Personal mobile communications device having multiple units
US6882870B2 · kind B2 · utility
21Cited by
24References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 26, 2001 |
| Grant date | Apr 19, 2005 |
| Priority date | — |
| Expiry date | Aug 17, 2022 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W88/02
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A mobile communication device is constructed for use in communicating with a wireless communications network. The device is adapted for carrying on or near the person of the user. For ease of use and adaptability, the various functions of the device are separated into multiple units. The units communicate with each other through a localized communication system in which at least one local traffic channel is generated by the primary unit. To permit bi-directional communication among the units, multiple access protocols are used, either TDMA or CDMA.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.