Universal mobile telephone system network with improved rate matching method
US6788657B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 6, 2000 |
| Grant date | Sep 7, 2004 |
| Priority date | — |
| Expiry date | Jan 24, 2023 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W84/04
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
In a UMTS network in which a single user can transmit or receive a number of services having different transmission power requirements over a single channel, a method of determining for each service the number of bits to be punctured or repeated to provide rate matching by the steps of deriving for each service the Energy per Bit per Noise density EB/NO required to achieve a desired Bit Error Rate; from each EB/MO deriving a value of the Energy per coded Symbol per Noise density ES/NO; and from ES/NO deriving a rate matching factor by which that ES/NO can be matched to the minimum Energy per coded Symbol per Noise density applicable to the channel in which to the services are multiplexed. The values of EB/NO are stored in a look up table in the BTS and each mobile; the BSC generates values of semi static rate matching factors and spreading factors for each service and transmits them to the BTS and mobiles so that the mobile can calculate from the received values and the values stored in the look up table the number of bits to be punctured or repeated.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.