公开(公告)号：US08547951B2

公开(公告)日：2013-10-01

申请号：US12791702

申请日：2010-06-01

申请人： Tingfang Ji ,  Ayman Naguib ,  Arak Sutivong ,  Dhananjay Ashok Gore ,  Alexei Gorokhov

发明人： Tingfang Ji ,  Ayman Naguib ,  Arak Sutivong ,  Dhananjay Ashok Gore ,  Alexei Gorokhov

IPC分类号： H04W4/00 ,  H04W72/00 ,  H04B7/216 ,  H04B7/00 ,  H04B1/00 ,  H04J1/00

CPC分类号： H04J11/005 ,  H04B1/7143

摘要： A channel structure has at least two channel sets. Each channel set contains multiple channels and is associated with a specific mapping of the channels to the system resources available for data transmission. Each channel set may be defined based on a channel tree having a hierarchical structure. To achieve intra-cell interference diversity, the channel-to-resource mapping for each channel set is pseudo-random with respect to the mapping for each remaining channel set. In each scheduling interval, terminals are scheduled for transmission on the forward and/or reverse link. The scheduled terminals are assigned channels from the channel sets. Multiple terminals may use the same system resources and their overlapping transmissions may be separated in the spatial domain. For example, beamforming may be performed to send multiple overlapping transmissions on the forward link, and receiver spatial processing may be performed to separate out multiple overlapping transmissions received on the reverse link.

公开(公告)号：US08521213B2

公开(公告)日：2013-08-27

申请号：US13463008

申请日：2012-05-03

申请人： Tingfang Ji ,  Rajat Prakash ,  Alexei Gorokhov ,  Mohammad J. Borran ,  Arumugam Chendamarai Kannan

发明人： Tingfang Ji ,  Rajat Prakash ,  Alexei Gorokhov ,  Mohammad J. Borran ,  Arumugam Chendamarai Kannan

IPC分类号： H04B7/00

CPC分类号： H04W52/247 ,  H04W52/10 ,  H04W52/146 ,  H04W52/244 ,  H04W52/265 ,  H04W52/283 ,  H04W52/362 ,  H04W52/44 ,  H04W52/50

摘要： Systems and methodologies are described that facilitate broadcasting an interference level and adjusting transmit power corresponding to a reverse link in accordance with the interference level. An interference indication can be broadcasted on a broadcast channel in a wireless communication system. In response to the broadcast, mobile devices can adjust transmit power on the reverse link based upon considerations of the interference level. Further, mobile devices can evaluate an initial set point of a transmit power level during periods of inactivity.

摘要翻译： 描述了根据干扰电平有助于广播干扰电平和调整与反向链路相对应的发射功率的系统和方法。 可以在无线通信系统中的广播信道上广播干扰指示。 响应于广播，移动设备可以基于干扰水平的考虑来调整反向链路上的发射功率。 此外，移动设备可以在不活动期间评估发射功率电平的初始设定点。

公开(公告)号：US08442069B2

公开(公告)日：2013-05-14

申请号：US12419831

申请日：2009-04-07

申请人： Tingfang Ji ,  Tao Luo ,  Xiaoxia Zhang

发明人： Tingfang Ji ,  Tao Luo ,  Xiaoxia Zhang

IPC分类号： H04J3/16

CPC分类号： H04W72/082 ,  H04W16/12 ,  H04W84/045

摘要： Systems and methodologies are described that facilitate resource management in a wireless communication system. Various techniques described herein can enable a network cell in a wireless communication system (e.g. a macro cell) to mitigate the effects of interference on other surrounding network cells (e.g., femto cells embedded within the coverage of the macro cell). For example, a network cell can allocate control resources that overlap control resources of a nearby cell and assign resources within the region of overlap only to users that will not cause substantial interference to the nearby cell. As another example, a network cell can utilize a control channelization that partially coincides with a control and/or random access channelization of a nearby cell. The network cell can subsequently elect not to use the control resources in the coinciding region in order to enable the nearby cell to control the effects of interference though data scheduling.

摘要翻译： 描述了促进无线通信系统中的资源管理的系统和方法。 本文描述的各种技术可以使得无线通信系统（例如，宏小区）中的网络小区能够减轻对其他周围网络小区（例如，嵌入在宏小区的覆盖范围内的毫微微小区）的干扰的影响。 例如，网络小区可以分配与附近小区的控制资源重叠的控制资源，并且在重叠区域内的资源仅分配给不会对附近小区造成实质干扰的用户。 作为另一示例，网络小区可以利用与附近小区的控制和/或随机接入信道化部分重合的控制信道化。 网络小区随后可以选择不使用重合区域中的控制资源，以使附近小区能够通过数据调度来控制干扰的影响。

公开(公告)号：US08416736B2

公开(公告)日：2013-04-09

申请号：US12498590

申请日：2009-07-07

申请人： Tingfang Ji ,  Anastasios Stamoulis ,  Dexu Lin

发明人： Tingfang Ji ,  Anastasios Stamoulis ,  Dexu Lin

IPC分类号： H04W40/00

CPC分类号： H04W48/20

摘要： Techniques for managing candidate sets for a user equipment (UE) are described. In an aspect, multiple candidate sets of cells of different classes may be maintained for the UE. Each candidate set may include cells of a particular class. As some examples, the multiple candidate sets may be for cells of different transmit power levels, cells of different association types, cells associated with different resources, etc. The multiple candidate sets may be maintained separately based on applicable criteria and rules. The multiple candidate sets may be used to select a serving cell for the UE and/or for other communication purposes for the UE. In another aspect, one or more candidate sets may be maintained for the UE and may be used for multiple communication purposes for the UE. The multiple communication purposes may include server selection, interference management, measurement reporting, etc.

摘要翻译： 描述用于管理用户设备（UE）的候选集的技术。 在一方面，可以为UE维护不同类别的多个候选的小区组。 每个候选集可以包括特定类的单元。 作为一些示例，多个候选集可以用于不同发射功率电平的小区，不同关联类型的小区，与不同资源相关联的小区等。可以基于适用的标准和规则分别维护多个候选集。 多个候选集可以用于为UE选择服务小区和/或为UE的其他通信目的。 在另一方面，可以为UE维护一个或多个候选集，并且可以为UE的多个通信目的使用。 多种通信目的可能包括服务器选择，干扰管理，测量报告等。

公开(公告)号：US20130051240A1

公开(公告)日：2013-02-28

申请号：US13372078

申请日：2012-02-13

申请人： Kapil Bhattad ,  Wanshi Chen ,  Peter Gaal ,  Stefan Geirhofer ,  Tingfang Ji ,  Juan Montojo

发明人： Kapil Bhattad ,  Wanshi Chen ,  Peter Gaal ,  Stefan Geirhofer ,  Tingfang Ji ,  Juan Montojo

IPC分类号： H04W48/16 ,  H04W24/00

CPC分类号： H04L5/005 ,  H04L5/0023 ,  H04L5/0032 ,  H04L5/0051 ,  H04L5/0057 ,  H04L25/0204 ,  H04L25/0224 ,  H04L25/03866 ,  H04L25/0391 ,  H04W48/08 ,  H04W88/085

摘要： One aspect of the present disclosure provides various configurations of the macro cell and remote radio heads to allow legacy UEs to function, including mapping CRS ports to physical antenna, configuring CSI-RS transmissions and assisting the new UE in identifying remote radio heads.

摘要翻译： 本公开的一个方面提供了宏小区和远程无线电头的各种配置，以允许传统UE工作，包括将CRS端口映射到物理天线，配置CSI-RS传输并协助新UE识别远程无线电头。

公开(公告)号：US20130028182A1

公开(公告)日：2013-01-31

申请号：US13360348

申请日：2012-01-27

申请人： Stefan Geirhofer ,  Tao Luo ,  Wanshi Chen ,  Peter Gaal ,  Hao Xu ,  Kapil Bhattad ,  Tingfang Ji

发明人： Stefan Geirhofer ,  Tao Luo ,  Wanshi Chen ,  Peter Gaal ,  Hao Xu ,  Kapil Bhattad ,  Tingfang Ji

IPC分类号： H04W4/00

CPC分类号： H04L5/0051 ,  H04B7/024 ,  H04B7/0626 ,  H04L1/0026 ,  H04L1/0687 ,  H04L1/0693 ,  H04L5/0023 ,  H04L5/0048 ,  H04W24/10 ,  H04W72/042 ,  H04W84/042

摘要： Certain aspects of the present disclosure provide techniques for implicitly linking aperiodic channel state information (A-CSI) reports to CSI-reference signal (CSI-RS) resources. In an aspect, the UE may be instructed to report on specific CSI-RS resource(s) via explicit signaling in the UE grant. Other aspects disclose techniques for implicit CSI-RS resource selection by the UE that require fewer signaling resources. Instead of explicitly signaling CSI-RS resources to the UE, the UE may implicitly select CSI-RS resource for CSI feedback reporting based on information known to the UE, e.g. a subframe on which a reporting request is received. This may reduce the impact of the additional signaling in the UE grant.

摘要翻译： 本公开的某些方面提供了将非周期性信道状态信息（A-CSI）报告隐含地链接到CSI参考信号（CSI-RS）资源的技术。 在一方面，可以指示UE通过UE授权中的显式信令来报告特定的CSI-RS资源。 其他方面公开了由UE需要较少信令资源的隐性CSI-RS资源选择技术。 代替将CSI-RS资源明确地发送给UE，UE可以基于UE已知的信息，例如隐含地选择用于CSI反馈报告的CSI-RS资源。 接收报告请求的子帧。 这可以减少UE授权中附加信令的影响。

公开(公告)号：US08363603B2

公开(公告)日：2013-01-29

申请号：US11333890

申请日：2006-01-18

申请人： Min Dong ,  Tingfang Ji ,  Dhananjay Ashok Gore ,  Alexei Gorokhov ,  Arak Sutivong

发明人： Min Dong ,  Tingfang Ji ,  Dhananjay Ashok Gore ,  Alexei Gorokhov ,  Arak Sutivong

IPC分类号： H04W4/00

CPC分类号： H04B7/0617 ,  H04B7/0452 ,  H04W16/04 ,  H04W16/28

摘要： Apparatuses and methodologies are described that increase system capacity in a multi-access wireless communication system. Spatial dimensions may be utilized to distinguish between multiple signals utilizing the same channel and thereby increase system capacity. Signals may be separated by applying beamforming weights based upon the spatial signature of the user device-base station pair. Grouping spatially orthogonal or disparate user devices on the same channel facilitates separation of signals and maximization of user device throughput performance. User devices may be reassigned to groups periodically or based upon changes in the spatial relationships between the user devices and the base station.

摘要翻译： 描述了增加多址无线通信系统中的系统容量的装置和方法。 可利用空间维度来区分使用相同信道的多个信号，从而增加系统容量。 可以基于用户设备 - 基站对的空间签名应用波束成形权重来分离信号。 在相同信道上对空间正交或不同用户设备进行分组有助于信号分离和用户设备吞吐量性能的最大化。 用户设备可以周期性地或基于用户设备和基站之间的空间关系的改变重新分配给组。

公开(公告)号：US20120307808A1

公开(公告)日：2012-12-06

申请号：US13462739

申请日：2012-05-02

申请人： Osok Song ,  Rajat Prakash ,  Ajay Gupta ,  Tingfang Ji ,  Masato Kitazoe

发明人： Osok Song ,  Rajat Prakash ,  Ajay Gupta ,  Tingfang Ji ,  Masato Kitazoe

IPC分类号： H04W36/20

CPC分类号： H04W36/0055 ,  H04W72/082 ,  H04W72/1231

摘要： A method of wireless communication determines a UE interference condition during handover. A target cell receives information that indicates an interference condition of a user equipment (UE). Prior to completing handover, the target cell determines an expected UE interference condition that will arise after completing the handover of the UE at a target base station. The information can be determined based on a message from the UE. The UE message may indicate which cell is the strongest, indicate the interference condition at both the source and target cells, or only provide a measurement of the strongest cell. Based on the UE measurements, the target eNodeB may schedule the UE on resources based on the expected interference condition at the UE that may arise after the handover.

摘要翻译： 一种无线通信方法在切换期间确定UE干扰状况。 目标小区接收到指示用户设备（UE）的干扰状况的信息。 在完成切换之前，目标小区确定在目标基站完成UE的切换之后将出现的预期UE干扰条件。 可以基于来自UE的消息来确定信息。 UE消息可以指示哪个小区是最强的，指示源小区和目的小区的干扰条件，或仅提供最强小区的测量。 基于UE测量，目标eNodeB可以基于在切换之后可能出现的UE处的预期干扰条件来调度UE资源。

公开(公告)号：US20120213108A1

公开(公告)日：2012-08-23

申请号：US13401557

申请日：2012-02-21

申请人： Tingfang Ji ,  Peter Gaal ,  Hao Xu ,  Osok Song

发明人： Tingfang Ji ,  Peter Gaal ,  Hao Xu ,  Osok Song

IPC分类号： H04W74/08 ,  H04W4/06 ,  H04W24/00

CPC分类号： H04B7/024

摘要： Wireless networks may include remote radio heads (RRHs) for extending the coverage of a macro cell. The macro cell may be connected to the RRHs, for example, by optical fiber, and there may be negligible latency between the macro cell and the RRHs. RRH deployment with different cell specific RS transmissions may create many cell edges, which may present challenges in idle state mobility. Certain aspects of the present disclosure may utilize coordinated multipoint (CoMP) transmissions for idle user equipment (UE) support and, in some aspects, may introduce new radio link monitoring (RLM) techniques. As a result, the techniques presented herein may help achieve better idle mode performance and/or better RLM performance.

摘要翻译： 无线网络可以包括用于扩展宏小区的覆盖的远程无线电头（RRH）。 宏小区可以例如通过光纤连接到RRH，并且在宏小区和RRH之间可能存在可忽略的等待时间。 具有不同小区特定RS传输的RRH部署可能产生许多小区边缘，这可能在空闲状态移动性方面存在挑战。 本公开的某些方面可以利用用于空闲用户设备（UE）支持的协调多点（CoMP）传输，并且在一些方面可以引入新的无线电链路监视（RLM）技术。 因此，本文介绍的技术有助于实现更好的空闲模式性能和/或更好的RLM性能。

公开(公告)号：US08228853B2

公开(公告)日：2012-07-24

申请号：US12331156

申请日：2008-12-09

申请人： Tingfang Ji ,  Aamod D. Khandekar ,  Naga Bhushan ,  Alexei Y. Gorokhov ,  Avneesh Agrawal

发明人： Tingfang Ji ,  Aamod D. Khandekar ,  Naga Bhushan ,  Alexei Y. Gorokhov ,  Avneesh Agrawal

IPC分类号： H04B7/185 ,  H04W4/00 ,  H04Q7/20

CPC分类号： H04W36/0083 ,  Y02D70/00 ,  Y02D70/1222 ,  Y02D70/1242 ,  Y02D70/1262 ,  Y02D70/142 ,  Y02D70/146

摘要： Techniques for selecting a serving base station for a terminal in a wireless communication network are described. In one design, multiple candidate base stations for the terminal may be identified, with each candidate base station being a candidate for selection as the serving base station for the terminal. The multiple candidate base stations may include base stations with different transmit power levels and/or may support interference mitigation. One of the multiple candidate base stations may be selected as the serving base station. In one design, the serving base station may be selected based on at least one metric for each candidate base station. The at least one metrics may be for pathloss, effective transmit power, effective geometry, projected data rate, control channel reliability, network utility, etc. The selected candidate base station may have a lower SINR than a highest SINR among the multiple candidate base stations.

摘要翻译： 描述了用于在无线通信网络中为终端选择服务基站的技术。 在一种设计中，可以识别用于终端的多个候选基站，其中每个候选基站是用于选择的候选作为终端的服务基站。 多个候选基站可以包括具有不同发射功率电平的基站和/或可以支持干扰减轻。 可以选择多个候选基站中的一个作为服务基站。 在一种设计中，可以基于每个候选基站的至少一个度量来选择服务基站。 所述至少一个度量可以用于路径损耗，有效发射功率，有效几何，投影数据速率，控制信道可靠性，网络效用等。所选择的候选基站可以具有比多个候选基站中的最高SINR更低的SINR 。