Patent ID: 8462662
Filing Date: 2013-06-11
Classification: H04L,H04W

Abstract:
1. A method of maintaining presence information associated with a wireless data communication device of a data communications network, comprising: communicating a message from a first node of the data communications network to a gateway device along a pathway, the pathway including the wireless data communication device as an intermediary node of the pathway; including with the message the pathway by which the message is communicated in the wireless data communication device; storing, in a computer readable medium at the gateway device, information representing the pathway; updating, at the gateway device, presence information of the wireless data communication device; communicating an acknowledgment of the message to the first node along a reverse pathway; and upon communicating the acknowledgement of the message by the wireless data communication device, resetting a timer used by the wireless data communication device to trigger the sending of a presence indication of the wireless data communication device to the gateway device; communicating, by the gateway device, to an application of a client device, the message from the first node.