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gNB: use 2 * K2 for contention_resolution_timer, as the timer starts with Msg2 transmission and ends with Msg4 ACK reception

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Thomas Schlichter
2024-06-03 11:54:55 +02:00
parent 0ce0282238
commit be41a4ea60
1 changed files with 4 additions and 4 deletions
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openair2/LAYER2/NR_MAC_gNB/gNB_scheduler_RA.c
+4 -4
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@@ -542,10 +542,10 @@ static void start_ra_contention_resolution_timer(NR_RA_t *ra, const long ra_Cont
// ra-ContentionResolutionTimer ENUMERATED {sf8, sf16, sf24, sf32, sf40, sf48, sf56, sf64}
// The initial value for the contention resolution timer.
// Value sf8 corresponds to 8 subframes, value sf16 corresponds to 16 subframes, and so on.
// We add K2 because we start the timer in the DL slot that schedules Msg3/Msg3 retransmission
ra->contention_resolution_timer = ((((int)ra_ContentionResolutionTimer + 1) * 8) << scs) + K2;
LOG_D(NR_MAC,
"Starting RA Contention Resolution timer with %d ms + %d K2 (%d slots) duration\n",
// We add 2 * K2 because the timer runs from Msg2 transmission till Msg4 ACK reception
ra->contention_resolution_timer = ((((int)ra_ContentionResolutionTimer + 1) * 8) << scs) + 2 * K2;
LOG_I(NR_MAC,
"Starting RA Contention Resolution timer with %d ms + 2 * %d K2 (%d slots) duration\n",
((int)ra_ContentionResolutionTimer + 1) * 8,
K2,
ra->contention_resolution_timer);