From cc7037d87e244b7dea68e5e93874a2b8b719902c Mon Sep 17 00:00:00 2001
From: Raymond Knopp <raymond.knopp@eurecom.fr>
Date: Wed, 7 Mar 2018 11:47:29 -0800
Subject: [PATCH] control code for SLSCH user-plane
---
openair1/PHY/LTE_TRANSPORT/defs.h | 2 +-
openair1/PHY/LTE_TRANSPORT/slsch.c | 57 +++++++++++++++++++++++++++++-
openair1/PHY/defs.h | 2 ++
3 files changed, 59 insertions(+), 2 deletions(-)
diff --git a/openair1/PHY/LTE_TRANSPORT/defs.h b/openair1/PHY/LTE_TRANSPORT/defs.h
index 312818251a..eb751dcc37 100644
--- a/openair1/PHY/LTE_TRANSPORT/defs.h
+++ b/openair1/PHY/LTE_TRANSPORT/defs.h
@@ -940,7 +940,7 @@ typedef struct {
typedef struct {
/// payload length
int payload_length;
- uint8_t payload[100];
+ uint8_t payload[100];
} SLDCH_t;
#define TTI_SYNC 0
diff --git a/openair1/PHY/LTE_TRANSPORT/slsch.c b/openair1/PHY/LTE_TRANSPORT/slsch.c
index 3e96a9b736..e55a404db7 100644
--- a/openair1/PHY/LTE_TRANSPORT/slsch.c
+++ b/openair1/PHY/LTE_TRANSPORT/slsch.c
@@ -32,6 +32,7 @@
#ifndef __LTE_TRANSPORT_SLSS__C__
#define __LTE_TRANSPORT_SLSS__C__
#include "PHY/defs.h"
+#include "pssch.h"
int64_t sci_mapping(PHY_VARS_UE *ue) {
SLSCH_t *slsch = ue->slsch;
@@ -419,6 +420,60 @@ void pscch_codingmodulation(PHY_VARS_UE *ue,int frame_tx,int subframe_tx,uint32_
}
+void slsch_codingmodulation() {
+
+
+}
+void check_and_generate_pssch(PHY_VARS_UE *ue,int frame_tx,int subframe_tx) {
+
+ AssertFatal(frame_tx<1024 && frame_tx>0,"frame %d is illegal\n",frame_tx);
+ AssertFatal(subframe_tx<10 && subframe_tx>0,"subframe %d is illegal\n",subframe_tx);
+ SLSCH_t *slsch = ue->slsch;
+ AssertFatal(slsch!=NULL,"SLSCH is null\n");
+ uint32_t O = ue->slsch->SL_OffsetIndicator;
+ uint32_t P = ue->slsch->SL_SC_Period;
+ uint32_t absSF = (frame_tx*10)+subframe_tx;
+ uint32_t absSF_offset,absSF_modP;
+ absSF_offset = absSF-O;
+
+ if (ue->slsch_active == 0) return;
+
+ if (absSF_offset < O) return;
+
+ absSF_modP = absSF_offset%P;
+
+ // This is the condition for short SCCH bitmap (40 bits), check that the current subframe is for SLSCH
+ if (absSF_modP < 40) return;
+
+ absSF_modP-=40;
+
+ AssertFatal(slsch->time_resource_pattern < TRP8_MAX,
+ "received Itrp %d: TRP8 is used with Itrp in 0...%d\n",
+ slsch->time_resource_pattern,TRP8_MAX);
+
+ // Note : this assumes Ntrp=8 for now
+ if (trp8[slsch->time_resource_pattern][absSF_modP&8]==0) return;
+ // we have an opportunity in this subframe
+ if (slsch->rvidx == 0) { // first new transmission in period, get a new packet
+ // call to MAC to update data pointer and length
+ // mac_update_slsch();
+ if (slsch->payload_length==0) {
+ ue->slsch_sdu_active = 0;
+ return;
+ }
+ ue->slsch_sdu_active = 1;
+ slsch_codingmodulation(ue,frame_tx,subframe_tx);
+ slsch->rvidx=2;
+ }
+ else if(ue->slsch_sdu_active==1){
+ slsch_codingmodulation(ue,frame_tx,subframe_tx);
+ if (slsch->rvidx == 2) slsch->rvidx = 3;
+ else if (slsch->rvidx == 3) slsch->rvidx = 1;
+ else if (slsch->rvidx == 1) slsch->rvidx = 0;
+ else AssertFatal(1==0,"rvidx %d isn't possible\n",slsch->rvidx);
+ }
+}
+
void check_and_generate_pscch(PHY_VARS_UE *ue,int frame_tx,int subframe_tx) {
AssertFatal(frame_tx<1024 && frame_tx>0,"frame %d is illegal\n",frame_tx);
@@ -511,7 +566,7 @@ void generate_slsch(PHY_VARS_UE *ue,SLSCH_t *slsch,int frame_tx,int subframe_tx)
}
// check and flll SCI portion
check_and_generate_pscch(ue,frame_tx,subframe_tx);
- // check_and_generate_pssch(ue,frame_tx,subframe_tx);
+ check_and_generate_pssch(ue,frame_tx,subframe_tx);
}
diff --git a/openair1/PHY/defs.h b/openair1/PHY/defs.h
index f85833fad7..1edc6d6c23 100644
--- a/openair1/PHY/defs.h
+++ b/openair1/PHY/defs.h
@@ -1253,6 +1253,8 @@ typedef struct {
SL_chan_t sl_chan;
SLSCH_t *slsch;
SLSCH_t slsch_rx;
+ int slsch_active;
+ int slsch_sdu_active;
int slcch_received;
uint8_t sidelink_l2_emulation;
//Paging parameters
--
2.26.2