Quality assessment of a communication connection in a radio-operated multi-hop hazard reporting system

1. A method for assessing a quality of a communication connection between a selected secondary station of a plurality of secondary stations and a main station of a radio-operated multi-hop hazard reporting system, which comprises the steps of:

determining a value of a first parameter for the selected secondary station with the value of the first parameter being indicative of a connection security only between the selected secondary station and the main station;

determining a value of a second parameter for the selected secondary station, with the value of the second parameter being indicative for connection securities only between respective directly adjacent secondary stations of the selected secondary station and the main station; and

assessing the quality of the communication connection between the selected secondary station and the main station based only on the value of the first parameter and the value of the second parameter.

2. The method according to claim 1 , wherein the value of the first parameter only depends on at least one of a distance between the selected secondary station and the main station and on a number of connections on communication paths independent of one another between the selected secondary station and the main station.

3. The method according to claim 2 , wherein the value of the second parameter only depends on distances between the respective directly adjacent secondary stations of the selected secondary station and the main station and on connections on communication paths independent of one another between the respective directly adjacent secondary stations of the selected secondary station and the main station.

4. The method according to claim 3 , which further comprises taking into account only the respectively directly adjacent secondary stations for the value of the second parameter, which by comparison with the selected secondary station adds an equal or a smaller distance from the main station.

5. The method according to claim 1 , which further comprises assigning a status at least to the selected secondary station, with the status being a measure for a number of communication paths independent of one another between the selected secondary station and the main station.

6. The method according to claim 5 , which further comprises classifying the status into different states.

7. The method according to claim 6 , which further comprises displaying a current status of the selected secondary station.

8. The method according to claim 5 , which further comprises:

detecting the respectively directly adjacent secondary stations of the selected secondary station;

transmitting a request concerning the status of the respectively directly adjacent secondary stations detected; and

receiving a respective response from the respectively directly adjacent secondary stations detected, with a response containing information about a respective status of the respectively directly adjacent secondary stations detected.

9. The method according to claim 8 , which further comprises adapting the status of the selected secondary station in dependence on the status of the respectively directly adjacent secondary stations detected.

10. The method according to claim 9 , which further comprises further adapting the status of the selected secondary station in dependence on the status of the respectively directly adjacent secondary stations detected.

11. A method for assessing an overall status of a radio-operated multi-hop hazard reporting system having a main station and a plurality of secondary stations, which comprises the steps of:

determining a value of a first parameter for a selected secondary station with the value of the first parameter being indicative of a connection security only between the selected secondary station and the main station;

determining a value of a second parameter for the selected secondary station, with the value of the second parameter being indicative for connection securities only between respective directly adjacent secondary stations of the selected secondary station and the main station;

assessing a quality of the communication connection between the selected secondary station and the main station based only on the value of the first parameter and the value of the second parameter;

assigning a status at least to the selected secondary station, with the status being a measure for a number of communication paths independent of one another between the selected secondary station and the main station;

transferring the status of the selected secondary station to the main station; and

assessing the overall status of the radio-operated multi-hop hazard reporting system based on the status transferred.

12. The method according to claim 11 , which further comprises showing a topology of the multi-hop hazard reporting system by means of a personal computer tool.

13. A selected secondary station for a radio-operated multi-hop hazard reporting system having further secondary stations and a main station, the selected secondary station comprising:

a transmit unit for transmitting information to at least one directly adjacent secondary station;

a receive unit for receiving information from the at least one directly adjacent secondary station; and

a processor which is coupled to said transmit unit and to said receive unit, said processor programmed to:

determine a value of a first parameter for the selected secondary station with the value of the first parameter being indicative of a connection security only between the selected secondary station and the main station;

determine a value of a second parameter for the selected secondary station, with the value of the second parameter being indicative for connection securities only between respective directly adjacent secondary stations of the selected secondary station and the main station; and

assess a quality of the communication connection between the selected secondary station and the main station based only on the value of the first parameter and the value of the second parameter.

14. The selected secondary station according to claim 13 , wherein at least one of said transmit unit and said receive unit only being able to be activated for predetermined periods of time.

15. A radio-operated multi-hop hazard reporting system, comprising:

a main station; and

a selected secondary station and at least one further secondary station each configured for recognizing a hazard and for reporting to said main station in an event of a detected hazard, with said selected secondary station and said at least one further secondary station being coupled via one of a direct and an indirect radio connection to said main station, said selected secondary station programmed to:

determine a value of a first parameter for the selected secondary station with the value of the first parameter being indicative of a connection security only between the selected secondary station and the main station;

determine a value of a second parameter for the selected secondary station, with a value of the second parameter being indicative for connection securities only between respective directly adjacent secondary stations of said selected secondary station and said main station; and

assess a quality of a communication connection between said selected secondary station and said main station based only on the value of the first parameter and the value of the second parameter.

16. A computer-readable storage medium having a program with executable instructions for assessing a quality of a communication connection between a selected secondary station of a plurality of secondary stations and a main station of a radio-operated multi-hop hazard reporting system, the program, when it is executed by a processor of the selected secondary station performing the steps of:

determining a value of a first parameter for the selected secondary station with the value of the first parameter being indicative of a connection security only between the selected secondary station and the main station;

determining a value of a second parameter for the selected secondary station with the value of the second parameter being indicative for connection securities only between respective directly adjacent secondary stations of the selected secondary station and the main station; and

assessing the quality of the communication connection between the selected secondary station and the main station based only on the value of the first parameter and the value of the second parameter.

17. A program element for assessing a quality of a communication connection between a selected secondary station of a plurality of secondary stations and a main station of a radio-operated multi-hop hazard reporting system, with the program element, when it is executed by a processor of the selected secondary station, performing the steps of:

determining a value of a first parameter for the selected secondary station with the value of the first parameter being indicative of a connection security only between the selected secondary station and the main station;

determining a value of a second parameter for the selected secondary station with the value of the second parameter being indicative for connection securities only between respective directly adjacent secondary stations of the selected secondary station and the main station; and

assessing the quality of the communication connection between the selected secondary station and the main station based only on the value of the first parameter and the value of the second parameter.