Method for mapping physical random access channels
US8477712B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 26, 2010 |
| Grant date | Jul 2, 2013 |
| Priority date | — |
| Expiry date | Jul 15, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L5/0073
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
The present invention discloses a method for mapping physical random access channels, which comprises the following steps: the PRACHs in the same time domain location are mapped from low frequency to high frequency, or from high frequency to low frequency in usable frequency resource, wherein one PRACH occupies 6 resource blocks, and the frequency bands occupied by two adjacent PRACHs in the frequency domain do not overlap; or the PRACHs in the same time domain location are mapped from two sides to the middle in usable frequency resource, wherein one PRACH occupies 6 resource blocks, and the frequency bands occupied by two adjacent PRACHs in the frequency domain do not overlap. The present invention enables uniformly distributing the PRACHs which require to be processed by the same base station in the time domain, and decreasing the inter-cell interference of the second type PRACH to the utmost extent at the same time.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.