Method and apparatus for providing acknowledgement indicators in a wireless communication network

1. A resource restricted user-operated device providing control commands over a wireless acknowledgement-based communication network to a destination device upon actuation by a user wherein the resource restricted user-operated device receives user input to trigger a user-perceivable reaction of the user-operated device or a system controlled by it, the resource restricted user-operated device comprising:

a detector configured to detect an actuation pattern of the user-operated device upon actuation of a user;

a processing unit, wherein the processing unit is configured to:

compare the detected actuation pattern with a predetermined pattern;

generate an acknowledgement indicator for transmission to the wireless acknowledgement-based communication network indicative of a successful or unsuccessful transmission of a previously sent control command to the destination device in dependence of a comparison result of the actuation pattern with the predetermined pattern; and

wherein the detector comprises a capacitor adapted to store energy harvested during actuation of the user-operated device by a user and to discharge at a predetermined rate; wherein the detector is further adapted to determine a residual charge in the capacitor upon actuation by a user; and wherein the processing unit is further configured to generate the acknowledgement indicator in dependence of a value of the residual charge.

2. The resource restricted user-operated device according to claim 1 , wherein the predetermined pattern represents an atypical user interaction and wherein the processing unit is adapted to trigger a maintenance action to recover from communication failures if the actuation pattern matches the predetermined pattern.

3. The resource restricted user-operated device according to claim 1 , wherein the predetermined pattern represents a typical user interaction and wherein the processing unit is adapted to trigger a maintenance action to recover from communication failures if the actuation pattern does not match the predetermined pattern.

4. The resource restricted user-operated device according to claim 1 , wherein the processing unit is further configured to detect a misuse of the user-operated device in dependence of a comparison result of the actuation pattern with the predetermined pattern.

5. A method performed by a resource restricted user-operated device providing control commands over a wireless acknowledgement-based communication network to a destination device upon actuation by a user, the method comprising:

detecting an actuation pattern of a user-operated device upon actuation of a user;

comparing the detected actuation pattern with a predetermined pattern;

generating an acknowledgement indicator for transmission to the wireless acknowledgement-based communication network indicative of a successful or unsuccessful transmission of a previously sent control command to the destination device in dependence of a comparison result of the actuation pattern with the predetermined pattern;

wherein the detector step comprises stores energy harvested during actuation of the user-operated device by a user and to discharge at a predetermined rate and determines a residual charge in the capacitor upon actuation by a user; and

generating the acknowledgement indicator in dependence of a value of the residual charge.

6. The method according to claim 5 , wherein the predetermined pattern represents an atypical user interaction and wherein generating an acknowledgement indicator comprises triggering a maintenance action to recover from communication failures if the actuation pattern matches the predetermined pattern.

7. The method according to claim 5 , wherein the predetermined pattern represents a typical user interaction and wherein generating an acknowledgement indicator comprises triggering a maintenance action to recover from communication failures if the actuation pattern does not match the predetermined pattern.

8. A computer- readable, non-transitory medium having stored therein instructions for causing a processing unit to execute a method performed by a resource restricted user-operated device providing control commands over a wireless acknowledgement-based communication network to a destination device upon actuation by a user, the medium comprising code for:

detecting an actuation pattern of a user-operated device upon actuation of a user;

comparing the detected actuation pattern with a predetermined pattern;

generating an acknowledgement indicator for transmission to the wireless acknowledgement-based communication network indicative of a successful or unsuccessful transmission of a previously sent control command to the destination device in dependence of a comparison result of the actuation pattern with the predetermined pattern;

wherein the detector step comprises stores energy harvested during actuation of the user-operated device by a user and to discharge at a predetermined rate and determines a residual charge in the capacitor upon actuation by a user; and

generating the acknowledgement indicator in dependence of a value of the residual charge claim 1 .