Dynamic Relay Selection Using Signal Attenuation Zones
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Solution Overview
Problem
Current techniques for selecting relay nodes in cellular networks are complex and inefficient, particularly due to the high load on the return channel and the lack of methods to reduce the number of potential relays, which can lead to counterproductive relay operation and increased costs.
Innovation Solution
A method for selecting dynamic relay nodes by determining nodes with attenuation below a threshold, limiting candidate nodes based on signal attenuation, and using attenuation zones to eliminate unnecessary nodes from the selection process, thereby reducing the complexity and load on the return channel.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If all nodes are considered as potential relay candidates, then the relay selection can find the optimal relay, but the complexity of the selection process and the load on the return channel increase significantly
Solution Approach 1:
The patent segments the set of all potential relay nodes into two distinct groups: a first set of nodes that forward channel quality information to the destination, and a second set of nodes that are selected as actual relay candidates based on this information. This segmentation reduces the number of nodes that need to be evaluated for relay selection, thereby reducing the complexity of the selection process and the load on the return channel while still maintaining the ability to find the optimal relay.
2Reliability
If relay nodes are deployed to improve signal reception, then the signal-to-noise ratio increases, but the cost of the system increases due to additional infrastructure
Solution Approach 1:
The patent enables ordinary terminal nodes in the network to serve as relay nodes using their existing transceiving capabilities. Instead of deploying dedicated relay infrastructure, the system leverages the self-service capability of existing nodes to provide relay functions. This approach improves signal reception quality for nodes in coverage holes without requiring additional infrastructure deployment, thereby avoiding increased system costs.
3Ease of manufacture
If dynamic relays are used instead of static relays, then infrastructure cost is reduced, but the complexity and load on the return channel increase
Solution Approach 1:
The patent applies segmentation by dividing the dynamic relay selection process into two phases: first, a subset of nodes is identified to provide channel quality feedback, and second, relay candidates are selected from this subset based on the feedback information. This two-stage segmentation reduces the complexity of dynamic relay selection and the load on the return channel compared to evaluating all nodes, while still maintaining the cost advantage of using existing terminal infrastructure.
4Reliability
If relay selection uses complete channel information, then the transmission reliability is maximized, but the load on the return channel increases
Solution Approach 1:
The patent extracts only the necessary channel quality information from the complete channel state information and uses this extracted subset for relay selection. Instead of utilizing all available channel information, the method identifies and uses only the critical metrics needed for making relay decisions. This extraction approach maintains transmission reliability by using sufficient information while significantly reducing the load on the return channel that would otherwise be required to transmit complete channel state information.
Data Source
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AI summary
The invention relates to the selection of at least one dynamic node, in a mobile network, as a candidate for relaying a data communication signal between a transmitting entity and a receiving entity of the network. In terms of the invention: at least one first area (Z2) around at least one first entity among the transmitting and receiving entities (TER) is defined, beyond which a data communication signal is attenuated beyond a first predetermined threshold (R2); and the selection of nodes as possible candidates for relaying the communication signal on the basis of the definition of the first area is limited.