Design and Implementation of a Multi-homing Home Gateway
Date Issued
2006
Date
2006
Author(s)
Chao, Ting-Han
DOI
en-US
Abstract
Most users consistently have larger and larger bandwidth demand due to the rapid growth of applications and services over the Internet. Although there are various broadband access technologies such as ADSL and Cable modem, these heavy bandwidth users may not be satisfied with devices with a single network interface and its limited bandwidth. Together with the fact that various wireless broadband access technologies such as WLAN and WiMAX being mature, devices with multiple network interfaces (multi-homing devices) should become more and more popular.
The main purposes of multi-homing devices are to increase the total throughput, cost effectiveness as well as the reliability. Thus, the load balancing routing algorithm will be a definitive factor to the system performance. In this thesis, we design the architecture of a multi-homing home gateway with ADSL and IEEE 802.11g WLAN access networks, and propose a novel load balancing routing algorithm that takes the network status, QoS requirements of various applications, and traffic mixing effects on different networks into considerations. Moreover, we manipulate the IP tunneling technique to achieve the seamless handoff capability, when necessary.
In this study, we implement a prototype of the multi-homing home gateway in a Linux platform and test its performance. The throughput of the proposed system, called LoBRA System, is much higher than the Linux Trunk System, which is a popular Packet-based Inverse Multiplexing system implemented in Linux, indicating that the better bandwidth utilization can be achieved. Even under high traffic load, the LoBRA System still outperforms the Linux Trunk System in terms of throughput of FTP data transfers, or voice quality of VoIP applications. Finally, we also demonstrate the seamless handoff capability across different interfaces.
Subjects
多網接取
服務品質
交通混合
負載平衡
multi-homing
QoS
traffic mixing
load balancing
Type
thesis
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