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1. 发明授权

US09300374B2 Communications terminal, apparatus, and method for detecting rank indication 有权
标题翻译：用于检测秩指示的通信终端，装置和方法
公开(公告)号：US09300374B2
公开(公告)日：2016-03-29
申请号：US14358081
申请日：2012-12-19
申请人： Spreadtrum Communications (Shanghai) Co., Ltd.
发明人： Xuqiang Shen , Xiaojian Dong
IPC分类号： H04L27/01 , H04B7/04 , H04L5/00 , H04L25/02 , H04L25/03
CPC分类号： H04B7/0417 , H04L5/0007 , H04L5/0048 , H04L25/0204 , H04L25/0224 , H04L25/03159 , H04L27/01
摘要： Methods and communication terminals for determining rank indication in a multicarrier communication system, wherein communication in the multicarrier communication system is carried out over a plurality of subcarriers, wherein the communication terminal communicates with an interface station within a cell in a multiple-input-multiple-output (MIMO) configuration. In particular, multicarrier symbols are received including pilot signals from the interface station, wherein the pilot signals contain pilot data, and channel properties are estimated based on the received multicarrier symbols, wherein the channel properties include channel properties of at least one subcarrier carrying one of the pilot signals. The pilot data are equalized based on the channel properties for determination of at least one pilot power and at least one interference power based on the equalized pilot data, and a rank indication is determined based on the at least one pilot power and the at least one interference power.
摘要翻译：用于确定多载波通信系统中的秩指示的方法和通信终端，其中在多载波通信系统中的通信是在多个子载波上进行的，其中，所述通信终端以小区内的接口站进行多输入多重通信，输出（MIMO）配置。特别地，接收包括来自接口站的导频信号的多载波符号，其中导频信号包含导频数据，并且基于所接收的多载波符号来估计信道特性，其中信道特性包括至少一个子载波的信道特性，导频信号。基于用于确定至少一个导频功率的信道属性和基于均衡导频数据的至少一个干扰功率，导频数据被均衡，并且基于至少一个导频功率和至少一个导频功率来确定秩指示干扰电力。

2. 发明授权

US09713198B2 Mobile communication method 有权
公开(公告)号：US09713198B2
公开(公告)日：2017-07-18
申请号：US14452920
申请日：2014-08-06
申请人： Spreadtrum Communications (Shanghai) Co., Ltd.
发明人： Xiaojian Dong , Qiang Cao , Dian Xu , Baikui Xu , Yu Dong , Xuqiang Shen
IPC分类号： H04W88/06 , H04W8/22 , H04W36/00
CPC分类号： H04W88/06 , H04W8/22 , H04W36/0022
摘要： A mobile communication method based on a mobile communication terminal is provided, wherein a communication unit of the mobile communication terminal is adapted to working in at least two communication modes, and an antenna assembly of the mobile communication terminal is adapted to selectively working in different communication modes or in a combination of different communication modes. The method includes: selecting, based on a communication mode and a service type of the mobile communication terminal, a coupling relationship between the antenna assembly and the communication unit, so that the mobile communication terminal can work in various working modes; and if the communication mode and/or the service type of the mobile communication terminal changes, adjusting the coupling relationship between the antenna assembly and the communication unit based on the change. The mobile communication terminal using the method has characteristics of small size, low cost and less difficulty to design.

3. 发明授权

US09306773B2 Orthogonal frequency division multiplexing (OFDM) channel estimation to improve the smoothing process 有权
标题翻译：正交频分复用（OFDM）信道估计，以改善平滑过程
公开(公告)号：US09306773B2
公开(公告)日：2016-04-05
申请号：US14233165
申请日：2013-04-28
申请人： SPREADTRUM COMMUNICATIONS (SHANGHAI) CO., LTD.
发明人： Xuqiang Shen , Qiang Cao , Xiaojian Dong
IPC分类号： H04L25/02 , H04L27/26 , H04L5/00
CPC分类号： H04L25/0204 , H04L5/0007 , H04L5/0048 , H04L25/022 , H04L27/2628 , H04L27/2647
摘要： A method of processing communication signals, is described. The method includes receiving a communication signal in a time domain, converting the communication signal to a frequency domain, providing resource blocks, the resource blocks including a first resource block and a second resource block, the first resource block having a first boundary and a second boundary, the first boundary being adjacent to the second resource block, the second boundary being non-adjacent to other resource blocks, the first resource block including pilot signals, generating a third resource block based on the one or more pilot signals, providing a first waveform based on the resource blocks and the third resource block, applying a smoothing filter against the first waveform to generate a second waveform, and converting the second waveform from the frequency domain to the time domain.
摘要翻译：描述了处理通信信号的方法。所述方法包括在时域中接收通信信号，将所述通信信号转换为频域，提供资源块，所述资源块包括第一资源块和第二资源块，所述第一资源块具有第一边界和第二边界所述第一边界与所述第二资源块相邻，所述第二边界与其他资源块不相邻，所述第一资源块包括导频信号，基于所述一个或多个导频信号生成第三资源块，提供第一边界基于资源块和第三资源块的波形，对第一波形施加平滑滤波器以产生第二波形，并将第二波形从频域转换为时域。

4. 发明授权

US09071475B2 Methods and apparatus for noise estimation of communication terminals 有权
标题翻译：通信终端噪声估计方法和装置
公开(公告)号：US09071475B2
公开(公告)日：2015-06-30
申请号：US14002120
申请日：2012-12-19
申请人： Spreadtrum Communications (Shanghai) Co., Ltd.
发明人： Xuqiang Shen , Xiaojian Dong
IPC分类号： H04L25/02 , H04L1/20 , H04L25/03 , H04B17/345 , H04L5/00 , H04B17/318 , H04B17/336
CPC分类号： H04L25/0228 , H04B17/318 , H04B17/336 , H04B17/345 , H04L1/206 , H04L5/0007 , H04L5/0023 , H04L5/0048 , H04L25/03866
摘要： Methods and communication terminals for estimating noise in a multicarrier communication system, where multicarrier symbols are received that include pilot signals, channel properties are estimated based on the received multicarrier symbols, wherein the channel properties include channel properties of a subcarrier carrying one of the pilot signals, and the channel properties of the subcarrier carrying one of the pilot signals are mixed with the corresponding pilot signal to calculate a noise power for the corresponding subcarrier.
摘要翻译：用于估计多载波通信系统中的噪声的方法和通信终端，其中接收到包含导频信号的多载波符号，信道特性，基于所接收的多载波符号，其中信道特性包括承载导频信号之一的子载波的信道特性并且携带导频信号之一的子载波的信道特性与相应的导频信号混合，以计算相应子载波的噪声功率。

5. 发明申请

US20150036650A1 CHANNEL ESTIMATION METHOD FOR OVERCOMING CHANNEL DISCONTINUITY BETWEEN SUBBANDS OF AN ORTHOGONAL FREQUENCY DIVISION MULTIPLEXING (OFDM) SYSTEM 审中-公开
标题翻译：用于在正交频分多址（OFDM）系统的子帧之间传输信道间隔的信道估计方法
公开(公告)号：US20150036650A1
公开(公告)日：2015-02-05
申请号：US14131926
申请日：2013-04-07
申请人： SPREADTRUM COMMUNICATIONS (SHANGHAI) CO., LTD.
发明人： Xuqiang Shen , Qiang Cao , Xiaojian Dong
IPC分类号： H04L5/00 , H04L27/26 , H04W72/04
CPC分类号： H04L5/0048 , H04L5/0023 , H04L25/0204 , H04L25/0212 , H04L25/022 , H04L25/0228 , H04L27/2601 , H04L27/2647 , H04W72/04
摘要： A method of processing signals. The method includes receiving a communication signal in a time domain, converting the communication signal to a frequency domain, providing resource blocks based on the communication signal in the frequency domain, the resource blocks including a first resource block and a second resource block, selecting pilot signals from the first resource block and pilot signals from the second resource block, determining a first set of phase and amplitude differences among the pilot signals, determining a second set of phase and amplitude differences among the pilot signals, determining a third set of phase and amplitude differences between the pilot signals and the pilot signals, generating a first waveform using at least the first and third set of phase and amplitude differences, applying a smoothing filter against the first waveform to generate a second waveform, and converting the third waveform from the frequency domain to the time domain.
摘要翻译：一种处理信号的方法。该方法包括在时域中接收通信信号，将通信信号转换为频域，根据频域中的通信信号提供资源块，资源块包括第一资源块和第二资源块，选择导频来自第一资源块的信号和来自第二资源块的导频信号，确定导频信号之间的第一组相位和幅度差，确定导频信号之间的第二组相位和幅度差，确定第三组相位，导频信号和导频信号之间的幅度差异，使用至少第一和第三组相位和幅度差产生第一波形，对第一波形施加平滑滤波器以产生第二波形，并将第三波形从频域到时域。

6. 发明申请

US20140307641A1 METHODS AND APPARATUS FOR NOISE ESTIMATION OF COMMUNICATION TERMINALS 有权
标题翻译：通信终端噪声估计的方法和装置
公开(公告)号：US20140307641A1
公开(公告)日：2014-10-16
申请号：US14002120
申请日：2012-12-19
申请人： Spreadtrum Communications (Shanghai) Co., Ltd.
发明人： Xuqiang Shen , Xiaojian Dong
IPC分类号： H04L25/02 , H04B17/00
CPC分类号： H04L25/0228 , H04B17/318 , H04B17/336 , H04B17/345 , H04L1/206 , H04L5/0007 , H04L5/0023 , H04L5/0048 , H04L25/03866
摘要： Methods and communication terminals for estimating noise in a multicarrier communication system, where multicarrier symbols are received that include pilot signals, channel properties are estimated based on the received multicarrier symbols, wherein the channel properties include channel properties of a subcarrier carrying one of the pilot signals, and the channel properties of the subcarrier carrying one of the pilot signals are mixed with the corresponding pilot signal to calculate a noise power for the corresponding subcarrier.
摘要翻译：用于估计多载波通信系统中的噪声的方法和通信终端，其中接收到包含导频信号的多载波符号，信道特性，基于所接收的多载波符号，其中信道特性包括承载导频信号之一的子载波的信道特性并且携带导频信号之一的子载波的信道特性与相应的导频信号混合，以计算相应子载波的噪声功率。

7. 发明授权

US09749154B2 Method of channel estimation by phase rotation in an orthogonal frequency division multiplexing (OFDM) system 有权
公开(公告)号：US09749154B2
公开(公告)日：2017-08-29
申请号：US14782967
申请日：2013-06-20
申请人： Spreadtrum Communications (Shanghai) Co., Ltd.
发明人： Xuqiang Shen , Qiang Cao , Xiaojian Dong
IPC分类号： H04L25/02 , H04L27/26 , H04L5/00
CPC分类号： H04L25/0204 , H04L5/0007 , H04L5/0041 , H04L25/022 , H04L25/0224 , H04L25/0226 , H04L25/0232 , H04L27/2657 , H04L27/2662 , H04L27/2672 , H04L27/2675 , H04L27/2695
摘要： The method includes receiving communication signals in a time domain and to aa frequency domain, providing resource blocks in the frequency domain including a first and second resource block, selecting first pilot signals from first resource block and second pilot signals from second resource block, calculating a first average value based on the first pilot signals, calculating a second average value, determining a phase difference between the first and second pilot signals using the first and second average values, adjusting a first phase of first resource block using the phase difference, providing a first waveform using the first resource block with adjusted the first phase and the second resource block, applying a smoothing filter against the first waveform to generate a second waveform, generating a third waveform using at least the first and third set of phase and amplitude differences, and converting third waveform from frequency domain to time domain.

8. 发明授权

US09264189B2 Method and device for detecting downlink control information 有权
标题翻译：检测下行控制信息的方法和装置
公开(公告)号：US09264189B2
公开(公告)日：2016-02-16
申请号：US14338515
申请日：2014-07-23
申请人： Spreadtrum Communications (Shanghai) Co., Ltd.
发明人： Xuqiang Shen , Xiaojian Dong
IPC分类号： H04L5/00 , H04L27/26 , H04W8/00 , H04W52/02 , H04W72/12
CPC分类号： H04L5/00 , H04L1/0038 , H04L5/0091 , H04L27/2676 , H04L27/2679 , H04W8/00 , H04W52/0229 , H04W72/1278 , H04W72/1289 , Y02D70/1262
摘要： A method and device for detecting DCI are provided. The method includes: obtaining intermediate data in DCI blind detection, the intermediate data including descrambled data, decoded data and detected RNTI values; determining data to be processed from the decoded data based on a matching result of the detected RNTI values and configured RNTI values; performing encoding, rate matching and modulation on the data to be processed to obtain modulated data; calculating confidence levels of the configured RNTI values based on the modulated data and the descrambled data; and when a maximum confidence level of the configured RNTI value is greater than a predetermined threshold of confidence level, determining that the data to be processed contains detected DCI. The probability of DCI misdetection may be reduced, and further the accuracy of uplink and downlink data on a mobile terminal and system stability may be ensured.
摘要翻译：提供了一种用于检测DCI的方法和装置。该方法包括：在DCI盲检测中获取中间数据，中间数据包括解扰数据，解码数据和检测到的RNTI值; 基于检测到的RNTI值和配置的RNTI值的匹配结果，从解码数据确定要处理的数据; 对要处理的数据执行编码，速率匹配和调制以获得调制数据; 基于调制数据和解扰数据计算配置的RNTI值的置信水平; 并且当配置的RNTI值的最大置信度水平大于置信水平的预定阈值时，确定要处理的数据包含检测到的DCI。可能会降低DCI错误检测的概率，进一步确保移动终端上下行链路数据的准确性和系统稳定性。

9. 发明申请

US20160043882A1 METHOD OF CHANNEL ESTIMATION BY PHASE ROTATION IN AN ORTHOGONAL FREQUENCY DIVISION MULTIPLEXING (OFDM) SYSTEM 有权
标题翻译：正交频分多址（OFDM）系统中相位转换的信道估计方法
公开(公告)号：US20160043882A1
公开(公告)日：2016-02-11
申请号：US14782967
申请日：2013-06-20
申请人： SPREADTRUM COMMUNICATIONS (SHANGHAI) CO., LTD.
发明人： Xuqiang Shen , Qiang Cao , Xiaojian Dong
IPC分类号： H04L25/02 , H04L5/00
CPC分类号： H04L25/0204 , H04L5/0007 , H04L5/0041 , H04L25/022 , H04L25/0224 , H04L25/0226 , H04L25/0232 , H04L27/2657 , H04L27/2662 , H04L27/2672 , H04L27/2675 , H04L27/2695
摘要： The method includes receiving communication signals in a time domain and to a frequency domain, providing resource blocks in the frequency domain including a first and second resource block, selecting first pilot signals from first resource block and second pilot signals from second resource block, calculating a first average value based on the first pilot signals, calculating a second average value, determining a phase difference between the first and second pilot signals using the first and second average values, adjusting a first phase of first resource block using the phase difference, providing a first waveform using the first resource block with adjusted the first phase and the second resource block, applying a smoothing filter against the first waveform to generate a second waveform, generating a third waveform using at least the first and third set of phase and amplitude differences, and converting third waveform from frequency domain to time domain.
摘要翻译：该方法包括在时域和频域中接收通信信号，在包括第一和第二资源块的频域中提供资源块，从第一资源块中选择第一导频信号和从第二资源块中选择第二导频信号，基于第一导频信号的第一平均值，计算第二平均值，使用第一和第二平均值确定第一和第二导频信号之间的相位差，使用相位差调整第一资源块的第一相位，提供使用调整了第一相位和第二资源块的第一资源块的第一波形，对第一波形施加平滑滤波器以产生第二波形，使用至少第一和第三组相位和幅度差产生第三波形，并将第三波形从频域转换为时域。

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