Mobile Node Link Quality Measurement in Relay Networks
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Solution Overview
Problem
Conventional link quality measurements in heterogeneous mobile networks are limited, as terminals cannot effectively measure and report link quality with relay nodes, which hinders network planning and optimization, especially in dense, ad-hoc deployed small cell networks.
Innovation Solution
A method where base stations send measurement instructions to mobile nodes and relay nodes to measure and report link quality with identified relay nodes, with the option to only report link measurements above a threshold, allowing the network to identify suitable paths and optimize transmissions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional link quality measurement methods are used in heterogeneous networks, then the measurement process is simple, but the measurement precision is insufficient because terminals cannot effectively measure and report link quality with relay nodes
Solution Approach 1:
The base station performs preliminary action by sending measurement instructions to mobile nodes before actual measurement. These instructions include a list of relay nodes to measure and threshold criteria, preparing the measurement framework in advance. This allows terminals to systematically measure link quality with multiple relay nodes without requiring complex real-time decision-making, thereby improving measurement precision while managing complexity through pre-configured parameters.
Solution Approach 2:
The system implements feedback through the measurement report mechanism where mobile nodes report link quality measurements back to the base station. The base station uses this feedback information to identify suitable paths and optimize transmissions. The feedback loop includes threshold-based filtering where only measurements above the threshold are reported, enabling the system to continuously improve network performance based on actual measured data while maintaining manageable complexity through structured reporting protocols.
2Reliability
If link quality measurements with relay nodes are implemented, then network planning and optimization are improved, but the device complexity increases due to additional measurement instructions and reporting mechanisms
Solution Approach 1:
The measurement system is segmented into distinct functional components: the base station generates measurement instructions with relay node lists and thresholds, mobile nodes execute measurements and filter results based on thresholds, and the base station receives and processes reports. This segmentation allows each component to have well-defined responsibilities, improving reliability through systematic measurement while managing complexity by dividing the overall system into manageable functional modules that can be implemented independently.
3Loss of information
If all link measurements are reported regardless of quality threshold, then the quantity of information is maximized, but the loss of time increases due to processing and analyzing numerous low-quality measurements
Solution Approach 1:
The system applies partial action by implementing threshold-based filtering that reports only measurements meeting the minimum quality threshold. This selective reporting approach avoids the excessive action of processing all measurements regardless of quality. The threshold mechanism ensures that sufficient information is retained for network optimization while filtering out low-quality measurements that would consume time for processing and analysis, thereby optimizing the balance between information completeness and processing efficiency.
Data Source
AI summary
A method of obtaining link measurements in a mobile telecommunications system, the system including a base station configured to communicate with at least one terminal and one or more relay nodes configured to relay downlink and/or uplink transmissions between the at least one terminal and the base station. The method includes: sending, by the base station and to a mobile node, measurement instructions including a list identifying one or more relay nodes for measuring link quality, wherein the mobile node is one of the at least one terminal and the one or more relay nodes; and receiving, at the base station and from the mobile node, a list of one or more link measurements, wherein a link measurement measures a link quality for a link between the mobile node and one of the relay nodes identified in the list sent by the base station.