Patent ID: 8644248
Filing Date: 2014-02-04
Classification: H04L,H04W

Abstract:
1. A mobile terminal for performing a stream control transmission protocol (SCTP)-based handover, the terminal comprising: a session management unit capable of initiating an SCTP session for communication with another terminal through an Internet and terminating an SCTP session established between the mobile terminal and the another terminal; a receiver capable of receiving beacon signals from a plurality of base stations, the receiver connected to a first router that is connected to the Internet, and storing the beacon signals in a link layer state information database; a signal intensity extraction unit that, if the mobile terminal enters an overlapping area of a first communication area managed by both a first one of the plurality of base stations and a second communication area managed by a second one of the plurality of the base stations while an SCTP session is established between the mobile terminal and the another terminal with a first IP address received from the first one of the plurality of base stations, extracts an intensity of a beacon signal transmitted by the second base station from the stored link layer state information database; and a handover unit, if the extracted beacon signal intensity is greater than a first critical value, that adds a second IP address received from the second base station to the SCTP session established between the mobile terminal and the another terminal, and transmit a request to the another terminal to add the second IP address to the SCTP session, if the extracted beacon signal intensity is greater than a second critical value other than the first critical value, that transmits a request to the another terminal to communicate with the mobile terminal using the second IP address received from the second one of the plurality of the base stations, wherein the first and the second of the plurality of base stations are connected to the first router connected to the Internet in order to transmit and receive data to/from the another terminal, and the another terminal is connected to a second router connected to the Internet in order to transmit and receive data to/from the mobile terminal.