Method and apparatus for the handover
First Claim
Patent Images
1. A method of selecting a handover target network in a terminal, the method comprising:
- transmitting a first query regarding a handover mode to an information server, and receiving a response to the first query from the information server, wherein the response to the first query from the information server comprises handover mode control information that indicates whether the terminal is a handover initiator;
transmitting a handover mode notification message to a network point of service (PoS) that is currently connected to the terminal, when the handover mode control information indicates that the terminal is the handover initiator;
requesting the information server for information regarding a candidate network that is subject to handover, and receiving the information regarding the candidate network that is subject to handover in response to the request;
determining a signal strength of a current network link between the terminal and the network PoS that is currently connected to the terminal;
determining a signal strength of the candidate network;
determining that handover is required based on a first comparison of the signal strength of the current network link to a first threshold, and based on a second comparison of the signal strength of the candidate network to a second threshold;
in response to the determining that handover is required, transmitting a second query to the candidate network regarding whether a resource of the candidate network is available to support the terminal'"'"'s handover, and receiving a response to the second query from the candidate network;
in response to the receiving the response to the second query from the candidate network, determining that the candidate network is a target network; and
in response to the determining that the candidate network is the target network, requesting the target network to perform handover and receiving a response to the request to perform handover from the target network.
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Abstract
Consistent handover can be provided between a plurality of objects by providing handover mode control information defining an object for initiating handover from among at least one object in a system environment including the at least one object, wherein the at least one object is able to initiate handover between heterogeneous networks.
8 Citations
15 Claims
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1. A method of selecting a handover target network in a terminal, the method comprising:
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transmitting a first query regarding a handover mode to an information server, and receiving a response to the first query from the information server, wherein the response to the first query from the information server comprises handover mode control information that indicates whether the terminal is a handover initiator; transmitting a handover mode notification message to a network point of service (PoS) that is currently connected to the terminal, when the handover mode control information indicates that the terminal is the handover initiator; requesting the information server for information regarding a candidate network that is subject to handover, and receiving the information regarding the candidate network that is subject to handover in response to the request; determining a signal strength of a current network link between the terminal and the network PoS that is currently connected to the terminal; determining a signal strength of the candidate network; determining that handover is required based on a first comparison of the signal strength of the current network link to a first threshold, and based on a second comparison of the signal strength of the candidate network to a second threshold; in response to the determining that handover is required, transmitting a second query to the candidate network regarding whether a resource of the candidate network is available to support the terminal'"'"'s handover, and receiving a response to the second query from the candidate network; in response to the receiving the response to the second query from the candidate network, determining that the candidate network is a target network; and in response to the determining that the candidate network is the target network, requesting the target network to perform handover and receiving a response to the request to perform handover from the target network. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A method of selecting a handover target network, the method comprising:
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transmitting a first query regarding a handover mode to an information server, and receiving a response to the first query from the information server, wherein the transmitting the first query regarding the handover mode and the receiving the response to the first query from the information server are performed by a network point of service (PoS) that is currently connected to a terminal, and wherein the response to the first query from the information server comprises handover mode control information that indicates whether the network PoS currently connected to the terminal is a handover initiator; transmitting a handover mode notification message to the terminal from the network PoS that is currently connected to the terminal, when the handover mode control information indicates that the network PoS that is currently connected to the terminal is the handover initiator; requesting the information server for information regarding a candidate network that is subject to handover, and receiving the information regarding the candidate network that is subject to handover in response to the request, wherein the requesting and the receiving the information regarding the candidate network that is subject to handover are performed by the network PoS that is currently connected to the terminal; determining a signal strength of a current network link between the terminal and the network PoS that is currently connected to the terminal; determining a signal strength of the candidate network; determining that handover is required based on a first comparison of the signal strength of the current network link to a first threshold, and based on a second comparison of the signal strength of the candidate network to a second threshold; transmitting a second query to the terminal regarding whether the terminal intends to perform handover initiated by the network PoS, which is currently connected to the terminal, and receiving a response to the second query from the terminal; transmitting a third query regarding whether a resource of the candidate network is available to the candidate network that is selected according to the response to the second query regarding whether the terminal intends to perform handover and the information regarding the candidate network that is subject to handover, and receiving a response to the third query regarding whether the resource of the candidate network is available, wherein the transmitting the third query to the candidate network and the receiving the response to the third query regarding whether the resource of the candidate network is available are performed by the network PoS that is currently connected to the terminal; in response to the receiving the response to the third query regarding whether the resource of the candidate network is available, determining that the candidate network is a target network; and in response to the determining that the candidate network is the target network, requesting the target network to perform handover, and receiving a response to the request to perform handover from the target network. - View Dependent Claims (11, 12, 13, 14)
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15. A computer program product comprising a non-transitory computer-readable medium, wherein the non-transitory computer-readable medium comprises computer-readable code that, when executed by a computer, causes the computer to:
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transmit a first query regarding a handover mode to an information server, and receive a response to the first query from the information server, wherein the response to the first query from the information server comprises handover mode control information that indicates whether a terminal is a handover initiator; transmit a handover mode notification message to a network point of service (PoS) that is currently connected to the terminal, when the handover mode control information indicates that the terminal is the handover initiator; request the information server for information regarding a candidate network that is subject to handover, and receive the information regarding the candidate network that is subject to handover in response to the request; determine a signal strength of a current network link between the terminal and the network PoS that is currently connected to the terminal; determine a signal strength of the candidate network; determine that handover is required based on a first comparison of the signal strength of the current network link to a first threshold, and based on a second comparison of the signal strength of the candidate network to a second threshold; in response to the determining that handover is required, transmit a second query regarding whether a resource of the candidate network is available to support the terminal'"'"'s handover; in response to receiving a response to the second query, determine that the candidate network is a target network; and in response to the determining that the candidate network is the target network, transmit a request to perform handover involving the target network.
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Specification