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    • 1. 发明申请
    • AUTONOMOUS TIMING ADVANCE ADJUSTMENT DURING HANDOVER
    • 自动定时提前进行调整
    • US20080084849A1
    • 2008-04-10
    • US11867414
    • 2007-10-04
    • Jin WangStephen TerryArty ChandraAllan TsaiDonald Grieco
    • Jin WangStephen TerryArty ChandraAllan TsaiDonald Grieco
    • H04Q7/00
    • H04W36/08H04W56/0045
    • A method and apparatus for uplink synchronization during handover are disclosed. A wireless transmit/receive unit (WTRU) measures a downlink receipt timing difference between a source Node-B and a target Node-B. The WTRU calculates a target Node-B timing advance value based on the downlink receipt timing difference, a source Node-B timing advance value, and a relative downlink transmit timing difference between the target Node-B and the source Node-B. The WTRU then applies the target Node-B timing advance value in transmission to the target Node-B. The source Node-B may calculate the relative downlink transmit timing difference between the target Node-B and the source Node-B, and send it to the WTRU. The source Node-B may provide the source Node-B timing advance value more frequently during handover. The WTRU may measure the downlink receipt timing difference by averaging multiple first significant paths (FSPs) over a certain time window.
    • 公开了一种在切换期间上行链路同步的方法和装置。 无线发射/接收单元(WTRU)测量源节点B和目标节点B之间的下行接收定时差。 WTRU基于目标节点B和源节点B之间的下行接收定时差,源节点B定时提前值和相对下行链路传输定时差来计算目标节点B定时提前值。 然后,WTRU将传输中的目标节点B定时提前值应用于目标节点B。 源节点B可以计算目标节点B和源节点B之间的相对下行链路传输定时差,并将其发送到WTRU。 源节点B可以在切换期间更频繁地提供源节点B定时提前值。 WTRU可以通过在特定时间窗口上平均多个第一有效路径(FSP)来测量下行链路接收定时差异。
    • 2. 发明授权
    • Efficient frame tracking in mobile receivers
    • 移动接收机中高效的帧跟踪
    • US08738054B2
    • 2014-05-27
    • US12577431
    • 2009-10-12
    • Aykut BultanJohn W. HaimDonald Grieco
    • Aykut BultanJohn W. HaimDonald Grieco
    • H04B15/00
    • H04B1/7117H04B1/7073H04B1/70754H04B1/708H04B1/7095H04B2201/70701
    • A method for determining the validity of a most significant path in a wireless communication system wherein data is transmitted in frame units in a multipath environment begins by accumulating a correlated data sequence N times, each time at a frame offset apart from the previous time. A preliminary noise estimate (PNE) is calculated as an average of the accumulated data values. A preliminary noise threshold (PNT) is calculated according to the equation C1×PNE. A final noise estimate (FNE) is calculated as the average of accumulated data values below the PNT. A final noise threshold (FNT) is calculated according to the equation C2×FNE. The validity of the most significant path is determined if the most significant path value is greater than the FNT.
    • 用于确定无线通信系统中最重要路径的有效性的方法,其中以多路径环境中的帧为单位传输数据的开始是通过累积相关数据序列N次,每次与之前的时间相隔一帧偏移。 初步噪声估计(PNE)被计算为累积数据值的平均值。 根据等式C1×PNE计算初步噪声阈值(PNT)。 最终噪声估计(FNE)被计算为低于PNT的累积数据值的平均值。 根据等式C2×FNE计算最终噪声阈值(FNT)。 如果最显着的路径值大于FNT,则确定最重要路径的有效性。
    • 4. 发明授权
    • Power control for combined dynamically and persistently scheduled PUSCH in E-UTRA
    • 用于在E-UTRA中组合动态和持续调度的PUSCH的功率控制
    • US08260341B2
    • 2012-09-04
    • US12261235
    • 2008-10-30
    • Sung-Hyuk ShinDonald Grieco
    • Sung-Hyuk ShinDonald Grieco
    • H04W52/04
    • H04W52/325H04W52/146H04W52/221H04W52/54
    • A power control scheme for an enhanced Universal Mobile Telecommunications System (UMTS) Terrestrial Radio Access (E-UTRA) physical uplink shared channel (PUSCH) is disclosed. In a first embodiment, when an uplink grant is configured for accumulation commands, the wireless transmit/receive unit (WTRU) combines the accumulation commands received in both the scheduling grant and the transmit power control physical downlink control channel. In a second embodiment, when an uplink grant is configured for absolute commands, the WTRU resets the accumulation control function immediately after receiving each absolute transmit power control command and then combines the absolute power control with the accumulation power control.
    • 公开了一种用于增强型通用移动电信系统(UMTS)陆地无线电接入(E-UTRA)物理上行链路共享信道(PUSCH)的功率控制方案。 在第一实施例中,当上行链路授权被配置用于累加命令时,无线发射/接收单元(WTRU)组合在调度许可和发射功率控制物理下行链路控制信道两者中接收的累加命令。 在第二实施例中,当为绝对命令配置上行链路许可时,WTRU在接收每个绝对发射功率控制命令之后立即重置累积控制功能,然后将绝对功率控制与积累功率控制组合。
    • 6. 发明申请
    • POWER CONTROL FOR COMBINED DYNAMICALLY AND PERSISTENTLY SCHEDULED PUSCH IN E-UTRA
    • 在E-UTRA中组合动态和持续调度的PUSCH的功率控制
    • US20090117931A1
    • 2009-05-07
    • US12261235
    • 2008-10-30
    • Sung-Hyuk ShinDonald Grieco
    • Sung-Hyuk ShinDonald Grieco
    • H04B7/00
    • H04W52/325H04W52/146H04W52/221H04W52/54
    • A power control scheme for an enhanced Universal Mobile Telecommunications System (UMTS) Terrestrial Radio Access (E-UTRA) physical uplink shared channel (PUSCH) is disclosed. In a first embodiment, when an uplink grant is configured for accumulation commands, the wireless transmit/receive unit (WTRU) combines the accumulation commands received in both the scheduling grant and the transmit power control physical downlink control channel. In a second embodiment, when an uplink grant is configured for absolute commands, the WTRU resets the accumulation control function immediately after receiving each absolute transmit power control command and then combines the absolute power control with the accumulation power control.
    • 公开了一种用于增强型通用移动电信系统(UMTS)陆地无线电接入(E-UTRA)物理上行链路共享信道(PUSCH)的功率控制方案。 在第一实施例中,当上行链路授权被配置用于累加命令时,无线发射/接收单元(WTRU)组合在调度许可和发射功率控制物理下行链路控制信道两者中接收的累加命令。 在第二实施例中,当为绝对命令配置上行链路许可时,WTRU在接收每个绝对发射功率控制命令之后立即重置累积控制功能,然后将绝对功率控制与积累功率控制组合。
    • 7. 发明申请
    • Method and apparatus for deriving a combined transmit power control command during handover
    • 用于在切换期间导出组合的发射功率控制命令的方法和装置
    • US20070026885A1
    • 2007-02-01
    • US11234629
    • 2005-09-23
    • Chang-Soo KooDonald GriecoJaeyoung Kwak
    • Chang-Soo KooDonald GriecoJaeyoung Kwak
    • H04B7/00
    • H04W52/40H04W52/146
    • A method and apparatus for deriving a combined transmit power control (TPC) command during handover are disclosed. During handover, a combined TPC command is generated from two or more TPC commands. The combined TPC command is set to −1 for decrease of the transmit power if a soft symbol of the TPC signal from any cell indicates decrease of the transmit power and the signal-to-interference ratio for the cell is greater than a reliability threshold. Otherwise, the combined TPC command is set to −1 if the function γ is not greater than the combining threshold, and set to +1 if the function γ is greater than the combining threshold, where the function γ represents a log-likelihood ratio of a probability density function of the combined TPC command.
    • 公开了一种用于在切换期间导出组合发射功率控制(TPC)命令的方法和装置。 在切换期间,从两个或多个TPC命令生成组合的TPC命令。 如果来自任何小区的TPC信号的软符号表示发射功率的降低,并且小区的信号干扰比大于可靠性阈值,则组合的TPC命令被设置为-1以降低发射功率。 否则,如果函数gamma不大于组合阈值,则将组合的TPC命令设置为-1,如果函数gamma大于组合阈值,则将其设置为+1,其中函数gamma表示对数似然比 组合TPC命令的概率密度函数。
    • 10. 发明申请
    • Efficient frame tracking in mobile receivers
    • 移动接收机中高效的帧跟踪
    • US20050070318A1
    • 2005-03-31
    • US10733952
    • 2003-12-10
    • Aykut BultanJohn HaimDonald Grieco
    • Aykut BultanJohn HaimDonald Grieco
    • H04B7/26H04B7/005
    • H04B1/7117H04B1/7073H04B1/70754H04B1/708H04B1/7095H04B2201/70701
    • A method for frame synchronization of a receiver in a wireless communication system wherein data is transmitted in frame units in a multipath environment begins by extracting data samples for a predetermined window size. A training sequence corresponding to a given cell parameter is generated. The data is correlated with the training sequence over different lags to locate the position of the first significant path, which defines the beginning of the frame. The correlated data is accumulated N times for each lag position to produce at least one accumulation vector. A most significant path value and position is determined that is the largest value among the accumulation vectors. A frame synchronization correction value is calculated based on the difference between the first significant path position and a constant called frame offset. The frame synchronization is adjusted based upon the frame synchronization correction value.
    • 一种在无线通信系统中的接收机的帧同步方法,其中数据在多路径环境中以帧为单位发送,通过提取预定窗口大小的数据样本开始。 产生与给定单元参数对应的训练序列。 数据与不同延迟的训练序列相关,以定位第一个有效路径的位置,其定义了帧的开始。 相关数据对于每个滞后位置累积N次以产生至少一个累加向量。 确定最重要的路径值和位置是累加向量中最大的值。 基于第一有效路径位置和称为帧偏移的常数之间的差来计算帧同步校正值。 基于帧同步校正值来调整帧同步。