diff --git a/scheduler/schedule.cpp b/scheduler/schedule.cpp
index c2a3d4a..eeac214 100644
--- a/scheduler/schedule.cpp
+++ b/scheduler/schedule.cpp
@@ -250,7 +250,7 @@ long SensorScheduler::CalcNextTimestamp(int id, uint16_t short_addr) {
                             }
                         }
                     }
-                } else if (MissedWave(short_addr)) {                    
+                } else if (!MissedWave(short_addr)) {                    
                      for (int i = 0; i < wave_slice_num_per_eigen_interval_; ++i) {
                         if (slice_sensor_id_[i+forward_wave_slice_num] == 0) {
                             // 判断此空闲位置是否被占用