An Implementation Design of a WLAN Handover Method Based on Cross-Layer Collaboration for TCP Communication
スポンサーリンク
概要
- 論文の詳細を見る
In order to prevent the degradation of TCP performance while traversing two WLANs, we present an implementation design of an inter-domain TCP handover method based on cross-layer and multi-homing. The proposed handover manager (HM) in the transport layer uses two TCP connections previously established via two WLANs (multi-homing) and switches the communication path between the two connections according to the handover trigger and the comparison of new/old APs. The handover trigger and comparison are conducted by assessing the wireless link quality using the frame-retry information obtained from the MAC layer (cross-layer). In a previous study, we proposed a preliminary concept for this method and evaluated its functional effectiveness through simulations. In the present study, we design an implementation considering a real system and then examine the effective performance in a real environment because a real system has several system constraints and suffers from fluctuations in an actual wireless environment. Indeed, depending on the cross-layer design, the implementation often degrades the system performance even if the method exhibits good functional performance. Moreover, the simple assessments of wireless link quality in the previous study indicated unnecessary handovers and inappropriate AP selection in a real environment. Therefore, we herein propose a new architecture that performs cross-layer collaboration between the MAC layer and the transport layer while avoiding degradation of system performance. In addition, we use a new assessment scheme of wireless link quality, i.e., double thresholds of frame retry and comparison of frame retry ratio, in order to prevent handover oscillation caused by fluctuations in the wireless environment. The experimental results demonstrate that the prototype system works well by controlling two TCP connections based on assessments of wireless link quality thereby achieving efficient inter-domain TCP handover in a real WLAN environment.
著者
-
Oie Yuji
Department Of Computer Science And Electronics Kyushu Institute Of Technology
-
Yamaguchi Suguru
Graduate School Of Information Science Nara Institute Of Science And Technology
-
Tsukamoto Kazuya
Department Of Computer Science And Electronics Kyushu Institute Of Technology
-
Kashihara Shigeru
Graduate School Of Information Science Nara Institute Of Science And Technology
-
Tsukamoto Kazuya
Department of Computer Science and Electronics, Kyushu Institute of Technology
-
Yamaguchi Suguru
Graduate School of Information Science, Nara Institute of Science and Technology
-
TAENAKA Yuzo
Information Technology Center, The University of Tokyo
関連論文
- Performance Evaluation of Channel Switching Scheme for Packet Data Transmission in Radio Network Controller(Mobile Radio)(Mobile Multimedia Communications)
- QoS Routing Algorithm Based on Multiclasses Traffic Load(Special Issue on New Technologies in the Internet and their Applications)
- SB-14-1 QoS Routing Algorithm based on Multi-classes Traffic Load
- Reducing Processor Usage on Heavily-Loaded Network Servers with POSIX Real-Time Scheduling Control(System Programs)
- Performance Analysis of Queue Length Distribution of Tandem Routers for QoS Measurement
- Performance Analysis of Flow Loss Probability and Link Utilization in MPLS Networks for Traffic Engineering(MPLS)(Internet Technology IV)
- Basic Trust Calculation to Prevent Spam in VoIP Network based on Call Duration : Single Hop Consideration
- Performance Study and Deployment Strategies on the Sender-Initiated Multicast(Internet Technology V)
- Multi-Path Transmission Algorithm for End-to-End Seamless Handover across Heterogeneous Wireless Access Networks(Mobile Networking)(Internet Technology IV)
- Proposal for Adaptive Bandwidth Allocation Using One-Way Feedback Control for MPLS Networks(Switching for Communications)
- End-to-end seamless handover using Multi-path transmission algorithm (インターネットコンファレンス2003論文集)
- Handover Management for VoWLAN Based on Estimation of AP Queue Length and Frame Retries
- Preliminary Field-Trial for QoS Routing and Dynamic SLA (Special Issue on Internet Technology)
- Proactive AP Selection Method Considering the Radio Interference Environment
- A Unified Handover Management Scheme Based on Frame Retransmissions for TCP over WLANs
- Improvement of Consistency among AS Policies in IRR Databases(Distributed System Operation and Management)
- Experimental Evaluation of Decision Criteria for WLAN Handover : Signal Strength and Frame Retransmission(Network)
- Performance Monitoring of VoIP Flows for Large Network Operations(New Challenge for Internet Technology and its Architecture)
- Real-Time IP Flow Measurement Tool with Scalable Architecture(Traffic Measurement and Analysis)(New Thechnologies and their Applications of the Internet)
- LI_015 Region Extraction with Cooperative Active Contours
- Transport Layer Mobility Management across Heterogeneous Wireless Access Networks(Network)
- New TCP Congestion Control Schemes for Multimodal Mobile Hosts(Terrestrial Radio Communications)
- Decentralized access point selection scheme considering communication characteristics for heterogeneous wireless LANs (情報ネットワーク)
- Delegated Validation System for Secure Authentication in WLAN Roaming
- Delegated Validation System for Secure Authentication in WLAN Roaming
- Cached Shortest-Path Tree : An Approach to Reduce the Influence of Intra-Domain Routing Instability(Network)
- Cached Shortest-Path Tree : An Approach to Reduced the Influence of Intra-Domain Routing Instability
- Replication Methods for Load Balancing on Distributed Storages in P2P Networks(Peer-to-Peer Network, New Technologies and their Applications of the Internet III)
- Lightweight Vulnerability Management System
- Lightweight Vulnerability Management System
- Hose Bandwidth Allocation Method to Achieve a Minimum Throughput Assurance Service for Provider Provisioned VPNs
- An Implementation Design of a WLAN Handover Method Based on Cross-Layer Collaboration for TCP Communication
- Improvement of Consistency among AS Policies in IRR Databases