Wireless Access Node Packet Drop Rate Threshold Control
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Solution Overview
Problem
Wireless access nodes do not effectively and efficiently control the number of wireless user devices they serve, as they do not utilize packet drop rates to manage the load, leading to service disruptions due to high packet drop rates in both LTE and 5GNR networks.
Innovation Solution
Implementing a system where wireless access nodes determine packet drop rates for support access nodes and set add thresholds based on these rates, signaling support access nodes to serve user equipment when the packet drop rate exceeds a certain threshold, thereby managing the number of user devices and mitigating service disruptions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If wireless access nodes serve more user devices to increase network capacity, then productivity improves, but packet drop rate increases leading to service disruptions
Solution Approach 1:
The patent implements a feedback mechanism where the wireless access node continuously monitors packet drop rates from support access nodes and dynamically adjusts the add threshold accordingly. When packet drop rate exceeds a threshold, the add threshold is increased to prevent additional users from being added, thereby maintaining service reliability while managing network capacity.
Solution Approach 2:
The add threshold is made dynamic rather than static, adjusting in real-time based on monitored packet drop rates. This allows the system to adapt to changing network conditions, enabling higher capacity utilization when conditions are good while preventing service degradation when packet drops increase.
2Reliability
If wireless access nodes use packet drop rate to control user device attachment, then service reliability improves, but device complexity increases
Solution Approach 1:
The patent changes the parameter being monitored from simple signal quality metrics to packet drop rate, and changes the add threshold determination from static to dynamic based on packet drop rate. This parameter change enables reliability improvement through a relatively simple mechanism that leverages existing monitoring capabilities.
Data Source
AI summary
A wireless communication network serves a wireless User Equipment (UE) and comprises a wireless access node and a support access node. The wireless access node determines packet drop rate for the support access node. The wireless access node determines an add threshold for the support access node based on the packet drop rate for the support access node. The wireless access node determines an add value for the support access node and determines when the add value is greater than the add threshold. When the add value is greater than the add threshold, the wireless access node signals the support access node to serve the wireless UE and signals the wireless UE to attach to the support access node. In response, the support access node wirelessly transfers user data for a wireless communication service to the wireless UE.