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公开(公告)号：JP2013150354A
公开(公告)日：2013-08-01
申请号：JP2013084723
申请日：2013-04-15
Applicant: Toshiba Corp , 株式会社東芝
Inventor： TANIZAWA YOSHIMICHI , ISE TSUNETARO , KAMAGATA EIJI , FURUKAWA TSUYOSHI , ISHIHARA TAKESHI , OYAMA YUICHIRO , MURAKAMI TAKAOMI
CPC classification number: Y02B60/50
Abstract: PROBLEM TO BE SOLVED: To assign a bit length of a control ID for remote control of a controlled node in consideration of efficiency of an entire communication system.SOLUTION: A communication device includes a control section and a transmission section. The control section assigns a finite number of pieces of identification information to a plurality of controlled nodes while permitting reuse, respectively, in ascending order or descending order of controllable field intensity. When there is a controlled node group assigned with the same first identification information as a target controlled node and having controllable field intensity smaller than that of the target controlled node, the transmission section transmits an ignorance request signal requesting ignorance of a control request signal using the first identification information as a destination according to maximum controllable field intensity of the controlled node group by using the first identification information as a destination (A). After (A), the transmission section transmits the control request signal according to controllable field intensity of the target controlled node by using the first identification information as a destination (B).
Abstract translation: 要解决的问题：考虑到整个通信系统的效率，分配用于控制节点的远程控制的控制ID的位长度。解决方案：通信设备包括控制部分和传输部分。 控制部分分配有限数量的识别信息到多个受控节点，同时分别以可控的场强度的升序或降序来重复使用。 当存在被分配有与目标受控节点相同的第一识别信息并且具有小于目标受控节点的可控场强的受控节点组时，发送部分使用所述控制节点组发送无效控制请求信号， 通过使用第一识别信息作为目的地（A），根据受控节点组的最大可控场强度的第一识别信息作为目的地。 在（A）之后，发送部通过使用第一识别信息作为目的地（B），根据目标受控节点的可控场强发送控制请求信号。
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公开(公告)号：JP2006222992A
公开(公告)日：2006-08-24
申请号：JP2006113880
申请日：2006-04-17
Applicant: TOSHIBA CORP
Inventor： TAKAGI MASAHIRO , KAMAGATA EIJI , KATO NORIYASU , TSUNODA KEIJI , NAKAKITA KUMIKO , NOUJIN KATSUYA , SERIZAWA MUTSUMI
IPC: H04L12/701 , H04L12/835 , H04L12/865 , H04L12/893
Abstract: PROBLEM TO BE SOLVED: To provide a highly reliable gateway device for improving the performance of communications utilizing a transport layer connection provided by setting up the transport layer connection between a wire terminal and a radio terminal in a form suitable for an application without changing implementation of the transport layer of a terminal connected to a wire network. SOLUTION: The gateway device for relay connecting the radio network and the wire network determines whether the transport layer connection between a radio terminal connected to the radio network and a terminal connected to the wire network is set up in two-divided forms of the transport layer connection for communication with the wire network and the transport layer connection for communication with the wire network or a message passes through not by way of the division connections according to types of applications known from a transport layer protocol data unit for requesting setting up of the transport layer connection between the terminals. COPYRIGHT: (C)2006,JPO&NCIPI
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3.发明专利Managing device, cache control method of the same, recording medium, and cache control method of information transfer system 有权信息传输系统的管理设备，缓存控制方法，记录介质和缓存控制方法
公开(公告)号：JP2006196008A
公开(公告)日：2006-07-27
申请号：JP2006016118
申请日：2006-01-25
Applicant: Toshiba Corp , 株式会社東芝
Inventor： INOUE ATSUSHI , KAMAGATA EIJI , KATO NORIYASU , SHIBUYA NAOHISA , KUMAKI YOSHINARI , SHOHATA YASURO
Abstract: PROBLEM TO BE SOLVED: To provide a data distribution system for an effective cache to a specific user for access by a mobile terminal unit. SOLUTION: The information distribution system includes a mobile computer connected to the Internet via a radio network; an information server for providing the mobile computer with WWW information via the Internet; a plurality of cache servers for cacheing information distributed by the information server for the mobile computer; and a managing device for managing the cached state of a group of cache servers. In the information distribution system, the mobile computer notifies the managing device of information related to the connection position in the radio network of at least an own device at prescribed timing, and the managing device selects one or a plurality of cache servers arranged near the mobile computer based on information related to the connection position notified from the mobile computer, and performs control for cacheing prescribed WWW information by the selected cache server. COPYRIGHT: (C)2006,JPO&NCIPI
Abstract translation: 要解决的问题：为特定用户提供有效高速缓存的数据分发系统以便移动终端单元访问。 解决方案：信息分发系统包括通过无线网络连接到因特网的移动计算机; 用于经由因特网为移动计算机提供WWW信息的信息服务器; 多个高速缓存服务器，用于缓存由移动计算机的信息服务器分发的信息; 以及用于管理一组缓存服务器的缓存状态的管理设备。 在信息分配系统中，移动计算机在规定的时刻向至少自己的设备的无线网络中的与连接位置有关的信息通知管理设备，并且管理设备选择在移动台附近布置的一个或多个缓存服务器 基于与从移动计算机通知的连接位置相关的信息的计算机，并且执行由所选择的高速缓存服务器高速缓存指定的WWW信息的控制。 版权所有（C）2006，JPO＆NCIPI
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公开(公告)号：JP2004297354A
公开(公告)日：2004-10-21
申请号：JP2003085669
申请日：2003-03-26
Applicant: Toshiba Corp , 株式会社東芝
Inventor： TSUNODA KEIJI , KAMAGATA EIJI , NAMEKATA MINORU
Abstract: PROBLEM TO BE SOLVED: To efficiently provide communication service by using a plurality of radio channel in an overlapped area. SOLUTION: A radio terminal 3 transmits a query message indicative of one of a plurality of service groups by using the radio channel. The query message is transformed into a query packet by an access point device 1 and is transmitted to a management server 2. The management server 2 selects the radio channel belonging to the service group indicated on the query packet and transmits an answer packet indicative of ESS-ID (Extended Service Set Identity) assigned to the radio channel. The answer packet is transformed to an answer message by the access point device 1 and is transmitted to the radio terminal equipment 3 by using the radio channel used for the transmission of the query message. The radio terminal equipment 3 receives transmitted answer information. COPYRIGHT: (C)2005,JPO&NCIPI
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公开(公告)号：JP2000276425A
公开(公告)日：2000-10-06
申请号：JP8026799
申请日：1999-03-24
Applicant: TOSHIBA CORP
Inventor： INOUE ATSUSHI , KAMAGATA EIJI , KATO NORIYASU , SHIBUYA NAOHISA , KUMAKI YOSHINARI , SHOHATA YASURO
Abstract: PROBLEM TO BE SOLVED: To achieve effective caching for a specific user who gains mobile access by allowing the managing device to determine multiple cache servers according to information reported from the mobile computer and make the cache servers cache specific WWW information. SOLUTION: The multiple cache servers 3 are decentralized and arranged on a radio-industry-side network and previously cache specific WWW information mainly for mobile terminal devices 1 connected to radio base stations 12 corresponding to themselves. A mobile terminal device 1 informs the managing device 8 of information regarding the connection position of the device with the radio network in specific timing. The managing device 8 makes each cache server 3, determined according to the information reported from the mobile terminal device 1, cache the specific WWW information for the mobile terminal device 1.
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Patent Agency Ranking
公开(公告)号：JP2000023242A
公开(公告)日：2000-01-21
申请号：JP18489998
申请日：1998-06-30
Applicant: TOSHIBA CORP
Inventor： SAKAMOTO TAKEFUMI , KAMAGATA EIJI
Abstract: PROBLEM TO BE SOLVED: To make a frequency of using high speed communication services increased and to transmit information of a large capacity for a short time by utilizing service and communicating when the high speed communication services enter an available state within a specified time after a communication demand from a mobile terminal and/or the communication demand to the mobile terminal. SOLUTION: When a communication demand through second radio base station BSB2 occurs at a mobile terminal MS by a user operation or the like, a timer within a mobile terminal MS3 is started. If communication by way of the second radio base station BSB2 becomes possible until a timer value reaches a standby limit time, a communication demand is transmitted to a communication network through the second radio base station BSB2. When the timer value reaches the standby limit time, it is judged that the communication through the second radio base station BSB2 is impossible. In this case, it is possible to communication at low speed by being connected to a first radio base station BSA1.
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公开(公告)号：JPH11261518A
公开(公告)日：1999-09-24
申请号：JP6363398
申请日：1998-03-13
Applicant: TOSHIBA CORP
Inventor： NAMEKATA MINORU , KAMAGATA EIJI
Abstract: PROBLEM TO BE SOLVED: To facilitate variable speed data transmission and asymmetrical data transmission. SOLUTION: A TDMA(time division multiple access) frame has N time slots 11 for up lines and M time slots 12 for down lines. A radio base station allocates a time slot to each radio terminal station by a control channel(C ch). In such a case, allocation is successively performed in order of a time slot in the neighborhood of the center of the time slot 11 and 12 for the up and down lines. Thus, mutual intervals between allocated time slots become relatively equal and are effective to the variable speed data transmission and the asymmetrical data transmission.
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公开(公告)号：JPH10190565A
公开(公告)日：1998-07-21
申请号：JP35097696
申请日：1996-12-27
Applicant: TOSHIBA CORP
Inventor： NOUJIN KATSUYA , NAMEKATA MINORU , KAMAGATA EIJI , KUMAKI YOSHINARI , IGUCHI MASAHIRO
Abstract: PROBLEM TO BE SOLVED: To simplify the communication protocol of a system where outgoing channel transmission speed is higher than the incoming channel one and also to improve communication efficiency. SOLUTION: The radio communication system is provided with a narrow band base station 3 providing a bi-directional radio channel, a wide band base station 4 providing an outgoing wide band radio channel with data transmission speed being higher than the bi-directional radio channel which is provided by the narrow band base station 3 and a radio terminal 20 executing radio communication with the base stations 3 and 4. The wide band base station 4 is provided with a timer 9 clocking a prescribed response waiting time after a packet is transmitted to the radio terminal 20 and a radio interface 8 re-transmitting the packet in any one of the cases when the timer 9 becomes time-out or when a REJECT message (NACK) from the radio terminal 20 is received. The radio terminal 20 is provided with the timer 33 clocking the prescribed response waiting time after the packet is transmitted to the narrow band base station 3 through the use of the bi-directional narrow band radio channel and a control part 34 re-transmitting the packet only when the timer 33 becomes time-out.
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公开(公告)号：JPH09200861A
公开(公告)日：1997-07-31
申请号：JP953296
申请日：1996-01-23
Applicant: TOSHIBA CORP
Inventor： NOUJIN KATSUYA , TOSHIMITSU KIYOSHI , KAMAGATA EIJI , NAKAJIMA NOBUYASU
Abstract: PROBLEM TO BE SOLVED: To provide a radio communication system in which setup and call interruption of a radio communication terminal equipment connecting to a network via two-way incoming/outgoing narrow band radio channels and an outgoing broad band radio channel are conducted efficiently, the power consumption of a receiver of a broad band radio channel provided to the radio communication terminal equipment is reduced and the radio communication terminal equipment is made small. SOLUTION: A radio communication terminal equipment 5 sets a call with a narrow band radio base station 3 to set up a 2-way narrow band radio channel and makes setup request to a database 2 by using the 2-way narrow band radio channel and the database 2 accordingly makes setup request between the broad band radio base station 4 and a terminal equipment 5 to assign the outgoing broad band radio channel to the terminal equipment 5 and sets a call between the terminal equipment 5 and the database 2.
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公开(公告)号：JPH09186739A
公开(公告)日：1997-07-15
申请号：JP35215095
申请日：1995-12-28
Applicant: TOSHIBA CORP
Inventor： KAMAGATA EIJI
IPC: H04L29/08
Abstract: PROBLEM TO BE SOLVED: To provide a communication control method in which waste of re- transmission of a packet by a transmitter side because of not in time of an acknowledge regardless of reception of a packet normally and deteriorated throughput due to hindrance of consecutive transmission of packets is avoided because of occurrence of expiration of time by dividing data into a size with a shorter time for transmission of the packet sent by a terminal equipment than the expiration of time of a re-transmission timer and processing the divided data into a packet. SOLUTION: A timer section 104 starts a re-transmission timer at transmission for each transmission packet to check whether or not reception acknowledge is received within the expiration of time and to measure a round trip time and to calculate the expiration of time based on the measured round trip time. A packet output section 103 divides the packet length of the packet to be sent so as to generate packets so that the acknowledge is received within the expiration time of the re-transmission timer based on them above.
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