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JPH08289353A |
PURPOSE: To reduce the degradation of the service quality by switching the control channel, where a fault occurs, to an unused channel and switching it to a disconnected channel after previous notice of disconnection and automatic reconn...
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JP2545824B2 |
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JP2547126B2 |
PURPOSE:To efficiently apply various TDMA systems to mobile object communication. CONSTITUTION:For such a TDMA mobile object communication terminal 1 to be used by a speaker while moving, an SC processor 5 to compound control information...
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JPH08275242A |
PURPOSE: To allow a radio equipment to selectively connect a mobile equipment to plural wired channels with different channel system. CONSTITUTION: Each control signal with a radio frequency f1 (f2, f3) corresponding to plural wired chan...
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JPH08274741A |
PURPOSE: To provide an infrared ray multiplex transmission system and infrared ray reception device which never leaks a transmitted signal to the outside from a specific area, has no possibility of interference with signals outside the a...
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JPH08265310A |
PURPOSE: To prevent additional information from not being received due to channel switching without providing a channel dedicated for additional information by applying time division multiplex to control information in common to each cha...
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JPH08265836A |
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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JPH08251651A |
To perform effective allocation of time slots in a base station by storing information rejected slots and checking slots in a prescribed sequence. A portable radio telephone 5 performs two-way radio communication with either of base stat...
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JPH08251132A |
PURPOSE: To shorten time required for the line allocation of a call designating a specified line. CONSTITUTION: A radio communication controller 100, a moving station 101 and a moving station 102 are provided. The radio communication con...
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JPH08251230A |
PURPOSE: To enlarge the scale of the network system without increasing the number of wavelengths. CONSTITUTION: Nodes 101 arranged in the grid of 8×8 are divided into four groups G1-G4. Respectively different transmission wavelengths λ...
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JPH08228186A |
PURPOSE: To efficiently suppress the maximum value of signals by obtaining the amplitude of time discrete signals respectively obtained by plural inverse FFT means and selecting and transmitting discrete time signals for which the maximu...
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JP2507420B2 |
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JPH08149138A |
PURPOSE: To provide a communication circuit in which the load of a CPU caused by processing of identifier is relieved by providing the CPU receiving a selected message and applying prescribed processing to the message and forming a selec...
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JPH08149176A |
PURPOSE: To provide a demodulator whose circuit scale is not considerably increased even in the data transmission system of the multi-carrier transmission system requiring many numbers of subcarriers by providing a means conducting inter...
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JPH08130525A |
PURPOSE: To provide a frequency information transmitting equipment capable of obtaining highly accurate frequency information on a receiving side by the use of a compact circuit. CONSTITUTION: The frequency information transmitting equip...
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JPH08130766A |
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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JPH0831830B2 |
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JPH08502868A |
(57) The method and the means of multiplexing two or more signals by Hazama of the signal terminal (17 or 29) of summary plurality and two or more selected radio cycle channels are offered. This method includes the stage for carrying out...
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JPH0884128A |
PURPOSE: To evade a competitive access at the time of complementing a line by allocating a control band to each subscriber. CONSTITUTION: A master-slave communicating band and a master-slave controlling bands are formed in a frequency ba...
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JPH08501675A |
(57) Digital information Nagare's degree of validity and position which are transmitted on of the channels of summary a large number] one and which a large number multiplexed Version number, a comprehensive channel map including number s...
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JPH0823318A |
PURPOSE: To obtain data transmission with less transmission delay by using one kind of block identification code and one kind of block code for the transmission of data. CONSTITUTION: Input data are divided into the unit of 22 bytes at a...
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JPH0823574A |
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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JPH0823323A |
PURPOSE: To reduce a all loss rate of a high speed call in the multi-carrier hopping TDMA communication system. CONSTITUTION: When a call takes place, the system selects to the extent possible an idle channel so as not to select an idle ...
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JPH07327006A |
PURPOSE: To improve the data transmission efficiency and to prevent the throughput and the system efficiency from being reduced without accompanying complicated configuration of a communication equipment with respect to the increase in n...
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JPH07307716A |
PURPOSE: To provide a circuit for realizing frequency hopping in a time-division multiple access system. CONSTITUTION: A microprocessor 21 decides a frequency to be transmitted and received in a specific multi-address communication frame...
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JPH07307719A |
PURPOSE: To provide an optical network capable of handling signals of different transmission speed. CONSTITUTION: Time division multiplexing devices 2-1 to 2-n perform time division multiplexes for plural input signals inputted in parall...
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JPH07303079A |
PURPOSE: To provide a miniaturized and effective noise preventing circuit for a portable telephone set. CONSTITUTION: Concerning the noise preventing circuit for portable telephone set to communicate with a communication channel designat...
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JPH07303090A |
PURPOSE: To provide a system and a method for optimizing the usage of a communications transmission media. CONSTITUTION: In order to generate time-frequency slices to be assigned to various access rates and user's application requirement...
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JPH07297804A |
PURPOSE: To provide a synthesizer assigning method for channel switching which is stably operated by making the same channel use the same synthesizer. CONSTITUTION: With respect to the synthesizer assigning method for channel switching w...
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JPH07101865B2 |
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JPH0799815B2 |
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JPH07221728A |
PURPOSE: To form the signal multiplex transmission system in which an identification signal is sent in a time slot only used for sending a main signal with respect to the signal multiplex transmission system where an analog signal such a...
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JPH07221738A |
PURPOSE: To provide a method for transmitting and switching packets in an optical communication network by which synchronized time division multiplexing can be realized. CONSTITUTION: Packets C1, C2, C3, and C4 are transmitted at a presc...
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JPH07212342A |
PURPOSE: To reduce the spurious waves generated by the switching of a local oscillator. CONSTITUTION: In the transmission circuit of a radio telephone system performing communication by a time division, an attenuator 5 where the attenuat...
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JPH07193611A |
PURPOSE: To obtain the delay time adjustment circuit transmitting correctly a data signal string of other carrier even when an error takes place in any carrier when the data signal string of STM-N frame configuration on which plural poin...
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JPH07193525A |
PURPOSE: To make a terminal station to always be subordinate to a nearby repeater station whose reception level is the highest by sequentially comparing the reception levels of transmission synchronizing signals from the respective repea...
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JPH07183866A |
PURPOSE: To miniaturize a transmitter/receiver and to reduce cost by preventing the increase of the peak factor of a transmission carrier due to the centralization of synchronizing symbols having the maximum amplitude shift amount of eac...
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JPH07506711A |
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JPH07162940A |
PURPOSE: To stably continue communication without receiving interference from another radio system by dividing frame time longer than carrier sense time into short sub frame times. CONSTITUTION: Data for communication are transmitted in ...
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JPH07154363A |
PURPOSE: To improve transmission delay characteristics by utilizing a tone signal at a different frequency as a request signal. CONSTITUTION: Frequencies f1-f4 and the tone signal for request with a slot number (k) are assigned to miniat...
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JPH0752867B2 |
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JPH0752866B2 |
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JPH0744512B2 |
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JPH07111482A |
PURPOSE: To attain frequency stabilization quickly after channel changeover by applying automatic frequency control with other frequency and storing the result for a period when a required signal is not received. CONSTITUTION: A signal i...
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JPH0799483A |
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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JPH0728273B2 |
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JPH0766798A |
PURPOSE: To make it possible to separate a sub-information signal even at the time of optionally changing a set speed by a main station in a system consisting of the main station having a function capable of setting up plural kinds of sp...
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JPH0722277B2 |
A method and apparatus for use in a digital radio transmission system comprising stationary radio stations arranged in a cellular network and to which are assigned a plurality of mobile radio stations. Transmission of digital messages fr...
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JPH0746211A |
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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JPH06326683A |
PURPOSE: To eliminate the need of receiving burst number informing signals and level measurement timing signals from a terminal equipment and to reduce the number of signal lines between the terminal equipment and an automatic level cont...
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