Avoiding transmitter collision sessions in femtocells arrays
US8626186B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 6, 2008 |
| Grant date | Jan 7, 2014 |
| Priority date | — |
| Expiry date | Oct 4, 2028 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W84/045
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
Control unit within a femtocell base station is arranged to detect a transmission collision situation and resolves it by adjusting the timing of the transmission signal and consequently the frame position gradually over time. The adjustment (or shift) is performed in a slow enough rate such that the User Equipments currently connected (camped) to the femtocell base station remain connected. Additionally, a method is also provided. The method comprises: detecting neighboring base stations; detecting frame boundaries of the transmitting signal of each detected neighboring base station; calculating optimal transmit position; setting transmit position to calculated optimal transmit position; and maintaining optimal transmit position by gradually adjusting transmit position over time. In case, detecting neighboring base stations is not possible, the method comprises: detecting absolute time drifting in view of an absolute accurate time reference and maintaining constant absolute transmit position by gradually adjusting transmit position over time.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.