公开(公告)号：US08514829B2

公开(公告)日：2013-08-20

申请号：US12238832

申请日：2008-09-26

申请人： Jing Sun ,  Aamod Khandekar ,  Ravi Palanki

发明人： Jing Sun ,  Aamod Khandekar ,  Ravi Palanki

IPC分类号： H04J1/00 ,  H04L5/00

CPC分类号： H04L5/0007 ,  H04L5/0044 ,  H04W72/00

摘要： The method and apparatus as described are directed toward techniques and mechanisms to improve efficient wireless network implementation, including obtaining one specification including a center frequency definition, determining, based on the specification, a center frequency of at least one carrier used to operate on the wireless communication system, determining an amount of dithering to add to the center frequency, and setting the center frequency to be multiples of sub-carrier spacing by adding the dithering.

摘要翻译： 所描述的方法和装置涉及改进有效的无线网络实现的技术和机制，包括获得包括中心频率定义的一个规范，基于规范确定用于在无线网络上操作的至少一个载波的中心频率 通信系统，确定要添加到中心频率的抖动量，以及通过添加抖动将中心频率设置为副载波间隔的倍数。

公开(公告)号：US20090093216A1

公开(公告)日：2009-04-09

申请号：US12238832

申请日：2008-09-26

申请人： Jing Sun ,  Aamod Khandekar ,  Ravi Palanki

发明人： Jing Sun ,  Aamod Khandekar ,  Ravi Palanki

IPC分类号： H04B17/00

CPC分类号： H04L5/0007 ,  H04L5/0044 ,  H04W72/00

摘要： The method and apparatus as described are directed toward techniques and mechanisms to improve efficient wireless network implementation, including obtaining one specification including a center frequency definition, determining, based on the specification, a center frequency of at least one carrier used to operate on the wireless communication system, determining an amount of dithering to add to the center frequency, and setting the center frequency to be multiples of sub-carrier spacing by adding the dithering.

摘要翻译： 所描述的方法和装置涉及改进有效的无线网络实现的技术和机制，包括获得包括中心频率定义的一个规范，基于规范确定用于在无线网络上操作的至少一个载波的中心频率 通信系统，确定要添加到中心频率的抖动量，以及通过添加抖动将中心频率设置为副载波间隔的倍数。

公开(公告)号：US09419676B2

公开(公告)日：2016-08-16

申请号：US13366727

申请日：2012-02-06

申请人： Ravi Palanki ,  Aamod Khandekar

发明人： Ravi Palanki ,  Aamod Khandekar

IPC分类号： H04B1/69 ,  H04L27/26 ,  H04L5/00 ,  H04L25/02 ,  H04L25/03

CPC分类号： H04B1/69 ,  H04L5/0007 ,  H04L5/0048 ,  H04L25/0212 ,  H04L25/022 ,  H04L25/023 ,  H04L25/025 ,  H04L27/2613 ,  H04L2025/03624

摘要： A receiver for receiving a pilot generated based on a polyphase sequence having a constant time-domain envelope and a flat frequency spectrum is disclosed. In one design, the receiver includes at least one demodulator and at least one processor. The demodulator(s) receive at least one single-carrier frequency division multiple access (SC-FDMA) symbol transmitted via a communication channel and including pilot symbols generated based on a polyphase sequence. The demodulator(s) remove a cyclic prefix in each SC-FDMA symbol and demodulate the at least one SC-FDMA symbol to obtain received pilot symbols. The processor(s) derive a channel estimate for the communication channel based on the received pilot symbols.

摘要翻译： 公开了一种用于接收基于具有恒定时域包络和平坦频谱的多相序列产生的导频的接收机。 在一种设计中，接收机包括至少一个解调器和至少一个处理器。 解调器接收经由通信信道发送并包括基于多相序列生成的导频符号的至少一个单载波频分多址（SC-FDMA）符号。 解调器在每个SC-FDMA符号中去除循环前缀，并解调至少一个SC-FDMA符号以获得接收到的导频符号。 处理器基于接收到的导频符号导出通信信道的信道估计。

公开(公告)号：US20160149659A1

公开(公告)日：2016-05-26

申请号：US15011088

申请日：2016-01-29

申请人： Ravi Palanki ,  Aamod Khandekar ,  Naga Bhushan

发明人： Ravi Palanki ,  Aamod Khandekar ,  Naga Bhushan

IPC分类号： H04J11/00 ,  H04W72/08 ,  H04L5/00

CPC分类号： H04J11/005 ,  H04B1/7107 ,  H04B2201/70702 ,  H04J11/004 ,  H04J11/0069 ,  H04L5/0048 ,  H04L5/0053 ,  H04W24/00 ,  H04W48/08 ,  H04W72/082

摘要： Techniques for transmitting and detecting for overhead channels and signals in a wireless network are described. In an aspect, a base station may blank (i.e., not transmit) at least one overhead transmission on certain resources in order to detect for the at least one overhead transmission of another base station. In one design, the base station may (i) send the overhead transmission(s) on a first subset of designated resources and (ii) blank the overhead transmission(s) on a second subset of the designated resources. The designated resources may be resources on which the overhead transmission(s) are sent by macro base stations. The base station may detect for the overhead transmission(s) from at least one other base station on the second subset of the designated resources. In another aspect, the base station may transmit the overhead transmission(s) on additional resources different from the designated resources.

公开(公告)号：US09326253B2

公开(公告)日：2016-04-26

申请号：US12163835

申请日：2008-06-27

申请人： Naga Bhushan ,  Aamod Khandekar ,  Ravi Palanki

发明人： Naga Bhushan ,  Aamod Khandekar ,  Ravi Palanki

IPC分类号： H04W52/00 ,  H04W52/24 ,  H04W52/32 ,  H04W52/44 ,  H04W52/38

CPC分类号： H04W52/243 ,  H04W52/325 ,  H04W52/38 ,  H04W52/44

摘要： Systems and methodologies are described that facilitate blanking on portions of bandwidth utilized by communicating devices that are dominantly interfered by a disparate device in wireless communications networks. The portions of bandwidth can relate to critical data, such as control data, and one or more of the communicating devices can request that the dominantly interfering device blank on one or more of the portions. The communicating devices can subsequently transmit data over the blanked portions free of the dominant interference. Additionally, the dominantly interfering device can request reciprocal blanking from the one or more communicating devices.

摘要翻译： 描述了系统和方法，其有助于消除由无线通信网络中的不同设备主要干扰的通信设备所使用的带宽部分的消隐。 带宽的部分可以与诸如控制数据的关键数据相关联，并且一个或多个通信设备可以请求在一个或多个部分上的主要干扰设备空白。 通信设备可以随后在没有主导干扰的消隐部分上发送数据。 此外，主要干扰装置可以从一个或多个通信装置请求相互消隐。

公开(公告)号：US08730877B2

公开(公告)日：2014-05-20

申请号：US11242115

申请日：2005-09-30

申请人： Ravi Palanki ,  Aamod Khandekar ,  Arak Sutivong

发明人： Ravi Palanki ,  Aamod Khandekar ,  Arak Sutivong

IPC分类号： H04W4/00

CPC分类号： H04B7/04 ,  H04L1/1819 ,  H04L5/0023 ,  H04L5/0048 ,  H04L25/0206 ,  H04L25/022 ,  H04L25/0226 ,  H04L25/0228 ,  H04L25/0256

摘要： In a single-carrier frequency division multiple access (SC-FDMA) system that utilizes interleaved FDMA (IFDMA) or localized FDMA, multiple transmitters may transmit their pilots using time division multiplexing (TDM), code division multiplexing (CDM), interleaved frequency division multiplexing (IFDM), or localized frequency division multiplexing (LFDM). The pilots from these transmitters are then orthogonal to one another. A receiver performs the complementary demultiplexing for the pilots sent by the transmitters. The receiver may derive a channel estimate for each transmitter using an MMSE technique or a least-squares technique. The receiver may receive overlapping data transmissions sent on the same time-frequency block by the multiple transmitters and may perform receiver spatial processing with spatial filter matrices to separate these data transmissions. The receiver may derive the spatial filter matrices based on the channel estimates for the transmitters and using zero-forcing, MMSE, or maximal ratio combining technique.

摘要翻译： 在采用交织FDMA（IFDMA）或集中式FDMA的单载波频分多址（SC-FDMA）系统中，多个发射机可以使用时分多路复用（TDM），码分多路复用（CDM），交错分频 复用（IFDM）或局部频分复用（LFDM）。 来自这些发射机的飞行员然后彼此正交。 接收机对由发射机发送的导频进行互补解复用。 接收机可以使用MMSE技术或最小二乘法来为每个发射机导出信道估计。 接收机可以接收由多个发射机在相同时间频率块上发送的重叠数据传输，并且可以利用空间滤波器矩阵来执行接收机空间处理以分离这些数据传输。 接收机可以基于发射机的信道估计和使用零强制，MMSE或最大比组合技术导出空间滤波器矩阵。

公开(公告)号：US08681749B2

公开(公告)日：2014-03-25

申请号：US11968642

申请日：2008-01-02

申请人： Aamod Khandekar ,  Alexei Gorokhov ,  Naga Bhushan ,  Sandip Sarkar ,  Ravi Palanki

发明人： Aamod Khandekar ,  Alexei Gorokhov ,  Naga Bhushan ,  Sandip Sarkar ,  Ravi Palanki

IPC分类号： H04B7/216 ,  H04W72/04 ,  H04B1/713 ,  H04W72/08 ,  H04L5/00 ,  H04B7/26

CPC分类号： H04W72/04 ,  H04B1/713 ,  H04B7/2621 ,  H04L1/1692 ,  H04L5/0053 ,  H04W52/146 ,  H04W52/16 ,  H04W52/243 ,  H04W52/247 ,  H04W52/362 ,  H04W52/60 ,  H04W72/08

摘要： Techniques for sending control information in a wireless communication system are described. A control segment may include L≧1 tiles, and each tile may include a number of transmission units. A number of control resources may be defined and mapped to the transmission units for the control segment. For symmetric mapping, multiple sets of S≧1 control resources may be formed, and each batch of L consecutive sets of S control resources may be mapped to S transmission units at the same location in the L tiles. For localized mapping, S>1, and each set of S control resources may be mapped to a cluster of S adjacent transmission units in one tile. For distributed mapping, S=1, and each control resource may be mapped to one transmission unit in one tile. For diversity, each control resource may be mapped to multiple (e.g., three) transmission units in at least one tile.

摘要翻译： 描述用于在无线通信系统中发送控制信息的技术。 控制段可以包括L≥1瓦片，并且每个瓦片可以包括多个传输单元。 可以将多个控制资源定义并映射到控制段的传输单元。 对于对称映射，可以形成多组S≥1个控制资源，并且每L批连续的S个控制资源组可以被映射到L个瓦片中相同位置处的S个传输单元。 对于局部映射，S> 1，并且每组S个控制资源可以被映射到一个瓦片中的S个相邻传输单元的簇。 对于分布式映射，S = 1，并且每个控制资源可以映射到一个瓦片中的一个传输单元。 对于分集，每个控制资源可以映射到至少一个瓦片中的多个（例如，三个）传输单元。

公开(公告)号：US08457260B2

公开(公告)日：2013-06-04

申请号：US11944866

申请日：2007-11-26

申请人： Aamod Khandekar ,  Alexei Gorokhov ,  Naga Bhushan ,  Ravi Palanki

发明人： Aamod Khandekar ,  Alexei Gorokhov ,  Naga Bhushan ,  Ravi Palanki

IPC分类号： H04L27/08

CPC分类号： H04L27/3809 ,  H04L27/2647 ,  H04W52/52 ,  H04W68/02

摘要： Techniques for supporting efficient operation by terminals in a wireless communication system are described. A base station transmits a preamble periodically in each superframe. The preamble includes at least one first OFDM symbol for control information followed by at least one second OFDM symbol for paging information. A terminal receives the first and second OFDM symbols and determines a receiver gain based on the received power of the first OFDM symbol(s), e.g., with an AGC loop having a shorter time constant than the duration of the first OFDM symbol(s). The terminal processes the second OFDM symbol(s) based on the receiver gain to obtain the paging information. The terminal may operate in an idle state, determine superframes assigned to the terminal, sleep between the assigned superframes, and process the first and second OFDM symbols in each assigned superframe to obtain the paging information.

摘要翻译： 描述了用于支持无线通信系统中的终端的有效操作的技术。 基站在每个超帧中周期性地发送前导码。 前导码包括用于控制信息的至少一个第一OFDM符号，随后是用于寻呼信息的至少一个第二OFDM符号。 终端接收第一和第二OFDM符号，并且基于第一OFDM符号的接收功率确定接收机增益，例如，具有比第一OFDM符号的持续时间更短的时间常数的AGC环路， 。 终端基于接收机增益处理第二OFDM符号以获得寻呼信息。 终端可以在空闲状态下操作，确定分配给终端的超帧，在分配的超帧之间休眠，并处理每个分配的超帧中的第一和第二OFDM符号以获得寻呼信息。

公开(公告)号：US08098711B2

公开(公告)日：2012-01-17

申请号：US12947547

申请日：2010-11-16

申请人： Ravi Palanki ,  Aamod Khandekar

发明人： Ravi Palanki ,  Aamod Khandekar

IPC分类号： H04B1/00

CPC分类号： H04L5/0007 ,  H04B1/7143 ,  H04L5/0021 ,  H04L5/0048 ,  H04L9/0625 ,  H04L2209/08 ,  H04L2209/80

摘要： Techniques for efficiently designing random hopping patterns in a communications system are disclosed. The disclosed embodiments provide for methods and systems for generating random hopping patterns, updating the patterns frequently, generating different patterns for different cells/sectors, and generating patterns of nearby sub-carriers for block hopping.

公开(公告)号：US07974355B2

公开(公告)日：2011-07-05

申请号：US12091681

申请日：2006-10-27

申请人： Ravi Palanki ,  Aamod Khandekar

发明人： Ravi Palanki ,  Aamod Khandekar

IPC分类号： H04K1/10 ,  H04L27/28

CPC分类号： H04L5/0041 ,  H03M13/2725 ,  H03M13/276 ,  H03M13/2789 ,  H03M13/2957 ,  H04B1/7143 ,  H04J13/00 ,  H04L1/0003 ,  H04L1/0026 ,  H04L1/0625 ,  H04L5/0007 ,  H04L5/0026 ,  H04L5/005 ,  H04L25/0228 ,  H04L27/2602 ,  H04W52/54

摘要： A method and apparatus for generating a permutation for forward link hopping is provided, comprising initializing permutation constants, determining a value for p such that i is less than 2p wherein i is a first counter, initializing a second counter j to ‘0’, setting x to i+1 wherein x is index of elements of an array A, clocking a Pseudo-noise (PN) register n times to generate a pseudorandom number, setting x to p Least Significant Bits (LSB) of the pseudorandom number, incrementing j by 1, determining if x is greater than i, setting x equal to x−i, if x is greater than i, swapping the ith and xth element in the array A, decrementing counter i by 1, and mapping a set of hop-ports to a set of sub-carriers based upon the generated hop-permutation.

摘要翻译： 提供一种用于产生用于前向链路跳变的置换的方法和装置，包括初始化置换常数，确定p的值使得i小于2p，其中i是第一计数器，将第二计数器j初始化为“0” x到i + 1其中x是阵列A的元素的索引，对伪噪声（PN）寄存器进行n次计时以产生伪随机数，将x设置为p的最小有效位（LSB），递增j 通过1，确定x是否大于i，将x设置为x-i，如果x大于i，则将阵列A中的第i和第x个元素进行交换，将计数器i递减1，并将一组hop- 端口到基于所生成的跳位排列的一组子载波。