Method for reselecting a cell at a user equipment in wireless communication system
The present invention relates to a method for enabling a terminal to reselect a cell in a wireless communication system. In more detail, the method includes receiving probability information relating to cell reselection from a network, and performing first cell reselection by using the received probability information when a specific service is received or is to be received.
1. A method for reselecting a cell at a user equipment in a wireless communication system, the method comprising:
receiving first cell reselection priority information from a network;
generating second cell reselection priority information based on the first cell reselection priority information; receiving probability information related to cell reselection from the network; and
performing a first cell reselection according to the second cell reselection priority information and the received probability information when a specific service is received or is desired to be received and when a first random number generated by the user equipment is lower than a number indicated by the probability information,
wherein generating the second cell reselection priority information comprises modifying a priority of a frequency on which the specific service is provided as a highest priority, and
wherein, when a cell selected by the first cell reselection is a secondary cell of the user equipment, the method further comprises:
transmitting, to the network, a first message indicating that the user equipment cannot receive the specific service via the secondary cell;
receiving a second message for changing the secondary cell to a primary cell of the user equipment; and
receiving the specific service via the changed primary cell from the network.
2. The method according to claim 1 , further comprising:
performing a second cell reselection in accordance with the first cell reselection priority information.
3. The method according to claim 1 , further comprising:
When a cell having the frequency on which the specific service is provided is reselected, receiving the specific service from the reselected cell.
4. The method according to claim 1 , further comprising:
generating a second random number if the user equipment does not receive the specific service or does not wish to receive the specific service; and
determining whether to apply the first cell reselection priority during a second cell reselection by comparing the received probability information with the second random number.
5. The method according to claim 1 , further comprising:
generating a second random number if the user equipment performs connection configuration with the network; and
determining whether to apply the first cell reselection priority during a second cell reselection by comparing the received probability information with the second random number.