公开(公告)号：US20050261028A1

公开(公告)日：2005-11-24

申请号：US10902357

申请日：2004-07-29

Applicant: Prabhakar Chitrapu

Inventor： Prabhakar Chitrapu

IPC: H04B7/04 ,  H04B7/185 ,  H04W16/28

CPC classification number: H04W16/28 ,  H04B7/0408

Abstract: A smart antenna is disclosed for generating nested beams. The antenna is configured to generate a cover beam and a center beam. The cover beam has a wide coverage area and the center beam, which is nested within the cover beam, has a narrow coverage area. Both the cover beam and the center beam may be independently steerable or steered jointly as if coupled together. The cover beam is preferably used for system-wide purposes, such as multicasting, broadcasting, paging, tracking, and physical measurements. The center beam is preferably used for exchanging data between a transmitter and receiver. However, the cover beam and the center beam may also be used for transmission of data and signaling traffic respectively.

Abstract translation: 公开了一种用于产生嵌套光束的智能天线。 天线被配置为产生覆盖光束和中心光束。 覆盖光束具有宽的覆盖区域，并且嵌套在覆盖光束内的中心光束具有窄的覆盖区域。 覆盖梁和中心梁都可以独立地引导或转向，如同联结在一起。 覆盖波束优选用于全系统的目的，例如多播，广播，寻呼，跟踪和物理测量。 中心波束优选用于在发射机和接收机之间交换数据。 然而，覆盖波束和中心波束也可以分别用于数据和信令业务的传输。

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：US09295089B2

公开(公告)日：2016-03-22

申请号：US13820724

申请日：2011-09-06

Applicant: Prabhakar Chitrapu ,  Kushanava Laha ,  John Tomici ,  John Cartmell ,  Kenneth Lynch ,  Alexander Reznik ,  Oscar Lopez-Torres ,  Chunxuan Ye ,  Dale Seed ,  Michelle Perras

Inventor： Prabhakar Chitrapu ,  Kushanava Laha ,  John Tomici ,  John Cartmell ,  Kenneth Lynch ,  Alexander Reznik ,  Oscar Lopez-Torres ,  Chunxuan Ye ,  Dale Seed ,  Michelle Perras

IPC: H04W36/08 ,  H04W76/02 ,  H04W72/12 ,  H04W28/08 ,  H04W88/06 ,  H04W36/28 ,  H04W88/16 ,  H04W48/18 ,  H04L29/06 ,  H04W24/10 ,  H04W36/00 ,  H04W36/14 ,  H04W72/00

CPC classification number: H04W76/025 ,  H04L69/08 ,  H04W24/10 ,  H04W28/08 ,  H04W36/0027 ,  H04W36/08 ,  H04W36/14 ,  H04W36/28 ,  H04W48/18 ,  H04W72/00 ,  H04W72/12 ,  H04W76/12 ,  H04W76/15 ,  H04W84/12 ,  H04W88/06 ,  H04W88/16

Abstract: Systems, apparatuses and methods for bandwidth management, aggregation and internet protocol (“IP”) flow mobility (“IFOM”) across multiple-access technologies are provided. Included is a method that includes selecting, from a packet data network (“PDN”) connection formed through a plurality of access systems communicatively coupled with a wireless transmit and/or receive unit (“WTRU”), an access system over which to transport a flow of internet protocol (“IP”) traffic to and/or from the WTRU. The method may also include sending, to the WTRU, a request to associate the flow of IP traffic with the selected access system.

Abstract translation: 提供了跨多个接入技术的带宽管理，聚合和互联网协议（“IP”）流动移动性（“IFOM”）的系统，设备和方法。 包括的方法包括从通过与无线发射和/或接收单元（“WTRU”）通信耦合的多个接入系统形成的分组数据网络（“PDN”）连接， 互联网协议（“IP”）流向和/或来自WTRU的流量。 该方法还可以包括向WTRU发送将IP业务流与所选择的接入系统相关联的请求。

公开(公告)号：US20140161055A1

公开(公告)日：2014-06-12

申请号：US13820724

申请日：2011-09-06

Applicant: Prabhakar Chitrapu ,  Kushanava Laha ,  John Tomici ,  John Cartmell ,  Kenneth Lynch ,  Alexander Reznik ,  Oscar Lopez-Torres ,  Chunxuan Ye ,  Dale Seed ,  Michelle Perras

Inventor： Prabhakar Chitrapu ,  Kushanava Laha ,  John Tomici ,  John Cartmell ,  Kenneth Lynch ,  Alexander Reznik ,  Oscar Lopez-Torres ,  Chunxuan Ye ,  Dale Seed ,  Michelle Perras

IPC: H04W76/02

CPC classification number: H04W76/025 ,  H04L69/08 ,  H04W24/10 ,  H04W28/08 ,  H04W36/0027 ,  H04W36/08 ,  H04W36/14 ,  H04W36/28 ,  H04W48/18 ,  H04W72/00 ,  H04W72/12 ,  H04W76/12 ,  H04W76/15 ,  H04W84/12 ,  H04W88/06 ,  H04W88/16

Abstract: Systems, apparatuses and methods for bandwidth management, aggregation and internet protocol (“IP”) flow mobility (“IFOM”) across multiple-access technologies are provided. Included is a method that includes selecting, from a packet data network (“PDN”) connection formed through a plurality of access systems communicatively coupled with a wireless transmit and/or receive unit (“WTRU”), an access system over which to transport a flow of internet protocol (“IP”) traffic to and/or from the WTRU. The method may also include sending, to the WTRU, a request to associate the flow of IP traffic with the selected access system.

Abstract translation: 提供了跨多个接入技术的带宽管理，聚合和互联网协议（“IP”）流动移动性（“IFOM”）的系统，设备和方法。 包括的方法包括从通过与无线发射和/或接收单元（“WTRU”）通信耦合的多个接入系统形成的分组数据网络（“PDN”）连接， 互联网协议（“IP”）流向和/或来自WTRU的流量。 该方法还可以包括向WTRU发送将IP业务流与所选择的接入系统相关联的请求。

公开(公告)号：US20070177729A1

公开(公告)日：2007-08-02

申请号：US11339958

申请日：2006-01-26

Applicant: Alexander Reznik ,  Akinlolu Kumoluyi ,  Guodong Zhang ,  Prabhakar Chitrapu ,  Gregory Sternberg ,  Yogendra Shah ,  Alain Charles Briancon ,  Chunxuan Ye

Inventor： Alexander Reznik ,  Akinlolu Kumoluyi ,  Guodong Zhang ,  Prabhakar Chitrapu ,  Gregory Sternberg ,  Yogendra Shah ,  Alain Charles Briancon ,  Chunxuan Ye

IPC: H04L9/00

CPC classification number: H04K1/00 ,  H04L9/0858 ,  H04L9/0875 ,  H04L9/12 ,  H04L25/0202 ,  H04L25/0224 ,  H04L2209/80 ,  H04W12/04

Abstract: A method and apparatus is used for generating a perfectly random secret key between two or more transceivers in a wireless communication network. In a point-to-point system, both transceivers produce an estimate of the channel impulse response (CIR) based on the received radio signal. The CIR estimation is synchronized and may include error correction and detection. A long secret key of bits is generated from a digitized version of the CIR estimate, from which a perfectly secret encryption key is derived by privacy amplification.

Abstract translation: 一种方法和装置用于在无线通信网络中的两个或多个收发器之间生成完全随机的秘密密钥。 在点对点系统中，两个收发器基于所接收的无线电信号产生信道脉冲响应（CIR）的估计。 CIR估计是同步的，并且可以包括纠错和检测。 从CIR估计的数字化版本产生比特的长秘密密钥，通过隐私放大从其中导出完全秘密的加密密钥。