Chg: update image tag in helm values to v2.7.0-RC3

Co-authored-by: Jun Woo Shin <jwoos@users.noreply.github.com>

helm/values.yaml

@@ -9,7 +9,7 @@ fullnameOverride: ""
 images:
   owrrm:
     repository: tip-tip-wlan-cloud-ucentral.jfrog.io/owrrm
-    tag: main
+    tag: v2.7.0-RC3
     pullPolicy: Always
 #    regcred:
 #      registry: tip-tip-wlan-cloud-ucentral.jfrog.io

src/main/java/com/facebook/openwifirrm/modules/Modeler.java

@@ -97,7 +97,7 @@ public class Modeler implements Runnable {
 		public Map<String, State> latestState = new ConcurrentHashMap<>();
 
 		/** List of radio info per device. */
-		public Map<String, JsonArray> latestDeviceStatus =
+		public Map<String, JsonArray> latestDeviceStatusRadios =
 			new ConcurrentHashMap<>();
 
 		/** List of capabilities per device. */
@@ -379,7 +379,7 @@ public class Modeler implements Runnable {
 		// Get old vs new radios info and store the new radios info
 		JsonArray newRadioList = config.getRadioConfigList();
 		Set<String> newRadioBandsSet = config.getRadioBandsSet(newRadioList);
-		JsonArray oldRadioList = dataModel.latestDeviceStatus
+		JsonArray oldRadioList = dataModel.latestDeviceStatusRadios
 			.put(serialNumber, newRadioList);
 		Set<String> oldRadioBandsSet = config.getRadioBandsSet(oldRadioList);
 
@@ -429,7 +429,7 @@ public class Modeler implements Runnable {
 			logger.debug("Removed some state entries from data model");
 		}
 		if (
-			dataModel.latestDeviceStatus.entrySet()
+			dataModel.latestDeviceStatusRadios.entrySet()
 				.removeIf(e -> !isRRMEnabled(e.getKey()))
 		) {
 			logger.debug("Removed some status entries from data model");

src/main/java/com/facebook/openwifirrm/mysql/DatabaseManager.java

@@ -454,9 +454,10 @@ public class DatabaseManager {
 			.map(o -> gson.fromJson(o, State.Interface.class))
 			.collect(Collectors.toList())
 			.toArray(new State.Interface[0]);
-		state.radios = new JsonObject[radios.lastKey() + 1];
+		state.radios = new State.Radio[radios.lastKey() + 1];
 		for (Map.Entry<Integer, JsonObject> entry : radios.entrySet()) {
-			state.radios[entry.getKey()] = entry.getValue();
+			State.Radio radio = new State.Radio();
+			state.radios[entry.getKey()] = radio;
 		}
 		return state;
 	}

src/main/java/com/facebook/openwifirrm/optimizers/channel/ChannelOptimizer.java

@@ -156,7 +156,7 @@ public abstract class ChannelOptimizer {
 			.removeIf(serialNumber -> !deviceConfigs.containsKey(serialNumber));
 		this.model.latestState.keySet()
 			.removeIf(serialNumber -> !deviceConfigs.containsKey(serialNumber));
-		this.model.latestDeviceStatus.keySet()
+		this.model.latestDeviceStatusRadios.keySet()
 			.removeIf(serialNumber -> !deviceConfigs.containsKey(serialNumber));
 		this.model.latestDeviceCapabilities.keySet()
 			.removeIf(serialNumber -> !deviceConfigs.containsKey(serialNumber));
@@ -234,8 +234,9 @@ public abstract class ChannelOptimizer {
 				// the difference of 8 means it is consecutive
 				int channelDiff =
 					Math.abs(vhtOperObj.channel1 - vhtOperObj.channel2);
-				// the "8080" below does not mean 8080 MHz wide, it refers to 80+80 MHz channel
+				// TODO it will currently return just 80 for 80p80 - it should be dealt
-				return channelDiff == 8 ? 160 : 8080;
+				// with properly.
+				return channelDiff == 8 ? 160 : 80;
 			} else {
 				return MIN_CHANNEL_WIDTH;
 			}
@@ -378,15 +379,26 @@ public abstract class ChannelOptimizer {
 			radioIndex < state.radios.length;
 			radioIndex++
 		) {
-			int tempChannel = state.radios[radioIndex]
+			int tempChannel = state.radios[radioIndex].channel;
-				.get("channel")
-				.getAsInt();
 			if (UCentralUtils.isChannelInBand(tempChannel, band)) {
 				currentChannel = tempChannel;
-				currentChannelWidth = state.radios[radioIndex]
+				// treat as two separate 80MHz channel and only assign to one
-					.get("channel_width")
+				// TODO: support 80p80 properly
-					.getAsInt();
+				Integer parsedChannelWidth = UCentralUtils
-				break;
+					.parseChannelWidth(
+						state.radios[radioIndex].channel_width,
+						true
+					);
+				if (parsedChannelWidth != null) {
+					currentChannelWidth = parsedChannelWidth;
+					break;
+				}
+
+				logger.error(
+					"Invalid channel width {}",
+					state.radios[radioIndex].channel_width
+				);
+				continue;
 			}
 		}
 		return new int[] { currentChannel, currentChannelWidth };

src/main/java/com/facebook/openwifirrm/optimizers/channel/LeastUsedChannelOptimizer.java

@@ -331,11 +331,11 @@ public class LeastUsedChannelOptimizer extends ChannelOptimizer {
 	public Map<String, Map<String, Integer>> computeChannelMap() {
 		Map<String, Map<String, Integer>> channelMap = new TreeMap<>();
 		Map<String, List<String>> bandsMap = UCentralUtils
-			.getBandsMap(model.latestDeviceStatus);
+			.getBandsMap(model.latestDeviceStatusRadios);
 
 		Map<String, Map<String, List<Integer>>> deviceAvailableChannels =
 			UCentralUtils.getDeviceAvailableChannels(
-				model.latestDeviceStatus,
+				model.latestDeviceStatusRadios,
 				model.latestDeviceCapabilities,
 				AVAILABLE_CHANNELS_BAND
 			);

src/main/java/com/facebook/openwifirrm/optimizers/channel/RandomChannelInitializer.java

@@ -119,11 +119,11 @@ public class RandomChannelInitializer extends ChannelOptimizer {
 	public Map<String, Map<String, Integer>> computeChannelMap() {
 		Map<String, Map<String, Integer>> channelMap = new TreeMap<>();
 		Map<String, List<String>> bandsMap =
-			UCentralUtils.getBandsMap(model.latestDeviceStatus);
+			UCentralUtils.getBandsMap(model.latestDeviceStatusRadios);
 
 		Map<String, Map<String, List<Integer>>> deviceAvailableChannels =
 			UCentralUtils.getDeviceAvailableChannels(
-				model.latestDeviceStatus,
+				model.latestDeviceStatusRadios,
 				model.latestDeviceCapabilities,
 				AVAILABLE_CHANNELS_BAND
 			);

src/main/java/com/facebook/openwifirrm/optimizers/tpc/MeasurementBasedApApTPC.java

@@ -14,7 +14,6 @@ import java.util.HashMap;
 import java.util.HashSet;
 import java.util.List;
 import java.util.Map;
-import java.util.Optional;
 import java.util.Set;
 import java.util.TreeMap;
 
@@ -26,9 +25,6 @@ import com.facebook.openwifirrm.modules.Modeler.DataModel;
 import com.facebook.openwifirrm.ucentral.UCentralUtils;
 import com.facebook.openwifirrm.ucentral.WifiScanEntry;
 import com.facebook.openwifirrm.ucentral.models.State;
-import com.google.gson.JsonArray;
-import com.google.gson.JsonElement;
-import com.google.gson.JsonObject;
 
 /**
  * Measurement-based AP-AP TPC algorithm.
@@ -178,32 +174,6 @@ public class MeasurementBasedApApTPC extends TPC {
 		return managedBSSIDs;
 	}
 
-	/**
-	 * Get the current band radio tx power (the first one found) for an AP using
-	 * the latest device status.
-	 *
-	 * @param latestDeviceStatus JsonArray containing radio config for the AP
-	 * @param band band (e.g., "2G")
-	 * @return an Optional containing the tx power if one exists, or else an
-	 *         empty Optional
-	 */
-	protected static Optional<Integer> getCurrentTxPower(
-		JsonArray latestDeviceStatus,
-		String band
-	) {
-		for (JsonElement e : latestDeviceStatus) {
-			if (!e.isJsonObject()) {
-				continue;
-			}
-			JsonObject radioObject = e.getAsJsonObject();
-			String radioBand = radioObject.get("band").getAsString();
-			if (radioBand.equals(band) && radioObject.has("tx-power")) {
-				return Optional.of(radioObject.get("tx-power").getAsInt());
-			}
-		}
-		return Optional.empty();
-	}
-
 	/**
 	 * Get a map from BSSID to the received signal strength at neighboring APs (RSSI).
 	 * List of RSSIs are returned in sorted, ascending order.
@@ -340,7 +310,6 @@ public class MeasurementBasedApApTPC extends TPC {
 		Map<String, List<Integer>> bssidToRssiValues =
 			buildRssiMap(managedBSSIDs, model.latestWifiScans, band);
 		logger.debug("Starting TPC for the {} band", band);
-		Map<String, JsonArray> allStatuses = model.latestDeviceStatus;
 		for (String serialNumber : serialNumbers) {
 			State state = model.latestState.get(serialNumber);
 			if (
@@ -370,40 +339,68 @@ public class MeasurementBasedApApTPC extends TPC {
 				);
 				continue;
 			}
-			JsonArray radioStatuses =
+
-				allStatuses.get(serialNumber).getAsJsonArray();
+			// An AP can have multiple interfaces, optimize for all of them
-			Optional<Integer> possibleCurrentTxPower = getCurrentTxPower(
+			for (State.Interface iface : state.interfaces) {
-				radioStatuses,
+				if (iface.ssids == null) {
-				band
+					continue;
-			);
+				}
-			if (possibleCurrentTxPower.isEmpty()) {
+
-				// this AP is not on the band of interest
+				for (State.Interface.SSID ssid : iface.ssids) {
-				continue;
+					Integer idx = UCentralUtils.parseReferenceIndex(
+						ssid.radio.get("$ref").getAsString()
+					);
+					if (idx == null) {
+						logger.error(
+							"Unable to get radio for {}, invalid radio ref {}",
+							serialNumber,
+							ssid.radio.get("$ref").getAsString()
+						);
+						continue;
+					}
+					State.Radio radio = state.radios[idx];
+
+					// this specific SSID is not on the band of interest
+					if (
+						!UCentralUtils.isChannelInBand(radio.channel, band)
+					) {
+						continue;
+					}
+
+					int currentTxPower = radio.tx_power;
+					String bssid = ssid.bssid;
+					List<Integer> rssiValues = bssidToRssiValues.get(bssid);
+					logger
+						.debug(
+							"Device <{}> : Interface <{}> : Channel <{}> : BSSID <{}>",
+							serialNumber,
+							iface.name,
+							channel,
+							bssid
+						);
+					for (int rssi : rssiValues) {
+						logger.debug("  Neighbor received RSSI: {}", rssi);
+					}
+					List<Integer> txPowerChoices = updateTxPowerChoices(
+						band,
+						serialNumber,
+						DEFAULT_TX_POWER_CHOICES
+					);
+					int newTxPower = computeTxPower(
+						serialNumber,
+						currentTxPower,
+						rssiValues,
+						coverageThreshold,
+						nthSmallestRssi,
+						txPowerChoices
+					);
+					logger.debug("  Old tx_power: {}", currentTxPower);
+					logger.debug("  New tx_power: {}", newTxPower);
+					txPowerMap
+						.computeIfAbsent(serialNumber, k -> new TreeMap<>())
+						.put(band, newTxPower);
+				}
 			}
-			int currentTxPower = possibleCurrentTxPower.get();
-			String bssid = state.interfaces[0].ssids[0].bssid;
-			List<Integer> rssiValues = bssidToRssiValues.get(bssid);
-			logger.debug("Device <{}> : BSSID <{}>", serialNumber, bssid);
-			for (int rssi : rssiValues) {
-				logger.debug("  Neighbor received RSSI: {}", rssi);
-			}
-			List<Integer> txPowerChoices = updateTxPowerChoices(
-				band,
-				serialNumber,
-				DEFAULT_TX_POWER_CHOICES
-			);
-			int newTxPower = computeTxPower(
-				serialNumber,
-				currentTxPower,
-				rssiValues,
-				coverageThreshold,
-				nthSmallestRssi,
-				txPowerChoices
-			);
-			logger.debug("  Old tx_power: {}", currentTxPower);
-			logger.debug("  New tx_power: {}", newTxPower);
-			txPowerMap.computeIfAbsent(serialNumber, k -> new TreeMap<>())
-				.put(band, newTxPower);
 		}
 	}
 

src/main/java/com/facebook/openwifirrm/optimizers/tpc/MeasurementBasedApClientTPC.java

@@ -22,7 +22,6 @@ import org.slf4j.LoggerFactory;
 import com.facebook.openwifirrm.DeviceDataManager;
 import com.facebook.openwifirrm.modules.Modeler.DataModel;
 import com.facebook.openwifirrm.ucentral.models.State;
-import com.google.gson.JsonObject;
 
 /**
  * Measurement-based AP-client algorithm.
@@ -42,6 +41,9 @@ public class MeasurementBasedApClientTPC extends TPC {
 	/** Default tx power. */
 	public static final int DEFAULT_TX_POWER = 10;
 
+	/** Default channel width in HMz */
+	public static final int DEFAULT_CHANNEL_WIDTH = 20;
+
 	/** Mapping of MCS index to required SNR (dB) in 802.11ac. */
 	private static final List<Double> MCS_TO_SNR = Collections.unmodifiableList(
 		Arrays.asList(
@@ -154,19 +156,16 @@ public class MeasurementBasedApClientTPC extends TPC {
 	private int computeTxPowerForRadio(
 		String serialNumber,
 		State state,
-		JsonObject radio,
+		State.Radio radio,
 		List<Integer> txPowerChoices
 	) {
 		// Find current tx power and bandwidth
-		int currentTxPower =
+		int currentTxPower = radio.tx_power;
-			radio.has("tx_power") && !radio.get("tx_power").isJsonNull()
+		// treat as one 160MHz channel vs two 80MHz channels
-				? radio.get("tx_power").getAsInt()
+		Integer channelWidthMHz =
-				: 0;
+			UCentralUtils.parseChannelWidth(radio.channel_width, false);
-		int channelWidth =
+		int channelWidth = (channelWidthMHz != null
-			1_000_000 /* convert MHz to Hz */ * (radio.has("channel_width") &&
+			? channelWidthMHz : DEFAULT_CHANNEL_WIDTH) * 1_000_000; // convert MHz to HZ
-				!radio.get("channel_width").isJsonNull()
-					? radio.get("channel_width").getAsInt()
-					: 20);
 		Collections.sort(txPowerChoices);
 		int minTxPower = txPowerChoices.get(0);
 		int maxTxPower = txPowerChoices.get(txPowerChoices.size() - 1);
@@ -303,17 +302,10 @@ public class MeasurementBasedApClientTPC extends TPC {
 				);
 				continue;
 			}
+
 			Map<String, Integer> radioMap = new TreeMap<>();
-
+			for (State.Radio radio : state.radios) {
-			for (JsonObject radio : state.radios) {
+				int currentChannel = radio.channel;
-				Integer currentChannel =
-					radio.has("channel") && !radio.get("channel").isJsonNull()
-						? radio.get("channel").getAsInt()
-						: null;
-				if (currentChannel == null) {
-					continue;
-				}
-
 				String band = UCentralUtils.getBandFromChannel(currentChannel);
 				if (band == null) {
 					continue;

src/main/java/com/facebook/openwifirrm/optimizers/tpc/TPC.java

@@ -24,7 +24,6 @@ import com.facebook.openwifirrm.DeviceDataManager;
 import com.facebook.openwifirrm.modules.ConfigManager;
 import com.facebook.openwifirrm.modules.Modeler.DataModel;
 import com.facebook.openwifirrm.ucentral.models.State;
-import com.google.gson.JsonObject;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
@@ -75,7 +74,7 @@ public abstract class TPC {
 		this.model.latestState.keySet()
 			.removeIf(serialNumber -> !deviceConfigs.containsKey(serialNumber)
 			);
-		this.model.latestDeviceStatus.keySet()
+		this.model.latestDeviceStatusRadios.keySet()
 			.removeIf(serialNumber -> !deviceConfigs.containsKey(serialNumber)
 			);
 		this.model.latestDeviceCapabilities.keySet()
@@ -203,12 +202,9 @@ public abstract class TPC {
 				continue;
 			}
 
-			for (JsonObject radio : state.radios) {
+			for (State.Radio radio : state.radios) {
-				Integer currentChannel =
+				Integer currentChannel = radio.channel;
-					radio.has("channel") && !radio.get("channel").isJsonNull()
+				if (currentChannel == 0) {
-						? radio.get("channel").getAsInt()
-						: null;
-				if (currentChannel == null) {
 					continue;
 				}
 				apsPerChannel

src/main/java/com/facebook/openwifirrm/ucentral/UCentralUtils.java

@@ -130,9 +130,24 @@ public class UCentralUtils {
 				continue;
 			}
 
-			// Compare vs. existing value
+			// Compare vs. existing value.
-			int currentValue = radioConfig.get(fieldName).getAsInt();
+			// not all values are int so override those values
-			if (currentValue == newValue) {
+			Integer currentValue = null;
+			JsonElement fieldValue = radioConfig.get(fieldName);
+			if (
+				fieldValue.isJsonPrimitive() &&
+					fieldValue.getAsJsonPrimitive().isNumber()
+			) {
+				currentValue = fieldValue.getAsInt();
+			} else {
+				logger.debug(
+					"Unable to get field '{}' as int, value was {}",
+					fieldName,
+					fieldValue.toString()
+				);
+			}
+
+			if (currentValue != null && currentValue == newValue) {
 				logger.info(
 					"Device {}: {} {} is already {}",
 					serialNumber,
@@ -150,7 +165,7 @@ public class UCentralUtils {
 					operationalBand,
 					fieldName,
 					newValue,
-					currentValue
+					currentValue != null ? currentValue : fieldValue.toString()
 				);
 				wasModified = true;
 			}
@@ -384,4 +399,52 @@ public class UCentralUtils {
 		}
 		return null;
 	}
+
+	/**
+	 * Tries to parse channel width, if it encounters an error it will return null.
+	 * It can handle 80p80 in two ways. First it can just treat it as 160. Second,
+	 * it can just apply to the first 80 channel and ignore the second. This is
+	 * controlled by treatSeparate.
+	 *
+	 * @param channelWidthStr the channel width
+	 * @param treatSeparate treats each band separately
+	 * @return channel width in MHz
+	 */
+	public static Integer parseChannelWidth(
+		String channelWidthStr,
+		boolean treatSeparate
+	) {
+		// 80p80 is the only case where it can't be parsed into an integer
+		if (channelWidthStr.equals("80p80")) {
+			return treatSeparate ? 80 : 160;
+		}
+		try {
+			return Integer.parseInt(channelWidthStr);
+		} catch (NumberFormatException e) {
+			return null;
+		}
+	}
+
+	/**
+	 * Tries to parse the index from the reference string in the JSON returned from
+	 * other services. Note that this only returns the index, the caller is
+	 * responsible for making sure that the correct field is passed in and the
+	 * index is used in the correct fields. If there's an error parsing, it will
+	 * return null.
+	 *
+	 * @param reference The reference string, keyed under "$ref"
+	 * @return the index of the reference or null if an error occurred.
+	 */
+	public static Integer parseReferenceIndex(String reference) {
+		try {
+			return Integer.parseInt(
+				reference,
+				reference.lastIndexOf("/") + 1,
+				reference.length(),
+				10
+			);
+		} catch (NumberFormatException e) {
+			return null;
+		}
+	}
 }

src/main/java/com/facebook/openwifirrm/ucentral/models/State.java

@@ -112,8 +112,21 @@ public class State {
 
 	public Unit unit;
 
+	public static class Radio {
+		public long active_ms;
+		public long busy_ms;
+		public int channel;
+		public String channel_width;
+		public long noise;
+		public String phy;
+		public long receive_ms;
+		public long transmit_ms;
+		public int tx_power;
+	}
+
+	public Radio[] radios;
+
 	// TODO
-	public JsonObject[] radios;
 	@SerializedName("link-state") public JsonObject linkState;
 	public JsonObject gps;
 	public JsonObject poe;

src/main/java/com/facebook/openwifirrm/ucentral/operationelement/VHTOperationElement.java

@@ -30,15 +30,23 @@ public class VHTOperationElement {
 	 * 160 MHz wide channel, this parameter is the channel number of the 80MHz
 	 * channel that contains the primary channel. For a 80+80 MHz wide channel, this
 	 * parameter is the channel number of the primary channel.
+	 * <p>
+	 * This field is an unsigned byte in the specification (i.e., with values
+	 * between 0 and 255). But because Java only supports signed bytes, a short
+	 * data type is used to store the value.
 	 */
-	public final byte channel1;
+	public final short channel1;
 	/**
 	 * This should be zero unless the channel is 160MHz or 80+80 MHz wide. If the
 	 * channel is 160 MHz wide, this parameter is the channel number of the 160 MHz
 	 * wide channel. If the channel is 80+80 MHz wide, this parameter is the channel
 	 * index of the secondary 80 MHz wide channel.
+	 * <p>
+	 * This field is an unsigned byte in the specification (i.e., with values
+	 * between 0 and 255). But because Java only supports signed bytes, a short
+	 * data type is used to store the value.
 	 */
-	public final byte channel2;
+	public final short channel2;
 	/**
 	 * An 8-element array where each element is between 0 and 4 inclusive. MCS means
 	 * Modulation and Coding Scheme. NSS means Number of Spatial Streams. There can
@@ -60,8 +68,8 @@ public class VHTOperationElement {
 	public VHTOperationElement(String vhtOper) {
 		byte[] bytes = Base64.decodeBase64(vhtOper);
 		this.channelWidth = bytes[0];
-		this.channel1 = bytes[1];
+		this.channel1 = (short) (bytes[1] & 0xff); // read as unsigned value
-		this.channel2 = bytes[2];
+		this.channel2 = (short) (bytes[2] & 0xff); // read as unsigned value
 		byte[] vhtMcsForNss = new byte[8];
 		vhtMcsForNss[0] = (byte) (bytes[3] >>> 6);
 		vhtMcsForNss[1] = (byte) ((bytes[3] & 0b00110000) >>> 4);
@@ -83,8 +91,8 @@ public class VHTOperationElement {
 	 */
 	public VHTOperationElement(
 		byte channelWidth,
-		byte channel1,
+		short channel1,
-		byte channel2,
+		short channel2,
 		byte[] vhtMcsForNss
 	) {
 		/*

src/test/java/com/facebook/openwifirrm/optimizers/TestUtils.java

@@ -397,23 +397,15 @@ public class TestUtils {
 	}
 
 	/** Create an element of {@link State#radios}. */
-	private static JsonObject createStateRadio() {
+	private static State.Radio createStateRadio() {
-		// @formatter:off
+		State.Radio radio = new State.Radio();
-		return gson.fromJson(
+		radio.active_ms = 564328;
-			String.format(
+		radio.busy_ms = 36998;
-				"    {\n" +
+		radio.noise = 4294967193L;
-				"      \"active_ms\": 564328,\n" +
+		radio.phy = "platform/soc/c000000.wifi";
-				"      \"busy_ms\": 36998,\n" +
+		radio.receive_ms = 28;
-				"      \"noise\": 4294967193,\n" +
+		radio.transmit_ms = 4893;
-				"      \"phy\": \"platform/soc/c000000.wifi\",\n" +
+		return radio;
-				"      \"receive_ms\": 28,\n" +
-				"      \"temperature\": 45,\n" +
-				"      \"transmit_ms\": 4893\n" +
-				"    }\n"
-			),
-			JsonObject.class
-		);
-		// @formatter:on
 	}
 
 	/** Create a {@code State.Unit}. */
@@ -477,12 +469,12 @@ public class TestUtils {
 			state.interfaces[index] = createUpStateInterface(index);
 		}
 		state.interfaces[numRadios] = createDownStateInterface(numRadios);
-		state.radios = new JsonObject[numRadios];
+		state.radios = new State.Radio[numRadios];
 		for (int i = 0; i < numRadios; i++) {
 			state.radios[i] = createStateRadio();
-			state.radios[i].addProperty("channel", channels[i]);
+			state.radios[i].channel = channels[i];
-			state.radios[i].addProperty("channel_width", channelWidths[i]);
+			state.radios[i].channel_width = Integer.toString(channelWidths[i]);
-			state.radios[i].addProperty("tx_power", txPowers[i]);
+			state.radios[i].tx_power = txPowers[i];
 			state.interfaces[i].ssids[0].bssid = bssids[i];
 			state.interfaces[i].ssids[0].associations =
 				new State.Interface.SSID.Association[clientRssis[i].length];

src/test/java/com/facebook/openwifirrm/optimizers/channel/LeastUsedChannelOptimizerTest.java

@@ -51,7 +51,7 @@ public class LeastUsedChannelOptimizerTest {
 
 		// A -> No APs on current channel, so stay on it (48)
 		int aExpectedChannel = 48;
-		dataModel.latestDeviceStatus.put(
+		dataModel.latestDeviceStatusRadios.put(
 			deviceA,
 			TestUtils.createDeviceStatus(band, aExpectedChannel)
 		);
@@ -73,7 +73,7 @@ public class LeastUsedChannelOptimizerTest {
 		LinkedList<Integer> channelsB = new LinkedList<>();
 		channelsB.addAll(ChannelOptimizer.AVAILABLE_CHANNELS_BAND.get(band));
 		int bExpectedChannel = channelsB.removeLast();
-		dataModel.latestDeviceStatus.put(
+		dataModel.latestDeviceStatusRadios.put(
 			deviceB,
 			TestUtils.createDeviceStatus(band, 40)
 		);
@@ -94,7 +94,7 @@ public class LeastUsedChannelOptimizerTest {
 		channelsC.addAll(ChannelOptimizer.AVAILABLE_CHANNELS_BAND.get(band));
 		channelsC.addAll(ChannelOptimizer.AVAILABLE_CHANNELS_BAND.get(band));
 		int cExpectedChannel = channelsC.removeFirst();
-		dataModel.latestDeviceStatus.put(
+		dataModel.latestDeviceStatusRadios.put(
 			deviceC,
 			TestUtils.createDeviceStatus(band, 149)
 		);
@@ -138,7 +138,7 @@ public class LeastUsedChannelOptimizerTest {
 
 		// A -> No APs on current channel, so stay on it (1)
 		int aExpectedChannel = 1;
-		dataModel.latestDeviceStatus.put(
+		dataModel.latestDeviceStatusRadios.put(
 			deviceA,
 			TestUtils.createDeviceStatus(band, aExpectedChannel)
 		);
@@ -160,7 +160,7 @@ public class LeastUsedChannelOptimizerTest {
 		LinkedList<Integer> channelsB = new LinkedList<>();
 		channelsB.addAll(ChannelOptimizer.AVAILABLE_CHANNELS_BAND.get(band));
 		int bExpectedChannel = channelsB.removeLast();
-		dataModel.latestDeviceStatus.put(
+		dataModel.latestDeviceStatusRadios.put(
 			deviceB,
 			TestUtils.createDeviceStatus(band, 6)
 		);
@@ -178,7 +178,7 @@ public class LeastUsedChannelOptimizerTest {
 
 		// C -> Assigned to only free prioritized channel (1)
 		int cExpectedChannel = 1;
-		dataModel.latestDeviceStatus.put(
+		dataModel.latestDeviceStatusRadios.put(
 			deviceC,
 			TestUtils.createDeviceStatus(band, 6)
 		);
@@ -231,7 +231,7 @@ public class LeastUsedChannelOptimizerTest {
 
 		// A, B, C should just be assigned to the same userChannel
 		int aExpectedChannel = 48;
-		dataModel.latestDeviceStatus.put(
+		dataModel.latestDeviceStatusRadios.put(
 			deviceA,
 			TestUtils.createDeviceStatus(band, aExpectedChannel)
 		);
@@ -252,7 +252,7 @@ public class LeastUsedChannelOptimizerTest {
 		LinkedList<Integer> channelsB = new LinkedList<>();
 		channelsB.addAll(ChannelOptimizer.AVAILABLE_CHANNELS_BAND.get(band));
 		channelsB.removeLast();
-		dataModel.latestDeviceStatus.put(
+		dataModel.latestDeviceStatusRadios.put(
 			deviceB,
 			TestUtils.createDeviceStatus(band, 40)
 		);
@@ -272,7 +272,7 @@ public class LeastUsedChannelOptimizerTest {
 		channelsC.addAll(ChannelOptimizer.AVAILABLE_CHANNELS_BAND.get(band));
 		channelsC.addAll(ChannelOptimizer.AVAILABLE_CHANNELS_BAND.get(band));
 		channelsC.removeFirst();
-		dataModel.latestDeviceStatus.put(
+		dataModel.latestDeviceStatusRadios.put(
 			deviceC,
 			TestUtils.createDeviceStatus(band, 149)
 		);
@@ -324,7 +324,7 @@ public class LeastUsedChannelOptimizerTest {
 		// A -> No APs on current channel and the current channel is in allowedChannels,
 		// so stay on it (48)
 		int aExpectedChannel = 48;
-		dataModel.latestDeviceStatus.put(
+		dataModel.latestDeviceStatusRadios.put(
 			deviceA,
 			TestUtils.createDeviceStatus(band, aExpectedChannel)
 		);
@@ -347,7 +347,7 @@ public class LeastUsedChannelOptimizerTest {
 		LinkedList<Integer> channelsB = new LinkedList<>();
 		channelsB.addAll(ChannelOptimizer.AVAILABLE_CHANNELS_BAND.get(band));
 		channelsB.removeLast();
-		dataModel.latestDeviceStatus.put(
+		dataModel.latestDeviceStatusRadios.put(
 			deviceB,
 			TestUtils.createDeviceStatus(band, 40)
 		);
@@ -368,7 +368,7 @@ public class LeastUsedChannelOptimizerTest {
 		channelsC.addAll(ChannelOptimizer.AVAILABLE_CHANNELS_BAND.get(band));
 		channelsC.addAll(ChannelOptimizer.AVAILABLE_CHANNELS_BAND.get(band));
 		channelsC.removeFirst();
-		dataModel.latestDeviceStatus.put(
+		dataModel.latestDeviceStatusRadios.put(
 			deviceC,
 			TestUtils.createDeviceStatus(band, 149)
 		);
@@ -414,7 +414,7 @@ public class LeastUsedChannelOptimizerTest {
 
 		// A -> No APs on current channel, so stay on it (48)
 		int aExpectedChannel = 157;
-		dataModel.latestDeviceStatus.put(
+		dataModel.latestDeviceStatusRadios.put(
 			deviceA,
 			TestUtils.createDeviceStatus(band, aExpectedChannel)
 		);
@@ -438,7 +438,7 @@ public class LeastUsedChannelOptimizerTest {
 		channelsB.addAll(Arrays.asList(40, 48, 153, 161));
 		channelsB.addAll(Arrays.asList(40, 48, 153, 161));
 		int bExpectedChannel = channelsB.removeLast() - 4; // upper extension
-		dataModel.latestDeviceStatus.put(
+		dataModel.latestDeviceStatusRadios.put(
 			deviceB,
 			TestUtils.createDeviceStatus(band, 40)
 		);
@@ -459,7 +459,7 @@ public class LeastUsedChannelOptimizerTest {
 		channelsC.addAll(ChannelOptimizer.AVAILABLE_CHANNELS_BAND.get(band));
 		channelsC.addAll(ChannelOptimizer.AVAILABLE_CHANNELS_BAND.get(band));
 		int cExpectedChannel = channelsC.removeFirst();
-		dataModel.latestDeviceStatus.put(
+		dataModel.latestDeviceStatusRadios.put(
 			deviceC,
 			TestUtils.createDeviceStatus(band, 149)
 		);
@@ -479,7 +479,7 @@ public class LeastUsedChannelOptimizerTest {
 		LinkedList<Integer> channelsD = new LinkedList<>();
 		channelsD.addAll(Arrays.asList(36, 44, 149, 157));
 		int dExpectedChannel = channelsD.removeLast();
-		dataModel.latestDeviceStatus.put(
+		dataModel.latestDeviceStatusRadios.put(
 			deviceD,
 			TestUtils.createDeviceStatus(band, 40)
 		);
@@ -532,7 +532,7 @@ public class LeastUsedChannelOptimizerTest {
 
 		// A -> No APs on current channel, so stay on it (36)
 		int aExpectedChannel = 36;
-		dataModel.latestDeviceStatus.put(
+		dataModel.latestDeviceStatusRadios.put(
 			deviceA,
 			TestUtils.createDeviceStatus(band, aExpectedChannel)
 		);
@@ -554,7 +554,7 @@ public class LeastUsedChannelOptimizerTest {
 		LinkedList<Integer> channelsB = new LinkedList<>();
 		channelsB.addAll(Arrays.asList(40, 48, 149));
 		int bExpectedChannel = channelsB.removeLast();
-		dataModel.latestDeviceStatus.put(
+		dataModel.latestDeviceStatusRadios.put(
 			deviceB,
 			TestUtils.createDeviceStatus(band, 36)
 		);
@@ -575,7 +575,7 @@ public class LeastUsedChannelOptimizerTest {
 		channelsC.addAll(ChannelOptimizer.AVAILABLE_CHANNELS_BAND.get(band));
 		channelsC.addAll(ChannelOptimizer.AVAILABLE_CHANNELS_BAND.get(band));
 		int cExpectedChannel = channelsC.removeFirst();
-		dataModel.latestDeviceStatus.put(
+		dataModel.latestDeviceStatusRadios.put(
 			deviceC,
 			TestUtils.createDeviceStatus(band, 149)
 		);
@@ -597,7 +597,7 @@ public class LeastUsedChannelOptimizerTest {
 		channelsD.addAll(Arrays.asList(40, 48, 153, 161));
 		channelsD.addAll(Arrays.asList(40, 48, 153, 161));
 		int dExpectedChannel = channelsD.removeLast() - 12;
-		dataModel.latestDeviceStatus.put(
+		dataModel.latestDeviceStatusRadios.put(
 			deviceD,
 			TestUtils.createDeviceStatus(band, 36)
 		);
@@ -622,7 +622,7 @@ public class LeastUsedChannelOptimizerTest {
 			.put(UCentralConstants.BAND_5G, Arrays.asList(48, 165));
 		deviceDataManager.setDeviceApConfig(deviceE, apConfig);
 		int eExpectedChannel = 36;
-		dataModel.latestDeviceStatus.put(
+		dataModel.latestDeviceStatusRadios.put(
 			deviceE,
 			TestUtils.createDeviceStatus(band, eExpectedChannel)
 		);
@@ -668,7 +668,7 @@ public class LeastUsedChannelOptimizerTest {
 
 		// A -> No APs on current channel, so stay on it (48)
 		int aExpectedChannel = 48;
-		dataModel.latestDeviceStatus.put(
+		dataModel.latestDeviceStatusRadios.put(
 			deviceA,
 			TestUtils.createDeviceStatus(band, aExpectedChannel)
 		);
@@ -689,7 +689,7 @@ public class LeastUsedChannelOptimizerTest {
 		// B -> Same setting as A, but the scan results are bandwidth aware
 		// Assign to only free channel (165)
 		int bExpectedChannel = 165;
-		dataModel.latestDeviceStatus.put(
+		dataModel.latestDeviceStatusRadios.put(
 			deviceB,
 			TestUtils.createDeviceStatus(band, 48)
 		);
@@ -721,7 +721,7 @@ public class LeastUsedChannelOptimizerTest {
 		channelsC1.addAll(ChannelOptimizer.AVAILABLE_CHANNELS_BAND.get(band));
 		channelsC2.addAll(Arrays.asList(36, 157, 165));
 		int cExpectedChannel = channelsC1.removeFirst();
-		dataModel.latestDeviceStatus.put(
+		dataModel.latestDeviceStatusRadios.put(
 			deviceC,
 			TestUtils.createDeviceStatus(band, 149)
 		);

src/test/java/com/facebook/openwifirrm/optimizers/channel/RandomChannelInitializerTest.java

@@ -54,11 +54,11 @@ public class RandomChannelInitializerTest {
 			deviceB,
 			TestUtils.createState(11, channelWidth, deviceBBssid)
 		);
-		dataModel.latestDeviceStatus.put(
+		dataModel.latestDeviceStatusRadios.put(
 			deviceA,
 			TestUtils.createDeviceStatus(band, 7)
 		);
-		dataModel.latestDeviceStatus.put(
+		dataModel.latestDeviceStatusRadios.put(
 			deviceB,
 			TestUtils.createDeviceStatus(band, 8)
 		);
@@ -99,11 +99,11 @@ public class RandomChannelInitializerTest {
 			deviceB,
 			TestUtils.createState(11, channelWidth, deviceBBssid)
 		);
-		dataModel.latestDeviceStatus.put(
+		dataModel.latestDeviceStatusRadios.put(
 			deviceA,
 			TestUtils.createDeviceStatus(band, 7)
 		);
-		dataModel.latestDeviceStatus.put(
+		dataModel.latestDeviceStatusRadios.put(
 			deviceB,
 			TestUtils.createDeviceStatus(band, 8)
 		);

src/test/java/com/facebook/openwifirrm/optimizers/channel/UnmanagedApAwareChannelOptimizerTest.java

@@ -52,7 +52,7 @@ public class UnmanagedApAwareChannelOptimizerTest {
 
 		// A -> No APs on current channel, so stay on it (48)
 		int aExpectedChannel = 48;
-		dataModel.latestDeviceStatus.put(
+		dataModel.latestDeviceStatusRadios.put(
 			deviceA,
 			TestUtils.createDeviceStatus(band, aExpectedChannel)
 		);
@@ -76,7 +76,7 @@ public class UnmanagedApAwareChannelOptimizerTest {
 		LinkedList<Integer> channelsB = new LinkedList<>();
 		channelsB.addAll(ChannelOptimizer.AVAILABLE_CHANNELS_BAND.get(band));
 		int bExpectedChannel = channelsB.removeLast();
-		dataModel.latestDeviceStatus.put(
+		dataModel.latestDeviceStatusRadios.put(
 			deviceB,
 			TestUtils.createDeviceStatus(band, 40)
 		);
@@ -110,7 +110,7 @@ public class UnmanagedApAwareChannelOptimizerTest {
 			)
 		);
 		int cExpectedChannel = 48;
-		dataModel.latestDeviceStatus.put(
+		dataModel.latestDeviceStatusRadios.put(
 			deviceC,
 			TestUtils.createDeviceStatus(band, 149)
 		);
@@ -156,7 +156,7 @@ public class UnmanagedApAwareChannelOptimizerTest {
 
 		// A -> No APs on current channel, so stay on it (1)
 		int aExpectedChannel = 1;
-		dataModel.latestDeviceStatus.put(
+		dataModel.latestDeviceStatusRadios.put(
 			deviceA,
 			TestUtils.createDeviceStatus(band, aExpectedChannel)
 		);
@@ -178,7 +178,7 @@ public class UnmanagedApAwareChannelOptimizerTest {
 		LinkedList<Integer> channelsB = new LinkedList<>();
 		channelsB.addAll(ChannelOptimizer.AVAILABLE_CHANNELS_BAND.get(band));
 		int bExpectedChannel = channelsB.removeLast();
-		dataModel.latestDeviceStatus.put(
+		dataModel.latestDeviceStatusRadios.put(
 			deviceB,
 			TestUtils.createDeviceStatus(band, 6)
 		);
@@ -196,7 +196,7 @@ public class UnmanagedApAwareChannelOptimizerTest {
 
 		// C -> Assigned to only free prioritized channel (1)
 		int cExpectedChannel = 1;
-		dataModel.latestDeviceStatus.put(
+		dataModel.latestDeviceStatusRadios.put(
 			deviceC,
 			TestUtils.createDeviceStatus(band, 6)
 		);

src/test/java/com/facebook/openwifirrm/optimizers/tpc/LocationBasedOptimalTPCTest.java

@@ -128,7 +128,7 @@ public class LocationBasedOptimalTPCTest {
 
 		DataModel dataModel = new DataModel();
 		for (String device : Arrays.asList(deviceA, deviceB, deviceC)) {
-			dataModel.latestDeviceStatus.put(
+			dataModel.latestDeviceStatusRadios.put(
 				device,
 				TestUtils.createDeviceStatus(UCentralConstants.BANDS)
 			);
@@ -195,7 +195,7 @@ public class LocationBasedOptimalTPCTest {
 
 		DataModel dataModel2 = new DataModel();
 		for (String device : Arrays.asList(deviceA, deviceB)) {
-			dataModel2.latestDeviceStatus.put(
+			dataModel2.latestDeviceStatusRadios.put(
 				device,
 				TestUtils.createDeviceStatus(UCentralConstants.BANDS)
 			);
@@ -213,7 +213,7 @@ public class LocationBasedOptimalTPCTest {
 				)
 			);
 		}
-		dataModel2.latestDeviceStatus
+		dataModel2.latestDeviceStatusRadios
 			.put(
 				deviceC,
 				TestUtils.createDeviceStatus(
@@ -304,7 +304,7 @@ public class LocationBasedOptimalTPCTest {
 
 		DataModel dataModel2 = new DataModel();
 		for (String device : Arrays.asList(deviceA, deviceB, deviceC)) {
-			dataModel2.latestDeviceStatus.put(
+			dataModel2.latestDeviceStatusRadios.put(
 				device,
 				TestUtils.createDeviceStatus(UCentralConstants.BANDS)
 			);
@@ -363,7 +363,7 @@ public class LocationBasedOptimalTPCTest {
 
 		DataModel dataModel3 = new DataModel();
 		for (String device : Arrays.asList(deviceA, deviceB, deviceC)) {
-			dataModel3.latestDeviceStatus.put(
+			dataModel3.latestDeviceStatusRadios.put(
 				device,
 				TestUtils.createDeviceStatus(UCentralConstants.BANDS)
 			);
@@ -412,7 +412,7 @@ public class LocationBasedOptimalTPCTest {
 
 		DataModel dataModel4 = new DataModel();
 		for (String device : Arrays.asList(deviceA, deviceB, deviceC)) {
-			dataModel4.latestDeviceStatus.put(
+			dataModel4.latestDeviceStatusRadios.put(
 				device,
 				TestUtils.createDeviceStatus(UCentralConstants.BANDS)
 			);

src/test/java/com/facebook/openwifirrm/optimizers/tpc/MeasurementBasedApApTPCTest.java

@@ -34,7 +34,6 @@ import com.facebook.openwifirrm.ucentral.UCentralConstants;
 import com.facebook.openwifirrm.ucentral.UCentralUtils;
 import com.facebook.openwifirrm.ucentral.WifiScanEntry;
 import com.facebook.openwifirrm.ucentral.models.State;
-import com.google.gson.JsonArray;
 
 @TestMethodOrder(OrderAnnotation.class)
 public class MeasurementBasedApApTPCTest {
@@ -122,17 +121,17 @@ public class MeasurementBasedApApTPCTest {
 		model.latestState.put(DEVICE_B, stateB);
 		model.latestState.put(DEVICE_C, stateC);
 
-		model.latestDeviceStatus.put(
+		model.latestDeviceStatusRadios.put(
 			DEVICE_A,
 			TestUtils
 				.createDeviceStatusDualBand(1, MAX_TX_POWER, 36, MAX_TX_POWER)
 		);
-		model.latestDeviceStatus.put(
+		model.latestDeviceStatusRadios.put(
 			DEVICE_B,
 			TestUtils
 				.createDeviceStatusDualBand(1, MAX_TX_POWER, 36, MAX_TX_POWER)
 		);
-		model.latestDeviceStatus.put(
+		model.latestDeviceStatusRadios.put(
 			DEVICE_C,
 			TestUtils
 				.createDeviceStatusDualBand(1, MAX_TX_POWER, 36, MAX_TX_POWER)
@@ -298,25 +297,6 @@ public class MeasurementBasedApApTPCTest {
 
 	@Test
 	@Order(2)
-	void testGetCurrentTxPower() throws Exception {
-		final int expectedTxPower = 29;
-
-		DataModel model = new DataModel();
-		model.latestDeviceStatus.put(
-			DEVICE_A,
-			TestUtils.createDeviceStatusDualBand(1, 5, 36, expectedTxPower)
-		);
-
-		JsonArray radioStatuses =
-			model.latestDeviceStatus.get(DEVICE_A).getAsJsonArray();
-		int txPower = MeasurementBasedApApTPC
-			.getCurrentTxPower(radioStatuses, UCentralConstants.BAND_5G)
-			.get();
-		assertEquals(expectedTxPower, txPower);
-	}
-
-	@Test
-	@Order(3)
 	void testBuildRssiMap() throws Exception {
 		// This example includes three APs, and one AP that is unmanaged
 		Set<String> bssidSet = Set.of(BSSID_A, BSSID_B, BSSID_C);
@@ -338,7 +318,7 @@ public class MeasurementBasedApApTPCTest {
 	}
 
 	@Test
-	@Order(4)
+	@Order(3)
 	void testComputeTxPower() throws Exception {
 		// Test examples here taken from algorithm design doc from @pohanhf
 		final String serialNumber = "testSerial";
@@ -513,12 +493,13 @@ public class MeasurementBasedApApTPCTest {
 			)
 		);
 		// make device C not operate in the 5G band instead of dual band
-		dataModel.latestDeviceStatus.put(
+		dataModel.latestState.put(
 			DEVICE_C,
-			TestUtils.createDeviceStatus(
+			TestUtils.createState(
-				UCentralConstants.BAND_2G,
 				1,
-				MAX_TX_POWER
+				DEFAULT_CHANNEL_WIDTH,
+				MAX_TX_POWER,
+				BSSID_C
 			)
 		);
 		DeviceDataManager deviceDataManager = createDeviceDataManager();

src/test/java/com/facebook/openwifirrm/ucentral/UCentralUtilsTest.java

@@ -8,7 +8,12 @@
 
 package com.facebook.openwifirrm.ucentral;
 
+import java.util.Collections;
+import java.util.Map;
+
 import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertTrue;
+import static org.junit.jupiter.api.Assertions.assertFalse;
 
 import org.junit.jupiter.api.Test;
 
@@ -17,4 +22,60 @@ public class UCentralUtilsTest {
 	void test_placeholder() throws Exception {
 		assertEquals(3, 1 + 2);
 	}
+
+	@Test
+	void test_setRadioConfigFieldChannel() throws Exception {
+		final String serialNumber = "aaaaaaaaaaaa";
+		final int expectedChannel = 1;
+		final Map<String, Integer> newValueList = Collections
+			.singletonMap(UCentralConstants.BAND_5G, expectedChannel);
+
+		// test case where channel value is a string and not an integer
+		UCentralApConfiguration config = new UCentralApConfiguration(
+			"{\"interfaces\": [], \"radios\": [{\"band\": \"5G\", \"channel\": \"auto\"}]}"
+		);
+		boolean modified = UCentralUtils
+			.setRadioConfigField(serialNumber, config, "channel", newValueList);
+		assertTrue(modified);
+		assertEquals(
+			config.getRadioConfig(0).get("channel").getAsInt(),
+			expectedChannel
+		);
+
+		// field doesn't exist
+		config = new UCentralApConfiguration(
+			"{\"interfaces\": [], \"radios\": [{\"band\": \"5G\"}]}"
+		);
+		modified = UCentralUtils
+			.setRadioConfigField(serialNumber, config, "channel", newValueList);
+		assertTrue(modified);
+		assertEquals(
+			config.getRadioConfig(0).get("channel").getAsInt(),
+			expectedChannel
+		);
+
+		// normal field, not modified
+		config = new UCentralApConfiguration(
+			"{\"interfaces\": [], \"radios\": [{\"band\": \"5G\", \"channel\": 1}]}"
+		);
+		modified = UCentralUtils
+			.setRadioConfigField(serialNumber, config, "channel", newValueList);
+		assertFalse(modified);
+		assertEquals(
+			config.getRadioConfig(0).get("channel").getAsInt(),
+			expectedChannel
+		);
+
+		// normal field, modified
+		config = new UCentralApConfiguration(
+			"{\"interfaces\": [], \"radios\": [{\"band\": \"5G\", \"channel\": 15}]}"
+		);
+		modified = UCentralUtils
+			.setRadioConfigField(serialNumber, config, "channel", newValueList);
+		assertTrue(modified);
+		assertEquals(
+			config.getRadioConfig(0).get("channel").getAsInt(),
+			expectedChannel
+		);
+	}
 }

src/test/java/com/facebook/openwifirrm/ucentral/operationelement/VHTOperationElementTest.java

@@ -19,8 +19,8 @@ public class VHTOperationElementTest {
 		String vhtOper = "ACQAAAA=";
 		VHTOperationElement vhtOperObj = new VHTOperationElement(vhtOper);
 		byte expectedChannelWidthIndicator = 0; // 20 MHz channel width
-		byte expectedChannel1 = 36;
+		short expectedChannel1 = 36;
-		byte expectedChannel2 = 0;
+		short expectedChannel2 = 0;
 		byte[] expectedVhtMcsForNss = new byte[] { 0, 0, 0, 0, 0, 0, 0, 0 };
 		VHTOperationElement expectedVhtOperObj = new VHTOperationElement(
 			expectedChannelWidthIndicator,
@@ -57,5 +57,20 @@ public class VHTOperationElementTest {
 			expectedVhtMcsForNss
 		);
 		assertEquals(expectedVhtOperObj, vhtOperObj);
+
+		// test with channel number >= 128 (channel fields should be unsigned)
+		vhtOper = "AJUAAAA=";
+		vhtOperObj = new VHTOperationElement(vhtOper);
+		expectedChannelWidthIndicator = 0;
+		expectedChannel1 = 149;
+		expectedChannel2 = 0;
+		expectedVhtMcsForNss = new byte[] { 0, 0, 0, 0, 0, 0, 0, 0 };
+		expectedVhtOperObj = new VHTOperationElement(
+			expectedChannelWidthIndicator,
+			expectedChannel1,
+			expectedChannel2,
+			expectedVhtMcsForNss
+		);
+		assertEquals(expectedVhtOperObj, vhtOperObj);
 	}
 }