Controlling vehicle telematics unit selection of radio access technology
A technology of telematics and radio access, applied in wireless communication, electrical components, communication supplementary services, etc., can solve the problem that the vehicle telematics unit is difficult to stop using
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[0008] The systems and methods described below control the selection of a radio access technology (RAT) by a vehicle telematics unit in an environment where the wireless carrier system may not support a RAT that provides simultaneous voice and data (SVD). In these environments, the vehicle telematics unit may choose from multiple RATs, some of which provide faster data communication speeds than others. When two or more RATs are considered, a RAT that provides a faster data communication speed relative to the other RAT is considered a state-of-the-art RAT, while a slower RAT may be referred to as an older technology RAT.
[0009] In some areas, wireless carrier systems may support data services via state-of-the-art RATs that typically support SVD simultaneous communication in the same RAT but may not support voice calls in addition to traditionally supporting SVD. For example, a wireless carrier system may only provide data services via a 4G LTE RAT, but may not support a voice...
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