Huawei

About: Huawei is a company organization based out in Shenzhen, China. It is known for research contribution in the topics: Terminal (electronics) & Signal. The organization has 41417 authors who have published 44698 publications receiving 343496 citations. The organization is also known as: Huawei Technologies & Huawei Technologies Co., Ltd..

Harmonic Phasor Analysis Based on Improved FFT Algorithm

Abstract: An approach for power system harmonic phasor analysis under asynchronous sampling is proposed in this paper. It is based on smoothing sampled data by windowing the signal with the four-term fifth derivative Nuttall (FFDN) window, and then calculating harmonic phasors in the frequency domain with an improved fast Fourier transform (IFFT) algorithm. The applicable rectification formulas of the IFFT are obtained by using the polynomial curve fitting, dramatically reducing the computation load. The FFDN window can effectively inhibit the spectral leakage and the picket fence effect can be modified by the IFFT algorithm under asynchronous sampling, and the overall algorithm can easily be implemented in embedded systems. The effectiveness of the proposed method was analyzed by means of simulations and practical experiments for multifrequency signals with the fluctuation of the fundamental frequency and with the presence of white noise and interharmonics.

Wireless broadband communication method, device and system

Abstract: Embodiments of the present invention provide a wireless broadband communication method, device, and system, capable of improving the bandwidth and capacity for mobile broadband communication and reducing the cost. The method provided by the embodiment of the present invention comprises: a small cell receiving a dedicated synchronization signal Preamble sent by a user equipment (UE) in an idle state through a first message, the dedicated Preamble being distributed when the UE accesses a network for the first time; the small cell querying, according to the dedicated Preamble, whether a first signaling radio bearer SRB1 and/or a second signaling radio bearer SRB2 of the UE is stored; if yes, the small cell replying to the UE in a second message indication information indicating that the SRB1 and/or the SRB2 between the small cell and the UE does not need to be re-established or modified; and receiving an uplink radio resource control (RRC) message sent by the UE through a dedicated control channel (DCCH).

Intercloud Security Considerations

Abstract: Cloud computing is a new design pattern for large, distributed data centers. Service providers offering applications including search, email, and social networks have pioneered this specific to their application. Recently they have expanded offerings to include compute-related capabilities such as virtual machines, storage, and complete operating system services. The cloud computing design yields breakthroughs in geographical distribution, resource utilization efficiency, and infrastructure automation. These “public clouds” have been replicated by IT vendors for corporations to build “private clouds” of their own. Public and private clouds offer their end consumers a “pay as you go” model - a powerful shift for computing, towards a utility model like the electricity system, the telephone system, or more recently the Internet. However, unlike those utilities, clouds cannot yet federate and interoperate. Such federation is called the “Intercloud”. Building the Intercloud is more than technical protocols. Ablueprint for an Intercloud economy must bearchitected with a technically sound foundation and topology. As part of the overall Intercloud Topology, this paper builds on the technology foundation emerging for the Intercloud and specifically delves into details of Intercloud security considerations such as Trust Model, Identity and Access Management, governance considerations and so on.

Application software installation method and application software installation apparatus

Abstract: An application software installation method and an application software installation apparatus are used to solve problems of operation complexity and high implementation difficulty in an existing installation process of application software. The method includes: mounting mirror data of a virtual machine, and mapping the mirror data as one virtual disk in a local file system; updating a registry file in a virtual disk according to registry change record data in an application software package; and updating a file structure in the virtual disk according to the file change record data and the file in the application software package, thereby implementing installation of the application software in the virtual machine. In the process of installing the application software, a user of the virtual machine does not need to perform complex operations, thereby reducing software installation difficulty.