Roaming support for next generation slice architecture
AssigneeSamsung Electronics Co., Ltd.
InventorJayshree A. Bharatia
Life of this patent
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Abstract
A core network includes a home network and a visiting network. The home network includes a first slice selector module configured to select a first slice and a first network function selection module configured to select a network function within the first slice. The visiting network includes a second slice selector module configured to communicate with the first slice selector and select a second slice, a second network function selection module configured to select a network function within the second slice, and a common core network function (CCNF) module. The CCNF module communicates with the second slice selector module to receive an identity of the first slice and an identity of the second slice, assign a temporary identifier, and transmit the temporary identifier to a user equipment.
Claims16
A method for operating a core network including a common core network function (CCNF) and a network slice selector (NSS), the method comprising:
- receiving an attach request from a user equipment (UE) at the CCNF in a visited network providing a roaming service for a home network;
- transmitting a slice request from the CCNF in the visited network to the NSS in the visited network;
- transmitting, from the NSS in the visited network, the slice request to a home NSS in the home network;
- receiving, by the NSS in the visited network from the home NSS in the home network, a response to the slice request that includes an identity of a home network slice selected by the home NSS in the home network based on the slice request;
- selecting, by the NSS in the visited network, based on criteria included in the slice request from the CCNF, at least one network slice in the visited network that corresponds to the home network slice;
- and
- transmitting, by the CCNF in the visited network, an attach response to the UE based on the selected at least one network slice in the visited network and the home network slice.
A server comprising:
- a common core network function (CCNF) in a visited network providing a roaming service for a home network;
- and
- a network slice selector (NSS) coupled to the CCNF in the visited network,
- wherein the CCNF in the visited network is configured to:
- receive an attach request from a user equipment (UE), and
- transmit a slice request to the NSS in the visited network,
- wherein the NSS in the visited network is configured to:
- transmit the slice request to a home NSS in the home network,
- receive, from the home NSS in the home network, a response to the slice request that includes an identity of a home network slice selected by the home NSS in the home network based on the slice request, and
- select, based on criteria included in the slice request, at least one network slice in the visited network that corresponds to the home network slice, and
- wherein the CCNF in the visited network is configured to transmit an attach response based on the selected at least one network slice in the visited network and the home network slice.
Dependencies are inferred from the claim text.