Embodiments of the present disclosure relate to a method, terminal device and apparatus for physical random access channel (PRACH) power control and a method, network device and apparatus for transmitting parameters of PRACH power control. In an embodiment of the present disclosure, the method of PRACH power control may comprise determining a transmission power of PRACH preamble based on a power constriction of a terminal device, a preamble received target transmission power and a downlink path loss on a beam level. With embodiments of the present disclosure, it could provide a power control for PRACH with improved accuracy, which increases the success possibility of random access attempt and interferences to other devices.

Methods, systems and apparatus are described for enhanced node communication within a wireless node network having nodes and a server. The method begins with a first node associating with a second according to a server tracked logical connection authorized by the server. The first node captures relevant node information including shared data from another of the nodes. The first node transmits, when operating in a first connectivity mode, at least the shared data to the server using the second node operating as an intermediary for indirect communication with the server. The first node transmits, when operating in a second connectivity mode, at least the shared data to the server without using the second intermediary node by having the first node transmitting a message with at least the shared data to the server while avoiding the need to first send the message to the second node during transit to the server.

Methods, systems and apparatus are described for enhanced node communication within a wireless node network having nodes and a server. The method begins with a first node associating with a second according to a server tracked logical connection authorized by the server. The first node captures relevant node information including shared data from another of the nodes. The first node transmits, when operating in a first connectivity mode, at least the shared data to the server using the second node operating as an intermediary for indirect communication with the server. The first node transmits, when operating in a second connectivity mode, at least the shared data to the server without using the second intermediary node by having the first node transmitting a message with at least the shared data to the server while avoiding the need to first send the message to the second node during transit to the server.

Aspects of the subject disclosure may include, for example, a method in which a processing system of a first network element receives information indicating that a user equipment (UE) support dual connectivity with first and second inter-radio access technologies (IRATs). The UE is enabled to communicate with a second network element using the second IRAT. The system provides to the UE uplink power configurations for data transmissions between the UE and the network elements, and performs a closed loop control procedure that includes determining a first transmit power control (TPC) value for first data transmissions from the UE and a second TPC value for second data transmissions from the UE, and adjusting the first TPC value and the second TPC value to allocate UE uplink transmission power between the first IRAT and the second IRAT. Other embodiments are disclosed.

The present invention relates to an apparatus and method for controlling uplink transmission power in a multiple element carrier wave system. The method for controlling uplink transmission power by a terminal in a multiple element carrier wave system includes the steps of: generating an uplink signal to be transmitted in a first serving cell; receiving, from a base station, random access start information for commanding the start of a random access procedure for a second serving cell; calculating the estimated surplus power from first transmission power scheduled for an uplink signal transmission, and second transmission power scheduled for a transmission of a PRACH to which a random access preamble is mapped; and when the estimated surplus power is smaller than a threshold power, adjusting the first transmission power or the second transmission power on the basis of power allocation priority.

The present invention relates to an apparatus and method for controlling uplink transmission power in a multiple element carrier wave system. The method for controlling uplink transmission power by a terminal in a multiple element carrier wave system includes the steps of: generating an uplink signal to be transmitted in a first serving cell; receiving, from a base station, random access start information for commanding the start of a random access procedure for a second serving cell; calculating the estimated surplus power from first transmission power scheduled for an uplink signal transmission, and second transmission power scheduled for a transmission of a PRACH to which a random access preamble is mapped; and when the estimated surplus power is smaller than a threshold power, adjusting the first transmission power or the second transmission power on the basis of power allocation priority.

The present disclosure relates to a method (30) relating to handover in a communication system (1). The method (30) comprises establishing (31) that a communication device (3) is involved in a handover process from a first cell(C1) to a second cell(C2); and increasing (33) transmission power of a scheduling assignment specific for the communication device (3). The disclosure also relates to a system, computer program and computer program products.

The present disclosure relates to a method (30) relating to handover in a communication system (1). The method (30) comprises establishing (31) that a communication device (3) is involved in a handover process from a first cell(C1) to a second cell(C2); and increasing (33) transmission power of a scheduling assignment specific for the communication device (3). The disclosure also relates to a system, computer program and computer program products.

In a wireless communication system in which a plurality of base stations each forming a directional beam in one direction are disposed along a predetermined path, each base station estimates a distance from installed in a mobile body moving along the path if the TE enters a cell area of the corresponding base station; and controls the transmission power using a distance from the estimated TE so that a difference between received signal strength of the corresponding base station and the received signal strength of neighboring base stations measured by the TE in a cell boundary area between the base stations does not exceed a predetermined threshold value.

A method for transmitting an uplink control channel by a terminal in a wireless communication system that supports a plurality of serving cells for the terminal, comprises a step of receiving information on a plurality of serving cells include a P-cell and at least one S-cell constructed for the terminal and timing division duplex (TDD) downlink/uplink setup information for each of the plurality of serving cells, and a step of, in case of transmitting the plink control channel via a specific subframe interval, transmitting the uplink control channel through a first S-cell allocated as an uplink subframe with respect to the specific subframe interval when it is determined, based on the TDD downlink/uplink setup information, that the specific subframe interval is allocated as a downlink subframe with respect to the P-cell.