Apple Inc.

Muhammad Saad

Vijay Venkataraman

Jia Tang

Sharad Garg

Tarakkumar G Dhanani

Syed A Rahim

Li Su

Muthukumaran Dhanapal

Vijay Gadde

Sandeep K Sunkesala

Pengkai Zhao

Thanigaivelu Elangovan

Wenping Lou

Disclosed are embodiments for reducing likelihood of selecting a cell identified by a Radio Access Network (RAN) Notification Area ID (RNA ID) that is different from that identifying a last or current serving cell so as to avoid an RNA update procedure; reducing Random Access Channel (RACH) transmissions for an RNA update procedure and a mobile originated (MO) data transmission in response to a Radio Resource Control (RRC) triggered RNA update procedure; and selecting a band or beam in a multi-band/beam cellular system that improves RACH efficiency.

Reducing RNA update procedures and improving RACH efficiency

Apparatuses, systems, and methods for RACH procedures to avoid excessive handover/secondary cell group failures. A base station may declare a handover and/or secondary cell group (SCG) failure and may determine that a failure threshold has been met. The base station may perform a remedial action in response to meeting the failure threshold. The failure threshold may be multi-dimensional, where a first dimension is associated with a number of handover/SCG failures and where a second dimension is associated with a time period in which the number of handover/SCG failures occurred. Further, a third dimension may be associated with a UE mobility state and a fourth dimension may be associated with whether the UE is using FR1 or FR2. The remedial action in response to meeting the failure threshold may include the base station suspending transmission of measurement object configurations for a specified period of time.

5G NR efficient FR1/FR2 operation

Growing community of inventors

Cupertino, CA, United States of America

Muhammad Saad