Shanzhi Chen

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Internet of Things (IoT), which will create a huge network of billions or trillions of “Things” communicating with one another, are facing many technical and application challenges. This paper introduces the status of IoT development in China, including policies, R&D plans, applications, and standardization. With China's perspective, this(More)
Orthogonal frequency-division multiplexing (OFDM), with its own advantages of spectral efficiency (SE) enhancement and flexible resource allocation, is a promising basic technique for fulfilling the ever increasing demand for high-data-rate transmission and various service type support for mobile multimedia communications. In the meantime, energy efficiency(More)
Mobile cloud computing and other new emerging communication paradigms such as mobile social networking and Internet-of-Things, have brought challenges in flexibility, efficiency, and scalability to the current LTE network. Inspired by thinking of the fundamental mechanisms in LTE as reasons causing those problems, SoftNet, a software defined decentralized(More)
BitTorrent is one of the most well known peer-to-peer file sharing applications, accounting for a significant proportion of Internet traffic. Current BitTorrent system builds its overlay network by randomly selecting peers, a fact that has the potential to seriously handicap both individual performance and generate a significant amount of cross-ISP traffic.(More)
In this paper, pattern division multiple access (PDMA), which is a novel nonorthogonal multiple access scheme, is proposed for fifth-generation (5G) radio networks. The PDMA pattern defines the mapping of transmitted data to a resource group that can consist of time, frequency, and spatial resources or any combination of these resources. The pattern is(More)
In this work, we introduce a novel multiple access scheme which is based on the joint design of the system signature matrix at the transmitter and the successive interference cancelation (SIC) based detector at the receiver. The symbols of the different users are judiciously spread in the frequency (space) domain, which can be effectively exploited by the(More)
MILSA (Mobility and Multihoming supporting Identifier Locator Split Architecture) [1] has been proposed to address the naming and addressing challenges for NGI (Next Generation Internet). we present several design enhancements for MILSA which include a hybrid architectural design that combines “core-edge separation approach” and “split approach”, a(More)
Future wireless mobile broadband systems will address the demand of high data rate due to the explosive growth of mobile Internet traffic. Deploying a layer of dense small cells with low transmit power is an effective means to meet the data rate requirement. As one of the prospective solutions to future mobile broadband systems, TDD-based LTE-Hi aims to(More)
In practical orthogonal frequency division multiplexing (OFDM) wireless systems, such as long term evolution (LTE), the subcarriers assigned to one user in one scheduling determination always use the same modulation and coding schemes (MCS). Taking this implementation issue into consideration, multiuser resource allocation with subcarrier grouping is(More)
Ultra-dense networking (UDN) is considered as a promising technology for 5G. In this article, we define user-centric UDN (UUDN) by introducing the philosophy of the network serving user and the "de-cellular" method. Based on the analysis of challenges and requirements of UUDN, a new architecture is presented that breaks through the traditional cellular(More)