US 12,262,437 B2
RRC connection resume method and device
Lei Chen, Beijing (CN); Bingzhao Li, Beijing (CN); Zonghui Xie, Shenzhen (CN); and Haifeng Yu, Beijing (CN)
Assigned to HUAWEI TECHNOLOGIES CO., LTD., Shenzhen (CN)
Filed by HUAWEI TECHNOLOGIES CO., LTD., Shenzhen (CN)
Filed on May 6, 2022, as Appl. No. 17/738,479.
Application 17/738,479 is a continuation of application No. PCT/CN2019/116341, filed on Nov. 7, 2019.
Prior Publication US 2022/0264392 A1, Aug. 18, 2022
Int. Cl. H04W 76/19 (2018.01); H04L 5/00 (2006.01); H04W 76/27 (2018.01)
CPC H04W 76/19 (2018.02) [H04L 5/0051 (2013.01); H04W 76/27 (2018.02)] 20 Claims
OG exemplary drawing
 
1. A radio resource control (RRC) connection resume method, comprising:
receiving, by a first network device, an RRC connection resume request message from a terminal device, wherein the RRC connection resume request message is used to request to resume an RRC connection of the terminal device, and the terminal device is in an RRC inactive state;
sending, by the first network device, a first message to a second network device, wherein
the first message comprises auxiliary information,
the auxiliary information comprises at least one of information used by the terminal device to perform redirection or information used by the terminal device to perform cell reselection, and the auxiliary information comprises an indication that the first network device cannot respond to the RRC connection resume request message of the terminal device,
the terminal device camps on the first network device, and
the second network device is an anchor network device of the terminal device;
receiving, by the first network device, an RRC release message from the second network device, wherein the RRC release message comprises at least one of the information used by the terminal device to perform redirection or the information used by the terminal device to perform cell reselection; and
sending, by the first network device, the RRC release message to the terminal device.