(19) | |
| (11) | EP 2 384 051 A3 |
(12) | EUROPEAN PATENT APPLICATION |
(88) | Date of publication A3: | | 30.11.2011 Bulletin 2011/48 |
(43) | Date of publication A2: | | 02.11.2011 Bulletin 2011/44 |
(22) | Date of filing: 21.02.2011 |
| (51) | International Patent Classification (IPC): |
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(84) | Designated Contracting States: | | AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR | | Designated Extension States: | | BA ME |
(30) | Priority: | 22.02.2010 US 306548 P 14.04.2010 US 323879 P 16.04.2010 US 324766 P 01.02.2011 US 19195
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(62) | Application number of the earlier application in accordance with Art. 76 EPC: | | 11001411.5 / 2365708 |
(71) | Applicant: HTC Corporation | | Taoyuan County 330 (TW) |
| (72) | Inventor: | | - Wu, Chih-Hsiang
Taoyuan City
Taoyuan County 330 (TW)
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(74) | Representative: Emde, Eric et al | | Wagner & Geyer
Gewürzmühlstrasse 5 80538 München 80538 München (DE) |
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(54) | Method and apparatus for handling SRVCC in an inter radio access technology handover |
(57) The techniques introduced herein provide a system and method for determining whether an inter-RAT handover is an SRVCC handover, and for performing the subsequent SRVCC handover. The techniques include receiving a handover command message that does not include SRVCC related information elements, for example "RAB info to replace," but continuing with an SRVCC handover using a circuit-switched RAB provided in the information for setup. The techniques also include receiving a handover command message that does include SRVCC related information elements and performing the SRVCC handover by an alternative method.