Abstract:
다중 채팅 서비스를 제공하기 위한 EMBMS 채팅 서비스 제공 시스템에 있어서, 다중 채팅 서비스를 제공하기 위한 EMBMS 채팅 서비스 제공 시스템에 있어서, 채팅 채널에 참여한 복수의 유, 무선 가입자들과 대화 메시지를 송수신할 수 있도록 상기 채팅 채널의 개설을 요청하거나, 기 개설된 복수 개의 채팅 채널에 대한 공지 정보를 수신하여 그 중 어느 하나의 채팅 채널을 선택하고, 상기 대화 메시지 및 컨텐츠를 송수신하는 적어도 하나의 사용자 단말(User Equipment; UE); 상기 적어도 하나의 사용자 단말에게 상기 기 개설된 복수 개의 채팅 채널에 대한 정보를 공지하고, 상기 사용자 단말이 선택한 채팅 채널을 통해 상기 대화 메시지 및 컨텐츠를 송수신할 수 있도록 EMBMS 서비스의 제어를 수행하는 eBM-SC(evolved Broadcast Multicast-Services Center); 및 상기 적어도 하나의 사용자 단말이 상기 채팅 채널에 참여한 복수의 유, 무선 가입자들과 상기 대화 메시지를 송수신할 수 있도록 상기 eBM-SC에게 EMBMS 서비스 제어를 위해 필요한 사용자 서비스 정보, 상기 EMBMS 베어러 서비스의 등록 요청에 이용되는, 상기 EMBMS 사용자 서비스를 식별하기 위한 사용자 서비스 식별자를 포함하는 제1 베어러 서비스 정보 및 상기 채팅 채널별 컨텐츠를 전송하는 서비스 제공자 서버를 포함하는 EMBMS 채팅 서비스 제공 시스템이 제공된다.
Abstract:
Disclosed are a method and an apparatus of measuring proximity for device-to-device communications in a mobile communications system. The method of measuring proximity comprises the steps of: determining whether a packet received from a gateway includes a cell identifier; verifying whether the cell identifier is matched to a previously stored cell identifier if it is determined that the packet includes the cell identifier; extracting IP addresses of mobile terminals receiving and transmitting packets from said packet if the cell identifier is matched to the previously stored cell identifier; searching for IP addresses matched to the extracted IP addresses based on a proximity list containing IP addresses of mobile terminals being in device-to-device communications; and registering the extracted IP addresses to the proximity list and measuring proximity between said mobile terminals if the extracted IP addresses do not exist in the proximity list.
Abstract:
Disclosed is a mobile terminals discovery method for device-to-device communication in a mobile communication network. The mobile terminals discovery method for device-to-device communication comprises the steps of: transmitting, by a first mobile terminal, information on the first mobile terminal to a server for managing relations between mobile terminals; receiving information on a terminal, which is verified to be proximate to the first mobile terminal based on the information on the first terminal, from the server; measuring terminals being proximate to the first mobile terminal and transmitting discovery information for device-to-device communication and transmitting information on the terminals to a base station; receiving information on wireless resources allocated based on the information on the proximate terminals from the base station; and discovering a second terminal, which will perform device-to-device communication from among the verified terminals, by using the allocated wireless resources based on the information on the verified terminals.
Abstract:
Disclosed are a method for direct multi-cast communications between terminals in a cellular mobile communications system and an apparatus thereof. The method for direct multi-cast communications between terminals can include the steps of transmitting a server designation request message requesting to be registered to a server terminal to a base station; and transmitting service information by using a multi-cast or broadcast communications method for direct communications between terminals based on wireless resources allocated by the base station.
Abstract:
PURPOSE: MBMS providing apparatus and MBMS providing method using the same is provided to prevent a generation of an unnecessary load and improve a performance of a communications network. CONSTITUTION: The MBMS providing apparatus (10) comprises a third layer (12), a second layer (13), and a first layer (14). The third layer includes control layer which integrates network layers producing MBMS, and processing the control data, and a data layer which process the broadcasting data among multiple DUs (Digital Unit) (11). The second layer integrates data link layers which provide MBMS among multiple DUs. The first layer integrates physical layers which provide MBMS among multiple DUs.
Abstract:
PURPOSE: A packet processing method for a broadcasting service of a base station and base station thereof are provided to reduce the transmission of packets and to transmit consecutive packet according to a time stamp and a packet number. CONSTITUTION: A GTP-U(GPRS Tunnelling Protocol for User Plane) module(220) receives a packet in which a time stamp and a packet number are included. The GTP-U module transfers the packet of the order based on the time stamp and the packet number through the predetermined buffering action. An RLC(Radio Link Control) module(230) stores a broadcasting service to a buffer. The RLC module performs the scheduling operation.
Abstract:
PURPOSE: A common radio resource management apparatus for handover between heterogeneous networks, a local radio resource management apparatus for handover between heterogeneous networks, and a handover method by managing common radio resource management over a heterogeneous network environment are provided to efficiently supply the services of various service qualities to a mobile terminal by supporting the handover between heterogeneous networks through integrated wireless resource management. CONSTITUTION: A network state information management unit(110) receives network state information non-dependent on a network from heterogeneous networks. A mobile terminal information management unit(120) receives mobile terminal information non-dependent on the network from each network of heterogeneous networks. Based on the state information of the nondependent network and the information of the non-dependent mobile terminal, a network selection unit(130) selects the network for handover.
Abstract:
본 발명은 네트워크 기반의 단말 이동성 관리 방법에 관한 것으로, 인증 서버로부터 단말에 대한 이동성 관리 정책 정보(Policy Profile)를 수신함으로써 단말의 접속 사실을 감지하는 단계;상기 접속 사실이 감지되면 프록시 바인딩 업데이트 메시지를 전송하여 그에 대한 응답으로 상기 단말의 홈 네트워크 프리픽스 정보를 획득하는 단계; 및 상기 단말로부터 수신되는 요청 메시지로부터 상기 단말의 링크-로컬 주소를 파악하여, 상기 획득된 홈 네트워크 프리픽스 정보를 포함하는 라우터 광고 메시지를 상기 단말로 전송하는 단계;를 포함하고, 단말의 이동성 관리를 위한 유효시간(Lifetime) 만료시에 단말의 접속을 파악하기 위하여 이웃 광고요청(Neighbor Solicitation) 메시지를 단말의 링크로컬 주소로 송신하고, 이에 대한 응답으로 단말이 이웃광고(Neighbor Advertisement) 메시지가 회신되면, 그 단말이 경우 접속한 것으로 판단하는 것을 특징으로 하는 네트워크 기반의 이동성 관리방법에 의해 무선 이동통신 망에서 액세스 네트워크와 무관하게 순수IPv6 프로토콜만을 사용하는 단말에게도 추가적인 기능 요구 없이 네트워크 기반의 이동성을 제공할 수 있다. 이동성, MAG, IPv6
Abstract:
A roaming method between the packet-based next generation mobile communication system and a 3GPP(3rd Generation Partnership Project) mobile communication system are provided to integrate the management the establishment of a routing path with the management of a user session so that the components of the packet-based next generation mobile network are interlinked. A next generation mobile telecommunication system comprises a mobility management part and a routing management part for managing a routing path in regard to a user's traffic. A roaming process includes a process of acquiring information relating to a user's terminal in a previous connection system of the user's terminal(201) after receiving the network registration request from the user's terminal. Thereafter, a router advertisement message is transmitted to the user's terminal(205). Thereafter, the registration request message is transmitted to a home subscriber server(207) after receiving a mobile IP registration request message(206) in order to re-establish the session from the user's terminal. Thereafter, a mobile IP registration response is transmitted to the user's terminal(211) when the response message for notifying the change of the routing information(210) corresponding to the user's terminal is received from the home subscriber server.