Dual Packet Format Detection for Low-Latency Wireless Decoding
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Solution Overview
Problem
Existing wireless communication systems face challenges in reliably identifying and decoding packets in network environments with multiple coexisting packet formats, particularly under strict latency restrictions, where incorrect format identification can lead to errors and reduced decoding accuracy.
Innovation Solution
A wireless communication apparatus and method that includes a first format detecting unit for signal processing on packet preambles, an estimating unit for multiple estimations, a decoding unit for format-based decoding, a second format detecting unit for control information-based format verification, and an error detection determination unit to correct format errors, ensuring accurate decoding even under strict latency conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If a single format detection method is used to meet strict latency restrictions, then processing speed is improved, but decoding accuracy deteriorates due to potential format identification errors
Solution Approach 1:
The format detection process is segmented into two independent stages: a first format detection unit performs initial format identification on the packet preamble to enable timely decoding preparation, while a second format detection unit performs verification based on decoded control information to ensure accuracy. This segmentation allows the system to meet latency requirements through the first unit while correcting errors through the second unit, thus resolving the contradiction between speed and accuracy.
2Reliability
If multiple format detection mechanisms are implemented to improve decoding accuracy, then reliability is improved, but device complexity increases
Solution Approach 1:
The patent merges two format detection functions into a unified reception processing system. The first format detection unit and second format detection unit are integrated within the same wireless communication reception apparatus, sharing common resources such as the decoding unit and buffer memory. This merging approach improves reliability through dual detection while controlling complexity by avoiding complete duplication of detection mechanisms.
Solution Approach 2:
The second format detection unit provides feedback to verify and correct the format identification results from the first format detection unit. This feedback mechanism ensures high decoding reliability by detecting and correcting format identification errors, while the structured feedback path keeps the system complexity manageable through clear control flow.
3Measurement precision
If format verification based on decoded control information is performed, then measurement precision is improved, but loss of time increases due to additional processing steps
Solution Approach 1:
The first format detection unit performs preliminary format identification on the packet preamble before full decoding, enabling the system to prepare decoding parameters in advance. This preliminary action reduces the overall processing time while the subsequent second format detection unit performs verification based on decoded control information to ensure accuracy, thus balancing time consumption with identification accuracy.
Data Source
AI summary
A wireless communication apparatus that includes a first format detecting unit detecting a format by executing signal processing on a preamble of a received packet before decoding, an estimating unit using the preamble to carry out multiple types of estimations, and a decoding unit decoding the received packet in accordance with the detected format based on the estimations. The apparatus further includes a second format detecting unit detecting the format of the received packet based on decoded control information in the preamble of the received packet, an error detection determination unit, when the format detected by the first format detecting unit differs from the format detected by the second format detecting unit, determining that the format detected by the first format detecting unit is an error, and a control unit controlling operations of the estimating unit and the decoding unit based on a determined result.