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11. 发明专利

JP2010103815A Communication quality evaluation program, method and apparatus 有权
标题翻译：通信质量评估方案，方法和设备
公开(公告)号：JP2010103815A
公开(公告)日：2010-05-06
申请号：JP2008274154
申请日：2008-10-24
申请人： Fujitsu Ltd , 富士通株式会社
发明人： IMAI SATOSHI , FUJINO SHINJI , USHIKI KAZUMASA , KAWASAKI TAKESHI
IPC分类号： H04W24/06 , G08G1/09 , H04W4/04 , H04W74/08
摘要： PROBLEM TO BE SOLVED: To evaluate broadcast type CSMA/CA (Carrier Sense Multiple Access with Collision Avoidance) communication quality in a short time. SOLUTION: The number of terminals inside an overlapped region, the amount of packets to be generated per terminal, a first unit time and a probability of re-scheduling of packet transmission are used to calculate a first normalization traffic volume within the first unit time, and a desired wave transmission success rate is calculated using a predetermined statistic model. In a case where a region excluding the overlapped region from an interference area is divided into a plurality of divided regions in accordance with a CINR (Carrier-to-Interference noise ratio), the number of hidden terminals in each divided region, the amount of packets to be generated per terminal and a second unit time shorter than the first unit time by a DIFS (Distributed Coordination Function) time are used to calculate a second normalization traffic volume, for each divided region, that is incurred from the hidden terminals within the second unit time. The second normalization traffic volume for each divided region and a PER (Packet Error Rate) corresponding to CINR are used to calculate a packet error rate, thereby calculating a packet arrival rate that is a product of an interference avoidance rate, caused by the hidden terminals, calculated from the packet error rate and the desired wave transmission success rate. COPYRIGHT: (C)2010,JPO&INPIT
摘要翻译：要解决的问题：在短时间内评估广播类型CSMA / CA（具有冲突避免的载波侦听多路访问）通信质量。解决方案：重叠区域内的终端数量，每个终端产生的分组数量，第一单位时间和分组传输的重新调度概率被用于计算第一标准化业务量单位时间，并且使用预定的统计模型计算期望的波传输成功率。在根据CINR（载波对干扰噪声比）将来自干扰区域的重叠区域以外的区域划分为多个分割区域的情况下，每个分割区域中的隐藏终端的数量，使用通过DIFS（分布式协调功能）时间在每个终端生成的分组和比第一单位时间短的第二单位的时间用于计算对于每个划分的区域的第二归一化业务量，第二单位时间。使用与CINR相对应的每个划分区域的第二归一化业务量和对应于CINR的PER（分组差错率）来计算分组错误率，从而计算作为由隐藏终端引起的干扰避免速率乘积的分组到达速率，从分组错误率和期望的波传输成功率计算。版权所有（C）2010，JPO＆INPIT

12. 发明专利

JP2010016637A Radio equipment, and method 审中-公开
标题翻译：无线电设备和方法
公开(公告)号：JP2010016637A
公开(公告)日：2010-01-21
申请号：JP2008174852
申请日：2008-07-03
申请人： Fujitsu Ltd , 富士通株式会社
发明人： KAWASAKI TAKESHI
IPC分类号： H04W56/00 , H04J3/06 , H04W4/04
摘要： PROBLEM TO BE SOLVED: To reduce such a phenomenon that transmission data of step-out straddles a slot which absolutely synchronizes when the step-out occurs.
SOLUTION: Radio equipment includes: a detecting means for detecting that a first state in which a first timing signal can be generated with first accuracy is shifted to a second state in which a second timing signal is generated in second accuracy lower than the first accuracy; and a control means for setting a short time duration in the maximum value of a time duration for performing carrier sensing in the first state so as to be used as a time duration for performing carrier sensing in the second state when the transition to the second state is detected.
COPYRIGHT: (C)2010,JPO&INPIT
摘要翻译：要解决的问题：为了减少跨出发送数据跨越出现发生绝对同步的时隙的现象。解决方案：无线电设备包括：检测装置，用于检测其中以第一精度产生第一定时信号的第一状态被转移到第二状态，其中产生第二定时信号的第二状态的第二准确度低于第一准确度; 以及控制装置，用于设置在第一状态下进行载波侦听的持续时间的最大值中的短时间，以便当被转换到第二状态时被用作在第二状态下执行载波感测的持续时间被检测到。版权所有（C）2010，JPO＆INPIT

13. 发明专利

JP2005245034A Feedback control method and apparatus in atm exchange 有权
标题翻译： ATM交换机中的反馈控制方法和装置
公开(公告)号：JP2005245034A
公开(公告)日：2005-09-08
申请号：JP2005136291
申请日：2005-05-09
申请人： Fujitsu Ltd , 富士通株式会社
发明人： NAKAMICHI KOJI , SOMIYA TOSHIO , KAWASAKI TAKESHI , KAWARAI KENICHI , WATANABE NAOTOSHI , KUSAYANAGI MICHIO
IPC分类号： H04L12/813 , H04L12/827 , H04L12/911 , H04L12/56
摘要： PROBLEM TO BE SOLVED: To provide a specific ABR control function for realizing an ABR service in an ATM exchange system. SOLUTION: A subscriber line processing device 106 is provided with a function to calculate a cell to-and-fro delay time on the basis of a time from when a cell returns at a terminal till when it comes back. A switch section 101 or a multiple-separation device 108 is provided with a congestion detection function. A rate calculation means 104 calculates a transmission rate related to an exit-side line and writes into the cell, and a rate modification means 105 modifies the transmission rate properly according to the occurrence of the congestion. The rate modification means 105 also measures a number of communicating connections, in that situation, the number of the communicating connections expected to exist in a predetermined time is estimated with a predetermined means on the basis of the number of the communicating connections counted in a time shorter than the predetermined time. In addition, those estimated number of the communicating connections and actual number of the communicating connections determines a coefficient, and next estimation uses the coefficient to estimate more proper value. COPYRIGHT: (C)2005,JPO&NCIPI
摘要翻译：要解决的问题：提供一种用于在ATM交换系统中实现ABR服务的特定ABR控制功能。解决方案：用户线处理装置106具有根据从终端到终端返回时间的时间计算一个一个一个一个的来回延迟时间的功能。开关部分101或多分离装置108具有拥堵检测功能。速率计算装置104计算与出口侧线相关的传输速率并写入小区，并且速率修改装置105根据拥塞的发生来适当地修改传输速率。速率修改装置105还测量多个通信连接，在这种情况下，预定时间内预期存在的通信连接的数量是以预定的方式根据在一段时间内计数的通信连接的数量来估计的比预定时间短。此外，这些通信连接的估计数量和通信连接的实际数量确定系数，并且下一个估计使用该系数来估计更适当的值。版权所有（C）2005，JPO＆NCIPI

14. 发明专利

JP2013102386A Area detection device, area detection method, and area detection program 有权
标题翻译：区域检测装置，区域检测方法和区域检测程序
公开(公告)号：JP2013102386A
公开(公告)日：2013-05-23
申请号：JP2011245777
申请日：2011-11-09
申请人： Fujitsu Ltd , 富士通株式会社
发明人： KAWASAKI TAKESHI
IPC分类号： H04W16/18
CPC分类号： H04W36/0083
摘要： PROBLEM TO BE SOLVED: To reduce an amount of calculation in detecting communication disabled area.SOLUTION: A coverage hole detection device 10 comprises a reception power value acquisition unit 13, a handover point locating unit 14, a communication quality value calculation unit 15, and a coverage hole determination unit 16. The reception power value acquisition unit 13 acquires values of reception powers from peripheral base stations in a plurality of areas. The handover point locating unit 14 locates a handover point of a relay station by using the reception power. The communication quality value calculation unit 15 calculates communication quality of the peripheral base station in an area including the handover point among the plurality of areas. The coverage hole determination unit 16 determines whether it is possible to communicate with the peripheral base station with predetermined communication quality in the area including the handover point, by using the communication quality of the peripheral base station.
摘要翻译：要解决的问题：减少检测通信禁用区域的计算量。解决方案：覆盖孔检测装置10包括接收功率值获取单元13，切换点定位单元14，通信质量值计算单元15和覆盖孔确定单元16.接收功率值获取单元13 从多个区域中的外围基站获取接收功率的值。切换点定位单元14通过使用接收功率来定位中继站的切换点。通信质量值计算单元15计算包括多个区域中的切换点的区域中的外围基站的通信质量。覆盖孔确定单元16通过使用周边基站的通信质量来确定是否可以与包括切换点的区域中的具有预定通信质量的外围基站进行通信。版权所有（C）2013，JPO＆INPIT

15. 发明专利

JP2012156730A Handover quality evaluation program 有权
标题翻译：切换质量评估计划
公开(公告)号：JP2012156730A
公开(公告)日：2012-08-16
申请号：JP2011013478
申请日：2011-01-25
申请人： Fujitsu Ltd , 富士通株式会社
发明人： KAWASAKI TAKESHI
IPC分类号： H04W36/30 , H04W36/38
摘要： PROBLEM TO BE SOLVED: To alleviate an operation load related to extraction of an HO point and evaluation of a wireless quality of the HO point.SOLUTION: An HO quality evaluation program makes an information processing device execute a process of acquiring reception statuses of first and second wireless signals at a plurality of reference points between first and second base stations (S101). In addition, the HO quality evaluation program makes the information processing device execute a process of estimating reception statuses of the first and second wireless signals between the plurality of reference points based on the reception statuses of the first and second wireless signals (S102). In addition, the HO quality evaluation program makes the information processing device execute a process of extracting an HO point that satisfies an HO condition for switching over a base station communicating with a mobile terminal device, based on the reception statuses of the first and second wireless signals between the plurality of reference points (S103). In addition, the HO quality evaluation program makes the information processing device execute a process of evaluating a signal quality of the first and second wireless signals at the extracted HO point (S104).
摘要翻译：要解决的问题：减轻与HO点的提取相关的操作负载和对HO点的无线质量的评估。解决方案：HO质量评估程序使得信息处理设备执行在第一和第二基站之间的多个参考点处获取第一和第二无线信号的接收状态的处理（S101）。此外，HO质量评价程序使得信息处理装置执行基于第一和第二无线信号的接收状态来估计多个参考点之间的第一和第二无线信号的接收状态的处理（S102）。此外，HO质量评价程序使得信息处理装置执行提取满足用于切换与移动终端装置通信的基站的HO条件的HO点的处理，基于第一和第二无线接收状态多个参考点之间的信号（S103）。此外，HO质量评价程序使得信息处理装置执行在提取的HO点处评估第一和第二无线信号的信号质量的处理（S104）。版权所有（C）2012，JPO＆INPIT

16. 发明专利

JP2002208945A DESTINATION INFORMATION MANAGING APPARATUS FOR PACKET 失效
公开(公告)号：JP2002208945A
公开(公告)日：2002-07-26
申请号：JP2001003000
申请日：2001-01-10
申请人： FUJITSU LTD
发明人： EZAKI YUTAKA , KAWASAKI TAKESHI
IPC分类号： H04L12/701 , H04L12/771 , H04L12/56
摘要： PROBLEM TO BE SOLVED: To provide a destination information managing apparatus for packet capable of keeping more prefixes than those of a CAM, and retrieving prefixes more rapidly than a RAM. SOLUTION: The apparatus for managing the destination information of the packets for selecting the paths of the packets is provided with a first memory, a second memory having a retrieval speed lower than the first memory and the degree of integration higher than the first memory, and a compiling section for compiling a path table storing the destination information so that the information is over the first and second memories.

17. 发明专利

JPH10135975A FEEDBACK CONTROLLER IN CELL EXCHANGE AND CELL-SCHEDULING EQUIPMENT 失效
公开(公告)号：JPH10135975A
公开(公告)日：1998-05-22
申请号：JP29031196
申请日：1996-10-31
申请人： FUJITSU LTD
发明人： SOMIYA TOSHIO , NAKAMICHI KOJI , WATANABE NAOSATO , KAWASAKI TAKESHI
IPC分类号： H04Q3/00 , H04L12/801 , H04L12/815 , H04L12/827 , H04L12/835 , H04L12/863 , H04L12/865 , H04L12/911 , H04Q11/04 , H04L12/28
摘要： PROBLEM TO BE SOLVED: To realize a valid control function between VS and VD in a same exchange and a dynamic shaping function relating thereto, with respect to the network congestion avoidance technology based on feedback control in the ABR service. SOLUTION: An incoming control loop 111 for the ABR connection is formed between a transmission terminal equipment 101 (A) and a VD-L105, and an outgoing control loop 112 for the ABR connection is formed between a reception terminal equipment 101 (B) and a VS-L106, an in-switch control loop 113 for the ABR connection is formed between the upperstream VS-I107 and the down- stream VD-I108, and the three control loops are mutually interlocked. The control loop of the ABR connection is segmented into a plurality of loops, to improve the response performance of the feedback control of the ABR connection.

18. 发明专利

JPH09214500A ATM COMMUNICATION SYSTEM 失效
公开(公告)号：JPH09214500A
公开(公告)日：1997-08-15
申请号：JP1549296
申请日：1996-01-31
申请人： FUJITSU LTD
发明人： NISHI TETSUYA , KAWASAKI TAKESHI , NAKAMICHI KOJI , SOMIYA TOSHIO , NAKAJIMA MIWAKO
IPC分类号： H04Q3/00 , H04L12/28
摘要： PROBLEM TO BE SOLVED: To attain address registration to an address solution device even when a subscriber does not know a physical address of the address solution device in the ATM communication system in which the address solution device manages addresses of each subscriber terminal and connects to the subscriber terminals via an ATM switch. SOLUTION: The system is provided with a connectionless server 4 managing addresses of each subscriber terminal 1 and routing a message for connectionless communication. When a new subscriber is in existence, the connectionless server 4 inserts a physical address of the new subscriber terminal 1 registered in its own station to a connectionless message and informs the resulting message to an address solution device 3. Then the address solution device 3 requests return of a logic address to the new subscriber terminal 1 by using the physical address of the new subscriber terminal 1 as a destination address so as to solve the address backward and registers the logic address of the new subscriber terminal 1.

19. 发明专利

JPH08331140A CONNECTIONLESS SERVER 失效
公开(公告)号：JPH08331140A
公开(公告)日：1996-12-13
申请号：JP13513095
申请日：1995-06-01
申请人： FUJITSU LTD
发明人： KAWASAKI TAKESHI , NISHI TETSUYA
IPC分类号： H04Q3/00 , H04L12/28
摘要： PURPOSE: To perform buffering of a message overflowing from delivery limitation with hardware small in capacity in a connectionless server. CONSTITUTION: This server is constituted of a shared buffer 1 on/from which an arbitrary address is written and read out and in which an ATM cell is housed, and an address storing means 2 which stores the address representing the area of the shared buffer 1 storing the ATM cell is stored in the order of delivery of the ATM cell.

20. 发明专利

JPH06120959A CONNECTIONLESS COMMUNICATION SYSTEM 失效
公开(公告)号：JPH06120959A
公开(公告)日：1994-04-28
申请号：JP26864192
申请日：1992-10-07
申请人： FUJITSU LTD
发明人： KAWASAKI TAKESHI , NISHI TETSUYA , MUKAI HARUO
IPC分类号： H04L12/42
摘要： PURPOSE:To unnecessitate to store subscriber's address under other servers inside a same hierarchical group and to reduce the number of required PVCs. CONSTITUTION:The server 21 for performing a intrinsic processing to connectionless communication holds a subscriber's address table 21a for specifying the address of a subordinate subscriber 11 and is connected with the adjacent server 21 in a loop shape by half-fixing channels (PVC) 31a-31n. The server 21 transfers a connectionless message CLMS from the subordinate subscriber 11 to the adjacent server by utilizing the half-fixing channels PVC 31a-31n and the server which receives the message CLMS refers to the destination address DA of the message and the subscriber's address table 21a and discriminates whether the message CLMS is addressed to the subordinate subscriber or not. Then, the message is fetched and transferred to the destination subscriber when it is addressed to the subordinate and the message is transferred to the adjacent server when it is not addressed to the subordinate subscriber.

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