Network node and method therein for handover in wireless communication network
First Claim
1. A method performed in a network node for assisting a communication device to perform handover from a serving cell to a target cell in a communication network, wherein the network node is a serving node for the communication device in the serving cell, the method comprising:
- obtaining a first round trip time between the network node and a server;
obtaining a second round trip time between a target node in the target cell and the server;
deciding whether or not to instruct the communication device to perform handover from the serving cell to the target cell by considering at least the first round trip time and the second round trip time; and
conditionally instructing the communication device to perform handover from the serving cell to the target cell in accordance with the decision,wherein deciding whether or not to instruct the communication device to perform handover from the serving cell to the target cell comprises;
deciding if the first round trip time is longer than the second round trip time, and if so then deciding to perform handover from the serving cell to the target cell.
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Abstract
A network node and method therein for assisting a communication device to perform handover from a serving cell to a target cell in a communication network are disclosed. The network node is configured to obtain a first round trip time between the network node and a server and obtain a second round trip time between a target node in the target cell and the server. The network node is further configured to instruct the communication device to perform handover from the serving cell to the target cell based on at least the first round trip time and the second round trip time.
18 Citations
16 Claims
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1. A method performed in a network node for assisting a communication device to perform handover from a serving cell to a target cell in a communication network, wherein the network node is a serving node for the communication device in the serving cell, the method comprising:
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obtaining a first round trip time between the network node and a server; obtaining a second round trip time between a target node in the target cell and the server; deciding whether or not to instruct the communication device to perform handover from the serving cell to the target cell by considering at least the first round trip time and the second round trip time; and conditionally instructing the communication device to perform handover from the serving cell to the target cell in accordance with the decision, wherein deciding whether or not to instruct the communication device to perform handover from the serving cell to the target cell comprises; deciding if the first round trip time is longer than the second round trip time, and if so then deciding to perform handover from the serving cell to the target cell. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A network node for assisting a communication device to perform handover from a serving cell to a target cell in a communication network, wherein the network node is a serving node for the communication device in the serving cell, the network node is configured to:
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obtain a first round trip time between the network node and a server; obtain a second round trip time between a target node in the target cell and the server; and decide whether or not to instruct the communication device to perform handover from the serving cell to the target cell by considering at least the first round trip time and the second round trip time; and conditionally instruct the communication device to perform handover from the serving cell to the target cell based on at least the first round trip time and the second round trip time in accordance with the decision, wherein the network node being configured to decide whether or not to instruct the communication device to perform handover from the serving cell to the target cell comprises being configured to; decide if the first round trip time is longer than the second round trip time, and if so then decide to perform handover from the serving cell to the target cell. - View Dependent Claims (9, 10, 11, 12, 13, 14)
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15. A method performed in a network node for assisting a communication device to perform handover from a serving cell to a target cell in a communication network, wherein the network node is a serving node for the communication device in the serving cell, the method comprising:
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obtaining a first round trip time between the network node and a server; obtaining a second round trip time between a target node in the target cell and the server; deciding whether or not to instruct the communication device to perform handover from the serving cell to the target cell by considering at least the first round trip time and the second round trip time; and conditionally instructing the communication device to perform handover from the serving cell to the target cell in accordance with the decision, wherein deciding whether or not to instruct the communication device to perform handover from the serving cell to the target cell comprises; deciding if the second round trip time is longer than the first round time but shorter than a pre-determined threshold and a signal quality of the target cell is better than the serving cell, and if so then deciding to perform handover from the serving cell to the target cell.
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16. A network node for assisting a communication device to perform handover from a serving cell to a target cell in a communication network, wherein the network node is a serving node for the communication device in the serving cell, the network node is configured to:
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obtain a first round trip time between the network node and a server; obtain a second round trip time between a target node in the target cell and the server; and decide whether or not to instruct the communication device to perform handover from the serving cell to the target cell by considering at least the first round trip time and the second round trip time; and conditionally instruct the communication device to perform handover from the serving cell to the target cell based on at least the first round trip time and the second round trip time in accordance with the decision, wherein the network node configured to decide whether or not to instruct the communication device to perform handover from the serving cell to the target cell comprises being configured to; decide if the second round trip time is longer than the first round time but shorter than a pre-determined threshold and a signal quality of the target cell is better than the serving cell, and if so then decide to perform handover from the serving cell to the target cell.
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Specification