US 12,439,287 B2
Communication method for dual connectivity system and communication apparatus
Huiming Sun, Shenzhen (CN); Tingting Geng, Shenzhen (CN); Hongping Zhang, Shenzhen (CN); and Xingxing Hu, Shenzhen (CN)
Assigned to HUAWEI TECHNOLOGIES CO., LTD., Shenzhen (CN)
Filed by HUAWEI TECHNOLOGIES CO., LTD., Guangdong (CN)
Filed on Dec. 12, 2022, as Appl. No. 18/079,159.
Application 18/079,159 is a continuation of application No. PCT/CN2021/100823, filed on Jun. 18, 2021.
Claims priority of application No. 202010589354.X (CN), filed on Jun. 24, 2020.
Prior Publication US 2023/0109703 A1, Apr. 13, 2023
Int. Cl. H04W 24/08 (2009.01); H04W 24/10 (2009.01); H04W 36/00 (2009.01); H04W 76/15 (2018.01); H04W 76/25 (2018.01); H04W 84/02 (2009.01); H04W 88/02 (2009.01); H04W 88/08 (2009.01); H04W 92/02 (2009.01); H04W 92/10 (2009.01); H04W 92/20 (2009.01)
CPC H04W 24/10 (2013.01) [H04W 24/08 (2013.01); H04W 36/0069 (2018.08); H04W 36/0088 (2013.01); H04W 76/15 (2018.02); H04W 76/25 (2018.02); H04W 84/02 (2013.01); H04W 88/02 (2013.01); H04W 88/08 (2013.01); H04W 92/02 (2013.01); H04W 92/10 (2013.01); H04W 92/20 (2013.01)] 17 Claims
OG exemplary drawing
 
1. A communication method for a dual connectivity system, the method applied to a terminal device and comprising:
receiving first information from a first network device, the first information indicating the terminal device to deactivate a secondary cell group (SCG) of the terminal device, wherein the first network device is a master node or a secondary node of the terminal device;
receiving, from a second network device that is the master node or the secondary node, a trigger condition for relaxing the SCG RRM measurement, wherein the trigger condition comprises at least one of the following conditions: a signal quality change of a primary secondary cell (PSCell) in the SCG in a specified period is not greater than a first threshold, or signal quality of the PSCell in the specified period is greater than a second threshold; and
after deactivating the SCG based on the first information and when the trigger condition is met, relaxing SCG radio resource management (RRM) measurement.
 
17. A dual connectivity system comprising a first network device and a second network device, wherein the first network device is configured to determine that a terminal device is to deactivate a secondary cell group (SCG) of the terminal device; and send first information to the terminal device, wherein the first information indicates the terminal device to deactivate the SCG, to enable the terminal device to relax SCG radio resource management (RRM) measurement after deactivating the SCG,
wherein the first network device is a master node of the terminal device and the second network device is a secondary node of the terminal device; or the first network device is a secondary node of the terminal device and the second network device is a master node of the terminal device; and
wherein the second network device is configured to receive a trigger condition for relaxing the SCGRRM measurement, and send a response message in response to the trigger condition for relaxing the SCG RRM measurement, wherein the response message is for acknowledging or modifying the trigger condition for relaxing the SCGRRM measurement.