This paper investigates automatic repeat request(ARQ)schemes to meet these new challenges.

文章研究了自动重发请求（ARQ）机制，来满足这些新的要求。

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Automatic repeat request (ARQ) schemes and transport control protocol (TCP) are often used as error-control techniques at the link layer and at the transport layer, respectively.

自动重传请求(ARQ)和传输控制协议(TCP)经常被分别用作链路层和传输层的错误控制机制。

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Automatic Repeat Request (ARQ) might be used in error control technology.

纠错技术中可能用到自动重发请求(ARQ)。

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