Handoff performance improvement with latency reduction in next generation wireless networks

2005-05-01
The next generation (NG) wireless networks are expected to provide mobile users with the real-time multimedia services. High sensitivity to time constraints like delay and jitter is one of the important characteristics of the multimedia traffic. In order to maintain a certain quality of service (QoS) level, the handoff latency should be minimized. Furthermore, if the new cell is not ready at the actual handoff time, the handoff call may be even forced terminated. Hence, the handoff preparation latency directly affects the performance of the cellular networks in terms of QoS support and the handoff blocking probability. In this paper, we present the expected visitor list (EVL) method to achieve reduced handoff blocking probability and maintain a certain QoS level in the network by minimizing handoff preparation latency. The handoff signaling decomposition is introduced to make the neighbor cells aware of the resource demands and QoS requirements of the mobile terminal before the actual handoff time. The obtained information about the prospective active mobile terminal is stored in an EVL entry at the neighbor cells. The call admission control (CAC) with QoS-provisioning is run against each EVL entry. According to the CAC result, the network preparation algorithms are executed and the results are stored in the entry. No resource reservation or allocation is performed in advance, and the varying network conditions are reflected to validity and admission status of the entries. The results of handoff preparation algorithms stored in the EVL entry are activated at the actual handoff time and hence the handoff latency is minimized. Performance evaluation through mathematical analysis and extensive simulation experiments show that the EVL method reduces handoff latency and hence handoff call blocking probability significantly without introducing high overhead.
WIRELESS NETWORKS

Suggestions

ARC: The analytical rate control scheme for real-time traffic in wireless networks
Akan, OB; Akyildiz, IF (Institute of Electrical and Electronics Engineers (IEEE), 2004-08-01)
Next-generation wireless Internet (NGWI) is expected to provide a wide range of services including real-time multimedia to mobile users. However, the real-time multimedia traffic transport requires rate control deployment to protect shared Internet from unfairness and further congestion collapse. The transmission rate control method must also achieve high throughput and satisfy multimedia requirements such a delay or jitter bound. However, the existing solutions are mostly for the wired Internet, and hence,...
Mobile multi-access IP: a proposal for mobile multi-access management in future wireless IP networks
Altuntas, S; Baykal, Buyurman (Elsevier BV, 2005-03-15)
As the wireless networking technologies advance rapidly, providing mobile users with roaming freely in heterogeneous wireless access domains, the need for multi-access arises. This paper introduces the Mobile Multi-Access Management Architecture (MMA-IP) for IP-based future wireless networks. MMA-IP enables mobile users to utilize multiple access domains synchronously and to switch between different access domains. In order to handle multi-access operations, MMA-IP defines a new special mobility agent, call...
Cognitive-Node Architecture and a Deployment Strategy for the Future WSNs
Al-Turjman, Fadi (Springer Science and Business Media LLC, 2019-10-01)
The advent of sensing and communication technologies represents the next step in the evolution of wireless sensor networks (WSNs) and future applications. Future WSNs systems demand that connected devices could be able to work autonomously, while surfing on-line generated data and process them for self-decision making. Accordingly, we propose a cognitive Information-Centric Sensor Network (ICSN) framework. The fundamentals of cognition in ICSN can be recognized as a promising direction in addressing opportu...
Flow initiation in software defined networking
Soltani, Ahmad; Bazlamaçcı, Cüneyt Fehmi; Department of Information Systems (2014)
With today’s technology requirements, computer networks and specifically the Internet is being expected to provide mobile, distributed and constantly changing services to its users. Forwarding middle boxes used in the industry nowadays are configured to have their low-level switching operations (e.g. packet handling), tightly coupled to their high-level control definitions and algorithms. This fact has contributed in slowing down the innovation in computer networks. Software Defined Networking has recently ...
ML performance analysis of digital relaying in bi-directional relay channels
Ozdemir, Ozgur; Yılmaz, Ali Özgür (Wiley, 2012-06-01)
The research challenges to enhance the throughput of communication networks revealed the concept of network coding which is based on the idea of coding at packet level. The bi-directional relay channel in which two user terminals exchange independent information with the help of a relay terminal is among the prominent applications of network coding in wireless cooperative communications. In this paper, maximum likelihood (ML) performance analysis of digital relaying based bi-directional communication is pre...
Citation Formats
O. Akan and B. Baykal, “Handoff performance improvement with latency reduction in next generation wireless networks,” WIRELESS NETWORKS, pp. 319–332, 2005, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/38376.