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1. 发明申请

WO2009035952A1 METHOD FOR AN IMPROVED LINEAR LEAST SQUARES ESTIMATION OF A MOBILE TERMINAL'S LOCATION UNDER LOS AND NLOS CONDITIONS AND USING MAP INFORMATION 审中-公开
标题翻译：改进的线性最小二乘法在LOS和NLOS条件下使用移动终端位置的方法和使用地图信息的方法
公开(公告)号：WO2009035952A1
公开(公告)日：2009-03-19
申请号：PCT/US2008/075634
申请日：2008-09-08
申请人： NTT DOCOMO INC. , GUVENC, Ismail , WATANABE, Fujio , INAMURA, Hiroshi
发明人： GUVENC, Ismail , WATANABE, Fujio , INAMURA, Hiroshi
IPC分类号： H04Q7/22
CPC分类号： H04W64/00 , G01S5/0215 , G01S5/14
摘要： A linear least squares (LLS) estimator provides a low complexity estimation of the location of a mobile terminal (MT), using one of the fixed terminals (FTs) as a reference FT to derive a linear model. A method for selecting a reference FT is disclosed, which improves the location accuracy relative to an arbitrary approach to selecting the reference FT. In addition, a covariance-matrix based LLS estimator is proposed in line-of-sight (LOS) and non-LOS (NLOS) environments to further provide accuracy, taking advantage of the correlation of the observations. Different techniques for selecting the reference FT under non-LOS (NLOS) conditions are disclosed. A map-based two-stage LLS estimator assists in selecting the reference FT under NLOS conditions.
摘要翻译：线性最小二乘法（LLS）估计器使用固定终端（FT）中的一个作为参考FT提供对移动终端（MT）的位置的低复杂度估计，以导出线性模型。公开了一种用于选择参考FT的方法，其相对于选择参考FT的任意方法提高了位置精度。此外，在视距（LOS）和非LOS（NLOS）环境中提出了基于协方差矩阵的LLS估计器，以进一步提供准确性，利用观测的相关性。公开了在非LOS（NLOS）条件下选择参考FT的不同技术。基于地图的两级LLS估计器有助于在NLOS条件下选择参考FT。

2. 发明申请

WO2009142954A1 FEMTOCELL CHANNEL ASSIGNMENT AND POWER CONTROL FOR IMPROVED FEMTOCELL COVERAGE AND EFFICIENT CELL SEARCH 审中-公开
标题翻译： FEMTOCELL通道分配和功率控制，用于改进FEMTOCELL覆盖和有效的细胞搜索
公开(公告)号：WO2009142954A1
公开(公告)日：2009-11-26
申请号：PCT/US2009/043573
申请日：2009-05-12
申请人： NTT DOCOMO INC. , GUVENC, Ismail , JEONG, Moo, Ryong , WATANABE, Fujio , INAMURA, Hiroshi
发明人： GUVENC, Ismail , JEONG, Moo, Ryong , WATANABE, Fujio , INAMURA, Hiroshi
IPC分类号： H04W36/00
CPC分类号： H04W16/10 , H04W16/30 , H04W52/243 , H04W52/244 , H04W52/343 , H04W52/40 , H04W72/02 , H04W72/0453 , H04W72/082 , H04W84/045
摘要： A method and a communication system for efficiently managing interference between femtocells and between each femtocell and a macrocell. The disclosed frequency assignment scheme for the femtocells minimizes interference between a femtocell and a macrocell and among different femtocells using a spectrum-sensing technique. The scheme selects a suitable channel from a set of candidate channels and ensures that the femtocell has an acceptable coverage area even when it is close to the macrocell base station. Additionally, the frequency assignment scheme favors a co-channel implementation to take advantage of the hand-off and cell search characteristics. In one embodiment, a joint power control and frequency band assignment technique partitions the coverage area of the macrocell into an inner region, a power control region, and an outer region. Power control may be used within the power-control region while, in the other regions, a fixed transmission power may be used.
摘要翻译：一种用于有效地管理毫微微小区之间以及每个毫微微小区与宏小区之间的干扰的方法和通信系统。所公开的毫微微小区的频率分配方案使用频谱感测技术来最小化毫微微小区和宏小区之间以及不同毫微微小区之间的干扰。该方案从一组候选信道中选择合适的信道，并确保毫微微小区即使在靠近宏小区基站时也具有可接受的覆盖区域。此外，频率分配方案有利于同信道实现以利用切换和小区搜索特性。在一个实施例中，联合功率控制和频带分配技术将宏小区的覆盖区域划分为内部区域，功率控制区域和外部区域。功率控制可以在功率控制区域内使用，而在其它区域中可以使用固定的发射功率。

3. 发明申请

WO2009042472A2 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：一种利用空闲期的中继网络的组播和广播业务中的ARQ使能的前发送的方法
公开(公告)号：WO2009042472A2
公开(公告)日：2009-04-02
申请号：PCT/US2008/076693
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： H04W4/00
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：这里公开了一种用于在网络（例如，中继网络）中传输数据的方法和装置。在一个实施例中，该方法包括执行分组的预先传输以跳跃以使基站和多个跳跃同步地向无线通信系统中的一个或多个移动台传输分组; 以及在由于系统中第二组一个或多个中继段处的预传输而导致的延迟期间，在系统中的第一组一个或多个中继段处执行分组的一次或多次重传。

4. 发明申请

WO2009006092A1 METHOD AND SYSTEM FOR A RELIABLE RELAY-ASSOCIATED AND OPPORTUNISTIC COOPERATIVE TRANSMISSION SCHEMES 审中-公开
标题翻译：可靠的中继和机会合作传输方案的方法和系统
公开(公告)号：WO2009006092A1
公开(公告)日：2009-01-08
申请号：PCT/US2008/067990
申请日：2008-06-24
申请人： NTT DOCOMO INC. , WANG, Dandan , CHONG, Chia-chin , GUVENC, Ismail , WATANABE, Fujio
发明人： WANG, Dandan , CHONG, Chia-chin , GUVENC, Ismail , WATANABE, Fujio
IPC分类号： H04B7/00 , H04B15/00
CPC分类号： H04B7/026 , H04B7/15592
摘要： A cooperative communication scheme is provided for a base station (BS) to communicate with a mobile station (MS) through a group of relay stations (RSs) The RSs serve the same target MS To ensure that reliable transmission exists between the BS and the RSs, the BS initially sends the information to all the RSs in the group The RSs then feedback their reliability values to the BS in a message If the reliability metric is greater than or equal to a threshold value, the RSs are considered reliable The reliable RSs transmit their information to the MS using a cooperative multicast transmission mode Meanwhile, the unreliable RSs within the relay group overhear the transmissions between the reliable RSs and the target MS The unreliable RSs that receive overheard packets correctly can join the cooperative transmission to provide a higher cooperative diversity gam to the target MS.
摘要翻译：提供了一种协作通信方案，用于基站（BS）通过一组中继站（RS）与移动台（MS）通信.RSs服务于相同的目标MS。为了确保BS和RS之间存在可靠的传输 BS最初将信息发送给组中的所有RS。然后，RS在消息中将其可靠性值反馈给BS。如果可靠性度量值大于或等于阈值，则将RS视为可靠可靠的RS传输它们使用协作多播传输模式向MS发送信息。同时，中继组内的不可靠RS会听到可靠的RS和目标MS之间的传输。正确接收到数据包的不可靠的RS可以加入协作传输，提供更高的协作分集 gam到目标MS。

5. 发明申请

WO2011123466A1 SYSTEM AND METHOD FOR INTER-CELL INTERFERENCE AVOIDANCE IN CO-CHANNEL NETWORKS 审中-公开
标题翻译：系统和方法用于同信道网络中的细胞间干扰避免
公开(公告)号：WO2011123466A1
公开(公告)日：2011-10-06
申请号：PCT/US2011/030385
申请日：2011-03-29
申请人： NTT DOCOMO, INC. , GUVENC, Ismail , WATANABE, Fujio , JEONG, Moo, Ryong
发明人： GUVENC, Ismail , WATANABE, Fujio , JEONG, Moo, Ryong
IPC分类号： H04W16/14
CPC分类号： H04W72/1231 , H04L5/0032 , H04L5/0058
摘要： Systems and methods are provided for a distributed inter-cell interference avoidance (ICIA) technique for avoiding co-channel interference between femtocell networks and macrocell networks. At the macrocell, user equipments sense the downlink (DL) spectrum and detects whether there are any nearby interfering femtocells. If there is any interference, a macrocell base station appropriately re-schedules the DL resources and also uses a mapping function to re-schedule uplink (UL) resources based on the re-scheduled DL resources. At the femtocell, a femtocell base station senses the UL spectrum to detect for interference from nearby macrocell users. If there is interference, femtocell gives priority to the macrocell by releasing UL resources. Femtocell may also use the same mapping function to obtain the DL resources used by the macrocell and to re-schedule DL resources of the femtocell to avoid using the DL resources of the macrocell.
摘要翻译：提供了用于分散小区间干扰避免（ICIA）技术的系统和方法，用于避免毫微微小区网络与宏小区网络之间的同信道干扰。在宏小区，用户设备检测下行链路（DL）频谱，并检测是否有任何附近的干扰毫微微小区。如果存在干扰，则宏小区基站适当地重新调度DL资源，并且还使用映射函数来基于重新调度的DL资源重新调度上行链路（UL）资源。在毫微微小区，毫微微小区基站感测到UL频谱以检测来自附近的宏小区用户的干扰。如果存在干扰，则通过释放UL资源，毫微微小区优先考虑宏小区。毫微微小区也可以使用相同的映射函数来获得由宏小区使用的DL资源，并重新调度毫微微小区的DL资源，以避免使用宏小区的DL资源。

6. 发明申请

WO2009058742A2 SYNCHRONIZED MULTI-LINK TRANSMISSION IN AN ARQ-ENABLED MULTI-HOP WIRELESS NETWORK 审中-公开
标题翻译：同步多链路无线网络中的多链路传输
公开(公告)号：WO2009058742A2
公开(公告)日：2009-05-07
申请号：PCT/US2008/081369
申请日：2008-10-27
申请人： NTT DOCOMO, INC. , JEONG, Moo, Ryong , GUVENC, Ismail , WATANABE, Fujio
发明人： JEONG, Moo, Ryong , GUVENC, Ismail , WATANABE, Fujio
IPC分类号： H04W56/00
CPC分类号： H04B7/2606 , H04L1/1877 , H04L1/1887 , H04L2001/0097 , H04W56/0005 , H04W84/20
摘要： A method and apparatus is disclosed herein for synchronized multi-link transmission in an ARQ-enabled multi-hop wireless network. In one embodiment, the method comprises performing pre-transmission of a packet to hops to enable a base station and the plurality of hops in the network 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 set of one or more hops forming a path in the network if time remaining before a synchronized transmission time for the path as a whole is greater than a threshold.
摘要翻译：本文公开了用于支持ARQ的多跳无线网络中的同步多链路传输的方法和设备。在一个实施例中，该方法包括执行分组的预先传输到跳跃，以使基站和网络中的多个跳跃同步地将分组传输到无线通信系统中的一个或多个移动台; 以及如果在作为整体的路径的同步传输时间之前剩余的时间大于阈值，则在形成网络中的路径的一组一个或多个跳点处执行分组的一次或多次重传。

7. 发明申请

WO2008156909A2 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：WO2008156909A2
公开(公告)日：2008-12-24
申请号：PCT/US2008/060999
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： H04L27/28
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。

8. 发明申请

WO2009061660A1 METHOD AND SYSTEM OF THRESHOLD SELECTION FOR RELIABLE RELAY STATIONS GROUPING FOR DOWNLINK TRANSMISSION 审中-公开
标题翻译：用于下行链路传输分组的可靠继电器的阈值选择方法和系统
公开(公告)号：WO2009061660A1
公开(公告)日：2009-05-14
申请号：PCT/US2008/081787
申请日：2008-10-30
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： H04W36/00
CPC分类号： H04B7/024 , H04B7/15592 , H04W16/26
摘要： A relaying selection and cooperative communications method provides a threshold selection criterion for forming a reliable group of relay stations (RSs) based on one or more design criteria. Possible design criteria include an outage probability constraint and a throughput constraint. The threshold value is selected according to, for example, transmission paths (e.g., line-of-sight, obstructed-light-of-sight, non-light-of-sight) or channel conditions (e.g., signal-to-noise-ratio) between the base station (BS) and the RSs (i.e., BS-RSs link) and between the RSs and the mobile station (MS) (i.e., RSs-MS link), respectively.
摘要翻译：中继选择和协作通信方法基于一个或多个设计标准提供用于形成可靠的中继站组（RS）的阈值选择准则。可能的设计标准包括中断概率约束和吞吐量约束。根据例如传输路径（例如，视线，被遮蔽的视野，不可见光）或信道条件（例如，信噪比）来选择阈值，基站（BS）和RS（即BS-RS链路）之间以及RS和移动台（MS）之间的RS（比例）比率）（即，RSs-MS链路）。

9. 发明申请

WO2009059006A1 METHOD AND SYSTEM FOR OPPORTUNISTIC HYBRID RELAY SELECTION SCHEME FOR DOWNLINK TRANSMISSION 审中-公开
标题翻译：用于下行链路传输的机动混合继电器选择方案的方法和系统
公开(公告)号：WO2009059006A1
公开(公告)日：2009-05-07
申请号：PCT/US2008/081791
申请日：2008-10-30
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： H04W36/00
CPC分类号： H04B7/026 , H04B7/15592
摘要： An opportunistic hybrid-relay selection scheme for downlink transmission selects between cooperative relay and single relay schemes based on the channel conditions (e.g., signal-to-noise-ratio (SNR)) between the base station (BS) and RSs (i.e., BS-RSs link) and RSs and mobile station (MS) (i.e., RSs-MS link), respectively. In another selection scheme, a selection between the single relay (e.g., best-relay) transmission scheme or the cooperative-relay transmission scheme may be determined based on transmission paths (e.g., line-of-sight, obstructed-light-of-sight, non-light-of-sight) and channel conditions (e.g., SNR) between the BS-RSs link and the RSs-MS link, respectively.
摘要翻译：用于下行链路传输的机会混合中继选择方案基于基站（BS）和RS之间的信道条件（例如，信噪比（SNR））来选择协作中继和单中继方案之间的选择（即BS -RSs链路）和RSs和移动站（MS）（即RSs-MS链路）。在另一种选择方案中，可以基于传输路径（例如，视线，视障碍的视线）来确定单个中继（例如，最佳中继）传输方案或协作中继传输方案之间的选择，非光线）和BS-RS链路和RS-MS链路之间的信道条件（例如，SNR）。

10. 发明申请

WO2008094858A1 METHOD AND SYSTEM FOR WIRELESS DESIGN SUBJECT TO INTERFERENCE CONSTRAINTS 审中-公开
标题翻译：用于干扰约束的无线设计的方法和系统
公开(公告)号：WO2008094858A1
公开(公告)日：2008-08-07
申请号：PCT/US2008/052186
申请日：2008-01-28
申请人： NTT DOCOMO INC. , PINTO, Pedro, C. , WIN, Moe Z. , WATANABE, Fujio , INAMURA, Hiroshi
发明人： PINTO, Pedro, C. , WIN, Moe Z. , WATANABE, Fujio , INAMURA, Hiroshi
IPC分类号： H04L12/26
CPC分类号： H04W16/22
摘要： A wireless communication system experience interference from other wireless communication networks. A method for designing wireless communication systems subject to interference is proposed based on a realistic interference model which accounts for the propagation effects introduced by the wireless environment (such as path loss, shadowing, and multipath fading), and for the spatial scattering of transmitters (using a Poisson field). The method accounts for tradeoffs between network parameters, such as signal-to-noise ratio (SNR), interference-to-noise ratio (INR), path loss exponent, spatial density of the interferers, and error probability. Advantages of this method include: 1) a unified framework for designing a wireless system, subject to cumulative interference and noise, incorporating a wide range of performance metrics; and 2) a general application that covers a broad class of wireless communication systems and channel fading distributions.
摘要翻译：无线通信系统经受来自其他无线通信网络的干扰。提出了一种用于设计受干扰的无线通信系统的方法，该实际干扰模型考虑了由无线环境引入的传播效应（如路径损耗，阴影和多径衰落）以及发射机的空间散射（使用泊松场）。该方法考虑了网络参数之间的折衷，如信噪比（SNR），干扰信噪比（INR），路径损耗指数，干扰源的空间密度和误差概率。该方法的优点包括：1）设计无线系统的统一框架，受到累积干扰和噪声的影响，并结合广泛的性能指标; 和2）涵盖广泛类别的无线通信系统和信道衰落分布的通用应用。

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