Patent ID: 9699791
Date: 2017-07-04
CPC Classifications: H04L,H04W

Claim:
1. A method for transmitting a reference signal to a user equipment at a base station in a wireless communication system, the method comprising: transmitting the reference signal to the user equipment according to a first pattern corresponding to a first speed section; receiving information about a movement speed of the user equipment from the user equipment; identifying the movement speed of the user equipment changed to a second speed section from the first speed section; and transmitting the reference signal to the user equipment based on a changed movement speed of the user equipment, wherein a pattern of the reference signal is maintained in the first pattern regardless of the changed movement speed when the base station is a first type base station, wherein the pattern of the reference signal is changed to a second pattern corresponding to the second speed section from the first pattern when the base station is a second type base station, wherein, if the second speed section is a higher-speed section than the first speed section, the second pattern includes the first pattern, and wherein a frequency used in communication between the user equipment and the base station when the base station is the second type base station is higher than a frequency used in communication between the user equipment and the base station when the base station is the first type base station.