Lg Electronics Inc.

Samsung Electronics Co., Ltd.

Jae-Seung Song

Kyung-Ae Yoon

Hyun-Sook Kim

Mi-Seon Ra

Yun-Je Kang

Dong-Seok Lee

Hede Patrice

Young-Sun Shin

Patrice Hede

Jun-Ho Yang

Min-Jung Kim

Se-Hee Lee

Song-Rae Cho

Sang-Won Yoon

Jung-Hyun Park

Jong-hoon Lee

Patrice Hédé

Do-Young Kim

Naoto Fukasawa

Eun-Tae Won

Min-Hyoug Boo

Tae-Han Bae

Young-Jin Seo

Dong-Hoon Sohn

Sung-Ho Hwang

Naoto Fukusawa

Jong-Geun Ham

Hédé Patrice

Mi-Soon Ra

A method for supporting session continuity for a terminal in a server. The method according to one embodiment includes sending, by a server, a session continuity operator policy to a first terminal. The session continuity operator policy includes a parameter indicating a preferred network for a transfer of the ongoing session, and session continuity level information including one of a first level and a second level. The method according to the embodiment further includes receiving, by the server, a first session invite message for one of full media transfer and partial media transfer, unless the session continuity level information of the session continuity operator policy is the second level and the first terminal decides not to start the session transfer; and sending, by the server, a second session invite message to the second terminal to achieve session continuity with the first terminal after receiving the first session invite message.

Session transfer method and method for supporting session continuity

A multiple network connection method that includes: receiving, by a first device from a second device, capability information of the second device; transmitting, by the first device to the second device, a registration complete message indicating that the second device is registered to a network; and performing, by the first device, a service control for providing a service for the second device. A first connection path and a second connection path are established using the capability information. The first connection path is established between the network and the second device through the first device, and is used for conveying control information for the service. The second connection path is established between the network and the second device not through the first device, and is used for conveying user data for the service.

Multiple network connection method and communication device thereof

A method for transmitting information in a wireless communication system and a wireless communication terminal supporting the method, are discussed. In one embodiment, when an application server sends to a receiving terminal a specific message for checking radio environment information or a message including a radio environment capability, the receiving terminal having received the message may send a response message with its own radio environment information to the application server, such that the radio environment information related to the receiving terminal can be sent to the sending terminal after analyzed by the application server.

Wireless communication system for performing combined service between terminals having different communication environments

Disclosed is a method for selecting and managing a mobility protocol between a network and a terminal in a mobile communication system. When the terminal is to setup an IP tunnel for data transmission/reception with the network supporting a plurality of mobility protocols, firstly, the terminal is configured to transmit a list of terminal-supported mobility protocols and/or its preference information (e.g., information about mobility protocol preferred by the terminal) to the network, and secondly, the network is configured to determine (select) a mobility protocol of an IP tunnel for data transmission/reception with the terminal based on the information, thereby enhancing an efficiency of the resource when the IP tunnel is setup between the terminal and the network.

Method and device for selecting and managing mobility protocol in mobile communications system

A method and a terminal are described for providing a circuit switched (CS) service, a session initiation protocol (SIP)-based service, or a CSI service which is a combination of the CS service and an Internet Protocol (IP) multimedia subsystem (IMS) service. The terminal may receive a terminal capability version of at least one target terminal, and compare the received terminal capability version with a previously stored terminal capability version of the at least one target terminal. The terminal may send a message for requesting for terminal capability information of the at least one target terminal, if the received terminal capability version of the at least one target terminal is different from the previously stored terminal capability version of the at least one target terminal based on the comparison result. Otherwise, a CS or IMS process is implemented.

Terminal, method and system for performing combination service using terminal capability version

A method for handling CS (Circuit Switching) calls in a VCC (Voice Call Continuity), a VCC application server and an apparatus thereof, wherein first, the VCC application identifies whether a called party number of CS domain calls routed thereto is in an international format, secondly, the VCC application may request to convert the format of the called party number into the international format (referred to as 'routable number') if the called party number is not in the international format, thirdly, a translation entity may convert the called party number into the routable number by adding an international prefix suitable for a current location of the originating terminal based on both the called party number and location information on the originating terminal, and then the calls may continue in an IMS domain or a CS domain by the routable number.

Method for handling CS calls in voice call continuity, VCC application server and translation entity

A device and method for transferring a session. The method includes receiving a session continuity operator policy while performing a session with a target terminal via an original network; storing the session continuity operator policy; determining whether to transfer a whole or part of the session to a server according to a parameter in at least the session continuity operator policy; and sending to the server a session invitation message for a session transfer to transfer of the whole of the session if the whole of the session is determined to be transferred. The session invitation message includes information on at least one data to be transferred among a voice data and a non-voice data on the session. The session transfer corresponds to a PS (Packet Switching) to PS transfer.

A method, server and terminal for providing a Voice Call Continuity (VCC) service, are discussed. According to an embodiment, the terminal includes a storage unit to store operator policy information and user preference information, the user preference information including domain selection information specifying a user-preferred domain to be used when originating the outgoing call from the terminal, the operator policy information including domain selection information specifying a network-preferred domain to be used when originating the outgoing call from the terminal; and a controller to perform a domain selection for the outgoing call based on the user preference information or the operator policy information.

Method for placing call in voice call continuity and terminal and server thereof

A method for supporting session continuity for a terminal in a server including generating a session continuity operator policy, under a state that a first terminal is performing a session with a second terminal through a first network, and the generated session continuity operator policy supports multimedia sessions for both voice data and non-voice data and includes operator policy parameters indicating whether only voice data, only non-voice data, or both voice and non-voice data is to be transferred to a second network; sending the generated session continuity operator policy to the first terminal; receiving a session invite message from the first terminal via a target network in response to the first terminal having received the generated session continuity operator policy; and sending a session re-invite message to the second terminal so as to achieve session continuity via said second network after receiving the session invite message from the first terminal.

A terminal, method and system for providing a CS service, a SIP-based service, or a CSI service, are provided. According to an embodiment, the terminal includes a controller to receive a terminal capability version of at least one target terminal, to compare the received terminal capability version with a previously stored terminal capability version of the at least one target terminal, and to determine whether to request for terminal capability information of the at least one target terminal based on the comparison result, wherein the terminal capability version identifies a version of capabilities of the at least one target terminal.

Tablet computer

A method and terminal for controlling Voice Call Continuity (VCC) functions initiated by a network, are discussed. According to an embodiment, the method includes receiving, by a terminal, a VCC function notification message, the VCC function notification message including VCC enabling information indicating whether a VCC function of the terminal is to be enabled or disabled; and enabling or disabling the VCC function of the terminal based on the VCC function notification message.

Method for controlling VCC functions initiated by network and terminal and network server thereof

A Session Initiation Protocol (SIP) based session setup method and an terminal thereof, wherein the SIP based session setup method, in a session setup process performed between terminals in a SIP based network which includes at least one or more of the terminals and at least one or more entities, comprises sending a SIP INVITE message from a first terminal to a second terminal, receiving and analyzing the SIP INVITE message by the second terminal, and including a certain service condition in a SIP RESPONSE message, by the second terminal, and sending the SIP RESPONSE message including the service condition to the first terminal.

Growing community of inventors

Seoul, South Korea

Jae-Seung Song