Add the possibility to use UL slots in TDD pattern 2. For simplicity, we
require the mixed slot to be of the same symbols in pattern 1 & 2. For
UL slots, simply use the right amount of UL TDAs, depending on which
number of UL slots among pattern 1 & 2 is bigger.
One complication is the TDA for the mixed slot. The current code assumes
that k2 has to be equal or larger than (number of DL slots +1) (because
the spec says min k2=2, but we might want to schedule DSUUU). Then,
there could be for instance the following cases:
- only pattern 1: DSUUU DSUUU ...: the mixed slot has to be reached an
entire period in advance
- pattern 1 & 2: DSUUU DDDDD: normal mixed slot k2, e.g., like for 7DS2U
- pattern 1 & 2: DSUUU DDDSU: the mixed slot has to be reached
N_ul2+N_dl1+1 slots in advance
I can't think of more cases right now. To avoid unscheduled slots, I put
an assertion (which could also trivially be taken out).
Robert Schmidt
c24673798a