Title:
METHOD AND APPARATUS FOR DUAL-MODE SINGLE-STANDBY WIRELESS VOICE CALL CONTINUITY BEFORE RINGING
Document Type and Number:
WIPO Patent Application WO/2021/043177
Kind Code:
A1
Abstract:
Proposed in embodiments of the present invention are a method and apparatus for dual-mode single-standby wireless voice call continuity before ringing. The method comprises: before ringing on a called side, receiving a handover request message sent by the called side; caching the handover request message; and when a preset response state from the called side is received, on the basis of the handover request message, performing a handover request operation in a preset manner. According to the method for dual-mode single-standby wireless voice call continuity before ringing provided in the embodiments of the present invention, bSRVCC handover of the called side may be converted into aSRVCC/eSRVCC handover that is clearly and completely defined in the 3GPP specification, which improves the bSRVCC handover success rate of the called user, thereby improving the total handover success rate of VoLTE SRVCC on an LTE network, and optimizing the call experience of VoLTE users on the LTE network.
Inventors:
ZHAO SHIRONG (CN)
Application Number:
PCT/CN2020/113082
Publication Date:
March 11, 2021
Filing Date:
September 02, 2020
Export Citation:
Assignee:
ZTE CORP (CN)
International Classes:
H04W36/00
Foreign References:
| CN109688610A | 2019-04-26 | |||
| CN106888486A | 2017-06-23 | |||
| CN104994542A | 2015-10-21 | |||
| CN108966274A | 2018-12-07 | |||
| CN107222896A | 2017-09-29 | |||
| JP2016082467A | 2016-05-16 |
Other References:
See also references of EP 4027699A4
Attorney, Agent or Firm:
KANGXIN PARTNERS, P.C. (CN)
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