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    Method for transmitting wideband signals via a communication system adapted for narrow-band signal transmission
    65.
    发明授权
    Method for transmitting wideband signals via a communication system adapted for narrow-band signal transmission 有权
    一种适用于窄带信号传输的通信系统发送宽带信号的方法

    公开(公告)号：US07483490B2

    公开(公告)日：2009-01-27

    申请号：US10346883

    申请日：2003-01-17

    Applicant: Lin-Nan Lee ,  Khalid Karimullah ,  Feng-Wen Sun ,  Kamran Etemad

    Inventor： Lin-Nan Lee ,  Khalid Karimullah ,  Feng-Wen Sun ,  Kamran Etemad

    IPC: H04L27/28 ,  H04K1/10 ,  H04J13/02

    CPC classification number: H04J13/0048 ,  H04J11/0023 ,  H04L1/0002 ,  H04W52/26

    Abstract: A communication system is used to transmit and receive data on a plurality of relatively narrow-band signals and wideband signals. The two signal types share a common electromagnetic spectrum by employing spreading gain and maintaining orthogonality between simultaneously transmitted wideband and narrow-band signals. Signal orthogonality is maintained by selectively choosing orthogonal codes and aligning or spacing a wideband carrier frequency with respect to the narrow-band carrier frequencies in accordance with the ratio of the wideband to the narrow-band chip frequencies. A pilot signal is preferably transmitted contemporaneously with the transmission of the first spread signal, and a control date signal, associated with a plurality of users on the first bandwidth, is transmitted on a common control channel using a single Walsh code that is shared by a plurality of users in a TDMA protocol.

    Abstract translation: 通信系统用于在多个相对窄带信号和宽带信号上发送和接收数据。 两种信号类型通过采用扩展增益并保持同时发送的宽带和窄带信号之间的正交性，共享一个共同的电磁频谱。 通过根据宽带与窄带码片频率的比率选择性地选择正交码并且相对于窄带载波频率对准或间隔宽带载波频率来维持信号正交性。 导频信号优选地与第一扩展信号的传输同时发射，并且在公共控制信道上使用与由多个用户共享的单个沃尔什码在一个公共控制信道上发送与第一带宽上的多个用户相关联的控制日期信号 TDMA协议中的多个用户。

    Locating content in broadband wireless access networks
    66.
    发明申请
    Locating content in broadband wireless access networks 审中-公开
    定位宽带无线接入网络中的内容

    公开(公告)号：US20080259835A1

    公开(公告)日：2008-10-23

    申请号：US11788606

    申请日：2007-04-20

    Applicant: Muthaiah Venkatachalam ,  Kamran Etemad

    Inventor： Muthaiah Venkatachalam ,  Kamran Etemad

    IPC: H04L12/18

    CPC classification number: H04L12/189 ,  H04W72/005 ,  Y02D70/00 ,  Y02D70/146

    Abstract: In some embodiments, only one multicast connection identifier is used in a WiMAX network per zone. This may result in power savings because it is not necessary for the mobile station to query a base station to obtain the correct information about how to locate desired channels in a WiMAX multicast. Instead, the mobile station may be maintained in a lower power consumption mode in which it need not transmit, but only receives information. This is because the mobile station has all the information it needs about what channels are available and can simply tune using a logical media channel identifier to the appropriate channel to receive the desired content without having to transmit a message to the base station to identify the correct channel.

    Abstract translation: 在一些实施例中，在每个区域的WiMAX网络中仅使用一个多播连接标识符。 这可能导致功率节省，因为移动台不需要查询基站以获得关于如何在WiMAX多播中定位所需信道的正确信息。 相反，移动台可以维持在不需要发送的较低功耗模式中，但是仅接收信息。 这是因为移动台具有所需的关于哪些信道可用的所有信息，并且可以简单地使用逻辑媒体信道标识符调谐到适当信道以接收所需内容，而不必向基站发送消息以识别正确的 渠道。

    SYSTEM AND METHOD FOR USING INHIBIT SENSE MULTIPLE ACCESS (ISMA) PROTOCOL AND A CAPTURE MESSAGE TO OPTIMIZE RANDOM ACCESS CONTROL AND DATA PACKET COMMUNICATION BETWEEN ACCESS TERMINALS AND A BASE STATION OVER A WIRELESS REVERSE COMMON CHANNEL
    67.
    发明授权
    SYSTEM AND METHOD FOR USING INHIBIT SENSE MULTIPLE ACCESS (ISMA) PROTOCOL AND A CAPTURE MESSAGE TO OPTIMIZE RANDOM ACCESS CONTROL AND DATA PACKET COMMUNICATION BETWEEN ACCESS TERMINALS AND A BASE STATION OVER A WIRELESS REVERSE COMMON CHANNEL 有权
    使用禁止多重访问（ISMA）协议和捕获信息的系统和方法优化随机接入控制和接入终端之间的数据包通信以及无线反向通用通道之间的基站

    公开(公告)号：US06738366B1

    公开(公告)日：2004-05-18

    申请号：US09478452

    申请日：2000-01-06

    Applicant: Kamran Etemad ,  Khalid Karimullah

    Inventor： Kamran Etemad ,  Khalid Karimullah

    IPC: H04B7212

    CPC classification number: H04W52/50 ,  H04W16/14 ,  H04W72/00 ,  H04W74/08 ,  H04W76/10

    Abstract: A system and method for optimizing random access control, and for optimizing transmission efficiency of data packets over reverse common channels between access terminals and a base station, in a wireless communications system. In the communications system, at least one of the access terminals is adapted to transmit at least a portion of an access data packet to the base station, and the base station is adapted to receive the portion of the access data packet and, in response, to transmit a message for receipt by the plurality of access terminals which indicates receipt of the access data packet portion by the base station and identifies the access terminal from which said access data packet portion is received. The message can control the other access terminals to refrain from transmitting an access data packet, while indicating receipt of the access data packet portion to the certain access terminal from which the access data packet portion had been transmitted. The base station can also provide power control signals to control transmission power of that certain access terminal, and to control that certain access terminal to transmit over certain reverse channels. Accordingly, interference between access data packets being transmitted by multiple access terminals and being received in the same time slot by a base station in a wireless communications system can also be minimized.

    Abstract translation: 一种用于在无线通信系统中优化随机接入控制以及用于优化接入终端和基站之间的反向公共信道上的数据分组的传输效率的系统和方法。 在通信系统中，至少一个接入终端适于向基站发送接入数据分组的至少一部分，并且基站适于接收接入数据分组的一部分，作为响应， 发送用于由指示接收基站的接入数据分组部分的多个接入终端接收的消息，并识别接收到所述接入数据分组部分的接入终端。 该消息可以控制其他接入终端，以避免发送接入数据分组，同时指示接收到接入数据分组部分到已从其发送接入数据分组部分的特定接入终端。 基站还可以提供功率控制信号来控制该特定接入终端的发射功率，并且控制该特定接入终端通过某些反向信道进行发射。 因此，也可以将由多个接入终端发送的接入数据分组之间的干扰由基站在无线通信系统中在相同的时隙中接收。

    Method for transmitting wideband signals via a communication system adapted for narrow-band signal transmission
    68.
    发明授权
    Method for transmitting wideband signals via a communication system adapted for narrow-band signal transmission 失效

    公开(公告)号：US06539050B1

    公开(公告)日：2003-03-25

    申请号：US09104467

    申请日：1998-06-25

    Applicant: Lin-Nan Lee ,  Khalid Karimullah ,  Feng-Wen Sun ,  Kamran Etemad

    Inventor： Lin-Nan Lee ,  Khalid Karimullah ,  Feng-Wen Sun ,  Kamran Etemad

    IPC: H04B169

    CPC classification number: H04J13/0048 ,  H04J11/0023 ,  H04L1/0002 ,  H04W52/26

    Abstract: A communication system is used to transmit and receive a plurality of relatively narrow-band signals and wideband signals. The two signal types share a common electromagnetic spectrum by employing spreading gain and maintaining orthogonality between simultaneously transmitted wideband and narrow-band signals. Signal orthogonality is maintained by selectively choosing orthogonal codes and aligning or spacing a wideband carrier frequency with respect to the narrow-band carrier frequencies in accordance with the ratio of the wideband to the narrow-band chip frequencies. A pilot signal is preferably transmitted contemporaneously with the transmission of the first spreaded signal, and a control data signal, associated with a plurality of users on the first bandwidth, is transmitted on a common control channel using a single Walsh code that is shared by a plurality of users in a TDMA protocol. Further, if the length of the message intended for transmission by the wideband transceivers is below a message length threshold, the message can be transmitted using a common access channel shared by the wideband transceivers. Still further, by adapting the data transmission rate, in response to the data error rate and transmitter power level, the transmission range and/or the data transmission rate can be optimized.

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