Management of Convergence Networks and Services
9th Asia-Pacific Network Operations and Management Symposium, APNOMS 2006 Busan, Korea, September 27-29, 2006 Proceedings

Items from 1 to 20 out of 87 results

chapter

QoS-Aware Fair Scheduling in Wireless Ad Hoc Networks with Link Errors

Muhammad Mahbub Alam, Md. Mamun-or-Rashid, Choong Seon Hong

Lecture Notes in Computer Science > Management of Convergence Networks and Services > Session 1: Management of Ad-Hoc and SensorNetworks > 1-10

To provide scheduling in wireless ad hoc networks, that is both highly efficient and fair in resource allocation, is not a trivial task because of the unique problems in wireless networks such as location dependent and bursty errors in wireless link. A packet flow in such a network may be unsuccessful if it experiences errors. This may lead to situations in which a flow receives significantly less...

chapter

Performance Analysis of Service Differentiation for IEEE 802.15.4 Slotted CSMA/CA

Meejoung Kim

Lecture Notes in Computer Science > Management of Convergence Networks and Services > Session 1: Management of Ad-Hoc and SensorNetworks > 11-22

In this paper, we propose two mechanisms, differentiation by backoff exponent and differentiation by the size of contention window, for IEEE 802.15.4 sensor networks to provide multi-level differentiated services in beacon-enabled mode with slotted CSMA/CA algorithm under non-saturation condition. Mathematical model based on discrete-time Markov chain is presented and analyzed to measure the performance...

chapter

Information-Driven Task Routing for Network Management in Wireless Sensor Networks

Yu Liu, Yumei Wang, Lin Zhang, Chan-hyun Youn

Lecture Notes in Computer Science > Management of Convergence Networks and Services > Session 1: Management of Ad-Hoc and SensorNetworks > 23-32

Wireless sensor networks (WSNs) consist of a large collection of small nodes providing collaborative and distributed sensing ability in unpredictable environments. Given their unattended nature, it is important for the routing algorithm in WSN to deal well with the node failures, resource depletion, and other abnormality. In this paper, an information-driven task routing (IDTR) is introduced for WSN...

chapter

Autonomic Management of Scalable Load-Balancing for Ubiquitous Networks

Toshio Tonouchi, Yasuyuki Beppu

Lecture Notes in Computer Science > Management of Convergence Networks and Services > Session 1: Management of Ad-Hoc and SensorNetworks > 33-42

In ubiquitous networks, a lot of sensors and RFID readers will be connected to the networks as well as PCs and mobile phones are connected, and huge numbers of transactions are expected to be issued by these devices. Since the loads caused by the transactions are getting increased gradually, it is difficult for system manager to estimate the required performance. The scalable load balancing method...

chapter

A Policy-Based Management Framework for Self-managed Wireless Sensor Networks

Jong-Eon Lee, Si-Ho Cha, Jae-Oh Lee, Seok-Joong Kang, more

Lecture Notes in Computer Science > Management of Convergence Networks and Services > Session 1: Management of Ad-Hoc and SensorNetworks > 43-52

This paper proposes a policy-based management framework for self-managed wireless sensor networks (WSNs) called SNOWMAN (SeNsOr netWork MANagement). In WSNs, a number of sensor nodes are deployed over a large area and long distances and multi-hop communication is required between nodes. So managing numerous wireless sensor nodes directly is very complex and is not efficient. The management of WSNs...

chapter

A Proposal of Large-Scale Traffic Monitoring System Using Flow Concentrators

Atsushi Kobayashi, Daisuke Matsubara, Shingo Kimura, Motoyuki Saitou, more

Lecture Notes in Computer Science > Management of Convergence Networks and Services > Session 2: Network Measurements and Monitoring > 53-62

In a large-scale backbone networks, the traffic monitoring system needs to receive a large volume of flow records, so if a single central collecting process is used, it might not be able to process all flow records. In this paper, we propose a method that achieves better scalability by using flow concentrators, which aggregate and distribute flow records. A flow concentrator is located between one...

chapter

Novel Traffic Measurement Methodology for High Precision Applications Awareness in Multi-gigabit Networks

Taesang Choi, Sangsik Yoon, Dongwon Kang, Sangwan Kim, more

Lecture Notes in Computer Science > Management of Convergence Networks and Services > Session 2: Network Measurements and Monitoring > 63-72

Traffic measurement research has focused on various aspects ranging from simple packet-based monitoring to sophisticated flow-based measurement and analysis. Especially, most recent research has tried to address limitations of simple flow-based monitoring by utilizing payload inspection for applications signatures or by identifying target application group based on common traffic characteristics....

chapter

Rate-Based and Gap-Based Available Bandwidth Estimation Techniques in Cross-Traffic Context

Wayman Tan, Marat Zhanikeev, Yoshiaki Tanaka

Lecture Notes in Computer Science > Management of Convergence Networks and Services > Session 2: Network Measurements and Monitoring > 73-81

Recent years have seen an increasing interest in end-to-end available bandwidth estimation. A number of estimation techniques and tools have been developed during the last few years. All of them can be classified into two models: rate-based and gap-based, according to the underlying approaches. The difference in characteristics of both models is studied in this paper. PathChirp and IGI are selected...

chapter

Signature-Aware Traffic Monitoring with IPFIX

Youngseok Lee, Seongho Shin, Taeck-geun Kwon

Lecture Notes in Computer Science > Management of Convergence Networks and Services > Session 2: Network Measurements and Monitoring > 82-91

Traffic monitoring is essential for accounting user traffic and detecting anomaly traffic such as Internet worms or P2P file sharing applications. Since typical Internet traffic monitoring tools use only TCP/UDP/IP header information, they cannot effectively classify diverse application traffic, because TCP or UDP port numbers could be used by different applications. Moreover, under the recent deployment...

chapter

Temporal Patterns and Properties in Multiple-Flow Interactions

Marat Zhanikeev, Yoshiaki Tanaka

Lecture Notes in Computer Science > Management of Convergence Networks and Services > Session 2: Network Measurements and Monitoring > 92-101

It is widely recognized that today’s Internet traffic is mostly carried by a relatively small number of elephant flows while mice flows constitute up to 80% of all active flows at any given moment in time. Although there are many research works that perform structural analysis of flows based on their size, rate, and lifespan, such analysis says very little about temporal properties of interactions...

chapter

A Profile Based Vertical Handoff Scheme for Ubiquitous Computing Environment

Chung-Pyo Hong, Tae-Hoon Kang, Shin-Dug Kim

Lecture Notes in Computer Science > Management of Convergence Networks and Services > Session 3: Mobility Management > 102-111

Specifically ubiquitous computing paradigm is based on seamless connectivity. And also to guarantee the seamless connectivity, an intelligent network management between heterogeneous network interfaces, called vertical handoff (VHO), should be designed. Besides, conventional VHO schemes are based on network information only, and do not provide any service manage-ment scheme for seamless service. For...

chapter

The Soft Bound Admission Control Algorithm for Vertical Handover in Ubiquitous Environment

Ok Sik Yang, Jong Min Lee, Jun Kyun Choi, Seong Gon Choi, more

Lecture Notes in Computer Science > Management of Convergence Networks and Services > Session 3: Mobility Management > 112-121

In this paper, we present SBAC (Soft Bound Admission Control) algorithm considering critical bandwidth ratio to reduce handover blocking probability over WLAN and WAAN (Wide Area Access Network). SBAC algorithm utilizes dynamically optimized resource allocation scheme to decrease the blocking probability of vertical handover connections within the limited capacity of system. Based on SBAC algorithm,...

chapter

Improving Handoff Performance by Using Distance-Based Dynamic Hysteresis Value

Huamin Zhu, Kyungsup Kwak

Lecture Notes in Computer Science > Management of Convergence Networks and Services > Session 3: Mobility Management > 122-131

In this study, an adaptive handoff algorithm with a dynamic hysteresis value, based on the distance between the mobile station and the serving base station, is proposed for cellular communications. Handoff probability is calculated to evaluate handoff algorithms analytically. The proposed handoff algorithm is compared with an algorithm with fixed hysteresis, an algorithm using both threshold and hysteresis,...

chapter

A Seamless Service Management with Context-Aware Handoff Scheme in Ubiquitous Computing Environment

Tae-Hoon Kang, Chung-Pyo Hong, Won-Joo Jang, Shin-Dug Kim

Lecture Notes in Computer Science > Management of Convergence Networks and Services > Session 3: Mobility Management > 132-141

Despite the importance of seamless connectivity in ubiquitous computing, research for seamless connectivity has not been considered properly. To provide seamless connectivity, this paper proposes an application execution model for seamless services with an intelligent context-aware handoff scheme based on context information, such as user intentions and application requirements as well as issues of...

chapter

Performance Analysis of an Adaptive Soft Handoff Algorithm for Mobile Cellular Systems

Huamin Zhu, Kyungsup Kwak

Lecture Notes in Computer Science > Management of Convergence Networks and Services > Session 3: Mobility Management > 142-151

In this paper, an adaptive soft handoff algorithm, which dynamically calculates the threshold values for soft handoff based on the received signal strength, is proposed for mobile cellular communication systems. An analytical model is developed to study the performance of soft handoff algorithms. Performance is evaluated in terms of the average number active set updates, the mean size of the active...

chapter

An Admission Control and Traffic Engineering Model for Diffserv-MPLS Networks

Haci A. Mantar

Lecture Notes in Computer Science > Management of Convergence Networks and Services > Session 4: QoS Management > 152-161

This paper presents a Bandwidth Broker (BB) based admission control and traffic engineering model for Diffserv supported MPLS networks. The proposed model uses a multi-path model in which several paths are pre-established between each ingress-egress router pair. As a central agent in each domain, the BB performs admission control on behalf of its entire domain via pre-established paths. The proposed...

chapter

An Admission Control and TXOP Duration of VBR Traffics in IEEE 802.11e HCCA with Guaranteed Delay and Loss

Tae Ok Kim, Yong Chang, Young-Tak Kim, Bong Dae Choi

Lecture Notes in Computer Science > Management of Convergence Networks and Services > Session 4: QoS Management > 162-169

We propose a new method to determine the optimal TXOP duration (TD) of scheduling algorithm for VBR traffics that guarantees delay and loss probability in IEEE 802.11e HCCA. In this algorithm, the TXOP Duration for each Traffic Stream (TS) is determined by the number (N) of packets to be transmitted during a TXOP duration, which is found by analyzing M/D ^N/1/N×l queueing...

chapter

NETSAQ: Network State Adaptive QoS Provisioning for MANETs

Shafique Ahmad Chaudhry, Faysal Adeem Siddiqui, Ali Hammad Akbar, Ki-Hyung Kim

Lecture Notes in Computer Science > Management of Convergence Networks and Services > Session 4: QoS Management > 170-179

The provision of ubiquitous services in Mobile Ad-hoc Networks (MANETs) is a great challenge, considering the bandwidth, mobility, and computational-resources constraints exhibited by these networks. Incorporation of modern delay-sensitive applications has made the task even harder. The traditional Quality of Service (QoS) provisioning techniques are not applicable on MANETs because such networks...

chapter

End-to-End QoS Guaranteed Service in WLAN and 3GPP Interworking Network

Sung-Min Oh, Jae-Hyun Kim, You-Sun Hwang, Hye-Yeon Kwon, more

Lecture Notes in Computer Science > Management of Convergence Networks and Services > Session 4: QoS Management > 180-189

In this paper, we model the end-to-end QoS provisioning mechanisms in the WLAN and 3GPP interworking network. For the end-to-end QoS guaranteed service, we model the control plane and user plane considering the WLAN and 3GPP interworking network. And we propose the QoS parameter/class mapping and DPS packet scheduler. By the simulation results, DPS can provide the low end-to-end delay of voice traffic,...

chapter

Network-Adaptive QoS Routing Using Local Information

Jeongsoo Han

Lecture Notes in Computer Science > Management of Convergence Networks and Services > Session 4: QoS Management > 190-199

In this paper, we propose the localized adaptive QoS routing scheme using POMDP(partially observable Markov Decision Processes) and Exploration Bonus. In order to deal with POMDP problem, we use CEA(Certainty Equivalency Approximation) technique that involves using the mean value of random variables, since it is intractable to determine the optimal solution. And we present a new path selection using...

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INFONA - science communication portal

Management of Convergence Networks and Services
9th Asia-Pacific Network Operations and Management Symposium, APNOMS 2006 Busan, Korea, September 27-29, 2006 Proceedings

QoS-Aware Fair Scheduling in Wireless Ad Hoc Networks with Link Errors

Performance Analysis of Service Differentiation for IEEE 802.15.4 Slotted CSMA/CA

Information-Driven Task Routing for Network Management in Wireless Sensor Networks

Autonomic Management of Scalable Load-Balancing for Ubiquitous Networks

A Policy-Based Management Framework for Self-managed Wireless Sensor Networks

A Proposal of Large-Scale Traffic Monitoring System Using Flow Concentrators

Novel Traffic Measurement Methodology for High Precision Applications Awareness in Multi-gigabit Networks

Rate-Based and Gap-Based Available Bandwidth Estimation Techniques in Cross-Traffic Context

Signature-Aware Traffic Monitoring with IPFIX

Temporal Patterns and Properties in Multiple-Flow Interactions

A Profile Based Vertical Handoff Scheme for Ubiquitous Computing Environment

The Soft Bound Admission Control Algorithm for Vertical Handover in Ubiquitous Environment

Improving Handoff Performance by Using Distance-Based Dynamic Hysteresis Value

A Seamless Service Management with Context-Aware Handoff Scheme in Ubiquitous Computing Environment

Performance Analysis of an Adaptive Soft Handoff Algorithm for Mobile Cellular Systems

An Admission Control and Traffic Engineering Model for Diffserv-MPLS Networks

An Admission Control and TXOP Duration of VBR Traffics in IEEE 802.11e HCCA with Guaranteed Delay and Loss

NETSAQ: Network State Adaptive QoS Provisioning for MANETs

End-to-End QoS Guaranteed Service in WLAN and 3GPP Interworking Network

Network-Adaptive QoS Routing Using Local Information

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Management of Convergence Networks and Services
9th Asia-Pacific Network Operations and Management Symposium, APNOMS 2006 Busan, Korea, September 27-29, 2006 Proceedings