Cellular Network Infrastructure » Radio Access Network » OsmoBSC

Also appears on RB2308:

<0000> chan_alloc.c:208 (bts=0) bogus channel load sample (used=0 / total=0)

On the RBS those should clear up when it's actually running.

also appears when using an InSite.

I think there is a wrong assumption in the code that prints the message. A total count of logical channels of '0' is perfectly valid for any BTS until it is operational.

The code tries to implement this in trx_is_usable() which is not implemented for most BTS models:

bool trx_is_usable(const struct gsm_bts_trx *trx)
{
        /* FIXME: How does this behave for BS-11 ? */
        if (is_ipaccess_bts(trx->bts)) {
                if (!nm_is_running(&trx->mo.nm_state) ||
                    !nm_is_running(&trx->bb_transc.mo.nm_state))
                        return false;
        } else if (is_ericsson_bts(trx->bts)) {
                /* The OM2000 -> 12.21 mapping we do doesn't have separate bb_transc MO */
                if (!nm_is_running(&trx->mo.nm_state))
                        return false;
        }

        return true;
}

Since this is highly BTS model specific, the function should actually likely become part of bts_model_*, where it needs to be implemented for all BTS models. That requires testing on all of those.

An interim patch simply disables the message for the 'total == 0' situation: https://gerrit.osmocom.org/c/osmo-bsc/+/19132