DMRS Patterns for Short Channel Repetitions in 5G NR

The patent applies parameter changes by modifying the DMRS pattern configuration based on the symbol length of channel transmission repetitions. When the symbol length is less than four symbols, the patent defines specific DMRS patterns (e.g., placing DMRS at specific symbol positions within the shortened transmission) to ensure adequate channel estimation and demodulation performance while maintaining the flexible short transmission format.

The patent applies local quality by defining DMRS patterns specifically tailored for different symbol length scenarios. Instead of creating a completely new complex system, the patent locally adapts the DMRS pattern configuration for short symbol length cases (less than four symbols) while maintaining the existing standard patterns for longer transmissions. This targeted approach ensures reliability where needed without unnecessarily complicating the entire system.

The patent applies partial action by selectively applying DMRS pattern definitions only to the specific case of channel transmission repetitions with symbol lengths less than four symbols, rather than mandating all transmissions meet a four-symbol minimum. This allows the system to maintain high transmission efficiency for short repetitions where appropriate while ensuring reliability through defined DMRS patterns when needed, avoiding unnecessary delays for all transmissions.