diff --git a/RELEASE_NOTES b/RELEASE_NOTES
index 2fddf40f5..8b35f5edd 100644
--- a/RELEASE_NOTES
+++ b/RELEASE_NOTES
@@ -56,6 +56,7 @@ Bugs fixed
 - Bug 2848 - wifi: Association ID not correctly set upon association
 - Bug 2849 - lte: Received RLC and PDCP PDUs are missing in the stats files
 - Bug 2854 - wifi: he-wifi-network crashes when frequency is set at 2.4 GHz
+- Bug 2877 - wifi: Wrong data types for CWmin and CWmax
 
 Known issues
 ------------
diff --git a/examples/wireless/examples-to-run.py b/examples/wireless/examples-to-run.py
index 7a9f479f5..db5c1cd80 100755
--- a/examples/wireless/examples-to-run.py
+++ b/examples/wireless/examples-to-run.py
@@ -46,7 +46,7 @@ cpp_examples = [
     ("he-wifi-network --simulationTime=0.3 --frequency=5 --useRts=1 --minExpectedThroughput=6 --maxExpectedThroughput=639", "True", "True"),
     ("he-wifi-network --simulationTime=0.25 --frequency=2.4 --useRts=0 --minExpectedThroughput=6 --maxExpectedThroughput=238", "True", "True"),
     ("he-wifi-network --simulationTime=0.25 --frequency=2.4 --useRts=1 --minExpectedThroughput=6 --maxExpectedThroughput=224", "True", "True"),
-    ("simple-ht-hidden-stations --simulationTime=1 --minExpectedThroughput=16.5 --maxExpectedThroughput=17", "True", "True"),
+    ("simple-ht-hidden-stations --simulationTime=1 --minExpectedThroughput=22 --maxExpectedThroughput=22.5", "True", "True"),
     ("mixed-network --simulationTime=1", "True", "True"),
     ("wifi-aggregation --simulationTime=1 --verifyResults=1", "True", "True"),
     ("80211e-txop --simulationTime=1 --verifyResults=1", "True", "True"),
diff --git a/src/wifi/model/edca-parameter-set.cc b/src/wifi/model/edca-parameter-set.cc
index a81a994a8..6a1f19b4d 100644
--- a/src/wifi/model/edca-parameter-set.cc
+++ b/src/wifi/model/edca-parameter-set.cc
@@ -77,14 +77,14 @@ EdcaParameterSet::SetBeAci (uint8_t aci)
 }
 
 void
-EdcaParameterSet::SetBeCWmin (uint8_t cwMin)
+EdcaParameterSet::SetBeCWmin (uint32_t cwMin)
 {
   uint8_t ECWmin = log2 (cwMin + 1);
   m_acBE |= (ECWmin & 0x0f) << 8;
 }
 
 void
-EdcaParameterSet::SetBeCWmax (uint8_t cwMax)
+EdcaParameterSet::SetBeCWmax (uint32_t cwMax)
 {
   uint8_t ECWmax = log2 (cwMax + 1);
   m_acBE |= (ECWmax & 0x0f) << 12;
@@ -115,14 +115,14 @@ EdcaParameterSet::SetBkAci (uint8_t aci)
 }
 
 void
-EdcaParameterSet::SetBkCWmin (uint8_t cwMin)
+EdcaParameterSet::SetBkCWmin (uint32_t cwMin)
 {
   uint8_t ECWmin = log2 (cwMin + 1);
   m_acBK |= (ECWmin & 0x0f) << 8;
 }
 
 void
-EdcaParameterSet::SetBkCWmax (uint8_t cwMax)
+EdcaParameterSet::SetBkCWmax (uint32_t cwMax)
 {
   uint8_t ECWmax = log2 (cwMax + 1);
   m_acBK |= (ECWmax & 0x0f) << 12;
@@ -153,14 +153,14 @@ EdcaParameterSet::SetViAci (uint8_t aci)
 }
 
 void
-EdcaParameterSet::SetViCWmin (uint8_t cwMin)
+EdcaParameterSet::SetViCWmin (uint32_t cwMin)
 {
   uint8_t ECWmin = log2 (cwMin + 1);
   m_acVI |= (ECWmin & 0x0f) << 8;
 }
 
 void
-EdcaParameterSet::SetViCWmax (uint8_t cwMax)
+EdcaParameterSet::SetViCWmax (uint32_t cwMax)
 {
   uint8_t ECWmax = log2 (cwMax + 1);
   m_acVI |= (ECWmax & 0x0f) << 12;
@@ -191,14 +191,14 @@ EdcaParameterSet::SetVoAci (uint8_t aci)
 }
 
 void
-EdcaParameterSet::SetVoCWmin (uint8_t cwMin)
+EdcaParameterSet::SetVoCWmin (uint32_t cwMin)
 {
   uint8_t ECWmin = log2 (cwMin + 1);
   m_acVO |= (ECWmin & 0x0f) << 8;
 }
 
 void
-EdcaParameterSet::SetVoCWmax (uint8_t cwMax)
+EdcaParameterSet::SetVoCWmax (uint32_t cwMax)
 {
   uint8_t ECWmax = log2 (cwMax + 1);
   m_acVO |= (ECWmax & 0x0f) << 12;
@@ -234,14 +234,14 @@ EdcaParameterSet::GetBeAci (void) const
   return ((m_acBE >> 5) & 0x03);
 }
 
-uint8_t
+uint32_t
 EdcaParameterSet::GetBeCWmin (void) const
 {
   uint8_t ECWmin = ((m_acBE >> 8) & 0x0f);
   return (exp2 (ECWmin) - 1);
 }
 
-uint8_t
+uint32_t
 EdcaParameterSet::GetBeCWmax (void) const
 {
   uint8_t ECWmax = ((m_acBE >> 12) & 0x0f);
@@ -272,14 +272,14 @@ EdcaParameterSet::GetBkAci (void) const
   return ((m_acBK >> 5) & 0x03);
 }
 
-uint8_t
+uint32_t
 EdcaParameterSet::GetBkCWmin (void) const
 {
   uint8_t ECWmin = ((m_acBK >> 8) & 0x0f);
   return (exp2 (ECWmin) - 1);
 }
 
-uint8_t
+uint32_t
 EdcaParameterSet::GetBkCWmax (void) const
 {
   uint8_t ECWmax = ((m_acBK >> 12) & 0x0f);
@@ -310,14 +310,14 @@ EdcaParameterSet::GetViAci (void) const
   return ((m_acVI >> 5) & 0x03);
 }
 
-uint8_t
+uint32_t
 EdcaParameterSet::GetViCWmin (void) const
 {
   uint8_t ECWmin = ((m_acVI >> 8) & 0x0f);
   return (exp2 (ECWmin) - 1);
 }
 
-uint8_t
+uint32_t
 EdcaParameterSet::GetViCWmax (void) const
 {
   uint8_t ECWmax = ((m_acVI >> 12) & 0x0f);
@@ -348,14 +348,14 @@ EdcaParameterSet::GetVoAci (void) const
   return ((m_acVO >> 5) & 0x03);
 }
 
-uint8_t
+uint32_t
 EdcaParameterSet::GetVoCWmin (void) const
 {
   uint8_t ECWmin = ((m_acVO >> 8) & 0x0f);
   return (exp2 (ECWmin) - 1);
 }
 
-uint8_t
+uint32_t
 EdcaParameterSet::GetVoCWmax (void) const
 {
   uint8_t ECWmax = ((m_acVO >> 12) & 0x0f);
diff --git a/src/wifi/model/edca-parameter-set.h b/src/wifi/model/edca-parameter-set.h
index 74b2c3516..de5d089f0 100644
--- a/src/wifi/model/edca-parameter-set.h
+++ b/src/wifi/model/edca-parameter-set.h
@@ -75,13 +75,13 @@ public:
    *
    * \param cwMin the AC_BE CWmin field in the EdcaParameterSet information element
    */
-  void SetBeCWmin (uint8_t cwMin);
+  void SetBeCWmin (uint32_t cwMin);
   /**
    * Set the AC_BE CWmax field in the EdcaParameterSet information element.
    *
    * \param cwMax the AC_BE CWmax field in the EdcaParameterSet information element
    */
-  void SetBeCWmax (uint8_t cwMax);
+  void SetBeCWmax (uint32_t cwMax);
   /**
    * Set the AC_BE TXOP Limit field in the EdcaParameterSet information element.
    *
@@ -111,13 +111,13 @@ public:
    *
    * \param cwMin the AC_BK CWmin field in the EdcaParameterSet information element
    */
-  void SetBkCWmin (uint8_t cwMin);
+  void SetBkCWmin (uint32_t cwMin);
   /**
    * Set the AC_BK CWmax field in the EdcaParameterSet information element.
    *
    * \param cwMax the AC_BK CWmax field in the EdcaParameterSet information element
    */
-  void SetBkCWmax (uint8_t cwMax);
+  void SetBkCWmax (uint32_t cwMax);
   /**
    * Set the AC_BK TXOP Limit field in the EdcaParameterSet information element.
    *
@@ -147,13 +147,13 @@ public:
    *
    * \param cwMin the AC_VI CWmin field in the EdcaParameterSet information element
    */
-  void SetViCWmin (uint8_t cwMin);
+  void SetViCWmin (uint32_t cwMin);
   /**
    * Set the AC_VI CWmax field in the EdcaParameterSet information element.
    *
    * \param cwMax the AC_VI CWmax field in the EdcaParameterSet information element
    */
-  void SetViCWmax (uint8_t cwMax);
+  void SetViCWmax (uint32_t cwMax);
   /**
    * Set the AC_VI TXOP Limit field in the EdcaParameterSet information element.
    *
@@ -183,13 +183,13 @@ public:
    *
    * \param cwMin the AC_VO CWmin field in the EdcaParameterSet information element
    */
-  void SetVoCWmin (uint8_t cwMin);
+  void SetVoCWmin (uint32_t cwMin);
   /**
    * Set the AC_VO CWmax field in the EdcaParameterSet information element.
    *
    * \param cwMax the AC_VO CWmax field in the EdcaParameterSet information element
    */
-  void SetVoCWmax (uint8_t cwMax);
+  void SetVoCWmax (uint32_t cwMax);
   /**
    * Set the AC_VO TXOP Limit field in the EdcaParameterSet information element.
    *
@@ -226,13 +226,13 @@ public:
    *
    * \return the AC_BE CWmin field in the EdcaParameterSet information element
    */
-  uint8_t GetBeCWmin (void) const;
+  uint32_t GetBeCWmin (void) const;
   /**
    * Return the AC_BE CWmax field in the EdcaParameterSet information element.
    *
    * \return the AC_BE CWmax field in the EdcaParameterSet information element
    */
-  uint8_t GetBeCWmax (void) const;
+  uint32_t GetBeCWmax (void) const;
   /**
    * Return the AC_BE TXOP Limit field in the EdcaParameterSet information element.
    *
@@ -262,13 +262,13 @@ public:
    *
    * \return the AC_BK CWmin field in the EdcaParameterSet information element
    */
-  uint8_t GetBkCWmin (void) const;
+  uint32_t GetBkCWmin (void) const;
   /**
    * Return the AC_BK CWmax field in the EdcaParameterSet information element.
    *
    * \return the AC_BK CWmax field in the EdcaParameterSet information element
    */
-  uint8_t GetBkCWmax (void) const;
+  uint32_t GetBkCWmax (void) const;
   /**
    * Return the AC_BK TXOP Limit field in the EdcaParameterSet information element.
    *
@@ -298,13 +298,13 @@ public:
    *
    * \return the AC_VI CWmin field in the EdcaParameterSet information element
    */
-  uint8_t GetViCWmin (void) const;
+  uint32_t GetViCWmin (void) const;
   /**
    * Return the AC_VI CWmax field in the EdcaParameterSet information element.
    *
    * \return the AC_VI CWmax field in the EdcaParameterSet information element
    */
-  uint8_t GetViCWmax (void) const;
+  uint32_t GetViCWmax (void) const;
   /**
    * Return the AC_VI TXOP Limit field in the EdcaParameterSet information element.
    *
@@ -334,13 +334,13 @@ public:
    *
    * \return the AC_VO CWmin field in the EdcaParameterSet information element
    */
-  uint8_t GetVoCWmin (void) const;
+  uint32_t GetVoCWmin (void) const;
   /**
    * Return the AC_VO CWmax field in the EdcaParameterSet information element.
    *
    * \return the AC_VO CWmax field in the EdcaParameterSet information element
    */
-  uint8_t GetVoCWmax (void) const;
+  uint32_t GetVoCWmax (void) const;
   /**
    * Return the AC_VO TXOP Limit field in the EdcaParameterSet information element.
    *
diff --git a/src/wifi/model/sta-wifi-mac.cc b/src/wifi/model/sta-wifi-mac.cc
index 9ff63861f..ca88d80e5 100644
--- a/src/wifi/model/sta-wifi-mac.cc
+++ b/src/wifi/model/sta-wifi-mac.cc
@@ -929,7 +929,7 @@ StaWifiMac::SetState (MacState value)
 }
 
 void
-StaWifiMac::SetEdcaParameters (AcIndex ac, uint8_t cwMin, uint8_t cwMax, uint8_t aifsn, Time txopLimit)
+StaWifiMac::SetEdcaParameters (AcIndex ac, uint32_t cwMin, uint32_t cwMax, uint8_t aifsn, Time txopLimit)
 {
   Ptr<EdcaTxopN> edca = m_edca.find (ac)->second;
   edca->SetMinCw (cwMin);
diff --git a/src/wifi/model/sta-wifi-mac.h b/src/wifi/model/sta-wifi-mac.h
index 7a84de69f..7d37bbfb6 100644
--- a/src/wifi/model/sta-wifi-mac.h
+++ b/src/wifi/model/sta-wifi-mac.h
@@ -156,7 +156,7 @@ private:
    * \param aifsn the number of slots that make up an AIFS
    * \param txopLimit the TXOP limit
    */
-  void SetEdcaParameters (AcIndex ac, uint8_t cwMin, uint8_t cwMax, uint8_t aifsn, Time txopLimit);
+  void SetEdcaParameters (AcIndex ac, uint32_t cwMin, uint32_t cwMax, uint8_t aifsn, Time txopLimit);
   /**
    * Return the Capability information of the current STA.
    *