Recognition-based access network selecting method

Abstract

The invention discloses a recognition-based access network selecting method, mainly used for solving the problems that the switching between networks is frequent and the utilization of network resources is unreasonable because the mobility of a user in a wireless local area network and a present load condition of a network are not comprehensively considered in a conventional method. The method comprises the following steps: utilizing a honeycomb network to periodically forecast the number of users requesting access in a honeycomb cell and a WLAN (Wireless Local Area Network) cell and an overall distribution status of mobility of the users in the WLAN cell; with an optimal network property as a target, calculating an optimal access decision threshold; and when a new service request is in the WLAN cell, comparing a shift-out probability of the users with a selecting decision threshold of an access network by the honeycomb network and informing the users of selecting a corresponding network for access according to a comparing result. The method is adapted to the change of a network environment, the switching frequency between the honeycomb network and the WLAN network is reduced and a network throughput is increased.

Description

technical field [0001] The invention belongs to the technical field of mobile communication, and relates to a method for selecting an access network based on cognition, which is suitable for a heterogeneous network environment where a cellular network and a wireless local area network (WLAN) are integrated. Background technique [0002] With the rapid development of wireless communication technology, various new wireless access technologies emerge in an endless stream, and the future network will be a complex network integrating multiple wireless access technologies. figure 1 A heterogeneous wireless network convergence scenario represented by a cellular network and a WLAN network is given in . The cellular network has a wide coverage and can provide good mobility support for users. However, limited by precious spectrum resources, the network throughput is small, which cannot effectively meet the high-speed data service needs of users, and the cost of capacity expansion is h...

AI Technical Summary

Problems solved by technology

In the WLAN network priority access network selection method, the WLAN network serves as an effective supplement to the cellular network and shares the load for the cellular network. However, this method does not consider the mobility of users in the WLAN network. After the WLAN network, it will frequently switch to the cellular network, which not only increases the signaling overhead caused by network switching, but also reduces the satisfaction of users who are receiving services; at the same time, the access network selection method does not consider the cellular network and cellular network in real time. In the current load situation of the WLAN network, the WLAN network load is heavy and the cellular network load is light. When there is a new access service request in the WLAN network, the WLAN network access will still be selected according to this method, resulting in unreasonable utilization of network resources. the result of

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