| 摘要 |
An algorithm complementary to the Selective Repeat ARQ technique is provided, that allows obsolete or otherwise superfluous packets to be safely discarded at the transmitter when using the Selective Repeat ARQ technique. Thus, clogging of ARQ buffers and deadlocking of the system can be avoided, and data transfer in mobile wireless environments using Selective Repeat ARQ can be made more efficient. In accordance with various embodiments of the algorithm, a data packet discard notification (DPDN) message is sent by the transmitter to the receiver to indicate to the receiver which packets the transmitter has discarded, so that the receiver need no longer expect to receive them. The DPDN message can be sent when the transmitter discards packets. The DPDN message can also be sent in response to a communication such as a request or negative acknowledgment that is sent by the receiver to the transmitter. |
