Access Channel Selection Based on Transmission Rate Thresholds
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Solution Overview
Problem
Conventional communication systems face inefficiencies in data transmission over access channels due to collisions and lower spectral efficiency compared to traffic channels, especially in wireless systems, leading to higher delays and failure rates for delay-sensitive applications.
Innovation Solution
A method for selecting access channels based on channel conditions, allowing access terminals to choose between access and traffic channels for data transmission based on data size and transmission rate thresholds, optimizing data transmission rates and multiplexing data with signaling messages to improve spectral efficiency and reduce delays.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If data is transmitted over access channel to reduce delay, then transmission speed is improved, but transmission reliability deteriorates due to collisions and lower successful rate
Solution Approach 1:
The patent changes the parameter of transmission rate selection by introducing a threshold-based mechanism. The access terminal compares the selected transmission rate against a threshold and switches between access channel (for high rates above threshold) and traffic channel (for rates at or below threshold), thereby optimizing both speed and reliability based on channel conditions
Solution Approach 2:
The patent implements dynamic channel selection where the access terminal can switch between access channel and traffic channel based on real-time channel conditions and transmission rate requirements. This dynamic adaptation allows the system to exploit the access channel's low latency when conditions permit while falling back to the more reliable traffic channel when necessary
2Loss of time
If data is transmitted over access channel to avoid connection setup, then delay is reduced, but spectral efficiency deteriorates
Solution Approach 1:
The patent introduces a transmission rate threshold parameter that determines channel selection. When the selected rate exceeds the threshold, the access channel is used (prioritizing speed over spectral efficiency). When the rate is at or below the threshold, the traffic channel is used (prioritizing spectral efficiency). This parameter-based decision mechanism balances delay reduction with spectral efficiency maintenance
3Productivity
If transmission rate is increased to improve data throughput, then productivity is improved, but channel condition requirements worsen leading to higher failure rates
Solution Approach 1:
The patent implements a feedback mechanism where the access terminal monitors channel conditions and adjusts transmission rate selection accordingly. The system compares the selected transmission rate against a threshold derived from channel quality, and switches channels based on this feedback, thereby maintaining both high throughput and high success rates by adapting to current channel conditions
Data Source
AI summary
The present invention may provide a method of communication that includes selecting at least one access channel for transmission of data based on a channel condition. The present invention may also provide a method of communication that includes receiving data over at least one access channel selected for transmission based on a channel condition.