Exemplary embodiments described herein include systems, methods, and processing nodes for reducing frequency interference in a wireless communication system. A high-power user equipment (HPUE) operating in an enhanced power mode with a first access node can be detected beyond the range of a low-power user equipment (LPUE) or a HPUE operating in a standard power mode. The HPUE can be handed over to a second, neighboring access node. A maximum allowable power of the HPUE can be reduced so that the HPUE is operating in a standard power mode.

The present disclosure relates to a transmission power control method and device capable of dynamically selecting optimal transmission power for the nodes in wireless network considering its surrounding interference. An embodiment comprises calculating a reduced transmitted power which will cause a corresponding reduced received power, such that: (a) transmitter interface and receiver interface can maintain connectivity of the active link with the reduced transmitted power, in the antenna direction between transmitter interface and receiver interface; (b) the reduced transmitted power does not create additional link-interference edges from any other active link, even if the transmission power of the other active link is maintained, in the antenna direction between the transmitting interface of the other active link and the receiver interface; and (c) the reduced transmitted power does not create additional hidden nodes, such that a CSRange of the reduced transmission power is still sufficient to inhibit transmission by any other interfering network node interface, in the antenna direction between said any other interfering network node and the receiver interface.

Methods, systems, computer-readable media, and apparatuses for to managing use of a satellite positions system (SPS) receiver in conjunction with one or more radio access technology (RAT) transmitters. In certain embodiments, a controller can be used to prioritize reception by the SPS receiver over transmission by the one or more RAT transmitters.

Wireless communication devices may directly communicate within groups of wireless communication devices using Layer-2 communications to implement push-to-talk type applications. In one implementation, a method may include generating a floor request signaling message to take control of a communication channel for a group. After transmitting data relating to the communications, a floor release signaling message may be generated and transmitted a number of times.

Methods, apparatus, and systems are described relating to wireless communications. A base station may transmit a message comprising a subframe allocation bitmap indicating a plurality of subframes. The indicated subframes may correspond to Almost Blank Subframes transmitted by the base station. The base station may transmit a message to a wireless device indicating measurement subframe allocation bitmaps. A first measurement subframe allocation bitmap may exclude the plurality of subframes. A second measurement subframe allocation bitmap may exclude subframes of the first measurement subframe allocation bitmap. These and other features are described.

A communications system includes cellular devices and cellular base stations in communication with the cellular devices in a first frequency band. A non-geostationary satellite may include sensing circuitry operable in a second frequency band susceptible to interference from the first frequency band. Each cellular base station may include a controller and a transceiver cooperating therewith. The controller may be configured to store satellite path data for the non-geostationary satellite, determine when the satellite path data indicates interference would otherwise be experienced by the non-geostationary satellite, and implement an interference mitigation action in cooperation with associated cellular devices based upon the satellite path data indicating interference would otherwise be experienced by the non-geostationary satellite.

One embodiment of the present specification provides a method for performing a random access procedure. The method can comprise the steps of: generating a random access preamble to a first cell; generating a random access preamble to a second cell; determining whether the random access preamble to the first cell and the random access preamble to the second cell are triggered so as to be simultaneously transmitted in the same subframe; selecting the random access preamble to any one of the cells according to a pre-set priority when triggered so as to be simultaneously transmitted; and transmitting the any one selected random access preamble.

The method comprises, at a multiple endpoint power level orchestrator, assigning a first group identifier to a first endpoint device and assigning a second group identifier to a second endpoint device. The first endpoint device includes a first directional antenna and the second endpoint device includes a second directional antenna. Moreover, the first directional antenna provides a first coverage area and the second directional antenna provides a second coverage area. Additionally, the first and second coverage areas provide an overlapping coverage area. The method further includes obtaining a first collision report including the first group identifier from the first endpoint device and obtaining a second collision report including the second group identifier from the second endpoint device. The method further includes providing respective transmission power level adjustments to one or more of the first or second endpoint devices according to satisfaction of a performance metric.

The present disclosure relates to a transmission power control method and device capable of dynamically selecting optimal transmission power for the nodes in wireless network considering its surrounding interference. An embodiment comprises calculating a reduced transmitted power which will cause a corresponding reduced received power, such that: (a) transmitter interface and receiver interface can maintain connectivity of the active link with the reduced transmitted power, in the antenna direction between transmitter interface and receiver interface; (b) the reduced transmitted power does not create additional link-interference edges from any other active link, even if the transmission power of the other active link is maintained, in the antenna direction between the transmitting interface of the other active link and the receiver interface; and (c) the reduced transmitted power does not create additional hidden nodes, such that a CSRange of the reduced transmission power is still sufficient to inhibit transmission by any other interfering network node interface, in the antenna direction between said any other interfering network node and the receiver interface.

The present invention discloses a power control apparatus and method in a wireless communication system. According to the present invention, among FUE units neighboring to an MUE unit of a victim cell, an FUE unit of an aggressor cell may be derived on the basis of information on RSRP of the FUE unit registered in a closed subscriber group, and a threshold interference value of the FUE unit. Also, power of the derived FUE unit of the aggressor cell may be gradually decreased until an interference of the MUE unit of the victim cell becomes greater than a predefined threshold interference value, and an SINR of the FUE unit of the aggressor cell becomes equal to or greater than a target SINR. Accordingly, CCI can be reduced in a heterogeneous network environment, data transmission speed can be improved, and latency time can be reduced by reducing feedback time.