Joint TCI State Indication for Multi-Beam NR Transmission
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Solution Overview
Problem
Existing wireless communication systems face challenges in efficiently managing transmission configuration indicators (TCIs) due to the complexity of multi-beam operations in New Radio (NR) networks, leading to suboptimal performance and increased latency in data transmission.
Innovation Solution
Implementing a mechanism for joint TCI state indication across multiple beams using a unified DCI field, allowing for coordinated management of TCIs to enhance beam management and reduce latency in NR networks.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If separate TCI indication mechanisms are used for each beam, then beam management flexibility is maintained, but system complexity and latency increase
Solution Approach 1:
The patent combines multiple separate TCI indication mechanisms into a unified joint TCI indication mechanism that manages multiple beams simultaneously. This merging approach reduces system complexity and latency while maintaining the flexibility to manage multiple beams through a single coordinated mechanism rather than separate independent mechanisms for each beam.
Solution Approach 2:
The joint TCI indication mechanism is designed to serve multiple beams universally through a single mechanism. This multi-functional approach allows the system to manage different beams with different characteristics using one unified indication system, reducing overall system complexity while preserving adaptability through configurable beam-specific parameters within the universal framework.
2Ease of operation
If separate TCI indication mechanisms are used for each beam, then individual beam control is maintained, but transmission latency increases
Solution Approach 1:
The patent merges multiple separate TCI indication mechanisms into a single joint indication mechanism that simultaneously manages multiple beams. This combination eliminates the sequential processing delays inherent in separate mechanisms, reducing transmission latency while maintaining individual beam control capabilities through configurable parameters within the unified mechanism.
Solution Approach 2:
The joint TCI indication mechanism performs preliminary configuration of multiple beams in advance through a single coordinated indication, rather than sequentially configuring each beam separately. This preliminary action approach allows the system to prepare multiple beam configurations simultaneously, reducing the time required for beam management operations.
3Productivity
If coordinated TCI management is implemented, then beam management efficiency improves, but implementation complexity increases
Solution Approach 1:
The patent implements coordinated TCI management by merging multiple indication mechanisms into a unified joint indication system. This merging improves beam management efficiency by enabling simultaneous coordination of multiple beams through a single mechanism, while the standardized unified structure actually reduces implementation complexity compared to managing multiple separate mechanisms.
Data Source
AI summary
A wireless device receives, from a base station, one or more messages indicating a transmission configuration indicator (TCI) indication type among a first TCI indication type and a second TCI indication type. The first TCI indication type indicates one or more first TCI states are for downlink receptions and one or more second TCI states are for uplink transmissions. The second TCI indication type indicates one or more third TCI states are for both uplink transmissions and downlink receptions. The wireless device receives a first downlink control information (DCI) comprising a TCI field indicating a TCI state, of the one or more third TCI states, applicable to both uplink transmissions and downlink receptions. The wireless device receives downlink receptions based on the TCI state. The wireless device transmits uplink transmissions based on the TCI state.