公开(公告)号：US20120051453A1

公开(公告)日：2012-03-01

申请号：US13214024

申请日：2011-08-19

Applicant: Xiliang Luo ,  Peter Gaal ,  Hao Xu ,  Tao Luo ,  Kapil Bhattad ,  Juan Montojo ,  Wanshi Chen

Inventor： Xiliang Luo ,  Peter Gaal ,  Hao Xu ,  Tao Luo ,  Kapil Bhattad ,  Juan Montojo ,  Wanshi Chen

IPC: H04W92/00 ,  H04L27/00

CPC classification number: H04L5/0023 ,  H04B7/0413 ,  H04B7/0456 ,  H04B7/0486 ,  H04L1/0031 ,  H04L1/1896 ,  H04L5/0053 ,  H04L5/0091 ,  H04L25/03343 ,  H04L25/03891 ,  H04W72/042

Abstract: A precoding scheme to accommodate user equipment (UEs) having higher Doppler speeds. In such transmission schemes, a different precoding matrix is applied to each orthogonal frequency division multiplex (OFDM) symbol in the transmission stream. Additionally, a downlink control message format is defined to handle assignment of multiple different transmission schemes using the same message format. The downlink control message format includes a control element in one of the message fields along with a set of parameters specifically applicable to the assigned transmission scheme. Based on the value of this control element, the UE sets the specific transmission scheme and determines a set of interpretation rules uniquely associated with that transmission scheme. Using the interpretation rules, the UE is able to read the set of parameters as applied to the selected transmission scheme.

Abstract translation: 一种用于适应具有更高多普勒速度的用户设备（UE）的预编码方案。 在这种传输方案中，将不同的预编码矩阵应用于传输流中的每个正交频分复用（OFDM）符号。 另外，下行链路控制消息格式被定义为使用相同的消息格式来处理多个不同传输方案的分配。 下行链路控制消息格式包括在消息字段之一中的控制元素以及特定适用于所分配的传输方案的一组参数。 基于该控制元件的值，UE设置特定的传输方案并且确定与该传输方案唯一相关联的一组解释规则。 使用解释规则，UE能够读取应用于所选传输方案的一组参数。

公开(公告)号：US20110310831A1

公开(公告)日：2011-12-22

申请号：US13164551

申请日：2011-06-20

Applicant: Kapil Bhattad ,  Peter Gaal ,  Juan Montojo

Inventor： Kapil Bhattad ,  Peter Gaal ,  Juan Montojo

IPC: H04W72/04

CPC classification number: H04B7/0413 ,  H04L5/0007 ,  H04L5/0044 ,  H04L25/0208

Abstract: Provided is a method for wireless communication which includes determining a data allocation size available for data to be transmitted, determining a bundling size based at least in part on the data allocation size, and precoding at least one reference signal in bundled contiguous resource blocks of the determined bundling size. The at least one reference signal in resource blocks in each bundle are precoded with a common precoding matrix.

Abstract translation: 提供了一种用于无线通信的方法，其包括确定可用于要发送的数据的数据分配大小，至少部分地基于所述数据分配大小来确定捆绑大小，以及对所捆绑的连续资源块中的至少一个参考信号进行预编码 确定捆绑大小。 每个束中的资源块中的至少一个参考信号用公共预编码矩阵进行预编码。

公开(公告)号：US20110292875A1

公开(公告)日：2011-12-01

申请号：US13117033

申请日：2011-05-26

Applicant: Tao Luo ,  Ke Liu ,  Kapil Bhattad ,  Taesang Yoo ,  Xiaoxia Zhang

Inventor： Tao Luo ,  Ke Liu ,  Kapil Bhattad ,  Taesang Yoo ,  Xiaoxia Zhang

IPC: H04W4/00

CPC classification number: H04J11/0056 ,  H04B1/7107

Abstract: A method of wireless communication includes generating a list of cells for physical broadcast channel (PBCH) decoding. The method also includes allocating memory for decoding and cancelling a subset of cells from the generated cell list. The method further includes storing information related to subsets of cells from the generated list in the allocated memory during different time periods. The allocated memory is sufficient for attempting, at each time period, decoding of each subset of cells and cancelling of decoded cells in each subset. The method further includes cycling through the generated cell list by processing each subset of the cell list during the different time periods.

Abstract translation: 一种无线通信方法包括：生成用于物理广播信道（PBCH）解码的小区列表。 该方法还包括分配用于从所生成的小区列表中解码和消除小区子集的存储器。 该方法还包括在不同时间段期间将与生成的列表中的小区子集有关的信息存储在所分配的存储器中。 分配的存储器足以在每个时间段尝试对每个子集的每个子集进行解码并且消除每个子集中的解码单元。 该方法还包括通过在不同时间段内处理单元列表的每个子集来循环通过所生成的单元列表。

公开(公告)号：US20110274097A1

公开(公告)日：2011-11-10

申请号：US13101877

申请日：2011-05-05

Applicant: Xiaoxia Zhang ,  Ke Liu ,  Kapil Bhattad ,  Taesang Yoo ,  Tao Luo

Inventor： Xiaoxia Zhang ,  Ke Liu ,  Kapil Bhattad ,  Taesang Yoo ,  Tao Luo

IPC: H04W4/00

CPC classification number: H04W24/02 ,  H04W16/14 ,  H04W48/08

Abstract: Physical-Layer Cell Identifier (PCID) collisions may occur in a wireless network when two neighboring evolved Node Bs (eNBs) having different Global Cell Identifiers (GCID) select identical PCIDs. Evolved Node Bs may uniquely identify themselves by transmitting on a broadcast channel, such as a Physical Broadcast Channel (PBCH), a pattern of bits corresponding to the eNB's GCID. Individual User Equipments (UEs) may recognize the PCID collision by decoding the PBCH payload to identify different GCID-modulated payloads from two eNBs involved in the PCID collision. Alternatively, UEs may detect PCID collisions in the wireless network by monitoring Primary Synchronization Signals (PSS) and Secondary Synchronization Signals (SSS) on the PBCH for identical signals separated by a relatively large time offset. After detecting a PCID collision, the UEs may attempt by best effort to report the PCID collision, may report to a fallback eNB, or the UEs may use special resources on an uplink channel.

Abstract translation: 当具有不同的全局小区标识符（GCID）的两个相邻演进节点B（eNB）选择相同的PCID时，物理层小区标识符（PCID）冲突可能发生在无线网络中。 演进节点B可以通过在诸如物理广播信道（PBCH）的广播信道上发送与eNB的GCID相对应的比特模式来唯一地标识自身。 个体用户设备（UE）可以通过解码PBCH净荷来识别PCID冲突，从而识别来自涉及PCID冲突的两个eNB的不同GCID调制的有效载荷。 或者，UE可以通过监视PBCH上的主同步信号（PSS）和次同步信号（SSS）来检测无线网络中的PCID冲突，以相对较大的时间偏移分开的相同信号。 在检测到PCID冲突之后，UE可以尽最大努力报告PCID冲突，可以向后退eNB报告，或者UE可以在上行链路信道上使用特殊资源。

公开(公告)号：US20110205954A1

公开(公告)日：2011-08-25

申请号：US12848969

申请日：2010-08-02

Applicant: Alexei Yurievitch Gorokhov ,  Juan Montojo ,  Amir Farajidana ,  Kapil Bhattad ,  Brian Clarke Banister

Inventor： Alexei Yurievitch Gorokhov ,  Juan Montojo ,  Amir Farajidana ,  Kapil Bhattad ,  Brian Clarke Banister

IPC: H04W72/04 ,  H04B7/14

CPC classification number: H04L5/0051 ,  H04L5/0007 ,  H04L5/0058

Abstract: Systems and methodologies are described that facilitate sending and/or receiving user equipment specific reference signals (UE-RSs) in a wireless communication environment. A UE-RS pattern can be selected, yielded, etc. based upon a number of symbols from a subframe utilized for downlink transmission. At least one time domain component of the UE-RS pattern can vary based upon the number of symbols from the subframe utilized for the downlink transmission. For instance, the at least one time domain component can be punctured, time-shifted, and so forth. Further, UE-RSs can be mapped to resource elements of the subframe as a function of the UE-RS pattern. Moreover, a UE can utilize the UE-RS pattern to detect UE-RSs on the resource elements of the subframe. Further, the UE can estimate a channel based upon the UE-RSs.

Abstract translation: 描述了有助于在无线通信环境中发送和/或接收用户设备特定参考信号（UE-RS）的系统和方法。 可以基于用于下行链路传输的子帧的多个符号来选择，产生UE-RS模式。 UE-RS模式的至少一个时域分量可以基于用于下行链路传输的子帧的符号数量而变化。 例如，至少一个时域分量可以被打孔，时移等等。 此外，UE-RS可以被映射到作为UE-RS模式的函数的子帧的资源元素。 此外，UE可以利用UE-RS模式来检测子帧的资源元素上的UE-RS。 此外，UE可以基于UE-RS估计信道。

公开(公告)号：US20100246527A1

公开(公告)日：2010-09-30

申请号：US12750556

申请日：2010-03-30

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

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

IPC: H04W72/04

CPC classification number: H04L5/005 ,  H04L5/0014 ,  H04L5/0051 ,  H04L25/0226

Abstract: Apparatus and methods for generation and use of reference signals in a wireless communications system are described. A group-specific reference signal pattern may be generated for provision to a group of UEs or terminals in communication with an eNodeB or base station. The reference signal may be generated based on system parameters. Reference signals may be generated to span multiple contiguous physical resource blocks.

Abstract translation: 描述了在无线通信系统中用于生成和使用参考信号的装置和方法。 可以生成组特定参考信号模式，以提供到与eNodeB或基站通信的一组UE或终端。 可以基于系统参数生成参考信号。 可以生成参考信号以跨越多个连续的物理资源块。

公开(公告)号：US20100080166A1

公开(公告)日：2010-04-01

申请号：US12568255

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: H04B7/14 ,  H04W72/04

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 base station may transmit data to a relay station in a portion of a subframe instead of the entire subframe. The relay station may transmit control information during part of the subframe. The base station may transmit data to the relay station during the remaining part of the subframe. In another aspect, a target termination for a packet may be selected based on data and/or ACK transmission opportunities available for the packet. One or more transmissions of the packet may be sent with HARQ, and ACK information may be sent for the packet. The packet may be transmitted such that it can be terminated prior to the first subframe (i) not available for sending the packet or (ii) available for sending ACK information.

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，基站可以在子帧的一部分而不是整个子帧中向中继站发送数据。 中继站可以在子帧的一部分期间发送控制信息。 基站可以在子帧的剩余部分期间向中继站发送数据。 在另一方面，可以基于可用于分组的数据和/或ACK传输机会来选择分组的目标终止。 可以用HARQ发送分组的一个或多个传输，并且可以为分组发送ACK信息。 可以发送分组，使得其可以在第一子帧（i）不可用于发送分组之前终止，或者（ii）可用于发送ACK信息。

公开(公告)号：US20100080139A1

公开(公告)日：2010-04-01

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: H04L12/26 ,  H04B7/14

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：US20090285139A1

公开(公告)日：2009-11-19

申请号：US12233970

申请日：2008-09-19

Applicant: Kapil Bhattad ,  Ravi Palanki

Inventor： Kapil Bhattad ,  Ravi Palanki

IPC: H04B7/00 ,  H04Q7/00

CPC classification number: H04L5/0044 ,  H04L5/0007 ,  H04L5/0053 ,  H04L5/0066 ,  H04L5/0091 ,  H04W28/18 ,  Y02D70/00 ,  Y02D70/1222 ,  Y02D70/1242 ,  Y02D70/1262 ,  Y02D70/142 ,  Y02D70/146

Abstract: To assist in minimizing interference, a bandwidth range can have guards on either side to reduce leakage into neighboring bandwidth ranges. However, in relatively low power situations the risk of leakage is reduced. Therefore, the guard bandwidths can be used to open new channels upon which information can be transmitted. Thus, there can be a larger amount of bandwidth used while still retaining protective aspects, such as low interference to neighboring bands. Using the guard bandwidth to transmit new channels facilitates backward compatibility since legacy devices do not commonly monitor the guard bandwidth. These techniques can also be used at high power base stations by advertising a larger guard than necessary to legacy devices and using the additionally created guard bandwidth to transmit new channels.

Abstract translation: 为了帮助最小化干扰，带宽范围可以防止任何一方将泄漏减少到相邻的带宽范围。 然而，在相对低功率的情况下，泄漏的风险降低。 因此，保护​​带宽可以用于打开可以传输信息的新信道。 因此，可以存在更大量的带宽，同时仍然保留保护方面，例如对相邻频带的低干扰。 使用保护带宽传输新信道有助于向后兼容，因为传统设备通常不会监视保护带宽。 这些技术也可以在高功率基站上使用，比传统设备所需的更大的卫星，并使用附加创建的保护带宽来传输新的信道。

公开(公告)号：US09887754B2

公开(公告)日：2018-02-06

申请号：US13100069

申请日：2011-05-03

Applicant: Kapil Bhattad ,  Peter Gaal

Inventor： Kapil Bhattad ,  Peter Gaal

IPC: H04B7/06 ,  H04B7/04 ,  H04L25/03 ,  H04L5/00 ,  H04L25/02 ,  H04W52/42

CPC classification number: H04B7/0617 ,  H04B7/0421 ,  H04B7/0632 ,  H04B7/0639 ,  H04B7/0669 ,  H04B7/0684 ,  H04L5/0026 ,  H04L5/0048 ,  H04L5/0057 ,  H04L25/0204 ,  H04L25/0226 ,  H04L25/03343 ,  H04L25/03866 ,  H04L2025/03414 ,  H04L2025/03426 ,  H04L2025/03802 ,  H04W52/42

Abstract: A method, an apparatus, and a computer program product for wireless communication are provided in which a first pre-coding matrix for use on a portion of a set of resource blocks (RBs) is determined. At least one beamforming vector of the set of beamforming vectors is modified by applying a phase rotation to generate a modified pre-coding matrix. The modified pre-coding matrix is applied to one or more demodulation reference signals and data associated with the portion of the set of RBs for transmission using at least one antenna.