Yang Yuhang

Bio: Yang Yuhang is an academic researcher from Shanghai Jiao Tong University. The author has contributed to research in topics: Radio access network & Quality of service. The author has an hindex of 2, co-authored 8 publications receiving 116 citations.

A new 4G architecture providing multimode terminals always best connected services

Abstract: In recent years, wireless communication technology has undergone a tremendous change. Various radio access technologies have been deployed all over the world. The 4G mobile system was proposed to integrate all of these radio access technologies into a common network called the open wireless architecture (OWA) platform. As one of the main features of a 4G mobile system, always best connected (ABC) services enable users to choose the best available access networks in a way that best suits their needs. A new architecture capable of supporting ABC service is proposed in this study. There are three parts to the proposed architecture. First, a novel access discovery mechanism that integrates service location protocol and location-based service is presented. Second, a new personalized network selection scheme is put forward. Users can select their personalized "best" network by changing weight factors and constraints in a single objective optimization problem. Third, a seamless handover mechanism based on Mobile IPv6 is proposed. The mechanism supports end-to-end quality of service. Through analysis, this architecture demonstrates that it has benefits not only for network operators, but also for users

Performance analysis of sleep mode operation in IEEE802.16e

Abstract: The IEEE80216e is a standard of emerging broadband wireless access system which supports the mobilityThe mobile subscribers(MSS) are mainly powered by the batteries,so the sleep mode mechanism becomes an important component for the MSS which can effectively manage the limited energy,and prolong the using time of the once-charged batteriesThis paper introduced the standardized sleep mode in IEEE80216e,then it analyzed the average energy consumption and the average packet delay under sleep mode by building a semi-Markov chain,and gave the simulation results by NS2 at last

Transformation from XML schema to UML class diagram based on meta model

Abstract: This paper defines meta model of XML schema associate to transformation based on XML Schema document and XMI specification,and constructs the mapping relation between it and UML meta modelBased on this,it proposes the transformation rules based on XMI and OCL,and analyzes the transformation spaceIt also illustrates the transformation with example

Design and Implementation of an Embedded Network Development Platform

Abstract: This paper starts with the basic component of general embedded system, then analyzes the design method of an embedded network development platform, and also gives the implementation of such a system that is based on x86 CPU and Linux

Analysis on Performance of IEEE 802.11e Contention-based Channel Access Schemes

Abstract: This paper presents an overview of the legacy 802.11,describes and discusses the enhanced contention-based medium access schemes of the upcoming new standard IEEE 802.11e and its capability to provide QoS support.

Always Best Connected

Abstract: This chapter contains sections titled: Product Definition for Broadband Wireless Systems Technology Drivers Evolving Wireless Broadband Market Segments Open Systems and Intelligence at the Edge Radio Network System Engineering References

The Future of Mobile Wireless Communication Networks

Abstract: The future of mobile wireless communication networks will be experienced several generations as which have been experienced. This kind of development will drive the researches of information technology in industrial area. In this paper, we predict the future generations of mobile wireless communication networks including 4th, 5th, 6th and 7th generations. The main objective of this paper is to propose a technical frame for industry in the future. Thus, this paper is focused on the specification of future generations of wireless mobile communication networks.

Energy efficiency in heterogeneous wireless access networks

Abstract: In this article, we bring forward the important aspect of energy savings in wireless access networks. We specifically focus on the energy saving opportunities in the recently evolving heterogeneous networks (HetNets), both Single- RAT and Multi-RAT. Issues such as sleep/wakeup cycles and interference management are discussed for co-channel Single-RAT HetNets. In addition to that, a simulation based study for LTE macro-femto HetNets is presented, indicating the need for dynamic energy efficient resource management schemes. Multi-RAT HetNets also come with challenges such as network integration, combined resource management and network selection. Along with a discussion on these challenges, we also investigate the performance of the conventional WLAN-first network selection mechanism in terms of energy efficiency (EE) and suggest that EE can be improved by the application of intelligent call admission control policies.

5G Wireless Communication Systems

Abstract: As a subscriber becomes more aware of the mobile phone technology, he/she will seek for an appropriate package all together, including all the advanced features of a cellular phone can have. Hence, the search for new technology is always the main intention of the prime cell phone giants to out innovate their competitors. In addition, the main purpose of the fifth generation wireless networks (5G Wireless networks) is planned to design the best wireless world that is free from limitations and hindrance of the previous generations. 5G technologies will change the way most high bandwidth users access their Mobile Radio Communication (MRC). So, this paper represents, great evolution of 1G (First Generation) to 4G yield 5G, introduction to 5G technologies, why there is a need for 5G, advantages of 5G networks technology, exceptional applications, Quality of Service (QoS), 5G network architecture-The MasterCore as well as hardware and software for the 5G MasterCore technology.