US 12,342,259 B2
Core network support for transport network path diversity for URLLC user plane
Borislava Gajic, Unterhaching (DE); Lajos Bajzik, Budapest (HU); and Konstantinos Samdanis, Munich (DE)
Assigned to NOKIA SOLUTIONS AND NETWORKS OY, Espoo (FI)
Appl. No. 17/772,838
Filed by Nokia Solutions and Networks Oy, Espoo (FI)
PCT Filed Nov. 6, 2020, PCT No. PCT/EP2020/081302
§ 371(c)(1), (2) Date Apr. 28, 2022,
PCT Pub. No. WO2021/089788, PCT Pub. Date May 14, 2021.
Claims priority of application No. 19207710 (EP), filed on Nov. 7, 2019.
Prior Publication US 2022/0394593 A1, Dec. 8, 2022
Int. Cl. H04W 40/24 (2009.01); H04L 45/24 (2022.01); H04W 40/02 (2009.01); H04W 40/32 (2009.01); H04W 76/12 (2018.01); H04W 76/15 (2018.01)
CPC H04W 40/246 (2013.01) [H04L 45/24 (2013.01); H04W 40/02 (2013.01); H04W 40/32 (2013.01); H04W 76/12 (2018.02); H04W 76/15 (2018.02)] 13 Claims
OG exemplary drawing
 
1. An apparatus comprising at least one processor and at least one memory including computer program code, the at least one memory and the computer program code configured to, with the at least one processor, cause the apparatus at least to perform:
in response to determining that a user plan node to be selected for a packet data unit, PDU, session requires a highly reliable communication service, acquiring information regarding disjoint transport paths of a transport network, wherein the information is acquired from a profile of the user plane node, and the information comprises transport network connectivity information comprising a connection graph of the transport network and a list of pairs of edges in the connection graph, wherein nodes in the connection graph belongs to user plane nodes or access nodes, and the edges represent transport connections between endpoints, and there is a plurality of edges between same endpoints; and
selecting, based on the acquired information, the user plane node of a plurality of user plane nodes of a core network, from which at least one of the disjoint transport paths is reachable, wherein the user plane node is selected as an endpoint of at least one tunnel out of at least two tunnels to be established for the PDU session to carry traffic between the user plane node and an access node of an access network, wherein the at least two tunnels are to be set up by mapping the at least two tunnels to the disjoint transport paths.