dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 1 | /* |
| 2 | * Copyright 2008, 2009, 2010 Free Software Foundation, Inc. |
| 3 | * |
| 4 | * This software is distributed under the terms of the GNU Public License. |
| 5 | * See the COPYING file in the main directory for details. |
| 6 | * |
| 7 | * This use of this software may be subject to additional restrictions. |
| 8 | * See the LEGAL file in the main directory for details. |
| 9 | |
| 10 | This program is free software: you can redistribute it and/or modify |
| 11 | it under the terms of the GNU General Public License as published by |
| 12 | the Free Software Foundation, either version 3 of the License, or |
| 13 | (at your option) any later version. |
| 14 | |
| 15 | This program is distributed in the hope that it will be useful, |
| 16 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 17 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 18 | GNU General Public License for more details. |
| 19 | |
| 20 | You should have received a copy of the GNU General Public License |
| 21 | along with this program. If not, see <http://www.gnu.org/licenses/>. |
| 22 | */ |
| 23 | |
dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 24 | #include <stdio.h> |
Alexander Chemeris | e8905a0 | 2015-06-03 23:47:56 -0400 | [diff] [blame] | 25 | #include <iomanip> // std::setprecision |
Alexander Chemeris | e692ce9 | 2015-06-12 00:15:31 -0400 | [diff] [blame] | 26 | #include <fstream> |
dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 27 | #include "Transceiver.h" |
| 28 | #include <Logger.h> |
| 29 | |
ttsou | 2173abf | 2012-08-08 00:51:31 +0000 | [diff] [blame] | 30 | #ifdef HAVE_CONFIG_H |
| 31 | #include "config.h" |
| 32 | #endif |
dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 33 | |
Alexander Chemeris | d734e2d | 2013-06-16 14:30:58 +0400 | [diff] [blame] | 34 | using namespace GSM; |
| 35 | |
kurtis.heimerl | ec842de | 2012-11-23 08:37:32 +0000 | [diff] [blame] | 36 | #define USB_LATENCY_INTRVL 10,0 |
ttsou | 2173abf | 2012-08-08 00:51:31 +0000 | [diff] [blame] | 37 | |
| 38 | #if USE_UHD |
kurtis.heimerl | ec842de | 2012-11-23 08:37:32 +0000 | [diff] [blame] | 39 | # define USB_LATENCY_MIN 6,7 |
ttsou | 2173abf | 2012-08-08 00:51:31 +0000 | [diff] [blame] | 40 | #else |
kurtis.heimerl | ec842de | 2012-11-23 08:37:32 +0000 | [diff] [blame] | 41 | # define USB_LATENCY_MIN 1,1 |
ttsou | 2173abf | 2012-08-08 00:51:31 +0000 | [diff] [blame] | 42 | #endif |
dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 43 | |
Thomas Tsou | fa3a787 | 2013-10-17 21:23:34 -0400 | [diff] [blame] | 44 | /* Number of running values use in noise average */ |
| 45 | #define NOISE_CNT 20 |
ttsou | e8dde02 | 2012-12-06 15:43:55 +0000 | [diff] [blame] | 46 | |
Tom Tsou | a84e162 | 2016-06-29 14:50:25 -0700 | [diff] [blame] | 47 | /* |
| 48 | * Burst detection threshold |
| 49 | * |
| 50 | * Decision threshold value for burst gating on peak-to-average value of |
| 51 | * correlated synchronization sequences. Lower values pass more bursts up |
| 52 | * to upper layers but will increase the false detection rate. |
| 53 | */ |
| 54 | #define BURST_THRESH 4.0 |
| 55 | |
Thomas Tsou | f078273 | 2013-10-29 15:55:47 -0400 | [diff] [blame] | 56 | TransceiverState::TransceiverState() |
Tom Tsou | a4d1a41 | 2014-11-25 15:46:56 -0800 | [diff] [blame] | 57 | : mRetrans(false), mNoiseLev(0.0), mNoises(NOISE_CNT), mPower(0.0) |
Thomas Tsou | f078273 | 2013-10-29 15:55:47 -0400 | [diff] [blame] | 58 | { |
| 59 | for (int i = 0; i < 8; i++) { |
| 60 | chanType[i] = Transceiver::NONE; |
| 61 | fillerModulus[i] = 26; |
| 62 | chanResponse[i] = NULL; |
| 63 | DFEForward[i] = NULL; |
| 64 | DFEFeedback[i] = NULL; |
| 65 | |
| 66 | for (int n = 0; n < 102; n++) |
| 67 | fillerTable[n][i] = NULL; |
| 68 | } |
| 69 | } |
| 70 | |
| 71 | TransceiverState::~TransceiverState() |
| 72 | { |
| 73 | for (int i = 0; i < 8; i++) { |
| 74 | delete chanResponse[i]; |
| 75 | delete DFEForward[i]; |
| 76 | delete DFEFeedback[i]; |
| 77 | |
| 78 | for (int n = 0; n < 102; n++) |
| 79 | delete fillerTable[n][i]; |
| 80 | } |
| 81 | } |
| 82 | |
Alexander Chemeris | 37c52c7 | 2016-03-25 18:28:34 +0300 | [diff] [blame] | 83 | bool TransceiverState::init(int filler, size_t sps, float scale, size_t rtsc, unsigned rach_delay) |
Tom Tsou | 64ad712 | 2015-05-19 18:26:31 -0700 | [diff] [blame] | 84 | { |
Tom Tsou | 64ad712 | 2015-05-19 18:26:31 -0700 | [diff] [blame] | 85 | signalVector *burst; |
| 86 | |
| 87 | if ((sps != 1) && (sps != 4)) |
| 88 | return false; |
| 89 | |
| 90 | for (size_t n = 0; n < 8; n++) { |
Tom Tsou | 64ad712 | 2015-05-19 18:26:31 -0700 | [diff] [blame] | 91 | for (size_t i = 0; i < 102; i++) { |
| 92 | switch (filler) { |
| 93 | case Transceiver::FILLER_DUMMY: |
Tom Tsou | 8ee2f38 | 2016-03-06 20:57:34 -0800 | [diff] [blame] | 94 | burst = generateDummyBurst(sps, n); |
Tom Tsou | 64ad712 | 2015-05-19 18:26:31 -0700 | [diff] [blame] | 95 | break; |
Tom Tsou | af717b2 | 2016-03-06 22:19:15 -0800 | [diff] [blame] | 96 | case Transceiver::FILLER_NORM_RAND: |
Tom Tsou | 8ee2f38 | 2016-03-06 20:57:34 -0800 | [diff] [blame] | 97 | burst = genRandNormalBurst(rtsc, sps, n); |
Tom Tsou | 64ad712 | 2015-05-19 18:26:31 -0700 | [diff] [blame] | 98 | break; |
Tom Tsou | af717b2 | 2016-03-06 22:19:15 -0800 | [diff] [blame] | 99 | case Transceiver::FILLER_EDGE_RAND: |
| 100 | burst = generateEdgeBurst(rtsc); |
| 101 | break; |
Alexander Chemeris | 5efe050 | 2016-03-23 17:06:32 +0300 | [diff] [blame] | 102 | case Transceiver::FILLER_ACCESS_RAND: |
Alexander Chemeris | 37c52c7 | 2016-03-25 18:28:34 +0300 | [diff] [blame] | 103 | burst = genRandAccessBurst(rach_delay, sps, n); |
Alexander Chemeris | 5efe050 | 2016-03-23 17:06:32 +0300 | [diff] [blame] | 104 | break; |
Tom Tsou | 64ad712 | 2015-05-19 18:26:31 -0700 | [diff] [blame] | 105 | case Transceiver::FILLER_ZERO: |
| 106 | default: |
Tom Tsou | 8ee2f38 | 2016-03-06 20:57:34 -0800 | [diff] [blame] | 107 | burst = generateEmptyBurst(sps, n); |
Tom Tsou | 64ad712 | 2015-05-19 18:26:31 -0700 | [diff] [blame] | 108 | } |
| 109 | |
| 110 | scaleVector(*burst, scale); |
| 111 | fillerTable[i][n] = burst; |
| 112 | } |
| 113 | |
Tom Tsou | af717b2 | 2016-03-06 22:19:15 -0800 | [diff] [blame] | 114 | if ((filler == Transceiver::FILLER_NORM_RAND) || |
| 115 | (filler == Transceiver::FILLER_EDGE_RAND)) { |
| 116 | chanType[n] = Transceiver::TSC; |
| 117 | } |
Thomas Tsou | 15d743e | 2014-01-25 02:34:03 -0500 | [diff] [blame] | 118 | } |
Tom Tsou | 64ad712 | 2015-05-19 18:26:31 -0700 | [diff] [blame] | 119 | |
| 120 | return false; |
Thomas Tsou | f078273 | 2013-10-29 15:55:47 -0400 | [diff] [blame] | 121 | } |
| 122 | |
dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 123 | Transceiver::Transceiver(int wBasePort, |
Alexander Chemeris | e8905a0 | 2015-06-03 23:47:56 -0400 | [diff] [blame] | 124 | const char *wTRXAddress, |
Tom Tsou | 5cd70dc | 2016-03-06 01:28:40 -0800 | [diff] [blame] | 125 | size_t tx_sps, size_t rx_sps, size_t chans, |
Alexander Chemeris | e8905a0 | 2015-06-03 23:47:56 -0400 | [diff] [blame] | 126 | GSM::Time wTransmitLatency, |
| 127 | RadioInterface *wRadioInterface, |
| 128 | double wRssiOffset) |
Tom Tsou | eb54bdd | 2014-11-25 16:06:32 -0800 | [diff] [blame] | 129 | : mBasePort(wBasePort), mAddr(wTRXAddress), |
| 130 | mClockSocket(wBasePort, wTRXAddress, mBasePort + 100), |
| 131 | mTransmitLatency(wTransmitLatency), mRadioInterface(wRadioInterface), |
Alexander Chemeris | e8905a0 | 2015-06-03 23:47:56 -0400 | [diff] [blame] | 132 | rssiOffset(wRssiOffset), |
Tom Tsou | 5cd70dc | 2016-03-06 01:28:40 -0800 | [diff] [blame] | 133 | mSPSTx(tx_sps), mSPSRx(rx_sps), mChans(chans), mOn(false), |
Alexander Chemeris | 78d1fc9 | 2016-03-19 21:16:22 +0300 | [diff] [blame] | 134 | mTxFreq(0.0), mRxFreq(0.0), mTSC(0), mMaxExpectedDelayAB(0), mMaxExpectedDelayNB(0), |
| 135 | mWriteBurstToDiskMask(0) |
dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 136 | { |
dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 137 | txFullScale = mRadioInterface->fullScaleInputValue(); |
| 138 | rxFullScale = mRadioInterface->fullScaleOutputValue(); |
Alexander Chemeris | 5a06806 | 2015-06-20 01:38:47 +0300 | [diff] [blame] | 139 | |
| 140 | for (int i = 0; i < 8; i++) { |
| 141 | for (int j = 0; j < 8; j++) |
| 142 | mHandover[i][j] = false; |
| 143 | } |
dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 144 | } |
| 145 | |
| 146 | Transceiver::~Transceiver() |
| 147 | { |
Tom Tsou | eb54bdd | 2014-11-25 16:06:32 -0800 | [diff] [blame] | 148 | stop(); |
| 149 | |
dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 150 | sigProcLibDestroy(); |
Thomas Tsou | d647ec5 | 2013-10-29 15:17:34 -0400 | [diff] [blame] | 151 | |
Thomas Tsou | 204a9f1 | 2013-10-29 18:34:16 -0400 | [diff] [blame] | 152 | for (size_t i = 0; i < mChans; i++) { |
Tom Tsou | eb54bdd | 2014-11-25 16:06:32 -0800 | [diff] [blame] | 153 | mControlServiceLoopThreads[i]->cancel(); |
| 154 | mControlServiceLoopThreads[i]->join(); |
| 155 | delete mControlServiceLoopThreads[i]; |
| 156 | |
Thomas Tsou | 204a9f1 | 2013-10-29 18:34:16 -0400 | [diff] [blame] | 157 | mTxPriorityQueues[i].clear(); |
| 158 | delete mCtrlSockets[i]; |
| 159 | delete mDataSockets[i]; |
| 160 | } |
dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 161 | } |
Thomas Tsou | 83e0689 | 2013-08-20 16:10:01 -0400 | [diff] [blame] | 162 | |
Tom Tsou | eb54bdd | 2014-11-25 16:06:32 -0800 | [diff] [blame] | 163 | /* |
| 164 | * Initialize transceiver |
| 165 | * |
| 166 | * Start or restart the control loop. Any further control is handled through the |
| 167 | * socket API. Randomize the central radio clock set the downlink burst |
| 168 | * counters. Note that the clock will not update until the radio starts, but we |
| 169 | * are still expected to report clock indications through control channel |
| 170 | * activity. |
| 171 | */ |
Alexander Chemeris | 37c52c7 | 2016-03-25 18:28:34 +0300 | [diff] [blame] | 172 | bool Transceiver::init(int filler, size_t rtsc, unsigned rach_delay) |
Thomas Tsou | 83e0689 | 2013-08-20 16:10:01 -0400 | [diff] [blame] | 173 | { |
Thomas Tsou | e1ce925 | 2013-11-13 22:40:44 -0500 | [diff] [blame] | 174 | int d_srcport, d_dstport, c_srcport, c_dstport; |
Thomas Tsou | f078273 | 2013-10-29 15:55:47 -0400 | [diff] [blame] | 175 | |
Thomas Tsou | 204a9f1 | 2013-10-29 18:34:16 -0400 | [diff] [blame] | 176 | if (!mChans) { |
| 177 | LOG(ALERT) << "No channels assigned"; |
| 178 | return false; |
| 179 | } |
| 180 | |
Tom Tsou | 2079a3c | 2016-03-06 00:58:56 -0800 | [diff] [blame] | 181 | if (!sigProcLibSetup()) { |
Thomas Tsou | 83e0689 | 2013-08-20 16:10:01 -0400 | [diff] [blame] | 182 | LOG(ALERT) << "Failed to initialize signal processing library"; |
| 183 | return false; |
| 184 | } |
| 185 | |
Thomas Tsou | 204a9f1 | 2013-10-29 18:34:16 -0400 | [diff] [blame] | 186 | mDataSockets.resize(mChans); |
| 187 | mCtrlSockets.resize(mChans); |
Thomas Tsou | 204a9f1 | 2013-10-29 18:34:16 -0400 | [diff] [blame] | 188 | mControlServiceLoopThreads.resize(mChans); |
| 189 | mTxPriorityQueueServiceLoopThreads.resize(mChans); |
| 190 | mRxServiceLoopThreads.resize(mChans); |
| 191 | |
| 192 | mTxPriorityQueues.resize(mChans); |
| 193 | mReceiveFIFO.resize(mChans); |
| 194 | mStates.resize(mChans); |
| 195 | |
Thomas Tsou | ccb73e1 | 2014-04-15 17:41:28 -0400 | [diff] [blame] | 196 | /* Filler table retransmissions - support only on channel 0 */ |
Tom Tsou | 64ad712 | 2015-05-19 18:26:31 -0700 | [diff] [blame] | 197 | if (filler == FILLER_DUMMY) |
Thomas Tsou | ccb73e1 | 2014-04-15 17:41:28 -0400 | [diff] [blame] | 198 | mStates[0].mRetrans = true; |
| 199 | |
Tom Tsou | eb54bdd | 2014-11-25 16:06:32 -0800 | [diff] [blame] | 200 | /* Setup sockets */ |
Thomas Tsou | 204a9f1 | 2013-10-29 18:34:16 -0400 | [diff] [blame] | 201 | for (size_t i = 0; i < mChans; i++) { |
Thomas Tsou | e1ce925 | 2013-11-13 22:40:44 -0500 | [diff] [blame] | 202 | c_srcport = mBasePort + 2 * i + 1; |
| 203 | c_dstport = mBasePort + 2 * i + 101; |
| 204 | d_srcport = mBasePort + 2 * i + 2; |
| 205 | d_dstport = mBasePort + 2 * i + 102; |
| 206 | |
| 207 | mCtrlSockets[i] = new UDPSocket(c_srcport, mAddr.c_str(), c_dstport); |
| 208 | mDataSockets[i] = new UDPSocket(d_srcport, mAddr.c_str(), d_dstport); |
Thomas Tsou | 204a9f1 | 2013-10-29 18:34:16 -0400 | [diff] [blame] | 209 | } |
Thomas Tsou | 83e0689 | 2013-08-20 16:10:01 -0400 | [diff] [blame] | 210 | |
Tom Tsou | eb54bdd | 2014-11-25 16:06:32 -0800 | [diff] [blame] | 211 | /* Randomize the central clock */ |
| 212 | GSM::Time startTime(random() % gHyperframe, 0); |
| 213 | mRadioInterface->getClock()->set(startTime); |
| 214 | mTransmitDeadlineClock = startTime; |
| 215 | mLastClockUpdateTime = startTime; |
| 216 | mLatencyUpdateTime = startTime; |
| 217 | |
| 218 | /* Start control threads */ |
Thomas Tsou | 204a9f1 | 2013-10-29 18:34:16 -0400 | [diff] [blame] | 219 | for (size_t i = 0; i < mChans; i++) { |
Tom Tsou | eb54bdd | 2014-11-25 16:06:32 -0800 | [diff] [blame] | 220 | TransceiverChannel *chan = new TransceiverChannel(this, i); |
Thomas Tsou | 204a9f1 | 2013-10-29 18:34:16 -0400 | [diff] [blame] | 221 | mControlServiceLoopThreads[i] = new Thread(32768); |
Tom Tsou | eb54bdd | 2014-11-25 16:06:32 -0800 | [diff] [blame] | 222 | mControlServiceLoopThreads[i]->start((void * (*)(void*)) |
| 223 | ControlServiceLoopAdapter, (void*) chan); |
Thomas Tsou | 204a9f1 | 2013-10-29 18:34:16 -0400 | [diff] [blame] | 224 | |
Tom Tsou | 64ad712 | 2015-05-19 18:26:31 -0700 | [diff] [blame] | 225 | if (i && filler == FILLER_DUMMY) |
| 226 | filler = FILLER_ZERO; |
| 227 | |
Alexander Chemeris | 37c52c7 | 2016-03-25 18:28:34 +0300 | [diff] [blame] | 228 | mStates[i].init(filler, mSPSTx, txFullScale, rtsc, rach_delay); |
Thomas Tsou | 83e0689 | 2013-08-20 16:10:01 -0400 | [diff] [blame] | 229 | } |
| 230 | |
| 231 | return true; |
| 232 | } |
dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 233 | |
Tom Tsou | eb54bdd | 2014-11-25 16:06:32 -0800 | [diff] [blame] | 234 | /* |
| 235 | * Start the transceiver |
| 236 | * |
| 237 | * Submit command(s) to the radio device to commence streaming samples and |
| 238 | * launch threads to handle sample I/O. Re-synchronize the transmit burst |
| 239 | * counters to the central radio clock here as well. |
| 240 | */ |
| 241 | bool Transceiver::start() |
| 242 | { |
| 243 | ScopedLock lock(mLock); |
| 244 | |
| 245 | if (mOn) { |
| 246 | LOG(ERR) << "Transceiver already running"; |
Ivan Kluchnikov | 194a9b1 | 2015-04-23 17:08:27 +0300 | [diff] [blame] | 247 | return true; |
Tom Tsou | eb54bdd | 2014-11-25 16:06:32 -0800 | [diff] [blame] | 248 | } |
| 249 | |
| 250 | LOG(NOTICE) << "Starting the transceiver"; |
| 251 | |
| 252 | GSM::Time time = mRadioInterface->getClock()->get(); |
| 253 | mTransmitDeadlineClock = time; |
| 254 | mLastClockUpdateTime = time; |
| 255 | mLatencyUpdateTime = time; |
| 256 | |
| 257 | if (!mRadioInterface->start()) { |
| 258 | LOG(ALERT) << "Device failed to start"; |
| 259 | return false; |
| 260 | } |
| 261 | |
| 262 | /* Device is running - launch I/O threads */ |
| 263 | mRxLowerLoopThread = new Thread(32768); |
| 264 | mTxLowerLoopThread = new Thread(32768); |
| 265 | mTxLowerLoopThread->start((void * (*)(void*)) |
| 266 | TxLowerLoopAdapter,(void*) this); |
| 267 | mRxLowerLoopThread->start((void * (*)(void*)) |
| 268 | RxLowerLoopAdapter,(void*) this); |
| 269 | |
| 270 | /* Launch uplink and downlink burst processing threads */ |
| 271 | for (size_t i = 0; i < mChans; i++) { |
| 272 | TransceiverChannel *chan = new TransceiverChannel(this, i); |
| 273 | mRxServiceLoopThreads[i] = new Thread(32768); |
| 274 | mRxServiceLoopThreads[i]->start((void * (*)(void*)) |
| 275 | RxUpperLoopAdapter, (void*) chan); |
| 276 | |
| 277 | chan = new TransceiverChannel(this, i); |
| 278 | mTxPriorityQueueServiceLoopThreads[i] = new Thread(32768); |
| 279 | mTxPriorityQueueServiceLoopThreads[i]->start((void * (*)(void*)) |
| 280 | TxUpperLoopAdapter, (void*) chan); |
| 281 | } |
| 282 | |
| 283 | writeClockInterface(); |
| 284 | mOn = true; |
| 285 | return true; |
| 286 | } |
| 287 | |
| 288 | /* |
| 289 | * Stop the transceiver |
| 290 | * |
| 291 | * Perform stopping by disabling receive streaming and issuing cancellation |
| 292 | * requests to running threads. Most threads will timeout and terminate once |
| 293 | * device is disabled, but the transmit loop may block waiting on the central |
| 294 | * UMTS clock. Explicitly signal the clock to make sure that the transmit loop |
| 295 | * makes it to the thread cancellation point. |
| 296 | */ |
| 297 | void Transceiver::stop() |
| 298 | { |
| 299 | ScopedLock lock(mLock); |
| 300 | |
| 301 | if (!mOn) |
| 302 | return; |
| 303 | |
| 304 | LOG(NOTICE) << "Stopping the transceiver"; |
| 305 | mTxLowerLoopThread->cancel(); |
| 306 | mRxLowerLoopThread->cancel(); |
| 307 | |
| 308 | for (size_t i = 0; i < mChans; i++) { |
| 309 | mRxServiceLoopThreads[i]->cancel(); |
| 310 | mTxPriorityQueueServiceLoopThreads[i]->cancel(); |
| 311 | } |
| 312 | |
| 313 | LOG(INFO) << "Stopping the device"; |
| 314 | mRadioInterface->stop(); |
| 315 | |
| 316 | for (size_t i = 0; i < mChans; i++) { |
| 317 | mRxServiceLoopThreads[i]->join(); |
| 318 | mTxPriorityQueueServiceLoopThreads[i]->join(); |
| 319 | delete mRxServiceLoopThreads[i]; |
| 320 | delete mTxPriorityQueueServiceLoopThreads[i]; |
| 321 | |
| 322 | mTxPriorityQueues[i].clear(); |
| 323 | } |
| 324 | |
| 325 | mTxLowerLoopThread->join(); |
| 326 | mRxLowerLoopThread->join(); |
| 327 | delete mTxLowerLoopThread; |
| 328 | delete mRxLowerLoopThread; |
| 329 | |
| 330 | mOn = false; |
| 331 | LOG(NOTICE) << "Transceiver stopped"; |
| 332 | } |
| 333 | |
Thomas Tsou | a2fe91a | 2013-11-13 22:48:11 -0500 | [diff] [blame] | 334 | void Transceiver::addRadioVector(size_t chan, BitVector &bits, |
Thomas Tsou | 204a9f1 | 2013-10-29 18:34:16 -0400 | [diff] [blame] | 335 | int RSSI, GSM::Time &wTime) |
dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 336 | { |
Thomas Tsou | a2fe91a | 2013-11-13 22:48:11 -0500 | [diff] [blame] | 337 | signalVector *burst; |
| 338 | radioVector *radio_burst; |
| 339 | |
Thomas Tsou | 204a9f1 | 2013-10-29 18:34:16 -0400 | [diff] [blame] | 340 | if (chan >= mTxPriorityQueues.size()) { |
| 341 | LOG(ALERT) << "Invalid channel " << chan; |
| 342 | return; |
| 343 | } |
| 344 | |
Thomas Tsou | 2d0c00b | 2013-11-14 15:28:23 -0500 | [diff] [blame] | 345 | if (wTime.TN() > 7) { |
| 346 | LOG(ALERT) << "Received burst with invalid slot " << wTime.TN(); |
| 347 | return; |
| 348 | } |
| 349 | |
Tom Tsou | b0aefcb | 2016-03-06 03:44:34 -0800 | [diff] [blame] | 350 | /* Use the number of bits as the EDGE burst indicator */ |
| 351 | if (bits.size() == EDGE_BURST_NBITS) |
| 352 | burst = modulateEdgeBurst(bits, mSPSTx); |
| 353 | else |
| 354 | burst = modulateBurst(bits, 8 + (wTime.TN() % 4 == 0), mSPSTx); |
| 355 | |
Thomas Tsou | a2fe91a | 2013-11-13 22:48:11 -0500 | [diff] [blame] | 356 | scaleVector(*burst, txFullScale * pow(10, -RSSI / 10)); |
dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 357 | |
Thomas Tsou | a2fe91a | 2013-11-13 22:48:11 -0500 | [diff] [blame] | 358 | radio_burst = new radioVector(wTime, burst); |
| 359 | |
| 360 | mTxPriorityQueues[chan].write(radio_burst); |
dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 361 | } |
| 362 | |
Thomas Tsou | 15d743e | 2014-01-25 02:34:03 -0500 | [diff] [blame] | 363 | void Transceiver::updateFillerTable(size_t chan, radioVector *burst) |
| 364 | { |
| 365 | int TN, modFN; |
| 366 | TransceiverState *state = &mStates[chan]; |
| 367 | |
| 368 | TN = burst->getTime().TN(); |
| 369 | modFN = burst->getTime().FN() % state->fillerModulus[TN]; |
| 370 | |
| 371 | delete state->fillerTable[modFN][TN]; |
| 372 | state->fillerTable[modFN][TN] = burst->getVector(); |
| 373 | burst->setVector(NULL); |
| 374 | } |
| 375 | |
dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 376 | void Transceiver::pushRadioVector(GSM::Time &nowTime) |
| 377 | { |
Thomas Tsou | 204a9f1 | 2013-10-29 18:34:16 -0400 | [diff] [blame] | 378 | int TN, modFN; |
| 379 | radioVector *burst; |
| 380 | TransceiverState *state; |
| 381 | std::vector<signalVector *> bursts(mChans); |
| 382 | std::vector<bool> zeros(mChans); |
Thomas Tsou | 15d743e | 2014-01-25 02:34:03 -0500 | [diff] [blame] | 383 | std::vector<bool> filler(mChans, true); |
dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 384 | |
Thomas Tsou | 204a9f1 | 2013-10-29 18:34:16 -0400 | [diff] [blame] | 385 | for (size_t i = 0; i < mChans; i ++) { |
| 386 | state = &mStates[i]; |
dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 387 | |
Thomas Tsou | 204a9f1 | 2013-10-29 18:34:16 -0400 | [diff] [blame] | 388 | while ((burst = mTxPriorityQueues[i].getStaleBurst(nowTime))) { |
| 389 | LOG(NOTICE) << "dumping STALE burst in TRX->USRP interface"; |
Thomas Tsou | 15d743e | 2014-01-25 02:34:03 -0500 | [diff] [blame] | 390 | if (state->mRetrans) |
| 391 | updateFillerTable(i, burst); |
Thomas Tsou | a2fe91a | 2013-11-13 22:48:11 -0500 | [diff] [blame] | 392 | delete burst; |
Thomas Tsou | 204a9f1 | 2013-10-29 18:34:16 -0400 | [diff] [blame] | 393 | } |
| 394 | |
| 395 | TN = nowTime.TN(); |
| 396 | modFN = nowTime.FN() % state->fillerModulus[TN]; |
| 397 | |
| 398 | bursts[i] = state->fillerTable[modFN][TN]; |
| 399 | zeros[i] = state->chanType[TN] == NONE; |
| 400 | |
| 401 | if ((burst = mTxPriorityQueues[i].getCurrentBurst(nowTime))) { |
Thomas Tsou | a2fe91a | 2013-11-13 22:48:11 -0500 | [diff] [blame] | 402 | bursts[i] = burst->getVector(); |
Thomas Tsou | 15d743e | 2014-01-25 02:34:03 -0500 | [diff] [blame] | 403 | |
| 404 | if (state->mRetrans) { |
| 405 | updateFillerTable(i, burst); |
| 406 | } else { |
| 407 | burst->setVector(NULL); |
| 408 | filler[i] = false; |
| 409 | } |
| 410 | |
Thomas Tsou | a2fe91a | 2013-11-13 22:48:11 -0500 | [diff] [blame] | 411 | delete burst; |
Thomas Tsou | 204a9f1 | 2013-10-29 18:34:16 -0400 | [diff] [blame] | 412 | } |
dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 413 | } |
| 414 | |
Thomas Tsou | 204a9f1 | 2013-10-29 18:34:16 -0400 | [diff] [blame] | 415 | mRadioInterface->driveTransmitRadio(bursts, zeros); |
| 416 | |
Thomas Tsou | 15d743e | 2014-01-25 02:34:03 -0500 | [diff] [blame] | 417 | for (size_t i = 0; i < mChans; i++) { |
| 418 | if (!filler[i]) |
| 419 | delete bursts[i]; |
| 420 | } |
dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 421 | } |
| 422 | |
Thomas Tsou | 204a9f1 | 2013-10-29 18:34:16 -0400 | [diff] [blame] | 423 | void Transceiver::setModulus(size_t timeslot, size_t chan) |
dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 424 | { |
Thomas Tsou | 204a9f1 | 2013-10-29 18:34:16 -0400 | [diff] [blame] | 425 | TransceiverState *state = &mStates[chan]; |
| 426 | |
| 427 | switch (state->chanType[timeslot]) { |
dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 428 | case NONE: |
| 429 | case I: |
| 430 | case II: |
| 431 | case III: |
| 432 | case FILL: |
Thomas Tsou | 204a9f1 | 2013-10-29 18:34:16 -0400 | [diff] [blame] | 433 | state->fillerModulus[timeslot] = 26; |
dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 434 | break; |
| 435 | case IV: |
| 436 | case VI: |
| 437 | case V: |
Thomas Tsou | 204a9f1 | 2013-10-29 18:34:16 -0400 | [diff] [blame] | 438 | state->fillerModulus[timeslot] = 51; |
dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 439 | break; |
| 440 | //case V: |
| 441 | case VII: |
Thomas Tsou | 204a9f1 | 2013-10-29 18:34:16 -0400 | [diff] [blame] | 442 | state->fillerModulus[timeslot] = 102; |
dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 443 | break; |
ttsou | fc40a84 | 2013-06-09 22:38:18 +0000 | [diff] [blame] | 444 | case XIII: |
Thomas Tsou | 204a9f1 | 2013-10-29 18:34:16 -0400 | [diff] [blame] | 445 | state->fillerModulus[timeslot] = 52; |
ttsou | fc40a84 | 2013-06-09 22:38:18 +0000 | [diff] [blame] | 446 | break; |
dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 447 | default: |
| 448 | break; |
| 449 | } |
| 450 | } |
| 451 | |
| 452 | |
Thomas Tsou | 204a9f1 | 2013-10-29 18:34:16 -0400 | [diff] [blame] | 453 | Transceiver::CorrType Transceiver::expectedCorrType(GSM::Time currTime, |
| 454 | size_t chan) |
dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 455 | { |
Alexander Chemeris | 5a06806 | 2015-06-20 01:38:47 +0300 | [diff] [blame] | 456 | static int tchh_subslot[26] = { 0,1,0,1,0,1,0,1,0,1,0,1,0,0,1,0,1,0,1,0,1,0,1,0,1,1 }; |
| 457 | static int sdcch4_subslot[102] = { 3,3,3,3,0,0,2,2,2,2,3,3,3,3,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,1,1,1,0,0,2,2,2,2, |
| 458 | 3,3,3,3,0,0,0,0,0,0,1,1,1,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,1,1,1,0,0,2,2,2,2 }; |
| 459 | static int sdcch8_subslot[102] = { 5,5,5,5,6,6,6,6,7,7,7,7,0,0,0,0,0,0,0,1,1,1,1,2,2,2,2,3,3,3,3,4,4,4,4,5,5,5,5,6,6,6,6,7,7,7,7,0,0,0,0, |
| 460 | 1,1,1,1,2,2,2,2,3,3,3,3,0,0,0,0,0,0,0,1,1,1,1,2,2,2,2,3,3,3,3,4,4,4,4,5,5,5,5,6,6,6,6,7,7,7,7,4,4,4,4 }; |
Thomas Tsou | 204a9f1 | 2013-10-29 18:34:16 -0400 | [diff] [blame] | 461 | TransceiverState *state = &mStates[chan]; |
dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 462 | unsigned burstTN = currTime.TN(); |
| 463 | unsigned burstFN = currTime.FN(); |
Alexander Chemeris | 5a06806 | 2015-06-20 01:38:47 +0300 | [diff] [blame] | 464 | int subch; |
dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 465 | |
Thomas Tsou | 204a9f1 | 2013-10-29 18:34:16 -0400 | [diff] [blame] | 466 | switch (state->chanType[burstTN]) { |
dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 467 | case NONE: |
| 468 | return OFF; |
| 469 | break; |
| 470 | case FILL: |
| 471 | return IDLE; |
| 472 | break; |
| 473 | case I: |
Alexander Chemeris | 5a06806 | 2015-06-20 01:38:47 +0300 | [diff] [blame] | 474 | // TODO: Are we expecting RACH on an IDLE frame? |
| 475 | /* if (burstFN % 26 == 25) |
| 476 | return IDLE;*/ |
| 477 | if (mHandover[burstTN][0]) |
| 478 | return RACH; |
dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 479 | return TSC; |
dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 480 | break; |
| 481 | case II: |
Alexander Chemeris | 5a06806 | 2015-06-20 01:38:47 +0300 | [diff] [blame] | 482 | subch = tchh_subslot[burstFN % 26]; |
| 483 | if (subch == 1) |
| 484 | return IDLE; |
| 485 | if (mHandover[burstTN][0]) |
| 486 | return RACH; |
ttsou | 2064297 | 2013-03-27 22:00:25 +0000 | [diff] [blame] | 487 | return TSC; |
dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 488 | break; |
| 489 | case III: |
Alexander Chemeris | 5a06806 | 2015-06-20 01:38:47 +0300 | [diff] [blame] | 490 | subch = tchh_subslot[burstFN % 26]; |
| 491 | if (mHandover[burstTN][subch]) |
| 492 | return RACH; |
dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 493 | return TSC; |
| 494 | break; |
| 495 | case IV: |
| 496 | case VI: |
| 497 | return RACH; |
| 498 | break; |
| 499 | case V: { |
| 500 | int mod51 = burstFN % 51; |
| 501 | if ((mod51 <= 36) && (mod51 >= 14)) |
| 502 | return RACH; |
| 503 | else if ((mod51 == 4) || (mod51 == 5)) |
| 504 | return RACH; |
| 505 | else if ((mod51 == 45) || (mod51 == 46)) |
| 506 | return RACH; |
Alexander Chemeris | 5a06806 | 2015-06-20 01:38:47 +0300 | [diff] [blame] | 507 | else if (mHandover[burstTN][sdcch4_subslot[burstFN % 102]]) |
| 508 | return RACH; |
dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 509 | else |
| 510 | return TSC; |
| 511 | break; |
| 512 | } |
| 513 | case VII: |
| 514 | if ((burstFN % 51 <= 14) && (burstFN % 51 >= 12)) |
| 515 | return IDLE; |
Alexander Chemeris | 5a06806 | 2015-06-20 01:38:47 +0300 | [diff] [blame] | 516 | else if (mHandover[burstTN][sdcch8_subslot[burstFN % 102]]) |
| 517 | return RACH; |
dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 518 | else |
| 519 | return TSC; |
| 520 | break; |
ttsou | fc40a84 | 2013-06-09 22:38:18 +0000 | [diff] [blame] | 521 | case XIII: { |
| 522 | int mod52 = burstFN % 52; |
| 523 | if ((mod52 == 12) || (mod52 == 38)) |
| 524 | return RACH; |
| 525 | else if ((mod52 == 25) || (mod52 == 51)) |
| 526 | return IDLE; |
| 527 | else |
| 528 | return TSC; |
| 529 | break; |
| 530 | } |
dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 531 | case LOOPBACK: |
| 532 | if ((burstFN % 51 <= 50) && (burstFN % 51 >=48)) |
| 533 | return IDLE; |
| 534 | else |
| 535 | return TSC; |
| 536 | break; |
| 537 | default: |
| 538 | return OFF; |
| 539 | break; |
| 540 | } |
dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 541 | } |
Thomas Tsou | fa3a787 | 2013-10-17 21:23:34 -0400 | [diff] [blame] | 542 | |
Alexander Chemeris | 9664c3a | 2016-04-20 08:42:58 +0300 | [diff] [blame] | 543 | int Transceiver::detectBurst(signalVector &burst, |
| 544 | complex &, float &toa, CorrType type) |
Thomas Tsou | 30421a7 | 2013-11-13 23:14:48 -0500 | [diff] [blame] | 545 | { |
Tom Tsou | a84e162 | 2016-06-29 14:50:25 -0700 | [diff] [blame] | 546 | int rc = 0; |
Thomas Tsou | 30421a7 | 2013-11-13 23:14:48 -0500 | [diff] [blame] | 547 | |
Tom Tsou | 4656940 | 2016-03-06 01:59:38 -0800 | [diff] [blame] | 548 | switch (type) { |
Tom Tsou | b0aefcb | 2016-03-06 03:44:34 -0800 | [diff] [blame] | 549 | case EDGE: |
Tom Tsou | a84e162 | 2016-06-29 14:50:25 -0700 | [diff] [blame] | 550 | rc = detectEdgeBurst(burst, mTSC, BURST_THRESH, mSPSRx, |
Alexander Chemeris | 78d1fc9 | 2016-03-19 21:16:22 +0300 | [diff] [blame] | 551 | amp, toa, mMaxExpectedDelayNB); |
Tom Tsou | b0aefcb | 2016-03-06 03:44:34 -0800 | [diff] [blame] | 552 | if (rc > 0) |
| 553 | break; |
| 554 | else |
| 555 | type = TSC; |
Tom Tsou | 4656940 | 2016-03-06 01:59:38 -0800 | [diff] [blame] | 556 | case TSC: |
Tom Tsou | a84e162 | 2016-06-29 14:50:25 -0700 | [diff] [blame] | 557 | rc = analyzeTrafficBurst(burst, mTSC, BURST_THRESH, mSPSRx, |
Alexander Chemeris | 78d1fc9 | 2016-03-19 21:16:22 +0300 | [diff] [blame] | 558 | amp, toa, mMaxExpectedDelayNB); |
Tom Tsou | 4656940 | 2016-03-06 01:59:38 -0800 | [diff] [blame] | 559 | break; |
| 560 | case RACH: |
Tom Tsou | a84e162 | 2016-06-29 14:50:25 -0700 | [diff] [blame] | 561 | rc = detectRACHBurst(burst, BURST_THRESH, mSPSRx, amp, toa, |
Alexander Chemeris | 78d1fc9 | 2016-03-19 21:16:22 +0300 | [diff] [blame] | 562 | mMaxExpectedDelayAB); |
Tom Tsou | 4656940 | 2016-03-06 01:59:38 -0800 | [diff] [blame] | 563 | break; |
| 564 | default: |
| 565 | LOG(ERR) << "Invalid correlation type"; |
| 566 | } |
| 567 | |
Tom Tsou | b0aefcb | 2016-03-06 03:44:34 -0800 | [diff] [blame] | 568 | if (rc > 0) |
| 569 | return type; |
Tom Tsou | 4656940 | 2016-03-06 01:59:38 -0800 | [diff] [blame] | 570 | |
| 571 | return rc; |
Thomas Tsou | 30421a7 | 2013-11-13 23:14:48 -0500 | [diff] [blame] | 572 | } |
| 573 | |
Thomas Tsou | 30421a7 | 2013-11-13 23:14:48 -0500 | [diff] [blame] | 574 | |
| 575 | /* |
Tom Tsou | 4656940 | 2016-03-06 01:59:38 -0800 | [diff] [blame] | 576 | * Demodulate GMSK by direct rotation and soft slicing. |
Thomas Tsou | 30421a7 | 2013-11-13 23:14:48 -0500 | [diff] [blame] | 577 | */ |
Alexander Chemeris | 9664c3a | 2016-04-20 08:42:58 +0300 | [diff] [blame] | 578 | SoftVector *Transceiver::demodulate(signalVector &burst, complex amp, |
Tom Tsou | b0aefcb | 2016-03-06 03:44:34 -0800 | [diff] [blame] | 579 | float toa, CorrType type) |
Thomas Tsou | 30421a7 | 2013-11-13 23:14:48 -0500 | [diff] [blame] | 580 | { |
Tom Tsou | b0aefcb | 2016-03-06 03:44:34 -0800 | [diff] [blame] | 581 | if (type == EDGE) |
| 582 | return demodEdgeBurst(burst, mSPSRx, amp, toa); |
| 583 | |
Thomas Tsou | 30421a7 | 2013-11-13 23:14:48 -0500 | [diff] [blame] | 584 | return demodulateBurst(burst, mSPSRx, amp, toa); |
| 585 | } |
| 586 | |
Alexander Chemeris | e692ce9 | 2015-06-12 00:15:31 -0400 | [diff] [blame] | 587 | void writeToFile(radioVector *radio_burst, size_t chan) |
| 588 | { |
| 589 | GSM::Time time = radio_burst->getTime(); |
| 590 | std::ostringstream fname; |
| 591 | fname << chan << "_" << time.FN() << "_" << time.TN() << ".fc"; |
| 592 | std::ofstream outfile (fname.str().c_str(), std::ofstream::binary); |
| 593 | outfile.write((char*)radio_burst->getVector()->begin(), radio_burst->getVector()->size() * 2 * sizeof(float)); |
| 594 | outfile.close(); |
| 595 | } |
| 596 | |
Thomas Tsou | 30421a7 | 2013-11-13 23:14:48 -0500 | [diff] [blame] | 597 | /* |
| 598 | * Pull bursts from the FIFO and handle according to the slot |
| 599 | * and burst correlation type. Equalzation is currently disabled. |
| 600 | */ |
Alexander Chemeris | 2b54210 | 2015-06-08 22:46:38 -0400 | [diff] [blame] | 601 | SoftVector *Transceiver::pullRadioVector(GSM::Time &wTime, double &RSSI, bool &isRssiValid, |
Alexander Chemeris | dbe26ab | 2015-06-04 00:14:51 -0400 | [diff] [blame] | 602 | double &timingOffset, double &noise, |
| 603 | size_t chan) |
dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 604 | { |
Tom Tsou | b0aefcb | 2016-03-06 03:44:34 -0800 | [diff] [blame] | 605 | int rc; |
Thomas Tsou | 30421a7 | 2013-11-13 23:14:48 -0500 | [diff] [blame] | 606 | complex amp; |
| 607 | float toa, pow, max = -1.0, avg = 0.0; |
Thomas Tsou | e90a42b | 2013-11-13 23:38:09 -0500 | [diff] [blame] | 608 | int max_i = -1; |
Thomas Tsou | 30421a7 | 2013-11-13 23:14:48 -0500 | [diff] [blame] | 609 | signalVector *burst; |
Thomas Tsou | ef25dba | 2013-11-14 15:31:24 -0500 | [diff] [blame] | 610 | SoftVector *bits = NULL; |
Thomas Tsou | a0179e3 | 2013-11-14 15:52:04 -0500 | [diff] [blame] | 611 | TransceiverState *state = &mStates[chan]; |
Alexander Chemeris | 2b54210 | 2015-06-08 22:46:38 -0400 | [diff] [blame] | 612 | isRssiValid = false; |
dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 613 | |
Thomas Tsou | 30421a7 | 2013-11-13 23:14:48 -0500 | [diff] [blame] | 614 | /* Blocking FIFO read */ |
| 615 | radioVector *radio_burst = mReceiveFIFO[chan]->read(); |
| 616 | if (!radio_burst) |
| 617 | return NULL; |
dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 618 | |
Thomas Tsou | 30421a7 | 2013-11-13 23:14:48 -0500 | [diff] [blame] | 619 | /* Set time and determine correlation type */ |
| 620 | GSM::Time time = radio_burst->getTime(); |
| 621 | CorrType type = expectedCorrType(time, chan); |
dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 622 | |
Alexander Chemeris | e692ce9 | 2015-06-12 00:15:31 -0400 | [diff] [blame] | 623 | /* Debug: dump bursts to disk */ |
| 624 | /* bits 0-7 - chan 0 timeslots |
| 625 | * bits 8-15 - chan 1 timeslots */ |
| 626 | if (mWriteBurstToDiskMask & ((1<<time.TN()) << (8*chan))) |
| 627 | writeToFile(radio_burst, chan); |
| 628 | |
Alexander Chemeris | 2b54210 | 2015-06-08 22:46:38 -0400 | [diff] [blame] | 629 | /* No processing if the timeslot is off. |
| 630 | * Not even power level or noise calculation. */ |
| 631 | if (type == OFF) { |
Thomas Tsou | 30421a7 | 2013-11-13 23:14:48 -0500 | [diff] [blame] | 632 | delete radio_burst; |
dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 633 | return NULL; |
| 634 | } |
kurtis.heimerl | 3ed6fb7 | 2011-11-26 03:17:52 +0000 | [diff] [blame] | 635 | |
Thomas Tsou | e90a42b | 2013-11-13 23:38:09 -0500 | [diff] [blame] | 636 | /* Select the diversity channel with highest energy */ |
| 637 | for (size_t i = 0; i < radio_burst->chans(); i++) { |
| 638 | energyDetect(*radio_burst->getVector(i), 20 * mSPSRx, 0.0, &pow); |
| 639 | if (pow > max) { |
| 640 | max = pow; |
| 641 | max_i = i; |
| 642 | } |
| 643 | avg += pow; |
| 644 | } |
| 645 | |
| 646 | if (max_i < 0) { |
| 647 | LOG(ALERT) << "Received empty burst"; |
| 648 | delete radio_burst; |
| 649 | return NULL; |
| 650 | } |
| 651 | |
Thomas Tsou | 30421a7 | 2013-11-13 23:14:48 -0500 | [diff] [blame] | 652 | /* Average noise on diversity paths and update global levels */ |
Thomas Tsou | e90a42b | 2013-11-13 23:38:09 -0500 | [diff] [blame] | 653 | burst = radio_burst->getVector(max_i); |
Thomas Tsou | ef25dba | 2013-11-14 15:31:24 -0500 | [diff] [blame] | 654 | avg = sqrt(avg / radio_burst->chans()); |
Alexander Chemeris | 2b54210 | 2015-06-08 22:46:38 -0400 | [diff] [blame] | 655 | |
| 656 | wTime = time; |
| 657 | RSSI = 20.0 * log10(rxFullScale / avg); |
| 658 | |
| 659 | /* RSSI estimation are valid */ |
| 660 | isRssiValid = true; |
| 661 | |
| 662 | if (type == IDLE) { |
| 663 | /* Update noise levels */ |
| 664 | state->mNoises.insert(avg); |
| 665 | state->mNoiseLev = state->mNoises.avg(); |
| 666 | noise = 20.0 * log10(rxFullScale / state->mNoiseLev); |
| 667 | |
| 668 | delete radio_burst; |
| 669 | return NULL; |
| 670 | } else { |
| 671 | /* Do not update noise levels */ |
| 672 | noise = 20.0 * log10(rxFullScale / state->mNoiseLev); |
| 673 | } |
Thomas Tsou | fa3a787 | 2013-10-17 21:23:34 -0400 | [diff] [blame] | 674 | |
Thomas Tsou | 30421a7 | 2013-11-13 23:14:48 -0500 | [diff] [blame] | 675 | /* Detect normal or RACH bursts */ |
Alexander Chemeris | 9664c3a | 2016-04-20 08:42:58 +0300 | [diff] [blame] | 676 | rc = detectBurst(*burst, amp, toa, type); |
Thomas Tsou | f078273 | 2013-10-29 15:55:47 -0400 | [diff] [blame] | 677 | |
Tom Tsou | b0aefcb | 2016-03-06 03:44:34 -0800 | [diff] [blame] | 678 | if (rc > 0) { |
| 679 | type = (CorrType) rc; |
| 680 | } else if (rc <= 0) { |
| 681 | if (rc == -SIGERR_CLIP) { |
Alexander Chemeris | 954b118 | 2015-06-04 15:39:41 -0400 | [diff] [blame] | 682 | LOG(WARNING) << "Clipping detected on received RACH or Normal Burst"; |
Tom Tsou | b0aefcb | 2016-03-06 03:44:34 -0800 | [diff] [blame] | 683 | } else if (rc != SIGERR_NONE) { |
Alexander Chemeris | 954b118 | 2015-06-04 15:39:41 -0400 | [diff] [blame] | 684 | LOG(WARNING) << "Unhandled RACH or Normal Burst detection error"; |
Tom Tsou | 577cd02 | 2015-05-18 13:57:54 -0700 | [diff] [blame] | 685 | } |
| 686 | |
Thomas Tsou | 30421a7 | 2013-11-13 23:14:48 -0500 | [diff] [blame] | 687 | delete radio_burst; |
| 688 | return NULL; |
dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 689 | } |
dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 690 | |
Alexander Chemeris | 2b54210 | 2015-06-08 22:46:38 -0400 | [diff] [blame] | 691 | timingOffset = toa / mSPSRx; |
| 692 | |
Alexander Chemeris | 9664c3a | 2016-04-20 08:42:58 +0300 | [diff] [blame] | 693 | bits = demodulate(*burst, amp, toa, type); |
Thomas Tsou | ef25dba | 2013-11-14 15:31:24 -0500 | [diff] [blame] | 694 | |
Thomas Tsou | 30421a7 | 2013-11-13 23:14:48 -0500 | [diff] [blame] | 695 | delete radio_burst; |
Thomas Tsou | 30421a7 | 2013-11-13 23:14:48 -0500 | [diff] [blame] | 696 | return bits; |
dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 697 | } |
| 698 | |
dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 699 | void Transceiver::reset() |
| 700 | { |
Thomas Tsou | 204a9f1 | 2013-10-29 18:34:16 -0400 | [diff] [blame] | 701 | for (size_t i = 0; i < mTxPriorityQueues.size(); i++) |
| 702 | mTxPriorityQueues[i].clear(); |
dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 703 | } |
| 704 | |
| 705 | |
Thomas Tsou | 204a9f1 | 2013-10-29 18:34:16 -0400 | [diff] [blame] | 706 | void Transceiver::driveControl(size_t chan) |
dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 707 | { |
dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 708 | int MAX_PACKET_LENGTH = 100; |
| 709 | |
| 710 | // check control socket |
| 711 | char buffer[MAX_PACKET_LENGTH]; |
| 712 | int msgLen = -1; |
| 713 | buffer[0] = '\0'; |
Thomas Tsou | d647ec5 | 2013-10-29 15:17:34 -0400 | [diff] [blame] | 714 | |
Tom Tsou | 2c650a6 | 2016-04-28 21:55:17 -0700 | [diff] [blame] | 715 | msgLen = mCtrlSockets[chan]->read(buffer, sizeof(buffer)); |
dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 716 | |
| 717 | if (msgLen < 1) { |
| 718 | return; |
| 719 | } |
| 720 | |
| 721 | char cmdcheck[4]; |
| 722 | char command[MAX_PACKET_LENGTH]; |
| 723 | char response[MAX_PACKET_LENGTH]; |
| 724 | |
| 725 | sscanf(buffer,"%3s %s",cmdcheck,command); |
Thomas Tsou | 204a9f1 | 2013-10-29 18:34:16 -0400 | [diff] [blame] | 726 | |
| 727 | if (!chan) |
| 728 | writeClockInterface(); |
dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 729 | |
| 730 | if (strcmp(cmdcheck,"CMD")!=0) { |
| 731 | LOG(WARNING) << "bogus message on control interface"; |
| 732 | return; |
| 733 | } |
| 734 | LOG(INFO) << "command is " << buffer; |
| 735 | |
| 736 | if (strcmp(command,"POWEROFF")==0) { |
Tom Tsou | eb54bdd | 2014-11-25 16:06:32 -0800 | [diff] [blame] | 737 | stop(); |
| 738 | sprintf(response,"RSP POWEROFF 0"); |
dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 739 | } |
| 740 | else if (strcmp(command,"POWERON")==0) { |
Tom Tsou | eb54bdd | 2014-11-25 16:06:32 -0800 | [diff] [blame] | 741 | if (!start()) |
dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 742 | sprintf(response,"RSP POWERON 1"); |
Tom Tsou | eb54bdd | 2014-11-25 16:06:32 -0800 | [diff] [blame] | 743 | else |
dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 744 | sprintf(response,"RSP POWERON 0"); |
Alexander Chemeris | 5a06806 | 2015-06-20 01:38:47 +0300 | [diff] [blame] | 745 | for (int i = 0; i < 8; i++) { |
| 746 | for (int j = 0; j < 8; j++) |
| 747 | mHandover[i][j] = false; |
| 748 | } |
| 749 | } |
| 750 | else if (strcmp(command,"HANDOVER")==0){ |
| 751 | int ts=0,ss=0; |
| 752 | sscanf(buffer,"%3s %s %d %d",cmdcheck,command,&ts,&ss); |
| 753 | mHandover[ts][ss] = true; |
| 754 | LOG(WARNING) << "HANDOVER RACH at timeslot " << ts << " subslot " << ss; |
| 755 | sprintf(response,"RSP HANDOVER 0 %d %d",ts,ss); |
| 756 | } |
| 757 | else if (strcmp(command,"NOHANDOVER")==0){ |
| 758 | int ts=0,ss=0; |
| 759 | sscanf(buffer,"%3s %s %d %d",cmdcheck,command,&ts,&ss); |
| 760 | mHandover[ts][ss] = false; |
| 761 | LOG(WARNING) << "NOHANDOVER at timeslot " << ts << " subslot " << ss; |
| 762 | sprintf(response,"RSP NOHANDOVER 0 %d %d",ts,ss); |
dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 763 | } |
| 764 | else if (strcmp(command,"SETMAXDLY")==0) { |
| 765 | //set expected maximum time-of-arrival |
| 766 | int maxDelay; |
| 767 | sscanf(buffer,"%3s %s %d",cmdcheck,command,&maxDelay); |
Alexander Chemeris | 78d1fc9 | 2016-03-19 21:16:22 +0300 | [diff] [blame] | 768 | mMaxExpectedDelayAB = maxDelay; // 1 GSM symbol is approx. 1 km |
dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 769 | sprintf(response,"RSP SETMAXDLY 0 %d",maxDelay); |
| 770 | } |
Alexander Chemeris | 78d1fc9 | 2016-03-19 21:16:22 +0300 | [diff] [blame] | 771 | else if (strcmp(command,"SETMAXDLYNB")==0) { |
| 772 | //set expected maximum time-of-arrival |
| 773 | int maxDelay; |
| 774 | sscanf(buffer,"%3s %s %d",cmdcheck,command,&maxDelay); |
| 775 | mMaxExpectedDelayNB = maxDelay; // 1 GSM symbol is approx. 1 km |
| 776 | sprintf(response,"RSP SETMAXDLYNB 0 %d",maxDelay); |
| 777 | } |
dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 778 | else if (strcmp(command,"SETRXGAIN")==0) { |
| 779 | //set expected maximum time-of-arrival |
| 780 | int newGain; |
| 781 | sscanf(buffer,"%3s %s %d",cmdcheck,command,&newGain); |
Thomas Tsou | 204a9f1 | 2013-10-29 18:34:16 -0400 | [diff] [blame] | 782 | newGain = mRadioInterface->setRxGain(newGain, chan); |
dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 783 | sprintf(response,"RSP SETRXGAIN 0 %d",newGain); |
| 784 | } |
| 785 | else if (strcmp(command,"NOISELEV")==0) { |
| 786 | if (mOn) { |
Thomas Tsou | a0179e3 | 2013-11-14 15:52:04 -0500 | [diff] [blame] | 787 | float lev = mStates[chan].mNoiseLev; |
dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 788 | sprintf(response,"RSP NOISELEV 0 %d", |
Thomas Tsou | a0179e3 | 2013-11-14 15:52:04 -0500 | [diff] [blame] | 789 | (int) round(20.0 * log10(rxFullScale / lev))); |
dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 790 | } |
| 791 | else { |
| 792 | sprintf(response,"RSP NOISELEV 1 0"); |
| 793 | } |
Thomas Tsou | cb269a3 | 2013-11-15 14:15:47 -0500 | [diff] [blame] | 794 | } |
| 795 | else if (!strcmp(command, "SETPOWER")) { |
Tom Tsou | a4d1a41 | 2014-11-25 15:46:56 -0800 | [diff] [blame] | 796 | int power; |
| 797 | sscanf(buffer, "%3s %s %d", cmdcheck, command, &power); |
| 798 | power = mRadioInterface->setPowerAttenuation(power, chan); |
| 799 | mStates[chan].mPower = power; |
| 800 | sprintf(response, "RSP SETPOWER 0 %d", power); |
dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 801 | } |
Thomas Tsou | cb269a3 | 2013-11-15 14:15:47 -0500 | [diff] [blame] | 802 | else if (!strcmp(command,"ADJPOWER")) { |
Tom Tsou | a4d1a41 | 2014-11-25 15:46:56 -0800 | [diff] [blame] | 803 | int power, step; |
| 804 | sscanf(buffer, "%3s %s %d", cmdcheck, command, &step); |
| 805 | power = mStates[chan].mPower + step; |
| 806 | power = mRadioInterface->setPowerAttenuation(power, chan); |
| 807 | mStates[chan].mPower = power; |
| 808 | sprintf(response, "RSP ADJPOWER 0 %d", power); |
dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 809 | } |
dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 810 | else if (strcmp(command,"RXTUNE")==0) { |
| 811 | // tune receiver |
| 812 | int freqKhz; |
| 813 | sscanf(buffer,"%3s %s %d",cmdcheck,command,&freqKhz); |
Thomas Tsou | 477b77c | 2013-11-15 16:13:59 -0500 | [diff] [blame] | 814 | mRxFreq = freqKhz * 1e3; |
Thomas Tsou | 204a9f1 | 2013-10-29 18:34:16 -0400 | [diff] [blame] | 815 | if (!mRadioInterface->tuneRx(mRxFreq, chan)) { |
dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 816 | LOG(ALERT) << "RX failed to tune"; |
| 817 | sprintf(response,"RSP RXTUNE 1 %d",freqKhz); |
| 818 | } |
| 819 | else |
| 820 | sprintf(response,"RSP RXTUNE 0 %d",freqKhz); |
| 821 | } |
| 822 | else if (strcmp(command,"TXTUNE")==0) { |
| 823 | // tune txmtr |
| 824 | int freqKhz; |
| 825 | sscanf(buffer,"%3s %s %d",cmdcheck,command,&freqKhz); |
Thomas Tsou | 477b77c | 2013-11-15 16:13:59 -0500 | [diff] [blame] | 826 | mTxFreq = freqKhz * 1e3; |
Thomas Tsou | 204a9f1 | 2013-10-29 18:34:16 -0400 | [diff] [blame] | 827 | if (!mRadioInterface->tuneTx(mTxFreq, chan)) { |
dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 828 | LOG(ALERT) << "TX failed to tune"; |
| 829 | sprintf(response,"RSP TXTUNE 1 %d",freqKhz); |
| 830 | } |
| 831 | else |
| 832 | sprintf(response,"RSP TXTUNE 0 %d",freqKhz); |
| 833 | } |
Thomas Tsou | d3fccea | 2013-11-15 14:22:53 -0500 | [diff] [blame] | 834 | else if (!strcmp(command,"SETTSC")) { |
dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 835 | // set TSC |
Thomas Tsou | 3f32ab5 | 2013-11-15 16:32:54 -0500 | [diff] [blame] | 836 | unsigned TSC; |
Thomas Tsou | d3fccea | 2013-11-15 14:22:53 -0500 | [diff] [blame] | 837 | sscanf(buffer, "%3s %s %d", cmdcheck, command, &TSC); |
Tom Tsou | c8c4eac | 2016-06-28 17:00:54 -0700 | [diff] [blame] | 838 | if ((TSC < 0) || (TSC > 7)) |
Thomas Tsou | d3fccea | 2013-11-15 14:22:53 -0500 | [diff] [blame] | 839 | sprintf(response, "RSP SETTSC 1 %d", TSC); |
| 840 | else if (chan && (TSC != mTSC)) |
| 841 | sprintf(response, "RSP SETTSC 1 %d", TSC); |
dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 842 | else { |
| 843 | mTSC = TSC; |
Thomas Tsou | 83e0689 | 2013-08-20 16:10:01 -0400 | [diff] [blame] | 844 | sprintf(response,"RSP SETTSC 0 %d", TSC); |
dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 845 | } |
| 846 | } |
| 847 | else if (strcmp(command,"SETSLOT")==0) { |
Alexander Chemeris | 1fe5282 | 2015-05-20 12:02:29 -0700 | [diff] [blame] | 848 | // set slot type |
dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 849 | int corrCode; |
| 850 | int timeslot; |
| 851 | sscanf(buffer,"%3s %s %d %d",cmdcheck,command,×lot,&corrCode); |
| 852 | if ((timeslot < 0) || (timeslot > 7)) { |
| 853 | LOG(WARNING) << "bogus message on control interface"; |
| 854 | sprintf(response,"RSP SETSLOT 1 %d %d",timeslot,corrCode); |
| 855 | return; |
| 856 | } |
Thomas Tsou | 204a9f1 | 2013-10-29 18:34:16 -0400 | [diff] [blame] | 857 | mStates[chan].chanType[timeslot] = (ChannelCombination) corrCode; |
| 858 | setModulus(timeslot, chan); |
dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 859 | sprintf(response,"RSP SETSLOT 0 %d %d",timeslot,corrCode); |
| 860 | |
| 861 | } |
Alexander Chemeris | e692ce9 | 2015-06-12 00:15:31 -0400 | [diff] [blame] | 862 | else if (strcmp(command,"_SETBURSTTODISKMASK")==0) { |
| 863 | // debug command! may change or disapear without notice |
| 864 | // set a mask which bursts to dump to disk |
| 865 | int mask; |
| 866 | sscanf(buffer,"%3s %s %d",cmdcheck,command,&mask); |
| 867 | mWriteBurstToDiskMask = mask; |
| 868 | sprintf(response,"RSP _SETBURSTTODISKMASK 0 %d",mask); |
| 869 | } |
dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 870 | else { |
| 871 | LOG(WARNING) << "bogus command " << command << " on control interface."; |
Alexander Chemeris | 4438a9f | 2013-04-08 00:14:08 +0200 | [diff] [blame] | 872 | sprintf(response,"RSP ERR 1"); |
dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 873 | } |
| 874 | |
Thomas Tsou | 204a9f1 | 2013-10-29 18:34:16 -0400 | [diff] [blame] | 875 | mCtrlSockets[chan]->write(response, strlen(response) + 1); |
dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 876 | } |
| 877 | |
Thomas Tsou | 204a9f1 | 2013-10-29 18:34:16 -0400 | [diff] [blame] | 878 | bool Transceiver::driveTxPriorityQueue(size_t chan) |
dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 879 | { |
Tom Tsou | e887108 | 2016-07-01 02:46:04 -0700 | [diff] [blame^] | 880 | int burstLen; |
| 881 | char buffer[EDGE_BURST_NBITS + 50]; |
dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 882 | |
| 883 | // check data socket |
Tom Tsou | 2c650a6 | 2016-04-28 21:55:17 -0700 | [diff] [blame] | 884 | size_t msgLen = mDataSockets[chan]->read(buffer, sizeof(buffer)); |
dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 885 | |
Tom Tsou | e887108 | 2016-07-01 02:46:04 -0700 | [diff] [blame^] | 886 | if (msgLen == gSlotLen + 1 + 4 + 1) { |
| 887 | burstLen = gSlotLen; |
| 888 | } else if (msgLen == EDGE_BURST_NBITS + 1 + 4 + 1) { |
| 889 | if (mSPSTx != 4) |
| 890 | return false; |
| 891 | |
| 892 | burstLen = EDGE_BURST_NBITS; |
| 893 | } else { |
dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 894 | LOG(ERR) << "badly formatted packet on GSM->TRX interface"; |
| 895 | return false; |
| 896 | } |
| 897 | |
| 898 | int timeSlot = (int) buffer[0]; |
| 899 | uint64_t frameNum = 0; |
| 900 | for (int i = 0; i < 4; i++) |
| 901 | frameNum = (frameNum << 8) | (0x0ff & buffer[i+1]); |
dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 902 | |
dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 903 | LOG(DEBUG) << "rcvd. burst at: " << GSM::Time(frameNum,timeSlot); |
| 904 | |
| 905 | int RSSI = (int) buffer[5]; |
Tom Tsou | e887108 | 2016-07-01 02:46:04 -0700 | [diff] [blame^] | 906 | static BitVector newBurst(burstLen); |
dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 907 | BitVector::iterator itr = newBurst.begin(); |
| 908 | char *bufferItr = buffer+6; |
| 909 | while (itr < newBurst.end()) |
| 910 | *itr++ = *bufferItr++; |
| 911 | |
| 912 | GSM::Time currTime = GSM::Time(frameNum,timeSlot); |
Thomas Tsou | 204a9f1 | 2013-10-29 18:34:16 -0400 | [diff] [blame] | 913 | |
| 914 | addRadioVector(chan, newBurst, RSSI, currTime); |
dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 915 | |
| 916 | return true; |
| 917 | |
| 918 | |
| 919 | } |
dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 920 | |
Thomas Tsou | 204a9f1 | 2013-10-29 18:34:16 -0400 | [diff] [blame] | 921 | void Transceiver::driveReceiveRadio() |
| 922 | { |
Alexander Chemeris | 6a2bf0d | 2015-05-24 19:28:09 -0400 | [diff] [blame] | 923 | if (!mRadioInterface->driveReceiveRadio()) { |
Thomas Tsou | 204a9f1 | 2013-10-29 18:34:16 -0400 | [diff] [blame] | 924 | usleep(100000); |
Alexander Chemeris | 6a2bf0d | 2015-05-24 19:28:09 -0400 | [diff] [blame] | 925 | } else { |
| 926 | if (mTransmitDeadlineClock > mLastClockUpdateTime + GSM::Time(216,0)) |
| 927 | writeClockInterface(); |
| 928 | } |
Thomas Tsou | 204a9f1 | 2013-10-29 18:34:16 -0400 | [diff] [blame] | 929 | } |
| 930 | |
Alexander Chemeris | 58e9591 | 2016-03-25 18:20:28 +0300 | [diff] [blame] | 931 | void Transceiver::logRxBurst(size_t chan, SoftVector *burst, GSM::Time time, double dbm, |
Tom Tsou | b0aefcb | 2016-03-06 03:44:34 -0800 | [diff] [blame] | 932 | double rssi, double noise, double toa) |
| 933 | { |
| 934 | LOG(DEBUG) << std::fixed << std::right |
Alexander Chemeris | 58e9591 | 2016-03-25 18:20:28 +0300 | [diff] [blame] | 935 | << " chan: " << chan |
Tom Tsou | b0aefcb | 2016-03-06 03:44:34 -0800 | [diff] [blame] | 936 | << " time: " << time |
| 937 | << " RSSI: " << std::setw(5) << std::setprecision(1) << rssi |
| 938 | << "dBFS/" << std::setw(6) << -dbm << "dBm" |
| 939 | << " noise: " << std::setw(5) << std::setprecision(1) << noise |
| 940 | << "dBFS/" << std::setw(6) << -(noise + rssiOffset) << "dBm" |
| 941 | << " TOA: " << std::setw(5) << std::setprecision(2) << toa |
| 942 | << " bits: " << *burst; |
| 943 | } |
| 944 | |
Thomas Tsou | 204a9f1 | 2013-10-29 18:34:16 -0400 | [diff] [blame] | 945 | void Transceiver::driveReceiveFIFO(size_t chan) |
| 946 | { |
dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 947 | SoftVector *rxBurst = NULL; |
Alexander Chemeris | e8905a0 | 2015-06-03 23:47:56 -0400 | [diff] [blame] | 948 | double RSSI; // in dBFS |
| 949 | double dBm; // in dBm |
| 950 | double TOA; // in symbols |
| 951 | int TOAint; // in 1/256 symbols |
Alexander Chemeris | dbe26ab | 2015-06-04 00:14:51 -0400 | [diff] [blame] | 952 | double noise; // noise level in dBFS |
dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 953 | GSM::Time burstTime; |
Alexander Chemeris | 2b54210 | 2015-06-08 22:46:38 -0400 | [diff] [blame] | 954 | bool isRssiValid; // are RSSI, noise and burstTime valid |
Tom Tsou | b0aefcb | 2016-03-06 03:44:34 -0800 | [diff] [blame] | 955 | unsigned nbits = gSlotLen; |
dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 956 | |
Alexander Chemeris | 2b54210 | 2015-06-08 22:46:38 -0400 | [diff] [blame] | 957 | rxBurst = pullRadioVector(burstTime, RSSI, isRssiValid, TOA, noise, chan); |
Tom Tsou | b0aefcb | 2016-03-06 03:44:34 -0800 | [diff] [blame] | 958 | if (!rxBurst) |
| 959 | return; |
dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 960 | |
Tom Tsou | b0aefcb | 2016-03-06 03:44:34 -0800 | [diff] [blame] | 961 | /* |
| 962 | * EDGE demodulator returns 444 (148 * 3) bits |
| 963 | */ |
| 964 | if (rxBurst->size() == gSlotLen * 3) |
| 965 | nbits = gSlotLen * 3; |
dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 966 | |
Tom Tsou | b0aefcb | 2016-03-06 03:44:34 -0800 | [diff] [blame] | 967 | dBm = RSSI + rssiOffset; |
Alexander Chemeris | 58e9591 | 2016-03-25 18:20:28 +0300 | [diff] [blame] | 968 | logRxBurst(chan, rxBurst, burstTime, dBm, RSSI, noise, TOA); |
Alexander Chemeris | dbe26ab | 2015-06-04 00:14:51 -0400 | [diff] [blame] | 969 | |
Tom Tsou | b0aefcb | 2016-03-06 03:44:34 -0800 | [diff] [blame] | 970 | TOAint = (int) (TOA * 256.0 + 0.5); // round to closest integer |
dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 971 | |
Tom Tsou | b0aefcb | 2016-03-06 03:44:34 -0800 | [diff] [blame] | 972 | char burstString[nbits + 10]; |
| 973 | burstString[0] = burstTime.TN(); |
| 974 | for (int i = 0; i < 4; i++) |
| 975 | burstString[1+i] = (burstTime.FN() >> ((3-i)*8)) & 0x0ff; |
| 976 | burstString[5] = (int)dBm; |
| 977 | burstString[6] = (TOAint >> 8) & 0x0ff; |
| 978 | burstString[7] = TOAint & 0x0ff; |
| 979 | SoftVector::iterator burstItr = rxBurst->begin(); |
dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 980 | |
Tom Tsou | b0aefcb | 2016-03-06 03:44:34 -0800 | [diff] [blame] | 981 | for (unsigned i = 0; i < nbits; i++) |
| 982 | burstString[8 + i] = (char) round((*burstItr++) * 255.0); |
| 983 | |
| 984 | burstString[nbits + 9] = '\0'; |
| 985 | delete rxBurst; |
| 986 | |
| 987 | mDataSockets[chan]->write(burstString, nbits + 10); |
dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 988 | } |
| 989 | |
Thomas Tsou | 204a9f1 | 2013-10-29 18:34:16 -0400 | [diff] [blame] | 990 | void Transceiver::driveTxFIFO() |
dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 991 | { |
| 992 | |
| 993 | /** |
| 994 | Features a carefully controlled latency mechanism, to |
| 995 | assure that transmit packets arrive at the radio/USRP |
| 996 | before they need to be transmitted. |
| 997 | |
| 998 | Deadline clock indicates the burst that needs to be |
| 999 | pushed into the FIFO right NOW. If transmit queue does |
| 1000 | not have a burst, stick in filler data. |
| 1001 | */ |
| 1002 | |
| 1003 | |
| 1004 | RadioClock *radioClock = (mRadioInterface->getClock()); |
| 1005 | |
| 1006 | if (mOn) { |
| 1007 | //radioClock->wait(); // wait until clock updates |
| 1008 | LOG(DEBUG) << "radio clock " << radioClock->get(); |
| 1009 | while (radioClock->get() + mTransmitLatency > mTransmitDeadlineClock) { |
| 1010 | // if underrun, then we're not providing bursts to radio/USRP fast |
| 1011 | // enough. Need to increase latency by one GSM frame. |
Thomas Tsou | 02d88d1 | 2013-04-05 15:36:30 -0400 | [diff] [blame] | 1012 | if (mRadioInterface->getWindowType() == RadioDevice::TX_WINDOW_USRP1) { |
kurtis.heimerl | e380af3 | 2011-11-26 03:18:55 +0000 | [diff] [blame] | 1013 | if (mRadioInterface->isUnderrun()) { |
ttsou | 2173abf | 2012-08-08 00:51:31 +0000 | [diff] [blame] | 1014 | // only update latency at the defined frame interval |
| 1015 | if (radioClock->get() > mLatencyUpdateTime + GSM::Time(USB_LATENCY_INTRVL)) { |
kurtis.heimerl | e380af3 | 2011-11-26 03:18:55 +0000 | [diff] [blame] | 1016 | mTransmitLatency = mTransmitLatency + GSM::Time(1,0); |
| 1017 | LOG(INFO) << "new latency: " << mTransmitLatency; |
| 1018 | mLatencyUpdateTime = radioClock->get(); |
| 1019 | } |
| 1020 | } |
| 1021 | else { |
| 1022 | // if underrun hasn't occurred in the last sec (216 frames) drop |
| 1023 | // transmit latency by a timeslot |
ttsou | 2173abf | 2012-08-08 00:51:31 +0000 | [diff] [blame] | 1024 | if (mTransmitLatency > GSM::Time(USB_LATENCY_MIN)) { |
kurtis.heimerl | e380af3 | 2011-11-26 03:18:55 +0000 | [diff] [blame] | 1025 | if (radioClock->get() > mLatencyUpdateTime + GSM::Time(216,0)) { |
| 1026 | mTransmitLatency.decTN(); |
| 1027 | LOG(INFO) << "reduced latency: " << mTransmitLatency; |
| 1028 | mLatencyUpdateTime = radioClock->get(); |
| 1029 | } |
| 1030 | } |
| 1031 | } |
dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 1032 | } |
dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 1033 | // time to push burst to transmit FIFO |
| 1034 | pushRadioVector(mTransmitDeadlineClock); |
| 1035 | mTransmitDeadlineClock.incTN(); |
| 1036 | } |
dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 1037 | } |
Thomas Tsou | 92c16df | 2013-09-28 18:04:19 -0400 | [diff] [blame] | 1038 | |
| 1039 | radioClock->wait(); |
dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 1040 | } |
| 1041 | |
| 1042 | |
| 1043 | |
| 1044 | void Transceiver::writeClockInterface() |
| 1045 | { |
| 1046 | char command[50]; |
| 1047 | // FIXME -- This should be adaptive. |
| 1048 | sprintf(command,"IND CLOCK %llu",(unsigned long long) (mTransmitDeadlineClock.FN()+2)); |
| 1049 | |
| 1050 | LOG(INFO) << "ClockInterface: sending " << command; |
| 1051 | |
Tom Tsou | eb54bdd | 2014-11-25 16:06:32 -0800 | [diff] [blame] | 1052 | mClockSocket.write(command, strlen(command) + 1); |
dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 1053 | |
| 1054 | mLastClockUpdateTime = mTransmitDeadlineClock; |
| 1055 | |
Thomas Tsou | 92c16df | 2013-09-28 18:04:19 -0400 | [diff] [blame] | 1056 | } |
dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 1057 | |
Thomas Tsou | 204a9f1 | 2013-10-29 18:34:16 -0400 | [diff] [blame] | 1058 | void *RxUpperLoopAdapter(TransceiverChannel *chan) |
| 1059 | { |
| 1060 | Transceiver *trx = chan->trx; |
| 1061 | size_t num = chan->num; |
| 1062 | |
| 1063 | delete chan; |
| 1064 | |
Thomas Tsou | 7553aa9 | 2013-11-08 12:50:03 -0500 | [diff] [blame] | 1065 | trx->setPriority(0.42); |
| 1066 | |
Thomas Tsou | 204a9f1 | 2013-10-29 18:34:16 -0400 | [diff] [blame] | 1067 | while (1) { |
| 1068 | trx->driveReceiveFIFO(num); |
| 1069 | pthread_testcancel(); |
| 1070 | } |
| 1071 | return NULL; |
| 1072 | } |
| 1073 | |
| 1074 | void *RxLowerLoopAdapter(Transceiver *transceiver) |
dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 1075 | { |
Thomas Tsou | 7553aa9 | 2013-11-08 12:50:03 -0500 | [diff] [blame] | 1076 | transceiver->setPriority(0.45); |
kurtis.heimerl | 6b495a5 | 2011-11-26 03:17:21 +0000 | [diff] [blame] | 1077 | |
dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 1078 | while (1) { |
Thomas Tsou | 204a9f1 | 2013-10-29 18:34:16 -0400 | [diff] [blame] | 1079 | transceiver->driveReceiveRadio(); |
Thomas Tsou | 92c16df | 2013-09-28 18:04:19 -0400 | [diff] [blame] | 1080 | pthread_testcancel(); |
| 1081 | } |
| 1082 | return NULL; |
| 1083 | } |
| 1084 | |
Thomas Tsou | 204a9f1 | 2013-10-29 18:34:16 -0400 | [diff] [blame] | 1085 | void *TxLowerLoopAdapter(Transceiver *transceiver) |
Thomas Tsou | 92c16df | 2013-09-28 18:04:19 -0400 | [diff] [blame] | 1086 | { |
Thomas Tsou | 7553aa9 | 2013-11-08 12:50:03 -0500 | [diff] [blame] | 1087 | transceiver->setPriority(0.44); |
| 1088 | |
Thomas Tsou | 92c16df | 2013-09-28 18:04:19 -0400 | [diff] [blame] | 1089 | while (1) { |
Thomas Tsou | 204a9f1 | 2013-10-29 18:34:16 -0400 | [diff] [blame] | 1090 | transceiver->driveTxFIFO(); |
dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 1091 | pthread_testcancel(); |
| 1092 | } |
| 1093 | return NULL; |
| 1094 | } |
| 1095 | |
Thomas Tsou | 204a9f1 | 2013-10-29 18:34:16 -0400 | [diff] [blame] | 1096 | void *ControlServiceLoopAdapter(TransceiverChannel *chan) |
dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 1097 | { |
Thomas Tsou | 204a9f1 | 2013-10-29 18:34:16 -0400 | [diff] [blame] | 1098 | Transceiver *trx = chan->trx; |
| 1099 | size_t num = chan->num; |
| 1100 | |
| 1101 | delete chan; |
| 1102 | |
dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 1103 | while (1) { |
Thomas Tsou | 204a9f1 | 2013-10-29 18:34:16 -0400 | [diff] [blame] | 1104 | trx->driveControl(num); |
dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 1105 | pthread_testcancel(); |
| 1106 | } |
| 1107 | return NULL; |
| 1108 | } |
| 1109 | |
Thomas Tsou | 204a9f1 | 2013-10-29 18:34:16 -0400 | [diff] [blame] | 1110 | void *TxUpperLoopAdapter(TransceiverChannel *chan) |
dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 1111 | { |
Thomas Tsou | 204a9f1 | 2013-10-29 18:34:16 -0400 | [diff] [blame] | 1112 | Transceiver *trx = chan->trx; |
| 1113 | size_t num = chan->num; |
| 1114 | |
| 1115 | delete chan; |
| 1116 | |
Thomas Tsou | a4cf48c | 2013-11-09 21:44:26 -0500 | [diff] [blame] | 1117 | trx->setPriority(0.40); |
| 1118 | |
dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 1119 | while (1) { |
Tom Tsou | eb54bdd | 2014-11-25 16:06:32 -0800 | [diff] [blame] | 1120 | trx->driveTxPriorityQueue(num); |
dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 1121 | pthread_testcancel(); |
| 1122 | } |
| 1123 | return NULL; |
| 1124 | } |