Publications

1. Dinev, D. and Haka, A. RSSI study of wireless Internet of Things technologies. //Journal of Physics: Conference Series, Volume 2339, International Conference on Electronics, Engineering Physics and Earth Science 2022 (EEPES 2022) 21/06/2022 - 24/06/2022 Varna, Bulgaria. https://iopscience.iop.org/article/10.1088/1742-6596/2339/1/012014
2. Haka, A., Yordanov, Y., Aleksieva, V., Valchanov, H. Study of Received Signal Strength Indicator values of Bluetooth Low Energy in Test Environment and Simulation. //International Conference AUTOMATICS AND INFORMATICS`2022, October 06 - 08, 2022, Varna, Bulgaria (ICAI'22)
3. Haka, A., Dinev, D., Aleksieva, V., Valchanov, H. A study of ZigBee Networks in Experimental Environment and Simulation. //2022 International Conference on Communications, Information, Electronic and Energy Systems (CIEES 2022) 24 – 26 November, 2022, Veliko Tarnovo, Bulgaria (Accepted)
4. Haka, A., Dinev, D., Aleksieva, V., Valchanov, H. Internet of Things Sensor Data Storing Systems for Educational Purposes. //2022 International Conference on Communications, Information, Electronic and Energy Systems (CIEES 2022) 24 – 26 November, 2022, Veliko Tarnovo, Bulgaria (Accepted)
5. Yordanov, Y. and Haka A. Bluetooth Low Energy Technology Simulators. //The Journal of CIEES - Communications, Informacion, Electronic & Energy Systems, Year 2022, Volume 2, Issue 1, July 2022, pp: 7-11, Print ISSN: 2738-7283, Online ISSN: 2738-7291, DOI: 10.48149/jciees.2022.2.1
6. Haka, A., Aleksieva, V., Valchanov, H. ZigBee Simulation Framework for Studying the Formation of a Hierarchical Tree Topology. //2021 International Conference Automatics and Informatics (ICAI), 30 September-02 October 2021, Varna, Bulgaria, pp. 257-260, Electronic ISBN:978-1-6654-2661-9, Print on Demand(PoD) ISBN:978-1-6654-2662-6, DOI: 10.1109/ICAI52893.2021.9639563.
7. Haka, A., Yordanov, Y., Aleksieva, V., Valchanov, H. Simulation Environment for Bluetooth Low Energy Network. //2021 International Conference Automatics and Informatics (ICAI), 30 September-02 October 2021, Varna, Bulgaria, pp. 287-290, Electronic ISBN:978-1-6654-2661-9, Print on Demand(PoD) ISBN:978-1-6654-2662-6, DOI: 10.1109/ICAI52893.2021.9639521.
8. Haka, A., Aleksieva, V., Valchanov, H. A Comparison Study of Decisions for Computer Network Laboratory in Distant Learning Education. //Proceedings, 2021 17-th Conference on Electrical Machines, Drives and Power Systems (ELMA), 1-4 July 2021, Sofia, Bulgaria, pp: 468-471, ISBN: 978-1-6654-3581-9, DOI: 10.1109/ELMA52514.2021.9503088
9. Haka, A., Aleksieva, V., Valchanov, H. Simulation Environment for Research of Algorithms for Traffic Prioritisation in ZigBee Network. //Proceedings, 2021 17-th Conference on Electrical Machines, Drives and Power Systems (ELMA), 1-4 July 2021, Sofia, Bulgaria, pp: 609-612, ISBN: 978-1-6654-3581-9, DOI: 10.1109/ELMA52514.2021.9503088
10. Haka, A., Dinev, D., Aleksieva, V., Valchanov, H. Comparative analysis of ZigBee, 6LoWPAN and BLE technologies for the Internet of Things. //INTERNATIONAL SCIENTIFIC CONFERENCE OF COMMUNICATIONS, INFORMATION, ELECTRONIC AND ENERGY SYSTEMS (CIEES), 25-27 November, 2021, Ruse, Bulgaria, AIP Conference Proceedings, ISBN: 978-0-7354-4375-4, Volume number: 2570, Published: Aug 18, 2022, https://doi.org/10.1063/5.0099684
11. Хъкъ, A., Йорданов, Й. СИМУЛАЦИОННА СРЕДА ЗА ВИЗУАЛИЗИРАНЕ НА BLUETOOTH LOW ENERGY ПАКЕТИ. //Компютърни науки и технологии, година XIX, брой 1, 2021, pp:6-14, ISSN 1312-3335
12. Хъкъ, A. СРАВНЕНИЕ НА СИМУЛАТОРИ ЗА 4G ТЕХНОЛОГИИТЕ - WIMAX И LTE. //Компютърни науки и технологии, година XIX, брой 1, 2021, pp:15-22, ISSN 1312-3335
13. Haka, A., Yordanov, Y. SIMULATION ENVIRONMENT FOR STUDY OF BLUETOOTH LOW ENERGY TECHNOLOGY. //Proceedings of International Scientific Conference UNITECH Gabrovo 2021, VOLUME I, 19-20 November 2021, pp: I-251-I-256, ISSN: 1313-230X
14. Haka, A., Aleksieva, V., Valchanov, H. Software Tool for Evaluation of Traffic Prioritisation Algorithms in 6LOWPAN Network. //2020 21st International Symposium on Electrical Apparatus & Technologies (SIELA), Bourgas, Bulgaria, 2020, pp. 1-4, doi: 10.1109/SIELA49118.2020.9167147.
15. Haka, A., Aleksieva, V., Valchanov, H. Comparative Analysis of Traffic Prioritisation Algorithms in 6LOWPAN Networks. //2020 21st International Symposium on Electrical Apparatus & Technologies (SIELA), Bourgas, Bulgaria, 2020, pp. 1-4, doi: 10.1109/SIELA49118.2020.9167116.
16. Haka, A., Aleksieva, V., Valchanov, H. Comparative Analysis of Traffic Prioritisation Algorithms by LTE Base Station Scheduler. //2020 21st International Symposium on Electrical Apparatus & Technologies (SIELA), Bourgas, Bulgaria, 2020, pp. 1-4, doi: 10.1109/SIELA49118.2020.9167040.
17. Haka, A., Aleksieva, V., Valchanov, H., Dinev, D. Analysis of ZigBee Network Using Simulations and Experiments //International Conference “Automatics and Informatics’2020” (ICAI'20), 01-03 October 2020, Varna, Bulgaria, pp. 1-4, Electronic ISBN:978-1-7281-9308-3, Print on Demand(PoD) ISBN:978-1-7281-9309-0, DOI: 10.1109/ICAI50593.2020.9311328.
18. Haka, A., Aleksieva, V., Valchanov, H. Enhanced Simulation Framework for Visualisation of IEEE 802.15.4 Frame Structure on Beacon Enabled Mode of ZigBee Sensor Network. //2020 International Conference on Biomedical Innovations and Applications (BIA), 24-27 September, 2020, Varna, Bulgaria, Electronic ISBN:978-1-7281-7073-2, pp. 109-112, Print on Demand(PoD) ISBN:978-1-7281-7074-9, DOI: 10.1109/BIA50171.2020.9244507 https://ieeexplore.ieee.org/document/9244507
19. Haka, A., Aleksieva, V., Valchanov, H. 6LoWPAN Network Analysis Using Simulations and Experiments. //IOP Conference Series: Materials Science and Engineering, Volume 1032, INTERNATIONAL SCIENTIFIC CONFERENCE OF COMMUNICATIONS, INFORMATION, ELECTRONIC AND ENERGY SYSTEMS (CIEES), 26-29 November 2020, Online ISSN: 1757-899X, Print ISSN: 1757-8981, https://iopscience.iop.org/article/10.1088/1757-899X/1032/1/012015
20. Haka, A., Aleksieva, V., Valchanov, H. Deployment and Analysis of Bluetooth Low Energy Network. //IOP Conference Series: Materials Science and Engineering, Volume 1032, INTERNATIONAL SCIENTIFIC CONFERENCE OF COMMUNICATIONS, INFORMATION, ELECTRONIC AND ENERGY SYSTEMS (CIEES), 26-29 November 2020, Online ISSN: 1757-899X, Print ISSN: 1757-8981, https://doi.org/10.1088/1757-899X/1032/1/012016
21. Haka, A. Research of wireless technologies for Internet of Things (IoT) networks. //COMPUTER SCIENCE AND TECHNOLOGIES, Year XVIII, Number 1, 2020, pp:51-58, ISSN 1312-3335
22. Haka, A. STUDY OF UPLOAD AND DOWNLOAD TRAFFIC ON A 6LOWPAN WIRELESS SENSOR NETWORK FOR INTERNET OF THINGS (IOT). //Proceedings of International Scientific Conference UNITECH Gabrovo 2020, 20-21 November 2020
23. Haka, A. COMPREHENSIVE EVALUATION OF ZIGBEE WIRELESS SENSOR NETWORK SIMULATORS FOR PURPOSES OF EDUCATION. //Proceedings of International Scientific Conference UNITECH Gabrovo 2020, 20-21 November 2020
24. Haka, A., Aleksieva, V., Valchanov, H. Camparative Evaluation of Mechanisms for Traffic Prioritization in LTE Networks. //Proceedings, 2019 16-th Conference on Electrical Machines, Drives and Power Systems (ELMA), 6-8 June 2019, Varna, Bulgaria, pp: 406-410, ISBN: 978-1-7281-1412-5, IEEE Catalog number: CFP19L07-USB, https://www.scopus.com/authid/detail.uri?authorId=57196043216
25. Haka, A., Vasilev, R., Aleksieva, V., Valchanov, H. Simulation Framework for Building of 6LoWPAN Network. //Proceedings, 2019 16-th Conference on Electrical Machines, Drives and Power Systems (ELMA), 6-8 June 2019, Varna, Bulgaria, pp: 522-526, ISBN: 978-1-7281-1412-5, IEEE Catalog number: CFP19L07-USB, https://www.scopus.com/authid/detail.uri?authorId=57196043216
26. Vasilev, R., Haka, A. Enhanced Simulation Framework for Realisation of Mobility in 6LoWPAN Wireless Sensor Networks. //Proceedings, 28th International Scientific Conference Electronics, ET 2019, 12-14 Sept. 2019, Sozopol, Bulgaria, Electronic ISBN: 978-1-7281-2574-9, Print on Demand(PoD) ISBN: 978-1-7281-2575-6, DOI: 10.1109/ET.2019.8878669, https://www.scopus.com/authid/detail.uri?authorId=57196043216
27. Haka, A. Comparative Evaluation of LTE Simulators for Purposes of Education. //Proceedings of International Scientific Conference UNITECH Gabrovo 2019, Volume II, 15-16 November 2019, pp: II-1 - II-6, ISSN: 1313-230X
28. Haka, A. Study of 6LoWPAN Wireless Sensor Network Simulators for Purposes of Education. //Proceedings of International Scientific Conference UNITECH Gabrovo 2019, Volume II, 15-16 November 2019, pp: II-22 - II-27, ISSN: 1313-230X
29. Хъкъ, А., Василев, Р. СИСТЕМА ЗА СИМУЛИРАНЕ НА МЕХАНИЗМА НА ИЗГРАЖДАНЕ НА НАЙ-ПРЕДПОЧИТАНИЯ ПЪТ ПРИ 6LOWPAN ТЕХНОЛОГИЯ. //Компютърни науки и технологии, ТУ-Варна, 2018, Брой 1, стр. 17 - 23, ISSN 1312-3335
30. Хъкъ, А. СРАВНИТЕЛЕН АНАЛИЗ НА МЕХАНИЗМИ ЗА ПРИОРИТИЗАЦИЯ В LTE SCHEDULER. //Компютърни науки и технологии, ТУ-Варна, 2018, Брой 1, стр. 24 - 31, ISSN 1312-3335
31. Haka, Aydan. Simulation Franawork for Realization of Handover in LTE Network in Urban Area. //Proceedings of the 1st International Conference "Applied Computer Teachnologies" ACT 2018. Ohrid, Macedonia, 21-23 June 2018, pp: 122-126, ISBN 978-608-66225-0-3
32. Haka A., Modified Simulation Framework for Realization of Horizontal Handover in LTE Cellular Networks. //53rd International Scientific Conference on Information, Communication and Energy Systems and Technologies (ICEST 2018) Proceedings of Papers, Sozopol, Bulgaria, June 28-30, 2018, Issue: 1, ISSN 2603-3259, pp. 158-161, ISSN Online: 2603-3267