Rate matching and soft channel bits storage for superposition coding
US9893843B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 28, 2015 |
| Grant date | Feb 13, 2018 |
| Priority date | — |
| Expiry date | Mar 24, 2036 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W72/12
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
Methods for rate matching with soft buffer size setting at the transmitter and soft channel bits storage at the receiver for superposition coding are proposed. In the superposition coding scheme, a transport block intended to one UE needs to be decoded by another UE's receiver. However, the soft buffer sizes per code block of the two receivers may not be the same since the size depends on the UE category. The base station can signal the soft buffer size used at the transmitter for rate matching to the UEs for superposition decoding. A UE stores information bits associated with an interfering signal in its soft buffers in accordance with the soft buffer size used at the transmitter for rate matching. As a result, the UE can decode and subtract the interfering signal from the desired signal for superposition coding.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.