Title:
EARLY-MEDIA SERVICE CONTROL DEVICE, EARLY-MEDIA SERVICE CONTROL METHOD, AND STORAGE MEDIUM HAVING PROGRAM STORED THEREON
Document Type and Number:
WIPO Patent Application WO/2017/150281
Kind Code:
A1
Abstract:
[Problem] To enable provision of an early-media service even when a caller and a call receiver use different early-media methods in the IMS. [Solution] When a parameter included in a session start request indicates that a terminal device on the transmitting side of the session start request has a resource thereof being reserved, a parameter value rewrite unit rewrites the value of the parameter into a value indicating that the resource is not reserved. A session start request transmission control unit controls a communication unit to cause a session start request after the value of the parameter is rewritten to be transmitted to a network on the receiving side of the session start request. When the parameter value rewrite unit has not rewritten the value of the parameter, the session start request as received is transmitted. When receiving a response indicating that a resource is reserved in a terminal device on the receiving side of the session start request, a calling-in-progress notification transmission control unit controls the communication unit so that calling-in-progress notification is transmitted to the terminal device on the transmitting side of the session start request.
Inventors:
SARASHIYA KOICHI (JP)
Application Number:
PCT/JP2017/006399
Publication Date:
September 08, 2017
Filing Date:
February 21, 2017
Export Citation:
Assignee:
NEC CORP (JP)
International Classes:
H04M3/00; H04W80/10
Foreign References:
| JP2015162827A | 2015-09-07 |
Other References:
CT3: "CRs on Inter-IMS NNI Option Items", 3GPP TSG-CT#56 CP-120348, 15 June 2012 (2012-06-15), XP055601229, Retrieved from the Internet
Attorney, Agent or Firm:
SHIMOSAKA Naoki (JP)
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