US 10,893,405 B2
Network nodes and methods performed therein for enabling communication in a communication network
Oscar Zee, Stockholm (SE); Paul Schliwa-Bertling, Ljungsbro (SE); Angelo Centonza, Stockholm (SE); and Jari Vikberg, Järna (SE)
Assigned to Telefonaktiebolaget LM Ericsson (publ), Stockholm (SE)
Appl. No. 16/74,044
Filed by Telefonaktiebolaget LM Ericsson (publ), Stockholm (SE)
PCT Filed Feb. 12, 2016, PCT No. PCT/SE2016/050107
§ 371(c)(1), (2) Date Jul. 30, 2018,
PCT Pub. No. WO2017/135860, PCT Pub. Date Aug. 10, 2017.
Claims priority of provisional application 62/291,572, filed on Feb. 5, 2016.
Prior Publication US 2019/0045351 A1, Feb. 7, 2019
Int. Cl. H04W 8/06 (2009.01); H04W 48/18 (2009.01); H04W 76/11 (2018.01); H04W 76/16 (2018.01)
CPC H04W 8/06 (2013.01) [H04W 48/18 (2013.01); H04W 76/11 (2018.02); H04W 76/16 (2018.02)] 9 Claims
OG exemplary drawing
 
1. A method performed by a Radio Access Network (RAN) node, for enabling connection setup for a wireless device in a communication network, which communication network comprises a first network and a second network, wherein the first network is a home network of the wireless device and the second network is a network which is visited by the wireless device, and wherein the first network and the second network each comprise partitioned sets of functionalities, which sets of functionalities each belong to a network slice of the network, wherein a first set of functionalities in the first network belongs to a first network slice supporting the wireless device, and which first set of functionalities is separated from another set of functionalities out of a total set of functionalities in the first network, wherein the wireless device is roaming from the first network to the second network, the method comprising:
receiving, from the wireless device, a first network identity for the home network, an identity of the first network slice supporting the wireless device in the home network and a second network identity for the second network;
retrieving an identity of a second network slice capable of supporting the wireless device in the second network, based on the received first network identity, the first network slice identity and the second network identity;
determining a second core network node based on the second network identity and the retrieved second network slice identity; and
transmitting, to the determined second core network node, an initial setup message for the wireless device, which initial setup message comprises an indication of the second network identity and the identity of the second network slice capable of supporting the wireless device;
wherein retrieving the identity of the second network slice comprises sending, to a data base (DB) the received first network identity, the first network slice identity and the second network identity, and receiving from the DB an identification of the second network slice capable of supporting the wireless device in the second network, based on the first network identity, the first network slice identity and the second network identity.