US 12,218,824 B2
Identification of robust wireless routing paths
Johan Åkerberg, Västerås (SE); Markus Eriksson, Uppsala (SE); and Tomas Olofsson, Knivsta (SE)
Assigned to ABB Schweiz AG, Baden (CH)
Appl. No. 17/289,857
Filed by ABB Schweiz AG, Baden (CH)
PCT Filed Nov. 13, 2018, PCT No. PCT/EP2018/081022
§ 371(c)(1), (2) Date Apr. 29, 2021,
PCT Pub. No. WO2020/098914, PCT Pub. Date May 22, 2020.
Prior Publication US 2021/0409307 A1, Dec. 30, 2021
Int. Cl. H04W 40/14 (2009.01); H04L 45/128 (2022.01); H04L 45/24 (2022.01)
CPC H04L 45/1287 (2013.01) [H04L 45/1283 (2013.01); H04L 45/24 (2013.01); H04W 40/14 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A method for routing packets between a terminal device and a control system node via intermediate nodes on wireless paths in a wireless network, the method comprising:
obtaining information on disturbances of wireless paths used for communicating packets of a traffic flow between the intermediate nodes in the wireless network, wherein the disturbances are caused by a non-stationary object;
determining, based on the information on disturbances, mutual correlation between the disturbances of the wireless paths;
using the determined mutual correlation to determine which of the intermediate nodes the packets of the traffic flow should be routed; and
routing the packets of the traffic flow between the terminal device and the control system node via some of the intermediate nodes and along disjoint wireless paths, whereby the same packets are simultaneously transmitted in parallel on the disjoint wireless paths having mutual correlation not higher than a threshold correlation value;
wherein the threshold correlation value corresponds to the wireless paths having an uncorrelated probability of simultaneous packet loss.