3.5 GHz Federal Incumbent Protection Algorithms

Souryal, Michael R.; Nguyen, Thao T.; LaSorte, Nickolas J.

doi:10.1109/dyspan.2018.8610480

Cited by 14 publications

(10 citation statements)

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“…After the required details are finalized at the GAA CBSD GUI, we access the SAS GUI portal and enter the essential details to verify the installed GAA CBSD by a Certified Professional Installer (CPI). Note that a CPI is responsible for verifying the installation details of an outdoor CBSD (also known as a Type B CBSD) as well as an indoor CBSD if the Above Ground Level (AGL) height 3 of the indoor CBSD is more than or equal to 6 meters. Table I shows a few critical parameters 4 that are shared at the SAS GUI portal for verification by a CPI (the device serial number and the FCC ID of the GAA CBSD are also provided to the CPI, and we do not mention the details here for security reasons).…”

Section: An Outdoor Gaa Cbsd Deployment Detailsmentioning

confidence: 99%

“…Therefore, while there is a detected incumbent transmission, the existing nearby PAL and the GAA users refrain from transmissions to minimize the possibility of unintended interference. In particular, the deployed CBRS Devices (CBSDs) are impacted based on their frequency of operations on CBRS and the associated interference levels within the Dynamic Protection Areas (DPAs) reserved for the incumbents [2], [3].…”

Section: Introductionmentioning

confidence: 99%

“…Note, the created ranklist of the interfering CBSDs is called the move-list. To retain the aggregate interference level within a certain range and maintain the required DPA isolation from PALs and GAAs, the CBSDs with the highest interference contributions are suspended or terminated from further transmissions [3]. In this paper, we only focus on the GAA CBSDs and their dwelling possibilities in the presence of the incumbents.…”

Section: Introductionmentioning

confidence: 99%

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On Communication Reliability of General Authorized Access Device on Citizens Broadband Radio Service

Chakraborty¹,

Rao²

2023

Preprint

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<p> In 2015, the Federal Communications Commission approved the usage of the 3.55 GHz - 3.70 GHz (i.e., band~48) spectrum opportunistically for commercial purposes. Since then, the 150 MHz bandwidth, also known as the Citizens Broadband Radio Service (CBRS), has attracted the attention of the leading telecommunication industries and the research communities. The CBRS spectrum has a hierarchical access architecture where the original owners of the CBRS spectrum, i.e., the incumbents, have the highest and uninterrupted transmission authority. As the incumbent transmission is sparse, the unused spectrum is opportunistically shared between the Primary Access License (PAL) users and the General Authorized Access (GAA) users. Both the user groups get approval to communicate on the CBRS spectrum from the Spectrum Access System (SAS), which acts as a cloud-based centralized administrator of the CBRS and is responsible for ensuring non-compromised incumbent operation on the CBRS. Note that the GAA users do not purchase the spectrum access through auction as PAL does and has the slightest preference to communicate on the CBRS. In this paper, we study the communication reliability of a GAA CBRS Device (GAA CBSD) when the approval from the SAS administrator to communicate on the CBRS spectrum is considered. Our experimental observations show that the deployed GAA CBSD remains uncommunicative for a sizable amount of the observed time duration as the SAS administrator does not allow the GAA CBSD to communicate on the CBRS to protect the incumbent/PAL transmissions.</p>

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Section: An Outdoor Gaa Cbsd Deployment Detailsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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On Communication Reliability of General Authorized Access Device on Citizens Broadband Radio Service

Chakraborty¹,

Rao²

2023

Preprint

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“…where P i (ch) is the conducted power of the i th grant on frequency range ch in dB relative to 1 mW (dBm), G tx,i (p) is the transmit antenna gain in the direction of point p in dB relative to isotropic (dBi), and L i,median (p) is the median path loss from the transmitter to point p (dB). It is important to note that I i,median (dBm) (p, ch) does not include the receive antenna gain, which might lead to a sub-optimality of the standard algorithm; but the advantage is that the sort need only be done once per protection point and all the subsequent calculations can be parallelized [18].…”

Section: Standard Move List Algorithmmentioning

confidence: 99%

Deterministic Move Lists for Federal Incumbent Protection in the CBRS Band

Nguyen

Souryal

2021

IEEE Trans. Cogn. Commun. Netw.

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The 3.5 GHz citizens broadband radio service (CBRS) band in the U.S. is a key portion of mid-band spectrum shared between commercial operators and existing federal and non-federal incumbents. To protect the federal incumbents from harmful interference, a spectrum access system (SAS) is required to use a common, standardized algorithm, called the move list algorithm, to suspend transmissions of some CBRS devices (CBSDs) on channels in which the incumbent becomes active. However, the current reference move list implementation used for SAS testing is non-deterministic in that it uses a Monte Carlo estimate of the 95 th percentile of the aggregate interference from CBSDs to the incumbent. This leads to uncertainty in move list results and in the aggregate interference check of the test. This paper uses upper and lower bounds on the aggregate interference distribution to compute deterministic move lists. These include the reference move list used by the testing system and an operational move list used by the SAS itself. We evaluate the performance of the proposed deterministic move lists using reference implementations of the standards and simulated CBSD deployments in the vicinity of federal incumbent dynamic protection areas.

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“…In this paper, we consider a primary protection method which is adopted to calculate the SBS-SL (which is called as the dynamic protection area move list) in CBRS as a conventional method [22]- [24]. Because the conventional method does not take care of the range of the PRS's antenna boresight rotation, the SMS determines the SBS-SL with assuming that the PRS's antenna boresight rotates 360 degrees in the horizontal plane and its vertical antenna pattern is omni-directional.…”

Section: Conventional Primary Protectionmentioning

confidence: 99%

A New Primary Protection Method With Received Power-Based 3D Antenna Rotation Range Prediction for Dynamic Spectrum Access

et al. 2021

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We propose a new primary protection method for Dynamic Spectrum Access (DSA), in which a secondary system uses a frequency band assigned to a primary system. Following a DSA implementation plan in Japan, we take care of a practical scenario where a primary system's transmission station (PTS) moves along a predefined course or area, and a corresponding primary reception station (PRS) keeps its antenna boresight facing towards the moving PTS. For accurate interference calculation from the secondary to the primary systems in this scenario, the proposed method takes the movement of the PTS into account and predicts a range of angle variation of the PRS's antenna boresight based on received signal powers from the PTS to the PRS. We conducted computer simulations in three different practical scenarios to demonstrate the effectiveness of the proposed method. The simulation results show that the proposed method can increase the number of available secondary base stations (SBSs) by up to 1.93 times compared to a conventional method.INDEX TERMS 5G mobile communication, cognitive radio, dynamic spectrum access, field pickup unit (FPU), microwave link, spectrum sharing.

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3.5 GHz Federal Incumbent Protection Algorithms

Cited by 14 publications

References 0 publications

On Communication Reliability of General Authorized Access Device on Citizens Broadband Radio Service

On Communication Reliability of General Authorized Access Device on Citizens Broadband Radio Service

Deterministic Move Lists for Federal Incumbent Protection in the CBRS Band

A New Primary Protection Method With Received Power-Based 3D Antenna Rotation Range Prediction for Dynamic Spectrum Access

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