Base Station Bandwidth Assignment for Wireless Terminals
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Solution Overview
Problem
In wireless communication systems, the high frequency of data transmission from multiple low-power terminals to a base station leads to increased random access traffic, resulting in collisions and reduced throughput and delay properties due to the inefficiencies in existing dynamic slot assignment methods.
Innovation Solution
The system introduces a specific period for each terminal or wireless link where the base station proactively assigns uplink data transmission bandwidth, allowing terminals to transmit data without random access when data frequency is high, thereby reducing the need for bandwidth requests and collisions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If dynamic slot assignment is used to accommodate multiple low-power terminals, then resource utilization efficiency is improved, but random access traffic increases leading to collisions and reduced throughput
Solution Approach 1:
The base station performs preliminary bandwidth assignment for terminals during periods when data transmission frequency is high, before the terminals actually need to transmit data. This proactive approach assigns bandwidth in advance, eliminating the need for terminals to perform random access bandwidth requests during peak periods, thereby reducing collisions and improving throughput while maintaining efficient resource utilization
2Adaptability or versatility
If terminals perform random access for bandwidth requests, then adaptability to varying data transmission needs is improved, but collision probability increases reducing delay properties
Solution Approach 1:
The base station performs preliminary bandwidth assignment during high data transmission frequency periods, eliminating the need for terminals to perform random access bandwidth requests. This proactive bandwidth assignment reduces collision probability and transmission delay while maintaining adaptability through continued demand assignment for periods when data transmission frequency is low
3Device complexity
If bandwidth assignment is performed only on demand, then system complexity is reduced, but throughput deteriorates during high data transmission frequency periods
Solution Approach 1:
The base station performs preliminary bandwidth assignment during high data transmission frequency periods without requiring explicit terminal requests. This proactive approach increases throughput by ensuring bandwidth is ready before terminals need to transmit, while the mechanism remains relatively simple as it relies on the base station's knowledge of data transmission frequency patterns rather than complex real-time negotiation
Data Source
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AI summary
A base station performs bandwidth, assignment for each terminal station or each wireless link even when the base station does not receive a bandwidth request in random access from the terminal station in the demand assignment period present in a specific period in which a transmission frequency of data to transmit is high, the specific period being specified for each terminal station or each wireless link between the terminal station and the base station, and the terminal station transmits at least one of bandwidth request information and the data to transmit in a bandwidth assigned by the base station.