Carrier Aggregation Based on Control Channel Load
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Solution Overview
Problem
Relay nodes in wireless networks face limitations in servicing high-traffic wireless devices due to limited backhaul connection throughput, leading to overloading of donor access nodes, which can be alleviated by implementing carrier aggregation but is constrained by the availability of carriers with acceptable load levels.
Innovation Solution
A system and method for performing carrier aggregation based on control channel load levels, where a processing node identifies wireless devices capable of communicating via multiple carriers, instructs the donor access node to transmit load information, and aggregates carriers with low control channel load levels to optimize resource utilization and improve service quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If relay nodes aggregate carriers to service high-traffic wireless devices, then network throughput is improved, but control channel load levels increase causing potential overloading
Solution Approach 1:
The patent implements dynamic carrier selection based on real-time control channel load levels. The system continuously monitors load conditions and adjusts carrier aggregation configurations dynamically, selecting carriers with acceptable load levels for aggregation while avoiding overloaded carriers. This dynamic adaptation allows the network to maintain high throughput while preventing control channel overloading.
Solution Approach 2:
The system changes the parameter of carrier selection by evaluating control channel load levels as a key criterion. Instead of static carrier aggregation, the patent introduces load-level-based dynamic selection, where carriers are chosen or rejected for aggregation based on their current control channel load conditions, thus balancing throughput improvement with reliability maintenance.
2Productivity
If relay nodes use donor access node carriers for aggregation, then service quality to high-traffic devices is improved, but donor access nodes become overloaded
Solution Approach 1:
The patent introduces control channel load level information as an intermediary parameter that mediates between relay nodes and donor access nodes. This load information acts as a signaling mechanism that allows relay nodes to make informed carrier aggregation decisions without directly increasing donor node complexity. The load level feedback enables distributed decision-making that improves service quality while preventing donor node overloading.
3Productivity
If relay nodes implement carrier aggregation, then available throughput to end-user devices is increased, but the number of carriers with acceptable load levels is limited
Solution Approach 1:
The patent implements dynamic carrier aggregation where the set of available carriers for aggregation is not fixed but changes based on real-time load conditions. The system adaptively identifies carriers with acceptable load levels and dynamically configures aggregation relationships, allowing maximum throughput utilization while respecting load constraints. This dynamic approach maximizes the number of usable carriers under varying network conditions.
Data Source
AI summary
Systems, methods, and processing nodes for performing carrier aggregation in a wireless network including obtaining, at a relay access node, a control channel load level of a first carrier deployed by a donor access node, determining, at the relay access node, that the control channel load level is within an acceptable load level, and aggregating the first carrier with a second carrier deployed by the relay access node to communicate with a wireless device attached to the relay access node.