Networking - ICN 2005 : 4th International Conference on Networking, Reunion Island, France, April 17-21, 2005 : proceedings
0
Citation
0
Reference
20
Related Paper
Cite
A preliminary version of this paper appeared in
Provisioning
Cite
Citations (4)
Due to a continued increase in the speed and capacities of computing devices, combined with our society's growing need for mobile communication capabilities, multihop wireless networks (MWNs), such as wireless mesh networks (WMNs), have gained a lot of interest from the research community. Quality of service (QoS) provisioning in these networks is an essential component that is needed to support multimedia and real-time applications. On the other hand, directional antenna technology provides the capability for considerable increases in spatial reuse, which is essential in the wireless medium. In this paper, a bandwidth reservation protocol for QoS routing in TDMA-based MWNs using directional antennas is presented. The routing algorithm allows a source node to reserve a path to a particular destination with the needed bandwidth, which is represented by the number of slots in the data phase of the TDMA frame. Further optimizations to improve the efficiency and resource utilization of the network are also provided.
Cite
Citations (20)
The emergence of nomadic applications have generated a lot of interest in wireless network infrastructures which support multimedia services. We propose a bandwidth routing algorithm for multimedia support in a multihop wireless network. This network can be interconnected to wired networks (e.g. ATM or the Internet) or stand alone. Our bandwidth routing includes bandwidth calculation and reservation schemes. Under such a routing algorithm, we can derive a route to satisfy the bandwidth requirement for the QoS constraint. At a source node, the bandwidth information can be used to decide to accept a new call or not immediately. This is specially important to carry out a fast handoff when interconnecting to an ATM backbone infrastructure. It enables an efficient call admission control. The simulation results show that the bandwidth routing algorithm is very useful in extending the ATM virtual circuit service to the wireless network. Different types of QoS traffic can be integrated in such a dynamic radio network with high performance.
Call Admission Control
Bandwidth management
Dynamic Bandwidth Allocation
Cite
Citations (60)
During the past few years, wireless mesh networks have drawn significant attention from academia and industry as a fast, easy, and inexpensive solution for broadband wireless access. In WMNs it is important to support video communications in an efficient way. To address this issue, this article studies the multipath routing for multiple description video delivery over IEEE 802.11-based WMNs. Specifically, we first design a framework to transmit MD video over WMNs through multiple paths. We then investigate the technical challenges encountered in the framework. To overcome these challenges, we develop an enhanced version of a guaranteed rate packet scheduling algorithm, virtual reserved rate GR, to shorten the packet delay of video communications in multiservice network environments. Our simulation study shows that the proposed approach can reduce the latency of video delivery and achieve good performance of traffic engineering across a WMN.
Multipath routing
Cite
Citations (7)
Emerging applications in automation, medical imaging, traffic monitoring and surveillance need real-time data transmission over Wireless Sensor Networks (WSNs). Guaranteeing Quality of Service (QoS) for real-time traffic over WSNs creates new challenges. Rapid penetration of smart devices, standardization of Machine Type Communications (MTC) in next generation 5G wireless networks have added new dimensions in these challenges. In order to satisfy such precise QoS constraints, in this paper, we propose a new cross-layer QoS-provisioning strategy in Wireless Multimedia Sensor Networks (WMSNs). The network layer performs statistical estimation of sensory QoS parameters. Identifying QoS-routing problem with multiple objectives as NP-complete, it discovers near-optimal QoS-routes by using evolutionary genetic algorithms. Subsequently, the Medium Access Control (MAC) layer classifies the packets, automatically adapts the contention window, based on QoS requirements and transmits the data by using routing information obtained by the network layer. Performance analysis is carried out to get an estimate of the overall system. Through the simulation results, it is manifested that the proposed strategy is able to achieve better throughput and significant lower delay, at the expense of negligible energy consumption, in comparison to existing WMSN QoS protocols.
Provisioning
Cite
Citations (4)
Wireless multimedia sensor networks have captured the attention of many due to their portability and their easy access in hard-to-access areas. They consist of a group of sensor nodes with their own transceiver and power source. The optimal connection and structure of these components allows the wireless multimedia sensor network to effectively measure and sense the physical characteristics of the environment in which they are being deployed. Their applications may vary from video surveillance, real-time traffic control systems, military applications and advanced health care delivery and other medical applications. Power, energy, frequency and voltage are the significant parameters for the Wireless Multimedia Sensors Networks. The main idea of this paper is to propose a node-level optimal Real-Time priority based Dynamic scheduling algorithm that schedules tasks according to their priorities by increasing or decreasing the frequency, using dynamic voltage frequency scaling and hence makes efficient use of energy. The Priority based scheduling helps in achieving Quality of Service (QoS) for delay sensitive traffic.
Software portability
Frequency scaling
Sensor node
Cite
Citations (12)
In the heterogeneous wireless networks, the optimal network selection problem is one of the key issues. QoS aware path selection scheme is proposed in this paper, which estimates required bandwidth ratio based on the QoS requirements of target service and the SINR of each path. The proposed scheme can select the optimal path which can satisfy the QoS requirements among many heterogeneous wireless networks that change dynamically. The proposed scheme can also support multiple path selection as well as single path selection.
Heterogeneous wireless network
Cite
Citations (20)
Wireless mesh networks (WMNs) are emerging as a promising technology for backhauling data traffic from wireless access networks to the wired Internet. Such networks are expected to support various types of applications with different quality of service (QoS) requirements. In this paper, we provide a complete cross-layer solution for WMNs together with its OPNET simulation architecture that comprises client, server and mesh router models spanning all layers from physical to application. Different TCP algorithm and techniques are implemented on top of a novel joint multi-constrained QoS routing and opportunistic scheduling scheme and their interaction and performance is evaluated through extensive simulations.
Cite
Citations (1)
In this chapter we present an energy-efficient highly adaptive network interface architecture and a novel data link layer protocol for wireless networks that provides Quality of Service (QoS) support for diverse traffic types. Due to the dynamic nature of wireless networks, adaptations in bandwidth scheduling and error control are necessary to achieve energy efficiency and an acceptable quality of service. In our approach we apply adaptability through all layers of the protocol stack, and provide feedback to the applications. In this way the applications can adapt the data streams, and the network protocols can adapt the communication parameters.
Protocol stack
Adaptability
Data link layer
Cite
Citations (0)