TCI State Activation Across Multiple TRPs With Flexible MAC CE
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing communication systems are limited in their ability to flexibly activate transmission configuration indicator (TCI) states, particularly in scenarios involving multiple transmission and reception points (TRPs), which can hinder efficient communication in advanced systems like D2D, M2M, V2V, and V2X communications.
Innovation Solution
A communication method and device that allows for the flexible activation of multiple sets of TCI states through a TCI state activation command, using a new MAC CE format to support unified TCI states across multiple TRPs, enabling simultaneous activation of DL and UL TCI states for improved communication efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If unified TCI states are activated by a single MAC CE for a single TRP, then the activation process is simple and standardized, but the system cannot flexibly activate TCI states across multiple TRPs simultaneously
Solution Approach 1:
The patent segments the TCI state activation process by introducing multiple MAC CE formats (first MAC CE for first TRP, second MAC CE for second TRP) instead of using a single unified MAC CE for all TRPs. This segmentation allows independent configuration and activation of TCI states for each TRP, achieving flexibility across multiple TRPs while maintaining manageable complexity through standardized individual MAC CE structures.
Solution Approach 2:
The patent makes each MAC CE format universal by enabling them to activate TCI states for multiple TRPs simultaneously. Each MAC CE is designed to contain indication information that can refer to multiple TCI state sets, allowing a single MAC CE to serve multiple TRPs. This multi-functionality approach achieves system-wide flexibility without requiring separate dedicated MAC CEs for each TRP, thereby controlling overall system complexity.
2Productivity
If multiple sets of TCI states are activated simultaneously for multiple TRPs, then communication efficiency in advanced scenarios is improved, but the signaling overhead and processing complexity increase
Solution Approach 1:
The patent merges the activation of multiple TCI state sets into a single MAC CE structure by allowing the MAC CE to contain indication information that simultaneously refers to multiple TCI state sets for different TRPs. This merging approach enables simultaneous activation of TCI states for multiple TRPs in one signaling message, improving communication efficiency in advanced scenarios while avoiding the need for multiple separate signaling messages that would increase overhead.
Solution Approach 2:
The patent changes the parameter structure of the MAC CE by introducing flexible indication fields that can dynamically specify which TCI state sets are being activated. Instead of using fixed separate fields for each TRP, the patent uses parameter-changing mechanisms where the same MAC CE can adaptively indicate different TCI state combinations based on the actual communication scenario, thereby reducing signaling overhead while maintaining the ability to activate multiple TCI states simultaneously.
3Adaptability or versatility
If a single MAC CE format is used for TCI state activation, then implementation is standardized and simple, but the system lacks flexibility to support multiple TRP scenarios
Solution Approach 1:
The patent creates a universal MAC CE format that can handle multiple TRP scenarios by designing the indication information field to be flexible and adaptable. The same basic MAC CE structure can refer to different TCI state sets for different TRPs depending on how the indication information is interpreted, eliminating the need for multiple specialized MAC CE formats while maintaining implementation simplicity through a single standardized structure.
Solution Approach 2:
The patent introduces dynamic interpretability to the MAC CE format by making the indication information field configurable and adaptable to different scenarios. Instead of a static fixed structure, the MAC CE can dynamically adjust its meaning based on the communication context, allowing a single format to support both single-TRP and multi-TRP scenarios. This dynamic approach maintains implementation simplicity while achieving the flexibility needed for multiple TRP support.
Data Source
Figure 1
Figure 2~3
Figure 4~5
AI summary
The present disclosure relates to a communication method and a communication device. The method includes the following. A first communication device receives a transmission configuration indicator (TCI) state activation command, where the TCI state activation command indicates one or more sets of TCI states. In the embodiments, TCI states can be flexibly activated via a TCI state activation command.