Дослідження впливу довжини пакетів верхніх рівнів на ефективну швидкість передачі для стандарту WI-FI

Abstract

In this paper was studied the influence of the length of the frame of the upper levels of the OSI model for effective information rate used by channels with interference and without interference for WIFI network 802.11n. Examined frame format and structure MSDU and MPDU that are formed at the physical and data link layer. Were proposed structure of the network based on wireless access point, subscriber device with wired channel and subscriber device with a wireless channel. During the conducted research found that for maximum transfer rate can use the top­level staff of no more than 4096 bytes for band channel 20 MHz and 40 MHz for the band for the 802.11 Wi­Fi standard. Transmission rate in channel of 40 MHz to fall more for frames less of 4096 bytes not above than two times, in contrast to the 20 MHz band, where the fall in some cases reached more than four times for action interference noise.