It is the best way to obtain the dataset through simulation. But it is difficult to simulation. The first step, you should know the exact details of protocols and PHY features in your IoT devices. The second step is to develop the simulation system based on a simulation tool, for example, NS2, OMNET, OPNET. This step is the most difficult. The third step is to get the simulation result through your simulation system of step 2nd. 

You can check a similar question here: https://www.researchgate.net/post/Does_anyone_know_public_open_large_datasets_with_data_collected_from_IoT_objects_that_I_can_use_in_academic_research

first, you have to define, what kind of QoS you need. QoS is a generic term and means different things for different applications. QoS for uploading a file every so often, is very different than real-time video, or interactive video. you need to know what you are looking for

I'm currently testing SimpleIoTSimulator (http://www.smplsft.com/SimpleIoTSimulator.html)

try to simulate ur QoS through any simulation such as Matlab then save the values in dataset or pass them to IOT application such as thingspeak. Thingspeak has capable to integrate with matlab tools so these QoS values willl be passed to thingspeak to be displayed as graph for a period of time

I think QoS is a Network measurement units in terms of performance evaluation (such as throughput, delay, jitters , loss, RTT ..). They are quantitative measures (behavior) for network traffic based on available resources such as bandwidth.

Data sets may not related directly to devices of IoT but may points correlations between certain cases in a certain investigation field such as character types (handi or printed) in character recognition field,  finger prints types for different people in pattern recognition, malicious emails in phishing, viruses signatures in IDS system etc..

So, data set should be specific per research domain while IoT device are too general topic and need to be identified.

Regards    

it depends to the type of application which used it. for example the throughput of the voice depends in the voice codec that used it. 

Thanks Ahmed. I mean by throughput: the number of requests per second for example, the response time: the time taken to handle a request and so on. 

And also I didn't get it 

Mainly for most works you have to build your own simulator and determining  the terms of evaluation depend basically on the application or algorithm

Hi Dalia Sobhy I have made some QoS data for IoT devices over time available at https://www.scss.tcd.ie/~whiteg5/

Thank you very much all for valuable provided QoS datasets.

Dear Dalia Sobhy ,

you can find it here: https://github.com/thieunguyen5991/iot_dataset