| 摘要 |
A method for congestion control in a network node (20) of a communication network utilizing a distributed queue system for transmission of data units and a network node for operation in a communication network utilizing a distributed queue system for transmission of data units are disclosed. The network node has a priority queue (PQ, 40) for protocol data units (PDUs, 50, 50 a-n) in accordance with a retransmission protocol, and further comprises a control unit (60) configured to detect a condition indicative of a congestion; and in response thereto, manipulate a PDU in the PQ. The retransmission protocol is a persistent retransmission protocol, the control unit further is configured to manipulate the content of the PDU in the PQ, and manipulate the content of the PDU comprises to alter one or more bits of a service data unit (SDU) payload of the PDU and to leave a header of the persistent retransmission protocol included in the PDU intact. |
