Dynamic TCI State Masking and Unmasking for 5G Networks
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing communication systems face inefficiencies in managing transmission configuration indicators (TCI states) due to inadequate handling of masking and unmasking processes, leading to suboptimal resource allocation and increased latency.
Innovation Solution
An apparatus and method for dynamically controlling transmission configuration indicators (TCI states) by masking and unmasking them based on downlink control information, medium access control elements, or radio resource control signaling, allowing flexible and efficient use of communication resources.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If TCI states are continuously monitored and updated, then transmission reliability is improved, but processing complexity and latency increase
Solution Approach 1:
The system pre-configures multiple TCI states and their associated configurations before transmission occurs. The network node prepares a set of candidate TCI states with different configurations (e.g., different QCL assumptions, beam directions) in advance, so that during actual transmission, the UE can quickly select from pre-prepared options rather than processing configurations in real-time, thus improving reliability while reducing processing complexity.
Solution Approach 2:
The patent implements dynamic TCI state selection where the network can indicate to the UE which pre-configured TCI state to use for different PDSCH receptions. This dynamic indication allows the system to adapt to changing channel conditions and interference patterns while keeping the actual configuration processing simple, as the UE only needs to retrieve and apply the indicated pre-configured state rather than processing new configurations dynamically.
2Adaptability or versatility
If multiple TCI states are configured for different transmission scenarios, then adaptability is improved, but device complexity increases
Solution Approach 1:
The patent segments the TCI configuration into multiple independent, pre-configured states, each optimized for specific transmission scenarios (e.g., different beam directions, different QCL assumptions for different channels). Instead of having a single complex configuration that tries to handle all scenarios, the system divides the configuration space into discrete, manageable TCI states that can be independently selected based on the current transmission needs, thus improving adaptability while keeping individual configuration elements simple.
Solution Approach 2:
Each pre-configured TCI state is designed to be universally applicable to multiple transmission scenarios and channel types. The TCI states are configured with generic parameters that can be applied to PDSCH, PDCCH, and other channels, allowing a single TCI configuration to serve multiple functions across different transmission scenarios, thereby reducing overall configuration complexity while maintaining high adaptability.
3Productivity
If TCI state changes are applied immediately, then transmission efficiency is improved, but error propagation risk increases
Solution Approach 1:
The system applies TCI state changes based on pre-configured states that have already been validated and approved by the network. Rather than allowing immediate arbitrary changes that could propagate errors, the UE retrieves TCI states that were pre-configured and approved by the network, ensuring that any state change has already been vetted for correctness, thus maintaining transmission efficiency while reducing error propagation risk.
Solution Approach 2:
The patent implements feedback mechanisms where the network monitors TCI state applications and can provide corrections or confirmations. When the UE applies a TCI state change, the network can verify whether the change was appropriate and provide feedback through subsequent downlink control information, allowing the system to correct potential errors before they propagate further, thus balancing transmission efficiency with error prevention.
Data Source
Figure 1
Figure 2
Figure 3
AI summary
An apparatus comprises means configured to: receive information indicating that one or more of a plurality of indicators is to be changed from one of masked and unmasked to the other of masked and unmasked, wherein: the one or more indicators comprise one or more transmission configuration indicators; when an indicator of the plurality of indicators is masked, configuration associated with the respective indicator is not used; and when an indicator of the plurality of indicators is unmasked, configuration associated with the respective indicator is usable.