A TD-LTE automatic delay adjustment method and device

Abstract

The invention discloses a TD-LTE automatic time delay adjustment method and device. The method comprises the steps that S1, a system regularly works at the F band of TD-LTE; S2, a TD-LTE synchronous detection module detects a synchronizing signal of a TD-LTE frame at the F band, and inputs the synchronizing signal into a time delay detection module; S3, the time delay detection module carries out the zero clearing of an internal time delay difference timer through the inputted synchronizing signal; S4, the system regularly works at the D band; S5, the TD-LTE synchronous detection module detects a synchronizing signal at the D band, and inputs the synchronizing signal into the time delay detection module S6, the time delay detection module controls and reads the time values of the internal time different timer through the inputted synchronizing signal; S7, the steps S3-S6 are repeatedly carried out, and the time delay difference between the F band and an E band is measured; S8, the time delay difference between the band D and the band E is calculated according to the calculated time delay differences between the F band and the D band and between the F band and the E band at step S6 and S7; S9, a synchronizing signal automatic adjustment module calculates three types of TD-LTE synchronizing signals at different bands. The method improves the intelligentization degree of a product and the adaptability of the product.

Description

technical field [0001] The present invention relates to the technical field of wireless communication, and more specifically, relates to a TD-LTE automatic delay adjustment method and device. Background technique [0002] At present, China Mobile's 4G TD-LTE technology mainly uses three frequency bands, namely F-band, D-band and E-band. According to the current actual deployment of China Mobile in the whole country, there are differences in time delay between different frequency bands in different places; for example, in Guangdong, the TD-LTE signal of the F frequency band is 700us ahead of the TD-LTE signal of the D frequency band, while the situation in the Northeast It means that the TD-LTE signals of F-band and D-band are aligned. At the same time, according to the actual use situation, the F frequency band is always ahead of (or equal to) the D frequency band and the E frequency band in terms of time for each frequency band. [0003] Since the TD-LTE signal is a time-...

AI Technical Summary

Problems solved by technology

[0003] Since the TD-LTE signal is a time-division signal, if the synchronization of the space signal is not properly processed, the product will not be usable

Therefore, for applications such as mobile phone signal jammers, if TD-LTE signals in different frequency bands cannot be automatically identified, it will cause inconvenience to the versatility of the product; it may even be directly unusable

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