diff --git a/4G/4g.c b/4G/4g.c
index 1f384a4..97093f5 100644
--- a/4G/4g.c
+++ b/4G/4g.c
@@ -7,4 +7,8 @@ void sch_4g_init(void)
 void sch_4g_set_parameter(char * param)
 {
 	
+}
+
+void sch_4g_get_parameter(char *param)
+{
 }
\ No newline at end of file