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11. 发明申请

WO2008088961A1 METHOD FOR OPTIMUM BANDWIDTH SELECTION OF TIME-OF-ARRIVAL ESTIMATORS 审中-公开
标题翻译：最佳波段选择时间估计器的方法
公开(公告)号：WO2008088961A1
公开(公告)日：2008-07-24
申请号：PCT/US2008/050399
申请日：2008-01-07
申请人： NTT DOCOMO INC. , CHONG, Chia-chin , WATANABE, Fujio
发明人： CHONG, Chia-chin , WATANABE, Fujio
IPC分类号： H04B7/00
CPC分类号： G01S5/0215 , G01S11/02 , H04W64/003 , H04W72/02
摘要： A method determines an optimum bandwidth that minimizes ranging error in a geolocation application. The method ensures that an optimum bandwidth is selected under all channel conditions (i.e., both line-of-sight (LOS) and non-LOS (NLOS) conditions). Additionally, the method is generic and system-independent, such that it is applicable to both coherent receivers (e.g., match filter (MF) based receivers), non-coherent receivers (e.g., energy detector (ED) based receivers) and any types of time-of-arrival (TOA) estimators (e.g., whether peak-detection or threshold-based TOA estimator), regardless of the signal-to-noise ratios (SNRs) under consideration.
摘要翻译：一种方法确定最小化地理位置应用中的测距误差的最佳带宽。该方法确保在所有信道条件（即，视线（LOS）和非LOS（NLOS）条件）下选择最佳带宽。另外，该方法是通用和系统独立的，使得其适用于相干接收机（例如，基于匹配滤波器（MF）的接收机），非相干接收机（例如基于能量检测器（ED）的接收机））和任何类型到达时间（TOA）估计器（例如，无论是峰值检测还是基于阈值的TOA估计器），与所考虑的信噪比（SNR）无关。

12. 发明申请

WO2008070671A2 METHOD FOR OPTIMUM THRESHOLD SELECTION OF TIME-OF-ARRIVAL ESTIMATORS 审中-公开
标题翻译：时间到达估计器的最佳阈值选择方法
公开(公告)号：WO2008070671A2
公开(公告)日：2008-06-12
申请号：PCT/US2007/086392
申请日：2007-12-04
申请人： NTT DOCOMO INC. , CHONG, Chia-chin , WATANABE, Fujio
发明人： CHONG, Chia-chin , WATANABE, Fujio
IPC分类号： H04L25/06
CPC分类号： G01S5/0221 , H04W64/006
摘要： The following invention relates to geolocation technology. In particular, the proposed method can be used to determine the optimum threshold value that minimizes the estimation error. The proposed method also allows the threshold value to be varied adaptively according to the signal-to-noise ratios (SNRs) under consideration. This is to ensure that the optimum threshold value is being selected under all channel conditions i.e., both line-of-sight (LOS) and non-LOS (NLOS) scenarios. Additionally, the proposed method is generic and system independent in which it can be applied to both coherent (e.g., match filter (MF)) and non-coherent receivers (e.g., energy detector (ED)).
摘要翻译：以下发明涉及地理定位技术。具体而言，所提出的方法可以用于确定使估计误差最小化的最佳阈值。所提出的方法还允许阈值根据所考虑的信噪比（SNR）自适应地变化。这是为了确保在所有信道条件（即，视线（LOS）和非LOS（NLOS）情景）下都正在选择最佳阈值。此外，所提出的方法是通用的并且与系统无关，其中它可以适用于相干（例如，匹配滤波器（MF））和非相干接收机（例如能量检测器（ED））。

13. 发明申请

WO2007076362A2 METHOD AND SYSTEM FOR WIRELESS LAN NETWORK DETECTION 审中-公开
标题翻译：无线局域网网络检测方法与系统
公开(公告)号：WO2007076362A2
公开(公告)日：2007-07-05
申请号：PCT/US2006062309
申请日：2006-12-19
申请人： NTT DOCOMO INC , FU GUANGRUI , WATANABE FUJIO
发明人： FU GUANGRUI , WATANABE FUJIO
IPC分类号： H04B7/185
CPC分类号： H04W48/18 , H04W84/042 , H04W84/12 , H04W88/06 , Y02D70/1224 , Y02D70/1242 , Y02D70/142 , Y02D70/144 , Y02D70/146 , Y02D70/23
摘要： A method and a system discover a wireless LAN network for a multi-mode handset in a power-efficient way. The method extends stand-by time for the cellular and wireless LAN multi-mode handset, taking advantage of that fact that the cellular interface demands less energy from the battery than the wireless LAN (WLAN)-based interface in such a handset. The method therefore uses the cellular interface as an always-on proxy for the wireless LAN interface to receive the initial packets of a communication session, and uses the initial packet or packets to activate the handset's interface with the wireless LAN.
摘要翻译：一种方法和系统以功率高效的方式发现用于多模式手机的无线LAN网络。该方法延长了蜂窝和无线局域网多模手机的待机时间，利用蜂窝接口在这种手机中比无线LAN（WLAN）接口要求的电池能量更少的事实。因此，该方法使用蜂窝接口作为无线LAN接口的始终代理接收通信会话的初始分组，并且使用初始分组或分组激活手机与无线LAN的接口。

14. 发明申请

WO2006138326A1 METHOD AND APPARATUS FOR DORMANT MODE SUPPORT WITH PAGING 审中-公开
标题翻译：用于寻呼方式支持的方法和装置
公开(公告)号：WO2006138326A1
公开(公告)日：2006-12-28
申请号：PCT/US2006/023049
申请日：2006-06-13
申请人： NTT DOCOMO, INC. , JEONG, Moo, Ryong , WATANABE, Fujio , KAWAHARA, Toshiro
发明人： JEONG, Moo, Ryong , WATANABE, Fujio , KAWAHARA, Toshiro
IPC分类号： H04L12/28
CPC分类号： H04W68/00 , H04W36/08 , H04W52/0216 , H04W60/04 , Y02D70/142
摘要： A method and communication system for supporting dormant mode are described. Li one embodiment, the communication system comprises a wireless station operable in a power savings mode and group of access points. Each group of access points comprises one or more access points with at least one group of access points having at least two access points. Ranges for the one or more access points in each of the groups define a paging area for each group, wherein one access point uses a paging channel for paging the wireless station when the wireless station is in the power savings mode and is in the paging area associated with the one access point. The wireless station performs a handoff procedure when the one access point is not in the same group of access points as the access point associated with the wireless station prior to the wireless station entering the power savings mode and does not perform a handoff procedure when the one access point is in the same group of access points as the access point associated with the wireless station prior to the wireless station entering the power savings mode.
摘要翻译：描述了用于支持休眠模式的方法和通信系统。在一个实施例中，通信系统包括可在功率节省模式和接入点组中操作的无线站。每组接入点包括一个或多个接入点，其中至少一组接入点具有至少两个接入点。每个组中的一个或多个接入点的范围定义每个组的寻呼区域，其中当无线站处于省电模式并且处于寻呼区域中时，一个接入点使用寻呼信道来寻呼无线站与一个接入点相关联。当无线站进入省电模式之前，当一个接入点不在与无线站相关联的接入点的接入点不在同一组接入点中时，无线站执行切换过程，并且当一个接入点不执行切换过程时在无线站进入省电模式之前，接入点与与无线站相关联的接入点处于同一组接入点。

15. 发明申请

WO2005046125A1 METHOD FOR SUPPORTING SCALABLE AND RELIABLE MULTICAST IN TDMA/TDD SYSTEMS USING FEEDBACK SUPPRESSION TECHNIQUES 审中-公开
标题翻译：使用反馈抑制技术在TDMA / TDD系统中支持可扩展和可靠的多播的方法
公开(公告)号：WO2005046125A1
公开(公告)日：2005-05-19
申请号：PCT/US2004/034060
申请日：2004-10-14
申请人： DOCOMO COMMUNICATIONS LABORATORIES USA, INC. , GAO, Xia , WATANABE, Fujio , WU, Gangzhu , JAIN, Ravi, Kumar , KAWAHARA, Toshiro
发明人： GAO, Xia , WATANABE, Fujio , WU, Gangzhu , JAIN, Ravi, Kumar , KAWAHARA, Toshiro
IPC分类号： H04L12/18
CPC分类号： H04L12/1868 , H04L1/0057 , H04L1/08 , H04L1/1621 , H04L1/1685 , H04L1/1819 , H04L5/1469 , H04L12/1863 , H04L12/189 , H04W8/26 , H04W74/04 , H04W76/40 , H04W84/00 , H04W84/04 , H04W84/12
摘要： A method supports scalable and reliable multicast in a wireless network with a large bandwidth-delay product. In this method, acknowledgement packets from different receivers experiencing the same number of data packets lost are assigned the same time slots. This method can be combined with other loss recovery techniques, such as forward error correction (FEC) recovery, proactive protection, feedback suppression and collision detection. Scalability is achieved as bandwidth usage relates only to the number of packet s transmitted, rather than the number of receivers.
摘要翻译：一种方法支持具有大带宽延迟产品的无线网络中的可扩展和可靠的组播。在这种方法中，来自经历相同数量数据包丢失的不同接收机的确认分组被分配相同的时隙。该方法可以与其他丢失恢复技术相结合，如前向纠错（FEC）恢复，主动保护，反馈抑制和冲突检测。实现可扩展性，因为带宽使用仅涉及发送的分组数量而不是接收机的数量。

16. 发明申请

WO2004098214A1 FAST ACTIVE SCANNING WIRELESS NETWORK APPARATUS AND METHOD 审中-公开
标题翻译：快速扫描无线网络设备和方法
公开(公告)号：WO2004098214A1
公开(公告)日：2004-11-11
申请号：PCT/US2004/010390
申请日：2004-04-02
申请人： DOCOMO COMMUNICATIONS LABORATORIES USA, INC. , JEONG, Moo Ryong , WATANABE, Fujio , KAWAHARA, Toshiro
发明人： JEONG, Moo Ryong , WATANABE, Fujio , KAWAHARA, Toshiro
IPC分类号： H04Q7/20
CPC分类号： H04W48/14 , H04B7/022 , H04W48/16 , H04W48/20 , H04W74/08 , H04W84/12
摘要： In a fast active scanning wireless network apparatus and method for quick determination of available access points (20), information about a candidate set of available access points (20) is obtained, and a candidate access point is identified from the candidate set. A mobile station (10) then queries the candidate access point with a probe request that designates the candidate access point as a sole responder. The probe request prevents other access points from contending for the medium of communication between the mobile station and the designated sole responder access point by excluding the attempt by other access points (20) to transmit probe responses. The apparatus and method thus increases the probability of a fast and successful probe request from the mobile station and subsequent response from the designated access point (20). The designated access point may also respond with a probe response of high priority, preventing intervention of communication.
摘要翻译：在用于快速确定可用接入点（20）的快速主动扫描无线网络装置和方法中，获得关于可用接入点（20）的候选集合的信息，并且从候选集合识别候选接入点。然后，移动站（10）用指定候选接入点的探测请求作为唯一响应者来查询候选接入点。探测请求通过排除其他接入点（20）发送探测响应的尝试来防止其他接入点竞争移动台和指定的唯一响应者接入点之间的通信介质。因此，装置和方法增加了来自移动台的快速和成功的探测请求的概率以及从指定接入点（20）的后续响应。指定的接入点也可以以高优先级的探测响应进行响应，防止通信干扰。

17. 发明申请

WO2010111037A1 A NON-CYCLIC EVOLVING-TYPE USER RESOURCE STRUCTURE FOR OFDMA BASED SYSTEM WITH NULL GUARD TONES 审中-公开
标题翻译：基于OFDMA系统的非循环演进型用户资源结构
公开(公告)号：WO2010111037A1
公开(公告)日：2010-09-30
申请号：PCT/US2010/026808
申请日：2010-03-10
申请人： NTT DOCOMO, INC. , CHONG, Chia-Chin , MINN, Hlaing , WATANABE, Fujio
发明人： CHONG, Chia-Chin , MINN, Hlaing , WATANABE, Fujio
IPC分类号： H04W72/00
CPC分类号： H04L5/0007 , H04L5/0037 , H04L5/0044
摘要： A non-cyclic evolving-type user resource structure applicable for use in the uplink and the downlink of an OFDMA system with large null guard tones (e.g., a 3GPP LTE system) is provided. In one example, the user resource structure combines the benefits of localized and distributed types of resource structures available in the current baseline 3GPP LTE (Release 8) specifications, and is especially suitable for operating in a fast time-varying channel. In another example, the non-cyclic evolving-type resource structure may be simplified to have no more than three stages: a band-type first stage, a partially evolved-type second stage and an interleaved-type third stage. Depending upon the target or average mobile speed and packet length, the resource structure may even have less than three stages.
摘要翻译：提供了适用于具有大的空保护音调（例如，3GPP LTE系统）的OFDMA系统的上行链路和下行链路中的非循环演进型用户资源结构。在一个示例中，用户资源结构组合了当前基准3GPP LTE（版本8）规范中可用的本地化和分布式资源结构的优点，并且特别适用于在快速时变信道中操作。在另一示例中，非循环演进型资源结构可以被简化为具有不超过三个阶段：频带型第一级，部分演进型第二级和交错型第三级。根据目标或平均移动速度和分组长度，资源结构甚至可能具有不到三个阶段。

18. 发明申请

WO2010085313A1 METHOD AND SYSTEM OF DIFFERENTIAL COMPLEX AND REAL MULTI-CARRIER DEMODULATION 审中-公开
标题翻译：差分复合和真实多载波解调的方法与系统
公开(公告)号：WO2010085313A1
公开(公告)日：2010-07-29
申请号：PCT/US2009/069653
申请日：2009-12-29
申请人： NTT DOCOMO INC. , XU, Huilin , CHONG, Chia-Chin , WATANABE, Fujio
发明人： XU, Huilin , CHONG, Chia-Chin , WATANABE, Fujio
IPC分类号： H03D3/00
CPC分类号： H04L27/2653 , H04L27/2639
摘要： A method and a receiver are provided for demodulating a received multi-carrier modulated signal. The demodulation procedure includes (a) multiplying the received multi-carrier modulated signal with its complex conjugate to obtain a squared signal; (b) multiplying the squared signal with a signal having a frequency (1) to obtain a product signal, where T represents a duration of a symbol in the received multi-carrier modulated signal; and integrating the product signal over the duration T . The signal having a frequency (1) may be a complex signal having the form exp(2) or exp(3), or a cosinusoidal signal having the form cos(2), according to whether the multi-carrier modulated signal is a complex signal or a real signal.
摘要翻译：提供一种用于解调所接收的多载波调制信号的方法和接收机。解调过程包括（a）将接收的多载波调制信号与其复共轭相乘以获得平方信号; （b）将平方信号与具有频率（1）的信号相乘以获得乘积信号，其中T表示接收的多载波调制信号中符号的持续时间; 并且在持续时间T内整合产品信号。具有频率（1）的信号可以是具有形式为exp（2）或exp（3）的复信号，或具有形式为cos（2）的cosinusoidal信号，根据多载波调制信号是复信号还是实信号。

19. 发明申请

WO2009042472A3 A METHOD FOR ARQ-ENABLED PRE-TRANSMISSIONS IN MULTICAST AND BROADCAST SERVICES OF RELAY NETWORKS UTILIZING THE IDLE PERIODS 审中-公开
标题翻译：使用空闲周期的继电网的多媒体和广播服务中的ARQ启用的预传输方法
公开(公告)号：WO2009042472A3
公开(公告)日：2009-05-14
申请号：PCT/US2008076693
申请日：2008-09-17
申请人： NTT DOCOMO INC , GUVENC ISMAIL , JEONG MOO RYONG , WATANABE FUJIO
发明人： GUVENC ISMAIL , JEONG MOO RYONG , WATANABE FUJIO
IPC分类号： H04L1/18 , H04B7/14
CPC分类号： H04L1/02 , H04B7/155 , H04L1/1803 , H04L1/1848 , H04L2001/0093 , H04L2001/0097 , H04W56/00
摘要： A method and apparatus is disclosed herein for transmitting data in a network (e.g., a relay network). In one embodiment, the method comprises performing pre-transmission of a packet to hops to enable the base station and the plurality of hops to transmit the packet synchronously to one or more mobile stations in the wireless communication system; and performing one or more re-transmissions of the packet at a first set of one or more hops in the system during a delay due to pre-transmissions at a second set of one or more hops in the system.
摘要翻译：本文公开的用于在网络（例如，中继网络）中传输数据的方法和装置。在一个实施例中，所述方法包括执行分组的预发送以使所述基站和所述多个跳跃能够同步地发送所述分组到所述无线通信系统中的一个或多个移动台; 以及由于在系统中的一个或多个跳的第二组处的预发送而在延迟期间在系统中的一个或多个跳的第一组处执行所述分组的一个或多个重新发送。

20. 发明申请

WO2008156909A3 A METHOD AND SYSTEM FOR JOINT TIME-OF-ARRIVAL AND AMPLITUDE ESTIMATION BASED ON A SUPER-RESOLUTION TECHNIQUE 审中-公开
标题翻译：基于超分辨率技术的接合时间和幅度估计的方法和系统
公开(公告)号：WO2008156909A3
公开(公告)日：2009-03-12
申请号：PCT/US2008060999
申请日：2008-04-21
申请人： NTT DOCOMO INC , CHONG CHIA-CHIN , WATANABE FUJIO , INAMURA HIROSHI
发明人： CHONG CHIA-CHIN , WATANABE FUJIO , INAMURA HIROSHI
IPC分类号： G01S3/00
CPC分类号： H04L25/0202 , G01S3/043 , G01S5/0215 , G01S5/0221 , G01S11/02 , H04B1/7105 , H04B1/7107 , H04B1/7115
摘要： In a geolocation application, a method is provided to jointly estimate the time-of-arrival (TOA) and the amplitude of a received signal based on super-resolution technique. The super-resolution joint TOA-amplitude estimators are provided based on either the expectation-maximization (EM), parallel-interference-cancellation space-alternating generalized expectation maximization (PIC-SAGE) or serial-interference-cancellation SAGE (SIC-SAGE). The SIC-SAGE estimator minimizes the ranging estimation error especially under a non-line-of-sight (NLOS) condition. The SIC-SAGE estimator is a simplified version of the maximum likelihood estimator with more stable performance in a multipath rich environment, such as the ultra-wideband (UWB) based applications. These techniques provide the following benefits: 1) it is generic, so that signal processing can be deployed on both time-domain (e.g., UWB impulse-radio) and frequency-domain (e.g., multi-band orthogonal frequency-division multiplexing (MB-OFDM)) based transceiver schemes and applicable for both UWB and non-UWB systems; 2) it is robust especially under NLOS condition and multipath rich environment.
摘要翻译：在地理位置应用中，提供了一种基于超分辨率技术共同估计接收信号的时间（TOA）和接收信号幅度的方法。基于期望最大化（EM），并行干扰消除空间交替广义期望最大化（PIC-SAGE）或串行干扰消除SAGE（SIC-SAGE）提供超分辨率联合TOA幅度估计器，。 SIC-SAGE估计器最小化了测距估计误差，特别是在非视距（NLOS）条件下。 SIC-SAGE估计器是最大似然估计器的简化版本，在富路由多环境中具有更稳定的性能，例如基于超宽带（UWB）的应用。这些技术提供以下优点：1）它是通用的，使得信号处理可以在时域（例如，UWB脉冲无线电）和频域上部署（例如，多频带正交频分复用（MB -OFDM））收发器方案，适用于UWB和非UWB系统; 2）特别是在NLOS条件和多路径丰富的环境下，它是强大的。

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