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11.发明授权Apparatus and method for efficient delivery of multicast data over personal access communications system (PACS) 有权通过个人接入通信系统（PACS）有效传送组播数据的装置和方法公开(公告)号：US06741575B1
公开(公告)日：2004-05-25
申请号：US09258438
申请日：1999-02-26
申请人： Yongguang Zhang , Bo Ryu , Son K. Dao , Tayyab Khan , Stanley E. Kay , Sivakamar Kailas
发明人： Yongguang Zhang , Bo Ryu , Son K. Dao , Tayyab Khan , Stanley E. Kay , Sivakamar Kailas
IPC分类号： H04L1256
CPC分类号： H04L29/12009 , H04L12/189 , H04L29/12207 , H04L61/20
摘要： A method, apparatus, article of manufacture, and a memory structure for multicasting data in a cellular personal access communication system is disclosed. The method comprises the steps of allocating a multicast packet terminal identifier to a multicast group when a subscriber unit in a cell requests membership in the multicast group, receiving a multicast packet having a global multicast address, determining a cell identifier from a mapping of the global multicast address to at least one local multicast identifier and a cell identifier, and forwarding the multicast packet to the cell according to the cell identifier. The apparatus comprises a radio port controller unit having a packet data control unit coupled to a radio port configured to receive a multicast packet and a packet forwarding module. The packet data control unit includes an allocation module configured to allocate a local multicast identifier to a multicast group when a subscriber unit in a cell requests membership in the multicast group. The packet forwarding module is configured to determine a cell identifier from a mapping of the global multicast address to at least one local packet terminal identifier and a cell identifier and to forward the multicast packet to a cell according to the cell identifier.
摘要翻译： 公开了一种用于在蜂窝个人接入通信系统中组播数据的方法，装置，制品和存储器结构。 该方法包括以下步骤：当小区中的订户单元请求组播组中的成员资格时，向多播组分配多播分组终端标识符，接收具有全局多播地址的多播分组，从全局映射确定小区标识符 组播地址到至少一个本地组播标识符和小区标识符，并且根据小区标识符将组播分组转发到小区。 该装置包括无线端口控制器单元，其具有耦合到被配置为接收多播分组的无线端口和分组转发模块的分组数据控制单元。 分组数据控制单元包括分配模块，其被配置为当小区中的订户单元请求组播组中的成员资格时，向多播组分配本地多播标识符。 分组转发模块被配置为根据全局多播地址到至少一个本地分组终端标识符和小区标识符的映射来确定小区标识符，并且根据小区标识符将组播分组转发到小区。
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12.发明授权Circularly polarized reflect array using 2-bit phase shifter having initial phase perturbation 有权使用具有初始相位扰动的2位移相器的圆偏振反射阵列公开(公告)号：US06351240B1
公开(公告)日：2002-02-26
申请号：US09664695
申请日：2000-09-19
申请人： Khalid Karimullah , Jian Song , Lin-Nan Lee , Stanley E. Kay
发明人： Khalid Karimullah , Jian Song , Lin-Nan Lee , Stanley E. Kay
IPC分类号： H01Q138
CPC分类号： H01Q9/0428 , H01Q3/38 , H01Q3/46 , H01Q9/0421
摘要： An approach for electronically performing beam steering is disclosed. For electronic scanning, an n-bit quantized phase shifting approach is employed at each array element of a phased array antenna. By applying an initial phase bias, either deterministically or randomly, in each of the array elements, the performance of a phased array with n-bit quantization (even with n=2) approaches the performance of a system with no quantization. This approach can be used with linearly polarized or circularly polarized waves. For circularly polarized waves, the 2n phase shifts required of n-bit quantization are achieved in a manner that provides a simple, low-loss construction, which allows production of a low-cost reflectarray or a flat-plate lens.
摘要翻译： 公开了一种用于电子执行光束转向的方法。 对于电子扫描，在相控阵天线的每个阵列元件处采用n位量化相移方法。 通过在每个阵列元件中确定地或随机地施加初始相位偏置，具有n位量化（即使n = 2）的相控阵列的性能接近没有量化的系统的性能。 这种方法可以用于线偏振或圆偏振波。 对于圆偏振波，n位量化所需的2n相移实现为提供简单的低损耗结构，这允许生产低成本反射阵列或平板透镜。
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13.发明授权
公开(公告)号：US5390197A
公开(公告)日：1995-02-14
申请号：US985767
申请日：1992-12-04
申请人： Andrew J. MacDonald , Youngky Kim , Stanley E. Kay
发明人： Andrew J. MacDonald , Youngky Kim , Stanley E. Kay
CPC分类号： H04L1/0057 , H04L1/0041 , H04L1/0045 , H04W16/10
摘要： A vestigial identification system is provided for transmitting information in a cellular communications network employing frequency reuse. The vestigial identification system enables a receiver to detect both bit errors and interfering messages to avoid call disruption. A composite parity check is produced by encoding message data and a site identifier via an encoder. A transmitter conveys a code word, formed at a code word generator by combining the composite parity check with the message data, to a receiver. At the receiver, an encoder forms an error detection parity check by encoding both the message data from the code word and the site identifier. An error detector compares the composite parity check from the transmitted code word to the error detection parity check, and generates an error if the parity checks are not identical to one another, enabling rejection of the message by the receiver.
摘要翻译： 提供了一种残留识别系统，用于在使用频率重用的蜂窝通信网络中传输信息。 残留识别系统使得接收机能够检测位错误和干扰消息，以避免呼叫中断。 通过编码器编码消息数据和站点标识符来产生复合奇偶校验。 发射机通过将复合奇偶校验与消息数据组合在码字发生器处，形成码字到接收机。 在接收机处，编码器通过对代码字和站点标识符的消息数据进行编码来形成错误检测奇偶校验。 错误检测器将来自发送的代码字的复合奇偶校验与差错检测奇偶校验进行比较，并且如果奇偶校验检查彼此不相同，则可以产生错误，从而使接收器能够拒绝该消息。
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14.发明授权
公开(公告)号：US5812935A
公开(公告)日：1998-09-22
申请号：US397804
申请日：1995-03-03
申请人： Stanley E. Kay
发明人： Stanley E. Kay
CPC分类号： H04B7/0671 , H04B7/0689 , H04W52/42 , H04W24/00 , H04W84/042
摘要： A cellular system has base stations in which diversity transmission is controllably employed to improve voice communications as needed. Normal signal transmission is employed in each voice channel unless it is detected that quality has dropped to a point where diversity transmission is needed to enhance the quality. When it is detected that a voice channel needs diversity transmission, a diversity (delayed) signal is automatically transmitted for that channel over an independent path. A common diversity transmitter is employed for all channels, whereas individual transmitters are employed for the normally transmitted signals in the respective voice channels.
摘要翻译： 蜂窝系统具有基站，其中分集传输被可控地用于根据需要改进语音通信。 在每个语音信道中采用正常信号传输，除非检测到质量下降到需要分集传输以提高质量的点。 当检测到语音信道需要分集传输时，在独立路径上为该信道自动发送分集（延迟）信号。 对于所有信道采用公共分集发射机，而各个发射机用于相应话音信道中的正常发射信号。
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15.发明授权Error correcting decoder and decoding method for receivers in digital cellular communication systems 失效纠错数字蜂窝通信系统中接收机的解码和解码方法
公开(公告)号：US5606569A
公开(公告)日：1997-02-25
申请号：US601890
申请日：1996-02-15
CPC分类号： H03M13/154 , H03M13/09 , H03M13/2906 , H03M13/2915 , H03M13/293 , H03M13/455 , H04L1/005 , H04L1/0057 , H04L1/0065 , H03M13/1515
摘要： A cellular base station receiver uses a digital signal processor to decode receiver code words in an inner Reed-Solomon code. A list of code word estimates is generated by making different symbol erasure combinations. An outer cyclic redundancy code operates as an error detector for the word estimates. When a code word estimate is found to be error-free, it is accepted for output.
摘要翻译： 蜂窝基站接收机使用数字信号处理器来解码内部Reed-Solomon码中的接收码字。 通过进行不同的符号擦除组合来产生代码字估计的列表。 外循环冗余码用作词估计的误差检测器。 当代码字估计被发现是无错误时，它被接受用于输出。
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16.发明授权Cellular system having frequency plan and cell layout with reduced co-channel interference 失效蜂窝系统具有频率规划和小区布局，减少了同信道干扰
公开(公告)号：US5365571A
公开(公告)日：1994-11-15
申请号：US064997
申请日：1993-05-24
摘要： A cellular radio-telephone system has a plurality of cells each of which has S sectors. The cells are grouped into a plurality of clusters each of which has N adjoining cells. Each cell has a set of assigned system frequencies with respective frequency subsets assigned to its sectors so that N groups of co-channel cells exist with each co-channel cell group including one cell from each cluster having channel frequencies corresponding to those for its co-channel cell group. Respective base station antennas are located in the respective sectors of the respective cells, and each of the cell sectors has a plurality of subscriber station directional antennas disposed at predetermined locations within the sector for communication linkage with the associated base station antenna. The cells are generally formed in rows and columns and further are formed to provide a predetermined relative orientation pattern for co-channel cell sectors. Co-channel cells form a first cell tier around a preselected center co-channel cell with a common direction operative as a reference orientation direction for co-channel sectors therein. Co-channel sectors in successive co-channel cells about the first tier being successively oriented in alternating first and second directions with sectors rotated by at least one sector rotation from the reference direction in the clockwise or counter-clockwise direction.
摘要翻译： 蜂窝无线电话系统具有多个具有S个扇区的小区。 这些单元被分组成多个簇，每个簇具有N个相邻小区。 每个小区具有一组分配的系统频率，其中分配给其扇区的各个频率子集，使得存在每组共同信道小区的N组，每个同信道小区包括来自每个群的一个小区，其中信道频率对应于其共同信道小区， 通道细胞组。 相应的基站天线位于相应小区的相应扇区中，并且每个小区扇区具有设置在扇区内的预定位置处的多个订户站定向天线，用于与相关联的基站天线的通信连接。 电池通常以行和列形成，并且进一步形成为为共通道电池扇区提供预定的相对取向图案。 共信道小区围绕预选中心同信道小区形成第一小区层，其中共同方向作为参考取向方向作为其中的同信道扇区。 围绕第一层的连续共通道单元中的共同通道扇区在交替的第一和第二方向上连续定向，其中扇区从顺时针或逆时针方向上的参考方向旋转了至少一个扇区旋转。
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公开(公告)号：US20220182107A1
公开(公告)日：2022-06-09
申请号：US17451876
申请日：2021-10-22
IPC分类号： H04B7/0426 , H04B7/204 , H04B7/0408 , H04B7/06
摘要： A system and method for beamforming includes providing an antenna including feeds, a coverage area including service areas and data streams for each of the service areas; selecting a cluster of M feeds from the feeds; computing, with a GBBF processor (ground based beam former), M×N weights; generating M feed excitations by distributing the N data streams per the M×N weights; switching an array to transfer a respective one of the M feed excitations to a respective one of the M feeds; and beamforming, with the M feeds of the antenna, N beams. In the method, the N beams are each focused on a respective service area of each of the N data streams, the M×N weights improve the transmitting into the respective service area of each of the N data streams, and at least one of the N beams includes a portion of a plurality of the M feed excitations.
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公开(公告)号：US11184071B1
公开(公告)日：2021-11-23
申请号：US17247224
申请日：2020-12-04
IPC分类号： H04B7/06
摘要： A system and method for beamforming includes providing an antenna including feeds, a coverage area including service areas and data streams for each of the service areas; scheduling N data streams of the data streams, selecting a cluster of M feeds from the feeds; computing, with a GBBF processor (ground based beam former), M×N weights; generating M feed excitations by distributing the N data streams per the M×N weights; switching an array to transfer a respective one of the M feed excitations to a respective one of the M feeds; and beamforming, with the M feeds of the antenna, N beams. In the method, the N beams are each focused on a respective service area of each of the N data streams, the M×N weights improve the transmitting into the respective service area of each of the N data streams, and at least one of the N beams includes a portion of a plurality of the M feed excitations.
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公开(公告)号：US10555185B2
公开(公告)日：2020-02-04
申请号：US16054062
申请日：2018-08-03
IPC分类号： H01Q1/00 , H01Q21/00 , H04W16/28 , H01Q1/12 , H01Q3/26 , H01Q21/06 , H04B7/08 , H04B7/185 , H01Q1/28 , H01Q3/34 , H01Q21/22 , H04W16/26
摘要： A receive planar phased array antenna on a communications platform is used to estimate a pointing error of the antenna and to orient the antenna boresight towards the transmitter. A method for orienting the communications antenna includes: segmenting a receive phase array antenna into N sub-arrays with M-antenna elements in each sub-array; receiving, a known signal, by each of the M-antenna elements of at least four (4) of the N-sub-arrays; scanning in a direction of the known signal by applying a beam weight associated with each of the M elements in each of the at least 4-sub-arrays to obtain M-weighted signals for each of the at least 4-sub-arrays; combining the M-weighted signals for each of the at least 4-sub-arrays into signals A, B, C and D, respectively; generating an azimuth difference signal per a weighted sum of (A+B) and (C+D) and an elevation difference signal per a weighted sum of (A+C) and (B+D); computing the weights of the azimuth difference signal, such that the azimuth difference signals is driven to a zero signal; and computing the weights of the elevation difference signal, such that the elevation difference signal is driven to a zero signal.
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公开(公告)号：US20180359647A1
公开(公告)日：2018-12-13
申请号：US16054062
申请日：2018-08-03
IPC分类号： H04W16/28 , H04B7/185 , H01Q1/28 , H01Q21/06 , H01Q21/00 , H01Q3/26 , H01Q1/12 , H01Q3/34 , H01Q21/22 , H04W16/26 , H04B7/08
摘要： A system and method for orienting a communications antenna are disclosed. The method includes: segmenting a receive phase array antenna into N sub-arrays with M-antenna elements in each sub-array; receiving, a known signal, by each of the M-antenna elements of at least four (4) of the N-sub-arrays; scanning in a direction of the known signal by applying a beam weight associated with each of the M elements in each of the at least 4-sub-arrays to obtain M-weighted signals for each of the at least 4-sub-arrays; combining the M-weighted signals for each of the at least 4-sub-arrays into signals A, B, C and D, respectively; generating an azimuth difference signal per a weighted sum of (A+B) and (C+D) and an elevation difference signal per a weighted sum of (A+C) and (B+D); computing the weights of the azimuth difference signal, such that the azimuth difference signals is driven to a zero signal; and computing the weights of the elevation difference signal, such that the elevation difference signal is driven to a zero signal. N is greater than or equal to four (4) and M is greater than or equal to one (1).
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