MUOS Middleware Priority Queuing and SNMP Channel Access
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Solution Overview
Problem
The Mobile User Object System (MUOS) group service has limited capabilities, including a restricted data rate and half-duplex operation, which restricts efficient data transmission and collision avoidance in tactical communication environments.
Innovation Solution
A middleware solution that monitors outgoing data for priority levels, queues data based on priority, and uses Secure Network Management Protocol (SNMP) traps to determine channel availability, ensuring efficient data transmission and collision avoidance by forwarding queued data when the channel is available.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If group service is used for data transmission in MUOS, then global coverage and tactical communication capability are provided, but data rate is limited to 9600 bits per second and transmission efficiency is reduced
Solution Approach 1:
The system performs preliminary actions by monitoring outgoing data in advance, determining priority levels before transmission, and queuing data packets according to priority. This preparation allows the system to rapidly transmit high-priority data when channel capacity becomes available, improving overall transmission efficiency without requiring higher raw data rates
Solution Approach 2:
A middleware component is introduced as an intermediary between the application layer and the MUOS group service. This middleware monitors data, determines priority levels, queues packets, and manages channel access by listening for SNMP traps indicating channel availability. The intermediary optimizes data transmission through intelligent queuing and timing, effectively increasing productivity within the constrained data rate
2Reliability
If half-duplex operation is used in group service, then channel access is simplified, but collision avoidance capability and simultaneous transmission capability are reduced
Solution Approach 1:
The system implements feedback mechanisms by monitoring SNMP traps that indicate when the group channel becomes available for transmission. This feedback loop allows the middleware to detect channel status changes and timing out events, enabling intelligent decisions about when to transmit queued data. The feedback-based approach improves collision avoidance by ensuring transmissions only occur when the channel is confirmed available
Solution Approach 2:
The middleware performs preliminary monitoring and queuing actions before channel availability is confirmed. By preparing data queues in advance and continuously monitoring for SNMP traps indicating channel availability, the system can rapidly transmit high-priority data when the channel opens, improving reliability without requiring complex real-time channel access protocols
3Productivity
If priority-based queuing is implemented, then data transmission efficiency is improved, but system complexity increases
Solution Approach 1:
The system segments outgoing data into distinct priority queues based on determined priority levels. This segmentation allows the middleware to manage different types of data (high-priority control messages versus lower-priority payload data) separately, transmitting high-priority data first when channel capacity is available. The segmentation approach improves productivity by ensuring critical data is transmitted efficiently while maintaining manageable system complexity through organized queue structures
Data Source
AI summary
Methods performed by a host platform operable in a Mobile User Objective System (MUOS) network are provided herein. A method according to some examples may include monitoring for outgoing data from a client, parsing the outgoing data to determine a priority level associated with the outgoing data, and queuing the outgoing data based on the priority level. Some methods may include monitoring for Secure Network Management Protocol (SNMP) traps to determine a floor status associated with an over-the-air interface. In some methods, if an SNMP trap is received indicating that the floor status associated with the over-the air interface is available, the queued outgoing data may be forwarded to a terminal for transmission via the over-the-air interface.