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automatic repeat request (ARQ)

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automatic repeat request (ARQ)

Automatic repeat request (ARQ) is a protocol for error control in data transmission. When the receiver detects an error in a packet, it automatically requests the transmitter to resend the packet. This process is repeated until the packet is error free or the error continues beyond a predetermined number of transmissions. ARQ is sometimes used with Global System for Mobile (GSM) communication to guarantee data integrity.

Related glossary terms: MBone (Multicast Internet), time-to-live (TTL), care-of address, TCP/IP (Transmission Control Protocol/Internet Protocol), EIGRP (Enhanced Interior Gateway Routing Protocol), passive FTP, route summarization (route aggregation), registered port numbers, IPX (Internetwork Packet Exchange), frame

Contributor(s): Sandi Seidle

This was last updated in June 2007

Posted by: Margaret Rouse

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