MUMBAI, India, June 6 -- Intellectual Property India has published a patent application (202517022015 A) filed by Apple Inc., Cupertino, U.S.A., on March 11, for 'closed loop antenna selection for a single transmitter wireless device.'
Inventor(s) include Zhang Lijie.
The application for the patent was published on June 6, under issue no. 23/2025.
According to the abstract released by the Intellectual Property India: "This application describes mechanisms to manage closed loop antenna selection for a wireless device. The wireless device transmits sounding reference signal (SRS) resources configured by a cellular wireless network in an SRS resource set and receive SRS indicator (SRI) values to indicate antennas for subsequent uplink transmission of one or more physical layer channels by the wireless device including a physical uplink shared channel (PUSCH) a physical uplink control channel (PUCCH) and a physical random access channel (PRACH). The wireless device supplements the closed loop antenna selection with an open loop antenna selection and uses the open loop antenna selection for non PUSCH channels when a most recently SRI value can be considered stale. SRI based closed loop antenna selection is extended to frequency division duplexing (FDD) bands. Transmit precoding matrix indicator (TPMI) group values are also used to indicate differential transmit power capabilities of various antennas of the wireless device to the cellular wireless network."
The patent application was internationally filed on Sept. 23, 2022, under International application No.PCT/CN2022/120816.
Disclaimer: Curated by HT Syndication.
