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JP2007521766A |
Embodiments of the present invention comprise methods and systems for establishment and modification of network allocation parameters.
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JP2007516662A |
Embodiments of the present invention comprise methods and systems for establishment and modification of network allocation parameters.
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JP2007143070A |
To realize fail soft processing for preventing the overall function from stopping by covering partial components with other components, even when a fault occurs regarding a part of the components.A power line communication system in whic...
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JP3851202B2 |
To provide a radio communication device in which transmission efficiency of an entire system is improved and power consumption is reduced. The radio communication device is provided with a radio resource management part 4, a mapping part...
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JP3840617B2 |
A telecommunications network including a CDMA system and FDMA/TDMA system, both operating in a common frequency range, is disclosed. In an embodiment of the invention, the transmission and reception of narrowband FDMA/TDMA signals on a p...
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JP3796899B2 |
To allow a tuner to simultaneously receive broadcast radio waves at different frequency bands. Data P are blocked at a prescribed time interval and compressed on time base at the prescribed time interval at a circuit 10a. The compressed ...
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JP3726232B2 |
This invention relates to data transmission in a microwave link system particularly through point-to-multipoint connections. The arrangement according to the invention utilizes both frequency and time division duplex arrangement to simpl...
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JP3703495B2 |
A filter fast Fourier transmultiplexer divides a multi-channel communication signal into single channel communication signals through a cascade of filters and mixers. The output sample rate is maintained at the input sample rate and memo...
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JP2005522963A |
A physical layer transport composite processing system used in a wireless communication system. A plurality of interconnected processing blocks are provided. The blocks are interconnected by a read data bus, a write data bus and a contro...
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JP3662321B2 |
To improve the quality of fast data transmission under multi-path phasing. In an equipment on the side of a base station 1 and the equipment on the side of a mobile station 21 using a TDD(time division duplex) system, a serial/parallel c...
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JP2005094263A |
To provide an economical optical remote system for fixed wireless communication.Optical transmitters 181 to 183 convert a downlink wireless electric signal from modulators 171 to 173 into downlink optical signals with a wavelength interv...
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JP2005045360A |
To solve the problem of the conventional time division multicarrier communication apparatus having many signal processing sections that require many LEDs for state indication.Each of multi-carriers is provided with a carrier dependent bu...
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JP3595332B2 |
To provide an optical communication system capable communication having a small delay rate, a small discard rate and a high throughput by using a network which uses a wavelength division multiplexing and a time division multiplexing in c...
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JP3595331B2 |
To provide an optical communication system capable communication having a small delay rate, a small discard rate and a high throughput by using a network which uses a wavelength division multiplexing and a time division multiplexing in c...
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JP3547885B2 |
A portable radio telephone (5) communicates with base stations (1, 2) in a digital radio telephone system, such as DECT, employing TDMA transmission. The portable radio telephone is programmed with an algorithm which is operative to sele...
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JP3548387B2 |
To continue communication with equivalent transmission capacity as mush as possible even if a fault, etc., occurs by providing a switching means, etc., which switches the communication slot to other communication slots when it is decided...
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JP3532424B2 |
To effectively use band width, which can be used in a radio communication network and which is restricted by giving band width by on-demand and efficiently deciding a transmission level required for up link data transmitting between resp...
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JP3516972B2 |
PURPOSE: To implement communication with a high throughput and to realize a multiple address/multi-cast function by providing a network controller controlling centralizingly allocation of a time slot to plural nodes so as to use the netw...
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JP3503723B2 |
To surely attain automatic identification of a transmission mode by delaying a base band signal by different delay times depending on a plurality of transmission modes and calculating a correlation between the base band signal and each d...
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JP3505329B2 |
To provide a base station for mobile object communication system with which the increase of cost is suppressed in a simple configuration and much more simultaneous connecting processes can be performed while keeping communication quality...
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JP3482174B2 |
To provide a load omission system which reinforces the up-link margin between a ground terminal and a satellite for a satellite-based communication system. The ground terminal 14 includes a multicarrier network 40 which is able to operat...
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JP3464311B2 |
PURPOSE: To avoid reflection, to prolong distance and to realize high speed digital transmission by forming specified pair lines which is composed of branch lines into a pair lines by means of a branch line branching filter and connectin...
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JP3452869B2 |
To obtain a device and method for carrier conversion which generate many dummy carriers by one carrier generator. This carrier converting device generates one of many forward dummy carrier signals selectively by using a dummy carrier gen...
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JP3444901B2 |
The invention relates to a method and a device for digital data radiotransmission between a fixed station ( 1 ) and at least one mobile station ( 2, 3 ) at one or several carrier frequencies (F 1 , F 2 . . . ), wherein the data is transm...
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JP2003244756A |
To provide a wireless communication system capable of enhancing the frequency utilizing efficiency through the utilization of the FDMA/TDMA and assigning a time slot with a different length depending on an information signal to a destina...
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JP3393954B2 |
PURPOSE: To simplify the circuit configuration by decreasing number of oscillators in the time division multiplex FDD radio equipment and the time division multiplex FDD/TDD dual mode radio equipment. CONSTITUTION: A converter 6 mixes a ...
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JP3391291B2 |
To facilitate a routing operation in an optical wave network and to realize a high speed transfer processing by permitting an optical wave access network to convert the user packet of a terminated layer into the light wave adaptation lay...
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JP3359002B2 |
To attain power saving in the case of controlling transmission power while keeping isolation of an output circuit. In the case of conducting transmission from an antenna 1 under a condition of 900 MHz, 2 Watts in compliance with the glob...
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JP3329821B2 |
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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JP3306760B2 |
PURPOSE: To provide demultiplexing circuit which can be applied to the variation of traffic derived from changes of both the number of channels and the band width and utilizes a polyphase network. CONSTITUTION: Frequency multiplexed carr...
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JP2002204483A |
To provide a subscriber RF telephone system that uses FDMA/TDMA to enhance the frequency utilizing efficiency.Using wireless digital time division multiplex transmission circuits between a base station and a plurality of fixed or mobile ...
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JP3258615B2 |
To perform plural communications that have different routes by switching to communication that uses a 2nd communication frame in response to a communication request from a 2nd communication device, continuing communication that is perfor...
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JP3253973B2 |
Method and system for improving the degree of utilization of telecommunication channels in locally concentrated asynchronous wireless telecommunication systems wherein, in each telecommunication system, for a first telecommunication conn...
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JP2001358691A |
To eliminate a state, where successive slots cannot be secured even though free slots are available when free slots are allocated at random.When another communication device 10 makes a request to allocate slots, the slot allocating metho...
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JP3228055B2 |
PURPOSE: To allocate plural slots efficiently by allocating again a slot based on the end of an optional call and reserving idle slots for plural slots used highest in same frequencies. CONSTITUTION: In the radio communication system emp...
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JP3215018B2 |
PURPOSE: To provide various kinds of mobile communication systems capable of selecting various kinds of systems corresponding to the priority of a user. CONSTITUTION: A mobile machine and a radio base station are provided with the commun...
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JP3186733B2 |
To attain the effective utilization of a frequency, improvement in the stability of operation, cost-down and improvement in performance by enabling the transmission of at least two-way simultaneous calls with prescribed band width. A pri...
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JP2001189960A |
To provide a digital wireless communication method and its system, that can attain voice communication with superior voice quality at a low cost. A wireless signal, sent through time slot assignment control by a TDMA/FDD system, is recei...
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JP3177481B2 |
To execute a larger number of simultaneous connecting processings while suppressing the rising of a cost and keeping a communication quality by providing a control means, etc., controlling a switch means and an interchanging means so as ...
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JP2001507896A |
The invention relates to a method for a duplex telecommunication connection in radio connections based on a frame-structured interactive communication and a radio system where the frame-structured interactive communication is performed i...
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JP3162576B2 |
PURPOSE: To make common the synchronizing circuit of a mobile terminal to be used for both the microcell system of a TDMA/TDD system and the macrocell system of a CDMA/TDD system by making common the basic frame constitution of a transmi...
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JP2001506071A |
A method and system of adaptive channel allocation in a multi-carrier, multi-slot system 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. As co...
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JP3162409B2 |
In a mobile communication system, FDMA/TDMA signals, CDMA signals or TD-CDMA signals have a same time-slot and one signal shares a frequency in the time-slot. The system of a time-slot sharing and a frequency sharing has diversity receiv...
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JP2001086250A |
To prevent intermodulation from taking place by decreasing an input level to a degree not reaching a saturation level of a mixer and to attain long distance communication between a controller and each terminal. In this interphone system,...
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JP2001502150A |
A radio system and a channel allocation method in a radio system are provided. The radio system and method have at least one base station communicating with terminals within a coverage area thereof. Air interface resources are allocated ...
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JP3127280B2 |
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JP2000517486A |
A satellite direct audio broadcast system includes a plurality of fixed-rate, uniform, frequency division multiple access ("FDMA") uplinks and a time division multiplexed ("TDM") downlink. Source audio channels may be divided among and t...
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JP3117001B2 |
To eliminate noises and discontinuity of data caused by unnecessary data interpolation when data is interpolated to prevent data slip due to the deviation of more than one different sampling frequencies. This device has a signal processi...
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JP2000341575A |
To shorten control time, to reduce circuit scale and to effectively utilize a carrier wave band by respectively transmitting a video signal through an analog modulation frequency multiplexing system and an audio signal or data signal thr...
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JP2000515698A |
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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