中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

73 records (took 0.022 seconds)

    52.
    发明专利
    未知

    公开(公告)号：DE60320123D1

    公开(公告)日：2008-05-15

    申请号：DE60320123

    申请日：2003-09-26

    Applicant: INTERDIGITAL TECH CORP

    Inventor： HUNKELER TERESA

    IPC: H04L12/28 ,  H04L12/56 ,  H04W36/14 ,  H04W48/10 ,  H04W84/12 ,  H04W88/08

    Abstract: A method and system wherein handover information is broadcast in a wireless local area network. Handover information is broadcast in a beacon frame thereby allowing WTRUs operating in a wireless area network to handover to available alternative systems as desired. WTRUs may read the beacon frame and obtain appropriate information for handing over to alternative systems having coverage areas that overlap that of the wireless local area network. The alternative systems may be any type of wireless system and the wireless local area network may be any type of wireless area network.

    53.
    发明专利
    未知

    公开(公告)号：AT382168T

    公开(公告)日：2008-01-15

    申请号：AT03742391

    申请日：2003-07-02

    Applicant: INTERDIGITAL TECH CORP

    Inventor： ZUNIGA JUAN ,  HUNKELER TERESA

    IPC: G06F15/177 ,  G06F15/173 ,  H04B1/713 ,  H04B7/26 ,  H04J1/00 ,  H04L12/28 ,  H04W4/06 ,  H04W16/14 ,  H04W36/00 ,  H04W72/04 ,  H04W84/12 ,  H04W88/08

    Abstract: A wireless LAN (WLAN) system for communications among a plurality of users within a basic service system or cell comprising a switching access point (SAP) for transmitting and receiving point-to-multipoint communications to and from the users and a plurality of user terminals, each of which is assigned to a part available in the switching access point and defining a unique combination of a carrier frequency and a spatial beam for isolating communications among the users to prevent collisions; wherein said assignment of frequencies is not permanent and instead use is made of a dynamic or pseudo-random carrier assignment in which received request-to-send signals from the users in a shared carrier is replied to with clear to send signals from the SAP indicating the carrier that can be used for transmission.

    55.
    发明专利
    未知

    公开(公告)号：BR0314505A

    公开(公告)日：2005-07-26

    申请号：BR0314505

    申请日：2003-09-30

    Applicant: INTERDIGITAL TECH CORP

    Inventor： REDDY GAUTAM G ,  CHITRAPU PRABHAKAR R ,  KAZAKEVICH LEONID ,  HUNKELER TERESA ,  CHANDRA ARTY

    IPC: H04B7/26 ,  G01S5/00 ,  H04L12/28 ,  H04L12/56 ,  H04L29/02 ,  H04W4/02 ,  H04W64/00 ,  H04W84/00 ,  H04W88/04 ,  H04W88/06 ,  H04Q7/20

    Abstract: A wireless network provides controlled wireless communications with multi-mode wireless WTRUs. The wireless network has at least one base station having a transceiver operating in an infrastructure communication mode with multi mode WTRUs and a controller that transmits control signals via infrastructure communications with a WTRU that control peer-to-peer mode communications of that WTRU with other WTRUs. A WTRU has transceiver components configured for selective operation in an infrastructure communication mode with a network base station and in a peer-to-peer communication mode with other WTRUs. The WTRU also has a transceiver controller configured to selectively control peer-to-peer mode communications with other WTRUs based on communication signals received in infrastructure communications with a network base station. Preferably, the transceiver controller is configured to control the transceiver components to switch between infrastructure communication mode and peer-to-peer communication mode based on Quality of Service criteria.

Patent Agency Ranking