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In recent years, there has been great interest from the cellular service providers to use the unlicensed spectrum for their service offerings. On the other hand, existing unlicensed users in these bands (e.g., Wi-Fi in the 5-GHz band) have serious concern that such coexistence will jeopardize their service quality. Although there are some proposals on how to achieve coexistence, they are driven by...
In order to realize the fusion of coal mine voice network, data network and video monitoring network, to improve reliability, flexibility and expansibility of safety production and management, the paper analyses the system structure of the softswitch, and researching and designing based multi-service based on softswitch of coal mine. The model of multi-service platform based on softwitch in coal mine...
In order to transmit the coal mine multi-service in the unified platform, the status and development of the coal mine multi-service system for monitoring are researched. According to the different service requirements in coal mine, the model of the coal mine multi-service based on soft-switch is proposed; the Architecture of the coal mine multi-service based on soft-switch is designed. In the platform,...
In order to solve the data integrity, non-repudiation, confidentiality and operation inefficiency of the mobile e-commerce, in this paper, mobile e-commerce security model is established. The design is based on mobile e-commerce architecture, analyzing the digital signature authentication process and data security transmission procedure in the system. Delamination modularized software design method...
In order to satisfy exploding demands of information storage, many scheduling models of distributed storage system are researched. The reasons are that the traditional models disclose too many limits and weaknesses, such as the bottleneck and breakpoint problems of centralized models, and the communication overhead problems of distributed models.
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