NR Rate Matching Configuration for Limited Buffer Transmission
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Solution Overview
Problem
Existing communication systems face challenges in efficiently performing limited buffer rate matching (LBRM) for uplink and downlink data, particularly in next-generation wireless communication systems like NR, due to varying channel and interference characteristics that require dynamic resource allocation and support for diverse services.
Innovation Solution
The method involves configuring LBRM-related parameters by identifying the length of a circular buffer based on transport block size and maximum modulation order, using low-density parity-check codes (LDPC) for effective data transmission and reception, and utilizing bandwidth part (BWP) configuration in higher layer signaling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If limited buffer rate matching is applied to support diverse services with varying data rates, then service adaptability is improved, but system complexity increases due to dynamic parameter configuration
Solution Approach 1:
The patent applies parameter changes by dynamically configuring LBRM-related parameters including circular buffer length, transport block size, and maximum modulation order based on service requirements and channel conditions. This allows the system to adapt to diverse services (eMBB, URLLC, mMTC) by adjusting parameters rather than redesigning the entire system, thus improving service adaptability while controlling complexity.
Solution Approach 2:
The patent implements dynamics through higher layer signaling that enables flexible configuration of LBRM parameters. The system can dynamically switch between different rate matching modes and adjust buffer lengths based on real-time service demands and channel states, allowing the system to be adaptive without being overly complex through rigid reconfiguration.
2Reliability
If dynamic resource allocation is implemented to handle varying channel and interference characteristics, then transmission reliability is improved, but computational complexity increases
Solution Approach 1:
The patent changes parameters such as circular buffer length and modulation order based on channel and interference characteristics. By adjusting these parameters dynamically through higher layer signaling, the system achieves reliable transmission under varying conditions without requiring complex real-time optimization algorithms, thus balancing reliability with computational complexity.
3Productivity
If LBRM parameters are configured based on transport block size and modulation order, then data transmission efficiency is improved, but signaling overhead increases
Solution Approach 1:
The patent uses higher layer signaling to configure LBRM parameters that serve multiple functions: they define the circular buffer length, determine transport block size, and specify maximum modulation order. This multi-functionality allows efficient data transmission while reducing the need for separate signaling for each parameter, thus minimizing signaling overhead while maintaining high transmission efficiency.
Data Source
AI summary
The present disclosure relates to a communication method and system for converging a 5th-Generation (5G) communication system for supporting higher data rates beyond a 4th-Generation (4G) system with a technology for Internet of Things (IoT). The present disclosure may be applied to intelligent services based on the 5G communication technology and the IoT-related technology, such as smart home, smart building, smart city, smart car, connected car, health care, digital education, smart retail, security and safety services. A method and apparatus according to an embodiment may allow a terminal or a base station to configure parameters for supporting limited buffer rate matching (LBRM) by using higher layer signaling or enable a suitable configuration to be made in a case of not configuring parameters for supporting the LBRM using the higher layer signaling.