Commit ad1114c7 authored by Sandeep Kumar's avatar Sandeep Kumar

added more structural changes

parent 7b3fe853
......@@ -29,28 +29,19 @@
/*! \file PHY/LTE_TRANSPORT/if4_tools.c
* \brief
* \author Mauricio Gunther, Raymond Knopp, S. Sandeep Kumar
* \author Mauricio Gunther, S. Sandeep Kumar, Raymond Knopp
* \date 2016
* \version 0.1
* \company Eurecom
* \email: knopp@eurecom.fr, ee13b1025@iith.ac.in
* \email: knopp@eurecom.fr
* \note
* \warning
*/
#include "PHY/LTE_TRANSPORT/if4_tools.h"
/*
typedef struct data_block_type {
} data_block;
*/
// Define how data blocks are stored and transferred
/*
void allocate_data_block(long *data_block ,int length){
data_block = malloc(length*sizeof(long));
}
*/
void send_IF4(PHY_VARS_eNB *eNB, int subframe){
eNB_proc_t *proc = &eNB->proc;
......@@ -58,57 +49,138 @@ void send_IF4(PHY_VARS_eNB *eNB, int subframe){
//int subframe=proc->subframe_tx;
LTE_DL_FRAME_PARMS *fp=&eNB->frame_parms;
int i,j;
uint32_t i,j;
float *data_block = malloc(length*sizeof(long));
// Generate IF4 packet (for now DL) with frame status information
dl_packet = gen_IF4_dl_packet( /* ADD INFO and data_block pointer */ );
// find number of consecutive non zero in values in symbol
// NrOfNonZeroValues
// how many values does the atan function output?
for(i = 0; i <= fp->symbols_per_tti; i++){
for(j = 0; j < NrOfNonZeroValues; j=j+2){
symbol = eNB->common_vars.txdataF[0][0 /*antenna number*/][subframe*fp->ofdm_symbol_size*(fp->symbols_per_tti)]
data_block[j] = Atan(symbol[fp->ofmd_symbol_size - NrOfNonZeroValues + j -1])<<16 + Atan(symbol[fp->ofmd_symbol_size - NrOfNonZeroValues + j]);
data_block[j+NrOfNonZeroValues] = Atan(subframe[i][j+1])<<16 + Atan(subframe[i][j+2]);
// use memset?
}
}
/*
memset(&eNB->common_vars.txdataF[0][aa][subframe*fp->ofdm_symbol_size*(fp->symbols_per_tti)],
0,fp->ofdm_symbol_size*(fp->symbols_per_tti)*sizeof(int32_t));
}
*/
for(i=0; i<fp->symbols_per_tti; i++) {
// Do compression of the two parts and generate data blocks
symbol = eNB->common_vars.txdataF[0][0 /*antenna number*/][subframe*fp->ofdm_symbol_size*(fp->symbols_per_tti)]
data_block[j] = Atan(symbol[fp->ofmd_symbol_size - NrOfNonZeroValues + j -1])<<16 + Atan(symbol[fp->ofmd_symbol_size - NrOfNonZeroValues + j]);
data_block[j+NrOfNonZeroValues] = Atan(subframe[i][j+1])<<16 + Atan(subframe[i][j+2]);
// Set data blocks and update subframe no./other information to generated packet
// Write the packet(s) to the fronthaul
}
}
void recv_IF4( ) {
void recv_IF4( /* ADD INFO and data_block pointer */ ) {
// Read packet(s) from the fronthaul
// Apply reverse processing - decompression
// Generate and return the OFDM symbols (txdataF)
}
IF4_dl_packet gen_IF4_dl_packet( ) {
IF4_dl_packet gen_IF4_dl_packet( /* ADD INFO and data_block pointer */ ) {
IF4_dl_packet dl_packet;
// Set destination and source address
// Set Type and Sub-Type
dl_packet.type = ; //08_0A ?
dl_packet.sub_type = 0x0020;
// Leave reserved as it is
//dl_packet.rsvd = ;
// Set frame status
dl_packet.frame_status.ant_num = ;
dl_packet.frame_status.ant_start = ;
dl_packet.frame_status.rf_num = ;
dl_packet.frame_status.sf_num = ;
dl_packet.frame_status.sym_num = ;
//dl_packet.frame_status.rsvd = ;
// Set data blocks if sent
if (data_block != NULL) {
} else {
}
// Set frame check sequence
dl_packet.fcs = ;
return dl_packet;
}
IF4_ul_packet gen_IF4_ul_packet( ) {
IF4_ul_packet gen_IF4_ul_packet( /* ADD INFO and data_block pointer */ ) {
IF4_ul_packet ul_packet;
// Set destination and source address
// Set Type and Sub-Type
ul_packet.type = ; //08_0A ?
ul_packet.sub_type = 0x0019;
// Leave reserved as it is
//ul_packet.rsvd = ;
// Set frame status
ul_packet.frame_status.ant_num = ;
ul_packet.frame_status.ant_start = ;
ul_packet.frame_status.rf_num = ;
ul_packet.frame_status.sf_num = ;
ul_packet.frame_status.sym_num = ;
//ul_packet.frame_status.rsvd = ;
// Set antenna specific gain
ul_packet.gain0.exponent = ;
//ul_packet.gain0.rsvd = ;
// Set data blocks if sent
if (data_block != NULL) {
} else {
}
// Set frame check sequence
ul_packet.fcs = ;
return ul_packet;
}
IF4_prach_packet gen_IF4_prach_packet( ) {
IF4_prach_packet gen_IF4_prach_packet( /* ADD INFO and data_block pointer */ ) {
IF4_prach_packet prach_packet;
// Set destination and source address
// Set Type and Sub-Type
prach_packet.type = ; //08_0A ?
prach_packet.sub_type = 0x0021;
// Leave reserved as it is
//prach_packet.rsvd = ;
// Set LTE Prach configuration
//prach_packet.prach_conf.rsvd = ;
prach_packet.prach_conf.ant = ;
prach_packet.prach_conf.rf_num = ;
prach_packet.prach_conf.sf_num = ;
prach_packet.prach_conf.exponent = ;
// Set data blocks if sent
if (data_block != NULL) {
} else {
}
// Set frame check sequence
prach_packet.fcs = ;
return prach_packet;
}
......@@ -56,7 +56,7 @@ struct IF4_frame_status {
uint32_t rsvd:2;
};
/// IF4 Antenna Gain
/// IF4 Antenna Gain (16 bits)
struct IF4_gain {
/// Reserved
uint32_t rsvd:10;
......@@ -151,6 +151,8 @@ struct IF4_prach_packet {
uint32_t fcs;
};
// Needs to be checked
IF4_dl_packet gen_IF4_dl_packet();
IF4_ul_packet gen_IF4_ul_packet();
......
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