802.11ac adds more elaborate channeling structure and new techniques to raise wireless data rates. 802.11ac is slated to arrive in two Waves – Wave-1 this year and Wave-2 next year. While the decibel level in the market is raised to prematurely hasten the 802.11ac upgrade cycle, the reality is that this is just the beginning of Wave-1. Many people may not see justification to jump on Wave-1 due to a myriad of practical, network engineering, and interoperability issues that Wave-1 faces. Also important is the fact that Wave-1 lacks the complete feature set of 802.11ac and new radios will be required when Wave-2 hits with those features. All this points to Wave-2 next year to be realistic timeline for large scale network upgrade to 802.11ac.
In any case, increased complexity of channelization and MAC in 802.11ac will result in increased complexity of RF planning over and above 802.11n. Improperly planned networks can result in undesirable side effects such as co-channel interference and slow talkers, which can take away the advantages that the new 802.11ac features have to offer. Also, the 802.11ac network will be expected to deliver higher capacity and increased reliability than the incumbent. As a result, it is only natural that concrete benchmarking with what-if analyses will have to be done prior to investing in the network upgrade. The cost of 802.11ac APs will also be higher - at least in the beginning. Accordingly, overprovisioning is undesirable.
- See more at: http://blog.airtightnetworks.com/dont-deploy-802-11ac-without-thorough-rf-planning/comment-page-1/#comment-161484
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