An operation method of an electronic device includes determining whether a first communication module based on a first radio access technology (RAT) and a second communication module based on a second RAT operate in a connected state; determining whether a combination of a first band used by the first communication module and a second band used by the second communication module is a combination causing interference; and if the combination of the first band and the second band is a combination causing interference, transmitting a signal requesting to change one of the first band or the second band. The interference is caused by at least one transmission signal of the first RAT or at least one other signal derived from the at least one transmission signal.

A small cell control method includes: acquiring information on a plurality of cells; identifying at least one candidate of a small cell by determining whether one cell is overlaid on another cell based on the information on the plurality of cells; identifying at least one small cell to control transmitting power among the plurality cells; and controlling the identified at least one small cell.

Techniques for performing path loss (PL) compensation in coordinated multipoint (CoMP) systems are provided. A method for wireless communications by a user equipment (UE) is provided. The method generally includes selecting, from a plurality of transmission points involved in uplink (UL) coordinated multipoint (CoMP) operations with the UE, a transmission point to associate with for path loss (PL) compensation, and adjusting power of one or more transmissions based on path loss measured based on the selected transmission point

A base station includes a transmitter which transmits an offset value for a transmission power of a sounding reference signal (SRS) to a terminal apparatus; and a receiver which receives the SRS at the transmission power controlled by the terminal apparatus. The offset value used to control the transmission power is set within one of a first offset setting range having a first lower limit value and a first upper limit value and a second offset setting range having a second lower limit value and a second upper limit value. A difference between the first and second lower limit values equals a difference between the first and second upper limit values. A step width of the offset values within the first offset setting range equals a step width of the offset values within the second offset setting range. The SRS is a periodic SRS (P-SRS) or an aperiodic SRS (A-SRS).

A system for allocating resources in a communications network includes a plurality of access points, where each access point in the plurality of access points is in communication with one or more user devices. The system also includes a central controller in communication with the plurality of access points. The central controller is configured to receive traffic information and channel information for access pointuser device links in the communications network. The central controller is also configured to receive an intensity of independent homogeneous Poisson traffic intended for the one or more user devices. The central controller is further configured to determine a joint resource allocation based at least in part on the received traffic and channel information and the intensity of independent homogeneous Poisson traffic, where the joint resource allocation is determined with an algorithm.

Embodiments use the principles of self-organizing networks to allocate resources to allow spectrum owners to share spectrum with wireless carriers according to defined license conditions. A spectrum licensee holds the licensing conditions of the spectrum licensed by the spectrum owners. This licensed spectrum is referred to as secondary spectrum. A self-organizing network server requests access to secondary spectrum. The spectrum licensee grants access to the secondary spectrum along with the licensing conditions for access. The self-organizing network server monitors the conditions associated with the license and/or delegates the responsibility for monitoring conditions associated with the license to others. When the license conditions are met, enhanced Node B systems may begin using the secondary spectrum according to the license conditions. When the license conditions are no longer met, enhanced Node B systems discontinue use of the secondary spectrum.

[Object] To provide an arrangement that can prevent the adverse interference when a frequency channel is secondarily used, at low cost.

[Solution] Provided is a communication control device including: an obtaining unit configured to, in a radio communication system including a primary base station to which a primary terminal is connected, and a secondary base station to which a secondary terminal is connected by secondarily using a frequency channel for the primary base station, obtain at least one of a quality report containing a communication quality indicator measured by the primary terminal and a quality report containing a communication quality indicator measured by the secondary terminal; and an interference control unit configured to instruct the secondary base station to reduce transmission power, when it is determined that adverse interference is present in the radio communication system, based on the communication quality indicator contained in the quality report obtained by the obtaining unit.

Technology for a user equipment (UE) operable to adjust a receiver timing is disclosed. The UE can decode a plurality of channel-state information reference signals (CSI-RSs) received from a plurality of cooperating nodes, wherein the plurality of cooperating nodes are included in a coordination set of a Coordinated MultiPoint (CoMP) system. The UE can generate a plurality of received RS timings from the plurality of CSI-RSs, wherein the received RS timings represent timings from the plurality of cooperating nodes. The UE can determine a composite received RS timing from the plurality of received RS timings. The UE can adjust the receiver timing based on the composite received RS timing.

User equipment includes an antenna, a controller, a transmitter, and a receiver. The transmitter sends a first radio frequency signal for communication with a primary cell to the antenna according to a first timing advance set by the controller, and sends a second radio frequency signal for communication with a secondary cell to the antenna according to a second timing advance set by the controller. The receiver sends received data to the controller including information regarding at least one of the first timing advance and the second timing advance. The first timing advance indicating a first uplink transmission timing alignment value and the second timing advance indicating a second uplink transmission timing alignment value.

Techniques for dynamically determining coverage area and data throughput in a heterogeneous network are discussed herein. In some examples, a base station can use frequency resources from a Citizens Broadband Radio Service band provided that such use does not cause harmful interference for incumbent users. For example, to avoid interfering with an incumbent device while maintaining transmission, an algorithm may be deployed to dynamically determine data throughput for the base station and connected user equipment based on interference level and traffic type. The base station can receive interference information with uplink feedback from the user equipment. Interference information can also be used to configure the base station to dynamically adjust its data coverage area, for example, by varying a transmission power. As the conditions at a base station change over time (e.g., hourly, daily, weekly, etc.), data coverage area can be reconfigured at the base station.