Cluster head assisted method for converting user terminal from D2D communication to cellular communication
US8948770B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 12, 2012 |
| Grant date | Feb 3, 2015 |
| Priority date | — |
| Expiry date | Jan 12, 2032 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W88/04
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
The present invention discloses a cluster head assisted method for converting a user terminal from device-to-device (D2D) communication to cellular communication. When quality of a D2D link between a user terminal and a cluster head is lower than a predetermined threshold, if the user terminal has to leave the cluster but still expects to continue an original the service, the user terminal performs cell search and random access, and establishes a radio resource control (RRC) connection with a target base station of a cellular network. Switching from D2D communication to cellular communication is implemented with the assistance of the cluster head, and a communication manner after the switching is provided. The present invention implements mobile switching from D2D communication in distributed cluster communication to cellular communication, which can reduce route search delay and save wireless resources.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.