Limited Buffer Rate Matching Parity Bit Range Determination
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Solution Overview
Problem
Existing wireless communication systems, particularly 5G systems, face challenges in efficiently performing rate matching and limiting transmittable parity bits, which affects data transmission and reception.
Innovation Solution
A method and apparatus for implementing Limited Buffer Rate Matching (LBRM) in wireless communication systems, involving receiving instructions from a base station, obtaining required parameters, determining a limited range of parity bits, and transmitting or receiving data within this limited range.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If full buffer rate matching is performed to maximize data transmission, then transmission rate is improved, but buffer memory requirements and system complexity increase
Solution Approach 1:
The patent segments the circular buffer into multiple sections or ranges, allowing the system to selectively access only relevant portions of the buffer for rate matching operations. This segmentation reduces the effective buffer management complexity while maintaining the ability to perform comprehensive rate matching when needed.
Solution Approach 2:
The patent implements limited buffer rate matching where only a portion of the available parity bits within the circular buffer are used for rate matching, rather than processing the entire buffer. This partial action approach reduces computational complexity and buffer management overhead while still achieving adequate error correction performance for most transmission scenarios.
2Reliability
If the range of transmittable parity bits is increased to improve error correction, then reliability is improved, but transmission efficiency decreases due to longer processing time
Solution Approach 1:
The patent performs preliminary configuration of the circular buffer and pre-calculation of parity bit positions during system setup or before transmission begins. This preliminary action allows the rate matching process to proceed more quickly during actual transmission, as the buffer structure and accessible ranges are already established, reducing processing time while maintaining error correction capability.
3Manufacturing precision
If parameters for limited buffer rate matching are precisely determined to optimize performance, then manufacturing precision is improved, but device complexity increases
Solution Approach 1:
The patent employs parameter changes by allowing the circular buffer configuration parameters (such as buffer size, segment boundaries, and accessible ranges) to be dynamically adjusted based on transmission conditions, code rate requirements, and buffer capacity. This enables optimized performance for different scenarios without requiring completely different system configurations, balancing precision with manageable complexity.
Data Source
AI summary
The disclosure relates to a 5th Generation (5G) or pre-5G communication system for supporting a higher data rate after a 4th Generation (4G) communication system such as long term evolution (LTE). The disclosure is for transmitting and receiving data and control information in a wireless communication system. A method of operating a terminal may include receiving from a base station an instruction for Limited Buffer Rate Matching (LBRM), obtaining at least one parameter required to perform the LBRM, determining a limited range of parity bits for the LBRM, based on the parameters, and transmitting or receiving data, based on the limited range.