Key Points Serves multiple users or services simultaneously Shares access capacity across a common terminal Used in access and satellite environments Requires capacity sharing, traffic controls, and access scheduling Lower hardware cost offset by increased contention and traffic management complexity…
Key Points Carries traffic in the forward direction from infrastructure to endpoint Important in satellite and access networks Often called the downlink from network to user perspective Service delivery often depends on robust forward link performance Operates across satellite communications,…
Key Points Reflects directional concentration of energy Affects transmit and receive performance Important in link budgets and coverage planning Influenced by design, size, and frequency Operates through antenna geometry and radiation pattern shaping Definition Antenna Gain is a measure of…
Key Points Supports communication in Aviation environments May involve air-to-ground, air-to-air, or satellite links Used for operational and passenger services Requires aviation-specific regulatory and mobility support Covers flight operations, maintenance data, crew communications, aircraft telemetry, and passenger internet services Definition…
Key Points Arises from shared channel use Common in wireless and satellite systems Can reduce capacity and quality Managed through reuse planning and coordination Central concern in spectrum reuse and coordination Definition Co Channel Interference is interference that occurs when…
Key Points Reduces repeated network transfers Improves access during limited connectivity Supports software, media, documentation, and operational reference data Enables local reuse of data in bandwidth-constrained maritime environments Balances local performance against data freshness and storage capacity Definition Content Caching…
Key Points Maps many internal hosts to one external address Uses port numbers to distinguish sessions Common in home and enterprise gateways Extends basic NAT behavior Shares limited public address space across multiple private endpoints Maintains translation state to associate…
Key Points Extends communications coverage from the air Useful where terrain or distance blocks direct links Can support temporary coverage or emergency response Operates as an airborne repeater or intermediate network node Enables rapid deployment in difficult environments Definition UAV…
Key Points One-to-many communication model Used in radio, TV, and data distribution Optimized for shared delivery rather than interactivity Common in satellite and terrestrial distribution Definition Broadcast Service is a communication service that sends the same content from one source…
Key Points Refers to the receive direction at the user side Used in wireless, satellite, and broadcast systems Pairs with uplink in bidirectional links Affects coverage and downlink capacity planning Performance determines how well users receive data, media, or service…
