公开(公告)号：WO2006124810A3

公开(公告)日：2009-04-16

申请号：PCT/US2006018789

申请日：2006-05-16

Applicant: QUALCOMM INC ,  GORE DHANANJAY ASHOK ,  AGRAWAL AVNEESH

Inventor： GORE DHANANJAY ASHOK ,  AGRAWAL AVNEESH

IPC: H04J11/00

CPC classification number: H04B1/69 ,  H04L5/0007 ,  H04L5/0048 ,  H04L25/0226 ,  H04L25/0232 ,  H04L27/2647

Abstract: Techniques to perform channel estimation with pilot weighting are described (Fig 5B). A receiver receives at least one transmission symbol for a pilot transmitted by a transmitter. Each transmission symbol may be generated with a single-carrier multiplexing scheme (e.g., IFDMA or LFDMA) or a multi-carrier multiplexing scheme (e.g., OFDMA). The receiver processes each received transmission symbol and obtains received pilot values (562). The receiver may derive an interference estimate based on the received pilot values and may estimate the reliability of the received pilot values based on the interference estimate (564). The receiver determines weights for the received pilot values based on the transmitted pilot values, the estimated reliability of the received pilot values, and/or other information (568). The receiver derives a channel estimate based on the received pilot values and the weights (570). The receiver then performs data detection (e.g., equalization) on received data values with the channel estimate (572).

Abstract translation: 描述用导频加权来执行信道估计的技术（图5B）。 接收机接收由发射机发送的导频的至少一个传输符号。 可以使用单载波复用方案（例如，IFDMA或LFDMA）或多载波复用方案（例如，OFDMA）生成每个传输符号。 接收机处理每个接收到的传输符号并获得接收到的导频值（562）。 接收机可以基于接收到的导频值导出干扰估计，并且可以基于干扰估计来估计接收到的导频值的可靠性（564）。 接收机基于发送的导频值，接收到的导频值的估计可靠性和/或其他信息来确定接收到的导频值的权重（568）。 接收器基于接收到的导频值和权重导出信道估计（570）。 然后，接收机对具有信道估计的接收数据值执行数据检测（例如，均衡）（572）。

公开(公告)号：WO2007051155A3

公开(公告)日：2007-06-21

申请号：PCT/US2006060287

申请日：2006-10-26

Applicant: QUALCOMM INC ,  KHANDEKAR AAMOD ,  AGRAWAL AVNEESH ,  GORE DHANANJAY ASHOK

Inventor： KHANDEKAR AAMOD ,  AGRAWAL AVNEESH ,  GORE DHANANJAY ASHOK

IPC: H04Q7/38 ,  H04B7/06 ,  H04J11/00

CPC classification number: H04J13/102 ,  H04B1/713 ,  H04L5/0026 ,  H04L5/0051 ,  H04L25/0204 ,  H04L25/0226 ,  H04L25/03866

Abstract: Pilot symbols transmitted from different sectors of a same base station are multiplied with a same cell specific scrambling code and a first code having low cross correlation and second codes having low cross correlation. The second code is constant over the length of the first code, but may vary for repetitions of the first code.

Abstract translation: 从相同基站的不同扇区发送的导频符号与相同的小区特定扰码和具有低互相关的第一码和具有低互相关的第二码相乘。 第二个代码在第一个代码的长度上是恒定的，但是对于第一个代码的重复可能会有所不同。

公开(公告)号：WO2012174151A2

公开(公告)日：2012-12-20

申请号：PCT/US2012042303

申请日：2012-06-13

Applicant: QUALCOMM INC ,  ABRAHAM SANTOSH PAUL ,  SAMPATH HEMANTH ,  JONES IV VINCENT KNOWLES ,  AGRAWAL AVNEESH ,  LI JUNYI

Inventor： ABRAHAM SANTOSH PAUL ,  SAMPATH HEMANTH ,  JONES IV VINCENT KNOWLES ,  AGRAWAL AVNEESH ,  LI JUNYI

IPC: H04W8/00

CPC classification number: H04W84/12 ,  H04W8/005 ,  H04W76/023 ,  Y02B60/50 ,  Y02D70/00 ,  Y02D70/1262 ,  Y02D70/142 ,  Y02D70/144 ,  Y02D70/164 ,  Y02D70/21 ,  Y02D70/22

Abstract: Certain aspects of the present disclosure generally provide methods and apparatus for enhanced discovery procedures in peer-to-peer (P2P) wireless local area networks (WLANs). With these procedures, discovery duration may be decreased, battery power consumption may be reduced during discovery, provided services may be ascertained during the device discovery phase without performing a separate service discovery phase, and/or the discovery range may be extended in an effort to discover a greater number of devices.

公开(公告)号：WO2010078271A3

公开(公告)日：2010-08-26

申请号：PCT/US2009069612

申请日：2009-12-28

Applicant: QUALCOMM INC ,  PALANKI RAVI ,  AGRAWAL AVNEESH ,  BHUSHAN NAGA

Inventor： PALANKI RAVI ,  AGRAWAL AVNEESH ,  BHUSHAN NAGA

IPC: H04W76/02

CPC classification number: H04W76/023 ,  H04W8/005 ,  H04W72/085

Abstract: Techniques for centralized control of peer discovery pilot transmission are described. In an aspect, a designated network entity (e.g., a base station or a network controller) may control transmission of peer discovery pilots by stations located within its coverage area. In one design, the network entity may receive signaling triggering peer discovery pilot transmission. The network entity may direct each of at least one station to transmit a peer discovery pilot to allow one or more stations to detect the at least one station. The peer discovery pilot may include at least one synchronization signal or at least one reference signal. The network entity may receive pilot measurements from the one or more stations for peer discovery pilots from peer stations and/or reference signals from base stations. The network entity may determine whether or not to select peer-to-peer communication for two stations based on the pilot measurements.

Abstract translation: 描述了用于集中控制对等发现导频传输的技术。 在一个方面，指定的网络实体（例如，基站或网络控制器）可以控制位于其覆盖区域内的站的对等体发现导频的传输。 在一种设计中，网络实体可以接收信令触发对等体发现导频传输。 网络实体可以引导至少一个站中的每个站发送对等方发现导频，以允许一个或多个站检测至少一个站。 对等方发现导频可以包括至少一个同步信号或至少一个参考信号。 网络实体可以从一个或多个站点接收来自对等站点的对等点发现导频的导频测量结果和/或来自基站的参考信号。 网络实体可以基于导频测量来确定是否选择两个站点的对等通信。

公开(公告)号：WO2009064531A3

公开(公告)日：2009-07-02

申请号：PCT/US2008075238

申请日：2008-09-04

Applicant: QUALCOMM INC ,  PALANKI RAVI ,  AGRAWAL AVNEESH ,  GOROKHOV ALEXEI ,  KHANDEKAR AAMOD ,  SAMPATH ASHWIN ,  LIN DEXU

Inventor： PALANKI RAVI ,  AGRAWAL AVNEESH ,  GOROKHOV ALEXEI ,  KHANDEKAR AAMOD ,  SAMPATH ASHWIN ,  LIN DEXU

IPC: H04L5/00

CPC classification number: H04L5/0053 ,  H04L1/0056 ,  H04L1/0072 ,  H04L5/0096 ,  H04L27/10 ,  H04W4/20

Abstract: Systems and methodologies are described that facilitate transmitting control information in wireless networks. Portions of bandwidth can be blanked for transmitting control information, and the control information transmitters can utilize beacon symbols to convey the control information. In this regard, interference is mitigated with respect to data transmissions over the control information bandwidth. Selected frequencies of the beacon symbols in a codeword can be used to indicate the control information. The codewords can be encoded with an error control code to provide redundancy for decoding in the presence of some interference.

Abstract translation: 描述了有助于在无线网络中发送控制信息的系统和方法。 可以将部分带宽消隐以发送控制信息，并且控制信息发射机可以利用信标符号来传达控制信息。 在这方面，相对于控制信息带宽上的数据传输，减轻了干扰。 可以使用码字中的信标符号的选定频率来指示控制信息。 可以用错误控制码对码字进行编码，以在存在一些干扰的情况下提供用于解码的冗余。

公开(公告)号：WO2007120314A3

公开(公告)日：2008-10-09

申请号：PCT/US2006061628

申请日：2006-12-05

Applicant: QUALCOMM INC ,  GOROKHOV ALEXEI ,  AGRAWAL AVNEESH ,  KEERTHI ARVIND VIJAY

Inventor： GOROKHOV ALEXEI ,  AGRAWAL AVNEESH ,  KEERTHI ARVIND VIJAY

IPC: H03M13/29

CPC classification number: H03M13/2945 ,  H03M13/2903 ,  H03M13/2948 ,  H03M13/2978 ,  H03M13/6362 ,  H03M13/6513 ,  H04L1/0041 ,  H04L1/005 ,  H04L1/0065 ,  H04L1/007 ,  H04L5/023 ,  H04L2001/0093 ,  H04N21/2381 ,  H04N21/2383 ,  H04N21/2402 ,  H04N21/2404 ,  H04N21/2405 ,  H04N21/6405 ,  H04N21/6408

Abstract: Techniques for sending signaling information using hierarchical coding are described. With hierarchical coding, individual messages for users are encoded using multiple interconnected encoders such that (1) the message for each user is sent at a data rate suitable for that user and (2) a single multicast message is generated for the messages for all users. A base station determines data rates supported by the users and the code rates to achieve these data rates. Each data rate is determined by one or more code rates. Signaling information for the users is mapped to data blocks to be sent at different data rates. Each data block is then encoded in accordance with the code rate(s) associated with the data rate for that data block. A final coded block is generated for all users and transmitted. Each user performs the complementary decoding to recover the message sent to that user.

Abstract translation: 描述使用分层编码发送信令信息的技术。 使用分层编码，使用多个互连的编码器对用户的各个消息进行编码，使得（1）以适合于该用户的数据速率发送每个用户的消息，以及（2）为所有用户生成消息的单个多播消息 。 基站确定用户支持的数据速率和码率来实现这些数据速率。 每个数据速率由一个或多个码率决定。 将用户的信令信息映射到以不同数据速率发送的数据块。 然后根据与该数据块的数据速率相关联的码率对每个数据块进行编码。 为所有用户生成最终编码块并进行传输。 每个用户执行补充解码以恢复发送给该用户的消息。

公开(公告)号：WO2007121414A3

公开(公告)日：2007-12-27

申请号：PCT/US2007066731

申请日：2007-04-16

Applicant: QUALCOMM INC ,  AGRAWAL AVNEESH ,  LEE CHONG ,  MOALLEMI KAMRAM ,  JULIAN DAVID JONATHAN ,  JAIME MANUEL E ,  DOUGLAS ROBERT KEITH ,  XIAO LU ,  ROSE GREGORY G

Inventor： AGRAWAL AVNEESH ,  LEE CHONG ,  MOALLEMI KAMRAM ,  JULIAN DAVID JONATHAN ,  JAIME MANUEL E ,  DOUGLAS ROBERT KEITH ,  XIAO LU ,  ROSE GREGORY G

IPC: H04L12/56

CPC classification number: H04W76/023 ,  A61B5/0015 ,  A61B5/0404 ,  G01S13/0209 ,  G01S13/284 ,  G01S13/765 ,  H04B5/0031 ,  H04L63/0861 ,  H04L67/24 ,  H04W4/001 ,  H04W4/02 ,  H04W4/023 ,  H04W4/027 ,  H04W8/005 ,  H04W12/06

Abstract: Various operations may be performed based on a distance-related function associated with two or more devices. For example, an association procedure for two or more devices may be based on one or more determined distances. Similarly, presence management may be based on one or more determined distances. A distance-related function may take various form including, for example, a distance between devices, two or more distances between devices, a rate of change in a relative distance between devices, relative acceleration between devices, or some combination of two or more of the these distance-related functions.

Abstract translation: 基于与两个或更多设备相关联的距离相关功能可以执行各种操作。 例如，用于两个或更多设备的关联过程可以基于一个或多个确定的距离。 类似地，呈现管理可以基于一个或多个确定的距离。 距离相关功能可以采取各种形式，包括例如设备之间的距离，设备之间的两个或更多个距离，设备之间的相对距离的变化率，设备之间的相对加速度，或者两个或更多个 这些距离相关的功能。

公开(公告)号：WO2007024853A8

公开(公告)日：2007-10-18

申请号：PCT/US2006032768

申请日：2006-08-22

Applicant: QUALCOMM INC ,  SUTIVONG ARAK ,  AGRAWAL AVNEESH ,  KADOUS TAMER

Inventor： SUTIVONG ARAK ,  AGRAWAL AVNEESH ,  KADOUS TAMER

IPC: H04B7/005

CPC classification number: H04W52/325 ,  H04B7/0417 ,  H04B7/063 ,  H04B7/0632

Abstract: Systems and methodologies are described that facilitate providing auxiliary multiple-input, multiple-output (MIMO) pilot signals to MIMO user devices in a wireless communication environment. According to some aspects, a portion of data transmission power may be reallocated for auxiliary MIMO pilot transmission during a data segment in a time slot, in order to permit a MIMO user device to perform CQI and rank prediction. Additionally or alternatively, non-MIMO pilot transmission power may be reallocated in a pilot segment in the time slot for transmission of an auxiliary MIMO pilot signal to permit the MIMO user device to demodulate data transmitted in data segments of the time slot. MIMO pilot signals may additionally be time-division multiplexed within or across time slots and may be transmitted over available Walsh codes in data and control segments.

Abstract translation: 描述了有助于在无线通信环境中向MIMO用户设备提供辅助多输入多输出（MIMO）导频信号的系统和方法。 根据一些方面，可以在时隙中的数据段期间重新分配一部分数据发送功率用于辅助MIMO导频传输，以便允许MIMO用户设备执行CQI和秩预测。 另外或替代地，可以在时隙中的导频段中重新分配非MIMO导频传输功率，以传输辅助MIMO导频信号，以允许MIMO用户设备解调在该时隙的数据段中发送的数据。 MIMO导频信号可以另外在时隙内或跨时隙进行时分复用，并且可以通过数据和控制段中的可用沃尔什码传输。

公开(公告)号：WO2006138556A3

公开(公告)日：2007-03-01

申请号：PCT/US2006023483

申请日：2006-06-16

Applicant: QUALCOMM INC ,  AGRAWAL AVNEESH ,  PRAKASH RAJAT

Inventor： AGRAWAL AVNEESH ,  PRAKASH RAJAT

IPC: H04W68/00

CPC classification number: H04W68/00

Abstract: 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. The paging block can also be compressed. OFDM can be used to transmit the encoded paging block.

Abstract translation: 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位用与一个或多个附加接入终端对应的一个或多个快速寻呼位进行编码，以产生一个或多个前向纠错位。 通过将快速寻呼帧与附加的信息帧进行时分多路复用，将共同编码的快速寻呼位广播到接入终端。 寻呼块也可以被压缩。 OFDM可以用于发送编码的寻呼块。

公开(公告)号：WO2006130541A3

公开(公告)日：2007-02-08

申请号：PCT/US2006020707

申请日：2006-05-31

Applicant: QUALCOMM INC ,  AGRAWAL AVNEESH ,  KHANDEKAR AAMOD ,  KADOUS TAMER ,  SAMPATH HEMANTH

Inventor： AGRAWAL AVNEESH ,  KHANDEKAR AAMOD ,  KADOUS TAMER ,  SAMPATH HEMANTH

IPC: H04B7/06 ,  H04L1/00 ,  H04L1/06 ,  H04L1/18 ,  H04L27/26

CPC classification number: H04B7/0697 ,  H04L1/0001 ,  H04L1/0006 ,  H04L1/0026 ,  H04L1/1812

Abstract: Systems and methodologies are described that facilitate reducing rank (e.g., of a user device) as a number of transmissions there from increases. Such rank step-down can improve interference resistance and facilitate maintaining code rate despite transmission propagation. Additionally, rank step-down information can be encoded along with CQI information to generate a 5-bit CQI signal that can facilitate updating a user's rank upon each CQI transmission (e.g., approximately every 5 ms). The described systems and/or methods can be employed in a single code word (SCW) wireless communication environment with a hybrid automatic request (HARQ) protocol.

Abstract translation: 描述了系统和方法，其随着其中的传输数量的增加而有助于减少等级（例如，用户设备）。 这种等级降级可以改善抗干扰性，并且有助于尽管传输传播来维持码率。 此外，等级降级信息可以与CQI信息一起编码，以产生可以有助于在每次CQI传输（例如，大约每5ms）更新用户的等级的5比特CQI信号。 所描述的系统和/或方法可以用于具有混合自动请求（HARQ）协议的单个码字（SCW）无线通信环境中。