diff --git a/df_datalink_sp/src/networking/phy_layer/phy_layer.c b/df_datalink_sp/src/networking/phy_layer/phy_layer.c
index 8975c55..55b695b 100644
--- a/df_datalink_sp/src/networking/phy_layer/phy_layer.c
+++ b/df_datalink_sp/src/networking/phy_layer/phy_layer.c
@@ -35,10 +35,31 @@
 
 
 /************************** Constant Definitions *****************************/
-#define TOR_BUFF_MAX_SIZE 1024 // 8192bits
+#define L1_FRAME_NONE_LEN UINT32_MAX		// byte
+#define L1_FRAME_LEN_MAX (8192 / 8)			// byte
+#define L1_FRAME_2KBPS_20MS_LEN 0			// byte
+#define L1_FRAME_2KBPS_100MS_LEN (312 / 8)	// byte
+#define L1_FRAME_10KBPS_10MS_LEN 0			// byte
+#define L1_FRAME_10KBPS_20MS_LEN (232 / 8)	// byte
+#define L1_FRAME_40KBPS_20MS_LEN (2152 / 8) // byte
+#define L1_FRAME_40KBPS_10MS_LEN (712 / 8)	// byte
+#define L1_FRAME_200KBPS_5MS_LEN (2040 / 8) // byte
+#define L1_FRAME_1M2BPS_5MS_LEN (8176 / 8)	// byte
+
+#define L1_FRAME_NONE_COMP UINT32_MAX	  // *10ns(Timer_L)
+#define L1_FRAME_2KBPS_20MS_COMP 1841158  // *10ns(Timer_L)
+#define L1_FRAME_2KBPS_100MS_COMP 1841158 // *10ns(Timer_L)
+#define L1_FRAME_10KBPS_10MS_COMP 850950  // *10ns(Timer_L)
+#define L1_FRAME_10KBPS_20MS_COMP 850950  // *10ns(Timer_L)
+#define L1_FRAME_40KBPS_20MS_COMP 110667  // *10ns(Timer_L)
+#define L1_FRAME_40KBPS_10MS_COMP 110667  // *10ns(Timer_L)
+#define L1_FRAME_200KBPS_5MS_COMP 22493	  // *10ns(Timer_L)
+#define L1_FRAME_1M2BPS_5MS_COMP 22493	  // *10ns(Timer_L)
+
+#define L1_ANTCONFIG_MAX_LEN 8192
+#define L1_TXRXDATA_MAX_LEN 2048
+
 #define ANT_COINFO_LEN 32 // bytes
-#define ANTCONFIG_MAX_LEN (8192 / 2)
-#define PAYLOAD_MAX_LEN (4096 / 2)
 
 /***************** Macros (Inline Functions) Definitions *********************/
 /************************** Function Prototypes ******************************/
diff --git a/df_datalink_sp/src/networking/phy_layer/phy_layer.h b/df_datalink_sp/src/networking/phy_layer/phy_layer.h
index b5948d8..5b8dcf2 100644
--- a/df_datalink_sp/src/networking/phy_layer/phy_layer.h
+++ b/df_datalink_sp/src/networking/phy_layer/phy_layer.h
@@ -35,9 +35,6 @@
 #include "../../system_monitor.h"
 #include "../../time_ctrl/time_ctrl.h"
 /************************** Constant Definitions *****************************/
-#define L1_TMWORD_FRAC_MAX 500000
-#define L1_ANTCONFIG_MAX_LEN 8192
-#define L1_TXRXDATA_MAX_LEN 2048
 #define L1_NUM_ANT_SUBNRRW_PATTERN 37
 #define L1_NUM_ANT_NRRW_PATTERN 61
 #define L1_INIT_BEAM_NO 0
@@ -55,27 +52,6 @@
 #define L1_FRAME_200KBPS_5MS_HOPS 20
 #define L1_FRAME_1M2BPS_5MS_HOPS 20
 
-#define L1_FRAME_NONE_LEN UINT32_MAX		// byte
-#define L1_FRAME_LEN_MAX (8192 / 8)			// byte
-#define L1_FRAME_2KBPS_20MS_LEN 1			// byte
-#define L1_FRAME_2KBPS_100MS_LEN 312 / 8	// byte
-#define L1_FRAME_10KBPS_10MS_LEN 1			// byte
-#define L1_FRAME_10KBPS_20MS_LEN (232 / 8)	// byte
-#define L1_FRAME_40KBPS_20MS_LEN (2152 / 8) // byte
-#define L1_FRAME_40KBPS_10MS_LEN (712 / 8)	// byte
-#define L1_FRAME_200KBPS_5MS_LEN (2040 / 8) // byte
-#define L1_FRAME_1M2BPS_5MS_LEN (8176 / 8)	// byte
-
-#define L1_FRAME_NONE_COMP UINT32_MAX	  // *10ns(Timer_L)
-#define L1_FRAME_2KBPS_20MS_COMP 1841158  // *10ns(Timer_L)
-#define L1_FRAME_2KBPS_100MS_COMP 1841158 // *10ns(Timer_L)
-#define L1_FRAME_10KBPS_10MS_COMP 850950  // *10ns(Timer_L)
-#define L1_FRAME_10KBPS_20MS_COMP 850950  // *10ns(Timer_L)
-#define L1_FRAME_40KBPS_20MS_COMP 110667  // *10ns(Timer_L)
-#define L1_FRAME_40KBPS_10MS_COMP 110667  // *10ns(Timer_L)
-#define L1_FRAME_200KBPS_5MS_COMP 22493	  // *10ns(Timer_L)
-#define L1_FRAME_1M2BPS_5MS_COMP 22493	  // *10ns(Timer_L)
-
 #define PHY_TIME_WORD_H_MAX UINT32_MAX
 #define PHY_TIME_WORD_L_MAX 0x0007A120 // 5ms/10ns
 /***************** Macros (Inline Functions) Definitions *********************/