Performing handover and network connection in wireless communication system

A mobile terminal for performing a handover operation in a wireless communication system, the mobile terminal comprising:

• an RF transmitting/receiving unit wirelessly communicating with a serving base station;
• and
• a controller controlling the RF transmitting/receiving unit for performing a handover operation to a target base station when bandwidth is allocated by the serving base station during a particular time period, and requesting cancellation of the handover operation from the serving base station without a separate bandwidth allocation when the handover operation to the target base station fails during the particular time period.

A base station for performing handover in a wireless communication system, the base station comprising:

• a base station controller allocating bandwidth during a particular time period for facilitating a handover operation of a mobile terminal to a target base station, receiving a request to cancel the handover operation during the particular time period when the handover operation to the target base station fails, and communicating data with the mobile terminal upon receiving the request to cancel the handover operation.

A communication device for connecting to a network in a wireless communication system, the communication device comprising:

• an RF transmitting/receiving unit wirelessly connected to a network;
• and
• a controller controlling the RF transmitting/receiving unit for determining whether a time period from when power of the communication device was turned off to when power is turned on is less than a pre-set value, and connecting to the network using previous network scanning results if the time period is less than the pre-set value.