Electronics and Telecommunications Research Institute

Eunah Kim

Hyunho Park

Hong Seok Jeon

Chang Min Park

JungHoon Jee

Hyun Seo Park

Hyeong-Ho Lee

Ae-Soon Park

Pyeong Jung Song

JaeSheung Shin

Sung-Min Oh

Hong-Seok Jeon

Heeyoung Jung

Sook Yang Kang

Junghoon Jee

A UE does not immediately perform handover after receiving a handover command from a serving base station, but instead backups that message and continuously compares the signal strength of a serving base station and the signal strength of a target base station and performs a handover to the target base station at the best timing when handover is required. Once the timing of handover is determined, the UE transmits a handover indication message to the serving base station, and thereafter the UE performs a handover to the target base station.

Handover method and apparatus

A conventional handover method is performed in units of base stations, so that there is a problem in that a large amount of power for handover is consumed and implementation cost is high. Through dedicated protocol message exchanges between a user equipment and a network or between networks, resource availability of candidate networks is checked in advance, a handover target network is selected from among the candidate networks according to a result of checking, and the selected target network is designated as a network to which the user equipment is handed over.

Method of selecting target network for hand-over and method thereof

Provided is a method for performing handover between a communication network and a broadcast network by a handover controller of a first network corresponding to either the communication network or the broadcast network. The method for performing handover includes: searching for a second network capable of providing the same broadcast content broadcasted over the first network; performing a handover preparation procedure between the communication network and the broadcast network with a handover controller of the second network; delivering the broadcast content broadcasted over the first network to the handover controller of the second network; and sending a message requesting a terminal to watch, over the second network, the broadcast content broadcasted over the first network.

Method of handover between communication network and broadcast network for providing broadcast content, communication network handover controller, and broadcast network handover controller

An exemplary embodiment of the present invention provides a method of commanding, by a handover control apparatus, a group of terminals to perform handover from a broadcasting network to a communication network, the method comprising generating a handover indication message including service information for identifying the group of terminals and transmitting the handover indication message to the group of terminals.

Method and apparatus for handover between communication network and broadcast network

Growing community of inventors

Daejeon, South Korea

Eunah Kim