Mixed PPDU Wireless Terminal Bandwidth Segmentation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current wireless communication technologies face challenges in providing efficient long-distance transmission and high-frequency efficiency, especially in high-density environments, where existing standards like IEEE 802.11n and 802.11ac are limited in supporting higher throughput and reliability, and there is a need for a method to efficiently use bandwidth for simultaneous data transmission between multiple stations and access points.
Innovation Solution
A wireless communication terminal and method that generates a mixed Physical Layer Protocol Data Unit (PPDU) to transmit data for both Long Range (LR) and non-LR wireless communication terminals, with the LR PPDU having a narrower bandwidth than the non-LR PPDU, allowing for separate training signals and flexible transmission timing, and the inclusion of trigger information for uplink transmission formats and start times to optimize frequency band usage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of moving object
If a single bandwidth is used for all wireless communication terminals, then device complexity is reduced, but long-range terminals experience insufficient transmission distance and data loss increases
Solution Approach 1:
The patent segments the bandwidth configuration by creating separate PPDU structures for long-range terminals with narrower bandwidth and non-long-range terminals with wider bandwidth. This allows each terminal type to operate at its optimal bandwidth without requiring complex per-terminal configuration, resolving the contradiction between transmission distance and device complexity.
Solution Approach 2:
The patent applies local quality by assigning different bandwidth characteristics to different parts of the communication system - long-range terminals use narrow bandwidth optimized for distance, while non-long-range terminals use wide bandwidth optimized for throughput. This localized optimization resolves the contradiction by matching bandwidth to terminal-specific requirements rather than using a uniform configuration.
2Reliability
If separate PPDU structures are used for long-range and non-long-range terminals, then transmission reliability improves, but device complexity increases
Solution Approach 1:
The patent implements a dynamic PPDU structure that adapts its characteristics based on terminal type. The base station determines whether to transmit LR-PPDU or non-LR-PPDU based on terminal capabilities and channel conditions, allowing the system to maintain high reliability through appropriate structure selection while avoiding the complexity of simultaneously supporting multiple rigid structures.
Solution Approach 2:
The patent changes key parameters of the PPDU structure (bandwidth, training signal configuration, data field structure) based on terminal type. By dynamically adjusting these parameters rather than using completely separate structures, the system achieves high reliability for each terminal type while controlling overall complexity through parameter-based differentiation.
3Productivity
If wide bandwidth is used for high throughput, then data transmission speed increases, but transmission distance decreases and data loss increases
Solution Approach 1:
The patent segments the service into two distinct modes: high-speed mode using wide bandwidth for non-long-range terminals, and long-distance mode using narrow bandwidth for long-range terminals. This segmentation allows each mode to operate at its optimal performance point without compromise, resolving the contradiction between throughput and transmission distance.
4Length of moving object
If narrow bandwidth is used for long-range transmission, then transmission distance increases, but data transmission speed decreases
Solution Approach 1:
The patent applies local quality by optimizing bandwidth selection for each terminal's specific requirements. Long-range terminals receive narrow bandwidth optimized for distance, while non-long-range terminals receive wide bandwidth optimized for speed. This localized optimization resolves the contradiction by matching bandwidth to the specific operational context of each terminal rather than using a universal configuration.
Data Source
AI summary
Provided is a base wireless communication terminal. The base wireless communication terminal includes a transceiver and a processor. The processor is configured to transmit a mixed Physical Layer Protocol Data Unit (PPDU) including both data for a Long Range (LR) wireless communication terminal and data for a non-LR wireless communication terminal to the LR wireless communication terminal and the non-LR wireless communication terminal using the transceiver. The LR PPDU including only the data for the LR wireless communication terminal has a narrower bandwidth than a bandwidth of the non-LR PPDU including only the data for the non-LR wireless communication terminal.