Radio access network node, radio terminal, core network node, and method therefor
AssigneeNEC Corporation
InventorsHisashi FUTAKI, Sadafuku HAYASHI
Life of this patent
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Abstract
During handover of a radio terminal (1) from a first network to a second network, a target RAN node (3) is operates to: receive, from a core network (5), slice information about a network slice which is included in the second network and to which the radio terminal (1) is to be connected; create, upon receiving the slice information, radio resource configuration information that is to be used by the radio terminal (1) after the handover in the second network; and transmit this radio resource configuration information through the first network to the radio terminal (1). It is possible to contribute to appropriately configuring an AS layer or NAS layer of a target RAT in inter-RAT handover.
Claims17
A target radio access network (RAN) node associated with a second network, the target RAN node comprising:
- at least one memory;
- and
- at least one processor coupled to the at least one memory and configured to, during handover of a radio terminal from a first network to the second network:
- receive, from a core network, slice information about a network slice which is included in the second network and to which the radio terminal is to be connected;
- create, upon receiving the slice information, radio resource configuration information to be used by the radio terminal after the handover in the second network;
- and transmit the radio resource configuration information through the first network to the radio terminal.
A source radio access network (RAN) node associated with a first network, the source RAN node comprising:
- at least one memory;
- and
- at least one processor coupled to the at least one memory and configured to, during handover of a radio terminal from the first network to a second network:
- receive, from the second network, a handover-related message, the handover-related message containing at least one of slice information about a network slice which is included in the second network and to which the radio terminal is to be connected, and radio resource configuration information based on the network slice in the second network;
- and
- transmit the handover-related message to the radio terminal.
A radio terminal comprising:
- at least one memory;
- and
- at least one processor coupled to the at least one memory and configured to, during handover from a first network to which the radio terminal is connected to a second network, receive a handover-related message from a radio access network (RAN) node of the first network, the handover-related message containing at least one of slice information about a network slice in the second network and radio resource configuration information based on the network slice in the second network.
A core network node comprising:
- at least one memory;
- and
- at least one processor coupled to the at least one memory and configured to, during handover of a radio terminal from a first network to a second network, send, to a target radio access network (RAN) node associated with the second network, slice information about a network slice which is included in the second network and to which the radio terminal is to be connected.
A method in a target radio access network (RAN) node associated with a second network, the method comprising:
- during handover of a radio terminal from a first network to the second network,
- receiving, from a core network, slice information about a network slice which is included in the second network and to which the radio terminal is to be connected;
- creating, upon receiving the slice information, radio resource configuration information to be used by the radio terminal after the handover in the second network;
- and
- transmitting the radio resource configuration information through the first network to the radio terminal.
-23. (canceled)
Dependencies are inferred from the claim text.