UHR/ELR Wireless Payload Layout for 1 Mbps Transmission Efficiency
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Solution Overview
Problem
Existing wireless communication technologies face inefficiencies in achieving ultra-high reliability and long range due to limitations in payload structure design, particularly in supporting data rates of 1 Mbps with existing IEEE 802.11 standards, leading to increased on-air time and complexity.
Innovation Solution
The proposed solution involves optimizing payload structure configurations by adjusting parameters such as symbol periodicity, RU size, number of tones, code rate, and CP size, and leveraging techniques like distributed RUs and new code rates to achieve target data rates, including using BPSK with a code rate of ⅔ and QPSK with code rates of ⅓, and RU sizes like 26-RU, 52-RU, and 106-RU to maximize power and diversity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If existing IEEE 802.11 payload structure is used to support 1 Mbps data rate, then reliability is improved, but on-air time increases and transmission efficiency deteriorates
Solution Approach 1:
The patent changes multiple payload structure parameters simultaneously: adopts 2/3 code rate for BPSK and 1/3 code rate for QPSK, uses 1.6 microsecond cyclic prefix instead of longer prefixes, and implements distributed RU allocation. These parameter changes collectively reduce on-air time while maintaining the 1 Mbps data rate requirement, thus improving transmission efficiency without sacrificing reliability.
2Adaptability or versatility
If conventional payload configuration is used, then compatibility with existing standards is maintained, but data transmission efficiency deteriorates
Solution Approach 1:
The patent introduces dynamic modulation and coding schemes that can adapt between BPSK with 2/3 code rate and QPSK with 1/3 code rate based on channel conditions. This dynamic approach allows the system to maintain compatibility with existing IEEE 802.11 standards while achieving improved data transmission efficiency through optimized payload structures.
3Productivity
If higher data rates are implemented, then productivity improves, but reliability deteriorates due to increased on-air time
Solution Approach 1:
The patent optimizes the balance between data rate and reliability by selecting specific parameter combinations: 2/3 code rate with BPSK or 1/3 code rate with QPSK, combined with 1.6 microsecond cyclic prefix and distributed RU allocation. These parameter changes achieve data rates close to 1 Mbps while reducing on-air time, thereby maintaining reliability even at higher effective throughput.
Data Source
AI summary
A system for wireless communications over one or more channels, may include one or more processors and memory coupled with the one or more processors. The one or more processors may identify, based at least on a target data rate and a frequency bandwidth of a channel among the one or more channels, (1) a number of resource units (RUs) within the frequency bandwidth and (2) a number of tones per RU to achieve the target data rate. The one or more processors may transmit, via a transmitter, data using one or more RUs.