Cell load based user association for professional mobile radio systems

10th International Conference on Electrical and Electronics Engineering, ELECO 2017; Bursa; Turkey; 29 November 2017 through 2 December 2017When the public communication networks can not provide service during disaster and high traffic cases, Professional Mobile Radio systems (PMR) such as trunked Digital Mobile Radio (DMR) systems are needed to improve the service quality and to provide uninterrupted service to the public safety officers. While providing continuous voice and data service, it is very important to select the base station (BS) to be served by efficient cell selection algorithms. The aim of the user association algorithms is to reduce the waiting time while establishing reliable transmission link for PMR systems in emergencies. In this sense, we propose the full set user association algorithm that each user selects the BS according to the calculated utility value determined based on both received signal strength indicator (RSSI) value and cell load information. The performance of the proposed algorithm is evaluated by considering different performance metrics for trunked DMR systems in urban area.Republic of Turkey Ministry of Science, Industry and Technology under SAN-TEZ 0686.STZ.2014 Programm

Performance of cell selection algorithms for APCO25

24th Signal Processing and Communication Application Conference, SIU 2016; Zonguldak; Turkey; 16 May 2016 through 19 May 2016Bu makalede, APCO25 telsiz sistemi için hücre seçim algoritmaları incelenmiştir. Hem baz istasyonlarının yükü hem de kullanıcıların sinyal karışım gürültü oranları göz önüne alınarak hücre seçimi gerçekleştirilmiştir. Benzetim sonuçları, data ve ses kullanıcılarının olduğu farklı senaryolar göz önüne alınarak elde edilmiştir. Önerilen hücre seçim algoritmasının, kullanıcılara daha iyi sinyal karışım gürültü oranı değerleri sağlarken kullanıcıların baz istasyonlarına dengeli bir şekilde atamasını da yaptığı gösterilmiştir