AMI Bandwidth Management via Root Node Feedback
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Solution Overview
Problem
Advanced metering infrastructure (AMI) networks face inadequate bandwidth management, leading to excessive data transmissions by certain nodes or applications that slow down network portions, failing to meet quality of service (QoS) requirements and service level agreements (SLAs), especially during periods of congestion.
Innovation Solution
Implementing a feedback mechanism where the root node adjusts packet transmission QoS levels based on network congestion, upgrading QoS during available bandwidth and downgrading during congestion, using flow labels in packet headers to manage bandwidth and ensure SLAs are met.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If nodes transmit packets at high data rates to improve productivity, then bandwidth utilization increases, but network congestion occurs and QoS requirements are not met
Solution Approach 1:
The patent implements a feedback mechanism where the root node monitors network congestion levels and sends feedback messages to downstream nodes. When congestion is detected, the root node instructs downstream nodes to reduce their transmission rates or prioritize different traffic flows, thereby maintaining QoS requirements while optimizing overall network productivity through dynamic rate adjustment.
Solution Approach 2:
The system dynamically adjusts packet transmission rates and QoS parameters based on real-time network conditions. The root node modifies transmission characteristics upstream based on downstream congestion status, enabling the network to adaptively balance between high data rates and QoS fulfillment rather than operating at fixed rates.
2Quantity of substance
If certain nodes or applications transmit excessive data to increase their bandwidth usage, then their data transmission needs are met, but other portions of the network slow down
Solution Approach 1:
The patent applies different QoS treatment to different traffic flows based on their priorities and network conditions. The root node selectively adjusts transmission parameters for specific upstream flows based on downstream congestion status, allowing high-priority traffic to maintain speed while limiting bandwidth consumption of lower-priority traffic that would otherwise slow down the network.
Solution Approach 2:
The system changes transmission parameters such as data rates, packet scheduling priorities, and flow characteristics dynamically based on network conditions. The root node modifies these parameters upstream in response to downstream congestion, enabling bandwidth management that prevents any single node or application from monopolizing network resources while maintaining overall transmission speed.
3Reliability
If the root node monitors and controls downstream congestion to improve network efficiency, then QoS compliance increases, but system complexity increases
Solution Approach 1:
The feedback mechanism centralizes congestion monitoring and control decisions at the root node, which already has a comprehensive view of network status. By leveraging the existing hierarchical structure and having the root node send control messages downstream, the system achieves SLA compliance without adding significant complexity, as the root node's monitoring capabilities are already in place for other network management functions.
Solution Approach 2:
The root node performs multiple network management functions including congestion monitoring, QoS enforcement, and traffic control through a single centralized mechanism. This multi-functionality at the root node level avoids the need for complex distributed control systems at each downstream node, maintaining SLA compliance while minimizing overall system complexity by consolidating management responsibilities.
Data Source
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AI summary
In a network environment, a node may measure and/or recognize network activity or congestion and send feedback to downstream nodes (i.e., higher rank nodes) in response. During periods of lower network activity, lower congestion and/or lower network load, the feedback may direct an upstream flow of packets to be transmitted at a quality of service (QoS) level that allows consumption of more bandwidth than is indicated by a QoS level associated with a service level agreement (SLA) of the upstream flow of packets. During periods of higher network activity, congestion and/or network load, the feedback may limit the upstream flow of packets to the QoS level associated with the SLA of the upstream flow of packets. Accordingly, an upstream node (e.g., a root node) may use feedback to regulate bandwidth used by one or more downstream nodes and/or flows of packets, in part using network activity, congestion and/or bandwidth availability.