公开(公告)号：US08175014B2

公开(公告)日：2012-05-08

申请号：US12538348

申请日：2009-08-10

申请人： Stephen E. Terry ,  Prabhakar R. Chitrapu ,  Mohammed Sammour

发明人： Stephen E. Terry ,  Prabhakar R. Chitrapu ,  Mohammed Sammour

IPC分类号： H04L12/56 ,  H04J1/16

CPC分类号： H04W88/04 ,  H04L1/1812 ,  H04L2001/0097

摘要： Methods and apparatus are described for performing automatic repeat request (ARQ) and hybrid-ARQ (HARQ) assisted ARQ procedures in a relay-based wireless communication system. Triggers for radio link control (RLC)/ARQ retransmissions and RLC/ARQ status reporting are also described.

摘要翻译： 描述了用于在基于中继的无线通信系统中执行自动重复请求（ARQ）和混合ARQ（HARQ）辅助ARQ过程的方法和装置。 还描述了用于无线链路控制（RLC）/ ARQ重传和RLC / ARQ状态报告的触发器。

公开(公告)号：US20110252241A1

公开(公告)日：2011-10-13

申请号：US13167267

申请日：2011-06-23

申请人： Guodong Zhang ,  Prabhakar R. Chitrapu

发明人： Guodong Zhang ,  Prabhakar R. Chitrapu

IPC分类号： H04L9/32

CPC分类号： H04L63/126 ,  H04L63/162 ,  H04W28/06 ,  H04W80/00

摘要： A method for reducing overhead when transmitting and receiving an Internet Protocol (IP) packet by a device begins with receiving of the IP packet by the device. In the packet, an IP address of the packet has been removed and replaced with a watermarking signature based on the IP address. The IP address is obtained using the watermarking signature. The IP address is attached to the packet and the packet is forwarded by the device to a destination over a network using the IP address.

摘要翻译： 当设备发送和接收互联网协议（IP）分组时，减少开销的方法开始于设备接收到IP分组。 在数据包中，数据包的IP地址已被删除，并根据IP地址替换为水印签名。 使用水印签名获得IP地址。 IP地址附加到数据包，数据包由设备通过网络通过IP地址转发到目的地。

公开(公告)号：US08036325B2

公开(公告)日：2011-10-11

申请号：US11531515

申请日：2006-09-13

申请人： Prabhakar R. Chitrapu ,  Steven Jeffrey Goldberg

发明人： Prabhakar R. Chitrapu ,  Steven Jeffrey Goldberg

IPC分类号： H03D1/04 ,  H03D1/06 ,  H03K5/01 ,  H03K6/04 ,  H04B1/10 ,  H04L1/00 ,  H04L25/08

CPC分类号： H03D3/006

摘要： A method and apparatus for cancelling interference in received signals are disclosed. A receiver includes a knowledge-based interference cancellation unit, a blind interference cancellation unit and a trade-off management unit. The knowledge-based interference cancellation unit cancels interference in the received signals based on pre-known knowledge and the blind interference cancellation unit cancels interference in the received signals without the pre-known knowledge. The trade-off management unit determines a trade-off between knowledge-based interference cancellation and blind interference cancellation, whereby at least one of the knowledge-based interference cancellation and the blind interference cancellation is selectively preformed based on the trade-off. The interference cancellation may be performed by implementing at least one of a successive interference cancellation (SIC), a principal component analysis (PCA) and an independent component analysis (ICA). The knowledge-based and the blind interference cancellation may be performed in parallel, in series or in any combination.

摘要翻译： 公开了一种消除接收信号干扰的方法和装置。 接收机包括基于知识的干扰消除单元，盲目干扰消除单元和权衡管理单元。 基于知识的干扰消除单元基于已知知识消除所接收的信号中的干扰，并且盲干扰消除单元在没有预先知道的情况下取消接收到的信号中的干扰。 权衡管理单元确定基于知识的干扰消除和盲目干扰消除之间的权衡，由此基于权衡来选择性地执行基于知识的干扰消除和盲干扰消除中的至少一个。 可以通过实施连续干扰消除（SIC），主成分分析（PCA）和独立分量分析（ICA）中的至少一个来执行干扰消除。 基于知识和盲目干扰消除可以并行地，串联地或以任何组合执行。

公开(公告)号：US07987369B2

公开(公告)日：2011-07-26

申请号：US11114286

申请日：2005-04-26

申请人： Guodong Zhang ,  Prabhakar R. Chitrapu

发明人： Guodong Zhang ,  Prabhakar R. Chitrapu

IPC分类号： H04L9/32

CPC分类号： H04L63/126 ,  H04L63/162 ,  H04W28/06 ,  H04W80/00

摘要： A method for reducing overhead when transmitting an Internet Protocol (IP) packet begins by selecting a watermarking signature based on the IP address of the packet. The watermarking signature is applied to the packet and the IP address is removed from the packet. The packet is sent to a receiver, which looks up the IP address of the packet by using the watermarking signature. The watermarking signature can be a radio frequency watermarking signature or a digital watermarking signature. A similar method employing watermarking can be used to reduce medium access control header overhead.

摘要翻译： 当通过基于分组的IP地址选择水印签名开始发送因特网协议（IP）分组时减少开销的方法。 将水印签名应用于分组，并从分组中移除IP地址。 该分组被发送到接收机，其通过使用水印签名来查找分组的IP地址。 水印签名可以是射频水印签名或数字水印签名。 使用水印的类似方法可以用于减少媒体访问控制头的开销。

公开(公告)号：US20110161673A1

公开(公告)日：2011-06-30

申请号：US13043095

申请日：2011-03-08

申请人： Sung-Hyuk Shin ,  Alexander Reznik ,  Guodong Zhang ,  Prabhakar R. Chitrapu

发明人： Sung-Hyuk Shin ,  Alexander Reznik ,  Guodong Zhang ,  Prabhakar R. Chitrapu

IPC分类号： H04L9/32

CPC分类号： H04L63/123 ,  G10L19/018 ,  H04L63/0428 ,  H04L63/0838 ,  H04L63/16 ,  H04W12/02 ,  H04W12/10

摘要： The present invention is related to a method and apparatus for enhancing security of communications. The apparatus comprises a security processing unit, a data processing unit, a cross-layer watermarking unit, and optionally a smart antenna processor. The security processing unit generates a token/key to be used in watermarking and sends a node security policy to other components. The data processing unit generates user data. The cross-layer watermarking unit includes at least one of Layer-2/3, Layer-1 and Layer-0. Each layer performs a different scheme or degree of watermarking. The cross-layer watermarking unit embeds the token/key into the user data transmission on at least one of the layers selectively in accordance with a security policy.

摘要翻译： 本发明涉及一种增强通信安全性的方法和装置。 该装置包括安全处理单元，数据处理单元，跨层水印单元以及任选的智能天线处理器。 安全处理单元生成要在水印中使用的令牌/密钥，并向其他组件发送节点安全策略。 数据处理单元生成用户数据。 跨层水印单元包括层2/3，层1和层0中的至少一个。 每个层执行不同的方案或水印程度。 跨层水印单元根据安全策略选择性地将令牌/密钥嵌入到至少一个层上的用户数据传输中。

公开(公告)号：US20100122085A1

公开(公告)日：2010-05-13

申请号：US12645377

申请日：2009-12-22

申请人： Akinlolu Oloruntosi Kumoluyi ,  Alexander Reznik ,  Guodong Zhang ,  Prabhakar R. Chitrapu ,  Sung-Hyuk Shin ,  Yingming Tsai

发明人： Akinlolu Oloruntosi Kumoluyi ,  Alexander Reznik ,  Guodong Zhang ,  Prabhakar R. Chitrapu ,  Sung-Hyuk Shin ,  Yingming Tsai

IPC分类号： G06F21/20 ,  H04L29/06 ,  H04L9/00

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

摘要： 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.

摘要翻译： 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：US07657288B2

公开(公告)日：2010-02-02

申请号：US11315452

申请日：2005-12-22

申请人： Prabhakar R. Chitrapu ,  Steven Jeffrey Goldberg

发明人： Prabhakar R. Chitrapu ,  Steven Jeffrey Goldberg

IPC分类号： H04Q7/20 ,  H04M1/00 ,  H04B7/00

CPC分类号： H04W16/28 ,  H01Q1/246 ,  H01Q3/2605 ,  H04W36/00 ,  H04W36/32 ,  H04W64/00 ,  H04W88/08

摘要： The present invention relates to a method and system using dynamic beam forming for wireless communication signals in a wireless network. Base stations and/or UEs are provided with antenna systems having a range of beam forming selections. Relative base station and UE locations are one type of criteria used to make beam forming decisions.

摘要翻译： 本发明涉及一种在无线网络中使用无线通信信号的动态波束形成的方法和系统。 基站和/或UE设置有具有波束形成选择范围的天线系统。 相对基站和UE位置是用于进行波束形成决策的一种类型的标准。

公开(公告)号：US07386009B2

公开(公告)日：2008-06-10

申请号：US10446535

申请日：2003-05-28

申请人： Gautam G. Reddy ,  Prabhakar R. Chitrapu

发明人： Gautam G. Reddy ,  Prabhakar R. Chitrapu

IPC分类号： H04J3/16 ,  H04L12/56 ,  H04Q7/20

CPC分类号： H04W88/184 ,  H04L29/06 ,  H04L51/066 ,  H04L51/38 ,  H04L69/08 ,  H04W4/14

摘要： In one aspect of the invention signal/control messages are embedded as packets in the payloads of SMS messages. The SMS messages are transmitted in a cellular network employing SMPP protocol. SMS messages intended to traverse an TCP/IP network are introduced to the TCP/IP network employing ICMP protocol. The protocol conversions are performed by a message center (MC), such as a SMS center or an SGSN in a cellular network or a WLAN Access Router when the SMS message is forwarded to a WLAN. The SMS messages are typically created by a mobile user, which is also capable of receiving the SMS messages having a signal/control message in the SMS message payload.

摘要翻译： 在本发明的一个方面，信号/控制消息作为分组嵌入在SMS消息的有效载荷中。 SMS消息在采用SMPP协议的蜂窝网络中传输。 用于穿越TCP / IP网络的SMS消息被引入到采用ICMP协议的TCP / IP网络中。 当SMS消息转发到WLAN时，协议转换由诸如SMS中心或蜂窝网络中的SGSN或WLAN接入路由器之类的消息中心（MC）执行。 SMS消息通常由移动用户创建，移动用户也能够在SMS消息有效载荷中接收具有信号/控制消息的SMS消息。

公开(公告)号：US20070211836A1

公开(公告)日：2007-09-13

申请号：US11531515

申请日：2006-09-13

申请人： Prabhakar R. Chitrapu ,  Steven Jeffrey Goldberg

发明人： Prabhakar R. Chitrapu ,  Steven Jeffrey Goldberg

IPC分类号： H03D1/04

CPC分类号： H03D3/006

摘要： A method and apparatus for cancelling interference in received signals are disclosed. A receiver includes a knowledge-based interference cancellation unit, a blind interference cancellation unit and a trade-off management unit. The knowledge-based interference cancellation unit cancels interference in the received signals based on pre-known knowledge and the blind interference cancellation unit cancels interference in the received signals without the pre-known knowledge. The trade-off management unit determines a trade-off between knowledge-based interference cancellation and blind interference cancellation, whereby at least one of the knowledge-based interference cancellation and the blind interference cancellation is selectively preformed based on the trade-off. The interference cancellation may be performed by implementing at least one of a successive interference cancellation (SIC), a principal component analysis (PCA) and an independent component analysis (ICA). The knowledge-based and the blind interference cancellation may be performed in parallel, in series or in any combination.

摘要翻译： 公开了一种消除接收信号干扰的方法和装置。 接收机包括基于知识的干扰消除单元，盲目干扰消除单元和权衡管理单元。 基于知识的干扰消除单元基于已知知识消除所接收的信号中的干扰，并且盲干扰消除单元在没有预先知道的情况下取消接收到的信号中的干扰。 权衡管理单元确定基于知识的干扰消除和盲目干扰消除之间的折衷，由此基于权衡来选择性地执行基于知识的干扰消除和盲目干扰消除中的至少一个。 可以通过实施连续干扰消除（SIC），主成分分析（PCA）和独立分量分析（ICA）中的至少一个来执行干扰消除。 基于知识和盲目干扰消除可以并行地，串联地或以任何组合执行。

公开(公告)号：US07076246B2

公开(公告)日：2006-07-11

申请号：US10791231

申请日：2004-03-02

申请人： Prabhakar R. Chitrapu

发明人： Prabhakar R. Chitrapu

IPC分类号： H04Q7/20

CPC分类号： 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

摘要： 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.