diff --git a/include/dto/comm_big_data_test.h b/include/dto/comm_big_data_test.h
new file mode 100644
index 0000000..117dadd
--- /dev/null
+++ b/include/dto/comm_big_data_test.h
@@ -0,0 +1,14 @@
+#ifndef COMM_BIG_DATA_TEST_H
+#define COMM_BIG_DATA_TEST_H  
+#include <cstdint>
+#include "../enum/icd_id.h"
+#define MAX_BIG_DATA_SIZE (1024 * 1024)
+#pragma pack(push, 1)
+struct CommBigDataTest {
+  IcdId message_id;
+  uint32_t counter;
+  uint32_t big_data_size;
+  uint8_t big_data[MAX_BIG_DATA_SIZE];
+};
+#pragma pack(pop)
+#endif // COMM_BIG_DATA_TEST_H
diff --git a/include/dto/comm_reliable_test.h b/include/dto/comm_reliable_test.h
new file mode 100644
index 0000000..e899ddc
--- /dev/null
+++ b/include/dto/comm_reliable_test.h
@@ -0,0 +1,14 @@
+#ifndef COMM_RELIABLE_TEST_H
+#define COMM_RELIABLE_TEST_H
+
+#include <cstdint>
+#include "../enum/icd_id.h"
+
+#pragma pack(push, 1)
+struct CommReliableTest {
+  IcdId message_id;
+  uint32_t counter;
+};
+#pragma pack(pop)
+
+#endif // COMM_RELIABLE_TEST_H
\ No newline at end of file
diff --git a/include/enum/icd_id.h b/include/enum/icd_id.h
index 9124d98..cd62fb8 100644
--- a/include/enum/icd_id.h
+++ b/include/enum/icd_id.h
@@ -36,7 +36,9 @@ enum class IcdId : uint16_t {
   GUIDANCE_COMMAND = 0x0018,  // 유도 명령 (guidance_command)
   MISSILE_TARGET_STATE =
       0x0019,  // 미사일/표적 참값 상태 (missile_target_state)
-  NAVIGATION_TEST_COMMAND = 0x001A  // 항법시험 명령 (navigation_test_command)
+  NAVIGATION_TEST_COMMAND = 0x001A,  // 항법시험 명령 (navigation_test_command)
+  COMM_RELIABLE_TEST = 0xFFF0,  // 통신 신뢰성 테스트용 ICD ID (comm_reliable_test)
+  COMM_BIG_DATA_TEST = 0xFFF1   // 통신 대용량 데이터 테스트용 ICD ID (comm_big_data_test)
 };
 
 #endif  // ICD_ID_H