Method of positioning the antennas of a data transmission system

• US 20060258402A1
• Filed: 05/03/2006
• Published: 11/16/2006
• Est. Priority Date: 05/13/2005
• Status: Active Grant

• Current Assignee: Thomson Licensing (Vantiva SA)
• Original Assignee: Thomson Licensing (Vantiva SA)
• Inventors: Demoulin, Vincent, Auffret, Eric, Guillouard, Samuel, Mocquard, Olivier
• Granted Patent: US 7,348,924 B2
• Time in Patent Office: Days
• US Class Current: 455/562.100
• CPC Class Codes: H04B 7/0491 using two or more sectors, i.e. sector diversity
• CPC Class Codes: H04B 7/0613 using simultaneous transmission H04B7/0686 takes precedence
• CPC Class Codes: H04B 7/10 Polarisation diversity; Directional diversity

Abstract

The invention pertains to a method of positioning antennas with sectorization in a data transmission system. The method makes it possible to search, by successive approximations, for the sector of each antenna allowing optimal reception of the information. The search step is repetitive.

Claims

1. Method of positioning antennas in a data transmission system comprising a system combining N antennas with sectorization wherein, each antenna operating according to a defined sector, the method comprises:

an initialization step and

a repetitive step of searching, by successive approximations, for the sector of each antenna allowing optimal reception of the information.

2. Method of positioning antennas according to claim 1, wherein the initialization step consists in identifying the N antennas concerned, in determining a selection parameter and in arbitrarily choosing a sector for each of the antennas concerned.

3. Method of positioning antennas according to claim 2, wherein the identification of the N antennas is done by numbering each antenna.

4. Method of positioning antennas according to claim 2, wherein the selection parameter is the power of the signal received.

5. Method of positioning antennas according to claim 2, wherein the selection parameter is the “

signal-to-noise and interferers”

ratio of the signal received.

6. Method of positioning antennas according to claim 1, wherein the step of searching for the sector of each antenna allowing optimal reception of the information comprises the following steps:

measuring the selection parameter received by each of the N antennas operating according to a given sector,

comparing these N parameters and identifying the antenna whose parameter is the lowest and

changing the sector of this antenna, until a maximum level of the parameter received is obtained.

7. Method of positioning antennas according to claim 6, wherein the step of searching for the sector of each antenna takes place with the dispatch of each new data frame.

8. Method of positioning antennas according to claim 7, wherein a minimum threshold of the selection parameter is fixed so as to be able to deselect the antenna whose selection parameter does not exceed this threshold.

9. Method of positioning antennas according to claim 1, wherein, for a situation defined as stable for an antenna, when the parameter received for all the sectors of this antenna is less than the parameters received by the other antennas, the recurrence of the step of searching for the sector of each antenna is reduced.

10. Method of positioning antennas according to claim 1, wherein it also applies to any system combining N antennas with different polarizations (M polarizations).