Modeling and fitting of the holding time distribution using multi-exponential distributions | |
| Author | Khin Sandi Lynn |
| Call Number | AIT RSPR no.ICT-08-05 |
| Subject(s) | General packet radio service Communication and traffic Radio packet transmission |
| Note | Submitted in partial fulfillment of the requirements for the degree of Master of Engineering in Information and Communications Technologies, School of Engineering and Technology |
| Publisher | Asian Institute of Technology |
| Series Statement | Research studies project report ; no. ICT-08-05 |
| Abstract | For network planning and operation purposes it is very important to know the call holding times. In this research study, the holding time of mobile, PSTN, VoIP, internet and international calls are studied. For the international calls, both outgoing and incoming calls are studied. The holding time distribution is fitted by using exponential distribution, mixture of exponential distributions and the convolution with the mixture of exponential distributions. It is observed that holding time distribution consists of short calls, medium calls and long calls and it cannot be expressed by one exponential distribution. The mixture of exponential distribution can improve the assumption of the holding time distribution model. The convolution of a short initial handshaking part of a call with the mixture of exponential distributions can give the better fitting of holding time distribution. Mean fitting and both mean and standard deviation fitting methods are studied. One exponential distribution model can use only mean fitting. For multi-exponential distributions model, both mean and standard deviation fitting can be used. It is found that nearly 70% of the total calls are short calls, about 20% are medium calls, around 10% are long calls and very long calls are less than 10%. For the internet calls, the proportion of long calls is much higher than that found in other type of calls |
| Year | 2008 |
| Corresponding Series Added Entry | Asian Institute of Technology. Research studies project report ; no. ICT-08-05 |
| Type | Research Study Project Report (RSPR) |
| School | School of Engineering and Technology (SET) |
| Department | Department of Information and Communications Technologies (DICT) |
| Academic Program/FoS | Information and Communication Technology (ICT) |
| Chairperson(s) | Erke, Tapio J.; |
| Examination Committee(s) | Ahmed, Kazi Mohiuddin;Rajatheva, R. M. A. P.; |
| Scholarship Donor(s) | Asian Institute of Technology Fellowship;France; |
| Degree | Research Studies Project Report (M. Eng.) - Asian Institute of Technology, 2008 |