Abstract: An illustrative embodiment disclosed herein is a method including estimating, by an endpoint, a first rate of change of a Doppler frequency offset during a downlink reception from a satellite associated with the Doppler frequency offset and applying, by the endpoint, a second rate of change of the Doppler frequency offset to an uplink transmission to the satellite. The second rate of change of the Doppler frequency offset compensates the first rate of change of the Doppler frequency offset.

Abstract: A method and apparatus for addressing reductions in the uplink path gain associated with user terminals are disclosed. A return path of the satellite may receive a number of data signals on a single frequency channel, wherein each of the number of data signals occupies a unique time-frequency sub-channel of the single frequency channel, originates from a corresponding one of a number of user terminals (UTs), and includes a plurality of time slots dynamically allocated to a group of user equipment (UE) devices associated with the corresponding UT. The return path may determine a combined power level of all the number of received data signals that occupy all the time-frequency sub-channels of the single frequency channel, and then adjust an amplifier gain applied to the number of received data signals in the return path based, at least in part, on the combined power level.

Abstract: Systems and methods are disclosed herein for adaptively coordinating among satellite communication channels.

Abstract: An electronic device is provided. The electronic device includes a first electronic component, a second electronic component, a holder, and an antenna assembly. The second electronic component is slidably coupled to the first electronic component. The holder is coupled to the second electronic component and inserted into the first electronic component. The antenna assembly includes a radio frequency (RF) module, an antenna radiator, and an RF cable. The RF module is disposed in the first electronic component. The antenna radiator is disposed in the second electronic component. An end of the RF cable is coupled to the antenna radiator and the holder, and another end of the RF cable is coupled to the radio frequency module. The RF cable is retracted and stretched when the holder is driven to slide by sliding the second electronic component. A control method of the electronic device is also provided.

Abstract: A low earth orbiting spacecraft (LEO spacecraft) operable in a first earth orbit includes a main body, a data collection payload, and a first directional antenna, each of the data collection payload and the first directional antenna being coupled with the main body. During a first period of time, the main body is oriented such that the data collection payload views a region of interest on the earth. During a second period of time, the main body and the first directional antenna are oriented such that the first directional antenna is directed toward a first ground station. During a third period of time, the main body and the first directional antenna are oriented such that the first directional antenna is directed toward a second spacecraft operating in a second orbit.

Abstract: A system including a constellation of satellites in Low Earth Orbit and a plurality of ground stations to enable continuous communication for other geocentric, non-geosynchronous spacecraft. Network latency, Doppler effects, and router handover time are minimized through selection of orbital parameters for the satellite constellation and locations of ground stations. A plurality of polar or near polar orbit planes is presented at equally spaced right ascension of the ascending node (RAAN), in an alternative ascending-descending pattern. Inter-satellite communication is performed in-plane to relay data to a ground station, and out-of-plane or in-plane to communicate with another satellite that is not a member of the constellation. The number and location of ground stations is selected based on the number of small satellites and orbital planes in order to maintain continuous communications.

Abstract: A device may detect a service condition associated with a network. The device may determine a prioritization of cells of the network based on characteristics of one or more subscribers to the cells of the network. The characteristics may include at least one of: a service type characteristic, an application type characteristic, a mobility characteristic, a vector characteristic, an altitude characteristic, a position characteristic, a location type characteristic, a device type characteristic, a device capability characteristic, a connection characteristic, a subscription characteristic, a call type characteristic, a user profile characteristic, a terrain characteristic, or an operator relationship characteristic. The device may perform an alteration to one or more network parameters based on the prioritization of cells of the network to reduce an impact of the service condition.

Abstract: A radio communication route enables communication from an originating ground station to a destination ground station via one of multiple randomly orbiting, rotating satellites with no active attitude control. The ground stations and satellites include directional antennas for receiving radio signals from and transmitting radio signals in multiple directions. The satellites store an address of a destination ground station from which an initial information signal is transmitted and antenna information identifying the satellite antenna on which the initial information signal was received. Plural satellite antennas transmit linking information identifying the satellite to the originating ground station.

Abstract: The system may be configured to receive a selection of a plurality of timepoints corresponding to an orbital object. The selection of the plurality of timepoints can include sets of identifiers within the selected time period. The system may further be configured to determine an orbital path of the orbital object associated with the selected plurality of timepoints. The orbital path may be determined over an orbital time period that includes a first time period that (i) overlaps the selected time period, (ii) precedes the selected time period, (iii) succeeds the selected time period, or (iv) any combination thereof. The system may generate a display interface that includes a longitude-time graph having a longitude axis spanning from a lower-longitude limit to an upper-longitude limit, a time axis spanning from the lower-time limit to the upper-time limit, and an indication of the orbital path spanning at least the first time period.

Abstract: A communication satellite for use in a satellite constellation is provided. The communication satellite includes: a user side interface for wireless receiving and transmitting of data; a network side interface for wireless receiving and transmitting of data; a first inter satellite interface for wireless receiving and transmitting of data having a first radiation direction of electromagnetic waves; a second inter satellite interface for wireless receiving and transmitting of data having a second radiation direction of electromagnetic waves. The first radiation direction has a first radiation angle with respect to a direction of movement of the communication satellite. The second radiation direction has a second radiation angle with respect to the direction of movement of the communication satellite. An absolute value of the first radiation angle corresponds to an absolute value of the second radiation angle.

Abstract: A high capacity satellite communications system including a satellite with a beam for a forward downlink focused on a geographic area for which disproportionately higher capacity is desired, a hub located in a geographic area for which disproportionately lower capacity is desired, compared to the location of a VSAT, and the VSAT located in area where a beam for a forward downlink received by the VSAT from the satellite does not overlap with a beam for a return downlink received by the hub from a satellite.

Abstract: Methods and apparatus are provided for providing system information to a remote/evolved remote UE (26) as well as methods and apparatus for a remote/evolved remote UE (26) to receive system information.

Abstract: A method and circuit for implementing enhanced scan data testing with decreased scan data interdependence for compressed patterns in on product multiple input signature register (OPMISR) testing through scan skewing, and a design structure on which the subject circuit resides are provided. The circuit is divided into multiple chiplets. Each chiplet includes a stump mux structure including multiple stump muxes connected in series, and a respective chiplet select is provided on shared scan inputs to respective chiplets. The chiplet select gates scan clocks, and when a chiplet is not selected the chiplet retains its data. The chiplet select enables test data to be skewed as scan data enters each chiplet.

Abstract: A system for re-using GEO-allocated communications spectrum in a LEO satellite constellation based communications system, such that the LEO satellite originated signals will not appear in the beam-width of GEO-pointed earth station antennas, and satellites configured to provide communications by manipulating their respective beam transmissions, which may include a forward beam and rearward beam whose angles are controlled to project the beam and reduce or eliminate the potential for interference with GEO-pointed earth station antennas. The system and LEO satellites may provide substantially 100% coverage of an earth station located anywhere on the surface of the earth, without coordination with the GEO satellites or GEO-pointing ground stations.

Abstract: The present solution relates to a method in a source serving gateway (207a) for triggering relocation of at least one user equipment bearer resource from the source serving gateway (207a) to at least one target serving gateway (207b) in a communication network (200). The source serving gateway (207a) serves the user equipment (203) by providing bearer resources to the user equipment (203). The source serving gateway (207a) detects (501) an event indicating relocation of the at least one user equipment bearer resource from the source serving gateway (207a) to the at least one target serving gateway (207b). Furthermore, the source serving gateway (207a) sends (502) a message to a mobility management node (205, 209). The message comprises a trigger to relocate the at least one user equipment bearer resource from the source serving gateway (207a) to the at least one target serving gateway (207b).

Abstract: In one example, a repeater system includes a master unit on a movable object configured to couple to antennas for receiving a downlink RF signal from at least one base station external to the movable object and for transmitting an uplink RF signal towards the at least one base station; and a plurality of remote units each configured to couple to the master unit, each positioned on the movable object and associated with different coverage areas, the remote units each configured to couple to a respective antenna system for transmitting the downlink RF signal into respective coverage areas and for receiving the uplink RF signal from the coverage areas, a control unit, wherein, for at least a subgroup of the remote units, a gain for each remote unit is dynamically adjusted in a time-offset fashion by the control unit to trigger handovers between overlapping base-station cells in a time-offset manner.

Abstract: Apparatuses, systems and methods associated with adaptive communication topology within a wireless mesh network of devices are disclosed herein. In embodiments, a computer device, may include wireless circuitry to communicate with a leader of a network and a controller coupled to the wireless circuitry. The controller may identify one or more values located within a message received via the network, wherein the one or more values are generated by the leader, and determine in which of one or more operation modes the computer device is to operate based, at least partially, on the one or more values. Other embodiments may be described and/or claimed.

Abstract: Radio communications systems use 100 to 200 satellites in random low-earth orbits distributed over a predetermined range of north and south latitudes. The satellites themselves create a radio route between ground stations via radio links between multiple satellites by virtue of onboard global navigation satellite system circuitry for determining the location of the satellite and route creation circuitry for calculating in real time the direction from the satellite's location at a particular instant to a destination ground station. Directional antennas in the satellites transmit routing radio signals to enhance the probability of reception by other satellites. One embodiment facilitates the creation of satellite-to-satellite links by assigning each satellite a unique identifier, storing orbital information defining the locations of all of the orbiting satellites in the system at any particular time, and including in the radio signal the unique identifier associated with the transmitting satellite.

Abstract: A beam scanning antenna, a microwave system, and a beam alignment method are disclosed. The method includes: instructing, by a switching control module, a feed switching module to enable each feed in a multi-feed antenna, so that the feeds separately perform signal quality detection, where the multi-feed antenna includes an aperture unit and at least two feeds, where the feeds are configured to radiate an electromagnetic wave signal, the feed switching module includes multiple switches, and each feed is respectively connected to one switch in the feed switching module; acquiring, by the switching control module, a result of the signal quality detection performed by each feed; and selecting, by the switching control module according to the result of the signal quality detection, one feed having the best signal quality as a working feed.

Abstract: Systems and methods for determining a communication schedule for a satellite system are provided. For instance, orbital data indicative of one or more orbital elements of a first satellite system and one or more second satellite systems can be obtained. Frequency data frequency data indicative of one or more frequencies at which the one or more second satellite systems transmit data can also be obtained. One or more expected radio frequency interference events associated with the first satellite system can then be determined based at least in part on the orbital data and the frequency data. One or more downlink periods during which data is transmitted by the first satellite and one or more silent periods during which data is not transmitted by the first satellite can then be scheduled based at least in part on the expected radio frequency interference events.

Abstract: The present invention provides systems and methods for improved data communication between communication terminals such as a base station and an unmanned aerial vehicle. In some instances, the systems and methods described herein provide robust transmission uplink data such as control data and wideband transmission of downlink data such as image data or other sensor data, while avoiding interference between the uplink data transmission and the downlink transmission.

Abstract: An embodiment of the present invention is a system to maximize efficiency as a mobile terminal receives data signals transmitted through multiple satellite spot beams. The multiple spot beams can be broadcast via a single satellite or multiple satellites. As a mobile terminal travels throughout a region, the system determines which spot beam would delivers data in the most efficient manner possible. This system takes into account multiple factors, including but not limited to velocity of the mobile terminal, traffic within a spot beam, business affiliations, etc. Once the system takes into account the various factors, an embodiment of the present invention generates a relative weighted factor that is subsequently associated with various available spot beams. Based on rankings of the weighted factors associated with each spot beam, the system may choose to receive data from a different spot beam.

Abstract: A network node in a cellular telecommunications system hands over responsibility for serving a wireless communication equipment from a serving cell to a target cell, wherein the wireless communication equipment is situated in a first aircraft that is in-flight. An aircraft position, an aircraft velocity, and an aircraft direction are determined. For each candidate cell of a number of candidate cells, a level of beam distortion that would result from a beam directed from the candidate cell to the first aircraft is predicted. The target cell is selected from the candidate cells by identifying which of the candidate cells has a least amount of predicted beam distortion. The target cell is then signaled to prepare for a handover of responsibility for serving the wireless communication equipment.

Abstract: Delivery of a plurality of messages by a satellite is scheduled taking energy into account. An amount of time needed to deliver each of the plurality of messages received from a plurality of ground sources and intended for a plurality of ground recipients at respective different destinations is estimated based on the size of each of the messages. Each different destination has an associated contact time window during which the satellite will be in range of the ground recipients at that destination. An amount of energy that will be available from a power source for delivering the messages during each contact window is determined. Delivery of the plurality of messages to the ground recipients is scheduled such that a total time for delivery of the messages is minimized.

Abstract: In some embodiments, a disclosed method involves receiving, by a source gateway, a call request from a source user terminal for establishing a call with a destination user terminal. The method further involves determining, by a source client proxy of the source gateway, a capability related to a parameter(s) of the source user terminal and a capability related to a parameter(s) of the destination user terminal. Also, the method involves sending, by the source client proxy, a call capability offer to a destination gateway based on the determined capabilities. Additionally, the method involves determining, by a destination client proxy of the destination gateway, whether the destination user terminal can support the call capability offer. Also, the method involves sending, by the destination client proxy, a call initiation message to the destination user terminal, when the destination client proxy determines that the destination user terminal can support the call capability offer.

Abstract: A spacecraft includes a payload subsystem including a digital channelizer. The digital channelizer provides at least a portion of spacecraft command or telemetry functionality. The spacecraft may optionally also include a telemetry and command (T&C) subsystem, the T&C subsystem including one or more of a command receiver, a command decoder, a telemetry encoder and a telemetry transmitter. The digital channelizer may be communicatively coupled with at least one of the command receiver, the command decoder, the telemetry transmitter and the telemetry encoder.

Abstract: A system is provided for coordinating inter-satellite handoff in a telecommunications system that includes first and second communication satellites and a communications apparatus. The communications apparatus is configured to generate commands for transmission to the first communication satellite and the second communication satellite to steer respectively first and second spot beams to track and communicate with a user terminal during respective time intervals. The communication interface is also configured to determine a trajectory of the user terminal and a predicted handoff point on the trajectory for handoff between the satellites in which the second spot beam is automatically steered to the handoff point or a point proximate thereto no sooner than the user terminal is within the second spot beam when steered to the predicted handoff point.

Abstract: A reconfigurable TDD-FDD multiplexer operates in a TDD mode and a FDD mode. The TDD-FDD multiplexer includes an interdigital quadruplexer in series with a one-pole three-throw RF switch. The interdigital quadruplexer includes of two V-band filters, connectable to a transmitter and a receiver, respectively, for TDD mode duplexing, and two E-band filters, connectable to a transmitter and a receiver, respectively, for FDD mode duplexing. The E-band filters include an E-band transmitting filter that passes an E-band transmitting frequency band, and an E-band receiving filter that passes for an E-band receiving frequency band offset from the E-band transmitting frequency band. Switching between the V-band receiving filter and V-band transmitting filter enables TDD duplexing functionality at V-band frequencies. Switching to the two E-band filters enables FDD duplexing functionality at E-band frequencies.

Abstract: The present invention relates to a method in a radio network node of a cellular network, for controlling admission of a UE in a cell covering a region. The method comprises obtaining (710) a location of the UE, comparing (720) information related to a geometric boundary of the region and the obtained location of the UE, and determining (730) whether to admit the UE in the cell based on the comparison.

Abstract: Described herein are space based subsystems of a satellite, and related methods, for use in producing an optical feeder downlink beam in dependence on RF service uplink beams received from service terminals within a specified RF frequency range. Beneficially certain embodiments eliminate the need for any type of frequency conversion equipment in the spaced based subsystem that is used to produce the optical feeder downlink beam. Also described herein are ground based subsystems, and related methods, for use in transmitting an optical feeder uplink beam to a satellite configured to receive the optical feeder uplink beam and in dependence thereon produce and transmit a plurality of RF service downlink beams within a specified RF frequency range to service terminals. Also described herein is are space based subsystems of a satellite, and related methods, for use in transmitting a plurality of RF service downlink beams to service terminals.

Abstract: A base station and terminal use methods of obtaining synchronization and system information in a wireless communication system. An operation of a base station includes generating a synchronization signal to be transmitted through a Synchronization Channel (SCH), generating a broadcast signal to be transmitted through a Broadcast Channel (BCH), and transmitting repetitively the SCH and the BCH by performing beamforming on the channels with different transmission beams.

Abstract: Techniques for supporting communication in a heterogeneous network are described. In an aspect, communication in a dominant interference scenario may be supported by reserving subframes for a weaker base station observing high interference from a strong interfering base station. In another aspect, interference due to a first reference signal from a first station (e.g., a base station) may be mitigated by canceling the interference at a second station (e.g., a UE) or by selecting different resources for sending a second reference signal by the second station (e.g., another base station) to avoid collision with the first reference signal. In yet another aspect, a relay may transmit in an MBSFN mode in subframes that it listens to a macro base station and in a regular mode in subframes that it transmits to UEs. In yet another aspect, a station may transmit more TDM control symbols than a dominant interferer.

Abstract: A payload for a repeater satellite of a communication system. The repeater satellite being placed into drift orbit above the surface of a celestial body. The payload being configured to repeat data received from a stationary satellite above the surface of the celestial body towards a terminal substantially at the surface of the celestial body, and to repeat data received from the terminal towards the stationary satellite. The payload is further configured to use a single frequency band for repeating data towards the stationary satellite, referred to as uplink transmission, and for repeating data towards the terminal, referred to as downlink transmission, as well as to time-division multiplex the uplink transmissions and the downlink transmissions. Also, a telecommunication system includes a repeater satellite provided with aforesaid payload, and a satellite communication method for transferring data between the terminal and the stationary satellite.

Abstract: A method and an apparatus for transmitting and receiving privacy information are disclosed. The method includes transmitting a connection (ATTACH) message including a terminal type indication, privacy type, privacy indication, and transmission period, receiving a connection complete (ATTACH ACCEPT) message; and transmitting location information. According to the embodiments of the present invention, the method and the apparatus for transmitting and receiving privacy information can provide an adequate protection for the privacy information in a terminal.

Abstract: An ear worn brainwave brain activity dual phone communication device that works independently for enabling human beings to communicate with their mind, move objects and machines by way of their monitored brain activity. The communication system is sufficiently independent to initiate and receive communication without requiring a mobile phone, since contact information is stored in the communication device. The communication system performs functions with an audible command or brainwave brain activity such as initiating communication, accessing content, moving and controlling other machines and computer devices, accessing tools.

Abstract: A system and method for position determination using low earth orbit satellites. A mobile terminal affixed to an asset initiates a collection of global positioning system satellite measurements (e.g., code phase) based on a hardware trigger generated by a low earth orbit satellite modem. Timing information reflective of the time of the hardware trigger pulse is transmitted to an operations center along with the global positioning system satellite measurements to enable the operations center to determine a position of the mobile terminal.

Abstract: A portable information device including a body, a position information portion that is provided in the body and that outputs position information, an image sensor that is provided in the body, a display system that is provided in the body and that displays, on a local field in a screen field, relevant information based on the position information such that the displayed relevant information is overlapped on a real-time image, an input portion that is provided on the body and, by use of which user operates an icon, the icon being displayed on the local field such that the displayed icon is overlapped on the real-time image and an imaging button that is provided, separately from the input portion, on the body and that is operated by user to capture a subject image via the image sensor.

Abstract: The present invention provides systems and methods for improved data communication between communication terminals such as a base station and an unmanned aerial vehicle. In some instances, the systems and methods described herein provide robust transmission uplink data such as control data and wideband transmission of downlink data such as image data or other sensor data, while avoiding interference between the uplink data transmission and the downlink transmission.

Abstract: A method of transmitting a broadcast signal includes encoding mobile data for FEC (Forward Error Correction); encoding signaling information for signaling the mobile data; allocating the encoded mobile data and signaling data into a transmission frame; and transmitting the broadcast signal including the transmission frame, wherein the transmission frame includes a service signaling table having service_type information identifying a type of a service of the mobile data and hidden information indicating whether the service of the mobile data is hidden or not.

Abstract: Disclosed embodiments may help an aerial vehicle network to provide substantially continuous service in a given geographic area. An example method may be carried out at an aerial vehicle that is at a location associated with the first geographic area in an aerial network that includes a plurality of geographic areas. The balloon may determine that it should update its vehicle-state in accordance with a vehicle-state profile for the first geographic area. Then, in response, the balloon may determine the vehicle-state profile for the first geographic area, which may include one or more state parameters for balloons operating in the first geographic area. The balloon may then operate according to the vehicle-state profile for the first geographic area.

Abstract: The present invention relates to a method for granting medium access to a node in a wireless network, the network comprising at least two nodes, and the method comprising the step of determining, for one of the at least two nodes, a medium access rate to be used, a medium access rate determining how often a node transmits data throughout the network, wherein the rate is determined as being different from one node to another and dependent on the number of neighbors of a node. The invention also relates to a wireless radio network comprising at least two nodes, wherein a medium access rate to be used by a node is determined as being different from one node to another and dependent on the number of neighbors of a node, a medium access rate determining how often a node transmits data throughout the network.

Abstract: A satellite support and administration system includes a web based portal to allow widespread user access to advanced satellite technology at extremely low costs. The system supports the sequential launch of increasingly sophisticated satellites having limited life spans. Each satellite is equipped with a powerful array of sensors for space based measurement of scientifically and commercially important phenomena. A ground based platform supports and encourages the development of software and custom applications to operate experiments utilizing the processors and sensor array on the satellite.

Abstract: Embodiments include an overlay multicast network. The overlay multicast network may provide a set of features to ensure reliable and timely arrival of multicast data. The embodiments include a congestion control system that may prioritize designated layers of data within a data stream over other layers of the same data stream. Each data stream transmitted over the network may be given an equal share of the bandwidth. Addressing in routing tables maintained by routers may utilize summarized addressing based on the difference in location of the router and destination address. Summarization levels may be adjusted to minimize travel distances for packets in the network. Data from high priority data stream layers may also be retransmitted upon request from a destination machine to ensure reliable delivery of data.

Abstract: Methods and systems for power optimization of a global navigation satellite system may comprise receiving LEO RF satellite signals utilizing a LEO satellite signal receiver path (LEO Rx) in a wireless communication device (WCD). Circuitry in the LEO Rx may be configured in a powered down state based on a sleep schedule. A location of the wireless communication device may be determined utilizing LEO signals received by the LEO Rx. The sleep schedule may be based on a desired accuracy of the determined location, the relative strengths of signals received from a plurality of LEO satellites, a relevance factor generated by a position engine and communicated to the sort module, or a desired power level of the WCD. The relative strengths of received signals may be compared utilizing a sort module in a LEO demodulator in the LEO satellite signal receiver path.

Abstract: A satellite communications system includes a plurality of satellites that generate communications data over a plurality of channels. A plurality of antennas receives the communications data over the plurality of channels generated by the plurality of satellites. Each of the antennas receives a separate signal from each of the plurality of satellites over the channels. A converter digitizes each of the separate signals from each of the plurality of satellites received at the plurality of antennas. A processor forms separate digital beams from each of the separate signals digitized by the converter.

Abstract: A smart phone senses audio, imagery, and/or other stimulus from a user's environment, and acts autonomously to fulfill inferred or anticipated user desires. In one aspect, the detailed technology concerns phone-based cognition of a scene viewed by the phone's camera. The image processing tasks applied to the scene can be selected from among various alternatives by reference to resource costs, resource constraints, other stimulus information (e.g., audio), task substitutability, etc. The phone can apply more or less resources to an image processing task depending on how successfully the task is proceeding, or based on the user's apparent interest in the task. In some arrangements, data may be referred to the cloud for analysis, or for gleaning. Cognition, and identification of appropriate device response(s), can be aided by collateral information, such as context. A great number of other features and arrangements are also detailed.

Abstract: A satellite communication system between a source and a destination over multiple satellite communications paths including first identifying the link performance established in multiple spectrums, performing a link comparison among the multiple spectrums (for example C-, Ku-, or Ka-Band) in order to determine a spectrum link that provides the highest throughput within an acceptable reliability criteria, and switching among the multiple spectrum links to provide that determined spectrum link between the source and the destination.

Abstract: An embodiment of the time-variant channel estimation in an OFDM transmission system envisages the operations of: a) determining the received signal vector Yj,k for one or more of R receiving antennas, j=1, . . .

Abstract: A method of communicating data between a first transceiver and any of a plurality of second transceivers, wherein areas serviced by each of the plurality of second transceivers either overlap or are adjacent. The method comprises operating the first transceiver and the plurality of second transceivers in an overlapping frequency range. Each of the plurality of second transceivers operates in a time period different from a time period of another of the plurality of second transceivers.

Abstract: A system that incorporates the subject disclosure may include, for example, a method for measuring a power level in at least a portion of a plurality of resource blocks occurring in a radio frequency spectrum, wherein the measuring occurs for a plurality of time cycles to generate a plurality of power level measurements, calculating a baseline power level according to at least a portion of the plurality of power levels, determining a threshold from the baseline power level, and monitoring at least a portion of the plurality of resource blocks for signal interference according to the threshold. Other embodiments are disclosed.