Method and devices for ray-scanning in wireless access system supporting millimeter waves
The present invention relates to a signal transceiving method for detecting site-specific ray characteristics information unique to millimeter wave (mm Wave) links and detecting rich resolvable rays, and to device supporting same. The method for a terminal ray-scanning in a wireless access system supporting millimeter wave technology, according to one embodiment of the present invention, comprises the steps of: receiving a synchronization signal to synchronize with a base station; synchronizing with the base station using the synchronization signal; receiving, from the base station, pilot signals having different configuration patterns according to each transmitting antenna port; and ray-scanning using the pilot signals.
1. A method of performing a ray scanning by a user equipment in a wireless access system supporting a millimeter wave technology, comprising:
receiving a synchronization signal to match synchronization with a base station;
matching the synchronization with the base station using the synchronization signal;
receiving a pilot signal having a different configuration pattern per transmitting antenna port from the base station; and
performing the ray scanning using the pilot signal,
wherein the ray scanning is different from a beam scanning for finding a beam for the user equipment from among multiple beams, and
wherein the ray scanning is for acquiring power spectrum for each direction surrounding the user equipment.
2. The method of claim 1 , wherein the pilot signal is repeatedly transmitted a predetermined number of times.
3. The method of claim 1 , wherein the pilot signal is transmitted from all transmitting antenna ports of the base station within an index duration and wherein the pilot signal is transmitted with a predetermined period.
4. The method of claim 1 , wherein the pilot signal is transmitted through a single transmitting antenna port and wherein while the pilot signal is transmitted from the single transmitting antenna port, the pilot signal is not transmitted from the rest of the transmitting antenna ports of the base station.
5. The method of claim 1 , further comprising obtaining a temporary cell identifier of a cell supported by the base station using the synchronization signal, wherein the user equipment performs a cell-specific ray scanning using the temporary cell identifier.
6. A user equipment performing a ray scanning in a wireless access system supportive of a millimeter wave technology, comprising:
a receiving module; and
a processor configured to support the ray scanning,
wherein the processor is further configured to:
receive a synchronization signal to match synchronization with a base station through the receiving module,
match the synchronization with the base station using the synchronization signal,
receive a pilot signal having a different configuration pattern per transmitting antenna port from the base station, and
perform the ray scanning using the pilot signal,
wherein the ray scanning is different from a beam scanning for finding a beam for the user equipment from among multiple beams, and
wherein the ray scanning is for acquiring power spectrum for each direction surrounding the user equipment.
7. The user equipment of claim 6 , wherein the pilot signal is repeatedly transmitted a predetermined number of times.
8. The user equipment of claim 6 , wherein the pilot signal is transmitted from all transmitting antenna ports of the base station within an index duration and wherein the pilot signal is transmitted with a predetermined period.
9. The user equipment of claim 6 , wherein the pilot signal is transmitted through a single transmitting antenna port and wherein while the pilot signal is transmitted from the single transmitting antenna port, the pilot signal is not transmitted from the rest of the transmitting antenna ports of the base station.
10. The user equipment of claim 6 , wherein the processor is further configured to obtain a temporary cell identifier of a cell supported by the base station using the synchronization signal and wherein the user equipment performs a cell-specific ray scanning using the temporary cell identifier.