Modified dual symbol rate for uplink mobile communications
US7808964B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 29, 2007 |
| Grant date | Oct 5, 2010 |
| Priority date | — |
| Expiry date | Nov 11, 2028 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L27/18
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
The specification and drawings present a new method, system, apparatus and software product for using a new modified dual symbol rate (MDSR) in an uplink direction in mobile communication systems. The communication between the mobile station and the network element may be performed within evolved GSM/EDGE radio access networks. The MDSR can be for example one and a half times a symbol rate of an uplink speech service, e.g., the current GSM/EDGE symbol rate (13/48 MHz) in the mobile communication system, thus the MDSR may be substantially 13/32 MHz or about 405 kHz. The uplink signal with the MDSR may be modulated, e.g., using a quadrature amplitude modulation (QAM), e.g., 16-QAM with 16 states and/or a quadrature phase-shift keying (QPSK, or π/4-QPSK) modulation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.