The code was changing the rnti in the red-black tree without
removing/reinserting the context. This is wrong because the
rnti is a key of the red-black tree and you cannot change the
key in a stored item at will.

There are also modifications of the function mac_eNB_rrc_ul_failure
which has to remove the UE in any case.

And rrc_mac_remove_ue has been changed for the case where
the UE is not found.

The distinction common space/user space still requires some
careful examination.

if you compile *without* T it fails because the T macro is interpreted
as a function call

removed some traces that flooded the screen. Added UE information in PHY/MAC/RRC to indicate status of active/failing UEs every 10.24 seconds.

changed threading (acqusition is slot based). removal of eNB_thread. timing all based on received timestamp.

bugfixing for UL. Remaining problems: CCE allocations in subframe 5 lead to occasional illegal DCI allocations (affects UL DCI which is missed by UE). waveform compliance with CQI in ULSCH.

added hotfix for DCCH bad size limitation (to be checked after merge with develop).  Changed UL idle scheduling to improve 5MHz performance, changed DCI aggregation for ue-specific DCIs (reduces contention with SI and RA in subframe 5 for 5 MHz). Added RRC timer for UE release which cleans L1.  Still issues in 10 MHz throughput with TCP. 5 MHz seems almost fine.

it was at the wrong place
it was also wrong (< instead of <=)

added Timing advance tracing to .vcd output. Increase maximum UL RB count to 45. Measured UL throughput @ 15 Mbit/s (40 PRBs).

changes in BSR handling in eNodeB. UL throughput on 5 MHz is 8 Mbit/s (mcs 19, 20 PRB). MCS 20 is not working for an unknown reason.