US 12,382,253 B2
Method for mode switching and device
Zhenhua Xie, Guangdong (CN); and Xiaowan Ke, Guangdong (CN)
Assigned to VIVO MOBILE COMMUNICATION CO., LTD., Guangdong (CN)
Filed by VIVO MOBILE COMMUNICATION CO., LTD., Guangdong (CN)
Filed on Aug. 1, 2022, as Appl. No. 17/878,326.
Application 17/878,326 is a continuation of application No. PCT/CN2021/077043, filed on Feb. 20, 2021.
Claims priority of application No. 202010108819.5 (CN), filed on Feb. 21, 2020.
Prior Publication US 2022/0377507 A1, Nov. 24, 2022
Int. Cl. H04W 4/06 (2009.01); H04W 48/18 (2009.01); H04W 76/10 (2018.01)
CPC H04W 4/06 (2013.01) [H04W 48/18 (2013.01); H04W 76/10 (2018.02)] 20 Claims
OG exemplary drawing
 
1. A method for mode switching, performed by a first network function, wherein the method comprises:
invoking a channel mode switch operation towards a second network function, wherein a parameter of the channel mode switch operation comprises first information, and the first information comprises a channel mode switch command; and
the channel mode switch command is used to notify a target party to perform a channel mode switch operation, wherein, the channel mode switch operation comprises switch from a multicast channel to a unicast channel or switch from a unicast channel to a multicast channel,
the multicast channel comprises a multicast service data transmission channel between a core network user plane function and a radio access network node, the multicast channel is shared by all user terminals of a multicast service served by the radio access network node;
the unicast channel is a channel established by a core network user plane function for multicast service data transmission with each user terminal to separately send multicast service data to each user terminal.