How many UEs can be simultaneously allocated RBs in downlink at a TTI?

[elvinlife]

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Thanks for checking this issue.

Currently I'm developing a more advanced downlink RB scheduler for srsRAN, which can allocate radio resources in both time and frequency domain (instead of only time domain like existing two schedulers). Allocating RBs in frequency domain can bring some benefits, such as taking subband channel quality difference into consideration for higher throughput. However, it seems that there's an upper bound limitation on the number of UEs can be simutaneously scheduled in a TTI, which is related to the DCI encoding in PDCCH.

Can I ask how many UEs can be scheduled RBs in a TTI? If there's a limitation in PDCCH, can we configure srsRAN to extend it? Thanks.