On the Challenges for the Maximization of Radio Resources Usage in WiMAX Networks

Pérez-Costa, Xavier; Favaro, Paolo; Zubow, Anatolij; Camps, D.; Aráuz, Julio

doi:10.1109/ccnc08.2007.208

Cited by 14 publications

(16 citation statements)

References 6 publications

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“…Nevertheless, the authors do not provide details about how to map the resources to unused spaces if their sizes are over multiple rows. The authors of [9] focused on the study of the impact of the performance of a WiMAX OFDMA base station DL-MAP packing algorithm on the overall system performance and proposed a downlink scheduler that balanced efficiency with execution time. Work in [10] investigated the downlink burst allocation problem in IEEE 802.16 OFDMA system and two channel-aware schemes were proposed for BS to allocate downlink bursts to SSs with high subchannel utilization and network throughput.…”

Section: Related Work On Mappingmentioning

confidence: 99%

A novel fair mapping scheme for IEEE 802.16 downlink sub-frame

Sarigiannidis

Louta

2010

International Congress on Ultra Modern Telecommunications and Control Systems

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A novel fair mapping scheme is proposed in this paper for the IEEE 802.16 downlink sub-frame. The mapping process is critical since it allocates the users' requests into the downlink subframe in order to be sent to the mobile stations. One of the most noticeable issues in this area lies on the fairness aspect. Giving that the mapping process defines the order and the way that the users' requests are being serviced, some users may be treated unfairly. In this work this issue is considered and a new mapping scheme is introduced. The proposed scheme encloses fair and more efficient mapping process, compared to the leading scheme, according to the presented simulation results.

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Section: Related Work On Mappingmentioning

confidence: 99%

A novel fair mapping scheme for IEEE 802.16 downlink sub-frame

Sarigiannidis

Louta

2010

International Congress on Ultra Modern Telecommunications and Control Systems

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“…16 WiMAX system incorporates four alternate physical specifications operating in different frequencies. These include the WirelessMAN-SC, the WirelessMAN-SCa, the WirelessMAN-OFDM, and the WirelessMAN-OFDMA.…”

Section: Ofdma Technique and Intra-frame Bandwidth Allocation Fundamementioning

confidence: 99%

“…A number of interesting mapping schemes (e.g., [13][14][15]) have been proposed in related research literature. In the context of this work, Simple Packing Algorithm (SPA) [16], the simplest dynamic mapping algorithm, is adopted in order to explore and provide clear insights on the intra-frame power reduction capabilities.…”

Section: Intra-frame Power Capabilities and Related Effortsmentioning

confidence: 99%

“…Vertical SPA is a fast and easy to implement mapping technique for assigning OFDMA slots provided by the rectangular structured 802.16 sub-frame for downlink transmissions to user bandwidth requests [16]. Because of its low requirements in processing resources, it can be efficiently programmed along with the scheduler into the hardware of any WiMAX BS.…”

Section: Energy Conservation In Vertical Spamentioning

confidence: 99%

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On analyzing the intra-frame power saving potentials of the IEEE 802.16e downlink vertical mapping

2013

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Article:Lagkas, T.D. orcid.org/0000-0002-0749-9794, Sarigiannidis, P. and Louta, M. (2013) On analyzing the intra-frame power saving potentials of the IEEE 802.16e downlink vertical mapping. Computer Networks, 57 (7 AbstractWorldwide Interoperability for Microwave Access (WiMAX) is generally considered as a competitive candidate networking technology for the realization of the 4G vision. Among the key factors towards its successful and widespread deployment are the effective support of mobility and the provision of mechanisms for enabling service access at a high quality level in an efficient and cost-effective manner. Nonetheless, this effort should take into account and adequately address strict and severe energy limitations that the mobile devices are currently facing. Power saving constitutes an issue of vital importance, as mobile terminals continue to incorporate more and more functionalities and energy-hungry features in order to support the ever increasing user requirements and demands. The standard employs variations of power saving classes in a frame-to-frame basis, while recent power saving mechanisms proposed in related research literature limit their activity in whole frames, neglecting, thus, the intra-frame power saving capabilities. In this work, the intra-frame energy conservation potentials of the mobile WiMAX network are studied and a novel analytical approach is provided, focusing on the downlink direction where the bandwidth allocation involves idle intervals and dynamic inactivity periods. Specifically, we endeavour to accurately analyse the potential energy conservation capabilities in an intra-frame point of view, applying the well-known simple packing algorithm to distribute the available bandwidth to the various subscribers. Our analytical -2 -findings are thoroughly cross-validated via simulation, providing clear insights into the intraframe energy reduction capabilities.

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“…Bearing in mind that the downlink mapping operation dramatically influences the efficiency of the OFDMA-based systems [9], in this study, we endeavor to cover this gap by providing a rigorous analytical approach studying the performance of the IEEE 802.16e systems with respect to downlink sub-frame dimensions and the number of connected subscribers. Simple Packing Algorithm (SPA) [10], a very common downlink mapping algorithm is adopted as the main allocation policy that simply creates allocation rectangles to provide full support of the various downlink requests. The remainder of this paper is organized as follows.…”

Section: Introductionmentioning

confidence: 99%

Analyzing the Mobile WiMAX System Resource Exploitation of the Downlink Direction

Λάγκας¹,

Sarigiannidis

Louta

2013

Wireless Pers Commun

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Worldwide Interoperability for Microwave Access (WiMAX) constitutes a viable networking technology, providing wireless connectivity in an efficient manner. In this work, on the grounds of the defined frame structure, a novel performance analysis of the mobile WiMAX standard in terms of the downlink resource utilization is presented. The analysis is validated via simulation, the results of which are also provided along with numerical results, studying the effectiveness of the OFDMA-based downlink mapping. The results reveal the relationship among the frame dimensions, the mapped request size, and the number of unexploited OFDMA slots.

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On the Challenges for the Maximization of Radio Resources Usage in WiMAX Networks

Cited by 14 publications

References 6 publications

A novel fair mapping scheme for IEEE 802.16 downlink sub-frame

A novel fair mapping scheme for IEEE 802.16 downlink sub-frame

On analyzing the intra-frame power saving potentials of the IEEE 802.16e downlink vertical mapping

Analyzing the Mobile WiMAX System Resource Exploitation of the Downlink Direction

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