Search

Your search keyword '"IEEE 802.22"' showing total 317 results
Start Over Descriptor "IEEE 802.22"

Refine your results

more »

more »

more »
317 results on '"IEEE 802.22"'

301. IEEE 802.22: the first worldwide wireless standard based on cognitive radios

Author

N. Sai Shankar, Dagnachew Birru, Carlos Cordeiro, and Kiran Challapali

Subjects
Engineering, IEEE 802.22, Cognitive radio, business.industry, PHY, Air interface, Physical layer, Wireless, Access control, business, Telecommunications, Dynamic spectrum management, Computer network
Abstract

In November/2004, we witnessed the formation of the first worldwide effort to define a novel wireless air interface standard based on cognitive radios (CRs): the IEEE 802.22 working group (WG). The IEEE 802.22 WG is chartered with the development of a CR-based wireless regional area network (WRAN) physical (PHY) and medium access control (MAC) layers for use by license-exempt devices in the spectrum that is currently allocated to the television (TV) service. Since 802.22 is required to reuse the fallow TV spectrum without causing any harmful interference to incumbents (i.e., the TV receivers), cognitive radio techniques are of primary importance in order to sense and measure the spectrum and detect the presence/absence of incumbent signals. On top of that, other advanced techniques that facilitate coexistence such as dynamic spectrum management and radio environment characterization could be designed. In this paper, we provide a detailed overview of the 802.22 architecture, its requirements, applications, and coexistence considerations that not only form the basis for the definition of this groundbreaking wireless air interface standard, but that will also serve as foundation for future research in the promising area of CRs

Published
2005
Full Text
View/download PDF

302. Fuzzy-based spectrum handoff in cognitive radio networks crowncom

Author

Universitat Politècnica de Catalunya. Departament de Teoria del Senyal i Comunicacions, Universitat Politècnica de Catalunya. GRCM - Grup de Recerca en Comunicacions Mòbils, Universitat Politècnica de Catalunya. A&MP - Grup de Processament d'Arrays i Sistemes Multicanal, Giupponi, Lorenza, Pérez Neira, Ana Isabel, Universitat Politècnica de Catalunya. Departament de Teoria del Senyal i Comunicacions, Universitat Politècnica de Catalunya. GRCM - Grup de Recerca en Comunicacions Mòbils, Universitat Politècnica de Catalunya. A&MP - Grup de Processament d'Arrays i Sistemes Multicanal, Giupponi, Lorenza, and Pérez Neira, Ana Isabel

Abstract

This paper focuses on spectrum handoffs in a cognitive radio network where secondary (unlisenced) users (i.e. cognitive radios) opportunistically use frequency channels as long as the aggregate interference caused at the primary (licensed) users does not exceed a certain threshold. When harmful interference is caused to a primary user, or when the quality of service perceived by a secondary user is not satisfactory, the secondary user has to initiate a spectrum handoff to quickly vacate the channel it is occupying. The proposal in this paper is a fuzzy-based approach able to make effective spectrum handoff decisions in a context characterized by uncertain, incomplete and heterogeneous information., Postprint (published version)

Published
2008

303. A QoS-aware green cooperative compressed sensing scheme in IEEE 802.22 WRAN

Author

Hong Ji, Baokun Shan, Xi Li, and Yi Li

Subjects
Mathematical optimization, Computer Networks and Communications, business.industry, Network packet, Computer science, Quality of service, Real-time computing, Particle swarm optimization, 020206 networking & telecommunications, 020302 automobile design & engineering, 02 engineering and technology, Nonlinear system, Compressed sensing, IEEE 802.22, 0203 mechanical engineering, 0202 electrical engineering, electronic engineering, information engineering, Wireless, Electrical and Electronic Engineering, business, Efficient energy use
Abstract

SUMMARY Distributed antennas (DAs) are introduced into IEEE 802.22 wireless regional area network (WRAN) in order to improve consumer premise equipment (CPE) access in high density or large scale network scenario. However, guaranteeing the CPEs' QoS in DA-WRAN in the process of spectrum sensing is largely ignored. In this paper, we introduce compressed sensing theory into DA-WRAN and propose a QoS-Aware Green Cooperative Compressed Sensing scheme, which aims to maximize energy efficiency of DA-WRAN under its basic QoS constraints of packet drop probability, sensing delay and total throughput. In the proposed scheme, the expression for accuracy of compressed signal recovery under certain sparsity is fitted into exponential function, and the number of compressed samples number is taken into account during the energy efficiency optimization for the first time. To solve the formulated nonlinear multivariate optimal problem, a sub-optimal algorithm based on particle swarm optimization is presented. At last, the performances of the proposed scheme are simulated and discussed. The simulation results show that the performance on energy efficiency of proposed scheme is better than contrasting algorithms without compromising CPEs' QoS. Copyright © 2014 John Wiley & Sons, Ltd.

Published
2014
Full Text
View/download PDF

304. A Location-Based Duplex Scheme for Cost Effective Rural Broadband Connectivity Using IEEE 802.22 Cognitive Radio Based Wireless Regional Area Networks

Author

R. Kalidoss, M. A. Bhagyaveni, and Kuttathati Srinivasan Vishvaksenan

Subjects
Computer science, business.industry, General Mathematics, ComputerSystemsOrganization_COMPUTER-COMMUNICATIONNETWORKS, General Physics and Astronomy, Duplex (telecommunications), Regional area, Frequency allocation, Cognitive radio, IEEE 802.22, Broadband, Wireless, Data as a service, business, Computer network
Abstract

The search for a method of utilizing the scarce spectrum in an efficient manner is an active area of research in both academic and industrial communities. IEEE 802.22 is a standard for wireless regional area network (WRAN) based on cognitive radio (CR) that operates over underutilized portions of TV bands (54–862 MHz). Time division duplex (TDD)-based WRAN cells have such advantages as dynamic traffic allocation, traffic asymmetry to users and ease of spectrum allocation. However, these cells suffer from severe cross time slot (CTS) interference when the frames of the cells are not synchronized with adjacent WRAN cells. In this paper, we evaluate the location-based duplex (LBD) scheme for eliminating the CTS interference. The proposed LBD system is much more flexible and efficient in providing asymmetric data service and eliminating CTS interference by exploiting the advantages of both TDD and frequency division duplex (FDD) schemes. We also compare the performance of LBD systems with virtual cell concepts. Furthermore, our simulation results reveal that LBD-based systems outperform the virtual cell approach in terms of the low signal-to-interference (SIR) ratio requirement by mitigating the effects of CTS.

Published
2014
Full Text
View/download PDF

305. Energy/bandwidth-Saving Cooperative Spectrum Sensing for Two-hopWRAN

Author

Chin-Sean Sum, Ming-Tuo Zhou, Chunyi Song, and Hiroshi Harada

Subjects
Physics, IEEE 802.22, Cognitive radio, Energy saving, lcsh:TK5101-6720, Bandwidth (signal processing), Wireless Regional Access Network, Electronic engineering, TV White Space, Cooperative Spectrum Sensing, lcsh:Telecommunication
Abstract

A two-hop wireless regional area network (WRAN) providing monitoring services operating in Television White Space (TVWS), i.e., IEEE P802.22b, may employ a great number of subscriber customer-premises equipments (S-CPEs) possibly without mains power supply, leading to requirement of cost-effective and power-saving design. This paper proposes a framework of cooperative spectrum sensing (CSS) and an energy/bandwidth saving CSS scheme to P802.22b. In each round of sensing, S-CPEs with SNRs lower than a predefined threshold are excluded from reporting sensing results. Numerical results show that the fused missed-detection probability and false alarmprobability could remainmeeting sensing requirements, and the overall fused error probability changes very little. With 10 S-CPEs, it is possible to save more than 40% of the energy/bandwidth on a Rayleigh channel. The principle proposed can apply to other advanced sensing technologies capable of detecting primary signals with low average SNR.

Published
2014
Full Text
View/download PDF

306. Self-Coexistence among IEEE 802.22 Networks: Distributed Allocation of Power and Channel.

Author

Sakin SA, Razzaque MA, Hassan MM, Alamri A, Tran NH, and Fortino G

Abstract

Ensuring self-coexistence among IEEE 802.22 networks is a challenging problem owing to opportunistic access of incumbent-free radio resources by users in co-located networks. In this study, we propose a fully-distributed non-cooperative approach to ensure self-coexistence in downlink channels of IEEE 802.22 networks. We formulate the self-coexistence problem as a mixed-integer non-linear optimization problem for maximizing the network data rate, which is an NP-hard one. This work explores a sub-optimal solution by dividing the optimization problem into downlink channel allocation and power assignment sub-problems. Considering fairness, quality of service and minimum interference for customer-premises-equipment, we also develop a greedy algorithm for channel allocation and a non-cooperative game-theoretic framework for near-optimal power allocation. The base stations of networks are treated as players in a game, where they try to increase spectrum utilization by controlling power and reaching a Nash equilibrium point. We further develop a utility function for the game to increase the data rate by minimizing the transmission power and, subsequently, the interference from neighboring networks. A theoretical proof of the uniqueness and existence of the Nash equilibrium has been presented. Performance improvements in terms of data-rate with a degree of fairness compared to a cooperative branch-and-bound-based algorithm and a non-cooperative greedy approach have been shown through simulation studies., Competing Interests: There is no conflict of Interest among the authors.

Published
2017
Full Text
View/download PDF

307. Secure Cooperative Sensing in IEEE 802.22 WRANs Using Shadow Fading Correlation.

Author

Min, Alexander W., Shin, Kang G., and Hu, Xin

Subjects
WIRELESS LAN standards, SIGNAL detection, WIRELESS sensor networks, COMPUTER graphics, THREE-dimensional imaging, COMPUTER networks, DETECTORS
Abstract

Cooperative (or distributed) sensing has been recognized as a viable means to enhance the incumbent signal detection by exploiting the diversity of sensors. However, it is challenging to secure such distributed sensing due mainly to the unique features of dynamic spectrum access networks—openness of low-layer protocol stacks in software-defined radio devices and the absence of interactions/coordination between primary and secondary devices. To meet this challenge, we propose an attack-tolerant distributed sensing protocol (ADSP) for DTV signal detection in IEEE 802.22 WRANs, under which sensors in close proximity are grouped as a cluster, and sensors within a cluster cooperate to safeguard the integrity of sensing. The heart of ADSP is a novel filter based on shadow-fading correlation, by which the fusion center cross-validates reports from the sensors to identify and penalize abnormal sensing reports. By realizing this correlation filter, ADSP significantly reduces the impact of an attack on the performance of distributed sensing, while incurring minimal processing and communication overheads. ADSP also guarantees the detectability requirements of 802.22 to be met even with the presence of sensing report manipulation attacks by scheduling sensing within the framework of sequential hypothesis testing. The efficacy of ADSP is validated on a realistic 2D shadow-fading field. Our extensive simulation-based study shows that ADSP reduces the false-alarm rate by 99.2 percent while achieving 97.4 percent of maximum achievable detection rate, and meets the detection requirements of IEEE 802.22 in various attack scenarios. [ABSTRACT FROM PUBLISHER]

Published
2011
Full Text
View/download PDF

308. Robust Signal Classification Using Unsupervised Learning.

Author

Clancy, T. Charles, Khawar, Awais, and Newman, Timothy R.

Abstract

Spectrum sensing is required for many cognitive radio applications, including spectral awareness, interoperability, and dynamic spectrum access. Any approach is highly dependent on the signal environment in which it operates. Noise, multipath channel distortion, sample-rate offsets, and center-frequency mis-estimations can make feature-based signal detection difficult. Additionally, as these values change in a dynamic environment, statically-trained classifiers cannot track the evolving class statistics. Unsupervised learning allows a cognitive radio system to evolve its classifier as the radio environment evolves, without the need for expert-annotated signal samples. While this allows improved classifier performance, previous work has demonstrated that unsupervised techniques developed without security in mind suffer from classifier manipulation through transmission of carefully crafted signals that shift decision boundaries. This paper develops countermeasures to the class manipulation attacks that mitigates their efficacy, and shows the robustness of unsupervised learning for signal classification in an evolving RF environment. [ABSTRACT FROM PUBLISHER]

Published
2011
Full Text
View/download PDF

309. In-Band Spectrum Sensing in IEEE 802.22 WRANs for Incumbent Protection.

Author

Kim, Hyoil and Shin, Kang G.

Abstract

In cognitive radios, in-band spectrum sensing is essential for the protection of legacy spectrum users, enabling secondary users to vacate channels immediately upon detection of primary users. For in-band sensing, it is important to meet detectability requirements, such as the maximum allowed detection latency and the probability of misdetection and false alarm. In this paper, we propose key techniques for efficient in-band sensing. We first advocate the use of clustered sensor networks, and propose a periodic in-band sensing algorithm that optimizes sensing period and sensing time to meet the detectability requirements while minimizing sensing overhead. The scheme also determines the better of energy or feature detection incurring less sensing overhead at each SNR level, and derives the threshold aRSSthreshold on the average received signal strength of a primary signal above which energy detection is preferred to feature detection. We consider two key factors affecting aRSSthreshold: noise uncertainty and inter-CRN interference. aRSSthreshold appears to lie between -114.6 dBm and -109.9 dBm with noise uncertainty ranging from 0.5 dB to 2 dB, and between -112.9 dBm and -110.5 dBm with 1-6 interfering CRNs. We also investigate how strict the detection requirement must be for efficient reuse of idle channels without incurring unnecessary channel switches due to false detection of primaries. [ABSTRACT FROM PUBLISHER]

Published
2010
Full Text
View/download PDF

310. Principy zabezpečení bezdrátových standardů

Author

Očenášek, Pavel, Ryšavý, Ondřej, Vokál, Martin, Očenášek, Pavel, Ryšavý, Ondřej, and Vokál, Martin

Abstract

Počítačové sítě jsou v rámci organizace IEEE normalizovány výborem 802, jehož součástí je v současnosti šest pracovních skupin vyvíjejících specifikace pro bezdrátové komunikace. Těmi jsou IEEE 802.11 pro bezdrátové lokální sítě, IEEE 802.15 pro bezdrátové osobní sítě, IEEE 802.16 pro bezdrátové metropolitní sítě, IEEE 802.20 pro mobilní širokopásmový přístup, IEEE 802.21 pro vertikální handover a IEEE 802.22 pro bezdrátové regionální sítě. Diplomová práce se zaměřuje na bezpečnostní analýzu jednotlivých standardů, uvádí hrozby, zranitelná místa, aktuální bezpečnostní opatření a provádí vzájemné srovnání bezdrátových norem z bezpečnostního hlediska s vyzdvižením vlastností specifických pro danou oblast. Závěr práce je věnován celkovému zhodnocení projektu, jeho přínosům a možnostem dalšího vývoje ve formě navazujících studií., Computer networks are in the scope of the IEEE organization normalized by the 802 board which currently comprises six working groups for wireless communications. IEEE 802.11 for wireless local area networks, IEEE 802.15 for wireless personal area networks, IEEE 802.16 for wireless metropolitan area networks, IEEE 802.20 for mobile broadband wireless access, IEEE 802.21 for media independent handover and IEEE 802.22 for wireless regional area networks. This master's thesis focuses on a security analysis of particular standards, describes threats, vulnerabilities, current security measures and mutually compares wireless specifications from a security point of view. The conclusion is devoted to overall evaluation of the project, to its contributions, possible enhancements and continuation in the form of consequential studies.

311. Modeling of vertical handover from 3GPP LTE to cognitive wireless regional area network

Author

Alexander G., Yuliya G., Elvira Z., Anatoly P., Alexander G., Yuliya G., Elvira Z., and Anatoly P.

Abstract

The first wireless regional area network standard with a cognitive radio (CR) framework for a broadband fixed or mobile access is IEEE 802.22. This standard based at the concept of sensing and utilizing temporary vacant radio channel in the frequency range from 54 MHz to 862 MHz. The IEEE 802.22 WRAN architectures includes decentralized collection of data about power level and time-dependent spectrum availability with help of customer premise equipment (CPE). The CPE sojourn time at the IEEE 802.22 WRAN is a key performance index for a making decision about vertical handover (VHO) from a current wireless access network as 3GPP LTE to the 802.22 WRAN. This paper present the sojourn time procedure from IEEE 802.22 discovery by CPE to a new IP-session establishment on WRAN. A new integrated architecture is offered for a coordinate access network creation on the base of integrated 3GPP access network discovery and selection function (ANDSF) and IEEE 802.22 Spectrum Manager (SM). © 2017 IEEE.

312. Principy zabezpečení bezdrátových standardů

Author

Očenášek, Pavel, Ryšavý, Ondřej, Očenášek, Pavel, and Ryšavý, Ondřej

Abstract

Počítačové sítě jsou v rámci organizace IEEE normalizovány výborem 802, jehož součástí je v současnosti šest pracovních skupin vyvíjejících specifikace pro bezdrátové komunikace. Těmi jsou IEEE 802.11 pro bezdrátové lokální sítě, IEEE 802.15 pro bezdrátové osobní sítě, IEEE 802.16 pro bezdrátové metropolitní sítě, IEEE 802.20 pro mobilní širokopásmový přístup, IEEE 802.21 pro vertikální handover a IEEE 802.22 pro bezdrátové regionální sítě. Diplomová práce se zaměřuje na bezpečnostní analýzu jednotlivých standardů, uvádí hrozby, zranitelná místa, aktuální bezpečnostní opatření a provádí vzájemné srovnání bezdrátových norem z bezpečnostního hlediska s vyzdvižením vlastností specifických pro danou oblast. Závěr práce je věnován celkovému zhodnocení projektu, jeho přínosům a možnostem dalšího vývoje ve formě navazujících studií., Computer networks are in the scope of the IEEE organization normalized by the 802 board which currently comprises six working groups for wireless communications. IEEE 802.11 for wireless local area networks, IEEE 802.15 for wireless personal area networks, IEEE 802.16 for wireless metropolitan area networks, IEEE 802.20 for mobile broadband wireless access, IEEE 802.21 for media independent handover and IEEE 802.22 for wireless regional area networks. This master's thesis focuses on a security analysis of particular standards, describes threats, vulnerabilities, current security measures and mutually compares wireless specifications from a security point of view. The conclusion is devoted to overall evaluation of the project, to its contributions, possible enhancements and continuation in the form of consequential studies.

313. Principy zabezpečení bezdrátových standardů

Author

Očenášek, Pavel, Ryšavý, Ondřej, Očenášek, Pavel, and Ryšavý, Ondřej

Abstract

Počítačové sítě jsou v rámci organizace IEEE normalizovány výborem 802, jehož součástí je v současnosti šest pracovních skupin vyvíjejících specifikace pro bezdrátové komunikace. Těmi jsou IEEE 802.11 pro bezdrátové lokální sítě, IEEE 802.15 pro bezdrátové osobní sítě, IEEE 802.16 pro bezdrátové metropolitní sítě, IEEE 802.20 pro mobilní širokopásmový přístup, IEEE 802.21 pro vertikální handover a IEEE 802.22 pro bezdrátové regionální sítě. Diplomová práce se zaměřuje na bezpečnostní analýzu jednotlivých standardů, uvádí hrozby, zranitelná místa, aktuální bezpečnostní opatření a provádí vzájemné srovnání bezdrátových norem z bezpečnostního hlediska s vyzdvižením vlastností specifických pro danou oblast. Závěr práce je věnován celkovému zhodnocení projektu, jeho přínosům a možnostem dalšího vývoje ve formě navazujících studií., Computer networks are in the scope of the IEEE organization normalized by the 802 board which currently comprises six working groups for wireless communications. IEEE 802.11 for wireless local area networks, IEEE 802.15 for wireless personal area networks, IEEE 802.16 for wireless metropolitan area networks, IEEE 802.20 for mobile broadband wireless access, IEEE 802.21 for media independent handover and IEEE 802.22 for wireless regional area networks. This master's thesis focuses on a security analysis of particular standards, describes threats, vulnerabilities, current security measures and mutually compares wireless specifications from a security point of view. The conclusion is devoted to overall evaluation of the project, to its contributions, possible enhancements and continuation in the form of consequential studies.

314. Principy zabezpečení bezdrátových standardů

Author

Očenášek, Pavel, Ryšavý, Ondřej, Očenášek, Pavel, and Ryšavý, Ondřej

Abstract

Počítačové sítě jsou v rámci organizace IEEE normalizovány výborem 802, jehož součástí je v současnosti šest pracovních skupin vyvíjejících specifikace pro bezdrátové komunikace. Těmi jsou IEEE 802.11 pro bezdrátové lokální sítě, IEEE 802.15 pro bezdrátové osobní sítě, IEEE 802.16 pro bezdrátové metropolitní sítě, IEEE 802.20 pro mobilní širokopásmový přístup, IEEE 802.21 pro vertikální handover a IEEE 802.22 pro bezdrátové regionální sítě. Diplomová práce se zaměřuje na bezpečnostní analýzu jednotlivých standardů, uvádí hrozby, zranitelná místa, aktuální bezpečnostní opatření a provádí vzájemné srovnání bezdrátových norem z bezpečnostního hlediska s vyzdvižením vlastností specifických pro danou oblast. Závěr práce je věnován celkovému zhodnocení projektu, jeho přínosům a možnostem dalšího vývoje ve formě navazujících studií., Computer networks are in the scope of the IEEE organization normalized by the 802 board which currently comprises six working groups for wireless communications. IEEE 802.11 for wireless local area networks, IEEE 802.15 for wireless personal area networks, IEEE 802.16 for wireless metropolitan area networks, IEEE 802.20 for mobile broadband wireless access, IEEE 802.21 for media independent handover and IEEE 802.22 for wireless regional area networks. This master's thesis focuses on a security analysis of particular standards, describes threats, vulnerabilities, current security measures and mutually compares wireless specifications from a security point of view. The conclusion is devoted to overall evaluation of the project, to its contributions, possible enhancements and continuation in the form of consequential studies.

315. Principy zabezpečení bezdrátových standardů

Author

Očenášek, Pavel, Ryšavý, Ondřej, Vokál, Martin, Očenášek, Pavel, Ryšavý, Ondřej, and Vokál, Martin

Abstract

Počítačové sítě jsou v rámci organizace IEEE normalizovány výborem 802, jehož součástí je v současnosti šest pracovních skupin vyvíjejících specifikace pro bezdrátové komunikace. Těmi jsou IEEE 802.11 pro bezdrátové lokální sítě, IEEE 802.15 pro bezdrátové osobní sítě, IEEE 802.16 pro bezdrátové metropolitní sítě, IEEE 802.20 pro mobilní širokopásmový přístup, IEEE 802.21 pro vertikální handover a IEEE 802.22 pro bezdrátové regionální sítě. Diplomová práce se zaměřuje na bezpečnostní analýzu jednotlivých standardů, uvádí hrozby, zranitelná místa, aktuální bezpečnostní opatření a provádí vzájemné srovnání bezdrátových norem z bezpečnostního hlediska s vyzdvižením vlastností specifických pro danou oblast. Závěr práce je věnován celkovému zhodnocení projektu, jeho přínosům a možnostem dalšího vývoje ve formě navazujících studií., Computer networks are in the scope of the IEEE organization normalized by the 802 board which currently comprises six working groups for wireless communications. IEEE 802.11 for wireless local area networks, IEEE 802.15 for wireless personal area networks, IEEE 802.16 for wireless metropolitan area networks, IEEE 802.20 for mobile broadband wireless access, IEEE 802.21 for media independent handover and IEEE 802.22 for wireless regional area networks. This master's thesis focuses on a security analysis of particular standards, describes threats, vulnerabilities, current security measures and mutually compares wireless specifications from a security point of view. The conclusion is devoted to overall evaluation of the project, to its contributions, possible enhancements and continuation in the form of consequential studies.

316. Modified algorithm of dynamic frequency hopping (DFH) in the IEEE 802.22 standard

Author

Denis Kleyko, Evgeny Osipov, and Nikita Lyamin

Subjects
Scheme (programming language), business.industry, Computer science, IEEE 802.22 standard, ComputerSystemsOrganization_COMPUTER-COMMUNICATIONNETWORKS, Communication Systems, Reuse, WRAN, Communications system, Connectionless communication, IEEE 802.22, Cognitive radio, Dynamic Frequency Hopping (DFH), Computer Science::Networking and Internet Architecture, DFHC, Wireless, Frequency-hopping spread spectrum, DFH scheme, business, computer, Kommunikationssystem, Computer network, computer.programming_language
Abstract

IEEE 802.22 Cognitive Wireless Regional Area Networks is a first standard of wireless terrestrial system relying on cognitive radio concept and operating as an opportunistic system in the the vacant unoccupied frequency spaces of the licensed TV-frequency band. Concept of the proposed standard assumes special functionality to protect the operation of the primary licensed subscribers. Dynamic Frequency Hopping is the mechanism for providing connectionless operation of Wireless Regional Area Networks systems while ensuring protection of transmissions from the primary users. During its operation regular time gaps appear on the involved frequency channels. This paper introduces the concept of the efficient reuse of the vacant frequency resources appearing when using the Dynamic Frequency Hopping mode. The scheme for consecutive-parallel inclusion of the new Dynamic Frequency Hopping Communities-members in the Dynamic Frequency Hopping mode is presented. The proposed approach allows significantly decrease time of inclusion the new members into a new Dynamic Frequency Hopping Communities. © Springer International Publishing Switzerland 2014

317. Spectrum Sharing Games of Infrastructure-Based Cognitive Radio Networks

Author

Hosseinabadi, Ghazale, Manshaei, Mohammad Hossein, and Hubaux, Jean-Pierre

Subjects
IEEE 802.22, Game Theory, Nash Bargaining Solution, Cognitive Radio
Abstract

The IEEE 802.22 standard is the first proposed standard for the cognitive radio networks in which a set of base stations (BSs) make opportunistic spectrum access to provide wireless access to the customer-premise equipments (CPE) within their cells in wireless regional area networks (WRAN). The channel assignment and power control must be carried out in BSs and CPEs, such that no excessive interference is caused to the users of the primary network. We use a game-theoretic model to analyze the non- cooperative behavior of the secondary users in IEEE 802.22 networks. We first show the existence of Nash equilibrium in a 2-cell non-cooperative game model, where the players (BSs) want to increase their coverage range. Then we extend our game to an N-player non-cooperative game where the players aim at maximizing the number of subscribers (i.e., CPEs). We conclude that the non- cooperative behavior of the players might result in a small number of supported CPEs and this can be solved by cooperative techniques, such as the Nash bargaining solution. Numerical results show that our proposed Nash bargaining solution can significantly increase the efficiency of the opportunistic spectrum allocation.

Catalog

Books, media, physical & digital resources
See catalog results