TV Band Device Neighbor Detection via Coexistence Manager
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Solution Overview
Problem
The increasing demand for wireless data traffic and the complexity of next-generation communication systems have led to a severe depletion of frequency resources, making traditional frequency allocation methods ineffective, prompting the need for innovative solutions like cognitive radio technology for efficient frequency sharing.
Innovation Solution
A method for managing resources to allow TV band networks or devices to coexist by discovering neighbors through a coexistence manager, which involves transmitting requests, receiving neighbor information based on interference levels and operating channels, and allocating non-overlapping channels to optimize resource utilization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If traditional frequency allocation methods are used, then frequency resources are managed through government control and auction, but frequency resources become severely depleted and allocation becomes ineffective
Solution Approach 1:
The patent implements dynamic frequency allocation where the coexistence manager continuously monitors interference levels and operating channels of neighboring devices, and dynamically adjusts frequency assignments based on real-time conditions rather than static government allocation, thereby improving allocation efficiency and preventing resource depletion
Solution Approach 2:
The system employs feedback mechanisms where devices report their operating channels and interference levels to the coexistence manager, which then uses this feedback information to optimize frequency allocation decisions, creating a closed-loop system that adapts to changing conditions and maximizes frequency resource utilization
2Adaptability or versatility
If cognitive radio technology is implemented for frequency sharing, then frequency resource utilization improves, but device complexity increases due to neighbor discovery and interference management requirements
Solution Approach 1:
The patent introduces a coexistence manager as an intermediary entity that handles the complex tasks of neighbor discovery, interference level monitoring, and frequency allocation decisions, thereby enabling frequency sharing capabilities without requiring each individual device to implement complex cognitive radio functionality, thus reducing overall system complexity while maintaining adaptability
3Measurement precision
If neighbor discovery is performed to manage interference relationships, then resource allocation accuracy improves, but detection and measurement difficulty increases
Solution Approach 1:
The system implements self-service mechanisms where each device automatically performs neighbor discovery and reports its own operating channels and interference levels to the coexistence manager without requiring complex external measurement systems, thereby improving detection accuracy through device-generated data while reducing the overall difficulty of neighbor discovery
Data Source
AI summary
Provided is a method for detecting a network or device and a neighbor thereof, in order to detect networks or devices which substantially interfere with each other and to manage resources in consideration of the substantial interfering relationships so that the networks or devices can efficiently coexist. To this end, according to an embodiment of the present invention, a method for detecting a neighbor of a television band device (TVBD) network or device comprises the steps of: transmitting a request to a coexistence manager which serves the TVBD network or device; and receiving neighbor information on the TVBD network or device in response to the request, wherein the neighbor information includes an identifier of a neighbor TVBD network or device which interferes with the TVBD network or device, and the neighbor information is based on operating channels of the TVBD network or device and the neighbor TVBD network or device.