Bugzilla – Bug 1630
spurious RX packets in DlRlcStats
Last modified: 2013-05-31 10:01:17 UTC
Reported on ns-3-users: https://groups.google.com/forum/?fromgroups=#!topic/ns-3-users/mObbn4aD0vk Reproduceable with ns-3-dev changeset: 9694:eb7335c2423c $ ./waf --run lena-dual-stripe --command="%s --epc=1 --macroUeDensity=0 --nMacroEnbSites=0 --nBlocks=1 --simTime=1 --homeEnbDeploymentRatio=0.025 --homeEnbActivationRatio=1" Waf: Entering directory `/locale/ns-3-dev/build' Waf: Leaving directory `/locale/ns-3-dev/build' 'build' finished successfully (2.635s) nicola@pcnbaldo:/locale/ns-3-dev$ cat DlRlcStats.txt % start end CellId IMSI RNTI LCID nTxPDUs TxBytes nRxPDUs RxBytes delay stdDev min max PduSize stdDev min max 0 0.25 1 1 1 4 229 241841 227 239729 0.003 0 0.003 0.003 1056.07 232.623 81 2196 0.25 0.5 1 1 1 4 249 262944 250 264000 0.003 0 0.003 0.003 1056 0 1056 1056 0.5 0.75 1 1 1 4 249 262944 250 264000 0.003 0 0.003 0.003 1056 0 1056 1056 0.75 1 1 1 1 4 249 262944 250 264000 0.003 0 0.003 0.003 1056 0 1056 1056 total nTxPDUs: 976 total nRxPDUs: 977 note that by enabling PHY traces it is evident that 977 TBs are actually transmitted, and no RX error nor HARQ retransmission occurs.
Seems a bug in RadioBearerStatsCalculator, in fact using --ns3::RadioBearerStatsCalculator::EpochDuration=1s it reports a total of 979 TX PDUs, and with --ns3::RadioBearerStatsCalculator::EpochDuration=0.1s it reports a total of 970 TX PDUs The number of RX PDUs reported is the same in all cases.
changeset: 9819:383faf43ae39 tag: tip user: Nicola Baldo <nbaldo@cttc.es> date: Fri May 31 15:54:42 2013 +0200 summary: fixed Bug 1630 - spurious RX packets in DlRlcStats