Wireless communication system
US11005686B2 · kind B2 · utility
0Cited by
29References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 2, 2019 |
| Grant date | May 11, 2021 |
| Priority date | — |
| Expiry date | Jul 2, 2039 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S370/913
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
Methods and apparatus for communicating circuit switched voice data with a first cellular radio access network (RAN) and communicating voice over Internet protocol (VoIP) packets using session initiation protocol (SIP) with a second cellular RAN. The second cellular RAN does not support circuit switched voice communication.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.