Chapter 8
UHF RFID Protocols
8.1 What a Protocol Droid Should Know
Every communications process is based on agreements about certain conventions or agreements about how messages are to be sent, and what they mean. A communications protocol must address questions like:
• Medium: what is the medium by which messages are to be exchanged? People use the media of speech, writing, and pantomime to communicate directly with each other. Machine-to-machine communication can be based on electrical signals carried by a cable, light in a silica fiber, ultrasound, or radio waves.
• Message format: speech can be formatted in English, Swedish, Japanese, Hindi, or any of the wonderful panoply of languages that have arisen over the millennia since humans invented ...
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