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Handling of circuit-switched data services in IP-based GSM networks

  • US 20010030954A1
  • Filed: 01/31/2001
  • Published: 10/18/2001
  • Est. Priority Date: 02/03/2000
  • Status: Active Grant
First Claim
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1. A communication network part or element comprising:

  • an interface for coupling a cellular telephone network to a further network, the interface having a circuit for causing signalling-information exchange between the cellular telephone network and the further network and for causing user or payload information exchange between the cellular telephone network and the further network;

    a first layer for transferring signalling information assigned to a telephone call being processed in the cellular telephone network; and

    a second layer for transferring payload information assigned to the telephone call being coupled to the interface, wherein the second layer comprises;

    an information frame generating and suppressing station for generating an information frame with a receive sequence number and comprising user information of the telephone call and being transferred to and from the interface on a direct route assigned to the telephone call within the second layer, and for suppressing transfer of an information frame within the second layer if the information frame does not include any user information, and a radio network comprising a rate adaptation function for a rate adaptation of the payload information transfer assigned to the telephone call.

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