================
What is missing?
================

* Scheduling resource restrictions

    * Must be "rectangle" in DL
    * First time than freq. in UL
* Control channel overhead

    * FCH / Preamble
    * MAPs
    * Ranging
    
* (Hybrid)ARQ
* 802.16m superframe
* Relays

.. _figure-wimac-what_is_missing:

.. figure:: images/what_is_missing.*