Session state aware handover procedure for VoIP sessions in heterogeneous wireless networks

Masri, Mohamed Ammar Al; Sesay, A.B.; Fapojuwo, Abraham O.

doi:10.1109/wcnc.2014.6952961

Cited by 6 publications

(3 citation statements)

References 10 publications

(17 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…While the UEs move with high mobility under the LiFi APs, they may experience a series of return association to LiFi and LTE/WiFi RF APs, resulting in a ping-pong process. In real-time VH operations, the packet loss is caused due to the time waiting for the transmission and reception of signalling messages associated with network discovery and handover management procedures [59]. This mainly explains the higher delay and lower throughput of traffic flows/packets under high mobility in Fig.…”

Section: Simulation and Resultsmentioning

confidence: 99%

Software-Defined Networking-Enabled Heterogeneous Wireless Networks and Applications Convergence

Alshaer

Haas

2020

IEEE Access

View full text Add to dashboard Cite

A software-defined networking (SDN) architecture is capable of integrating all radio frequency and optical wireless small cell networks (e.g. fifth generation (5G), long-term evolution (LTE) femtocell, wireless fidelity (WiFi), light fidelity (LiFi)) in one network domain. This paper considers a SDN-enabled heterogeneous network (HetNet) comprised of LiFi, LTE femtocell and WiFi access points (APs). The HetNet control plane maintains the state of the network topology and wireless resources, which can support the development of intelligent service provisioning and efficient data communications in x generation (x G) wireless networks. The SDN applications use the network state to provide services in the data plane. However, when the state of network and wireless resources constantly changes, the SDN applications cannot provide reliable and guaranteed services to the wireless user equipments. This paper develops a queuing theoretic framework, which provides a performance evaluation for the SDN-enabled HetNet and applications convergence. A traffic engineering (TE) scheme is developed to support dynamic agnostic downlink flows routing to APs and differentiated granular services across the HetNet. Network and user centric policies are developed to make applications aware of network resource availability on the northbound and southbound interfaces of a SDN controller. Numerical models are introduced to study the impact of the computation and communication resources of northbound and southbound interfaces on the SDN-enabled HetNet scalability and the quality-of-service (QoS) guarantee of applications. Also, simulation scenarios are conducted to evaluate the performance of the TE scheme in provisioning effective and reliable services for subscribers. INDEX TERMS SDN controller, traffic engineering, heterogeneous wireless networks, QoS, LiFi, VLC, WiFi, LTE, software agents, 5G. I. INTRODUCTION Visible light communication (VLC) systems and light fidelity (LiFi) attocellular networks have been technologically enhanced to support high data rate point-to-point (p2p) and multiuser wireless communications [1]. Radio and optical wireless access points (APs) can coexist and operate in a small cell network without causing interference to each other, as shown in Fig. 1. Next generation small cell networks are expected to have more APs and utilize 200x more spectrum than the fourth generation (4G), which can support the The associate editor coordinating the review of this manuscript and approving it for publication was Wei Wei.

show abstract

Section: Simulation and Resultsmentioning

confidence: 99%

Software-Defined Networking-Enabled Heterogeneous Wireless Networks and Applications Convergence

Alshaer

Haas

2020

IEEE Access

View full text Add to dashboard Cite

show abstract

“…As subjective testing is expensive and time consuming, a conversion formula is provided in [9], which converts R values to MOS values and some important thresholds are highlighted in Table II. Typically, from a QoS perspective a MOS of 3.6 or higher is considered as satisfactory for a VoIP session to be valid [16]. Thus, in this work, the capacity of the network is calculated counting the number of VoIP session with a MOS equal or higher than this threshold.…”

Section: A Simulation Settingsmentioning

confidence: 99%

DAPP: A Delay-Aware Packet Prioritisation scheme for VoIP in wireless multi-hop networks

Olariu

Hava

2016

2016 9th IFIP Wireless and Mobile Networking Conference (WMNC)

View full text Add to dashboard Cite

Abstract-In this paper we propose a mechanism entitled Delay-Aware Packet Prioritisation (DAPP) that works at WiFi packet queue level. DAPP enqueues packets according to their time spent in the network, such that more delayed packets are enqueued towards the head of the queue. We study the effects of such an approach in wireless multi-hop scenarios where VoIP packets with various delay impairments reach a congested node. Packets' delay builds up as congestion increases and we show that DAPP improves a network's VoIP capacity by distributing the negative effects of delay to those VoIP packets that so far travelled in good network conditions. This is to the advantage of those VoIP packets already negatively affected by network conditions, as they are allowed to pass a congested node with less further delay accumulation. We use extensive NS-3 simulations where a wide range of network impairments affect VoIP calls, and we demonstrate that DAPP is able to improve the VoIP capacity and fairness among VoIP calls in a wireless multi-hop network.

show abstract

“…A separate method to using probability analysis to improve the handover is proposed by M. Al Masri et al [17]. In their approach, they use a Markov model to probabilistically model the session activity, and then use this information to determine the best moment to conduct the handover.…”

Section: Probability Analysismentioning

confidence: 99%

Predictive mobile IP handover for vehicular networks

Magnano

Xin

Boukerche

2015

2015 IEEE 40th Conference on Local Computer Networks (LCN)

View full text Add to dashboard Cite

Vehicular networks are an emerging technology that offer potential for providing a variety of new services. However, extending vehicular networks to include IP connections is still problematic, due in part to the incompatibility of mobile IP handovers with the increased mobility of vehicles. The handover process, consisting of discovery, registration, and packet forwarding, has a large overhead and disrupts connectivity. With increased handover frequency and smaller access point dwell times in vehicular networks, the handover causes a large degradation in performance. This thesis proposes a predictive handover solution, us-

show abstract

Session state aware handover procedure for VoIP sessions in heterogeneous wireless networks

Cited by 6 publications

References 10 publications

Software-Defined Networking-Enabled Heterogeneous Wireless Networks and Applications Convergence

Software-Defined Networking-Enabled Heterogeneous Wireless Networks and Applications Convergence

DAPP: A Delay-Aware Packet Prioritisation scheme for VoIP in wireless multi-hop networks

Predictive mobile IP handover for vehicular networks

Contact Info

Product

Resources

About