Merge "Wifi: Add definitions for bands frequency boundries" into rvc-dev am:... (f3e9bb68) · Commits · e / os / android_frameworks_base

wifi/java/android/net/wifi/ScanResult.java

+146 −14

Original line number	Diff line number	Diff line
		@@ -524,48 +524,180 @@ public final class ScanResult implements Parcelable {
		* {@hide}
		*/
		public final static int UNSPECIFIED = -1;

		/**
		* 2.4 GHz band first channel number
		* @hide
		*/
		public boolean is24GHz() {
		return ScanResult.is24GHz(frequency);
		public static final int BAND_24_GHZ_FIRST_CH_NUM = 1;
		/**
		* 2.4 GHz band last channel number
		* @hide
		*/
		public static final int BAND_24_GHZ_LAST_CH_NUM = 14;
		/**
		* 2.4 GHz band frequency of first channel in MHz
		* @hide
		*/
		public static final int BAND_24_GHZ_START_FREQ_MHZ = 2412;
		/**
		* 2.4 GHz band frequency of last channel in MHz
		* @hide
		*/
		public static final int BAND_24_GHZ_END_FREQ_MHZ = 2484;

		/**
		* 5 GHz band first channel number
		* @hide
		*/
		public static final int BAND_5_GHZ_FIRST_CH_NUM = 32;
		/**
		* 5 GHz band last channel number
		* @hide
		*/
		public static final int BAND_5_GHZ_LAST_CH_NUM = 173;
		/**
		* 5 GHz band frequency of first channel in MHz
		* @hide
		*/
		public static final int BAND_5_GHZ_START_FREQ_MHZ = 5160;
		/**
		* 5 GHz band frequency of last channel in MHz
		* @hide
		*/
		public static final int BAND_5_GHZ_END_FREQ_MHZ = 5865;

		/**
		* 6 GHz band first channel number
		* @hide
		*/
		public static final int BAND_6_GHZ_FIRST_CH_NUM = 1;
		/**
		* 6 GHz band last channel number
		* @hide
		*/
		public static final int BAND_6_GHZ_LAST_CH_NUM = 233;
		/**
		* 6 GHz band frequency of first channel in MHz
		* @hide
		*/
		public static final int BAND_6_GHZ_START_FREQ_MHZ = 5945;
		/**
		* 6 GHz band frequency of last channel in MHz
		* @hide
		*/
		public static final int BAND_6_GHZ_END_FREQ_MHZ = 7105;

		/**
		* Utility function to check if a frequency within 2.4 GHz band
		* @param freqMhz frequency in MHz
		* @return true if within 2.4GHz, false otherwise
		*
		* @hide
		*/
		public static boolean is24GHz(int freqMhz) {
		return freqMhz >= BAND_24_GHZ_START_FREQ_MHZ && freqMhz <= BAND_24_GHZ_END_FREQ_MHZ;
		}

		/**
		* Utility function to check if a frequency within 5 GHz band
		* @param freqMhz frequency in MHz
		* @return true if within 5GHz, false otherwise
		*
		* @hide
		* TODO: makes real freq boundaries
		*/
		public static boolean is24GHz(int freq) {
		return freq > 2400 && freq < 2500;
		public static boolean is5GHz(int freqMhz) {
		return freqMhz >= BAND_5_GHZ_START_FREQ_MHZ && freqMhz <= BAND_5_GHZ_END_FREQ_MHZ;
		}

		/**
		* Utility function to check if a frequency within 6 GHz band
		* @param freqMhz
		* @return true if within 6GHz, false otherwise
		*
		* @hide
		*/
		public boolean is5GHz() {
		return ScanResult.is5GHz(frequency);
		public static boolean is6GHz(int freqMhz) {
		return freqMhz >= BAND_6_GHZ_START_FREQ_MHZ && freqMhz <= BAND_6_GHZ_END_FREQ_MHZ;
		}

		/**
		* Utility function to convert channel number/band to frequency in MHz
		* @param channel number to convert
		* @param band of channel to convert
		* @return center frequency in Mhz of the channel, {@link UNSPECIFIED} if no match
		*
		* @hide
		*/
		public boolean is6GHz() {
		return ScanResult.is6GHz(frequency);
		public static int convertChannelToFrequencyMhz(int channel, @WifiScanner.WifiBand int band) {
		if (band == WifiScanner.WIFI_BAND_24_GHZ) {
		// Special case
		if (channel == 14) {
		return 2484;
		} else if (channel >= BAND_24_GHZ_FIRST_CH_NUM && channel <= BAND_24_GHZ_LAST_CH_NUM) {
		return ((channel - BAND_24_GHZ_FIRST_CH_NUM) * 5) + BAND_24_GHZ_START_FREQ_MHZ;
		} else {
		return UNSPECIFIED;
		}
		}
		if (band == WifiScanner.WIFI_BAND_5_GHZ) {
		if (channel >= BAND_5_GHZ_FIRST_CH_NUM && channel <= BAND_5_GHZ_LAST_CH_NUM) {
		return ((channel - BAND_5_GHZ_FIRST_CH_NUM) * 5) + BAND_5_GHZ_START_FREQ_MHZ;
		} else {
		return UNSPECIFIED;
		}
		}
		if (band == WifiScanner.WIFI_BAND_6_GHZ) {
		if (channel >= BAND_6_GHZ_FIRST_CH_NUM && channel <= BAND_6_GHZ_LAST_CH_NUM) {
		return ((channel - BAND_6_GHZ_FIRST_CH_NUM) * 5) + BAND_6_GHZ_START_FREQ_MHZ;
		} else {
		return UNSPECIFIED;
		}
		}
		return UNSPECIFIED;
		}

		/**
		* Utility function to convert frequency in MHz to channel number
		* @param freqMhz frequency in MHz
		* @return channel number associated with given frequency, {@link UNSPECIFIED} if no match
		*
		* @hide
		*/
		public static int convertFrequencyMhzToChannel(int freqMhz) {
		// Special case
		if (freqMhz == 2484) {
		return 14;
		} else if (is24GHz(freqMhz)) {
		return (freqMhz - BAND_24_GHZ_START_FREQ_MHZ) / 5 + BAND_24_GHZ_FIRST_CH_NUM;
		} else if (is5GHz(freqMhz)) {
		return ((freqMhz - BAND_5_GHZ_START_FREQ_MHZ) / 5) + BAND_5_GHZ_FIRST_CH_NUM;
		} else if (is6GHz(freqMhz)) {
		return ((freqMhz - BAND_6_GHZ_START_FREQ_MHZ) / 5) + BAND_6_GHZ_FIRST_CH_NUM;
		}

		return UNSPECIFIED;
		}

		/**
		* @hide
		* TODO: makes real freq boundaries
		*/
		public static boolean is5GHz(int freq) {
		return freq > 4900 && freq < 5900;
		public boolean is24GHz() {
		return ScanResult.is24GHz(frequency);
		}

		/**
		* @hide
		*/
		public static boolean is6GHz(int freq) {
		return freq > 5925 && freq < 7125;
		public boolean is5GHz() {
		return ScanResult.is5GHz(frequency);
		}

		/**
		* @hide
		*/
		public boolean is6GHz() {
		return ScanResult.is6GHz(frequency);
		}

		/**

wifi/tests/src/android/net/wifi/ScanResultTest.java

+81 −0

Original line number	Diff line number	Diff line
		@@ -45,6 +45,68 @@ public class ScanResultTest {
		public static final @WifiAnnotations.WifiStandard int TEST_WIFI_STANDARD =
		ScanResult.WIFI_STANDARD_11AC;

		/**
		* Frequency to channel map. This include some frequencies used outside the US.
		* Representing it using a vector (instead of map) for simplification.
		*/
		private static final int[] FREQUENCY_TO_CHANNEL_MAP = {
		2412, WifiScanner.WIFI_BAND_24_GHZ, 1,
		2417, WifiScanner.WIFI_BAND_24_GHZ, 2,
		2422, WifiScanner.WIFI_BAND_24_GHZ, 3,
		2427, WifiScanner.WIFI_BAND_24_GHZ, 4,
		2432, WifiScanner.WIFI_BAND_24_GHZ, 5,
		2437, WifiScanner.WIFI_BAND_24_GHZ, 6,
		2442, WifiScanner.WIFI_BAND_24_GHZ, 7,
		2447, WifiScanner.WIFI_BAND_24_GHZ, 8,
		2452, WifiScanner.WIFI_BAND_24_GHZ, 9,
		2457, WifiScanner.WIFI_BAND_24_GHZ, 10,
		2462, WifiScanner.WIFI_BAND_24_GHZ, 11,
		/* 12, 13 are only legitimate outside the US. */
		2467, WifiScanner.WIFI_BAND_24_GHZ, 12,
		2472, WifiScanner.WIFI_BAND_24_GHZ, 13,
		/* 14 is for Japan, DSSS and CCK only. */
		2484, WifiScanner.WIFI_BAND_24_GHZ, 14,
		/* 34 valid in Japan. */
		5170, WifiScanner.WIFI_BAND_5_GHZ, 34,
		5180, WifiScanner.WIFI_BAND_5_GHZ, 36,
		5190, WifiScanner.WIFI_BAND_5_GHZ, 38,
		5200, WifiScanner.WIFI_BAND_5_GHZ, 40,
		5210, WifiScanner.WIFI_BAND_5_GHZ, 42,
		5220, WifiScanner.WIFI_BAND_5_GHZ, 44,
		5230, WifiScanner.WIFI_BAND_5_GHZ, 46,
		5240, WifiScanner.WIFI_BAND_5_GHZ, 48,
		5260, WifiScanner.WIFI_BAND_5_GHZ, 52,
		5280, WifiScanner.WIFI_BAND_5_GHZ, 56,
		5300, WifiScanner.WIFI_BAND_5_GHZ, 60,
		5320, WifiScanner.WIFI_BAND_5_GHZ, 64,
		5500, WifiScanner.WIFI_BAND_5_GHZ, 100,
		5520, WifiScanner.WIFI_BAND_5_GHZ, 104,
		5540, WifiScanner.WIFI_BAND_5_GHZ, 108,
		5560, WifiScanner.WIFI_BAND_5_GHZ, 112,
		5580, WifiScanner.WIFI_BAND_5_GHZ, 116,
		/* 120, 124, 128 valid in Europe/Japan. */
		5600, WifiScanner.WIFI_BAND_5_GHZ, 120,
		5620, WifiScanner.WIFI_BAND_5_GHZ, 124,
		5640, WifiScanner.WIFI_BAND_5_GHZ, 128,
		/* 132+ valid in US. */
		5660, WifiScanner.WIFI_BAND_5_GHZ, 132,
		5680, WifiScanner.WIFI_BAND_5_GHZ, 136,
		5700, WifiScanner.WIFI_BAND_5_GHZ, 140,
		/* 144 is supported by a subset of WiFi chips. */
		5720, WifiScanner.WIFI_BAND_5_GHZ, 144,
		5745, WifiScanner.WIFI_BAND_5_GHZ, 149,
		5765, WifiScanner.WIFI_BAND_5_GHZ, 153,
		5785, WifiScanner.WIFI_BAND_5_GHZ, 157,
		5805, WifiScanner.WIFI_BAND_5_GHZ, 161,
		5825, WifiScanner.WIFI_BAND_5_GHZ, 165,
		5845, WifiScanner.WIFI_BAND_5_GHZ, 169,
		5865, WifiScanner.WIFI_BAND_5_GHZ, 173,
		/* Now some 6GHz channels */
		5945, WifiScanner.WIFI_BAND_6_GHZ, 1,
		5960, WifiScanner.WIFI_BAND_6_GHZ, 4,
		6100, WifiScanner.WIFI_BAND_6_GHZ, 32
		};

		/**
		* Setup before tests.
		*/
		@@ -183,6 +245,25 @@ public class ScanResultTest {
		+ "RadioChainInfo: id=1, level=-54]", scanResult.toString());
		}

		/**
		* verify frequency to channel conversion for all possible frequencies.
		*/
		@Test
		public void convertFrequencyToChannel() throws Exception {
		for (int i = 0; i < FREQUENCY_TO_CHANNEL_MAP.length; i += 3) {
		assertEquals(FREQUENCY_TO_CHANNEL_MAP[i + 2],
		ScanResult.convertFrequencyMhzToChannel(FREQUENCY_TO_CHANNEL_MAP[i]));
		}
		}

		/**
		* Verify frequency to channel conversion failed for an invalid frequency.
		*/
		@Test
		public void convertFrequencyToChannelWithInvalidFreq() throws Exception {
		assertEquals(-1, ScanResult.convertFrequencyMhzToChannel(8000));
		}

		/**
		* Write the provided {@link ScanResult} to a parcel and deserialize it.
		*/