US Patent Application 18337567. Default PUCCH and SRS Beam Determination simplified abstract

Default PUCCH and SRS Beam Determination

Organization Name

Apple Inc.

Inventor(s)

Yushu Zhang of Beijing (CN)

Chunhai Yao of Beijing (CN)

Chunxuan Ye of San Diego CA (US)

Dawei Zhang of Saratoga CA (US)

Fangli Xu of Beijing (CN)

Haijing Hu of Los Gatos CA (US)

Haitong Sun of Saratoga CA (US)

Hong He of San Jose CA (US)

Jie Cui of San Jose CA (US)

Oghenekome Oteri of San Diego CA (US)

Wei Zeng of Saratoga CA (US)

Weidong Yang of San Diego CA (US)

Yang Tang of San Jose CA (US)

Yuchul Kim of San Jose CA (US)

Yuqin Chen of Shenzhen (CN)

Default PUCCH and SRS Beam Determination - A simplified explanation of the abstract

This abstract first appeared for US patent application 18337567 titled 'Default PUCCH and SRS Beam Determination

Simplified Explanation

The patent application describes apparatuses, systems, and methods for a user equipment device (UE) to determine a default beam for a dedicated PUCCH/SRS in a CC (cell center).

• The UE determines if a pathloss RS (reference signal) has been configured in the CC.
• If spatial relationship information for a default transmission beam has not been configured, the UE determines the default beam for transmissions based on the configured pathloss RS.
• If the pathloss RS has not been configured in the CC, the UE checks if CORESETs/TCI states for a PDSCH (physical downlink shared channel) in the CC have been configured.
• The UE determines the default beam for transmissions based on a default transmission beam in another CC, a CC index, a PRACH (physical random access channel) procedure, a PUSCH (physical uplink shared channel) transmission, an SRS (sounding reference signal) transmission, and/or a PUCCH (physical uplink control channel) transmission.

Original Abstract Submitted

Apparatuses, systems, and methods for a user equipment device (UE) to determine a default beam for a dedicated PUCCH/SRS in a CC. The UE may determine a pathloss RS has been configured in the CC, e.g., responsive to the UE determining that spatial relationship information for a default transmission beam has not been configured and determine the default beam for transmissions based, at least in part, on the (configured) pathloss RS. Additionally, responsive to determining that the pathloss RS has not been configured in the CC, the UE may determine that no CORESETs/TCI states for a PDSCH in the CC have been configured and determine the default beam for transmissions based, at least in part, on a default transmission beam in another CC, a CC index, a PRACH procedure; a PUSCH transmission; an SRS transmission, and/or a PUCCH transmission.