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1. 发明申请

US20060262837A1 Acquisition matched filter for W-CDMA systems providing frequency offset robustness 有权
公开(公告)号：US20060262837A1
公开(公告)日：2006-11-23
申请号：US11494660
申请日：2006-07-27
申请人： Li Chang , Kapil Chawla , Nelson Sollenberger
发明人： Li Chang , Kapil Chawla , Nelson Sollenberger
IPC分类号： H04B1/707 , H04B1/00
CPC分类号： H04B1/7077 , H04B1/7093
摘要： A system and method for acquiring a transmitted spread-spectrum signal uses a matched filter configuration that is preferably employed as a Stage 2 filter in the second phase of an initial signal acquisition procedure performed in the receiver. In operation, a Stage 1 filter matches a sequence which is repeated a number of times according to a second sequence within a secondary synchronization sub-channel of the spread-spectrum signal. The Stage 2 filter of the invention then filters the output of the Stage 1 filter in order to recover a secondary synchronization code. The Stage 2 filters the output of the Stage 1 filter using three matched filters of its own. The first and second filters sample different taps of a sequence output from the Stage 1 filter. The third filter samples a predetermined number of taps overlapping taps for the first and second filters in a way that resolves ambiguities with respect to the identification of the sequence. The ambiguity resolution performed by the third filter improves the frequency offset robustness and thus the overall performance of the receiver.

2. 发明授权

US07106787B2 Acquisition matched filter for W-CDMA systems providing frequency offset robustness 有权
公开(公告)号：US07106787B2
公开(公告)日：2006-09-12
申请号：US09994763
申请日：2001-11-28
申请人： Li Fung Chang , Kapil Chawla , Nelson Sollenberger
发明人： Li Fung Chang , Kapil Chawla , Nelson Sollenberger
IPC分类号： H04B1/707
CPC分类号： H04B1/7077 , H04B1/7093
摘要： A system and method for acquiring a transmitted spread-spectrum signal uses a matched filter configuration that is preferably employed as a Stage 2 filter in the second phase of an initial signal acquisition procedure performed in the receiver. In operation, a Stage 1 filter matches a sequence which is repeated a number of times according to a second sequence within a secondary synchronization sub-channel of the spread-spectrum signal. The Stage 2 filter of the invention then filters the output of the Stage 1 filter in order to recover a secondary synchronization code. The Stage 2 filters the output of the Stage 1 filter using three matched filters of its own. The first and second filters sample different taps of a sequence output from the Stage 1 filter. The third filter samples a predetermined number of taps overlapping taps for the first and second filters in a way that resolves ambiguities with respect to the identification of the sequence. The ambiguity resolution performed by the third filter improves the frequency offset robustness and thus the overall performance of the receiver.

3. 发明授权

US07508866B2 Acquisition matched filter for W-CDMA systems providing frequency offset robustness 有权
标题翻译： W-CDMA系统采集匹配滤波器提供频偏功能
公开(公告)号：US07508866B2
公开(公告)日：2009-03-24
申请号：US11494660
申请日：2006-07-27
申请人： Li Fung Chang , Kapil Chawla , Nelson Sollenberger
发明人： Li Fung Chang , Kapil Chawla , Nelson Sollenberger
IPC分类号： H04B1/69 , H04L27/06
CPC分类号： H04B1/7077 , H04B1/7093
摘要： A system and method for acquiring a transmitted spread-spectrum signal uses a matched filter configuration that is preferably employed as a Stage 2 filter in the second phase of an initial signal acquisition procedure performed in the receiver. In operation, a Stage 1 filter matches a sequence which is repeated a number of times according to a second sequence within a secondary synchronization sub-channel of the spread-spectrum signal. The Stage 2 filter of the invention then filters the output of the Stage 1 filter in order to recover a secondary synchronization code. The Stage 2 filters the output of the Stage 1 filter using three matched filters of its own. The first and second filters sample different taps of a sequence output from the Stage 1 filter. The third filter samples a predetermined number of taps overlapping taps for the first and second filters in a way that resolves ambiguities with respect to the identification of the sequence. The ambiguity resolution performed by the third filter improves the frequency offset robustness and thus the overall performance of the receiver.
摘要翻译：用于获取发送的扩频信号的系统和方法使用在接收机中执行的初始信号获取过程的第二阶段中优选地用作阶段2滤波器的匹配滤波器配置。在操作中，阶段1滤波器根据扩展频谱信号的辅同步子信道中的第二序列重复多次重复的序列。然后，本发明的阶段2滤波器对第一阶段滤波器的输出进行滤波，以恢复次同步码。阶段2使用自己的三个匹配的过滤器过滤第一阶段过滤器的输出。第一个和第二个滤波器从Stage 1滤波器中抽取出序列输出的不同抽头。第三滤波器以解决相对于序列的识别的模糊度的方式针对第一和第二滤波器对预定数量的抽头重叠抽头进行抽样。由第三滤波器执行的模糊度分辨率提高了频率偏移鲁棒性，从而提高了接收机的整体性能。

4. 发明申请

US20070189523A1 Method and system for a ciphering interface with list processing 失效
标题翻译：具有列表处理的加密接口的方法和系统
公开(公告)号：US20070189523A1
公开(公告)日：2007-08-16
申请号：US11353687
申请日：2006-02-14
申请人： Yi Zhou , Li Chang , Nelson Sollenberger
发明人： Yi Zhou , Li Chang , Nelson Sollenberger
IPC分类号： H04K1/06
CPC分类号： H04L9/0618 , H04L2209/12
摘要： A method and system for ciphering interface with list processing is described. Various aspects of a system for ciphering interface with list processing may include a cipher module that enables deciphering and/or bit stuffing, in hardware, of a potion of one of a plurality of data blocks starting at any bit location that is subsequent to a first bit of the one of the plurality of data blocks. One of the plurality of data blocks may comprise at least one data word. A modulus of a number representing the bit location with respect to a number of bits in the one of the data words may be a number greater than 0. The cipher module may enable selection of any bit location based on and index and/or an offset. The cipher module may enable selection of deciphering and/or bit stuffing based on configured information.
摘要翻译：描述了用列表处理加密接口的方法和系统。用于加密具有列表处理的接口的系统的各个方面可以包括密码模块，其能够在硬件中解密和/或位填充多个数据块中的一个数据块的一部分，从在第一所述多个数据块中的一个。多个数据块中的一个可以包括至少一个数据字。表示相对于数据字中的一个数据位的位数的数字的模数可以是大于0的数字。加密模块可以使得能够基于索引和/或偏移来选择任何位位置。密码模块可以使得能够基于配置的信息来选择解密和/或位填充。

5. 发明申请

US20070025428A1 WCDMA terminal baseband processing module having cell searcher module 失效
标题翻译： WCDMA终端基带处理模块具有小区搜索器模块
公开(公告)号：US20070025428A1
公开(公告)日：2007-02-01
申请号：US11221145
申请日：2005-09-06
申请人： Mark Hahm , Li Chang , Nelson Sollenberger
发明人： Mark Hahm , Li Chang , Nelson Sollenberger
IPC分类号： H04B1/707
CPC分类号： H04B1/70735 , H04B1/7083 , H04B2201/70707
摘要： A baseband processing module includes TX processing components, a processor, memory, an RX interface, and a cell searcher module. The TX processing components receive outbound data, process the outbound data to produce a baseband TX signal, and output the baseband TX signal to a RF front end of the RF transceiver. The RX interface receives a baseband RX signal from the RF front end carrying a WCDMA signal. The cell searcher module receives the baseband RX signal, scans for WCDMA energy within the baseband RX signal, acquires slot synchronization to the WCDMA signal based upon correlation with a Primary Synchronization Channel (PSCH) of the WCDMA signal, acquires frame synchronization to, and identify a code group of, the WCDMA signal based upon correlation with a Secondary Synchronization Channel (SSCH) of the WCDMA signal, and identifies the scrambling code of the WCDMA signal based upon correlation with a Common Pilot Channel (CPICH) of the WCDMA signal.
摘要翻译：基带处理模块包括TX处理组件，处理器，存储器，RX接口和小区搜索器模块。 TX处理组件接收出站数据，处理出站数据以产生基带TX信号，并将基带TX信号输出到RF收发器的RF前端。 RX接口从承载WCDMA信号的RF前端接收基带RX信号。小区搜索器模块接收基带RX信号，扫描基带RX信号内的WCDMA能量，基于与WCDMA信号的主同步信道（PSCH）的相关性，获取WCDMA信号的时隙同步，获取帧同步和识别基于与WCDMA信号的次同步信道（SSCH）的相关性的WCDMA信号的码组，并且基于与WCDMA信号的公共导频信道（CPICH）的相关性来识别WCDMA信号的扰码。

6. 发明申请

US20070155334A1 Adaptive channel quality estimation algorithm to support link adaptation 有权
标题翻译：自适应信道质量估计算法支持链路自适应
公开(公告)号：US20070155334A1
公开(公告)日：2007-07-05
申请号：US11714982
申请日：2007-03-07
申请人： Li Chang , Yongqian Wang , Xiaoxin Qiu , Nelson Sollenberger
发明人： Li Chang , Yongqian Wang , Xiaoxin Qiu , Nelson Sollenberger
IPC分类号： H04B17/00
CPC分类号： H04L27/0012 , H04B17/327 , H04L1/0003 , H04L1/0009 , H04L1/0026 , H04L1/0045 , H04L1/0075 , H04L1/203 , H04L25/03261 , H04L25/03318
摘要： RF communications received by a wireless terminal from a servicing base station are used to determine the channel quality such as reported bit error probability (BEP). The RF communications may be in the form of RF bursts that are part of a data frame. An estimated BEP may be determined from the signal to noise ratio (SNR) of the RF bursts and or a sequence of soft decisions extracted from the RF bursts, and their historical performance. The SNR maps to an estimated BEP based upon the modulation format of the RF bursts. The soft decisions decode to produce a data block. When the soft decisions decoded favorably, the re-encoded data block produces a sequence of re-encoded decisions. Comparing the re-encoded decisions to the soft decisions yields a re-encoded bit error (RBER). The reported BEP may be based upon the estimated BEP, RBER, and/or RBER threshold. The RBER threshold may be adaptively incremented or decremented depending upon whether or not the RF communications were properly decoded. The size of the increment or decrement may be based on the channel quality.
摘要翻译：使用无线终端从服务基站接收的RF通信来确定诸如所报告的比特错误概率（BEP）的信道质量。 RF通信可以是作为数据帧的一部分的RF突发的形式。可以根据RF突发的信噪比（SNR）和从RF突发提取的一系列软判决及其历史性能来确定估计的BEP。 SNR基于RF突发的调制格式映射到估计的BEP。软判决解码以产生数据块。当软判决被有利地解码时，重新编码的数据块产生一系列重新编码的决定。将重新编码的决定与软判决进行比较产生重编码位错误（RBER）。报告的BEP可以基于估计的BEP，RBER和/或RBER阈值。 RBER阈值可以根据RF通信是否被正确解码而自适应地递增或递减。增量或减量的大小可以基于通道质量。

7. 发明申请

US20070081612A1 Edge incremental redundancy support in a cellular wireless terminal 失效
公开(公告)号：US20070081612A1
公开(公告)日：2007-04-12
申请号：US11636032
申请日：2006-12-08
申请人： Li Chang , Nelson Sollenberger , Yongqian Wang , Aki Shohara , Yue Chen
发明人： Li Chang , Nelson Sollenberger , Yongqian Wang , Aki Shohara , Yue Chen
IPC分类号： H04L27/00
CPC分类号： H04L1/0059 , H04L1/0003 , H04L1/0009 , H04L1/0026 , H04L1/0065 , H04L1/0068 , H04L1/0069 , H04L1/0071 , H04L1/1816 , H04L1/1819 , H04L1/1829 , H04L1/1835 , H04L1/1845 , H04L1/203 , H04L1/208 , H04L25/03006 , H04L25/03318 , H04L25/067 , H04L27/0008 , H04L2025/03401 , H04L2025/03407 , H04L2025/03726 , H04L2027/0038
摘要： A system for implementing Incremental Redundancy (IR) operations in a wireless receiver includes a baseband processor, an equalizer, a system processor, and an IR processing module. The baseband processor receives an analog signal corresponding to a data block and samples the analog signal to produce samples. The equalizer receives the samples from the baseband processor, equalizes the samples, and produces soft decision bits corresponding to the data block. The equalizer may be implemented as a distinct processing component or may be performed by the baseband processor or system processor. The system processor receives at least the soft decision bits and initiates IR operations. The IR processing module receives the soft decision bits of the data block and performs IR operations on the data block in an attempt to correctly decode a corresponding data block.

8. 发明授权

US09198149B2 Two-step searcher for cell discovery 有权
标题翻译：用于细胞发现的两步搜索器
公开(公告)号：US09198149B2
公开(公告)日：2015-11-24
申请号：US13432320
申请日：2012-03-28
申请人： Mark Hahm , Severine Catreux , Nelson Sollenberger
发明人： Mark Hahm , Severine Catreux , Nelson Sollenberger
IPC分类号： H04W56/00 , H04W36/18 , H03M13/37 , H03M13/39 , H04L1/00
CPC分类号： H04W56/002 , H03M13/3723 , H03M13/3905 , H03M13/3972 , H04L1/005 , H04W36/18
摘要： Disclosed are various embodiments involving a two-step searcher for cell discovery. Multiple scrambling codes associated with multiple neighboring cells are obtained. Slot timing is obtained for a received signal based at least in part on a detection of primary synchronization peak energy in the received signal. One of the scrambling codes for decoding the received signal is identified based at least in part on testing multiple scrambling code hypotheses in parallel during an accumulation time period of the received signal in response to obtaining the slot timing.
摘要翻译：公开了涉及用于细胞发现的两步搜索器的各种实施例。获得与多个相邻小区相关联的多个扰码。至少部分地基于对接收信号中的主同步峰值能量的检测，对于接收信号获得时隙定时。至少部分地基于在接收到的信号的累积时间段期间响应于获得时隙定时来并行测试多个扰码假设来识别用于解码接收信号的扰码之一。

9. 发明授权

US09014740B2 Enhanced multiple SIM time tracking 有权
标题翻译：增强的多SIM时间跟踪
公开(公告)号：US09014740B2
公开(公告)日：2015-04-21
申请号：US13481692
申请日：2012-05-25
申请人： Nelson Sollenberger , Wei Luo , Xiao-Feng Qi , Kaiping Li
发明人： Nelson Sollenberger , Wei Luo , Xiao-Feng Qi , Kaiping Li
IPC分类号： H04W56/00 , H04W48/16 , H04W88/06 , H04W52/02 , H04W76/04
CPC分类号： H04W56/0015 , H04W52/0216 , H04W76/28 , H04W88/06 , Y02D70/1222 , Y02D70/1242 , Y02D70/1262 , Y02D70/144 , Y02D70/168 , Y02D70/24
摘要： A technique for time tracking helps a mobile communication device with multiple SIMs to more accurately maintain synchronization with a base station. By utilizing synchronization information from both SIMs, the technique is able to more frequently and more accurately adjust timing information for each SIM. As a result, the mobile communication device exhibits an increased ability to accurately synchronize without the need for a higher precision reference or increased power consumption.
摘要翻译：用于时间跟踪的技术帮助具有多个SIM的移动通信设备更准确地保持与基站的同步。通过利用来自两个SIM的同步信息，该技术能够更频繁和更准确地调整每个SIM的定时信息。结果，移动通信设备表现出增加的准确同步的能力，而不需要更高精度的参考或增加的功耗。

10. 发明授权

US08924830B2 Method and system for decoding control data in GSM-based systems using inherent redundancy 有权
标题翻译：用于使用固有冗余来解码基于GSM的系统中的控制数据的方法和系统
公开(公告)号：US08924830B2
公开(公告)日：2014-12-30
申请号：US13277017
申请日：2011-10-19
申请人： Arie Heiman , Nelson Sollenberger , Arkady Molev-Shteiman
发明人： Arie Heiman , Nelson Sollenberger , Arkady Molev-Shteiman
IPC分类号： H03M13/03 , H03M13/09 , H03M13/41 , H04L1/00 , H03M13/00
CPC分类号： H03M13/09 , H03M13/175 , H03M13/3738 , H03M13/41 , H03M13/4115 , H03M13/4169 , H03M13/6337 , H03M13/6536 , H04L1/005 , H04L1/0054 , H04L1/0059 , H04L1/0061 , H04L1/0072
摘要： A method and system for decoding control data in GSM-based systems using inherent redundancy and physical constraints are presented. At least one estimated GSM-based bit sequence may be selected by performing searches that start from trellis junctions determined by the decoding algorithm. The estimated bit sequences may be selected based on corresponding redundancy verification parameters. At least one physical constraint test may be performed on the selected estimated GSM-based bit sequences to select a decoded output GSM-based bit sequence. A multilayer decoding process may comprise a burst process and a frame process. Results from a first burst process may be utilized to generate a decoded GSM bit sequence in the frame process. The frame process may utilize redundancy information and physical constraints to improve the performance of a decoding algorithm.
摘要翻译：提出了一种使用固有冗余和物理约束对基于GSM的系统中的控制数据进行解码的方法和系统。可以通过执行从由解码算法确定的网格结开始的搜索来选择至少一个估计的基于GSM的比特序列。可以基于相应的冗余验证参数来选择估计的比特序列。可以对所选择的估计的基于GSM的比特序列执行至少一个物理约束测试，以选择解码的输出基于GSM的比特序列。多层解码过程可以包括突发过程和帧过程。来自第一突发处理的结果可以用于在帧处理中生成解码的GSM比特序列。帧处理可以利用冗余信息和物理约束来提高解码算法的性能。

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