Hongbin Liang

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Mobile cloud computing is a promising technique that shifts the data and computing service modules from individual devices to a geographically distributed cloud service architecture. A general mobile cloud computing system is comprised of multiple cloud domains, and each domain manages a portion of the cloud system resources, such as the Central Processing(More)
Mobile cloud is a machine-to-machine service model, where a mobile device can use the cloud for searching, data mining, and multimedia processing. To protect the processed data, security services, i.e., encryption, decryption, authentications, etc., are performed in the cloud. In general, we can classify cloud security services in two categories: Critical(More)
With Internet environment is getting optimized and users preferring mobile communications, Cloud Service Providers (CSP) aim to provide services to users depending on their geographic locations with higher service availability and faster access speed. Mobile cloud computing falls into this category, where mobile users can move around and request cloud(More)
In this paper, we study adaptive resource allocation for elastic media services in service-oriented network. We form ulate the resource allocation problem as a semi-Markov decision process (SMDP) to capture the dynamics of user arrivals and departures. Based on the network resources, an optimal decision is made to maximize the overall system rewards by(More)
Optical orthogonal codes (OOCs) are widely used as spreading codes in optical fiber networks. In this paper, a bound on the code size of 2-D OOCs with both at most one-pulse per wavelength (AM-OPPW) and at most one-pulse per time slot (AM-OPPTS) is derived. Accordingly, two constructions of optimal 2-D OOCs with both AM-OPPW and AM-OPPTS are proposed via(More)
Generally, free-form surfaces are machined using the following procedures: by a CAM postprocessor a free-form surface is approximated into a number of smaller straight lines or curves to send a CNC system in the form of G/M code, which focuses on the constant speed of cutter location point instead of the constant speed of cutter contact point. These methods(More)