Cognitive Radio Relaying System for Frequency Band Retrieval
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Solution Overview
Problem
Conventional cognitive radio (CR) systems face inefficiencies in retrieving usable frequency bands and require constant priority user checks, leading to time-consuming and complex processes, especially in high frequency band environments where radio resource shortages are prevalent.
Innovation Solution
A communication method and apparatus using a relaying system that listens to fundamental channel and downlink/uplink map information, orthogonally encodes data, and transmits it through a determined channel, allowing for stable resource allocation and interference control, thereby eliminating the need for extensive frequency band retrieval and constant priority checks.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If conventional CR technology is used to retrieve usable frequency bands, then radio resource efficiency is improved, but the process becomes time-consuming and complex
Solution Approach 1:
The patent applies preliminary action by pre-establishing relaying system frames with designated channels (FCH, DL/UL maps) that cognitive radio systems can directly utilize. Instead of searching for usable frequency bands in real-time, CR systems can immediately access pre-allocated resources within the relaying frame structure, significantly reducing the time required to establish communication while maintaining efficient resource utilization.
2Reliability
If conventional CR technology constantly senses for priority users, then interference detection is improved, but the algorithm becomes complex and time-consuming
Solution Approach 1:
The patent introduces the relaying system as an intermediary that manages frequency band allocation and priority user coordination. Instead of CR systems directly sensing and detecting priority users through complex algorithms, the relaying system's frame structure and channel allocations serve as a mediator that automatically prevents interference. The FCH and DL/UL map information provide structured guidance that simplifies the sensing process while maintaining reliable interference detection.
3Quantity of substance
If extensive frequency bands are searched to secure radio resources, then resource availability is improved, but the retrieval process becomes complex
Solution Approach 1:
The patent applies segmentation by dividing the frequency spectrum into structured relaying system frames with specific allocated channels (FCH, DL/UL maps, data regions). Instead of searching through extensive frequency bands as a single complex process, the available resources are segmented into organized, easily accessible time-frequency slots within frames. This segmentation allows CR systems to efficiently utilize available resources without complex retrieval processes.
Data Source
AI summary
A communication method and apparatus of a cognitive radio (CR) environment using a relaying system while not interfering with a communication system having a priority right to use a frequency band, the communication method including: listening to fundamental channel (FCH) information and/or downlink/uplink (DL/UL) map information of a frame transmitted in the relaying system; obtaining a transmission signal of the relaying system using the FCH information and/or the DL/UL map information; orthogonally encoding data to be transmitted in the CR environment based on the obtained transmission signal; and transmitting the orthogonally encoded data via a determined channel that is used in the relaying system. Accordingly, aspects of the present invention can retrieve radio resources unused in the CR environment more easily.