Abstract: A method for selecting a channel for a network element in a shared spectrum communication system is provided. The method comprises identifying a plurality of candidate channels of a frequency band of the shared spectrum communication system. For each of the plurality of candidate channels, the method further comprises determining at least one transmit power estimate based on at least one available interference margin. The at least one available interference margin is based on a power allocation protocol for the shared spectrum communication system. The method further comprises scoring each of the plurality of candidate channels based on the at least one transmit power estimate. The method further comprises ranking the plurality of candidate channels based on the scores for each of the plurality of candidate channels. The method further comprises selecting one of the plurality of candidate channels based on the ranking of the plurality of candidate channels.

Abstract: Techniques are provided for more efficiently determining frequency spectrum to allocate to General Authorized Access (GAA) citizens broadband radio service device(s) (CBSD(s)). Efficiency is enhanced by reducing a number of sets of frequency spectrum(s) by reducing a number of colors (assigned to nodes of connected set(s) of the network graph(s)) to which assignable frequency spectrum changes amongst the set(s).

Abstract: Techniques are provided for planning frequency spectrum and power allocated to transmission points of a radio network that is controlled by a spectrum access system and shares spectrum with incumbents and/or other secondary users (e.g., external radio(s)). Techniques are also provided for managing communications between components of the radio network and the spectrum access system, and to allocate frequency spectrum and maximum transmission power to component(s) of a radio network.

Abstract: Techniques are provided for diminishing adjacent channel interference between radios using shared frequency spectrum. A guard band may be inserted between a pair of adjacent frequency spectrums so that they are no longer adjacent.

Abstract: Systems and methods for automatic frequency coordination are provided. In one embodiment, an automatic frequency coordination (AFC) system for authorizing unlicensed operator utilization of a shared spectrum band comprising channels licensed to incumbent operators comprises: a processor coupled to a memory; and an exclusion zone calculator executed by the processor, the exclusion zone calculator configured to construct an exclusion zone for an incumbent receiver antenna operating on a licensed channel of the shared band, wherein the calculator is configured to construct the exclusion zone by: calculating a set of exclusion zone radiuses along a plurality of radials of a radial grid based on applying a moving average filter to interference power values calculated for a plurality of locations along a length of each of the radials; and applying an averaging filter to the exclusion zone radiuses to define the exclusion zone between the exclusion zone radiuses and the receiver antenna.

Abstract: Methods and apparatuses for determining an assignment of frequency channels to radios of a spectrum access system are provided and which result in at least one of: (a) an enhanced transmit power-bandwidth product or an enhanced probable transmit power-bandwidth product for all radios, (b) diminished interference between radios of different nodes, and (c) diminishing changes to frequency channels either requested by or previously assigned to radios.

Abstract: Systems and methods for SAS interference calculation management are provided. In one embodiment, a system comprises: a processor coupled to a memory; a network interface configured to couple the SAS to a network, the processor coupled to the interface; and a grant request processing function executed by the processor, the grant request processing function processes grant requests received from radios located in a neighborhood defined around a protection area, wherein the requests comprises a request to transmit on a protected frequency channel of the protected area; wherein the grant request processing function manages a timing of when to processes interference calculations associated with the grant requests based on or both of: determining whether to steer a requesting radio to a non-protected frequency channel; and at least one Q/N estimate power calculation, wherein Q comprises a value of an allowed interference power limit, and N is a number of authorized radios.

Abstract: Techniques are provided for more efficiently determining frequency spectrum to allocate to General Authorized Access (GAA) citizens broadband radio service device(s) (CBSD(s)). Efficiency is enhanced by forming interference groups. Each of interference group may be analyzed in parallel and substantially contemporaneously, e.g., using parallel processing.

Abstract: Techniques are provided for diminishing (a) interference at GAA CBSD(s), and/or (b) maximum transmit power(s) of each of one or more GAA CBSD(s) by eliminating contention(s) between one or more pairs of spectrum access systems.

Abstract: Techniques for modelling a radio network in a geographic region utilizing shared spectra are disclosed. Population data is obtained for the geographic region. A number of radios per channel in the geographic region, N?, is determined. Candidate geographic location for radios in the geographic region are determined. For every channel in the shared spectra, at least one of a static dataset and a dynamic dataset is determined. At least one set of output data, that is a statistical characterization of the radio network, is generated using at least one of the static dataset and the dynamic dataset, to aid in design of the radio network.

Abstract: Techniques are provided for accurately determining actual and prospective location(s) of radio(s) located in a structure and controlled by a shared spectrum system. By more accurately knowing the location(s) of the radios, the shared spectrum system can more efficiently allocate maximum transmission power(s) to the radio(s), enhance corresponding radio coverage area(s), and/or diminish interference to other radio(s) and/or primary user(s).

Abstract: Techniques are provided for determining a channel at and/or a maximum transmit power level in which the requesting General Authorized Access (GAA) citizens broadband radio service device (CBSD) can transmit prior to the next to be executed coordinated periodic activities among spectrum access systems while diminishing co-channel interference between the requesting GAA CBSD and other GAA CBSD(s) in a neighborhood centered around the requesting GAA CBSD.

Abstract: A system for ESC protection includes a spectrum access system (SAS) configured to allocate a frequency band in the system and at least one Citizens Broadband Radio Service device (CBSD) communicatively coupled to the SAS and configured to provide wireless service to UEs. The system also includes at least one ESC communicatively coupled to the SAS and configured to detect RADAR signals from offshore RADAR devices. The SAS is configured to assign grants to the at least one CBSD such that the aggregate signal energy received at the ESC does not cross an overload threshold, as calculated by the SAS. The ESC is configured to detect an aggregate signal energy received at the ESC, and trigger, in response to the aggregate signal energy exceeding the overload threshold, an operation that suspends transmission of at least one CBSD or moves at least one CBSD to a different frequency channel.

Abstract: Techniques are provided for enhancing accuracy of modelling aggregate interference at each protection point of a geographical area in a region having an urban or suburban morphology type whilst reducing processing requirements by diminishing a number of elevation data that must be obtained from external sources. The geographical area may be a priority access license protection area, a grandfathered wireless protection zone, or other geographic area which must be protected from interference.

Abstract: Techniques are provided for more reliably selecting an available secondary channel for a PAL user when the PAL user must relinquish its primary channel to an incumbent user for use in a geographic region. An indication is received that the incumbent user is utilizing or will utilize at least one PAL channel. It is determined whether the at least one PAL channel is utilized by at least one PAL user. Upon determining that the at least one PAL channel is utilized by at least one PAL user, then each PAL channel, used by the PAL user and for which the indication has been received, is shifted higher or lower in frequency to an available PAL channel.

Abstract: Techniques are provided for accurately determining actual and prospective location(s) of radio(s) located in a structure and controlled by a shared spectrum system. By more accurately knowing the location(s) of the radios, the shared spectrum system can more efficiently allocate maximum transmission power(s) to the radio(s), enhance corresponding radio coverage area(s), and/or diminish interference to other radio(s) and/or primary user(s).

Abstract: A method for selecting at least one channel for a network element in a shared spectrum communication system is provided. The method includes identifying a plurality of candidate channels of a frequency band of the shared spectrum communication system. For each channel of the plurality of channels, the method further includes: evaluating the channel based on one or more of a plurality of criteria for the network element; scoring the channel based on the evaluation of the channel for the network element; and ranking the plurality of candidate channels based on the assigned scores for each of the plurality of channels. The method further includes selecting at least one channel based on the ranking of the plurality of candidate channels.

Abstract: Techniques are provided for accurately determining actual and prospective location(s) of radio(s) located in a structure and controlled by a shared spectrum system. By more accurately knowing the location(s) of the radios, the shared spectrum system can more efficiently allocate maximum transmission power(s) to the radio(s), enhance corresponding radio coverage area(s), and/or diminish interference to other radio(s) and/or primary user(s).

Abstract: Techniques for determining power levels of radios, including a time domain duplexing (TDD) system, in shared frequency spectrum is provided. A TDD radio, of the TDD system, in a neighborhood having a largest interference contribution in the frequency spectrum at the point. Transmit power levels are determined for (a) the selected TDD radio, (b) other radios in the neighborhood that are not part of the TDD system, and (c) at least one radio in the TDD system that is not the TDD radio having the largest interference contribution in the frequency spectrum. Thus, interference margin may be fairly allocated to radios in neighborhood(s) about protection points.

Abstract: Techniques for planning locations of receiver systems for an environmental sensing capabilities (ESC) system are provided. An ESC system is used to detect activity of primary users in shared spectra. The techniques can be used to reduce dead zone area(s), created by the receiver systems, for radios of secondary systems using the shared frequency spectrum.