Performance Enhancement of the CSMA/CA MAC Mechanisms Using a Reject Request to Send (RRTS) Message for 3.5 GHz Shared Spectrum Systems

Youssef, Ziad; Majeed, Erfan; Mueck, Markus; Karls, Ingolf; Drewes, Christian; Bruck, Guido H.; Jung, Peter

doi:10.1109/wispnet.2018.8538708

Cited by 3 publications

(2 citation statements)

References 8 publications

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“…The coexisting LTE eNodeB (implemented using srsLTE) senses the radar transmission pattern to estimate radar rotation speed and pulse duration (equivalent to its 3 dB beamwidth) and mutes its transmissions accordingly (based on averaged values of period and on-duration) so that it would not transmit when a radar transmission is estimated. Paper [40] presents the design and results for a broadcast message termed reject the request to send (RRTS). The RRTS mechanism is used to overcome the problem of inefficient spectrum allocation among the CBRDs and 5G nodes.…”

Section: Delay Timementioning

confidence: 99%

A Survey on Citizens Broadband Radio Service (CBRS)

et al. 2022

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To leverage the existing spectrum and mitigate the global spectrum dearth, the Federal Communications Commission of the United States has recently opened the Citizens Broadband Radio Service (CBRS) spectrum, spanning 3550–3700 MHz, for commercial cognitive operations. The CBRS has a three-tier hierarchical architecture, wherein the incumbents, including military radars, occupy the topmost tier. The priority access licenses (PAL) and general authorized access (GAA) are second and third tier, respectively, facilitating licensed and unlicensed access to the spectrum. This combination of licensed and unlicensed access to the spectrum in a three-tier model has opened novel research directions in optimal spectrum sharing as well as privacy preservation, and hence, several schemes have been proposed for the same. This article provides a detailed survey of the existing literature on the CBRS. We provide an overview of the CBRS ecosystem and discuss the regulation and standardization process and industrial developments on the CBRS. The existing schemes for optimal spectrum sharing and resource allocation in CBRS are discussed in detail. Further, an in-depth study of the existing literature on the privacy of incumbents, PAL devices, and GAA devices in CBRS is presented. Finally, we discuss the open issues in CBRS, which demand more attention and effort.

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Section: Delay Timementioning

confidence: 99%

A Survey on Citizens Broadband Radio Service (CBRS)

et al. 2022

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“…The same authors in [27] considered the application of a broadcast message termed reject request to send (RRTS). This approach modifies the solution known in the IEEE 802.11 distributed coordination function (DCF) mechanism and adjust it for SAS to maximize the system throughput for GAA CBSDs operating in an unlicensed spectrum.…”

Section: B Related Workmentioning

confidence: 99%

Coordinated Spectrum Allocation and Coexistence Management in CBRS-SAS Wireless Networks

Kułacz¹,

Kryszkiewicz²,

Kliks³

et al. 2019

IEEE Access

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Since the introduction of the idea of cognitive radio, various approaches towards spectrum sharing have been considered, for example, the Licensed Shared Access (LSA), which is considered in Europe, or Citizens Broadband Radio Service (CBRS) with Spectrum Access System (SAS) regulated by the US. This paper deals with the problem of coordinated resource allocation among a set of available base stations. A detailed definition of the problem is provided, followed by a discussion on a set of heuristics proposed for solving the problem. Four solutions are presented that are based on existing standards as well as on the approaches described in the literature. Next, new multi-selection (multi-choice) algorithm is proposed and discussed in detail. The main problem is divided in two subproblems, which are solved by using graph theorem and analytical description. The performance of the proposed solutions is analyzed in various scenarios. Finally, a trade-off between power allocation and frequency use is provided. All challenges identified during the investigation of the problem are presented.

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EE-UWSNs: A Joint Energy-Efficient MAC and Routing Protocol for Underwater Sensor Networks

Alablani

Arafah

2022

JMSE

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In Underwater Sensor Networks (UWSNs), the energy sources of sensor nodes are limited and difficult to recharge and solar energy cannot be used in that environment. The power issue is one of the most significant constraints in underwater sensor networks and energy balancing is essential to prolong the network lifetime. The MAC/routing protocols that are used in other types of networks may not be suitable for UWSNs due to their unique characteristics. This paper aims to overcome the energy problem by developing a new MAC/routing protocol for UWSNs called the Energy-Efficient protocol for UWSNs (EE-UWSNs). It is based on five principles to save sensor energy and to prolong the lifetime of UWSNs. These principles are using finite levels of power, applying the multi-hops transmission, narrowing the scope of transmission, applying inactivation mode, and balancing energy consumption. Using the AUVNetSim simulator, which is a Python project developed by the Massachusetts Institute of Technology (MIT), the proposed EE-UWSNs protocol was compared with well-known protocols. Simulation results proved that the proposed protocol reduces the average energy consumption of sensors by up to 68.49% compared with the other protocols. Furthermore, the average number of collisions and the end-to-end delay are enhanced.

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Performance Enhancement of the CSMA/CA MAC Mechanisms Using a Reject Request to Send (RRTS) Message for 3.5 GHz Shared Spectrum Systems

Cited by 3 publications

References 8 publications

A Survey on Citizens Broadband Radio Service (CBRS)

A Survey on Citizens Broadband Radio Service (CBRS)

Coordinated Spectrum Allocation and Coexistence Management in CBRS-SAS Wireless Networks

EE-UWSNs: A Joint Energy-Efficient MAC and Routing Protocol for Underwater Sensor Networks

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