Communication system and apparatus for status dependent mobile services

摘要

The present invention relates to a method for paging a mobile node in idle state comprising the steps of: sending, by a serving gateway when no active bearer exists, a Downlink Data Notification message including bearer ID of a bearer to a MME when the serving gateway receives a downlink data packet for the mobile node on the bearer; sending, by the MME to limit Downlink data notification, a Delay Downlink Packet Notification Request with priority information to the serving gateway; and sending, by the serving gateway, a new Downlink Data Notification message to the MME, only when the serving gateway receives a new downlink data packet on a bearer with higher priority than the bearer indicated by the priority information. The present invention further relates to a serving gateway for triggering a MME to page a mobile node in idle state.