US 12,192,750 B2
Handover with sequentially identified packets
Subramanya Chandrashekar, Bangalore (IN); Jean-Michel Pugeat, Massy (FR); Raghuram Reddy Krishnamurthy, Bangalore (IN); and Bruno Landais, Lannion (FR)
Assigned to NOKIA SOLUTIONS AND NETWORKS OY, Espoo (FI)
Appl. No. 18/258,069
Filed by Nokia Solutions and Networks Oy, Espoo (FI)
PCT Filed Oct. 22, 2021, PCT No. PCT/EP2021/079356
§ 371(c)(1), (2) Date Jun. 16, 2023,
PCT Pub. No. WO2022/128213, PCT Pub. Date Jun. 23, 2022.
Claims priority of application No. 20206322 (FI), filed on Dec. 17, 2020.
Prior Publication US 2024/0049079 A1, Feb. 8, 2024
Int. Cl. H04W 36/08 (2009.01); H04W 36/02 (2009.01); H04W 36/18 (2009.01)
CPC H04W 36/08 (2013.01) [H04W 36/0235 (2023.05); H04W 36/18 (2013.01)] 11 Claims
OG exemplary drawing
 
1. A method performed at a node, the method comprising:
establishing a communication link between a source cell and a user equipment;
transmitting a series of data packets to the user equipment, each data packet comprising an associated sequence identifier;
receiving an acknowledgement of successful receipt of a data packet of the series of data packets by the user equipment, the acknowledgement comprising a sequence identifier of the successfully received data packet;
receiving an indication of an identified handover target cell;
requesting handover of the user equipment to the identified handover target cell;
receiving an acknowledgement of handover request from the identified handover target cell; and
forwarding, to the identified handover target cell, data packets to be transmitted to the user equipment, each of the forwarded data packets comprising an associated sequence identifier and a sequence identifier of a respective most recent successfully received data packet.