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:
Mar. 01, 2022
Filed:
Oct. 03, 2019
Qualcomm Incorporated, San Diego, CA (US);
Muhammad Nazmul Islam, Littleton, MA (US);
Navid Abedini, Somerset, NJ (US);
Samel Celebi, West New York, NJ (US);
Tao Luo, San Diego, CA (US);
Jianghong Luo, Skillman, NJ (US);
Karl Georg Hampel, Hoboken, NJ (US);
Junyi Li, Chester, NJ (US);
QUALCOMM Incorporated, San Diego, CA (US);
Abstract
Methods, systems, and devices for wireless communication are described. Generally, the described techniques provide for transmitting a first random-access channel (RACH) message and receiving a second RACH message that includes a timing advance command (TAC) in a physical downlink control channel (PDCCH). These techniques may be used by a user equipment (UE) or an integrated access backhaul (IAB) node to achieve time synchronization while limiting overhead. In one example, in an IAB network, an IAB node may transmit a first RACH message to a neighbor node, and the IAB node may receive a TAC in a PDCCH of a second RACH message from the neighbor node. In another example, in a beam failure recovery (BFR) procedure, a UE may transmit a first RACH message to a base station, and the UE may receive a TAC in a PDCCH of a second RACH message from the base station.