Differential Control Information for Multi-Beam Wireless Communication
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Solution Overview
Problem
Current wireless communication systems using multi-beam operation are limited by the constraint of using the same configuration for all beams, which can result in reduced throughput due to suboptimal modulation and coding schemes, as they prioritize receiving signals on lower quality beams over higher quality ones.
Innovation Solution
Implementing differential control information for multi-beam operation by allowing base stations to transmit different configurations for downlink and uplink transmissions based on transmission configuration indication states, using baseline configurations and deltas to optimize modulation and coding schemes for each beam, and dynamically adjusting timing advances for uplink transmissions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the same configuration is used for all beams in multi-beam operation, then device complexity is reduced and ease of operation is improved, but throughput is reduced due to suboptimal modulation and coding schemes
Solution Approach 1:
The patent applies local quality by allowing different configuration parameters (such as modulation and coding schemes, timing advances) to be applied to different beams based on their individual qualities. High-quality beams can use more aggressive configurations while lower-quality beams use more conservative settings, optimizing overall throughput without requiring uniform configuration across all beams.
Solution Approach 2:
The patent segments the configuration parameters into separate controllable elements for each beam. Instead of a single unified configuration, the system divides configurations into beam-specific parameters that can be independently adjusted, allowing the base station to optimize each beam's parameters according to channel conditions and beam quality.
2Productivity
If different configurations are used for each beam, then throughput is improved by optimizing modulation and coding schemes, but device complexity increases
Solution Approach 1:
The patent implements dynamics by allowing configuration parameters to change dynamically based on beam quality assessments. The base station can adjust modulation and coding schemes, timing advances, and other parameters in real-time according to channel conditions, enabling the system to adapt to varying beam qualities without requiring static pre-configuration for each beam.
Solution Approach 2:
The patent utilizes parameter changes by modifying configuration parameters such as modulation order, coding rate, and timing advance values based on measured beam qualities. The system changes these parameters dynamically to match the quality of each beam, allowing high-quality beams to use higher-order modulation and lower coding rates for improved throughput while maintaining reliability on lower-quality beams.
3Reliability
If suboptimal modulation and coding schemes are used to accommodate lower quality beams, then reliability is improved for all beams, but throughput is reduced on higher quality beams
Solution Approach 1:
The patent applies local quality by matching modulation and coding scheme parameters to the specific quality of each beam. High-quality beams receive configurations with higher modulation orders and more efficient coding schemes that maximize throughput, while lower-quality beams receive more robust configurations that prioritize reliable reception. This localized optimization ensures each beam operates at its optimal performance point without being constrained by the requirements of other beams.
Data Source
AI summary
Methods, systems, and devices for wireless communication are described. Generally, the described techniques provide for using different configurations for downlink or uplink transmissions associated with different transmission configuration indication (TCI) states (e.g., transmitted on different beams). In one example, a base station may use different configurations for downlink transmissions to a user equipment (UE), and the base station may indicate the different configurations to the UE. For instance, the base station may transmit downlink control information (DCI) indicating a baseline configuration and other configurations as a delta of the baseline configuration. In another example, a base station may dynamically indicate a timing advance to a UE (e.g., in DCI or flow control feedback) for an uplink transmission from the UE associated with a TCI state, and the UE may use the dynamically indicated timing advance for uplink transmissions associated with the TCI state.