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:
Jul. 12, 2022
Filed:
Jun. 16, 2020
Apple Inc., Cupertino, CA (US);
Sriram Subramanian, Santa Clara, CA (US);
Tarakkumar G. Dhanani, San Jose, CA (US);
Shiva Krishna Narra, San Jose, CA (US);
Sharad Garg, Cupertino, CA (US);
Vijay Gadde, San Jose, CA (US);
Madhukar K. Shanbhag, Santa Clara, CA (US);
Sandeep K. Sunkesala, San Jose, CA (US);
Sree Ram Kodali, San Jose, CA (US);
Haitong Sun, Irvine, CA (US);
Sanjeevi Balasubramanian, San Jose, CA (US);
Vishwanth Kamala Govindaraju, Mountain View, CA (US);
Wei Zhang, Santa Clara, CA (US);
Wei Zeng, San Diego, CA (US);
Dawei Zhang, Saratoga, CA (US);
Yuchul Kim, San Jose, CA (US);
Hong He, Cupertino, CA (US);
Alosious Pradeep Prabhakar, Singapore, SG;
Apple Inc., Cupertino, CA (US);
Abstract
This disclosure relates to methods and devices for transmitting acknowledgment messages on a preferred cell in a carrier aggregation scenario. A user equipment device (UE) establishes a connection with a primary cell and one or more secondary cells, and determines a preferred cell from among the primary cell and the one or more secondary cells based at least in part on one or more quality metrics. The UE may determine the preferred cell at least in part in response to determining that transmission power of the UE has been limited due to a specific absorption rate (SAR) backoff feature of the UE. The UE transmits a notification to a network indicating that the UE intends to transmit an acknowledgement message to the preferred cell, and transmits the acknowledgment message to the preferred cell.