By Optical Network Planning And Optimization System Based On Regional Business Distribution And Protection Issues

Nowadays both opportunities and challenges exist in Chinese communication market. With the reform and restructuring of telecom industry, the competition is getting more intense between the telecom service providers. As the most important aspect of service, transmission network performance presents core competition of operators. The practical software of transmission network planning and optimizing can greatly help operators increase the efficiency of network performance as well as decrease the cost of network operating. However, network planning and optimizing software product can not meet the demands of the present market. With fast growing of network bandwidth needs and rapidly developed communication technologies, telecom service providers pressingly need some practical tool for transmission network planning and optimization.This project is software (named UnitransZXTOP) development of optical network planning and optimization, which is practical tool in the use of transmission network planning. The implement of software is based on the research of related technologies of optical network (SDH/WDM). This paper is focus on the module of traffic demand routing and protection.The algorithms for practical application will give more consideration on the fields which the theoretical research on the optical network field less concerned. This papaer illustrates these problem then resolves them. The simulation results prove the utility and efficiency of these algorithms. These solutions include: (1) proposing the region partition strategy (ERPN) for the large network and realizing this algorithm in the software; (2) proposing one routing algorithm(PRR) based on Dijkstra for the across region demands and the simulation result indicate it reduces the time complexity of Dijkstra in massive network; (3)implement of routing algorithm for multi-granularity demands in optical network(SDH/WDM); (4)specific to network survivability research then proposing cross-region P-Cycle construction and configuration algorithm, which is more matched the actual large scale network.Based on the achievement introduced in the previous chapter, this paper then states the system architecture of UnitransZXTOP and the details of design and implement in the module of traffic demands assignment and protection (TAPR). Including elaboration of data structures and program flowcharts, which correspond with the solutions stated in the previous chapters.In conclusion this paper exhibits the interface of UnitransZXTOP. A situational case of massive network planning and optimization verifies the validity and practicality of TAPR module and the whole system.