You have implemented an 802.11ax WLAN for a customer. All APs are four stream HE APs. The customer states that it is essential that most of the clients can use the OFDMA modulation scheme. What do…

The correct answer is A. The clients that must support OFDMA must also be upgraded to 802.11ax. OFDMA is a new modulation scheme introduced in 802.11ax that allows multiple users to share the same channel by dividing it into smaller subchannels called resource units (RUs). This improves the efficiency and capacity of the WLAN by reducing contention and overhead. However…

Wireless Standards and Organizations

Question

You have implemented an 802.11ax WLAN for a customer. All APs are four stream HE APs. The customer states that it is essential that most of the clients can use the OFDMA modulation scheme. What do you tell the customer?

Options

AThe clients that must support OFDMA must also be upgraded to 802.11ax
BOFDMA is an optional feature of 802.11ax and most APs don't even support it
CAll 5 GHz PHYs use OFDM modulation, so you will achieve OFDMA everywhere in 5 GHz
DIf the devices support 802.11ac, they can be updated to support OFDMA through driver upgrades

How the community answered

(53 responses)

A
77% (41)
B
4% (2)
C
13% (7)
D
6% (3)

Explanation

OFDMA is a new modulation scheme introduced in 802.11ax that allows multiple users to share the same channel by dividing it into smaller subchannels called resource units (RUs). This improves the efficiency and capacity of the WLAN by reducing contention and overhead. However, to use OFDMA, both the AP and the client must support 802.11ax and negotiate the parameters of the subchannel allocation. Therefore, the customer needs to upgrade the clients that require OFDMA to 802.11ax devices.

Topics

#802.11ax#OFDMA#client requirements#HE PHY

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