Common Beam TCI Configuration for Faster Multi-TRP Control
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Solution Overview
Problem
Existing common beam-based beam control techniques in multi-TRP operations suffer from significant beam control delays due to acknowledgement-based beam updates, which are inefficient and slow, especially when terminals are connected to multiple TRPs.
Innovation Solution
A method and device for configuring common beams using transmission configuration indicator (TCI) state information to enable faster beam control and conversion between multiple TRPs, applicable to both single-DCI and multiple-DCI scenarios, allowing for efficient communication management.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If acknowledgement-based beam updates are used in multi-TRP operations, then beam control reliability is improved, but beam control delay increases significantly
Solution Approach 1:
The patent applies preliminary action by pre-configuring TCI state information in the DCI message before beam update is needed. The terminal receives and stores the TCI state information in advance, so when beam update is required, the terminal can immediately apply the pre-configured beam without waiting for acknowledgment, thereby reducing beam control delay while maintaining reliability
Solution Approach 2:
The patent introduces TCI state information as an intermediary element that carries beam configuration data within the DCI message. This intermediary mechanism allows the base station to convey beam update instructions directly to the terminal without requiring traditional acknowledgment-based handshaking, thus resolving the contradiction between reliability and delay
2Device complexity
If common beam-based beam control is implemented in multi-TRP operations, then operation complexity is reduced, but beam control efficiency deteriorates due to acknowledgment-based updates
Solution Approach 1:
The patent merges the beam control command and the beam configuration information into a single DCI message. By combining the TCI state information with the downlink control information, the system achieves both simplified operation (single message processing) and improved efficiency (no separate acknowledgment needed), as the terminal can directly apply the beam configuration from the received DCI
3Adaptability or versatility
If traditional beam update mechanisms are used, then compatibility with existing systems is maintained, but latency in beam conversion increases
Solution Approach 1:
The patent uses copying by incorporating TCI state information that replicates essential beam configuration data directly within the DCI message. This copied information allows the terminal to immediately reconstruct and apply beam settings without waiting for separate acknowledgment messages, reducing latency while maintaining compatibility with existing DCI structures
Data Source
AI summary
The present disclosure relates to a 5G or 6G communication system for supporting higher data transmission rates. The present disclosure relates to a method performed by a terminal in a communication system, the method comprising: receiving, from a base station, first downlink control information including first TCI state information on a first CORESET; determining whether to apply the first TCI state information to PDCCH reception on the basis of the first CORESET; and when it is determined to apply the first TCI state information to the PDCCH reception, receiving, from the base station, DCI on the PDCCH on the basis of the first TCI state information, wherein the first TCI state information corresponds to a common TCI state.