Method and apparatus for power control and multilplexing for device to device communication in wireless cellular communication system
Methods and apparatuses for controlling power in a communication system are provided. A first user equipment (UE) receives power control related information from a base station. Data is transmitted to a second UE based on a transmission power, if there is no uplink transmission. The transmission power is based on a first transmission power determined by a number of assigned resource blocks, a path loss, and the received power control related information.
1. A method of controlling power in a communication system, the method comprising:
receiving, by a first user equipment (UE), power control related information from a base station; and
transmitting data, from the first UE, to a second UE based on a transmission power, if there is no uplink transmission from the first UE,
wherein the transmission power is based on a first transmission power determined by a number of assigned resource blocks, a path loss, and the received power control related information.
2. The method of claim 1 , wherein the transmission power is further based on a second transmission power being a maximum available transmission power for the data.
3. The method of claim 2 , wherein the transmission power is a smaller one among the first transmission power and the second transmission power.
4. The method of claim 1 , wherein the data comprises at least one of a discovery signal, control information, and data information.
5. The method of claim 1 , wherein the data is transmitted on a subframe configured for transmission of the data.
6. The method of claim 1 , wherein the path loss is calculated for a serving cell based on information provided by signalling from the base station.
7. A first user equipment (UE) in a communication system, comprising:
a transceiver configured to transmit and receive signals; and
a controller configured to control the transceiver to:
receive power control related information from a base station; and
transmit data to a second UE based on a transmission power, if there is no uplink transmission from the first UE,
wherein the transmission power is based on a first transmission power determined by a number of assigned resource blocks, a path loss, and the received power control related information.
8. The first UE of claim 7 , wherein the transmission power is further based on a second transmission power being a maximum available transmission power for the data.
9. The first UE of claim 8 , wherein the transmission power is a smaller one among the first transmission power and the second transmission power.
10. The first UE of claim 7 , wherein the data comprises at least one of a discovery signal, control information, and data information.
11. The first UE of claim 7 , wherein the data is transmitted on a subframe configured for transmission of the data.
12. The first UE of claim 7 , wherein the path loss is calculated for a serving cell based on information provided by signalling from the base station.