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    PEER-TO-PEER WIRELESS COMMUNICATION SYSTEM
    72.
    发明专利
    PEER-TO-PEER WIRELESS COMMUNICATION SYSTEM 未知

    公开(公告)号：SG158914A1

    公开(公告)日：2010-02-26

    申请号：SG2010005007

    申请日：2006-01-19

    Applicant: INTERDIGITAL TECH CORP

    Inventor： CHANDRA ARTY ,  LEVY JOSEPH S ,  GRANDHI SUDHEER A ,  ZEIRA ELDAD

    IPC: H04W28/16 ,  H04W84/18

    Abstract: A peer-to-peer communication system using a direct link setup (DLS) is disclosed. A mobile station (STA) establishes a direct communication link with another STA by sending a message requesting a DLS to an access point (AP), (i.e., a centralized controller). The AP may accept or reject the DLS request based on channel measurements. If the DLS request is accepted, the DLS is established such that the STAs may directly communicate with each other. An established DLS connection may be torn down by the AP sending a message including a DLS teardown request to one of the STAs, or based on channel measurements. The system may be an Ad hoc network comprising a plurality of STAs without an AP where each STA maintains a database of one-hop and two-hop STAs, and establishes a direct link to other STAs after informing neighboring STAs of an intention to establish a direct communication link.

    Method and apparatus for protecting high throughput stations
    73.
    发明专利
    Method and apparatus for protecting high throughput stations 未知

    公开(公告)号：AU2006291198B2

    公开(公告)日：2010-01-21

    申请号：AU2006291198

    申请日：2006-09-11

    Applicant: INTERDIGITAL TECH CORP

    Inventor： CHANDRA ARTY ,  TERRY STEPHEN E ,  LEVY JOSEPH S ,  GRANDHI SUDHEER A ,  ZEIRA ELDAD M

    IPC: H04W74/08 ,  H04L45/28 ,  H04W48/08 ,  H04W80/02

    Abstract: A method and apparatus for protecting high throughput (HT) stations (STAs) are disclosed. In one embodiment, a physical layer (PHY) legacy preamble transmitted by one STA is decoded by another STA that does not use a legacy preamble. In another embodiment, one STA is identified by another STA by using bits in the preamble of a packet to indicate which PHY type will be used in the remaining portion of the packet. In yet another embodiment, one STA sends ready-to-send (RTS)/clear-to-send (CTS) or CTS-to-self messages for reserving a medium in the presence of another STA of a different type than the one STA. In yet another embodiment, an access point (AP) transmits a beacon or an association message including a capability information element (IE) that indicates operation or support for a legacy preamble, HT STA preambles and a medium access control (MAC) packet transmission with HT protection mechanisms.

    METODO Y APARATO PARA DISTRIBUIR INFORMACION DE BALIZA.
    78.
    发明专利
    METODO Y APARATO PARA DISTRIBUIR INFORMACION DE BALIZA. 未知

    公开(公告)号：MX2008009166A

    公开(公告)日：2008-09-25

    申请号：MX2008009166

    申请日：2007-01-08

    Applicant: INTERDIGITAL TECH CORP

    Inventor： GRANDHI SUDHEER A ,  CHANDRA ARTY C ,  ZEIRA ELDAD M ,  LEVY JOSEPH S

    IPC: H04L12/28 ,  H04W48/12

    Abstract: Se describe un método y aparato para distribuir información de baliza que incluye una primera WTRU que modifica un encabezador de protocolo de convergencia de capas físicas (PLCP) en un marco de unidad de datos de protocolo físico (PHY PDU) para incluir información de baliza. La primera WTRU transmite el encabezador PLCP modificado a una segunda WTRU. La segunda WTRU recibe el encabezador PLCP modificado y extrae información de baliza del encabezador PLCP modificado. La segunda WTRU se asocia con la primera WTRU.

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