IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0394003
(2009-02-26)
|
등록번호 |
US-8290468
(2012-10-16)
|
우선권정보 |
JP-2008-046586 (2008-02-27) |
발명자
/ 주소 |
|
출원인 / 주소 |
|
대리인 / 주소 |
|
인용정보 |
피인용 횟수 :
0 인용 특허 :
4 |
초록
▼
An interface unit receives a scheduled timing with which to execute a handover and a transmission delay time present in a communication with a terminal apparatus, from the terminal apparatus via a source base station apparatus. A switching control unit sorts out original data, to be transmitted to t
An interface unit receives a scheduled timing with which to execute a handover and a transmission delay time present in a communication with a terminal apparatus, from the terminal apparatus via a source base station apparatus. A switching control unit sorts out original data, to be transmitted to the terminal apparatus, into first data to be transmitted via the source base station apparatus and second data to be transmitted via a destination base station apparatus, based on the scheduled timing and the transmission delay time received. The interface unit outputs the sorted-out first data to the source base station apparatus and outputs the sorted-out second data to the destination base station apparatus.
대표청구항
▼
1. A control apparatus, comprising: an input unit which receives a scheduled timing with which to execute a handover and a transmission delay time with a terminal apparatus, from the terminal apparatus via a source base station apparatus;a sorting unit which sorts out original data, to be transmitte
1. A control apparatus, comprising: an input unit which receives a scheduled timing with which to execute a handover and a transmission delay time with a terminal apparatus, from the terminal apparatus via a source base station apparatus;a sorting unit which sorts out original data, to be transmitted to the terminal apparatus, into first data to be transmitted via the source base station apparatus and second data to be transmitted via a destination base station apparatus, based on the scheduled timing and the transmission delay time received by the input unit; andan output unit which outputs the first data sorted out by the sorting unit to the source base station apparatus and which outputs the second data sorted out thereby to the destination base station apparatus. 2. A control apparatus according to claim 1, further comprising an acquisition unit which acquires a scheduled completion timing of handover, wherein the output unit delays an output of the second data based on the scheduled timing acquired by the acquisition unit. 3. A control apparatus according to claim 1, further comprising an execution unit which measures the transmission delay time with the terminal apparatus routed through the source base station apparatus. 4. A control apparatus according to claim 1, further comprising a detector which detects a failure of connection between the destination base station apparatus and the terminal apparatus, wherein when the failure of connection is detected by the detector, the output unit outputs the second data to a next available destination base station apparatus. 5. A control apparatus according to claim 4, wherein the input unit further receives information on the destination base station apparatus, at least one next available destination base station apparatus and a period required for the handover by the terminal apparatus, from the terminal apparatus, wherein the output unit identifies the next available destination base station apparatus from the information received by the input unit, andafter the failure of connection is detected by the detector, the output unit delays an output of the second data based on the period required for the handover. 6. A control apparatus according to claim 1, further comprising a detector which detects a failure of connection between the destination base station apparatus and the terminal apparatus, wherein when the failure of connection is detected by the detector, the output unit informs a plurality of base station apparatuses of the second data. 7. A terminal apparatus, comprising: a measurement unit which measures a transmission delay time with a control apparatus routed through a source base station apparatus;a determining unit which determines a scheduled timing with which to execute a handover, based on the transmission delay time measured by the measurement unit;a notification unit which conveys the scheduled timing, with which to execute a handover, determined by the determining unit and the transmission delay time measured by the measurement unit to the control apparatus via the source base station apparatus; anda communication unit which executes communication with the source base station apparatus up to the scheduled timing and with a destination base station apparatus after the scheduled timing. 8. A terminal apparatus according to claim 7, wherein the determining unit further determines the destination base station apparatus and at least one substitute destination base station, wherein the notification unit further notifies information on the destination base station apparatus and the at least one substitute destination base station determined by the determining unit to the control apparatus via the source base station apparatus. 9. A method for controlling a handover, comprising: receiving a scheduled timing with which to execute the handover and a transmission delay time with a terminal apparatus, from the terminal apparatus via a source base station apparatus;sorting out original data, to be transmitted to the terminal apparatus, into first data to be transmitted via the source base station apparatus and second data to be transmitted via a destination base station apparatus, based on the scheduled timing and the transmission delay time received by the inputting; andoutputting the first data sorted out by the sorting to the source base station apparatus and outputting the second data sorted out thereby to the destination base station apparatus. 10. A method for controlling a handover, comprising: measuring a transmission delay time with a control apparatus routed through a source base station apparatus;determining a scheduled timing with which to execute the handover, based on the transmission delay time measured by the measuring;conveying the scheduled timing, with which to execute the handover, determined by the determining and the transmission delay time measured by the measuring to the control apparatus via the source base station apparatus; andexecuting communication with the source base station apparatus up to the scheduled timing and with a destination base station apparatus after the scheduled timing.
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