Four stations in an 802.11 LAN infrastructure network are in a polling list. The stations transmit 20 ms voice packets produced by 64 kbs voice codecs. The contention free period is set to 20 ms. Sketch a point-coordination frame transfer with the appropriate values for interframe spacings, NAV and data and ACK frames.
Transmission Delay
Data is an essential part of network communication. To effectively transmit data through all kinds of networks, it must be streamlined into smaller data packets. Instead of sending a whole file to the other side, these variably-sized packets are sent across the network path to reduce transmission latency. Once they reach their destination, these packets are reconstructed into a complete file. This process is called packet-switching.
Coding Theory
Code is an alternative representation of some information—like a word, image, sound, and so on—that follows a set of rules. While coding theory may refer to the practice of studying such codes and their applications, in recent years, the term pertains to error-correcting codes.
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