Introduction of Research on Cloud Computing and Mobile Computing Jian PENG College of Computer Science, Sichuan University E-Mail: jianpeng@scu. edu. cn
Curriculum Vitae o Education： 2004 Ph. D. in Computer application technology 2008. 3 -2009. 3 government-sponsored visiting Scholar , University of Maryland, USA o Publications: More than 40 papers in international conferences and core journals in China, in which there are more than 10 papers indexed by SCI or EI. 5 sets of teaching materials have been compiled, one is a translation. o Scientific Achievements: In charge of the sub-project of National 863 plans projects, the fund of State Key Laboratory project, the Key Science-Technology Project of Sichuan Province, Applied Basic Project of Sichuan Province, Microsoft Courses of Ministry of Education, the Key Science-Technology Project of Chengdu. Researcher for more than 10 scientific research projects, including 973 project. o Awards: n n First prize for Excellent Teaching Achievements Award of Sichuan Province Third Prize Science and Technology Progress Award of Sichuan Province Applied for National patent on the 2 items related to Internet of Things Leading Young Faculties Award, Sichuan University, 2002 -2004 o Research Interesting o Cloud Computing, IOT, Mobile Computing
Major Research p Cloud Computing p Internet of Things. Wireless Sensor Network p. Mobile Computing
Major Research Field–Cloud Computing Ø Main Research Contents ： n Resource scheduling technology in Cloud Computing n Research on cloud platforms Ø Research Projects： n Research and application of Distributed dynamic and credible verification platform （Key Science-Technology Project of Sichuan Province） n Public Digital Media Cloud Computing Service Platform （ Cooperate with China Telecom）
Public Digital Media Cloud Computing Service Platform • a service platform , which is called “Public Digital Media Cloud Computing Service Platform
Public Digital Media Cloud Computing Service Platform The design ideas： ü ü ü Front-end network and back-end network isolation Front-end service and back-end maintenance isolation Provide users with a service which can be customized Maximize the use of the existing network、 server and storage resources High performance and high availability
Public Digital Media Cloud Computing Service Platform proposed the following layered logic architecture
Public Digital Media Cloud Computing Service Platform • • Four layers in the architecture Resource layer：Infrastructure unit ，such as compute server 、storage server、network infrastructures；the basis of the entire service platform Virtual layer：The entire public service platform is organized in a cloud computing architecture manner, using Iaa. S (Infrastructure as a Service) approach to virtualize all the physical resources； Management layer：runs programs that organize and manage all virtualized physical resources； Service layer：provide users with various services like program test、 Report generation
Public Digital Media Cloud Computing Service Platform • I. It’s a business cloud platform： the platform meet the needs that many users want to develop、test、sell and copyright software about music、mobile internet、video games in digital new media business area II. Analyze the service logic , then , we divide the complex business logic into a number of independent service primitives III. Archive resource reuse in the service primitive level
Public Digital Media Cloud Computing Service Platform • It uses overlay and self-organization network: ① As our platform provides users with public services , suck as application development services, testing services, application market services, digital rights and many other different services ② Different network architecture is required. ③ Our platform has a self-organized network structure according to different business needs
Public Digital Media Cloud Computing Service Platform • It’s a mass data cloud storage platform: a) Our platform can be either used in structured or unstructured massive amounts of digital media b) In traditional KV query, the support for range query and multi-criteria query is poor c) In this platform, problems can be solved
Major Research Field-Internet of Things Ø Main Research Contents ： n Research on sensor network protocols and Content networking application Ø Research Projects： n Communication management and data transmission protocol issues in large-scale heterogeneous sensor networks （State Key Laboratory project） n Smart Home System n Accurate positioning of logistics system
The research on wireless sensor networks o In this project, we researched a new heterogeneous network model with energy and monitored objects heterogeneity. And then, we put forward an energy-efficient prediction clustering algorithm (EEPCA). o We have achieved the opening project of state key laboratory of net working and switching technology “the research on communications management and data transfer protocol for large-scale heterogeneous sensor networks”
Fig. 1. Dynamic clustering structure by EEPCA
The main contributions of EEPCA o The probability for nodes to become cluster heads is directly related to energy factor and communication cost factor. All nodes in the networks take turns as cluster heads to achieve uniform energy consumption. o In order to save energy consumed by broadcasting energy information in each round of nodes clustering, an energy predication model is established for nodes whose data collection is of regularity in time interval and message length.
The main contributions of FPAD o We also focus on heterogeneous delay tolerant mobile sensor networks. o We proposed a data gathering algorithm-FPAD applies to HDTMSN (heterogeneous delay tolerant mobile sensor networks) composed by different nodes monitoring different objects.
node random waypoint mobility model
The main contributions of FPAD o FPAD calculates nodes transmitting and forwarding probability and then forwards messages according to nodes energy consumption and message transmission delay. o FPAD proposes message queue management mechanism based on the current delay tolerance of the message.
Recent research o Now we are concerned with energy hole problem. We proposed a nonuniform node distribution clustering algorithm to effectively avoid the energy hole. o We divides the network into rings and cluster is limited within the ring.
Recent research o Furthermore, we introduce density control mechanism, active nodes are generated by election. Those nodes that fail are put into hibernating state to save energy. o By this way, we can balance the nodes’ energy consumption and decrease the dead speed of the nodes. o In future, we will research energy hole problem in multi-sinks networks.
Related papers o o Data Delivery Scheme of Delay Tolerant Mobile Sensor Network Based on Node Priority. Computer science, 2011, 38(3): 140 -143. Energy efficient prediction clustering algorithm for multilevel heterogeneous wireless sensor networks. Journal of Systems Engineering and Electronics, Submitted. Relative Distance-based Clustering Algorithm for Multilevel Energy Heterogeneous Wireless Sensor Networks. Computer science, accepted. Forwarding Probability-Based Data Delivery for Heterogeneous Delay Tolerant Mobile Sensor Networks. Journal of software, Submitted.
Major Research Field–Mobile Computing Ø Course Offerings ： n n Mac OS and i. Phone Development Foundation Software development on Smartphone Ø Translation: n “Learning Cocoa With Objective-C” Ø Main Research Contents ： n n n Mobile device protocols Mobile Cloud Computing and Mobile Application( such as iphone energy saving)
Major Research Field–Mobile Computing 1. Project： 2. Research and application of Plug - and - play platform based on Mobile environments (Key Science-Technology Project of Sichuan Province) 1. Apple Technology Joint Lab 2. Wo Cloud 3. Software of iphone 4. UI Design for Care. Land Navigation System ( IPhone 2010 version)
Plug - and - play platform based on Mobile environments Figure 1
Plug - and - play platform based on Mobile environments o o o Mobile Peer module (MIDP endpoint)、Relay Agent and Aggregation point for other that require the use plug and play middleware for mobile environment. Relay Agent module and MIDP endpoint module interactive each other. With the relay agent is an entity, the MIDP endpoint access to P 2 P networks. At the same time, access to P 2 P networks for the MIDP endpoint, it must also be loaded MIDP protocol entities, which communicate with the relay agent. This constitutes a network structure shown above.
Plug - and - play platform based on Mobile environments o The middleware includes a side protocol, MIDP endpoints and relay agent communication protocol, the unity message format and meaning of shielding the underlying hardware. o Using P 2 P ideological, research and design services automatically search protocol, so that nearby mobile devices can spontaneously form dynamic network environment, and automatically publishing and search services;
MIDP endpoints protocol o MIDP endpoints protocol as a relay proxy client protocol can be summarized as the following three parts: o 1、MIDP endpoint of communication to achieve: Connection with the relay agent that like using the form of connection with http, upload / download the binary message which must be in line with the command. 2、 How to realizing the message format of MIDP port’s send/receive? We handle all the MIDP port’s data to a format of similar to XML. For MIDP development, we need only to use the unified format can program. 3、 We must make all the MIDP port’s P 2 P commands format be unified, and encapsulate all the P 2 P commands into different message, according to the format. At the same time, The system transfer the request of MIDP object to relay proxy, and get the answer message. o o
B. Relay Proxy and MIDP’s Communication o Figure illustrates the structure of relay proxy.
B. Relay Proxy and MIDP’s Communication o 1、 The communication of A 1 and A 3, on the basis of the same proxy o A saves A 1’s and A 3’s pipe ID, after A 1 and A 3 create input pipe on proxy A. when A 1 send message to A 3, proxy A will search its pipe list. And proxy A will send message to A 3, according to remaining mark of A 3, if A 1’s communication aim pipe is included in A’s proxy scope. (illustrating in Fig. 3’s solid arrows)
B. Relay Proxy and MIDP’s Communication o 2、 The communication of A 2 and B 1, on the basis of the different proxy o As mentioned earlier, when A 2 sends message to B 1’s input pipe, the message is sent to A 2’s proxy A firstly. Because A’s input pipe list have not included B 1’s input pipe, proxy A will start the process of searching B 1 input pipe. If A is ensure the existence of B 1, A will create a pipe to B 1, and send the message to B 1. Proxy B receives the message input channels, it will use its own binding list of the input pipe, transmit message to all the MIDP port. A typical example is B 1. (Illustrating in Fig. 3’s dashed arrows)
China Unicom's Wo Cloud i. Phone client This application is the i. Phone client of the personal cloud service system, named Wo Cloud, provided by China Unicom, it makes the access to this service with i. OS devices more easily.
Introduction of Wo Cloud The application relies on network service, users can use it to upload or synchronize data between the client and cloud server. Users can put their files, music, videos, contacts and so on, which are on their i. Phones, in the Wo Cloud, or by synchronization make sure that all those files and information are the latest. In addition, users can listen their music or watch their videos directly over the cloud, and do cloud computer access and operations.
Screenshots Registration Doing login
Screenshots File synchronization UI Synchronizing files Cloud service address setting
Power and Battery is an important indicator for smart phone. Color screen, wifi, GPS, Bluetooth and speakerphone will consume most of the power Let users choose to turn off 3 G, wifi, GPS, data access, Bluetooth, MMS, sensors, camera, gravity sensor, vibration and can adjust their screen brightness, sound volume, screen lock time.
Smart Phone App and Teaching Material
Major Research Summary Ø l l l Major Research: Cloud Computing Resource Scheduling mobile cloud computing credible verification platform Internet of Things Wireless Sensor Network
Contact Information： l l l Jian PENG College of Computer Science, Sichuan University, yihuan Road, Chengdu, Sichuan, P. R. C, 610065 E-Mail: jianpeng@scu. edu. cn Tel: +86 13980905589 +86 -28 -85469305
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