Samsung Electronics Co., Ltd.

Hoda Shahmohammadian

Jung Hyun Bae

Hamid Saber

Jungwon Lee

A User Equipment is disclosed that determines a default Transmission Configuration Indicator (TCI) state in a wireless communication network in a High-Speed Train environment. The UE determines that wireless communication is being carried out in Frequency Range 2 and receives one or more Core Resource Sets (CORESETs) carrying a Physical Downlink Control Channel (PDCCH) with a Downlink Control Information (DCI); that a time offset between reception by the UE of the DCI and a corresponding Physical Downlink Shared Channel (PDSCH) is less than a predetermined time threshold; that the PDSCH is configured with a Single Frequency Network (SFN) scheme; that an option to enable two default TCI states for the UE is not configured; whether the PDCCH is configured with an SFN scheme; and based on a result of determining whether the PDCCH is configured with an SFN scheme, a default TCI state is determined for PDSCH reception.

Enhancements to support HST-SFN deployment scenario

A device, such as a UE, and a Transmit and Receive Point (TRP) in a High-Speed Train-Single Frequency Network (HST-SFN) are disclosed that provide network-assisted frequency-offset compensation for the device. The device includes a receiver that receives a first reference signal and a second reference signal sent over a wireless network from a first TRP. The first reference signal corresponds to a QCL RS of the second reference signal. The device receiver determines delay-spread and average-delay information for a path between the first TRP to the device based on the first reference signal. The device receiver further receives a third reference signal from a second TRP that includes Doppler-shift and Doppler-spread information, and corresponds to a QCL RS of a fourth reference signal transmitted from the second TRP or corresponds to the second reference signal transmitted in a SFN manner from the first TRP.

A method and apparatus are provided for wireless communication between a base station and a user equipment (UE). A base station apparatus includes a transceiver; and a processor configured to transmit, to the UE, via the transceiver, a control message configured for the UE, and receive, via the transceiver, a sounding reference signal (SRS) from the UE, based on the control message. The control message indicates a triggering slot offset and an available slot to the UE for the SRS transmission.

Growing community of inventors

San Diego, CA, United States of America

Hoda Shahmohammadian