TRP Selection via Uplink Channel Quality in Multi-TRP Wireless Systems
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Solution Overview
Problem
In wireless communication systems, existing technologies face challenges in efficiently managing signal transmission and reception between terminals and base stations with multiple transmission and reception points (TRPs), particularly in selecting the optimal TRP for communication and handling varying channel quality measurements.
Innovation Solution
A method is introduced where a base station transmits resource allocation information for uplink channel quality measurement, receives and measures the uplink signal from multiple TRPs, selects the best TRP for signal transmission and reception based on measured quality, and communicates this selection to the terminal, using techniques such as sounding reference signals and timing advance commands.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple TRPs are used for signal transmission and reception, then communication reliability and capacity are improved, but device complexity and resource management difficulty increase
Solution Approach 1:
The base station is divided into multiple Transmission and Reception Points (TRPs), where each TRP operates as an independent functional unit with its own transmission and reception capabilities. This segmentation allows the system to achieve diversity gain and reliability improvement while keeping each individual TRP's complexity manageable.
Solution Approach 2:
Instead of having each TRP independently make decisions about resource allocation and channel quality assessment, the patent inverts the control structure by introducing a central controller that coordinates all TRPs. This centralization reduces overall system complexity while maintaining the reliability benefits of multiple TRPs.
2Measurement precision
If uplink channel quality measurement is performed for multiple TRPs, then TRP selection accuracy is improved, but measurement overhead and resource consumption increase
Solution Approach 1:
The patent makes the uplink signal serve multiple functions simultaneously: it is used for both data transmission and for channel quality measurement across multiple TRPs. By configuring the terminal to transmit uplink signals on specific resources that are monitored by multiple TRPs, the system achieves accurate channel quality assessment without requiring separate dedicated measurement signals for each TRP.
Solution Approach 2:
The patent implements a selective measurement approach where not all TRPs perform full channel quality measurements on all uplink signals. Instead, the central controller configures which TRPs should measure which signals based on current system conditions, reducing redundant measurements while maintaining sufficient measurement accuracy for effective TRP selection.
3Productivity
If TRP selection is performed dynamically based on channel quality, then communication efficiency is improved, but processing complexity and decision-making difficulty increase
Solution Approach 1:
The patent implements a feedback mechanism where channel quality measurements from multiple TRPs are continuously collected and reported to a central controller. The controller uses this feedback information to dynamically determine the optimal TRP for signal transmission, balancing communication efficiency with manageable processing complexity through systematic decision-making algorithms.
Solution Approach 2:
The patent introduces a central controller as an intermediary between the multiple TRPs and the terminal. This intermediary collects channel quality information from all TRPs, performs the complex TRP selection decision-making process, and then coordinates the selected TRP's actions. This intermediary structure simplifies the overall system architecture by centralizing the complex decision-making function.
Data Source
AI summary
The present invention provides a method for a terminal and a base station including multiple TRPs to transmit/receive signals, and a device therefor. More particularly, the present invention provides a method whereby, if one or more base stations are present, and multiple TRPs are present in each of the base stations, a TRP for signal transmission/reception by a terminal and a base station is selected by using an uplink signal transmitted by the terminal, and a signal is transmitted/received based on the TRP. The present invention also provides a device for the method.