Method for switching transmission mode and core network element
AssigneeInterDigital Patent Holdings, Inc.
InventorsJianhua Liu, Qianxi Lu, Haorui Yang, Shukun Wang
Life of this patent
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Abstract
The present application refers to a method for switching transmission mode and a core network element. The method includes: a core network element sends first indication information to a user plane function entity, the first indication information being used to indicate to send, to a shared channel, multicast data corresponding to a terminal device; and the core network element sends second indication information to an access network element, the second indication information being used to indicate the multicast data.
Claims20
A method performed by a core network (CN) element, the method comprising:
- determining to switch, by the CN element, a data transmission mode from a unicast transmission mode to a multicast transmission mode;
- transmitting, by the CN element to a user plane function (UPF) entity, first indication information instructing the UPF entity to transmit, to a shared N3 channel, multicast data corresponding to terminal devices in a multicast group;
- and
- transmitting, by the CN element and to a radio access network (RAN) element, second indication information indicating the multicast data;
- wherein the terminal devices have been respectively receiving unicast data within a same packet data unit (PDU) session on data flows or quality of service (QoS) flows for which multicast transmission can be performed and that carry same multicast data.
A core network (CN) element comprising:
- a processor;
- and
- a memory for storing a computer program executable on the processor;
- wherein the processor is configured to execute the computer program to:
- determine to switch a data transmission mode from a unicast transmission mode to a multicast transmission mode;
- transmit, to a user plane function (UPF) entity, first indication information instructing the UPF entity to transmit, to a shared N3 channel, multicast data corresponding to terminal devices in a multicast transmission group;
- and
- transmit, to a radio access network (RAN) element, second indication information information indicating the multicast data;
- wherein the terminal devices have been respectively receiving unicast data within a same packet data unit (PDU) session on data flows or quality of service (QoS) flows for which multicast transmission can be performed and that carry same multicast data.
Dependencies are inferred from the claim text.