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    • 1. 发明申请
    • Methods and Apparatus for Flexible Forward-Link and Reverse-Link Handoffs
    • 灵活的前向链路和反向链路切换的方法和装置
    • US20080009292A1
    • 2008-01-10
    • US11856648
    • 2007-09-17
    • David JulianAvneesh AgrawalArak SutivongEdward Teague
    • David JulianAvneesh AgrawalArak SutivongEdward Teague
    • H04Q7/20
    • H04W36/06
    • The disclosed embodiments provide for methods and systems for selecting sectors for handoff in a communication system. According to one aspect, the method includes monitoring an indicia of transmit power on a plurality of RL control channels directed to a plurality of sectors, and selecting one of the sectors as a candidate for a RL handoff. The disclosed embodiments also provide for methods and systems for indicating a selected serving sector for handoff in a communication system. According to one aspect, the method includes sending a first signal to a first sector to indicate the first sector as a serving sector for a forward-link handoff, and sending a second signal to a second sector to indicate the second sector as a serving sector for a reverse-link handoff.
    • 所公开的实施例提供了用于在通信系统中选择用于切换的扇区的方法和系统。 根据一个方面,所述方法包括:监视指向多个扇区的多个RL控制信道上的发射功率的标记,以及选择所述扇区之一作为RL切换的候选。 所公开的实施例还提供了用于在通信系统中指示用于切换的所选择的服务扇区的方法和系统。 根据一个方面,所述方法包括向第一扇区发送第一信号以将第一扇区指示为用于前向链路切换的服务扇区,以及向第二扇区发送第二信号以将第二扇区指示为服务扇区 用于反向链路切换。
    • 2. 发明申请
    • Robust erasure detection and erasure-rate-based closed loop power control
    • 强大的擦除检测和基于擦除率的闭环功率控制
    • US20050283715A1
    • 2005-12-22
    • US10890717
    • 2004-07-13
    • Arak SutivongAvneesh AgrawalDavid Julian
    • Arak SutivongAvneesh AgrawalDavid Julian
    • H04B7/005H04L1/00H04L1/20H03M13/03
    • H04L1/0045H04L1/0057H04L1/20H04W52/125H04W52/20
    • Techniques for performing erasure detection and power control for a transmission without error detection coding are described. For erasure detection, a transmitter transmits codewords via a wireless channel. A receiver computes a metric for each received codeword, compares the computed metric against an erasure threshold, and declares the received codeword to be “erased” or “non-erased”. The receiver dynamically adjusts the erasure threshold based on received known codewords to achieve a target level of performance. For power control, an inner loop adjusts the transmit power to maintain a received signal quality (SNR) at a target SNR. An outer loop adjusts the target SNR based on the status of received codewords (erased or non-erased) to achieve a target erasure rate. A third loop adjusts the erasure threshold based on the status of received known codewords (“good”, “bad”, or erased) to achieve a target conditional error rate.
    • 描述了用于对没有错误检测编码的传输进行擦除检测和功率控制的技术。 为了擦除检测,发射机经由无线信道发送码字。 接收机计算每个接收到的码字的度量,将所计算的度量与擦除阈值进行比较,并且将所接收的码字声明为“擦除”或“未擦除”。 接收机基于接收到的已知码字来动态地调整擦除阈值,以实现目标性能水平。 对于功率控制,内部环路调整发射功率以将接收信号质量(SNR)保持在目标SNR。 外部环路基于接收到的码字(擦除或未擦除)的状态来调整目标SNR以实现目标擦除率。 第三循环基于接收的已知码字的状态(“好”,“坏”或被擦除)来调整擦除阈值,以实现目标条件错误率。
    • 3. 发明申请
    • ROBUST ERASURE DETECTION AND ERASURE-RATE-BASED CLOSED LOOP POWER CONTROL
    • 强大的检测和基于漏电率的封闭环路功率控制
    • US20070150799A1
    • 2007-06-28
    • US11676563
    • 2007-02-20
    • Arak SutivongAvneesh AgrawalDavid Julian
    • Arak SutivongAvneesh AgrawalDavid Julian
    • H03M13/03
    • H04L1/0045H04L1/0057H04L1/20H04W52/125H04W52/20
    • Techniques for performing erasure detection and power control for a transmission without error detection coding are described. For erasure detection, a transmitter transmits codewords via a wireless channel. A receiver computes a metric for each received codeword, compares the computed metric against an erasure threshold, and declares the received codeword to be “erased” or “non-erased”. The receiver dynamically adjusts the erasure threshold based on received known codewords to achieve a target level of performance. For power control, an inner loop adjusts the transmit power to maintain a received signal quality (SNR) at a target SNR. An outer loop adjusts the target SNR based on the status of received codewords (erased or non-erased) to achieve a target erasure rate. A third loop adjusts the erasure threshold based on the status of received known codewords (“good”, “bad”, or erased) to achieve a target conditional error rate.
    • 描述了用于对没有错误检测编码的传输进行擦除检测和功率控制的技术。 为了擦除检测,发射机经由无线信道发送码字。 接收机计算每个接收到的码字的度量,将所计算的度量与擦除阈值进行比较,并将接收的码字声明为“擦除”或“未擦除”。 接收机基于接收到的已知码字来动态地调整擦除阈值,以实现目标性能水平。 对于功率控制,内部环路调整发射功率以将接收信号质量(SNR)保持在目标SNR。 外部环路基于接收到的码字(擦除或未擦除)的状态来调整目标SNR以实现目标擦除率。 第三循环基于接收的已知码字的状态(“好”,“坏”或被擦除)来调整擦除阈值,以实现目标条件错误率。
    • 4. 发明申请
    • Methods and apparatus for flexible forward-link and reverse-link handoffs
    • 灵活的前向链路和反向链路切换的方法和装置
    • US20060135162A1
    • 2006-06-22
    • US11020716
    • 2004-12-22
    • David JulianAvneesh AgrawalArak SutivongEdward Teague
    • David JulianAvneesh AgrawalArak SutivongEdward Teague
    • H04Q7/20
    • H04W36/06
    • The disclosed embodiments provide for methods and systems for selecting sectors for handoff in a communication system. According to one aspect, the method includes monitoring an indicia of transmit power on a plurality of RL control channels directed to a plurality of sectors, and selecting one of the sectors as a candidate for a RL handoff. The disclosed embodiments also provide for methods and systems for indicating a selected serving sector for handoff in a communication system. According to one aspect, the method includes sending a first signal to a first sector to indicate the first sector as a serving sector for a forward-link handoff, and sending a second signal to a second sector to indicate the second sector as a serving sector for a reverse-link handoff.
    • 所公开的实施例提供了用于在通信系统中选择用于切换的扇区的方法和系统。 根据一个方面,所述方法包括:监视指向多个扇区的多个RL控制信道上的发射功率的标记,以及选择所述扇区之一作为用于RL切换的候选。 所公开的实施例还提供了用于在通信系统中指示用于切换的所选择的服务扇区的方法和系统。 根据一个方面,所述方法包括向第一扇区发送第一信号以将第一扇区指示为用于前向链路切换的服务扇区,以及向第二扇区发送第二信号以将第二扇区指示为服务扇区 用于反向链路切换。
    • 8. 发明申请
    • OFDMA reverse link scheduling
    • OFDMA反向链路调度
    • US20060293076A1
    • 2006-12-28
    • US11452722
    • 2006-06-13
    • David JulianArak Sutivong
    • David JulianArak Sutivong
    • H04B7/00H04Q7/20
    • H04W52/223H04L5/0007H04L5/0053H04L5/023H04W52/146H04W52/16H04W52/241H04W52/247H04W72/0473H04W72/12H04W72/1231H04W72/1268
    • Systems and methodologies are described that facilitate scheduling via a power control algorithm that dynamically update a scheduling metric (e.g., adjusting transmission power for sub-carriers) based on a prediction function and/or inference model of expected power requirements. In one aspect, the power prediction component can include two further components, namely: the data channel component and the control channel component—wherein a carrier to interference ratio (C/I) information is being transmitted on such control channel and the power is adjusted to obtain performance requirements. Accordingly, an efficient scheduling of users on a reverse link in an orthogonal manner can be provided, to optimally use system resources, while simultaneously: maintaining a predetermined and/or arbitrary fairness metrics, maintaining quality of service and maximizing throughput.
    • 描述了通过基于预期功率需求的预测函数和/或推理模型的动态地更新调度度量(例如,调整子载波的发射功率)的功率控制算法来促进调度的系统和方法。 在一个方面,功率预测组件可以包括两个另外的组件,即:数据信道分量和控制信道分量,其中载波干扰比(C / I)信息正在这种控制信道上传输,并且功率被调整 获得性能要求。 因此,可以提供以正交方式在反向链路上的用户的有效调度,以最佳地利用系统资源,同时:维持预定和/或任意的公平度量,维持服务质量和最大化吞吐量。
    • 9. 发明申请
    • Open-loop power adjustment for CQI repointing based on RL quality indicators
    • 基于RL质量指标的CQI重新定向的开环功率调整
    • US20070077956A1
    • 2007-04-05
    • US11507715
    • 2006-08-21
    • David JulianArak Sutivong
    • David JulianArak Sutivong
    • H04B7/00
    • H04W52/36H04W52/14H04W52/146H04W52/16H04W52/246H04W52/267H04W52/325H04W52/40
    • Systems and methodologies are described that facilitate performing scalable transmission power offsets for an access terminal to ensure that a listening base station can hear a signal transmitted from the access terminal. The power offset is generated as a function of a reverse link channel quality indicator feedback loop to permit the access terminal to adjust transmission power sufficiently without excessive power boosting, such as can occur under a static power-boosting scheme. Monitored parameters associated with channel quality indications may comprise erasure rate indicators provided by base stations in response to CQI signals from the access terminal, as well as mean received power levels associated with superframe preamble received at the access terminal.
    • 描述了便于对接入终端执行可扩展发射功率偏移的系统和方法,以确保监听基站能够听到从接入终端发送的信号。 产生功率偏移作为反向链路信道质量指示符反馈回路的函数,以允许接入终端充分调整发射功率,而不需要过多的功率提升,例如在静态功率增强方案下可能发生的功率偏移。 与信道质量指示相关联的监视参数可以包括响应于来自接入终端的CQI信号的基站提供的擦除率指示符以及与在接入终端处接收的超帧前缀相关联的平均接收功率电平。