公开(公告)号：US08064424B2

公开(公告)日：2011-11-22

申请号：US11213463

申请日：2005-08-26

申请人： Sharad Deepak Sambhwani ,  Dhananjay Ashok Gore ,  Avneesh Agrawal ,  Arak Sutivong ,  Alexei Gorokhov

发明人： Sharad Deepak Sambhwani ,  Dhananjay Ashok Gore ,  Avneesh Agrawal ,  Arak Sutivong ,  Alexei Gorokhov

IPC分类号： H04B7/216

CPC分类号： H04J13/0048 ,  H04J13/18

摘要： Systems and methodologies are described that facilitate increasing system capacity in a code-limited WCDMA (e.g., TDD, FDD, . . . ) wireless communication environment. According to one aspect, a larger code space can be defined by introducing multiple code clusters within a sector, wherein each cluster has a unique scrambling code. Codes within a cluster can have orthogonal Walsh sequences that can be assigned to user devices to facilitate communicating over a wireless network and can overlap with codes in another cluster. The unique scrambling code assigned to each cluster can ensure that duplicate Walsh sequences in another cluster in the same sector appear as a pseudo-noise codes.

摘要翻译： 描述了在有限的WCDMA（例如，TDD，FDD，...）无线通信环境中增加系统容量的系统和方法。 根据一个方面，可以通过在扇区内引入多个码集来定义更大的码空间，其中每个群集具有唯一的扰码。 群集内的代码可以具有可被分配给用户设备的正交沃尔什序列，以便于通过无线网络进行通信并且可以与另一个群集中的代码重叠。 分配给每个簇的唯一扰码可以确保同一扇区中另一个簇中的重复沃尔什序列显示为伪噪声码。

公开(公告)号：US08045512B2

公开(公告)日：2011-10-25

申请号：US11261805

申请日：2005-10-27

申请人： Aamod Khandekar ,  Alexei Gorokhov ,  Avneesh Agrawal ,  Rajiv Vijayan ,  Edward Harrison Teague ,  Fatih Ulupinar

发明人： Aamod Khandekar ,  Alexei Gorokhov ,  Avneesh Agrawal ,  Rajiv Vijayan ,  Edward Harrison Teague ,  Fatih Ulupinar

IPC分类号： H04Q7/00

CPC分类号： H04L5/023 ,  H04L27/2602 ,  H04W48/12

摘要： To support mobile stations that are not capable of demodulating the entire bandwidth or that can be made to demodulate less than the entire bandwidth, a system, apparatus and method are provided to schedule users on less than all of the bandwidth. Further, certain users can be scheduled on more of the bandwidth than others.

摘要翻译： 为了支持不能解调整个带宽或者可以使其解调的小于整个带宽的移动站，提供了一种系统，装置和方法，以在小于全部带宽上调度用户。 此外，某些用户可以比其他用户更多地调度带宽。

公开(公告)号：US20100215030A1

公开(公告)日：2010-08-26

申请号：US12775097

申请日：2010-05-06

申请人： Avneesh Agrawal ,  Rajat Prakash

发明人： Avneesh Agrawal ,  Rajat Prakash

IPC分类号： H04W68/00

CPC分类号： H04W68/00

摘要： A quick paging channel in a random access wireless communication system includes at least one bit in a quick paging frame identifying the presence of a paging message for an access terminal or group of access terminals. The quick paging bits identifying the presence of a paging message for a first access terminal is encoded with one or more quick paging bits corresponding to one or more additional access terminals to produce one or more forward error correction bits. The jointly encoded quick paging bits are broadcast to the access terminals by time division multiplexing the quick paging frame with additional frames of information.

摘要翻译： 随机接入无线通信系统中的快速寻呼信道包括快速寻呼帧中的至少一个比特，标识接入终端或一组接入终端的寻呼消息的存在。 标识用于第一接入终端的寻呼消息的快速寻呼比特用一个或多个对应于一个或多个附加接入终端的快速寻呼位进行编码，以产生一个或多个前向纠错比特。 共同编码的快速寻呼比特通过用快速寻呼帧与附加信息帧进行时分复用来广播到接入终端。

公开(公告)号：US20100172311A1

公开(公告)日：2010-07-08

申请号：US12651838

申请日：2010-01-04

申请人： Avneesh Agrawal ,  Ashwin Sampath ,  Ravi Palanki ,  Naga Bhushan ,  Raja Sekhar Bachu ,  Aamod D. Khandekar

发明人： Avneesh Agrawal ,  Ashwin Sampath ,  Ravi Palanki ,  Naga Bhushan ,  Raja Sekhar Bachu ,  Aamod D. Khandekar

IPC分类号： H04W72/04 ,  H04L27/28

CPC分类号： H04L5/005 ,  H04L1/1893 ,  H04L5/0048 ,  H04L5/0082 ,  H04W72/005 ,  H04W72/1247

摘要： Systems and methodologies are described that facilitate providing high reuse for transmitting reference signals, such as positioning reference signals (PRS) and cell-specific reference signals (CRS), to improve hearability thereof for applications such as trilateration and/or the like. In particular, PRSs can be transmitted in designated or selected positioning subframes. Resource elements within the positioning subframe can be selected for transmitting the PRSs and can avoid conflict with designated control regions, resource elements used for transmitting cell-specific reference signals, and/or the like. Resource elements for transmitting PRSs can be selected according to a planned or pseudo-random reuse scheme. In addition, a transmit diversity scheme can be applied to the PRSs to minimize impact of introducing the PRSs to legacy devices. Moreover, portions of a subframe not designated for PRS transmission can be utilized for user plane data transmission.

摘要翻译： 描述了有助于提供用于传输参考信号（诸如定位参考信号（PRS）和小区特定参考信号（CRS））的高重用性的系统和方法，以改善诸如三边测量等应用的可听性。 特别地，PRS可以在指定或选定的定位子帧中传输。 可以选择定位子帧内的资源元素用于发送PRS，并且可以避免与指定的控制区域的冲突，用于发送小区特定参考信号的资源元素等。 用于传输PRS的资源元素可以根据计划或伪随机重用方案来选择。 此外，发射分集方案可以应用于PRS，以最小化将PRS引入传统设备的影响。 此外，未指定用于PRS传输的子帧的部分可以用于用户平面数据传输。

公开(公告)号：US20100159940A1

公开(公告)日：2010-06-24

申请号：US12719794

申请日：2010-03-08

申请人： Alexei Gorokhov ,  Avneesh Agrawal

发明人： Alexei Gorokhov ,  Avneesh Agrawal

IPC分类号： H04W72/04

CPC分类号： H04L5/0046 ,  H04L5/0007 ,  H04L5/0037 ,  H04L5/0042 ,  H04L5/06

摘要： The disclosed embodiments provide for methods and systems for flexibly allocating a shared frequency spectrum to a plurality of users, the spectrum may have a first number of segments, each segment having a second number of clusters associated with a certain sector/cell. In one aspect, a method for flexibly allocating a shared frequency spectrum to a plurality of users comprises the acts of fixedly assigning a first group of clusters to a first group of users, such that the first group of users stay fixed to the assigned clusters, and assigning a second group of clusters to a second group of users, such that the second group of users hop within the assigned clusters.

摘要翻译： 所公开的实施例提供了用于向多个用户灵活地分配共享频谱的方法和系统，频谱可以具有第一数量的段，每个段具有与特定扇区/小区相关联的第二数量的簇。 一方面，一种用于向多个用户灵活地分配共享频谱的方法包括将第一组群固定地分配给第一组用户的动作，使得第一组用户保持固定到所分配的群， 以及将第二组群集分配给第二组用户，使得所述第二组用户在所分配的群集内跳转。

公开(公告)号：US20100110966A1

公开(公告)日：2010-05-06

申请号：US12262573

申请日：2008-10-31

申请人： Ravi Palanki ,  Avneesh Agrawal

发明人： Ravi Palanki ,  Avneesh Agrawal

IPC分类号： H04B7/14

CPC分类号： H04L1/1812 ,  H04L1/08 ,  H04L2001/0097

摘要： Techniques for relaying a broadcast transmission in a wireless network are described. In one design, a relay may receive at least one transmission of a packet from a transmitter (e.g., a broadcast station) and may process the at least one transmission to decode the packet. The relay may generate at least one remaining transmission of the packet after correctly decoding the packet. The transmitter may broadcast multiple transmissions of the packet to receivers. The at least one transmission may be at least one of the multiple transmissions, and the at least one remaining transmission may be remaining ones of the multiple transmissions. The relay may send the at least one remaining transmission of the packet at the same time and on the same resources used by the transmitter. The multiple transmissions may be HARQ transmissions containing different redundancy information for the packet.

摘要翻译： 描述了用于中继无线网络中的广播传输的技术。 在一种设计中，中继器可以从发射机（例如，广播站）接收分组的至少一个传输，并且可以处理该至少一个传输来解码分组。 在正确解码分组之后，中继可以产生分组的至少一个剩余传输。 发射机可以将广播分组的多个传输广播到接收机。 所述至少一个传输可以是多个传输中的至少一个，并且所述至少一个剩余传输可以是多个传输中的剩余传输。 中继器可以在发送器使用的相同资源的同一时间发送分组的至少一个剩余传输。 多个传输可以是包含用于分组的不同冗余信息的HARQ传输。

公开(公告)号：US20100067474A1

公开(公告)日：2010-03-18

申请号：US12622202

申请日：2009-11-19

申请人： Rajiv Vijayan ,  Avneesh Agrawal ,  Sanjay Jha

发明人： Rajiv Vijayan ,  Avneesh Agrawal ,  Sanjay Jha

IPC分类号： H04W72/04

CPC分类号： H04W72/0453 ,  H04L5/0007 ,  H04L5/0037 ,  H04L5/0066 ,  H04L27/2614 ,  H04W52/343 ,  H04W52/367

摘要： Techniques for managing peak-to-average power ratio (PAPR) for multi-carrier modulation in wireless communication systems. Different terminals in a multiple-access system may have different required transmit powers. The number of carriers to allocate to each terminal is made dependent on its required transmit power. Terminals with higher required transmit powers may be allocated fewer carriers (associated with smaller PAPR) to allow the power amplifier to operate at higher power levels. Terminals with lower required transmit powers may be allocated more carriers (associated with higher PAPR) since the power amplifier is operated at lower power levels. The specific carriers to assign to the terminals may also be determined by their transmit power levels to reduce out-of-band emissions. Terminals with higher required transmit powers may be assigned with carriers near the middle of the operating band, and terminals with lower required transmit powers may be assigned with carriers near the band edges.

摘要翻译： 用于管理无线通信系统中多载波调制的峰均功率比（PAPR）的技术。 多址系统中的不同终端可能具有不同的所需传输功率。 分配给每个终端的载波数量取决于其所需的发射功率。 具有更高所需发射功率的终端可以被分配较少的载波（与较小的PAPR相关联），以允许功率放大器在较高的功率电平下工作。 由于功率放大器在较低的功率电平下工作，所以具有较低所需发射功率的终端可以分配更多的载波（与更高的PAPR相关联）。 分配给终端的特定载波也可以由其发射功率电平来确定，以减少带外发射。 具有更高要求的发射功率的终端可以被分配到靠近工作频带中间的载波，并且具有较低所需发射功率的终端可以被分配给带边缘附近的载波。

公开(公告)号：US07675886B2

公开(公告)日：2010-03-09

申请号：US10919698

申请日：2004-08-16

申请人： Avneesh Agrawal ,  Rajiv Vijayan ,  Tamer Kadous

发明人： Avneesh Agrawal ,  Rajiv Vijayan ,  Tamer Kadous

IPC分类号： H04B7/00

CPC分类号： H04L1/0618 ,  H04B7/0417 ,  H04B7/0443 ,  H04B7/0465 ,  H04B7/0615 ,  H04B7/0891 ,  H04W52/34 ,  H04W52/42

摘要： A rate adaptive transmission scheme for MIMO systems, which can transmit a variable number of data symbol streams, provide transmit diversity for each data symbol stream, and fully utilize the total transmit power of the system and the full power of each antenna. In one method, at least one data symbol stream is received for transmission from a plurality of antennas. Each data symbol stream is scaled with a respective weight corresponding to the amount of transmit power allocated to that stream. The scaled data symbol stream(s) are multiplied with a transmit basis matrix to provide a plurality of transmit symbol streams for the plurality of antennas. The transmit basis matrix (e.g., a Walsh-Hadamard matrix or a DFT matrix) is defined such that each data symbol stream is transmitted from all antennas and each transmit symbol stream is transmitted at (or near) the full power for the associated antenna.

摘要翻译： 可以传输可变数量的数据符号流的MIMO系统的速率自适应传输方案为每个数据符号流提供发射分集，并且充分利用系统的总发射功率和每个天线的全功率。 在一种方法中，接收至少一个数据符号流用于从多个天线发射。 每个数据符号流用对应于分配给该流的发射功率的量的相应权重进行缩放。 缩放的数据符号流与发射基矩阵相乘以为多个天线提供多个发射符号流。 定义发射基矩阵（例如，沃尔什 - 哈达玛矩阵或DFT矩阵），使得每个数据符号流从所有天线发送，并且每个发射符号流以相关天线的（或接近）全功率发射。

公开(公告)号：US20090323577A1

公开(公告)日：2009-12-31

申请号：US12490078

申请日：2009-06-23

申请人： Avneesh Agrawal ,  Alexei Y. Gorokhov ,  Mehmet I. Gurelli ,  Naga Bhushan ,  Parag A. Agashe

发明人： Avneesh Agrawal ,  Alexei Y. Gorokhov ,  Mehmet I. Gurelli ,  Naga Bhushan ,  Parag A. Agashe

IPC分类号： H04H20/71 ,  H04L1/18

CPC分类号： H04L1/1692 ,  H04L1/0026 ,  H04L1/1671 ,  H04L1/1861 ,  H04L1/1887 ,  H04L2001/0093

摘要： Techniques for supporting broadcast/multiple transmission to multiple terminals with feedback and rate adaptation are described. In an aspect, a combination of HARQ and at least one shared feedback channel may be used to support broadcast/multicast transmission. In one design, a base station may send at least one transmission of a packet to multiple terminals, one transmission at a time. The base station may receive feedback information (e.g., NAK) for the packet from the terminals on the shared feedback channel(s). The base station may determine whether to terminate the packet early and/or may select at least one transmission parameter for another packet based on the feedback information for the packet. In another aspect, a transport format for a broadcast/multicast transmission may be selected based on CQI information from terminals receiving the transmission. The terminals may send CQI information at a slow rate and/or only certain terminals may send CQI information.

摘要翻译： 描述了用于支持具有反馈和速率适配的多个终端的广播/多传输的技术。 在一方面，可以使用HARQ和至少一个共享反馈信道的组合来支持广播/多播传输。 在一种设计中，基站可以向多个终端发送分组的至少一个传输，一次发送一个。 基站可以从共享反馈信道上的终端接收针对分组的反馈信息（例如，NAK）。 基站可以基于分组的反馈信息来确定是否提前终止分组和/或可以针对另一分组选择至少一个传输参数。 在另一方面，可以基于接收到传输的终端的CQI信息来选择用于广播/多播传输的传输格式。 终端可以以慢速率发送CQI信息和/或仅某些终端可以发送CQI信息。

公开(公告)号：US20090286563A1

公开(公告)日：2009-11-19

申请号：US12463885

申请日：2009-05-11

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

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

IPC分类号： H04B15/00 ,  H04B7/00

CPC分类号： H04W48/20

摘要： Techniques for using virtual noise figure for various functions in a wireless communication network are described. A virtual noise figure is an indication of a virtual noise level at a receiver, which may be higher than an actual noise level at the receiver. In an aspect, virtual noise figure may be used for serving base station selection. A terminal may receive information indicative of a virtual noise figure for each of at least one base station. The terminal may select a serving base station based on the virtual noise figure for each base station. The terminal may send data to the serving base station at a rate selected based on an actual noise figure for the serving base station. In other aspects, virtual noise figure may be used for interference management and/or power control.

摘要翻译： 描述了在无线通信网络中用于各种功能的虚拟噪声系数的技术。 虚拟噪声系数是接收机处的虚拟噪声电平的指示，其可能高于接收机处的实际噪声电平。 在一方面，虚拟噪声系数可用于服务基站选择。 终端可以接收指示至少一个基站中的每一个的虚拟噪声系数的信息。 终端可以基于每个基站的虚拟噪声系数来选择服务基站。 终端可以以服务基站的实际噪声系数选择的速率向服务基站发送数据。 在其他方面，虚拟噪声系数可用于干扰管理和/或功率控制。