Patent application number | Description | Published |
20100061288 | METHOD FOR PROVIDING MULTICAST BROADCAST SERVICE IN COMMUNICATION SYSTEM - In a communication system, a plurality of radio access systems (RASs) respectively receives connection resources from an MBS server for transmitting a multicast broadcast data packet. The MBS server is involved in transmission of the multicast broadcast data packet. Then, the plurality of RASs receive the multicast broadcast data packet including parameters for synchronization between the plurality of RASs and parameters for size and location of the multicast broadcast data packet and deliver the received multicast broadcast data packet to a portable subscriber station (PSS). Thereby, the plurality of RASs can transmit the multicast broadcast data packets with the same location and the same size to the PSSs at the same time. | 03-11-2010 |
20100315985 | METHOD OF PROVIDING MULTICAST BROADCAST SERVICE - The present invention relates to a method of providing a multicast broadcast service. A message for providing an MBS (Multicast Broadcast Service) between network constituent elements is defined by applying a message defined in a wireless channel, and functions and parameters to be performed by the network constituent elements are defined. Therefore, the MBS can be provided in a wideband wireless access network that is a field of a mobile communication system and includes a wire channel. | 12-16-2010 |
20110078730 | METHOD AND APPARATUS FOR SCHEDULING RADIO ACCESS TO REDUCE CHANNEL ZAPPING DELAY - Provided is a method and apparatus for scheduling a radio access to reduce a channel zapping delay. The radio access scheduling method may receive abstract information with respect to all of currently receivable channels at each channel scheduling interval, and may receive the abstract information in advance and provide the abstract information when a channel change request is received, and thereby reduce the channel zapping delay. | 03-31-2011 |
20110145861 | APPARATUS AND METHOD OF CONTROLLING BROADCAST SERVICES - Provided is the broadcast service controlling apparatus and method. The broadcast service controlling method may perform grouping, into a broadcast group, broadcast services having the same transmission feature, may control scheduling information associated with the broadcast services included in the broadcast group and thus, may dynamically perform scheduling with respect to broadcast services. | 06-16-2011 |
20110151911 | MULTIMEDIA BROADCAST/MULTICAST SERVICE SYSTEM, AND DATA TRANSMISSION AND RECEPTION METHOD THEREOF - A data transmission method of a Multimedia Broadcast/Multicast Service (MBMS) system is provided. The data transmission method includes scheduling multimedia data including a plurality of sub-frames to be transmitted for each of a plurality of scheduling intervals, generating scheduling information, and transmitting, in advance, the scheduling information to a terminal, so that the terminal may selectively receive a plurality of sub-frames corresponding to a first scheduling interval, based on the scheduling information. | 06-23-2011 |
20120072955 | STREAMING SERVER AND MOBILE TERMINAL FOR REDUCING CHANNEL-CHANGING DELAY, AND A METHOD THEREFOR - Provided is a method and apparatus for reducing zapping delay, which may transmit base layer data for each burst in a time-slicing scheme, and output the base layer data of a channel to be changed at the time of changing the channel, thereby reducing the zapping delay. | 03-22-2012 |
20120099504 | SYSTEM FOR PROVIDING EMBMS CHATTING SERVICE AND SERVICE PROVIDER SERVER OF THE SAME, AND METHOD FOR CONTROLLING eBM-SC AND USER EQUIPMENT - Disclosed is a system for providing an Evolved Multimedia Broadcast/Multicast Service (EMBMS) chatting service for providing a multi-chatting service. The system comprises at least one of a User Equipment (UE) to request establishment of a chatting channel and to transmit and receive a communication message and contents so as to transmit and receive the communication message with a plurality of mobile subscribers participated in the chatting channel, an evolved Broadcast Multicast-Service Center (eBM-SC) to perform control of an EMBMS service so as to transmit the communication message to the at least one of the UE using the EMBMS service, and a service provider server to transmit, to the eBM-SC, user service information, first bearer service information, and contents for each of the chatting channels, so that the UE transmits and receives the communication message with the plurality of the mobile subscribers participated in the chatting channel. | 04-26-2012 |
20120155363 | SCHEDULING APPARATUS CONSIDERING QUALITY OF SERVICE (QOS) - Disclosed is an efficient scheduling apparatus and method for multi-cell transmission in evolved node bases (eNBs). An eNB scheduling for a multi-cell transmission service may allocate wireless resources based on a priority level, a minimum guaranteed bit rate, and a maximum bit rate. That is, a subframe may be efficiently used by minimizing the number of subframes allocated to a single session while satisfying a quality of service (QoS). | 06-21-2012 |
20120155364 | METHOD AND APPARATUS FOR COUNTING MULTIMEDIA BROADCAST AND MULTICAST SERVICES - A method and apparatus for multimedia broadcast and multicast service (MBMS) counting is provided. A user equipment (UE) may transmit selected service information to a multi-cell and multicast coordination entity (MCE) through a target evolved node base station (eNB), every time that a service requiring counting is received or cancelled and thus, the MCE may accurately manage a number of UEs that receive a service for each eNB. Also, the use may transmit selected service information to the MCE through the target eNB every time that the UE enters a new cell and thus, the MCE may accurately manage a number of UEs that receive a service for each eNB. | 06-21-2012 |
20120163274 | SYSTEM AND METHOD FOR RECEIVING MBMS BROADCASTING SERVICE - Disclosed are a system and a method for receiving an MBMS broadcasting service. In the present invention, in a mobile communication/wireless communication system, an MBMS service is provided by synchronizing a unicast bearer with a multicast bearer through scheduling information mapping at the time of transmitting a broadcast/multicast service through a unicast. Further, the present invention presents even a method for improving quality of experience (QoE) of the service by providing the MBMS service through the multicast bearer and the unicast bearer simultaneously. According to the present invention, MBMS services of various service qualities can be provided depending on wireless quality of a terminal or the capability of the terminal at the time of providing the MBMS service. | 06-28-2012 |
20130163500 | MULTIMEDIA MULTICAST/BROADCAST SERVICE PROVIDING APPARATUS AND MULTIMEDIA MULTICAST/BROADCAST SERVICE PROVIDING METHOD USING THE SAME - An MBMS providing apparatus and an MBMS providing method using the same in a cloud radio access network are provided. The MBMS providing apparatus includes a third layer into which a plurality of network layers providing an MBMS are integrated in the plurality of DUs, and a second layer into which a plurality of datalink layers providing the MBMS are integrated in the DUs. Therefore, the present invention integrates the layers that provide the MBMS in the plurality of DUs, and provide the MBMS by MBSFN synchronization area through the integrated layers. Accordingly, by performing the MBMS by MBSFN synchronization area through respective integrated layers, the present invention can prevent the occurrence of an unnecessary load, thus enhancing the performance of a communication network. | 06-27-2013 |
20130258933 | SYNCHRONIZATION METHOD AND APPARATUS FOR BROADCAST MULTICAST SERVICE - There is provided a method for synchronization between one or more base stations to provide broadcast multicast service, including: receiving a session start request message, and extracting a service start setting time set to start broadcast service from the session start request message; comparing the service start setting time to a modification check time being a check time which is later than and closest to the service start setting time, among check times at which it is determined whether or not broadcast service has changed, the check times having a predetermined time interval; deciding, when the modification check time is later than the service start setting time by a predetermined internal slack time period or more, the modification check time as a service start time at which broadcast service starts; and transmitting information indicating the service start time to the base stations. | 10-03-2013 |
20140160965 | PROXIMITY MEASUREMENT METHOD AND APPARATUS FOR DEVICE TO DEVICE COMMUNICATION IN MOBILE COMMUNICATION SYSTEM - Disclosed is a proximity measurement method and apparatus for device-to-device (D2D) communication in a mobile communication system. The proximity measurement method may include determining whether a cell identification (ID) is included in a packet received from a gateway, verifying whether the cell ID matches a pre-stored cell ID when the cell ID is included, extracting, from the packet, Internet Protocol addresses of mobile terminals transmitting and receiving the packet when the cell ID matches the pre-stored cell ID, searching for IP addresses matched to the extracted IP addresses based on a proximity list including IP addresses of mobile terminals performing D2D communication, and registering, when the extracted IP addresses are absent in the proximity list, the extracted IP addresses in the proximity list and measuring proximity between the mobile terminals. | 06-12-2014 |
20140162643 | METHOD AND APPARATUS FOR DEVICE TO DEVICE MULTICAST COMMUNICATION IN CELLULAR MOBILE SYSTEMS - Disclosed is a method and an apparatus for device-to-device (D2D) multicast communication in a cellular mobile communication system. The method for D2D communication may include transmitting a server designation request message requesting registration as a server terminal to a base station, and transmitting service information using a D2D multicast or broadcast communication scheme based on a radio resource allocated by the base station. | 06-12-2014 |
20140162668 | METHOD AND APPARATUS FOR SCHEDULING IN CELLULAR BASED DEVICE TO DEVICE COMMUNICATION - Disclosed is a method and apparatus for scheduling in a cellular-based device-to-device (D2D) communication. The method of scheduling a cellular resource used in a base station for a D2D communication between terminals may include grouping, by a proximity coordinator, a cellular resource of an adjacent base station based on cell information of a base station, managing a resource to be allocated to the terminal and a resource allocated previously to the terminal based on the grouped resource, and allocating the grouped resource to the terminal based on information associated with the resource to be allocated and the previously allocated resource when a request for D2D communication between terminals located in different cells is received. | 06-12-2014 |
20140162671 | DISCOVERY METHOD AND APPARATUS FOR DEVICE TO DEVICE COMMUNICATION IN CELLULAR MOBILE COMMUNICATION SYSTEM - Disclosed is a discovery method and apparatus for device-to-device (D2D) communication in a cellular mobile communication system. The discovery method performed by the discovery apparatus may include obtaining, from a server managing information associated with terminals providing a service using a D2D communication scheme over a mobile communication network, information associated with a service provided by the terminals, selecting a service of interest based on the information associated with the service, receiving, from a base station, information associated with a discovery radio resource allocated to the terminals providing the service of interest, and discovering the terminals providing the service of interest based on the information associated with the discovery radio resource. | 06-12-2014 |