Relay Node Carrier Aggregation Assignment
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Solution Overview
Problem
In heterogeneous wireless networks, relay nodes face delays and service quality issues due to inadequate resource allocation and channel management, particularly when serving multiple end-user devices in dual-connectivity mode, leading to suboptimal wireless backhaul quality.
Innovation Solution
Assigning all available component carriers to relay nodes by default based on channel state information and load thresholds, ensuring continuous resource availability and reducing delays by dynamically managing carrier aggregation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If relay nodes are treated like regular wireless devices for resource allocation, then resource allocation simplicity is maintained, but delays occur due to channel assignment and CSI report processing
Solution Approach 1:
Instead of treating relay nodes like regular wireless devices and assigning channels dynamically, the patent inverts the approach by pre-configuring relay nodes with dedicated channels and all available component carriers. This eliminates the need for dynamic channel assignment and CSI reporting for relay nodes, thereby removing the associated delays while maintaining resource allocation efficiency.
Solution Approach 2:
The patent applies preliminary action by pre-assigning all available component carriers to relay nodes during initial configuration rather than allocating them dynamically during operation. This advance preparation ensures that relay nodes have immediate access to all necessary resources, eliminating delays that would otherwise occur during channel assignment and resource allocation processes.
2Productivity
If component carriers are dynamically assigned based on buffer status, then resource efficiency is improved, but service interruptions occur for relay nodes
Solution Approach 1:
The patent applies local quality by differentiating resource allocation strategies between relay nodes and regular wireless devices. Specifically, relay nodes are granted all available component carriers regardless of buffer status, while regular devices receive dynamic allocation based on their actual data needs. This localized quality assurance ensures service continuity for relay nodes without sacrificing overall resource efficiency.
Solution Approach 2:
Instead of applying buffer-status-based dynamic allocation uniformly to all nodes, the patent inverts the logic for relay nodes by always allocating all available component carriers regardless of buffer status. This inverted approach prioritizes service continuity for relay nodes, recognizing their critical role in network architecture.
3Productivity
If relay nodes use carrier aggregation with multiple component carriers, then data throughput is increased, but delays increase due to processing CSI reports for each component carrier
Solution Approach 1:
The patent extracts the CSI reporting requirement specifically for relay nodes, removing this time-consuming process from their resource allocation workflow. By eliminating the need for relay nodes to report CSI for each component carrier, the patent maintains high data throughput through carrier aggregation while removing the associated processing delays.
Solution Approach 2:
Instead of requiring relay nodes to follow the standard CSI reporting procedure used by regular wireless devices, the patent inverts the approach by exempting relay nodes from this requirement. This allows relay nodes to utilize multiple component carriers for high throughput without incurring the time penalty of processing CSI reports for each carrier.
4Reliability
If all available component carriers are assigned to relay nodes by default, then wireless backhaul quality is stabilized, but resource availability for other devices may be reduced
Solution Approach 1:
The patent applies dynamics by making the resource allocation system adaptive to different node types. While relay nodes receive all available component carriers by default to ensure stable wireless backhaul, the system dynamically adjusts resource allocation for regular wireless devices based on their actual data needs and buffer status. This dynamic approach ensures that resources are not wasted on devices that don't need them, while relay nodes maintain guaranteed high-quality connections.
Solution Approach 2:
The patent applies local quality assurance by providing differentiated resource allocation to relay nodes versus regular wireless devices. Relay nodes receive all available component carriers to guarantee stable backhaul quality, while other devices receive allocation proportional to their actual needs. This localized quality differentiation ensures critical network infrastructure maintains high reliability without unnecessarily consuming resources that could be used elsewhere.
Data Source
AI summary
Optimizing carrier aggregation assignment for relay nodes by assigning all available component carriers within a sector towards relay node transmissions regardless of a buffer status of the relay nodes. Embodiments include stationary relay nodes and those with consistent channel states.