A method and system for door lock video stream distribution backhaul

Abstract

The application discloses a door lock video stream distribution backhaul method and system, the method comprising: establishing a multicast forwarding table by a router according to a unique identifier obtained when each door lock accesses a network; assigning a target cell ID and a target door lock ID for each sub-flow from an available assisting door lock list according to an event of detecting uplink path congestion of a source door lock; encapsulating the sub-flow as a multicast message carrying the target identifier and sending by the source door lock according to the identifier assigned for each sub-flow; unicasting and forwarding original video data packets to a central server by the source door lock as a source; sorting and reorganizing the video data packets received from the source door lock and multiple assisting door locks by the central server according to sequence numbers; directly requesting the source door lock to retransmit lost specific data packets by the server when detecting discontinuous sequence numbers, and directly unicasting and supplementing by the source door lock. The embodiment of the application can improve the reliability, real-time performance and overall utilization of network bandwidth of video stream backhaul.

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