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US 7,254,392 B2Granted
Intersystem handover with modified parameters
AssigneeNokia Corporation
InventorTimo Kauhanen
Life of this patent
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Abstract
A method for a communication system that includes a first node, a second node and a third node. In the method a connection is established between the first node and the second node based on predefined parameters. Handover of the connection is initiated so that the connection may continue between the first node and the third node. A default value is used for at least one connection parameter required for said connection between the first node and the third node. If it is determined as necessary, the value of said at least one parameter is then modified after the connection has been established.
Claims29
A method:
- establishing a connection between a mobile station, wherein the mobile station is configured to be served by a second node and a third node that respectively belong to a first communication system and a second communication system with different rules of communication, and the second node based on predefined parameters;
- initiating handover procedure of the connection from the first communication system to the second communication system so that the connection may continue between the mobile station and the third node;
- using a default value for at least one connection parameter required to establish the connection between the mobile station and the third node during the handover procedures, the default value being based on a quality of service parameter of the connection between the mobile station and the second node;
- and modifying, when determined necessary, the value of said at least one parameter.
1 more element
A cellular communication system, comprising:
- a mobile station;
- a second node;
- a third node, wherein the second and third nodes are configured to operate based on different rules of communication, wherein the mobile station is configured to communicate with the second node and the third node, wherein a connection between the mobile station and the second node is configured to be handed over to a connection between the mobile station and the third node, and wherein the set-up of a connection between the mobile station and the third node is configured to be based on at least one parameter that is different from the parameters required for the set-up of the connection between the mobile station and the second node;
- a controller configured to determine a default value for said at least one different parameter based on a quality of service parameter of the connection between the mobile station and the second node, wherein the at least one different parameter is configured to be used for setting up the connection between the mobile station and third node during the handover procedures;
- and
- a modification unit configured to modify the value of said at least one parameter.
3 more elements
The communication system as claimed in 13, wherein the controller is configured to determine the default parameter by mapping at least one of bearer characteristics of the connection between the mobile station and the second node in characteristic of the connection between the mobile station and the third node.
A cellular communication system controller, configured to:
- determine a default value for a connection parameter required to establish a connection between a mobile station and a third node during a handover procedure of the connection from a connection between the mobile station and a second node,
- wherein the second and third nodes are configured to operate based on different rules of communication, and
- wherein the default value is based on a quality of service parameter of the connection between the mobile station and the second node.
A method, comprising:
- handing over a mobile node from a first communication system of a first type to a second communication system of a second type;
- providing a connection between the mobile node and the first communication system, wherein the first communication system requires a first group of parameters for connection;
- initiating handover from the first communication system to the second communication, wherein the second communication system requires a second group of parameters for connection, and wherein the second group of parameters comprises at least one parameter that is not included in the first group of parameters;
- using, for the at least one parameter that is not included in the first group of parameters, a default value based on the handing over being from the first type of communication system, and
- modifying the default value, when necessary.
2 more elements
A cellular communication system, comprising:
- mobile station means for communicating;
- second node means for operating based on a second rule of communication;
- third node means for operating based on a third rule of communication, wherein the second and third node means are configured to operate based on different rules of communication, wherein the mobile station means is configured to communicate with the second node means and the third node means, wherein a connection between the mobile station means and the second node means is configured to be handed over to a connection between the mobile station means and the third node means, and wherein the set-up of a connection between the mobile station means and the third node means is configured to be based on at least one parameter that is different from the parameters required for the set-up of the connection between the mobile station means and the second node means;
- controller means for determining a default value for said at least one different parameter based on a quality of service parameter of the connection between the mobile station means and the second node means to be used for setting up the connection between the mobile station means and third node means during the handover procedures;
- and
- modification means for modifying the value of said at least one parameter.
3 more elements
Dependencies are inferred from the claim text.