(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

(21)Application number: 11006077.9

(22)Date of filing:  21.02.2011
(51)International Patent Classification (IPC): 
H04W 36/00(2009.01)
(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

(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)

(74)Representative: Emde, Eric et al
Wagner & Geyer Gewürzmühlstrasse 5
80538 München
80538 München (DE)

  


(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.





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