Dynamic Reference Signal Configuration for Wireless Systems
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Solution Overview
Problem
Existing wireless communication systems have inflexible reference signal configurations, where each physical channel requires a corresponding reference signal occupying a fixed time domain resource, leading to poor flexibility in resource allocation.
Innovation Solution
A method where a terminal device receives physical layer signaling with configuration information to dynamically determine the time domain resource of a reference signal, allowing the reference signal to be positioned differently within a transmission time interval (TTI) or subframe, enabling flexible configuration and sharing of reference signals across multiple physical channels.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If each physical channel has a corresponding reference signal occupying a fixed time domain resource, then channel estimation can be performed, but reference signal configuration has poor flexibility
Solution Approach 1:
The patent applies dynamics by transitioning from fixed time domain resource allocation to dynamic configuration. The network device can now dynamically adjust the time domain resource of the reference signal based on actual transmission needs, allowing flexibility in resource allocation while maintaining reliable channel estimation through configurable reference signal positioning.
Solution Approach 2:
The patent changes the parameter of time domain resource configuration from fixed to variable. By allowing the time domain resource to be dynamically configured based on physical channel requirements, the system achieves both reliable channel estimation and flexible reference signal configuration, resolving the contradiction between these two requirements.
2Productivity
If a single reference signal is used for multiple physical channels, then resource utilization improves, but channel estimation accuracy may be affected
Solution Approach 1:
The patent applies universality by enabling a single reference signal to serve multiple physical channels. The network device can configure one reference signal to be shared across multiple physical channels, improving resource utilization efficiency while maintaining adequate channel estimation accuracy through proper configuration of the reference signal's time domain resource.
Solution Approach 2:
The patent changes the configuration parameter to allow one reference signal to serve multiple physical channels. By dynamically adjusting the time domain resource parameter, the system achieves better resource utilization while maintaining channel estimation accuracy through optimized reference signal positioning relative to each physical channel.
Data Source
AI summary
The present disclosure relates to a reference signal transmission method. In one example method, physical layer signaling is received by a terminal device. The physical layer signaling includes configuration information. The configuration information indicates a time domain resource of a reference signal. The time domain resource of the reference signal is determined by the terminal device according to the configuration information. The reference signal and a first physical channel is sent by the terminal device. The reference signal is used for demodulation of the first physical channel.