A method of communicating measurement information associated with an user equipment in a wireless communication network environment, the method comprising: detecting a radio link failure between the user equipment and a source base station or a handover failure from the source base station to a target base station; transmitting a connection re-establishment request message to the target base station associated with a target cell in the case of handover failure detection or to the source base station associated with a cell in the case of radio link failure detection; receiving a connection re-establishment response message from the target base station in the case of handover failure detection or from the source base station in the case of radio link failure, in response to the connection re-establishment request message; transmitting a connection request message to a base station, when the connection re-establishment response message indicates unsuccessful establishment of a wireless connection with the source or target base station; receiving a connection setup message from the base station in response to the connection request message; transmitting a connection setup complete message to the base station upon successful establishment of the wireless connection with the base station, wherein the connection setup complete message includes information indicating an availability of measurements related to the radio link failure or the handover failure; receiving a request to transmit measurement information from the base station; and transmitting the measurement information to the base station based on the information indicating the availability of measurements included in the connection setup complete message in response to the received request. detecting a radio link failure between the user equipment and a source base station or a handover failure from the source base station to a target base station; transmitting a connection re-establishment request message to the target base station associated with a target cell in the case of handover failure detection or to the source base station associated with a cell in the case of radio link failure detection; receiving a connection re-establishment response message from the target base station in the case of handover failure detection or from the source base station in the case of radio link failure, in response to the connection re-establishment request message; transmitting a connection request message to a base station, when the connection re-establishment response message indicates unsuccessful establishment of a wireless connection with the source or target base station; receiving a connection setup message from the base station in response to the connection request message; transmitting a connection setup complete message to the base station upon successful establishment of the wireless connection with the base station, wherein the connection setup complete message includes information indicating an availability of measurements related to the radio link failure or the handover failure; receiving a request to transmit measurement information from the base station; and transmitting the measurement information to the base station based on the information indicating the availability of measurements included in the connection setup complete message in response to the received request. <EOS>