公开(公告)号：US20060050662A1

公开(公告)日：2006-03-09

申请号：US11159345

申请日：2005-06-23

申请人： Khurram Rizvi ,  Yuk Chow ,  Tomoya Horiguchi

发明人： Khurram Rizvi ,  Yuk Chow ,  Tomoya Horiguchi

IPC分类号： H04B7/216

CPC分类号： H04J13/0003 ,  H04B1/7105 ,  H04J13/0044

摘要： The present invention relates to wireless communication between a mobile terminal and a base station, and the use of interference cancellation in the uplink. The present invention is particularly but not exclusively concerned with 3G or UTRAN applications. In general terms the present invention provides a method of improving the performance of a CDMA based wireless network, such as a 3G cellular network for example. Interference cancellation is effectively performed earlier by using the channel request such as a reservation packet from a mobile terminal to estimate interference from that mobile on existing mobile users and interference on the mobile from existing mobile users, by determining the relative transmission timing of the new mobiles channel request compared with the transmission timings of the existing mobiles. This allows the base station to determine the cross-correlation between the codes already assigned to the existing users and the code to be allocated to the new user in order to determine an interference measure. This interference can then be cancelled from the new mobile when its data packets are received.

摘要翻译： 本发明涉及移动终端与基站之间的无线通信，以及在上行链路中使用干扰消除。 本发明特别但不排他地涉及3G或UTRAN应用。 一般来说，本发明提供了一种改进例如3G蜂窝网络的基于CDMA的无线网络的性能的方法。 通过使用诸如来自移动终端的预留分组的信道请求，通过确定新移动台的相对传输定时来早期有效地执行干扰消除，以通过确定来自现有移动用户的来自该移动的现有移动用户的干扰和对现有移动用户对移动台的干扰 信道请求与现有手机的传输定时相比。 这允许基站确定已经分配给现有用户的代码与要分配给新用户的代码之间的互相关，以便确定干扰措施。 然后，当其接收到数据分组时，可以从新的移动台取消该干扰。

公开(公告)号：US20050213529A1

公开(公告)日：2005-09-29

申请号：US11033752

申请日：2005-01-13

申请人： Yuk Chow ,  Michael Fitton ,  Khurram Rizvi ,  Mohamed Ismail ,  Yan Bian

发明人： Yuk Chow ,  Michael Fitton ,  Khurram Rizvi ,  Mohamed Ismail ,  Yan Bian

IPC分类号： H04B1/707 ,  H04B7/216

CPC分类号： H04B1/711 ,  H04B2201/70701

摘要： A receiver for receiving a CDMA signal comprises a common channel interference cancellation facility operable to cancel common channel interference by applying a common channel interference estimate to the received signal through a weighted hybrid of parallel and serial interference cancellation, and a physical channel self-interference cancellation facility operable to cancel physical channel self-interference by applying an interference estimate to the received signal through a weighted hybrid of parallel and serial interference cancellation.

摘要翻译： 用于接收CDMA信号的接收机包括公共信道干扰消除设备，其可操作以通过并行和串行干扰消除的加权混合以及物理信道自干扰消除对接收到的信号应用公共信道干扰估计来消除共同信道干扰 该设施可操作以通过并行和串行干扰消除的加权混合来对接收的信号应用干扰估计来消除物理信道自身干扰。

公开(公告)号：US20060281493A1

公开(公告)日：2006-12-14

申请号：US11407974

申请日：2006-04-21

申请人： Dharmayashdev Basgeet ,  Khurram Rizvi ,  Yuk Chow

发明人： Dharmayashdev Basgeet ,  Khurram Rizvi ,  Yuk Chow

IPC分类号： H04B1/38

CPC分类号： H04W16/26 ,  H04B7/2606 ,  H04L12/4625 ,  H04W16/30

摘要： A communication network comprises at least a first region serviced by a base station, and further comprises a plurality of bridging stations deployed around the base station so defining a circumference about said base station. Each bridging station comprises one or more directional antennas operable to generate a coverage area lying predominantly outside said circumference, so forming in operation an inner zone within said circumference wherein bridging station sensitivity and signal strength is significantly lower than that of the base station.

摘要翻译： 通信网络至少包括由基站服务的第一区域，并且还包括围绕基站部署的多个桥接站，从而限定围绕所述基站的圆周。 每个桥接站包括一个或多个定向天线，其可操作以产生主要位于所述圆周外部的覆盖区域，从而在所述圆周内形成内部区域，其中桥接站灵敏度和信号强度明显低于基站。

公开(公告)号：US20060280147A1

公开(公告)日：2006-12-14

申请号：US11412942

申请日：2006-04-28

申请人： Khurram Rizvi ,  Yuk Chow ,  Dharmayashdev Basgeet

发明人： Khurram Rizvi ,  Yuk Chow ,  Dharmayashdev Basgeet

IPC分类号： H04B7/216

CPC分类号： H04W16/12 ,  H04W16/32

摘要： A communication network comprises at least a first region serviced by a base station. This region also comprises a plurality of bridging stations deployed around the base station, so defining a circumference around it. Each bridging station comprises one or more directional antennas operable to generate a coverage area lying predominantly outside said circumference. The effect is to form, in operation, an outer zone predominantly outside said circumference serviced by said bridging stations, and an inner zone within said circumference serviced by said base station. For communications with the outer zone, said base station is operable to assign duplicate CDMA spreading codes to mobile stations in respective areas of the outer zone served by bridging stations that experience sufficiently low levels of cross-interference from each other's communications.

摘要翻译： 通信网络至少包括由基站服务的第一区域。 该区域还包括围绕基站部署的多个桥接站，因此限定围绕它的圆周。 每个桥接站包括一个或多个定向天线，其可操作以产生主要位于所述圆周外的覆盖区域。 效果是在操作中形成主要在由所述桥接站服务的所述圆周外部的外部区域以及由所述基站服务的所述圆周内的内部区域。 为了与外部区域进行通信，所述基站可操作以将复制的CDMA扩展码分配给由经历来自彼此通信的足够低的交叉干扰水平的桥接站服务的外部区域的相应区域中的移动站。

公开(公告)号：US20070036123A1

公开(公告)日：2007-02-15

申请号：US11414382

申请日：2006-05-01

申请人： Simon Armour ,  Khurram Rizvi ,  Dharmayashdev Basgeet

发明人： Simon Armour ,  Khurram Rizvi ,  Dharmayashdev Basgeet

IPC分类号： H04B7/208

CPC分类号： H04W16/30 ,  H04B7/2606 ,  H04L5/0007 ,  H04W16/26 ,  H04W72/082 ,  H04W88/04

摘要： A communication network comprises at least a first region serviced by a base station. This region also comprises a plurality of bridging stations deployed around the base station, so defining a circumference around it. Each bridging station comprises one or more directional antennas operable to generate a coverage area lying predominantly outside said circumference. The effect is to form, in operation, an outer zone predominantly outside said circumference serviced by said bridging stations, and an inner zone within said circumference serviced by said base station. For communications with the outer zone, said base station is operable to assign duplicate OFDMA sub-channels to mobile stations in respective areas of the outer zone served by bridging stations that experience sufficiently low levels of cross-interference from each other's communications.

摘要翻译： 通信网络至少包括由基站服务的第一区域。 该区域还包括围绕基站部署的多个桥接站，因此限定围绕它的圆周。 每个桥接站包括一个或多个定向天线，其可操作以产生主要位于所述圆周外的覆盖区域。 效果是在操作中形成主要在由所述桥接站服务的所述圆周外部的外部区域以及由所述基站服务的所述圆周内的内部区域。 为了与外部区域进行通信，所述基站可操作以将重复的OFDMA子信道分配给由经历来自彼此通信的足够低的交叉干扰水平的桥接站服务的外部区域的相应区域中的移动站。