This work studies application acceleration for wireless and mobile data networks. The problem of accelerating application can be addressed along multiple dimensions. The first dimension is advanced network protocol design, i.e., optimizing underlying network protocols, particulary transport layer protocol and link layer protocol. Despite advanced network protocol design, in this work we observe that certain application behaviors can fundamentally limit the performance achievable when operating over wireless and mobile data networks. The performance difference is caused by the complex application behaviors of these non-FTP applications. Explicitly dealing with application behaviors can improve application performance for new environments. Along this overcoming application behavior dimension, we accelerate applications by studying specific types of applications including Client-server, Peer-to-peer and Location-based applications. In exploring along this dimension, we identify a set of application behaviors that significantly affect application performance. To accommodate these application behaviors, we firstly extract general design principles that can apply to any applications whenever possible. These design principles can also be integrated into new application designs. We also consider specific applications by applying these design principles and build prototypes to demonstrate the effectiveness of the solutions. In the context of application acceleration, even though all the challenges belong to the two aforementioned dimensions of advanced network protocol design and overcoming application behavior are addressed, application performance can still be limited by the underlying network capability, particularly physical bandwidth. In this work, we study the possibility of speeding up data delivery by eliminating traffic redundancy present in application traffics. Specifically, we first study the traffic redundancy along multiple dimensions using traces obtained from multiple real wireless network deployments. Based on the insights obtained from the analysis, we propose Wireless Memory (WM), a two-ended AP-client solution to effectively exploit traffic redundancy in wireless and mobile environments. Application acceleration can be achieved along two other dimensions: network provision ing and quality of service (QoS). Network provisioning allocates network resources such as physical bandwidth or wireless spectrum, while QoS provides different priority to different applications, users, or data flows. These two dimensions have their respective limitations in the context of application acceleration. In this work, we focus on the two dimensions of overcoming application behavior and Eliminating traffic redundancy to improve application performance. The contribution of this work is as follows. First, we study the problem of application acceleration for wireless and mobile data networks, and we characterize the dimensions along which to address the problem. Second, we identify that application behaviors can significantly affect application performance, and we propose a set of design principles to deal with the behaviors. We also build prototypes to conduct system research. Third, we consider traffic redundancy elimination and propose a wireless memory approach.

This thesis is trying to appraise benefits of implementation Cisco Wide Area Application Services (WAAS) in the organization. It's a relatively new technology, which seeks to answer the question, how to maintain control over the ever-increasing volume of traffic. This constant increase is mainly due to the use of new applications and business processes. WAAS should transparently improve throughput, speed and ease of use of all applications in the organization. The question is if this technology can reduce costs, improve productivity, simplify data protection, or what manner it is compatible with the corporate infrastructure. If is really consolidating and pooling application infrastructure for remote branch back into the data center best current solution, which facilitates access to remote users, in same way to which they are accustomed from the Local Area Network (LAN). The next one sections of this work will be summarized findings on the principle of Cisco WAAS. How the technology works. What is main optimizing method and how is currently use in the organization. It's weaknesses and strengths against the largest suppliers of similar WAN optimization solutions. The next one section will carry out an analysis, which showed us results to determine which applications are suitable for optimization technology and statements for the policy, which will be applied to the applications. This raises so many questions to be answered. The outcome of this work will be whether this technology is really what the organization needs, and whether this technology is applicable to all or only for certain types of applications or application protocols.