公开(公告)号：US20080273511A1

公开(公告)日：2008-11-06

申请号：US11916196

申请日：2006-05-17

申请人： Yingmin Wang ,  Nan Zhong

发明人： Yingmin Wang ,  Nan Zhong

IPC分类号： H04B7/216

CPC分类号： H04B1/7105 ,  H04B2201/70702 ,  H04L25/0204

摘要： A multi-cell joint-detection method in a time-slotted CDMA system includes: performing a multiple code set channel estimation on received signal data and obtaining channel estimation results of a home cell and of neighboring cells; adjusting the channel estimation results of the home cell and/or neighboring cells or the estimation result of a combined channel response according to a comparative delay difference between signals of users in different cells; and performing a joint-detection according to the estimation result of the combined channel response obtained by adjusting the channel estimation results of the users in different cells or according to the estimation result of the combined channel response. The MAI between neighboring universal-frequency cells having comparative delays and especially large comparative delays is greatly suppressed and the performance of the time-slotted CDMA system when working in neighboring universal-frequency cells is improved.

摘要翻译： 时隙CDMA系统中的多小区联合检测方法包括：对接收到的信号数据执行多码集信道估计，并获得家庭小区和相邻小区的信道估计结果; 根据不同小区中的用户信号之间的比较延迟差来调整家庭小区和/或相邻小区的信道估计结果或组合信道响应的估计结果; 以及根据通过调整不同小区中的用户的信道估计结果而获得的组合信道响应的估计结果，或根据组合信道响应的估计结果，进行联合检测。 具有相对延迟和特别大的比较延迟的相邻通用频率小区之间的MAI被大大抑制，并且在相邻通用频率小区中工作时时隙CDMA系统的性能得到改善。

公开(公告)号：US20080102836A1

公开(公告)日：2008-05-01

申请号：US11958261

申请日：2007-12-17

申请人： Yingmin Wang ,  Guiliang Yang ,  Yuanxin Qiao

发明人： Yingmin Wang ,  Guiliang Yang ,  Yuanxin Qiao

IPC分类号： H04Q7/20

CPC分类号： H04W36/30 ,  H04B1/7105

摘要： A method is disclosed for performing a handoff in a telecommunication system. The method comprises: performing a first multi-cell joint detection process for decoding the communications within the home cell when a mobile terminal enters a handoff region between a home cell and one or more neighboring cells; performing a handoff process when the mobile terminal is in the home cell to join a target neighboring cell; and performing a second multi-cell joint detection process for decoding the communications between the mobile terminal and the target neighboring cell. In this manner, decoding for uplink and/or downlink communications is improved, and throughout and performance of the telecommunication system is enhanced.

摘要翻译： 公开了一种用于在电信系统中执行切换的方法。 该方法包括：当移动终端进入家庭小区与一个或多个相邻小区之间的切换区域时，执行用于对家庭小区内的通信进行解码的第一多小区联合检测处理; 当移动终端在家庭小区中加入目标邻近小区时执行切换过程; 以及执行用于解码所述移动终端与所述目标邻近小区之间的通信的第二多小区联合检测处理。 以这种方式，提高了用于上行链路和/或下行链路通信的解码，并且提高了电信系统的整个和性能。

公开(公告)号：US08331247B2

公开(公告)日：2012-12-11

申请号：US11914358

申请日：2006-05-10

申请人： Feng Li ,  Guiliang Yang ,  Shaoli Kang

发明人： Feng Li ,  Guiliang Yang ,  Shaoli Kang

IPC分类号： G08C15/00

CPC分类号： H04J13/16 ,  H04J13/0044 ,  H04W8/005 ,  H04W24/00 ,  H04W72/0466

摘要： The present invention discloses a method for code channel allocation and related multiuser detection in a wireless communication system. The method for code channel allocation includes: establishing a relation between at least one channel estimation window and a channelization code, wherein the at least one channel estimation window corresponding to the channelization code includes the channel estimation windows corresponding to all the spread spectrum code branches of a node in which the channelization code exists; and performing code channel allocation according to the relation established. In the method for code channel allocation of the invention, there exists a one-to-many relation between the channelization code/channelization code number established and the at least one channel estimation window. Therefore, during the multiuser detection, the channelization code/channelization code number determined via the at least one channel estimation window activated is unique. Thereby, the efficiency of the multiuser detection process may be increased.

摘要翻译： 本发明公开了一种用于无线通信系统中的码信道分配和相关多用户检测的方法。 用于码信道分配的方法包括：建立至少一个信道估计窗口和信道化码之间的关系，其中对应于信道化码的至少一个信道估计窗口包括对应于所有扩频码分支的信道估计窗口 存在信道化代码的节点; 并根据建立的关系执行代码信道分配。 在本发明的编码信道分配方法中，在所建立的信道化码/信道化码数与至少一个信道估计窗口之间存在一对多的关系。 因此，在多用户检测期间，通过激活的至少一个信道估计窗口确定的信道化码/信道化码号是唯一的。 由此，可以提高多用户检测处理的效率。

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：US07917165B2

公开(公告)日：2011-03-29

申请号：US11915103

申请日：2006-05-15

申请人： Jianxun Sun ,  Tiezhu Xu

发明人： Jianxun Sun ,  Tiezhu Xu

IPC分类号： H04B7/00

CPC分类号： H04W52/346

摘要： The present invention discloses a power control method for a base station, including: adjusting, by the base station, a transmit power of a code-channel occupied by a terminal according to a power control command from the terminal; determining a permitted minimum code-channel power according to an adjusted transmit power of the code-channel occupied by the terminal; correcting the transmit power of the code-channel occupied by the terminal according to the minimum code-channel power; and transmitting signals to the terminal according to a corrected transmit power of the code-channel occupied by each terminal. By the present invention, the signal power difference between different users is controlled, the stability of the wireless link is improved, and the quality of system communication is guaranteed.

摘要翻译： 本发明公开了一种基站的功率控制方法，包括：基站根据来自终端的功率控制命令调整终端占用的码信道的发射功率; 根据由所述终端占用的所述码信道的经调整的发射功率确定允许的最小码信道功率; 根据最小码信道功率校正终端占用的码信道的发射功率; 以及根据每个终端所占用的码信道的校正发送功率向终端发送信号。 通过本发明，控制不同用户之间的信号功率差异，提高无线链路的稳定性，保证系统通信的质量。

公开(公告)号：US07697569B2

公开(公告)日：2010-04-13

申请号：US11916186

申请日：2006-06-02

申请人： Feng Li ,  Yingmin Wang ,  Nan Zhong ,  Guiliang Yang

发明人： Feng Li ,  Yingmin Wang ,  Nan Zhong ,  Guiliang Yang

IPC分类号： H04J13/00

CPC分类号： H04L25/0228 ,  H04B1/7107 ,  H04L25/0204

摘要： A multi-code-set channel estimation method in a time-slot CDMA system having steps of: A. performing uni-code-set channel estimations and obtaining channel estimation result; B. extracting a maximum interference tap from the channel estimation result; C. reproducing interference components suffered respectively by response signals corresponding respectively to the plurality of code-sets from the maximum interference tap; D. canceling the interference components, and obtaining a pure channel estimation result of a signal corresponding to each code-set; E. determining whether a predetermined number of iterations has been performed, if so, outputting the result of each uni-code-set channel estimation; otherwise, taking the pure channel estimation result of the signal corresponding to each code-set as the channel estimation result of the code-set to be processed in the next iteration, and returning to step B. Due to the present invention, a multi-code-set joint channel estimation with high performance can be implemented simply and effectively.

摘要翻译： 一种具有以下步骤的时隙CDMA系统中的多码集信道估计方法：A.执行单码组信道估计并获得信道估计结果; B.从信道估计结果中提取最大干扰抽头; C.分别通过来自最大干扰抽头分别对应于多个代码集的响应信号来再现干扰分量; D.消除干扰分量，并获得与每个码集相对应的信号的纯信道估计结果; E.确定是否已经执行了预定数量的迭代，如果是，则输出每个单码组信道估计的结果; 否则，将与每个码集相对应的信号的纯信道估计结果作为要在下一次迭代中处理的码集的信道估计结果，并返回到步骤B.由于本发明， 具有高性能的码集联合信道估计可以简单有效地实现。