专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明申请

US20100322117A1 METHODS AND APPARATUS FOR INITIAL ACQUISITION IN A COMMUNICATION SYSTEM 有权
标题翻译：在通信系统中初始采集的方法和装置
公开(公告)号：US20100322117A1
公开(公告)日：2010-12-23
申请号：US12796009
申请日：2010-06-08
申请人： Remi J. Gurski , Raghu N. Challa , Matthias Brehler
发明人： Remi J. Gurski , Raghu N. Challa , Matthias Brehler
IPC分类号： H04J3/00
CPC分类号： H03G3/3078 , H03G3/3042 , H03G3/3052 , H04B1/70735 , H04B1/708
摘要： Disclosed are methods and apparatus for initial acquisition in a communication system, and in particular Time Division Duplex (TDD) systems such as those found in LTE. A disclosed method, for example, includes running a plurality of predetermined amplifier gain states for a low noise amplifier (LNA) during initial acquisition in a time division duplex (TDD) system, and determining acquisition of a received signal based on searching across the plurality of predetermined amplifier gain states. Forcing the amplifier gain into a set of predetermined gain states affords quicker resolution of initial acquisition for setting the gain of the LNA, which in TDD systems is complicated due to an uncertain uplink/downlink timeline that precludes continuous operation of a gain setting algorithm run in the LNA.
摘要翻译：公开了用于在通信系统中的初始采集的方法和装置，特别是诸如在LTE中发现的时分双工（TDD）系统。所公开的方法例如包括在时分双工（TDD）系统中的初始采集期间运行用于低噪声放大器（LNA）的多个预定的放大器增益状态，以及基于跨越多个的搜索来确定接收信号的获取的预定放大器增益状态。将放大器增益强制为一组预定增益状态可以提供更快的初始采集分辨率，用于设置LNA的增益，由于不确定的上行链路/下行链路时间轴，TDD系统复杂，导致增加设置算法持续运行， LNA。

2. 发明授权

US08730915B2 Multiple input multiple output (MIMO) based concurrent scan of neighbor cells 有权
标题翻译：基于多输入多输出（MIMO）的相邻小区的并发扫描
公开(公告)号：US08730915B2
公开(公告)日：2014-05-20
申请号：US13237675
申请日：2011-09-20
申请人： Steven D. Cheng , Remi J. Gurski , Kuo-Chun Lee , Tom Chin , Guangming Shi
发明人： Steven D. Cheng , Remi J. Gurski , Kuo-Chun Lee , Tom Chin , Guangming Shi
IPC分类号： H04W4/00
CPC分类号： H04W36/0094 , H04B7/0413 , H04B17/318 , H04B17/382 , H04W36/0083 , H04W36/14 , H04W88/06
摘要： Methods, systems, and devices are described for concurrently performing handoff-related measurements for neighbor cells using multiple input multiple output (MIMO) antenna resources. In one example, a mobile device is in communication with a serving cell. Handoff-related measurements of first wireless signals from a first neighbor cell are performed. The first wireless signals are received at first MIMO antenna resources of a device. Handoff-related measurements of second wireless signals from a second neighbor cell are performed, as well. The second wireless signals are received at second MIMO antenna resources concurrently with the first wireless signals received at the first MIMO antenna resources. The first handoff-related measurements and the second handoff-related measurements may be performed during a scan interval. A type of handoff-related measurement to perform may be determined based on a determined length of the scan interval.
摘要翻译：描述了用于使用多输入多输出（MIMO）天线资源同时执行相邻小区的切换相关测量的方法，系统和设备。在一个示例中，移动设备与服务小区通信。执行来自第一相邻小区的第一无线信号的切换相关测量。在设备的第一MIMO天线资源处接收第一无线信号。也执行来自第二相邻小区的第二无线信号的切换相关测量。第二无线信号在与第一MIMO天线资源接收的第一无线信号同时在第二MIMO天线资源处被接收。可以在扫描间隔期间执行第一切换相关测量和第二越区切换相关测量。可以基于所确定的扫描间隔的长度来确定要执行的切换相关测量的类型。

3. 发明授权

US08416733B2 Time tracking loops for a communication system utilizing a cyclic prefix 失效
标题翻译：利用循环前缀的通信系统的时间跟踪循环
公开(公告)号：US08416733B2
公开(公告)日：2013-04-09
申请号：US12825146
申请日：2010-06-28
申请人： Shivratna G. Srinivasan , Michael L. McCloud , Remi J. Gurski , Sunil Kumar Kandukuri Narayana
发明人： Shivratna G. Srinivasan , Michael L. McCloud , Remi J. Gurski , Sunil Kumar Kandukuri Narayana
IPC分类号： H04B7/212
CPC分类号： H04L27/2662 , H04L25/0212 , H04L27/2665
摘要： Techniques for performing time tracking in a communication system utilizing a cyclic prefix are described. In an aspect, a receiver may detect for large timing errors based on early and late received samples obtained with early and late FFT windows, respectively. The receiver may derive first and second channel impulse response (CIR) estimates based on the early and late received samples, respectively, determine an early channel energy based on the first CIR estimate, determine a late channel energy based on the second CIR estimate, compute an update amount based on the early and late channel energies, and update the FFT window position based on the update amount. In another aspect, the receiver may perform time tracking with an inner time tracking loop (TTL) and an outer TTL. The receiver may update the FFT window position in coarse steps with the outer TTL and in fine steps with the inner TTL.
摘要翻译：描述了在利用循环前缀的通信系统中执行时间跟踪的技术。在一方面，接收机可以分别基于早期和晚期FFT窗口获得的早期和晚期接收样本来检测大的定时误差。接收机可以基于早期和晚期接收的采样分别导出第一和第二信道脉冲响应（CIR）估计，基于第一CIR估计确定早期信道能量，基于第二CIR估计确定后期信道能量，计算基于早期和晚期信道能量的更新量，并且基于更新量来更新FFT窗口位置。在另一方面，接收机可以利用内部时间跟踪环（TTL）和外部TTL来执行时间跟踪。接收机可以以外部TTL以粗略的步骤更新FFT窗口位置，并以内部TTL进行微调。

4. 发明授权

US08989061B2 Methods and apparatus for initial acquisition in a communication system 有权
标题翻译：通信系统中初始采集的方法和装置
公开(公告)号：US08989061B2
公开(公告)日：2015-03-24
申请号：US12796009
申请日：2010-06-08
申请人： Remi J. Gurski , Matthias Brehler , Raghu N. Challa
发明人： Remi J. Gurski , Matthias Brehler , Raghu N. Challa
IPC分类号： H04J3/00 , H03G3/30 , H04B1/7073 , H04B1/708
CPC分类号： H03G3/3078 , H03G3/3042 , H03G3/3052 , H04B1/70735 , H04B1/708
摘要： A plurality of predetermined amplifier gain states for a low noise amplifier (LNA) are run during initial acquisition in a time division duplex (TDD) system. Acquisition of a received signal is determined based on searching across the plurality of predetermined amplifier gain states. Forcing the amplifier gain into a set of predetermined gain states affords quicker resolution of initial acquisition for setting the gain of the LNA, which in TDD systems is complicated due to an uncertain uplink/downlink timeline that precludes continuous operation of a gain setting algorithm run in the LNA.
摘要翻译：在时分双工（TDD）系统的初始采集期间，运行低噪声放大器（LNA）的多个预定的放大器增益状态。基于在多个预定的放大器增益状态中搜索来确定接收信号的获取。将放大器增益强制为一组预定增益状态可以提供更快的初始采集分辨率，用于设置LNA的增益，由于不确定的上行链路/下行链路时间轴，TDD系统复杂，导致增加设置算法持续运行， LNA。

5. 发明申请

US20130072189A1 MULTIPLE INPUT MULTIPLE OUTPUT (MIMO) BASED CONCURRENT SCAN OF NEIGHBOR CELLS 有权
标题翻译：多输入多输出（MIMO）基于相邻电流的并行扫描
公开(公告)号：US20130072189A1
公开(公告)日：2013-03-21
申请号：US13237675
申请日：2011-09-20
申请人： Steven D. Cheng , Remi J. Gurski , Kuo-Chun Lee , Tom Chin , Guangming Shi
发明人： Steven D. Cheng , Remi J. Gurski , Kuo-Chun Lee , Tom Chin , Guangming Shi
IPC分类号： H04W36/30
CPC分类号： H04W36/0094 , H04B7/0413 , H04B17/318 , H04B17/382 , H04W36/0083 , H04W36/14 , H04W88/06
摘要： Methods, systems, and devices are described for concurrently performing handoff-related measurements for neighbor cells using multiple input multiple output (MIMO) antenna resources. In one example, a mobile device is in communication with a serving cell. Handoff-related measurements of first wireless signals from a first neighbor cell are performed. The first wireless signals are received at first MIMO antenna resources of a device. Handoff-related measurements of second wireless signals from a second neighbor cell are performed, as well. The second wireless signals are received at second MIMO antenna resources concurrently with the first wireless signals received at the first MIMO antenna resources. The first handoff-related measurements and the second handoff-related measurements may be performed during a scan interval. A type of handoff-related measurement to perform may be determined based on a determined length of the scan interval.
摘要翻译：描述了用于使用多输入多输出（MIMO）天线资源同时执行相邻小区的切换相关测量的方法，系统和设备。在一个示例中，移动设备与服务小区通信。执行来自第一相邻小区的第一无线信号的切换相关测量。在设备的第一MIMO天线资源处接收第一无线信号。也执行来自第二相邻小区的第二无线信号的切换相关测量。第二无线信号在与第一MIMO天线资源接收的第一无线信号同时在第二MIMO天线资源处被接收。可以在扫描间隔期间执行第一切换相关测量和第二越区切换相关测量。可以基于所确定的扫描间隔的长度来确定要执行的切换相关测量的类型。

6. 发明申请

US20110149943A1 TIME TRACKING LOOPS FOR A COMMUNICATION SYSTEM UTILIZING A CYCLIC PREFIX 失效
标题翻译：用于使用循环前缀的通信系统的时间跟踪器
公开(公告)号：US20110149943A1
公开(公告)日：2011-06-23
申请号：US12825146
申请日：2010-06-28
申请人： Shivratna G. Srinivasan , Michael L. McCloud , Remi J. Gurski , Sunil Kumar Kandukuri Narayana
发明人： Shivratna G. Srinivasan , Michael L. McCloud , Remi J. Gurski , Sunil Kumar Kandukuri Narayana
IPC分类号： H04L27/06 , H04J1/00
CPC分类号： H04L27/2662 , H04L25/0212 , H04L27/2665
摘要： Techniques for performing time tracking in a communication system utilizing a cyclic prefix are described. In an aspect, a receiver may detect for large timing errors based on early and late received samples obtained with early and late FFT windows, respectively. The receiver may derive first and second channel impulse response (CIR) estimates based on the early and late received samples, respectively, determine an early channel energy based on the first CIR estimate, determine a late channel energy based on the second CIR estimate, compute an update amount based on the early and late channel energies, and update the FFT window position based on the update amount. In another aspect, the receiver may perform time tracking with an inner time tracking loop (TTL) and an outer TTL. The receiver may update the FFT window position in coarse steps with the outer TTL and in fine steps with the inner TTL.
摘要翻译：描述了在利用循环前缀的通信系统中执行时间跟踪的技术。在一方面，接收机可以分别基于早期和晚期FFT窗口获得的早期和晚期接收样本来检测大的定时误差。接收机可以基于早期和晚期接收的采样分别导出第一和第二信道脉冲响应（CIR）估计，基于第一CIR估计确定早期信道能量，基于第二CIR估计确定后期信道能量，计算基于早期和晚期信道能量的更新量，并且基于更新量来更新FFT窗口位置。在另一方面，接收机可以利用内部时间跟踪环（TTL）和外部TTL来执行时间跟踪。接收机可以以外部TTL以粗略的步骤更新FFT窗口位置，并以内部TTL进行微调。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式