REMOTE TELEMATICS UNIT BAND CONTROL WITH DYNAMIC MEMORY

摘要

A system and method of remotely changing use of a cellular protocol at a vehicle includes: storing, in a network access device (NAD) at the vehicle, identities of one or more cellular bands that provide cellular service according to an up-to-date cellular protocol; wirelessly receiving at the vehicle a computer-readable instruction that deactivates the up-to-date cellular protocol; and in response to the computer-readable instruction, the vehicle: obtains the identities of the cellular bands stored in the NAD; stores the obtained identities in a non-volatile memory device located apart from the NAD; and erases in the NAD the identities of the cellular bands that provide cellular service according to an up-to-date cellular protocol.

主权项

1. A method of remotely changing use of a cellular protocol at a vehicle, comprising the steps of:
(a) storing, in a network access device (NAD) at the vehicle, identities of one or more cellular bands that provide cellular service according to an up-to-date cellular protocol; (b) wirelessly receiving at the vehicle a computer-readable instruction that deactivates the up-to-date cellular protocol; and (c) in response to the computer-readable instruction, the vehicle:
(c1) obtains the identities of the cellular bands stored in the NAD;(c2) stores the obtained identities in a non-volatile memory device located apart from the NAD; and(c3) erases in the NAD the identities of the cellular bands that provide cellular service according to an up-to-date cellular protocol.