Handling of circuit-switched data services in IP-based GSM networks
First Claim
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.
1 Assignment
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Accused Products
Abstract
A communication network element or part, and a method for operating a communication network part are disclosed. The communication network part comprises a first layer for transferring signalling information assigned to a telephone call being processed in the network and a second layer for transferring payload information assigned to the telephone call. An interface couples the network to a further network and comprises a signalling information exchange function and user or payload information exchange function between the network and the further network. The second layer generates an information frame which includes user information of the telephone call being transferred to and from the interface on a direct route assigned to the telephone call within the second layer and selectively suppresses the transfer of an information frame within the second layer if the information frame does not comprise any user information.
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Citations
23 Claims
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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. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
- 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;
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19. A method for operating a communication network element in a cellular telephone network which handles telephone calls and signalling information using:
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a radio network;
an interface for coupling the cellular telephone network to a further network, the interface performing signalling information exchange function between the cellular telephone network and the further network, and performing user or payload information exchange function between the cellular telephone network and the further network and including 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 method comprises the steps of;
selectively generating and suppressing within the second layer an information frame 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;
suppressing transfer of an information frame within the second layer if the information frame does not include any user information, andadapting a transfer rate of said payload information assigned to the telephone call within the radio network. - View Dependent Claims (20, 21, 22, 23)
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Specification