US 12,256,272 B2
Network nodes and methods performed therein for supporting handover of a wireless device
Vijaya Parampalli Yajnanarayana, Bangalore (IN); Henrik Rydén, Solna (SE); László Hévizi, Piliscsaba (HU); Ankit Jauhari, Bangalore (IN); and Mirsad Cirkic, Linköping (SE)
Assigned to Telefonaktiebolaget LM Ericsson (Publ), Stockholm (SE)
Appl. No. 17/426,034
Filed by Telefonaktiebolaget LM Ericsson (publ), Stockholm (SE)
PCT Filed Jan. 31, 2020, PCT No. PCT/SE2020/050092
§ 371(c)(1), (2) Date Jul. 27, 2021,
PCT Pub. No. WO2020/159430, PCT Pub. Date Aug. 6, 2020.
Claims priority of application No. 201911003917 (IN), filed on Jan. 31, 2019.
Prior Publication US 2022/0303843 A1, Sep. 22, 2022
Int. Cl. H04W 36/00 (2009.01); H04W 36/32 (2009.01)
CPC H04W 36/0033 (2013.01) [H04W 36/00835 (2018.08); H04W 36/008375 (2023.05); H04W 36/322 (2023.05); H04W 36/324 (2023.05)] 19 Claims
OG exemplary drawing
 
1. A method implemented by a network node in a wireless communication network comprising multiple network nodes, the method comprising:
selecting, based on current radio environment conditions experienced by a wireless device, a radio environment context from a plurality of stored radio environment contexts indicative of radio conditions at respective locations in the wireless communication network, the selecting of the radio environment context being based on minimizing, using a Q-table comprising the plurality of stored radio environment contexts, a distance metric between the current radio environment conditions and each of the stored radio environment contexts in the Q-table, the radio environment context being a closest one of the stored radio environment contexts;
selecting a target network node for a handover using a mapping between the selected radio environment context and one or more candidate network nodes that are predicted, based on historical measurement data collected over time from a plurality of wireless devices, to provide the highest expected rewards in terms of a performance metric given the selected radio environment context; and
causing the handover of the wireless device to the target network node.