Flexible Beam Configurations for 5G Multi-TRP Deployments
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current 5G radio systems face inefficiencies in multi-TRP deployments due to the requirement for all TRPs to use the same beam sweeping configuration, leading to unnecessary beam inactivity and reduced data transmission capabilities during beam sweeping subframes.
Innovation Solution
Implementing a system where each TRP can have a unique beam sweeping configuration, allowing for simultaneous transmission of synchronization signals and data during sweeping subframes, and enabling TRPs to transmit control information and data even when not actively sweeping beam reference signals.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If all TRPs use the same beam sweeping configuration, then beam reference signals can be transmitted systematically, but data transmission capabilities are reduced during beam sweeping subframes and unnecessary beam inactivity occurs
Solution Approach 1:
The patent divides the beam sweeping configuration into separate, independent parameters for each TRP (sweeping duration, starting block, active blocks) rather than using a unified configuration. This segmentation allows each TRP to operate with optimized parameters without interfering with others, resolving the contradiction by enabling simultaneous data transmission while maintaining systematic beam reference signal transmission.
Solution Approach 2:
The patent introduces dynamic configuration where TRPs can have different sweeping durations and starting positions based on their specific operational needs. This dynamic approach allows the system to adapt beam sweeping patterns to maximize data transmission opportunities while maintaining coordination, thereby improving productivity without excessive complexity.
2Measurement precision
If TRPs transmit beam reference signals simultaneously, then user equipment detection is improved, but data transmission opportunities are lost during sweeping subframes
Solution Approach 1:
The patent implements periodic beam sweeping where each TRP transmits beam reference signals at different intervals and positions within the sweeping subframe. This periodic action ensures that beam reference signals are transmitted systematically for accurate UE detection while creating time slots where data transmission can occur, resolving the contradiction between detection precision and transmission efficiency.
Solution Approach 2:
The patent enables continuous useful action by allowing TRPs to transmit data during periods when they are not actively sweeping beam reference signals. Through coordinated sweeping configurations, the system maintains continuous data transmission opportunities while ensuring beam reference signals are transmitted at appropriate intervals for UE detection, thus eliminating idle periods.
3Adaptability or versatility
If a unified beam sweeping configuration is used for all TRPs, then system coordination is simplified, but deployment flexibility for diverse scenarios is reduced
Solution Approach 1:
The patent applies local quality by allowing each TRP to have customized beam sweeping parameters (different sweeping durations, starting blocks, and active block configurations) tailored to their specific deployment scenarios. This enables diverse deployment flexibility while maintaining a unified framework for coordination, resolving the contradiction between adaptability and ease of operation.
Solution Approach 2:
The patent enables parameter changes in beam sweeping configurations for different TRPs based on deployment requirements. By allowing variable sweeping durations, starting positions, and active block assignments, the system can adapt to diverse deployment scenarios while providing clear configuration guidelines that maintain ease of operation through standardized parameter modification approaches.
Data Source
Figure 1~2
Figure 3~4
Figure 5A~5B
AI summary
The described invention relates to wireless communications, and more particularly to multi- beam downlink transmissions on a sweeping subframe such as for example may be deployed in 5G radio access technology (RAT) systems being developed to operate in the millimeter-wave (mmWave) spectrum. A method comprises signaling downlink a beam configuration for each of a plurality of antenna ports of a plurality of transmit-receive points (TRPs) operating in a cell. Within a beam sweeping period defined by the signaled beam configurations, the method also comprises transmitting beam reference signals (BRSs) from the respective antenna ports of the respective TRPs according to the respective beam configurations. In addition, the method comprises transmitting at least one of other control signalling and data from one or more of the antenna ports while at least one other of the antenna ports is transmitting its respective BRS.