mirror of https://github.com/PentHertz/srsLTE.git
Force retx for mcs>29 and new tb if rv=0 && mcs<29
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@ -52,7 +52,6 @@
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#define TTIMOD_SZ (((2*HARQ_DELAY_MS) < 10)?10:20)
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#define TTIMOD(tti) (tti%TTIMOD_SZ)
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#define MOD_N_PROC (2*HARQ_DELAY_MS-8)
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#define ASYNC_DL_SCHED (HARQ_DELAY_MS <= 4)
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// Cat 3 UE - Max number of DL-SCH transport block bits received within a TTI
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@ -259,7 +259,7 @@ private:
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memcpy(&cur_grant, &grant, sizeof(Tgrant));
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// If data has not yet been successfully decoded
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if (!ack) {
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if (!ack || (grant.rv[tid]==0 && grant.phy_grant.dl.mcs[tid].idx < 29)) {
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// Instruct the PHY To combine the received data and attempt to decode it
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if (pid == HARQ_BCCH_PID) {
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@ -347,9 +347,10 @@ private:
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// Determine if it's a new transmission 5.3.2.2
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bool calc_is_new_transmission(Tgrant grant) {
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if ((grant.ndi[tid] != cur_grant.ndi[tid]) || // 1st condition (NDI has changed)
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if (grant.phy_grant.dl.mcs[tid].idx < 28 && // mcs 29,30,31 always retx regardless of rest
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((grant.ndi[tid] != cur_grant.ndi[tid]) || // 1st condition (NDI has changed)
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(pid == HARQ_BCCH_PID && grant.rv[tid] == 0) || // 2nd condition (Broadcast and 1st transmission)
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is_first_tb) // 3rd condition (first TB)
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is_first_tb))
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{
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is_first_tb = false;
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is_new_transmission = true;
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@ -135,7 +135,7 @@ private:
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demux demux_unit;
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/* DL/UL HARQ */
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dl_harq_entity<MAC_NOF_HARQ_PROC+MOD_N_PROC, mac_grant_t, tb_action_dl_t, srslte_phy_grant_t> dl_harq;
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dl_harq_entity<MAC_NOF_HARQ_PROC, mac_grant_t, tb_action_dl_t, srslte_phy_grant_t> dl_harq;
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ul_harq_entity<MAC_NOF_HARQ_PROC, mac_grant_t, tb_action_ul_t, srslte_phy_grant_t> ul_harq;
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/* MAC Uplink-related Procedures */
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@ -481,11 +481,7 @@ bool phch_worker::decode_pdcch_dl(srsue::mac_interface_phy::mac_grant_t* grant)
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/* Fill MAC grant structure */
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grant->ndi[0] = dci_unpacked.ndi;
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grant->ndi[1] = dci_unpacked.ndi_1;
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if (tti < MOD_N_PROC) {
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grant->pid = ASYNC_DL_SCHED?dci_unpacked.harq_process:tti+(2*HARQ_DELAY_MS);
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} else {
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grant->pid = ASYNC_DL_SCHED?dci_unpacked.harq_process:(tti%(2*HARQ_DELAY_MS));
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}
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grant->n_bytes[0] = grant->phy_grant.dl.mcs[0].tbs / (uint32_t) 8;
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grant->n_bytes[1] = grant->phy_grant.dl.mcs[1].tbs / (uint32_t) 8;
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grant->tti = tti;
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