公开(公告)号：US07990840B2

公开(公告)日：2011-08-02

申请号：US11369899

申请日：2006-03-07

申请人： Rajiv Laroia ,  Arnab Das ,  Junyi Li

发明人： Rajiv Laroia ,  Arnab Das ,  Junyi Li

IPC分类号： H04J11/00 ,  H04J1/00 ,  H04W4/00

CPC分类号： H04W52/143 ,  H04B7/022 ,  H04B7/0491 ,  H04B7/0671 ,  H04H20/22 ,  H04H20/26 ,  H04H20/72 ,  H04L27/2604 ,  H04W52/322 ,  H04W52/42 ,  H04W52/54

摘要： First and second transmitters transmit signals communicating the same information, e.g., program segment, but at different times. Different carriers may, but need not be, used by the different transmitters. If a wireless terminal can not recover broadcast segment information from one carrier, the wireless terminal can switch to another transmitter and recover the information, e.g., on another carrier, since the broadcasts are intentionally offset in time. In some embodiments, the timing is offset such that a single channel receiver is able to recover signals corresponding to the same program segment from two sources, and perform a decoding and information recovery using input from both sources, where recovery using input from a single source is not possible. Symbol level timing synchronization of base stations is not required thereby allowing for simpler implementations and/or lower overhead, as compared to systems which require base stations to be synchronized to the symbol timing level.

摘要翻译： 第一和第二发射机发送传送相同信息的信号，例如程序段，但是在不同的时间。 不同的载波可以但不一定被不同的发射机使用。 如果无线终端无法从一个载波恢复广播段信息，则无线终端可以切换到另一个发射机，并且例如在另一载波上恢复信息，因为广播被有意地及时地偏移。 在一些实施例中，定时被偏移，使得单个信道接收机能够从两个源恢复对应于相同节目段的信号，并且使用来自两个源的输入执行解码和信息恢复，其中使用来自单个源的输入进行恢复 不可能。 与要求基站与符号定时电平同步的系统相比，不需要基站的符号电平定时同步，从而允许更简单的实现和/或较低的开销。

公开(公告)号：US08989084B2

公开(公告)日：2015-03-24

申请号：US11549604

申请日：2006-10-13

申请人： Prashanth Hande ,  Arnab Das ,  Junyi Li ,  Sundeep Rangan ,  Rajiv Laroia

发明人： Prashanth Hande ,  Arnab Das ,  Junyi Li ,  Sundeep Rangan ,  Rajiv Laroia

IPC分类号： H04W4/00 ,  H04W16/08 ,  H04W16/06

CPC分类号： H04W16/08 ,  H04B17/24 ,  H04B17/382 ,  H04W4/06 ,  H04W16/06 ,  H04W24/10 ,  H04W36/20 ,  H04W52/143 ,  H04W52/343 ,  H04W52/40 ,  H04W72/082

摘要： Methods and apparatus are described where loading information regarding loading conditions at a neighboring base station is received at a first base station and then communicated, e.g., broadcast, by the first base station to mobiles within the cell in which the first base station is located. Since the neighbor base station's loading information is being communicated to a mobile currently connected to the first base station via a reliable communications channel of the first base station, the mobile can be expected to be able to reliably recover loading factor information corresponding to not only the first base station but to the neighboring base station. By utilizing such loading factor information, the mobile can generate an improved uplink interference report. The first base station receives such interference reports from wireless terminals in its cell, facilitating efficient resource allocation and interference control.

摘要翻译： 描述了在第一基站处接收关于相邻基站处的负载条件的信息的装置，然后由第一基站传送（例如，广播）到第一基站所在的小区内的移动台。 由于相邻基站的载入信息通过第一基站的可靠通信信道被传送到当前连接到第一基站的移动台，所以可以期望移动台能够可靠地恢复与不仅仅是 第一个基站，但是到邻近的基站。 通过利用这种负载因子信息，移动台可以产生改进的上行链路干扰报告。 第一基站从其小区中的无线终端接收到这种干扰报告，有利于高效的资源分配和干扰控制。

公开(公告)号：US08811348B2

公开(公告)日：2014-08-19

申请号：US11333788

申请日：2006-01-17

申请人： Sundeep Rangan ,  Rajiv Laroia ,  Arnab Das ,  Junyi Li ,  John Fan

发明人： Sundeep Rangan ,  Rajiv Laroia ,  Arnab Das ,  Junyi Li ,  John Fan

IPC分类号： H04W4/00

CPC分类号： H04W24/10 ,  H04B17/24 ,  H04B17/336

摘要： A wireless terminal measures the received power of a tone corresponding to an intention base station null output, measures the received power of pilot signals, and determines a signal to noise ratio of the received pilot signal. The wireless terminal calculates a downlink signal to noise ratio saturation level representative of the SNR of a received downlink signal that the wireless terminal would measure on a received signal transmitted by the base station at infinite power. The calculated downlink signal to noise ratio saturation level is a function of the determined interference power, the measured received pilot signal power, and the determined pilot signal SNR. A report is generated corresponding to one of a plurality of quantized levels, the selected quantized level being the closest representation to the calculated downlink signal to noise ratio saturation level. The generated report is communicated using a dedicated control channel segment in a predetermined uplink timing structure.

摘要翻译： 无线终端测量对应于意图基站空输出的音调的接收功率，测量导频信号的接收功率，并确定接收到的导频信号的信噪比。 无线终端计算表示无线终端将以无限大功率发送的接收信号对接收到的下行链路信号的SNR进行SNR测量的下行链路信噪比饱和度。 所计算的下行链路信噪比饱和电平是所确定的干扰功率，测量的接收导频信号功率和确定的导频信号SNR的函数。 产生对应于多个量化电平中的一个的报告，所选择的量化电平是与所计算的下行链路信噪比饱和电平最接近的表示。 使用专用控制信道段在预定的上行链路定时结构中传送所生成的报告。

公开(公告)号：US08774846B2

公开(公告)日：2014-07-08

申请号：US11621955

申请日：2007-01-10

申请人： Rajiv Laroia ,  Sundeep Rangan ,  Arnab Das ,  Frank A. Lane ,  Junyi Li

发明人： Rajiv Laroia ,  Sundeep Rangan ,  Arnab Das ,  Frank A. Lane ,  Junyi Li

IPC分类号： H04B7/00 ,  H04W36/00

CPC分类号： H04W40/244 ,  H04J3/0602 ,  H04L5/0016 ,  H04L5/0035 ,  H04L5/0048 ,  H04L27/2601 ,  H04L27/261 ,  H04W8/005 ,  H04W16/14 ,  H04W28/04 ,  H04W28/18 ,  H04W36/16 ,  H04W36/24 ,  H04W40/24 ,  H04W48/08 ,  H04W48/16 ,  H04W48/20 ,  H04W52/0229 ,  H04W52/04 ,  H04W72/02 ,  H04W76/14 ,  H04W84/042 ,  H04W84/18 ,  H04W88/02 ,  H04W88/04 ,  H04W88/06 ,  H04W88/10 ,  Y02D70/1222 ,  Y02D70/1224 ,  Y02D70/1242 ,  Y02D70/1262 ,  Y02D70/142 ,  Y02D70/144 ,  Y02D70/146 ,  Y02D70/162 ,  Y02D70/164 ,  Y02D70/168 ,  Y02D70/22 ,  Y02D70/23

摘要： A portable wireless terminal generates and transmits a beacon signal. The beacon signal includes a sequence of beacon signal bursts, each beacon signal burst including one or more beacon symbols. A beacon symbol is transmitted using the air link resources of a beacon symbol transmission unit at a relatively high transmission power level with respect to user data symbols transmitted from the same wireless terminal, thus facilitating easy detection by other wireless terminals. The beacon symbols of the beacon signal occupy a small fraction of the total available air link resources. Beacon signals can, and sometimes do, convey wireless terminal identification information, via the location of the beacon symbols within the portion of the air link resource reserved for beacon symbol transmission units.

摘要翻译： 便携式无线终端生成并发送信标信号。 信标信号包括信标信号脉冲序列，每个信标信号脉冲串包括一个或多个信标符号。 相对于从同一无线终端发送的用户数据符号，以相对高的发送功率电平的信标符号发送单元的空中链路资源发送信标符号，便于其他无线终端的容易检测。 信标信号的信标符号占据总可用空中链路资源的一小部分。 信标信号可以并且有时可以通过为为信标符号传输单元预留的空中链路资源的部分内的信标符号的位置传送无线终端识别信息。

公开(公告)号：US08743843B2

公开(公告)日：2014-06-03

申请号：US11621957

申请日：2007-01-10

申请人： Rajiv Laroia ,  Sundeep Rangan ,  Arnab Das ,  Frank A. Lane ,  Junyi Li

发明人： Rajiv Laroia ,  Sundeep Rangan ,  Arnab Das ,  Frank A. Lane ,  Junyi Li

IPC分类号： H04J3/00

CPC分类号： H04W40/244 ,  H04J3/0602 ,  H04L5/0016 ,  H04L5/0035 ,  H04L5/0048 ,  H04L27/2601 ,  H04L27/261 ,  H04W8/005 ,  H04W16/14 ,  H04W28/04 ,  H04W28/18 ,  H04W36/16 ,  H04W36/24 ,  H04W40/24 ,  H04W48/08 ,  H04W48/16 ,  H04W48/20 ,  H04W52/0229 ,  H04W52/04 ,  H04W72/02 ,  H04W76/14 ,  H04W84/042 ,  H04W84/18 ,  H04W88/02 ,  H04W88/04 ,  H04W88/06 ,  H04W88/10 ,  Y02D70/1222 ,  Y02D70/1224 ,  Y02D70/1242 ,  Y02D70/1262 ,  Y02D70/142 ,  Y02D70/144 ,  Y02D70/146 ,  Y02D70/162 ,  Y02D70/164 ,  Y02D70/168 ,  Y02D70/22 ,  Y02D70/23

摘要： Wireless terminal beacon signaling is used to achieve timing synchronization between two wireless terminals in a wireless communication system, e.g., in an ad hoc network lacking a centralized timing reference. An exemplary timing structure used by an individual wireless terminal includes a beacon transmission time interval, a beacon monitoring time interval and a silence time interval. A first wireless terminal monitoring for beacon signals from other wireless terminals, detects a beacon signal portion from a second wireless terminal and determines a timing adjustment as a function of the detected beacon signal portion. The first wireless terminal applies the determined timing adjustment, e.g., time shifting its timing structure, such that its beacon signal can be detected by the second wireless terminal. Implementation of the determined timing adjustment sets the timing structures of the two wireless terminals to have a fixed relationship thereby allowing for coordinated communications including a peer-to-peer communications session.

摘要翻译： 无线终端信标信令用于实现无线通信系统中的两个无线终端之间的定时同步，例如在缺乏集中定时参考的自组织网络中。 单个无线终端使用的示例性定时结构包括信标发送时间间隔，信标监视时间间隔和静默时间间隔。 监测来自其他无线终端的信标信号的第一无线终端从第二无线终端检测信标信号部分，并根据检测到的信标信号部分确定定时调整。 第一无线终端应用确定的定时调整，例如时移其定时结构，使得其信标信号可被第二无线终端检测。 确定的定时调整的实现将两个无线终端的定时结构设置为具有固定关系，从而允许包括对等通信会话的协调通信。

公开(公告)号：US20140134953A9

公开(公告)日：2014-05-15

申请号：US11333788

申请日：2006-01-17

申请人： Sundeep Rangan ,  Rajiv Laroia ,  Arnab Das ,  Junyi Li ,  John Fan

发明人： Sundeep Rangan ,  Rajiv Laroia ,  Arnab Das ,  Junyi Li ,  John Fan

IPC分类号： H04B1/00

CPC分类号： H04W24/10 ,  H04B17/24 ,  H04B17/336

摘要： A wireless terminal measures the received power of a tone corresponding to an intention base station null output, measures the received power of pilot signals, and determines a signal to noise ratio of the received pilot signal. The wireless terminal calculates a downlink signal to noise ratio saturation level representative of the SNR of a received downlink signal that the wireless terminal would measure on a received signal transmitted by the base station at infinite power. The calculated downlink signal to noise ratio saturation level is a function of the determined interference power, the measured received pilot signal power, and the determined pilot signal SNR. A report is generated corresponding to one of a plurality of quantized levels, the selected quantized level being the closest representation to the calculated downlink signal to noise ratio saturation level. The generated report is communicated using a dedicated control channel segment in a predetermined uplink timing structure.

摘要翻译： 无线终端测量对应于意图基站空输出的音调的接收功率，测量导频信号的接收功率，并确定接收到的导频信号的信噪比。 无线终端计算表示无线终端将以无限大功率发送的接收信号对接收到的下行链路信号的SNR进行SNR测量的下行链路信噪比饱和度。 所计算的下行链路信噪比饱和电平是所确定的干扰功率，测量的接收导频信号功率和确定的导频信号SNR的函数。 产生对应于多个量化电平中的一个的报告，所选择的量化电平是与所计算的下行链路信噪比饱和电平最接近的表示。 使用专用控制信道段在预定的上行链路定时结构中传送所生成的报告。

公开(公告)号：US20130242888A1

公开(公告)日：2013-09-19

申请号：US13616644

申请日：2012-09-14

申请人： Arnab Das ,  Rajiv Laroia ,  Junyi Li

发明人： Arnab Das ,  Rajiv Laroia ,  Junyi Li

IPC分类号： H04W72/04

CPC分类号： H04W72/0413 ,  H04W72/1252 ,  H04W72/1284

摘要： An uplink dedicated control channel reporting structure includes a plurality of different bit size reports, e.g. 1 bit, 3 bit and 4 bit reports, for reporting a wireless terminal's backlog information of uplink traffic request group queues. Smaller bit size reports are transmitted more frequently than larger reports. A 1 bit request report indicates whether or not there are any MAC frames of information to be communicated in a set of two request group queues. A 3 bit request report indicates an amount of backlog information corresponding to a first set of request group queues and a second set of request group queues. A 4 bit request report indicates an amount of backlog information corresponding to a set of request group queues. The 4 bit request report is capable of reporting information on any of a plurality of uplink traffic channel request group queues being maintained by the wireless terminal.

摘要翻译： 上行链路专用控制信道报告结构包括多个不同比特大小的报告，例如， 1位，3位和4位报告，用于报告无线终端的上行流量请求组队列的积压信息。 比较大的报告传送的位数较小的报告更频繁。 1位请求报告指示在一组两个请求组队列中是否存在要传送的任何MAC帧的信息。 3位请求报告指示对应于第一组请求组队列和第二组请求组队列的积压信息量。 4位请求报告指示与一组请求组队列对应的积压信息量。 4位请求报告能够报告由无线终端维护的多个上行链路业务信道请求组队列中的任一个的信息。

公开(公告)号：US08363592B2

公开(公告)日：2013-01-29

申请号：US11370222

申请日：2006-03-07

申请人： Rajiv Laroia ,  Arnab Das ,  Junyi Li

发明人： Rajiv Laroia ,  Arnab Das ,  Junyi Li

IPC分类号： H04N7/12

CPC分类号： H04W52/143 ,  H04B7/022 ,  H04B7/0491 ,  H04B7/0671 ,  H04H20/22 ,  H04H20/26 ,  H04H20/72 ,  H04L27/2604 ,  H04W52/322 ,  H04W52/42 ,  H04W52/54

摘要： A transmitter apparatus at a base station transmits program information using a plurality of carriers with at least some of the carriers having different transmit power levels. The carrier associated with the highest transmit power level conveys broadcast information carrying basic program information. A carrier associated with a lower power level conveys broadcast information including enhancement information and/or additional content. The enhancement information and/or additional content may include a higher level of video and/or audio resolution, additional video and/or audio content, support for additional languages, a text stream, and/or advertisements. A wireless terminal tunes, receives and processes the broadcast information. A wireless terminal can recover different levels of resolution of a broadcast program, e.g., a digital video broadcast program, and/or different amounts of additional content, depending upon which carriers are being used.

摘要翻译： 基站的发射机装置使用具有不同发射功率电平的至少一些载波的多个载波来发射节目信息。 与最高发射功率电平相关联的载波传达载有基本节目信息的广播信息。 与较低功率级相关联的载波传达包括增强信息和/或附加内容的广播信息。 增强信息和/或附加内容可以包括更高级别的视频和/或音频分辨率，附加视频和/或音频内容，对附加语言的支持，文本流和/或广告。 无线终端调谐，接收和处理广播信息。 取决于正在使用哪些载体，无线终端可以恢复广播节目的不同级别的分辨率，例如数字视频广播节目和/或不同数量的附加内容。

公开(公告)号：US20080130480A1

公开(公告)日：2008-06-05

申请号：US11857761

申请日：2007-09-19

申请人： Junyi Li ,  Arnab Das ,  Rajiv Laroia

发明人： Junyi Li ,  Arnab Das ,  Rajiv Laroia

IPC分类号： H04J11/00

CPC分类号： H04L5/0048 ,  H04L5/0007 ,  H04L5/1469 ,  H04L27/2656 ,  H04W72/04

摘要： Systems and methodologies are described that facilitate generating and/or analyzing downlink transmission units in OFDM TDD environments. Beacon signals may be selectively inserted within downlink transmission units; for example, the position of Beacon signals may vary from cell to cell. Further, the position may be a function of a characteristic of a cell (e.g., cell identifier) and/or an expected drift. Moreover, a Beacon signal may be interjected at a location in a downlink transmission unit so as to mitigate alignment with disparate Beacon signals in downlink transmission units associated with differing cells. Additionally, an identity of a cell providing downlink transmission units may be determined by analyzing a position of the Beacon signal within the downlink transmission units.

摘要翻译： 描述了有助于在OFDM TDD环境中生成和/或分析下行链路传输单元的系统和方法。 信标信号可以选择性地插入在下行链路传输单元内; 例如，信标信号的位置可以随单元而变化。 此外，该位置可以是小区的特性（例如，小区标识符）和/或预期漂移的函数。 此外，信标信号可以被插入在下行链路传输单元中的位置处，以便在与不同小区相关联的下行链路传输单元中减轻与不同信标信号的对准。 此外，可以通过分析下行链路传输单元内的信标信号的位置来确定提供下行链路传输单元的小区的身份。

公开(公告)号：US20070247365A1

公开(公告)日：2007-10-25

申请号：US11621955

申请日：2007-01-10

申请人： Rajiv Laroia ,  Sundeep Rangan ,  Arnab Das ,  Frank Lane ,  Junyi Li

发明人： Rajiv Laroia ,  Sundeep Rangan ,  Arnab Das ,  Frank Lane ,  Junyi Li

IPC分类号： G01S1/00

CPC分类号： H04W40/244 ,  H04J3/0602 ,  H04L5/0016 ,  H04L5/0035 ,  H04L5/0048 ,  H04L27/2601 ,  H04L27/261 ,  H04W8/005 ,  H04W16/14 ,  H04W28/04 ,  H04W28/18 ,  H04W36/16 ,  H04W36/24 ,  H04W40/24 ,  H04W48/08 ,  H04W48/16 ,  H04W48/20 ,  H04W52/0229 ,  H04W52/04 ,  H04W72/02 ,  H04W76/14 ,  H04W84/042 ,  H04W84/18 ,  H04W88/02 ,  H04W88/04 ,  H04W88/06 ,  H04W88/10 ,  Y02D70/1222 ,  Y02D70/1224 ,  Y02D70/1242 ,  Y02D70/1262 ,  Y02D70/142 ,  Y02D70/144 ,  Y02D70/146 ,  Y02D70/162 ,  Y02D70/164 ,  Y02D70/168 ,  Y02D70/22 ,  Y02D70/23

摘要： A portable wireless terminal generates and transmits a beacon signal. The beacon signal includes a sequence of beacon signal bursts, each beacon signal burst including one or more beacon symbols. A beacon symbol is transmitted using the air link resources of a beacon symbol transmission unit at a relatively high transmission power level with respect to user data symbols transmitted from the same wireless terminal, thus facilitating easy detection by other wireless terminals. The beacon symbols of the beacon signal occupy a small fraction of the total available air link resources. Beacon signals can, and sometimes do, convey wireless terminal identification information, via the location of the beacon symbols within the portion of the air link resource reserved for beacon symbol transmission units.

摘要翻译： 便携式无线终端生成并发送信标信号。 信标信号包括信标信号脉冲序列，每个信标信号脉冲串包括一个或多个信标符号。 相对于从同一无线终端发送的用户数据符号，以相对高的发送功率电平的信标符号发送单元的空中链路资源发送信标符号，便于其他无线终端的容易检测。 信标信号的信标符号占据总可用空中链路资源的一小部分。 信标信号可以并且有时可以通过为为信标符号传输单元预留的空中链路资源的部分内的信标符号的位置传送无线终端识别信息。