US 12,295,059 B2
Handling of logged minimization drive test configurations in dual connectivity scenario
Malik Wahaj Arshad, Stockholm (SE); Pradeepa Ramachandra, Linköping (SE); Wei Shen, Linköping (SE); and Robert Petersen, Linköping (SE)
Assigned to TELEFONAKTIEBOLAGET LM ERICSSON (PUBL), Stockholm (SE)
Appl. No. 17/634,683
Filed by Telefonaktiebolaget LM Ericsson (PUBL), Stockholm (SE)
PCT Filed Jun. 25, 2020, PCT No. PCT/SE2020/050659
§ 371(c)(1), (2) Date Feb. 11, 2022,
PCT Pub. No. WO2021/029800, PCT Pub. Date Feb. 18, 2021.
Claims priority of provisional application 62/886,105, filed on Aug. 13, 2019.
Prior Publication US 2022/0272587 A1, Aug. 25, 2022
Int. Cl. H04W 36/00 (2009.01); H04W 76/27 (2018.01); H04W 36/14 (2009.01)
CPC H04W 76/27 (2018.02) [H04W 36/0055 (2013.01); H04W 36/0058 (2018.08); H04W 36/00698 (2023.05); H04W 36/13 (2023.05); H04W 36/142 (2023.05)] 12 Claims
OG exemplary drawing
 
1. A method performed by a wireless device, the method comprising:
receiving, from a network node, a Minimization of Drive Test, MDT, configuration for a master cell group, MCG, and a secondary cell group, SCG;
while the wireless device is in an idle state or an inactive state and operating according to a first Radio Access Technology, RAT, logging MDT measurements for the MCG and the SCG based on the MDT configuration;
after transitioning from the idle or inactive state to a connected state and after handover from a source cell associated with the first RAT to a target cell associated with a second RAT, transmitting at least one MDT report to a target network node associated with the target cell; and
wherein the wireless device is in the inactive state or the idle state when a change to the MDT configuration is received, and wherein the SCG is not supported by the target cell, and the method further comprises at least one of:
discarding the MDT measurements for the SCG;
transmitting the MDT measurements for the SCG to a master network node for forwarding to a secondary node associated with the SCG; and
transmitting the MDT measurements for the SCG to the master network node for forwarding to a TCE associated with the SCG.