Network Traffic Cost Research Articles

Task optimization based on CPU pipeline technique in a multicore system

Currently, the multicore system is prevalent in desktops, laptops or servers. The web proxy can save network traffic overhead and shorten communication cost. Especially with the fast development of wireless Internet accessing, the web proxy will take a more important role in the future. To obtain the fast response and high hit rate from the proxy, we study the processing of web proxy and deeply exploit parallel features which exist in kinds of proxy work flow. We propose the CP technique to build parallel tasks in a proxy system. The result shows that our scheme can efficiently improve the data throughput and fully utilize the computing resources provided by the multicore system.

On Optimization and Security of Multimedia Communication in Wireless Mesh Networks

Wireless mesh networks (WMNs) are new type of networks in which every node can communicates to all neighboring nodes to enhance network reliability and performance. Network traffic cost optimization and its security in wireless mesh network is a challenging task. The concept of field based routing (FBR) is gaining popularity because it uses a little information to route the packets. These routing algorithms are robust, inexpensive and scalable. Authors believe that the FBR is the better choice for the multimedia communication in wireless mesh networks. Because FBR exchanges little information for building and maintenance of the routing tables. Regardless of robustness and scalability of the FBR it is also prone to different active and passive attacks. In this paper we first study that how multimedia communication can be done using FBR (optimization) and then take some security measures to eliminate the risk of intruder intervention in such communication. Multimedia FBR and its security has been extensively studied using Omnet++ network simulator to identify and isolate the malicious node and to prevent the traffic flows from various active and passive attacks.

Contextualized Ubiquity: A new opportunity for rendering business information and services

Stating that information and services are ubiquitous, means that they are available anywhere, anytime. The development of mobile-devices with wireless network-access capabilities, together with the decrease in network-traffic costs and the proliferation of free wireless hotspots, makes the use of mobile-devices, as Internet access tools, increasingly common and attractive. With novel forms of presenting information and to provide new ways to interact with consumers, new business strategies can be boosted, in Customer Relationship Management (CRM) and m-commerce. This paper describes a different approach to the relationship between customers and business-providers, based on contextualization mechanisms located in commercial products, which in turn acts as a gateway to static tag-embedded information as well as web-based information and services. A wine integrated management system, called SIGPV, is presented as a proof-of-concept, enumerating some of possible major business and CRM benefits.

A proxy-based integrated cache consistency and mobility management scheme for client–server applications in Mobile IP systems

In this paper, we investigate a proxy-based integrated cache consistency and mobility management scheme for supporting client–server applications in Mobile IP systems with the objective to minimize the overall network traffic generated. Our cache consistency management scheme is based on a stateful strategy by which cache invalidation messages are asynchronously sent by the server to a mobile host (MH) whenever data objects cached at the MH have been updated. We use a per-user proxy to buffer invalidation messages to allow the MH to disconnect arbitrarily and to reduce the number of uplink requests when the MH is reconnected. Moreover, the user proxy takes the responsibility of mobility management to further reduce the network traffic. We investigate a design by which the MH’s proxy serves as a gateway foreign agent (GFA) as in the MIP Regional Registration protocol to keep track of the address of the MH in a region, with the proxy migrating with the MH when the MH crosses a regional area. We identify the optimal regional area size under which the overall network traffic cost, due to cache consistency management, mobility management, and query requests/replies, is minimized. The integrated cache consistency and mobility management scheme is demonstrated to outperform MIPv6, no-proxy and/or no-cache schemes, as well as a decoupled scheme that optimally but separately manages mobility and service activities in Mobile IPv6 environments.

IP-based Clustering for Peer-to-Peer Overlays

The efficiency of overlay networks built on top of the IP network is often threatened by the mismatch between the topologies of the overlay and the underlying IP network, resulting in unnecessary traffic and increased latencies. Substantial improvement can be achieved by optimizing the logical links between overlay nodes to better match the IP network topology. In this paper, we propose a new method for selfoptimization of a DHT-based peer-to-peer overlay. Our method has no need for active measurement of inter-node latencies, thus minimizing network traffic costs of node insertion and topology maintenance. We verify our method by means of analysis of large data sets of latency measurements between arbitrary nodes on the Internet, proving correlation among common IP prefix length of communicating nodes and latency.

An adaptive hierarchical mobile IPv6 using mobility profile

AbstractThe Hierarchical Mobile IPv6 (HMIPv6), which is based on the Mobile IPv6 (MIPv6), has been proposed by IETF to reduce registration control signaling. It separates micro‐mobility from macro‐mobility with the help of an intermediate mobility agent, called the mobility anchor point (MAP), and exploits a Mobile Node's (MN's) spatial locality. However, all packets from a Correspondent Node (CN) to an MN are delivered through the MAP. That causes delay in packets delivery and the congestion of packets in the MAP so that it results in deterioration of network capability. To alleviate these problems, we propose a Hierarchical Mobile IPv6 protocol using not only spatial locality but also temporal locality. We introduce a profile for management of these locality information. According to the information in the profile, some packets are directly delivered to an MN, if MN seems to reside for a long time in the current subnet. Also, we introduce a handover scheme with the help of an L2 trigger, so that the proposed scheme takes nearly the same handover delay time as HMIPv6. The other contribution of this paper is to suggest a mathematical modeling and analysis of network traffic costs, MAP processing costs and handover latency for both HMIPv6 and the proposed scheme. Copyright © 2004 John Wiley & Sons, Ltd.