Techniques for cross-component carrier scheduling of joint downlink and uplink transmission configuration indicator states

The implementation of a joint downlink-uplink TCI state in wireless communication systems addresses inefficiencies by enabling coordinated scheduling across multiple component carriers and TRPs, reducing processing time and network overhead through common beam communication.

JP7828345B2Active Publication Date: 2026-03-11QUALCOMM INC
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Patent Information

Authority / Receiving Office
JP · JP
Patent Type
Patents
Current Assignee / Owner
Filing Date
2021-11-01
Publication Date
2026-03-11

AI Technical Summary

Technical Problem

Existing wireless communication systems face inefficiencies in scheduling joint downlink and uplink transmission configuration indicator (TCI) states across multiple component carriers and transmit receiving points (TRPs), leading to increased processing time and network overhead due to separate TCI states for uplink and downlink communications.

Method used

Implementing a joint downlink-uplink TCI state that allows user equipment (UE) to communicate using a common beam across multiple component carriers and TRPs, facilitated by control signaling that includes a joint TCI state identifier or scheduling request indicator (SRI) to coordinate downlink and uplink transmissions.

Benefits of technology

Enables efficient communication by reducing processing time and network overhead through coordinated scheduling of downlink and uplink transmissions using a common beam, enhancing communication efficiency across multiple carriers and TRPs.

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Abstract

A method, system, and device for wireless communications are described. A user equipment (UE) may receive control signaling including scheduling information. The scheduling information may include an indication of a joint downlink / uplink transmission configuration indicator (TCI) state for a common beam. The UE may apply a joint downlink / uplink TCI state on a component carrier to activate the common beam to transmit one or more uplink transmissions at the UE or to receive one or more downlink transmissions. The UE may schedule communications with a base station, one or more transmit reception points (TRPs), or both, using the common beam across the component carrier. The communications may include transmitting at least one uplink transmission during one or more uplink resources indicated in the scheduling information and receiving at least one downlink transmission during one or more downlink resources indicated in the scheduling information.
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Citation Information

Patent Citations

  • Terminal, radio communication method, and base station

    WO2022079902A1