Base Station Wireless Units Guard Interval Policy
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Solution Overview
Problem
In wireless communication systems, the coexistence of terminal stations with differing propagation delays leads to decreased transmission efficiency due to the need for long Guard intervals for control signals, which negatively impact data transmission efficiency.
Innovation Solution
A method and system where a base station collects information on the Guard interval lengths of terminal stations and calculates setting and switching policies to optimize the connection of wireless communications units, allowing multiple permitted Guard interval lengths and adjusting propagation delays using antenna directivity, enabling efficient communication across terminals with varying delays.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a long Guard interval is set for control signals to accommodate terminal stations with large propagation delays, then reliability of control signal reception is improved, but transmission efficiency of the entire system deteriorates
Solution Approach 1:
The base station is divided into multiple wireless communication units, each capable of independently setting different Guard interval lengths. This segmentation allows control signals to be transmitted with appropriate GI lengths tailored to specific terminal stations, rather than using a uniformly long GI for all terminals. The collection unit gathers propagation delay information for each terminal, and the setting unit assigns terminals to communication units based on their GI requirements, thereby maintaining reliability for distant terminals while preserving transmission efficiency for closer terminals.
2Productivity
If different Guard interval lengths are set for different terminal stations based on propagation delay, then transmission efficiency for individual terminals is improved, but system complexity increases due to need for multiple wireless communication units
Solution Approach 1:
Each wireless communication unit is designed with multi-functionality, capable of performing collection, policy calculation, and setting operations. The collection unit gathers propagation delay information from all terminal stations, the policy calculation unit determines optimal GI settings and switching policies, and the setting unit configures appropriate communication units. This universal design allows a single communication unit to handle multiple terminal stations with different GI requirements, reducing the need for dedicated hardware for each terminal while maintaining transmission efficiency.
Data Source
AI summary
A wireless communication method for connecting a base station with each of a plurality of terminal stations set to differ in Guard interval length, with the base station being equipped with a plurality of wireless communications units each configured to be connectable with one or more of the terminal stations, includes: a collection step of collecting information about the Guard interval length set for each of the terminal stations and connection information about the terminal stations; a policy calculation step of calculating a setting policy for setting the Guard interval length permitted 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 each of the collected information about the Guard interval length and connection information about the terminal stations; 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.