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:
Nov. 26, 2024
Filed:
Aug. 05, 2020
Apple Inc., Cupertino, CA (US);
Sarma V. Vangala, Campbell, CA (US);
Tarik Tabet, Los Gatos, CA (US);
Chunxuan Ye, San Diego, CA (US);
Dawei Zhang, Saratoga, CA (US);
Fangli Xu, Beijing, CN;
Haijing Hu, Beijing, CN;
Murtaza A Shikari, Mountain View, CA (US);
Naveen Kumar R Palle Venkata, San Diego, CA (US);
Rafael L Rivera-Barreto, Santa Clara, CA (US);
Ralf Rossbach, Munich, DE;
Sreevalsan Vallath, Dublin, CA (US);
Srinivasan Nimmala, San Jose, CA (US);
Wei Zeng, San Diego, CA (US);
Yuqin Chen, Shenzhen, CN;
Zhibin Wu, Los Altos, CA (US);
Apple Inc., Cupertino, CA (US);
Abstract
A user equipment (UE) device may perform random access to a base station in the context where propagation delay between the base station and the UE device is large. The UE device randomly selects a random access preamble from an available set of preambles. The UE device selects a time slot for transmission of the random access preamble based on a configured correspondence between allowable time slots and subsets of the available set. The UE device transmits the random access preamble to a base station in the selected time slot, with timing advance to compensate for a common delay. Thus, the base station, knowing the configured correspondence, is able to determine the time slot in which the random access preamble was transmitted. The UE device receives a random access response that has been addressed with a Random Access Radio Network Temporary Identifier (RA-RNTI).