TY - JOUR
T1 - Efficiency Analysis of WiFi Offloading Techniques
AU - Suh, Dongeun
AU - Ko, Haneul
AU - Pack, Sangheon
N1 - Funding Information:
This work was supported in part by the National Research Foundation of Korea Grant funded by the Korean Government (NRF-2014R1A2A1A12066986) and in part by the Ministry of Science, ICT and Future Planning, Korea, under the ITRC support program (IITP-2015-H8501-15-1007) supervised by the Institute for Information and Communications Technology Promotion.
Publisher Copyright:
© 2015 IEEE.
PY - 2016/5
Y1 - 2016/5
N2 - WiFi offloading is a promising technique for addressing the mobile data explosion problem. In this paper, we consider two types of WiFi offloading techniques: 1) opportunistic WiFi offloading, where data offloading is conducted only when a mobile node opportunistically meets WiFi access points (APs); and 2) delayed WiFi offloading, where data transfer is delayed with the expectation of future AP contacts. We developed analytical models on WiFi offloading efficiency, which is defined as the ratio of the amount of offloaded data to the total amount of data. Extensive simulation results are given to validate the analytical models and to demonstrate the effects of the average cellular residence time, the delay bound, the variability of the WiFi residence time, the WiFi data rate, and the average session duration on WiFi offloading efficiency.
AB - WiFi offloading is a promising technique for addressing the mobile data explosion problem. In this paper, we consider two types of WiFi offloading techniques: 1) opportunistic WiFi offloading, where data offloading is conducted only when a mobile node opportunistically meets WiFi access points (APs); and 2) delayed WiFi offloading, where data transfer is delayed with the expectation of future AP contacts. We developed analytical models on WiFi offloading efficiency, which is defined as the ratio of the amount of offloaded data to the total amount of data. Extensive simulation results are given to validate the analytical models and to demonstrate the effects of the average cellular residence time, the delay bound, the variability of the WiFi residence time, the WiFi data rate, and the average session duration on WiFi offloading efficiency.
KW - Delayed WiFi offloading
KW - efficiency analysis
KW - opportunistic WiFi contact
KW - opportunistic WiFi offloading
UR - http://www.scopus.com/inward/record.url?scp=84970024834&partnerID=8YFLogxK
U2 - 10.1109/TVT.2015.2437325
DO - 10.1109/TVT.2015.2437325
M3 - Article
AN - SCOPUS:84970024834
SN - 0018-9545
VL - 65
SP - 3813
EP - 3817
JO - IEEE Transactions on Vehicular Technology
JF - IEEE Transactions on Vehicular Technology
IS - 5
M1 - 7112504
ER -