diff --git a/4G/4g.c b/4G/4g.c
index 5bfc673..1f384a4 100644
--- a/4G/4g.c
+++ b/4G/4g.c
@@ -2,4 +2,9 @@
 void sch_4g_init(void)
 {
 	uint8_t status = get_4g_status();
+}
+
+void sch_4g_set_parameter(char * param)
+{
+	
 }
\ No newline at end of file
diff --git a/4G/4g.h b/4G/4g.h
index 0e095f4..8cc22c9 100644
--- a/4G/4g.h
+++ b/4G/4g.h
@@ -1,3 +1,4 @@
 #include <string.h>
 
-void sch_4g_init(void);
\ No newline at end of file
+void sch_4g_init(void);
+void sch_4g_set_parameter(char * param);
\ No newline at end of file