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    • 71. 发明授权
    • Connection setup using flexible protocol configuration
    • 连接设置使用灵活的协议配置
    • US07990998B2
    • 2011-08-02
    • US11087187
    • 2005-03-22
    • Rajat PrakashGavin Bernard HornNikhil JainRamin Rezaiifar
    • Rajat PrakashGavin Bernard HornNikhil JainRamin Rezaiifar
    • H04L12/42
    • H04L12/2898H04L63/0428H04L63/06H04L63/08H04L67/04H04L67/34H04L69/24H04W28/18H04W76/10
    • 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.
    • 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。
    • 72. 发明授权
    • Techniques for accessing a wireless communication system with tune-away capability
    • 用于访问具有调离功能的无线通信系统的技术
    • US07848305B2
    • 2010-12-07
    • US11282064
    • 2005-11-16
    • Abhay Arvind JoshiRamin RezaiifarSimon Turner
    • Abhay Arvind JoshiRamin RezaiifarSimon Turner
    • H04J3/00
    • H04W88/06H04B1/707H04W74/00
    • 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.
    • 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。
    • 73. 发明申请
    • Method and Apparatus for Determining Coverage and Switching Between Overlay Communication Systems
    • 确定叠加通信系统覆盖和切换的方法和装置
    • US20100215022A1
    • 2010-08-26
    • US12776251
    • 2010-05-07
    • Peter J. BlackRamin RezaiifarThunyachate Ekvetchavit
    • Peter J. BlackRamin RezaiifarThunyachate Ekvetchavit
    • H04W36/00
    • H04W36/30H04W36/14
    • 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).
    • 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)。
    • 76. 发明申请
    • DYNAMIC COVERAGE ADJUSTMENT IN A MULTI-CARRIER COMMUNICATION SYSTEM
    • 多载波通信系统中的动态覆盖调整
    • US20090285158A1
    • 2009-11-19
    • US12466090
    • 2009-05-14
    • Ramin RezaiifarPeter J. Black
    • Ramin RezaiifarPeter J. Black
    • H04W4/00
    • H04W52/241H04W52/343
    • 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.
    • 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。
    • 78. 发明申请
    • ACCESS CHANNEL LOAD MANAGEMENT IN A WIRELESS COMMUNICATION SYSTEM
    • 无线通信系统中的通道信道负载管理
    • US20090219816A1
    • 2009-09-03
    • US12393648
    • 2009-02-26
    • Ramin Rezaiifar
    • Ramin Rezaiifar
    • H04J1/16H04B7/00
    • H04W74/0866H04W28/22H04W48/12
    • 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.
    • 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。
    • 80. 发明授权
    • Method and apparatus for a reverse link supplemental channel scheduling
    • 用于反向链路补充信道调度的方法和装置
    • US07254397B2
    • 2007-08-07
    • US10864658
    • 2004-06-08
    • Edward G. Tiedemann, Jr.Sai Yiu Duncan HoJun WangRagulan SinnarajahRamin Rezaiifar
    • Edward G. Tiedemann, Jr.Sai Yiu Duncan HoJun WangRagulan SinnarajahRamin Rezaiifar
    • H04Q7/20H04Q7/38
    • H04W72/121H04W4/08H04W72/005H04W72/1289
    • An apparatus and method for communications of scheduling information of reverse link transmissions are disclosed. A base station controller determines scheduling of a reverse link supplemental channel transmission for a mobile station in a communication system (100). The base station controller groups the mobile station in a group of mobile stations and assigns a forward link channel assignment channel to the group of mobile stations. A transceiver (400) incorporates information relating to the determined scheduling in the assigned forward link common assignment channel and transmits the assigned forward link common assignment channel to the mobile station for scheduling the reverse link supplemental channel transmission. The mobile station receives the assigned forward link common assignment channel. The mobile station schedules transmission of the reverse link supplemental channel transmission in accordance with the determined scheduling and transmits the reverse link supplemental channel in accordance with the determined scheduling.
    • 公开了用于反向链路传输的调度信息的通信的装置和方法。 基站控制器确定通信系统(100)中针对移动台的反向链路补充信道传输的调度。 基站控制器将移动站组合在一组移动站中,并向移动站组分配前向链路信道分配信道。 收发器(400)将与所分配的前向链路公共分配信道中的所确定的调度相关的信息合并,并将所分配的前向链路公共分配信道发送到移动站,以调度反向链路补充信道传输。 移动台接收分配的前向链路公共分配信道。 移动台根据确定的调度来调度反向链路补充信道传输的传输,并根据所确定的调度发送反向链路补充信道。