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The IEEE Communications Society Harbin Chapter, PRC, was founded on 24 February, 2012. It has already been two years since approval. In the past year we have held many activities to make our community life much more colorful and acquire something that cannot be learned outside the activities at the same time. The activities are presented as follows. [ABSTRACT FROM AUTHOR]

The article provides information on the activities and achievements of the 2007 IEEE Wireless Communications and Networking Conference (WCNC) held from March 11 to 15, 2007 in Hong Kong, China. The theme of the conference was Wireless Gateway, given Hong Kong's special position within the fast growing vibrant economies and excitement of China and Asia. Hong Kong is well known for its advances in information and communications technology. Furthermore, WCNC 2007 was a resounding success. It broke every record there was to be broken. It had an overwhelming number of paper submissions, truly exceeding all expectations.

A novel approach is proposed to predict the coverage of urban and suburban cells in wireless networks. By this approach, the propagation loss between any two points along the virtual propagation path from the base-station to the mobile-station within a predicted area can be deduced in an average sense with reasonable accuracy, based on an a priori series of measurements, finite and limited in extent, taken along the periphery of this area. The effectiveness of the proposed method has been demonstrated using experiments under various radio environments in Guang Dong, China. It was shown that the prediction results were approximately consistent with independent checking samples [ABSTRACT FROM PUBLISHER]

The article offers information on various activities organized by Beijing, China Chapter of Institute of Electrical and Electronic Engineers Inc. (IEEE) Communication Society (ComSoc) since March 2009. IEEE ComSoc organized IEEE Distinguished Lecture Tours (DLTs), summer schools, and short courses which cover topics on communication system. It provides an overview of various events which include a crash course on cooperative wireless networks on October 22, 2009 hosted by doctor Mischa Dohler.

The article focuses on recent developments in China's emerging wireless mobile communications networks, as well as perspectives on China's future wireless mobile technology and market, with an emphasis on research, development, deployment, application and business issues. To evaluate the emerging new technologies for future mobile communications, a B3G-oriented research project called Future Technologies for Universal Radio Environment (FuTURE) is being carried out in China. The article "Toward Beyond 3G: The FuTURE Project in China," provides an overview of the FuTURE system. This article discusses the application requirements, technology challenges, and some potential solutions of B3G systems. It is very likely that multiple air interface models will be deployed in China's 3G/4G systems. The article "Efficient Resource Allocation for China's 3G/4G Wireless Networks," presents an all-IP differentiated services platform to interwork heterogeneous wireless access networks with the Internet backbone.

A novel coverage-prediction method for outdoor radio propagation based on the inversion theory is proposed here. Coverage prediction in a wireless cellular network is treated as an inverse problem instead of using high-precision geometric modeling. More precisely, the problem is solved by an inversion of the measured data under some a priori constraints, and the complicated propagation-prediction problem is reduced to solving a system of large-scale ill-condition equations. The effectiveness of the proposed method is demonstrated by using experiments under various radio environments in Guangdong, China. The prediction results are approximately consistent with independent checking samples, and the proposed strategy is compared with other existing approaches. [ABSTRACT FROM AUTHOR]

In this article we propose a unified radio net- work architecture, broadband wireless multimedia (BWM), which integrates broadcasting service and broadband wireless access service at both the application and physical layers. A simple, flexible, and comprehensive radio resource management framework is developed for the unified radio network. It is shown that the proposed radio network architecture has many advantages over existing ones. In addition, the new architecture is currently being considered in China for the system level design. [ABSTRACT FROM AUTHOR]

China has fully embraced the remarkable growth and unprecedented penetration of mobile services, and has become the world's largest mobile cellular market. TD-SCDMA was proposed by the China Wireless Technology Standard (CWTS) Group in 1998, approved as one of the 3G standards by ITU in May 2000, and joined 3GPP in March 2001. This has been a major effort by China to advance its mobile communication systems and facilitate its own technological development in this critical area. TD-SCDMA, a combination of TDD and synchronous CDMA, offers several unique advantages over its alternatives, WCDMA and cdma2000, such as flexible spectrum allocation, low-cost implementation, and easier migration from GSM systems. This article reviews the development, key technical features, and deployment of TD-SCDMA in China. [ABSTRACT FROM AUTHOR]

The all-IP DiffServ model is expected to be the most promising architecture for QoS provisioning in China's next-generation wireless net- works, due to its scalability, convenience for mobility support, and capability of interworking heterogeneous radio access networks. This article focuses on efficient resource allocation in a wireless DiffServ architecture. Resource utilization efficiency is particularly important for China's wireless networks as the mobile user density in China is and will continue to be much higher than that in other countries. More specifically, we propose a novel buffer sharing scheme to provide assured service for real-time layer- coded multimedia traffic, which can guarantee the specific packet loss requirement of each layer with UDP as the transport layer protocol. An adaptive optimal buffer configuration can be applied to achieve maximum resource utilization over the time-varying channel. Assured service is also provided to TCP data traffic for guaranteed throughput, where the cross-layer coupling between the TCP layer and link layer is exploited to efficiently utilize the wireless resources. [ABSTRACT FROM AUTHOR]

In future public mobile access with high data rates, one of the main challenges we face is spectral efficiency. In this article we will focus on the following new spectrally efficient downlink multiple access techniques that may be essential parts of China's Beyond 3G system development: dynamic code-division multiplexing, an adaptive multi-input multi-output technique in distributed wireless communications systems, and interleaver pattern division multi-access. [ABSTRACT FROM AUTHOR]

Presents a wireless local area network (WLAN) designed for an integrated circuit factory in Hong Kong, China. Use of the hierarchical genetic algorithm (HGA); Capabilities of the HGA; Identification of a precise number of base stations for the WLAN network.