Title: What is wave 2? [Print this page] Author: GTAC-Sophia Time: 2022-10-28 17:28 Title: What is wave 2? Channels for wave 2 products would mostly move from 80-MHz (at the high end for Wave 1) to 160-MHz (80+80) bonded channels. Moving up to 160-MHz is good for bandwidth since it is similar to adding more lanes on a highway. Theoretically, using 160-MHz bandwidth means more users can be supported with better performance. However, operating at 160-MHz requires a clear channel and may mean that most AP's continue to use both 80-MHz and 40-MHz,even through the wave 2 switch.
Data rates for wave 2 products are expected to average around 2.5 Gbps, but real life may even be lower.
Wave 2 products introduced 4SS or 4 spatial streams and could increase performance by up to a third. This would require both AP's and clients to add an additional fourth antenna. In other words, if you don't have 802.11ac hardware on your client device, it won't matter.
One of the biggest upgr802.11ac wave 2ades in wave 2 products is related to MU-MIMO. This is the multi-user version of MIMO technology that allows a base station to transmit to multiple users (up to 4) at a time giving several clients simultaneous access to a channel. This means AP's can transmit to 4 single-stream devices such as 4 smartphones at once. The multi-user format is meant to boost user capacity. The MU-MIMO must be supported by both the AP and the client to be used since it relies on interoperable beamform. Some wave 1 products that use SU-MIMO have integrated beamform to improve the performance, making MU-MIMO less of a stretch.
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