Sidelink Reference Signal Sequence Generation for 5G Terminals
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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, affecting direct communication between terminals in LTE and 5G systems.
Innovation Solution
A terminal is configured to generate and transmit a sidelink reference signal sequence similar to that used between a base station and a terminal, with specific parameters and configurations for CSI-RS and DM-RS, including pseudo-random sequences and mapping strategies, to ensure effective demodulation and channel state information reporting.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If reference signals are introduced for demodulation and channel state information in NR-SL, then communication reliability is improved, but device complexity increases due to unspecified sequence and mapping configurations
Solution Approach 1:
The patent applies universality by defining reference signals (DM-RS and CSI-RS) that serve multiple functions: DM-RS is used for demodulation of PSCCH/PSSCH/PSBCH, while CSI-RS is used for channel state information reporting and radio link monitoring. This multi-functional design improves communication reliability without proportionally increasing device complexity.
Solution Approach 2:
The patent specifies parameter changes by defining clear configuration parameters for reference signals including sequence initialization (cinit), scrambling identifiers (nID), mapping patterns, and timing information. These standardized parameters enable reliable reference signal generation and reception while reducing implementation complexity through explicit specifications.
2Ease of operation
If clear specifications for reference signal sequence and mapping are provided, then ease of operation is improved, but the scope of the invention is limited to standardized configurations
Solution Approach 1:
The patent applies segmentation by dividing reference signals into distinct types (DM-RS and CSI-RS) with separate configuration parameters and usage scenarios. This segmentation provides clear operational guidelines for each signal type while maintaining adaptability through configurable parameters that can be adjusted based on specific communication needs.
Solution Approach 2:
The patent implements dynamics by defining configurable parameters that can be adjusted based on communication conditions. For example, the sequence initialization cinit and scrambling identifiers nID can be dynamically configured according to the specific sidelink communication scenario, enabling both ease of operation through standardization and adaptability through configurability.
Data Source
AI summary
A terminal is provided that includes a control unit configured to generate a sequence of a sidelink reference signal that corresponds to a sequence of a reference signal for demodulating a signal between a base station and a terminal; and a transmission unit configured to transmit the generated sidelink reference signal having the sequence to another terminal.