公开(公告)号：US5412658A

公开(公告)日：1995-05-02

申请号：US142553

申请日：1993-10-22

申请人： Hamilton W. Arnold ,  Daniel M. Devasirvathan ,  Nelson R. Sollenberger ,  Larrie G. Sutliff ,  Vijay K. Varma

发明人： Hamilton W. Arnold ,  Daniel M. Devasirvathan ,  Nelson R. Sollenberger ,  Larrie G. Sutliff ,  Vijay K. Varma

IPC分类号： H04W16/14 ,  H04Q7/00 ,  H04B7/26 ,  H04B15/00

CPC分类号： H04W16/14

摘要： A system for spectrum sharing between a point-to-point microwave system and a TDM/TDMA wireless communications system in a common geographical area is described. Each transmitter/receiver in the point-to-point microwave system transmits, in addition to its normal information signal, a beacon signal which is uniquely associated with the receiver receive frequency. In selecting uplink and downlink frequencies for port assignment, each port monitors the beacon frequencies and selects as uplink and downlink frequencies, frequencies which associated beacons fall below a predetermined threshold. Similarly, before accessing the wireless communications system through a selected port, a portable monitors the beacons associated with the selected port's uplink frequency. If the beacon associated with the uplink frequency exceeds a threshold, the portable selects an alternate port through which to access the network. Also, during a call an emergency link transfer to another port is made if the monitored beacon corresponding to the portable's uplink frequency rises above the threshold.

摘要翻译： 描述了在公共地理区域中的点对点微波系统和TDM / TDMA无线通信系统之间的频谱共享系统。 点对点微波系统中的每个发射机/接收机除了正常的信息信号之外还发送与接收机接收频率唯一相关联的信标信号。 在选择用于端口分配的上行链路和下行链路频率时，每个端口监视信标频率并选择上行链路和下行链路频率，相关信标的频率低于预定阈值。 类似地，在通过所选择的端口访问无线通信系统之前，便携式监视与所选端口的上行链路频率相关联的信标。 如果与上行链路频率相关联的信标超过阈值，则便携式选择用于接入网络的备用端口。 此外，在呼叫期间，如果与便携式上行链路频率对应的被监视信标上升到阈值以上，则进行到另一端口的紧急链路传送。

公开(公告)号：US09172429B2

公开(公告)日：2015-10-27

申请号：US11074221

申请日：2005-03-07

申请人： Irwin Gerszberg ,  Paul Shala Henry ,  Larrie G. Sutliff

发明人： Irwin Gerszberg ,  Paul Shala Henry ,  Larrie G. Sutliff

IPC分类号： H04B3/46 ,  H04B17/00 ,  H04Q1/20 ,  H04B3/54

CPC分类号： H04B3/54 ,  H04B15/00 ,  H04B2203/5425 ,  H04B2203/5441 ,  H04B2203/5458 ,  H04B2203/5483

摘要： A broadband powerline communication system makes use of knowledge of the spectrum characteristics of a local radio environment in order to improve system performance. A determination is made of the spectrum characteristics of a radio environment in the vicinity of the broadband powerline communication system that is transmitting data on modulated carrier frequencies. In order to avoid interference, certain ones of the carrier frequencies otherwise used by the broadband powerline communication system may be selectively masked based on the determination. The spectrum characteristics may be determined 1) in advance and used to compile a configuration database comprising frequency masking parameters; 2) by monitoring the local radio environment using the transmitter/receiver nodes of the system; or 3) based upon receipt of an indication from a conflicting user that the user is experiencing interference. Various combinations of these spectrum characteristic determination techniques may also be used.

摘要翻译： 宽带电力线通信系统利用本地无线电环境的频谱特性的知识，以提高系统性能。 确定在调制载波频率上发送数据的宽带电力线通信系统附近的无线电环境的频谱特性。 为了避免干扰，可以基于该确定来选择性地屏蔽由宽带电力线通信系统使用的某些载波频率。 频谱特性可以预先确定1）并用于编译包括频率掩蔽参数的配置数据库; 2）通过使用系统的发射机/接收机节点监视本地无线电环境; 或3）基于从冲突用户接收到用户正在经历干扰的指示。 也可以使用这些光谱特征确定技术的各种组合。

公开(公告)号：US5361258A

公开(公告)日：1994-11-01

申请号：US142533

申请日：1993-10-22

申请人： Hamilton W. Arnold ,  Daniel M. Devasirvathan ,  Nelson R. Sollenberger ,  Larrie G. Sutliff ,  Vijay K. Varma

发明人： Hamilton W. Arnold ,  Daniel M. Devasirvathan ,  Nelson R. Sollenberger ,  Larrie G. Sutliff ,  Vijay K. Varma

IPC分类号： H04B7/26 ,  H04W16/14 ,  H04W16/32 ,  H04Q7/00 ,  H04B15/00

CPC分类号： H04W16/14 ,  H04B7/2621 ,  H04W16/32

摘要： A system for spectrum sharing between a point-to-point microwave system and a TDM/TDMA wireless communications system in a common geographical area is described. Each transmitter/receiver in the point-to-point microwave system transmits, in addition to its normal information signal, a beacon signal which is uniquely associated with the receiver receive frequency. In selecting uplink and downlink frequencies for port assignment, each port monitors the beacon frequencies and selects as uplink and downlink frequencies, frequencies which associated beacons fall below a predetermined threshold. Similarly, before accessing the wireless communications system through a selected port, a portable monitors the beacons associated with the selected port's uplink frequency. If the beacon associated with the uplink frequency exceeds a threshold, the portable selects an alternate port through which to access the network. Also, during a call an emergency link transfer to another port is made if the monitored beacon corresponding to the portable's uplink frequency rises above the threshold.

摘要翻译： 描述了在公共地理区域中的点对点微波系统和TDM / TDMA无线通信系统之间的频谱共享系统。 点对点微波系统中的每个发射机/接收机除了正常的信息信号之外还发送与接收机接收频率唯一相关联的信标信号。 在选择用于端口分配的上行链路和下行链路频率时，每个端口监视信标频率并选择上行链路和下行链路频率，相关信标的频率低于预定阈值。 类似地，在通过所选择的端口访问无线通信系统之前，便携式监视与所选端口的上行链路频率相关联的信标。 如果与上行链路频率相关联的信标超过阈值，则便携式选择用于接入网络的备用端口。 此外，在呼叫期间，如果与便携式上行链路频率对应的被监视信标上升到阈值以上，则进行到另一端口的紧急链路传送。