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    • 5. 发明授权
    • Method and apparatus of a mobile communication system which reduces power consumption by observing only the starting slot on a TDMA radio channel
    • 一种移动通信系统的方法和装置,其通过仅观察TDMA无线电信道上的起始时隙来降低功耗
    • US06819661B2
    • 2004-11-16
    • US08860240
    • 1997-06-10
    • Ichiro OkajimaAkihiro MaebaraAtsushi MuraseKatsumi KobayashiTadao Takami
    • Ichiro OkajimaAkihiro MaebaraAtsushi MuraseKatsumi KobayashiTadao Takami
    • H04B7212
    • H04W52/0216H04W74/04Y02D70/1222
    • Base station generates a mobile station identifier which indicates a mobile station that a data signal is addressed thereto, and a head slot having a data signal when there is a data signal that has a length to be able to transmitted using one slot of a TDMA radio channel. When there is a data signal that has a length to be not able to transmitted using one slot, base station generates a head slot and continuous slots which contain at least a part of data signal. Base station transmits the head slot by using the starting slot which located at predetermined position every mobile station on the TDMA radio channel, and transmits the continuous slots by using slots which follow the starting slot. Mobile station receives the starting slot, and stops reception if the starting slot is not the head slot. If the starting slot is the head slot, the mobile station judges the mobile station identifier. Furthermore, if the mobile station identifier indicates other mobile station, the mobile station stops reception, on the other hand, if the mobile station identifier indicates itself, the mobile station receives the continuous slot.
    • 基站产生指示移动站数据信号被寻址到其上的移动站标识符,以及当有数据信号具有能够使用TDMA无线电的一个时隙发送的长度的数据信号时, 渠道。 当存在长度不能使用一个时隙发送的数据信号时,基站产生包含至少一部分数据信号的头隙和连续时隙。 基站通过使用位于TDMA无线电信道上的每个移动台的预定位置的起始时隙来发送头部时隙,并且通过使用跟随起始时隙的时隙发送连续时隙。 移动台接收起始时隙,如果起始时隙不是前置时隙,则停止接收。 如果起始时隙是头时隙,则移动台判断移动台标识符。 此外,如果移动台标识符指示其他移动台,则移动台停止接收,另一方面,如果移动台标识符表示其本身,则移动台接收连续时隙。
    • 6. 发明授权
    • Communication system and transmission station
    • 通信系统和传输站
    • US06021516A
    • 2000-02-01
    • US786479
    • 1997-01-21
    • Ichiro OkajimaAkihiro MaebaraKatsumi KobayashiKoji SasadaHiroyuki Hattori
    • Ichiro OkajimaAkihiro MaebaraKatsumi KobayashiKoji SasadaHiroyuki Hattori
    • H04L1/00H04L1/16H04L1/18G08C25/02
    • H04L1/1621H04L1/0007H04L1/1809
    • In a communication system having a transmission station which transmits the data signal and a receiving station which receives the data signal, the transmission station consists of an adding means for adding an error detecting code showing a position of a transmission error, which occurs on said data signal, in said data signal to said data signal and a retransmission means for retransmission of a part in said data signal when said receiving station requests the retransmission of the part in said data signal. The receiving station consists of a judgment means for judging a position of the transmission error in said data signal on the basis of the error detecting code which is added by the adding means and a request means for requesting the retransmission of the part containing the transmission error in the data signal on the basis of the position of the transmission error.
    • 在具有发送数据信号的发送站和接收数据信号的接收站的通信系统中,发送站由加法装置构成,该附加装置用于将表示在所述数据上发生的发送错误的位置的错误检测码相加 在所述数据信号中向所述数据信号发送信号;以及重传装置,用于当所述接收站请求所述数据信号中的部分的重传时,重传所述数据信号中的一部分。 接收站包括一个判断装置,用于根据由加法装置相加的检错码和用于请求重发包含发送错误的部分的请求装置判断所述数据信号中的传输错误的位置 在数据信号的基础上根据传输误差的位置。
    • 8. 发明授权
    • Mobile communication system, network and mobile station
    • 移动通信系统,网络和移动台
    • US6157837A
    • 2000-12-05
    • US786480
    • 1997-01-21
    • Yasuhiro KatoAkihiro MaebaraIchiro OkajimaKazuo SugiyamaKoji Sasada
    • Yasuhiro KatoAkihiro MaebaraIchiro OkajimaKazuo SugiyamaKoji Sasada
    • H04W36/08H04Q7/20
    • H04W36/0061
    • An object of the present invention is to reduce the control time required when a channel handover is performed in a mobile communication system. The conventional system has such shortcomings that a long time is required for re-designating a channel when a channel handover procedure results in failure. Particularly, in the common access type system, there is such a problem that since a channel handover is required to be performed several times during a channel handover procedure, an extra time is required for performing the handover procedure. The present invention has a plurality of base stations for covering the service area, and a mobile station for performing a communication with the base stations through radio channels. Here, the present invention is characterized in that the base stations notify the mobile station of a plurality of candidates when the mobile station performs a handover procedure, thereby improving the problem inherent in the conventional system that a single candidate is notified when a channel handover procedure is performed. Therefore, the present invention makes it possible to change the channel to the next candidate channel at high speed when the previous channel handover procedure results in failure.
    • 本发明的目的是减少在移动通信系统中执行信道切换时所需的控制时间。 常规系统具有这样的缺点:当信道切换过程导致故障时,需要很长时间来重新指定信道。 特别地,在公共接入型系统中,存在这样的问题,即由于在信道切换过程中需要多次执行信道切换,所以需要额外的时间来执行切换过程。 本发明具有用于覆盖服务区域的多个基站和用于通过无线电信道与基站进行通信的移动站。 这里,本发明的特征在于,当移动台执行切换过程时,基站通知移动台多个候选,从而改善了常规系统固有的问题,当通道切换程序 被执行。 因此,当先前的信道切换过程导致故障时,本发明使得可以以高速将信道改变为下一个候选信道。
    • 9. 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。
    • 10. 发明授权
    • Paging equipment and method for reducing traffic in a mobile data
communication system
    • 用于减少移动数据通信系统中的业务的寻呼设备和方法
    • US5867779A
    • 1999-02-02
    • US702504
    • 1996-09-04
    • Akitoshi MiyazakiShoichi HirataIchiro OkajimaNoriko Uchida
    • Akitoshi MiyazakiShoichi HirataIchiro OkajimaNoriko Uchida
    • H04W8/04H04W8/22H04W8/24H04W60/00H04W60/06H04W68/00H04W68/12H04W88/06H04W92/18H04Q7/00
    • H04W8/22H04W68/00H04W60/00H04W60/06H04W68/12H04W8/04H04W8/24H04W88/06H04W92/18
    • The communication terminal (102) is provided with a notice unit (204) for recognizing a state of use of itself and states of use of the data terminals (103.sub.1) through (103.sub.n) and notifying a result of the recognition to the network side, whereas the network system (101) is provided with a storage unit (303) for registering a communication terminal in which the communication terminal (102) and at least one of the data terminal (103.sub.1) through (103.sub.n) became usable and deleting the registration of the communication terminal (102) or a communication terminal in which the data terminals (103.sub.1) through (103.sub.n) became unusable, in accordance with a result of the notice made by the notice unit (204), so that a receiving possible state of the communication terminal (102) is preliminarily registered on the side of the network system (101). Moreover, the receiving standby state is discriminated between a voice-only standby state and a voice and packet simultaneous standby state. When the standby state appears to be the former, a voice paging is made and when the latter, a packet paging is made, both by the communication unit (301).
    • PCT No.PCT / JP95 / 02754 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 / 21331 PCT出版物 日期1996年7月11日通信终端(102)设置有用于识别其自身的使用状态和数据终端(1031)至(103n)的使用状态的通知单元(204),并通知识别结果 网络系统(101)具有用于登记通信终端的存储单元(303),其中通信终端(102)和数据终端(1031)至(103n)中的至少一个成为 根据通知单元(204)作出的通知的结果,可以使用和删除通信终端(102)或其中数据终端(1031)至(103n)变得不可用的通信终端的注册,使得 通信终端(102)的接收可能状态被预先登记在网络系统(101)侧。 此外,在仅语音待机状态和语音和分组同时待机状态之间区分接收待机状态。 当待机状态看起来是前者时,进行语音寻呼,而后者则由通信单元(301)进行分组寻呼。