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With the advent of the era of big data, O2O as a new industry of making an integration of online and offline effectively, attracts more and more people to start to talk about this topic. In this article, after exploring the past academic research for two years, it is considered to select the local service industry and study the problem of the O2O industry, such as “Meituan.com”.
This paper introduces the architecture design of Beijing digital school system which describes specific functions and modules of five layers, i.e. the interface layer, the application layer, the support layer, the data layer and the base layer. Beijing digital school system contains mobile digital school and web digital school. The article presents the architecture design of the mobile platform and...
Next-generation [fifth-generation (5G)] mobile systems are broadening their spectrum to higher-frequency bands (above 6 GHz) to support a high data rate up to multigigabits per second. In this article, we have two main contributions to higher-frequency communications. First, we summarize the candidate frequency bands that are promising for 5G research, including licensed and unlicensed frequency bands...
This paper chose the WM-G-MR-09 chip, designed and implemented WiFi communication module, set up a real mobile network environment base on Windows CE operating system platforms and IEEE 802.11b wireless network interface. Achieved AODV (Ad-Hoc on-demand Distance Vector) routing algorithm module by calling the API in an adding routing function module. The validation and testing for the algorithm module...
Based on studying the characteristics of topology and business model of wireless mesh networks, depth analysis of the suitable routing protocol type for WMN was given out which shows that proactive hop-by-hop routing is most suitable for WMN. On the basis of Optimized Link State Routing which is a typical proactive hop-by-hop routing protocol. A routing protocol P-OLSR of perceptive 1inks is proposed...
This paper describes a video quality analysis system for inservice monitoring of streamed videos, particularly over mobile/wireless networks. The algorithm adopts the no-reference method, and enables real-time measurement of video quality at any point in the content production and delivery chain using any given video. The technologies developed include no-reference methods for measuring picture freeze,...
The IEEE 802.16e standard (i.e., mobile WiMAX) has been proposed to provide connectivity in wireless networks for mobile users (including users at a vehicular speed). It is shown in our analysis that the probability of a successful handover decreases significantly when the user moves at a higher speed. Then, we propose a scheme that combines adaptive forward error correction (FEC) with retransmission...
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