Patent application number | Description | Published |
20100069078 | METHOD OF CONTROLLING CALL SETUP IN WIRELESS COMMUNICATION SYSTEM - The present invention is a method of controlling call setup, which accepts a request for setting a call when a first ratio of free resource blocks for uplink during a first monitoring unit time just before receiving the request is more than or equal to a first call acceptance threshold for uplink and a second ratio of free resource blocks for downlink during the first monitoring unit time is more than or equal to a second call acceptance threshold for downlink. When the first ratio is less than the first call acceptance threshold or the second ratio is less than the second call acceptance threshold, the call is queued for a queuing unit time. The call is accepted when a ratio of free resource blocks for uplink during a second monitoring unit time just before terminating the queuing unit time is more than or equal to the first call acceptance threshold and a ratio of free resource blocks for downlink during the second monitoring unit time is more than or equal to the second call acceptance threshold. | 03-18-2010 |
20100330989 | TERMINAL AND METHOD FOR CONTROLLING CELL SEARCHING THEREOF - A cell search method for a terminal capable of cell search control includes: receiving a message including first cell search information from a macro cell base station that manages a macro cell; updating second cell search information stored in the terminal based on the first cell search information; and searching for an accessible cell based on the updated second cell search information. | 12-30-2010 |
20110038313 | ENHANCED COMMUNICATION APPARATUS FOR PROVIDING ENHANCED CONCATENATION, SEGMENTATION AND REASSEMBLY OF SERVICE DATA UNITS - Provided is an enhanced communication apparatus. The enhanced communication apparatus may enable a Packet Data Convergence Protocol (PDCP) layer unit to perform a part of a concatenation function, a segmentation function, and a reassembly function of a Radio Link Control (RLC) layer unit that is a sublayer of Layer 2, and may decrease a number of Packet Data Convergence Protocol Packet Data Units (PDCP PDUs) to be processed by the RLC layer unit. | 02-17-2011 |
20110069837 | METHOD OF TRANSMITTING USER MESSAGE, TERMINAL AND BASE STATION USING THE METHOD - When transmitting a user message, in a call setting period of a base station and a terminal and a radio connection state between a base station and a terminal, whenever a data transmittable channel resource is available, user messages of an amount corresponding to the available channel resource are transmitted. Therefore, user messages can be divided and transmitted according to an available channel in a call setting period. | 03-24-2011 |
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 |
20110080885 | APPARATUS AND METHOD FOR MANAGEMENT OF EXTENSION CARRIER IN BASE STATION - Provided are an extension carrier managing apparatus of a base station and a method thereof. When an extension carrier is to be added in a terminal, the extension carrier managing apparatus may compare propagation characteristics of available extension carriers with a propagation characteristic of a stand-alone carrier being used by a terminal, and may set an extension carrier having a transmission range being less than or equal to the stand-alone carrier, and has a penetration loss being greater than or equal to the stand-alone carrier and thus, may set the extension carrier where a coverage-hole does not occur. | 04-07-2011 |
20110141984 | METHOD AND SYSTEM FOR SCHEDULING SUBFRAME IN MOBILE COMMUNICATION RELAY SYSTEM - Provided is a subframe scheduling method in which a relay may transmit interval information of a service to a base station, and the base station may modify a location of a subframe based on the interval information, and thereby preventing a quality deterioration occurring due to a retransmission failure. The subframe scheduling method may include: setting and transmitting, by a base station, subframe information; setting and implementing, by a relay, a service based on the subframe information; transmitting, by the relay, interval information of the service to the base station; modifying, by the base station, the subframe information based on the interval information; and transmitting, by the base station, the modified subframe information to the relay. | 06-16-2011 |
20110143802 | PAGING MANAGEMENT METHOD AND SYSTEM FOR HOME EVOLVED BASE STATION - Provided is a paging management system that may transfer a paging message to only a small base station where a terminal is estimated to be positioned, and thereby decrease a traffic amount required to transfer the paging message. A paging management method may include: configuring a virtual tracking area by grouping a plurality of small base stations according to a position of a small base station accessed by a terminal; verifying a final small base station accessed by the terminal when a paging message is to be transmitted to the terminal; and transferring the paging message to small base stations of the virtual tracking area including the final small base station. | 06-16-2011 |
20110149913 | METHOD AND SERVING BASE STATION FOR DETERMINING HANDOVER TYPE, AND METHOD FOR HANDOVER BETWEEN BASE STATIONS IN WIRELESS MOBILE COMMUNICATION SYSTEM USING CARRIER AGGREGATION - Provided are a method and a base station for determining a handover type, and a method for handover between base stations in a wireless communication system using carrier aggregation. A serving base station may collect measurement information required to determine an optimal frequency band set from a neighboring base station and a user equipment. The serving base station may determine an optimal frequency band set for downlink handover and uplink hand over, and determine a type of the downlink handover and the uplink handover by performing data processing of the collected measurement information. | 06-23-2011 |
20110202590 | METHOD OF RANDOMIZING OPERATION START POINT IN TIME OF MACHINE TYPE TERMINAL IN MOBILE COMMUNICATION SYSTEM - Provided is a machine type communication terminal that may decrease load of a network and a server by performing an operation at different points in times. The machine type communication terminal may transmit data to the server via the network. A plurality of machine type communication terminals, the network, and the server may randomize operation start points in times of the machine type communication terminals in order to differentiate the operation start points in times. | 08-18-2011 |
20120064927 | BASE STATION AND USER EQUIPMENT FOR PERFORMING CoMP TRANSMISSION AND METHOD THEREOF - A base station, a user equipment, and a method for operating a cooperative multipoint (CoMP) transmitter and receiver (Tx/Rx) are disclosed. The operating method includes receiving, from a peripheral cell, precoding matrix index (PMI) information to be used by a user equipment of the peripheral cell, and transmitting the received PMI information to target user equipments allocated with an entire frequency range, among a plurality of user equipments present in a current cell. | 03-15-2012 |
20120165023 | MOBILITY MANAGEMENT METHOD FOR USE IN CELLULAR MOBILE COMMUNICATION SYSTEM - Disclosed is a mobility management method for use in a cellular mobile communication system. The mobility management method is configured to save radio resources and provide a stable service by detecting a cell in which a dwell time of user equipment (UE) is short as an island cell and performing a direct handover (HO) to an appropriate cell without handing over the UE to the island cell. There are provided three methods including a base station-based method, a UE measurement-based method, and a UE history-based method according to how to measure a dwell time in which the UE stays in a cell, a component in which obtained information is received within a network, and how to process an HO using the information. | 06-28-2012 |
20120165028 | METHOD OF CONTROLLING TRANSMISSION POWER OF FEMTOCELLS FOR INTERFERENCE CONTROL - Disclosed is a method of controlling transmission power of femtocells for interference control. The method includes (a) setting transmission power of femtocells to initial transmission power, (b) establishing inequalities between received signal to interference ratios (SIRs) of I user terminals and SIRs satisfying service requirements of the terminals as I simultaneous inequalities, (c) identifying whether the inequalities constituting the simultaneous inequalities are satisfied, and (d) maintaining currently adjusted transmission power and stopping transmission power adjustment of the femtocells if all the inequalities are satisfied in operation (c), wherein operations (c) and (d) are iterated while inequalities are sequentially selected one by one from at least some inequalities if at least some inequalities are not satisfied in operation (c) and transmission power is adjusted one by one in terms representing the transmission power of femtocells in the inequalities. | 06-28-2012 |
20120165032 | METHOD OF CONTROLLING INTEFERENCE FROM FEMTO CELLS IN CONSIDERATION OF MACROCELL - A method of controlling femtocell interference considering a macrocell is provided. The method of controlling the interference includes a method of setting transmission power of the femtocell and methods of avoiding the interference of the femtocell. The methods of avoiding the interference include a PRB rotation method, a PRB transmission power restriction method, a hybrid method and a UB rotation method. The method of setting the transmission power and the methods of avoiding the interference may be implemented independently or implemented in combination with each other. Hence, according to the present invention, the femtocell itself can control the interference without affecting an interface of an existing macrocell base station and without signaling through the interface with the macrocell. | 06-28-2012 |
20130148596 | RESOURCE MANAGEMENT SYSTEM AND METHOD OF CENTRALIZED BASE STATION IN MOBILE COMMUNICATION NETWORK - A resource management system and method of a centralized base station in a mobile communication network are provided. The resource management system of the network communication separates a radio unit (RU) and a digital unit (DU) which are combined in the related art to thereby enable the RU and DU to be interlocked via an optical cable, installs each RU in a service area connected with terminals with respect to a plurality of base stations, and installs the integrated DUs in a single large system to thereby operate the DUs as an integrated base station, and therefore it is possible to effectively use DU resources, which are distributed and operated, through integrated management. | 06-13-2013 |
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 |
20140106768 | METHOD OF TRANSMITTING USER MESSAGE, TERMINAL AND BASE STATION USING THE METHOD - When transmitting a user message, in a call setting period of a base station and a terminal and a radio connection state between a base station and a terminal, whenever a data transmittable channel resource is available, user messages of an amount corresponding to the available channel resource are transmitted. Therefore, user messages can be divided and transmitted according to an available channel in a call setting period. | 04-17-2014 |
20140295859 | METHOD OF SELECTING A PLURALITY OF CELLS AND METHOD OF DISTRIBUTED-TRANSMITTING DATA FOR ENHANCING TRANSMISSION RATE OF MOBILE DATA IN WIRELESS OVERPLAY NETWORK - A method of selecting a plurality of cells and a method of distributed-transmitting data to enhance mobile data transmission rate in a wireless overlay network are disclosed. A cell selection method which selects a cell for distributed-transmission of data in a wireless overlay network of a plurality of cells may include receiving, by a base station, a request for distributed data transmission from a mobile terminal, and selecting a plurality of wireless communication devices for distributed-transmission of data to the mobile terminal among adjacent wireless communication devices to the mobile terminal based on received signal strength (RSS) information on the mobile terminal with respect to the adjacent wireless communication devices, available resource information on the adjacent wireless communication devices and a service profile of the mobile terminal. | 10-02-2014 |