Zigbee Router Device, Zigbee End Device, System and Methods for Reducing Redundancy

Abstract

A method for delivering data frames from a source device to a Zigbee end device, ZED, via a Zigbee router device, ZR, comprises, at the ZR, receiving, a data request and at least one data block from a transmission window of a plurality of data blocks from the source device, and placing the received data block in a queue for transmission; receiving a data request from the ZED; transmitting, the received data block from the queue, to the ZED and receiving an acknowledgement from the ZED. The method further includes receiving a re-transmission of the transmission window of the data blocks from the source device; and dropping, at least one re-transmitted data block, previously received and transmitted by the ZR, and transmitting, by the ZR, the remaining re-transmitted data block(s) to the ZED.

CPC Classifications