Patent ID: 9585110
Date: 2017-02-28
CPC Classifications: H04W

Claim:
1. A method for transmitting, by a user equipment (UE), an uplink (UL) signal in a wireless communication system, the method comprising: receiving only a single timing advance command from an eNB; and transmitting an UL signal using a single time advance value according to the single timing advance command or using one of a plurality of predefined timing advance values, wherein when the UE receives an activation message through a higher layer signaling, the UE transmits the UL signal using a specific timing advance value among the plurality of predefined timing advance values, wherein the specific timing advance value among the plurality of predefined timing advance values is indicated by a virtual cell identifier (VCI), and wherein when the UE does not receive the activation message or when the UE receives a deactivation message through the higher layer signaling, the UE transmits the UL signal using the single time advance value.