Relay Node Resource Allocation Control in Radio Networks
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
In radio cellular networks with relay nodes, independent monitoring of backhaul and RN-access links leads to inefficient radio resource allocation, causing data overflow and inefficient resource utilization due to the interdependence of throughput between these links.
Innovation Solution
A radio communication system where each relay node sets a target value for a parameter reflecting both link statuses and notifies the upper-layer node of differences, allowing the node to control resource allocation based on these differences, ensuring efficient allocation across both links.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If independent monitoring of backhaul and RN-access links is performed, then resource allocation control is simplified, but radio resource allocation efficiency deteriorates due to link interdependence
Solution Approach 1:
The patent merges the monitoring of backhaul link and RN-access link into a single integrated monitoring process at the relay node. Instead of independently monitoring each link, the relay node monitors both links together and determines resource allocation based on the combined status of both links, thereby resolving the contradiction between control simplicity and allocation efficiency.
2Loss of information
If resource allocation is controlled independently for each link, then control signaling is reduced, but data overflow occurs due to throughput interdependence
Solution Approach 1:
The patent combines the resource allocation control for backhaul link and RN-access link into a unified control mechanism. The relay node determines resource allocation for both links simultaneously based on their combined status, preventing data overflow caused by throughput interdependence while minimizing control signaling through integrated decision-making.
3Adaptability or versatility
If separate resource allocation control is implemented for backhaul and RN-access links, then link-specific optimization is achieved, but overall network performance deteriorates due to ignoring link interdependence
Solution Approach 1:
The patent merges link-specific resource optimization with overall network performance consideration by implementing unified resource allocation control at the relay node. The relay node simultaneously considers the status and requirements of both backhaul and RN-access links, achieving link-specific optimization while maintaining overall network performance through integrated control.
Data Source
Figure 1
Figure 2
Figure 3
AI summary
A communication system includes a plurality of nodes including a base station; at least one terminal; and at least one relay node through which each terminal can be connected to the base station. An entity in a network higher in layer than each relay node configures the relay node to set a target value for a predetermined parameter reflecting a radio link status of the relay node. The relay node monitors the predetermined parameter to notify an upper-layer node of difference information corresponding to a difference between the target value and a monitored parameter value. The upper-layer node controls a link parameter of a radio link connecting the upper-layer node and the relay node depending on the difference information, resulting in efficient radio resource allocation in a relay network with small signaling overhead.