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：US08433357B2

公开(公告)日：2013-04-30

申请号：US11968638

申请日：2008-01-02

申请人： Alexei Gorokhov ,  Aamod Khandekar ,  Mohammad J. Barron

发明人： Alexei Gorokhov ,  Aamod Khandekar ,  Mohammad J. Barron

IPC分类号： H04B7/00

CPC分类号： H04W52/243 ,  H04W52/146 ,  H04W52/16 ,  H04W52/247 ,  H04W52/362 ,  H04W52/60 ,  H04W72/08

摘要： Techniques for mitigating interference in a wireless communication system are described. In one design, a sector may determine multiple fast other sector interference (OSI) indications for multiple subzones, with each subzone corresponding to a different portion of the system bandwidth. At least one report may be generated for the multiple OSI indications, with each report including at least one OSI indication for at least one subzone. Each report may be encoded to obtain code bits, which may then be mapped to a sequence of modulation symbols. A sequence of modulation symbols of zero values may be generated for each report with all OSI indications in the report set to zero to indicate lack of high interference in the corresponding subzones. This allows a report to be transmitted with zero power in a likely scenario. A regular OSI indication may also be determined for the system bandwidth and transmitted.

摘要翻译： 描述了用于减轻无线通信系统中的干扰的技术。 在一种设计中，扇区可以确定多个子区域的多个快速其他扇区干扰（OSI）指示，其中每个子区域对应于系统带宽的不同部分。 可以为多个OSI指示生成至少一个报告，每个报告包括至少一个子区域的至少一个OSI指示。 每个报告可以被编码以获得码位，然后可以将其映射到调制符号序列。 可以为每个报告生成零值的调制符号序列，其中报告中的所有OSI指示设置为零，以指示相应子区域中没有高干扰。 这允许在可能的情况下以零功率传输报告。 也可以为系统带宽确定常规的OSI指示并发送。

公开(公告)号：US08379578B2

公开(公告)日：2013-02-19

申请号：US11945559

申请日：2007-11-27

申请人： Alexei Gorokhov ,  Arnab Das ,  Aamod Khandekar ,  Junyi Li

发明人： Alexei Gorokhov ,  Arnab Das ,  Aamod Khandekar ,  Junyi Li

IPC分类号： H04W4/00 ,  H04B7/216

CPC分类号： H04W48/08 ,  H04B1/707 ,  H04B2201/70701 ,  H04L5/0016 ,  H04L5/0053 ,  H04W72/02

摘要： Systems and methodologies are described that facilitate communicating reverse link control information over OFDMA control channel(s) and CDMA control channel(s). Dedicated OFDMA control channel resources can be assigned to mobile device(s). Control information related to one or more logical control channels can be generated by a mobile device. Further, a physical control channel type (e.g., OFDMA control channel or a CDMA control channel) can be selected for sending the control information via the reverse link. For example, control information associated with periodic, logical control channels can be multiplexed and sent over the OFDMA control channel (e.g., utilizing the dedicated OFDMA control channel resources) while control information related to non-periodic, logical control channels can be transmitted over the CDMA control channel.

公开(公告)号：US20120120925A1

公开(公告)日：2012-05-17

申请号：US13271121

申请日：2011-10-11

申请人： Tamer Kadous ,  Aamod Khandekar ,  Dhananjay Ashok Gore ,  Alexei Gorokhov

发明人： Tamer Kadous ,  Aamod Khandekar ,  Dhananjay Ashok Gore ,  Alexei Gorokhov

IPC分类号： H04W72/04

CPC分类号： H04L5/0023 ,  H04B7/0456 ,  H04B7/061 ,  H04B7/0671 ,  H04B7/0691 ,  H04B7/0697 ,  H04L27/2602

摘要： Transmission schemes that can flexibly achieve the desired spatial multiplexing order, spatial diversity order, and channel estimation overhead order are described. For data transmission, the assigned subcarriers and spatial multiplexing order (M) for a receiver are determined, where M≧1. For each assigned subcarrier, M virtual antennas are selected from among V virtual antennas formed with V columns of an orthonormal matrix, where V≧M. V may be selected to achieve the desired spatial diversity order and channel estimation overhead order. Output symbols are mapped to the M virtual antennas selected for each assigned subcarrier by applying the orthonormal matrix. Pilot symbols are also mapped to the V virtual antennas. The mapped symbols are provided for transmission from T transmit antennas, where T≧V. Transmission symbols are generated for the mapped symbols, e.g, based on OFDM or SC-FDMA. Different cyclic delays may be applied for the T transmit antennas to improve diversity.

摘要翻译： 描述了可以灵活地实现期望的空间复用顺序，空间分集顺序和信道估计开销顺序的传输方案。 对于数据传输，确定接收机的分配子载波和空间复用顺序（M），其中M≥1。 对于每个分配的子载波，从由正交矩阵的V列形成的V个虚拟天线中选择M个虚拟天线，其中V≥M。 可以选择V以实现期望的空间分集顺序和信道估计开销顺序。 通过应用正交矩阵将输出符号映射到为每个分配的副载波选择的M个虚拟天线。 导频符号也映射到V虚拟天线。 映射的符号被提供用于从T发射天线发射，其中T≥V。 为映射符号生成传输符号，例如基于OFDM或SC-FDMA。 可以对T发射天线应用不同的循环延迟以改善分集。

公开(公告)号：US20120083302A1

公开(公告)日：2012-04-05

申请号：US13326062

申请日：2011-12-14

申请人： Mohammad Jaber Borran ,  Alexei Gorokhov ,  Aamod Khandekar ,  Tingfang Ji ,  Arumugam Chendamarai Kannan

发明人： Mohammad Jaber Borran ,  Alexei Gorokhov ,  Aamod Khandekar ,  Tingfang Ji ,  Arumugam Chendamarai Kannan

IPC分类号： H04B15/00 ,  H04W72/00

CPC分类号： H04W72/082

摘要： Systems and methods that facilitate management of interference and communication resources are provided. A differential approach is devised in which other-sector interference (OSI) and communication resources are managed by adjusting an offset (delta) value associated with the resources in response to receiving an indication of other-sector interference. An OSI indication can be issued based on a short and a long time scale, and effective interference metrics over time-frequency resources. The adjusted delta value is communicated to a serving access point, which reassigns communication resources in order to mitigate other-sector interference.

摘要翻译： 提供了便于管理干扰和通信资源的系统和方法。 设计出差分方法，其中响应于接收到其他扇区干扰的指示，通过调整与资源相关联的偏移量（delta）值来管理其他扇区干扰（OSI）和通信资源。 可以基于短时间和长时间尺度发出OSI指示，并且可以根据时间 - 频率资源发出有效的干扰度量。 经调整的增量值被传送到服务接入点，服务接入点重新分配通信资源以便减轻其他扇区干扰。

公开(公告)号：US20120063293A1

公开(公告)日：2012-03-15

申请号：US13212114

申请日：2011-08-17

申请人： Aamod Khandekar ,  Alexei Gorokhov ,  Naga Bhushan

发明人： Aamod Khandekar ,  Alexei Gorokhov ,  Naga Bhushan

IPC分类号： H04W36/00 ,  H04J11/00

CPC分类号： H04J13/0048 ,  H04B2001/70935 ,  H04B2201/70707 ,  H04W36/08 ,  H04W48/16 ,  H04W74/0833

摘要： A method includes scrambling a Walsh sequence with a random sequence to produce a scrambled Walsh sequence. The method also includes transmitting the scrambled Walsh sequence as an access-based handoff probe.

摘要翻译： 一种方法包括用随机序列对沃尔什序列进行加扰以产生加扰沃尔什序列。 该方法还包括发送加扰的沃尔什序列作为基于接入的切换探测。

公开(公告)号：US20110255522A9

公开(公告)日：2011-10-20

申请号：US11768135

申请日：2007-06-25

申请人： Alexei Gorokhov ,  Aamod Khandekar ,  Mohammad Borran ,  Rajat Prakash

发明人： Alexei Gorokhov ,  Aamod Khandekar ,  Mohammad Borran ,  Rajat Prakash

IPC分类号： H04Q7/24

CPC分类号： H04L1/0045 ,  H04L1/0061 ,  H04L1/0072 ,  H04L1/0078

摘要： Various methods and systems receiving information from an access point over a wireless link in order to reduce processing and/or transmission overhead are disclosed. Such methods and systems may include the processing of a received packet using a descrambling operation on at least a portion of the packet's information based on a MAC-ID associated with an access terminal to produce at least a first processed packet, and determining whether the received packet is targeted to the access terminal based on the first processed packet.

摘要翻译： 公开了通过无线链路从接入点接收信息以减少处理和/或传输开销的各种方法和系统。 这样的方法和系统可以包括基于与接入终端相关联的MAC-ID，使用对分组信息的至少一部分的解扰操作来处理接收到的分组，以产生至少第一处理分组，以及确定是否接收到 分组基于第一处理分组被定向到接入终端。

公开(公告)号：US20080181181A1

公开(公告)日：2008-07-31

申请号：US11945559

申请日：2007-11-27

申请人： Alexei Gorokhov ,  Arnab Das ,  Aamod Khandekar ,  Junyi Li

发明人： Alexei Gorokhov ,  Arnab Das ,  Aamod Khandekar ,  Junyi Li

IPC分类号： H04B7/216

CPC分类号： H04W48/08 ,  H04B1/707 ,  H04B2201/70701 ,  H04L5/0016 ,  H04L5/0053 ,  H04W72/02

摘要： Systems and methodologies are described that facilitate communicating reverse link control information over OFDMA control channel(s) and CDMA control channel(s). Dedicated OFDMA control channel resources can be assigned to mobile device(s). Control information related to one or more logical control channels can be generated by a mobile device. Further, a physical control channel type (e.g., OFDMA control channel or a CDMA control channel) can be selected for sending the control information via the reverse link. For example, control information associated with periodic, logical control channels can be multiplexed and sent over the OFDMA control channel (e.g., utilizing the dedicated OFDMA control channel resources) while control information related to non-periodic, logical control channels can be transmitted over the CDMA control channel.

公开(公告)号：US20080167040A1

公开(公告)日：2008-07-10

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： H04Q7/20

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：US20080130770A1

公开(公告)日：2008-06-05

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： H04L27/28

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。