Multiple Data Scheduling With DCI-Based TCI Selection
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing wireless communication systems face challenges in efficiently managing transmission configuration indication (TCI) states for both uplink and downlink transmissions, leading to suboptimal performance in 4G and 5G networks.
Innovation Solution
A method for a wireless device to receive RRC messages with configuration parameters for TCI states, process DCI indicating multiple TCI states, and apply these states for PDSCH reception based on specific bit values, enabling flexible and efficient TCI state application.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple TCI states are configured for both uplink and downlink transmissions, then the adaptability and versatility of transmission configuration is improved, but the device complexity and configuration overhead increases
Solution Approach 1:
The patent applies universality by enabling the same TCI state configuration mechanism to serve both uplink and downlink transmissions. The base station configures a unified set of TCI states that can be selectively applied to different transmission directions (uplink or downlink) based on the specific transmission requirements, thereby achieving multi-functionality with a single configuration system.
Solution Approach 2:
The patent implements dynamics through the use of DCI-based dynamic selection and indication of TCI states. Instead of static configuration, the system allows real-time switching between different TCI states for both uplink and downlink transmissions based on current channel conditions and traffic requirements. The dynamic indication mechanism enables flexible adaptation without requiring complex reconfiguration procedures.
2Productivity
If dynamic TCI state indication is implemented through DCI, then the productivity and response time of transmission adaptation is improved, but the device complexity increases
Solution Approach 1:
The patent applies preliminary action by pre-configuring multiple TCI states through RRC signaling before actual transmission occurs. The base station prepares a set of candidate TCI states with different configuration parameters in advance, so that when transmission needs to adapt to changing conditions, the wireless device can quickly select from the pre-prepared options rather than configuring parameters in real-time, thus achieving fast adaptation with reduced processing complexity.
Solution Approach 2:
The patent uses DCI as an intermediary mechanism between the pre-configured TCI states and the actual transmission parameters. The DCI contains compact indications that reference the pre-configured TCI states, acting as a mediator that triggers the application of appropriate configurations without requiring the full configuration data to be transmitted again. This intermediary approach reduces signaling overhead while enabling rapid adaptation.
3Measurement precision
If separate TCI states are configured for uplink and downlink, then the measurement precision and transmission optimization is improved, but the loss of information and signaling overhead increases
Solution Approach 1:
The patent merges the TCI state configuration for uplink and downlink into a unified configuration framework. Instead of maintaining completely separate configuration sets for uplink and downlink, the system combines them into a single TCI state configuration that can be applied to both directions. This merging reduces the total number of configuration parameters and signaling messages required, while still allowing direction-specific optimization when needed through selective application of TCI states.
Data Source
Figure 1A~1B
Figure 2A~2B
Figure 3
AI summary
A method for multiple data scheduling may include receiving, by a wireless device, downlink control information (DCI) scheduling reception of a transport block. In an example, the DCI may include a transmission configuration indicator (TCI) field indicating a first TCI state and a second TCI state; and a field comprising bits indicating one of a first value, a second value, or a third value. The first value may indicate the first TCI state for the reception of the transport block. The second value may indicate the second TCI state for the reception of the transport block. The third value may indicate the first TCI state and the second TCI state for the reception of the transport block. The method may also include receiving the transport block based on the bits of the field.