  Recent advances in Low-Power Wide-Area Networks have mitigated interference
by using cloud assistance. Those methods transmit the RSSI samples and
corrupted packets to the cloud to restore the correct message. However, the
effectiveness of those methods is challenged by the high transmission data
amount. This paper presents a novel method for interference mitigation in a
Edge-Cloud collaborative manner, namely ECCR. It does not require transmitting
RSSI sample any more, whose length is eight times of the packet's. We
demonstrate the disjointness of the bit errors of packets at the base stations
via real-word experiments. ECCR leverages this to collaborate with multiple
base stations for error recovery. Each base station detects and reports bit
error locations to the cloud, then both error checking code and interfered
packets from other receivers are utilized to restore correct packets. ECCR
takes the advantages of both the global management ability of the cloud and the
signal to perceive the benefit of each base station, and it is applicable to
deployed LP-WAN systems (e.g. sx1280) without any extra hardware requirement.
Experimental results show that ECCR is able to accurately decode packets when
packets have nearly 51.76% corruption.
