Process and device for information transmission between radioelectric transceivers of the same network operating in frequency hopping

• US 5,214,788 A
• Filed: 05/04/1990
• Issued: 05/25/1993
• Est. Priority Date: 05/10/1989
• Status: Expired due to Fees

• Current Assignee: Thomson-CSF
• Original Assignee: Thomson - Csf
• Inventors: Singlas, Yves, Eberland, Alain, Delaperriere, Jean-Paul
• Primary Examiner(s): Eisenzopf, Reinhard J.
• Assistant Examiner(s): BELZER, CHRISTINE
• Application Number:
  US07/519,115
• Time in Patent Office: 1,117 Days
• Field of Search: 455/32, 455/34, 455/161, 455/165, 455/76, 455/77, 455/75, 455/234, 375/1
• US Class Current: 375/132
• CPC Class Codes: H04B 1/713 using frequency hopping
• CPC Class Codes: H04B 1/715 Interference-related aspects
• CPC Class Codes: H04B 2001/7154 with means for preventing interference

Abstract

The process consists in:

using at least one transceiver station to search for a set of usable frequencies,

transmitting the set of usable frequencies to the other transceivers in the network

and performing the communication transfers in frequency hopping in the set of usable frequencies communicated to all the transceivers in the network.

Claims

1. A process of transmitting information between radio transceivers in the same network operating in frequency hopping, comprising the steps of:

using at least one transceiver station to search for a set of usable frequencies from channels it receives;

determining a first minimum comparison threshold value corresponding to the channel with the weakest reception level;

determining a second comparison threshold value by adding a predetermined incremental value to the first minimum comparison threshold value;

selecting a set of usable frequencies from the other channels received, the set of usable frequencies being channels with reception levels between the first and the second minimum comparison threshold values;

storing a limited number of the set of usable frequencies, the limited number corresponding to frequencies within the set of usable frequencies with the lowest reception levels;

transmitting the set of usable frequencies to the other transceivers in the network; and

transmitting, during frequency hopping, the set of usable frequencies to all of the transceivers in the network.

2. The process according to claim 1 wherein, when the transceivers in the network are geographically distant from each other, the set of usable frequencies are determined by all or some of the transceivers in the network and a concatenation of all of the usable frequencies is performed to form the set of usable frequencies.