Apparatus and method for fast retransmission in a power line communication network

摘要

A fast retransmission method by introducing the internal node under better channel condition to join the work of retransmission after the destination node sends out the packet loss indication for unicast services. Extended to serve multicast services, a system comprising a plurality of nodes utilizes the farthest node in each branch from the source to transmit an acknowledge signal when packet loss occurs. The system then enables the closest node to the acknowledging node to retransmit the requested packet, thereby improving the target packet hit rate and data integrity with less retransmission steps.

主权项

1. A method of communicating a packet comprising the steps of:
receiving the packet from a source; receiving a retransmission request for the packet from a first node; incrementing a counter indicating the number of times the retransmission request has been received from the first node; transmitting the packet to said first node in response to said retransmission request; receiving a second retransmission request for the packet from the first node; receiving the packet from a second node; receiving a third retransmission request for the packet from the first node; and receiving the packet from the source.