diff --git a/.gitignore b/.gitignore
index e4a9790f..b63af361 100644
--- a/.gitignore
+++ b/.gitignore
@@ -2,9 +2,15 @@
 astra-sim-alibabacloud/build/simai_analytical/build/
 astra-sim-alibabacloud/build/astra_ns3/build/
 astra-sim-alibabacloud/extern/
+astra-sim-alibabacloud/inputs/config/
+!astra-sim-alibabacloud/inputs/config/SimAI.conf
 bin/
 results/
 test/log/
 *.log
 .cur*
 .DS_Store
+
+**/build
+**/cmake-cache
+!astra-sim-alibabacloud/build
diff --git a/CMakeLists.txt b/CMakeLists.txt
new file mode 100644
index 00000000..38cf0c18
--- /dev/null
+++ b/CMakeLists.txt
@@ -0,0 +1,104 @@
+# CMake requirement
+cmake_minimum_required(VERSION 3.15)
+
+# C++ requirement
+set(CMAKE_CXX_STANDARD 17)
+set(CMAKE_CXX_STANDARD_REQUIRED True)
+add_definitions("-Wall -g")
+
+if(NOT CMAKE_BUILD_TYPE)
+    set(CMAKE_BUILD_TYPE "Debug" CACHE STRING "Default build type" FORCE)
+endif()
+
+# Compiler requirement
+if (CMAKE_CXX_COMPILER_ID STREQUAL "GNU")
+    if (CMAKE_CXX_COMPILER_VERSION VERSION_LESS 5.3)
+        message(FATAL_ERROR "g++ (GNU) version should be greater than 5.3, but found ${CMAKE_CXX_COMPILER_VERSION}")
+    endif()
+endif()
+
+project(SimAI)
+
+set(NS3_SRC_DIR "${CMAKE_CURRENT_SOURCE_DIR}/ns-3-alibabacloud/simulation")
+set(ASTRA_SIM_DIR "${CMAKE_CURRENT_SOURCE_DIR}/astra-sim-alibabacloud/astra-sim")
+set(BUILD_DIR "${CMAKE_CURRENT_BINARY_DIR}")
+set(RESULT_DIR "${CMAKE_CURRENT_SOURCE_DIR}}/result")
+
+# Create required directories
+file(MAKE_DIRECTORY ${BUILD_DIR})
+file(MAKE_DIRECTORY ${RESULT_DIR})
+
+# Option to clean build and result directories
+option(CLEAN_BUILD "Clean build directory" OFF)
+option(CLEAN_RESULT "Clean result directory" OFF)
+option(BUILD_SIM "Build NS3 simulation" ON)
+option(BUILD_ANALYTICAL "Build analytical" OFF)
+option(BUILD_PHY "Build physical" OFF)
+
+if(CLEAN_BUILD)
+    message(STATUS "Cleaning build directory: ${BUILD_DIR}")
+    file(REMOVE_RECURSE ${BUILD_DIR})
+    file(REMOVE_RECURSE "${NS3_DIR}/simulation/build")
+    file(REMOVE_RECURSE "${NS3_DIR}/simulation/cmake-cache")
+    file(MAKE_DIRECTORY ${BUILD_DIR})
+endif()
+
+if(CLEAN_RESULT)
+    message(STATUS "Cleaning result directory: ${RESULT_DIR}")
+    file(REMOVE_RECURSE ${RESULT_DIR})
+    file(MAKE_DIRECTORY ${RESULT_DIR})
+endif()
+
+if(BUILD_SIM)
+    # AstraSim
+    add_subdirectory(astra-sim-alibabacloud/build/astra_ns3)
+
+    file(GLOB_RECURSE astra_sim_files CONFIGURE_DEPENDS "${ASTRA_SIM_DIR}/*")
+    list(FILTER astra_sim_files EXCLUDE REGEX "/network_frontend/")
+    foreach(file ${astra_sim_files})
+        string(REPLACE "${ASTRA_SIM_DIR}/" "astra-sim/" relative_path ${file})
+        get_filename_component(output_dir ${NS3_SRC_DIR}/src/applications/${relative_path} DIRECTORY)
+        file(MAKE_DIRECTORY ${output_dir})
+        configure_file(${file} ${NS3_SRC_DIR}/src/applications/${relative_path} COPYONLY)
+    endforeach()
+
+    file(GLOB scratch_files
+            CONFIGURE_DEPENDS
+            ${ASTRA_SIM_DIR}/network_frontend/ns3/*)
+    foreach(file ${scratch_files})
+        get_filename_component(filename ${file} NAME)
+        configure_file(${file} ${NS3_SRC_DIR}/scratch/${filename} COPYONLY)
+    endforeach()
+
+    # NS3
+    string(TOLOWER ${CMAKE_BUILD_TYPE} build_type)
+    if (build_type STREQUAL "release")
+        set(NS3_ASSERT OFF CACHE BOOL "Override NS3_ASSERT" FORCE)
+        set(NS3_LOG OFF CACHE BOOL "Override NS3_LOG" FORCE)
+    endif ()
+    if (NOT DEFINED NS3_WARNINGS_AS_ERRORS)
+        set(NS3_WARNINGS_AS_ERRORS OFF CACHE BOOL "Override NS3_WARNINGS_AS_ERRORS" FORCE)
+    endif ()
+    if (NOT DEFINED NS3_MTP)
+        set(NS3_MTP ON CACHE BOOL "Override NS3_MTP" FORCE)
+    endif ()
+    add_subdirectory(${NS3_SRC_DIR} ${NS3_SRC_DIR}/cmake-cache)
+
+    # Link binaries
+    add_custom_target(create_ns3_symlink
+            COMMAND ${CMAKE_COMMAND} -E make_directory "${CMAKE_CURRENT_SOURCE_DIR}/bin"
+            COMMAND ${CMAKE_COMMAND} -E create_symlink
+                "$<TARGET_FILE:scratch_AstraSimNetwork>"
+                "${CMAKE_CURRENT_SOURCE_DIR}/bin/SimAI_simulator"
+            DEPENDS scratch_AstraSimNetwork
+            COMMENT "Creating simulator symlink..."
+    )
+endif()
+
+if(BUILD_ANALYTICAL)
+    add_subdirectory(astra-sim-alibabacloud/build/simai_analytical)
+endif()
+
+if(BUILD_PHY)
+    add_subdirectory(astra-sim-alibabacloud/build/simai_phy)
+endif()
diff --git a/astra-sim-alibabacloud/build/astra_ns3/CMakeLists.txt b/astra-sim-alibabacloud/build/astra_ns3/CMakeLists.txt
index 90340392..1c467487 100644
--- a/astra-sim-alibabacloud/build/astra_ns3/CMakeLists.txt
+++ b/astra-sim-alibabacloud/build/astra_ns3/CMakeLists.txt
@@ -5,7 +5,9 @@ cmake_minimum_required(VERSION 3.15)
 set(CMAKE_CXX_STANDARD 17)
 set(CMAKE_CXX_STANDARD_REQUIRED True)
 add_definitions("-Wall -g")
-SET(CMAKE_BUILD_TYPE "Debug")
+if(NOT CMAKE_BUILD_TYPE)
+    set(CMAKE_BUILD_TYPE "Debug" CACHE STRING "Default build type" FORCE)
+endif()
 
 # Compiler requirement
 if (CMAKE_CXX_COMPILER_ID STREQUAL "GNU")
diff --git a/ns-3-alibabacloud b/ns-3-alibabacloud
index 781b7d80..29c45258 160000
--- a/ns-3-alibabacloud
+++ b/ns-3-alibabacloud
@@ -1 +1 @@
-Subproject commit 781b7d804736bdbbc184254636d6a3c8cfea9ab4
+Subproject commit 29c45258d9ffcd9ebf4fe384450c2c0d97a34833