Service Class Resource Management for Green Wireless-Optical Broadband Access Networks (WOBAN)

Abstract

Exponential growth in the volume of wireless data, boosted by the growing popularity of mobile devices, such as smartphone and tablets, has forced the telecommunication industries to rethink the way networks are currently designed, and to focus on the development of high-capacity mobile broadband networks. In response to this challenge, researchers have been working toward the development of an integrated wireless optical broadband access network. Two major candidate technologies, which are currently known for their high capacity as well as quality of service (QoS) for multimedia traffic, are passive optical networks (PON), and fourth generation (4G) wireless networks. PON is a wired access technology, well known for its cost efficiency and high capacity; whereas 4G is a wireless broadband access technology, which has achieved broad market acceptance because of its ease of deployment, ability to offer mobility, and its cost efficiency. Integration of PON and 4G technologies in the form of wireless-optical broadband access networks, offers advantages, such as extension of networks in rural areas, support for mobile broadband services, and quick deployment of broadband networks. These two technologies however, have different design architectures for handling broadband services that require quality of service. For example, 4G networks use traffic classification for supporting different QoS demands, whereas the PON architecture has no such mechanism to differentiate between types of traffic. These two technologies also differ in their power saving mechanisms. In this paper, we propose a service class mapping for the integrated PON-4G network, which is based on the M/G/1 queuing model. We also propose a class-based power saving mechanism which significantly improves the sleep period for the integrated optical wireless unit, without compromising support for QoS. Results indicate that our proposed class-based power saving scheme reduces power consumption by up to 80%, and maintains the QoS within the requirements of the service level agreement.

Correlation-Based Energy Saving Approach for Smart Fiber Wireless Networks

“…The nature of the proposals in [5,24,26] is different from the previous ones. In [24] the authors propose the adoption of an optical burst switching (OBS)-like report generation mechanism in long-range Ethernet PONs (EPONs), and a dynamic bandwidth distribution solution, which improves energy saving by overcoming the delay penalty of sleep modes.…”

“…The approaches in [16][17][18][19][20][21][22][23], for example, focus on PONs in general and are not FiWi specific, while [5,9,12,[24][25][26][27][28] are FiWi related.…”

“…In [24] the authors propose the adoption of an optical burst switching (OBS)-like report generation mechanism in long-range Ethernet PONs (EPONs), and a dynamic bandwidth distribution solution, which improves energy saving by overcoming the delay penalty of sleep modes. In [26], a class-based power saving mechanism for PON-4G networks is proposed. In [5], the focus is also on fast/cyclic sleep, at ONUs that can be used at any time by the wireless section, and the focus is on finding the optimal sleep period for minimum energy consumption, which, according to the authors, is roundtrip-time (RTT) dependent.…”

Differential Service in a Bidirectional Radio-over-Fiber System over a Spectral-Amplitude-Coding OCDMA Network

“…These two issues have not been studied in previous research on SAC-based RoF. Due to the variant data traffics and diverse service types, scheduling algorithms on a wireless [5] and processing control scheme on an optical signal [6] is proposed to provide the requested quality of service (QoS). The optical control scheme is preferable because of its short processing time and low cost.…”

Full-standard broadcast DVB-T and wireless overlay on legacy and OFDM next-generation FTTH networks

“…Currently, the two most popular 4G technologies are following IEEE 802.16 and 3GPP standardization [7]. These signals are included in the bundle of OFDM-based signals used for the experimental demonstration of the integrated opticalwireless access network as depicted in Fig.…”