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

US07664533B2 Method and apparatus for a multi-beam antenna system 有权
标题翻译：多波束天线系统的方法和装置
公开(公告)号：US07664533B2
公开(公告)日：2010-02-16
申请号：US10704158
申请日：2003-11-10
申请人： Andrew Logothetis , David Astely
发明人： Andrew Logothetis , David Astely
IPC分类号： H04M1/00
CPC分类号： H01Q3/2605 , H01Q1/246 , H01Q3/40 , H01Q25/002
摘要： An antenna array in a radio node includes multiple antenna elements for transmitting a wider beam covering a majority of a sector cell that includes a common signal and a narrower beam covering only a part of the sector cell that includes a mobile user-specific signal. Transmitting circuitry is coupled to the antenna array, and processing circuitry is coupled to the transmitting circuitry. The processing circuitry ensures the user-specific signal and the common signal in a mixed beam embodiment are in-phase and time-aligned at the antenna array. In a steered beam embodiment, the processing circuitry ensures the user-specific signal and the common signal are time-aligned and have a controlled phase difference when received at mobile stations in the sector cell. In both embodiments, distortions in the common signal and the user-specific signal associated with their conversion from baseband frequency to radio frequency are also compensated. And in the steered beam embodiment, beam forming weights are used not only to radiate a narrower beam to the desired mobile user but also to direct a wider common signal beam to reach all mobile users in the cell.
摘要翻译：无线电节点中的天线阵列包括多个天线元件，用于发射覆盖包括公共信号的扇区小区的大部分的较宽波束，以及仅覆盖包括移动用户专用信号的扇区小区的一部分的较窄波束。发射电路耦合到天线阵列，并且处理电路耦合到发射电路。处理电路确保混合波束实施例中的用户特定信号和公共信号在天线阵列处是同相和时间对准的。在转向光束实施例中，处理电路确保用户特定信号和公共信号是时间对准的，并且在扇区小区中的移动台处接收时具有受控的相位差。在这两个实施例中，公共信号的失真以及与从基带频率到射频的转换相关联的用户特定信号也被补偿。并且在转向束实施例中，波束形成权重不仅用于将较窄的波束辐射到期望的移动用户，而且还用于引导较宽的公共信号波束以到达小区中的所有移动用户。

2. 发明申请

US20050101352A1 Method and apparatus for a multi-beam antenna system 有权
标题翻译：多波束天线系统的方法和装置
公开(公告)号：US20050101352A1
公开(公告)日：2005-05-12
申请号：US10704158
申请日：2003-11-10
申请人： Andrew Logothetis , David Astely
发明人： Andrew Logothetis , David Astely
IPC分类号： H01Q1/24 , H01Q3/26 , H01Q3/40 , H01Q25/00 , H04B7/06 , H04M1/00
CPC分类号： H01Q3/2605 , H01Q1/246 , H01Q3/40 , H01Q25/002
摘要： An antenna array in a radio node includes multiple antenna elements for transmitting a wider beam covering a majority of a sector cell that includes a common signal and a narrower beam covering only a part of the sector cell that includes a mobile user-specific signal. Transmitting circuitry is coupled to the antenna array, and processing circuitry is coupled to the transmitting circuitry. The processing circuitry ensures the user-specific signal and the common signal in a mixed beam embodiment are in-phase and time-aligned at the antenna array. In a steered beam embodiment, the processing circuitry ensures the user-specific signal and the common signal are time-aligned and have a controlled phase difference when received at mobile stations in the sector cell. In both embodiments, distortions in the common signal and the user-specific signal associated with their conversion from baseband frequency to radio frequency are also compensated. And in the steered beam embodiment, beam forming weights are used not only to radiate a narrower beam to the desired mobile user but also to direct a wider common signal beam to reach all mobile users in the cell.
摘要翻译：无线电节点中的天线阵列包括多个天线元件，用于发射覆盖包括公共信号的扇区小区的大部分的较宽波束，以及仅覆盖包括移动用户专用信号的扇区小区的一部分的较窄波束。发射电路耦合到天线阵列，并且处理电路耦合到发射电路。处理电路确保混合波束实施例中的用户特定信号和公共信号在天线阵列处是同相和时间对准的。在转向光束实施例中，处理电路确保用户特定信号和公共信号是时间对准的，并且在扇区小区中的移动台处接收时具有受控的相位差。在这两个实施例中，公共信号的失真以及与从基带频率到射频的转换相关联的用户特定信号也被补偿。并且在转向束实施例中，波束形成权重不仅用于将较窄的波束辐射到期望的移动用户，而且还用于引导较宽的公共信号波束以到达小区中的所有移动用户。

3. 发明申请

US20120082061A1 APPARATUS AND METHOD FOR CONTROLLING A WIRELESS FEEDER NETWORK 有权
标题翻译：用于控制无线馈线网络的装置和方法
公开(公告)号：US20120082061A1
公开(公告)日：2012-04-05
申请号：US13218744
申请日：2011-08-26
申请人： Martin Lysejko , Andrew Logothetis
发明人： Martin Lysejko , Andrew Logothetis
IPC分类号： H04W16/18
CPC分类号： H04W72/1205 , H04B7/0413 , H04L5/0073 , H04W24/02 , H04W88/085 , H04W92/20
摘要： An apparatus and method are provided for controlling a wireless feeder network which connects access base stations to a communications network. The wireless feeder network comprises a plurality of feeder base stations connected to the communications network and a plurality of feeder terminals connected to the plurality of access base stations. A sounding schedule is determined for the wireless feeder network in dependence on a visibility matrix, the visibility matrix indicative of visibility via the wireless feeder network between each of the plurality of feeder base stations and each of the plurality of feeder terminals. Then a sounding procedure within the wireless feeder network is controlled in accordance with the sounding schedule. The visibility matrix enables a coordinated sounding procedure to be carried out, allowing more accurate channel metrics for the wireless channels of the network to be determined which are not adversely affected by interference between elements of the network.
摘要翻译：提供了一种用于控制将接入基站连接到通信网络的无线馈线网络的装置和方法。无线馈线网络包括连接到通信网络的多个馈线基站和连接到多个接入基站的多个馈线终端。根据可见矩阵确定无线馈线网络的探测计划，可视矩阵表示多个馈线基站中的每一个与多个馈线终端中的每一个之间经由无线馈线网络的可见性的可见性矩阵。然后根据探测时间表控制无线馈线网络内的探测过程。可见性矩阵使得能够执行协调的探测过程，从而允许确定网络的无线信道的更准确的信道度量，其不受网络元件之间的干扰的不利影响。

4. 发明申请

US20080198793A1 POINT TO MULTIPOINT DEVICE FOR COMMUNICATION WITH A PLURALITY OF TELECOMMUNICATIONS UNITS 有权
标题翻译：与多个电信单位通信的多点设备要点
公开(公告)号：US20080198793A1
公开(公告)日：2008-08-21
申请号：US11564232
申请日：2006-11-28
申请人： Martin Lysejko , Andrew Logothetis
发明人： Martin Lysejko , Andrew Logothetis
IPC分类号： H04Q7/00
CPC分类号： H04W16/28 , H04B7/0617 , H04B7/0695 , H04B7/0851
摘要： A point to multipoint device for use in a wireless network to provide wireless communication with a plurality of telecommunications units is described, for communication from the point to multipoint device to the telecommunications units, the point to multipoint device being operable to employ multiple sets of beams, at any point in time one set being used. The point to multipoint device comprises beam set generation logic for generating the multiple sets of beams arranged into one or more groups, each group comprising one beam from each set. Within each group the beams of that group are orthogonal with respect to each other, and each beam within each set is generated randomly with respect to other beams in that set. An interface is provided for receiving a synchronisation signal issued to all point to multipoint devices in the wireless network. Beam switching logic is then used to determine, having regard to the synchronisation signal, switch times at which the point to multipoint device switches from one set of beams to another set of beams, the switch times being the same for all point to multipoint devices in the wireless network. An antenna array is controlled by the beam switching logic to produce at any point in time one of the sets of beams for transmitting data forming the communication to the telecommunications units. The use of such sets of beams has been found to lower the average co-channel interference observed within the wireless network.
摘要翻译：描述了用于在无线网络中提供与多个电信单元的无线通信的点对多点设备，用于从点对多点设备到电信单元的通信，点对多点设备可操作以使用多组波束在任何时间点使用一组。点对多点设备包括波束组生成逻辑，用于产生布置成一个或多个组的多组波束，每组包括来自每组的一个波束。在每组内，该组的光束相对于彼此正交，并且每组中的每个光束相对于该组中的其它光束随机生成。提供接口，用于接收发给无线网络中的所有点对多点设备的同步信号。然后，光束切换逻辑被用于确定，考虑到同步信号，点对多点设备从一组波束切换到另一组波束的切换时间，所有点对多点设备的切换时间相同，无线网络。天线阵列由波束切换逻辑控制，以在任何时间点产生一组波束，用于将形成通信的数据传送到电信单元。已经发现使用这样的波束来降低在无线网络内观测到的平均同信道干扰。

5. 发明申请

US20050064872A1 Reducing shared downlink radio channel interference by transmitting to multiple mobiles using multiple antenna beams 有权
标题翻译：通过使用多个天线波束发送到多个移动台来减少共享的下行链路无线电信道干扰
公开(公告)号：US20050064872A1
公开(公告)日：2005-03-24
申请号：US10668363
申请日：2003-09-24
申请人： Afif Osseiran , Andrew Logothetis , Marten Ericson
发明人： Afif Osseiran , Andrew Logothetis , Marten Ericson
IPC分类号： H04B7/04 , H04B7/06 , H04L12/56 , H04W16/28 , H04W72/08 , H04W72/12 , H04Q7/20
CPC分类号： H04W72/1231 , H04B7/0408 , H04B7/0617 , H04B7/0619 , H04W16/28
摘要： A radio base station includes multiple antennas associated with a cell. Multiple mobile radios are selected to receive transmissions over a shared radio channel during a predetermined time interval. Information is transmitted over the shared radio channel to multiple mobile radios in the cell during the predetermined time interval using multiple antenna beams. As a result, interference from the transmission appears as white additive Gaussian noise in time and in space in the cell. A “flashlight effect” caused by a single beam transmission over the shared channel during a predetermined time interval that would normally detrimentally impact mobile channel quality detection is avoided. Other methods for avoiding the flashlight effect are described.
摘要翻译：无线电基站包括与小区相关联的多个天线。多个移动无线电被选择以在预定的时间间隔期间通过共享无线电信道接收传输。信息通过共享无线电信道在预定时间间隔内使用多个天线波束在小区中的多个移动无线电发射。结果，来自传输的干扰在时间和空间中表现为白色加性高斯噪声。避免了在通常不利地影响移动信道质量检测的预定时间间隔期间通过共享信道上的单个波束传输引起的“手电筒效应”。描述了避免手电筒效应的其他方法。

6. 发明授权

US08842621B2 Apparatus and method for controlling a wireless network 有权
标题翻译：用于控制无线网络的装置和方法
公开(公告)号：US08842621B2
公开(公告)日：2014-09-23
申请号：US13218829
申请日：2011-08-26
申请人： Martin Lysejko , Andrew Logothetis
发明人： Martin Lysejko , Andrew Logothetis
IPC分类号： H04W4/00 , H04W72/08 , H04W92/20 , H04W72/12 , H04W28/06 , H04W28/04
CPC分类号： H04W72/082 , H04W28/04 , H04W28/06 , H04W72/1231 , H04W72/1278 , H04W92/20
摘要： A wireless network, connecting network users to a communications network, comprises base stations connected to the communications network and terminals connected to the network users, each terminal having a link with a base station to form a base station/terminal pair, the links established over a wireless resource comprising resource blocks. The method comprises: determining, for each base station/terminal pair, a set of resource utilization fractions; determining a set of co-channel interference matrices for each network component, distributing, to each base station, corresponding elements from the sets of resource utilization fractions and the sets of co-channel interference matrices; suppressing, in each network component, co-channel interference in dependence on the determined co-channel interference matrix; and dynamically establishing links required to handle the network traffic for each base station by selecting from the resource blocks in accordance with the resource utilization fractions.
摘要翻译：将网络用户连接到通信网络的无线网络包括连接到通信网络的基站和连接到网络用户的终端，每个终端与基站具有链路以形成基站/终端对，建立在包括资源块的无线资源。该方法包括：为每个基站/终端对确定一组资源利用率; 确定每个网络组件的一组同信道干扰矩阵，从所述资源利用分数集合和所述同信道干扰矩阵集合向每个基站分配对应的元素; 在每个网络组件中，根据确定的同信道干扰矩阵抑制同信道干扰; 以及根据所述资源利用率从所述资源块中选择来动态建立处理每个基站的网络业务所需的链路。

7. 发明授权

US08331467B2 Time and frequency channel estimation 有权
公开(公告)号：US08331467B2
公开(公告)日：2012-12-11
申请号：US12461420
申请日：2009-08-11
申请人： Afif Osseiran , Andrew Logothetis
发明人： Afif Osseiran , Andrew Logothetis
IPC分类号： H04L27/28
CPC分类号： H04L25/0242 , H04L1/0625 , H04L5/0023 , H04L5/0048 , H04L25/0224 , H04L25/0226 , H04L25/0232 , H04L25/025
摘要： A radio channel estimation technique is described for use in a OFDM-based radio communications system. A block of OFDM symbols is transmitted from multiple antennas over multiple sub-carrier frequencies. The block of OFDM symbols includes known pilot symbols as well as data symbols to be determined by a receiver. The pilot symbols are transmitted in a predetermined pattern at periodic times on periodic sub-carriers. A pilot channel estimate is determined for each pilot symbol in the received block of OFDM symbols. An N×M matrix of points corresponding to the received OFDM symbol block is formed. N is the number of sub-carriers and M is the number of OFDM symbols in the OFDM symbol block. The matrix is formed by inserting pilot channel estimates at predetermined positions in the N×M matrix according to the predetermined pilot pattern and inserting zeros in remaining positions in the N×M matrix. A two dimensional inverse Fourier transform of the N×M matrix is calculated resulting in multiple copies of a channel estimate in the time domain. One is selected, and a two dimensional Fourier transform of the selected channel estimate is calculated to obtain a channel estimate at each point in the OFDM block.

8. 发明申请

US20070135172A1 POINT TO MULTIPOINT DEVICE FOR COMMUNICATION WITH A PLURALITY OF TELECOMMUNICATIONS UNITS 有权
公开(公告)号：US20070135172A1
公开(公告)日：2007-06-14
申请号：US11564248
申请日：2006-11-28
申请人： MARTIN LYSEJKO , Andrew Logothetis
发明人： MARTIN LYSEJKO , Andrew Logothetis
IPC分类号： H04M1/00
CPC分类号： H04W16/28 , H04B7/0617 , H04B7/0695 , H04B7/0851
摘要： A point to multipoint device for use in a wireless network to provide wireless communication with a plurality of telecommunications units is described. For communication from the telecommunications units to the point to multipoint device, the point to multipoint device is operable to define a sequence of variable duration communication channels, each communication channel being allocatable to one of the telecommunications units. The point to multipoint device has training sequence storage for storing a training sequence indication indicating a training sequence associated with the point to multipoint device. Repetition rate storage is also provided for storing a repetition rate at which the training sequence is to be repeated in the sequence of communication channels, the repetition rate being the same for all point to multipoint devices in the wireless network. An interface receives a synchronisation signal issued to all point to multipoint devices in the wireless network, with the synchronisation signal being used to determine a time at which a first occurrence of the training sequence is to occur within the sequence of communication channels. Communication channel control logic defines the sequence of variable duration communication channels and causes control data to be transmitted to the telecommunications units identifying the sequence of channels, the training sequence indication and the repetition rate. An antenna array provides a reception beam for receiving the communication from the telecommunications units, and beamforming logic is used to determine beamforming weights used to produce the reception beam. The beamforming logic repeats the determination of beamforming weights at the repetition rate coincident with the appearance of the training sequence in the sequence of communication channels. This provides a particularly effective technique for reducing co-channel interference within the wireless network.

9. 发明申请

US20120082044A1 APPARATUS AND METHOD FOR CONTROLLING A WIRELESS FEEDER NETWORK 有权
标题翻译：用于控制无线馈线网络的装置和方法
公开(公告)号：US20120082044A1
公开(公告)日：2012-04-05
申请号：US13218722
申请日：2011-08-26
申请人： Martin Lysejko , Andrew Logothetis
发明人： Martin Lysejko , Andrew Logothetis
IPC分类号： H04W72/04 , H04L12/26 , H04W24/00 , H04W74/04
CPC分类号： H04W24/02 , H04W16/04 , H04W84/047 , H04W88/085 , H04W92/045
摘要： An apparatus and method are provided for controlling a wireless feeder network used to couple access base stations of an access network with a communications network. The wireless feeder network comprises a plurality of feeder base stations coupled to the communications network and a plurality of feeder terminals coupled to associated access base stations. Each feeder terminal has a feeder link with a feeder base station, and the feeder links are established over a wireless resource comprising a plurality of resource blocks. Sounding data obtained from the wireless feeder network is used to compute an initial global schedule to allocate to each feeder link at least one resource block, and the global schedule is distributed whereafter the wireless feeder network operates in accordance with the currently distributed global schedule to pass traffic between the communications network and the access base stations. Using traffic reports received during use, an evolutionary algorithm is applied to modify the global schedule, with the resultant updated global schedule then being distributed for use. This enables the allocation of resource blocks to individual feeder links to be varied over time taking account of traffic within the wireless feeder network, thereby improving spectral efficiency.
摘要翻译：提供了一种用于控制用于将接入网络的接入基站与通信网络耦合的无线馈线网络的装置和方法。无线馈线网络包括耦合到通信网络的多个馈线基站和耦合到相关联的接入基站的多个馈线终端。每个馈线终端具有与馈电基站的馈线链路，并且馈线链路通过包括多个资源块的无线资源建立。使用从无线馈线网络获得的声音数据来计算初始全局调度，以分配给每个馈线链路至少一个资源块，并且全局调度分布在无线馈线网络根据当前分布的全局调度传递之后运行通信网络和接入基站之间的流量。使用在使用期间收到的流量报告，应用进化算法来修改全局调度，随后生成的更新后的全局调度被分发供使用。这使得能够在考虑到无线馈线网络内的业务的情况下，随着时间的推移随着时间而改变对各个馈线链路的资源块的分配，从而提高频谱效率。

10. 发明授权

US08126066B2 Time and frequency channel estimation 有权
标题翻译：时间和频率信道估计
公开(公告)号：US08126066B2
公开(公告)日：2012-02-28
申请号：US11418455
申请日：2006-05-05
申请人： Afif Osseiran , Andrew Logothetis
发明人： Afif Osseiran , Andrew Logothetis
IPC分类号： H04L27/28
CPC分类号： H04L25/0242 , H04L1/0625 , H04L5/0023 , H04L5/0048 , H04L25/0224 , H04L25/0226 , H04L25/0232 , H04L25/025
摘要： A radio channel estimation technique is described for use in a OFDM-based radio communications system. A block of OFDM symbols is transmitted from multiple antennas over multiple sub-carrier frequencies. The block of OFDM symbols includes known pilot symbols as well as data symbols to be determined by a receiver. The pilot symbols are transmitted in a predetermined pattern at periodic times on periodic sub-carriers. A pilot channel estimate is determined for each pilot symbol in the received block of OFDM symbols. An N×M matrix of points corresponding to the received OFDM symbol block is formed. N is the number of sub-carriers and M is the number of OFDM symbols in the OFDM symbol block. The matrix is formed by inserting pilot channel estimates at predetermined positions in the N×M matrix according to the predetermined pilot pattern and inserting zeros in remaining positions in the N×M matrix. A two dimensional inverse Fourier transform of the N×M matrix is calculated resulting in multiple copies of a channel estimate in the time domain. One is selected, and a two dimensional Fourier transform of the selected channel estimate is calculated to obtain a channel estimate at each point in the OFDM block.
摘要翻译：描述了用于基于OFDM的无线电通信系统中的无线电信道估计技术。 OFDM符号块通过多个子载波频率从多个天线发送。 OFDM符号的块包括已知的导频符号以及由接收机确定的数据符号。在周期性子载波上周期性地以预定模式发送导频符号。对OFDM符号的接收块中的每个导频符号确定导频信道估计。形成与接收的OFDM符号块对应的N×M个矩阵。 N是子载波的数量，M是OFDM符号块中的OFDM符号的数量。通过根据预定导频模式在N×M矩阵中的预定位置处插入导频信道估计并将零插入N×M矩阵中的剩余位置来形成矩阵。计算N×M矩阵的二维傅里叶逆变换，得到时域中的信道估计的多个拷贝。选择一个，并且计算所选择的信道估计的二维傅里叶变换，以在OFDM块中的每个点处获得信道估计。

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