TY - JOUR
T1 - Proxy handoff support for multi-ISP heterogeneous networks
AU - Lee, Chao Hsien
AU - Huang, Chung Ming
AU - Zhuang, Jun Hao
N1 - Funding Information:
This study is supported by the National Science Council of the Republic of China (Taiwan) under the grant number NSC 100-2219-E-006-002 and NSC 97-2218-E-037-002-MY2.
PY - 2013/9/1
Y1 - 2013/9/1
N2 - Due to the reusable characteristic of cache, proxy servers are widespread to improve the quality of network services. As popularity and maturity of wireless access technologies continue to grow, 3G/3.5G, Wi-Fi, or WiMAX mobile nodes (MNs) may keep moving across heterogeneous networks. It is unreasonable to let MNs retrieve cached data from the same proxy server along their traveling routes. Hence, proxy handoff is meant to help MNs switch their proxies dynamically. Regarding the realistic network environment, most proxies are provided by Internet service providers (ISP). Once a MN moves across the domain of one ISP, it can not access the data cached in the proxy. This kind of proxy access limitation obstructs cache cooperation and forwarding among proxies. This article is motivated to utilize the Session Initiation Protocol and the mobile agent concept to propose a proxy handoff framework for multi-ISP heterogeneous networks. Different strategies are designed to overcome proxy access limitation. The simulation results compare and analyze the differentiation among three proxy handoff strategies.
AB - Due to the reusable characteristic of cache, proxy servers are widespread to improve the quality of network services. As popularity and maturity of wireless access technologies continue to grow, 3G/3.5G, Wi-Fi, or WiMAX mobile nodes (MNs) may keep moving across heterogeneous networks. It is unreasonable to let MNs retrieve cached data from the same proxy server along their traveling routes. Hence, proxy handoff is meant to help MNs switch their proxies dynamically. Regarding the realistic network environment, most proxies are provided by Internet service providers (ISP). Once a MN moves across the domain of one ISP, it can not access the data cached in the proxy. This kind of proxy access limitation obstructs cache cooperation and forwarding among proxies. This article is motivated to utilize the Session Initiation Protocol and the mobile agent concept to propose a proxy handoff framework for multi-ISP heterogeneous networks. Different strategies are designed to overcome proxy access limitation. The simulation results compare and analyze the differentiation among three proxy handoff strategies.
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U2 - 10.1080/02533839.2012.740585
DO - 10.1080/02533839.2012.740585
M3 - Article
AN - SCOPUS:84882321810
SN - 0253-3839
VL - 36
SP - 760
EP - 770
JO - Journal of the Chinese Institute of Engineers, Transactions of the Chinese Institute of Engineers,Series A
JF - Journal of the Chinese Institute of Engineers, Transactions of the Chinese Institute of Engineers,Series A
IS - 6
ER -