专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明授权

US5642405A Cellular communications system with centralized base stations and distributed antenna units 失效
标题翻译：具有集中基站和分布式天线单元的蜂窝通信系统
公开(公告)号：US5642405A
公开(公告)日：1997-06-24
申请号：US298652
申请日：1994-08-31
申请人： Larry G. Fischer , Philip M. Wala , Jeffrey Brennan
发明人： Larry G. Fischer , Philip M. Wala , Jeffrey Brennan
IPC分类号： H04B10/20 , H04W16/24 , H04W36/18 , H04W88/08 , H04Q7/22
CPC分类号： H04W88/085 , H04W16/24 , H04W36/18
摘要： A microcellular communications network includes a plurality of base station units and corresponding antenna units. Each includes either conventional transmitters and receivers or all digital transmitter and receiver equipment, and interface circuitry to a mobile telecommunications switching office. The microcell traffic output is applied to a frame generator/multiplexer. The output of the frame generator/multiplexer is applied to a digitally modulated laser and conveyed by fiber to a remote antenna unit, which demultiplexes the microcell traffic signal, applies it to a digital-to-analog converter, and applies it to a power amplifier and a main antenna. The received signals are filtered, digitized, multiplexed together and transmitted over the optical fiber back to the base station. The strongest signal is selected for use. Deployment of an all digital microcellular communications system occurs in two stages. Digital filtering of the digitized RF signal is also provided, and a digital passive handoff system provides for an FFT analysis of all traffic in the cell and passive switching in response thereto.
摘要翻译：微蜂窝通信网络包括多个基站单元和对应的天线单元。每个都包括传统的发射机和接收机或所有数字发射机和接收机设备，以及到移动电信交换局的接口电路。微小区流量输出被应用于帧发生器/多路复用器。帧生成器/多路复用器的输出被应用于数字调制的激光器并被光纤传送到远程天线单元，该远程天线单元解复用微小区业务信号，将其应用于数模转换器，并将其应用于功率放大器和主天线。接收的信号被滤波，数字化，多路复用在一起，并通过光纤传送回基站。选择最强的信号使用。全数字微蜂窝通信系统的部署分两个阶段进行。还提供了数字化RF信号的数字滤波，并且数字无源切换系统响应于此，提供了小区中的所有业务和被动交换的FFT分析。

2. 发明授权

US5621786A Cellular communications system having passive handoff 失效
标题翻译：具有被动切换的蜂窝通信系统
公开(公告)号：US5621786A
公开(公告)日：1997-04-15
申请号：US294742
申请日：1994-08-23
申请人： Larry G. Fischer , Philip M. Wala , Jeffrey Brennan
发明人： Larry G. Fischer , Philip M. Wala , Jeffrey Brennan
IPC分类号： H04B10/20 , H04W16/24 , H04W36/18 , H04W88/08 , H04Q7/22
CPC分类号： H04W88/085 , H04W16/24 , H04W36/18
摘要： A passive handoff cellular communication system includes a cell divided into a plurality of zones. A base station is connected by transmission apparatus to a plurality of antenna units. The base station includes analog RF signal generation circuitry for generating a plurality of RF signals on different channels and a first switch responsive to a first control signal for switching and combining the RF signals to form a composite RF signal for each zone. Analog-to-digital conversion circuitry converts the composite signal for each zone to a digitized stream of samples and applies the samples to the transmission apparatus for transmission to each corresponding antenna unit. Each antenna unit includes digital-to-analog conversion circuitry for receiving the digitized stream of samples from the base station, reconstructing a corresponding composite analog RF signal, and applying an amplified signal to the antenna The base stations further include a second switch and combining means responsive to a second control signal for selectively combining the RF signals from the antenna units to form a plurality of composite signals for application to the receivers of the base station. A controller monitors the digitized streams of samples from all of the antenna units, digitally analyzes the energy level of each channel in each zone, and generates the first and second control signals to selectively control the zones in which each channel is broadcast and the zone from which each channel is received.
摘要翻译：无源切换蜂窝通信系统包括分为多个区域的小区。基站通过发送装置连接到多个天线单元。基站包括用于在不同信道上产生多个RF信号的模拟RF信号产生电路和响应于第一控制信号的第一开关，用于切换和组合RF信号以形成每个区域的复合RF信号。模拟 - 数字转换电路将每个区域的复合信号转换为数字化的采样流，并将样本应用于传输设备以传输到每个对应的天线单元。每个天线单元包括数模转换电路，用于从基站接收数字化的采样流，重建相应的复合模拟RF信号，并将放大的信号应用于天线基站还包括第二开关和组合装置响应于第二控制信号，用于选择性地组合来自天线单元的RF信号，以形成用于应用于基站接收机的多个复合信号。控制器监视来自所有天线单元的数字化采样流，数字地分析每个区域中每个信道的能级，并产生第一和第二控制信号，以选择性地控制每个信道被广播的区域，哪个通道被接收。

3. 发明授权

US5627879A Cellular communications system with centralized base stations and distributed antenna units 失效
标题翻译：具有集中基站和分布式天线单元的蜂窝通信系统
公开(公告)号：US5627879A
公开(公告)日：1997-05-06
申请号：US204660
申请日：1994-03-02
申请人： David S. Russell , Larry G. Fischer , Philip M. Wala , Charles R. Ratliff , Jeffrey Brennan
发明人： David S. Russell , Larry G. Fischer , Philip M. Wala , Charles R. Ratliff , Jeffrey Brennan
IPC分类号： H04B10/20 , H04W16/24 , H04W36/18 , H04W88/08 , H04Q7/22
CPC分类号： H04W88/085 , H04W16/24 , H04W36/18
摘要： A microcellular communications network includes a plurality of base station units and corresponding antenna units. The base station units are housed in a common location. Each includes either conventional transmitters and receivers or all digital transmitter and receiver equipment, and interface circuitry to a mobile telecommunications switching office. The microcell traffic output is applied to a frame generator/multiplexer. The output of the frame generator/multiplexer is applied to a digitally modulated laser. The laser output is conveyed by fiber to a remote antenna unit, which demultiplexes the microcell traffic signal and applies it to a digital-to-analog converter. The output of the digital-to-analog converter is applied to a power amplifier, which in turn is connected to a main antenna. RF signals from the mobile units are received at both a main and a diversity antenna. The received signals are filtered, digitized, multiplexed together and transmitted over the optical fiber back to the base station. The strongest signal is selected for use.
摘要翻译：微蜂窝通信网络包括多个基站单元和对应的天线单元。基站单元位于公共位置。每个都包括传统的发射机和接收机或所有数字发射机和接收机设备，以及到移动电信交换局的接口电路。微小区流量输出被应用于帧发生器/多路复用器。帧生成器/多路复用器的输出被应用于数字调制激光器。激光输出由光纤传送到远程天线单元，其将多路复用微小区业务信号并将其应用于数模转换器。数模转换器的输出被应用于功率放大器，功率放大器又连接到主天线。来自移动单元的RF信号在主天线和分集天线两者都被接收。接收的信号被滤波，数字化，多路复用在一起，并通过光纤传送回基站。选择最强的信号使用。

4. 再颁专利

USRE40564E1 Cellular communications system with sectorization 有权
标题翻译：蜂窝通信系统具有扇区化
公开(公告)号：USRE40564E1
公开(公告)日：2008-11-04
申请号：US09747273
申请日：2000-12-22
申请人： Larry G. Fischer , David S. Russell , Philip M. Wala , Charles R. Ratliff , Jeffrey O. Brennan
发明人： Larry G. Fischer , David S. Russell , Philip M. Wala , Charles R. Ratliff , Jeffrey O. Brennan
IPC分类号： H04B1/38 , H04M1/00 , H04Q7/20 , H04Q7/30 , H04Q7/36
CPC分类号： H04W88/085 , H04W16/24 , H04W36/18
摘要： A method and apparatus for sectorizing coverage of a cellular communications area includes providing a remote unit having microcell antenna units. Each microcell antenna unit is configured to cover a particular sector. The remote unit is connected to a sectorized base station unit which is connected to a mobile telecommunications switching office. Separate digitized streams representative of telephone signals received from the mobile telecommunications switching office are generated corresponding to the microcell antenna units and the separate digitized streams are multiplexed and transmitted to the remote unit. The remote unit demultiplexes the multiplexed digitized streams into the separate digitized streams corresponding to the microcell antenna units and the separate digitized streams are converted to RF signals for coverage of a particular sector by the corresponding microcell antenna unit. Separate digitized streams are separately generated for each microcell antenna unit representative of RF signals received at the microcell antenna unit for a particular sector. The separately generated digitized streams are multiplexed at the remote unit and transmitted to the sectorized base station unit. At the sectorized base station unit, the multiplexed digitized streams are demultiplexed into the separate digitized streams corresponding to microcell antenna units and the separate digitized streams are converted to RF signals for provision to the mobile telecommunications switching office. Diversity at the remote units is also provided.
摘要翻译：用于扇区化蜂窝通信区域的方法和装置包括提供具有微小区天线单元的远程单元。每个微小区天线单元被配置为覆盖特定扇区。远程单元连接到连接到移动电信交换局的分段基站单元。对应于微小区天线单元生成代表从移动电信交换局接收的电话信号的单独的数字化流，并且单独的数字化流被多路复用并发送到远程单元。远程单元将多路复用的数字化流解复用为与微小区天线单元相对应的单独的数字化流，并且将分离的数字化流转换为RF信号，以由对应的微小区天线单元覆盖特定扇区。对于每个微小区天线单元分别生成代表在特定扇区的微小区天线单元处接收的RF信号的单独的数字流。分离生成的数字化流在远程单元处被多路复用并发送到扇区化的基站单元。在扇区化的基站单元，多路复用的数字化流被解复用到与微小区天线单元相对应的单独的数字化流中，并且分离的数字化流被转换为RF信号以提供给移动电信交换局。还提供远程单位的多样性。

5. 发明授权

US5657374A Cellular communications system with centralized base stations and distributed antenna units 失效
标题翻译：具有集中基站和分布式天线单元的蜂窝通信系统
公开(公告)号：US5657374A
公开(公告)日：1997-08-12
申请号：US410129
申请日：1995-03-23
申请人： David S. Russell , Larry G. Fischer , Philip M. Wala
发明人： David S. Russell , Larry G. Fischer , Philip M. Wala
IPC分类号： H04B10/20 , H04W16/24 , H04W36/18 , H04W88/08 , H04Q7/22
CPC分类号： H04W88/085 , H04W16/24 , H04W36/18
摘要： A method of communicating a plurality of two-way inbound/outbound cellular telephone transmissions between a base station and a physically remote cell using a set of channels. At the base station, a plurality of outbound telephone transmissions, received from a network, are analog modulated onto respective ones of RF analog outbound channel carriers. The modulated analog channel carriers are combined to form a single RF analog outbound signal representing all of the outbound telephone transmissions in the set of channels. The analog outbound combined signal is subsequently digitized into a single stream of outbound digital samples and transmitted to the remote cell. At the remote cell, the stream of digital samples is converted back to the RF analog outbound combined signal and broadcasted directly to mobile units in the cell. Further, the remote cell receives a plurality of simultaneous inbound telephone transmissions from the mobile units as an RF analog inbound combined signal. The analog inbound combined signal is digitized into a single stream of inbound digital samples and transmitted to the base station. At the base station, the stream of inbound digital samples is converted into a single RF analog inbound signal, the inbound telephone transmissions are recovered from the single RF analog inbound signal, and delivered to the network.
摘要翻译：一种使用一组信道在基站和物理上远程小区之间传送多个双向入站/出站蜂窝电话传输的方法。在基站处，从网络接收的多个出站电话传输被模拟调制到RF模拟出站信道载体的相应的一个。调制的模拟信道载波被组合以形成表示该组信道中的所有出站电话传输的单个RF模拟出站信号。模拟出站组合信号随后被数字化为单个出站数字样本流并传输到远程小区。在远程小区，数字样本流被转换回RF模拟出站组合信号，并直接广播到小区中的移动单元。此外，远程小区从移动单元接收多个同时入站电话传输作为RF模拟入站组合信号。模拟入站组合信号被数字化为单个入站数字采样流并传输到基站。在基站，入站数字样本流被转换为单个RF模拟入站信号，入站电话传输从单个RF模拟入站信号中恢复，并传送到网络。

6. 发明授权

US07554946B2 Dynamic reallocation of bandwidth and modulation protocols 有权
标题翻译：带宽和调制协议的动态重新分配
公开(公告)号：US07554946B2
公开(公告)日：2009-06-30
申请号：US12020053
申请日：2008-01-25
申请人： David J. Conyers , Jeffrey J. Cannon , Larry G. Fischer , Douglas D. Weaver , Santosh K. Sonbarse , William J. Mitchell , Michael J. Hermel , Donald R. Bauman , Jerry Edward Toms , Philip M. Wala
发明人： David J. Conyers , Jeffrey J. Cannon , Larry G. Fischer , Douglas D. Weaver , Santosh K. Sonbarse , William J. Mitchell , Michael J. Hermel , Donald R. Bauman , Jerry Edward Toms , Philip M. Wala
IPC分类号： H04Q7/00 , H04Q7/20
CPC分类号： H04L47/2416 , H04L47/15 , H04L47/21 , H04L47/2433 , H04L47/283 , H04L47/70 , H04L47/762 , H04L47/824
摘要： Systems for dynamic reallocation of bandwidth and modulation protocols is provided. In one embodiment, a radio head interface module comprises: a transmit buffer adapted to receive a data stream from a signal processing module and store the data stream as a page of data samples having a page header; a transmit engine; a digital upconverter, the transmit engine adapted to transfer the page of data samples from the transmit buffer to the digital upconverter; a configuration management unit adapted to receive reconfiguration information from the signal processing module, the reconfiguration information including at least one of air interface protocol parameters and bandwidth allocation information; and a memory adapted with digital upconverter parameters. The configuration management unit is accesses the memory to lookup associated digital upconverter parameters based on the reconfiguration information. The configuration management unit is further adapted to output the associated digital upconverter parameters to the digital up converter.
摘要翻译：提供了带宽和调制协议动态重新分配的系统。在一个实施例中，无线电头接口模块包括：适于从信号处理模块接收数据流的发送缓冲器，并将数据流存储为具有页头的数据样本页; 发送引擎; 数字上变频器，所述发送引擎适于将数据样本的页从所述发送缓冲器传送到所述数字上变频器; 配置管理单元，适于从所述信号处理模块接收重新配置信息，所述重新配置信息包括空中接口协议参数和带宽分配信息中的至少一个; 以及适用于数字上变频器参数的存储器。配置管理单元基于重新配置信息访问存储器以查找相关联的数字上变频器参数。配置管理单元还适于将相关联的数字上变频器参数输出到数字上变频器。

7. 再颁专利

USRE43964E1 Cellular communications system with sectorization 有权
公开(公告)号：USRE43964E1
公开(公告)日：2013-02-05
申请号：US11937255
申请日：2007-11-08
申请人： Larry G. Fischer , David S. Russell , Philip M. Wala , Charles R. Ratliff , Jeffrey O. Brennan
发明人： Larry G. Fischer , David S. Russell , Philip M. Wala , Charles R. Ratliff , Jeffrey O. Brennan
IPC分类号： H04B10/12
CPC分类号： H04W88/085 , H04W16/24 , H04W36/18
摘要： A method and apparatus for sectorizing coverage of a cellular communications area includes providing a remote unit having microcell antenna units. Each microcell antenna unit is configured to cover a particular sector. The remote unit is connected to a sectorized base station unit which is connected to a mobile telecommunications switching office. Separate digitized streams representative of telephone signals received from the mobile telecommunications switching office are generated corresponding to the microcell antenna units and the separate digitized streams are multiplexed and transmitted to the remote unit. The remote unit demultiplexes the multiplexed digitized streams into the separate digitized streams corresponding to the microcell antenna units and the separate digitized streams are converted to RF signals for coverage of a particular sector by the corresponding microcell antenna unit. Separate digitized streams are separately generated for each microcell antenna unit representative of RF signals received at the microcell antenna unit for a particular sector. The separately generated digitized streams are multiplexed at the remote unit and transmitted to the sectorized base station unit. At the sectorized base station unit, the multiplexed digitized streams are demultiplexed into the separate digitized streams corresponding to microcell antenna units and the separate digitized streams are converted to RF signals for provision to the mobile telecommunications switching office. Diversity at the remote units is also provided.

8. 发明授权

US07640019B2 Dynamic reallocation of bandwidth and modulation protocols 有权
标题翻译：带宽和调制协议的动态重新分配
公开(公告)号：US07640019B2
公开(公告)日：2009-12-29
申请号：US11094947
申请日：2005-03-31
申请人： David J. Conyers , Jeffrey J. Cannon , Larry G. Fischer , Douglas D. Weaver , Santosh K. Sonbarse , William J. Mitchell , Michael J. Hermel , Donald R. Bauman , Jerry E. Toms , Philip M. Wala
发明人： David J. Conyers , Jeffrey J. Cannon , Larry G. Fischer , Douglas D. Weaver , Santosh K. Sonbarse , William J. Mitchell , Michael J. Hermel , Donald R. Bauman , Jerry E. Toms , Philip M. Wala
IPC分类号： H04Q7/20 , H04B7/212
CPC分类号： H04L47/2416 , H04L47/15 , H04L47/21 , H04L47/2433 , H04L47/283 , H04L47/70 , H04L47/762 , H04L47/824
摘要： A communications system dynamically reconfigurable for RF bandwidth and modulation protocols is disclosed. A server comprises one or more radio head interface modules and a call processing software module adapted to communicate with each other. The call processing software is adapted to perform modulation and demodulation of voice and data streams using one or more air interface protocols. A radio head unit coupled to the radio head interface module communicates with one or more subscriber units. The radio head interface module receives either air interface protocol configuration information, or RF signal bandwidth allocation information, from the call processing software module for one or more communication channels, the information providing a timing trigger and a protocol or bandwidth for one or more communication channels. The radio head interface module reconfigures itself for one or more communications channels, based on the change instructed by the call processing software.
摘要翻译：公开了用于RF带宽和调制协议的动态可重构的通信系统。服务器包括一个或多个无线电头接口模块和适于彼此通信的呼叫处理软件模块。呼叫处理软件适于使用一个或多个空中接口协议来执行语音和数据流的调制和解调。耦合到无线电头接口模块的无线电头单元与一个或多个用户单元进行通信。无线电头接口模块从一个或多个通信信道的呼叫处理软件模块接收空中接口协议配置信息或RF信号带宽分配信息，该信息为一个或多个通信信道提供定时触发和协议或带宽。基于由呼叫处理软件指示的改变，无线电头接口模块针对一个或多个通信信道重新配置自身。

9. 发明授权

US5852651A Cellular communications system with sectorization 失效
公开(公告)号：US5852651A
公开(公告)日：1998-12-22
申请号：US299159
申请日：1994-08-31
申请人： Larry G. Fischer , Charles R. Ratliff , Philip M. Wala
发明人： Larry G. Fischer , Charles R. Ratliff , Philip M. Wala
IPC分类号： H04B10/20 , H04W16/24 , H04W36/18 , H04W88/08 , H04Q7/30
CPC分类号： H04W88/085 , H04W16/24 , H04W36/18
摘要： A method and apparatus for sectorizing coverage of a cellular communications area includes providing a remote unit having microcell antenna units. Each microcell antenna unit is configured to cover a particular sector. The remote unit is connected to a sectorized base station unit which is connected to a mobile telecommunications switching office. Separate digitized streams representative of telephone signals received from the mobile telecommunications switching office are generated corresponding to the microcell antenna units and the separate digitized streams are multiplexed and transmitted to the remote unit. The remote unit demultiplexes the multiplexed digitized streams into the separate digitized streams corresponding to the microcell antenna units and the separate digitized streams are converted to RF signals for coverage of a particular sector by the corresponding microcell antenna unit. Separate digitized streams are separately generated for each microcell antenna unit representative of RF signals received at the microcell antenna unit for a particular sector. The separately generated digitized streams are multiplexed at the remote unit and transmitted to the sectorized base station unit. At the sectorized base station unit, the multiplexed digitized streams are demultiplexed into the separate digitized streams corresponding to microcell antenna units and the separate digitized streams are converted to RF signals for provision to the mobile telecommunications switching office. Diversity at the remote units is also provided.

10. 再颁专利

USRE44398E1 Dynamic reallocation of bandwidth and modulation protocols 有权
公开(公告)号：USRE44398E1
公开(公告)日：2013-07-30
申请号：US13174422
申请日：2011-06-30
申请人： David J. Conyers , Jeffrey J. Cannon , Larry G. Fischer , Douglas D. Weaver , Santosh K. Sonbarse , William J. Mitchell , Michael J. Hermel , Donald R. Bauman , Jerry Edward Toms , Philip M. Wala
发明人： David J. Conyers , Jeffrey J. Cannon , Larry G. Fischer , Douglas D. Weaver , Santosh K. Sonbarse , William J. Mitchell , Michael J. Hermel , Donald R. Bauman , Jerry Edward Toms , Philip M. Wala
IPC分类号： H04W4/00
CPC分类号： H04L47/2416 , H04L47/15 , H04L47/21 , H04L47/2433 , H04L47/283 , H04L47/70 , H04L47/762 , H04L47/824
摘要： Systems for dynamic reallocation of bandwidth and modulation protocols is provided. In one embodiment, a radio head interface module comprises: a transmit buffer adapted to receive a data stream from a signal processing module and store the data stream as a page of data samples having a page header; a transmit engine; a digital upconverter, the transmit engine adapted to transfer the page of data samples from the transmit buffer to the digital upconverter; a configuration management unit adapted to receive reconfiguration information from the signal processing module, the reconfiguration information including at least one of air interface protocol parameters and bandwidth allocation information; and a memory adapted with digital upconverter parameters. The configuration management unit is accesses the memory to lookup associated digital upconverter parameters based on the reconfiguration information. The configuration management unit is further adapted to output the associated digital upconverter parameters to the digital up converter.

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式