Gsm Laboratory Info

def real_gsm_scan(): """Real GSM scan using RTL-SDR (placeholder for gr-gsm integration)""" if not SDR_AVAILABLE: return simulate_gsm_scan()

# Show results display_results(scan_results) gsm laboratory

def simulate_gsm_scan(): """Simulate GSM scanning for lab use when no SDR is available""" print("\n[LAB SIMULATION] Scanning GSM bands...") results = [] fake_bsic = [12, 23, 34, 45, 56] for band, info in GSM_BANDS.items(): for i in range(3): # simulate 3 channels per band arfcn = info['arfcn_range'][0] + i * 30 freq = arfcn_to_freq(arfcn, band) if freq: results.append({ 'timestamp': datetime.now().isoformat(), 'band': band, 'arfcn': arfcn, 'freq_mhz': round(freq, 3), 'bsic': fake_bsic[i % len(fake_bsic)], 'rssi_dbm': -70 + (i * 3) # simulated RSSI }) return results 56] for band

# Perform scan scan_results = real_gsm_scan() 'bsic': fake_bsic[i % len(fake_bsic)]

# Save for further lab analysis save_log(scan_results)

def arfcn_to_freq(arfcn, band): """Convert ARFCN to downlink frequency in MHz""" if band == 'GSM850': return 869 + 0.2 * (arfcn - 128) elif band == 'EGSM900': if arfcn <= 124: return 925 + 0.2 * arfcn else: return 935.2 + 0.2 * (arfcn - 124) elif band == 'DCS1800': return 1805 + 0.2 * (arfcn - 512) elif band == 'PCS1900': return 1930 + 0.2 * (arfcn - 512) else: return None

def display_results(results): """Pretty print GSM scan results""" print("\n" + "="*80) print("GSM LABORATORY SCAN RESULTS") print("="*80) print(f"{'Band':<12} {'ARFCN':<8} {'Freq (MHz)':<12} {'BSIC':<6} {'RSSI (dBm)':<10}") print("-"*80) for r in results: print(f"{r['band']:<12} {r['arfcn']:<8} {r['freq_mhz']:<12} {r['bsic']:<6} {r['rssi_dbm']:<10}") print("="*80)