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. 25, 2025
Filed:
Oct. 02, 2019
Qualcomm Incorporated, San Diego, CA (US);
Jing Lei, San Diego, CA (US);
Muhammad Nazmul Islam, Littleton, MA (US);
Linhai He, San Diego, CA (US);
Amir Aminzadeh Gohari, Santa Clara, CA (US);
Yuanning Yu, Santa Clara, CA (US);
Enoch Shiao-Kuang Lu, San Diego, CA (US);
Yi Huang, San Diego, CA (US);
Ruiming Zheng, Beijing, CN;
Wanshi Chen, San Diego, CA (US);
QUALCOMM Incorporated, San Diego, CA (US);
Abstract
Wireless communications systems and methods related to the timing arrangements and the transmission gap configurations in 2-step random access channel (RACH) procedures to improve system latency and reliability of a RACH HARQ process are provided. The UE transmits a first message including a random access preamble and a payload, and then monitors for a second message in response to the first message during a random access response (RAR) window. In response to determining that no second message is received by the UE from the BS or a back off indicator is received within the RAR window, the UE re-transmits the preamble and payload of the first message after the RAR window lapses. In response to determining if the second message received within the RAR window carries a FallbackRAR or SuccessRAR, the UE then determines to re-transmit the payload of the first message based on the FallbackRAR, or to transmit an acknowledgement message based on the SuccessRAR.