Station Data Transmission via Indication Frame Allocation
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Solution Overview
Problem
In wireless network communications, the random contention method for data transmission in unlicensed spectra leads to increased access times for stations, compromising the service quality of real-time services, especially in networks with multiple stations and users.
Innovation Solution
A data transmission method where stations receive an indication frame from an access point to allocate specific random contention channels based on channel frequency information and random probability, reducing contention and improving access times, and optionally using channels for centralized scheduling and transmission to enhance service quality and efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If random contention manner is adopted for data transmission, then all stations have equal status and can access channels freely, but the average access time increases significantly when more stations are deployed
Solution Approach 1:
The unlicensed spectrum is divided into multiple sub-channels, and stations are allocated specific sub-channels through indication frames from the access point. This segmentation reduces contention on each individual channel while maintaining overall system flexibility and adaptability.
2Quantity of substance
If more stations are deployed in the wireless network, then network capacity and coverage are improved, but the service quality of real-time services deteriorates due to longer access times
Solution Approach 1:
By segmenting the channel into multiple sub-channels and allocating them to different stations, the system can support more stations simultaneously while ensuring that each station has dedicated access resources, thereby maintaining service quality for real-time applications.
Solution Approach 2:
Different stations are assigned different sub-channels based on their specific needs and characteristics. This local differentiation ensures that each station receives appropriate channel quality suitable for its service requirements, particularly for real-time services.
3Productivity
If all stations share all random contention channels, then channel utilization is maximized, but contention collision increases and access efficiency decreases
Solution Approach 1:
The shared channel is segmented into multiple sub-channels that are allocated to different stations. This reduces contention collisions on each sub-channel while maintaining high overall channel utilization through systematic allocation managed by the access point.
Data Source
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AI summary
The present invention provides a data transmission method, including: receiving, by a station, an indication frame sent by an access point, where the indication frame is used to allocate a specified random contention channel; and sending, by the station, data over the specified random contention channel according to the indication frame and a random probability. The present invention can reduce contention between stations, thereby reducing a time for accessing a random contention channel by the stations.