Method for detecting the validity of downlink control information in telecommunication user equipment, decoder and baseband receiver for performing same
US8453020B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jun 13, 2011 |
| Grant date | May 28, 2013 |
| Priority date | — |
| Expiry date | Nov 15, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L1/0068
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A method for detecting validity of downlink control information in telecommunication user equipment and a decoder and baseband receiver to perform the method are provided. The object of avoiding falsely detecting payload data and misinterpreting them is achieved by reverse encoding a bit output sequence of a Viterbi decoder; determining hard bits from a soft-bit input sequence of the decoder; determining a bit count of real received bits; comparing the reverse encoded bit stream to the determined hard bit stream and counting the number of mismatches to obtain an error count; comparing a bit error rate which is defined as a quotient of the error count and the bit count against a predefined threshold value; and rejecting the payload as invalid if said bit error rate is above said threshold value, even if a cyclic redundancy check of the payload gives a correct result.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.