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

Abstract

The embodiment of the invention discloses a method and a system for network selection under dual-network coverage, and a dual-mode terminal. The method comprises the following steps that: the dual-mode terminal searches for a wireless local area network (WLAN) signal, and judges whether the intensity of the found WLAN signal reaches a preset intensity threshold value or not; the dual-mode terminal accesses a WLAN in response to that the intensity of the WLAN signal reaches the preset intensity threshold value, and judges whether the intensity of the WLAN signal reaches the preset intensity threshold value or not on a cycle of the first preset time; the dual-mode terminal acquires a weight value based on a packet delay and a packet loss rate in response to that the intensity of the WLAN signal reaches the preset intensity threshold value, and judges whether the weight value is lower than a preset weight value threshold value or not; and the dual-mode terminal is switched from the WLAN to a mobile network in response to that the weight value is not lower than the preset weight value threshold value. By the embodiment of the invention, a wireless network to be accessed by the dual-mode terminal can be rationally selected under the dual-network coverage of the mobile network and the WLAN, the utilization rate of wireless network resources can be increased, and the quality of service of a wireless network service can be improved.

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 (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 with WLAN, alt...

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

Images