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1.发明申请METHOD FOR SEARCHING PILOT SIGNALS TO SYNCHRONIZE A CDMA RECEIVER WITH AN ASSOCIATED TRANSMITTER 有权搜索引航信号以同步相关发射机的CDMA接收机的方法公开(公告)号：US20110170493A1
公开(公告)日：2011-07-14
申请号：US13073594
申请日：2011-03-28
IPC分类号： H04W40/00
CPC分类号： H04W56/001 , H04B1/7075 , H04B1/70775 , H04B1/7103 , H04B7/086 , H04B2201/70701 , H04L27/2273 , H04L2027/0057 , H04L2027/0087
摘要： A method for synchronizing a CDMA receiver to a transmitter when an adaptive antenna is utilized to receive transmitted data, wherein a receiving antenna system is adapted between a 360° reception angle pattern (i.e., an omni-directional pattern) and a fixed reception angle (i.e., a directional pattern) by permitting the receiver to identify a pilot signal having the largest magnitude. The receiver minimizes interference from other pilot signals by steering antenna pattern nulls toward other transmitters. As a result, the time required for the receiver to acquire a valid pilot signal is significantly reduced.
摘要翻译： 一种当使用自适应天线来接收发射数据时将CDMA接收机同步到发射机的方法，其中接收天线系统适应于360°接收角度模式（即，全向模式）和固定接收角度 即，方向图），通过允许接收机识别具有最大幅度的导频信号。 接收器通过向其他发射机转向天线图形零点来最小化来自其他导频信号的干扰。 结果，接收机获取有效导频信号所需的时间显着减少。
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公开(公告)号：US20090097455A1
公开(公告)日：2009-04-16
申请号：US12339969
申请日：2008-12-19
IPC分类号： H04B7/216
CPC分类号： H04L5/0046 , H04B1/707 , H04B2201/70701 , H04L7/041
摘要： A technique for efficient implementation of pilot signals on a reverse link in a wireless communication system. An access channel is defined for the reverse link such that within each frame, or epoch, a portion is dedicated to sending only pilot symbols. Another portion of the frame is reserved for sending mostly data symbols; however, within this second portion of the frame, additional pilot symbols are interleaved among the data symbols. The pilot symbol or preamble portion of the access channel frame allows for efficient acquisition of the access signal at the base station, while providing a timing reference for determining the effects of multipath fading. In particular, a pilot correlation filter provides a phase estimate from the pilot symbols in the preamble portion, which is then used to decode the data symbols in the payload portion. An access acquisition portion of the receiver uses the phase estimates provided by the pilot correlation filter to process the output of a data symbol correlation filter. The additional pilot symbols embedded in the payload portion are used in a cross product operation to further resolve the effects of multipath fading.
摘要翻译： 一种在无线通信系统中在反向链路上有效实现导频信号的技术。 为反向链路定义了一个接入信道，使得在每个帧或时期内，一部分专用于仅发送导频符号。 帧的另一部分保留用于主要发送数据符号; 然而，在帧的该第二部分内，在数据符号之间交织附加的导频符号。 访问信道帧的导频符号或前导码部分允许在基站处有效地获取接入信号，同时提供用于确定多径衰落的影响的定时参考。 具体地，导频相关滤波器从前导码部分中的导频符号提供相位估计，然后该导频符号用于解码有效载荷部分中的数据符号。 接收机的访问获取部分使用由导频相关滤波器提供的相位估计来处理数据符号相关滤波器的输出。 嵌入在有效载荷部分中的附加导频符号用于交叉乘积运算，以进一步解决多路径衰落的影响。
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公开(公告)号：US20120087364A1
公开(公告)日：2012-04-12
申请号：US13311151
申请日：2011-12-05
CPC分类号： H04L5/005 , H04B1/707 , H04B7/2628 , H04B2201/70701 , H04L1/0041 , H04L1/0063 , H04L1/0065 , H04L1/0066 , H04L1/0071 , H04L5/0048 , H04L27/183 , H04L27/2657 , H04L27/2662
摘要： A technique for encoding digital communication signals. Data symbols are augmented in pilot symbols inserted at predetermined positions. The pilot augmented sequence is then fed to a deterministic error correction block encoder, such as a turbo product coder, to output a coded sequence. The symbols in the error correction encoded sequence are then rearranged to ensure that the output symbols derived from input pilot symbols are located at regular, predetermined positions. As a result, channel encoding schemes can more easily be used which benefits from power of two length block sizes.
摘要翻译： 一种用于编码数字通信信号的技术。 数据符号在插入预定位置的导频符号中增加。 导频增强序列然后被馈送到诸如turbo乘积编码器的确定性纠错块编码器，以输出编码序列。 然后重新排列纠错编码序列中的符号，以确保从输入导频符号导出的输出符号位于规则的预定位置。 结果，可以更容易地使用信道编码方案，其受益于两个长度块大小的功率。
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公开(公告)号：US20120093131A1
公开(公告)日：2012-04-19
申请号：US13335575
申请日：2011-12-22
IPC分类号： H04W72/04
CPC分类号： H04W56/0005 , H04B7/2668 , H04W56/0045 , H04W56/005
摘要： A method for use in a field unit operable in a wireless communication network. The method includes receiving an indication of a plurality of access identifiers from a base station. The field unit selects an access identifier from the plurality of access identifiers received from the base station. The selected access identifier is associated with a type of field unit request. The field unit transmits the selected access identifier to the base station. The field unit then receives a message from the base station. The message is based on the transmitted selected access identifier. The message contains a timing adjustment that indicates an amount to advance timing. A corresponding field unit apparatus, a base station method, and corresponding base station apparatus is also disclosed.
摘要翻译： 一种在无线通信网络中可操作的现场单元中使用的方法。 该方法包括从基站接收多个接入标识符的指示。 场单元从从基站接收的多个接入标识符中选择接入标识符。 所选择的访问标识符与一种字段单元请求相关联。 现场单元将所选择的接入标识符发送到基站。 然后，现场单元从基站接收消息。 消息基于发送的所选访问标识符。 该消息包含指示提前时间的量的时序调整。 还公开了相应的现场单元设备，基站方法和相应的基站设备。
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公开(公告)号：US20090116469A1
公开(公告)日：2009-05-07
申请号：US12290755
申请日：2008-11-03
IPC分类号： H04J13/00
CPC分类号： H04L5/005 , H04B1/707 , H04B7/2628 , H04B2201/70701 , H04L1/0041 , H04L1/0063 , H04L1/0065 , H04L1/0066 , H04L1/0071 , H04L5/0048 , H04L27/183 , H04L27/2657 , H04L27/2662
摘要： A technique for encoding digital communication signals. Data symbols are augmented in pilot symbols inserted at predetermined positions. The pilot augmented sequence is then fed to a deterministic error correction block encoder, such as a turbo product coder, to output a coded sequence. The symbols in the error correction encoded sequence are then rearranged to ensure that the output symbols derived from input pilot symbols are located at regular, predetermined positions. As a result, channel encoding schemes can more easily be used which benefits from power of two length block sizes.
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6.发明申请Method for using a non-orthogonal pilot signal with data channel interference cancellation 审中-公开使用具有数据信道干扰消除的非正交导频信号的方法公开(公告)号：US20090060005A1
公开(公告)日：2009-03-05
申请号：US12284426
申请日：2008-09-22
CPC分类号： H04W72/042 , H04B7/2628 , H04W8/26 , H04W68/00 , H04W72/0446 , H04W72/12 , H04W76/10
摘要： A system and method for encoding/decoding data channels in a CDMA system having data channel interference cancellation, wherein data channel interference cancellation is used to remove unwanted non-orthogonal pilot signal components which are present within a demodulated data signal. This is accomplished by regenerating interference terms with respect to the non-orthogonal pilot signal and subtracting them from the demodulated data signal.
摘要翻译： 一种用于在具有数据信道干扰消除的CDMA系统中对数据信道进行编码/解码的系统和方法，其中数据信道干扰消除用于去除存在于解调数据信号内的不需要的非正交导频信号分量。 这是通过对非正交导频信号再生干扰项并从解调数据信号中减去它们来实现的。
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公开(公告)号：US20120250798A1
公开(公告)日：2012-10-04
申请号：US13493575
申请日：2012-06-11
申请人： John E. Hoffmann , George Rodney Nelson, JR. , Daniel I. Riley , Antoine J. Rouphael , James A. Proctor, JR.
发明人： John E. Hoffmann , George Rodney Nelson, JR. , Daniel I. Riley , Antoine J. Rouphael , James A. Proctor, JR.
CPC分类号： H04L1/0048 , G11B20/1833 , H03M13/35 , H04B1/707 , H04J13/00 , H04L1/0003 , H04L1/0007 , H04L1/0009 , H04L1/0025 , H04L1/1809 , H04L1/1816 , H04L25/14 , H04L27/22 , H04L27/38 , H04L2001/0093 , H04L2001/0096
摘要： The present invention provides for making code rate adjustments and modulation type adjustments in a pseudonoise (PN) encoded CDMA system. Coding rate adjustments may be made by changing the number of information bits per symbol, or Forward Error Code (FEC) coding rate. A forward error correction (FEC) block size is maintained at a constant amount. Therefore, as the number of information bits per symbol are increased, an integer multiple of bits per epoch is always maintained. The scheme permits for a greater flexibility and selection of effective data rates providing information bit rates ranging from, for example, approximately 50 kilobits per second to over 5 mega bits per second (Mbps) in one preferred embodiment.
摘要翻译： 本发明提供了在伪噪声（PN）编码的CDMA系统中进行码率调整和调制类型调整。 可以通过改变每个符号的信息比特数或转发错误码（FEC）编码率来进行编码速率调整。 前向纠错（FEC）块大小保持恒定的量。 因此，随着每个符号的信息位的数量增加，始终保持每个时期的位的整数倍。 在一个优选实施例中，该方案允许更大的灵活性和有效数据速率的选择，从而提供从例如大约50千比特每秒到超过5兆比特每秒（Mbps）的信息比特率。
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8.发明申请METHOD FOR SEARCHING PILOT SIGNALS TO SYNCHRONIZE A CDMA RECEIVER WITH AN ASSOCIATED TRANSMITTER 审中-公开搜索引航信号以同步相关发射机的CDMA接收机的方法公开(公告)号：US20130121251A1
公开(公告)日：2013-05-16
申请号：US13680845
申请日：2012-11-19
IPC分类号： H04W56/00
CPC分类号： H04W56/001 , H04B1/7075 , H04B1/70775 , H04B1/7103 , H04B7/086 , H04B2201/70701 , H04L27/2273 , H04L2027/0057 , H04L2027/0087
摘要： A wireless transmit-receive unit includes an antenna, detection circuitry configured to detect a pseudorandom (PN) offset of a pilot signal received by the antenna while the antenna is adapted to an omnidirectional receive pattern, and monitoring circuitry configured to monitor a received signal strength of the pilot signal as a directional receive pattern of the antenna is steered in order to determine an azimuth angle of the directional pattern that maximizes the pilot signal at the detected PN offset.
摘要翻译： 无线发射 - 接收单元包括天线，检测电路，被配置为检测由天线接收的导频信号的伪随机（PN）偏移，同时天线适于全向接收模式;以及监视电路，被配置为监视接收信号强度 作为天线的定向接收模式的导频信号被控制，以便确定在检测到的PN偏移处使导频信号最大化的方向图的方位角。
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公开(公告)号：US20150229743A1
公开(公告)日：2015-08-13
申请号：US14695446
申请日：2015-04-24
CPC分类号： H04L69/22 , H04L1/0001 , H04L1/0083 , H04L2001/0093 , H04W28/18 , H04W72/04 , H04W72/0446
摘要： A method and apparatus are used to support the transmission of data to a user over multiple allocated data channels. Data packets are transmitted in timeslots of the allocated data channels to corresponding target receivers without the need for explicitly assigning particular time-slots to a target user well in advance of transmitting any data packets in the time-slots. Instead, each data packet transmitted in a time-slot includes a header label or preamble indicating to which of multiple possible receivers a data packet is directed. The preamble also preferably includes decoding information indicating how a corresponding data payload of the data packet is to be processed for recapturing transmitted raw data.
摘要翻译： 一种方法和装置用于支持通过多个分配的数据信道向用户发送数据。 数据分组在分配的数据信道的时隙中被发送到相应的目标接收机，而不需要在时隙中发送任何数据分组之前向目标用户明确地分配特定的时隙。 相反，在时隙中发送的每个数据分组包括指示数据分组指向的多个可能的接收机中的哪一个的报头标签或前导码。 前导码还优选地包括指示如何处理数据分组的相应数据有效载荷以用于重新捕获发送的原始数据的解码信息。
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公开(公告)号：US20110216707A1
公开(公告)日：2011-09-08
申请号：US13108481
申请日：2011-05-16
IPC分类号： H04W4/00
CPC分类号： H04W28/0268 , H04L1/0015 , H04L1/0017 , H04L1/18 , H04L43/00 , H04L43/0829 , H04L43/0852 , H04L43/087 , H04L47/2416 , H04L47/2441 , H04L65/60 , H04L65/80 , H04L69/16 , H04L69/165 , H04L69/18 , H04W24/00 , H04W28/06 , H04W28/18 , H04W80/00
摘要： A packet data system such as a TCP/IP network transmits packets containing a variety of data types along links in the network. Packets are transmitted in a stream between nodes interconnected by the links connections which conform to a transport layer protocol such as TCP, UDP, and RSTP, and includes wireless links, which transmit packets using a radio frequency (RF) medium. Typical protocols, however, are usually developed to optimize throughput and minimize data error and loss over wired links, and do not lend themselves well to a wireless link. By examining the data in a packet, performance characteristics such as a port number are determined. The performance characteristics indicate the application type, and therefore, the data type, of the packets carried on the connection. Since certain data types, such as streaming audio and video, are more loss tolerant, determination of the data type is used to compute link control parameters for the wireless link which that are optimal to the type of data being transmitted over the link.
摘要翻译： 诸如TCP / IP网络的分组数据系统沿着网络中的链路发送包含各种数据类型的分组。 分组在通过符合诸如TCP，UDP和RSTP之类的传输层协议的链路连接互连的节点之间的流中传输，并且包括使用射频（RF）介质传输分组的无线链路。 然而，通常开发典型的协议是为了优化吞吐量，并通过有线链路最小化数据错误和损失，并且不适合于无线链路。 通过检查数据包中的数据，确定端口号等性能特征。 性能特征表示连接上携带的分组的应用类型，因此表示数据类型。 由于诸如流式音频和视频之类的某些数据类型具有更大的容错能力，所以使用数据类型的确定来计算无线链路的链路控制参数，这对通过链路传输的数据类型是最佳的。
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