US 12,457,653 B2
Information transmission method and apparatus
Xiaoli Shi, Shanghai (CN); Wenjie Peng, Shanghai (CN); and Qinghai Zeng, Shanghai (CN)
Assigned to Huawei Technologies Co., Ltd., Shenzhen (CN)
Filed by HUAWEI TECHNOLOGIES CO., LTD., Guangdong (CN)
Filed on May 27, 2021, as Appl. No. 17/332,642.
Application 17/332,642 is a continuation of application No. PCT/CN2019/121658, filed on Nov. 28, 2019.
Claims priority of application No. 201811444968.8 (CN), filed on Nov. 29, 2018.
Prior Publication US 2021/0289414 A1, Sep. 16, 2021
Int. Cl. H04W 76/15 (2018.01); H04B 7/06 (2006.01); H04W 36/00 (2009.01); H04W 36/30 (2009.01); H04W 56/00 (2009.01)
CPC H04W 76/15 (2018.02) [H04B 7/06964 (2023.05); H04W 36/0055 (2013.01); H04W 36/305 (2018.08); H04W 56/001 (2013.01); H04W 36/00838 (2023.05)] 23 Claims
OG exemplary drawing
 
1. An information transmission method, comprising:
sending, by a first network device, first information to a terminal device, wherein the first information is used to indicate the terminal device to be handed over from a first cell to a second cell, wherein the first cell is a cell served by a second network device, wherein the second cell is a cell served by a third network device, and wherein the second network device and the third network device are different network devices;
in response to sending the first information to the terminal device, receiving, by the first network device, second information sent by the terminal device, wherein the second information comprises information about beam failure recovery that occurs between the terminal device and the second cell and information about a resource, and wherein the information about the resource comprises any one or more of an identifier of a beam used when the terminal device encounters the beam failure recovery, random access information of the terminal device on the beam, a physical cell identifier, or cell frequency information; and
performing, by the first network device, mobility robustness optimization based on the second information, wherein the second information comprises a time period from a time at which the terminal device performs cell change to a time at which a radio link failure occurs.