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    • 1. 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。
    • 3. 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。
    • 7. 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。
    • 9. 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。
    • 10. 发明申请
    • Communication Path Switching System and Method
    • 通信路径切换系统与方法
    • US20090141674A1
    • 2009-06-04
    • US11576472
    • 2005-10-03
    • Masafumi MasudaAkihiro MaebaraMasayuki KoshinoYasuhiro Kato
    • Masafumi MasudaAkihiro MaebaraMasayuki KoshinoYasuhiro Kato
    • H04W40/00
    • H04W36/12H04W76/20
    • A communication path switching system comprises a wireless base station (21) having a function of wireless communication with a mobile station (11) and a function of relaying data transmitted from the mobile station over a wireless communication path; and plural transmission apparatuses (41, 841) having a function of wired communication with the wireless base station and capable of establishing respectively a wired communication path to be used to relay the data transmitted from a mobile station toward another mobile station. One wired communication path from the wireless base station (21) to one transmission apparatus (841) is switched to another wired communication path from the wireless base station (21) to another transmission apparatus (41) without re-establishing a wireless communication path between the mobile station and the wireless base station.
    • 一种通信路径交换系统包括具有与移动台(11)进行无线通信的功能的无线基站(21)和通过无线通信路径中继从移动台发送的数据的功能; 以及具有与无线基站进行有线通信的功能的多个发送装置(41,4841),能够分别建立用于将从移动台发送的数据向另一个移动台发送的有线通信路径。 从无线基站(21)到一个发送装置(841)的一个有线通信路径被切换到从无线基站(21)到另一个发送装置(41)的另一个有线通信路径,而不会重新建立无线基站 移动台和无线基站。