Method and apparatus for notifying data congestion in a communication system

摘要

A method and apparatus for determining data congestion in a communication path and notifying the data congestion in a communication system. In an apparatus for determining data congestion at a first node connected to a second node, a buffer stores transmission data. A controller compares the size of data stored in the buffer with a predetermined first threshold and a predetermined second threshold greater than the first threshold. If the buffered data size is equal to or greater than the second threshold, the controller determines that data congestion has occurred. A transmitter generates congestion indicating information and transmits it to the second node under the control of the controller. The second node then transmits to the first node a congestion indication message requesting control of the data congestion.