Motorola Corporation

Motorola Solutions, Inc.

Mestnetworks, Inc.

Guenael J Strutt

Avinash Joshi

Charles R Barker

Sebnem Zorlu Ozer

A Wireless Router (WR) aggregates information regarding the emergency calls based on their context and routes the aggregated emergency information to the correct portal which directs the aggregated emergency to appropriate Public Safety Answering Point (PSAP). The information aggregation is automatically triggered when the number of calls exceeds the multihop capacity to the egress point. The PSAP responds to the emergency situation by sending a response message via the Portal. The WR multicast/broadcasts the response message to the mobile devices which initiated the emergency calls. The response message generally includes emergency instructions based on incident type and location. Further, a call-back list is created for users whose emergency calls were not completed. By using the call-back list PSAP personnel can initiate calls to end users to provide assistance in emergency situations.

Method and apparatus for aggregating information in a wireless communication system

A technique for improving the capability of measuring the distance between nodes of a wireless communication network is provided. Technique () includes receiving a measured signal, correlating the measured signal with a reference signal to output a measured correlated function, comparing the correlation function to a predetermined reference correlation function, the reference correlation function being based on a predetermined direct path sequence and an estimation of the phase delay of the measured correlated function. A score is assigned to the measured correlation function based on how close the measured correlation function resembles the predetermined reference correlation function. Technique () provides improved location accuracy, even in multipath environments, by indicating the quality of the TOA measurement and enabling the selection of a correction mechanism.

Method and system for improving time of arrival (TOA) measurements in a wireless communication network

A system and method for avoiding collisions between packets transmitted in a wireless network (). A first node (or) in the wireless network () can transmit a packet to a second node (or) in the wireless network (), such that packet includes a header that is transmitted with a higher processing gain than the data, therefore, may be received and processed by a third node (or. This allows the third node (or) to detect the transmission of a packet by the first node (or), which can cause the third node (or) to avoid transmission of a packet during the transmission by the first node (or) to avoid collision between the packets. The system and method further enables the nodes (or) to determine whether they can transmit to another node (or) based on estimates of interference conditions that can be experienced due to the presence of other nodes (or).

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Sanford, FL, United States of America

Guenael J Strutt