Method for mapping physical hybrid automatic repeat request indicator channel
US7894330B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 18, 2009 |
| Grant date | Feb 22, 2011 |
| Priority date | — |
| Expiry date | Jun 4, 2029 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L5/0016
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A method for mapping a physical hybrid automatic repeat request indicator channel (PHICH) is described. The method for mapping a PHICH includes determining an index of a resource element group transmitting a repetitive pattern of the PHICH, according to a ratio of the number of available resource element groups in a symbol in which the PHICH is transmitted and the number of available resource element groups in a first or second OFDM symbol, and mapping the PHICH to the symbol according to the determined index. In transmitting the PHICH, since efficient mapping is performed considering available resource elements varying with OFDM symbols, repetition of the PHICH does not generate interference between neighbor cell IDs and performance is improved.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.