Apple Inc.

Dhiraj J Shirke

Sanjeevi Balasubramanian

Pranav Tripathi

Rohit U Nabar

Parvathanathan Subrahmanya

Shiva Krishna Narra

Madhukar K Shanbhag

Dirk Nickisch

Imran Haider G Balsania

User equipment in close proximity may transfer data and control information. For example, the user equipment may exchange data or data sets between each other. Each user equipment can receive and transmit data using radio access technologies. A group of user equipments may include active user equipment and passive user equipment. Active user equipment connects with one or more base stations and transfers data on a wireless communication network via the base station. The active user equipment may communicate with other active user equipment and passive user equipment. Passive user equipment may not connect to any base station and/or the wireless communication network and may communicate with other passive user equipment and active user equipment (e.g., via a sidelink, peer-to-peer, or device-to-device channel).

Unified operation for user equipment groups

A user equipment (UE) is configured to initiate a two-step random access channel (RACH) procedure to synchronize with a base station, initiate a fallback four-step RACH procedure after the two-step RACH procedure, configure a random access preamble transmission for the four-step RACH procedure, wherein configuring the random access preamble transmission comprises deriving a physical random access channel (PRACH) transmit power parameter value based on a parameter used to perform a transmission during the two-step RACH procedure and transmit the random access preamble for the four-step RACH procedure to the base station.

Efficient PRACH transmission in a fallback RACH procedure

Growing community of inventors

San Jose, CA, United States of America

Dhiraj J Shirke