公开(公告)号：US06778588B2

公开(公告)日：2004-08-17

申请号：US10255334

申请日：2002-09-25

申请人： Feng Li ,  Tiezhu Xu ,  Yusong He ,  Xiaolong Ran

发明人： Feng Li ,  Tiezhu Xu ,  Yusong He ,  Xiaolong Ran

IPC分类号： H04B169

CPC分类号： H04W52/32 ,  H04B1/70758 ,  H04B1/7077 ,  H04B1/7083 ,  H04W52/50 ,  H04W56/00

摘要： The invention relates to a cell initial search method for user equipment (UE) in a CDMA digital cellular mobile communication system. The method includes: a UE after selecting a working frequency point, obtains downlink synchronization with the base station; and corrects carrier deviation between the UE and the base station. The downlink synchronization includes: deciding a range of downlink training sequence timeslot (DwPTS) based on training sequence power characteristic window value method; solving correlation of received data and training sequence in the range to obtain accurate receiving position of a UE. The correction of carrier deviation between a UE and the base station includes: estimating carrier deviation between a UE and the base station by software, recovering carrier frequency difference by using decision and feedback method to adjust hardware and carrier deviation correction method based on joint detection to correct carrier deviation.

摘要翻译： 本发明涉及CDMA数字蜂窝移动通信系统中的用户设备（UE）的小区初始搜索方法。 该方法包括：UE在选择工作频点后，获得与基站的下行同步; 并修正UE和基站之间的载波偏差。 下行同步包括：基于训练序列功率特征窗值法确定下行训练序列时隙（DwPTS）的范围; 解决接收到的数据与训练序列的相关性，以获得UE的准确接收位置。 UE和基站之间的载波偏差校正包括：通过软件估计UE与基站之间的载波偏差，通过使用决策和反馈方法来恢复载波频率差，以基于联合检测对硬件和载波偏差校正方法进行调整 正确的载波偏差。

公开(公告)号：US07554955B2

公开(公告)日：2009-06-30

申请号：US11230297

申请日：2005-09-19

申请人： Feng Li ,  Tiezhu Xu ,  Libao Zhang ,  Xiaolong Ran

发明人： Feng Li ,  Tiezhu Xu ,  Libao Zhang ,  Xiaolong Ran

IPC分类号： H04B7/216

CPC分类号： H04B1/70755 ,  H04B1/70754 ,  H04W74/08

摘要： The present invention discloses a method for detecting random access of User Equipment (UE), applicable to a mobile communication system consisting of at least one Base Station (BS) and a group of UEs; wherein the BS and the group of UE use a set of N (N is a positive integer) orthogonal or quasi-orthogonal pseudo-random sequence codes for UEs' random access. The method comprises: BS receiving a random access signal, and making correlation operation of the received signal with each pseudo-random sequence code in said code set successively to obtain a corresponding correlation result window; finding the maximum correlation peak in the correlation result window, and then dividing a correlation peak window and the front-side and rear-side windows thereof; setting one or more thresholds and comparing them with correlation results in the correlation peak window or in the correlation peak window and the front-side and rear-side windows; when conditions are satisfied, determining that the pseudo-random sequence code involved in the above correlation operation is the pseudo-random sequence code selected by the UE randomly accessed at the moment; thereby, detecting each randomly accessed UE.

摘要翻译： 本发明公开了一种用于检测用户设备（UE）的随机接入的方法，该方法适用于由至少一个基站（BS）和一组UE组成的移动通信系统; 其中所述BS和所述UE组为UE随机接入使用一组N（N为正整数）正交或准正交伪随机序列码。 该方法包括：BS接收随机接入信号，并使接收信号与所述码集中的每个伪随机序列码相关操作，以获得相应的相关结果窗口; 找出相关结果窗口中的最大相关峰值，然后除去相关峰值窗口及其前侧和后侧窗口; 设置一个或多个阈值并将它们与相关峰值窗口或相关峰值窗口以及前侧和后侧窗口中的相关结果进行比较; 当满足条件时，确定上述相关操作中涉及的伪随机序列码是由此时随机访问的UE所选择的伪随机序列码; 从而检测每个随机访问的UE。

公开(公告)号：US06961365B2

公开(公告)日：2005-11-01

申请号：US10268349

申请日：2002-10-09

申请人： Feng Li ,  Yusong He ,  Tiezhu Xu

发明人： Feng Li ,  Yusong He ,  Tiezhu Xu

IPC分类号： H04B1/7105 ,  H04B7/02 ,  H04J13/00 ,  H04B1/69 ,  H04B7/216

CPC分类号： H04B1/7105

摘要： The invention discloses to a signal processing method for user equipment in a CDMA mobile communication system. The signal processing method is a combination of time diversity and joint detection in order to raise diversity gain of a receiver. The method comprises: sample a received signal on time domain, estimate spatial channel impulse response value, obtain matrixes, constitute a system matrix, perform joint detection algorithm and obtain an estimated value of original sending data. When the method is used in a mobile user equipment, the uplink and downlink performance unmatched problem can be solved, using same frequency multiplexing can be reached and the joint detection algorithm is a simpler one. The method also can be used in a base station.

摘要翻译： 本发明公开了一种CDMA移动通信系统中用户设备的信号处理方法。 信号处理方法是时间分集和联合检测的组合，以便提高接收机的分集增益。 该方法包括：对时域上的接收信号进行采样，估计空间信道脉冲响应值，获得矩阵，构成系统矩阵，执行联合检测算法，获得原始发送数据的估计值。 当在移动用户设备中使用该方法时，可以解决上行和下行性能不匹配的问题，可以使用相同的频率复用，并且联合检测算法更简单。 该方法也可以在基站中使用。

公开(公告)号：US20060050775A1

公开(公告)日：2006-03-09

申请号：US11230297

申请日：2005-09-19

申请人： Feng Li ,  Tiezhu Xu ,  Libao Zhang ,  Xiaolong Ran

发明人： Feng Li ,  Tiezhu Xu ,  Libao Zhang ,  Xiaolong Ran

IPC分类号： H04B1/707

CPC分类号： H04B1/70755 ,  H04B1/70754 ,  H04W74/08

摘要： The present invention discloses a method for detecting random access of User Equipment (UE), applicable to a mobile communication system consisting of at least one Base Station (BS) and a group of UEs; wherein the BS and the group of UE use a set of N (N is a positive integer) orthogonal or quasi-orthogonal pseudo-random sequence codes for UEs' random access. The method comprises: BS receiving a random access signal, and making correlation operation of the received signal with each pseudo-random sequence code in said code set successively to obtain a corresponding correlation result window; finding the maximum correlation peak in the correlation result window, and then dividing a correlation peak window and the front-side and rear-side windows thereof; setting one or more thresholds and comparing them with correlation results in the correlation peak window or in the correlation peak window and the front-side and rear-side windows; when conditions are satisfied, determining that the pseudo-random sequence code involved in the above correlation operation is the pseudo-random sequence code selected by the UE randomly accessed at the moment; thereby, detecting each randomly accessed UE.

公开(公告)号：US07899014B2

公开(公告)日：2011-03-01

申请号：US11915049

申请日：2006-04-26

申请人： Feng Li ,  Guiliang Yang ,  Yuanxin Qiao ,  Tiezhu Xu

发明人： Feng Li ,  Guiliang Yang ,  Yuanxin Qiao ,  Tiezhu Xu

IPC分类号： H04W4/00 ,  H04B7/216 ,  H04B1/00

CPC分类号： H04B1/7105 ,  H04L5/0003 ,  H04L25/0212 ,  H04L25/03006

摘要： The present invention discloses a method for determining user channel impulse response in the TD-SCDMA system, including: setting one or more than one synchronous ID code and establishing corresponding relations between channel estimation parameters of each user and the synchronous ID code and a sub-frame number of a sub-frame transmitting the synchronous ID code; transmitting, by each user, a corresponding synchronous ID code in a sub-frame identified by a sub-frame number corresponding to channel estimation parameters according to the relations established in step A, wherein timing advance of transmitting the synchronous ID code is the same with that of transmitting uplink service data of the user; at Node B, continuing to detect whether there is the synchronous ID code in received signals, if there is one or more than one synchronous ID code, determining the channel estimation parameters of the user transmitting the synchronous ID code according to the detected synchronous ID code, sub-frame number of the current sub-frame and the corresponding relations established in step A; and at Node B, computing the channel impulse response of the user according to the determined channel estimation parameters and arriving time of the detected synchronous ID code.

摘要翻译： 本发明公开了一种在TD-SCDMA系统中确定用户信道脉冲响应的方法，包括：设置一个或多个同步ID码，并建立每个用户的信道估计参数与同步ID码之间的对应关系， 发送同步ID码的子帧的帧号; 根据步骤A中建立的关系，由每个用户发送由对应于信道估计参数的子帧号标识的子帧中的对应同步ID码，其中发送同步ID码的定时提前与 发送用户的上行业务数据; 在节点B处，如果存在一个或多个同步ID码，则继续检测接收到的信号中是否存在同步ID码，根据检测到的同步ID码确定用户发送同步ID码的信道估计参数 ，当前子帧的子帧号和步骤A中建立的对应关系; 并且在节点B处，根据确定的信道估计参数和检测到的同步ID码的到达时间来计算用户的信道脉冲响应。

公开(公告)号：US20080278374A1

公开(公告)日：2008-11-13

申请号：US11913775

申请日：2006-04-26

申请人： Tiezhu Xu ,  Feng Li ,  Shaoli Kang

发明人： Tiezhu Xu ,  Feng Li ,  Shaoli Kang

IPC分类号： H01Q25/00 ,  H04B1/06 ,  H01Q21/29

CPC分类号： H01Q3/242 ,  H01Q21/205

摘要： The present invention discloses a method for dynamically selecting antenna array architecture, deciding a basic antenna array, determining a number of required array elements, selecting determined number of array elements from all the array elements in the basic antenna array to form an antenna array architecture and receiving and detecting signals with the current antenna array architecture, the method further including: determining whether transmission time intervals and/or slot positions of received signals change, if so, re-selecting the determined number of array elements from all the array elements in the basic antenna array to form a new antenna array architecture and receiving and detecting signals with the new antenna array architecture, otherwise, continuing to determine. According to this method, not only the realization is simple but also that each array elements in the antenna array can receive arriving signals more reasonably so that the reliability of the antenna array to receive signals is improved.

摘要翻译： 本发明公开了一种用于动态选择天线阵列架构，确定基本天线阵列，确定所需阵列元件数量的方法，从基本天线阵列中的所有阵列元素中选择确定数量的阵列元件以形成天线阵列结构， 接收和检测具有当前天线阵列结构的信号，所述方法还包括：确定接收信号的传输时间间隔和/或时隙位置是否改变，如果是，则从所有阵列元素重新选择所确定数量的阵列元素 基本天线阵列形成新的天线阵列结构，并采用新天线阵列结构接收和检测信号，否则继续确定。 根据该方法，不仅实现简单，而且天线阵列中的每个阵列元件可以更合理地接收到达信号，从而提高天线阵列对接收信号的可靠性。

公开(公告)号：US20080259892A1

公开(公告)日：2008-10-23

申请号：US11915049

申请日：2006-04-26

申请人： Feng Li ,  Guiliang Yang ,  Yuanxin Qiao ,  Tiezhu Xu

发明人： Feng Li ,  Guiliang Yang ,  Yuanxin Qiao ,  Tiezhu Xu

IPC分类号： H04B7/216

CPC分类号： H04B1/7105 ,  H04L5/0003 ,  H04L25/0212 ,  H04L25/03006

摘要： The present invention discloses a method for determining user channel impulse response in the TD-SCDMA system, including: setting one or more than one synchronous ID code and establishing corresponding relations between channel estimation parameters of each user and the synchronous ID code and a sub-frame number of a sub-frame transmitting the synchronous ID code; transmitting, by each user, a corresponding synchronous ID code in a sub-frame identified by a sub-frame number corresponding to channel estimation parameters according to the relations established in step A, wherein timing advance of transmitting the synchronous ID code is the same with that of transmitting uplink service data of the user; at Node B, continuing to detect whether there is the synchronous ID code in received signals, if there is one or more than one synchronous ID code, determining the channel estimation parameters of the user transmitting the synchronous ID code according to the detected synchronous ID code, sub-frame number of the current sub-frame and the corresponding relations established in step A; and at Node B, computing the channel impulse response of the user according to the determined channel estimation parameters and arriving time of the detected synchronous ID code.

摘要翻译： 本发明公开了一种在TD-SCDMA系统中确定用户信道脉冲响应的方法，包括：设置一个或多个同步ID码，并建立每个用户的信道估计参数与同步ID码之间的对应关系， 发送同步ID码的子帧的帧号; 根据步骤A中建立的关系，由每个用户发送由对应于信道估计参数的子帧号标识的子帧中的对应同步ID码，其中发送同步ID码的定时提前与 发送用户的上行业务数据; 在节点B处，如果存在一个或多个同步ID码，则继续检测接收到的信号中是否存在同步ID码，根据检测到的同步ID码确定用户发送同步ID码的信道估计参数 ，当前子帧的子帧号和步骤A中建立的对应关系; 并且在节点B处，根据确定的信道估计参数和检测到的同步ID码的到达时间来计算用户的信道脉冲响应。

公开(公告)号：US08116794B2

公开(公告)日：2012-02-14

申请号：US11969790

申请日：2008-01-04

申请人： Feng Li ,  Jianxun Sun ,  Yingmin Wang ,  Guiliang Yang ,  Tiezhu Xu

发明人： Feng Li ,  Jianxun Sun ,  Yingmin Wang ,  Guiliang Yang ,  Tiezhu Xu

IPC分类号： H04B7/00

CPC分类号： H04W28/18 ,  H04B1/7105 ,  H04B2201/70702 ,  H04B2201/709709 ,  H04L25/0202 ,  H04W24/00

摘要： Finding a channel impulse response estimation window in a current cell for at least one mobile terminal in a neighboring cell is disclosed. This can serve to mitigate interference caused by mobile terminals in neighboring cells in and among communications ongoing in a current cell. In one example, a method for A method for determining such a channel impulse response estimation window includes presetting, in the neighboring cell, at least two channel impulse response peak locations of respective mobile terminals in first and second predetermined periods with a predetermined peak location change pattern, and then upon receiving communication from a mobile terminal of the neighboring cell, analyzing channel impulse responses to identify the peak location change pattern with regard to first and second peak locations. The method further includes identifying a variation range for a channel impulse response of a primary path of the mobile terminal, and determining a channel impulse response estimation window for the mobile terminal based on the identified variation range and a preferred estimation window size.

摘要翻译： 公开了在相邻小区中的至少一个移动终端的当前小区中的信道脉冲响应估计窗口。 这可以用于减轻当前小区中正在进行的通信中的相邻小区中的移动终端造成的干扰。 在一个示例中，用于确定这样的信道脉冲响应估计窗口的A方法的方法包括在相邻小区中预定在第一和第二预定时段中各个移动终端的至少两个信道脉冲响应峰值位置具有预定的峰值位置变化 然后在从相邻小区的移动终端接收到通信时，分析信道脉冲响应以识别关于第一和第二峰位置的峰位置改变模式。 该方法还包括识别移动终端的主要路径的信道脉冲响应的变化范围，以及基于所识别的变化范围和优选估计窗口大小来确定移动终端的信道脉冲响应估计窗口。

公开(公告)号：US08111641B2

公开(公告)日：2012-02-07

申请号：US11915057

申请日：2006-04-26

申请人： Feng Li ,  Guilang Yang ,  Tiezhu Xu ,  Ke Wang

发明人： Feng Li ,  Guilang Yang ,  Tiezhu Xu ,  Ke Wang

IPC分类号： H04J3/00

CPC分类号： H04B1/7105 ,  H04B2201/70702

摘要： A method for performing multi-user joint-detection in a neighboring cell in a TDD-CDMA system presets slot types and includes: a network device configuring a slot type of each uplink slot in its administrated cells and a base station of each cell obtaining a slot type of each uplink slot in a neighboring cell from the network device; the network device configuring for each user a slot for transmitting uplink data and a midamble and channelization code to be used according to the slot type of each uplink slot and a service type of each user in each cell; each user in each cell using the configured midamble and channelization code to transmit uplink data in the configured slot; and the base station detecting activated code channels in the neighboring cell according to the received uplink data transmitted by users in the neighboring cell and obtaining midamble used by each user in the neighboring cell according to the channeliazation codes of the activated code channels and according to the slot type of each uplink slot in the neighboring cell so that the base station may perform the multi-user joint-detection in the neighboring cell.

摘要翻译： 一种用于在TDD-CDMA系统中在相邻小区中执行多用户联合检测的方法预设时隙类型，并且包括：配置其管理小区中的每个上行链路时隙的时隙类型的网络设备，以及每个小区的基站获得 来自网络设备的相邻小区中的每个上行链路时隙的时隙类型; 所述网络设备根据每个上行链路时隙的时隙类型和每个小区中的每个用户的服务类型，为每个用户配置用于发送上行链路数据的时隙和要使用的中继码和信道化码; 每个小区中的每个用户使用配置的中间码和信道化码来在配置的时隙中传输上行链路数据; 并且所述基站根据所述相邻小区中的用户发送的接收到的上行链路数据来检测所述相邻小区中的激活码信道，并根据所述激活码信道的频道码获得所述相邻小区中的每个用户使用的中间码，并且根据 相邻小区中的每个上行链路时隙的时隙类型，使得基站可以在相邻小区中执行多用户联合检测。

公开(公告)号：US20080205305A1

公开(公告)日：2008-08-28

申请号：US11915057

申请日：2006-04-26

申请人： Feng Li ,  Guilang Yang ,  Tiezhu Xu ,  Ke Wang

发明人： Feng Li ,  Guilang Yang ,  Tiezhu Xu ,  Ke Wang

IPC分类号： H04J3/00

CPC分类号： H04B1/7105 ,  H04B2201/70702

摘要： A method for performing multi-user joint-detection in a neighboring cell in a TDD-CDMA system presets slot types and includes: a network device configuring a slot type of each uplink slot in its administrated cells and a base station of each cell obtaining a slot type of each uplink slot in a neighboring cell from the network device; the network device configuring for each user a slot for transmitting uplink data and a midamble and channelization code to be used according to the slot type of each uplink slot and a service type of each user in each cell; each user in each cell using the configured midamble and channelization code to transmit uplink data in the configured slot; and the base station detecting activated code channels in the neighboring cell according to the received uplink data transmitted by users in the neighboring cell and obtaining midamble used by each user in the neighboring cell according to the channeliazation codes of the activated code channels and according to the slot type of each uplink slot in the neighboring cell so that the base station may perform the multi-user joint-detection in the neighboring cell.

摘要翻译： 一种用于在TDD-CDMA系统中在相邻小区中执行多用户联合检测的方法预设时隙类型，并且包括：配置其管理小区中的每个上行链路时隙的时隙类型的网络设备，以及每个小区的基站获得 来自网络设备的相邻小区中的每个上行链路时隙的时隙类型; 所述网络设备根据每个上行链路时隙的时隙类型和每个小区中的每个用户的服务类型，为每个用户配置用于发送上行链路数据的时隙和要使用的中继码和信道化码; 每个小区中的每个用户使用配置的中间码和信道化码来在配置的时隙中传输上行链路数据; 并且所述基站根据所述相邻小区中的用户发送的接收到的上行链路数据来检测所述相邻小区中的激活码信道，并根据所述激活码信道的频道码获得所述相邻小区中的每个用户使用的中间码，并且根据 相邻小区中的每个上行链路时隙的时隙类型，使得基站可以在相邻小区中执行多用户联合检测。