Patent ID: 8370725
Filing Date: 2013-02-05
Classification: H04L

Abstract:
1. An apparatus, comprising: a receiver unit configured to receive frames of data from a transmitter unit of a different apparatus via a first communication path; an error detection unit configured to detect data errors in the frames of data received via the first communication path; an acknowledgment unit configured to maintain an acknowledgement indicator indicative of whether frames received by the apparatus via the first communication path are error free, wherein, in response to the error detection unit detecting a data error in a received frame, the acknowledgement unit is configured to indicate an error condition on the first communication path by freezing a value of the acknowledgement indicator; wherein the apparatus is configured to successively convey values of the acknowledgement indicator to the different apparatus via a second communication path while the apparatus is receiving frames via the first communication path, including at least one value that indicates that at least one error-free frame has been received from the apparatus.