公开(公告)号：US20080019314A1

公开(公告)日：2008-01-24

申请号：US11761798

申请日：2007-06-12

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

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

IPC分类号： H04Q7/00

CPC分类号： H04L5/0016 ,  H04B1/7075 ,  H04L5/0026 ,  H04L5/0053 ,  H04L25/0226 ,  H04L25/03866 ,  H04L27/2613 ,  H04L27/2657

摘要： Techniques to transmit pilot on a CDMA segment on the reverse link in a wireless communication system are described. A terminal generates a scrambling sequence based on its pilot information. The pilot information may be used for the entire duration of a call by the terminal and for all sectors with which the terminal communicates during the call. The terminal generates pilot symbols based on the scrambling sequence, maps the pilot symbols to the CDMA segment, generates OFDM symbols with the mapped pilot symbols, and sends the OFDM symbols to one or more sectors. A base station processes received OFDM symbols to obtain received symbols for the CDMA segment. The base station generates the scrambling sequence based on the pilot information for the terminal and processes the received symbols with the scrambling sequence to obtain at least one parameter (e.g., received signal strength) for the terminal.

摘要翻译： 描述了在无线通信系统中在反向链路上的CDMA分段上发送导频的技术。 终端根据其导频信息产生加扰序列。 导频信息可以用于终端和呼叫期间终端通信的所有扇区的呼叫的整个持续时间。 终端基于加扰序列生成导频符号，将导频符号映射到CDMA分段，用映射的导频符号生成OFDM符号，并将OFDM符号发送到一个或多个扇区。 基站处理接收到的OFDM符号以获得CDMA段的接收符号。 基站根据终端的导频信息生成加扰序列，并用加扰序列处理接收到的符号，以获得终端的至少一个参数（例如，接收信号强度）。

公开(公告)号：US20070287462A1

公开(公告)日：2007-12-13

申请号：US11761790

申请日：2007-06-12

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

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

IPC分类号： H04Q7/20

CPC分类号： H04W36/30 ,  H04L5/0023 ,  H04L5/0048 ,  H04L27/2613 ,  H04W36/36

摘要： Techniques for selecting serving sectors and performing handoff for a terminal on the forward and reverse links are described. The terminal may obtain pilot measurements for pilots transmitted on the forward link and may update an active set based on the pilot measurements. The terminal may send a transmission (e.g., for pilot, signaling, etc.) on the reverse link and may receive channel quality information indicative of reverse link channel quality for the terminal at multiple sectors in the active set. The transmission may include pilot, and the channel quality information from each sector may include a pilot carrier-over-thermal ratio (pCoT) determined by that sector based on the pilot. The terminal may select a serving sector based on the channel quality information, interference information, and/or other information and may send a request for handoff (e.g., via a signaling message an/or an access probe) to the selected serving sector.

摘要翻译： 描述用于选择服务扇区并对前向和反向链路上的终端执行切换的技术。 终端可以获得在前向链路上发送的导频的导频测量，并且可以基于导频测量来更新活动集。 终端可以在反向链路上发送传输（例如，用于导频，信令等），并且可以在活动集中的多个扇区处接收指示终端的反向链路信道质量的信道质量信息。 传输可以包括导频，并且来自每个扇区的信道质量信息可以包括由该扇区基于导频确定的导频载波热传输比（pCoT）。 终端可以基于信道质量信息，干扰信息和/或其他信息来选择服务扇区，并且可以向所选择的服务扇区发送切换请求（例如，经由信令消息，或访问探测器）。

公开(公告)号：US20080014979A1

公开(公告)日：2008-01-17

申请号：US11761267

申请日：2007-06-11

申请人： Alexei Gorokhov ,  Aamod Khandekar ,  Tamer Kadous ,  Mohammad Borran

发明人： Alexei Gorokhov ,  Aamod Khandekar ,  Tamer Kadous ,  Mohammad Borran

IPC分类号： H04Q7/20

CPC分类号： H04W52/16 ,  H04W52/146 ,  H04W52/241 ,  H04W52/243 ,  H04W52/244 ,  H04W52/325 ,  H04W52/40

摘要： Techniques for controlling transmit power of a terminal are described. The terminal may send a first transmission (e.g., for pilot or signaling) on the reverse link, receive feedback (e.g., a power control command or an erasure indicator) for the first transmission, and adjust a reference power level based on the feedback. The terminal may also receive interference information and possibly other parameters such as a pilot quality indicator (PQI), an offset factor, and a boost factor from a sector. The terminal may determine transmit power for a second transmission to the sector based on the interference information, the reference power level, and/or the other parameters. The terminal may receive the feedback from one sector and may send the second transmission with CDMA or OFDMA to the same sector or a different sector.

摘要翻译： 描述用于控制终端的发射功率的技术。 终端可以在反向链路上发送第一传输（例如，用于导频或信令），接收用于第一传输的反馈（例如，功率控制命令或擦除指示符），并且基于反馈来调整参考功率电平。 终端还可以从扇区接收干扰信息和可能的其它参数，例如导频质量指示符（PQI），偏移因子和增强因子。 终端可以基于干扰信息，参考功率电平和/或其他参数来确定对扇区的第二传输的发射功率。 终端可以从一个扇区接收反馈，并且可以将具有CDMA或OFDMA的第二传输发送到同一扇区或不同扇区。

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：US20070297379A1

公开(公告)日：2007-12-27

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：US20070197254A1

公开(公告)日：2007-08-23

申请号：US11620033

申请日：2007-01-04

申请人： Mohammad Borran ,  Aamod Khandekar ,  Avneesh Agrawal ,  Tingfang Ji

发明人： Mohammad Borran ,  Aamod Khandekar ,  Avneesh Agrawal ,  Tingfang Ji

IPC分类号： H04B7/00 ,  H04Q7/20

CPC分类号： H04W52/247 ,  H04W52/146 ,  H04W52/241 ,  H04W52/243 ,  H04W52/246 ,  H04W52/36 ,  H04W52/54

摘要： Systems and methodologies are described that facilitate serving sector directed transmit power control in a wireless communication environment. Under certain conditions, an access point can have better data with which to determine appropriate power levels than an individual terminal. Accordingly, an access point can transmit power control information to one or more terminals supported by the access point overriding normal power determination procedures. In particular, power control information can be included within an assignment message that designates resources (e.g., frequency, time) assigned to a terminal. Power control information can be based upon SNR, quality of service requirements, interference information, any other relevant information or any combination thereof.

摘要翻译： 描述了在无线通信环境中促进服务于扇区定向发射功率控制的系统和方法。 在某些条件下，接入点可以具有比单个终端确定适当功率级别的更好的数据。 因此，接入点可以将功率控制信息发送到由接入点支持的一个或多个终端覆盖正常功率确定过程。 特别地，功率控制信息可以被包括在指定分配给终端的资源（例如，频率，时间）的分配消息内。 功率控制信息可以基于SNR，服务质量要求，干扰信息，任何其他相关信息或其任何组合。

公开(公告)号：US20070201407A1

公开(公告)日：2007-08-30

申请号：US11620037

申请日：2007-01-04

申请人： Mohammad Borran ,  Aamod Khandekar

发明人： Mohammad Borran ,  Aamod Khandekar

IPC分类号： H04B7/216

CPC分类号： H04W52/08 ,  H04W52/12 ,  H04W52/146 ,  H04W52/18 ,  H04W52/20 ,  H04W52/265 ,  H04W52/40 ,  H04W52/54

摘要： Techniques for performing power control and handoff are described. In an aspect, power control (PC) is supported with multiple PC modes such as an up-down PC mode and an erasure-based PC mode. One PC mode may be selected for use. Signaling may be sent to indicate the selected PC mode. If the up-down PC mode is selected, then a base station estimates the received signal quality for a terminal and sends PC commands to direct the terminal to adjust its transmit power. If the erasure-based PC mode is selected, then the base station sends erasure indications that indicate whether codewords received from the terminal are erased or non-erased. For both PC modes, the terminal adjusts its transmit power based on the power control feedback (e.g., PC commands and/or erasure indications) to achieve a target level of performance (e.g., a target erasure rate for the codewords). The erasure indications may also be used for handoff.

摘要翻译： 描述用于执行功率控制和切换的技术。 在一个方面，功率控制（PC）由多种PC模式支持，例如升级PC模式和基于擦除的PC模式。 可以选择一种PC模式使用。 可以发送信号以指示所选的PC模式。 如果选择了上下PC模式，则基站估计终端的接收信号质量，并发送PC命令以指示终端调整其发射功率。 如果选择基于擦除的PC模式，则基站发送指示从终端接收到的码字被擦除或不被擦除的擦除指示。 对于两种PC模式，终端基于功率控制反馈（例如，PC命令和/或擦除指示）调整其发射功率，以实现目标性能水平（例如，码字的目标擦除率）。 擦除指示也可用于切换。

公开(公告)号：US20070207812A1

公开(公告)日：2007-09-06

申请号：US11620035

申请日：2007-01-04

申请人： Mohammad Borran ,  Aamod Khandekar ,  Tingfang Ji

发明人： Mohammad Borran ,  Aamod Khandekar ,  Tingfang Ji

IPC分类号： H04Q7/20

CPC分类号： H04W36/22 ,  H04L1/1829 ,  H04L27/2608 ,  H04L2001/0092 ,  H04W36/18

摘要： Systems and methodologies are described that facilitate soft handoff and enhanced performance in a wireless communication environment. In multiple access systems, access points assign certain resources (e.g., time, frequency, code) to each terminal. This assignment information can also be provided to neighboring sectors, allowing such sectors to receive and decode terminal transmissions. The information can be provided via backhaul signaling. Decoding by sectors within the active set of the terminal facilitates smooth transition as terminals move between sectors during soft handoff. In addition, sectors can signal successful receipt and decoding of transmissions, avoiding redundant processing.

摘要翻译： 描述了在无线通信环境中促进软切换和增强的性能的系统和方法。 在多址系统中，接入点为每个终端分配某些资源（例如，时间，频率，码）。 该分配信息也可以提供给相邻扇区，允许这些扇区接收和解码终端传输。 信息可以通过回程信令提供。 当终端在软切换期间在扇区之间移动时，终端的有源集合内的扇区的解码有助于平滑过渡。 此外，扇区可以发送传输成功的接收和解码，避免冗余处理。

公开(公告)号：US20070047495A1

公开(公告)日：2007-03-01

申请号：US11261159

申请日：2005-10-27

申请人： Tingfang Ji ,  Mohammad Borran

发明人： Tingfang Ji ,  Mohammad Borran

IPC分类号： H04B7/216

CPC分类号： A61K31/501 ,  H04L1/1812 ,  H04W36/18

摘要： A terminal communicates with a serving base station and at least one soft handoff (SHO) base station for soft handoff on the reverse link in a wireless communication system. In one design, the serving base station schedules the terminal for transmission on the reverse link, forms an assignment for the terminal, and generates signaling for the terminal. The assignment indicates communication parameter(s) to be used by the terminal for transmission on the reverse link. The signaling contains sufficient information to allow the SHO base station(s) to receive and process the transmission from the terminal. The serving base station sends the signaling via a backhaul to the SHO base station(s). Each SHO base station receives the signaling via the backhaul, receives the transmission from the terminal via the reverse link, and processes the transmission in accordance with the signaling to recover the data sent in the transmission.

摘要翻译： 终端在无线通信系统中与反向链路上的服务基站和至少一个软切换（SHO）基站进行软切换通信。 在一种设计中，服务基站在反向链路上调度终端进行传输，形成终端的分配，并为终端生成信令。 分配表示终端用于反向链路传输的通信参数。 信令包含足够的信息，以允许SHO基站从终端接收和处理传输。 服务基站通过回程将信令发送到SHO基站。 每个SHO基站经由回程接收信令，经由反向链路从终端接收传输，并根据该信令处理该传输，以恢复传输中发送的数据。

公开(公告)号：US20070237067A9

公开(公告)日：2007-10-11

申请号：US10744351

申请日：2003-12-22

申请人： Mohammad Borran ,  Prabodh Varshney ,  Hannu Vilpponen ,  Panayiotis Papadimitriou

发明人： Mohammad Borran ,  Prabodh Varshney ,  Hannu Vilpponen ,  Panayiotis Papadimitriou

IPC分类号： H04J11/00

CPC分类号： H04L25/03834 ,  H04L5/026 ,  H04L25/0204 ,  H04L25/0212 ,  H04L25/022 ,  H04L25/0224 ,  H04L25/0246 ,  H04L25/025 ,  H04L27/2602 ,  H04L27/2644 ,  H04L27/265

摘要： A apparatus and method for improved performance in radio telecommunications systems, and in particular multi-carrier code division multiple access (MC-CDMA) networks that employ pulse-shaping filters on the transmit side of a radio link. In order to more accurately transmit a radio signal bearing a symbol sequence, the modulated and spread information stream is upsampled using a technique that involves inserting zeros in the frequency domain. A corresponding downsampling procedure on the receive side permits reconstruction of the transmitted symbols. A new channel estimation algorithm may also be used, and the improved channel estimation advantageously employed to obtain more faithful symbol detection.

摘要翻译： 一种在无线电电信系统中改进性能的装置和方法，特别是在无线电链路的发射侧使用脉冲整形滤波器的多载波码分多址（MC-CDMA）网络。 为了更准确地发送携带符号序列的无线电信号，使用涉及在频域中插入零的技术对经调制和扩展的信息流进行上采样。 在接收侧的相应的下采样过程允许重传发送的符号。 还可以使用新的信道估计算法，并且有利地采用改进的信道估计来获得更忠实的符号检测。