The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 14, 2021
Filed:
Mar. 23, 2017
Huawei Technologies Co., Ltd., Shenzhen, CN;
Kai Xu, Shenzhen, CN;
Hongcheng Zhuang, Shenzhen, CN;
HUAWEI TECHNOLOGIES CO., LTD., Shenzhen, CN;
Abstract
Embodiments of the present invention provide an initial access method and apparatus. The method includes: sending, by an access network device, a synchronization signal to user equipment by using at least two downlink beams, where the synchronization signal includes downlink beam indexes of the at least two downlink beams; receiving, by the access network device, a random access preamble sequence sent by the user equipment; and sending, by the access network device, a random access response RAR message to the user equipment by using at least two downlink beams, so that the user equipment completes initial access. In the initial access method provided in the embodiments of the present invention, a disadvantage of channel instability in a high-frequency transmission environment in a new radio system is overcome, to improve initial access performance in the NR system and further improve user experience for the system.