Double-antenna handover system in GSM-R (global system for mobile communication for railway) network and method thereof

Abstract

The invention discloses a double-antenna handover system in the GSM-R (global system for mobile communication for railway) network and a method thereof. The double-antenna handover system comprises a head antenna provided with user identification codes, a tail antenna provided with user identification codes and a controller used for controlling received signals and transmitted signals of the head antenna and the tail antenna and handover of functions. By channel adjusting and coordinate of the head antenna and the tail antenna, seamless handover in the GSM-R network is realized, communication quality in the high-speed environment is greatly improved, and for a single-antenna handover process, time for transmitting measuring reports is shortened, and transmission efficiency is high.

Description

technical field [0001] The present invention relates to the field of communication technology, in particular to a dual-antenna handover system and method in a GSM-R network. Background technique [0002] Because high-speed railways are related to people's lives and property safety, with the rapid development of high-speed railways and the popularization and application of high-speed railway mobile communication systems, research on the safety of high-speed railway systems is a key topic in the field of high-speed railway research. As the wireless communication system GSM-R in the entire high-speed railway information system, due to the uncertainty of its wireless transmission, the security performance of the GSM-R system has aroused the interest of many researchers. [0003] Handover in the GSM-R system refers to the process of transferring from a current call or data transmission channel to a new channel. In a high-speed railway system, handover is a key technology in GSM-...

AI Technical Summary

Problems solved by technology

However, the preconditions of this algorithm are very strict, such as the train must be equipped with a GPS system, a large number of measurements and statistics of the location where the train is switched, and regular updates are required

In addition, there are many works in the prior art to improve the performance of handover in the GSM-R system based on methods such as target cell designation method and expert system or fuzzy system.

[0005] However, the existing research work on handover in the GMS-R network has taken into account the particularity of the GSM-R network, such as the uniqueness of the running direction, the fixedness of the running track, the high speed of running, and the particularity of network coverage, etc. , the implementation is hard handover, that is, there is a problem of handover interruption

With the continuous improvement of the speed of high-speed railways, the requirements for the communication system are more stringent, and during the communication interruption time caused by the handover, the distance of the train running is getting longer and longer. Therefore, the communication interruption problem in the handover process is An important safety hazard in high-speed railway

The prior art only improves the performance of handover by making full use of the GSM-R operating environment such as the uniqueness of the operating direction, the fixity of the operating track, the high speed of operation, and the particularity of network coverage, and does not make use of it as The characteristics of the train itself of the mobile communication node, such as the length of the train is much larger than that of ordinary communication nodes

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