| 摘要 |
An automatic retransmission protocol between one broadcast unit and a plurality of receiving units is achieved by assigning an ARQ scheme to the broadcast unit and receiving units. A plurality of return windows are assigned for transmitting return messages from the corresponding plurality of receiving units to the broadcast unit. The broadcast unit broadcasts a packet simultaneously to the plurality of receiving units. The broadcast unit receives the return messages from the plurality of receiving units and forms a composite acknowledgement from the returnmessages. Then, the broadcast unit retransmits at least portion of the packet, that is not acknowledged by the composite acknowledgement, simultaneously to all of the receiving units. |
