Patent ID: 9603037
Date: 2017-03-21
CPC Classifications: H04W

Claim:
1. A method of handling delayed signaling of a target mobile device for a first network control node, the method comprising: the first network control node receiving a request from a network gateway node for delivering the request to the target mobile device, wherein the first network control node is a Mobility Management Entity (MME), a Serving GPRS Support Node (SGSN) or a Mobile Switching Center (MSC); the first network control node setting a flag when the first network control node fails to deliver the request to the target mobile device; the first network control node informing a data base to set the flag for the target mobile device when the first network control node fails to deliver the request to the target mobile device, wherein the data base is a Home Location Register (HLR) or a Home Subscriber Server (HSS); and when the target mobile device is reachable in a second network control node, the first network control node sending the flag to the second network control node if the second network control node is not the first network control node, wherein the flag is configured to instruct the second network control node whether to inform the data base about reachability of the target mobile device, wherein according to a status of the flag, the second network control node is capable of determining whether to inform the data base that the target mobile device is reachable in the second network control node.