公开(公告)号：US20050226421A1

公开(公告)日：2005-10-13

申请号：US11060840

申请日：2005-02-18

Applicant: Alain Briancon ,  Akinlolu Kumoluyi ,  Alan Carlton ,  Richard Herschaft ,  John Hoffmann ,  Prabhakar Chitrapu ,  Debashish Purkayastha

Inventor： Alain Briancon ,  Akinlolu Kumoluyi ,  Alan Carlton ,  Richard Herschaft ,  John Hoffmann ,  Prabhakar Chitrapu ,  Debashish Purkayastha

IPC: H04K1/00 ,  H04L9/08 ,  H04L9/32 ,  H04L29/06 ,  H04W12/00 ,  H04W12/12

CPC classification number: H04L63/12 ,  H04L9/3247 ,  H04L2209/608 ,  H04L2209/805 ,  H04W12/00505 ,  H04W12/10 ,  H04W12/12

Abstract: A method and system for using watermarks in communication systems is disclosed. Watermarks are typically small amounts of auxiliary data embedded in a cover signal. The cover signal is the primary communication signal, and may be binary bits, multi valued symbols, analog waveforms, or any other type of primary communication signal. Security strength indication, location tracking, intrusion detection and transmission of non-security information using watermarks are disclosed, along with a system for managing watermarks.

Abstract translation: 公开了一种在通信系统中使用水印的方法及系统。 水印通常是嵌入封面信号中的少量辅助数据。 覆盖信号是主要通信信号，并且可以是二进制位，多值符号，模拟波形或任何其它类型的主要通信信号。 公开了使用水印的安全强度指示，位置跟踪，入侵检测和非安全信息的传输，以及用于管理水印的系统。

公开(公告)号：US20050221848A1

公开(公告)日：2005-10-06

申请号：US11129789

申请日：2005-05-16

Applicant: Prabhakar Chitrapu ,  Louis Guccione ,  Andrew Bednarz

Inventor： Prabhakar Chitrapu ,  Louis Guccione ,  Andrew Bednarz

IPC: H04B1/7073 ,  H04B1/7083 ,  H04Q7/34 ,  H04B1/69

CPC classification number: H04B1/70735 ,  H04B1/7083

Abstract: The system and method of the present invention establishes a communication link between a user equipment (UE) and a base station in a communication system having a plurality of base stations which each transmit a common primary synchronization code (PSC) in a primary synchronization channel in conjunction with a base station specific secondary synchronization code (SSC) within a system frame, which receives with the UE an input signal including the PSC and SSC from at least one of the base stations. The UE analyzes the input signal to detect any received PSCs within a selected time period which has duration corresponding to the length of a system frame and determining a relative location of a strongest PSC within the selected time period. The input signal is then processed to remove the PSC from at least the determined PSC location. A secondary synchronization code (SSC) is then detected for the determined location from the processed signal. The communication link is then established using the detected SSCs.

公开(公告)号：US20050192040A1

公开(公告)日：2005-09-01

申请号：US11022704

申请日：2004-12-27

Applicant: Prabhakar Chitrapu

Inventor： Prabhakar Chitrapu

IPC: H04M1/656 ,  H04M11/10 ,  H04W4/12 ,  H04Q7/20

CPC classification number: H04W4/12 ,  H04M1/656 ,  H04M2250/68

Abstract: A connection between a wireless transmit/receive unit (WTRU) and another node through a wireless network is established. The connection is used for communication. A user input is received. In response to the received user input, a communication through the connection is recoded while the WTRU still communicates the communication to a user of the WTRU. The recorded communication is retrieved and the recorded communication is communicated to the user at a later time.

Abstract translation: 通过无线网络建立无线发射/接收单元（WTRU）与另一节点之间的连接。 连接用于通信。 接收用户输入。 响应于所接收的用户输入，通过连接的通信被重新编码，而WTRU仍然将该通信传送给WTRU的用户。 记录的通信被检索，并且记录的通信在稍后的时间被传送给用户。

公开(公告)号：US20050154925A1

公开(公告)日：2005-07-14

申请号：US10996493

申请日：2004-11-23

Applicant: Prabhakar Chitrapu ,  Alain Briancon ,  Akinlolu Kumoluyi ,  Alan Carlton ,  Kiran Vanganuru ,  Richard Herschaft ,  John Hoffmann ,  John Thommana ,  Debashish Purkayastha ,  Guodong Zhang ,  Robert Olesen ,  Alexander Reznik ,  TieJun Shan ,  Sung-Hyuk Shin ,  Amit Singhal

Inventor： Prabhakar Chitrapu ,  Alain Briancon ,  Akinlolu Kumoluyi ,  Alan Carlton ,  Kiran Vanganuru ,  Richard Herschaft ,  John Hoffmann ,  John Thommana ,  Debashish Purkayastha ,  Guodong Zhang ,  Robert Olesen ,  Alexander Reznik ,  TieJun Shan ,  Sung-Hyuk Shin ,  Amit Singhal

IPC: G06T1/00 ,  H04L9/00 ,  H04L9/08 ,  H04L9/32 ,  H04L12/56 ,  H04W12/02 ,  H04W88/02

CPC classification number: H04W12/04 ,  H04L9/3234 ,  H04L9/3247 ,  H04L2463/061 ,  H04L2463/103 ,  H04W12/02 ,  H04W12/10 ,  H04W88/02

Abstract: Tokens/keys are produced for wireless communications. These tokens/keys are used for watermarks, signature insertion, encryption and other uses. In one embodiment, contextual information is used to generate tokens/keys. The tokens/keys may be derived directly from the contextual information. The contextual information may be used in conjunction with other information to derive the tokens/keys. Tokens/keys may be exchanged between transmit/receive units. The exchange of these tokens/keys may be encrypted.

Abstract translation: 产生用于无线通信的令牌/密钥。 这些令牌/密钥用于水印，签名插入，加密和其他用途。 在一个实施例中，使用上下文信息来生成令牌/密钥。 令牌/密钥可以直接从上下文信息导出。 上下文信息可以与其他信息一起使用以导出令牌/密钥。 令牌/密钥可以在发送/接收单元之间交换。 这些令牌/密钥的交换可以被加密。

公开(公告)号：US20050096026A1

公开(公告)日：2005-05-05

申请号：US10739496

申请日：2003-12-18

Applicant: Prabhakar Chitrapu ,  John Kaewell

Inventor： Prabhakar Chitrapu ,  John Kaewell

IPC: H04B20060101 ,  H04M1/00 ,  H04M1/725 ,  H04M3/00 ,  H04M3/436 ,  H04Q7/20 ,  H04Q7/32

CPC classification number: H04M3/436 ,  H04M1/72569 ,  H04M1/72572 ,  H04M3/4211 ,  H04M2203/4536 ,  H04M2242/14

Abstract: A method for adjusting the operating parameters of a wireless device for use in a wireless communication network begins by entering and storing situation settings. When a communication is received at the network for the wireless device, the presence of the wireless device is determined. The situation settings are applied based upon the presence of the wireless device. The wireless device is informed of the communication via the applied situation settings.

公开(公告)号：US5442694A

公开(公告)日：1995-08-15

申请号：US226678

申请日：1994-04-12

Applicant: Prabhakar Chitrapu ,  Zhibing Pan ,  Chet Juall ,  Andrew Dumont

Inventor： Prabhakar Chitrapu ,  Zhibing Pan ,  Chet Juall ,  Andrew Dumont

IPC: H04M1/82 ,  H04M19/04 ,  H04Q1/50 ,  H04M1/00

CPC classification number: H04M19/04 ,  H04M1/82 ,  H04Q1/50

Abstract: A technique for software ring tone detection is disclosed utilizing, in the preferred embodiment, a recursive algorithm. The technique provides flexibility in that a digital signal processor may be reprogrammed to detect ring tone frequencies and amplitudes present in numerous different countries.

Abstract translation: 在优选实施例中，公开了一种用于软件铃音检测的技术，该方法是递归算法。 该技术提供灵活性，因为数字信号处理器可以被重新编程以检测存在于许多不同国家的铃声频率和振幅。

公开(公告)号：US20070260958A1

公开(公告)日：2007-11-08

申请号：US11617013

申请日：2006-12-28

Applicant: Yingxue Li ,  Prabhakar Chitrapu

Inventor： Yingxue Li ,  Prabhakar Chitrapu

IPC: H03M13/29

CPC classification number: H04L1/0048 ,  H03M13/27 ,  H03M13/6362 ,  H04L1/005 ,  H04L1/0069 ,  H04L1/0071 ,  H04L1/06 ,  H04L5/0023 ,  H04L27/2626 ,  H04L27/2647

Abstract: A wireless communication method and system for performing bit-interleaved coded modulation and iterative decoding. The system includes a transmitter and a receiver. The transmitter encodes incoming bits to generate coded bits, punctures the coded bits in accordance with a predetermined puncturing pattern to generate surviving channel bits and stolen bits and interleaves the surviving bits into interleaved surviving bits. The interleaved surviving bits are mapped to channel symbols and the stolen bits are interleaved to generate interleaved stolen bits. At least one of a plurality of antennas is selected to transmit the channel symbols based on the value of the interleaved stolen bits. The receiver receives the transmitted channel symbols, estimates a posteriori probability for both the channel symbols and the stolen bits, and retrieves information of the stolen bits by determining the selected antenna used to transmit the channel symbols.

Abstract translation: 一种用于执行比特交织的编码调制和迭代解码的无线通信方法和系统。 该系统包括发射机和接收机。 发射机对输入比特进行编码以产生编码比特，根据预定的穿孔模式对编码比特进行打孔，以产生幸存的信道比特和被盗的比特，并将幸存的比特交织到交织的幸存比特中。 交织的存活比特被映射到信道符号，并且被窃取的比特被交织以产生交织的被盗的比特。 选择多个天线中的至少一个基于交织的被盗比特的值来发送信道符号。 接收机接收所发送的信道符号，估计信道符号和被盗的比特的后验概率，并且通过确定用于发送信道符号的所选择的天线来检索被盗的比特的信息。

公开(公告)号：US20070025366A1

公开(公告)日：2007-02-01

申请号：US11542842

申请日：2006-10-04

Applicant: Sharif Shahrier ,  Prabhakar Chitrapu

Inventor： Sharif Shahrier ,  Prabhakar Chitrapu

IPC: H04L12/56

CPC classification number: H04W36/0083 ,  C07C43/313 ,  C07C69/63 ,  C07D307/79 ,  H04L29/06 ,  H04L29/12009 ,  H04L29/1233 ,  H04L29/12367 ,  H04L29/12424 ,  H04L29/12462 ,  H04L45/26 ,  H04L61/25 ,  H04L61/2514 ,  H04L61/2535 ,  H04L61/255 ,  H04W8/04 ,  H04W8/082 ,  H04W8/26 ,  H04W40/36 ,  H04W80/04 ,  H04W84/105 ,  H04W88/005

Abstract: A system and method for supporting mobile Internet communication is provided which employs a plurality of Routers and a plurality of Mobile Nodes (MNs). Each Router has a unique communication address. Each MN is associated with a home Router. Each Router has an associated Mobile Node Location List identifying each MN for which the Router is the home Router and the communication address of a Router corresponding to a current location of each such MN. Each MN is movable from an old location where the MN communicates with the Internet via one Router to a current location where the MN communicates with the Internet via a different Router. Communication at the current location via the different Router is established by communicating to the MN's home Router the communication address of the different Router as the communication address corresponding to the MN's current location. Accordingly, a data communication from a corresponding node (CN) to a selected MN is communicated to the selected MN by accessing the Mobile Node Location List of the selected MN's home Router to determine the communication address corresponding to the selected MN's current location and directing the data communication to that determined communication address.

Abstract translation: 提供一种用于支持移动因特网通信的系统和方法，其采用多个路由器和多个移动节点（MN）。 每个路由器都有一个独特的通讯地址。 每个MN与归属路由器相关联。 每个路由器具有相关联的移动节点位置列表，其标识路由器是家庭路由器的每个MN，以及对应于每个这样的MN的当前位置的路由器的通信地址。 每个MN可以从MN通过一个路由器与因特网通信的旧位置移动到MN通过不同路由器与因特网通信的当前位置。 通过与MN的归属路由器通信，将不同路由器的通信地址作为与MN当前位置对应的通信地址进行通信，建立通过不同路由器在当前位置的通信。 因此，通过访问所选MN的归属路由器的移动节点位置列表来确定与所选择的MN的当前位置相对应的通信地址，并将所指示的MN的当前位置的通信地址指向 数据通信到确定的通信地址。

公开(公告)号：US20060274641A1

公开(公告)日：2006-12-07

申请号：US11394931

申请日：2006-03-31

Applicant: Donald Grieco ,  Sung-Hyuk Shin ,  Yingming Tsai ,  Guodong Zhang ,  Prabhakar Chitrapu ,  Alain Briancon ,  Paul Marinier ,  TieJun Shan ,  Yogendra Shah

Inventor： Donald Grieco ,  Sung-Hyuk Shin ,  Yingming Tsai ,  Guodong Zhang ,  Prabhakar Chitrapu ,  Alain Briancon ,  Paul Marinier ,  TieJun Shan ,  Yogendra Shah

IPC: H04J11/00

CPC classification number: H04L27/2003 ,  H04L27/2614

Abstract: In a wireless communication system comprising at least one wireless transmit/receive unit (WTRU), a base station, and a radio network controller (RNC), a method for constant envelope orthogonal frequency division multiplexing (CE-OFDM) modulation comprises the WTRU performing an inverse transform on the data. The WTRU next performs constant envelope (CE) modulation on the data and transmits the CE-OFDM data to the base station. The base station receives the data and CE demodulates the data. The base station performs a transform on the demodulated data.

Abstract translation: 在包括至少一个无线发射/接收单元（WTRU），基站和无线电网络控制器（RNC）的无线通信系统中，用于恒包络正交频分复用（CE-OFDM）调制的方法包括WTRU执行 对数据进行逆变换。 WTRU接下来对数据执行恒定包络（CE）调制，并将CE-OFDM数据发送到基站。 基站接收数据，CE解调数据。 基站对解调数据进行变换。

公开(公告)号：US20060258347A1

公开(公告)日：2006-11-16

申请号：US11482256

申请日：2006-07-07

Applicant: Prabhakar Chitrapu

Inventor： Prabhakar Chitrapu

IPC: H04Q7/20

CPC classification number: G01S5/0252 ,  G01S5/02 ,  G01S5/0294 ,  G01S5/14 ,  H04L67/04 ,  H04L67/16 ,  H04L67/18 ,  H04L69/329 ,  H04W16/18 ,  H04W28/26 ,  H04W48/16 ,  H04W48/20 ,  H04W64/00 ,  H04W76/10 ,  H04W88/02 ,  H04W88/08

Abstract: Classes of cognition models which may include: 1) Radio Environment models, 2) Mobility models and 3) Application/User Context models are utilized in a wireless communications network. Radio Environment models represent the physical aspects of the radio environment, such as shadowing losses, multi-path propagation, interference and noise levels, etc. Mobility models represent users motion, in terms of geo-coordinates and/or logical identifiers, such as street names etc. as well as speed of user terminal etc. The context model represents the present state and dynamics of each of these application processes within itself and between multiple application processes. These data are employed to optimize network performance.