (Wireless Local Area Network, WLAN for short), can implement wireless data access. At present, since WLAN works in the 2.4G or 5.8G frequency band, the coverage of a single access point (Access Point, hereinafter referred to as: AP) is about tens of meters to a hundred meters, which is obviously different from that of a single base station in a mobile network. The service radius ranges from 100 meters to several kilometers. However, compared with the mobile network, WLAN can provide high-speed Internet access rate. For example, WLAN based on IEEE802.11g standard theoretically supports the highest Internet access rate of 54Mb / s, and the unit Internet access cost is relatively low. Compared ...

AI Technical Summary

Problems solved by technology

Therefore, the existing technology only selects the wireless network to be accessed based on the strength of the wireless signal. There is a certain degree of contingency, which cannot make full use of the two wireless network resources, and may cause congestion in the WLAN network and signal interference between different users. , which affects the normal use of wireless network services by users and reduces the service quality of wireless network services

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