package android.telephony; import static android.telephony.ServiceState.DUPLEX_MODE_FDD; import static android.telephony.ServiceState.DUPLEX_MODE_TDD; import static android.telephony.ServiceState.DUPLEX_MODE_UNKNOWN; import android.telephony.AccessNetworkConstants.EutranBand; import android.telephony.ServiceState.DuplexMode; /** * Utilities to map between radio constants. * * @hide */ public class AccessNetworkUtils { // do not instantiate private AccessNetworkUtils() {} public static final int INVALID_BAND = -1; /** * Gets the duplex mode for the given EUTRAN operating band. * *
See 3GPP 36.101 sec 5.5-1 for calculation * * @param band The EUTRAN band number * @return The duplex mode of the given EUTRAN band */ @DuplexMode public static int getDuplexModeForEutranBand(int band) { if (band == INVALID_BAND) { return DUPLEX_MODE_UNKNOWN; } if (band >= EutranBand.BAND_68) { return DUPLEX_MODE_UNKNOWN; } else if (band >= EutranBand.BAND_65) { return DUPLEX_MODE_FDD; } else if (band >= EutranBand.BAND_47) { return DUPLEX_MODE_UNKNOWN; } else if (band >= EutranBand.BAND_33) { return DUPLEX_MODE_TDD; } else if (band >= EutranBand.BAND_1) { return DUPLEX_MODE_FDD; } return DUPLEX_MODE_UNKNOWN; } /** * Gets the EUTRAN Operating band for a given downlink EARFCN. * *
See 3GPP 36.101 sec 5.7.3-1 for calculation. * * @param earfcn The downlink EARFCN * @return Operating band number, or {@link #INVALID_BAND} if no corresponding band exists */ public static int getOperatingBandForEarfcn(int earfcn) { if (earfcn > 67535) { return INVALID_BAND; } else if (earfcn >= 67366) { return INVALID_BAND; // band 67 only for CarrierAgg } else if (earfcn >= 66436) { return EutranBand.BAND_66; } else if (earfcn >= 65536) { return EutranBand.BAND_65; } else if (earfcn > 54339) { return INVALID_BAND; } else if (earfcn >= 46790 /* inferred from the end range of BAND_45 */) { return EutranBand.BAND_46; } else if (earfcn >= 46590) { return EutranBand.BAND_45; } else if (earfcn >= 45590) { return EutranBand.BAND_44; } else if (earfcn >= 43590) { return EutranBand.BAND_43; } else if (earfcn >= 41590) { return EutranBand.BAND_42; } else if (earfcn >= 39650) { return EutranBand.BAND_41; } else if (earfcn >= 38650) { return EutranBand.BAND_40; } else if (earfcn >= 38250) { return EutranBand.BAND_39; } else if (earfcn >= 37750) { return EutranBand.BAND_38; } else if (earfcn >= 37550) { return EutranBand.BAND_37; } else if (earfcn >= 36950) { return EutranBand.BAND_36; } else if (earfcn >= 36350) { return EutranBand.BAND_35; } else if (earfcn >= 36200) { return EutranBand.BAND_34; } else if (earfcn >= 36000) { return EutranBand.BAND_33; } else if (earfcn > 10359) { return INVALID_BAND; } else if (earfcn >= 9920) { return INVALID_BAND; // band 32 only for CarrierAgg } else if (earfcn >= 9870) { return EutranBand.BAND_31; } else if (earfcn >= 9770) { return EutranBand.BAND_30; } else if (earfcn >= 9660) { return INVALID_BAND; // band 29 only for CarrierAgg } else if (earfcn >= 9210) { return EutranBand.BAND_28; } else if (earfcn >= 9040) { return EutranBand.BAND_27; } else if (earfcn >= 8690) { return EutranBand.BAND_26; } else if (earfcn >= 8040) { return EutranBand.BAND_25; } else if (earfcn >= 7700) { return EutranBand.BAND_24; } else if (earfcn >= 7500) { return EutranBand.BAND_23; } else if (earfcn >= 6600) { return EutranBand.BAND_22; } else if (earfcn >= 6450) { return EutranBand.BAND_21; } else if (earfcn >= 6150) { return EutranBand.BAND_20; } else if (earfcn >= 6000) { return EutranBand.BAND_19; } else if (earfcn >= 5850) { return EutranBand.BAND_18; } else if (earfcn >= 5730) { return EutranBand.BAND_17; } else if (earfcn > 5379) { return INVALID_BAND; } else if (earfcn >= 5280) { return EutranBand.BAND_14; } else if (earfcn >= 5180) { return EutranBand.BAND_13; } else if (earfcn >= 5010) { return EutranBand.BAND_12; } else if (earfcn >= 4750) { return EutranBand.BAND_11; } else if (earfcn >= 4150) { return EutranBand.BAND_10; } else if (earfcn >= 3800) { return EutranBand.BAND_9; } else if (earfcn >= 3450) { return EutranBand.BAND_8; } else if (earfcn >= 2750) { return EutranBand.BAND_7; } else if (earfcn >= 2650) { return EutranBand.BAND_6; } else if (earfcn >= 2400) { return EutranBand.BAND_5; } else if (earfcn >= 1950) { return EutranBand.BAND_4; } else if (earfcn >= 1200) { return EutranBand.BAND_3; } else if (earfcn >= 600) { return EutranBand.BAND_2; } else if (earfcn >= 0) { return EutranBand.BAND_1; } return INVALID_BAND; } }