Transition from PSTN to next generation network (NGN) : case study in Ho Chi Minh City, Vietnam | |
| Author | Nguyen Van Hoa |
| Call Number | AIT RSPR no. TC-03-24 |
| Subject(s) | Telecommunication -- Vietnam -- Traffic Telecommunication -- Vietnam -- Switching systems |
| Note | A research study submitted in partial fulfillment of the requirements for the degree of Master of Engineering, School of Advanced Technologies |
| Publisher | Asian Institute of Technology |
| Series Statement | Research studies project report ; no. TC-03-24 |
| Abstract | A transition is expected to take place from service-specific traditional networks to a Next Generation Network (NGN). In NGN, multiple services are offered and packet network transport is used for all services with an appropriate Quality of Service (QoS) for each. In Ho Chi Minh City (HCMC), with the growing popularity of the Internet, increasing number of users access Internet through Public Switched Telephone Network (PSTN). Internet calls going through PSTN do not only obtain low bit rate but also cause the increase of traffic in PSTN. Therefore, transition from PSTN to NGN is necessary in HCMC to meet the future demand of customers. This research study proposes a solution for transition from PSTN to NGN in HCMC. The first step of this solution is based on investigating current network to know the current state of network. The demand forecast for subscribers is based on number of connected subscribers, estimated annual growth rate of GDP, and annual growth rate of population. The estimation of traffic demand is based on traffic measurement in the second step, and data collected from traffic measurement is foundation to the transition plan from PSTN to NGN. The third step is to analyze and compare IP, ATM, and MPLS to propose suitable technology for NGN in HCMC. The final step is a method to migrate from PSTN to NGN, this migration is performed based on the result of step 1, step 2, and step 3. The result of case study shows that IP is suitable technology for initial NGN in HCMC, and the network should be upgraded to MPLS in further future. The result of demand forecast for subscribers and traffic measurement showed that annual growth rate of subscribers per year is 10%, mean holding time on route of Internet calls is approximately 20 min, and mean duration of voice calls is 1 OOs. Total Internet and voice calls in busiest 15 min period were about 5000 and 200000 respectively. Finally, the result of traffic analysis and calculation showed that capacity of IP backbone for transferring all voice and traffic from PSTN to NGN are 1.5 Gbit/s and 672 Mbit/s respectively, and the number of access nodes that should be invested in the end of transition from PSTN to NGN is 384 consisting of 40 (AN+) for Business area, 307 (AN) for residential area, and 37 (AN-) for rural area. |
| Year | 2003 |
| Corresponding Series Added Entry | Asian Institute of Technology. Research studies project report ; no. TC-03-24 |
| Type | Research Study Project Report (RSPR) |
| School | School of Advanced Technologies (SAT) |
| Department | Department of Information and Communications Technologies (DICT) |
| Academic Program/FoS | Telecommunications (TC) |
| Chairperson(s) | Erke, Tapio J.; |
| Examination Committee(s) | Ahmed, Kazi M. ;Teerapat Sanguankotchakorn; |
| Scholarship Donor(s) | Ho Chi Minh Post and Telecommunication; |
| Degree | Research Studies Project Report (M. Eng.) - Asian Institute of Technology, 2003 |