Voice call method, device and system

Abstract

The embodiment of the invention provides a voice call method, device and system which can be applied to a system involving a vehicle. The method comprises the steps that the terminal equipment determines the number of first radio bearer RB resources used by a data service; if the first RB resource number is greater than or equal to the second RB resource number, the terminal equipment disconnectsone path of data service in the data service, and the terminal equipment initiates a voice call on the RB resource corresponding to the disconnected path of data service; or, if the number of the first RB resources is smaller than the number of the second RB resources, the terminal device initiates a voice call on the RB resources which are not used by the data service. The second RB resource number is the number of RB resources distributed to the terminal equipment by a network operator. Based on the scheme, possible RB resource conflicts can be prejudged, RB resources used by one path of data service can be released in advance, it can be ensured that available RB resources exist when the voice call is initiated, and the success rate of the voice call is increased.

Description

Technical field [0001] This application relates to the field of communications, and in particular to methods, devices and systems for voice calls. Background technique [0002] The most important functional feature of the existing vehicle-mounted terminal is usually a voice call service function, such as an automatic alarm call for a car accident, a road rescue call for a vehicle failure, etc.; and the most commonly used functional feature of the existing vehicle-mounted terminal is usually a data service function. Among them, there are many types of data services, such as content service provider (telematics service provider, TSP) services, in-vehicle wireless fidelity (Wi-Fi) services, firmware over the air (FOTA) services, etc. . For different types of data services, vehicle-mounted terminals need to set different access point names (APN). Generally, each APN occupies one data channel, that is, one type of data service occupies one data channel. The channel can be understood...

AI Technical Summary

Problems solved by technology

In the case of concurrent CS voice services and multiple PS data services, although the vehicle terminal can support four PS data services and one CS voice service concurrently, due to the limited RB resources allocated by the operator's network, the vehicle terminal is ultimately used for multiple The sum of RB resources for data services and RB resources for voice services is always limited within the range of RB resources allocated by the operator network

[0004] However, in the case of concurrent CS voice services and multiple PS data services, there may be a scenario where all the RB resources allocated by the operator for the vehicle terminal are used for multiple PS data services. In this scenario, if the network operator allocates All RB resources are occupied by data services, which will cause CS voice call initiation failure, thereby reducing the success rate of CS voice calls

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