Terminal apparatus, base station apparatus, control method, and computer-readable storage medium for executing conditional handover
AssigneeKddi Corporation
InventorHiroki TAKEDA
Life of this patent
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Abstract
A terminal apparatus obtains, from a base station apparatus that is currently connected to the terminal apparatus, a communication parameter that is to be used when the terminal apparatus is connected to a candidate base station apparatus that is a candidate for handover destination and a condition for executing handover to the candidate base station apparatus; and transmits, to the candidate base station apparatus, a message that includes identification information associated with the obtained communication parameter, when handover to the candidate base station apparatus is performed based on the obtained condition.
Claims19
A terminal apparatus comprising:
- an obtaining unit configured to obtain, from a base station apparatus that is currently connected to the terminal apparatus, a communication parameter that is to be used when the terminal apparatus is connected to a candidate base station apparatus that is a candidate for handover destination and a condition for executing handover to the candidate base station apparatus;
- and
- a transmitting unit configured to transmit, to the candidate base station apparatus, a message that includes identification information associated with the communication parameter, when handover to the candidate base station apparatus is performed based on the condition.
A base station apparatus that is a candidate for destination of handover to be performed by a terminal apparatus, the base station apparatus comprising:
- a notification unit configured to notify the terminal apparatus of a communication parameter that is to be used when the terminal apparatus is connected to the base station apparatus, via another base station apparatus that is currently connected to the terminal apparatus;
- a receiving unit configured to receive, from the terminal apparatus, a message that includes identification information associated with the communication parameter notified from the other base station apparatus to the terminal apparatus, when the terminal apparatus executes handover to the base station apparatus;
- and
- a communication unit configured to communicate with the terminal apparatus using the communication parameter if the identification information included in the message is associated with the communication parameter notified by the notification unit.
A control method that is executed by a terminal apparatus, the method comprising:
- obtaining, from a base station apparatus that is currently connected to the terminal apparatus, a communication parameter that is to be used when the terminal apparatus is connected to a candidate base station apparatus that is a candidate for handover destination and a condition for executing handover to the candidate base station apparatus;
- and
- transmitting, to the candidate base station apparatus, a message that includes identification information associated with the communication parameter, when handover to the candidate base station apparatus is performed based on the condition.
A control method that is executed by a base station apparatus that is a candidate for destination of handover to be performed by a terminal apparatus, the control method comprising,
- notifying the terminal apparatus of a communication parameter that is to be used when the terminal apparatus is connected to the base station apparatus, via another base station apparatus that is currently connected to the terminal apparatus;
- receiving, from the terminal apparatus, a message that includes identification information associated with the communication parameter notified from the other base station apparatus to the terminal apparatus, when the terminal apparatus executes handover to the base station apparatus;
- and
- communicating with the terminal apparatus using the communication parameter if the identification information included in the message is associated with the notified communication parameter.
A non-transitory computer-readable storage medium that stores a program for causing a computer provided in a terminal apparatus to:
- obtain, from a base station apparatus that is currently connected to the terminal apparatus, a communication parameter that is to be used when the terminal apparatus is connected to a candidate base station apparatus that is a candidate for handover destination and a condition for executing handover to the candidate base station apparatus;
- and
- transmit, to the candidate base station apparatus, a message that includes identification information associated with the communication parameter, when handover to the candidate base station apparatus is performed based on the condition.
A non-transitory computer-readable storage medium that stores a program for causing a computer provided in a base station apparatus that is a candidate for destination of handover to be performed by a terminal apparatus to:
- notify a communication parameter that is to be used when the terminal apparatus is connected to the base station apparatus, to the terminal apparatus via another base station apparatus that is currently connected to the terminal apparatus;
- receive, from the terminal apparatus, a message that includes identification information associated with the communication parameter notified from the other base station apparatus to the terminal apparatus, when the terminal apparatus executes handover to the base station apparatus;
- and
- communicate with the terminal apparatus using the communication parameter if the identification information included in the message is associated with the notified communication parameter.
Dependencies are inferred from the claim text.