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：US20080076478A1

公开(公告)日：2008-03-27

申请号：US11844631

申请日：2007-08-24

Applicant: Jeffrey Russell ,  Aliye Kaya ,  Prabhakar Chitrapu ,  Paul Russell

Inventor： Jeffrey Russell ,  Aliye Kaya ,  Prabhakar Chitrapu ,  Paul Russell

IPC: H04B1/38 ,  H04M1/02

CPC classification number: H04B1/18 ,  H04B1/40

Abstract: An antenna and radio frequency unit (ARFU) that is external to a wireless transmit/receive unit (WTRU) includes a radio frequency (RF) front end device and an antenna in communication with the RF front end device. The RF front end device is in communication with the WTRU.

Abstract translation: 在无线发射/接收单元（WTRU）外部的天线和射频单元（ARFU）包括射频（RF）前端设备和与RF前端设备通信的天线。 RF前端设备与WTRU通信。

公开(公告)号：US20070140494A1

公开(公告)日：2007-06-21

申请号：US11241429

申请日：2005-09-30

Applicant: Akinlolu Kumoluyi ,  Alexander Reznik ,  Guodong Zhang ,  Prabhakar Chitrapu ,  Sung-Hyuk Shin ,  Yingming Tsai

Inventor： Akinlolu Kumoluyi ,  Alexander Reznik ,  Guodong Zhang ,  Prabhakar Chitrapu ,  Sung-Hyuk Shin ,  Yingming Tsai

IPC: H04K1/00

CPC classification number: H04W12/08 ,  H04L9/088 ,  H04L63/04 ,  H04L63/105 ,  H04L63/1441 ,  H04L63/20 ,  H04L2209/80 ,  H04W12/04 ,  H04W12/12

Abstract: A system and method for providing variable security levels in a wireless communication network. The present invention optimizes the often conflicting demands of highly secure wireless communications and high speed wireless communications. According to a preferred embodiment of the present invention, various security sensors are scanned to determine the likely presence of an intruder within a predetermined trust zone. If an intruder is likely present, the security level is changed to the highest setting, and consequently a lower data rate, while the intruder is identified. If the identified intruder is in fact a trusted node, the security level is returned to a lower setting. If the identified intruder is not a trusted node, the security level is maintained at an elevated state while the intruder is within the trust zone.

Abstract translation: 一种用于在无线通信网络中提供可变安全级别的系统和方法。 本发明优化了高度安全的无线通信和高速无线通信的经常冲突的需求。 根据本发明的优选实施例，扫描各种安全传感器以确定入侵者在预定信任区域内的可能存在。 如果入侵者可能存在，则安全级别将更改为最高设置，从而更低的数据速率，同时入侵者被识别。 如果识别的入侵者实际上是可信节点，那么安全级别将返回到较低的设置。 如果识别的入侵者不是可信节点，则入侵者在信任区域内时，安全级别保持在升高的状态。

公开(公告)号：US20050226461A1

公开(公告)日：2005-10-13

申请号：US11077894

申请日：2005-03-11

Applicant: Steven Goldberg ,  Richard Herschaft ,  Alain Briancon ,  Prabhakar Chitrapu ,  Alan Carlton

Inventor： Steven Goldberg ,  Richard Herschaft ,  Alain Briancon ,  Prabhakar Chitrapu ,  Alan Carlton

IPC: G06K9/00 ,  H04B1/00

CPC classification number: G10L19/018 ,  G06T1/0021

Abstract: Signals encoded with watermark information are generated and broadcast into a protected area for capture by illicit recording devices along with their intended targets. An illicit recording in which at least a portion of the broadcast watermark signals are recorded is obtained and correlated with a known position of the broadcast watermark signals to yield the location of illicit recording devices. In an alternate embodiment, a surveillance device, being image and time synchronized with a signal broadcasting device, monitors and records the protected area. Illicit recordings containing the broadcast watermark are obtained and correlated with corresponding recordings taken by the surveillance device to identify the location of illicit recording devices. In an alternate embodiment, the surveillance device further monitors the quality of the broadcast watermark signals and adjusts them accordingly to achieve a desired quality level.

Abstract translation: 生成用水印信息编码的信号，并将其广播到被保护的区域，以供非法记录装置与其预期目标一起捕获。 获得其中记录了广播水印信号的至少一部分的非法记录，并与广播水印信号的已知位置相关联，以产生非法记录装置的位置。 在替代实施例中，与信号广播设备同时进行图像和时间同步的监视设备监视和记录保护区域。 获得包含广播水印的非法记录，并与监视设备拍摄的相应记录相关联，以识别非法记录设备的位置。 在替代实施例中，监视装置还监视广播水印信号的质量并相应地调整它们以实现期望的质量水平。

公开(公告)号：US20050201348A1

公开(公告)日：2005-09-15

申请号：US11127577

申请日：2005-05-12

Applicant: Prabhakar Chitrapu ,  Steven Goldberg

Inventor： Prabhakar Chitrapu ,  Steven Goldberg

IPC: H04L12/28 ,  H04L12/56 ,  H04W36/14 ,  H04W84/10 ,  H04W84/22 ,  H04W88/16 ,  H04W92/02 ,  H04Q11/00

CPC classification number: H04W36/24 ,  H04W36/04 ,  H04W36/14 ,  H04W84/10 ,  H04W84/22 ,  H04W88/16

Abstract: Method and apparatus for facilitating high level handoff decisions performed by a gateway device of a personal area network (PAN) which examines criteria regarding both the devices making up the PAN as well as the enterprise networks which are the subject of the potential handoff.

Abstract translation: 用于促进由个人区域网络（PAN）的网关设备执行的高级切换决策的方法和装置，其检查构成PAN的设备以及作为潜在切换对象的企业网络的标准。

公开(公告)号：US20050195769A1

公开(公告)日：2005-09-08

申请号：US11034987

申请日：2005-01-13

Applicant: John Kaewell ,  Prabhakar Chitrapu ,  Robert Olesen ,  Sung-Hyuk Shin ,  John Hoffmann ,  Alexander Reznik

Inventor： John Kaewell ,  Prabhakar Chitrapu ,  Robert Olesen ,  Sung-Hyuk Shin ,  John Hoffmann ,  Alexander Reznik

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 spread spectrum method and apparatus for protecting and authenticating wirelessly transmitted digital information using numerous techniques. The apparatus may be a wireless code division multiple access (CDMA) communication system, a base station, a wireless transmit/receive unit (WTRU), a transmitter, a receiver and/or an integrated circuit (IC). The wireless CDMA communication system includes a transmitter which steganographically embeds digital information in a CDMA communication signal and wirelessly transmits the CDMA communication signal. The system further includes a receiver which receives the CDMA communication signal and extracts the steganographically embedded digital information from the received CDMA 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扩频方法和装置。 该装置可以是无线码分多址（CDMA）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CDMA通信系统包括将数字信息隐写地嵌入在CDMA通信信号中并且无线地发送CDMA通信信号的发射机。 该系统还包括接收CDMA通信信号并从接收的CDMA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：US20050025135A1

公开(公告)日：2005-02-03

申请号：US10929132

申请日：2004-08-27

Applicant: Prabhakar Chitrapu

Inventor： Prabhakar Chitrapu

IPC: H04W88/18 ,  H04L12/28 ,  H04L29/06 ,  H04W4/06 ,  H04W8/00 ,  H04W8/22 ,  H04W12/00 ,  H04W28/06 ,  H04W92/18 ,  H04L12/66

CPC classification number: H04L63/104 ,  H04L63/20 ,  H04W4/06 ,  H04W8/22 ,  H04W12/0052 ,  H04W12/06 ,  H04W28/06 ,  H04W92/18

Abstract: A system for supporting security and mobility management of wireless communications to multiple wireless transmit/receive units (WTRUs) includes a first database having a listing of each of the WTRUs along with their capabilities, and a second database having a listing of the location of each of the WTRUs. The second database has at least one subgroup which corresponds to at least two WTRUs which are co-located. The WTRUs in the subgroup are treated as a single WTRU for security and mobility management.

Abstract translation: 用于支持对多个无线发射/接收单元（WTRU）的无线通信的安全性和移动性管理的系统包括具有每个WTRU的列表及其能力的第一数据库，以及具有每个 的WTRU。 第二数据库具有至少一个对应于至少两个共同定位的WTRU的子组。 子组中的WTRU被视为用于安全和移动性管理的单个WTRU。

公开(公告)号：US20060148516A1

公开(公告)日：2006-07-06

申请号：US11366114

申请日：2006-03-02

Applicant: Gautam Reddy ,  Prabhakar Chitrapu ,  Leonid Kazakevich ,  Teresa Hunkeler ,  Arty Chandra

Inventor： Gautam Reddy ,  Prabhakar Chitrapu ,  Leonid Kazakevich ,  Teresa Hunkeler ,  Arty Chandra

IPC: H04M1/00

CPC classification number: H04W88/04 ,  G01S5/0027 ,  H04W4/02 ,  H04W64/00 ,  H04W84/00 ,  H04W88/06

Abstract: A wireless network provides controlled wireless communications with multi-mode wireless WTRUs. The wireless network has at least one base station having a transceiver operating in an infrastructure communication mode with multi mode WTRUs and a controller that transmits control signals via infrastructure communications with a WTRU that control peer-to-peer mode communications of that WTRU with other WTRUs. A WTRU has transceiver components configured for selective operation in an infrastructure communication mode with a network base station and in a peer-to-peer communication mode with other WTRUs. The WTRU also has a transceiver controller configured to selectively control peer-to-peer mode communications with other WTRUs based on communication signals received in infrastructure communications with a network base station. Preferably, the transceiver controller is configured to control the transceiver components to switch between infrastructure communication mode and peer-to-peer communication mode based on Quality of Service criteria.

公开(公告)号：US20050286487A1

公开(公告)日：2005-12-29

申请号：US11019598

申请日：2004-12-22

Applicant: Prabhakar Chitrapu

Inventor： Prabhakar Chitrapu

IPC: H04L12/28 ,  H04L12/56

CPC classification number: H04L45/00 ,  H04L45/24

Abstract: A data flow is divided into multiple sub-flows. At least two of the sub-flows are routed through separate paths through one or multiple networks, and the sub-flows are received and combined to reconstruct an estimate of the original data flow. The separate paths may be result by placing different routing information in the headers of the packets of different sub-flows, by routing by a router the packets of each sub-flow differently, using different channels for the sub-flows or using different within channel paths, such as multipaths.

Abstract translation: 数据流分为多个子流。 至少两个子流通过单独的路径通过一个或多个网络路由，并且子流被接收和组合以重建原始数据流的估计。 单独的路径可以通过将不同路由信息放置在不同子流的分组的报头中，通过路由器路由每个子流的分组不同地使用用于子流的不同信道或使用不同的信道内的不同子流 路径，如多路径。

公开(公告)号：US20050220322A1

公开(公告)日：2005-10-06

申请号：US11032780

申请日：2005-01-11

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

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

IPC: H04L29/06 ,  H04M1/66 ,  H04M1/68 ,  H04W12/00 ,  H04W12/02 ,  H04W12/06 ,  H04W12/10

CPC classification number: H04L63/12 ,  H04L63/08 ,  H04L2463/101 ,  H04L2463/103 ,  H04W12/001 ,  H04W12/10

Abstract: At least one At least one user data stream is layer 2/3 processed, physical layer processed and radio frequency processed. A watermark/signature is embedded at at least one of layer 2/3, physical layer or radio frequency, producing an embedded wireless communication. The embedded wireless communication is wirelessly transferred. The embedded wireless communication is received and the watermark/signature is extracted from the embedded wireless communication.

Abstract translation: 至少一个至少一个用户数据流是第2/3层处理，物理层处理和射频处理。 水印/签名被嵌入在层2/3，物理层或射频中的至少一个上，产生嵌入式无线通信。 无线传输嵌入式无线通信。 接收嵌入式无线通信，并从嵌入式无线通信中提取水印/签名。