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1. 发明专利

JP2008258993A Method and device for wireless lan handover 审中-公开
标题翻译：无线局域网切换的方法和设备
公开(公告)号：JP2008258993A
公开(公告)日：2008-10-23
申请号：JP2007099951
申请日：2007-04-06
申请人： Iwatsu Electric Co Ltd , 岩崎通信機株式会社
发明人： YAMANE KOJI
IPC分类号： H04L12/701 , H04W36/18 , H04W36/36 , H04W36/38 , H04W40/34 , H04W80/04 , H04W88/08
摘要： PROBLEM TO BE SOLVED: To provide an inexpensive method and device for wireless LAN handover, which avoids communication interruption if a mobile terminal moves across a router in a wireless LAN communication network. SOLUTION: The mobile terminal (ST) wireless communicates with one (APaH) of access points (APaH, APaF) placed in front and back of the router (RT) which instructs a communication route in an IP network (IPN) that is a communication network according to an Internet protocol (IP). Considering when the mobile device moves and handover for wireless communication with the other (APaF) occurs, the access points (APaH, APaF) are provided with an alternative mobile node (PMN) to control wireless communication handover instead of the mobile terminal (ST). Handover across a router is controlled through a cable rather than wireless, so that communication is reliable and communication interruption dose not occur. COPYRIGHT: (C)2009,JPO&INPIT
摘要翻译：要解决的问题：提供一种用于无线LAN切换的便宜的方法和装置，其如果移动终端在无线LAN通信网络中跨越路由器移动，则避免通信中断。解决方案：移动终端（ST）与位于路由器（RT）前后的接入点（APaH，APaF）中的一个（APaH）无线通信，该接入点指示IP网络（IPN）中的通信路由，是根据因特网协议（IP）的通信网络。考虑到当移动设备移动并且与另一个APaF进行无线通信切换时，接入点（APaH，APaF）被提供有替代移动节点（PMN），以控制无线通信切换而不是移动终端（ST）。跨越路由器的切换通过电缆而不是无线进行控制，使得通信是可靠的，并且不会发生通信中断。版权所有（C）2009，JPO＆INPIT

2. 发明专利

JP2008067121A Automatic channel determination method and apparatus 审中-公开
标题翻译：自动通道测定方法及装置
公开(公告)号：JP2008067121A
公开(公告)日：2008-03-21
申请号：JP2006243564
申请日：2006-09-08
申请人： Iwatsu Electric Co Ltd , 岩崎通信機株式会社
发明人： KOZUKA ATSUSHI , YAMANE KOJI
IPC分类号： H04L12/28 , H04B7/26 , H04W28/18 , H04W88/12
摘要： PROBLEM TO BE SOLVED: To realize a management device ME for concentratedly managing channel determination with a commercially available personal computer, and to prevent channel determination time from depending on the number of access points AP.
SOLUTION: The management device ME indicates measurement of electric wave interference amount from access points AP0 to 4 around access points AP0, 1, 2, and acquires an interference amount. The device calculates average signal intensity for every surrounding access point AP from the interference amount, and raises preference order of an access point AP of an object having the large total sum of the average signal intensity. Although a use channel is determined from an object access point having higher preference order, remeasurement of the interference amount at that time is not performed, and the average signal intensity calculated in the preference order determination is reused. The reutilization enables greater time shortening up to channel determination. This effect becomes obvious as the number of access points AP is increased.
COPYRIGHT: (C)2008,JPO&INPIT
摘要翻译：要解决的问题：实现用市售的个人计算机集中管理信道确定的管理装置ME，并且防止信道确定时间取决于接入点AP的数量。解决方案：管理设备ME指示在接入点AP0,1,2周围的接入点AP0至4的电波干扰量的测量，并获取干扰量。该设备从干扰量计算每个周围接入点AP的平均信号强度，并且提高具有平均信号强度的总和大的对象的接入点AP的偏好顺序。虽然从具有较高优先次序的对象接入点确定使用信道，但是不执行该时间的干扰量的重新测量，并且重用在偏好顺序确定中计算出的平均信号强度。再利用可以缩短通道确定的时间。当接入点AP的数量增加时，该效果变得明显。版权所有（C）2008，JPO＆INPIT

3. 发明专利

JP2006081164A Method for expanding area for lan system and wirelss lan and access points and stations thereof 审中-公开
标题翻译：用于LAN系统和WIRELSS LAN的扩展区域及其访问点和站点的方法
公开(公告)号：JP2006081164A
公开(公告)日：2006-03-23
申请号：JP2005224309
申请日：2005-08-02
申请人： Iwatsu Electric Co Ltd , 岩崎通信機株式会社
发明人： YAMANE KOJI
IPC分类号： H04L12/28 , H04B7/15 , H04B7/24 , H04L12/46
摘要： PROBLEM TO BE SOLVED: To realize a method for expandaing an area of a wireless LAN in which a service area can be expanded through a simple procedure, and a LAN system.
SOLUTION: Each access point determines an insertion status of a wired LAN cable and acts as the master access point if a cable is inserted, or as the slave access point if no cable is connected. Of the two access points receiving a "connection instruction", the master access point or a higher access point connected directly or indirectly to the master access point and a lower access point not connected to the master access point are added their lower access point as a new service area through a procedure comprising sending a "connection advice message" from the higher level, sending a "connection request message" from the lower level and then sending a "connection response message" from the higher level.
COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：要解决的问题：实现一种通过简单的过程来扩展其中可以扩展服务区域的无线LAN的区域的扩展方法以及LAN系统。
解决方案：每个接入点确定有线LAN电缆的插入状态，如果插入电缆，则作为主接入点，或者如果没有连接电缆，则作为从接入点。在接收“连接指令”的两个接入点中，主接入点或直接或间接连接到主接入点的较高接入点和未连接到主接入点的较低接入点将其下接入点添加为新服务区域通过从较高级别发送“连接建议消息”的过程，从较低级别发送“连接请求消息”，然后从较高级别发送“连接响应消息”。版权所有（C）2006，JPO＆NCIPI

4. 发明专利

JP2004088320A Pseudo noise generator 有权
公开(公告)号：JP2004088320A
公开(公告)日：2004-03-18
申请号：JP2002245286
申请日：2002-08-26
申请人： Iwatsu Electric Co Ltd , Koichi Onuma , 大沼孝一 , 岩崎通信機株式会社
发明人： YAMANE KOJI , ONUMA KOICHI
IPC分类号： G06F7/58 , H03B29/00 , H03K3/84
摘要： PROBLEM TO BE SOLVED: To provide a pseudo noise generator for simultaneously specifying an amplitude probability distribution, a crossover value distribution, a pulse duration time distribution, and a pulse interval distribution among the statistical parameters of noise. SOLUTION: A plurality of pseudo random numbers following a designated amplitude probability distribution and the crossover value distribution are generated corresponding to a plurality of required designation levels. Pseudo random numbers for condition designation are generated, where the pseudo random numbers follow a designated pulse interval distribution or the pulse duration time distribution. Based on the pseudo random numbers for condition designation and state sequence determination information stored inside in advance, one of the plurality of pseudo random numbers is sequentially selected for outputting a pseudo random number sequence following the four parameters including the designated amplitude probability distribution, the crossover value distribution, the designated pulse interval distribution, and the pulse duration time distribution, and the pseudo random number sequence is D/A converted for outputting as desired pseudo noise. COPYRIGHT: (C)2004,JPO

5. 发明专利

JP2005006233A Method and apparatus of generating periodic pseudo noise 有权
标题翻译：产生周期性PSEUDO噪声的方法和装置
公开(公告)号：JP2005006233A
公开(公告)日：2005-01-06
申请号：JP2003170142
申请日：2003-06-16
申请人： Iwatsu Electric Co Ltd , 岩崎通信機株式会社
发明人： YAMANE KOJI
IPC分类号： G06F7/58 , H03B29/00 , H03K3/84
摘要： PROBLEM TO BE SOLVED: To solve the problem that a pseudo noise generator cannot generate periodic pseudo noise although a number of electromagnetic interference waves are periodic noises. SOLUTION: A pseudo noise generator is provided with a distributing memory for storing a plurality of pulse duration distributions and pulse width distributions. Further, the generator has an amplitude/crossover value random number generator A, a transition random number generator B, and a periodic pulse random number generator D. These devices read contents of a plurality of memories in a predetermined periodic order, and generate random numbers conforming to the pulse duration distribution and the pulse width distribution which are read to obtain a transition random number initial value X B , thereby generating periodic pulse random numbers. In this way, amplitude probability distribution, crossover value distribution, the pulse duration distribution, and the pulse width distribution are simultaneously designated, and the evaluation of the interference resistance of an electronic device against periodic noise can be satisfactorily performed. COPYRIGHT: (C)2005,JPO&NCIPI
摘要翻译：要解决的问题：为了解决尽管许多电磁干扰波是周期性噪声，伪噪声发生器不能产生周期性伪噪声的问题。解决方案：伪噪声发生器设置有用于存储多个脉冲持续时间分布和脉冲宽度分布的分配存储器。此外，发生器具有振幅/交叉值随机数发生器A，转移随机数发生器B和周期性脉冲随机数发生器D.这些装置以预定的周期顺序读取多个存储器的内容，并产生随机数符合读取的脉冲宽度分布和脉冲宽度分布，以获得转移随机数初始值X B ，从而产生周期性脉冲随机数。以这种方式，同时指定振幅概率分布，交叉值分布，脉冲持续时间分布和脉冲宽度分布，并且可以令人满意地执行电子装置对周期性噪声的抗干扰性的评估。版权所有（C）2005，JPO＆NCIPI

6. 发明专利

JP2006050393A Radio lan terminal 审中-公开
标题翻译：无线局域网终端
公开(公告)号：JP2006050393A
公开(公告)日：2006-02-16
申请号：JP2004230648
申请日：2004-08-06
申请人： Iwatsu Electric Co Ltd , 岩崎通信機株式会社
发明人： OZAWA KENJI , YAMANE KOJI
IPC分类号： H04L12/28 , H04W8/26 , H04W76/02 , H04W80/04 , H04W84/12
摘要： PROBLEM TO BE SOLVED: To provide a radio LAN terminal capable of being connected to a wired line network including a special terminal without a trouble.
SOLUTION: The IP address of an IP terminal and a MAC address on a wired line network for carrying out communication through a radio LAN terminal are registered in a management table. The mutual conversion of a wired line LAN frame and a radio LAN frame and the conversion of the MAC address in both frames are carried out in a conversion unit. When an ARP is received, the content of the management table is renewed, and an originating MAC address out of wired line LAN frames transferred from the side of a wired line LAN network is converted to a MAC address of the radio LAN terminal. If a packet transferred from the side of the radio LAN network is a radio LAN frame, a destination MAC address is retrieved and the destination MAC address is converted to the retrieved MAC address. If the retrieved MAC address cannot be obtained, the transferred packet is discarded.
COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：要解决的问题：提供一种能够连接到包括特殊终端的有线线路网络的无线电LAN终端而没有麻烦。解决方案：通过无线电LAN终端进行通信的IP终端的IP地址和有线线路上的MAC地址被登记在管理表中。在转换单元中执行有线线LAN帧和无线LAN帧的相互转换以及两帧中的MAC地址的转换。当接收到ARP时，管理表的内容被更新，并且从有线线LAN网络侧传输的有线线LAN帧中的始发MAC地址被转换为无线LAN终端的MAC地址。如果从无线LAN网络侧传送的分组是无线LAN帧，则检索目的地MAC地址，并将目的地MAC地址转换为检索到的MAC地址。如果无法获取检索到的MAC地址，则丢弃传输的数据包。版权所有（C）2006，JPO＆NCIPI

7. 发明专利

JP2005006232A Method and apparatus of generating periodic pseudo noise 有权
标题翻译：产生周期性PSEUDO噪声的方法和装置
公开(公告)号：JP2005006232A
公开(公告)日：2005-01-06
申请号：JP2003170141
申请日：2003-06-16
申请人： Iwatsu Electric Co Ltd , 岩崎通信機株式会社
发明人： YAMANE KOJI
IPC分类号： G01R31/00 , G06F7/58 , H03B29/00 , H03K3/84
摘要： PROBLEM TO BE SOLVED: To solve the problem that a pseudo noise generator cannot generate periodic pseudo noise although a number of electromagnetic interference waves are periodic noise. SOLUTION: A pseudo noise generator is provided with a distributing memory for storing a plurality of pulse duration distributions and pulse width distributions, and an amplitude/crossover value random number generator A and a periodic pulse random number generator D for reading contents of a plurality of memories in a predetermined periodic order and generating random numbers conforming to the pulse duration distribution and the pulse width distribution which are read, thereby generating periodic pulse random numbers. In this way, amplitude probability distribution, crossover value distribution, the pulse duration distribution and the pulse width distribution are simultaneously designated, and the evaluation of the interference resistance of an electronic device against periodic noise can be satisfactorily performed. COPYRIGHT: (C)2005,JPO&NCIPI
摘要翻译：要解决的问题：为了解决尽管许多电磁干扰波是周期性噪声，伪噪声发生器不能产生周期性伪噪声的问题。解决方案：伪噪声发生器设置有用于存储多个脉冲持续时间分布和脉冲宽度分布的分配存储器，以及用于读取内容的振幅/交叉值随机数发生器A和周期性脉冲随机数发生器D 多个存储器以预定的周期性顺序产生并且产生符合脉冲持续时间分布和脉冲宽度分布的随机数，从而产生周期性的脉冲随机数。以这种方式，同时指定振幅概率分布，交叉值分布，脉冲持续时间分布和脉冲宽度分布，并且可以令人满意地执行电子装置对周期性噪声的抗干扰性的评估。版权所有（C）2005，JPO＆NCIPI

8. 发明专利

JP2006054849A Method of automatic channel decision and automatic channel allocation system for access point 审中-公开
标题翻译：自动通道决策方法及自动通道分配系统
公开(公告)号：JP2006054849A
公开(公告)日：2006-02-23
申请号：JP2005094305
申请日：2005-03-29
申请人： Iwatsu Electric Co Ltd , 岩崎通信機株式会社
发明人： YAMANE KOJI
IPC分类号： H04L12/28 , H04W16/14 , H04W24/00 , H04W72/08 , H04W84/12 , H04W99/00
CPC分类号： H04W72/02 , H04W8/005 , H04W24/10 , H04W28/16 , H04W48/16 , H04W84/12 , H04W88/08
摘要： PROBLEM TO BE SOLVED: To provide a method of automatic channel decision and an automatic channel allocation system for access points, which enable more efficient channel arrangement than a decentralized control system. SOLUTION: An application function of intercommunicating with each of multiple access points is arranged within a wireless LAN system to transmit an interference amount measurement request of the access point to each of multiple access points. Each access point sends out the beacon of the access point, and transmits the interference amount information involved in the beacon receivable from the access point to the application function. The application function prioritizes each access point in the order in which a sum of the signal strengths in the returned interference amount information is larger. Each access point automatically decides the use channel and starts an operation of the access point using a predetermined procedure in accordance with the priority. COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：要解决的问题：提供自动信道决定的方法和用于接入点的自动信道分配系统，其使得能够比分散控制系统更有效的信道安排。解决方案：在无线LAN系统内布置与多个接入点中的每一个相互通信的应用功能，以将接入点的干扰量测量请求发送到多个接入点中的每一个。每个接入点发出接入点的信标，并将可接收信标中涉及的干扰量信息从接入点发送到应用功能。应用功能按照返回的干扰量信息中的信号强度之和较大的顺序对每个接入点进行优先级排序。每个接入点根据优先级自动决定使用信道并使用预定的过程开始接入点的操作。版权所有（C）2006，JPO＆NCIPI

9. 发明专利

JP2001068936A ARTIFICIAL NOISE GENERATOR 失效
公开(公告)号：JP2001068936A
公开(公告)日：2001-03-16
申请号：JP24518399
申请日：1999-08-31
申请人： KANKYO DENJI GIJUTSU KENKYUSHO , IWATSU ELECTRIC CO LTD
发明人： YAMANE KOJI , SHINOZUKA TAKASHI , SETOGUCHI KAORU
IPC分类号： H03B29/00 , G01R31/28 , G06F7/58 , G06F19/00
摘要： PROBLEM TO BE SOLVED: To specify the amplitude probability distribution of noise and to simultaneously specify the pulse width distribution and the pulse interval distribution at a specified amplitude level by providing an arbitrary distribution random number generation part corresponding to the divided amplitude probability distributions. SOLUTION: An arbitrary distribution random number generator 100 is used for exclusively generating a signal x1 according to apd1(x1) and a signal x2 according to tpd2(x2). A signal i1 according to pdd(i1) is generated by an arbitrary random number generator 200 and during time Ti1 corresponding to i1, the signal x1 according to apd1(x1) is continuously generated by the arbitrary random number generator 100. Afterwards, a signal i2 according to psd(i2) is generated by the arbitrary random number generator 200 and during time Ti2 corresponding to i2, the signal x2 according to apd2(x2) is continuously generated by the arbitrary random number generator 100. These adp1(x1) and adp2(x2) and these pdd(i1) and psd(i2) are switched by a signal (s) from a selector SL.

10. 发明专利

JP2003174328A PSEUDO NOISE GENERATOR 审中-公开
公开(公告)号：JP2003174328A
公开(公告)日：2003-06-20
申请号：JP2001370306
申请日：2001-12-04
申请人： IWATSU ELECTRIC CO LTD
发明人： YAMANE KOJI
IPC分类号： G06F7/58 , H03B29/00 , H03K3/84
摘要： PROBLEM TO BE SOLVED: To provide a pseudo noise generator capable of generating a pseudo noise with a designated amplitude probability distribution and a designated crossover value distribution among statistic parameters of noise. SOLUTION: The pseudo noise generator comprises a memory for storing a transition probability calculated from a designated amplitude probability distribution and a designated crossover value distribution, an arbitrarily distributed random number generator for generating signals according with the designated amplitude probability distribution and the designated crossover value distribution using the transition probability stored in the memory, and a D/A converter for converting the signal to an analog value, thereby generating a pseudo noise according to the designated amplitude probability distribution and the designated crossover value distribution. COPYRIGHT: (C)2003,JPO

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