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    • 1. 发明授权
    • Packet transfer scheme and mobile communication system
    • 分组传输方案和移动通信系统
    • US5963550A
    • 1999-10-05
    • US700404
    • 1996-08-29
    • Shoichi HirataMasumi SotoyamaKimio IkedaKazuo SugiyamaAtsushi ShimokawaKoji YamamotoAkihisa Nakajima
    • Shoichi HirataMasumi SotoyamaKimio IkedaKazuo SugiyamaAtsushi ShimokawaKoji YamamotoAkihisa Nakajima
    • H04W8/08H04W8/14H04W76/04H04W92/22H04W92/24H04L12/56
    • H04W8/08H04W8/14H04W92/22H04W92/24
    • In order to provide a packet transfer scheme in which various data can easily be used commonly with other communication methods and a packet can be transferred at a high speed, a mobile communication system comprises a database (20) for storing an identification number of a mobile terminal (40) and location information indicating a zone in which the mobile terminal is currently located, a packet switch (10), and another packet switch (30) capable of communication when the mobile terminal (40) is located in a zone under the packet switch (30). The packet switch (10) inquires of the database (20) about the location information of the mobile terminal (40) when the packet switch (10) receives a packet addressed to the mobile terminal (40). When the mobile terminal (40) is located in the zone under the packet switch (30), the packet is transferred to the mobile terminal (40) through the packet switch (30). Owing to this arrangement, the number of packet switches necessary for transferring the packet to the mobile terminal is two at the most. Thus, the packet can be transferred rapidly.
    • PCT No.PCT / JP95 / 02753 Sec。 371日期:1996年8月29日 102(e)日期1996年8月29日PCT 1995年12月28日PCT PCT。 WO96 / 21328 PCT出版物 日期1996年7月11日为了提供其中各种数据可以容易地与其他通信方法一起使用并且分组可以高速传输的分组传送方案,移动通信系统包括数据库(20),用于存储 移动终端(40)的识别号码和表示移动终端当前所在的区域的位置信息,分组交换机(10)和能够在移动终端(40)位于何处时能够进行通信的另一分组交换机 在分组交换机(30)下的区域中。 当分组交换机(10)接收到寻址到移动终端(40)的分组时,分组交换机(10)向数据库(20)询问移动终端(40)的位置信息。 当移动终端(40)位于分组交换机(30)下的区域中时,分组通过分组交换机(30)传送到移动终端(40)。 由于这种安排,将分组传送到移动终端所需的分组交换机的数量最多是两个。 因此,分组可以快速传送。
    • 2. 发明授权
    • Data communication system and communication terminal equipment
    • 数据通信系统和通信终端设备
    • US6031839A
    • 2000-02-29
    • US702505
    • 1996-09-04
    • Shoichi HirataIchiro OkajimaNoriko UchidaMasumi Sotoyama
    • Shoichi HirataIchiro OkajimaNoriko UchidaMasumi Sotoyama
    • H04L12/00H04L29/06H04L29/12H04L12/56H04L12/28
    • H04L29/12047H04L12/00H04L29/06H04L29/12009H04L61/15
    • A data communication system in which a data communication address for a communication terminal can arbitrarily be changed whenever the communication terminal is used. This data communication system includes a database 60 for storing a corresponding relation between an identifier 41 of a communication terminal 40 and a plurality of data communication addresses used for the communication. The database 60 stores a corresponding relation between the identifier 41 of the communication terminal and the data communication addresses during a period of use thereof in accordance with instructions from the communication terminal 40. When incoming data is received that is directed to certain data communication address, a network switching device 50 obtains an identifier corresponding to the certain data communication address and transmits the data to the communication terminal with the identifier.
    • PCT No.PCT / JP95 / 02756 Sec。 371日期1996年9月4日 102(e)1996年9月4日PCT PCT 1995年12月28日PCT公布。 WO96 / 21298 PCT公开号 日期1996年7月11日每当使用通信终端时,可以任意地改变通信终端的数据通信地址的数据通信系统。 该数据通信系统包括数据库60,用于存储通信终端40的标识符41与用于通信的多个数据通信地址之间的对应关系。 数据库60根据来自通信终端40的指令,在通信终端的标识符41和数据通信地址之间存储对应的关系。当接收到指向特定数据通信地址的输入数据时, 网络交换设备50获得与特定数据通信地址相对应的标识符,并将该数据发送到具有标识符的通信终端。
    • 3. 发明授权
    • Mobile communication systems sharing a control channel
    • 移动通信系统共享一个控制通道
    • US5884165A
    • 1999-03-16
    • US601063
    • 1996-05-07
    • Noriko UchidaAkihiro MaebaraKatsumi KobayashiKoji YamamotoSyoichi HirataKazuo SugiyamaMasumi SotoyamaKoji Sasada
    • Noriko UchidaAkihiro MaebaraKatsumi KobayashiKoji YamamotoSyoichi HirataKazuo SugiyamaMasumi SotoyamaKoji Sasada
    • H04B7/26H04W48/12H04W88/06H04W88/10H04Q7/20
    • H04W48/12H04B7/26H04W88/06H04W88/10
    • In a mobile communication system, a data communication fixed station 3 and a voice communication fixed station 4 control a common service area, the connection between a mobile station 5 and the data communication fixed station 3 can be quickened. The data communication fixed station 3 notifies, sequentially, the voice communication fixed station 4 of channel informations (e.g., usable channels, traffic quantity). The voice communication fixed station 4 receives the channel information via a broadcast channel for voice communication, and broadcasts the channel information to the mobile stations. When the mobile station 5 is to execute packet communication with an ISDN 1 via the data communication fixed station 3, the mobile station 5 selects an appropriate channel among the channels broadcasted thereto, and notifies the data communication fixed station 3 of the selected channel. As such, since the mobile station 5 can determine the channel before the actual communication between the mobile station 5 and the data communication fixed station 3 takes place, the connection between the mobile station 5 and the data communication fixed station 3 can be quickened.
    • PCT No.PCT / JP95 / 02066 Sec。 371日期:1996年5月7日 102(e)日期1996年5月7日PCT提交1995年10月9日PCT公布。 公开号WO96 / 11552 日期1996年4月18日在移动通信系统中,数据通信固定站3和语音通信固定站4控制公共服务区域,可以加快移动站5与数据通信固定站3之间的连接。 数据通信固定站3顺序地通知语音通信固定站4的信道信息(例如,可用信道,业务量)。 语音通信固定站4通过用于语音通信的广播信道接收频道信息,并向频道广播频道信息。 当移动站5经由数据通信固定站3执行与ISDN 1的分组通信时,移动站5在广播的信道中选择适当的信道,并向数据通信固定站3通知所选择的信道。 这样,由于移动站5可以在进行移动站5和数据通信固定站3之间的实际通信之前确定信道,所以可以加快移动站5与数据通信固定站3之间的连接。