US 11,706,053 B2
Differential latency measurement
Achim Luft, Braunschweig (DE); Maik Bienas, Schöppenstedt (DE); Martin Hans, Bad Salzdetfurth (DE); and Andreas Schmidt, Braunschweig (DE)
Assigned to IPCom GmbH & Co. KG, Pullach (DE)
Appl. No. 17/292,453
Filed by IPCom GmbH & Co. KG, Pullach (DE)
PCT Filed Nov. 29, 2019, PCT No. PCT/EP2019/083095
§ 371(c)(1), (2) Date May 10, 2021,
PCT Pub. No. WO2020/109555, PCT Pub. Date Jun. 4, 2020.
Claims priority of application No. 18209415 (EP), filed on Nov. 30, 2018.
Prior Publication US 2021/0351997 A1, Nov. 11, 2021
Int. Cl. H04L 12/54 (2022.01); H04L 43/067 (2022.01); H04L 43/0817 (2022.01); H04L 43/0852 (2022.01); H04L 43/16 (2022.01); H04W 36/00 (2009.01); H04L 45/121 (2022.01)
CPC H04L 12/5691 (2013.01) [H04L 43/067 (2013.01); H04L 43/0817 (2013.01); H04L 43/0858 (2013.01); H04L 43/16 (2013.01); H04L 45/121 (2013.01); H04W 36/0016 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method of selecting an optimal communication routing between a user equipment, UE, device and a core network wherein a plurality of differing radio communication paths are establishable between the UE device and the core network, the method comprising:
in a state where only a first radio communication path is established between the UE device and the core network, determining at a first one of the UE device and a core network entity that a communication path latency measurement shall be performed and informing the other one of the UE device and the core network entity that the communication path latency measurement will be performed;
establishing at least a second radio communication path between the UE device and the core network;
transmitting over at least the first radio communication path and the second radio communication path duplicate data packets;
determining from the data packets received over the first and the second radio communication paths a latency difference measurement between transmission over the first radio communication path and the second radio communication path;
using the latency difference measurement choosing the radio communication routing from the first radio communication path and the second radio communication path for subsequent communication.