Patent application number | Description | Published |
20090040929 | Method and apparatus for dynamically managing hierarchical flows - Provided are a method and apparatus for dynamically managing hierarchical flows that more efficiently process packet traffic while maintaining compatibility with an existing packet data network in transferring both circuit traffic and packet traffic in a packet switched network. The method for dynamically managing hierarchical flows includes: receiving data packets, classifying the data packets according to attributes of the received data packets, and producing first flows; determining whether traffic of each of the first flows exceeds a predetermined bandwidth limit, and performing a packet drop process or producing second flows for first flows that exceed the bandwidth limit, according to a flow-specific policy; and performing second flow processing on the second flows according to a second flow policy. Only flows exceeding the bandwidth limit or causing congestion are hierarchically divided for management. This makes it possible to finely manage the flows without complex operations. | 02-12-2009 |
20090086764 | System and method for time synchronization on network - A system and method for time synchronization on a network is provided. According to the system and method for time synchronization, a slave clock device does not continuously receive a time synchronization message periodically transferred from a master clock device and thus does not correct its time upon all such occasions. Rather, the slave clock device requests time information from the master clock device only when the slave clock device needs to correct its time, and receives a time synchronization message transferred from the master clock device and compensates for its time deviation only while the slave clock device is activated, thereby reducing its power consumption and amount of computation. | 04-02-2009 |
20120114055 | RECEIVING APPARATUS AND METHOD FOR PROVIDING INPUT BITS OF FAST FOURIER TRANSFORMER ACCORDING TO MODULATION - A technology is provided capable of improving the efficiency of an OFDM system by obtaining the performance in Bit Error Rate (BER) in a wireless communication using OFDM and determining the minimum FFT input bit that produces a SNR difference of 0.1 dB or below with respect to a theoretical BER graph at a desired performance. | 05-10-2012 |
20120163270 | WIRELESS COMMUNICATION SYSTEM FOR PROVIDING DIVERSITY GAINS FOR MULTICAST SERVICES AND METHOD FOR PROVIDING MULTICAST SERVICES USING THE SYSTEM - There are provided a wireless communication system for providing diversity gains for multicast services and a method of providing a multicast service. According to the wireless communication system, by transmitting, when terminals are partially distributed in each cell, data to areas where no user exists so as to reduce interference between other MBS (Multicast Broadcast System) zones and other cells that transmit only unicast services, performance deterioration may be minimized. | 06-28-2012 |
20120163272 | METHOD OF SETTING UP DYNAMIC MULTICAST AND BROADCAST SERVICE ZONE FOR PROVIDING MOBILE INTERNET PROTOCOL TELEVISION SERVICE - A technology of setting up a MBS zone for providing a mobile IPTV service is provided in which the MBS zone is effectively managed, so that QoS is prevented from being degraded due to the handover delay that is caused by a MBS handover occurring when a user moves between MBS zones. | 06-28-2012 |
20120166801 | MUTUAL AUTHENTICATION SYSTEM AND METHOD FOR MOBILE TERMINALS - Provided is a technique for mutual authentication between different kinds of objects (devices, apparatuses, users, etc.) by expanding the kinds of objects that are subject to authentication, such as authentication between users, authentication between users and an apparatuses (devices, equipment, terminals, etc.), and authentication between apparatuses (devices, equipment, terminals, etc.). | 06-28-2012 |
20130021961 | METHOD AND APPARATUS FOR DYNAMICALLY CONFIGURING MULTICAST AND BROADCAST SERVICE (MBS) ZONE IN WIRELESS COMMUNICATION SYSTEM - Provided are a method and apparatus for configuring a Multicast and Broadcast Service (MBS) zone dynamically in a mobile communication environment. According to an example, there is provided a method of seamlessly changing base stations configuring a MBS zone whenever one or more mobile terminals configuring the MBS zone move or whenever a predetermined time period has elapsed to thereby provide a MBS with excellent quality while saving radio resources. | 01-24-2013 |
20130155939 | METHOD AND APPARATUS FOR ACQUIRING INITIAL SYNCHRONIZATION USING RELAY-AMBLE IN WIRELESS COMMUNICATION SYSTEM - A method and an apparatus for acquiring initial synchronization in a wireless communication system are provided. A relay station determines whether or not the initial synchronization is acquired, determines a start position of a frame using a peak of an autocorrelation signal detected based on a preamble and a relay-amble (R-amble) received from a base station in the case in which the initial synchronization is not acquired, and determines the start position of the frame using a peak of an autocorrelation signal detected based on the relay-amble received from the base station in the case in which the initial synchronization is acquired. | 06-20-2013 |
20130286923 | MULTI-CARRIER TRANSMITTING APPARATUS AND METHOD FOR MULTICAST SERVICE - Provided are an apparatus and method for transmitting multi-carriers to provide a high-quality service to multicast-based service subscriber terminals. The method includes: mapping first data for providing the multicast service, and second data different from the first data, to s different antennas; converting the first mapped data into a first Intermediate Frequency (IF) signal and the second mapped data into a second IF signal; converting the first IF signal into a first RF signal having a carrier frequency, and deciding a power intensity of the first RF signal so that the first RF signal is transmitted over the entire coverage region of the base station; and converting the second IF signal into a second RF signal having the other carrier frequency, and to deciding a power intensity of the second RF signal so that the second RF signal is transmitted over a predetermined region around the base station. | 10-31-2013 |
20140098733 | APPARATUS AND METHOD FOR PROVIDING MULTICAST AND BROADCAST SERVICE IN MOBILE COMMUNICATION ENVIRONMENT - Provided are an apparatus and method for providing a multicast and broadcast service (MBS) in a mobile communication environment. The method includes setting an MBS zone to be provided with content and include at least one member base station, configuring the MBS zone by classifying the at least one member base station belonging to the MBS zone into active members that simultaneously transmit MBS traffic and an MBS control parameter and inactive members that transmit only the MBS control parameter according to a predefined rule, and connecting a data delivery path through the active member to transmit the MBS traffic to a terminal. | 04-10-2014 |
20140137161 | METHOD FOR SELECTING BASE STATION FOR DYNAMIC CONFIGURATION OF MOBILE IPTV SERVICE REGION IN MOBILE COMMUNICATION, SYSTEM THEREFOR, DEVICE THEREFOR, AND COMPUTER-READABLE RECORDING MEDIUM - Disclosed are a method for selecting a base station for dynamic configuration of a mobile IPTV service region in mobile communication, a system therefor, a device therefor, and a computer-readable recording medium. The present invention provides a method for selecting a base station for dynamic configuration of a mobile IPTV service region in mobile communication which sets up a mobile IPTV service zone by using base stations selected by a terminal to dynamically configure a mobile IPTV service region for supplying a mobile IPTV service using a multicast/broadcast method in a mobile communication network, and maintains continuous service of the mobile IPTV, a system therefor, a device therefor, and a computer-readable recording medium. | 05-15-2014 |