WLAN Random Access Using BSS Identity to Reduce OFDMA Collisions
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Solution Overview
Problem
The challenge of network collisions and reduced efficiency in wireless local area networks (WLAN) due to overlapping network coverage and increased network load, particularly in scenarios involving multiple-user transmission, is not adequately addressed by existing technologies.
Innovation Solution
A network access method and apparatus that utilizes a first radio frame indicating resource units for random-access operations, along with a second radio frame providing random-access parameters and identities of basic service sets, to manage orthogonal frequency division multiple access (OFDMA) and multiple-user multiple-input multiple-output (MIMO) processes, reducing collisions and improving transmission efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If multiple access points deploy WLAN networks intensively to increase coverage, then network coverage area is improved, but network collision rate increases and transmission efficiency deteriorates
Solution Approach 1:
The patent segments the network access process by introducing identity-based classification (public identity vs. private identity) for access points. Stations perform different random access procedures depending on the identity type, dividing the access mechanism into distinct paths that reduce collisions and improve overall network efficiency while maintaining extensive coverage.
2Quantity of substance
If one access point virtualizes multiple basic service sets to serve more users, then user capacity is improved, but access complexity increases
Solution Approach 1:
The patent implements a universal random access mechanism that works across multiple basic service sets (BSSs) virtualized by a single access point. The station uses a unified procedure to handle different BSS identities (public and private), allowing one access point to serve multiple user groups without proportionally increasing access complexity.
3Adaptability or versatility
If stations perform random access in overlapping coverage areas, then network accessibility is improved, but collision probability increases
Solution Approach 1:
The patent applies local quality by differentiating access procedures based on the specific identity type (public or private) of the target access point. Stations adjust their random access behavior according to the local characteristics of the BSS they are accessing, optimizing success probability for each local context while maintaining overall network accessibility.
Data Source
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AI summary
Disclosed is a network access method, including that a station receives a first radio frame from a first access point, where the first radio frame indicates a resource unit for a random-access operation; and when the sending address of the first radio frame is a public identity or a private identity, the station performs the random-access operation. Also disclosed are a network access apparatus and a storage medium.