NRB is the maximum number of RBs for a given Channel bandwidth and sub-carrier spacing defined in Table 5.3.2-1.
RBStart,Low = max(1, floor(LCRB/2))
where max() indicates the largest value of all arguments and floor(x) is the greatest integer less than or equal to x.
RBStart,High = NRB – RBStart,Low – LCRB
The RB allocation is an Inner RB allocation if the following conditions are met:
RBStart,Low ≤ RBStart ≤ RBStart,High, and
LCRB ≤ ceil(NRB/2)
where ceil(x) is the smallest integer greater than or equal to x.
An Edge RB allocation is the one for which the RB(s) is (are) allocated at the lowermost or uppermost edge of the channel with LCRB ≤ 2 RBs.
The RB allocation is an Outer RB allocation for all other allocations which are not an Inner RB allocation or Edge RB allocation.
