This invention relates, generally, to telematics systems and devices and, more particularly, to automatically and wirelessly provisioning wireless service for a telematics control unit, and for automatically and wirelessly registering various modules in a vehicle and associating them with the vehicle's VIN in a central database.
Telematics refers to the integrated use of telecommunications devices and systems and information storage, usage, transmitting, receiving, and processing. More simply, telematics refers to sending, receiving and storing, information via telecommunication devices. In addition, telematics devices and system have been applied alongside Global Positioning System (“GPS”) technology integrated with computers and mobile communications technology in automotive information and navigation systems.
Other than the convergence of telecommunications and information processing, the term telematics may also refer to automation of various processes relating to the driving and using of automobiles. For example, a telematics system can report emergency situations to a telematics services provider's central location via a voice telephony call over a wireless communications network, or a message sent electronically over a network, including a wireless communications network and the Internet. Telematics also includes services such as GPS navigation, integrated hands-free cellular telephony, wireless safety communications, and automatic driving assistance and information systems, such as traffic, restaurant, fuel, and emissions information. IEEE standard 802.11p refers to Wireless Access for the Vehicular Environment to facilitate and enhance Intelligent Transportation.
A telematics services provider (“TSP”) typically operates a call center with live operators to respond to emergency calls and to contact the appropriate responders to the emergency. The TSP also typically has a telecommunications operations center (“TOC”), which typically includes a computer server and other networking equipment to connect the server with various networks, such as the internet. A telematics control unit (“TCU”) installed in a vehicle, either at the time of manufacture, or after the vehicle was placed in service, typically contains a GPS portion, a cellular telephony portion, and general computer electronics such as a memory, a general processor, I/O interface, etc., which are coupled to the GPS and to the cellular, or wireless, telephony portion.
A subscriber typically pays a monthly services charge to a TSP. The TSP establishes and maintains a wireless services subscription with a wireless carrier, such as a cellular telephony services provider, so that the I′CU can communicate with the TOC via wireless and internet. This connection also facilitates internet availability and functionality for a subscriber at the TCU. In addition, internet connectivity facilitates a subscriber transmitting and receiving information between his car and a personal computer, or other computer device connected to the internet.
A TSP typically establishes an account with a wireless carrier (can also be referred to as activating or provisioning an account) so that a TCU can communicate across the wireless carrier's wireless (typically cellular) network. After a TCU has been installed in a vehicle, the vehicle's manufacturer, or the retail dealer selling the vehicle, typically obtains a unique identifier of the TCU and unique identifier information corresponding to the wireless telephony portion of the TCU. The unique identifier of the wireless telephony portion typically includes an International Mobile Subscriber Identity (“IMSI”) for mobile units using GSM technology, or a Mobile Subscriber Identifier (“MSID”) for mobile units that use CDMA technology. The TSP may manually obtain the mobile unit's unique identifier and manually forward it to a wireless carrier via a voice telephone call, or writing on a paper form and mailing, or sending via facsimile to the wireless carrier. The wireless carrier begins billing the TSP for wireless service for the TSP.
A TSP typically does not keep track of the location of a given TCU and thus does not know when it has been, or will be, installed in a vehicle. Thus, the TSP typically establishes, or provisions, service for a given TCU soon after receiving notice from the TCU manufacturer that the TCU has been made. However, a wireless carrier begins billing a TSP for wireless service for a given TCU after that TCU has been provisioned, even if the TCU has not been installed in a vehicle. In addition, a given TCU may have been swapped out from a given vehicle for another ICU after the vehicle has been manufactured. The removed I′CU could either sit idle on a shelf, or more likely, be installed in another vehicle owned by someone not paying for a subscription to the TSP services. Also, the various modules in a vehicle may be changed during, or after, manufacture of a vehicle, and manual record keeping procedures typically used do not adequately track the location of a given module.
Thus, the art needs a method and system for automatically provisioning wireless service for a TCU after its corresponding vehicle has been manufactured. Furthermore, the art needs a method and system for deactivating wireless service for a TCU after it has been removed from a vehicle, or otherwise loses association with a subscriber paying for telematics services.
In addition, the art needs a method and system for automatically registering, and centrally maintaining a list of, various modules in a vehicle so that a vehicle manufacturer can glean failure trend data and can investigate inefficient warranty procedures.
A method for automatically configuring a telematics control unit for use in a vehicle comprises receiving a unique identifier of the telematics control unit and subscriber identity information that corresponds to the telematics control unit. Typically, a TSP's TOC service receives the unique identifier and the subscriber identity information. The TOC associates the unique identifier of the telematics control unit and the subscriber identity information corresponding to the TCU with a unique identifier of the vehicle. Typically, the unique identifier is a vehicle's vehicle identification number (“VIN”). The method may further comprise receiving equipment information corresponding to a set of vehicle equipment associated with the telematics control unit, and associating the received equipment information with the unique identifier of the vehicle. The vehicle equipment associated with TCU may include various system control modules onboard a vehicle. The vehicle equipment may also include the TCU.
To automatically register equipment modules and update an equipment information table with equipment information of a vehicle, the TCU may seek a wireless signal, for example a GPS signal. If the TCU can tune a GPS signal, it has probably been installed in an assembled vehicle which has left its manufacturing facility (otherwise, the vehicle assembly plant building would probably block, or severely attenuate, GPS signals transmitted from satellites orbiting the earth. After the TCU has detected a GPS signal, the TCU acquires equipment information from equipment devices, for example various system control modules, installed in the vehicle. A TCU also perform this step of acquiring equipment information multiple times during the days, months, and years, after the vehicle it has been installed it has first detected a GPS signal (thus indicating that the vehicle has left its assemble plant). Typically, the TCU re-acquires equipment information from the vehicle after each predetermined number of vehicle crank-ups occur.
After the TCU acquires equipment information whether at first crank-up after leaving a vehicle's assembly plant, or at subsequent crank-ups, the TCU updates the equipment information table with equipment information corresponding to one, or more, equipment devices installed in the vehicle, and wirelessly transmits the equipment information in the table to a central server of a telematics services provider.
A TCU typically comprises a processor circuit coupled to a plurality of vehicle equipment modules. A memory is coupled to the processor. A portion of the memory is configured to store a table of equipment information corresponding to the plurality of vehicle equipment modules. A first wireless circuit coupled to the processor is configured for wirelessly receiving location information corresponding to a present location of the telematics control module. A second wireless circuit is coupled to the processor, which is configured to generate an equipment information message containing the equipment information associated with the VIN of the vehicle. The processor is configured to cause the second wireless circuit to wirelessly transmit the equipment information message to a central server of a telematics services provider.
As a preliminary matter, it will be readily understood by those persons skilled in the art that the present invention is susceptible of broad utility and application. Many methods, embodiments and adaptations of the present invention other than those herein described, as well as many variations, modifications, and equivalent arrangements, will be apparent from or reasonably suggested by the present invention and the following description thereof, without departing from the substance or scope of the present invention.
Accordingly, while the present invention has been described herein in detail in relation to preferred embodiments, it is to be understood that this disclosure is only illustrative and exemplary of the present invention and is made merely for the purposes of providing a full and enabling disclosure of the invention. The following disclosure is not intended nor is to be construed to limit the present invention or otherwise to exclude any such other embodiments, adaptations, is variations, modifications and equivalent arrangements, the present invention being limited only by the claims appended hereto and the equivalents thereof.
Turning now to the figures,
A telematics services provider can predetermine provisioning offset period 12, so that after the provisioning offset period elapses following manufacture of a TCU, the telematics services provider's centrally located server automatically establishes an account for the TCU with a wireless services carrier, such as a cellular telephony carrier (e.g., Verizon, Inc. or AT&T, Inc.). When the telematics services provider establishes the account with the wireless carrier, the telematics services provider arranges for predetermined features and bandwidth capacity so that that use of the telematics system conforms to terms previously agreed to by the wireless carrier for subscribers of the telematics services.
For example, a TCU typically comprises a cellular telephone circuit and a global positioning satellite (“GPS”) circuit. Upon crank-up, the TCU seeks a signal compatible with its circuitry. The TCU also seeks a wireless system identifier, sometimes referred to as a SID when used in a CDMA (CDMA-2000) network, or a Mobile Country Code+Mobile Network Code (i.e., MCC+MNC) if used in a Global System for Mobile communications (“GSM”) system device. If a manufacturer makes a TCU for operation according to code division multiple access (“CDMA”), the TCU would not recognize a signal and ID from a GSM transmitter, and vice versa if the TCU was made for use in a GSM network. If the TCU does not detect a compatible SID, MCC, or MCC+MNC combination, then it will not attempt to transmit registration information to the TOC and will return to a deep sleep mode waiting for the next ignition cycle, or vehicle crank-up. However, if the TCU does detect a compatible cellular wireless signal, it will send device and subscriber identity information to the TOC as discussed in more detail below.
Also, following the predetermined provisioning offset period 12 and detection of a GPS signal, TCU 4 may collect information from various control modules installed on vehicle 10. For example, vehicle 10 may include multiple electronic modules such as, for example, an engine control module (“ECM”), a powertrain control module (“PCM”), a transmission control module (“TCM”), a climate control module, a power door locks module, a audio system module, etc. Since each module typically includes similar basic computer circuitry, such as a processor, a memory device, and input and output ports, each module may be generically referred to as an electronic control unit (“ECU”). Each ECU typically has a module name, or type; a unique identifier, or serial number; and current software version. TCU 4 collects this information related to each of the modules onboard vehicle 10 and populates a table 18 with the collected module information. Table 18 associates the vehicle identification number of corresponding to vehicle 10 with the all of the modules identified as MOD 1-MOD n in module name field 20. Identifier and software version fields 22 and 24, respectively, contain the unique identifiers and current software versions of each of modules MOD 1-MOD n. After TCU 4 has built table 18, it formats the table into a message 26 and transmits it across communication network 16 using a wireless link with a wireless provider 30 that generated the signal and the acceptable MCC+MNC or SID that the TCU sensed as being present after it woke up. The TCU transmits the signal to a server 28 operated by telematics services provider 32. One skilled in the art will appreciate that server 28 may be connected to network 16 via a wired, or wireless, link. The ‘cloud’ symbol used in the figure to represent network 16 can represent a wired network such as the internet, and a wireless network such as, for example, a wireless CDMA or GSM cellular network, a GPS network, a Wi-Fi network, and networks using other communication protocols known to those skilled in the art.
Tuning now to
An International Mobile Subscriber Identity (“IMSI”) 40, also a unique number, is associated with, and corresponds to, a particular user's account. In addition, a subscriber identity module (“SIM”) 42 typically contains one, or more, secret keys 44. A TCU manufacturer typically permanently fixes a SIM into a TCU, and the TCU sends SIM information 42 to a telematics services provider via an “electronic data interchange” EDI link. The OEM associates the device identifier, either the serial number 36, the IMEI (or MEID) 38, or both, with the corresponding vehicle's VIN and sends the device identifier and associated VIN to the telematics services provider. Preferably, the TCU transmits VIN, and corresponding TCU device information and SIM information to the telematics services provider automatically when the vehicle is cranked. However, the TCU does not perform a first-time-after-assembly transmission of vehicle equipment information until the TCU detects the presence of a GPS signal. This prevents the TCU from attempting to transmit information while still inside an OEM's factory.
If the TCU has never detected a GPS signal, and cannot detect one, the vehicle is probably still inside a factory building that blocks GPS signals. An OEM may make changes to an ostensibly complete vehicle before it leaves a factory building. Waiting until the TCU detects a GPS signal reduces the likelihood that the TCU will use wireless air-time minutes (which a telematics services provider pays for) to transmit a vehicle's equipment information that may change after the vehicle leaves a factory. When the telematics services provider receives the SIM information 42 and the vehicle TCU identifier information associated with a vehicle's VIN, it creates a new record in a telematics operation center server (such as server 28 shown in
Turning now to
At step 315, the TCU manufacturer provides information to a telematics services provider regarding identifiers of the TCU. For example, the manufacturer may provide the serial number of the device and the associated identifier of the SIM to a telematics services provider's TOC server. The TCU manufacturer may perform step 315 manually, by personnel uploading information from its manufacturing plant to the TOC. Alternatively, the TCU may perform step 315 automatically, while powered up for testing, for example, while still at the plant where the TCU was made. After manufacturing, the manufacturer may set a provisioning timer at step 320. The TCU manufacturer sets the provisioning timer to a predetermined time based on periods for estimated shipment to, and shelf life at, a vehicle manufacturer, for example. After step 325 determines that the timer has counted down, the TOC provisions the TCU by establishing a wireless services account for the TCU based on information uploaded to the TOC at step 315. For example, the wireless provider configures its network equipment to recognize requests for services from the TCU and to provide services in response thereto according to a predetermined rate plan established between the wireless carrier and the telematics services provider. The wireless services carrier establishes the wireless services account for the TCU based on the SIM, and information contained in the TCU. Thus, information in the TCU and SIM, namely a device's identifier and subscriber identify information, such as contained on a SIM in a id GSM device, is associated and linked together at the TOC. Method 300 ends at step 335.
Turning now to
Turning now to
At step 515 the TCU's general processor instructs the GPS circuitry to seek a GPS signal. At step 520, the general processor determines whether the GPS circuitry detected a GPS signal. If a signal has not been detected, the vehicle has likely not left the OEM factory building, which would most likely block GPS signals from reaching the TCU GPS antenna in the vehicle. Thus, if the TCU general processor determines that the GPS circuit did not detect a GPS signal at step 520, method 500 follows the ‘N’ branch from step 520 and waits a predetermined amount of time at step 555. The predetermined wait time of step 555 may be selected to correspond to the assembly time of a single vehicle at the OEM's factory. Even if the vehicle is placed out of Run mode, the processor can operate the wait timer in a low power state. In addition, any desirable time other than vehicle assembly time may be selected for the time for method 500 to wait at step 555. After waiting the predetermined period at step 555, method 500 returns to step 515.
If the TCU general processor determines that a GPS signal was present at step 520, method 500 advances to step 525 and the TCU general processor determines whether an equipment information table portion in the TCU's memory is empty. If the determination at step 525 is yes, method 500 follows the ‘Y’ branch to step 530. Two conditions were met to arrive at step 530—a GPS signal was detected and the vehicle, with the current TCU, was ‘cranked-up’ for the first time in the presence of a GPS signal (if the vehicle had been cranked-up before with the current TCU was installed, the VIN register would not have been null at step 510). The vehicle could have been cranked up in the factory building that shielded the vehicle's TCU from GPS signals. Furthermore, if the vehicle had been cranked in the presence of a GPS signal with the current TCU was installed, the equipment information table would not have been empty and method 500 would have advanced from step 525 to step 570, as will be discussed further below.
Continuing with the description at step 530, the TCU processor requests equipment information from various electronic device modules, or ECUs, used in the vehicle in which it has been installed. Modules used in a vehicle may include an engine control module (“ECM”), a powertrain control module (“PCM”), a transmission control module (“TCM”), and other various modules typically used in modern vehicles, such as airbag modules, seat belt modules, power window and door modules, audio and video system modules, climate control modules, etc. Each module in a vehicle typically has a module name, module unique identifier, and a software version corresponding to the current version of software, or firmware, it is loaded with.
At step 530, while the vehicle is running, or at least in a Run mode, the various modules respond to the TCU's request for information by providing the information associated with them and stored on their individual memories via a bus, or communication means, such as a controller area network (“CAN”) bus, wireless link, or wired link. The TCU receives the response messages from the various modules and stores the information in an equipment information table in the TCU's memory. The TCU also requests, and receives, the VIN from at least one of the modules, and automatically associates the equipment information received from the modules with the vehicle's VIN number in the equipment information table. The VIN may become part of a record in the TCU memory that stores the equipment information. Or, the name of a file that contains the equipment information may be named with the VIN as part of the file name, or other table identifier.
From the equipment information table record, or file, the TCU creates an electronic equipment information message suitable for transmission over a cellular network, or other similar wireless system, or link. At step 535, the TCU determines whether it has been provisioned as described in reference to
Returning to the description of method 500 at step 525, if the TCU processor determined that the equipment information table was not empty, the TCU waits a predetermined amount of time, or a predetermined number of crank-up cycles of the vehicle at step 570. After waiting at step 570, the TCU processor queries the vehicle CAN bus (or other system for communicating with the various ECU modules on the car) at step 585 to determine if new, or different, modules, or software, have been installed since the TCU last performed step 530, or step 575, as described in more detail below. The various modules in the vehicle respond to the query with equipment information as described above with respect to step 530, namely, module name, or other type identifier; module serial number, or other unique identifier; and module software version. The TCU processor stores the result of the query to the TCU memory and then compares the query results to equipment information stored in the equipment information table. If the results of the comparison indicate that new, or different, modules, or new software, have been installed in the vehicle, method 500 follows the ‘Y’ path and at step 575 the TCU updates its equipment information table record with information regarding new equipment, different equipment, or new or different software, that has been installed since the last time the TCU performed step 530, or step 575. From step 575, method 500 advances to step 535 and continues as described above. If the TCU determines at step 585 that the vehicle does not contain new modules, different modules, or new or different software, method 500 ends at step 550.
Returning to step 560, if a VIN mismatch exists, method 500 follows the ‘Y’ branch and advances to step 530. At step 530, the TCU populates, or updates, the is VIN register of the TCU memory and also populates, or updates, the equipment information table with the module names/types, corresponding unique identifiers, and corresponding software versions of the ECU modules used throughout the vehicle.
Steps 575 and 530 differ in that at step 575 the TCU detects differences in information it has stored in the equipment information table from information the CAN bus reports, and the TCU accordingly only updates information that differs. In contrast, at step 530 the TCU updates information for all modules and software installed in the vehicle and also updates the vehicle VIN in the table. This provides for an orderly operation of the TCU and efficient use of wireless bandwidth by waiting at step 570 and then partially updating at steps 575 and 540. For example, if a repair facility has to change out multiple modules before it corrects a problem, wireless bandwidth should not be used to upload an entire equipment information table after every module replacement and vehicle crank-up.
These and many other objects and advantages will be readily apparent to one skilled in the art from the foregoing specification when read in conjunction with the appended drawings. It is to be understood that the embodiments herein illustrated are examples only, and that the scope of the invention is to be defined solely by the claims when accorded a full range of equivalents.
This application claims priority under 35 U.S.C. 119(e) to U.S. provisional patent application No. 61/054,053 entitled “Telematics control unit activation,” which was filed May 16, 2008, and to U.S. provisional patent application No. 61/054,084 entitled “Telematics System,” which was filed May 16, 2008, both of which are incorporated herein by reference in their entireties.
Number | Date | Country | |
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61054053 | May 2008 | US | |
61054084 | May 2008 | US |