Network apparatus for designing collision avoidance and method for controlling the same

1. A network apparatus for designing collision avoidance, comprising:

a plurality of controllers; and

a main controller configured to generate a plurality of transmission schedule tables based on transmission data for the plurality of controllers, perform real-time monitoring for a communication load, and select and change one of the plurality of the transmission schedule tables according to the monitored communication load for collision avoidance;

wherein each of the transmission schedule tables is configured to have different offsets in consideration of a period and a size of the transmission data; and

the main controller designates the different offsets to each of the transmission data of the plurality of controllers; and

wherein the plurality of transmission schedule tables are generated based on the transmission data for each of the plurality of controllers, and the plurality of transmission schedule tables are loaded after being generated, and wherein the schedules of the plurality of transmission schedule tables are adjusted to secure overall transmission times.

2. The network apparatus of claim 1 , wherein the different offsets are sequentially designated from a low period of the transmission data.

3. The network apparatus of claim 1 , wherein the different offsets are set so as to not exceed the period.

4. The network apparatus of claim 1 , wherein the different offsets are designated to be remote from an already scheduled adjacent frame.

5. The network apparatus of claim 1 , wherein a start offset of the different offsets are designated for each of the plurality of controllers.

6. The network apparatus of claim 1 , wherein the transmission schedule table includes transmission interval information indicating a transmission interval, schedule order information indicating an order according to the transmission interval, and scheduling information indicating offset allocation according to the order.

7. The network apparatus of claim 1 , wherein a selection criterion for the selection and change is an intermediate value not exceeding a predetermined margin in an order of empty schedules.

8. The network apparatus of claim 1 , wherein the selection and change is performed according to a load measured through the real-time monitoring, a reference value of a bus load allowing transmission of predetermined normal data to be secured, and whether an allowable value of sensitivity capable of ensuring a predetermined transmission time is compared.

9. A method for controlling a network apparatus for designing collision avoidance, the method comprising:

a transmission schedule table generating operation of generating, by a main controller, a plurality of transmission schedule tables based on transmission data for a plurality of controllers;

a monitoring performing operation of performing, by the main controller, real-time monitoring for a communication load; and

a selection and change operation of selecting and changing, by the main controller, one of the plurality of transmission schedule tables for collision avoidance according to the monitored communication load based on a result of the real-time monitoring;

wherein each of the transmission schedule tables is configured to have different offsets in consideration of a period and a size of the transmission data; and

the main controller designates the different offsets to each of the transmission data of the plurality of controllers; and

wherein the plurality of transmission schedule tables are generated based on the transmission data for each of the plurality of controllers, and the plurality of transmission schedule tables are loaded after being generated, and wherein the schedules of the plurality of transmission schedule tables are adjusted to secure overall transmission times.

10. The method of claim 9 , wherein the different offsets are sequentially designated from a low period of the transmission data.

11. The method of claim 9 , wherein the different offsets are set so as to not exceed the period.

12. The method of claim 9 , wherein the different offsets are designated to be remote from an already scheduled adjacent frame.

13. The method of claim 9 , wherein a start offset of the different offsets are designated for each of the plurality of controllers.

14. The method of claim 9 , wherein the transmission schedule table includes transmission interval information indicating a transmission interval, schedule order information indicating an order according to the transmission interval, and scheduling information indicating offset allocation according to the order.

15. The method of claim 9 , wherein a selection criterion for the selection and change is an intermediate value not exceeding a predetermined margin in an order of empty schedules.