Wireless Backhaul QoS Adjustment for Relay Access Nodes
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Solution Overview
Problem
Relay wireless devices in wireless networks face limitations in providing high-quality service to end-user devices due to inadequate backhaul connection throughput, particularly for resource-intensive traffic types like voice over LTE, leading to unsatisfactory user experiences.
Innovation Solution
A system and method that dynamically adjust the Quality of Service (QoS) parameters of the wireless backhaul link between a relay access node and a donor access node by comparing resource requirements of end-user devices attached to the relay with those directly connected to the donor, and modifying QoS parameters to meet the resource demands of the relayed devices.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If relay wireless devices are used to extend coverage and increase throughput, then coverage area and available throughput are improved, but backhaul connection throughput is limited
Solution Approach 1:
The patent applies dynamics by making the backhaul link QoS parameters adjustable rather than fixed. The system dynamically modifies QoS parameters (such as priority, bandwidth, latency) based on real-time traffic conditions and device requirements, allowing the backhaul connection to adapt its throughput capabilities to match the needs of connected wireless devices while maintaining reliable service.
2Adaptability or versatility
If default QoS parameters are used for backhaul links, then device complexity is reduced, but resource-intensive traffic types cannot receive adequate service
Solution Approach 1:
The patent applies parameter changes by modifying QoS parameters of the backhaul link based on detected traffic characteristics and device requirements. Instead of using fixed default parameters, the system changes parameters such as priority level, guaranteed bit rate, and packet loss thresholds to match the specific needs of different traffic types (e.g., VoLTE, gaming, web browsing), thereby providing differentiated service quality without requiring complex manual configuration.
3Quantity of substance
If relay access nodes serve more devices, then coverage and device capacity are improved, but QoS degradation occurs for relayed devices
Solution Approach 1:
The patent applies feedback mechanisms where the donor access node monitors traffic conditions and device requirements in real-time. Based on this feedback, the system adjusts backhaul link QoS parameters dynamically to ensure that relayed devices receive adequate service quality. The feedback loop allows the system to respond to changing conditions and maintain reliable user experience even as the number of served devices increases.
Data Source
AI summary
Systems, methods, and processing nodes for providing a quality of service (QoS) to wireless devices attached to a relay access node include determining that a first amount of a first traffic type between a donor access node and a first one or more wireless devices in communication with the donor access node via the relay access node exceeds a threshold amount, and adjusting a quality of service (QoS) parameter of a wireless backhaul link between the relay access node and the donor access node from a first default QoS parameter to a new QoS parameter.