Designated Random Contention Channel Allocation for Wireless Stations
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Solution Overview
Problem
In wireless network communication, the random contention method for data transmission leads to increased connection times for stations, compromising the quality of service for real-time services due to equal positioning of stations and channels, resulting in inefficient data transmission as more stations are deployed.
Innovation Solution
A data transmission method where stations receive an indication frame from an access point to allocate a designated random contention channel, sense its state, and send data only after the channel is idle, potentially executing a backoff period to reduce contention and ensure channel availability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If random contention method is used for data transmission, then all stations can share all channels equally, but the average time for a station to connect to a channel increases as more stations are deployed
Solution Approach 1:
The patent segments the random contention channels into multiple designated channels, each assigned to specific stations. This segmentation reduces the number of stations competing on each channel, thereby reducing connection time while maintaining fair channel access through systematic assignment.
Solution Approach 2:
The access point performs preliminary action by allocating designated random contention channels to stations before data transmission begins. This preliminary channel assignment eliminates the need for stations to randomly search for available channels, significantly reducing connection time.
2Quantity of substance
If more stations are deployed in a wireless network, then network capacity increases, but the average time required for a station to be connected to a shared random contention channel becomes longer
Solution Approach 1:
By segmenting channels and assigning them to specific stations, the patent enables the network to accommodate more stations without increasing connection time. Each station has dedicated channels to contend on, so the total number of stations does not directly impact individual connection times.
Solution Approach 2:
The patent applies local quality by providing different channel access characteristics to different stations based on their specific needs and positions in the network. Each station experiences improved connection times on its designated channels regardless of the total network size.
3Productivity
If all stations share all random contention channels, then channel utilization is maximized, but quality of service for real-time services is hardly ensured
Solution Approach 1:
The patent segments channels into designated channels for specific stations, which reduces contention and improves reliability for real-time services. Channel utilization remains high because the segmentation is systematic and ensures efficient use of available channels without excessive collisions.
Solution Approach 2:
The patent changes the parameter of channel assignment from random to designated, which fundamentally alters the contention dynamics. This parameter change ensures that real-time services achieve both high channel utilization and reliable quality of service by reducing unpredictable delays from random contention.
Data Source
AI summary
The present invention provides a data transmission method. In the method of the present invention, a station receives an indication frame sent by an access point, where the indication frame is used for allocating a designated random contention channel; a channel state of the designated random contention channel is sensed according to the indication frame; and the station sends data on the designated random contention channel after it is detected that the designated random contention channel is in an idle state. Because in the method of the present invention, a designated random contention channel is allocated to a station, the station can send data on the designated random contention channel, contention among stations is reduced and a time for a station to be connected to a random contention channel is reduced.