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6851 Commits (e654062a7a21d78216e99ea7c56c86c6fdbb5c9c)
 

Author SHA1 Message Date
Xavier Arteaga a6ac80cfbf Initial NR DL DCI Packing/Unpacking 4 years ago
Francisco Paisana fdec451a9d disable mcs>20 if eNB supports UL 64QAM but UE doesn't 4 years ago
Francisco Paisana bc00abeeb8 fix phy configuration of UL 64QAM 4 years ago
Francisco Paisana b369d6d5d5 consider enb sib config when activating UL 64QAM 4 years ago
Francisco Paisana bf7c587e4f add UL 64QAM support to eNB RRC and scheduler 4 years ago
Andre Puschmann 5f7f818abb pdu: fix bug in BSR table lookup 
the bug causes the BSR to return a bsr_idx of 0, i.e. no data
pending, when the buff_size was reported to be 1 B only.

Instead, the UE should return BSR idx 1, i.e. between 0 < BSR <= 10.
 4 years ago
Andre Puschmann e227fec3d8 pdu_test: add rigerous test for LBSR content 
* make sure upper and lower edges of Table 6.1.3.1-1 in 36.321 are correct
* fix existing BSR test vectors (verified with Wireshark)
 4 years ago
Andre Puschmann cd1ca4d095 mac_test: add LBSR test 
the test checks the correct packing of an LBSR when a SDU couldn't
be added before. This happended because RLC couldn't provide a new PDU.
 4 years ago
Andre Puschmann 286844b3dd mac_pdu: reset subheader state when deleting from PDU 
when packing MAC PDUs, adding a new SDU might fail, for example
because RLC couldn't provide a new PDU. The muxer then needs
to delete the subheader from the PDU again.

When adding a padding BSR at the end, the same subheader is again
used to store the BSR, so any state in that subheader should be removed.

In the particular case, this was causing an issue when logging a LBSR
because the LCG buffer states are printed using the payload buffer,
which was still pointing to some memory that was used when trying
to add the new RLC PDU in the beginning.
 4 years ago
Andre Puschmann 035d989737 pdu: fix unpacking of LCG2 of LBSR MAC CE 
LBSR packing is fine but this makes the eNB do wrong things
because it thinkgs LCG2 has no or too much data to send.

LCG2 is our default LCG for DRB1. One occasion we saw the issue
is doing full rate TCP DL which requires quite a bit of ACK traffic
back to the sender. With the BSR for LCG2 being wrong, providing
UL grants was delayed and so the TCP DL throuhgput was very low.

In the log below we see that the buff_size[2]=1 so there is data to send.
Interestingly, the packing was correct so Wireshark displays it correctly.
But the unpacking not, as can be seen in the MAC log below which reports
0 buffer state for all LCGs

22:08:54.804792 [MAC ] [I] [ 5084] pdu_get: sdu_len=1212, channel.sched_len=1213, bsr.buff_size[2]=1
22:08:54.804840 [MAC ] [I] [ 5084] UL LCID=3 len=1212 LBSR: b=0 0 0 0
 4 years ago
Xavier Arteaga cf55eb4c4f Improved comments 4 years ago
Xavier Arteaga e8f94c40b8 Added LDPC codeblock segmentation 4 years ago
Xavier Arteaga fc3d154fe3 Fix compilation 4 years ago
Xavier Arteaga 736e6db616 Initial resource allocation for NR 4 years ago
Xavier Arteaga 0439161de6 Removed modulation enum from LDPC RM 4 years ago
David Rupprecht a8074fe39d Fixed TTCN UE for starting a service request in rrc_idle 4 years ago
Pedro Alvarez 454162cea7 Deleted nas_interface_stack. 4 years ago
Pedro Alvarez 38822873e8 Stop T3402 4 years ago
Pedro Alvarez 604e79214d Changed NAS is_attached interface to is_registered. 4 years ago
Pedro Alvarez 5649ecaab0 Renamed nas_common.h to nas_config.h. Moved emm_state_t into nas_emm_state.h and nas_emm_state.cc. 4 years ago
Pedro Alvarez 96f39da5d7 Fixes for airplane simulator. 4 years ago
Pedro Alvarez 14844a168a Created new class to hold all NAS states for the NAS state machine. Added EMM-DEREGISTERED substates and EMM-REGISTERED substates. 
Decoupled PLMN selection, attach request and service request. Removed RRC connect procedure from NAS.
 4 years ago
Francisco Paisana ff7811c822 remove unused member variable from sched tester 4 years ago
Francisco Paisana 3407ac6741 fix ca sched test 4 years ago
Francisco Paisana e8ac98d06f added extra tbs and dci aggregation level checks to sched test suite 4 years ago
Francisco Paisana 5467ee9f83 moved more tests to ue-dedicated test suite 4 years ago
Francisco Paisana 992ea7fd29 moved UE-dedicated RA sched test to separate test suite file. 4 years ago
Francisco Paisana d5f6ccc0c4 integrated UL UE-dedicated sched tests in random test 4 years ago
Francisco Paisana eb327183d3 moved harq tests from scheduler_test_common.cc to separate test suite file. Created a class ue_sim, whose role is to emulate a UE behavior 4 years ago
Andre Puschmann 2be85217fd mac,ue: reset demux when restting MAC 
this potentially fixes the issue we see during HO and RLF
under high DL load.

The issue happens because buffered DL PDUs are delivered to
RLC after reestablishing RLC that confuse the receiving
RLC entity bc the sequence numbers are very high, as opposed
to begin with zero again after reestablishment.
 4 years ago
Andre Puschmann 6773f6d02f pdu_queue: add reset method to empty queue 4 years ago
Francisco Paisana 64fca23eb3 extended dci content checks of DL and UL grants in the scheduler random tester. 4 years ago
Francisco Paisana 88105c1577 change the namespace of tti point helper functions for the eNB 4 years ago
Francisco Paisana 114932b4c6 extended common sched test suite api to multi carrier 4 years ago
Francisco Paisana f24e5aadaf clean common sched output tests 4 years ago
Ismael Gomez 67690136be Select strongest cell after cell search (#2001) 
* Select strongest cell in all frequencies when

* Change variable name
 4 years ago
Ismael Gomez 524453a6af Fixes N_pucch_cs allocation to avoid collision with SR 4 years ago
Ismael Gomez 13f1d65b24 Add missing current_tx_nb which was causing all in uplink to fail 4 years ago
Ismael Gomez 709d69d55f Reset rv_idx after an adaptive retx in UE 4 years ago
Ismael Gomez 8ed6345ff2 Do not reset softbuffer on each iteration 4 years ago
Andre Puschmann f155b7a5d5 rlc: fix stopping of poll retx timer (#2006) 
* rlc_am: add TC for pollRetx timer handling

* rlc_am: fix stopping of pollRetx timer

stopping the pollRetx timer when receiving a status PDU
without checking the acknowledged PDUs is wrong.

if an ACK for another PDU, for which the polling bit has been set,
is still pending, it won't be rescheduled until another
PDU is transmitted that again starts the pollRetx timer.

this fixes the issue with missing RLC AM segment retx in #1992,
and #2003
 4 years ago
Andre Puschmann 7cf919e2af Fix MAC PDU packing after sending Truncated BSR (#2004) 
* mac_test: add extended TBSR unit test

unit test to MAC UL packing after sending a TBSR

this fixes the MAC issues described in issue #2002

* mux: fix updating of LCG buffer state after packing PDU

we've previously lowered the buffer state of the LCG according
to the bytes that have been scheduled, but not according to
those that have been actually included in the PDU.

* proc_bsr: fix LCG buffer state updating for TBSR

when sending a TBSR do not update the internal buffer
state of the BSR proc.

This caused issues because the buffer state for all LCG that
are not included in the TBSR are set to zero, although at least
one LCG does have data to transmit.

* rlc_am: include LCID when logging retx of SN
 4 years ago
Andre Puschmann 1b97ba5300 benchmark_radio: fix duration and thread priority 
I noticed that the app didn't configure the process with
RT thread prio. But it then turned out that in order to do
that we need to actually spawn a new thread. Also a few other things
didn't work out of the box.

In summary the changes are:
* fix duration to support more than 120s
* move main functionality in thread
* set high priority for radio thread
* only return success if no radio errors occured
 4 years ago
Francisco Paisana 3ea47b645a changed the way the number of UL pending bytes is calculated in the scheduler 4 years ago
Ismael Gomez dfb389d68f srsenb: Use MCS from new grant when doing adaptive retx 4 years ago
Francisco Paisana 77d64f3ea5 add PDCCH alloc to UL retxs that resume the HARQ 4 years ago
Francisco Paisana d8203acd56 implement harq resuming functionality 4 years ago
Francisco Paisana 510959b50f update nr asn1 files, and asn1 tests 4 years ago
Andre Puschmann 082e002b67 nas: fix airplane mode simulation 
the current implementation was somehow broken after a
NAS refactor. It was undetected because we didn't really
use it.

this fixes the simulation by using a single timer to simulate
airplane mode transitions.
the timer is rearmed in the timer_expire() function
if the correspondig event is set.

Has been tested to work well with, e.g.:

--sim.airplane_t_on_ms 5000 --sim.airplane_t_off_ms 10000
 4 years ago
Francisco Paisana f927ccaf55 fix pusch grant allocation for cqi reporting in CA. 4 years ago