Wi-Fi P2P Bandwidth Segmentation for Low-Contention Channel Access
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Solution Overview
Problem
In Wi-Fi peer-to-peer communication scenarios, multiple devices contending for transmission resources on high bandwidth channels lead to frequent air interface contention and collisions, resulting in long delays and increased channel interference.
Innovation Solution
A communication method that involves dividing high bandwidth channels into multiple narrow bandwidth channels, allowing devices to select idle channels based on signal-to-noise ratio and channel load to reduce contention and interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If multiple Wi-Fi D2D links use high bandwidth channels simultaneously, then the available bandwidth and potential throughput are increased, but the air interface contention and collision frequency increases leading to longer transmission delay
Solution Approach 1:
The patent segments the high bandwidth channel into multiple narrow bandwidth channels. Each Wi-Fi D2D link is assigned to a separate narrow bandwidth channel instead of sharing a single high bandwidth channel. This segmentation reduces the number of concurrent links per channel, thereby reducing air interface contention and collision frequency while maintaining overall system throughput capability.
2Productivity
If multiple Wi-Fi D2D links share the same high bandwidth channel, then channel utilization is improved, but the probability of resource contention and channel interference increases
Solution Approach 1:
The high bandwidth channel is divided into multiple narrow bandwidth channels, and different Wi-Fi D2D links are assigned to different narrow bandwidth channels. This spatial segmentation in the frequency domain reduces overlapping signals and minimizes channel interference between concurrent D2D links while maintaining efficient channel utilization across the entire bandwidth.
3Power
If Wi-Fi D2D links use maximum bandwidth channels, then the data transmission capacity is increased, but the contention for transmission resources with other terminal devices increases
Solution Approach 1:
The patent segments the maximum bandwidth channel into multiple narrow bandwidth channels. Each terminal device is assigned to a specific narrow bandwidth channel for D2D communication, which reduces the number of devices contending for resources on any single channel. This segmentation maintains the overall data transmission capacity while significantly reducing the complexity of resource contention management.
Data Source
AI summary
This application provides a communication method, a terminal device, and a storage medium. The communication method includes: A first terminal device performs a Wi-Fi P2P service in response to a first operation of a user, where the first terminal device uses a first channel to perform the Wi-Fi P2P service, and a bandwidth of the first channel is a maximum bandwidth supported by the first terminal device, and is 80 MHz or 160 MHz. When detecting that a signal-to-noise ratio and/or a channel load of the first channel meet a first preset condition, the first terminal device switches from the first channel to a second channel to perform the Wi-Fi P2P service, where a bandwidth of the second channel is 20 MHz or 40 MHz.