公开(公告)号：US20130072184A1

公开(公告)日：2013-03-21

申请号：US13700125

申请日：2011-05-27

申请人： Yoshimasa Kusano ,  Chiharu Yamazaki ,  Taku Nakayama ,  Shingo Joko ,  Kazutaka Nakamura

发明人： Yoshimasa Kusano ,  Chiharu Yamazaki ,  Taku Nakayama ,  Shingo Joko ,  Kazutaka Nakamura

IPC分类号： H04W16/18

CPC分类号： H04W16/28 ,  H04W24/02 ,  H04W28/04 ,  H04W36/00 ,  H04W92/20

摘要： Upon receipt of an RLF Indication message indicating a failure in a handover where a radio base station eNB10-1 is the handover source from the other radio base station eNB, the radio base station eNB10-1 can recognize that its coverage is not adjusted appropriately by referring to the RLF Indication message. Moreover, the radio base station eNB10-1 can adjust coverage appropriately by expanding the radiation area of the antenna 101 whose radiation area is directed toward the other radio base station eNB being the handover target, among the antennas 101 included in the radio base station eNB10-1.

摘要翻译： 无线基站eNB10-1接收到指示无线基站eNB10-1为无线基站eNB10-1为无线基站eNB10-1为切换源的切换中的故障的RLF指示消息时，能够通过 参考RLF指示消息。 此外，无线基站eNB10-1可以通过扩大辐射区域朝向作为切换目标的其他无线基站eNB的天线101的辐射面积适当地调整覆盖，包括在无线基站eNB10中的天线101 -1。

公开(公告)号：US20130005379A1

公开(公告)日：2013-01-03

申请号：US13634517

申请日：2011-03-09

申请人： Chiharu Yamazaki

发明人： Chiharu Yamazaki

IPC分类号： H04W72/04

CPC分类号： H04W72/082 ,  H04W52/143 ,  H04W72/0426 ,  H04W84/045

摘要： A wireless communication system (1) comprises: a low-power base station (100); a wireless terminal (300) which is connected to the low-power base station (100); a high-power base station (200) having a greater transmission output than the low-power base station (100); and wireless terminals (400, 401) which are connected to the high-power base station (200). The low-power base station (100) transmits resource allocation information, which indicates the state of wireless resource allocation to the wireless terminal (300) by the low-power base station (100), to the high-power base station (200). The high-power base station (200) carries out suitable communication control of and/or wireless resource allocation to the wireless terminals (400, 401), on the basis of the received resource allocation information.

摘要翻译： 无线通信系统（1）包括：低功率基站（100）; 连接到低功率基站（100）的无线终端（300）; 具有比所述低功率基站（100）更大的发送输出的高功率基站（200）; 以及连接到大功率基站（200）的无线终端（400,401）。 低功率基站（100）向高功率基站（200）向低功率基站（100）发送指示无线终端（300）的无线资源分配状态的资源分配信息， 。 高功率基站（200）基于接收到的资源分配信息，对无线终端（400,401）进行适当的通信控制和/或无线资源分配。

公开(公告)号：US08224331B2

公开(公告)日：2012-07-17

申请号：US12443399

申请日：2007-09-26

申请人： Takeshi Toda ,  Taku Nakayama ,  Shingo Joko ,  Chiharu Yamazaki

发明人： Takeshi Toda ,  Taku Nakayama ,  Shingo Joko ,  Chiharu Yamazaki

IPC分类号： H04W72/00

CPC分类号： H04W48/16

摘要： The present invention relates to a cell search method for a multiband radio communication system including a mobile station and multiple base stations. The method includes the steps of: classifying base station information into multiple first categories on the basis of a cell size of each base station, the base station information being information on the base stations; classifying the base station information into multiple second categories on the basis of a radio-frequency band of each base station; associating movement speeds with the respective first categories and with the respective second categories; acquiring a movement speed of the mobile station; selecting at least one of the first categories and at least one of the second categories on the basis of the acquired movement speed and the associations between the movement speeds and the respective first and second categories; creating a base station list on the basis of base station information which belongs to the selected first category and base station in information which belongs to the selected second category, the base station list being to be notified to the mobile station; notifying the mobile station of the base station list; and causing the mobile station to perform a cell search on the basis of the notified base station list.

摘要翻译： 本发明涉及一种包括移动站和多个基站的多频无线电通信系统的小区搜索方法。 该方法包括以下步骤：基于每个基站的小区大小将基站信息分类为多个第一类别，基站信息是基站信息; 基于每个基站的射频频带将基站信息分类为多个第二类别; 将移动速度与各自的第一类别和相应的第二类别相关联; 获取移动台的移动速度; 基于获取的移动速度和移动速度与相应的第一和第二类别之间的关联来选择第一类别和第二类别中的至少一个类别中的至少一个; 基于属于所选择的第一类别的基站信息和属于所选择的第二类别的信息来创建基站列表，将基站列表通知给移动台; 通知移动台的基站列表; 并且使得移动台基于所通知的基站列表执行小区搜索。

公开(公告)号：US20120099512A1

公开(公告)日：2012-04-26

申请号：US13379577

申请日：2010-06-25

申请人： Chiharu Yamazaki

发明人： Chiharu Yamazaki

IPC分类号： H04W4/06

CPC分类号： H04W52/40 ,  H04B7/022 ,  H04W72/044

摘要： A radio communication system (1) wherein a radio base station (BS1), which allocates to a radio terminal (UE1) a radio resource specified by the combination of a frequency and a time, and a radio base station (BS2), which allocates to the radio terminal (UE1) the same radio resource, use this radio resource to perform a cooperative communication with the radio terminal (UE1). In the radio communication system (1), if a predetermined condition, which indicates that the status of the communication between the radio base station (BS2) and the radio terminal (UE1) is good, is satisfied and further if a propagation path quality (Q2) between the radio base station (BS1) and a radio terminal (UE2) is better than a propagation path quality (Q1) between the radio base station (BS1) and the radio terminal (UE1), then the radio base station (BS1) allocates the foregoing radio resource to the radio terminal (UE2) instead of the radio terminal (UE1).

摘要翻译： 1.一种无线通信系统（1），其中，向无线终端（UE1）分配由频率和时间的组合指定的无线资源的无线基站（BS1）和分配了无线基站（BS2）的无线基站 向无线终端（UE1）发送同一无线资源，使用该无线资源与无线终端（UE1）进行协作通信。 在无线通信系统（1）中，如果满足表示无线基站（BS2）与无线终端（UE1）之间的通信状态良好的预定条件，并且如果传播路径质量（ 无线基站（BS1）与无线终端（UE2）之间的通信质量（Q2）优于无线基站（BS1）与无线终端（UE1）之间的传播路径质量（Q1），则无线基站 ）将无线资源分配给无线终端（UE2）而不是无线终端（UE1）。

公开(公告)号：US20110009064A1

公开(公告)日：2011-01-13

申请号：US12810500

申请日：2008-12-05

申请人： Chiharu Yamazaki ,  Shigeru Kimura ,  Fangwei Tong

发明人： Chiharu Yamazaki ,  Shigeru Kimura ,  Fangwei Tong

IPC分类号： H04B15/00 ,  H04B7/00

CPC分类号： H04B7/0413 ,  H04L25/0222

摘要： A wireless communication apparatus 100 according to the present invention is provided with a reception channel coefficient variation calculation unit 130-1, . . . for calculating a variation of a reception channel coefficient calculated by a reception channel coefficient calculation unit 120-1, . . . , a transmission channel coefficient calculation unit 140-1, . . . for calculating a transmission channel coefficient at transmission by extrapolation based on the variation of the reception channel coefficient, a correction coefficient memory unit 150-1 for storing a correction coefficient based on the variation of the reception channel coefficient at reception for correcting the transmission channel coefficient at transmission, and a correction unit 170-11, . . . for correcting the transmission channel coefficient at transmission calculated by the transmission channel coefficient calculation unit 140-1, . . . based on the correction coefficient stored in the correction coefficient memory unit 150-1.

摘要翻译： 根据本发明的无线通信设备100具有接收信道系数变化计算单元130-1，...。 。 。 用于计算由接收信道系数计算单元120-1计算的接收信道系数的变化。 。 。 ，传输信道系数计算单元140-1，...。 。 。 用于基于接收信道系数的变化来计算通过外推发送的传输信道系数;校正系数存储单元150-1，用于基于接收时的接收信道系数的变化来存储校正系数，以校正传输信道系数 在发送时，以及校正单元170-11。 。 。 用于校正由传输信道系数计算单元140-1计算的传输中的传输信道系数。 。 。 基于存储在校正系数存储单元150-1中的校正系数。