Patent ID: 8160537

Claim:
A method of aggregating information at a wireless communication device in a wireless communication system, the method comprising: receiving a request for an emergency call; estimating available bandwidth for the emergency call; and when the estimated available bandwidth is less than a predetermined threshold or the wireless communication device has received an aggregation trigger: extracting high level information from a plurality of emergency calls, creating a multicast tree based on the extracted high level information, aggregating emergency information based at least on the extracted information, sending the aggregated emergency information to a gateway wherein the gateway directs the information to a Public Safety Answering Point (PSAP) based on a pre-stored PSAP list which maps a plurality of PSAPs with different locations, receiving a response message from the PSAP in response to the sent aggregated information, wherein the response message comprises at least information related to an emergency context, and transmitting an emergency message to the plurality of wireless communication devices based on the multicast tree, wherein the emergency message is one of the response message and a stored emergency message.