Handoff Mechanism in Universal Network

With the development of Internet technology, People's demand for mobile access is growing. The Wi-Fi technology, based on the IEEE 802.11 standards, is rapidly becoming a main stream for mobile access, as a result of extensive implant laptops, mobile phones, game consoles, and other personal portable lectronic equipment. However, traditional Internet is designed for providing the fixed, cable interconnection services to users, and it's not fit to mobility. The Universal Network theory, proposes a new Internet architecture based on Identifiers Separating and Mapping Scheme, which is able to better support mobility. Therefore, research on the access and handoff of Wi-Fi terminal in Universal Network becomes more important.In this thesis, we mainly focus on the design and implement of Wi-Fi terminal automatically handoff mechanism in the Universal Network. Firstly, we briefly introduce the access and authentication process, as well as the access steps involved in the wireless environment; Secondly, based on the analysis of the Wi-Fi terminal's general handoff process, we propose the design objectives of the automatic handoff mechanism, and also design the improved handoff process in the link layer( prescan handoff algorithm) and the "network layer" for fast handoff, and a mechanism of Automatic Handoff Fanite State Machine (AHFSM) to achieve automatically handoff control; Thirdly, we implement these in Linux OS.The traits of the implementation are shown as follows: 1) With the Linux thread library, we implement AHFSM mechanism, including the event-triggered control, timer control, network read/write control units, etc.; 2) With the Linux wireless libraries for IEEE 802.11, we modify it to implement link layer functions; 3) We uses data structure of two-way linked list to store the wireless APs information, and sort these based on RSSI value for link layer handoff; 4) With Linux routing operation library, we modify it to implement routeing operation in "network layer"; 5) We use the UNIX UDP socket to implement message interaction of handoff and authentication process in "network layer"; 5) With the Linux GTK graphics library, we implement the user interface, for users operating and viewing, as well as to meet the demand for the use and debuging.With installing the Wi-Fi terminal program in the prototype system of Universal Network, we test AHFSM mechanism and prescan handoff algorithm. Tests show that with control of the automatically handoff mechanism, the Wi-Fi terminal can not only support automatically access and prescan automatically handoff, but also manually access and handoff mode and manual operation in automatic handoff procedure, and It also can avoid "Pingpang" effect. Tests also show that manual handoff mode and automatic handoff mode are both meet the general needs of real-time business.

Once Upon A Time In Zucc

when I was a freshman, I co-founded a “Movie Club” in my college with my friends and was selected as the chairman. After like a year after the establishment of “Movie club”, we got a chance to host an “outdoor movie party” at a major foreign language culture festival. We were so excited that finally we’ve got a golden chance to prove our quality and make our voice heard . Actually, as a new society, “Movie Club” was not supposed to be offered this chance of hosting such a grand event. Fortunately, this activity was nearly removed from the festival because a veteran society, English Society, which was originally assigned to be responsible for that project, quitted due to financial problem. I heard that good news from my classmate and talked with the committee of the “Foreign Language Culture Festival”. Certainly, we won the “bid for hosting outdoor movie party”.
However, such a big event would for sure cost us a big sum of money. Our accountant did the math and told me that the expense would be like 2500 Yuan in total. I dispatched my people to look for sponsorship from the stores near our campus. It turned to be a huge letdown. So I held a brainstorming session to come up with ideas of getting a sponsor. To be honest, all of us were inexperienced newbies that time, and we racked our brains four hours trying to get us out of this awkward financial predicatment. At the brink of giving up, our poster designer told us his father had close relationship with Bird Cellphone Company’s boss. We took a bus to Ningbo and successfully “convince” Bird that what we were doing would help a great deal with pushing their products in our university. Honestly, not matter how hard we tried, we would never get their support if it weren’t for the poster guy’s father’s help. I’m still grateful to the poster guy for all that he did for us. It was my first time to learn the importance of establishment and maintenance of a good rapport with people. Sometimes, a person’s interpersonal communication skills count more than his professional know-how. I admit that I was a bit tense when I was dealing with Bird’s marketing manager. I felt like we don’t deserve that much of money. I was wrong. Actually, sometimes people just have no clue what they can do. It’s about having faith in our capability and seizing the opportunity.
Bird agreed to offer 3000 Yuan to us, but the money would only be transferred after the outcome of our event was proved to be satisfactory. Thus we could but borrow money from friends and prepared it with great efforts. The worse thing was, as soon as learning that we got a commercial sponsorship from Bird, our “Foreign Language School demanded to have the money in accordance with the rules of our University, therefore we couldn’t use the money without suffering from a lot of bureaucracy in the finance department. That really drove me nuts because those were money we borrowed from friends. Some of my men complained and wanted to quit as a tacit protest against the school’s “ridiculous” rules. Yeah, it’s so not fair that the school contributed zero to our activity but compromised what we were trying so hard to do, nevertheless complain would even make things worse. As a matter of fact, nothing in real word is totally fair and reasonable. Instead of bearing bitterness against the school, it’s would be a lot wiser for us to live with that unfairness and absurdity and give it our best shot regardless of anything standing in the way or anybody who wants to make us look real bad. We tried to get some extra money from our parents, cos you know, when the little money is tied up with the bureaucratic rep tape, there is almost no possibility of us to get the money in good time if we needed to pay the bills. The bottom line is, the party turned out to be a hit of the festival. People flocked into the playground, pogoed to the rock band we invited, burst out laughing when watching the movie “ My Big Fat Greek Wedding”. Bird company was fairly satisfied with the outcome, and money was transferred to my account instantly. We went out for a dinner to celebrate it with the money left. We felt so happy and relived after all that we’d been through together. Nothing is like leading a great team and making the best out of our lovely partner.

Optical Code Division Multiple Access

Optical Code Division Multiple Access (OCDMA) technology is one of the three most important multiplexing/ multiple access technologies in the field of optical communication, whose advantages of the high bandwidth utilization and asynchronous access make it become one of the most important solutions in all-optical communication network. I feel the need-the need for cheap Wholesale nike shoes！ Around codes, system and technical integration, this paper puts forward to the methods of enhancing system capacity, in order to provide power basis for enhancing system capacity and lowering the multi-user interference through researching address codes, forming the scientific background about multi-system integration.First, this paper summarizes the characteristics of typical address codes and compares their relevant parameters to get their application circumstances. Do you like those cheap men's nike shoes?Paying more attention about the relationship of validity and reliability in communications systems, referencing the conception of energy efficiency rate in Sensor Networks, the paper presents inferior optimal orthogonal code by use of code weight, improving One-dimensional optimal orthogonal codes under a certain bit error rate (BER) , enhancing the code's capacity. And user-gain coefficient, freedom-gain and calculating complexity and so on become the standard in the method, which have some theoretical value.Second, utilizing the advantages in code capacity, correlation and bit error rate about two-dimensional address codes and integrating with the idea about hybrid code, this paper puts forward to the two-dimensional frequency-hopping address code coding method. This method gives an example: it using Walsh code as spread spectrum series which is generated by Hadamard matrix, and unipolar code as frequency-hopping series, improves the utilization of optical wave, at the same time, lowers the bit error rate .These north face jackets are your best choice!At last, the calculating result is given.Finally, taking into account of the development about all-optical communication network s, this paper presents OCWT system based on OCDMA,WDM,OTDM technologies in the basis of the previous studies, making the combination of the three multiplexing technologies become possible in principle. Finally, the paper gives the enhancing capacity and lowering BER simulation results in the ideal condition, while brings new challenge in system integration and synchronization and extends ideas for related researches.In order to increasing the number of optical user access, the paper considers that if we can integrate several enhancing capacity methods ,the system capacity can be further enhanced and improve the bandwidth utilization of fiber.
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GE membrane

Take charge of business development and sales for GE membrane technologies business in China. Leverage all the resources from different functions for market research, industry analysis, NBO tracking, project execution, business partner establishment Etc. Oh，Jerry，don＇t let＇s ask for the moon.We have the ralph lauren polo shirts. Cover various industries including air pollution control (for cement, steel, power etc.), composites, filter (for vacuum cleaner, clean room etc.Cheap Lacoste Polo Shirts are popular everywhere. ), microfiltration, die cut, electronic components etc.

Expanding GE Energy Membrane business in China. Keep your cheap nike shoes close!Membrane business is a new business GE energy started in China at the beginning of 2008. Working on market research, NBO tracking, and existing business transition from US. New customer establishment, and strategic business partner development etc.
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industry

With the rapid development of social economy and industry and rapid growth of population, people want to live a better life in a much better surroundings. Thus monitoring environment mediums is becoming a social focus. Especially the environmental quality is degrading, more attention is paid to how to monitor environment medium. The traditional mode of environment monitoring, which is mainly manual and poor intelligence, can not meet the requirement of modern environment monitoring. To meet this demand, a wireless sensor tiny network to monitor environment medium was designed and developed on the basis of the existing hardware platform of ZigBee wireless sensor network (WSN). The thesis contained three sections as follows:Firstly, the sensor module of environment medium WSN was designed and optimized. Three kinds of converting circuits for oxygen sensor, temperature sensor and humidity sensor were designed. Quadratic rectification was applied to reduce the error of measurement. The error of oxygen sensor was reduced from±0.7% to±0.4%; while the error of temperature sensor was reduced from±0.8℃to±0.4℃; the error of humidity sensor was reduced from±2RH% to±0.9RH%.Secondly, a wireless sensor tiny network to monitor environment medium was designed and developed.

Responsibilities and Achievements

Work in Sony Ericsson Mobile Communications China CTO technical management department, as Chief engineer and project manager
? Involving and lead Qualcommcheap straighteners android platform development? Chief engineer of STE platform in SEMC China; lead both China and Sweden’s HW/SW system engineers to build up and maintain the STE’s platform; system resource allocation and management; overall technology responsible for the platforms; define and drive the platform system KPI both HW/SW; help product engineers identify and solve the encountered problems in products development phase; organise task force and lead task force for specific issues; lead the test activity within platform, lead test team to build up the test cases for platform problems and define the schedule; introduce new technology and features into the platform; present to steer group regarding platform status and resource required for feature development; introduce new chips and components into platform and organize the verification; Approve the new components to be used on platform;chi pink dazzle maintain the cost of the platform
? Lead global technical teams to lead T707 product team to work out the AGPS pure UE-Assistant position feature(the first handsets full fill TMO US pure MSA requirement in SEMC);? Involving in SEMC TD-SCDMA vendors evaluation and draft platform architecture and roadmap
? Research and develop new technology and prototyping on products? Lead CMMB concept study on SEMC OSE platform and Symbian platform by cooperation with cross team members including HW/SW system engineers, OS/DD engineers from Design Unit (DU) China, EMP experts of Ericsson Sweden; responsible for project scope define, budget plan define, resource plan define; architecture design and solution design; Present the technology and demo the prototype to the portfolio planners and DU management teams to sell in the technology to our platform products
? Chief engineer of Entry platform of SEMC T&R China; lead HW/SW system engineers to build up the TI platform and maintain the platform; overall technology responsible for the platform; draft platform intent and draft system platform’s schedule and resource allocation; introduce new technology into the platform; coordinate together with main platform PM on other sub projects; help DU engineers identify and solve the encountered problems during products’ development phase;? Evaluate team chi hair straightener members’ performance in the project which contribute to the yearly individual performance review? Member of T&R China management team to discuss and decide project and line related issues? Filed one patent in SEMC up to now

Hightlights

Became LCAG cargo station manager at 25 (CTU; 2005)Became the youngest National “Senior Logistician Certificate” holder at 25 (2005)nike running shoes
Became LCAG freighter station manager at 26 (CAN; 2006)LCAG Oscar “Individual Star” winner, year 2007 (10 winners out of 4500 employees in LCAG each year)Became LCAG regional handling manager at 29 (2009)Experience of establishing new stations CTU (2005) and SZX (2007)
Job responsibilities:Responsibilities in CAN (including but not limit to)- Overseeing an ops-team with five members, and be overall in charge of a/c ops, cargo handling, and documentation- Supervising MD-11F (CAN-FRA) aircraft WAB control & ramp operations, and cargo handling for PAX flight A343/346 (CAN-FRA)- Be responsible for ops-team personnel recruitment and training- Cargo handling GHA (GBIACnike trainers
logistics centre) management and service monitoring- A/C handling GHA (GAHCO) management and service monitoring- RFS coordination and monitoring
- Overseeing acceptance checks and handling procedures of DGR, VAL, AVI, LHO, DIP, and other special shpts- Coordinate with local authorities, e.g. Security, Customs, Dispatch, Airport Police, CIQ, etc.- Be responsible for all station security and safety issues according to local regulations as well as international regulations, e.g. IATA rules- Crew handling, including monitoring Catering and crew hotel services- Be responsible for various audits from upper managementResponsibilities in SZX (including but not limit to)- Supervising a cargo handling team of five staff at SZX
- Full scale outbound cargo handling with B747F eight freighters weekly, which includes SZX-AMS/VBSBCN/MAALOS services- Transit cargo coordination in Asia-pacific area (SZX-KIX/ICN/TSN)- EU – SZX – XOM/XYS/XNQ airsea project implementation- RFS coordination and supervision (SZX-HKG, twice daily service)- Monitoring contracted GHA (ICCS) and ensure compliance of LCAG C2K process- Be responsible for accounting, and bill settlement- Be overall responsible for cargo and security auditMain achievements- Relief flight (charter MD-11F) handling at CTU after Chengdu earthquake disaster (May & Jun 2008)- Remote supervision RFS setup and coordination for over 500 tons cargo in SZX monthly (2008)
- Leading CAN ops-team to establish a new station (SZX) without additional headcount (2007)- 100% flight punctuality rate annually (2008)
- Yearly load factor is as high as 107%, ranks No.1 in China region (2007)- Saving 47% cost by local ULD tag ordering, and providing to other stations (2007, 2008)Responsibilities in CAN (including but not limit to)- Overseeing an ops-team with five members, and be overall in charge of a/c ops, cargo handling, and documentation- Supervising MD-11F (CAN-FRA) aircraft WAB control & ramp operations, and cargo handling for PAX flight A343/346 (CAN-FRA)- Be responsible for ops-team personnel recruitment and training- A/C handling GHA (GAHCO) management and service monitoring- RFS coordination and monitoring- Overseeing acceptance checks and handling procedures cheap nike shoes
of DGR, VAL, AVI, LHO, DIP, and other special shpts- Coordinate with local authorities, e.g. Security, Customs, Dispatch, Airport Police, CIQ, etc.- Be responsible for all station security and safety issues according to local regulations as well as international regulations, e.g. IATA rules- Crew handling, including monitoring Catering and crew hotel services- Be responsible for various audits from upper managementLast but not least, supporting SZX team stablishment.

The information

The information construction of China Huadian tender Co., Ltd. The information construction of Beijing Guo'dian'nan'zi Etecom Technology Co., Ltd.2006/1--Present:Beijing Kostech Technique Corporation.Industry: Computer ServicesTechnical quality department PLM Support EngineerDesignation:Support engineer/Software engineer. As the Support Engineer for UGS product in the company . My polo shirts the domain CAD/CAE/CAM .I have accepted the skill trains from UGS project, skilled grasps the software operation and the related question. Concrete work: In project implementation analyse the demand for customer, carry on the investigation and studies for its actual situation, according to investigates and studies the result to compileing a project.Carry on the ralph lauren polo shirts to the customers make Demonstration and correlation explanation. Support and technical service for the coustomers. The rich profession experience of PLM solution.cheap ralph lauren polo shirts: 1. The participation to company OA system project, responsible for the OA project partial work. 2. Completes the the website of the company independence(content plans, page design,website frame).