Apparatus and method in wireless communication system

An apparatus on user equipment side in a wireless communication system, the apparatus comprising:

• circuitry configured to:
• receive configuration information comprising retransmission number relevant information, wherein the retransmission number relevant information indicates information relevant to a number of retransmissions of signal transmission between user equipments performing device to device communication;
• control, according to the received retransmission number relevant information, repeatedly transmitting a signal to a counterpart user equipment;
• receive indication information of transmission resources allocated to perform device to device communication with the counterpart user equipment, the indication information of the transmission resources comprising a first transmission resource indication indicating first transmission resource for first signal transmission;
• and
• control, based on the indication information of the transmission resources, to transmit the signal to the counterpart user equipment using corresponding transmission resources,
• wherein the indication information of the transmission resources further indicates retransmission resources for signal retransmission of the user equipment, and a frequency span between a retransmission resource and a last transmission resource satisfies a predetermined condition, and
• wherein the frequency span is greater than a predetermined threshold and less than a smallest cell bandwidth.

An apparatus on user equipment side in a wireless communication system, the apparatus comprising:

• circuitry configured to:
• receive configuration information comprising retransmission number relevant information, wherein the retransmission number relevant information indicates information relevant to a number of retransmissions of signal transmission between user equipments performing device to device communication;
• control, according to the received retransmission number relevant information, receiving all signals transmitted from a counterpart user equipment;
• receive indication information of transmission resources allocated to perform device to device communication with the counterpart user equipment, the indication information of the transmission resources comprising a first transmission resource indication indicating first transmission resource for first signal transmission;
• and
• control, based on the indication information of the transmission resources, to receive a signal among all of the received signals from the counterpart user equipment using corresponding transmission resources,
• wherein the indication information of the transmission resources further indicates retransmission resources for signal retransmission of the counterpart user equipment, and a frequency span between a retransmission resource and a last transmission resource satisfies a predetermined condition, and
• wherein the frequency span is greater than a predetermined threshold and less than a smallest cell bandwidth.

A method in a wireless communication system, comprising:

• generating configuration information for a user equipment performing device to device communication, the configuration information comprising retransmission number relevant information, wherein the retransmission number relevant information indicates information relevant to a number of retransmissions of signal transmission between user equipments performing device to device communication;
• transmitting the generated configuration information to the user equipment performing device to device communication;
• allocating transmission resources for signal transmission of the user equipment performing device to device communication;
• and
• transmitting indication information of the transmission resources to a transmitting user equipment performing device to device communication,
• wherein the transmission resources comprise a first transmission resource for first signal transmission of the user equipment performing device to device communication,
• wherein the transmission resources allocated by a resource scheduler further comprise retransmission resources for signal retransmission of the user equipment performing device to device communication, and a frequency span between a retransmission resource and a last transmission resource satisfies a predetermined condition, and
• wherein the frequency span is greater than a predetermined threshold and less than a smallest cell bandwidth.

A method in a wireless communication system, comprising:

• receiving configuration information comprising retransmission number relevant information, wherein the retransmission number relevant information indicates information relevant to a number of retransmissions of signal transmission between user equipments performing device to device communication;
• and
• controlling, according to the received retransmission number relevant information, to repeatedly transmit a signal to a counterpart user equipment or to receive all signals transmitted from a counterpart user equipment;
• receiving indication information of transmission resources allocated to perform device to device communication with the counterpart user equipment, the indication information of the transmission resources comprising a first transmission resource indication indicating first transmission resource for first signal transmission;
• and
• controlling, based on the indication information of the transmission resources, to transmit the signal to the counterpart user equipment using corresponding transmission resources,
• wherein the indication information of the transmission resources further indicates retransmission resources for signal retransmission of the user equipment, and a frequency span between a retransmission resource and a last transmission resource satisfies a predetermined condition, and
• wherein the frequency span is greater than a predetermined threshold and less than a smallest cell bandwidth.