Techniques for optimizing efficiency in a situation for a possible handover of a mobile terminal
First Claim
1. A method implemented by a mobile terminal for efficient preparation of a possible handover from a first mobile access network implementing a first mobile access technology to a second mobile access network implementing a second mobile access technology different from the first mobile access technology, wherein either the first mobile access technology is a 3GPP technology and the second mobile access technology is a non-3GPP technology or the first mobile access technology is a non-3GPP technology and the second mobile access technology is a 3GPP technology, the method comprising:
- receiving a list of cell values of the first mobile access network from the first mobile access network either periodically or in response to a change of availability of at least one of the first and second mobile access network;
determining that one or more values in the list indicate information about cells of the first mobile access network and that one or more other cell values in the list indicate an availability of the second mobile access network for handover, wherein the one or more other cell values have been reserved for indicating said availability;
responsive to determining that said one or more other cell values indicate the availability of the second mobile access network, making a decision regarding a connection to an inter-technology interworking entity that is adapted to interwork between the first mobile access technology and the second mobile access technology; and
based on said decision, establishing a connection to said inter-technology interworking entity in preparation for said possible handover, or disconnecting an already established connection to said inter-technology interworking entity in order to terminate preparation for said possible handover.
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Abstract
A technique is proposed for optimizing efficiency in a situation for a possible handover of a mobile terminal (106) from a first mobile access network (102) according to a first mobile access technology to a second mobile access network (104) according to a second mobile access technology different from the first mobile access technology. A method embodiment of the technique performed by the mobile terminal (106) comprises the steps of receiving information regarding an availability of at least one of the first mobile access network and the second mobile access network (104), taking a decision regarding a connection to an inter-technology interworking entity (100) adapted to interwork between the first access technology and the second access technology, and establishing a connection to the interworking entity (100) for a preparation of the handover.
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Citations
26 Claims
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1. A method implemented by a mobile terminal for efficient preparation of a possible handover from a first mobile access network implementing a first mobile access technology to a second mobile access network implementing a second mobile access technology different from the first mobile access technology, wherein either the first mobile access technology is a 3GPP technology and the second mobile access technology is a non-3GPP technology or the first mobile access technology is a non-3GPP technology and the second mobile access technology is a 3GPP technology, the method comprising:
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receiving a list of cell values of the first mobile access network from the first mobile access network either periodically or in response to a change of availability of at least one of the first and second mobile access network; determining that one or more values in the list indicate information about cells of the first mobile access network and that one or more other cell values in the list indicate an availability of the second mobile access network for handover, wherein the one or more other cell values have been reserved for indicating said availability; responsive to determining that said one or more other cell values indicate the availability of the second mobile access network, making a decision regarding a connection to an inter-technology interworking entity that is adapted to interwork between the first mobile access technology and the second mobile access technology; and based on said decision, establishing a connection to said inter-technology interworking entity in preparation for said possible handover, or disconnecting an already established connection to said inter-technology interworking entity in order to terminate preparation for said possible handover. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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- 17. A method implemented by an entity in a first mobile access network, implementing a first mobile access technology, for efficient preparation of a possible handover of a mobile terminal from the first mobile access network to a second mobile access network implementing a second mobile access technology different from the first mobile access technology, wherein either the first mobile access technology is a 3GPP technology and the second mobile access technology is a non-3GPP technology or the first mobile access technology is a non-3GPP technology and the second mobile access technology is a 3GPP technology, the method comprising sending to the mobile terminal a list of cell values of the first mobile access network either periodically or in response to a change of availability of at least one of the first and second mobile access network, wherein one or more values in the list indicate information about cells of the first mobile access network and one or more other cell values in the list indicate an availability of the second mobile access network for said possible handover, wherein the one or more other cell values have been reserved for indicating said availability.
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22. A mobile terminal configured for efficient preparation of a possible handover from a first mobile access network implementing a first mobile access technology to a second mobile access network implementing a second mobile access technology different from the first mobile access technology, wherein the mobile terminal comprises:
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a receiving circuit configured to receive a list of cell values of the first mobile access network from the first mobile access network either periodically or in response to a change of availability of at least one of the first and second mobile access network; a processing circuit configured to; determine that one or more values in the list indicate information about cells of the first mobile access network and that one or more other cell values in the list indicate an availability of the second mobile access network for handover, wherein the one or more other cell values have been reserved for indicating said availability; and responsive to determining said one or more other cell values indicate the availability of the second mobile access network, make a decision regarding a connection to an inter-technology interworking entity that is adapted to interwork between the first mobile access technology and the second mobile access technology; and a transmission circuit configured to, based on said decision, establish a connection to said inter-technology interworking entity in preparation for said possible handover, or disconnect an already established connection to said inter-technology interworking entity in order to terminate preparation for said possible handover. - View Dependent Claims (23)
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- 24. An entity in a first mobile access network implementing a first mobile access technology, the entity configured for efficient preparation of a possible handover of a mobile terminal from the first mobile access network to a second mobile access network implementing a second mobile access technology different from the first mobile access technology, wherein either the first mobile access technology is a 3GPP technology and the second mobile access technology is a non-3GPP technology or the first mobile access technology is a non-3GPP technology and the second mobile access technology is a 3GPP technology, the entity comprising a transmission circuit configured to send to the mobile terminal a list of cell values of the first mobile access network either periodically or in response to a change of availability of at least one of the first and second mobile access network, wherein one or more values in the list indicate information about cells of the first mobile access network and one or more other cell values in the list indicate an availability of the second mobile access network for said possible handover, wherein the one or more other cell values have been reserved for indicating said availability.
Specification