HRLLC Wireless Configuration with Adaptive Feedback Timing
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Solution Overview
Problem
Wireless communication systems face challenges in dynamically supporting multiple wireless communication services with varying latency and reliability requirements, particularly in achieving high reliability and low latency configurations due to limitations in resource configurations and legacy feedback mechanisms.
Innovation Solution
The system enhances resource allocation and feedback mechanisms by identifying and assigning resources for high reliability, low latency communications (HRLLC) within the same transmission time intervals, utilizing techniques such as reduced scheduling timing, HARQ feedback, and channel state information enhancements, along with physical uplink shared channel and UL power control improvements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If legacy feedback mechanisms and resource configurations are used, then system compatibility with existing standards is maintained, but the ability to meet high reliability and low latency requirements is limited
Solution Approach 1:
The patent implements dynamic resource configuration and feedback mechanisms that can adapt to different service requirements. The system dynamically adjusts resource allocation, feedback timing, and configuration parameters based on the specific latency and reliability needs of different wireless services, allowing high reliability low latency communications to coexist with other services without requiring complete system redesign
Solution Approach 2:
The patent segments the wireless communication system into different service types with distinct configuration parameters and feedback mechanisms. By dividing the system into HRLLC services and other services with different latency and reliability requirements, the patent allows each service type to have optimized configurations without interfering with others, thus maintaining compatibility while enabling high reliability communications
2Adaptability or versatility
If dynamic resource allocation for multiple service types is implemented, then service versatility is improved, but scheduling complexity and processing overhead increase
Solution Approach 1:
The patent applies local quality optimization by providing service-specific feedback mechanisms and resource configurations. Each service type receives tailored feedback timing and resource allocation based on its specific latency and reliability requirements, rather than using a uniform configuration for all services. This allows the system to support multiple service types with optimized performance for each
Solution Approach 2:
The patent implements preliminary configuration of feedback mechanisms and resource allocations before actual communication occurs. By pre-configuring feedback timing and resource parameters based on service type, the system reduces real-time processing complexity and enables faster scheduling decisions, thus supporting service versatility without proportionally increasing scheduling complexity
3Loss of time
If reduced scheduling timing is used for high reliability low latency communications, then latency is reduced, but the margin for error and retransmission opportunities are reduced
Solution Approach 1:
The patent enhances feedback mechanisms with service-specific feedback timing and acknowledgment procedures. By implementing tailored feedback loops that provide timely acknowledgment and error information, the system enables reliable retransmission opportunities even with reduced scheduling timing. The feedback mechanism ensures that transmission errors are detected and corrected within the reduced time window, maintaining reliability despite shorter latency
Solution Approach 2:
The patent changes key communication parameters including feedback timing, resource allocation, and scheduling intervals to optimize for high reliability low latency communications. By adjusting these parameters dynamically based on service requirements, the system achieves both reduced latency and maintained reliability through parameter optimization rather than fixed configurations
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AI summary
Methods, systems, and devices for wireless communication are described. Wireless communications systems as described herein may be configured to support several service types with different latency, reliability, or throughput rates or standards. One such service type may be referred to as high-reliability, low latency communication (HRLLC). Enhancements to improve HRLLC performance in coexistence with and as a complement to legacy service types, such as LTE are described. These include, for example, downlink and uplink control enhancements, channel state information (CSI) feedback enhancements, physical uplink shared channel (PUSCH) enhancements, and UL power control enhancements to support HRLLC.