Communication Methods And Devices

原文（中文）

Teachings herein include communication methods for a redundant communication system including two sending ends, two receiving ends, and a data source. An example includes: receiving a first copy of a data packet at the first end and receiving a second copy at the second end from the data source, wherein the first has a high priority label and the second has a low; sending the first copy from the first end to the first receiving end; retaining the second copy at the second end; receiving a confirmation message from the first receiving end at the first sending end and, in response, sending a success message to the second sending end and discarding the second copy; if the first sending end does not receive the confirmation message within a given time period, sending a failure message to the second sending end and, in response, sending the second copy to the second receiving end.