Method and apparatus for transmitting reference signal for frequency offset estimation in new wireless communication system
Provided are a configuration method and a transmission method of a new reference signal for frequency offset estimation in a novel wireless communication system. The method may include configuring a synchronization signal to be transmitted through a first bandwidth part of one or more bandwidth parts configured by dividing an entire bandwidth into one or more parts, allocating the one or more reference signals for estimating the frequency offset on one or more resources other than a resource for configuring the synchronization signal, and transmitting the one or more reference signals for estimating the frequency offset.
1. A wireless device, comprising:
a transmitter;
a receiver; and
a controller which controls the transmitter and the receiver to:
receive, from a base station, a synchronization signal in a first set including one or more symbols;
receive, from the base station, a radio resource control (RRC) signal including configuration information about a reference signal; and
receive, from the base station, the reference signal in a second set including one or more symbols, based on the configuration information,
wherein the reference signal is configured, based on a numerology.
2. The wireless device of claim 1 ,
wherein the one or more symbols in the second set is configured independently from the numerology.
3. The wireless device of claim 2 ,
wherein the one or more symbols in the second set have an interval of 3 or 4.
4. The wireless device of claim 1 , wherein the reference signal is received based on a timing for receiving the synchronization signal.
5. The wireless device of claim 1 , wherein the reference signal is used to perform a frequency tracking or to estimate channel state information.
6. A base station, comprising:
a transmitter;
a receiver; and
a controller which controls the transmitter and receiver to:
transmit, to a wireless device, a synchronization signal in a first set including one or more symbols;
transmit, to the wireless device, a radio resource control (RRC) signal including configuration information about a reference signal; and
transmit, to the wireless device, the reference signal in a second set including one or more symbols, based on the configuration information,
wherein the reference signal is configured, based on a numerology.
7. The base station of claim 6 ,
wherein the one or more symbols in the second set is configured independently from the numerology.
8. The base station of claim 7 ,
wherein the one or more symbols in the second set have an interval of 3 or 4.
9. The base station of claim 6 , wherein the reference signal is received based on a timing for receiving the synchronization signal.
10. The base station of claim 6 , wherein the reference signal is used to perform a frequency tracking or to estimate channel state information.
11. An apparatus for a wireless device, comprising:
a controller which controls a transmitter and a receiver of the wireless device to:
receive, from a base station, a synchronization signal in a first set including one or more symbols;
receive, from the base station, a radio resource control (RRC) signal including configuration information about a reference signal; and
receive, from the base station, the reference signal in a second set including one or more symbols, based on the configuration information,
wherein the reference signal is configured, based on a numerology.
12. The apparatus of claim 11 ,
wherein the one or more symbols in the second set is configured independently from the numerology.
13. The apparatus of claim 12 ,
wherein the one or more symbols in the second set have an interval of 3 or 4.
14. The apparatus of claim 11 , wherein the reference signal is received based on a timing for receiving the synchronization signal.
15. The apparatus of claim 11 , wherein the reference signal is used to perform a frequency tracking or to estimate channel state information.