Patent ID: 8335832
Filing Date: 2012-12-18
Classification: H04W

Abstract:
1. A method for releasing buffered data of a Serving Gateway, comprising the steps of: the Serving Gateway, Serving GW, buffers downlink data sent to a user and sends a data notification message to a Mobility Management Entity, MME; after receiving the data notification message, the MME initiates a paging to the user and sets a paging timer, if the paging timer expires and no paging response of the user is received, the MME sends a notification message to the Serving GW to inform the Serving GW that there is no paging response from the user; and after receiving the notification message, the Serving GW releases the buffered downlink data, wherein if the paging timer expires and no paging response of the user is received, before sending the notification message to the Serving GW, the MME re-initiates paging to the related downlink eNodeBs at least once and restarts the paging timer at each time of initiating a paging, and if each paging timer expires and no paging response of the user is received, the MME then sends the notification message to the Serving GW.