diff --git a/project/ble_peripheral/ble_app_bladder_patch/main.c b/project/ble_peripheral/ble_app_bladder_patch/main.c
index 10b6890..a12a39d 100644
--- a/project/ble_peripheral/ble_app_bladder_patch/main.c
+++ b/project/ble_peripheral/ble_app_bladder_patch/main.c
@@ -609,7 +609,24 @@ static void nus_data_handler(ble_nus_evt_t * p_evt)
     {
         cmd_type_t = CMD_BLE;
         ble_got_new_data = true;
-        
+
+        /* Central이 연결 간격을 늘렸을 수 있으므로 빠른 간격 재요청 (30초에 1회) */
+        {
+            static uint32_t last_update_tick = 0;
+            uint32_t now_tick = app_timer_cnt_get();
+            if (last_update_tick == 0 ||
+                app_timer_cnt_diff_compute(now_tick, last_update_tick) >= APP_TIMER_TICKS(30000))
+            {
+                ble_gap_conn_params_t conn_params;
+                conn_params.min_conn_interval = MIN_CONN_INTERVAL;
+                conn_params.max_conn_interval = MAX_CONN_INTERVAL;
+                conn_params.slave_latency     = SLAVE_LATENCY;
+                conn_params.conn_sup_timeout  = CONN_SUP_TIMEOUT;
+                sd_ble_gap_conn_param_update(m_conn_handle, &conn_params);
+                last_update_tick = now_tick;
+            }
+        }
+
         /* 콜백에서는 복사만 하고, 메인 루프에서 처리 */
         if (p_evt->params.rx_data.length <= BLE_NUS_MAX_DATA_LEN)
         {