In a high-density network design, which technology best minimizes contention overhead by dedicating subcarriers to clients?

In a high-density network design, which technology best minimizes contention overhead by dedicating subcarriers to clients?

• A. OFDMA
• B. MU-MIMO
• C. QWMM
• D. Channel Bonding

Answer: (A)

Dedicating subcarriers to individual clients is what OFDMA does. It splits the wireless channel into many small frequency resources and assigns distinct portions to different users. In a high-density environment, this means each client has its own slice to transmit, so many devices aren’t competing for the exact same spectrum at the same time. That reduces contention overhead and improves efficiency, latency, and predictable performance. MU-MIMO, while powerful, serves multiple users using spatial streams on the same frequency resources rather than giving each user a separate frequency slice, so contention isn’t minimized in the same per-user way. Channel Bonding simply widens the channel, which can increase overall bandwidth but doesn’t allocate dedicated subcarriers to individual clients. QWMM isn’t a standard per-user subcarrier allocation approach. So the best answer for minimizing contention overhead through subcarrier dedication is OFDMA.

Dedicating subcarriers to individual clients is what OFDMA does. It splits the wireless channel into many small frequency resources and assigns distinct portions to different users. In a high-density environment, this means each client has its own slice to transmit, so many devices aren’t competing for the exact same spectrum at the same time. That reduces contention overhead and improves efficiency, latency, and predictable performance.

MU-MIMO, while powerful, serves multiple users using spatial streams on the same frequency resources rather than giving each user a separate frequency slice, so contention isn’t minimized in the same per-user way. Channel Bonding simply widens the channel, which can increase overall bandwidth but doesn’t allocate dedicated subcarriers to individual clients. QWMM isn’t a standard per-user subcarrier allocation approach. So the best answer for minimizing contention overhead through subcarrier dedication is OFDMA.