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WO/1998/024258A2 |
A method and system of adaptive channel allocation in a multi-carrier, multi-slot system (220) is provided. In the method and system a subset of M channels is chosen from a larger set of N channels available for communications on a link ...
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WO/1998/017077A2 |
The invention relates to a radio system and a channel allocation method in a radio system comprising at least one base station (300) communicating with terminals (308 to 314) within its coverage area (304), and in which method air interf...
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WO/1998/004055A1 |
A short-range wireless radio communications system is provided that can carry data, voice, or data and voice traffic simultaneously. The band is divided into a plurality of channels or hops, and a burst composed of either voice informati...
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WO/1997/049208A1 |
An improvement in a data communication link between a server site (160) and a client site (162). The server site transfers data packets to the client site, each data packet causing an acknowledgment packet to be sent from the client site...
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WO/1997/037455A1 |
A method for assigning communication resources includes assigning communication resources (216, 218, 220) in the nature of bandwidth according to various selection schemes based upon the type of communication service being provided, and ...
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WO/1997/033385A1 |
To avoid complex synchronization for locally concentrated, asynchronous, wireless telecommunications systems, a free, not yet occupied FDMA frequency is occupied with priority in each telecommunications system for a first telecommunicati...
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WO/1997/022189A1 |
A satellite direct audio broadcast system includes a plurality of fixed-rate, uniform, frequency division multiple access ("FDMA") uplinks (21) and a time division multiplexed ("TDM") downlink (27). Source audio channels may be divided a...
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WO/1997/012464A1 |
A method and apparatus for single signal, multiple channel digital information transfer through pulses with time slot allocation. The apparatus consists of one or more transmitting devices (1) and one or more receiving devices (16). Mult...
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WO/1997/012466A1 |
A method and apparatus for multiple frequency, multiple channel digital information transfer through time slot allocation. The apparatus consists of one or more transmitting devices (1, 4) and one or more receiving devices (16). Multiple...
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WO/1997/012465A1 |
A method and apparatus for single signal, multiple channel digital information transfer through pulses with time slot allocation. The apparatus consists of one or more transmitting devices (1) and one or more receiving devices (16). Mult...
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WO/1997/006618A2 |
A filter fast Fourier transmultiplexer (216) divides a multi-channel communication signal into single channel communication signals through a cascade of filters (304, 314, 348, 354, 360, 366, 404-418) and mixers (604-610). The output sam...
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WO/1997/002674A1 |
The invention relates to the formation of a wide-band data transfer link (WB) as an extension to a data transfer system, which comprises narrow frequency bands (f2) for the organization of narrow-band data transfer calls using one freque...
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WO/1997/002673A1 |
A multi-channel modulator for the transmission of telephony signals within a broadband communication system. A filter accepts digitized data streams of telephony information in the form of I and Q signal components, and filters them to p...
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WO/1996/036135A1 |
A message system (500) for transmitting a message to a subscriber unit (312). The messaging system (500) includes a plurality of geographically distributed messaging transmitters (302-310), each transmitter designed to transmit in a firs...
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WO/1996/034349A1 |
An airdisk (80) performs a TDMA/FDMA (Time Division Multiple Access/Frequency Division Multiple Access) wireless broadcast, divided into periodically-repeated time-slotted data items, analogous to sectors on a rotating disk, over multipl...
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WO/1996/021289A1 |
In a TDM/TDMA portable radio communications system (5), a portable handset (201) is compatible for operation in FDD mode and TDD mode. In the FDD mode, different frequencies are used to separate a downlink transmission to a portable (201...
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WO/1996/013917A1 |
A technique for transmitting wideband signals such as video signals over a communication system such as a cellular or Personal Communication System (PCS) which only has narrowband channels. The video signal is first digitalized and compr...
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WO/1996/007278A2 |
In for instance a radio based access network type DECT are powerful and simply built up network components, for instance repeaters, an integral part. The device is arranged to make possible a signalling which makes digital decoding and a...
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WO/1995/033313A1 |
This invention relates to a method for improving the audibility of a broadcast control channel of a base station (BTS1 to BTS3) in a radio system in which transceiver units have been divided on the TDMA/FDMA principle into channels, the ...
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WO/1995/027352A1 |
A high speed bidirectional cable transmission system for CATV and other television systems includes unidirectional transmission of video signals from a head end unit (10) to a plurality of transceivers or subscribers connected to a trans...
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WO/1995/019079A1 |
A radio access method for facilitating communication between at least one first station and a plurality of second stations is disclosed. First, each signal intended for transmission is buffered at a first station. The signals are then di...
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WO/1995/009496A1 |
The invention relates to a method for digital semi-duplex transmission between two radio units. To transmit reverse information, the method comprises the steps of transmitting a selected number (N-1) of speech or data blocks during a tim...
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WO/1995/008247A1 |
An optical communications system comprises an inner core network, a plurality of outer networks coupled to the core, and local networks coupled to the outer networks whereby to provide access to terminals coupled to the network. Informat...
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WO/1995/004415A1 |
A communication system includes a plurality of subscribers each of said subscribers having a transceiver including a transmitter (34) and a receiver (35, 36). In the system there are means (31) coupled to each of said transceivers to ena...
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WO/1995/002942A1 |
The availability and location of a multiplicity of multiplexed digital information streams, transmitted over one of a multiplicity of channels, are identified by transmitting a Global Channel Map which includes a version number, one Band...
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WO/1994/021061A1 |
An apparatus is provided for use in a multi-channel digital transmitter and receiver. A filtering process is accomplished by conditioning portions of a digitized signal during digital signal processing by integrating, taking the differen...
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WO/1994/011961A1 |
The invention relates to a method and an arrangement for dynamic allocation of multiple carrier wave channels for multiple access by frequency division multiplexing. The invention provides a number of mobile units with the possibility of...
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WO/1994/010772A1 |
A method and means are provided of transmultiplexing a plurality of signals between a plurality of signal terminals (17 or 29) and a plurality of selected radio frequency channels. The method includes the step of, and means for, frequenc...
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WO/1993/020628A1 |
In a wireless frequency and time division multiple access (FD/TDMA) communications system having time-slotted communications channels, there is provided a method of and apparatus for hopping wireless communications. It comprises sequenci...
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WO/1993/003558A1 |
A communication system having a site (42) employing a plurality of communication channels. Each channel is assigned a desired received signal strength threshold. A channel is assigned to a subscriber unit (43a, 43b) based upon the streng...
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WO/1992/016063A1 |
System for broadcasting and receiving digital data within time divisional multiplexed channels, grouped in frames, each frame comprising multicarrier symbols, including data symbols and system symbols, each symbol comprising a set of ort...
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WO/1992/008303A1 |
Data, for example, data over a traffic message channel, is transmitted over a radio data system by multiplexing across several available channels. Data is transmitted at intervals over each channel so that data is transmitted at differen...
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WO/1992/006546A1 |
An intelligent communications node (20) is capable of dynamically selecting frequency and time slot assignments for communications with remote communication devices (22, 24, 26) having different communication protocols including differen...
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WO/1992/006545A1 |
A device in which the frequency band (W) of a multiple carrier signal (MCS) is divided into a number K of sub-bands. The data contained in each sub-band are sampled at a predetermined rate (Sr) to generate a spaced sequence of samples. T...
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WO/1990/013956A1 |
A distributed intelligence network (10) using time and frequency domain multiplexing. On power-up, each node (20) determines its skew and requests downloading of program code and configuration data. A node claims timeslots by transmittin...
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WO/1990/008434A1 |
A communication system (Figure 2) that provides TDM and FDM communications between communication units (104). At least two control slots (403) are provided in each TDM frame window (Figure 4) to provide communication control information ...
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WO/1990/005417A1 |
Method for converting electronic signals from frequency-division multiplex (FDM format) into time-division multiplex (TDM format) while retaining substantially all signal information (amplitude and phase information) of a band-limited si...
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WO/1989/005071A1 |
Apparatus for converting a frequency division multiplex (fdm) signal to a time domain multiplex (tdm) signal in which a voltage controlled oscillator (21) whose output is a staircase of reference frequencies mixed by a mixer (20) with a ...
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WO/1981/003095A1 |
Digital Subscriber Communication System for transmitting voice or data information. Existing digital systems are primarily used to carry a large number of multiplexed voice transmission from one point to another. The purpose of this inve...
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WO/1979/000271A1 |
A FDM/TDM transmultiplexer uses sampling rate multiplication to increase the sampling rate for time division multiplexed (TDM) to frequency division multiplexed (FDM) conversion and decrease the sampling rate for FDM to TDM conversion. T...
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JP2022181709A |
To provide a broadcasting system capable of applying an optimum multiplexing method according to a service requirement condition.A transmitter 100 to be used in a broadcasting system 1 for performing hierarchical transfer comprises: mult...
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JP7012460B2 |
The base station performs radio communication of a time-division-duplex scheme with a terminal apparatus, using any of a plurality of channels included in each of a plurality of frequency bands, and includes: a channel selector that sele...
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JP7009532B2 |
A method according to an embodiment of the invention includes receiving and transmitting signals over an asymmetric time division duplex (TDD) communication path. Signals are sent over the asymmetric TDD communication path via a first po...
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JP6818431B2 |
Provided are a frame configuring unit configured to configure a frame using a plurality of orthogonal frequency-division multiplexing (OFDM) symbols, by allocating time resources and frequency resources to a plurality of transmission dat...
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JP6573963B2 |
The present disclosure relates to one or more techniques for enabling component carriers for multi-carrier wireless communication. A capability of a UE or base station to support more than five downlink component carriers may be identifi...
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JP2019520770A |
Embodiments of the present disclosure provide methods and devices for signal processing in fiber optic communication systems. This method comprises dividing an electrical signal for a plurality of receivers in a fiber optic communication...
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JP6440720B2 |
Disclosed are a D2D communication method and device. The method comprises: transmitting, by a transmitting-end device, a control message in a control region of a current communication frame, the control message at least comprising resour...
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JP6437904B2 |
A system and method of providing a modulated signal useable in a signal transmission system. The method includes transforming, perhaps with respect to both time and frequency, a data frame including a plurality of data elements into a tr...
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JP6421234B2 |
The present invention relates to a method for receiving a device-to-device signal of a terminal in a wireless communication system supporting frequency division duplex (FDD) band and time division duplex (TDD) band-based carrier aggregat...
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JP6411519B2 |
Method comprises determining a first HARQ timing wherein an association determines which UL subframes in the TDD carrier that are defined for transmitting HARQ on an UL control channel for an associated set of DL subframes in the FDD car...
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