Research Of Speech Quality Evaluation In Core Network Of China Mobile Group Shenzhen Co.Ltd

In recent years, almost all the mobile telecom operators are concerned about the User Perception, especially about voice service. User Perception is mainly evaluated by continuation and communication service. The process of continuation involves playing the announcement tone correctly and afterward avoiding problems, such as one-way call phenomenon and low voice quality; these technical problems make it difficult to enhance the User Perception. This study begins with the analysis of voice equipment that influences User Perception, and through the analysis of various voice evaluation methods and the voice evaluation equipment developed by PESQ, finds out a new way of voice evaluation.This essay first thoroughly studies the influence of the voice equipment of Ericsson's switching products on voice quality, and next analyzes the current voice evaluation methods, focusing on PESQ, the effective way of analysis and calculation of voice evaluation. Based on this, I am going to design a set of voice quality evaluation equipment, and finally, analyze the effectiveness of applying this equipment to Shenzeng mobile network. Though this essay explores the proper voice test equipment for Ericsson's equipment in Shenzeng mobile core network, this concept can be commonly applied to different platforms for network equipment.In this paper, a detailed study of Voice notification equipment and TRA equipment of ERICSSON which is widely used in core network in mobile communication,the failure of two equipment have the impact on voice quality. And then,followed a detailed analysis on a variety of current methods of voice assessment, focusing on Analysis of the PESQ evaluation of this well-established in the voice analysis algorithms. On this basis, we design a set of voice quality assessment equipment, including its hardware and software detailed design; we also set up a efficient the environment for detecting the voice quality,which is used to detect the current equipment in core network.At last,we analyze the effect of this system which emploied in mobile network of Shenzhen.All through this paper,we discuss the detection of Voice quality and explore the most effective way to evaluate the user perception and voice quality assessment . We achieve the detection algorithm by realizing software and hardware equipment. By means of an effective way of voice quality assessment system , we increase the efficiency of the project construction and network maintainace , at the same time,we enhance the quality of the network and the user perception by detecting the Voice notification equipment and TRA equipment. The theory has a strong research value and marketing value. In this paper the the Voice notification equipment and TRA equipment in Shenzhen mobile core network are from Ericsson, but its universal applicability of the principle can be achieved in different device platforms.