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Merge "Wifi: Add definitions for bands frequency boundries" into rvc-dev

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This commit is contained in:
Ahmed ElArabawy
2020-05-12 01:10:10 +00:00
committed by Android (Google) Code Review
parent 0728a4fe50 f7ccda0564
commit fe86e6d468
2 changed files with 236 additions and 23 deletions
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178
wifi/java/android/net/wifi/ScanResult.java
View File

@@ -524,6 +524,161 @@ public final class ScanResult implements Parcelable {
* {@hide}
*/
public final static int UNSPECIFIED = -1;
/**
* 2.4 GHz band first channel number
* @hide
*/
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
*/
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 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 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
*/
@@ -531,14 +686,6 @@ public final class ScanResult implements Parcelable {
return ScanResult.is24GHz(frequency);
}
/**
* @hide
* TODO: makes real freq boundaries
*/
public static boolean is24GHz(int freq) {
return freq > 2400 && freq < 2500;
}
/**
* @hide
*/
@@ -553,21 +700,6 @@ public final class ScanResult implements Parcelable {
return ScanResult.is6GHz(frequency);
}
/**
* @hide
* TODO: makes real freq boundaries
*/
public static boolean is5GHz(int freq) {
return freq > 4900 && freq < 5900;
}
/**
* @hide
*/
public static boolean is6GHz(int freq) {
return freq > 5925 && freq < 7125;
}
/**
* @hide
* anqp lines from supplicant BSS response

81
wifi/tests/src/android/net/wifi/ScanResultTest.java
View File

@@ -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.
*/