US 12,156,267 B2
Dual connectivity conflict resolution for distributed units
Esa Tiirola, Oulu (FI); Keeth Saliya Jayasinghe Laddu, Espoo (FI); Mark Cudak, Rolling Meadows, IL (US); Ilkka Keskitalo, Oulu (FI); and Juha Sakari Korhonen, Espoo (FI)
Assigned to Nokia Technologies Oy, Espoo (FI)
Appl. No. 17/634,301
Filed by Nokia Technologies Oy, Espoo (FI)
PCT Filed Aug. 12, 2019, PCT No. PCT/EP2019/071578
§ 371(c)(1), (2) Date Feb. 10, 2022,
PCT Pub. No. WO2021/028015, PCT Pub. Date Feb. 18, 2021.
Prior Publication US 2022/0287123 A1, Sep. 8, 2022
Int. Cl. H04W 76/15 (2018.01); H04L 5/16 (2006.01); H04W 76/20 (2018.01); H04B 7/155 (2006.01); H04L 5/00 (2006.01); H04L 5/14 (2006.01); H04W 88/08 (2009.01); H04W 88/14 (2009.01); H04W 92/24 (2009.01)
CPC H04W 76/15 (2018.02) [H04L 5/16 (2013.01); H04W 76/20 (2018.02); H04B 7/15542 (2013.01); H04L 5/0023 (2013.01); H04L 5/0091 (2013.01); H04L 5/1469 (2013.01); H04W 88/085 (2013.01); H04W 88/14 (2013.01); H04W 92/24 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method for use with a distributed unit of a radio access node configured to operate in a scenario where the distributed unit is one of multiple distributed units serving links to a multi-connected entity, the method comprising:
acquiring a first distributed unit radio resource configuration for the distributed unit;
receiving a first mobile termination configuration used for a first link corresponding to a first link of a multi-connectivity link of the multi-connected entity, wherein the first link is served with the distributed unit;
acquiring a multiplexing configuration between the first link and a second link of the multi-connectivity link, said second link being served with another distributed unit;
receiving a second mobile termination configuration corresponding to the second link of the multi-connectivity link; and
acquiring a second distributed unit radio resource configuration for the other distributed unit serving the second link;
determining availability of at least one radio resource for the multi connectivity link based on the first distributed unit radio resource configuration, the first mobile termination configuration, the multiplexing configuration, the second mobile termination configuration, and the second distributed unit radio resource configuration;
receiving the first mobile termination configuration over a radio resource control connection;
receiving the second mobile termination configuration over a radio resource control connection;
making a first determination that the multiplexing configuration indicates that the first resource is not available for at least one predefined combination of a first resource corresponding to the first mobile termination configuration and a second resource corresponding to the second mobile termination configuration;
based on the first determination, determining that the first link has highest priority; and
based on the first link having the highest priority:
making a second determination that the multiplexing configuration corresponds to frequency division multiplexing and space division multiplexing, and indicates for at least one predefined combination of the first resource corresponding to the first mobile termination configuration and a second resource corresponding to the second mobile termination configuration that the first resource and the second resource are available; and
based on the second determination, determining that the first resource is available.