Design and analysis of channel reservation scheme in Cognitive Radio Networks

Chakraborty, Tamal; Misra, Iti Saha

doi:10.1016/j.compeleceng.2014.11.006

Cited by 14 publications

(8 citation statements)

References 22 publications

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“…Channel reservation policies have been proposed for improving spectrum utilization in CRNs by considering both PUs and SUs. In [23], a PU based channel reservation policy is applied to a CRN where a suitable number of channels are initially reserved for PUs. As long as the CRN has available reserved channels, the PUs cannot occupy the unreserved channels.…”

Section: A Related Workmentioning

confidence: 99%

Dynamic Spectrum Reservation for CR Networks in the Presence of Channel Failures: Channel Allocation and Reliability Analysis

Balapuwaduge

Pla

2018

IEEE Trans. Wireless Commun.

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Providing channel access opportunities for new service requests and guaranteeing continuous connections for ongoing flows until service completion are two challenges for service provisioning in wireless networks. Channel failures, which are typically caused by hardware and software failures or/and by intrinsic instability in radio transmissions, can easily result in network performance degradation. In cognitive radio networks (CRNs), secondary transmissions are inherently vulnerable to connection breaks due to licensed users' arrivals as well as channel failures. To explore the advantages of channel reservation on performance improvement in error-prone channels, we propose and analyze a dynamic channel reservation (DCR) algorithm and a dynamic spectrum access (DSA) scheme with three access privilege variations. The key idea of the DCR algorithm is to reserve a dynamically adjustable number of channels for the interrupted services to maintain service retainability for ongoing users or to enhance channel availability for new users. Furthermore, the DCR algorithm is embedded in the DSA scheme enabling spectrum access of primary and secondary users with different access privileges based on access flexibility for licensed shared access. The performance of such a CRN in the presence of homogeneous and heterogeneous channel failures is investigated considering different channel failure and repair rates.

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Section: A Related Workmentioning

confidence: 99%

Dynamic Spectrum Reservation for CR Networks in the Presence of Channel Failures: Channel Allocation and Reliability Analysis

Balapuwaduge

Pla

2018

IEEE Trans. Wireless Commun.

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“…SU L can access both reserved and non-reserved bands. Previous studies have assumed that reserved bands are solely occupied either by PUs or by SUs [27], [29]. ESU is more flexible in this respect and grants unconditional and direct access to SU L for both the reserved and non-reserved bands.…”

Section: Related Workmentioning

confidence: 99%

Spectrum efficiency in CRNs using hybrid dynamic channel reservation and enhanced dynamic spectrum access

Khan

Abbas

et al. 2020

Ad Hoc Networks

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“…Channel access for potential secondary users and new users is optimized by reserving a certain number of sub-channels as presented in [183]. We introduce multi-step channel reservation into a multi-channel MAC in [184]- [187].…”

Section:  Space Reservation Based On Dynamic Reservation Rangementioning

confidence: 99%

Survey and Performance Evaluation of the Upcoming Next Generation WLANs Standard - IEEE 802.11ax

Yang

et al. 2019

Mobile Netw Appl

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With the ever-increasing demand for wireless traffic and quality of serives (QoS), wireless local area networks (WLANs) have developed into one of the most dominant wireless networks that fully influence human life. As the most widely used WLANs standard, Institute of Electrical and Electronics Engineers (IEEE) 802.11 will release the upcoming next generation WLANs standard amendment: IEEE 802.11ax. This article comprehensively surveys and analyzes the application scenarios, technical requirements, standardization process, key technologies, and performance evaluations of IEEE 802.11ax. Starting from the technical objectives and requirements of IEEE 802.11ax, this article pays special attention to high-dense deployment scenarios. After that, the key technologies of IEEE 802.11ax, including the physical layer (PHY) enhancements, multi-user (MU) medium access control (MU-MAC), spatial reuse (SR), and power efficiency are discussed in detail, covering both standardization technologies as well as the latest academic studies. Furthermore, performance requirements of IEEE 802.11ax are evaluated via a newly proposed systems and link-level integrated simulation platform (SLISP). Simulations results confirm that IEEE 802.11ax significantly improves the user experience in high-density deployment, while successfully achieves the average per user throughput requirement in project authorization request (PAR) by four times compared to the legacy IEEE 802.11. Finally, potential advancement beyond IEEE 802.11ax are discussed to complete this holistic study on the latest IEEE 802.11ax. To the best of our knowledge, this article is the first study to directly investigate and analyze the latest stable version of IEEE 802.11ax, and the first work to thoroughly and deeply evaluate the compliance of the performance requirements of IEEE 802.11ax.

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Design and analysis of channel reservation scheme in Cognitive Radio Networks

Cited by 14 publications

References 22 publications

Dynamic Spectrum Reservation for CR Networks in the Presence of Channel Failures: Channel Allocation and Reliability Analysis

Dynamic Spectrum Reservation for CR Networks in the Presence of Channel Failures: Channel Allocation and Reliability Analysis

Spectrum efficiency in CRNs using hybrid dynamic channel reservation and enhanced dynamic spectrum access

Survey and Performance Evaluation of the Upcoming Next Generation WLANs Standard - IEEE 802.11ax

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