US 12,022,548 B2
Link detection method and apparatus
Juan Zheng, Beijing (CN); and Chaojun Li, Beijing (CN)
Assigned to HUAWEI TECHNOLOGIES CO., LTD., Shenzhen (CN)
Filed by HUAWEI TECHNOLOGIES CO., LTD., Shenzhen (CN)
Filed on Mar. 29, 2021, as Appl. No. 17/215,406.
Application 17/215,406 is a continuation of application No. PCT/CN2019/107067, filed on Sep. 20, 2019.
Claims priority of application No. 201811142644.9 (CN), filed on Sep. 28, 2018.
Prior Publication US 2021/0219369 A1, Jul. 15, 2021
Int. Cl. H04W 76/19 (2018.01); H04W 8/24 (2009.01); H04W 24/08 (2009.01); H04W 24/10 (2009.01); H04W 36/00 (2009.01); H04W 36/30 (2009.01); H04W 48/12 (2009.01); H04W 76/15 (2018.01); H04W 76/18 (2018.01); H04W 76/27 (2018.01)
CPC H04W 76/19 (2018.02) [H04W 8/24 (2013.01); H04W 24/10 (2013.01); H04W 76/27 (2018.02)] 16 Claims
OG exemplary drawing
 
1. A link detection method, comprising:
determining, by a terminal device, that a first radio link, between the terminal device and an access network device has failed;
detecting, by the terminal device, a second radio link, between the terminal device and the access network device;
receiving downlink information of the second radio link that is broadcast by the access network device over the first radio link, wherein the downlink information of the second radio link is used to detect a downlink quality of the second radio link;
determining that the downlink quality of the second radio link is such that the second radio link is useable; and
communicating with the access network device over the second radio link.