公开(公告)号：US07047020B2

公开(公告)日：2006-05-16

申请号：US10705798

申请日：2003-11-10

Applicant: Douglas A. Gerecht

Inventor： Douglas A. Gerecht

IPC: H04Q7/20

CPC classification number: G01S19/06 ,  G01S5/0278 ,  H04W64/00

Abstract: This disclosure is directed to techniques for generating position assistance information that can be used by a subscriber unit of a wireless communication system. In accordance with this disclosure, a position determination entity (PDE), e.g., which may be coupled to one or more of the base stations, implements techniques that can improve the position assistance information, and therefore improve the ability of the subscriber unit to quickly and accurately identify its location using the positioning satellites. In particular, the PDE receives information from the subscriber unit indicative of signals detected by the subscriber unit in the wireless communication system, and then divides an area where the subscriber unit is suspected to be into a plurality of sectors. The PDE scores the sectors based on the information received from the subscriber unit, wherein a score for a respective sector indicates a likelihood that the subscriber is in the respective sector.

Abstract translation: 本公开涉及用于产生可由无线通信系统的用户单元使用的位置辅助信息的技术。 根据本公开，例如，可以耦合到一个或多个基站的位置确定实体（PDE）实现可以改善位置辅助信息的技术，并且因此提高用户单元的能力 并使用定位卫星准确识别其位置。 特别地，PDE从用户单元接收指示在无线通信系统中由用户单元检测到的信号的信息，然后将用户单元怀疑的区域划分为多个扇区。 PDE基于从用户单元接收的信息对扇区进行评分，其中相应扇区的得分表示用户在相应扇区中的可能性。

公开(公告)号：US07046726B2

公开(公告)日：2006-05-16

申请号：US10199159

申请日：2002-07-18

Applicant: Srikant Jayaraman ,  Ivan Jesus Fernandez Corbaton ,  John E. Smee

Inventor： Srikant Jayaraman ,  Ivan Jesus Fernandez Corbaton ,  John E. Smee

IPC: H04L27/38

CPC classification number: H04L25/03267 ,  H04L25/03057 ,  H04L2025/03496

Abstract: A method and apparatus for a decision feedback equalizer wherein a correction term is used to compensate for slicer errors, thus avoiding error propagation. Filter coefficients for the equalizer are selected so as to minimize a cost function for the equalizer. The cost function calculation includes a correction term. The correction term is a function of the energy of the filter coefficients. In one embodiment, the cost function includes a Mean Squared Error (MSE) calculation. The equalizer includes a coefficient generator responsive to the correction term. The correction term may depend on the Signal-to-Interference-and-Noise Ratio (SINR) at the output of the equalizer.

Abstract translation: 一种用于判决反馈均衡器的方法和装置，其中校正项用于补偿限幅器误差，从而避免错误传播。 选择用于均衡器的滤波器系数，以便使均衡器的成本函数最小化。 成本函数计算包括校正项。 校正项是滤波器系数的能量的函数。 在一个实施例中，成本函数包括均方误差（MSE）计算。 均衡器包括响应于校正项的系数发生器。 校正项可以取决于均衡器的输出端的信号与干扰与噪声比（SINR）。

公开(公告)号：US07046701B2

公开(公告)日：2006-05-16

申请号：US09973249

申请日：2001-10-09

Applicant: Mohammad J. Mohseni ,  Brian K. Butler ,  Deepu John ,  Haitao Zhang

Inventor： Mohammad J. Mohseni ,  Brian K. Butler ,  Deepu John ,  Haitao Zhang

IPC: H04J3/02

CPC classification number: H04J3/047 ,  H04L7/0008 ,  H04L7/0029 ,  H04L7/02

Abstract: A composite signal has two components, each carrying a stream of information that may be digital. In one application of a method according to an embodiment of the invention, at least one of the components is delayed such that a time relation between the streams of information is altered. The components are transferred via a common signal path such that upon transfer, the original time relation between the streams of information may be restored.

公开(公告)号：US07035657B2

公开(公告)日：2006-04-25

申请号：US10142369

申请日：2002-05-08

Applicant: An Mei Chen ,  Eric C. Rosen

Inventor： An Mei Chen ,  Eric C. Rosen

IPC: H04B7/00

CPC classification number: H04W88/182 ,  H04L12/1836 ,  H04L12/189 ,  H04W4/06 ,  H04W4/08

Abstract: A method and apparatus for delivering media to a group of target communication devices provides for multicasting media to the group of target communication devices to save network resources. The disclosed embodiments provide for a significant reduction in network traffic and media processing time by transmitting media in multicast transport mode, where a single copy of the media destined for a group of target recipients is transmitted to a wireless infrastructure over the multicast path. The wireless infrastructure replicates and transmits one copy of the media to each of the target recipients that are assigned to dedicated channels, but multicasts one copy of the media to the target recipients that are assigned to a shared channel.

公开(公告)号：US07035343B2

公开(公告)日：2006-04-25

申请号：US10061877

申请日：2002-01-31

Applicant: Richard Chi ,  Jittra Jootar ,  Parvathanathan Subrahmanya

Inventor： Richard Chi ,  Jittra Jootar ,  Parvathanathan Subrahmanya

IPC: H04L5/12

CPC classification number: H04L1/0054 ,  H04B7/0634 ,  H04B7/0654 ,  H04L1/0055 ,  H04L1/06

Abstract: A trellis decoder determines the most likely transmitted phase in response to previously requested phase adjustments and observed transmitted symbols. Maximum a posteriori (MAP) decoding also may be used. Alternatively, the identified likely transmitted phase is used for data demodulation. This and related features have the benefit of decreasing the effect of phase discrepancies introduced by erroneous reception of phase adjustment information, resulting in improved error rates, and a corresponding increase in system capacity, data throughput, or both.

Abstract translation: 网格解码器响应于先前请求的相位调整和观察到的发送符号来确定最可能的传输阶段。 也可以使用最大后验（MAP）解码。 或者，所识别的可能发射的相位用于数据解调。 这个和相关的特征具有减少由相位调整信息的错误接收引起的相位差异的影响的优点，导致改进的误码率，以及系统容量，数据吞吐量或两者的相应增加。

公开(公告)号：US07031678B2

公开(公告)日：2006-04-18

申请号：US10620896

申请日：2003-07-15

Applicant: Gary J. Ballantyne

Inventor： Gary J. Ballantyne

IPC: H04B1/04

CPC classification number: H04B7/0689 ,  H04B1/405

Abstract: This disclosure is directed to techniques for voice and data transmission from a wireless communication device, such as mobile telephone handset. In accordance with the disclosure, a wireless communication provides a hybrid coupler that permits voice and data calls to be combined for transmission over a common air interface. When increased transmit power is required, the wireless communication device prioritizes the voice call over the data call. In this case, the voice call is sent over both the voice output branch and the data output branch, taking advantage of the power amplifier in each output branch chain to achieve a greater overall transmit power for the voice transmission. In this manner, the mobile subscriber unit independently and simultaneously handles data and voice calls under ordinary circumstances, but drops the data call and combines the voice and data output branches for voice transmission when increased transmit power is required for the voice transmission.

Abstract translation: 本公开涉及用于来自诸如移动电话手持机的无线通信设备的语音和数据传输的技术。 根据本公开，无线通信提供混合耦合器，其允许组合语音和数据呼叫以在公共空中接口上传输。 当需要增加发射功率时，无线通信设备通过数据呼叫来优先处理语音呼叫。 在这种情况下，语音呼叫通过语音输出分支和数据输出分支发送，利用每个输出分支链中的功率放大器来实现用于语音传输的更大的总发射功率。 以这种方式，移动用户单元在通常情况下独立地并且同时处理数据和语音呼叫，但是当语音传输需要增加发射功率时，丢弃数据呼叫并组合用于语音传输的语音和数据输出分支。

公开(公告)号：US06999500B2

公开(公告)日：2006-02-14

申请号：US10005453

申请日：2001-11-02

Applicant: Mohammad J. Mohseni ,  Brian K. Butler ,  Deepu John ,  Haitao Zhang

Inventor： Mohammad J. Mohseni ,  Brian K. Butler ,  Deepu John ,  Haitao Zhang

IPC: H04B1/69 ,  H04B1/707 ,  H04B1/713

CPC classification number: H04B1/7093 ,  H04B1/707

Abstract: A spreading system according to an embodiment of the invention spreads two data signals. The system produces a filtered signal that is based on one of the data signals and an output signal that is based on both of the data signals. In one example, a spreading system is used to perform QPSK spreading of two data signals, including separate processing of the two data signals, in a practical manner. Such separate control may include filtering and/or gain control.

公开(公告)号：US06996283B2

公开(公告)日：2006-02-07

申请号：US10298030

申请日：2002-11-15

Applicant: Kadayam Thyagarajan

Inventor： Kadayam Thyagarajan

IPC: G06K9/36 ,  H04N1/415

CPC classification number: H04H60/04 ,  H04N19/119 ,  H04N19/14 ,  H04N19/176 ,  H04N19/60 ,  H04N19/96

Abstract: An apparatus and method for determining a block size assignment for a block of pixels is claimed. A mean for a given block of pixels and a neighborhood mean for adjacent blocks of pixels is determined. A contrast ratio is then determined, as a function of the mean and the neighborhood mean. A variance threshold is determined as a function of the contrast ratio. Then, various sub-block sizes within the block of pixels is determined as a function of the variance threshold. As such, a pixel block is considered in the context of adjacent pixel blocks rather than in isolation, which narrows the spread of block variances and allows for a more robust subdivision of pixel blocks.

Abstract translation: 声明了一种用于确定像素块的块大小分配的装置和方法。 确定给定像素块的平均值和相邻像素块的邻域平均值。 然后确定对比度，作为平均值和邻域平均值的函数。 方差阈值被确定为对比度的函数。 然后，确定像素块内的各种子块尺寸作为方差阈值的函数。 因此，像素块在相邻像素块的上下文中被考虑，而不是孤立地考虑，其减小了块方差的扩展，并且允许像素块的更加鲁棒的细分。

公开(公告)号：US06980823B2

公开(公告)日：2005-12-27

申请号：US10206630

申请日：2002-07-26

Applicant: Raghu Challa ,  Baaziz Achour ,  Robbin D. Hughes

Inventor： Raghu Challa ,  Baaziz Achour ,  Robbin D. Hughes

IPC: H04L29/00 ,  H04B1/16 ,  H04B1/707 ,  H04B7/26 ,  H04W52/02 ,  H04B7/00

CPC classification number: H04B1/70756 ,  H04B2201/70709 ,  H04W52/0216 ,  H04W52/029 ,  H04W56/0035 ,  Y02D70/40

Abstract: Various techniques for improving a wireless communication device are described. The techniques may include reducing power in a wireless communication device for a first sleep period and then increasing power in the wireless communication device for an intermediate wake period after the first sleep period to estimate an error of the sleep clock. The method may further include reducing power in the wireless communication device for a second sleep period after the intermediate wake period. The intermediate wake mode implemented during the intermediate period can be used to estimate the error of the sleep clock without performing one or more tasks associated with an awake mode, such as demodulation. The techniques may facilitate the effective use of low frequency low power clocks for sleep mode, even when relatively large slot cycles are defined within a slotted paging system.

Abstract translation: 描述了用于改进无线通信设备的各种技术。 这些技术可以包括在第一睡眠周期内减少无线通信设备中的功率，然后在第一睡眠周期之后的中间唤醒周期增加无线通信设备中的功率，以估计睡眠时钟的误差。 该方法还可以包括在中间唤醒周期之后的第二睡眠周期内减少无线通信设备中的功率。 在中间周期期间实现的中间唤醒模式可以用于估计休眠时钟的误差，而不执行与诸如解调之类的唤醒模式相关联的一个或多个任务。 即使在时隙寻呼系统中定义相对较大的时隙周期，这些技术可以有助于有效地使用低频低功率时钟用于睡眠模式。

公开(公告)号：USD511507S1

公开(公告)日：2005-11-15

申请号：US29197441

申请日：2004-01-14

Applicant: Thomas J. Chintala ,  Douglas Howard Moe ,  Ramin Moallemi ,  Kimberly Meyer Koro ,  Gregory Paul Heinzinger ,  Joel Gordon Delman ,  Scott R. Semenik

Designer： Thomas J. Chintala ,  Douglas Howard Moe ,  Ramin Moallemi ,  Kimberly Meyer Koro ,  Gregory Paul Heinzinger ,  Joel Gordon Delman ,  Scott R. Semenik