Symbol Technologies, LLC

William J Sakoda

David P Goren

Raj Bridgelall

Jacob Sharony

Benjamin J Bekritsky

Huayan Amy Wang

Michael Faith

Edward Moskaluk

Kelly Schlueter

Moushumi Sen

Stephen F Paulus

Michael N Hagans

Kaustubh Kale

John H Du Hart, Iv

Kaustubh R Kale

IP unicast communication is provided between mobile devices in a wide area network and a wireless local area network coupled by a gateway component. Data communication is established between a mobile device and the wireless local area network, thereby receiving a first unicast IP address associated with the mobile device. A multicast group is joined within the wireless local area network and registering with that multicast group using a predetermined multicast IP address as a destination IP address and the first unicast IP address as a source address. The device disconnects from data communication within the wireless local area network, thereby releasing the first unicast IP address. Data communication is established between the mobile device and the wide area network, thereby receiving a second unicast IP address associated with the mobile device. The device then automatically communicates with the gateway component, via the wide area network, to specify the second unicast IP address as the source address for the mobile device within the multicast group.

Methods and apparatus for WAN/WLAN unicast and multicast communication

A system and method embeds text in a multicast transmission. An exemplary method comprises receiving non-voice data. The non-voice data is embedded within digitized voice data. The digitized voice data with the embedded non-voice data is wirelessly transmitted, by a computing device, as a multicast transmission to a plurality of mobile devices.

System and method for embedding text in multicast transmissions

A method that enables the power saving frame transmission comprising an AP informing a plurality of stations within its range in a WLAN about a plurality of scheduled service periods during which the AP has access to a channel in a scheduled service time, receiving the information about the plurality of scheduled service periods by the plurality of stations and deciding about initiating or not initiating a frame transmission, whether or not an acknowledgement and an immediate response expected from other APs pertaining to said WLAN are received prior to a subsequent scheduled service time, wherein the frame is transmitted in a cooperative frame transmission scenario.

Power saving frame transmission method

A system and method for synchronizing internal clocks of receiving stations of a locating system are described. A beacon transmits reference data packets at a known position. A first arrival time is compared to a second arrival time to determine a correlated arrival time data. The first arrival time is a time of reception of the reference data packets by a first receiving station, and the second arrival time is a time of reception of the reference data packets by a second receiving station. A linear polynomial fit is computed as a function of the correlated arrival time data and the first and second arrival times. Times of arrival of data packets at the first and second receiving stations is synchronized as a function of the linear polynomial fit.

Wireless clock synchronization

A method, comprising the steps of appending a data packet to a data stream queue ('DSQ'), the DSQ having a priority level, allocating a quantum of bandwidth to the DSQ and transmitting the data packet as a function of the priority level and the quantum of bandwidth.

System and method for wireless network channel management

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E. Setauket, NY, United States of America

William J Sakoda