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    • 5. 发明授权
    • Method and apparatus for determining coverage and switching between overlay communication systems
    • 用于确定覆盖通信系统之间的覆盖和切换的方法和装置
    • US07450943B2
    • 2008-11-11
    • US10366101
    • 2003-02-12
    • Peter J. BlackRamin RezaiifarThunyachate Ekvetchavit
    • Peter J. BlackRamin RezaiifarThunyachate Ekvetchavit
    • H04Q7/20
    • 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)。
    • 6. 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
    • US20090163209A1
    • 2009-06-25
    • US12249726
    • 2008-10-10
    • 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)。
    • 8. 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)。
    • 10. 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。