Explicit Congestion Notification; ECN
Technical term in computer networking; a mechanism for end-to-end notification of network congestion without dropping packets.
Explicit Congestion Notification is used for congestion control in TCP/IP networks.
Compound of 明示 (explicit), 輻輳 (congestion), and 通知 (notification), directly translating the English term 'Explicit Congestion Notification'.