Vehicle-mounted terminal and an LTE-V-based vehicle-mounted communication method

Abstract

The invention relates to a vehicle-mounted terminal and an LTE-V-based vehicle-mounted communication method. The vehicle-mounted communication method comprises: determining whether a GPS signal is normal; if so, carrying out parsing on the GPS signal to obtain a GPS position signal and a GPS clock signal, generating a synchronous clock signal according to the GPS clock signal and a local clock signal outputted by the clock module so as to calibrate the local clock signal outputted by the clock module; and if not, acquiring a local clock signal from the clock module and acquiring a real-time position signal from an inertial navigation module, and carrying out LTE-V communication based on the local clock signal and real-time position signal. Therefore, when the GPS signal cannot be normallyreceived, the e local clock signal can be obtained from the clock module and the real-time position signal is obtained from the inertial navigation module, so that short-range distributed direct communication based on the PC5 interface can be carries out continuously and thus the continuity and reliability of the communication function of the LTE-V module are guaranteed.

Description

technical field [0001] The present invention relates to the field of intelligent transportation, in particular to a vehicle-mounted terminal and an LTE-V-based vehicle-mounted communication method. Background technique [0002] With the development of automotive technology, LTE-V (Long Term Evolution-Vehicle, long-term evolution-V2X) has become a research hotspot in the automotive communication industry, and it is the core technology of Vehicle to Everything (V2X). LTE-V is a V2X technology with independent intellectual property rights in my country. It is an ITS (Intelligent Transport System, Intelligent Transportation System) system solution based on TD-LTE (Time Division-Long Term Evolution, Time Division Long Term Evolution), and belongs to the LTE follow-up evolution technology. important application branch. The communication mode of the LTE-V system adopts two technical solutions of "wide-area centralized cellular communication (LTE-V-Cell)" and "short-range distribute...

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Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a vehicle-mounted terminal and a vehicle-mounted communication method based on LTE-V for the defect that the LTE-V module cannot maintain continuous communication in the absence of GPS signal coverage in the prior art

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