Method for vehicle-mounted communication terminal to achieve dial-up internet access

Abstract

The invention discloses a method for a vehicle-mounted communication terminal to achieve dial-up internet access. The method comprises the steps of dial-up condition judgment, network state judgment, asynchronous dialing, and dial-up time-out monitoring. An asynchronous call mode is adopted for a dial-up mode, so that a dial-up function returns immediately, the state of dial-up connection is monitored through window messages at the same time, and the problems that when the dial-up function is blocked, the function does not return, and the dial-up function has no response are solved. Meanwhile, according to the method, because network state judgment is carried out before dialing, it is guaranteed that dialing is carried out under the circumstance that network services are normal, it is avoided that dialing is carried out under the circumstance that no network exists, and system loads are reduced.

Description

technical field [0001] The invention relates to a networking control strategy applied to a vehicle communication terminal, in particular to a method for dialing on the Internet of a vehicle communication terminal. Background technique [0002] The existing network dial-up control strategy uses a synchronous dial-up method. This dial-up method can only exit when the function (RasDail) is executed. Once a module or driver exception occurs, it may cause the function to execute without exiting, which will cause the entire network management. The system is paralyzed. For the problem of dial-up failure caused by various reasons, the existing dial-up strategy is just repeated attempts, and there is no better strategy to solve it, which may easily cause the dial-up function to be stuck and the module not to respond. For situations such as poor network signal and unsuccessful network registration, the existing dial-up strategy still tries to dial-up continuously, which not only wast...

AI Technical Summary

Problems solved by technology

[0002] The existing network dial-up control strategy uses a synchronous dial-up method. This dial-up method can only exit when the function (RasDail) is executed. Once a module or driver exception occurs, it may cause the function to execute without exiting, which will cause the entire network management. system crash

For the problem of dialing failure caused by various reasons, the existing dialing strategy is just repeated attempts, and there is no better strategy to solve it, which may easily cause the dialing function to be stuck and the module not to respond.

However, for situations such as poor network signal and unsuccessful network registration, the existing dial-up strategy still keeps trying to dial-up, which not only wastes system resources, but also may cause the dial-up function to hang up

After the dial-up is successful, if the device enters the no-service area, the existing module has the function of maintaining the Internet access. At this time, the query network dial-up status is disconnected. The existing dial-up strategy will automatically repeat the dial-up according to the query network dial-up status. cause waste of system resources

[0003] Vehicle-mounted communication terminals are important carriers of vehicle-mounted information services. However, due to the characteristics of large-scale and fast-moving vehicles, and the signal coverage strength of my country's mobile communication public network has regional differences, vehicle-mounted communication terminals must ensure a relatively stable and reliable network. Access, but also to provide users with multimedia entertainment, navigation and other functional services, so the network dialing control of the vehicle communication terminal needs to overcome the above defects

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