Base Station Wireless Communication RTS CTS NoACK Policy
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Solution Overview
Problem
Conventional wireless communication methods using RTS/CTS and NoACK functions face inefficiencies due to overhead creation and disabled retransmissions in varying terminal station environments, affecting transmission efficiency and quality.
Innovation Solution
A wireless communication method and base station system that selectively enables or disables the RTS/CTS and NoACK functions based on collected information about terminal stations' environments and characteristics, using a policy calculation unit to determine optimal settings and switching policies for each wireless communications unit.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If RTS/CTS function is used for all terminal stations, then hidden-terminal problem is alleviated and transmission rate is maintained, but overhead is created and transmission efficiency is reduced
Solution Approach 1:
The patent applies local quality by enabling RTS/CTS function selectively for specific terminal stations based on their individual characteristics and environmental conditions. The base station determines which terminals require RTS/CTS protection against hidden-terminal problems and configures the function accordingly, rather than uniformly applying it to all terminals. This localized approach maintains transmission rate for vulnerable terminals while avoiding unnecessary overhead for others, thus resolving the contradiction between reliability and productivity.
2Productivity
If NoACK function is used for terminals with good transmission characteristics, then transmission efficiency is improved, but terminals with poor transmission characteristics cannot perform retransmission and communication quality deteriorates
Solution Approach 1:
The patent implements local quality by configuring the NoACK function differently for various terminal stations based on their transmission characteristics. Terminals with good transmission characteristics have NoACK enabled to improve efficiency, while terminals with poor characteristics keep ACK functionality to ensure reliable retransmission. The base station performs individual assessment and configuration for each terminal, allowing the system to achieve high overall transmission efficiency without sacrificing communication quality for vulnerable terminals.
3Device complexity
If uniform communication settings are applied to all terminal stations, then system complexity is reduced, but transmission efficiency cannot be optimized for individual terminal characteristics
Solution Approach 1:
The patent applies dynamics by making communication settings adjustable and adaptable based on terminal characteristics and environmental conditions. The base station dynamically determines appropriate configurations (RTS/CTS enablement, NoACK setting) for each terminal based on collected information about their transmission characteristics and hidden-terminal status. This dynamic configuration approach allows the system to optimize transmission efficiency for each terminal without requiring complex manual configuration, as the base station automatically adapts settings based on observed conditions.
Data Source
AI summary
A wireless communications method for connecting a base station with each of a plurality of terminal stations, the base station being equipped with a plurality of wireless communications units each configured to be able to selectively enable or disable an RTS/CTS function and a NoACK function and connectable with one or more of the terminal stations, includes: a collection step of collecting information as to whether each of the terminal stations is a hidden terminal and information about transmission characteristics of each of the terminal stations; a policy calculation step of calculating a setting policy for enabling or disabling the RTS/CTS function and the NoACK function for each of the wireless communications units and a switching policy for setting a condition for switching that one of the wireless communications units which is to be connected, for each of the terminal stations, based on the collected information; and a setting step of setting those of the terminal stations which are to be connected, for each of the wireless communications units based on the calculated setting policy and switching policy.