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RE39405 |
Network link endpoint capability detection
Support for a mixed network environment is provided which can contain multiple isochronous and/or non-isochronous LAN protocols such as isochronous-ethernet, ethernet, isochronous-token ring, token...
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RE39395 |
Data communication network with transfer port, cascade port and/or frame synchronizing signal
A data communication system, such as a local area network, is provided with a capability of transmitting isochronous data. Preferably the system conveys both isochronous data and non-isochronous...
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RE39216 |
Asynchronous processor access to a switch table in a network with isochronous capability
A data communication system, such as a local area network, is provided with a capability of transmitting isochronous data. Preferably the system conveys both isochronous data and non-isochronous...
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RE39116 |
Network link detection and generation
Support for a mixed network environment is provided which can contain multiple isochronous and/or non-isochronous LAN protocols such as Isochronous-Ethernet. Ethernet, isochronous-token ring, token...
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RE38820 |
Multi-protocol packet framing over an isochronous network
An integrated circuit has an isochronous network port for receiving isochronous information from an isochronous network. To allow the integrated circuit to receive information packaged in...
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EP1528692A1 |
Method of and apparatus for time synchronization in a communication system
Abstract not available
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6674730 |
Method of and apparatus for time synchronization in a communication system
Time alignment of a signal from a remote unit at a hub station of a multiple access system is achieved based upon an initial time indication received from the hub station at the remote unit via a...
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6477183 |
Economical synchronization system for asynchronous transfer mode mobile communication network without dependence on external system
An asynchronous transfer mode network includes a high-level station and a mobile station in a boundary zone between service cells of wireless base stations connected to the high-level station...
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6246873 |
Satellite communication conference system for use in a satellite communication system
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5937357 |
Network comprising base stations for selectivity calling mobile units by call radio signals of different bit rates in phase coincidence
For selective call of mobile units operable at different bit rates, a central station announces a launch start instant of each signal frame to a plurality of base stations based on phase coincident...
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5878034 |
Spacecraft TDMA communications system with synchronization by spread spectrum overlay channel
In a time division multiple access spacecraft communication system, each ground station determines when to send its information packets to arrive at the spacecraft at the beginning of a time slot....
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5822314 |
Communications system and method of operation
A method of operation of a communications system, having first (10) and second communications units (12) communicating frame divided information via a relay device (11). The second communications...
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5818831 |
Digital radio communication apparatus
In a digital radio communication apparatus which carries out radio communication on the basis of TDMA/TDD, the monitoring operation is carried out instead of the transmission operation at the...
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5805597 |
Method and apparatus for providing low power basic telephony type service over a twisted pair ethernet physical layer
A network communication system having at least two communication protocol modes, namely, a full power communication mode and a low power, limited communication mode. In the low power mode, the link...
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5790939 |
Method and system of frame timing synchronization in TDMA based mobile satellite communication system
A method and system for synchronizing transmission TDMA frames in a mobile satellite communication system are disclosed herein. The method of synchronizing a transmitted frame timing in a mobile...
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5697082 |
Self-calibrating frequency standard system
A system for self-calibrating a clock of a communication terminal for use with communication systems in which a central communication node generates time base correction signals for the terminal...
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5668804 |
Base station with time-aligned mobile transmitting moments according to distance to base station
For increasing the radius of the effective service area of a base station in a digital time division multiple access (TDMA) radio network, a first transceiver is provided for communicating with...
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5638375 |
AGC isolation of information in TDMA systems
In a communications system having transmissions containing certain information-of-interest at predetermined intervals in the transmission, there is provided a method for isolating and processing...
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5627830 |
Method and apparatus for transmitting information for multiple independent users in a communication system
An RF cellular communication system employing offset frame synchronization between cells, any cell being omni-directional or directional, such that a frame at one cell is offset by an integral...
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5619507 |
Method and apparatus for establishing and maintaining frame synchronization in a satellite communication system
An apparatus and method for establishing frame synchronization in a satellite communication system which receives a modulated signal having frames, such that a unique word and data are multiplexed...
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5550992 |
Transmission timing control in a base station for cellular TDMA mobile communication by receiving an up-link signal for a different base station
In each radio base station of a cellular mobile communication network in which a mobile station is communicative with the radio base stations through a time division multiplex radio link, a...
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5469467 |
Method for synchronizing the reference frequency oscillator of a metallic-based microcell to a master oscillator
The present invention involves a device for synchronizing the broadcast frequency of a base station and a microcell linked together by a metallic medium as well as a method for using the device to...
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5450394 |
Delay monitoring of telecommunication networks
Novel techniques are disclosed for continuously monitoring parameters of delay between two nodes in a telecommunication network such as an ATM or frame relay network. The techniques use measurement...
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5440556 |
Low power isochronous networking mode
A data communication system, such as a local area network, is provided with a capability of transmitting isochronous data. The system conveys both isochronous data and non-isochronous data by...
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5406559 |
Isochronous link protocol
A data transfer delay compensation system for a data communications system having a first transceiver and a second transceiver wherein the first transceiver includes circuitry for transferring an...
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5402424 |
Synchronization of clocks in a satellite communication network by preassigning constants to stations of the network
In a satellite communication network, a reference station simultaneously announces a reference time of a reference clock once in a predetermined duration of time to all terrestrial stations of the...
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5381408 |
Packet transmission system
A packet transmission system in which variable delays are compensated for by packetizing an input signal so as to produce packets at a predetermined packet frequency (3), allocating a sequence...
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5363373 |
Digital mobile station using presettable timeslot counter for compensating for propagation delay time
In a TDMA cellular mobile communications system, a mobile station receives a TDM signal from a cell site and detects a sync, a timeslot assignment signal and a signal indicating the propagation...
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5317571 |
Method for determining the transmission time between remote and central terminal stations in a point-to-multipoint bidirectional transmission network
A method for determining the transmission time between remote terminal stations and a central terminal station in a point-to-multipoint bidirectional transmission network. The central station...
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5293380 |
Frame synchronization system among multiple radio base stations for TDMA digital mobile communications system
A TDMA digital mobile communications system prevents TDMA frame synchronization from being asynchronous among radio base stations when a communication held by a mobile station is handed over from...
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5245634 |
Base-site synchronization in a communication system
A central-site (100) has located within it a synchronization system for purposes of backing-up a GPS external synchronization system. The central-site (100) is coupled to a plurality of base-sites...
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5228029 |
Cellular TDM communication system employing offset frame synchronization
An RF cellular TDM communication system employing offset frame synchronization between cells, any cell being omni-directional or directional, such that a frame at one cell is offset by an integral...
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5128925 |
Process for the pseudo-synchronization of a time multiplexing communication network and uses thereof
A process for the pseudo-synchronization of a time multiplexing communication network comprises the steps of measuring a time shift TM in reception by a mobile station of synchronization signals...
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5105439 |
Delay equalization detector
An improved method for detecting that a facility delay has changed is provided. According to the invention, a facility having a delay that may change is coupled to a transmitter and a receiver. The...
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5072445 |
TDMA satellite communications system operating in wide and narrow aperture modes for receiving bursts of various timing deviations
In a satellite communications system, a time slot assignment signal and a reference timing signal are transmitted from a central station to terminal stations to allow them to send bursts on...
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4993026 |
Multiplexer apparatus with auxiliary synchronization for compensating for cable delays
A multiplexer apparatus enables operation in a frame-phase synchronized manner regardless of delays which arise from differences in length of electrical cables that connect respective synchronizers...
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4937819 |
Time orthogonal multiple virtual dce for use in analog and digital networks
Apparatus and method for time division multiple access in a multidrop system with multiple host applications employing half-duplex polled protocols is disclosed. Ranging with respect to time is...
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