Hi I've already fix my problem, the problem was in the wifi, it was sleeping after some time so I added a wifilock and in the constructor of the class in I'm using WIFI_MODE_FULL_HIGH_PERF this flag avoid the device turn off the wifi
wifilock = manager.createWifiLock(3,TAG);// WIFI_MODE_FULL_HIGH_PERF
The only problem is this flag is only available since API 12, but for now is not a big deal into my project. If you want more information in this linkWIFI_MODE_FULL_HIGH_PERF