Title:
A METHOD FOR SWITCHING THE SESSION CONTROL PATH OF IP MULTIMEDIA CORE NETWORK SUBSYSTEM CENTRALIZED SERVICE
Document Type and Number:
WIPO Patent Application WO/2009/015525
Kind Code:
A1
Abstract:
A method for switching the session control path of IP multimedia core network subsystem
centralized service is provided. When the condition for switching the session
control path is satisfied during the ICS session based on the first session control
path, the following steps are performed which includes that: the one of the ICS
UE and ICCF corresponding to the ICS session transmits the switching request
of the session control path to the other; the receiving party identifies the ICS
session corresponding to the request after receiving the request, and transmits
the acknowledgement response of the session control path to the transmitting party;
the ICCF and ICS UE set the identified session control path corresponding to the
ICS session to be the second session control path and transfer the following session
control information associated with the ICS session via the second session control
path; the first and second session control path are the one of the PS session control
path and the CS session control path; the first session control path is different
from the second session control path.
Inventors:
HAO ZHENWU (CN)
Application Number:
PCT/CN2007/003440
Publication Date:
February 05, 2009
Filing Date:
December 04, 2007
Export Citation:
Assignee:
ZTE CORP (CN)
HAO ZHENWU (CN)
HAO ZHENWU (CN)
International Classes:
H04L29/06; H04L12/50; H04L12/56; H04W36/00; H04W76/04; H04W28/04; H04W48/08; H04W80/10
Domestic Patent References:
| WO2006010614A2 | 2006-02-02 |
Foreign References:
| CN1882119A | 2006-12-20 | |||
| CN1881958A | 2006-12-20 | |||
| JP2006080673A | 2006-03-23 |
Other References:
See also references of EP 2175605A4
Attorney, Agent or Firm:
AFD CHINA INTELLECTUAL PROPERTY LAW OFFICE (Suite B 305A 8 Xueqing RoadHaidian District, Beijing 5, CN)
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