FIWI ACCESS NETWORKS PDF

Cambridge Core – Communications and Signal Processing – FiWi Access Networks – by Martin Maier. The evolution of broadband access networks toward bimodal fiber-wireless (FiWi ) access networks, described in this book, may be viewed as the endgame of. This article provides an up-to-date survey of hybrid fiber-wireless (FiWi) access networks that leverage on the respective strengths of optical.

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Showing of 7 references. Proposed Scheme As explained in the earlier section, the existing DBA methods are not efficient because these methods cannot be used together with the utilization efficiency of the bandwidth and responsiveness for decreasing the transmission latency in the ONU.

Correia Optical Switching and Networking Showing of extracted citations. Let B avg be the average buffer data, then the future estimated rate is given as:. For instance, more communication hops can lead to increase in delay and decrease in throughput, and this QoS degradation may be noticed particularly in the wireless segment of a FiWi network.

A broader trend in the need to satisfy the QoS requirements of FiWi network users is delineated in the work in [19]. However, it is also observed that during active period of transmission considerable energy is consumed, which is the function of rate of data transmission. See our FAQ for additional information. Various criteria for adaptation of the data rate are proposed in literature. Similarly energy consumption for active state, sleep state and overall energy consumption for different fixed data rate schemes and EERAA is compared in fig.

Skip to search form Skip to main content. Fingerprint Passive optical networks. Rate adaptation algorithm is one of the popular approach which improves the network throughput even through the channel quality is assumed to be poor or there is a collision.

Cooperative QoS Control Scheme Based on Scheduling Information in FiWi Access Network

FiWi access network is supposed to be best the candidature for next generation broadband access networks. A capacity and delay analysis. The investigation from that work reported that the Risk-And-Delay-Aware Routing algorithm RADARin contrast with other routing protocols in the wireless side, exhibits the best QoS performance in terms of throughput, latency, and load balancing. Remote Antenna Unit The special and unique characteristics of FiWi broadband networks attract us to design a novel FiWi architecture with ability of providing end-to-end QoS connectivity for both wireless and optical subscribers.

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Proposed Algorithm Transmission on lower data rate consumes less energy as compared to higher data rate. Privacy Terms of Use. Therefore reduction in energy consumption due to more sleeping opportunity is not very significant. Another factor affecting active state energy consumption is P ac. A capacity and delay analysis”. It is observed that channel quality and offered traffic to the wireless network are important criteria which directly affect the network performance in terms of throughput [ 12 ].

Both ends may contribute for energy efficiency.

But none of the paper is utilizing rate adaptation for energy saving along with PSM. Let B avg be the average buffer data, then the future estimated rate is given as: This current link rate either increases or decreases from its current value according to the traffic arrival pattern. As a standard of the original His current research interests include the planning of next-generation optical-wireless converged access networks and architectures.

FiWi access network also desires the energy efficiency [ 3 ].

Fiber-wireless (FiWi) access networks: A survey

More data rate results in more active energy consumption but less transmission delay and vice versa. From This Paper Figures, tables, and topics from this paper.

So, we propose an efficient DBA scheme for decreasing the transmission latency in the ONU with high utilization efficiency of bandwidth. Cited By You do not have subscription access to this journal. He received the B. This website uses cookies to deliver some of our products and services as well as for analytics and to provide you a more personalized experience. References You do not have subscription access to this journal. He joined NTT Corporation, Kanagawa, Japan, inand mainly engaged in the research and development of optical transmission systems and devices for broadband access systems.

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This section presents the simulation results showing comparison of energy consumption for various fixed data rate schemes and EERAA. In most of the energy saving approaches used for front and back end sub-networks, the device will turn off their transceiver either fully or partially in idle state [ 4 ].

Skip to search form Skip to main content. The fixed latency refers to the duration between a reported frame and the transmitted frame.

It consists of two states; sleep and active state as shown in fig. In this way legacy PSM saves energy consumption by having the provision of sleep state.

Fiber-wireless (FiWi) access networks: A survey – Semantic Scholar

The work enumerates a number of important research challenges in FiWi environments, namely integrated channel assignment and bandwidth allocation, combined path selection, end-to-end QoS support, and so on. Rate adaptation criteria can be categorized in two parts: OLT to optical splitter link is referred as feeder fiber and splitter to ONU link is referred as distribution fiber.

Problem Formulation Subsection A deals with notations used to formulate problem domain. How to cite this article. Power consumption during sleep state T ac: Inhe joined NTT, where he has been engaged in the research and development of optical access systems.

It can be seen that the total energy consumed for data transmission at 54 Mbps scheme is maximum whereas it is minimum at 24Mbps scheme.