摘要:
An authentication method that can be used by a telematics-equipped vehicle to authenticate an SMS message and provide additional security features above and beyond those inherent to the SMS protocol. Generally speaking, a call center uses a mathematical function to derive a security code, and then sends an SMS message to a telematics-equipped vehicle that includes information related to the derived security code. The telematics-equipped vehicle can utilize the transmitted information to authenticate the sender of the SMS message and/or its contents. One group of suitable mathematical functions utilizes keyed-hash message authentication codes (HMACs).
摘要:
A vehicle telematics unit or other electronic hardware in a vehicle authenticates an incoming SMS message and provides additional security features above and beyond those inherent to the SMS protocol. A call center uses a mathematical function to derive a security code, and then sends an SMS message to the vehicle. The telematics unit can utilize the transmitted information to authenticate the sender of the SMS message and/or its contents. One group of suitable mathematical functions utilizes keyed-hash message authentication codes (HMACs).
摘要:
A timing control method for use with wireless communications involving telematics-equipped vehicles. The timing control method generally determines a temporally-distributed sequence of message response times for a group of telematics-equipped vehicles, and then includes these different response times in wireless messages that are sent to the vehicles. In reply, the vehicles use the various message response times to respond in an apportioned or distributed fashion that generally correlates with the temporally-distributed sequence; instead of all at once. In another disclosed method, the response times are determined at each vehicle itself. The methods can be used for requesting data from vehicles via SMS messages.
摘要:
A timing control method for use with wireless communications involving telematics-equipped vehicles. The timing control method generally determines a temporally-distributed sequence of message response times for a group of telematics-equipped vehicles, and then includes these different response times in wireless messages that are sent to the vehicles. In reply, the vehicles use the various message response times to respond in an apportioned or distributed fashion that generally correlates with the temporally-distributed sequence; instead of all at once. In another disclosed method, the response times are determined at each vehicle itself. The methods can be used for requesting data from vehicles via SMS messages.
摘要:
A method and system for configuring a telematics device is constructed so as to use two-way short message service (SMS) to provide improved configuration execution. Mobile identification number (MIN), Mobile Directory Number (MDH), Home System Identification (SID) number, SID/NID pairs, NAI/password for packet data, over the air service provisioning (OTASP) number, and Preferred Roaming List (PRL) flag can be easily updated with no manual or voice channel configuration actions. In addition, other system settings such as button behavior, language, call barring, adding units to hands-free calling, etc. may be updated as well. In an example, a series of binary SMS messages configures the telematics device, with a subset of the messages being used specifically for configuration while the remaining message initiates a packet data session to complete additional configuration.
摘要:
A method and system for configuring a telematics device is constructed so as to use two-way short message service (SMS) to provide improved configuration execution. Mobile identification number (MIN), Mobile Directory Number (MDH), Home System Identification (SID) number, SID/NID pairs, NAI/password for packet data, over the air service provisioning (OTASP) number, and Preferred Roaming List (PRL) flag can be easily updated with no manual or voice channel configuration actions. In addition, other system settings such as button behavior, language, call barring, adding units to hands-free calling, etc. may be updated as well. In an example, a series of binary SMS messages configures the telematics device, with a subset of the messages being used specifically for configuration while the remaining message initiates a packet data session to complete additional configuration.
摘要:
A vehicle telematics unit or other electronic hardware in a vehicle authenticates an incoming SMS message and provides additional security features above and beyond those inherent to the SMS protocol. A call center uses a mathematical function to derive a security code, and then sends an SMS message to the vehicle. The telematics unit can utilize the transmitted information to authenticate the sender of the SMS message and/or its contents. One group of suitable mathematical functions utilizes keyed-hash message authentication codes (HMACs).
摘要:
An authentication method that can be used by a telematics-equipped vehicle to authenticate an SMS message and provide additional security features above and beyond those inherent to the SMS protocol. Generally speaking, a call center uses a mathematical function to derive a security code, and then sends an SMS message to a telematics-equipped vehicle that includes information related to the derived security code. The telematics-equipped vehicle can utilize the transmitted information to authenticate the sender of the SMS message and/or its contents. One group of suitable mathematical functions utilizes keyed-hash message authentication codes (HMACs).
摘要:
A system and method for monitoring and reporting telematics unit communication network system acquisition and scanning performance is disclosed herein. An example of the method includes monitoring a scan of all cellular networks that are available to a vehicle telematics unit, and during the monitoring, recognizing a predetermined trigger. In response to the predetermined trigger, a memory buffer in the telematics unit stores data associated with at least one of performance or outcome of the scan. At least some of the stored data is transmitted from the telematics unit to a server in selective communication with the telematics unit.
摘要:
A method of establishing an alternate communication channel between a telematics unit and a central facility that includes determining that a vehicle telematics unit is unable to communicate data over a voice call using a voice channel; initiating a data call from the vehicle telematics unit to a central facility based on that determination; sending information identifying the vehicle telematics unit to the central facility over the data call; establishing a voice call from the central facility to verbally communicate with the vehicle telematics unit based on the information identifying the vehicle telematics unit; and communicating data between the central facility and vehicle telematics unit via short messaging services (SMS) messages using the voice call from the central facility.