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Patent

Hierarchical Data Collection Network Supporting Packetized Voice Communications Among Wireless Terminals and Telephones

TLDR
In this paper, a packet-based, hierarchical communication system, arranged in a spanning tree configuration, is described in which wired and wireless communication networks exhibiting substantially different characteristics are employed in an overall scheme to link portable or mobile computing devices.
Abstract
A packet-based, hierarchical communication system, arranged in a spanning tree configuration, is described in which wired and wireless communication networks exhibiting substantially different characteristics are employed in an overall scheme to link portable or mobile computing devices. The network accommodates real time voice transmission both through dedicated, scheduled bandwidth and through a packet-based routing within the confines and constraints of a data network. Conversion and call processing circuitry is also disclosed which enables access devices and personal computers to adapt voice information between analog voice stream and digital voice packet formats as proves necessary. Routing pathways include wireless spanning tree networks, wide area networks, telephone switching networks, internet, etc., in a manner virtually transparent to the user. A voice session and associate call setup simulates that of conventional telephone switching network, providing well-understood functionality common to any mobile, remote or stationary terminal, phone, computer, etc.

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References
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Journal ArticleDOI

Ethernet: distributed packet switching for local computer networks

TL;DR: The design principles and implementation are described, based on experience with an operating Ethernet of 100 nodes along a kilometer of coaxial cable, of a model for estimating performance under heavy loads and a packet protocol for error controlled communication.
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TL;DR: In this article, a communication system (20) is provided with multiple purpose personal communication devices (50 and 150), each communication device includes a touch-sensitive visual display (60 and 160) to communicate text and graphic information to and from the user and for operating the communication device.
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TL;DR: In this article, a file server architecture consisting of a network controller unit, a file controller unit and a storage processor unit is described, which operate in parallel with a local Unix host processor.
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TL;DR: In this article, a system and method for wireless communication between a plurality of subscriber units and a base station, the base station communicating information signals from an originating source to a destination subscriber unit over a channel at an assigned one of a plurality OF frequencies using repetitive time frames, each said time frame comprising a sequence of time slots.