Adaptive MRS Transmission Mode Selection for 5G Mobility
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Solution Overview
Problem
Current wireless communication systems face significant signaling overhead and latency issues during beam switch procedures in 5G networks, particularly due to excessive MRS transmission and measurement reporting, which can impact mobility performance and user experience, especially in high-traffic scenarios.
Innovation Solution
Implementing a method that dynamically selects transmission modes based on factors like traffic load, moving speed, and latency requirements, using predefined modes such as periodical and on-demand transmission modes, to optimize MRS transmission and reduce unnecessary signaling, thereby improving mobility performance and reducing overhead.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If MRS transmission is performed frequently to improve mobility measurement accuracy, then measurement precision is improved, but signaling overhead increases
Solution Approach 1:
The patent applies dynamics by making the MRS transmission mode adjustable and adaptable based on device conditions. The access node determines whether to use periodical or on-demand MRS transmission based on device moving speed and other factors, allowing the system to dynamically optimize between measurement accuracy and signaling overhead rather than using a fixed transmission approach
Solution Approach 2:
The patent changes the transmission parameters of MRS based on device characteristics. Specifically, it adjusts the MRS transmission mode (periodical vs. on-demand) and transmission timing according to device moving speed, creating conditions for fast mobility versus normal mobility, thereby optimizing the balance between measurement precision and signaling overhead
2Speed
If MRS transmission is performed continuously to reduce latency in mobility procedures, then speed of mobility procedure is improved, but use of energy increases
Solution Approach 1:
The system dynamically adjusts MRS transmission based on device moving speed. For devices with low moving speed, on-demand MRS transmission is used which reduces energy consumption by only transmitting reference signals when needed. For devices with high moving speed, periodical MRS transmission is used to ensure timely mobility measurements, thus optimizing energy efficiency while maintaining mobility procedure speed
Solution Approach 2:
The patent implements periodic MRS transmission as one of the transmission modes. Instead of continuous transmission, MRS is transmitted at periodic intervals which reduces energy consumption while still providing sufficient measurement opportunities for mobility procedures, especially for devices with lower mobility requirements
3Adaptability or versatility
If multiple transmission modes are supported to improve adaptability, then adaptability is improved, but device complexity increases
Solution Approach 1:
The patent segments the transmission modes into two distinct types: periodical MRS transmission and on-demand MRS transmission. This segmentation allows the system to support multiple transmission modes without excessive complexity, as each mode has clear definition and specific application scenarios based on device moving speed and mobility requirements
Solution Approach 2:
The access node automatically determines the appropriate MRS transmission mode based on device moving speed and other parameters without requiring complex manual configuration. The system self-adjusts the transmission mode to match device conditions, reducing the operational complexity while maintaining high adaptability
Data Source
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AI summary
Embodiments of the present disclosure provide a method implemented by an access node in a wireless communication system for beam switch, comprising: selecting a transmission mode from a set of predefined transmission modes; transmitting a reference signal to a device according to the selected transmission mode; signaling the selected transmission mode to the device; and receiving, from the device, a mobility measurement report based on the reference signal. By virtue of this method, the signaling overhead for reference signal configuration can be reduced.