Method and apparatus for processing handover of terminal in mobile communication system
First Claim
Patent Images
1. A method by a source base station in a mobile communication system, the method comprising:
- determining a handover of a terminal to a target base station;
requesting information including an identification of content to be transmitted to the terminal, from a source cache server connected to the source base station over a backhaul network;
transmitting a handover request message comprising the requested information including the identification of the content, to the target base station;
receiving a response message corresponding to the handover request message from the target base station;
delivering a next content request message of the terminal, received from the target base station, to the source cache server; and
delivering a redirection message including an address of a server in which a next content is stored, received from the source cache server, to the target base station,wherein the redirection message is transmitted from the target base station to the terminal.
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Abstract
A method and an apparatus for processing a handover of a terminal in a mobile communication system are provided. The method includes determining, by a source evolved-NodeB (eNB), a handover of a User Equipment (UE) to a target eNB, obtaining information about content transmitted to the UE from a source cache server connected to the source eNB over a backhaul network, and transmitting the content information to a target eNB.
13 Citations
23 Claims
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1. A method by a source base station in a mobile communication system, the method comprising:
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determining a handover of a terminal to a target base station; requesting information including an identification of content to be transmitted to the terminal, from a source cache server connected to the source base station over a backhaul network; transmitting a handover request message comprising the requested information including the identification of the content, to the target base station; receiving a response message corresponding to the handover request message from the target base station; delivering a next content request message of the terminal, received from the target base station, to the source cache server; and delivering a redirection message including an address of a server in which a next content is stored, received from the source cache server, to the target base station, wherein the redirection message is transmitted from the target base station to the terminal. - View Dependent Claims (2, 3, 4, 5)
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6. A method by a target base station in a mobile communication system, the method comprising:
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receiving a handover request message, comprising information including an identification of content to be transmitted to a terminal, from a source base station; transmitting a content determination request message, comprising the information including the identification of the content, to a target cache server connected to the target base station over a backhaul network; receiving a content determination result, indicating whether the target cache server has pre-fetched the content transmitted to the terminal, from the target cache server; transmitting a handover response message, including the content determination result, to the source base station; delivering a next content request message, received from the terminal, to the source base station; and delivering a redirection message including an address of a server in which a next content is stored, received from the source base station, to the terminal. - View Dependent Claims (7, 8, 9, 10)
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11. A source base station in a mobile communication system, the source base station comprising:
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a wireless transceiver configured to transmit and receive signals and data to and from a terminal; an interface configured to transmit and receive signals and data to and from a source cache server connected to the source base station over a backhaul network; and at least one processor coupled to the wireless transceiver and the interface, wherein the at least one processor is configured to control to; determine a handover of the terminal to a target base station, request information including an identification of content to be transmitted to the terminal from the source cache server, transmit a handover request message, comprising the requested information including the identification of the content, to the target base station, receive a response message corresponding to the handover request message from the target base station, deliver a next content request message of the terminal, received from the target base station, to the source cache server, and deliver a redirection message including an address of a server in which a next content is stored, received from the source cache server, to the target base station, wherein the redirection message is transmitted from the target base station to the terminal. - View Dependent Claims (12, 13, 14, 15)
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16. A target base station in a mobile communication system, the target base station comprising:
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a wireless transceiver configured to transmit and receive signals and data to and from a terminal; an interface configured to transmit and receive signals and data to and from a target cache server connected to the target base station over a backhaul network; and at least one processor coupled to the wireless transceiver and the interface, wherein the at least one processor is configured to control to; receive a handover request message, comprising information including an identification of content to be transmitted to the terminal, from a source base station, transmit a content determination request message comprising the information including the identification of the content to the target cache server, receive a content determination result, indicating whether the target cache server has pre-fetched the content transmitted to the terminal, from the target cache server, transmit a handover response message comprising the content determination result to the source base station, deliver a next content request message, received from the terminal, to the source base station; and deliver a redirection message including an address of a server in which a next content is stored, received from the source base station, to the terminal. - View Dependent Claims (17, 18, 19, 20)
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21. A method by a source cache server in a mobile communication system, the method comprising:
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receiving a message which requests information including an identification of content to be transmitted to a terminal, from a source base station; transmitting the information including the identification of the content to the source base station; and receiving a content check result, indicating whether or not a target cache server connected to a target base station of the terminal has the content transmitted to the terminal, from the source base station; receiving a next content request message of the terminal; identifying an address of a server in which a next content is stored; and transmitting a redirection message including the address of the server in which next content is stored, to the terminal. - View Dependent Claims (22, 23)
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Specification