Does hidden node problem more significant due to large coverage, so more collision will occur?
In CSMA, collision occurs when both clients transmit at the same time because they can’t hear each other and the RTS/CTS mechanism is disabled. Since A8 has 4-sector architecture and each sector has dedicated radio, the hidden node problem is limited to within a single sector. The average client distance within a sector is statistically much less than omni antenna coverage, so the probability of hidden node is reduced. A8 also has hidden node collision avoidance algorithm because of multiple receive capability, one of the collided packets received can be selected, whereas standard single radio AP will neglect all the collided packets.