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osmo-msc
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osmo-msc/src/bsc_hack.c

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/* A hackish minimal BSC (+MSC +HLR) implementation */
/* (C) 2008 by Harald Welte <laforge@gnumonks.org>
* All Rights Reserved
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that 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 Street, Fifth Floor, Boston, MA 02110-1301 USA.
*
*/
#include <unistd.h>
#include <stdlib.h>
#include <stdio.h>
#include <stdarg.h>
#include <time.h>
#include <string.h>
#include <errno.h>
#include <openbsc/gsm_data.h>
#include <openbsc/select.h>
#include <openbsc/abis_rsl.h>
#include <openbsc/abis_nm.h>
#include <openbsc/debug.h>
#include <openbsc/misdn.h>
/* global pointer to the gsm network data structure */
static struct gsm_network *gsmnet;
/* The following definitions are for OM and NM packets that we cannot yet
* generate by code but we just pass on */
// BTS Site Manager, SET ATTRIBUTES
/*
Object Class: BTS Site Manager
Instance 1: FF
Instance 2: FF
Instance 3: FF
SET ATTRIBUTES
sAbisExternalTime: 2007/09/08 14:36:11
omLAPDRelTimer: 30sec
shortLAPDIntTimer: 5sec
emergencyTimer1: 10 minutes
emergencyTimer2: 0 minutes
*/
unsigned char msg_1[] =
{
0xD0, 0x00, 0xFF, 0xFF, 0xFF, 0x91, 0x07, 0xD7, 0x09, 0x08, 0x0E, 0x24,
0x0B, 0xCE, 0x02, 0x00, 0x1E, 0xE8, 0x01, 0x05, 0x42, 0x02, 0x00, 0x0A, 0x44,
0x02, 0x00, 0x00
};
// BTS, SET BTS ATTRIBUTES
/*
Object Class: BTS
BTS relat. Number: 0
Instance 2: FF
Instance 3: FF
SET BTS ATTRIBUTES
bsIdentityCode / BSIC:
PLMN_colour_code: 7h
BS_colour_code: 7h
BTS Air Timer T3105: 4 ,unit 10 ms
btsIsHopping: FALSE
periodCCCHLoadIndication: 255sec
thresholdCCCHLoadIndication: 100%
cellAllocationNumber: 00h = GSM 900
enableInterferenceClass: 00h = Disabled
fACCHQual: 6 (FACCH stealing flags minus 1)
intaveParameter: 31 SACCH multiframes
interferenceLevelBoundaries:
Interference Boundary 1: 0Ah
Interference Boundary 2: 0Fh
Interference Boundary 3: 14h
Interference Boundary 4: 19h
Interference Boundary 5: 1Eh
mSTxPwrMax: 11
GSM range: 2=39dBm, 15=13dBm, stepsize 2 dBm
DCS1800 range: 0=30dBm, 15=0dBm, stepsize 2 dBm
PCS1900 range: 0=30dBm, 15=0dBm, stepsize 2 dBm
30=33dBm, 31=32dBm
ny1:
Maximum number of repetitions for PHYSICAL INFORMATION message (GSM 04.08): 20
powerOutputThresholds:
Out Power Fault Threshold: -10 dB
Red Out Power Threshold: - 6 dB
Excessive Out Power Threshold: 5 dB
rACHBusyThreshold: -127 dBm
rACHLoadAveragingSlots: 250 ,number of RACH burst periods
rfResourceIndicationPeriod: 125 SACCH multiframes
T200:
SDCCH: 044 in 5 ms
FACCH/Full rate: 031 in 5 ms
FACCH/Half rate: 041 in 5 ms
SACCH with TCH SAPI0: 090 in 10 ms
SACCH with SDCCH: 090 in 10 ms
SDCCH with SAPI3: 090 in 5 ms
SACCH with TCH SAPI3: 135 in 10 ms
tSync: 9000 units of 10 msec
tTrau: 9000 units of 10 msec
enableUmLoopTest: 00h = disabled
enableExcessiveDistance: 00h = Disabled
excessiveDistance: 64km
hoppingMode: 00h = baseband hopping
cellType: 00h = Standard Cell
BCCH ARFCN / bCCHFrequency: 1
*/
unsigned char msg_2[] =
{
0x41, 0x01, 0x00, 0xFF, 0xFF, 0x09, 0x3F, 0x0A, 0x04, 0x61, 0x00, 0x0B,
0xFF, 0x0C, 0x64, 0x62, 0x00, 0x66, 0x00, 0x6E, 0x06, 0x18, 0x1F, 0x19,
0x0A, 0x0F, 0x14, 0x19, 0x1E, 0x7B, 0x0B, 0x23, 0x14, 0x28, 0x00, 0x04,
0x03, 0x2A, 0x7F, 0x2B, 0x00, 0xFA, 0x8F, 0x7D, 0x33, 0x2C, 0x1F, 0x29,
0x5A, 0x5A, 0x5A, 0x87, 0x94, 0x23, 0x28, 0x95, 0x23, 0x28, 0x35, 0x01,
0x00, 0x46, 0x01, 0x00, 0x58, 0x01, 0x40, 0xC5, 0x01, 0x00, 0xF2, 0x01,
0x00, 0x08, 0x00, HARDCODED_ARFCN/*0x01*/,
};
// Handover Recognition, SET ATTRIBUTES
/*
Illegal Contents GSM Formatted O&M Msg
Object Class: Handover Recognition
BTS relat. Number: 0
Instance 2: FF
Instance 3: FF
SET ATTRIBUTES
enableDelayPowerBudgetHO: 00h = Disabled
enableDistanceHO: 00h = Disabled
enableInternalInterCellHandover: 00h = Disabled
enableInternalIntraCellHandover: 00h = Disabled
enablePowerBudgetHO: 00h = Disabled
enableRXLEVHO: 00h = Disabled
enableRXQUALHO: 00h = Disabled
hoAveragingDistance: 8 SACCH multiframes
hoAveragingLev:
A_LEV_HO: 8 SACCH multiframes
W_LEV_HO: 1 SACCH multiframes
hoAveragingPowerBudget: 16 SACCH multiframes
hoAveragingQual:
A_QUAL_HO: 8 SACCH multiframes
W_QUAL_HO: 2 SACCH multiframes
hoLowerThresholdLevDL: (10 - 110) dBm
hoLowerThresholdLevUL: (5 - 110) dBm
hoLowerThresholdQualDL: 06h = 6.4% < BER < 12.8%
hoLowerThresholdQualUL: 06h = 6.4% < BER < 12.8%
hoThresholdLevDLintra : (20 - 110) dBm
hoThresholdLevULintra: (20 - 110) dBm
hoThresholdMsRangeMax: 20 km
nCell: 06h
timerHORequest: 3 ,unit 2 SACCH multiframes
*/
unsigned char msg_3[] =
{
0xD0, 0xA1, 0x00, 0xFF, 0xFF, 0xD0, 0x00, 0x64, 0x00, 0x67, 0x00, 0x68,
0x00, 0x6A, 0x00, 0x6C, 0x00, 0x6D, 0x00, 0x6F, 0x08, 0x70, 0x08, 0x01,
0x71, 0x10, 0x10, 0x10, 0x72, 0x08, 0x02, 0x73, 0x0A, 0x74, 0x05, 0x75,
0x06, 0x76, 0x06, 0x78, 0x14, 0x79, 0x14, 0x7A, 0x14, 0x7D, 0x06, 0x92,
0x03, 0x20, 0x01, 0x00, 0x45, 0x01, 0x00, 0x48, 0x01, 0x00, 0x5A, 0x01,
0x00, 0x5B, 0x01, 0x05, 0x5E, 0x01, 0x1A, 0x5F, 0x01, 0x20, 0x9D, 0x01,
0x00, 0x47, 0x01, 0x00, 0x5C, 0x01, 0x64, 0x5D, 0x01, 0x1E, 0x97, 0x01,
0x20, 0xF7, 0x01, 0x3C,
};
// Power Control, SET ATTRIBUTES
/*
Object Class: Power Control
BTS relat. Number: 0
Instance 2: FF
Instance 3: FF
SET ATTRIBUTES
enableMsPowerControl: 00h = Disabled
enablePowerControlRLFW: 00h = Disabled
pcAveragingLev:
A_LEV_PC: 4 SACCH multiframes
W_LEV_PC: 1 SACCH multiframes
pcAveragingQual:
A_QUAL_PC: 4 SACCH multiframes
W_QUAL_PC: 2 SACCH multiframes
pcLowerThresholdLevDL: 0Fh
pcLowerThresholdLevUL: 0Ah
pcLowerThresholdQualDL: 05h = 3.2% < BER < 6.4%
pcLowerThresholdQualUL: 05h = 3.2% < BER < 6.4%
pcRLFThreshold: 0Ch
pcUpperThresholdLevDL: 14h
pcUpperThresholdLevUL: 0Fh
pcUpperThresholdQualDL: 04h = 1.6% < BER < 3.2%
pcUpperThresholdQualUL: 04h = 1.6% < BER < 3.2%
powerConfirm: 2 ,unit 2 SACCH multiframes
powerControlInterval: 2 ,unit 2 SACCH multiframes
powerIncrStepSize: 02h = 4 dB
powerRedStepSize: 01h = 2 dB
radioLinkTimeoutBs: 64 SACCH multiframes
enableBSPowerControl: 00h = disabled
*/
unsigned char msg_4[] =
{
0xD0, 0xA2, 0x00, 0xFF, 0xFF, 0x69, 0x00, 0x6B, 0x00, 0x7E, 0x04, 0x01,
0x7F, 0x04, 0x02, 0x80, 0x0F, 0x81, 0x0A, 0x82, 0x05, 0x83, 0x05, 0x84,
0x0C, 0x85, 0x14, 0x86, 0x0F, 0x87, 0x04, 0x88, 0x04, 0x89, 0x02, 0x8A,
0x02, 0x8B, 0x02, 0x8C, 0x01, 0x8D, 0x40, 0x65, 0x01, 0x00 // set to 0x01 to enable BSPowerControl
};
// Transceiver, SET TRX ATTRIBUTES (TRX 0)
/*
Object Class: Transceiver
BTS relat. Number: 0
Tranceiver number: 0
Instance 3: FF
SET TRX ATTRIBUTES
aRFCNList (HEX): 0001
txPwrMaxReduction: 00h = 0dB
radioMeasGran: 254 SACCH multiframes
radioMeasRep: 01h = enabled
memberOfEmergencyConfig: 01h = TRUE
trxArea: 00h = TRX doesn't belong to a concentric cell
*/
unsigned char msg_6[] =
{
0x44, 0x02, 0x00, 0x00, 0xFF, 0x05, 0x01, 0x00, HARDCODED_ARFCN /*0x01*/, 0x2D,
0x00, 0xDC, 0x01, 0xFE, 0xDD, 0x01, 0x01, 0x9B, 0x01, 0x01, 0x9F, 0x01, 0x00,
};
static void bootstrap_om(struct gsm_bts *bts)
{
struct gsm_bts_trx *trx = &bts->trx[0];
fprintf(stdout, "bootstrapping OML\n");
/* stop sending event reports */
abis_nm_event_reports(bts, 0);
/* begin DB transmission */
abis_nm_db_transmission(bts, 1);
/* end DB transmission */
abis_nm_db_transmission(bts, 0);
/* Reset BTS Site manager resource */
abis_nm_reset_resource(bts);
/* begin DB transmission */
abis_nm_db_transmission(bts, 1);
abis_nm_raw_msg(bts, sizeof(msg_1), msg_1); /* set BTS SiteMgr attr*/
abis_nm_raw_msg(bts, sizeof(msg_2), msg_2); /* set BTS attr */
abis_nm_raw_msg(bts, sizeof(msg_3), msg_3); /* set BTS handover attr */
abis_nm_raw_msg(bts, sizeof(msg_4), msg_4); /* set BTS power control attr */
/* Connect signalling of bts0/trx0 to e1_0/ts1/64kbps */
abis_nm_conn_terr_sign(trx, 0, 1, 0xff);
abis_nm_raw_msg(bts, sizeof(msg_6), msg_6); /* SET TRX ATTRIBUTES */
/* Use TEI 1 for signalling */
abis_nm_establish_tei(bts, 0, 0, 1, 0xff, 0x01);
abis_nm_set_channel_attr(&trx->ts[0], NM_CHANC_SDCCH_CBCH);
#if 0
/* TRX 1 */
abis_nm_conn_terr_sign(&bts->trx[1], 0, 1, 0xff);
/* FIXME: TRX ATTRIBUTE */
abis_nm_establish_tei(bts, 0, 0, 1, 0xff, 0x02);
#endif
/* SET CHANNEL ATTRIBUTE TS1 */
abis_nm_set_channel_attr(&trx->ts[1], 0x09);
/* Connect traffic of bts0/trx0/ts1 to e1_0/ts2/b */
abis_nm_conn_terr_traf(&trx->ts[1], 0, 2, 1);
/* SET CHANNEL ATTRIBUTE TS2 */
abis_nm_set_channel_attr(&trx->ts[2], 0x09);
/* Connect traffic of bts0/trx0/ts2 to e1_0/ts2/c */
abis_nm_conn_terr_traf(&trx->ts[2], 0, 2, 2);
/* SET CHANNEL ATTRIBUTE TS3 */
abis_nm_set_channel_attr(&trx->ts[3], 0x09);
/* Connect traffic of bts0/trx0/ts3 to e1_0/ts2/d */
abis_nm_conn_terr_traf(&trx->ts[3], 0, 2, 3);
/* SET CHANNEL ATTRIBUTE TS4 */
abis_nm_set_channel_attr(&trx->ts[4], 0x09);
/* Connect traffic of bts0/trx0/ts4 to e1_0/ts3/a */
abis_nm_conn_terr_traf(&trx->ts[4], 0, 3, 0);
/* SET CHANNEL ATTRIBUTE TS5 */
abis_nm_set_channel_attr(&trx->ts[5], 0x09);
/* Connect traffic of bts0/trx0/ts5 to e1_0/ts3/b */
abis_nm_conn_terr_traf(&trx->ts[5], 0, 3, 1);
/* SET CHANNEL ATTRIBUTE TS6 */
abis_nm_set_channel_attr(&trx->ts[6], 0x09);
/* Connect traffic of bts0/trx0/ts6 to e1_0/ts3/c */
abis_nm_conn_terr_traf(&trx->ts[6], 0, 3, 2);
/* SET CHANNEL ATTRIBUTE TS7 */
abis_nm_set_channel_attr(&trx->ts[7], 0x09);
/* Connect traffic of bts0/trx0/ts7 to e1_0/ts3/d */
abis_nm_conn_terr_traf(&trx->ts[7], 0, 3, 3);
/* end DB transmission */
abis_nm_db_transmission(bts, 0);
/* Reset BTS Site manager resource */
abis_nm_reset_resource(bts);
/* restart sending event reports */
abis_nm_event_reports(bts, 1);
}
struct bcch_info {
u_int8_t type;
u_int8_t len;
const u_int8_t *data;
};
/*
SYSTEM INFORMATION TYPE 1
Cell channel description
Format-ID bit map 0
CA-ARFCN Bit 124...001 (Hex): 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 01
RACH Control Parameters
maximum 7 retransmissions
8 slots used to spread transmission
cell not barred for access
call reestablishment not allowed
Access Control Class = 0000
*/
static const u_int8_t si1[] = {
0x55, 0x06, 0x19, 0x04 /*0x00*/, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 /*0x01*/,0xD5,
0x00, 0x00, 0x2B
};
/*
SYSTEM INFORMATION TYPE 2
Neighbour Cells Description
EXT-IND: Carries the complete BA
BA-IND = 0
Format-ID bit map 0
CA-ARFCN Bit 124...001 (Hex): 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
NCC permitted (NCC) = FF
RACH Control Parameters
maximum 7 retransmissions
8 slots used to spread transmission
cell not barred for access
call reestablishment not allowed
Access Control Class = 0000
*/
static const u_int8_t si2[] = {
0x59, 0x06, 0x1A, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xFF, 0xD5, 0x00,
0x00
};
/*
SYSTEM INFORMATION TYPE 3
Cell identity = 00001 (1h)
Location area identification
Mobile Country Code (MCC): 001
Mobile Network Code (MNC): 01
Location Area Code (LAC): 00001 (1h)
Control Channel Description
Attach-detach: MSs in the cell are not allowed to apply IMSI attach /detach
0 blocks reserved for access grant
1 channel used for CCCH, with SDCCH
5 multiframes period for PAGING REQUEST
Time-out T3212 = 0
Cell Options BCCH
Power control indicator: not set
MSs shall not use uplink DTX
Radio link timeout = 36
Cell Selection Parameters
Cell reselect hysteresis = 6 dB RXLEV hysteresis for LA re-selection
max.TX power level MS may use for CCH = 2
Additional Reselect Parameter Indication (ACS) = only SYSTEM INFO 4: The SI rest octets, if present, shall be used to derive the value of PI and possibly C2 parameters
Half rate support (NECI): New establishment causes are not supported
min.RX signal level for MS = 0
RACH Control Parameters
maximum 7 retransmissions
8 slots used to spread transmission
cell not barred for access
call reestablishment not allowed
Access Control Class = 0000
SI 3 Rest Octets
Cell Bar Qualify (CBQ): 0
Cell Reselect Offset = 0 dB
Temporary Offset = 0 dB
Penalty Time = 20 s
System Information 2ter Indicator (2TI): 0 = not available
Early Classmark Sending Control (ECSC): 0 = forbidden
Scheduling Information is not sent in SYSTEM INFORMATION TYPE 9 on the BCCH
*/
unsigned char si3[] = {
0x49, 0x06, 0x1B, 0x00, 0x01, 0x00, 0xF1, 0x10, 0x00, 0x01,
0x01, 0x03, 0x00, 0x28, 0x62, 0x00, 0xD5, 0x00, 0x00, 0x80,
0x00, 0x00, 0x2B
};
/*
SYSTEM INFORMATION TYPE 4
Location area identification
Mobile Country Code (MCC): 001
Mobile Network Code (MNC): 01
Location Area Code (LAC): 00001 (1h)
Cell Selection Parameters
Cell reselect hysteresis = 6 dB RXLEV hysteresis for LA re-selection
max.TX power level MS may use for CCH = 2
Additional Reselect Parameter Indication (ACS) = only SYSTEM INFO 4: The SI rest octets, if present, shall be used to derive the value of PI and possibly C2 parameters
Half rate support (NECI): New establishment causes are not supported
min.RX signal level for MS = 0
RACH Control Parameters
maximum 7 retransmissions
8 slots used to spread transmission
cell not barred for access
call reestablishment not allowed
Access Control Class = 0000
Channel Description
Type = SDCCH/4[2]
Timeslot Number: 0
Training Sequence Code: 7h
ARFCN: 1
SI Rest Octets
Cell Bar Qualify (CBQ): 0
Cell Reselect Offset = 0 dB
Temporary Offset = 0 dB
Penalty Time = 20 s
*/
static const u_int8_t si4[] = {
0x41, 0x06, 0x1C, 0x00, 0xF1, 0x10, 0x00, 0x01, 0x62, 0x00,
0xD5, 0x00, 0x00, 0x64, 0x30, 0xE0, HARDCODED_ARFCN/*0x01*/, 0x80, 0x00, 0x00,
0x2B, 0x2B, 0x2B
};
/*
SYSTEM INFORMATION TYPE 5
Neighbour Cells Description
EXT-IND: Carries the complete BA
BA-IND = 0
Format-ID bit map 0
CA-ARFCN Bit 124...001 (Hex): 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
*/
static const u_int8_t si5[] = {
0x06, 0x1D, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
};
// SYSTEM INFORMATION TYPE 6
/*
SACCH FILLING
System Info Type: SYSTEM INFORMATION 6
L3 Information (Hex): 06 1E 00 01 xx xx 10 00 01 28 FF
SYSTEM INFORMATION TYPE 6
Cell identity = 00001 (1h)
Location area identification
Mobile Country Code (MCC): 001
Mobile Network Code (MNC): 01
Location Area Code (LAC): 00001 (1h)
Cell Options SACCH
Power control indicator: not set
MSs shall not use uplink DTX on a TCH-F. MS shall not use uplink DTX on TCH-H.
Radio link timeout = 36
NCC permitted (NCC) = FF
*/
static const u_int8_t si6[] = {
0x06, 0x1E, 0x00, 0x01, 0x00, 0xF1, 0x10, 0x00, 0x01, 0x28, 0xFF,
};
static const struct bcch_info bcch_infos[] = {
{
.type = RSL_SYSTEM_INFO_1,
.len = sizeof(si1),
.data = si1,
}, {
.type = RSL_SYSTEM_INFO_2,
.len = sizeof(si2),
.data = si2,
}, {
.type = RSL_SYSTEM_INFO_3,
.len = sizeof(si3),
.data = si3,
}, {
.type = RSL_SYSTEM_INFO_4,
.len = sizeof(si4),
.data = si4,
},
};
/* set all system information types */
static int set_system_infos(struct gsm_bts *bts)
{
int i;
for (i = 0; i < ARRAY_SIZE(bcch_infos); i++) {
rsl_bcch_info(bts, bcch_infos[i].type,
bcch_infos[i].data,
bcch_infos[i].len);
}
rsl_sacch_filling(bts, RSL_SYSTEM_INFO_5, si5, sizeof(si5));
rsl_sacch_filling(bts, RSL_SYSTEM_INFO_6, si6, sizeof(si6));
return 0;
}
static void activate_traffic_channels(struct gsm_bts_trx *trx)
{
int i;
/* channel 0 is CCCH */
for (i = 1; i < 8; i++)
rsl_chan_activate_tch_f(&trx->ts[i]);
}
static void bootstrap_rsl(struct gsm_bts *bts)
{
fprintf(stdout, "bootstrapping RSL\n");
set_system_infos(bts);
/* FIXME: defer this until the channels are used */
//activate_traffic_channels(&bts->trx[0]);
}
static void mi_cb(int event, struct gsm_bts *bts)
{
switch (event) {
case EVT_E1_OML_UP:
bootstrap_om(bts);
break;
case EVT_E1_RSL_UP:
bootstrap_rsl(bts);
break;
default:
/* FIXME: deal with TEI or L1 link loss */
break;
}
}
static int bootstrap_network(void)
{
struct gsm_bts *bts;
/* initialize our data structures */
gsmnet = gsm_network_init(1, 1, 1);
if (!gsmnet)
return -ENOMEM;
bts = &gsmnet->bts[0];
bts->location_area_code = 1;
bts->trx[0].arfcn = HARDCODED_ARFCN;
if (mi_setup(bts, 0, mi_cb) < 0)
return -EIO;
return 0;
}
static unsigned int debug_mask = 0xffffffff & ~DMI;
void debugp(unsigned int subsys, char *file, int line, const char *format, ...)
{
char *timestr;
va_list ap;
time_t tm;
FILE *outfd = stderr;
if (!(debug_mask & subsys))
return;
va_start(ap, format);
tm = time(NULL);
timestr = ctime(&tm);
timestr[strlen(timestr)-1] = '\0';
fprintf(outfd, "%s <%4.4x> %s:%d ", timestr, subsys, file, line);
vfprintf(outfd, format, ap);
va_end(ap);
fflush(outfd);
}
int main(int argc, char **argv)
{
bootstrap_network();
while (1) {
bsc_select_main();
}
}
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