18836518. CROSS-CARRIER RACH TRANSMISSIONS FOR INTER-BAND CARRIER AGGREGATION WITH SSB-LESS CARRIERS (QUALCOMM Incorporated)

CROSS-CARRIER RACH TRANSMISSIONS FOR INTER-BAND CARRIER AGGREGATION WITH SSB-LESS CARRIERS

Organization Name

QUALCOMM Incorporated

Inventor(s)

Hung Dinh Ly of San Diego CA US

Kexin Xiao of Shanghai CN

CROSS-CARRIER RACH TRANSMISSIONS FOR INTER-BAND CARRIER AGGREGATION WITH SSB-LESS CARRIERS

This abstract first appeared for US patent application 18836518 titled 'CROSS-CARRIER RACH TRANSMISSIONS FOR INTER-BAND CARRIER AGGREGATION WITH SSB-LESS CARRIERS

Original Abstract Submitted

Methods, systems, and devices for wireless communications are described. A user equipment (UE) may receive a first message that indicates an inter-band carrier aggregation configuration. The inter-band carrier aggregation configuration may identify a set of carriers for carrier aggregation communication between the UE and a network entity. The UE may receive a second message that indicates a random access procedure configuration. The random access procedure configuration may include a rule pertaining to whether RACH messages may be transmitted over multiple carriers, a mapping of multiple of RACH occasions to at least one SSB index, and a repetition number that indicates a quantity of RACH message repetitions for transmission by the UE. The UE may transmit the quantity of RACH message repetitions based on the mapping. The quantity of RACH messages may be transmitted over one carrier or over the multiple carriers of the set of carriers based on the rule.