Wireless Terminal Allocation Using Non-Contiguous Channels in Dense LANs
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Solution Overview
Problem
Existing wireless LAN technologies face challenges in providing high-efficiency and high-performance communication in high-density environments, where interference and congestion are prevalent, necessitating improved channel allocation and signaling methods.
Innovation Solution
The invention introduces a wireless communication method and terminal that utilize non-contiguous channel allocation and signaling, employing advanced PPDU formats and HE-SIG fields to efficiently manage multi-user transmissions and resource unit allocation, enabling efficient communication in high-density scenarios.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If non-contiguous channel allocation is used to reduce interference in high-density environments, then communication reliability is improved, but channel allocation complexity increases
Solution Approach 1:
The patent segments the frequency spectrum into multiple resource units (RUs) that can be independently allocated to different stations. Instead of assigning contiguous channels, the system divides the available bandwidth into discrete, manageable units that can be distributed non-contiguously based on interference conditions and station requirements, thereby improving reliability while managing complexity through structured division.
Solution Approach 2:
The channel allocation mechanism is made dynamic, allowing the access point to adjust resource unit assignments in real-time based on detected interference levels and traffic conditions. The system can switch between contiguous and non-contiguous allocation modes flexibly, adapting to changing network conditions rather than being fixed to a single allocation pattern.
2Productivity
If advanced PPDU formats and HE-SIG fields are used to signal non-contiguous channel allocation, then channel usage efficiency is improved, but protocol complexity increases
Solution Approach 1:
The HE-SIG fields and PPDU formats are designed to serve multiple functions: they signal not only the allocation of non-contiguous channels but also convey information about modulation schemes, coding rates, and resource unit distributions. By making the signaling structure multi-functional, the patent reduces the need for separate control mechanisms, thereby improving channel usage efficiency while limiting the increase in protocol complexity.
Solution Approach 2:
The patent utilizes parameter changes within the HE-SIG fields to encode different allocation scenarios. By varying field values and bit patterns to represent different non-contiguous channel configurations, the system achieves efficient signaling without requiring fundamentally new protocol structures, thus improving productivity while managing complexity through parameter manipulation.
3Speed
If multi-user transmissions are enabled to increase throughput, then communication speed is improved, but interference and congestion increase
Solution Approach 1:
The patent applies local quality by assigning different resource units to different stations based on their specific interference conditions and reception capabilities. Instead of uniform treatment, each station receives customized allocation decisions considering its local environment, allowing multi-user transmission to proceed at high speeds while managing interference through differentiated service and spatially-aware resource distribution.
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AI summary
The present invention relates to a wireless communication method and a wireless communication terminal using a non-contiguous channel. To this end, provided are a wireless communication terminal including a processor and a transceiver, wherein the processor receives a wireless packet through the communication unit, obtains non-contiguous channel allocation information of the received packet, and decodes the received packet based on the obtained non-contiguous channel allocation information and a wireless communication method using the same.