Internet has become more and more popular with the progress of information technology. With the increasing number of Internet users, a large number of various types of web sites on-line, a significant increase in daily or updated web pages, and many social networks which are similar to reality are emerging gradually in the Internet. In
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In recent decades, the development speed of Near Field WPAN Communication technology with high-speed is very compelling, but different Organization for Standardization develop different wireless access techniques, which can be applied to different network environment and cannot be replaced by each other. None of these techniques can easily cope with the problem of Near Field
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At present, with the maturity of 3G network deployment and commercialism, the communication industry focus has shifted to the standard formulation and industrial deployment of the fourth generation mobile communication system LTE-Advanced. LTE-Advanced has greater communication potential than IMT-2000 system to support more than 1Gbit/s peak rate and 100MHz bandwidth. LTE-Advanced bases on OFDM technology,
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In order to meet the challenges of WiMAX, and fulfill the requirements of higher speed data rate services, LTE begins a further evolution of LTE-Advanced. With the increasing demands of high-speed data services and system capacity in the future mobile communication systems, LTE-Advanced system, as a candidate technology for the next generation mobile communication systems,
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Heterogeneous network (HetNet) deployment is investigated by 3GPP LTE-A as a promising paradigm for further enhancing network performance. The main idea of HetNet is to overlay low-power low-cost stations on the coverage holes and hotspot areas to complement the conventional macrocell for coverage extension and capacity enhancement. Self-organizing network (SON), which aims at enhancing network
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Object tracking is hot topic of computer vision, has a profound theory value and broad application prospect. Heterogeneous camera network composed of PTZ cameras and omni-camera can realize coverage of large scale area and capturing object detail images, and is widely applied in video surveillance and object tracking.This thesis focuses on heterogeneous camera network composed
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With the emergence of multiple wireless communication access technologies and the enlargement of the scale of multi-device users, heterogeneous network convergence has been the development trend of communication technologies. And the vertical handover between multiple terminals and Joint Call Admission Control (JCAC) under heterogeneous network environment has become a research hotspot within communication sector.Based on
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The development of the next generation network is moving towards the dierection of diversification and all-IP. As the growing number of access technologies and network services, the end-to-end Quality of Service guarantee in heterogeneous networks is becoming one of the key technologies of the next generation mobile communication system.The background framework of this research framework,
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In 3 GPP Long Term Evolution (LTE) systems, as frequency reuse factor of one is approved, the inter-cell interference (ICI) is severe. In order to mitigate ICI, coordinated multiple-point transmission and reception (CoMP) has been adopted in 3GPP LTE-Advanced systems. This dissertation analyzes the challenges to conventional radio air interface when CoMP is introduced. Moreover,
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With the progress of wireless communication network technology and the rise of multimediaservices, mobile communication has become one of the most active and most rapidlydevelopment technologies in the communication areas. And it also has a significant effect onhuman life and social development in the21st century. The traditional wireless network systemcan not meet the customers’ demand
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