HE-SIG-B Field Encoding for WLAN Reliability
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current wireless communication systems, particularly in next-generation WLANs like IEEE 802.11ax, face inefficiencies in encoding high efficiency signal fields like HE-SIG-B, which affects the reliability and performance of data transmission due to the lack of effective grouping and error detection mechanisms for common and user-specific parts.
Innovation Solution
The proposed solution involves grouping user-specific parts of the HE-SIG-B field together with individual CRCs and optionally encoding the common part with user-specific parts, optimizing the encoding scheme to improve reliability and efficiency by allowing each user's data to be validated independently, and using padding or repetition to ensure proper decoding.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If user-specific parts are individually encoded with separate CRCs, then decoding reliability is improved, but transmission overhead increases
Solution Approach 1:
The HE-SIG-B field is segmented into common part and user-specific parts, with each user-specific part individually encoded with its own CRC. This segmentation allows independent error detection for each user's data while maintaining overall structure efficiency.
Solution Approach 2:
Multiple user-specific parts are merged into a single codeword structure, sharing common encoding resources while maintaining individual CRC protection. This combining approach reduces redundant overhead compared to completely separate encoding while preserving reliability.
2Device complexity
If common part is separately encoded, then decoding complexity is reduced, but transmission efficiency decreases
Solution Approach 1:
The HE-SIG-B field is divided into a common part and user-specific parts, with the common part encoded separately. This segmentation simplifies the decoding process by allowing receivers to first decode common information once, then proceed to user-specific decoding.
Solution Approach 2:
The common part is encoded and transmitted first, providing preliminary information that facilitates subsequent decoding of user-specific parts. This preliminary encoding action reduces the complexity of later decoding operations.
3Reliability
If more CRC bits are added for error detection, then reliability is improved, but overhead increases
Solution Approach 1:
Each user-specific part is equipped with its own CRC for localized error detection, while the common part uses a shared CRC structure. This local quality approach ensures that error detection is applied where most needed without uniformly increasing overhead across all data.
Solution Approach 2:
The CRC parameters are optimized by using 16-bit CRCs for user-specific parts and tail bits for the common part, balancing error detection capability with overhead constraints. The parameters are changed to match the specific requirements of each data segment.
Data Source
AI summary
This disclosure describes methods, apparatus, and systems related to a high efficiency signal field coding system. A device may determine a high efficiency preamble in accordance with a high efficiency communication standard to be sent to one or more devices, the high efficiency preamble including at least in part a high efficiency signal field. The device may determine a common part included in the high efficiency signal field. The device may determine one or more device specific parts associated with the one or more devices. The device may encode the high efficiency signal field based at least in part on a predetermination combination of at least one of the common part or the one or more device specific parts. The device may cause to send the high efficiency preamble to the one or more devices, including the encoded high efficiency signal field.