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Hidden node problem
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=== Protocol enhancement === There are several software implementations of additional protocols that essentially implement a [[Polling (computer science)|polling]] or [[token passing]] strategy. Then, a master (typically the access point) dynamically polls clients for data. Clients are not allowed to send data without the master's invitation. This eliminates the hidden node problem at the cost of increased latency and less maximum throughput. The Wi-Fi [[IEEE 802.11 RTS/CTS]] is one handshake protocol that is used. Clients that wish to send data send an RTS frame, the access point then sends a CTS frame when it is ready for that particular node. For short packets the overhead is quite large, so short packets do not usually use it, the minimum size is generally configurable.
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