Apparatus and method for data message communication
US9344984B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 5, 2013 |
| Grant date | May 17, 2016 |
| Priority date | — |
| Expiry date | May 26, 2034 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W74/002
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A method and user device are for communicating data from the user device by transmitting a synchronizing preamble having no timing advance, the synchronizing preamble comprising a base sequence that has been cyclically shifted by N shift index durations. The user device receives from a network station a response that indicates that a preamble was received from the user device having the base sequence cyclically shifted by N−1 shift index durations. The user device determines, based at least partially on the response, that corrective action is appropriate. The user device performs one of transmitting a modified form of synchronizing preamble, transmitting the data as a data message having a timing advance, and barring further attempts to transmit the data to the network station for a defined duration.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.