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. 发明授权

US06584313B2 Offline page of monitoring 有权
标题翻译：离线页面的监控
公开(公告)号：US06584313B2
公开(公告)日：2003-06-24
申请号：US09828588
申请日：2001-04-05
申请人： Brian K. Butler , Haitao Zhang , Edward G. Tiedemann, Jr. , Qiuzhen Zou , Gilbert C. Sih , Avneesh Agrawal
发明人： Brian K. Butler , Haitao Zhang , Edward G. Tiedemann, Jr. , Qiuzhen Zou , Gilbert C. Sih , Avneesh Agrawal
IPC分类号： H04Q720
CPC分类号： H04B1/70751 , H04B1/7077 , H04B1/70775 , H04B1/7115 , H04B2201/70701 , H04B2201/70702 , H04W52/0229 , Y02D70/40
摘要： A novel and improved method for performing paging is described. In one embodiment of the invention a searcher is used to detect spread spectrum signals. Samples received RF signals are stored in a sample buffer. During standby mode, the samples are gathered during paging slots assigned to the mobile. A set of searches are performed on the samples, and if pilot signals are detected additional demodulation is performed to detect paging messages. The resulting set of demodulation data may be combined to increase detection. After a page message has been detected, additional demodulation resources may be activated to processes more complete page messages, or other information channels. In one embodiment of the invention, the searcher includes a demodulator to perform quick page detection without the use of finger elements to reduce idle mode power consumption.
摘要翻译：描述了一种用于执行寻呼的新颖和改进的方法。在本发明的一个实施例中，搜索器用于检测扩频信号。样品接收的RF信号存储在样品缓冲液中。在待机模式期间，在分配给移动台的寻呼时隙期间收集采样。对样本执行一组搜索，并且如果检测到导频信号，则执行附加解调以检测寻呼消息。可以组合所得到的解调数据集以增加检测。在检测到页面消息之后，可以激活附加解调资源以处理更完整的页面消息或其他信息信道。在本发明的一个实施例中，搜索器包括一个解调器，用于执行快速页面检测，而无需使用手指元件来减少空闲模式功耗。

2. 发明授权

US06243561B1 Offline page monitoring 有权
标题翻译：离线页面监控
公开(公告)号：US06243561B1
公开(公告)日：2001-06-05
申请号：US09172068
申请日：1998-10-13
申请人： Brian K. Butler , Haitao Zhang , Edward G. Tiedemann, Jr. , Qiuzhen Zou , Gilbert C. Sih , Avneesh Agrawal
发明人： Brian K. Butler , Haitao Zhang , Edward G. Tiedemann, Jr. , Qiuzhen Zou , Gilbert C. Sih , Avneesh Agrawal
IPC分类号： H04L2706
CPC分类号： H04B1/70751 , H04B1/7077 , H04B1/70775 , H04B1/7115 , H04B2201/70701 , H04B2201/70702 , H04W52/0229 , Y02D70/40
摘要： A novel and improved method for performing paging is described. In one embodiment of the invention a searcher is used to detect spread spectrum signals. Samples received RF signals are stored in a sample buffer. During standby mode, the samples are gathered during paging slots assigned to the mobile. A set of searches are performed on the samples, and if pilot signals are detected additional demodulation is performed to detect paging messages. The resulting set of demodulation data may be combined to increase detection. After a page message has been detected, additional demodulation resources may be activated to processes more complete page messages, or other information channels. In one embodiment of the invention, the searcher includes a demodulator to perform quick page detection without the use of finger elements to reduce idle mode power consumption.
摘要翻译：描述了一种用于执行寻呼的新颖和改进的方法。在本发明的一个实施例中，搜索器用于检测扩频信号。样本接收的RF信号被存储在样本缓冲器中。在待机模式期间，在分配给移动台的寻呼时隙期间收集采样。对样本执行一组搜索，并且如果检测到导频信号，则执行附加解调以检测寻呼消息。可以组合所得到的解调数据集以增加检测。在检测到页面消息之后，可以激活附加解调资源以处理更完整的页面消息或其他信息信道。在本发明的一个实施例中，搜索器包括一个解调器，用于执行快速页面检测，而无需使用手指元件来减少空闲模式功耗。

3. 发明授权

US06154101A Fast slewing pseudorandom noise sequence generator 有权
标题翻译：快速回转伪随机噪声序列发生器
公开(公告)号：US06154101A
公开(公告)日：2000-11-28
申请号：US198079
申请日：1998-11-23
申请人： Qiuzhen Zou , Gilbert C. Sih , Avneesh Agrawal
发明人： Qiuzhen Zou , Gilbert C. Sih , Avneesh Agrawal
IPC分类号： G06F7/58 , H03K3/84 , H04B7/26 , H04J13/00 , H04J13/10 , H03B29/00
CPC分类号： H04J13/0022 , G06F7/582 , H04J13/10
摘要： A novel and improved method and apparatus for a fast-slewing pseudorandom noise sequence generator is described. One or more loadable PN generators are controlled by a DSP or microprocessor in conjunction with a free-running counter which maintains a reference offset count. The PN generator will typically be part of a finger or searcher. The DSP or microprocessor may assist in other finger or searcher functions as well as the slew function, and can control one or more fingers and/or searchers. Each PN generator is comprised of a loadable linear feedback shift register (LFSR) or its equivalent, a loadable counter for maintaining an index of the state of that particular PN generator, and a slew control device capable of receiving a slew command and controlling the LFSR and index counter to enact an advance or a retard of a certain offset distance.
摘要翻译：描述了一种用于快速回转伪随机噪声序列发生器的新颖和改进的方法和装置。一个或多个可加载的PN发生器由DSP或微处理器与自由运行的计数器结合来维持参考偏移计数来控制。 PN发生器通常是手指或搜索器的一部分。 DSP或微处理器可以协助其他手指或搜索器功能以及转换功能，并且可以控制一个或多个手指和/或搜索器。每个PN发生器由可装载的线性反馈移位寄存器（LFSR）或其等效物组成，用于维持该特定PN发生器的状态的索引的可装载计数器以及能够接收转换命令并控制LFSR的转换控制装置和索引计数器来产生某个偏移距离的提前或延迟。

4. 发明授权

US06195041B1 Reliable position location in memory limited environment 有权
标题翻译：可靠的位置在记忆体有限的环境中
公开(公告)号：US06195041B1
公开(公告)日：2001-02-27
申请号：US09150409
申请日：1998-09-09
申请人： William Gardner , Avneesh Agrawal , Gilbert C. Sih , Qiuzhen Zou , Inyup Kang
发明人： William Gardner , Avneesh Agrawal , Gilbert C. Sih , Qiuzhen Zou , Inyup Kang
IPC分类号： G01S502
CPC分类号： G01S19/235 , G01S5/0036 , G01S5/0063 , G01S19/246 , G01S19/254 , G01S19/256 , G01S19/29 , G01S2205/008
摘要： The present invention is a novel and improved method and apparatus for performing position location in wireless communications system. One embodiment comprises a method for performing position location in a wireless communication system using a set of signals transmitted from a set of satellites including the steps of receiving signal samples, rotating an acquisition code by a first rotation amount yielding a rotated acquisition code, despreading said signal samples using rotated acquisition code yielding despread data, accumulating said despread data over a first duration yielding partially accumulated data, rotating said partially accumulated data by a second rotation amount yielding rotated data and accumulating said rotated data.
摘要翻译：本发明是一种用于在无线通信系统中执行位置定位的新颖且改进的方法和装置。一个实施例包括一种用于在使用从一组卫星发送的一组信号的无线通信系统中执行位置定位的方法，包括以下步骤：接收信号样本，使采集码旋转第一旋转量产生旋转采集码，解扩所述使用旋转获取码的信号样本产生解扩数据，在第一持续时间内积累所述解扩数据产生部分累积的数据，将所述部分累积的数据旋转第二旋转量，产生旋转数据并累加所述旋转的数据。

5. 发明授权

US06608858B1 Multipath doppler adjusted frequency tracking loop 有权
标题翻译：多径多普勒调整频率跟踪回路
公开(公告)号：US06608858B1
公开(公告)日：2003-08-19
申请号：US09491349
申请日：2000-01-26
申请人： Gilbert C. Sih , Avneesh Agrawal , Mark Roh , Brian K. Butler , Raghu Challa
发明人： Gilbert C. Sih , Avneesh Agrawal , Mark Roh , Brian K. Butler , Raghu Challa
IPC分类号： H04B1707
CPC分类号： H04B1/7087 , H04B1/7115 , H04B1/7117 , H04B2201/70701 , H04L27/0014 , H04L2027/0032 , H04L2027/0057 , H04L2027/0087
摘要： A method and apparatus for frequency tracking is described. The present invention provides a tracking mechanism for removing the effects of error due to frequency offset as well as compensation for frequency error due to doppler in a plurality of multipath signals. Each finger of a RAKE receiver utilizing the present invention will compute a frequency error for that finger. The weighted average of all of these frequency errors is calculated and filtered to provide a control signal for varying the frequency of IF and RF frequency synthesizers, accounting for the common frequency offset seen at each finger. Additionally, each finger is equipped with a rotator for providing frequency adjustment specific to that finger. The frequency of each finger is adjusted through feedback of the frequency error for that finger.
摘要翻译：描述了用于频率跟踪的方法和装置。本发明提供了一种用于消除由于频率偏移引起的误差的影响的跟踪机制以及由多个多径信号中的多普勒引起的频率误差的补偿。利用本发明的RAKE接收机的每个手指将计算该手指的频率误差。计算并滤波所有这些频率误差的加权平均值，以提供用于改变IF和RF频率合成器的频率的控制信号，从而考虑每个手指处的共同频率偏移。此外，每个手指配备有用于提供特定于该手指的频率调节的旋转器。每个手指的频率通过该手指的频率误差的反馈进行调整。

6. 发明授权

US06363108B1 Programmable matched filter searcher 有权
标题翻译：可编程匹配滤波器搜索器
公开(公告)号：US06363108B1
公开(公告)日：2002-03-26
申请号：US09283010
申请日：1999-03-31
申请人： Avneesh Agrawal , Qiuzhen Zou
发明人： Avneesh Agrawal , Qiuzhen Zou
IPC分类号： H04B1707
CPC分类号： H04B1/70758 , H04B1/70752 , H04B1/70775 , H04B1/708 , H04B1/7093 , H04B2201/7071
摘要： A novel and improved method and apparatus for searching is described. Channel data is despread utilizing a matched filter structure. The in-phase and quadrature amplitudes of the despreading delivered to coherent accumulators to sum for a programmable duration of time. The amplitude accumulations are squared and summed to produce an energy measurement. The energy measurement is accumulated for a second programmable time to perform non-coherent accumulation. The resulting value is used to determine the likelihood of a pilot signal at that offset. Each matched filter structure comprises an N-value shift register for receiving data, a programmable bank of taps to perform despreading and optional Walsh decovering, and an adder structure to sum the resulting filter tap calculations.
摘要翻译：描述了一种新颖的，改进的搜索方法和装置。利用匹配的滤波器结构对信道数据进行解扩。解扩展的同相和正交幅度传递到相干累加器，以在可编程的持续时间内求和。幅度累积被平方并相加以产生能量测量。对第二可编程时间累积能量测量以执行非相干累加。所得到的值用于确定在该偏移处的导频信号的可能性。每个匹配滤波器结构包括用于接收数据的N值移位寄存器，用于执行解扩和可选的沃尔什解密的抽头的可编程组，以及对所得到的滤波器抽头计算进行求和的加法器结构。

7. 发明授权

US06314534B1 Generalized address generation for bit reversed random interleaving 有权
标题翻译：用于位反转随机交错的广义地址生成
公开(公告)号：US06314534B1
公开(公告)日：2001-11-06
申请号：US09282106
申请日：1999-03-31
申请人： Avneesh Agrawal , Qiuzhen Zou
发明人： Avneesh Agrawal , Qiuzhen Zou
IPC分类号： G11C2900
CPC分类号： H03M13/2789 , H03M13/2703 , H03M13/2735 , H03M13/2764 , H03M13/2771 , H03M13/2957
摘要： A novel and improved method and apparatus for address generation in an interleaver is provided. In accordance with one embodiment of the invention, an address is generated using a random address fragment and a bit reversed address fragment. The bit reversed address fragment is selected by first generating two consecutive candidate bit reversed fragments. The second bit reversed address fragment is selected when the first bit reversed address fragment generates an address that is greater than a maximum address. The address generator allows address generation for interleaver and deinterleaver frame sizes of N, where N is not an integer power of two, without any cycle penalty.
摘要翻译：提供了一种用于在交织器中产生地址的新颖和改进的方法和装置。根据本发明的一个实施例，使用随机地址片段和位反转地址片段来生成地址。通过首先产生两个连续的候选比特反向片段来选择比特反转的地址片段。当第一位反转地址片段生成大于最大地址的地址时，选择第二位反转地址片段。地址生成器允许N的交织器和解交织器帧大小的地址生成，其中N不是2的整数幂，没有任何循环损失。

8. 发明授权

US10064179B2 Carrier assignment for multi-carrier modulation in wireless communication 有权
公开(公告)号：US10064179B2
公开(公告)日：2018-08-28
申请号：US12622202
申请日：2009-11-19
申请人： Rajiv Vijayan , Avneesh Agrawal , Sanjay Jha
发明人： Rajiv Vijayan , Avneesh Agrawal , Sanjay Jha
IPC分类号： H04L27/26 , H04W72/04 , H04L5/00 , H04W52/34 , H04W52/36
CPC分类号： H04W72/0453 , H04L5/0007 , H04L5/0037 , H04L5/0066 , H04L27/2614 , H04W52/343 , H04W52/367
摘要： Techniques for managing peak-to-average power ratio (PAPR) for multi-carrier modulation in wireless communication systems. Different terminals in a multiple-access system may have different required transmit powers. The number of carriers to allocate to each terminal is made dependent on its required transmit power. Terminals with higher required transmit powers may be allocated fewer carriers (associated with smaller PAPR) to allow the power amplifier to operate at higher power levels. Terminals with lower required transmit powers may be allocated more carriers (associated with higher PAPR) since the power amplifier is operated at lower power levels. The specific carriers to assign to the terminals may also be determined by their transmit power levels to reduce out-of-band emissions. Terminals with higher required transmit powers may be assigned with carriers near the middle of the operating band, and terminals with lower required transmit powers may be assigned with carriers near the band edges.

9. 发明授权

US09801188B2 Backhaul signaling for interference avoidance 有权
公开(公告)号：US09801188B2
公开(公告)日：2017-10-24
申请号：US12260849
申请日：2008-10-29
申请人： Aamod Khandekar , Avneesh Agrawal , Ashwin Sampath , Gavin B. Horn , Alexei Gorokhov , Naga Bhushan , Tingfang Ji
发明人： Aamod Khandekar , Avneesh Agrawal , Ashwin Sampath , Gavin B. Horn , Alexei Gorokhov , Naga Bhushan , Tingfang Ji
IPC分类号： H04W4/00 , H04W72/08 , H04W52/24 , H04W72/04 , H04W84/04 , H04W92/20
CPC分类号： H04W72/082 , H04W52/243 , H04W72/0426 , H04W84/045 , H04W92/20 , Y02D70/00
摘要： Providing for interference reduction and/or avoidance utilizing backhaul signaling between wireless access points (APs) of a wireless access network (AN) is described herein. By way of example, an interference avoidance request (IAR) can be issued by an AP to reduce signal interference on forward link (FL) and/or downlink (DL) transmissions by neighboring APs. The IAR can be routed via a backhaul network and/or over-the-air via access terminals (ATs) coupled with the AP or one or more interfering APs. Upon receiving the IAR, an interfering AP can determine reduced transmit power levels for FL and/or RL transmissions and respond to the IAR. The response can include reduced power levels and can be sent via the backhaul network or OTA. By employing the backhaul network in full or in part, interference avoidance can be conducted even for semi-planned or unplanned heterogeneous networks coupled by the backhaul.

10. 发明授权

US09668265B2 Technique for mitigating interference in a celllar wireless communication netwok 有权
公开(公告)号：US09668265B2
公开(公告)日：2017-05-30
申请号：US12409358
申请日：2009-03-23
申请人： Ravi Palanki , Aamod D. Khandekar , Avneesh Agrawal
发明人： Ravi Palanki , Aamod D. Khandekar , Avneesh Agrawal
IPC分类号： H04W24/00 , H04W72/08 , H04L1/00 , H04W52/24 , H04W52/40
CPC分类号： H04W72/082 , H04L1/0036 , H04W52/243 , H04W52/40
摘要： Techniques for mitigating interference in a wireless communication network are described. A terminal may desire to communicate with a weaker serving base station and may observe high interference from a strong interfering base station. The two base stations may be asynchronous and have different frame timing. In an aspect, high interference may be mitigated by having the interfering base station reserve downlink and/or uplink resources. The interfering base station may transmit at a low power level or not at all on the reserved downlink resources to reduce interference to the terminal. Terminals served by the interfering base station may transmit at a low power level or not at all on the reserved uplink resources to reduce interference at the serving base station. The terminal may then be able to communicate with the serving base station.

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