公开(公告)号：US08121296B2

公开(公告)日：2012-02-21

申请号：US09933972

申请日：2001-08-20

申请人： Philip Hawkes ,  Gregory G. Rose ,  Raymond T. Hsu ,  Ramin Rezaiifar

发明人： Philip Hawkes ,  Gregory G. Rose ,  Raymond T. Hsu ,  Ramin Rezaiifar

IPC分类号： H04L9/08 ,  H04L9/16 ,  H04N7/16

CPC分类号： H04L63/0428 ,  G06F21/606 ,  G06F2221/2107 ,  H04L9/0891 ,  H04L9/30 ,  H04L12/1877 ,  H04L12/189 ,  H04L29/06 ,  H04L29/06027 ,  H04L63/061 ,  H04L63/068 ,  H04L63/164 ,  H04L65/4076 ,  H04L65/607 ,  H04L65/608 ,  H04L67/04 ,  H04L67/14 ,  H04L67/22 ,  H04L69/04 ,  H04L69/16 ,  H04L69/161 ,  H04L69/164 ,  H04L69/22 ,  H04L69/32 ,  H04L2209/601 ,  H04L2209/80 ,  H04L2463/062 ,  H04L2463/101 ,  H04W12/02 ,  H04W12/04

摘要： Method and apparatus for secure transmissions. Each user is provided a registration key. A long-time updated broadcast key is encrypted using the registration key and provided periodically to a user. A short-time updated key is encrypted using the broadcast key and provided periodically to a user. Broadcasts are then encrypted using the short-time key, wherein the user decrypts the broadcast message using the short-time key.

摘要翻译： 用于安全传输的方法和装置。 每个用户都被提供一个注册密钥。 使用注册密钥对长时间更新的广播密钥进行加密并且向用户周期性地提供。 使用广播密钥对短时更新密钥进行加密，并向用户定期提供。 然后使用短时间密钥对广播进行加密，其中用户使用短时间密钥解密广播消息。

公开(公告)号：US08099075B2

公开(公告)日：2012-01-17

申请号：US11487240

申请日：2006-07-14

申请人： Ramin Rezaiifar ,  Parag Arun Agashe ,  Paul E. Bender

发明人： Ramin Rezaiifar ,  Parag Arun Agashe ,  Paul E. Bender

IPC分类号： H04M11/04 ,  H04W4/00 ,  G06F15/16

CPC分类号： H04L65/4007 ,  H04L29/06027 ,  H04L65/1069 ,  H04M2207/18 ,  H04M2242/04 ,  H04W4/90 ,  H04W8/18 ,  H04W8/26 ,  H04W76/10 ,  H04W76/50 ,  H04W80/00

摘要： Embodiments disclosed herein relate to providing session establishment for emergency VoIP (e.g., E911) calls.

摘要翻译： 本文公开的实施例涉及为紧急VoIP（例如，E911）呼叫提供会话建立。

公开(公告)号：US20120002574A1

公开(公告)日：2012-01-05

申请号：US13230555

申请日：2011-09-12

申请人： Chong U. Lee ,  Alejandro R. Holcman ,  Jeremy M. Stein ,  Ramin Rezaiifar ,  Babak Aryan

发明人： Chong U. Lee ,  Alejandro R. Holcman ,  Jeremy M. Stein ,  Ramin Rezaiifar ,  Babak Aryan

IPC分类号： H04W52/02 ,  H04W4/00

CPC分类号： H04W56/0015 ,  H04B7/24 ,  H04J3/06 ,  H04W52/028 ,  Y02D70/1222 ,  Y02D70/164 ,  Y02D70/448

摘要： Operating at least one low duty cycle (LDC) controller to maintain synchronization between the LDC controller and a plurality of LDC terminals operating over a communication network using only overhead channels of the network and conforming to the protocol and timing of said network, wherein synchronization between the LDC controller and the plurality of LDC terminals is maintained separately from the protocol and timing of the communication network, and enables the LDC controller to schedule power down and wake up of the plurality of LDC terminals for durations longer than allowable under the protocol and timing of the communication network.

摘要翻译： 操作至少一个低占空比（LDC）控制器，以维持LDC控制器与通过网络运行的多个LDC终端之间的同步，仅使用网络的开销信道并符合所述网络的协议和定时，其中， LDC控制器和多个LDC终端与通信网络的协议和定时分开地保持，并且使LDC控制器能够调度多个LDC终端的停电和唤醒持续时间长于协议和定时下允许的持续时间 的通信网络。

公开(公告)号：US08089940B2

公开(公告)日：2012-01-03

申请号：US09972530

申请日：2001-10-05

申请人： Ramin Rezaiifar ,  Yongbin Wei

发明人： Ramin Rezaiifar ,  Yongbin Wei

IPC分类号： H04B7/216

CPC分类号： H04L1/1829 ,  H04L1/16 ,  H04L1/1845 ,  H04L2001/125

摘要： A method and system provides for efficient data throughput by avoiding unnecessary data sub-packets transmission while not missing new data packets. The method and system distinguishes between a sub-packet for a current data packet and a sub-packet for a new data packet by assigning different codes to them. When a currently received sub-packet and a previously received sub-packet for a previously decoded data packet have equivalent codes, the remote station sends an acknowledgement signal to the base station, preventing unnecessary sub-packets transmission. When the currently received sub-packet and the previously received sub-packet have different codes, the remote station sends an acknowledgement signal, if the remote station can decode the new packet from the current sub-packet. Otherwise, the remote station sends a negative acknowledgement signal to the base station, and requests more sub-packs for the current packet if the limit on number of transmission for currently received sub-packet has not reached.

摘要翻译： 一种方法和系统通过避免不必要的数据子分组传输而不丢失新的数据分组来提供有效的数据吞吐量。 该方法和系统通过向它们分配不同的代码来区分用于当前数据分组的子分组和用于新数据分组的子分组。 当以前解码的数据分组的当前接收的子分组和先前接收的子分组具有等效代码时，远程站向基站发送确认信号，从而防止不必要的分组传输。 当当前接收到的子分组和先前接收到的分组具有不同的代码时，如果远程站可以从当前子分组解码新分组，则远程站发送确认信号。 否则，远程站向基站发送否定确认信号，并且如果当前接收的子分组的传输数量的限制尚未到达，则向当前分组请求更多子分组。

公开(公告)号：US07990998B2

公开(公告)日：2011-08-02

申请号：US11087187

申请日：2005-03-22

申请人： Rajat Prakash ,  Gavin Bernard Horn ,  Nikhil Jain ,  Ramin Rezaiifar

发明人： Rajat Prakash ,  Gavin Bernard Horn ,  Nikhil Jain ,  Ramin Rezaiifar

IPC分类号： H04L12/42

CPC分类号： H04L12/2898 ,  H04L63/0428 ,  H04L63/06 ,  H04L63/08 ,  H04L67/04 ,  H04L67/34 ,  H04L69/24 ,  H04W28/18 ,  H04W76/10

摘要： A user terminal establishes a session with a first access point (AP0) and obtains a token associated with modem configuration information used for radio communication. The user terminal thereafter establishes a connection with a second access point (AP1) by sending the token. AP1 receives the token, obtains the modem configuration information associated with the token, and initializes an air interface protocol stack with the modem configuration information to obtain a modem-specific protocol stack for the user terminal. AP1 sends a response indicating successful connection setup. The user terminal and AP1 thereafter communicate in accordance with the modem-specific protocol stack. AP1 may attempt to fetch the session for the user terminal from AP0. If this is successful, then AP1 updates the protocol stack with the session information to obtain a complete protocol stack for the user terminal. The user terminal and AP1 thereafter communicate with the complete protocol stack.

摘要翻译： 用户终端与第一接入点（AP0）建立会话，并且获得与用于无线电通信的调制解调器配置信息相关联的令牌。 用户终端随后通过发送令牌建立与第二接入点（AP1）的连接。 AP1接收令牌，获取与令牌相关联的调制解调器配置信息，并用调制解调器配置信息初始化空中接口协议栈，以获得用户终端的调制解调器专用协议栈。 AP1发送一个响应，指示连接建立成功。 用户终端和AP1此后根据调制解调器专用协议栈进行通信。 AP1可以尝试从AP0获取用户终端的会话。 如果这样成功，则AP1使用会话信息更新协议栈，以获得用户终端的完整协议栈。 用户终端和AP1此后与完整的协议栈进行通信。

公开(公告)号：US07848305B2

公开(公告)日：2010-12-07

申请号：US11282064

申请日：2005-11-16

申请人： Abhay Arvind Joshi ,  Ramin Rezaiifar ,  Simon Turner

发明人： Abhay Arvind Joshi ,  Ramin Rezaiifar ,  Simon Turner

IPC分类号： H04J3/00

CPC分类号： H04W88/06 ,  H04B1/707 ,  H04W74/00

摘要： To access a first communication system, a terminal determines a transmission time for an access probe, an expected response time from the system, and a protected time interval based on the transmission time and/or expected response time. The terminal determines a starting time for sending the access probe such that the protected time interval does not overlap a tune-away interval in which the terminal is to monitor anther frequency/air-interface. This starting time may be set initially to the end of a prior access probe plus a pseudo-random wait duration and may be advanced forward or moved backward in time, if needed, by a time duration selected such that the protected time interval does not overlap the tune-away interval.

摘要翻译： 为了访问第一通信系统，终端基于传输时间和/或预期响应时间确定接入探测器的传输时间，来自系统的预期响应时间和受保护时间间隔。 终端确定用于发送接入探针的开始时间，使得受保护的时间间隔不与终端监视其它频率/空中接口的调谐间隔重叠。 该开始时间可以初始设置为先前的接入探测加上伪随机等待持续时间的结束，并且如果需要，可以在时间上向前推进或向后移动所选择的持续时间，使得保护的时间间隔不重叠 调离间隔。

公开(公告)号：US20100215022A1

公开(公告)日：2010-08-26

申请号：US12776251

申请日：2010-05-07

申请人： Peter J. Black ,  Ramin Rezaiifar ,  Thunyachate Ekvetchavit

发明人： Peter J. Black ,  Ramin Rezaiifar ,  Thunyachate Ekvetchavit

IPC分类号： H04W36/00

CPC分类号： H04W36/30 ,  H04W36/14

摘要： Techniques to determine whether or not a terminal is under the coverage of a current wireless communication system (e.g., a packet data system) and to switch from the current system to another wireless communication system (e.g., a voice/data system). In one method, at least one measurement of at least one parameter for at least one base station in the current system is initially obtained. The measurement(s) may be SNR measurements. A metric is derived based on the measurement(s) and used (typically along with a metric threshold and a timer) to determine whether or not the terminal is within the coverage of the current system. A switch to another system is initiated if the terminal is deemed to be outside the coverage of the current system. The two systems provide at least one common service (e.g., packet data service).

摘要翻译： 确定终端是否处于当前无线通信系统（例如，分组数据系统）的覆盖范围内并且从当前系统切换到另一个无线通信系统（例如，语音/数据系统）的技术。 在一种方法中，首先获得当前系统中至少一个基站的至少一个参数的至少一个测量。 测量可以是SNR测量。 基于测量并使用（通常与度量阈值和定时器）来导出度量，以确定终端是否在当前系统的覆盖范围内。 如果终端被认为在当前系统的覆盖范围之外，则启动到另一个系统的切换。 两个系统提供至少一个公共服务（例如，分组数据服务）。

公开(公告)号：US20090290652A1

公开(公告)日：2009-11-26

申请号：US12466698

申请日：2009-05-15

申请人： Ramin Rezaiifar ,  Christopher G. Lott ,  Donna Ghosh ,  Peter J. Black ,  Rashid Ahmed A. Attar

发明人： Ramin Rezaiifar ,  Christopher G. Lott ,  Donna Ghosh ,  Peter J. Black ,  Rashid Ahmed A. Attar

IPC分类号： H04L27/28

CPC分类号： H04W36/18 ,  H04W16/02 ,  H04W36/04 ,  H04W36/30

摘要： In a wireless communication system where different frequency bands are deployed to generate various communication zones, pilot signal set management for a plurality of pilot signals generated from an additional coverage zone is based on identifying a preselected signal set from the plurality of pilot signals and determining whether a predetermined criterion is met.

摘要翻译： 在其中部署不同频带以产生各种通信区域的无线通信系统中，从附加覆盖区域生成的多个导频信号的导频信号集管理基于从多个导频信号中识别预选信号集，并确定是否 满足预定的标准。

公开(公告)号：US20090285158A1

公开(公告)日：2009-11-19

申请号：US12466090

申请日：2009-05-14

申请人： Ramin Rezaiifar ,  Peter J. Black

发明人： Ramin Rezaiifar ,  Peter J. Black

IPC分类号： H04W4/00

CPC分类号： H04W52/241 ,  H04W52/343

摘要： Techniques for dynamically varying coverage in a multi-carrier communication system are described. A sector may operate on multiple carriers. The sector may vary coverage on a given carrier k based on its load, so that less interference may be caused to other sectors when the sector load is light. In one design, the sector may communicate on a first carrier at a first transmit power level and on a second carrier at a second transmit power level equal to or lower than the first transmit power level. The sector may vary the second transmit power level based on its load to vary the coverage of the second carrier. The sector may reduce the second transmit power level to zero or a low level if the sector load is light. The sector may also vary the second transmit power level based on a function of sector load or a switching pattern.

摘要翻译： 描述了用于在多载波通信系统中动态变化覆盖的技术。 扇区可以在多个载波上操作。 该扇区可以基于其负载来改变给定载波k上的覆盖范围，使得当扇区负载较轻时可能对其它扇区造成更少的干扰。 在一种设计中，扇区可以在第一发射功率电平的第一载波和第二载波上以等于或低于第一发射功率电平的第二发射功率电平进行通信。 扇区可以基于其负载来改变第二发射功率电平，以改变第二载波的覆盖范围。 如果扇区负载较轻，扇区可将第二发射功率电平降低至零或低电平。 扇区还可以基于扇区负载或切换模式的功能来改变第二发射功率电平。

公开(公告)号：US20090219816A1

公开(公告)日：2009-09-03

申请号：US12393648

申请日：2009-02-26

申请人： Ramin Rezaiifar

发明人： Ramin Rezaiifar

IPC分类号： H04J1/16 ,  H04B7/00

CPC分类号： H04W74/0866 ,  H04W28/22 ,  H04W48/12

摘要： Techniques for managing the load of an access channel in a wireless communication system are described. In an aspect, the load of the access channel may be controlled by having each terminal regulates its use of the access channel (e.g., its rate of system access) based on a rate control algorithm (e.g., token bucket). The rate control algorithm may maintain information on past activities of a terminal and may regulate the use of the access channel by the terminal based on its past activities in order to control the access channel load and achieve fairness. The system may determine at least one parameter value for the rate control algorithm based on load conditions and may broadcast the at least one parameter value to terminals. Each terminal may regulate its use of the access channel based on the at least one parameter value received from the system.

摘要翻译： 描述用于管理无线通信系统中的接入信道的负载的技术。 在一方面，可以通过使每个终端基于速率控制算法（例如令牌桶）来调整其对接入信道的使用（例如，其系统接入速率）来控制接入信道的负载。 速率控制算法可以维护关于终端的过去活动的信息，并且可以基于其过去的活动来调节终端对接入信道的使用，以便控制接入信道负载并实现公平性。 系统可以基于负载条件确定速率控制算法的至少一个参数值，并且可以向终端广播至少一个参数值。 每个终端可以基于从系统接收的至少一个参数值来调节其对接入信道的使用。