Method for switching between frequency bands in mixed cell

Abstract

The present invention discloses frequency range switching method in mixing cell. It contains 1, configuring mixing cell own BCCH frequently point to said cell neighbouring areas list; 2, mobile station through system message learning said neighbouring areas list, cycle detecting each BCCH frequently point signal intensity in each BCCH and reporting measuring result; 3, system obtaining said cell BCCH frequency range signal intensity and to make relevant switching processing to mobile station calling according to mobile station calling located frequency range. The present invention can switch when calling being non-BCCH frequency range; capable of rising switching success ratio and accuracy when calling being BCCH frequency range.

Description

technical field [0001] The invention relates to the technical field of wireless communication, in particular to a method for switching between frequency bands in a mixed cell. Background technique [0002] With the large-scale development of GSM, frequency resources have become more and more tense, and have gradually become a bottleneck for the further development of the GSM system. If there is no fast, economical and effective expansion solution, the shortage of mobile communication frequency resources and the shortage of wireless channels will be very prominent contradictions. There are many ways to expand the GSM system, including adding macrocell base stations and reducing station distance; using multiple frequency reuse technology (MRP); expanding microcells; and half-rate applications. But none of these methods can fundamentally solve the problem of insufficient network capacity. [0003] The best existing solution is to introduce new frequency bands. The introductio...

AI Technical Summary

Problems solved by technology

The disadvantage of this method is that: due to the inconsistency of the propagation characteristics of the two frequency bands, as mentioned above, they have different losses under different distances, terrains and environmental conditions; and if the antenna directions of the 900 frequency band and the 1800 frequency band are different, As a result, in different regions, the intensity differences of the two frequency bands are different. Therefore, using a fixed difference to predict the signal strength of the corresponding frequency band obviously cannot solve the problem of different signal strengths in a complex wireless environment.

With this method, it is easy to cause wrong switching, resulting in switching failure or even switching call drop, which obviously affects the voice quality.

Under this technical solution, there are serious defects in the common BCCH cell function, and it cannot even be officially commercialized.

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