A method for performing transmission or reception by a first communication node (511) in at least one of: a first set of time-frequency resources (1201) and a second set of time-frequency resources (1202) in a frame (1200). The first and the second set of time-frequency resources (1201, 1202) are reserved for communication of reference signal and/or control information in a pre-arranged direction of: transmission and reception to or from one or more second communication nodes (512). The first communication node determines (1301) that the direction of communication of at least one of the first and second set is to be switched for at least one frame (1200). The first communication node also performs (1306) transmission or reception of control information in at least one of the first and second set of time-frequency resources (1202) according to the determined switched direction to or from, one or more third communication nodes (513).

Various devices, methods, and processes are provided for handling conflicting and/or redundant power control and triggering information for transmitting reference signal(s) such as sounding reference signal (SRS) using carrier aggregation (CA). A user equipment (UE) receives a first downlink control information (DCI) and a second DCI including SRS control information that is in conflict with that of the first DCI, for controlling SRS transmission on a component carrier (CC). The UE determines a resolution to reconcile the conflict between the DCIs. Then the UE can transmit an SRS on the CC in accordance with the resolution.

A tracking device broadcasts beacon signals that are separated in time by broadcast intervals. The tracking device determines the broadcast intervals based on a behavior model. The behavior model specifies one or more conditions, such as times of day within a 24-hour day, and associates a usage probability with each condition. A higher usage probability causes the tracking device to broadcast beacon signals at shorter broadcast intervals. A mobile device in communication with the tracking device can reconfigure the behavior model, either by modifying portions of the behavior model or by replacing the behavior model with a different behavior model. This allows the behavior model to adapt to different circumstances, such as different usage patterns during weekdays, weekends, and vacations.

Device-to-Device (D2D) interference coordination methods and apparatuses, a base station, and a User Equipment (UE) are provided. A base station acquires D2D transmission Tx power information (S302). The D2D transmission Tx power information is used for indicating Tx power of D2D transmission to be scheduled over a corresponding radio resource or indicating power information causing interference to D2D transmission over a corresponding radio resource. The base station conducts interference coordination processing according to the D2D transmission Tx power information (S304).

The signal transmission method according to the present invention comprises: determining the beam width of a beam to be transmitted; based on the beam width, determining relative narrowband transmit power (RNTP) information indicating whether or not to transmit, to a preset resource block, transmission power equal to or greater than a preset critical value; transmitting the RNTP information to an adjacent cell; and transmitting the generated beam to the resource block according to the RNTP information. Accordingly, provided is a method for setting a relative narrowband transmit power (RNTP) value so as to control interference between cells in a communication system.

Provided are a method and device for uplink power control. A user terminal performing the method includes: a receiving unit configured to receive signature information for the user terminal from a base station; and a control unit configured to determine a transmission power of the user terminal according to the received signature information.

Network device coordination schemes allocate resources, configure transmission policies, and assign users to utilize resources. A set of transmission policies is generated to services users while each user maintains a throughput threshold. The set of transmission policies can be altered to alter a network energy efficiency. The set of transmission polices can be altered based on energy consumption, data throughput, channel characteristics, measured interference, and the like.

A wireless device may receive one or more messages comprising configuration parameters for a first logical channel in a plurality of logical channels. The configuration parameters indicate a first mapping restriction of the first logical channel to at least one first radio resource types in a plurality of radio resource types. The wireless device receives an uplink grant indicating radio resources of a radio resource type in the plurality of radio resource types. The wireless device restart a first buffer status report (BSR) retransmission timer in response to the uplink grant meeting first criteria. The first BSR retransmission timer is employed for triggering a BSR indicating an amount of data comprising data of a buffer of the first logical channel. The first criteria comprise the radio resource type being of one of the at least one first radio resource type. The wireless device triggers a BSR transmission in response to the first BSR retransmission timer expiring.

Methods of powering a radio that is mounted on a tower of a cellular base station are provided in which a direct current (“DC”) power signal is provided to the radio over a power cable and a voltage level of the output of the power supply is adjusted so as to provide a substantially constant voltage at a first end of the power cable that is remote from the power supply. Related cellular base stations and programmable power supplies are also provided.

Methods of powering a radio that is mounted on a tower of a cellular base station are provided in which a direct current (“DC”) power signal is provided to the radio over a power cable and a voltage level of the output of the power supply is adjusted so as to provide a substantially constant voltage at a first end of the power cable that is remote from the power supply. Related cellular base stations and programmable power supplies are also provided.