Request. In each unmatched IM, each VOMQ, that has qð< nÞ
cells and whose corresponding OM is unmatched, sends
q requests to q IM arbiters starting from the one that should
appear in SCF, i.e., m ¼ ðl k þ 1Þmodn, where m is the
index of the IM arbiter, k is the index of the IM and l is the
index of the OM. This makes sure that the requests are
desynchronized.