diff --git a/src/util/scheduler-scoped-event-id.cpp b/src/util/scheduler-scoped-event-id.cpp
index 0ca7d13..d83fa4c 100644
--- a/src/util/scheduler-scoped-event-id.cpp
+++ b/src/util/scheduler-scoped-event-id.cpp
@@ -25,34 +25,24 @@
 namespace util {
 namespace scheduler {
 
-static_assert(std::is_nothrow_move_constructible<ScopedEventId>::value,
-              "ScopedEventId must be MoveConstructible with noexcept");
-
-ScopedEventId::ScopedEventId(Scheduler& scheduler)
+ScopedEventId::ScopedEventId(Scheduler& scheduler) noexcept
   : m_scheduler(&scheduler)
 {
 }
 
-ScopedEventId::ScopedEventId(ScopedEventId&& other) noexcept
-  : m_scheduler(other.m_scheduler)
-  , m_event(other.m_event)
-{
-  other.release();
-}
-
 ScopedEventId&
-ScopedEventId::operator=(const EventId& event)
+ScopedEventId::operator=(EventId event)
 {
   if (m_event != event) {
-    m_scheduler->cancelEvent(m_event);
-    m_event = event;
+    cancel();
+    m_event = std::move(event);
   }
   return *this;
 }
 
-ScopedEventId::~ScopedEventId() noexcept
+ScopedEventId::~ScopedEventId()
 {
-  m_scheduler->cancelEvent(m_event);
+  cancel();
 }
 
 void
diff --git a/src/util/scheduler-scoped-event-id.hpp b/src/util/scheduler-scoped-event-id.hpp
index ea27016..703a745 100644
--- a/src/util/scheduler-scoped-event-id.hpp
+++ b/src/util/scheduler-scoped-event-id.hpp
@@ -1,6 +1,6 @@
 /* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
-/**
- * Copyright (c) 2013-2016 Regents of the University of California.
+/*
+ * Copyright (c) 2013-2018 Regents of the University of California.
  *
  * This file is part of ndn-cxx library (NDN C++ library with eXperimental eXtensions).
  *
@@ -28,44 +28,53 @@
 namespace util {
 namespace scheduler {
 
-/** \brief Event that is automatically cancelled upon destruction
+/** \brief Event that is automatically cancelled upon destruction.
  */
-class ScopedEventId : noncopyable
+class ScopedEventId
 {
 public:
-  /** \brief Construct ScopedEventId tied to the specified scheduler
+  /** \brief Construct ScopedEventId tied to the specified scheduler.
    *  \param scheduler Scheduler to which the event is tied.  Behavior is undefined if
-   *                   scheduler is destructed before an uncanceled ScopedEventId.
+   *                   \p scheduler is destructed before an uncanceled ScopedEventId.
    */
   explicit
-  ScopedEventId(Scheduler& scheduler);
+  ScopedEventId(Scheduler& scheduler) noexcept;
 
-  /** \brief move constructor
+  ScopedEventId(const ScopedEventId&) = delete;
+
+  ScopedEventId&
+  operator=(const ScopedEventId&) = delete;
+
+  /** \brief Move constructor.
    */
-  ScopedEventId(ScopedEventId&& other) noexcept;
+  ScopedEventId(ScopedEventId&&) noexcept;
 
-  /** \brief assigns an event
+  /** \brief Move assignment operator.
+   */
+  ScopedEventId&
+  operator=(ScopedEventId&&) noexcept;
+
+  /** \brief Assign an event.
    *
    *  If a different event has been assigned to this instance previously,
    *  that event will be cancelled immediately.
    *
-   *  \note The caller should ensure that ScopedEventId is tied to a correct scheduler.
-   *        Behavior is undefined when assigning event scheduled in another scheduler instance.
+   *  \note The caller should ensure that this ScopedEventId is tied to the correct Scheduler.
+   *        Behavior is undefined when assigning an event scheduled in another Scheduler instance.
    */
   ScopedEventId&
-  operator=(const EventId& event);
+  operator=(EventId event);
 
-  /** \brief cancels the event
+  /** \brief Destructor, automatically cancels the event.
    */
-  ~ScopedEventId() noexcept;
+  ~ScopedEventId();
 
-  /** \brief cancels the event manually
+  /** \brief Manually cancel the event.
    */
   void
   cancel();
 
-  /** \brief releases the event so that it won't be canceled
-   *         when this ScopedEventId is destructed
+  /** \brief Release the event so that it won't be canceled when this ScopedEventId is destructed.
    */
   void
   release() noexcept;
@@ -75,6 +84,12 @@
   EventId m_event;
 };
 
+inline
+ScopedEventId::ScopedEventId(ScopedEventId&&) noexcept = default;
+
+inline ScopedEventId&
+ScopedEventId::operator=(ScopedEventId&&) noexcept = default;
+
 } // namespace scheduler
 } // namespace util
 } // namespace ndn
diff --git a/src/util/scheduler.cpp b/src/util/scheduler.cpp
index aecf15a..9e52b25 100644
--- a/src/util/scheduler.cpp
+++ b/src/util/scheduler.cpp
@@ -51,15 +51,16 @@
   EventQueue::const_iterator queueIt;
 };
 
-EventId::operator bool() const
+EventId::operator bool() const noexcept
 {
-  return !m_info.expired() && !m_info.lock()->isExpired;
+  auto sp = m_info.lock();
+  return sp != nullptr && !sp->isExpired;
 }
 
 bool
-EventId::operator==(const EventId& other) const
+EventId::operator==(const EventId& other) const noexcept
 {
-  return (!(*this) && !other) ||
+  return (!*this && !other) ||
          !(m_info.owner_before(other.m_info) || other.m_info.owner_before(m_info));
 }
 
@@ -70,7 +71,7 @@
 }
 
 bool
-EventQueueCompare::operator()(const shared_ptr<EventInfo>& a, const shared_ptr<EventInfo>& b) const
+EventQueueCompare::operator()(const shared_ptr<EventInfo>& a, const shared_ptr<EventInfo>& b) const noexcept
 {
   return a->expireTime < b->expireTime;
 }
diff --git a/src/util/scheduler.hpp b/src/util/scheduler.hpp
index 79fbf23..bd4467a 100644
--- a/src/util/scheduler.hpp
+++ b/src/util/scheduler.hpp
@@ -57,7 +57,8 @@
    * \brief Constructs an empty EventId
    * \note EventId is implicitly convertible from nullptr.
    */
-  EventId(std::nullptr_t = nullptr)
+  constexpr
+  EventId(std::nullptr_t = nullptr) noexcept
   {
   }
 
@@ -66,16 +67,16 @@
    * \retval false This EventId is empty, or the event is expired or cancelled.
    */
   explicit
-  operator bool() const;
+  operator bool() const noexcept;
 
   /**
    * \return whether this and other refer to the same event, or are both empty/expired/cancelled
    */
   bool
-  operator==(const EventId& other) const;
+  operator==(const EventId& other) const noexcept;
 
   bool
-  operator!=(const EventId& other) const
+  operator!=(const EventId& other) const noexcept
   {
     return !this->operator==(other);
   }
@@ -86,15 +87,15 @@
    * \post !(*this)
    */
   void
-  reset()
+  reset() noexcept
   {
     m_info.reset();
   }
 
 private:
   explicit
-  EventId(const weak_ptr<EventInfo>& info)
-    : m_info(info)
+  EventId(weak_ptr<EventInfo> info) noexcept
+    : m_info(std::move(info))
   {
   }
 
@@ -112,7 +113,7 @@
 {
 public:
   bool
-  operator()(const shared_ptr<EventInfo>& a, const shared_ptr<EventInfo>& b) const;
+  operator()(const shared_ptr<EventInfo>& a, const shared_ptr<EventInfo>& b) const noexcept;
 };
 
 using EventQueue = std::multiset<shared_ptr<EventInfo>, EventQueueCompare>;
diff --git a/src/util/signal/connection.cpp b/src/util/signal/connection.cpp
index 7d46eb1..1d93326 100644
--- a/src/util/signal/connection.cpp
+++ b/src/util/signal/connection.cpp
@@ -1,6 +1,6 @@
 /* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
 /*
- * Copyright (c) 2013-2017 Regents of the University of California.
+ * Copyright (c) 2013-2018 Regents of the University of California.
  *
  * This file is part of ndn-cxx library (NDN C++ library with eXperimental eXtensions).
  *
@@ -27,26 +27,22 @@
 
 BOOST_CONCEPT_ASSERT((boost::EqualityComparable<Connection>));
 
-Connection::Connection()
-{
-}
-
-Connection::Connection(weak_ptr<function<void()>> disconnect)
-  : m_disconnect(disconnect)
+Connection::Connection(weak_ptr<function<void()>> disconnect) noexcept
+  : m_disconnect(std::move(disconnect))
 {
 }
 
 void
 Connection::disconnect()
 {
-  shared_ptr<function<void()>> f = m_disconnect.lock();
+  auto f = m_disconnect.lock();
   if (f != nullptr) {
     (*f)();
   }
 }
 
 bool
-Connection::isConnected() const
+Connection::isConnected() const noexcept
 {
   return !m_disconnect.expired();
 }
@@ -54,8 +50,8 @@
 bool
 Connection::operator==(const Connection& other) const
 {
-  shared_ptr<function<void()>> f1 = m_disconnect.lock();
-  shared_ptr<function<void()>> f2 = other.m_disconnect.lock();
+  auto f1 = m_disconnect.lock();
+  auto f2 = other.m_disconnect.lock();
   return f1 == f2;
 }
 
diff --git a/src/util/signal/connection.hpp b/src/util/signal/connection.hpp
index 6ee8e1c..528dcba 100644
--- a/src/util/signal/connection.hpp
+++ b/src/util/signal/connection.hpp
@@ -1,6 +1,6 @@
 /* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
 /*
- * Copyright (c) 2013-2017 Regents of the University of California.
+ * Copyright (c) 2013-2018 Regents of the University of California.
  *
  * This file is part of ndn-cxx library (NDN C++ library with eXperimental eXtensions).
  *
@@ -34,7 +34,8 @@
 class Connection
 {
 public:
-  Connection();
+  constexpr
+  Connection() noexcept = default;
 
   /** \brief disconnects from the signal
    *  \note If the connection is already disconnected, or if the Signal has been destructed,
@@ -49,7 +50,7 @@
    *  \return false if disconnected from the signal
    */
   bool
-  isConnected() const;
+  isConnected() const noexcept;
 
   /** \brief compare for equality
    *
@@ -66,7 +67,7 @@
   /** \param disconnect weak_ptr to a function that disconnects the handler
    */
   explicit
-  Connection(weak_ptr<function<void()>> disconnect);
+  Connection(weak_ptr<function<void()>> disconnect) noexcept;
 
   template<typename Owner, typename ...TArgs>
   friend class Signal;
diff --git a/src/util/signal/scoped-connection.cpp b/src/util/signal/scoped-connection.cpp
index 3fed4a3..7a231b0 100644
--- a/src/util/signal/scoped-connection.cpp
+++ b/src/util/signal/scoped-connection.cpp
@@ -25,35 +25,24 @@
 namespace util {
 namespace signal {
 
-static_assert(std::is_nothrow_move_constructible<ScopedConnection>::value,
-              "ScopedConnection must be MoveConstructible with noexcept");
-
-ScopedConnection::ScopedConnection() = default;
-
-ScopedConnection::ScopedConnection(const Connection& connection)
-  : m_connection(connection)
+ScopedConnection::ScopedConnection(Connection connection) noexcept
+  : m_connection(std::move(connection))
 {
 }
 
-ScopedConnection::ScopedConnection(ScopedConnection&& other) noexcept
-  : m_connection(other.m_connection)
-{
-  other.release();
-}
-
 ScopedConnection&
-ScopedConnection::operator=(const Connection& connection)
+ScopedConnection::operator=(Connection connection)
 {
   if (m_connection != connection) {
-    m_connection.disconnect();
-    m_connection = connection;
+    disconnect();
+    m_connection = std::move(connection);
   }
   return *this;
 }
 
-ScopedConnection::~ScopedConnection() noexcept
+ScopedConnection::~ScopedConnection()
 {
-  m_connection.disconnect();
+  disconnect();
 }
 
 void
@@ -63,13 +52,13 @@
 }
 
 bool
-ScopedConnection::isConnected() const
+ScopedConnection::isConnected() const noexcept
 {
   return m_connection.isConnected();
 }
 
 void
-ScopedConnection::release()
+ScopedConnection::release() noexcept
 {
   m_connection = {};
 }
diff --git a/src/util/signal/scoped-connection.hpp b/src/util/signal/scoped-connection.hpp
index 5c77c2f..f352be0 100644
--- a/src/util/signal/scoped-connection.hpp
+++ b/src/util/signal/scoped-connection.hpp
@@ -1,6 +1,6 @@
 /* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
 /*
- * Copyright (c) 2013-2017 Regents of the University of California.
+ * Copyright (c) 2013-2018 Regents of the University of California.
  *
  * This file is part of ndn-cxx library (NDN C++ library with eXperimental eXtensions).
  *
@@ -28,56 +28,73 @@
 namespace util {
 namespace signal {
 
-/** \brief disconnects a Connection automatically upon destruction
+/** \brief Disconnects a Connection automatically upon destruction.
  */
-class ScopedConnection : noncopyable
+class ScopedConnection
 {
 public:
-  ScopedConnection();
+  constexpr
+  ScopedConnection() noexcept = default;
 
-  /** \brief implicit constructor from Connection
+  ScopedConnection(const ScopedConnection&) = delete;
+
+  ScopedConnection&
+  operator=(const ScopedConnection&) = delete;
+
+  /** \brief Move constructor.
+   */
+  ScopedConnection(ScopedConnection&&) noexcept;
+
+  /** \brief Move assignment operator.
+   */
+  ScopedConnection&
+  operator=(ScopedConnection&&) noexcept;
+
+  /** \brief Implicit constructor from Connection.
    *  \param connection the Connection to be disconnected upon destruction
    */
-  ScopedConnection(const Connection& connection);
+  ScopedConnection(Connection connection) noexcept;
 
-  /** \brief move constructor
-   */
-  ScopedConnection(ScopedConnection&& other) noexcept;
-
-  /** \brief assigns a connection
+  /** \brief Assign a connection.
    *
    *  If a different connection has been assigned to this instance previously,
    *  that connection will be disconnected immediately.
    */
   ScopedConnection&
-  operator=(const Connection& connection);
+  operator=(Connection connection);
 
-  /** \brief disconnects the connection
+  /** \brief Destructor, automatically disconnects the connection.
    */
-  ~ScopedConnection() noexcept;
+  ~ScopedConnection();
 
-  /** \brief disconnects the connection manually
+  /** \brief Manually disconnect the connection.
    */
   void
   disconnect();
 
-  /** \brief check if the connection is connected to the signal
+  /** \brief Check if the connection is connected to the signal.
    *  \return false when a default-constructed connection is used, the connection is released,
    *          or the connection is disconnected
    */
   bool
-  isConnected() const;
+  isConnected() const noexcept;
 
-  /** \brief releases the connection so that it won't be disconnected
-   *         when this ScopedConnection is destructed
+  /** \brief Release the connection so that it won't be disconnected
+   *         when this ScopedConnection is destructed.
    */
   void
-  release();
+  release() noexcept;
 
 private:
   Connection m_connection;
 };
 
+inline
+ScopedConnection::ScopedConnection(ScopedConnection&&) noexcept = default;
+
+inline ScopedConnection&
+ScopedConnection::operator=(ScopedConnection&&) noexcept = default;
+
 } // namespace signal
 } // namespace util
 } // namespace ndn