ON EVALUATION OF DIFFERENT SERVICES ON MAN-E NETWORK BY BAC NINH DIVISION: A CASE STUDY

Abstract

The paper with the above entitled consists of two main parts, A and B. In the previous article "NGN of Vietnamese Posts and Telecommunication" (NGN of VNPT), different results are reported w.r.t developing NGN of VNPT on the basis of existent telecommunication network of VNPT by a suitable change from classically electronic switch with Time Division Multiplexer (TDM) to the Internet Protocol Packed Electronic Switch (MPLS/IP) in two steps. In the first paragraph of part A, different principles and criteria were reported for developing NGN w.r.t conditions of VNPT so that (i). Existed network and the next one are simultaneously working together and (ii). NGN is to be opened for carrying out different further developments. All these require different stepwise methods of changing from basically TDM to MPLS/IP for readily moving from wide area network (MAN) to MAN-E. Second paragraph of the article was for different proposals in details w.r.t the second step of developing the NGN of VNPT. The last paragraph was for conclusions and directions for dealing with shortcoming ofMAN by MAN-E which would be the issues in the coming article (part B). This paper, part B, consists of 4 paragraphs. In the first paragraph, a brief on differentshortcoming of MAN in NGN, a introduction in brief on the roles of a modern MAN known as MAN-E to overcome the mentioned shortcoming of MAN the in NGN are addressed. The second one is for the introduction of Bac Ninh's MAN-E network on general structure, on specified data also at the whole located nodes (bandwidths, ring loops, users, etc.). The third one is for reporting on the estimation of different known MAN-E services, i.e. point to point (E-LINE), multipoint to multipoint (E-LAN) and point to multipoint (E-TREE) services. For each service, a diagram scheme for collecting data, stepwise measurement procedure are established and two plots w.r.t the packet loss and maximum latency vs. frame size are obtained. From the experimental data, the most important conclusions drawn are: (i). All trailed servicesare satisfied the renuirements of technical specifications on both, packet loss and maximum latency; (ii). With the frame size smaller than 2000 bytes, MAN-E can provide a larger number of services than that of MAN from the packet loss point of view; (iii). However, the (ii) conclusion is not happened to be from the maximum latency view point which demands for further investigations including some different criteria to be set up w.r.t the ITU recommendations for MAN services. The fourth part of the article is for different remarks and conclusions w.r.t the development of NGN of VNPT in the trend of technology transferring from aligned 3C fields (communication, computation. Control) to integration of those in C3+.