5G Terminal TRP Change via Segmented Reference Signal Measurement
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Solution Overview
Problem
In wireless communication systems, particularly in 5G environments, the existing methods for measuring and changing transmission and reception points with different protocol structures are inefficient, leading to prolonged measurement times and increased latency due to the need to synchronize multiple beams and points.
Innovation Solution
A method for a terminal to measure reference signals from multiple transmission and reception points, report the measurements back to the base station, and change configurations efficiently, while the base station allocates unique beam and transmission resources and shares resource information, allowing for simultaneous measurement and reporting across multiple points.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the terminal measures reference signals from multiple transmission and reception points with different protocol structures, then the system can support flexible TRP changes and improve adaptability, but the measurement time increases and latency increases due to synchronization requirements
Solution Approach 1:
The patent segments the measurement process into separate measurement phases for different TRPs. The terminal measures reference signals from multiple TRPs in distinct time intervals rather than simultaneously, allowing the base station to control the measurement timing and reduce overall measurement time while maintaining the ability to measure multiple TRPs with different protocol structures.
Solution Approach 2:
The base station configures and schedules the measurement timing in advance before the actual measurement occurs. The terminal is provided with configuration information indicating when to measure reference signals from different TRPs, allowing the terminal to perform measurements efficiently without waiting for real-time synchronization signals from all TRPs simultaneously.
2Loss of time
If the terminal measures reference signals from multiple transmission and reception points simultaneously, then the measurement process can be completed faster, but the terminal cannot properly distinguish between different protocol structures of each TRP
Solution Approach 1:
The patent divides the measurement process into separate time intervals where the terminal measures reference signals from different TRPs sequentially. This temporal segmentation allows the terminal to distinguish between different protocol structures of each TRP by measuring them at different times, while the base station controls the overall measurement duration through configured timing information.
3Productivity
If the base station transmits resource configuration information for multiple TRPs simultaneously, then the terminal can receive all configuration data at once, but the terminal cannot properly measure and report reference signals from each TRP with different protocol structures
Solution Approach 1:
The patent segments the reference signal transmission and measurement process into separate time intervals for each TRP. The base station transmits resource configuration information for multiple TRPs, but the actual reference signal measurements are performed sequentially at different times. This allows the terminal to receive all configuration data efficiently while measuring each TRP's reference signal at its designated time interval, maintaining measurement accuracy.
Solution Approach 2:
The base station provides the terminal with resource configuration information in advance, including timing information for when to measure reference signals from different TRPs. This preliminary configuration allows the terminal to understand the measurement schedule before actual measurement occurs, enabling accurate measurement of each TRP's reference signal at the correct time interval.
Data Source
AI summary
The disclosure relates to a communication technique for convergence of an IoT technology and a 5G communication system for supporting a higher data transmission rate beyond a 4G system, and a system therefor. The disclosure can be applied to an intelligent service (for example, a smart home, a smart building, a smart city, a smart cart or connected car, health care, digital education, retail business, security and safety-related service, etc.) on the basis of a 5G communication technology and an IoT-related technology. The disclosure defines a mobility method for a terminal residing in a system in which transmission/reception points (TPRs), supporting solely some protocols among entire access stratum protocols comprising PHY, MAC, RLC, PDCP, and RRC, coexist in a wireless communication system. Specifically, the disclosure defines a method for dynamically changing, depending on determination by a base station, a beam and a transmission/reception point to be used for transmitting information to or receiving information from a terminal through a method in which a system using multiple beams notifies, in advance, of a measurement reference signal transmitted using transmission/reception points of different networks, to allow a terminal to select a required reception beam from a corresponding resource and measure beam information of each transmission/reception point, or a terminal transmits measured information as feedback in which each transmission/reception point is specified. Accordingly, the disclosure can provide a criterion of rapid and highly precise determination for changing a beam and a transmission/reception point and thus prevent a terminal from needlessly measuring and reporting, so as to achieve an effect of reduction in the power consumption of the terminal and reduction of delay in change of a transmission/reception point.