公开(公告)号：US10200166B2

公开(公告)日：2019-02-05

申请号：US13351156

申请日：2012-01-16

Applicant: Wanshi Chen ,  Kapil Bhattad ,  Peter Gaal ,  Tao Luo ,  Xiaoxia Zhang

Inventor： Wanshi Chen ,  Kapil Bhattad ,  Peter Gaal ,  Tao Luo ,  Xiaoxia Zhang

IPC: H04L5/00

Abstract: Certain aspects of the present disclosure relate to techniques for determining resource elements REs used for Coordinated Multipoint (CoMP) transmission schemes. The techniques generally include determining, by a User Equipment (UE), a set of data REs used for Coordinated Multipoint (CoMP) operation. The determination is based on a CoMP scheme and data REs available to particular base stations involved in the CoMP operation. The technique further includes processing data received via the CoMP operation on the determined set of data REs.

公开(公告)号：US09426703B2

公开(公告)日：2016-08-23

申请号：US13349073

申请日：2012-01-12

Applicant: Stefan Geirhofer ,  Tingfang Ji ,  Peter Gaal ,  Aleksandar Damnjanovic ,  Juan Montojo ,  Tao Luo ,  Wanshi Chen ,  Kapil Bhattad

Inventor： Stefan Geirhofer ,  Tingfang Ji ,  Peter Gaal ,  Aleksandar Damnjanovic ,  Juan Montojo ,  Tao Luo ,  Wanshi Chen ,  Kapil Bhattad

IPC: H04W72/08 ,  H04W36/00 ,  H04L25/02 ,  H04L5/00

CPC classification number: H04W36/0077 ,  H04L5/0023 ,  H04L5/0032 ,  H04L5/005 ,  H04L5/0051 ,  H04L5/0057 ,  H04L5/006 ,  H04L25/0226

Abstract: A method, an apparatus, and a computer program product for wireless communication are provided for separating control transmissions and data transmissions within the coverage area of a plurality of transmission/reception points or points that are geographically displaced, the plurality of points comprising a macro node and a plurality of remote radio heads (RRHs) coupled to the macro node. Separating control transmissions and data transmissions in the macro node/RRH configuration may allow UEs to be associated with one set of transmission points for data transmissions and the same set or a different set of transmission points for common control signaling. Separating control transmissions and data transmissions may also allow for faster reconfiguration of antenna ports used for UE data transmission compared with reconfiguration via a handover process.

公开(公告)号：US09179395B2

公开(公告)日：2015-11-03

申请号：US13007950

申请日：2011-01-17

Applicant: Tingfang Ji ,  Peter Gaal ,  Gene Fong ,  Kapil Bhattad ,  Yongbin Wei

Inventor： Tingfang Ji ,  Peter Gaal ,  Gene Fong ,  Kapil Bhattad ,  Yongbin Wei

IPC: H04W72/04 ,  H04W88/08 ,  H04W76/00 ,  H04W48/16 ,  H04L1/18

CPC classification number: H04W36/0061 ,  H04L1/1845 ,  H04L1/1867 ,  H04W36/0016 ,  H04W48/16 ,  H04W56/001

Abstract: Techniques for mitigating data loss during autonomous system information (SI) reading by a user equipment (UE) are described. For autonomous SI reading, the UE may autonomously determine when to read system information from neighbor cells and may not inform a serving cell. In one design, the UE may autonomously select a SI reading gap for reading system information from a neighbor cell. During the SI reading gap, the UE may suspend reception of downlink transmission from the serving cell, receive system information from the neighbor cell, and maintain capability to transmit on the uplink to the serving cell. In one design, the serving cell may determine SI reading gaps autonomously selected by the UE for reading system information from neighbor cells. The serving cell may communicate with the UE by accounting for the SI reading gaps of the UE, e.g., may suspend communication with the UE during the SI reading gaps.

Abstract translation: 描述用于减轻由用户设备（UE）读取的自治系统信息（SI）期间的数据丢失的技术。 对于自主SI读取，UE可以自主地确定何时从相邻小区读取系统信息，并且可以不通知服务小区。 在一种设计中，UE可以自主地选择用于从相邻小区读取系统信息的SI读取间隙。 在SI读取间隙期间，UE可以暂停从服务小区的下行链路传输的接收，从相邻小区接收系统信息，并保持在上行链路上发送到服务小区的能力。 在一种设计中，服务小区可以确定由UE自主选择的用于从相邻小区读取系统信息的SI读取间隙。 服务小区可以通过考虑UE的SI读取间隙来与UE进行通信，例如，可能在SI读取间隙期间暂停与UE的通信。

公开(公告)号：US08971241B2

公开(公告)日：2015-03-03

申请号：US12568242

申请日：2009-09-28

Applicant: Ravi Palanki ,  Kapil Bhattad ,  Naga Bhushan ,  Aamod D. Khandekar ,  Tingfang Ji ,  Juan Montojo

Inventor： Ravi Palanki ,  Kapil Bhattad ,  Naga Bhushan ,  Aamod D. Khandekar ,  Tingfang Ji ,  Juan Montojo

IPC: H04W72/04 ,  H04L1/00 ,  H04W28/00 ,  H04B7/26

CPC classification number: H04L1/0023 ,  H04B7/15557 ,  H04B7/2606 ,  H04J3/08 ,  H04L1/0001 ,  H04L5/0037 ,  H04W4/06 ,  H04W28/00

Abstract: Techniques for supporting operation of relay stations in wireless communication systems are described. In an aspect, a bitmap may be sent by a base station and/or a relay station to identify subframes of at least two types in multiple radio frames. For example, the bitmap may indicate whether each subframe covered by the bitmap is of a first type or a second type. UEs may use the bitmap to control their operation. For example, a UE may perform channel estimation or measurement for the subframes of the first type and may skip channel estimation and measurement for the subframes of the second type. In another aspect, a base station may transmit data and/or control information on resources not used by a relay station to transmit a reference signal. This may avoid interference to the reference signal from the relay station, which may improve performance for UEs communicating with the relay station.

Abstract translation: 描述了用于支持无线通信系统中的中继站的操作的技术。 在一方面，位图可以由基站和/或中继站发送以识别多个无线电帧中的至少两种类型的子帧。 例如，位图可以指示位图所覆盖的每个子帧是否是第一类型或第二类型。 UE可以使用位图来控制它们的操作。 例如，UE可以对第一类型的子帧执行信道估计或测量，并且可以跳过第二类型的子帧的信道估计和测量。 在另一方面，基站可以发送关于中继站未使用的资源的数据和/或控制信息，以发送参考信号。 这可以避免对来自中继站的参考信号的干扰，这可以提高与中继站通信的UE的性能。

公开(公告)号：US08948208B2

公开(公告)日：2015-02-03

申请号：US12611620

申请日：2009-11-03

Applicant: Durga Prasad Malladi ,  Juan Montojo ,  Amir Farajidana ,  Kapil Bhattad

Inventor： Durga Prasad Malladi ,  Juan Montojo ,  Amir Farajidana ,  Kapil Bhattad

IPC: H04L27/26 ,  H04J11/00 ,  H04B7/06

CPC classification number: H04J11/00 ,  H04B7/0617 ,  H04L27/261

Abstract: Systems and methodologies are described that facilitate conveying information utilizing a constant phase offset on Primary Synchronization Signal (PSS). In general, the subject innovation can employ a fixed set of beams and phases in which a PSS and a Secondary Synchronization Signal (SSS) can be transmitted with the fixed set of beams and phases. Furthermore, the phase offset for PSS and SSS can be the same such that legacy user equipment is unaffected or aware of such transmissions.

Abstract translation: 描述了利用主同步信号（PSS）上的恒定相位偏移来传送信息的系统和方法。 通常，本发明可以采用固定的一组波束和相位，其中PSS和次同步信号（SSS）可以用固定的波束和相位组来传输。 此外，PSS和SSS的相位偏移可以相同，使得传统用户设备不受影响或意识到这种传输。

公开(公告)号：US08554147B2

公开(公告)日：2013-10-08

申请号：US12465422

申请日：2009-05-13

Applicant: Kapil Bhattad ,  Ravi Palanki

Inventor： Kapil Bhattad ,  Ravi Palanki

IPC: H04B1/00 ,  H04B15/00

CPC classification number: H04L5/0073 ,  H04L1/0001 ,  H04L1/1867 ,  H04L5/0053 ,  H04W28/04 ,  H04W28/18 ,  H04W72/0406 ,  H04W72/082

Abstract: Systems and methodologies are described that facilitate improved resource partitioning and interference management in a wireless communication system. Techniques are described herein for the transmission and use of various types of signaling, such as Access Request commands, Reverse Link Special Resource Utilization Message (R-SRUM) signaling, Forward Link Special Resource Utilization Message (F-SRUM) signaling, and the like, for managing interference associated with range extension, restricted association networks, and other jamming scenarios. As described herein, downlink resource coordination and interference management are accomplished through the use of Access Request or R-SRUM signaling conducted in a unicast or broadcast fashion, and uplink resource coordination and interference management are accomplished through the use of F-SRUM signaling. As further described herein, a clean communication channel such as a Low Reuse Preamble (LRP) channel can be utilized for interference management signaling and/or leveraged for determining timing of various signaling messages.

Abstract translation: 描述了有助于在无线通信系统中改进资源划分和干扰管理的系统和方法。 本文描述了用于传输和使用各种类型的信令的技术，诸如接入请求命令，反向链路特殊资源利用消息（R-SRUM）信令，前向链路特殊资源利用消息（F-SRUM）信令等等 用于管理与范围扩展相关的干扰，受限关联网络和其他干扰场景。 如本文所述，通过使用以单播或广播方式进行的接入请求或R-SRUM信令来实现下行链路资源协调和干扰管理，并且通过使用F-SRUM信令来实现上行链路资源协调和干扰管理。 如本文进一步描述的，诸如低重用前导码（LRP）信道的干净通信信道可以用于干扰管理信令和/或用于确定各种信令消息的定时。

公开(公告)号：US08463191B2

公开(公告)日：2013-06-11

申请号：US12750423

申请日：2010-03-30

Applicant: Amir Farajidana ,  Alexei Gorokhov ,  Kapil Bhattad

Inventor： Amir Farajidana ,  Alexei Gorokhov ,  Kapil Bhattad

IPC: H04B1/00 ,  H04B15/00

CPC classification number: H04B7/0695 ,  H04B17/26

Abstract: A method for transmission beamforming is disclosed. One or more channel knowledge metrics are obtained for one or more channels. A confidence level of each channel knowledge metric is determined. Beamforming specifications are selected based on the channel knowledge metrics and the confidence levels. A signal stream is transmitted on the one or more channels using the selected beamforming specifications.

Abstract translation: 公开了一种用于发射波束形成的方法。 获得一个或多个信道的一个或多个信道知识度量。 确定每个渠道知识度量的置信水平。 基于信道知识度量和置信水平来选择波束形成规范。 使用所选择的波束成形规格在一个或多个信道上发送信号流。

公开(公告)号：US08428016B2

公开(公告)日：2013-04-23

申请号：US12499425

申请日：2009-07-08

Applicant: Kapil Bhattad ,  Ravi Palanki

Inventor： Kapil Bhattad ,  Ravi Palanki

IPC: H04W40/16

CPC classification number: H04W72/005 ,  H04L1/0003 ,  H04L1/0009 ,  H04L5/0007 ,  H04L5/0053 ,  H04L5/0073 ,  H04W16/10 ,  H04W48/12 ,  H04W72/0453 ,  H04W72/08 ,  H04W84/045

Abstract: Techniques for supporting communication in a dominant interference scenario are described. A user equipment (UE) may communicate with a first base station and may observe high interference from and/or may cause high interference to a second base station. In one design, the first base station may use a first frequency band, which may overlap at least partially with a second frequency band for the second base station and may further extend beyond the second frequency band. The first base station may send at least one synchronization signal and a broadcast channel in a center portion of the first frequency band for use by UEs to detect the first base station. The second frequency band may be non-overlapping with the center portion of the first frequency band. The first base station may also communicate with at least one UE on the first frequency band.

Abstract translation: 描述了支配主导干扰场景中通信的技术。 用户设备（UE）可以与第一基站进行通信，并且可以观察到高干扰和/或可能对第二基站造成高干扰。 在一种设计中，第一基站可以使用第一频带，其可以至少部分地与第二基站的第二频带重叠，并且可以进一步延伸超过第二频带。 第一基站可以在第一频带的中心部分发送至少一个同步信号和广播信道，供UE使用以检测第一基站。 第二频带可以与第一频带的中心部分不重叠。 第一基站还可以与第一频带上的至少一个UE进行通信。

公开(公告)号：US08379583B2

公开(公告)日：2013-02-19

申请号：US12695571

申请日：2010-01-28

Applicant: Alexei Y. Gorokhov ,  Amir Farajidana ,  Kapil Bhattad ,  Ravi Palanki ,  Juan Montojo

Inventor： Alexei Y. Gorokhov ,  Amir Farajidana ,  Kapil Bhattad ,  Ravi Palanki ,  Juan Montojo

IPC: H04W4/00 ,  H04B1/00

CPC classification number: H04L5/0003 ,  H04L5/0014 ,  H04L5/0037 ,  H04L5/0091 ,  H04L25/0202 ,  H04L25/0224

Abstract: Aspects are disclosed for multiplexing disparate wireless terminals. Resource blocks are mapped according to a hopping pattern. A first and second pair of physical resource blocks are allocated such that the first pair is associated with a first hopping index pair, whereas the second pair is associated with a second hopping index pair. For this embodiment, the first and second hopping index pairs are inversely symmetrical to each other. A pair of distributed resource blocks is also allocated. An assignment is then scheduled that includes a physical resource allocation and a virtual resource allocation. Aspects for operating a wireless terminal are also disclosed. Here, a communication that includes a resource allocation and a reference signal is received. A minimum resource allocation granularity is ascertained from the communication, and a joint channel estimation is based on the reference signal and is a function of the minimum resource allocation granularity.

Abstract translation: 公开了用于复用不同的无线终端的方面。 根据跳频模式映射资源块。 分配第一和第二对物理资源块，使得第一对与第一跳跃索引对相关联，而第二对与第二跳跃索引对相关联。 对于该实施例，第一和第二跳变指数对彼此是反对称的。 还分配了一对分布式资源块。 然后调度包括物理资源分配和虚拟资源分配的分配。 还公开了用于操作无线终端的方面。 这里，接收包括资源分配和参考信号的通信。 从通信确定最小资源分配粒度，并且联合信道估计基于参考信号，并且是最小资源分配粒度的函数。

公开(公告)号：US20130010707A1

公开(公告)日：2013-01-10

申请号：US13338077

申请日：2011-12-27

Applicant: Peter Gaal ,  Juan Montojo ,  Kapil Bhattad

Inventor： Peter Gaal ,  Juan Montojo ,  Kapil Bhattad

IPC: H04W72/04

CPC classification number: H04W68/00 ,  H04L5/003 ,  H04W72/04 ,  H04W72/0446

Abstract: A UE or eNnodeB receives a paging configuration or channel state information reference signal (CSI-RS) configuration of a neighbor cell. The configuration enables calculating when the CSI-RS or muting of the neighbor cell will occur.

Abstract translation: UE或eNnodeB接收相邻小区的寻呼配置或信道状态信息参考信号（CSI-RS）配置。 该配置使得能够计算何时将发生相邻小区的CSI-RS或静音。