利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

46 条记录 (耗时 0.022 秒)

    Mobile node, mobile communication system, and communication control program
    4.
    发明公开
    Mobile node, mobile communication system, and communication control program 有权
    移动结，移动通信系统，以及通信控制程序

    公开(公告)号：EP1345463A3

    公开(公告)日：2006-01-11

    申请号：EP03005732.7

    申请日：2003-03-13

    申请人： NTT DoCoMo, Inc.

    发明人： Omae, Koji ,  Takahashi, Hideaki ,  Okajima, Ichiro ,  Umeda, Narumi

    IPC分类号： H04Q7/38

    CPC分类号： H04L29/06 ,  H04L69/16 ,  H04L69/163 ,  H04W36/0011 ,  H04W36/02 ,  H04W40/36 ,  H04W80/04

    摘要： In a state I, a link layer of a mobile host is connected to an access router and a default router is set to the access router such that data packets (P1) and (P2) reach the access router and are routed to a correspondent host. In states II and III, data packets (P3) to (P8) are not transmitted but are buffered. When the mobile host switches the default router from the access router to an access router upon reception of a router advertisement from the access router, processing moves to a state IV and the buffered data packets (P3) to (P8) are transmitted. Since the link layer of the mobile host is connected to the access router and the default router is set to the access router, the data packets (P3) to (P8) reach the access router and are routed to the correspondent host.

    Mobile node, mobile communication system, and communication control program
    7.
    发明公开
    Mobile node, mobile communication system, and communication control program 有权
    Mobiler Knoten，Mobilkommunikationssystem和und Kommunikationssteuerungsprogramm

    公开(公告)号：EP1345463A2

    公开(公告)日：2003-09-17

    申请号：EP03005732.7

    申请日：2003-03-13

    申请人： NTT DoCoMo, Inc.

    发明人： Omae, Koji ,  Takahashi, Hideaki ,  Okajima, Ichiro ,  Umeda, Narumi

    IPC分类号： H04Q7/38

    CPC分类号： H04L29/06 ,  H04L69/16 ,  H04L69/163 ,  H04W36/0011 ,  H04W36/02 ,  H04W40/36 ,  H04W80/04

    摘要： In a state I, a link layer of a mobile host is connected to an access router and a default router is set to the access router such that data packets (P1) and (P2) reach the access router and are routed to a correspondent host. In states II and III, data packets (P3) to (P8) are not transmitted but are buffered. When the mobile host switches the default router from the access router to an access router upon reception of a router advertisement from the access router, processing moves to a state IV and the buffered data packets (P3) to (P8) are transmitted. Since the link layer of the mobile host is connected to the access router and the default router is set to the access router, the data packets (P3) to (P8) reach the access router and are routed to the correspondent host.

    摘要翻译： 在状态I中，移动主机的链路层连接到接入路由器，并且将默认路由器设置为接入路由器，使得数据分组（P1）和（P2）到达接入路由器并被路由到通信主机 。 在状态II和III中，数据包（P3）到（P8）不被发送，而是被缓存。 当移动主机从接入路由器接收到路由器通告时将默认路由器从接入路由器切换到接入路由器，处理进入状态IV，并且发送缓冲的数据分组（P3）至（P8）。 由于移动主机的链路层连接到接入路由器，并且默认路由器设置为接入路由器，所以数据包（P3）到（P8）到达接入路由器并被路由到对端主机。

    Method and apparatus for stabilizing communication in mobile communication system
    8.
    发明公开
    Method and apparatus for stabilizing communication in mobile communication system 有权
    einem移动通信系统中的Verfahren und Einrichtung zur Kommunikationsstabilizierung

    公开(公告)号：EP1113681A2

    公开(公告)日：2001-07-04

    申请号：EP00311729.8

    申请日：2000-12-28

    申请人： NTT DoCoMo, Inc.

    发明人： Okajima, Ichiro ,  Umeda, Narumi ,  Suzuki, Yoshifumi ,  Yamao, Yasushi

    IPC分类号： H04Q7/30 ,  H04B7/02

    CPC分类号： H04B7/022 ,  H04B7/026 ,  H04W92/20

    摘要： A mobile communication system (1) is provided including a plurality of base stations (11-29) placed in a communication service area and connected to a network (10), in which a mobile station (30) communicates with a second station through the plurality of base stations (11-29) and the network (10). The mobile communication system (1) determines a virtual base station group, that is, an aggregation of the plurality of base stations communicating with the mobile station (30), based on a condition of a radio transmission path between the mobile station (30) and each base station (11-29), and combines information received by the plurality of base stations (15, 19, 20, 24) that belong to the virtual base station group at a base station included in the virtual base station group, characterized in that the network (10) connects the plurality of base stations (11-29) non-hierarchically, characterized in that the base station transmits combined information to the second station through the network (10).
    In such a system, the base stations (15, 19, 20, 24) belonging to the virtual base station group are not limited to specific base stations when the mobile station (30) moves in the communication service area. Accordingly, communication between a moving mobile station (30) and the base stations (11-29) is stabilized. Additionally, a single base station belonging to the virtual base station group executes processes related to communication between the mobile station (30) and the second station. Accordingly, execution of such processes is not concentrated in a single communication node, even if the number of base stations placed in the communication service area increases.

    摘要翻译： 提供一种移动通信系统（1），其包括放置在通信服务区域中并连接到网络（10）的多个基站（11-29），其中移动站（30）通过所述网络与第二站通信 多个基站（11-29）和网络（10）。 移动通信系统（1）基于移动站（30）之间的无线传输路径的状况，确定虚拟基站组，即与移动站（30）通信的多个基站的聚合， 和每个基站（11-29），并且组合由虚拟基站组中包括的基站处于属于虚拟基站组的多个基站（15,19,20,24）接收的信息，其特征在于 因为网络（10）非层次地连接多个基站（11-29），其特征在于，基站通过网络（10）将组合信息发送到第二站。 在这样的系统中，属于虚拟基站组的基站（15,19,20,24）不限于移动台（30）在通信服务区域内移动的特定基站。 因此，移动移动站（30）与基站（11-29）之间的通信是稳定的。 另外，属于虚拟基站组的单个基站执行与移动站（30）和第二站之间的通信相关的处理。 因此，即使放置在通信服务区域中的基站的数量增加，这种处理的执行也不集中在单个通信节点中。

    Mobile unit, server and method of providing information
    10.
    发明公开
    Mobile unit, server and method of providing information 有权
    Mobile Einheit，服务器和Verfahren zur Bereitstellung von Informationen

    公开(公告)号：EP1460873A1

    公开(公告)日：2004-09-22

    申请号：EP04006421.4

    申请日：2004-03-17

    申请人： NTT DoCoMo, Inc.

    发明人： Ikeda, Takehiro ,  Omae, Koji ,  Okajima, Ichiro

    IPC分类号： H04Q7/38 ,  H04Q7/32

    CPC分类号： H04W48/18 ,  H04W64/00 ,  H04W88/06

    摘要： A mobile unit 10 according to the present invention is capable of communication using a plurality of communication subsystems. Usability determination section 13 determines usability of the plurality of communication subsystems at the current location of the mobile unit 10 based on the electrical field intensity of a wireless LAN and the electrical field intensity of a mobile unit telephone network. A communication subsystem selection section 14 selects a communication subsystem whereby the current location can be measured with highest accuracy, of the communication subsystems that are determined as being usable. For example, if the mobile telephone subsystem is selected, the mobile telephone network communication section 15 infers the current location of the mobile unit 10 and transmits the result of determination of usability, together with information indicating the current location, to the address of an information provision server 20. Afterthis, themobile unit 10 looks up the result of determination of usability from a plurality of mobile units that is stored in the information provision server 20.

    摘要翻译： 根据本发明的移动单元10能够使用多个通信子系统进行通信。 可用性确定部分13基于无线LAN的电场强度和移动单元电话网络的电场强度来确定移动单元10的当前位置处的多个通信子系统的可用性。 通信子系统选择部分14选择通信子系统，从而可以以确定为可用的通信子系统以最高精度测量当前位置。 例如，如果移动电话子系统被选择，则移动电话网络通信部分15推断移动单元10的当前位置，并将可用性的确定结果连同指示当前位置的信息一起发送到信息的地址 此后，移动单元10从存储在信息提供服务器20中的多个移动单元查找可用性的确定结果。