User-Oriented Handoff Management in a Cooperative Heterogeneous Wireless Network
Date Issued
2009
Date
2009
Author(s)
Abstract
Employing multiple radio access technologies such as WiMAX, HSDPA and Wi-Fi in a mobile network to provide users with more cost-effective communication services has long been a vision of many service network providers. In this thesis, we propose a novel user-decided service model for a cooperative wireless network in which the radio resources of multiple wireless networks are collectively managed. Under the model, users are provided with multiple service options with different levels of service quality and charges. It is up to users to choose the most suitable service option (and access network) based on their personal preference and the amount of money they are willing to pay. We use a video streaming service in a WiMAX/HSDPA network as an example to illustrate the key concepts and resource management of our approach. The results of simulation show that, under the model, the service network can accommodate more users and provide higher user satisfaction than the traditional network-decided service model. It can also achieve higher resource utilization and revenues. This demonstrates the importance of defining the concept of user-decided service model in a cooperative heterogeneous networking environment. t is necessary to investigate the technical feasibility of performing vertical handoff between heterogeneous networks one of the important roaming scenarios under such a service model. Based on the user-decided service model, we design an operation model to enable effective and seamless switching from one network to another. We take the HSDPA and WiMAX as example in this work, and the simulation result show that the operation model lowers the handoff latency, avoid the packet loss, and the service level is guaranteed.
Subjects
3.5G
802.16
resource management
handoff
mobility
seamless
QoS
File(s)![Thumbnail Image]()
Loading...
Name
ntu-98-R95725049-1.pdf
Size
23.32 KB
Format
Adobe PDF
Checksum
(MD5):a59c9f0dda2fa44546c91d5d3c036496