Abstract:
Disclosed is a discovery method for direct communication between devices in a cellular mobile communication system and a device for the same. the discovery method of the discovery device includes a step of obtaining information on a service which the terminals provide from a server managing the information on the terminals providing the service in a direction communication method between the terminals with a mobile communications network; a step of selecting an interest service based on the information of the service; a step of receiving information on a discovery wireless resource allocated to the terminal providing the interest service from a base station; and a step of discovering the terminal providing the interest service based on the information on the discovery wireless resource.
Abstract:
PURPOSE: A multicast transmission method using a public wireless interface and a device thereof are provided to be unnecessary to provide the same data several times when the radio equipment of a mobile communication base station is connected to a radio equipment controller by using a CPRI(Common Public Radio Interface). CONSTITUTION: A link generation unit(310) generates one CPRI link for transmitting broadcasting data. A transmission unit(330) simultaneously transmits the CPRI link generated from the link generation unit to a plurality of radio equipment through the CPRI link generated in the link generation unit. The CPRI link generation unit is constructed is connect to the CPRI link and simultaneously transmitting the broadcasting data. [Reference numerals] (131) Radio machine 1; (132) Radio machine 2; (133) Radio machine 3; (310) Link generation unit; (320) Data configuration unit; (330) Transmission unit
Abstract:
본 발명은 이종망간 핸드오버 장치 및 방법에 관한 것으로, 멀티 무선 인터페이스 환경에서의 이종망간 핸드오버시 각 무선 접속망으로부터 무선자원을 수집 및 관리하고, 수집된 무선자원들을 이용하여 핸드오버를 결정 및 제어하는 범용의 핸드오버 장치를 통해 특정 무선 접속망에 종속적이지 않으면서도 IP 패킷 손실을 최소화하면서 지속적인 연결 서비스를 제공할 수 있도록 한 것이다. 멀티 무선 인터페이스 환경, 이종망간 핸드오버, 무선자원, 사전등록
Abstract:
PURPOSE: An EMBMS(Evolved Multimedia Broadcast Multicast Service) chatting service providing system, provider server, and user terminal control method thereof are provided to effectively use radio resources by using the capability of an MBMS(Multimedia Broadcast Multimedia Service). CONSTITUTION: One or more user terminals(250) transmits and receives content and conversation messages by requesting the open of the chatting channels in order to transmit conversation messages to plural mobile subscribers who participate in a chatting channel and to receive the conversation messages to the mobile subscribers. An eBM-SC(evolved Broadcast Multicast-Services Center)(230) controls EMBMS in order to transmit the conversation messages to one or more user terminals by using the EMBMS. A service provider server(210) transmits user service information, first bearer service information, and the content.
Abstract:
PURPOSE: An efficient scheduling apparatus and method for MBSFN in eNBs is provided to allocate radio resource in consideration of priority, minimum guaranteed transfer rate and maximum transmission rate and to minimize a number of subframes allocated in one session. CONSTITUTION: A receiving module(510) receives packets of LCIDs(Logical Channel IDs)] from RLC(Radio Link Control). A first allocator(521) of a first schedule module(520) allocates a first LCID packets in which GBR allocation is not checked among the LCIDs. The first check unit(522) of the first schedule module checks GBR allocation about the allocated first LCID. A MSI(MBMS Scheduling Information) generation module(550) generates MSI from the subframe.
Abstract:
PURPOSE: A streaming server, a mobile terminal, and a method for reducing channel zapping delay are provided to transmit base layer data to every time slice, thereby displaying a picture by the base layer data of a channel requested by a channel change. CONSTITUTION: An encoding unit(210) classifies each of channel data into base layer data and extension layer data. The encoding unit encodes the classified data. A division unit(220) divides the encoded channel data by a time slice unit. A cycle data transmitting unit(230) transmits time slice cycle data about each channel. A stream transmitting unit(240) transmits the divided data at a preset time.