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    41.
    发明专利
    未知

    公开(公告)号：AT475238T

    公开(公告)日：2010-08-15

    申请号：AT07854935

    申请日：2007-12-05

    Applicant: MOTOROLA INC

    Inventor： MAKHLOUF ISAM R ,  EMEOTT STEPHEN P

    IPC: H04L12/28 ,  H04L1/18

    Abstract: The invention can establish a default retransmission algorithm and an interference retransmission algorithm. The default retransmission algorithm can be a Distributed Coordination Function (DCF) based algorithm implemented in a MAC layer in conformance with an IEEE 802.11 based standard. The minimum cumulative back-off time for the default transmission algorithm can be less a minimum cumulative back-off time for the interference retransmission algorithm. The minimum cumulative back-off time for the interference retransmission algorithm can be greater than an on-cycle of the PII and less than a sum of the one and off-cycles of the PII (e.g., between ~8.3 ms and ~16.7 ms for microwave oven generated PII). A determination can be made whether periodic intermittent interference is present. If so, the default retransmission algorithm can be automatically utilized for wireless data conveyances. When PII is present, the interference retransmission algorithm can be automatically utilized.

    TRANSPORTE DE TRAFICO DE ADMINISTRACION A TRAVES DE UNA RED EN MALLA DE SALTO MULTIPLE.
    44.
    发明专利
    TRANSPORTE DE TRAFICO DE ADMINISTRACION A TRAVES DE UNA RED EN MALLA DE SALTO MULTIPLE. 未知

    公开(公告)号：MX2009002505A

    公开(公告)日：2009-03-25

    申请号：MX2009002505

    申请日：2007-08-08

    Applicant: MOTOROLA INC

    Inventor： EMEOTT STEPHEN P ,  BARKER CHARLES R JR ,  BRASKICH ANTHONY J

    IPC: H04L12/56

    Abstract: Un método para comunicación entre un nodo de transmisor y un nodo de receptor en una red de comunicación de salto múltiple (100), que comprende: formatear información en una estructura de datos para generar un cuadro de acción de malla (400), en donde el cuadro de acción de malla (400) comprende un encabezado (420) que comprende una dirección fuente (SA) que identifica dicho nodo, una dirección destino (DA) que identifica un nodo de destinatario, una dirección de transmisor (TA) que identifica un nodo de remitente, y una dirección de receptor (RA) que identifica un nodo de receptor; y un campo de cuerpo (430) que comprende una unidad de datos de acción de malla (434); y enviar el cuadro de acción de malla desde el nodo de transmisor.

    METHOD AND APPARATUS FOR ESTABLISHING SECURITY ASSOCIATIONS BETWEEN NODES OF AN AD HOC WIRELESS NETWORK
    45.
    发明专利
    METHOD AND APPARATUS FOR ESTABLISHING SECURITY ASSOCIATIONS BETWEEN NODES OF AN AD HOC WIRELESS NETWORK 未知

    公开(公告)号：CA2662846A1

    公开(公告)日：2008-03-13

    申请号：CA2662846

    申请日：2007-08-23

    Applicant: MOTOROLA INC

    Inventor： EMEOTT STEPHEN P ,  BRASKICH ANTHONY J

    IPC: H04L9/00

    Abstract: A method and apparatus for establishing security associations between nod es of an ad hoc wireless network includes two authentication steps: an initi al first contact step (authentication, authorization, and accounting (AAA)-b ased authentication), and a "light-weight" step that reuses key material gen erated during first contact. A mesh authenticator within the network provide s two roles. The first role is to implement an 802.1X port access entity (PA E), derive transient keys used for encryption with a supplicant mesh point v ia a four-way handshake and take care of back end communications with a key distributor. The second role is as a key distributor that implements a AAA-c lient and derives keys used to authenticate a mesh point during first contac t or fast security association. The key distributor and the on-line authenti cation server can communicate to one another without these messages being tr ansported over mesh links.

    47.
    发明专利
    未知

    公开(公告)号：BRPI0417633A

    公开(公告)日：2007-03-27

    申请号：BRPI0417633

    申请日：2004-12-14

    Applicant: MOTOROLA INC

    Inventor： EMEOTT STEPHEN P ,  CHEN YE ,  SIMPSON FLOYD D ,  WANG HUAI Y ,  WILSON TIMOTHY J ,  SMAVATKUL NATTAVUT

    IPC: G08C17/00 ,  H04B7/15 ,  H04L12/28 ,  H04L12/56

    Abstract: A mobile station ( 106 ) establishes a real time communication link via an access point ( 102 ) for carrying voice or other time-sensitive data. A WLAN subsystem ( 204 ) of the mobile station is normally kept in a low power state. Upon initiating a communication link the mobile station signals to the access point that unscheduled power save delivery mode will be used ( 614 ), and the access point reserves resources to assure the necessary quality of service. The mobile station initiates a frame transaction by first powering up the WLAN subsystem ( 712 ), acquiring the WLAN channel ( 407 ), and transmitting a polling frame. Upon successful receipt of the polling frame the access point prepares to reply with an aggregate response. The aggregate response commences by transmitting all data in an aggregate buffer, including both reserved and unreserved data buffers. Upon successful receipt of the aggregate response, the mobile station places the WLAN subsystem back into a low power state.

    UNSCHEDULED POWER SAVE DELIVERY METHOD IN A WIRELESS LOCAL AREA NETWORK FOR REAL TIME COMMUNICATION
    48.
    发明专利
    UNSCHEDULED POWER SAVE DELIVERY METHOD IN A WIRELESS LOCAL AREA NETWORK FOR REAL TIME COMMUNICATION 未知

    公开(公告)号：CA2550394A1

    公开(公告)日：2005-07-21

    申请号：CA2550394

    申请日：2004-12-14

    Applicant: MOTOROLA INC

    Inventor： SMAVATKUL NATTAVUT ,  WANG HUAI Y ,  WILSON TIMOTHY J ,  CHEN YE ,  SIMPSON FLOYD D ,  EMEOTT STEPHEN P

    IPC: G08C17/00 ,  H04B7/15 ,  H04L12/28 ,  H04L12/56

    Abstract: A mobile station (106) establishes a real time communication link via an access point (102) for carrying voice or other time-sensitive data. A WLAN subsystem (204) of the mobile station is normally kept in a low power state. Upon initiating a communication link the mobile station signals to the acces s point that unscheduled power save delivery mode will be used (614), and the access point reserves resources to assure the necessary quality of service. The mobile station initiates a frame transaction by first powering up the WL AN subsystem (712), acquiring the WLAN channel (407), and transmitting a pollin g frame. Upon successful receipt of the polling frame the access point prepare s to reply with an aggregate response. The aggregate response commences by transmitting all data in an aggregate buffer, including both reserved and unreserved data buffers. Upon successful receipt of the aggregate response, the mobile station places the WLAN subsystem back into a low power state.

    METHOD AND APPARATUS FOR FACILITATING DATA TRANSMISSIONS
    50.
    发明公开
    METHOD AND APPARATUS FOR FACILITATING DATA TRANSMISSIONS 有权
    方法和VORRICHUTNG为使数据传输

    公开(公告)号：EP1658740A4

    公开(公告)日：2009-10-28

    申请号：EP04780547

    申请日：2004-08-09

    Applicant: MOTOROLA INC

    Inventor： EMEOTT STEPHEN P ,  CHEN YE ,  SMAVATKUL NATTAVUT

    IPC: H04L12/28 ,  H04L12/56 ,  H04W52/02 ,  H04W84/12

    CPC classification number: H04W52/0229 ,  H04W74/08 ,  H04W84/12 ,  Y02D70/00 ,  Y02D70/142 ,  Y02D70/22 ,  Y02D70/23

    Abstract: An access point ( 11 ) for a wireless local area network ( 10 ) transmits a beacon message during a service interval period ( 21 ). This beacon message identifies, in a preferred embodiment, those subscriber units to whom the access point will shortly be transmitting data. Subscriber units that are not identified in the beacon message and that do not have data themselves to transmit to the access point can implement a power conservation mode of operation until the next beacon message. Subscriber units that have data, such as voice information, to transmit can utilize the beacon message contents to at least estimate a likely time by when the access point will have concluded making its transmissions to the subscriber units. That estimated time can then be used to facilitate scheduling a time at which a given subscriber unit will contend for an opportunity to transmit its data to the access point. In a preferred embodiment, this scheduled transmission time can potentially occur either during a contention window that follows the service interval period or during a dynamic contention window that follows the transmissions of the access point and concludes with the conclusion of the service interval period. Subscriber units can then use intervening periods of time to effect their power conservation schemes of choice.

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