Distributed radio communication base station system, base band unit, remote radio unit, and method for operating distributed radio communication base station system
US9866327B2 · kind B2 · utility
3Cited by
0References
21Claims
0Family size
Assignee
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Key dates
| Filing date | Oct 10, 2013 |
| Grant date | Jan 9, 2018 |
| Priority date | — |
| Expiry date | Oct 10, 2033 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W88/08
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
Since a sampling frequency of RRU is always constant, A/D conversion may be performed with a sampling frequency higher than necessary with respect to a frequency band width of a radio signal.A sampling frequency change function, and the sampling frequency is reduced in a range where a aliasing component does not deteriorate signal quality of a desired signal component when the sampling frequency is decreased, based on radio band allocation information, or signal transmission between BBU and RRU is stopped in a no signal section, whereby a band required for digital RoF transmission between the BBU and the RRU is reduced.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.