Method for executing random access procedure in wireless communication system and apparatus therefor
Disclosed is a method for a terminal to execute a random access procedure in a wireless communication system. Specifically, the method comprises the steps of: transmitting a random access preamble message to one or more nodes; receiving a random access response message from a serving cell from among the one or more nodes; and transmitting an uplink signal to a different node from among the one or more nodes, wherein the random access response message comprises information for transmitting the uplink signal to the different node.
1. A method of a user equipment performing a random access procedure in a wireless communication system, the method comprising:
transmitting a random access preamble to at least one of a plurality of nodes including a serving cell;
receiving a random access response message from the serving cell;
transmitting an uplink signal to a different node excluding the serving cell among the plurality of nodes; and
receiving a contention resolution message from the different node,
wherein the random access response message comprises information indicating transmitting the uplink signal to the different node, information indicating receiving the contention resolution message from the different node and information on a control channel scheduling a reception of the contention resolution message.
2. The method according to claim 1 , wherein the random access response message comprises information on a control channel used to transmit information for retransmission of the uplink signal.
3. The method according to claim 1 , wherein the control channel scheduling the reception of the contention resolution message is different from a control channel scheduling a reception of the random access response message.
4. The method according to claim 1 , wherein the random access response message comprises information on an uplink reference signal which is transmitted together with the uplink signal.
5. The method according to claim 1 , wherein the random access response message comprises information on a downlink reference signal which is transmitted together with the contention resolution message.
6. The method according to claim 1 , wherein the plurality of nodes are configured to transceive a signal with the user equipment using a CoMP (coordinated multi point) scheme.
7. A user equipment in a wireless communication system, the user equipment comprising:
a wireless communication module configured to transceive a signal with at least one of a plurality of nodes including a serving cell; and
a processor configured to process the signal,
wherein the processor is further configured to:
transmit, via the wireless communication module, a random access preamble signal to the at least one of the plurality of nodes,
receive, via the wireless communication module, a random access response signal from the serving cell,
transmit, via the wireless communication module, an uplink signal to a different node excluding the serving cell among the plurality of nodes, and
receive, via the wireless communication module, a contention resolution message from the different node, and
wherein the random access response message comprises information indicating transmitting the uplink signal to the different node, information indicating receiving the contention resolution message from the different node and information on a control channel scheduling a reception of the contention resolution message.
8. The user equipment according to claim 7 , wherein the random access response signal comprises information on a control channel used to transmit information for retransmission of the uplink signal.
9. The user equipment according to claim 7 , wherein the control channel scheduling the reception of the contention resolution signal is different from a control channel scheduling a reception of the random access response signal.
10. The user equipment according to claim 7 , wherein the random access response signal comprises information on an uplink reference signal which is transmitted together with the uplink signal.
11. The user equipment according to claim 7 , wherein the random access response signal comprises information on a downlink reference signal which is transmitted together with the contention resolution message.
12. The user equipment according to claim 7 , wherein the plurality of nodes are configured to transceive a signal with the user equipment device using a CoMP (coordinated multi point) scheme.