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41. 发明专利

JPH0946344A PACKET FLOW RATE MONITOR AND CONTROL SYSTEM 失效
公开(公告)号：JPH0946344A
公开(公告)日：1997-02-14
申请号：JP18913495
申请日：1995-07-25
申请人： FUJITSU LTD
发明人： NAKAMICHI KOJI , KAWASAKI TAKESHI , ISHIHARA TOMOHIRO , SOMIYA TOSHIO , OKUDA MASAHITO , KUSAYANAGI MICHIO , WATANABE NAOAKI , KATO MASABUMI
IPC分类号： H04Q3/00 , H04L12/28 , H04L12/813 , H04L12/823 , H04L12/917
摘要： PROBLEM TO BE SOLVED: To monitor and control a data flow rate in a communication service changing the transmission permission rates of respective connections in accordance with a network using state. SOLUTION: A peak cell rate(PCR) of each connection is set up in a 1st UPC mechanism 31 as a monitor rate. When the transfer rate of a cell flowing from a transmitting terminal into the network through a certain connection exceeds a PCR set up for the connection, the cell is canceled. An allowed cell rate(ACR) of each connection is set up in a 2nd UPC mechanism 34 as a monitor rate. When the transfer rate of a cell flowing from the transmitting terminal to the network through a certain connection exceeds the ACR set up for the connection, processing for lowering the priority of the cell is executed.

42. 发明专利

JPH0879253A ATM EXCHANGE PROVIDED WITH MULTI-CASTING FUNCTION 失效
公开(公告)号：JPH0879253A
公开(公告)日：1996-03-22
申请号：JP20656194
申请日：1994-08-31
申请人： FUJITSU LTD
发明人： WATANABE MIWAKO , KAWASAKI TAKESHI , KATO MASABUMI , KATO TSUGIO , SOMIYA TOSHIO , AMANO MITSUHARU , NAKAMICHI KOJI
IPC分类号： H04Q3/00 , H04L12/18 , H04L12/28
摘要： PURPOSE: To provide various ATM exchanges provided with a multi-casting function. CONSTITUTION: Header converters 111 -11N provided in incoming highways #1 in-#Nin add tag information for specifying plural outgoing highways #1out-#Nout to inputted ATM cells, replace VCIs with internal identifiers and perform output. A switching part 12 routes the ATM cells to the plural outgoing highways based on the tag information of the ATM cells and the header converters 131 -13N provided in the respective outgoing highways convert the internal identifiers of the ATM cells to the normal VCIs and perform transmission (an internal copying system). Also, a copy server 331 is provided, plural copy cells are outputted by the copy server, one copy cell is recursively returned to the copy server, the remainder is transmitted to the outgoing highways and the copy cells are recursively routed to the copy server 331 until the required number of the copy cells are multi-casted (a recursive copy type trunk system).

43. 发明专利

JPH07327033A CELL TRANSMISSION CONTROL METHOD AND CELL TRANSMISSION CONTROLLER 失效
公开(公告)号：JPH07327033A
公开(公告)日：1995-12-12
申请号：JP11863194
申请日：1994-05-31
申请人： FUJITSU LTD
发明人： KAWASAKI TAKESHI , KAMOI EDAMASU
IPC分类号： H04Q3/00 , H04L12/28 , H04L12/815 , H04L12/863
摘要： PURPOSE:To attain detailed control in response to an information rate by implementing cell transmission control at a peak rate for a rate of (2nd parameter)/(1st parameter) with respect to an equipment processing rate to utilize effectively a statistic multiple effect and selecting a rate to be controlled at an equal interval thereby facilitating a band management. CONSTITUTION:A cell transmission period arithmetic unit 14 uses a 1st parameter T and a 2nd parameter X having information set to a value less than the 1st parameter T and resulting from one cell processing time to conduct desired arithmetic operation to obtain a cell transmission time. Then the cell transmission period arithmetic unit 14 is provided with a parameter counter 14-1 and a cell transmission time arithmetic means 14-2. A cell transmission controller 15 controls the transmission timing of a cell from a cell buffer 12-2 to implement cell transmission control of a peak rate at a rate of S/T with respect to the processing rate of an ATM equipment 13 based on the arithmetic operation result by the cell transmission period arithmetic unit 14.

44. 发明专利

JPH06276209A TRAFFIC SHAPING DEVICE FOR ATM NETWORK 失效
公开(公告)号：JPH06276209A
公开(公告)日：1994-09-30
申请号：JP5992593
申请日：1993-03-19
申请人： FUJITSU LTD
发明人： KAWASAKI TAKESHI , KATO MASABUMI , MUKAI HARUO
IPC分类号： H04L12/815 , H04L12/863 , H04L12/48
摘要： PURPOSE:To provide a traffic shaping device of a simple constitution which can perform the traffic shaping operation with high efficiency in an ATM network where plural VPs or VCs are handled. CONSTITUTION:An ATM cell memory 1 is provided to temporarily store the cell to be supplied to an input line 5 until it is ready to be sent, together with an output timing deciding part 2 which decides the time when the input cell is sent out of a VP or VC, a read control memory 3 which stores the cells that are sent at each time, and a clock part 4 which shows the present time. Then the input cell is written in the memory 1 and at the same time the part 2 decides the time when the cell is sent out from the present time that is decided by the characteristic or the history set in response to the VP or VC. Then the cell read-out information is written in the memory 3 to read out the cell corresponding to the decided time. A readable cell is detected out of the memory 3 based on the present time information of the part 4. Then the detected cell is read out of the memory 1.

45. 发明专利

JPH06152628A CELL BUFFERING DEVICE 失效
公开(公告)号：JPH06152628A
公开(公告)日：1994-05-31
申请号：JP29454892
申请日：1992-11-02
申请人： FUJITSU LTD
发明人： NISHI TETSUYA , MUKAI HARUO , KAWASAKI TAKESHI , KUROYANAGI TOMOJI
IPC分类号： G06F5/14 , G06F5/06 , G06F13/00 , H04L12/28 , H04L13/08 , H04L12/48
摘要： PURPOSE:To write cells to a buffer of an FIFO memory up to the full capacity of the buffer by inhibiting read of the cells when a dummy cell frame is identified from a cell frame read from the FIFO memory. CONSTITUTION:A full flag generation/release means 2 generates a full flag when a buffer capacity of an FIFO memory 1 is fully occupied and releases the full flag when prescribed cell data are read out of the memory 1. A dummy cell frame generation means 3 generates a dummy cell frame in response to the release, and a write inhibit/enable signal generation means 4 gives a write enable signal of the dummy cell frame to the memory 1. When a cell frame identification means 5 detects a dummy cell frame while one cell is read out of the memory 1, a read inhibit means 6 inhibits the read of one cell after the dummy cell frame is detected. Thus, the cells are written up to the full buffer capacity of the FIFO memory.

46. 发明专利

JPH05136814A CELL COPY DEVICE IN ATM NETWORK 失效
公开(公告)号：JPH05136814A
公开(公告)日：1993-06-01
申请号：JP30004191
申请日：1991-11-15
申请人： FUJITSU LTD
发明人： KAWASAKI TAKESHI , NISHI TETSUYA , TAKECHI RYUICHI , MUKAI HARUO , HAYAMI SHICHIRO , HAJIKANO KAZUO
IPC分类号： H04L12/18
摘要： PURPOSE:To reduce hardware quantity and to make constitution simple in a cell copy device in an ATM network at the time of executing multiple address communication. CONSTITUTION:The cell copy device 20 copying plural cells in the ATM network and a copy controller 30 deciding a copy destination based on information from a call processing part are provided. The copy controller 30 reads copy information included in the cell from the cell copy device 20 and decides an output destination. The cell copy device 20 gives and outputs output destination information which are sequentially outputted by the number of copies to the cell.

47. 发明专利

JPH04189048A QUALITY CLASS CONTROL SYSTEM IN ATM EXCHANGE 失效
公开(公告)号：JPH04189048A
公开(公告)日：1992-07-07
申请号：JP31914790
申请日：1990-11-22
申请人： FUJITSU LTD
发明人： SOMIYA TOSHIO , KAWASAKI TAKESHI , ABE SHUNJI
摘要： PURPOSE:To improve the traffic control by setting a line of a channel and reading a data based on the service in which quality classes are provided, with respect to the priority of a class. CONSTITUTION:After a quality class is received by a call control reception control section of a call processing unit 25, the call processing unit 25 implements the control such that a tag representing a path taking a route with high priority and a VCI after conversion are set to an address corresponding to the VCI in a VCI conversion table 210. When information of high priority service is inputted, the information is sent to a high priority SRM 221, an SRM 223 calls a cell to be outputted with priority and an SRM with low priority is selected and the cell is called sequentially.

48. 发明专利

JP2002318741A METHOD AND DEVICE FOR DISTRIBUTING LOAD 失效
公开(公告)号：JP2002318741A
公开(公告)日：2002-10-31
申请号：JP2001124827
申请日：2001-04-23
申请人： FUJITSU LTD
发明人： KAWASAKI TAKESHI , YAMADA HITOSHI
IPC分类号： G06F15/177 , G06F9/50 , G06F13/00 , H04L12/701 , H04L12/803 , H04L29/06 , H04L29/08 , H04L12/56
摘要： PROBLEM TO BE SOLVED: To provide a method and a device for distributing load, with which packets can be distributed to the links or servers of distribution destinations as uniformly as possible in proportion to a weight value at arbitrary time. SOLUTION: The weight value of distribution and the cumulative value or integrated value corresponding to the distribution are held for each distribution destination and when a distribution event occurs, a received packet is distributed to the distribution destination having a minimum quotient obtained by dividing the cumulative value with the weight value or a minimum integrated value. Thus, the packets can be distributed to the respective distribution destinations as uniformly as possible in proportion to the weight value at arbitrary time.

49. 发明专利

JPH1079750A FEEDBACK CONTROL METHOD AND DEVICE IN ATM EXCHANGE 失效
公开(公告)号：JPH1079750A
公开(公告)日：1998-03-24
申请号：JP3885497
申请日：1997-02-24
申请人： FUJITSU LTD
发明人： NAKAMICHI KOJI , SOMIYA TOSHIO , KAWASAKI TAKESHI , KAWARAI KENICHI , WATANABE NAOTOSHI , KUSAYANAGI MICHIO
IPC分类号： H04Q3/00 , H04L12/26 , H04L12/801 , H04L12/815 , H04L12/841 , H04L12/911 , H04L12/923 , H04Q11/04 , H04L12/28
摘要： PROBLEM TO BE SOLVED: To provide a concrete ABR control function to realize an ABR (available bit rate) service in an ATM exchange system. SOLUTION: A subscriber line processing unit 106 is provided with a function to calculate a cell round delay time based on a time till a cell is reflected in a terminal equipment and returned. A congestion detection function is provided to a switch section 101 or a multiplexer/demultiplexer 108, a rate calculation means 104 calculates a transmission rate corresponding to an outgoing path and writes it to a cell and a rate revision means 105 changes properly the transmission rate depending on a degree of occurrence of congestion. Furthermore, the rate revision means 105 measures number of communicating connections and predicts the number of the communicating connections possibly in existence for a prescribed time based on the number of the communicating connections in a time shorter than the prescribed time by means of a prescribed method. Furthermore, a coefficient is decided based on the predicted number of the communicating connections and the actual number of the communicating connections and the number of the communicating connections is predicted for succeeding prediction to be a more proper number by using the coefficient.

50. 发明专利

JPH09214499A CELL FLOW RATE CONTROLLER 失效
公开(公告)号：JPH09214499A
公开(公告)日：1997-08-15
申请号：JP1545296
申请日：1996-01-31
申请人： FUJITSU LTD
发明人： KAWASAKI TAKESHI , WATANABE NAOSATO , SOMIYA TOSHIO , WATANABE MIWAKO , NISHI TETSUYA , NAKAMICHI KOJI
IPC分类号： H04Q3/00 , H04L12/28
摘要： PROBLEM TO BE SOLVED: To efficiently transmit cells without exceeding the limit of a band parameter by integrally controlling peak cell rate(PCR) and sustainable cell rate(SCR) on a cell transmission-side. SOLUTION: A band control part 4 judges the transmission time of the cell in a buffer 1 based on the band parameter and cell transmission history and indicates the transmission of the cells to a read control part 3. The read control part 3 reads the cells from the buffer 1 in accordance with an indication from a band control part 3 and transfers them to the cell transmission part of a cell transmission device. The most efficient cell transmission control for satisfying the conditions of PCR control and SCR control becomes possible in the transmission-side from a terminal to a network or a transmission-side from the network to the other network. Thus, cell abolishment caused by the judgment of non-conformity by an UPC/NPC(usage parameter control/network parameter control) function at the entrance of the network in a transmission destination can be prevented. Since PCR control and SCR control are integrated, buffers for accumulating the cells are not necessary to be separately provided, and the quantity of hardware can be reduced.

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