Title:
APPARATUS AND METHOD OF PROVIDING VOICE CALL SERVICE
Document Type and Number:
WIPO Patent Application WO/2021/013172
Kind Code:
A1
Abstract:
An apparatus and a method of providing a voice call service are provided. The method includes maintaining cell lists of unreliable voice over long term evolution (VoLTE) cells, wherein the cell lists include a first cell list and a second cell list; and when receiving an unreliable VoLTE service from a modem, adding a cell to the first cell list. This can improve voice quality and reliability in a poor LTE coverage.
Inventors:
SHI YONGSHENG (US)
Application Number:
PCT/CN2020/103496
Publication Date:
January 28, 2021
Filing Date:
July 22, 2020
Export Citation:
Assignee:
GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP LTD (CN)
International Classes:
H04W36/00; H04W48/00
Foreign References:
| CN109257322A | 2019-01-22 | |||
| CN109451840A | 2019-03-08 | |||
| CN105636109A | 2016-06-01 | |||
| CN105704767A | 2016-06-22 | |||
| US20190132755A1 | 2019-05-02 | |||
| CN107241773A | 2017-10-10 | |||
| US20170026856A1 | 2017-01-26 | |||
| CN108513313A | 2018-09-07 | |||
| CN109275166A | 2019-01-25 | |||
| US20160360462A1 | 2016-12-08 |
Other References:
3GPP: "3GPP TR 23.750 V14.0.0； Technical Specification Group Services and System Aspects； Study for robust call setup for VoLTE subscriber in LTE (Release 14)", 3GPP TECHNICAL REPORT, 22 June 2016 (2016-06-22), pages 1 - 30, XP051123878
See also references of EP 3963939A4
See also references of EP 3963939A4
Attorney, Agent or Firm:
ESSEN PATENT & TRADEMARK AGENCY (CN)
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