Following fast growth of cellular networks, more users have drawn attention to the contradiction between dynamic user data traffic and static data plans. To address this important but largely unexplored issue, in this paper, we design a new data plan sharing system named Prometheus, which is based on the scenario that some smartphone users have surplus data traffic and are willing to help others download data. To realize this system, we first propose a mechanism that incorporates LT codes into UDP. It is robust to transmission errors and encourages more concurrent transmissions and forwardings. It also can be implemented easily with low implementation complexity. Then we design an incentive mechanism using a Stackelberg game to choose assistant users ( @math ), all participants will gain credits in return, which can be used to ask for future help when they need to download something. Finally real environment experiments are conducted and the results show that users in our Prometheus not only can manage their surplus data plan more efficiently, but also achieve a higher speed download rate.
Research in recent years focuses on the cellular networks. SHAKE was proposed in @cite_2 , which lets some mobile hosts temporarily connect mutually and selects several kinds of paths to communicate with outside. It could ensure mobile hosts get larger transfer capacity. However, not only mobile hosts but also correspondent hosts on the internet require special software for SHAKE. So it is difficult to be popularized. In @cite_14 @cite_17 , had conducted extensive research into the issues raised. In SHAKE, mobile hosts which are connected with fast local link can use multiple wireless links owned by each host simultaneously to communicate with hosts on the internet. SHAKE can improve the data transfer speed.
@cite_14 @cite_17 @cite_2
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Wireless links used for mobile communications have some problems such as narrow bandwidth and low reliability. To offer high speed communication on wireless links, we have proposed SHAKE(SHAring multiple paths procedure for cluster networK Environment). In SHAKE, mobile hosts which are connected with fast local link each other use multiple wireless links owned by each host simultaneously to communicate with hosts on the internet. In this paper, we propose a fast WWW access method with SHAKE (Web SHAKE). The feature of Web SHAKE is that it does not require any special software on web servers on the internet to use SHAKE. The feature is realized by an use of HTTP Proxy Server which works on each mobile host. We present the result of performance evaluation of the Web SHAKE. We have shown that data transfer speed was improved by Web SHAKE in comparison with normal WWW access from three experiments. Mobile computing has become very popular. Many people can access the Internet through mobile hosts. However, wireless links used by mobile hosts have problems such as narrow bandwidth and low reliability. To offer high-speed communication on wireless links, we have proposed SHAKE (SHAring multiple paths procedure for cluster networK Environment). In SHAKE, mobile hosts that are connected by a fast local link use multiple wireless links owned by each host simultaneously to communicate with hosts on the Internet. An experimental system was implemented and evaluated. In this system, however, not only mobile hosts but also correspondent hosts on the internet require special software for SHAKE. We propose a fast WWW access method with SHAKE (Web SHAKE). The feature of Web SHAKE is that it does not require any special software on Web servers on the Internet to use SHAKE. The feature is realized by an use of HTTP proxy server that works on each mobile host. We present the result of a performance evaluation of the Web SHAKE. We can access Internet by carrying a portable computer and using the wireless communication. The wireless network with PHS (Personal Handy phone System) and portable cellular telephone has only rates of tens of Kbps to a few Mbps. Compared with the cable network, the transfer rate cannot generally satisfy a highly developed communication services such as large file transfer and real-time communications. This paper proposes a protocol, SHAKE, for sharing multiple paths in cluster type network that is a kind of LAN in which some mobile hosts temporarily connect mutually. SHAKE provides the functions for composing cluster type network, and dispersing traffic efficiently by measuring transfer rate and round-trip time. As a mobile host has only low transfer capacity in individual to communicate with outside, if whole capacities of other hosts which compose cluster type network are shared, we can get larger transfer capacity and satisfy the required communication services.