Patent application number | Description | Published |
20110158220 | MEDIA ACCESS CONTROL METHOD IN WIRELESS NETWORK - A media access control method in a wireless network is provided. Each of devices in the wireless network determines one of a plurality of beacon slots within a beacon period as a beacon slot of the device. The devices in the wireless network determine a data transmission order in accordance with the slot numbers of the beacon slots of the devices in a reserved period of a data transmission period. Data is transmitted in the unreserved period in accordance with the determined data transmission order. | 06-30-2011 |
20120076074 | APPARATUS AND METHOD FOR ESTABLISHING CONTENTION WINDOW IN WIMEDIA WIRELESS NETWORK - There are provided an apparatus and a method for establishing a contention window in a WiMedia wireless network. The contention window establishing apparatus includes: a parsing unit extracting the number of devices that intend to transmit data from a beacon received during a beacon period and an access category (AC) of each device; a calculation unit calculating a transmission probability of each access category (AC) on the basis of the extracted number of devices; and a contention window establishing unit establishing a contention window for each access category (AC) on the basis of the calculated transmission probability, to reduce contentions among the devices and decrease data transmission latency time, thereby maximizing efficiency in data transmission latency time. | 03-29-2012 |
20120250495 | METHOD OF REDUCING RETRANSMISSION OF DATA FRAME AND RECEIVING NODE THEREFOR - A method of reducing a retransmission of a data frame and a receiving node therefor continuously receiving N data frames generated by encoding K source data packets by erasure coding. Errors in the received N data frames are checked, and an ACK message transmitted informing that the source data packets are capable of being restored, when the number (R) of data frames not containing errors is equal to or greater than the number (K) of source data packets. An ACK message including the number (X) of data frames for which retransmission is to be requested is transmitted when the number (R) of data frames not containing errors is less than the number (K) of source data packets, as a result of checking for errors in the received N data frames. Despite errors in some of the data frames, data may be restored without requesting the retransmission of data frames. | 10-04-2012 |
20130016600 | NETWORK APPARATUS AND METHOD OF RETRANSMITTING FRAME USING THE SAMEAANM HWANG; Sung HoAACI SuwonAACO KRAAGP HWANG; Sung Ho Suwon KRAANM Park; Joun SupAACI SuwonAACO KRAAGP Park; Joun Sup Suwon KRAANM Kim; Ki HongAACI SuwonAACO KRAAGP Kim; Ki Hong Suwon KRAANM Park; Chul GyunAACI YonginAACO KRAAGP Park; Chul Gyun Yongin KRAANM Song; Tae WonAACI SeoulAACO KRAAGP Song; Tae Won Seoul KRAANM Pack; Sang HeonAACI SeoulAACO KRAAGP Pack; Sang Heon Seoul KR - There is provided a network apparatus capable of effectively retransmitting a frame in a frame aggregation environment, and a method of retransmitting a frame using the same. The network apparatus includes: a transmitting node broadcasting a plurality of data frames in a frame aggregation environment; a receiving node receiving the plurality of broadcast data frames and broadcasting a reception result; and at least one relay node receiving and storing at least a portion of the plurality of broadcast data frames and transmitting, together with the transmitting node, a data frame for which retransmission is required to the receiving node according to a calculated transmission success rate when the reception result from the receiving node is a retransmission request. | 01-17-2013 |
20140003412 | APPARATUS AND METHOD FOR ESTABLISHING CONTENTION WINDOW IN WIMEDIA WIRELESS NETWORK | 01-02-2014 |
20140297779 | METHOD AND APPARATUS FOR SENDING INFORMATION USING SHARING CACHE BETWEEN PORTABLE TERMINALS - A method for operating a receiving portable terminal in a mobile communication system includes receiving a first packet from a sending portable terminal, determining a fingerprint overlapping a fingerprint corresponding to at least one chunk of the first packet in a fingerprint set cache, determining a fingerprint set including the most redundant fingerprints, in the fingerprint set cache, determining at least one fingerprint to send, in the determined fingerprint set, sending the at least one determined fingerprint to the sending portable terminal, and receiving a second packet from the sending portable terminal. An apparatus includes a controller configured to determine at least one redundant fingerprint overlapping a fingerprint corresponding to at least one chunk of the first packet in a fingerprint set cache, determine a fingerprint set including the most redundant fingerprint in the fingerprint set cache, and determine at least one fingerprint to send in the determined fingerprint set. | 10-02-2014 |
20150017979 | METHOD AND APPARATUS FOR DISCOVERING NEIGHBOR DEVICE IN D2D COMMUNICATION NETWORK - A method of a Mobile Station (MS) for discovering neighbor MSs in a Device to Device (D2D) network includes broadcasting, by a discovery MS, a discovery request signal for discovering neighbor MSs, using a discovery request resource region repeated with a first period, if a neighbor MS discovery event is detected; and receiving, by the discovery MS, a discovery signal from at least one of other MSs in response to the discovery request signal, using a discovery resource region repeated with a second period. Other embodiments including a method for a central node discovering neighbor MSs and a discovery MS and a central node are also disclosed. | 01-15-2015 |
20150327163 | METHOD AND APPARATUS FOR SELECTING MOBILITY ANCHOR IN MOBILE COMMUNICATION SYSTEM - The present disclosure relates to a pre-5 | 11-12-2015 |