Methods and apparatus for radio link monitoring in new carrier type (NCT) in a long term evolution (LTE) system
US8976698B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 7, 2013 |
| Grant date | Mar 10, 2015 |
| Priority date | — |
| Expiry date | May 10, 2033 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L5/0048
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
Certain aspects provide methods and apparatus for performing radio link monitoring (RLM) based on channel state information reference signals (CSI-RSs). Such RLM may be performed for certain carriers, such as New Carrier Type (NCT) in a Long Term Evolution (LTE) system, for example, in which reference signals conventionally used for RLM (e.g., common reference signals (CRSs) in LTE Rel-8/9/10) are not available in every subframe. Radio link failure (RLF) may be declared based on the RLM. One example method generally includes determining at least one of a first set of CSI-RS resources for use in channel estimation to perform RLM measurements or a second set of CSI-RS resources for use in interference estimation to perform the RLM measurements and performing the RLM measurements based on the one or more determined sets of CSI-RS resources. Certain aspects provide methods and apparatus for performing radio resource management (RRM) based on CSI-RSs.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.