ARQ in wireless networks

Automatic Repeat reQuest (ARQ) is a method used in wireless networks to ensure data reliability. When data is sent from one device to another, ARQ checks if the receiver got it correctly. If errors are detected or parts are missing, the receiver requests the sender to resend the specific data. This process repeats until the data arrives correctly, reducing errors due to wireless interference or signal issues. ARQ helps maintain accurate communication without requiring the sender to assume every piece is perfect, improving overall network performance and data integrity.