公开(公告)号：US20040033817A1

公开(公告)日：2004-02-19

申请号：US10378565

申请日：2003-03-03

Applicant: Tantivy Communications, Inc.

Inventor： Thomas E. Gorsuch ,  John A. Regnier ,  John E. Hoffmann ,  George Rodney Nelson JR. ,  James A. Proctor JR.

IPC: H04B001/02

CPC classification number: H01Q1/2275 ,  H01Q1/22 ,  H01Q1/2258 ,  H01Q1/242 ,  H01Q3/2605 ,  H01Q19/32

Abstract: An antenna control interface is integrated with common integrated circuit components, such as radio transceiver or baseband modem signal processing control logic. The antenna control interface controls the operation of an adaptive antenna array used with wireless communication system devices.

Abstract translation: 天线控制接口与通用集成电路组件集成，如无线电收发器或基带调制解调器信号处理控制逻辑。 天线控制接口控制与无线通信系统设备一起使用的自适应天线阵列的操作。

公开(公告)号：US20030086399A1

公开(公告)日：2003-05-08

申请号：US10171080

申请日：2002-06-12

Applicant: Tantivy Communications, Inc.

Inventor： James A. Proctor JR.

IPC: H04L012/66 ,  H04B007/00

CPC classification number: H04L1/165 ,  H04B1/707 ,  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 ,  H04W8/005 ,  H04W24/00 ,  H04W28/26 ,  H04W48/08 ,  H04W52/16 ,  H04W52/325 ,  H04W52/50 ,  H04W74/04 ,  H04W74/0866 ,  H04W76/10 ,  H04W76/28 ,  H04W84/14 ,  H04W88/02

Abstract: A communication system, such as a wireless CDMA system, detects markers with fewer errors by having field units transmit the markers at different power levels (e.g., 9 dB for one marker and 11 dB for another marker). The difference in power levels of the markers allows the base station to identify the request markers using alternative criteria with a low probability of error, where the alternative criteria may include comparing the markers to respective energy level thresholds, monitoring occupancy of time slots, occupancy of mutually exclusive code channels, or combinations thereof. For example, in one particular embodiment, a request marker, which is generally a high priority marker, is transmitted with higher power, which improves the probability of detection and reduces the probability of false detection of the request marker.

Abstract translation: 诸如无线CDMA系统的通信系统通过使现场单元以不同的功率电平（例如，一个标记为9dB，另一个标记为11dB）来发送标记，来检测具有较少错误的标记。 标记的功率水平的差异允许基站使用具有低概率误差的替代标准来识别请求标记，其中替代标准可以包括将标记与相应的能级阈值进行比较，监视时隙的占用， 相互排斥的代码信道或其组合。 例如，在一个具体实施例中，通常是高优先级标记的请求标记以更高的功率发送，这提高了检测的概率，并降低了请求标记的错误检测的可能性。

公开(公告)号：US20030027587A1

公开(公告)日：2003-02-06

申请号：US10170015

申请日：2002-06-11

Applicant: Tantivy Communications, Inc.

Inventor： James A. Proctor JR.

IPC: H04Q007/20

CPC classification number: H04W52/16 ,  H04W28/0221 ,  H04W40/08 ,  H04W52/0219 ,  H04W52/0238 ,  H04W52/0245 ,  H04W52/241 ,  H04W52/243 ,  H04W52/248 ,  H04W52/287 ,  H04W52/322 ,  H04W52/325 ,  H04W52/44 ,  Y02D70/00 ,  Y02D70/1222

Abstract: In a wireless communication system, wireless channels are maintained for communication between users and the base station. Often, a wireless user may be switched on, but not actively sending or receiving data. Accordingly, wireless users may be nullactive,null and currently allocated a wireless traffic channel for sending or receiving, or nullidle,null and not currently sending or receiving. A wireless user may be maintained in an idle state through a periodic sequence of synchronization messages. A method for controlling a power level of a wireless message includes determining the presence of data to be transmitted, and adjusting the power level of the synchronization message depending on the presence of data. The synchronization messages corresponding to the idle state employ a lower power level than the active state transmissions which employ a higher power level. The system therefore controls the power accordingly such that synchronization messages are sent at a lower power level when no data is present, thereby reducing power consumption and interference.

Abstract translation: 在无线通信系统中，维持无线信道用于用户和基站之间的通信。 通常，无线用户可以被接通，而不是主动地发送或接收数据。 因此，无线用户可能是“活动的”，并且当前分配了用于发送或接收或“空闲”的无线业务信道，而不是当前的发送或接收。 可以通过周期性同步消息序列将无线用户维持在空闲状态。 用于控制无线消息的功率电平的方法包括确定要发送的数据的存在，以及根据数据的存在来调整同步消息的功率电平。 对应于空闲状态的同步消息采用比采用较高功率电平的有效状态传输更低的功率电平。 因此，系统相应地控制功率，使得当没有数据存在时，以较低的功率电平发送同步消息，从而降低功耗和干扰。

公开(公告)号：US20020183089A1

公开(公告)日：2002-12-05

申请号：US09871154

申请日：2001-05-31

Applicant: TANTIVY COMMUNICATIONS, INC.

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

IPC: H04Q007/20

CPC classification number: H04W99/00 ,  H04W8/18 ,  H04W76/10

Abstract: An improved arrangement is described for signaling enhanced capabilities of a wireless data communication system to a dual-mode wireless handset seeking access to such capabilities and normally operating in a first (non-enhanced) mode. The arrangement, which is especially advantageous for ascertaining operating mode capabilities of a new cellsite to which the handset is being handed off from an existing cellsite, includes a separate capabilities server that is associated with the system and contains a data base populated with information indicative of such capabilities. The handset generates a suitable query message which is transmitted to the data base in the first mode after the handoff to retrieve the capability information for the new cellsite location. The handset is switched from the first mode to the second (enhanced) mode for post-handoff operation if the retrieved capability information indicates that the new cellsite is capable of operation in the enhanced mode.

Abstract translation: 描述了一种改进的布置，用于将无线数据通信系统的增强能力信令发送到寻求接入这种能力并且通常以第一（非增强）模式操作的双模式无线手持机。 特别有利于确定手机正在从现有小区迁移的新小区的操作模式能力的安排包括与系统相关联的单独的能力服务器，并且包含填充有指示 这样的能力。 手机产生合适的查询消息，该消息在切换之后以第一模式发送到数据库，以检索新小区位置的能力信息。 如果检索到的能力信息指示新小区能够以增强模式操作，则手机从第一模式切换到第二（增强）模式用于切换后操作。

公开(公告)号：US20020163898A1

公开(公告)日：2002-11-07

申请号：US10179121

申请日：2002-06-24

Applicant: Tantivy Communications, Inc.

Inventor： James A. Proctor JR.

IPC: H04B007/216

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. 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.

公开(公告)号：US20020159395A1

公开(公告)日：2002-10-31

申请号：US09792637

申请日：2001-02-23

Applicant: Tantivy Communications, Inc.

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

IPC: H04L012/26

CPC classification number: H04W72/042 ,  H04J13/00 ,  H04J13/0003 ,  H04L5/22 ,  H04W24/00 ,  H04W28/22 ,  H04W48/08 ,  H04W52/24 ,  H04W52/26 ,  H04W52/365 ,  H04W72/0406 ,  H04W72/0446 ,  H04W72/0466 ,  H04W72/0473 ,  H04W72/048 ,  H04W72/1289 ,  Y02D70/00

Abstract: Data rate allocation decisions are made for a communications channel, such as a wireless reverse link connection. A first parameter used in this determination is a path loss, which is determined by the following process. First, a message is sent from a first station to a second station, such as on a paging channel. The message indicates a forward Effective Radiated Power (ERP) of a pilot signal transmitted by the first station. The second station then determines the received signal strength of this pilot signal, taking into account receiver gains. The path loss can then be estimated by the second station as the difference between the forward ERP data value that it received and the detected received pilot power. The second station also then preferably determines a transmit power level when transmitting a message back to the first station. This transmit power level information is encoded as a digital data word together with the forward path loss information as calculated by the first station. Upon receipt of these two pieces of information by the first station, the forward path loss estimate as calculated by the second station, and the output power value of the second station, the first station can then determine the amount of excess power available at the field unit. This excess power difference is indicative of the amount of dynamic range available in the transmit power amplifier in the particular second station. With this information, the first station can then make a determination as to whether coding rates which require a higher dynamic range will be acceptable for use by the particular second station.

Abstract translation: 对于诸如无线反向链路连接的通信信道进行数据速率分配决定。 在该确定中使用的第一参数是通过以下过程确定的路径损耗。 首先，消息从第一站发送到第二站，例如在寻呼信道上。 该消息指示由第一站发送的导频信号的前向有效辐射功率（ERP）。 然后，第二站根据接收机增益确定该导频信号的接收信号强度。 然后可以由第二站估计路径损耗作为其接收到的前向ERP数据值与检测到的接收导频功率之间的差值。 然后，当发送消息回到第一站时，第二站优选地确定发射功率电平。 该发送功率电平信息与由第一电台计算出的正向路径损耗信息一起被编码为数字数据字。 在由第一站接收到这两条信息时，由第二站计算出的正向路径损耗估计值和第二站的输出功率值，则第一站然后可以确定在现场可用的多余的功率量 单元。 该过剩功率差表示特定第二站中的发射功率放大器中可用的动态范围的量。 利用该信息，第一站然后可以确定需要更高动态范围的编码率是否可被特定的第二站使用。

公开(公告)号：US20020155829A1

公开(公告)日：2002-10-24

申请号：US09841695

申请日：2001-04-24

Applicant: Tantivy Communications, Inc.

Inventor： James A. Proctor JR. ,  Anthony Francesca

IPC: H04Q007/20

CPC classification number: H04W28/18 ,  H04B7/0617 ,  H04L41/12 ,  H04W16/14 ,  H04W16/24 ,  H04W52/42 ,  H04W60/00

Abstract: In a wireless telecommunications network, wireless transmissions are carried via an RF medium between users and a central wireless transceiver, or base station processor. A subscriber access unit connected to a user device such as a user PC is employed to transmit wireless messages to and from the base station processor. Multiple, simultaneous wireless transmissions to the base station from different subscriber access units can have a tendency to interfere with each other. Subscriber access units employing an omnidirectional antenna or which are highly mobile will tend to experience more interference than stationary users or subscriber access units employing a directional antenna. The allocation of wireless transmission resources to retransmit wireless messages over a lossy link can have a detrimental effect on wireless resources available for other users. A system which allows a subscriber access unit to register device capabilities with a base station processor to determine the degree to which a particular subscriber access unit may be prone to interference provides computation and adjustment of transmission constraints for each subscriber access unit accordingly to maximize throughput.

Abstract translation: 在无线电信网络中，通过用户与中央无线收发信机或基站处理器之间的RF介质携带无线传输。 连接到诸如用户PC的用户设备的用户接入单元用于向基站处理器发送无线消息。 从不同的用户接入单元到基站的多个同时的无线传输可能具有彼此干扰的倾向。 使用全向天线或高度移动的订户接入单元将趋向于比采用定向天线的固定用户或用户接入单元更多的干扰。 通过有损链路重传无线消息的无线传输资源的分配可能对其他用户可用的无线资源产生不利影响。 允许用户接入单元向基站处理器注册设备能力以确定特定用户接入单元可能容易受干扰的程度的系统相应地提供每个用户接入单元的传输约束的计算和调整，以最大化吞吐量。

公开(公告)号：US20020080024A1

公开(公告)日：2002-06-27

申请号：US09775305

申请日：2001-02-01

Applicant: Tantivy Communications, Inc.

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

IPC: H04B007/01

CPC classification number: H04W56/0085 ,  H04B7/2637

Abstract: Multiple field units in a CDMA system are synchronized for communication with a base station using shared forward and reverse link channels. In an illustrative embodiment, each field unit is assigned a time slot in a forward link channel to receive messages from the base station. Likewise, each field unit is assigned a time slot on a common reverse link channel for transmitting messages to the base station. Timing alignment and power level control among each of many field units and the base station is achieved by analyzing messages received at the base station in a corresponding time slot as transmitted by each field unit. Thereafter, a message is transmitted from the base station in a corresponding time slot to a particular field unit for adjusting its timing or power level so that future messages transmitted from the field unit are received in the appropriate time slot at the base station at a desired power level. In this way, minimal resources are deployed to maintain communication and precise synchronization between a base station and each of multiple users, minimizing collisions between field units transmitting in adjacent time slots on the reverse link. This method reduces the frequency a field unit must rely on the use of a slotted aloha random access channel according to IS-95.

Abstract translation: CDMA系统中的多个场单元被同步，以使用共享的前向和反向链路信道与基站进行通信。 在说明性实施例中，每个现场单元在前向链路信道中分配时隙以从基站接收消息。 类似地，每个现场单元在公共反向链路信道上分配一个时隙，用于向基站发送消息。 通过在每个场单元发送的相应时隙中分析在基站处接收的消息来实现许多场单元和基站中的每一个中的定时对准和功率电平控制。 此后，在对应的时隙中从基站发送消息到特定的现场单元，以调整其定时或功率电平，使得在现场单元发送的未来消息在基站的适当时隙中以期望的 能量等级。 以这种方式，部署最小资源以维持基站与多个用户中的每一个之间的通信和精确同步，从而最小化在反向链路上的相邻时隙中发送的现场单元之间的冲突。 该方法降低了场单元必须依赖于使用根据IS-95的时隙aloha随机接入信道的频率。

公开(公告)号：US20020071409A1

公开(公告)日：2002-06-13

申请号：US09997733

申请日：2001-11-29

Applicant: Tantivy Communications, Inc.

Inventor： James A. Proctor JR.

IPC: H04B007/216

CPC classification number: H04W56/00 ,  H04J13/18 ,  H04L1/0007 ,  H04L1/165 ,  H04L1/1809 ,  H04L25/14 ,  H04Q11/0428 ,  H04Q2213/13098 ,  H04Q2213/13202 ,  H04Q2213/13204 ,  H04Q2213/13209 ,  H04Q2213/13216 ,  H04Q2213/1327 ,  H04Q2213/13298 ,  H04Q2213/13332 ,  H04Q2213/1336 ,  H04Q2213/13389 ,  H04W52/04 ,  H04W52/08 ,  H04W52/24 ,  H04W52/32 ,  H04W72/04 ,  H04W74/00 ,  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 additional channel capacity 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 by monitoring power, carrier-to-interference (C/I), or signal-to-noise (SNR) ratios. The power levels over the subchannels is regulated to minimize interference. This in turn allows fast acquisition of additional capacity as needed by allocating additional orthogonal codes within the same code phase and by varying the spreading factor of the codes, as well as by adding additional code phases.

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附加信道容量来满足每个在线用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通过监视功率，载波干扰（C / I）或信噪比（SNR）比来保持同步和时间同步。 调整子通道的功率电平以最大限度地减少干扰。 这又允许通过在相同代码阶段分配附加正交码并通过改变代码的扩展因子以及通过添加附加代码阶段来快速获取附加容量。

公开(公告)号：US20010048709A1

公开(公告)日：2001-12-06

申请号：US09773253

申请日：2001-01-31

Applicant: Tantivy Communications, Inc.

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

IPC: H04B001/69

CPC classification number: 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

Abstract: 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.

Abstract translation: 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。