Abstract: A cellular wireless packet data communication system containing transmit-only endpoint devices which transmit to receive-only base stations. The system is configured to allow for large area coverage (e.g., a metropolitan area) with far fewer number base stations than are required with conventional two-way cellular systems. The base station coverage areas are configured to overlap, allowing for reception of packets at multiple base stations. A data concentrator resolves redundantly received messages. The network is configurable as a WAN, a LAN, or a combination of the two. Novel modulation techniques (e.g., a 16QAM submodulation together with a 7FSK modulation) are used such that low cost components can be used in the transmitters and receivers while achieving outstanding probability of success performance. The endpoint devices are battery operated and accordingly, are designed for low power consumption and multi-year battery life.
Type:
Application
Filed:
November 22, 2006
Publication date:
March 29, 2007
Applicant:
ADVANCED METERING DATA COMM. SYSTEMS, L.L.C.
Inventors:
H. BRITTON SANDERFORD, Robert Rouquette, Gary Naden, Marc Reed, Gordon Boudreaux, Michael Brown
Abstract: A cellular wireless packet data communication system containing transmit-only endpoint devices which transmit to receive-only base stations. The system is configured to allow for large area coverage (e.g., a metropolitan area) with far fewer number base stations than are required with conventional two-way cellular systems. The base station coverage areas are configured to overlap, allowing for reception of packets at multiple base stations. A data concentrator resolves redundantly received messages. The network is configurable as a WAN, a LAN, or a combination of the two. Novel modulation techniques (e.g., a 16QAM submodulation together with a 7FSK modulation) are used such that low cost components can be used in the transmitters and receivers while achieving outstanding probability of success performance. The endpoint devices are battery operated and accordingly, are designed for low power consumption and multi-year battery life.
Type:
Application
Filed:
September 16, 2003
Publication date:
July 8, 2004
Applicant:
ADVANCED METERING DATA COMM. SYSTEMS, L.L.C.
Inventors:
H. Britton Sanderford, Robert E. Rouquette, Gary A. Naden, Marc L. Reed, Gordon J. Boudreaux, Michael R. Brown