公开(公告)号：US20050180315A1

公开(公告)日：2005-08-18

申请号：US11035174

申请日：2005-01-13

Applicant: Prabhakar Chitrapu ,  John Kaewell ,  Robert Olesen ,  Sung-Hyuk Shin ,  John Hoffmann ,  Richard Herschaft

Inventor： Prabhakar Chitrapu ,  John Kaewell ,  Robert Olesen ,  Sung-Hyuk Shin ,  John Hoffmann ,  Richard Herschaft

IPC: H04B7/216 ,  H04B7/26 ,  H04J11/00 ,  H04L1/00 ,  H04L1/06 ,  H04L1/08 ,  H04L1/18 ,  H04W12/06

CPC classification number: H04B7/2628 ,  H04L1/0041 ,  H04L1/0061 ,  H04L1/0065 ,  H04L1/0606 ,  H04L1/0618 ,  H04L1/08 ,  H04L1/1812 ,  H04W12/06

Abstract: A method and apparatus for protecting and authenticating wirelessly transmitted digital information using numerous techniques. The apparatus may be a wireless orthogonal frequency division multiplexing (OFDM) communication system, a base station, a wireless transmit/receive unit (WTRU), a transmitter, a receiver and/or an integrated circuit (IC). The wireless OFDM communication system includes a transmitter which steganographically embeds digital information in an OFDM communication signal and wirelessly transmits the OFDM communication signal. The system further includes a receiver which receives the OFDM communication signal and extracts the steganographically embedded digital information from the received OFDM communication signal.

Abstract translation: 一种使用许多技术来保护和认证无线传输的数字信息的方法和装置。 该装置可以是无线正交频分复用（OFDM）通信系统，基站，无线发射/接收单元（WTRU），发射机，接收机和/或集成电路（IC）。 无线OFDM通信系统包括在OFDM通信信号中隐写地嵌入数字信息并无线发送OFDM通信信号的发射机。 该系统还包括接收OFDM通信信号并从接收的OFDM通信信号中提取隐写的嵌入式数字信息的接收机。

公开(公告)号：US20050002407A1

公开(公告)日：2005-01-06

申请号：US10837124

申请日：2004-04-30

Applicant: Kamel Shaheen ,  Prabhakar Chitrapu ,  Brian Kiernan ,  Debashish Purkayastha

Inventor： Kamel Shaheen ,  Prabhakar Chitrapu ,  Brian Kiernan ,  Debashish Purkayastha

IPC: H04L12/28 ,  H04L12/56 ,  H04L12/58 ,  H04L29/06 ,  H04W4/14 ,  H04W4/18 ,  H04W80/00 ,  H04W84/04 ,  H04W84/12 ,  H04W92/02 ,  H04L12/66

CPC classification number: H04L65/1069 ,  H04L51/066 ,  H04L51/38 ,  H04L61/2007 ,  H04L65/1006 ,  H04L69/08 ,  H04W4/14 ,  H04W4/18 ,  H04W8/04 ,  H04W36/08 ,  H04W80/00 ,  H04W84/04 ,  H04W84/12 ,  H04W88/16 ,  H04W92/02

Abstract: Method and apparatus delivering voice/data services within a piconet operating over a limited range or over a WLAN communicating with 3GPP devices by reformatting data into IP format before delivering to the WLAN. The service is short message service (SMS). Upon receipt of an SMS message, relevant routing information is retrieved. A PDGW address for the SMS message is identified and is sent to the PDGW address which identifies the WLAN user equipment (UE) for receiving the SMS and reformats the SMS message into IP format (text or encapsulation) for delivery to the UE. A protocol architecture is provided for SMS delivery over WLANs, in particular, for UMTS/CDMA based SMS over WLAN through two alternative mechanisms, i.e., SMS tunneling and SMS proxy, for protocols for the delivery of SMS across the WLAN. The invention enhances standard 802.11 in the context of UMTS and CDMA 2000; as well as other scenarios.

Abstract translation: 在有限范围内或通过与3GPP设备通信的WLAN之间传送语音/数据服务的方法和装置，在传送到WLAN之前将数据重新格式化为IP格式。 该服务是短消息服务（SMS）。 在接收到SMS消息时，检索相关路由信息。 识别用于SMS消息的PDGW地址，并将其发送到标识用于接收SMS的WLAN用户设备（UE）的PDGW地址，并将SMS消息重新格式化为用于传送给UE的IP格式（文本或封装）。 提供了用于通过WLAN进行SMS传送的协议架构，特别是针对用于通过WLAN传送SMS的协议的两种替代机制（即SMS隧道和SMS代理），通过WLAN为基于UMTS / CDMA的SMS。 本发明在UMTS和CDMA2000的上下文中增强标准802.11; 以及其他场景。

公开(公告)号：US5809110A

公开(公告)日：1998-09-15

申请号：US594411

申请日：1996-01-31

Applicant: Mark Ulrich ,  Prabhakar Chitrapu

Inventor： Mark Ulrich ,  Prabhakar Chitrapu

IPC: H04B3/46 ,  H04M3/22 ,  H04M11/06 ,  H04M1/24 ,  H04J1/16 ,  H04M11/00

CPC classification number: H04M3/22 ,  H04B3/46 ,  H04M11/06

Abstract: An improved system for minimizing toll charges is disclosed wherein line quality is measured and a call is terminated if the line quality is not at an acceptable level to allow for the highest possible bit rates during data transfer or to guarantee a certain minimum degree of quality.

Abstract translation: 公开了一种用于最小化费用费用的改进系统，其中线路质量被测量并且如果线路质量不在可接受的水平以允许数据传输期间的最高可能比特率或者保证一定的最低质量程度的话，终止呼叫。

公开(公告)号：US5687177A

公开(公告)日：1997-11-11

申请号：US729048

申请日：1996-10-10

Applicant: Prabhakar Chitrapu ,  Wei Lin

Inventor： Prabhakar Chitrapu ,  Wei Lin

IPC: H04M3/56 ,  H04M9/08 ,  H04Q1/457 ,  H04M1/00

CPC classification number: H04M3/56 ,  H04M3/568 ,  H04M9/08 ,  H04Q1/4575

Abstract: A tone blocking system and method for use preferably in conferencing systems in order to prevent control tones from being transmitted to other conferees is disclosed. The buffer length used to process the signal and detect tones is varied, being increased when a tone is suspected to allow for sophisticated tone detection algorithms, and being decreased when silence is present by trimming the silence away. The technique minimizes delay, and its degrading effect on echo, but nonetheless provides for a lengthy buffer required to do reliable tone detection. The invention is applicable to any signal other than tone as well.

Abstract translation: 公开了一种用于优选在会议系统中使用以防止控制音调被传送给其他与会者的音调阻塞系统和方法。 用于处理信号和检测音调的缓冲器长度是变化的，当怀疑音调允许复杂的音调检测算法时增加，并且当通过修剪静音而存在沉默时减小。 该技术最大限度地减少了延迟，并降低了对回声的影响，但仍然提供了执行可靠音调检测所需的冗长缓冲区。 本发明也适用于除音调以外的任何信号。

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。

公开(公告)号：US20070053325A1

公开(公告)日：2007-03-08

申请号：US11409668

申请日：2006-04-24

Applicant: Sung-Hyuk Shin ,  Yogendra Shah ,  Prabhakar Chitrapu ,  Alain Briancon

Inventor： Sung-Hyuk Shin ,  Yogendra Shah ,  Prabhakar Chitrapu ,  Alain Briancon

IPC: H04B7/216

CPC classification number: H04K1/00

Abstract: A method and apparatus for securing wireless communications are disclosed. A watermark message is encoded to watermark message symbols. A cover message is encoded to cover message symbols. The watermark message symbols are then overlaid onto the cover message symbols to generate a watermark-embedded cover message in a physical layer. The watermark message symbols have a substantially lower amplitude than the cover message symbols. Thus, the watermark message introduces small perturbation around the constellation points of the cover message symbols. The watermark message symbol may span or spread over a plurality of cover message symbols and may be encrypted with a secret key. The watermark message is used for improving receiver performance by transmitting additional information or for security enhancement purposes. The watermarking function may be selectively turned on and off.

Abstract translation: 公开了一种用于确保无线通信的方法和装置。 水印消息被编码为水印消息符号。 封面信息被编码以覆盖消息符号。 然后将水印消息符号覆盖到封面消息符号上，以在物理层中生成嵌入水印的封面消息。 水印消息符号具有比覆盖消息符号大得多的幅度。 因此，水印消息在覆盖消息符号的星座点周围引入小的扰动。 水印消息符号可以覆盖多个封面消息符号并且可以用秘密密钥加密。 水印消息用于通过发送附加信息或为了安全增强目的来改善接收机性能。 可以选择性地打开和关闭水印功能。

公开(公告)号：US20070036353A1

公开(公告)日：2007-02-15

申请号：US11444558

申请日：2006-05-31

Applicant: Alexander Reznik ,  Debashish Purkayastha ,  Steven Goldberg ,  Robert Olesen ,  Marian Rudolf ,  Inhyok Cha ,  Alan Carlton ,  Yogendra Shah ,  Shamim Rahman ,  Rajat Mukherjee ,  Robert DiFazio ,  Gregory Sternberg ,  Leonid Kazakevich ,  Kazimierz Siwiak ,  Guodong Zhang ,  Tanbir Haque ,  Louis Guccione ,  Prabhakar Chitrapu ,  Akinlolu Kumoluyi ,  Alain Briancon

Inventor： Alexander Reznik ,  Debashish Purkayastha ,  Steven Goldberg ,  Robert Olesen ,  Marian Rudolf ,  Inhyok Cha ,  Alan Carlton ,  Yogendra Shah ,  Shamim Rahman ,  Rajat Mukherjee ,  Robert DiFazio ,  Gregory Sternberg ,  Leonid Kazakevich ,  Kazimierz Siwiak ,  Guodong Zhang ,  Tanbir Haque ,  Louis Guccione ,  Prabhakar Chitrapu ,  Akinlolu Kumoluyi ,  Alain Briancon

IPC: H04L9/30

CPC classification number: H04B7/0434 ,  H04B7/0695 ,  H04L9/0631 ,  H04L9/0656 ,  H04L9/0875 ,  H04L9/3271 ,  H04L63/0428 ,  H04L63/061 ,  H04L63/08 ,  H04L63/1441 ,  H04L63/1466 ,  H04L63/18 ,  H04L2209/34 ,  H04L2209/80 ,  H04W12/00503 ,  H04W12/00508 ,  H04W12/02 ,  H04W12/04 ,  H04W12/06 ,  H04W92/10

Abstract: The present invention relates to secret key generation and authentication methods that are based on joint randomness not shared by others (JRNSO), in which unique channel response between two communication terminals generates a secret key. Multiple network access points use a unique physical location of a receiving station to increase user data security. High data rate communication data is encrypted by generating a random key and a pseudo-random bit stream. A configurable interleaving is achieved by introduction of JRNSO bits to an encoder used for error-correction codes. Databases of user data are also protected by JRNSO-based key mechanisms. Additional random qualities are induced on the joint channel using MIMO eigen-beamforming, antenna array deflection, polarization selection, pattern deformation, and path selection by beamforming or time correlation. Gesturing induces randomness according to uniquely random patterns of a human user's arm movements inflected to the user device.

Abstract translation: 本发明涉及基于其他人不共享的联合随机性（JRNSO）的秘密密钥生成和认证方法，其中两个通信终端之间的唯一信道响应产生密钥。 多个网络接入点使用接收站的唯一物理位置来增加用户数据的安全性。 通过生成随机密钥和伪随机比特流来加密高数据速率通信数据。 通过将JRNSO位引入用于纠错码的编码器来实现可配置的交错。 用户数据的数据库也受到基于JRNSO的关键机制的保护。 使用MIMO本征波束形成，天线阵列偏转，偏振选择，图案变形以及通过波束形成或时间相关的路径选择在联合信道上引起附加随机质量。 手势根据用户装置的人体手臂运动的唯一随机模式引起随机性。

公开(公告)号：US20060199579A1

公开(公告)日：2006-09-07

申请号：US11416873

申请日：2006-05-03

Applicant: Prabhakar Chitrapu

Inventor： Prabhakar Chitrapu

IPC: H04Q7/20

CPC classification number: H04W40/02 ,  H04L12/6402 ,  H04L69/16 ,  H04L69/161 ,  H04L69/167 ,  H04L69/22

Abstract: Internet protocol version 6 (IPv6) is substantially utilized throughout the entire cellular network and employs routing headers of the packets to ensure that the packets are routed via the gateway router (GR) to the end destination which is accomplished by a user equipment (UE) specifying the IP address of the gateway router as the IP address of an intermediate router in the routing header. Packets may also be routed to UEs from the GR through an intermediate router.

Abstract translation: 互联网协议版本6（IPv6）在整个蜂窝网络中基本上被利用，并采用分组的路由头，以确保分组经由网关路由器（GR）被路由到由用户设备（UE）完成的终点， 指定网关路由器的IP地址作为路由头中的中间路由器的IP地址。 报文也可以通过中间路由器从GR路由到UE。