Method and device for supporting handover
AssigneeSamsung Electronics Co., Ltd.
InventorsLixiang Xu, Xiaoning Ma, Hong Wang
Life of this patent
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Abstract
The disclosure relates to a 5G or 6G communication system for supporting a higher data transmission rate. The present disclosure provides a method and equipment for supporting a handover, which discloses: a method performed by a first node in a wireless communication network, including: receiving a handover request message from a core network node; sending a first message including an indication of direct data forwarding to a second node; and receiving a second message including information on data forwarding tunnel allocated by the second node from the second node.
Claims6
A method performed by a centralized unit-control plane (CU-CP) of a target base station in a wireless communication network, the method comprising:
- receiving, by the CU-CP, a handover request message from a core network node;
- transmitting, by the CU-CP to a CU-user plane (UP) of the target base station, a first message including a data forwarding information request, and first information on direct forwarding path availability;
- and
- receiving, by the CU-CP from the CU-UP, a second message including second information related to data forwarding,
- wherein the second information related to the data forwarding includes a tunnel endpoint identifier (TEID) and a transport layer address for inter-system direct data forwarding, and
- wherein the transport layer address is an internet protocol (IP) address and is assigned by the CU-UP from an address space reserved for a source base station, and
- wherein the second information related to the data forwarding is assigned by the CU-UP for the inter-system direct data forwarding between a 5G system (5GS) and an evolved packet core (EPC), in case that the first information on the direct forwarding path availability in the first message is set to inter-system direct path available.
A centralized unit-control plane (CU-CP) of a target base station in a wireless communication network, the CU-UP comprising:
- a transceiver;
- and
- at least one processor configured to:
- receive, by the CU-CP, a handover request message from a core network node,
- transmit, by the CU-CP to a CU-user plane (UP) of the target base station, a first message including a data forwarding information request, and first information on direct forwarding path availability;
- and
- receive, by the CU-CP from the CU-UP, a second message including second information related to data forwarding,
- wherein the second information related to the data forwarding includes a tunnel endpoint identifier (TEID) and a transport layer address for inter-system direct data forwarding, and wherein the transport layer address is an internet protocol (IP) address and is assigned by the CU-UP from an address space reserved for a source base station, and
- wherein the second information related to the data forwarding is assigned by the CU-UP for the system direct data forwarding between a 5G system (5GS) and an evolved packet core (EPC), in case that the first information on the direct forwarding path availability in the first message is set to inter-system direct path available.
Dependencies are inferred from the claim text.