Key Points Measures delay in a communication or processing path Includes propagation, queueing, and processing components Important for real-time and interactive services Often evaluated alongside jitter and throughput Aggregate measure that can span multiple system layers depending on context Definition…
Key Points Ground site for satellite communications and gateway operations Houses antennas and supporting communications equipment Enables uplink and downlink functions Part of the ground segment infrastructure Core facility in satellite systems, broadcast distribution, and gateway operations Subject to constraints…
Key Points Lowers signal frequency for processing Common in receive chains Mixes incoming RF signal with a local oscillator to produce lower output frequency Used in satellite receivers, radios, and microwave receive chains Standard step in RF reception and signal…
Key Points Uses direct node-to-node links instead of hub-based paths Reduces dependency on ground or central hub paths Common in mesh and multi-node satellite networks Improves path flexibility and resilience in distributed transport systems Requires topology awareness and dynamic link…
Key Points Centralized network monitoring and response Tracks alarms, performance, and incidents Coordinates troubleshooting, escalation, and service continuity Primary use in telecom and service operations Definition Network Operations Center is the operational facility that monitors, manages, and responds to events…
Key Points Software-based implementation of a network function Deployed on virtualized or cloud infrastructure instead of dedicated hardware Allows functions such as routing, firewalling, or optimization to be delivered in software form Enables flexible deployment, scaling, and management of network…
Key Points Port Exhaustion is the depletion of available ports for new transport sessions Operates across network and system environments Prevents new session creation even when other network capacity remains Occurs in NAT gateways, proxies, and high-connection networks Definition Port…
Key Points Receives and retransmits signals Often changes frequency or channel Used in satellite and radio relay systems Fundamental to bent-pipe and regenerative payload architectures Constraints include gain, linearity, noise, frequency plan, and isolation Failure modes include overload, intermodulation, frequency…
Key Points Uses satellite links as part of mobile access Targets standard or near-standard cellular devices Extends coverage beyond terrestrial network reach Requires coordination between space and mobile infrastructure Depends on coordination between space segment resources, mobile network integration, and…
Key Points Measures delivered data rate Can differ from nominal bandwidth Affected by overhead and congestion Used in network and system performance analysis Accounts for protocol overhead, congestion, retries, and other losses Definition Throughput is the actual amount of data…
