Patent · US Expired

Method and radio station for data transmission

US6621874B1 · kind B1 · utility

2Cited by

7References

13Claims

0Family size

Assignee

Siemens Aktiengesellschaft · DE

Inventors

Michael Farber · Wolfratshausen, DE
Norbert Löchel · Hersbruck, DE
Franz Schreib · Hersbruck, DE

Key dates

Filing date	Aug 11, 2000
Grant date	Sep 16, 2003
Priority date	—
Expiry date	Aug 11, 2020

Classification

Technology area (CPC H)Electricity
CPC primaryH04W28/06
WIPO fieldDigital communication
WIPO sectorElectrical engineering

Abstract

Data are transmitted through a radio interface in a GSM mobile radio system. The transmission side performs a continuous phase modulation of the transmission signals for the data to be transmitted. A bandwidth is used which is narrower than that used during a Gaussian minimum shift keying modulation with a modulation bandwidth BT equal to 0.3 so that the radio interface gives right of access on at least one channel with a reduced bandwidth. On the reception side, data detection is carried out without any discrimination between channels with different bandwidths. This enables substantially increased capacity of mobile radiotelephone networks and support for indoor and asymmetrical data transmission applications.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.