Title:
【発明の名称】データの有効な無線伝送のための方法及び装置
Document Type and Number:
Japanese Patent JP3444901
Kind Code:
B2
Abstract:
The invention relates to a method and a device for digital data radiotransmission between a fixed station ( 1 ) and at least one mobile station ( 2, 3 ) at one or several carrier frequencies (F 1 , F 2 . . . ), wherein the data is transmitted in several time slots (Z 1 , Z 2 . . . ) according to the time-multiplex technique. A specific amount of time is required to change from one carrier frequency to another carrier frequency using a slow-hopping HF module. The data is transmitted in an active followed by an inactive time slot during which no data is transmitted and which is sufficient for the HF module to program the frequency for the following active time slot. According to the invention, an inactive time slot is shorter than an active time slot.
Inventors:
Jurgen Cockman
Anton Krug
Hermann-Josef Telgrane
Uwe Giddon
Peter Shriva
Anton Krug
Hermann-Josef Telgrane
Uwe Giddon
Peter Shriva
Application Number:
JP50350399A
Publication Date:
September 08, 2003
Filing Date:
August 14, 1997
Export Citation:
Assignee:
Siemens Aktiengesellschaft
International Classes:
H04J4/00; H04B7/26; H04J3/00; H04B1/713; H04J13/00; (IPC1-7): H04J3/00; H04B7/26; H04J4/00
Domestic Patent References:
| JP9162838A | ||||
| JP311833A | ||||
| JP6152510A |
Other References:
【文献】英国特許出願公開2295930(GB,A)
【文献】欧州特許出願公開767551(EP,A2)
【文献】欧州特許出願公開767551(EP,A2)
Attorney, Agent or Firm:
Toshio Yano (2 outside)