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openairinterface5g/openair2/LAYER2/MAC/rar_tools.c
T
Lionel Gauthier c60dc45b2b Changed uX, uX_t sX, sX_t to uinX_t 
Cleaned some PDCP/driver code

types parameters and vars

Please see openair2/COMMON/platform_types.h for simple coding rules.

please declare prototypes of functions in .h and include .h files in where the function is used and where it is implemented.



git-svn-id: http://svn.eurecom.fr/openair4G/trunk@5096 818b1a75-f10b-46b9-bf7c-635c3b92a50f
2014-02-28 13:03:10 +00:00

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/*******************************************************************************
Eurecom OpenAirInterface
Copyright(c) 1999 - 2010 Eurecom
This program is free software; you can redistribute it and/or modify it
under the terms and conditions of the GNU General Public License,
version 2, as published by the Free Software Foundation.
This program is distributed in the hope it will be useful, but WITHOUT
ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
more details.
You should have received a copy of the GNU General Public License along with
this program; if not, write to the Free Software Foundation, Inc.,
51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
The full GNU General Public License is included in this distribution in
the file called "COPYING".
Contact Information
Openair Admin: openair_admin@eurecom.fr
Openair Tech : openair_tech@eurecom.fr
Forums : http://forums.eurecom.fsr/openairinterface
Address : Eurecom, 2229, route des crêtes, 06560 Valbonne Sophia Antipolis, France
*******************************************************************************/
/*! \file rar_tools.c
* \brief random access tools
* \author Raymond Knopp
* \date 2011
* \version 0.5
* @ingroup _mac
*/
#include "defs.h"
#include "extern.h"
#include "MAC_INTERFACE/defs.h"
#include "MAC_INTERFACE/extern.h"
#include "SIMULATION/TOOLS/defs.h"
#include "UTIL/LOG/log.h"
#include "OCG.h"
#include "OCG_extern.h"
#include "UTIL/OPT/opt.h"
#define DEBUG_RAR
extern unsigned int localRIV2alloc_LUT25[512];
extern unsigned int distRIV2alloc_LUT25[512];
extern unsigned short RIV2nb_rb_LUT25[512];
extern unsigned short RIV2first_rb_LUT25[512];
extern inline unsigned int taus(void);
unsigned short fill_rar(module_id_t module_idP,
frame_t frameP,
uint8_t *dlsch_buffer,
uint16_t N_RB_UL,
uint8_t input_buffer_length) {
RA_HEADER_RAPID *rarh = (RA_HEADER_RAPID *)dlsch_buffer;
// RAR_PDU *rar = (RAR_PDU *)(dlsch_buffer+1);
uint8_t *rar = (uint8_t *)(dlsch_buffer+1);
int i,ra_idx = -1;
uint16_t rballoc;
uint8_t mcs,TPC,ULdelay,cqireq;
for (i=0;i<NB_RA_PROC_MAX;i++) {
if (eNB_mac_inst[module_idP].RA_template[i].generate_rar == 1) {
ra_idx=i;
eNB_mac_inst[module_idP].RA_template[i].generate_rar = 0;
break;
}
}
// subheader fixed
rarh->E = 0; // First and last RAR
rarh->T = 1; // 0 for E/T/R/R/BI subheader, 1 for E/T/RAPID subheader
rarh->RAPID = eNB_mac_inst[module_idP].RA_template[ra_idx].preamble_index; // Respond to Preamble 0 only for the moment
/*
rar->R = 0;
rar->Timing_Advance_Command = eNB_mac_inst[module_idP].RA_template[ra_idx].timing_offset/4;
rar->hopping_flag = 0;
rar->rb_alloc = mac_xface->computeRIV(N_RB_UL,12,2); // 2 RB
rar->mcs = 2; // mcs 2
rar->TPC = 4; // 2 dB power adjustment
rar->UL_delay = 0;
rar->cqi_req = 1;
rar->t_crnti = eNB_mac_inst[module_idP].RA_template[ra_idx].rnti;
*/
rar[4] = (uint8_t)(eNB_mac_inst[module_idP].RA_template[ra_idx].rnti>>8);
rar[5] = (uint8_t)(eNB_mac_inst[module_idP].RA_template[ra_idx].rnti&0xff);
eNB_mac_inst[module_idP].RA_template[ra_idx].timing_offset = 0;
//eNB_mac_inst[module_idP].RA_template[ra_idx].timing_offset /= 16;
rar[0] = (uint8_t)(eNB_mac_inst[module_idP].RA_template[ra_idx].timing_offset>>(2+4)); // 7 MSBs of timing advance + divide by 4
rar[1] = (uint8_t)(eNB_mac_inst[module_idP].RA_template[ra_idx].timing_offset<<(4-2))&0xf0; // 4 LSBs of timing advance + divide by 4
rballoc = mac_xface->computeRIV(N_RB_UL,1,1); // first PRB only for UL Grant
rar[1] |= (rballoc>>7)&7; // Hopping = 0 (bit 3), 3 MSBs of rballoc
rar[2] = ((uint8_t)(rballoc&0xff))<<1; // 7 LSBs of rballoc
mcs = 10;
TPC = 3;
ULdelay = 0;
cqireq = 0;
rar[2] |= ((mcs&0x8)>>3); // mcs 10
rar[3] = (((mcs&0x7)<<5)) | ((TPC&7)<<2) | ((ULdelay&1)<<1) | (cqireq&1);
LOG_I(MAC,"[eNB %d][RAPROC] Frame %d Generating RAR (%02x|%02x.%02x.%02x.%02x.%02x.%02x) for ra_idx %d, CRNTI %x,preamble %d/%d,TIMING OFFSET %d\n",module_idP,frameP,
*(uint8_t*)rarh,rar[0],rar[1],rar[2],rar[3],rar[4],rar[5],
ra_idx,
eNB_mac_inst[module_idP].RA_template[ra_idx].rnti,
rarh->RAPID,eNB_mac_inst[module_idP].RA_template[0].preamble_index,
eNB_mac_inst[module_idP].RA_template[ra_idx].timing_offset);
#if defined(USER_MODE) && defined(OAI_EMU)
if (oai_emulation.info.opt_enabled){
trace_pdu(1, dlsch_buffer, input_buffer_length, module_idP, 2, 1,
eNB_mac_inst[module_idP].subframe, 0, 0);
LOG_I(OPT,"[eNB %d][RAPROC] RAR Frame %d trace pdu for rnti %x and rapid %d size %d\n",
module_idP, frameP, eNB_mac_inst[module_idP].RA_template[ra_idx].rnti,
rarh->RAPID, input_buffer_length);
}
#endif
return(eNB_mac_inst[module_idP].RA_template[ra_idx].rnti);
}
uint16_t ue_process_rar(module_id_t module_idP, frame_t frameP, uint8_t *dlsch_buffer,rnti_t *t_crnti,uint8_t preamble_index) {
RA_HEADER_RAPID *rarh = (RA_HEADER_RAPID *)dlsch_buffer;
// RAR_PDU *rar = (RAR_PDU *)(dlsch_buffer+1);
uint8_t *rar = (uint8_t *)(dlsch_buffer+1);
LOG_I(MAC,"[eNB %d][RAPROC] Frame %d Received RAR (%02x|%02x.%02x.%02x.%02x.%02x.%02x) for preamble %d/%d\n",module_idP,frameP,
*(uint8_t*)rarh,rar[0],rar[1],rar[2],rar[3],rar[4],rar[5],
rarh->RAPID,preamble_index);
#ifdef DEBUG_RAR
LOG_D(MAC,"[UE %d][RAPROC] rarh->E %d\n",module_idP,rarh->E);
LOG_D(MAC,"[UE %d][RAPROC] rarh->T %d\n",module_idP,rarh->T);
LOG_D(MAC,"[UE %d][RAPROC] rarh->RAPID %d\n",module_idP,rarh->RAPID);
// LOG_I(MAC,"[UE %d][RAPROC] rar->R %d\n",module_idP,rar->R);
LOG_I(MAC,"[UE %d][RAPROC] rar->Timing_Advance_Command %d\n",module_idP,(((uint16_t)(rar[0]&0x7f))<<4) + (rar[1]>>4));
// LOG_I(MAC,"[UE %d][RAPROC] rar->hopping_flag %d\n",module_idP,rar->hopping_flag);
// LOG_I(MAC,"[UE %d][RAPROC] rar->rb_alloc %d\n",module_idP,rar->rb_alloc);
// LOG_I(MAC,"[UE %d][RAPROC] rar->mcs %d\n",module_idP,rar->mcs);
// LOG_I(MAC,"[UE %d][RAPROC] rar->TPC %d\n",module_idP,rar->TPC);
// LOG_I(MAC,"[UE %d][RAPROC] rar->UL_delay %d\n",module_idP,rar->UL_delay);
// LOG_I(MAC,"[UE %d][RAPROC] rar->cqi_req %d\n",module_idP,rar->cqi_req);
LOG_I(MAC,"[UE %d][RAPROC] rar->t_crnti %x\n",module_idP,(uint16_t)rar[5]+(rar[4]<<8));
#endif
if (preamble_index == rarh->RAPID) {
*t_crnti = (uint16_t)rar[5]+(rar[4]<<8);//rar->t_crnti;
UE_mac_inst[module_idP].crnti = *t_crnti;//rar->t_crnti;
//return(rar->Timing_Advance_Command);
return((((uint16_t)(rar[0]&0x7f))<<4) + (rar[1]>>4));
}
else {
UE_mac_inst[module_idP].crnti=0;
return(0xffff);
}
}
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