Region switching method based on signal intensity and load estimation

Abstract

The invention discloses a region switching method based on signal intensity and load estimation, mainly solving problem of switch failure caused by excessive load intensity in a candidate cell. The switching method comprises the following steps: (1) a base station sends measuring control information to a mobile terminal periodically, meanwhile measures load information and resource information in the cell; (2) the base station decides whether a switching process is triggered according to the signal intensity in a measuring report of the mobile terminal, if the signal intensity in the cell is smaller than the signal intensity in other cells, connections are established between the base stations to exchange measured information; if not, step (1) goes on; and (3) the base station normalizes by unit and weighs the signal intensity and the load in each candidate target cell, and selects an optimal cell as a target switching cell. The invention has the advantages of high success rate of switching and low total time lag of switching, and mobile nodes can be switched from a service cell to another service cell in wireless network.

Description

technical field [0001] The present invention relates to the technical field of wireless communication, in particular to the long-term evolution system of the third generation mobile communication, in particular to a switching method of load estimation. It is used for the handover of a mobile node moving from one serving cell to another serving cell in a wireless network. Background technique [0002] With the increase of the carrier frequency of the future mobile communication system, the continuous increase of the number of mobile users and the changes in the requirements of new telecommunication services, the coverage of the wireless cell will be further reduced, and the handover will become correspondingly more frequent than before. , macro cells, micro cells, pico cells, and different cells of different systems will overlap and cover a physical area, and their respective load conditions, resources and service rates may be different, especially in the case of network conv...

AI Technical Summary

Problems solved by technology

However, with the increasing number of business types and the continuous growth of user needs, in some cases, when the handover decision only considers the signal strength, it will lead to a potential handover failure. For example, the signal strength of the selected target cell is the best. However, the load has been overloaded or the load may be overloaded

In this way, it will be blocked by the target cell at the time of admission, resulting in handover failure, which will bring greater handover delay to users and even cause call drop

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