Unified TCI Management for Single Frequency Network Synchronization
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Solution Overview
Problem
Existing wireless communication systems face challenges in efficiently managing transmission configuration indicators (TCIs) in single frequency networks (SFNs), leading to suboptimal resource allocation and increased communication, power, and network resource consumption.
Innovation Solution
The method involves a user equipment (UE) and a network node that receive and transmit indications of multiple TCI states for groups of channels or reference signals (RSs) within an SFN, allowing for unified TCI management and default beam selection based on dependency between channels or RSs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple separate TCI states are used for different channels or reference signals in an SFN, then the transmission configuration can be optimized for each channel, but the device complexity and management overhead increase
Solution Approach 1:
The patent combines multiple separate TCI state indications into a single unified TCI state indication that simultaneously configures multiple channels and reference signals. This merging approach reduces the number of separate TCI state messages that need to be transmitted and processed, thereby reducing device complexity and management overhead while still allowing different channels to have different transmission configurations through the unified indication mechanism.
2Measurement precision
If separate TCI indications are transmitted for each channel or reference signal, then precise control is achieved, but communication overhead and power consumption increase
Solution Approach 1:
The patent merges multiple separate TCI indication transmissions into a single unified TCI indication message that conveys configuration information for multiple channels and reference signals simultaneously. This reduces the total number of transmission events, thereby lowering power consumption at both the transmitting and receiving ends while maintaining precise control over each individual channel through the unified indication structure.
3Adaptability or versatility
If multiple TCI states are managed separately for different channels, then channel-specific optimization is possible, but synchronization between UE and network node deteriorates
Solution Approach 1:
The patent combines the indication of multiple TCI states into a single unified indication message that is transmitted and processed simultaneously by both the network node and the UE. This unified approach ensures that both parties have consistent knowledge of the TCI configurations for all channels at the same time, improving synchronization and reliability while still allowing channel-specific optimization through the differentiated configuration within the unified structure.
Data Source
AI summary
Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive an indication of a first group of one or more channels or reference signals (RSs) associated with a first transmission configuration indicator (TCI) state and a second group of one or more channels or RSs associated with a second TCI state for use in a single frequency network (SFN). The UE may receive or transmit an RS or a communication via the one or more channels using the first TCI state and the second TCI state in an SFN mode. Numerous other aspects are described.