SYSTEM AND METHOD OF CONTROLLING NETWORK TRAFFIC FOR A NETWORK WITH IN A DEVICE

• US 20200136859A1
• Filed: 10/25/2018
• Published: 04/30/2020
• Est. Priority Date: 10/25/2018
• Status: Active Grant

• Current Assignee: GM Global Technology Operations LLC (General Motors Company)
• Original Assignee: GM Global Technology Operations LLC (General Motors Company)
• Inventors: Park, Taeju, Samii, Soheil, Joshi, Prachi
• Granted Patent: US 10,623,202 B1
• Time in Patent Office: Days
• CPC Class Codes: B60W 2050/0044 In digital systems
• CPC Class Codes: B60W 2540/00 Input parameters relating to occupants
• CPC Class Codes: B60W 2900/00 Indexing codes relating to the purpose of, or problem solved of road vehicle drive control systems not otherwise provided for in groups B60W30/00
• CPC Class Codes: B60W 50/0098 Details of control systems ensuring comfort, safety or stability not otherwise provided for
• CPC Class Codes: H04L 12/40143 involving priority mechanisms hybrid switching fabrics H04L12/6402; intermediate storage or scheduling H04L49/90; time-division multiplex systems H04J3/00
• CPC Class Codes: H04L 2012/40215 Controller Area Network CAN
• CPC Class Codes: H04L 2012/40273 the transportation system being a vehicle

Abstract

A system and method of controlling network traffic for a network in a device that has a plurality of units, including one or more provider and recipient units. The recipient units are configured to send respective subscription requests for data originating from the provider units. A controller is programmed to enter an initial phase when at least one initial condition is met. A repeat phase is entered when a list of currently active subscription is received. In the repeat phase, the controller is configured to monitor the network for a respective timing checking request sent by the provider units. When the controller receives a timing checking request, the controller stores the request in the queue module as respective queue member. The controller is configured to perform a timing analysis test on a selected member of the queue module and control the device based partly on the timing analysis test.

Claims

1. A system of controlling network traffic for a network in a device, the system comprising:

a plurality of units in the device, the plurality of units including one or more provider units and one or more recipient units;

wherein the one or more recipient units are configured to send respective subscription requests for data originating in the one or more provider units, via the network, the respective subscription requests being identified by at least four factors, including a service identifier, a data recipient, a service criticality and a number of instances required for transmission integrity;

a queue module configured to store the respective subscription requests;

a controller in communication with the plurality of units and the queue module;

wherein the controller includes a processor and tangible, non-transitory memory on which instructions are recorded, execution of the instructions by the processor causing the controller to;

enter an initial phase when at least one initial condition is met;

in the initial phase, broadcast a request message to the plurality of units for a list of currently active subscriptions, via the network;

enter a repeat phase when the list of currently active subscriptions is received;

in the repeat phase, monitor the network for a respective timing checking request sent by the one or more provider units, the respective timing checking request being identified by the service identifier, the data recipient, the service criticality and the number of instances;

store the respective timing checking request in the queue module as respective queue members;

perform a timing analysis test on a selected member of the respective queue members; and

control the device based in part on the timing analysis test, including adding the selected member to the list of currently active subscriptions if the timing analysis test is passed and re-entering the repeat phase.

2. The system of claim 1 wherein the queue module is embedded in the controller.

3. The system of claim 1, wherein the predefined time window is between 1 and 10 milliseconds, inclusive.

4. The system of claim 1, wherein:

the one or more provider units are configured to send respective subscription offers to the one or more recipient units for the data originating in the one or more provider units, via the network; and

in the repeat phase, the controller is configured to monitor the network for the respective subscription offers for the predefined time window and store the respective subscription offers in the queue module as the respective queue members.

5. The system of claim 4, wherein:

the respective subscription offers are identified by the service identifier, the data recipient, the service criticality and the number of instances.

6. The system of claim 4, wherein controlling the device includes:

if the timing analysis test is not passed, rejecting the selected member and re-entering the repeat phase, via the controller.

7. The system of claim 6, wherein, prior to performing the timing analysis test, the controller is configured to:

determine a quantity of the respective queue members in the queue module; and

if the quantity is two or more, then chose the selected member based on a highest magnitude of the service criticality.

8. The system of claim 7, wherein the controller is configured to:

if the service criticality of the respective queue members with the highest magnitude are equal, assign a secondary priority to the respective queue members; and

choose the respective queue members with a greatest magnitude of the respective secondary priority number as the selected member.

9. The system of claim 1, wherein:

the device includes at least one rear wheel;

the one or more provider units include a friction sensor and the one or more recipient units include at least one rear toe controller configured to control the at least rear wheel; and

the controller includes a selectively engageable module configured to adjust a toe angle for the at least one rear wheel based on a surface friction.

10. The system of claim 1, wherein:

the one or more provider units include a vision-based imaging sensor and the one or more recipient units include a brake controller; and

the controller includes a selectively engageable module configured to detect an object in a vicinity of the device and selectively engage the brake controller.

11. The system of claim 1, wherein:

the device includes at least one window;

the one or more provider units includes a temperature sensor and the one or more recipient units include at least one window controller configured to control a magnitude of opening the at least one window; and

the controller includes a selectively engageable module configured to open the at least one window when a temperature in an interior of the device exceeds a threshold.

12. A method of controlling network traffic for a network in a device having a plurality of units and a controller, the controller having a processor and tangible, non-transitory memory on which instructions are recorded, the plurality of units including one or more provider units and one or more recipient units, the method comprising:

configuring the one or more recipient units to send respective subscription requests for data originating from the one or more provider units, via the network;

identifying the respective subscription requests by at least four factors, including a service identifier, a data recipient, a service criticality and a number of instances required for transmission integrity, via the controller;

configuring a queue module to store the respective subscription requests;

configuring the controller to be in communication with the plurality of units and the queue module, via the network;

entering an initial phase when at least one initial condition is met, via the controller;

in the initial phase, broadcasting a request message to the plurality of units for a list of currently active subscriptions, via the network;

entering a repeat phase when the list of currently active subscriptions is received;

in the repeat phase, monitoring the network for a respective timing checking request sent by the one or more provider units, the respective timing checking request being identified by the service identifier, the data recipient, the service criticality and the number of instances;

storing the respective timing checking request in the queue module as respective queue members;

performing a timing analysis test on a selected member of the respective queue members; and

controlling the device based in part on the timing analysis test, including adding the selected member to the list of currently active subscriptions if the timing analysis test is passed and re-entering the repeat phase.

13. The method of claim 12, further comprising:

prior to performing the timing analysis test, determining a quantity of the respective queue members, via the controller; and

if the quantity is two or more, then choosing one of the respective queue members as the selected member based on a highest magnitude of the service criticality, via the controller.

14. The method of claim 13, further comprising:

if the service criticality of the respective queue members with the highest magnitude are equal, assigning a secondary priority to the respective queue members; and

choosing the respective queue members with a greatest magnitude of the respective secondary priority number as the selected member, via the controller.

15. The method of claim 12, further comprising:

configuring the one or more provider units to send respective subscription offers to the one or more recipient units for the data originating in the one or more provider units, via the network; and

in the repeat phase, monitoring the network for the respective subscription offers for the predefined time window and storing the respective subscription offers in the queue module as the respective queue members, via the controller.

16. The method of claim 15, further comprising:

identifying the respective subscription offers by the service identifier, the data recipient, the service criticality and the number of instances.

17. The method of claim 15, wherein controlling the device includes:

if the timing analysis test is not passed, rejecting the selected member and re-entering the repeat phase, via the controller.