NR-SL Terminal Reference Signal Sequence Generation
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Solution Overview
Problem
The sequence, mapping, configuration, and indication of reference signals in NR-SL (New Radio - Sidelink) are not clearly specified, which hinders effective direct communication between terminals in NR-SL systems.
Innovation Solution
A terminal is configured to generate and transmit a sequence of reference signals for channel state information, similar to those used between a base station and a terminal, to another terminal, specifying the sequence, mapping, and configuration of CSI-RS (Channel State Information Reference Signal) and DM-RS (Demodulation Reference Signal) for sidelink communication.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If reference signals are not clearly specified in NR-SL, then implementation flexibility is maintained, but communication effectiveness and reliability deteriorate
Solution Approach 1:
The patent applies universality by reusing the established CSI-RS and DM-RS reference signal sequences, mapping rules, and configuration methods from base station-terminal communication for sidelink terminal-terminal communication. This allows the same reference signal mechanisms to serve multiple purposes (both downlink and sidelink communications), improving reliability through proven designs while avoiding the complexity of creating entirely new specifications.
Solution Approach 2:
The patent employs copying by directly adopting the sequence generation methods, mapping patterns, and configuration procedures of CSI-RS and DM-RS from traditional cellular communication into sidelink communication. This copying approach ensures consistent behavior across different communication scenarios while reducing specification complexity by leveraging existing standardized mechanisms.
2Device complexity
If traditional base station-terminal reference signal methods are applied to terminal-terminal communication, then implementation complexity is reduced, but adaptability to sidelink-specific requirements may worsen
Solution Approach 1:
The patent applies local quality by allowing different reference signal configurations to be used in different sidelink scenarios. While the basic sequence generation and mapping methods are copied from base station-terminal communication, the patent enables scenario-specific adaptations through configurable parameters such as resource allocation patterns, transmission periodicity, and signal sequence initialization, ensuring both low implementation complexity and high adaptability.
Solution Approach 2:
The patent implements dynamics by making reference signal configurations adjustable and configurable based on specific sidelink communication needs. The system can dynamically select different reference signal patterns, resource allocations, and transmission parameters to adapt to varying channel conditions, traffic types, and quality of service requirements while maintaining a standardized base implementation.
Data Source
AI summary
A terminal is provided that includes a control unit configured to generate a sequence that corresponds to a sequence of a reference signal for channel state information between a base station and a terminal, and a transmission unit configured to transmit the generated reference signal having the sequence to another terminal.