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Network giving local access to mobile phones

  • US 6,335,921 B1
  • Filed: 03/17/1997
  • Issued: 01/01/2002
  • Est. Priority Date: 03/27/1996
  • Status: Expired due to Fees
First Claim
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1. A local mobile access network comprising:

  • a virtual channel switch (VCX);

    said virtual channel switch (VCX) being connected to at least one external network (RE, UI);

    a routing equipment (PONT), a plurality of nodes (NIE);

    said switch (VCX) being connected via said routing equipment (PONT), to one node (NIE) among said plurality of nodes (NIE) which are interconnected to form a distribution network (RDL);

    at least one concentrator (CTR);

    a plurality of radio terminals (BR);

    a plurality of mobile units;

    each of said nodes (NIE) being connected to said at least one concentrator (CTR) having at least one of said radio terminals (BR) connected thereto for communicating with said mobile units, wherein all virtual connections established between said mobile units and said switch (VCX) are identified by a common and unique virtual path identifier (VPI) corresponding to a virtual path connecting all of said radio terminals (BR) with the switch (VCX) according to a point-to-point fusion topology in an uplink direction and a point-to-multipoint diffusion topology in a downlink direction;

    a connection between a mobile unit and said switch (VCX) being identified for an entire period of communication by a virtual channel identifier (VCI) attributed during a call establishing phase and marked in said concentrator (CTR) during said phase;

    virtual connections between two of said mobile units attached to said radio terminals of said network being identified by a first common virtual path identifier;

    all of the connections between said mobile unit attached to one of said radio terminals of said mobile network and said external network being identified by a second common virtual path identifier;

    a third virtual path identifier for signalization exchange of cells between said mobile units attached to said network and the switch;

    each signalization cell being identified by a virtual channel identifier (VCI) for each mobile unit and attributed thereto during a localization phase of said mobile by said network; and

    further wherein during a hand-over phase while a mobile unit is attached to two of said terminals (BR), said two terminals exchanging information which is carried by cells having the virtual channel identifier (VCI) of a signaling channel allocated to said mobile unit and the common virtual path identifier (VPI) defined in distribution network (RDL), according to point-to-point fusion topology in the uplink direction a point-to-multipoint with diffusion topology in the down link direction.

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