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11. 发明专利

JP2002064545A NETWORK QUALITY MANAGEMENT METHOD AND DEVICE 失效
公开(公告)号：JP2002064545A
公开(公告)日：2002-02-28
申请号：JP2000246424
申请日：2000-08-15
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： MATSUDA TAKAO , HIRANO YOSHITAKA
IPC分类号： H04L12/70 , H04L12/66 , H04L12/56
摘要： PROBLEM TO BE SOLVED: To provide a network quality management method and device that can collect various sets of quality information by each communication call. SOLUTION: A quality management packet generating section 13 generates a Ping packet and a Trace Route packet and transmits them to a communication terminal together with a voice packet, a quality management packet analysis section 18 generates quality information by each communication call on the basis of the Ping packet and the Trace Route packet looped back from the communication terminal, RR(Receiver Report) and SR(Sender Report) packets received from the communication terminal, the number of transmitted packets counted by a transmission packet number count section 15, and a measurement result by a voice packet quality measurement section 17 and a quality information management section 19 stores and manages the quality information.

12. 发明专利

JP2001203755A SYSTEM AND METHOD FOR SWITCHING SYSTEM 失效
公开(公告)号：JP2001203755A
公开(公告)日：2001-07-27
申请号：JP2000011456
申请日：2000-01-20
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： MATSUDA TAKAO , YASUDA SHINJI , HIRANO YOSHITAKA
IPC分类号： H04L1/22 , H04L12/28 , H04L12/70 , H04L12/713 , H04L29/14 , H04Q3/00 , H04Q3/545 , H04Q11/04 , H04L12/56
摘要： PROBLEM TO BE SOLVED: To reduce information peculiar to a control link, which is transferred to a standby system communication controller from an active system at the time of switching the system of a communication controller and to shorten transfer time. SOLUTION: Takeover information extraction parts 115 and 118 are installed in communication controllers 100 and 107. Only control link information during an operation is extracted from a control link takeover table 114 stored in the storage device 103 of an active system. Information is transmitted to a takeover information transmission processing part 102 and it is transferred to a takeover information reception processing part 108 of a standby system from the transmission processing part 102. A takeover table generation part 117 stores the table transferred to a storage device 109. Thus, one system communication controller 107 becomes the active system. As another method, in a system where the table is separated into the one for the subscriber and a repeating control link takeover table, only the other table may be transferred when one of the separated tables is not bally operated.

13. 发明专利

JPH0993251A DATA STREAM TRANSFER DEVICE 失效
公开(公告)号：JPH0993251A
公开(公告)日：1997-04-04
申请号：JP24267195
申请日：1995-09-21
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： KAWASHIMA MASAHISA , HIRANO YOSHITAKA
IPC分类号： H04Q3/00 , H04L12/28
摘要： PROBLEM TO BE SOLVED: To suppress the congestion of a network by sending information to the network in a form independently of an information occurrence time interval even in the communication required to store the information occurrence time interval between transmission and reception in the ATM communication network dividing stream information into plural cells for transmission and reception. SOLUTION: A transmitter side describes a production rate of information (SR: Source Rate) to a cell at proper time and a clock value (TS: Time Stamp) at transmission of the cell and describes information (SRF; SR Flag) representing whether or not the SR is to be described and information (TSF; TS Flag) representing whether or not the TS is to be described to each cell. The receiver side identifies a cell including the TS based on the TSF of the received cell and decodes the clock of the transmitter side based on the TS of the cell by the adaptive clock decoding method. Based on the SRF of the received cell, the cell including the SR is identified and when the cell including the SR is received, the SR is updated and the reception information is outputted by selecting an output rate to be the SR.

14. 发明专利

JPH08288949A INFORMATION TRANSFER SYSTEM 失效
公开(公告)号：JPH08288949A
公开(公告)日：1996-11-01
申请号：JP8659895
申请日：1995-04-12
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： KAWASHIMA MASAHISA , HIRANO YOSHITAKA
IPC分类号： H04L1/00 , H04L12/28 , H04Q3/00
摘要： PURPOSE: To reduce transfer of undesired information by providing a means adding an error correction cell, a means adding a sequential number, a means estimating whether a cell is an original information cell or the error correction cell and a means decoding a defective cell. CONSTITUTION: When only information by L cells is generated within a prescribed time, an error correction cell is generated and its transmission is started. The error correction coding to generate the error correction cell is conducted such that a dummy cell by (K-L) cells is added to original information by L cells, information of (n+M-1)th order is extracted from an n-th main information area from each of K sets of original information cells and an information string 14 whose length is (K×M) is generated. Then the information string 14 is given to an error correction coder 15 to generate a redundant information string 16 whose length is (N-K)×M to e added to the original string 14 is generated. The string 16 is the information from the n-th to the (n+M-1)th in a main information area of (N-K) sets of error correction cells to be sent. The processing above is conducted to all (n) in a memory 17 to generate an error correction cell 18.

15. 发明专利

JPH0879251A CIRCUIT AND METHOD FOR CONTROLLING CELL TRAFFIC 失效
公开(公告)号：JPH0879251A
公开(公告)日：1996-03-22
申请号：JP20564994
申请日：1994-08-30
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： HIRANO YOSHITAKA
IPC分类号： H04Q3/00 , H04L12/28
摘要： PURPOSE: To provide a circuit and a method for controlling cell traffic capable of coping with a small hardware amount even when the number of band management objects is increased by providing a means for counting the number of frames during transfer on a line and a buffer for storing cells constituting the frames and controlling the cell traffic on an output line so as to be within a stipulated value. CONSTITUTION: The numbers of the frames during the transfer for respective virtual channels(VCs) and as a whole are observed in a traffic observation part 16. Then, when the new frame arrives, whether or not the number of the entire frames during the transfer exceeds a maximum frame number N transferrable on the line and whether or not the number of the frames during the transfer of the VC exceeds a frame number M transferrable in a band stipulated beforehand are observed. Then, in the case of exceeding the stipulated value, an exceeding part is stored in a frame buffer part 14 by a frame transfer control part 13. In such a manner, the traffic is smoothed and the band is controlled for the respective VCs.

16. 发明专利

JPH0750671A GROUP ADDRESS PROCESSING SYSTEM 失效
公开(公告)号：JPH0750671A
公开(公告)日：1995-02-21
申请号：JP19351993
申请日：1993-08-04
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： USHIJIMA SHIGEHIKO , NORITAKE KATSUSHI , HIRANO YOSHITAKA
IPC分类号： H04L12/18 , H04L12/28 , H04L12/46 , H04L12/70 , H04L12/851 , H04L12/56
摘要： PURPOSE:To provide a group address processing system in which a multi-cast packet and a single cast packet can be simultaneously handled, and a packet exchange processing can be economically offered with little quality deterioration. CONSTITUTION:This system is equipped with an address classification identifying means 100 which identifies an address classification, holding means 400 which holds a packet, traffic observing means 200 which observes traffic amounts, and judging means 300 which judges whether or not the traffic amounts are beyond a constant value by comparing the traffic amounts with the constant value. Then, in a period in which the judged result is beyond a prescribed value, a processing related with a group address is stopped, the packet is held by the holding means 400, and when the observed traffic is less than the designated value, the processing is resumed.

17. 发明专利

JPH0730554A ADDRESS CONVERSION SYSTEM 失效
公开(公告)号：JPH0730554A
公开(公告)日：1995-01-31
申请号：JP17336693
申请日：1993-07-13
申请人： NEC CORP , NIPPON TELEGRAPH & TELEPHONE , HITACHI LTD , OKI ELECTRIC IND CO LTD , FUJITSU LTD
发明人： IKEDA HIROSHI , SUZUKI KOJI , HIRANO YOSHITAKA , MIYAGI MORIHITO , KOJIMA MITSUHO , NONAKA AKIHIRO , KIYONO NAOHISA
IPC分类号： H04Q3/00 , H04L12/28
摘要： PURPOSE:To reduce the required hardware quantity by generating an address being a sum of groups addresses for each group and executing header conversion through the use of the address. CONSTITUTION:This system is provided with a header extract section 6 extracting header information of an input cell a header conversion table 3 using a part of the information as address input and reading a header information after the conversion, and a header insert section 8 inserting the information after conversion as header information of the input cell. In this conversion method, when 2 sets of a group address numbers or less are limited, the group address conversion table 1 is provide with a table of n-bit in the input side and m-bit in the output side. Furthermore, when the individual address L-bit is not limited. (L+m) bits are outputted as a table address. When the individual address L bit has a limit and a specific bit among high-order p-bits is used, the (n+p) bits are used for the input of the table 1 as a group address.

18. 发明专利

JPH077753A CHANNEL DEVICE 失效
公开(公告)号：JPH077753A
公开(公告)日：1995-01-10
申请号：JP14774993
申请日：1993-06-18
申请人： HITACHI LTD , NIPPON TELEGRAPH & TELEPHONE , NEC CORP , FUJITSU LTD , OKI ELECTRIC IND CO LTD
发明人： KOBASHI ICHIRO , HORIE YOSHIHIRO , HIRANO YOSHITAKA , MINAMIMURA KEIZO , SUZUKI KOJI , TAKECHI RYUICHI , MUNAKATA KOICHI
IPC分类号： H04M3/22 , H04Q1/02 , H04Q3/52 , H04Q11/04
摘要： PURPOSE:To reduce the number of cables by accommodating a 1st selector mounting printed circuit board in a same nuit as a printed circuit board with a line correspondence section mounted thereon. CONSTITUTION:Signals from line correspondence sections 100-107, 110-117 are outputted to switch sections 200, 210 and signals from the line correspondence sections 100-107, 110-117 are outputted to inter-link sections 300, 310 by using a back wiring board printed wire of the line correspondence section 100 because the printed circuit board with the inter-link sections 300, 310 mounted thereon is accommodated in the line correspondence unit 00. Thus, when the output of signals from the line correspondence sections 100-107, 110-117 to the switch sections 200, 210 is executed by using a BWB printed wiring, one cable per one half system is enough to connect the units 00, 10 to output a speech signal from the inter-link sections 300, 310 to the switch sections 200, 210. Thus, the hardware quantity of the inter-link section connecting 0, 1 system of the line correspondence section is reduced.

19. 发明专利

JPH06338897A CELL NUMBER COUNTING METHOD AND CIRCUIT THEREFOR 失效
公开(公告)号：JPH06338897A
公开(公告)日：1994-12-06
申请号：JP12704393
申请日：1993-05-28
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： HIRANO YOSHITAKA , ITODA JUN
IPC分类号： H04Q3/00 , H04L12/28 , H04L12/48
摘要： PURPOSE:To highly precisely count the number of passing cells at every counting time zone without any error by a little hardware amounts without depending on the number of the counting time bands. CONSTITUTION:A cell number counting circuit 20 is equipped with A and B double surfaces count value tables 11 and 12, and a counting surface resistor (counting surface identifier) 13 which displays the counting surface in the time zone, so that the number of the passing cells at every time band is enabled to separately count. When the cell reaches, the count value of the counting surface shown by the counting surface identifier is increased by 1. The counting surface can be simultaneously switched for entire logical channels by rewriting the value of the identifier, and the number of the passing cells at every logical channel number can be counted separately at every logical channel without any error.

20. 发明专利

JPH04281644A TRAFFIC OBSERVATION CIRCUIT 失效
公开(公告)号：JPH04281644A
公开(公告)日：1992-10-07
申请号：JP6891091
申请日：1991-03-08
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： SHIOMOTO KOHEI , HIRANO YOSHITAKA
IPC分类号： H04L12/70 , H04L12/28 , H04Q3/00
摘要： PURPOSE:To attain accurate observation and detection of minimum cell arrival interval rule violation even when a timer counter is circulated once when a cell passing on a line of a communication network passes at a prescribed interval or over in which the information to be communicated is transferred while being divided in the unit of cells being fixed length packets. CONSTITUTION:The circuit is provided with a timer 22 counted up for each one-cell hold time, a means 21 storing a cell arrival time for each logic channel as a stored time stamp, a means 23 discriminating whether or not the cell arrival interval satisfies a specified value based on the time stamp and the timer value, and a means using the discrimination means 23 so as to discriminate whether or not the current time is deviated from the time stamp time by a specified value or over for a specific period of each logic channel independently of the presence of cell arrival with respect to each logic channel and displaying the result.

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