Wireless Interference Margin Allocation for Shared Spectrum Terminals
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Solution Overview
Problem
Existing wireless systems face challenges in efficiently managing interference margins to prevent interference from exceeding allowable values in primary systems, particularly due to residual interference margins not being effectively handled.
Innovation Solution
A method for distributing interference margins among wireless devices and terminals, involving communication control devices that allocate and manage interference thresholds to ensure compliance with primary system limits, considering device positions, transmission powers, and communication patterns.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If interference margin is allocated to multiple communication devices in a secondary system, then frequency utilization efficiency is improved, but interference cumulation may exceed the allowable value of the primary system
Solution Approach 1:
The patent applies parameter changes by dynamically adjusting transmission power levels of communication devices in the secondary system based on real-time interference conditions. The system modifies the parameter P (transmission power) to ensure that while multiple devices can operate simultaneously (improving frequency utilization), the cumulative interference remains within the allowable value of the primary system. This is achieved through continuous monitoring and adjustment of transmission parameters.
2Quantity of substance
If cognitive radio technology is used for dynamic frequency sharing, then radio wave resource generation is improved, but system complexity increases
Solution Approach 1:
The patent employs an intermediary approach by introducing a coordination mechanism that manages interference margins and transmission powers across multiple devices. This intermediary system allocates interference margins to individual devices and monitors cumulative interference, enabling dynamic frequency sharing without requiring complex direct interactions between all devices. The intermediary layer simplifies the overall system complexity while still achieving efficient radio wave resource generation.
3Productivity
If interference margin distribution is optimized, then frequency use efficiency is improved, but difficulty in managing multiple devices increases
Solution Approach 1:
The patent optimizes interference margin distribution by dynamically changing management parameters such as interference margin allocation values and transmission power limits. The system adjusts these parameters based on the number of active devices, their positions, and current interference conditions, thereby improving frequency use efficiency while keeping management complexity tractable through systematic parameter adjustment rather than complex device-to-device coordination.
Data Source
AI summary
There is provided a wireless device including an acquisition unit (110) that acquires a distribution amount of an interference margin to a second wireless system that shares a part or a whole of a frequency allocated to a first wireless system, from a device that manages one or more of the second wireless systems, and a control unit (120) that determines, from the interference margin, a distribution amount of the interference margin to a terminal that performs wireless communication with the wireless device in the second wireless system.