公开(公告)号：US20040009785A1

公开(公告)日：2004-01-15

申请号：US10401115

申请日：2003-03-26

Applicant: Tantivy Communications, Inc.

Inventor： George R. Nelson JR. ,  James A. Proctor JR. ,  John E. Hoffmann ,  Antoine J. Rouphael

IPC: H04Q007/20 ,  H04B007/00 ,  H04B001/00

CPC classification number: H04W52/242 ,  H04L1/1607 ,  H04L12/5602 ,  H04L47/14 ,  H04L47/26 ,  H04L2001/0093 ,  H04W24/00 ,  H04W52/228 ,  H04W52/48 ,  H04W52/50 ,  H04W74/0825 ,  H04W74/0858

Abstract: In an illustrative embodiment of the present invention, a reference signal including pilot information is transmitted from a base station to one or multiple field units over a pilot channel. A message is also sent to the field units over a paging channel to indicate an effective radiated power level at which the reference signal is transmitted on the pilot channel. Based on a received power level of the reference signal at a field unit and the effective radiated power level of the reference signal, a forward path loss is estimated at the field unit for the forward link between the base station and field unit. Assuming the path loss in the reverse link is approximately the same as the estimated forward link path loss, the field unit can transmit, a reply message in the reverse link so that the base station generally receives a message at-a desired power level.

Abstract translation: 在本发明的说明性实施例中，包括导频信息的参考信号通过导频信道从基站发送到一个或多个场单元。 消息也通过寻呼信道发送到场单元，以指示在导频信道上发送参考信号的有效辐射功率电平。 基于场单位的参考信号的接收功率电平和参考信号的有效辐射功率电平，在用于基站和场单元之间的前向链路的场单元处估计正向路径损耗。 假设反向链路中的路径损耗与估计的前向链路路径损耗大致相同，则场单元可以在反向链路中发送应答消息，使得基站通常在期望功率电平上接收消息。

公开(公告)号：US20030048226A1

公开(公告)日：2003-03-13

申请号：US10146501

申请日：2002-05-14

Applicant: Tantivy Communications, Inc.

Inventor： Griffin K. Gothard ,  Bing Chiang ,  Christopher A. Snyder ,  Kenneth M. Gainey ,  James A. Proctor JR.

IPC: H01Q001/48 ,  H01Q021/00

CPC classification number: H01Q1/38 ,  H01Q3/24 ,  H01Q3/26 ,  H01Q9/28 ,  H01Q9/285 ,  H01Q9/40 ,  H01Q19/10 ,  H01Q21/061 ,  H01Q21/062 ,  H01Q21/29

Abstract: An antenna with a first conductive element positioned in an lower region of the antenna, and a second conductive element positioned above the first conductive element in an upper region of the antenna. One of the conductive elements is an active element that transmits and receives signals, while the other element is a ground element.

Abstract translation: 天线，其具有位于天线的下部区域中的第一导电元件，以及位于天线的上部区域中的第一导电元件上方的第二导电元件。 导电元件之一是发送和接收信号的有源元件，而另一元件是接地元件。

公开(公告)号：US20020036595A1

公开(公告)日：2002-03-28

申请号：US09846693

申请日：2001-05-01

Applicant: Tantivy Communications, Inc.

Inventor： Bing Chiang ,  James A. Proctor JR. ,  Griffin K. Gothard ,  Kenneth M. Gainey ,  Joe T. Richeson

IPC: H01Q003/24 ,  H01Q021/00

CPC classification number: H01Q3/242 ,  H01Q19/32 ,  H01Q21/205

Abstract: A directive antenna includes plural antenna elements in an antenna assemblage. A feed network connected to the antenna elements includes at least one switch to select a state of one of the antenna elements to be in an active state in response to a control signal. The other antenna elements are in a passive state, electrically coupled to an impedance to be in a reflective mode. The antenna elements in the passive state are electromagnetically coupled to the active antenna element, allowing the antenna assemblage to directionally transmit and receive signals. The directive antenna may further include an assisting switch associated with each antenna element to assist coupling the antenna elements, while in the passive state, to the respective impedances. The antenna assemblage may be circular for a 360null discrete scan in N directions, where N is the number of antenna elements. The directive antenna is suitable for use in a high data rate network having greater than 50 kbits per second data transfer rates, where the high data rate network may use CDMA2000, 1 eV-DO, 1Extreme, or other such protocol.

Abstract translation: 指示天线包括天线组合中的多个天线元件。 连接到天线元件的馈电网络包括至少一个开关，用于响应于控制信号选择一个天线元件处于活动状态的状态。 其他天线元件处于被动状态，电耦合到处于反射模式的阻抗。 处于被动状态的天线元件与有源天线元件电磁耦合，允许天线组件定向发射和接收信号。 指示天线还可以包括与每个天线元件相关联的辅助开关，以帮助天线元件在被动状态下耦合到相应的阻抗。 天线组合可以是N个方向上的360°离散扫描的圆形，其中N是天线元件的数量。 指令天线适用于高数据速率网络，每秒数据传输速率大于50 kbits，高数据速率网络可能使用CDMA2000,1 eV-DO，1Extreme或其他此类协议。

公开(公告)号：US20010026599A1

公开(公告)日：2001-10-04

申请号：US09766875

申请日：2001-01-19

Applicant: Tantivy Communications, Inc.

Inventor： John E. Hoffmann ,  George Rodney Nelson JR. ,  James A. Proctor JR. ,  Antoine J. Rouphael

IPC: H03D001/00 ,  H04L027/06 ,  H04B001/10

CPC classification number: H04L5/0046 ,  H04B1/707 ,  H04B2201/70701 ,  H04L7/041

Abstract: 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.

Abstract translation: 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。

公开(公告)号：US20040213176A1

公开(公告)日：2004-10-28

申请号：US10755874

申请日：2004-01-12

Applicant: Tantivy Communications, Inc.

Inventor： James A. Proctor JR.

IPC: H04Q007/00

CPC classification number: H04B7/2628 ,  H04B1/7075 ,  H04B1/70754 ,  H04B2001/70706 ,  H04B2201/70703 ,  H04B2201/70709 ,  H04B2201/70715 ,  H04J13/0022 ,  H04J13/004 ,  H04J13/16 ,  H04J13/18 ,  H04L1/0007 ,  H04L1/165 ,  H04L1/1809 ,  H04L7/06 ,  H04L25/14 ,  H04L27/2601 ,  H04Q11/0428 ,  H04Q2213/13098 ,  H04Q2213/13202 ,  H04Q2213/13204 ,  H04Q2213/13209 ,  H04Q2213/13216 ,  H04Q2213/1327 ,  H04Q2213/13298 ,  H04Q2213/13332 ,  H04Q2213/1336 ,  H04Q2213/13389 ,  H04W24/00 ,  H04W28/20 ,  H04W28/22 ,  H04W56/00 ,  H04W56/0045 ,  H04W56/0075 ,  H04W72/0413 ,  H04W72/044 ,  H04W72/0446 ,  H04W72/0453 ,  H04W72/0466 ,  H04W74/00 ,  H04W74/04 ,  H04W76/28 ,  H04W84/14

Abstract: A service option overlay for a CDMA wireless communication in which multiple allocatable subchannels are defined on a reverse link by assigning different code phases of a given long pseudonoise (PN) code to each subchannel. The instantaneous bandwidth needs of each on-line subscriber unit are then met by dynamically allocating none, one, or multiple subchannels on an as needed basis for each network layer connection. The system efficiently provides a relatively large number of virtual physical connections between the subscriber units and the base stations on the reverse link for extended idle periods such as when computers connected to the subscriber units are powered on, but not presently actively sending or receiving data. These maintenance subchannels permit the base station and the subscriber units to remain in phase and time synchronism in an idle mode and also request additional channels. This in turn allows fast acquisition of additional subchannels as needed by allocating new code phase subchannels. Preferably, the code phases of the new channels are assigned according to a predetermined code phase relationship with respect to the code phase of the corresponding maintenance subchannel.

Abstract translation: 一种用于CDMA无线通信的服务选项覆盖，其中通过向每个子信道分配给定长伪噪声（PN）码的不同码相位，在反向链路上定义多个可分配子信道。 然后通过根据需要基于每个网络层连接动态分配一个，一个或多个子信道来满足每个在线订户单元的瞬时带宽需求。 系统有效地在用户单元和反向链路上的基站之间提供相对大量的虚拟物理连接，用于延长的空闲周期，例如当连接到订户单元的计算机上电时，而不是当前主动发送或接收数据。 这些维护子信道允许基站和用户单元在空闲模式下保持同步和时间同步，并且还请求附加信道。 这又允许通过分配新的码相子信道来快速获取附加的子信道。 优选地，根据相应维护子信道的码相位的预定码相位关系来分配新信道的码相位。

公开(公告)号：US20040150568A1

公开(公告)日：2004-08-05

申请号：US10357276

申请日：2003-01-31

Applicant: Tantivy Communications, Inc.

Inventor： Bing Chiang ,  Griffin K. Gothard ,  Christopher A. Snyder ,  William R. Palmer ,  Michael Lynch ,  Thomas Gorsuch ,  Kenneth Gainey ,  James A. Proctor JR.

IPC: H01Q001/24 ,  H01Q021/12

CPC classification number: H01Q3/446 ,  H01Q1/24 ,  H01Q9/16 ,  H01Q9/30 ,  H01Q19/30 ,  H01Q19/32

Abstract: An antenna array that uses at least two passive antennas and one active antenna disposed above a ground plane, but electrically isolated from the ground plane, and a respective resonant strip positioned beneath each passive antenna. The passive antenna elements are positioned about the active element, and each of the at least two passive antenna elements is individually set to a reflective or a transmissive mode to change the characteristics of an input/output beam pattern of the antenna apparatus.

Abstract translation: 一种天线阵列，其使用至少两个无源天线和一个设置在接地平面上方但与接地平面电隔离的有源天线以及位于每个无源天线之下的相应的谐振条。 无源天线元件围绕有源元件定位，并且至少两个无源天线元件中的每一个单独设置为反射或透射模式，以改变天线装置的输入/输出波束图案的特性。

公开(公告)号：US20040125036A1

公开(公告)日：2004-07-01

申请号：US10664413

申请日：2003-09-17

Applicant: Tantivy Communications, Inc.

Inventor： Bing Chiang ,  Kenneth M. Gainey ,  James A. Proctor JR. ,  Antoine J. Rouphael ,  Griffin K. Gothard ,  Michael J. Lynch

IPC: H01Q003/00

CPC classification number: H01Q3/2641 ,  H01Q1/22 ,  H01Q1/2258 ,  H01Q9/16 ,  H01Q19/26 ,  H01Q19/32 ,  H01Q21/08 ,  H01Q21/20 ,  H01Q21/29

Abstract: An antenna assembly includes at least two active or main radiating omni-directional antenna elements arranged with at least one beam control or passive antenna element used as a reflector. The beam control antenna element(s) may have multiple reactance elements that can electrically terminate it to adjust the input or output beam pattern(s) produced by the combination of the active antenna elements and the beam control antenna element(s). More specifically, the beam control antenna element(s) may be coupled to different terminating reactances to change beam characteristics, such as the directivity and angular beamwidth. Processing may be employed to select which terminating reactance to use. Consequently, the radiator pattern of the antenna can be more easily directed towards a specific target receiver/transmitter, reduce signal-to-noise interference levels, and/or increase gain by using Radio Frequency (RF), Intermediate Frequency (IF), or baseband processing. A Multiple-Input, Multiple-Output (MIMO) processing technique may be employed to operate the antenna assembly with simultaneous beam patterns.

Abstract translation: 天线组件包括至少两个有源或主辐射全向天线元件，其布置有用作反射器的至少一个光束控制或无源天线元件。 波束控制天线元件可以具有多个电抗元件，其可以电气端接它，以调节由有源天线元件和波束控制天线元件的组合产生的输入或输出波束图案。 更具体地，波束控制天线元件可以耦合到不同的终止电抗以改变诸如方向性和角波束宽度的波束特性。 可以使用处理来选择要使用的终止电抗。 因此，通过使用射频（RF），中频（IF）或更高的频率，可以更容易地将天线的辐射器模式引向特定目标接收器/发射器，降低信噪比干扰电平和/或增加增益 基带处理。 可以采用多输入多输出（MIMO）处理技术来操作具有同时波束图案的天线组件。

公开(公告)号：US20030060224A1

公开(公告)日：2003-03-27

申请号：US09792870

申请日：2001-02-23

Applicant: Tantivy Communications, Inc.

Inventor： George R. Nelson JR. ,  James A. Proctor JR. ,  John E. Hoffmann ,  Antoine J. Rouphael

IPC: H04B001/00

CPC classification number: H04W52/242 ,  H04L1/1607 ,  H04L12/5602 ,  H04L47/14 ,  H04L47/26 ,  H04L2001/0093 ,  H04W24/00 ,  H04W52/228 ,  H04W52/48 ,  H04W52/50 ,  H04W74/0825 ,  H04W74/0858

Abstract: In an illustrative embodiment of the present invention, a reference signal including pilot information is transmitted from a base station to one or multiple field units over a pilot channel. A message is also sent to the field units over a paging channel to indicate an effective radiated power level at which the reference signal is transmitted on the pilot channel. Based on a received power level of the reference signal at a field unit and the effective radiated power level of the reference signal, a forward path loss is estimated at the field unit for the forward link between the base station and field unit. Assuming the path loss in the reverse link is approximately the same as the estimated forward link path loss, the field unit can transmit a reply message in the reverse link so that the base station generally receives a message at a desired power level.

Abstract translation: 在本发明的说明性实施例中，包括导频信息的参考信号通过导频信道从基站发送到一个或多个场单元。 消息也通过寻呼信道发送到场单元，以指示在导频信道上发送参考信号的有效辐射功率电平。 基于场单位的参考信号的接收功率电平和参考信号的有效辐射功率电平，在用于基站和场单元之间的前向链路的场单元处估计正向路径损耗。 假设反向链路中的路径损耗与估计的前向链路路径损耗大致相同，则场单元可以在反向链路中发送应答消息，使得基站通常以期望功率电平接收消息。

公开(公告)号：US20030048770A1

公开(公告)日：2003-03-13

申请号：US09952198

申请日：2001-09-13

Applicant: Tantivy Communications, Inc.

Inventor： James A. Proctor JR.

IPC: H04J003/24 ,  H01Q003/22

CPC classification number: H04W16/28 ,  H01Q3/2605 ,  H01Q25/002 ,  H04B7/0608

Abstract: An adaptive antenna signal identification process to provide increased interference rejection in a wireless data network such as a wireless Local Area Network (LAN). The adaptive antenna is located at an access point and can be steered to various angle of arrival orientations with respect to received signals. Associated radio receiving equipment utilizes two distinct signal detection modes. In a first mode, the directional antenna array is set to have an omni-directional gain pattern. In this mode, certain identification parameters of an initial portion of a received signal are detected, such as a source identifier. If the received signal has not been previously detected, then the antenna array is scanned determine a direction setting that provides a best received signal metric. Once the best directional setting for the received signal, that setting is saved for future use in receiving the same signal. If the received signal has been previously detected, the system instead will steer the directional antenna to the last known best direction for reception for the particular detected signal. As further portions of the same signal are received, such as payload portions of a data frame, the directional antenna array can continue to scan potential new best angles. When the invention is deployed in a relay function, where messages received from a first node are to be forwarded to a second node, the recorded direction of its best reception is retrieved for the second node and used when the antenna array is used to transmit the signal to the second node. Storage of the best antenna angle for propagation to neighbor nodes can be handled by control functions in a manner that is analogous to other router lookup tables, such as being contained in a lookup table that stores IP addresses.

Abstract translation: 一种在诸如无线局域网（LAN）的无线数据网络中提供增强的干扰抑制的自适应天线信号识别过程。 自适应天线位于接入点处，并且可以相对于接收到的信号转向不同的到达方位角。 相关无线电接收设备利用两种不同的信号检测模式。 在第一模式中，定向天线阵列被设置为具有全向增益模式。 在该模式中，检测接收信号的初始部分的某些识别参数，例如源标识符。 如果接收到的信号没有被先前检测到，则天线阵列被扫描确定提供最佳接收信号度量的方向设置。 一旦获得接收信号的最佳方向设置，该设置将被保存以备将来用于接收相同的信号。 如果先前已经检测到接收到的信号，则系统将引导定向天线到最后已知的最佳方向以便接收特定的检测信号。 由于接收到相同信号的更多部分，例如数据帧的有效载荷部分，定向天线阵列可以继续扫描潜在的新的最佳角度。 当本发明部署在中继功能中，其中从第一节点接收的消息将被转发到第二节点时，为第二节点检索其最佳接收的记录方向，并且当天线阵列用于发送时 信号到第二个节点。 用于传播到邻居节点的最佳天线角度的存储可以以类似于其他路由器查找表的方式由控制功能来处理，诸如被包含在存储IP地址的查找表中。

公开(公告)号：US20020118649A1

公开(公告)日：2002-08-29

申请号：US09777555

申请日：2001-02-05

Applicant: Tantivy Communications, Inc.

Inventor： Kevin L. Farley ,  James A. Proctor JR.

IPC: H04J003/24 ,  H04L012/26

CPC classification number: 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

Abstract: 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, which conform to a transport layer protocol such as TCP, UDP, and RSTP, and include 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 that are optimal to the type of data being transmitted over the link.

Abstract translation: 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。 分组在通过链路互连的节点之间的流中传输，所述链路符合诸如TCP，UDP和RSTP之类的传输层协议，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，这些链路控制参数对于通过链路传输的数据类型是最佳的。