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:
Feb. 23, 2021
Filed:
May. 31, 2019
Alibaba Group Holding Limited, Grand Cayman, KY;
Zhen Tao, Hangzhou, CN;
ALIBABA GROUP HOLDING LIMITED, George Town, KY;
Abstract
The present application discloses a communication method performed by a relay device. The method includes: receiving a first uplink data frame from a terminal, the first uplink data frame comprising information indicating a first period; determining a length of a first preamble according to the first period and a first time length, the first time length being equal to a length of a third preamble plus a second time length; sending a second downlink data frame to the terminal, the second downlink data frame comprising the first preamble; and receiving a first downlink data frame from a base station, the first downlink data frame comprising a second preamble, wherein a length of the second preamble is less than or equal to each of the length of the first preamble and the length of the third preamble.