公开(公告)号：EP1113586B1

公开(公告)日：2005-12-14

申请号：EP00311725.6

申请日：2000-12-28

申请人： NTT DoCoMo, Inc.

发明人： Ishii, Minami ,  Nakamura, Takehiro

IPC分类号： H04B1/707

CPC分类号： H04B1/7113

摘要： A path timing detecting method and a base station are provided which can improve the accuracy of detecting the path timings and check an increase in the processing load in the random access in a mobile communications system. First, the method identifies the effective path timing range using a preamble (A), followed by detecting effective path timings in the identified path timing range at reception of a message (C), enabling the method to carry out detection of the path timings at accuracy higher than a conventional method that detects the paths using only the preamble. Besides, identifying the searching range at the reception of the preamble (A) makes it possible to reduce the processing load as compared with a method that detects the path timings from the entire searching range corresponding to a cell radius.

公开(公告)号：EP1193992B1

公开(公告)日：2005-04-13

申请号：EP01308371.2

申请日：2001-10-01

申请人： NTT DoCoMo, Inc.

发明人： Ishikawa, Yoshihiro ,  Onoe, Seizo ,  Satoh, Takaaki ,  Nakamura, Takehiro

IPC分类号： H04Q7/38

CPC分类号： H04W28/16 ,  H04W24/08 ,  H04W24/10 ,  H04W72/00 ,  H04W72/04 ,  H04W72/0413

公开(公告)号：EP0843497B1

公开(公告)日：2005-01-26

申请号：EP97120005.0

申请日：1997-11-14

申请人： NTT DoCoMo, Inc.

发明人： Tanno, Motohiro ,  Nakamura, Takehiro ,  Onoe, Seizo

IPC分类号： H04Q7/38 ,  H04Q7/32 ,  H04B7/26

CPC分类号： H04W68/02 ,  H04W52/0216 ,  H04W68/00

摘要： A paging scheme for a mobile communication system which is capable of suppressing the power consumption of the mobile station by reducing the intermittent ratio while keeping an average time required for the paging shorter than a case of merely increasing a number of time-slots. Each base station transmits a paging channel on which a paging signal for each mobile station is transmitted at intermittent timings, where the paging channel has a data transmission rate higher than a required paging channel rate of the mobile communication system, so as to shorten a transmission time of the paging signal for each mobile station. Then, each mobile station judges a presence or absence of the paging signal for that mobile station by receiving the paging channel at these intermittent timings. The paging channel may have a data transmission rate which is variable. A number of time-slots provided in each frame of the paging channel can be increased so that an intermittent ratio at each mobile station becomes lower, without causing an increase of the average time required for the paging.

摘要翻译： 一种用于移动通信系统中的所有其能够通过减小间歇率，同时保持在所述寻呼比仅仅增加一个数量时隙的情况下更短的所需平均时间抑制移动台的消耗功率的寻呼方案。 每个基站发送的寻呼信道，在其上的每个移动台的寻呼信号在间歇时间内反mitted，其中寻呼信道具有比移动通讯系统的一个必需的寻呼信道速率高的数据传输速率，从而缩短变速器 针对每个移动台的寻呼信号的时间。 然后，每个移动站通过接收在间歇时间内论文寻呼信道判断用于该移动台的寻呼信号的存在或不存在。 寻呼信道可以具有数据传输速率所有这些是可变的。 许多在寻呼信道的每个帧提供的时隙的可如在间歇率做在每个移动台变低，而不会引起增加的对寻呼所要求的平均时间而增加。

公开(公告)号：EP1189359A3

公开(公告)日：2004-11-17

申请号：EP01307934.8

申请日：2001-09-18

申请人： NTT DoCoMo, Inc.

发明人： Tanno, Motohiro ,  Nakamura, Takehiro

IPC分类号： H04B1/707

CPC分类号： H04B1/7077 ,  H04B1/70735 ,  H04B1/708 ,  H04B2201/70702

摘要： The present invention provides a cell search method that can reduce the power consumption of a mobile station. At a first step, averaging is executed over an averaging time T1, and slot boundaries are then detected (step S301). Next, as in conventional examples, a second and a third step are serially executed (steps S303 and S305), and the averaging at the first step continues to be executed concurrently with the operation of the second and third steps (step S309). At step S309, correlation values for slots over an averaging time T1' are averaged, and the averaging is further executed using an already calculated first-step average correlation value, thereby calculating an average correlation value.

公开(公告)号：EP1453331A2

公开(公告)日：2004-09-01

申请号：EP04003557.8

申请日：2004-02-17

申请人： NTT DoCoMo, Inc.

发明人： Umesh, Anil ,  Okawa, Koichi ,  Tanaka, Shinya ,  Nakamura, Takehiro

IPC分类号： H04Q7/30

CPC分类号： H04W72/0466 ,  H04W24/00 ,  H04W88/08

摘要： A base station is configured to transmit a downlink signal to a mobile station located in a sector managed by the base station. The downlink signal is spread using a scrambling code. The base station has a monitor configured to monitor a change of a reception condition of an uplink common channel of the mobile station in the sector, a DOA estimator configured to estimate a direction of arrival of an uplink signal transmitted from the mobile station, in response to the change, an area border setter (3) configured to separate the sector into a plurality of areas, by setting an area border in the sector in accordance with the estimated direction, a scrambling code assigner (2) configured to assign a different scrambling code to each of the separated areas and a spreader configured to spread the downlink signal using the assigned scrambling code in each of the separated areas.

摘要翻译： 基站被配置为向位于由基站管理的扇区中的移动台发送下行链路信号。 使用扰码扩展下行链路信号。 基站具有：监视器，用于监视扇区中的移动站的上行链路公共信道的接收状态的变化; DOA估计器，被配置为估计从移动台发送的上行链路信号的到达方向，作为响应 通过根据所述估计的方向设置所述扇区中的区域边界，配置为将所述扇区分割成多个区域的区域边界设置器（3），被配置为分配不同的加扰 代码分配给每个分离区域，以及扩展器，被配置为使用分配的扰码在每个分离区域中扩展下行链路信号。

公开(公告)号：EP1193992A3

公开(公告)日：2003-02-05

申请号：EP01308371.2

申请日：2001-10-01

申请人： NTT DoCoMo, Inc.

发明人： Ishikawa, Yoshihiro ,  Onoe, Seizo ,  Satoh, Takaaki ,  Nakamura, Takehiro

IPC分类号： H04Q7/38

CPC分类号： H04W28/16 ,  H04W24/08 ,  H04W24/10 ,  H04W72/00 ,  H04W72/04 ,  H04W72/0413

摘要： The present invention maintains the utilization of resources even in spite of the presence of a large number of communications each requiring a large amount of resources under multidimensional traffic conditions. First, the current traffic is measured (step S201). Then, a threshold value is determined on the basis of the amount of resources requested (step S203). Then, the current traffic is compared with the threshold value (step S205). If the measured traffic exceeds the threshold value, it is determined that the request cannot be accepted. In contrast, if the measured traffic is equal to or smaller than the threshold value, it is determined that the request can be accepted, and a process of accepting the resource request is executed to end the entire process (step S207).

公开(公告)号：EP1113586A3

公开(公告)日：2003-01-15

申请号：EP00311725.6

申请日：2000-12-28

申请人： NTT DoCoMo, Inc.

发明人： Ishii, Minami ,  Nakamura, Takehiro

IPC分类号： H04B1/707

CPC分类号： H04B1/7113

摘要： A path timing detecting method and a base station are provided which can improve the accuracy of detecting the path timings and check an increase in the processing load in the random access in a mobile communications system. First, the method identifies the effective path timing range using a preamble (A), followed by detecting effective path timings in the identified path timing range at reception of a message (C), enabling the method to carry out detection of the path timings at accuracy higher than a conventional method that detects the paths using only the preamble. Besides, identifying the searching range at the reception of the preamble (A) makes it possible to reduce the processing load as compared with a method that detects the path timings from the entire searching range corresponding to a cell radius.

公开(公告)号：EP1233641A2

公开(公告)日：2002-08-21

申请号：EP02251016.8

申请日：2002-02-14

申请人： NTT DoCoMo, Inc.

发明人： Ishikawa, Yoshihiro ,  Onoe, Seizo ,  Nakamura, Takehiro ,  Yoshitaka, Hiramoto ,  Sato, Takaaki

IPC分类号： H04Q7/38 ,  H04Q7/30

CPC分类号： H04J13/16 ,  H04B2201/7071 ,  H04W16/14 ,  H04W24/00 ,  H04W72/0466 ,  H04W88/08

摘要： A radio channel setting control method for communications between a base-station apparatus (111) and a mobile-station apparatus (112) in a mobile communications system employing a CDMA scheme comprising the steps of: a) determining whether or not a spread code used for the communications can be allocated; b) determining whether or not a predetermined hardware device can be allocated; c) determining whether or not a radio resource can be allocated; d) setting the radio channel between the base-station apparatus and mobile-station apparatus when it is determined that the spread code, predetermined hardware device and radio resource can be allocated.

摘要翻译： 一种用于采用CDMA方案的移动通信系统中的基站装置（111）和移动台装置（112）之间的通信的无线电信道设置控制方法，包括步骤：a）确定是否使用扩频码 可以分配通信; b）确定是否可以分配预定的硬件设备; c）确定是否可以分配无线电资源; d）当确定可以分配扩展码，预定硬件设备和无线电资源时，设置基站装置和移动台装置之间的无线电信道。

公开(公告)号：EP1189360A2

公开(公告)日：2002-03-20

申请号：EP01307950.4

申请日：2001-09-18

申请人： NTT DoCoMo, Inc.

发明人： Tanno, Motohiro ,  Nakamura, Takehiro

IPC分类号： H04B1/707

CPC分类号： H04B1/7075 ,  H04B1/70735 ,  H04B1/7083 ,  H04B1/709

摘要： The present invention reduces the time required for cell search and increase the accuracy of the cell search by determining, during selection of frame boundaries and a scramble code, whether or not the selection results are correct. A mobile station causes descramblers to descramble a received signal with eight scramble codes. Then, correlators calculate the phases of the scramble codes on the basis of frame boundaries, and despreads the signal with a spreading code for a CPICH. The mobile station performs this operation over a plurality of symbols, and causes averaging process sections to average the results. Then, a peak detector selects a scramble code with which an average correlation coefficient is largest. This maximum average correlation coefficient is output to a detection results judging section, which then calculates the ratio of this value to a reference value calculated inside the mobile station, thereby judging detection results.

摘要翻译： 本发明通过在选择帧边界和扰码期间确定选择结果是否正确来减少小区搜索所需的时间并增加小区搜索的准确性。 移动台使得解扰器用八个扰码解扰接收到的信号。 然后，相关器基于帧边界计算扰码的相位，并且用CPICH的扩展码解扩信号。 移动台通过多个符号执行该操作，并使平均处理部分对结果进行平均。 然后，峰值检测器选择平均相关系数最大的扰码。 该最大平均相关系数被输出到检测结果判定部，检测结果判断部然后计算该值与移动台内计算出的基准值的比例，从而判断检测结果。

公开(公告)号：EP3592096A1

公开(公告)日：2020-01-08

申请号：EP19187296.9

申请日：2007-02-06

申请人： NTT DOCOMO, INC.

发明人： Ishii, Minami ,  Abeta, Sadayuki ,  Nakamura, Takehiro

IPC分类号： H04W74/08

摘要： A mobile station includes an identifier selection unit selecting one identifier among identifiers supplied in advance when the mobile station initiates communications and a connection request signal generation unit generating a connection request signal including the identifier. A radio access network apparatus includes a response signal generation unit, in response to the connection request from the mobile station^ generating a response signal including an identifier assigned by a radio access network system and information indicative of an uplink radio resource assigned for the mobile station and a transmission unit transmitting the response signal to the mobile station transmitting the connection request.