Method for reselecting cell by user equipment in wireless communication system and device therefor
The present invention relates to a method and device for reselecting a cell by a user equipment in a wireless communication system. Particularly, a method for reselecting a cell by a user equipment comprises the steps of: setting a preferred frequency for cell reselection; forming at least one candidate cell except for a specific cell; and reselecting another cell in the frequency of the specific cell among the at least one candidate cell when the frequency of the specific cell is the same as the preferred frequency.
1. A method of performing a cell reselection by a user equipment in a wireless communication system, the method comprising:
setting a prioritized frequency to perform the cell reselection, wherein the prioritized frequency corresponds to a frequency providing a multimedia broadcast and multicast service (MBMS);
configuring one or more candidate cells from which a specific cell on a first frequency is excluded, wherein the one or more candidate cells include a first cell and a second cell;
if an intraFreqReselection field contained in system information of the specific cell is set to “allowed”, reselecting a different cell on the first frequency among the one or more candidate cells; and
if the intraFreqReselection field contained in the system information of the specific cell is set to “not-allowed”, reselecting the first cell on the first frequency when the first frequency is identical to the prioritized frequency, and configuring the second cell on the first frequency not to be reselected for the prescribed time when the first frequency is not identical to the prioritized frequency.
2. The method of claim 1 , wherein the specific cell corresponds to a cell indicating that a status of the specific cell is cell-barred.
3. The method of claim 1 , wherein the specific cell corresponds to a cell of which an RRC (radio resource control) connection request has failed.
4. The method of claim 1 , wherein the specific cell corresponds to a cell in which a timer for a cell-barred is working.
5. A user equipment performing a cell reselection in a wireless communication, the user equipment comprising:
a radio frequency unit (RF unit); and
a processor configured to:
set a prioritized frequency to perform the cell reselection, wherein the prioritized frequency corresponds to a frequency providing a multimedia broadcast and multicast service (MBMS),
configure one or more candidate cells from which a specific cell on a first frequency is excluded, wherein the one or more candidate cells include a first cell and a second cell,
if an intraFreqReselection field contained in system information of the specific cell is set to “allowed”, reselect a different cell on the first frequency among the one or more candidate cells, and
if the intraFreqReselection field contained in the system information of the specific cell is set to “not-allowed”, reselect the first cell on the first frequency when the first frequency is identical to the prioritized frequency, and configure the second cell on the first frequency not to be reselected for the prescribed time when the first frequency is not identical to the prioritized frequency.