Patent application number | Description | Published |
20120178448 | DATA COMMUNICATION METHOD AND APPARATUS VIA INTERLOCK BETWEEN HETEROGENEOUS NETWORKS IN RADIO ACCESS SYSTEM SUPPORTING MULTI RADIO ACCESS TECHNOLOGY - The present invention relates to a method for transmitting and receiving data via a first base station supporting a first radio access technology (RAT) and a second base station supporting a second RAT in a radio access system supporting a multi-radio access technology, and the method may include allowing the first base station to perform a registration procedure with the second base station; and allowing the first base station to transmit control information required for accessing the second base station to a terminal supporting multi-RAT (multi-RAT terminal), wherein the control information comprises beacon frame transmission timing information of the second base station, and the beacon frame transmission timing is maintained in transmission timing of a downlink frame or downlink sub-frame of the first base station with relative timing offset interval. | 07-12-2012 |
20120224660 | Method and Apparatus for Performing Demapping in Wireless Communication System - A method and apparatus for performing demapping in a wireless communication system utilizing a modulo operation are disclosed. The demapping method of a receiver in a wireless communication system includes receiving an input signal and first information indicating whether a first modulo operation is performed on the input signal from a transmitter; if the first information indicates execution of the first modulo operation, performing a second modulo operation of the input signal, and acquiring a reception signal; generating a maximum function value having a highest probability that the reception signal corresponds to a candidate constellation point of an extended constellation; and generating a log-likelihood ratio (LLR) using the generated maximum function value. | 09-06-2012 |
20130022018 | METHOD AND APPARATUS FOR TRANSMITTING A BROADCASTING SERVICE IN A SYSTEM THAT SUPPORTS MACHINE TO MACHINE COMMUNICATIONS - The present invention relates to a method for transmitting a broadcasting service in a system that supports machine to machine communications, the method comprising: transmitting an event registration message to a base station for the registration of an event at the time of occurrence; receiving from the base station an event registration response that contains information on a reserved downlink resource area in the base station to transmit the vent occurrence to other terminals; and broadcasting the event occurrence to the other terminals via the reserved downlink resource area. | 01-24-2013 |
20130046841 | GROUP-BASED M2M COMMUNICATION METHOD - A specific M2M communication device according to the present invention is grouped with other M2M communication devices, and performs communication with a base station as a representative of the group. To this end, at least one of location information, battery information and signal quality information of a corresponding M2M communication device is provided to a base station during the initial network entry with the base station. On the basis of this, the base station then provides a message announcing that the specific M2M communication device has been selected as a representative of the group (also called a ‘group head’), together with a group ID and a group head ID. Accordingly, the M2M communication device thus selected as the representative of the group is able to perform the transmission of uplink and/or downlink signals with the base station, while representing the group. | 02-21-2013 |
20130058284 | METHOD AND APPARATUS FOR PERFORMING UPLINK RANGING IN A WIRELESS ACCESS SYSTEM - The present description relates to a method in which a terminal in an idle mode performs network reentry in a wireless access system, wherein the method comprises: a step of receiving, from a base station, control information containing a first parameter and a second parameter for determining a frame in which uplink ranging is to be performed; and a step of performing uplink ranging for network reentry with the base station on the basis of the control information, wherein the first parameter indicates the location of a superframe in which uplink ranging is to be performed, and the second parameter indicates the frame duration in the superframe which is indicated by the first parameter and in which uplink ranging is performed. | 03-07-2013 |
20130059564 | METHOD AND APPARATUS FOR PERFORMING HANDOVER IN CONSIDERATION OF AUTHENTICATION PROCEDURE - A handover performing method and apparatus are provided to allow a terminal to effectively perform handover when it moves from a cell of a base station supporting a legacy system to a cell of a base station supporting an advanced system. The method for performing handover by a terminal, includes: acquiring information regarding a target base station through scanning; transmitting a ranging request message including indication information indicating direct handover to the target base station to the target base station; receiving a ranging response message including a handover procedure optimization flag from the target base station; and performing a network entry procedure toward the target base station according to the handover procedure optimization flag, wherein, in the network entry procedure, a key agreement procedure with the target base station is performed by using first authentication information which has been used in a connection with a serving base station. | 03-07-2013 |
20130072196 | METHOD FOR PERFORMING HANDOVER IN BROADBAND WIRELESS ACCESS SYSTEM - The present invention relates to an efficient handover (HO) procedure when a base station having a relatively narrow coverage and a macro base station are both present. A method for performing a handover by a mobile station (MS) according to one embodiment of the present invention comprises the steps of: determining the type of a target base station that satisfies the pre-set handover trigger conditions; starting the handover procedure for the target base station when the target base station is a first type base station according to the determined results, and starting a first timer when the target base station is a second type base station having narrower coverage than the first type base station according to the determined results; and determining whether communication with the target base station is possible after the first timer has been completed, if the first timer had been started. | 03-21-2013 |
20130072245 | M2M DEVICE OPERATING IN AN IDLE MODE AND METHOD FOR PERFORMING COMMUNICATION BETWEEN A BASE STATION DEVICE AND THE M2M DEVICE - Disclosed are an M2M device operating in an idle mode and a method for performing communication between a base station device and the M2M device. In the M2M device operating in an idle mode and communicating with a base station according to the present invention, a receiver may receive a first message and a second message from the base station. The first message includes information indicating that first data, the size of which is smaller than a predetermined data size, is transmitted, and information regarding the time that the first data is transmitted. The second message includes the first data. A processor may perform a control to receive the first data from the base station on the basis of the information indicating that the first data is transmitted and the information regarding the time that the first data is transmitted. | 03-21-2013 |
20130089032 | METHOD AND APPARATUS FOR INITIAL ACCESS TO A NETWORK IN A FEMTO SYSTEM - The present invention relates to a wireless access system to which a femto cell is applied. In addition, the present invention relates to an initial access method in a femto cell environment, a method for handover to a femto cell and apparatus for supporting the methods. | 04-11-2013 |
20130090118 | APPARATUS AND METHOD FOR UPDATING CONTROL INFORMATION OF A TARGET BASE STATION DURING HANDOVER OPERATION IN A BROADBAND WIRELESS COMMUNICATION SYSTEM - Disclosed herein is an operation method of a terminal for updating control information of a target base station in a handover procedure, and the method may include receiving a neighbor advertisement message comprising control information of at least one neighbor base station comprising the target base station from the serving base station; transmitting a handover request message comprising first change count information indicating a neighbor advertisement message version to the serving base station; receiving a handover command message comprising delta control information different from the control information included in the neighbor advertisement message from the serving base station; and updating the control information of the target base station using the received delta control information. | 04-11-2013 |
20130121296 | METHOD AND APPARATUS FOR TRANSCEIVING CONTROL INFORMATION AND/OR DATA TO/FROM A BASE STATION VIA AN ANCHOR TERMINAL IN A WIRELESS ACCESS SYSTEM SUPPORTING MACHINE-TYPE COMMUNICATION - The present description relates to a method in which a first terminal communicates with a base station via a second terminal in a wireless access system supporting machine-type communication (MTC). The method comprises the following steps: transmitting, to the second terminal, uplink data to be transmitted to the base station; receiving, from the base station, control information corresponding to the quality of a link between the first terminal and the second terminal; and retransmitting the uplink data to the second terminal in accordance with the received control information, wherein the control information includes information on the delay between the second terminal and the base station, and information on the measured quality of the link between the first terminal and the second terminal | 05-16-2013 |
20130136014 | SCANNING METHOD AND APPARATUS IN WIRELESS ACCESS SYSTEM - A method for scanning assigned carriers in a multicarrier system may include receiving a multicarrier advertisement message from a base station, the multicarrier advertisement message including scan reporting trigger control information of assigned secondary carriers, performing scanning for the assigned secondary carriers, and reporting the scan results to the base station when a specific metric measured by the scanning meets a condition set in the scan reporting trigger control information. | 05-30-2013 |
20130142151 | DATA COMMUNICATION METHOD AND APPARATUS VIA INTERLOCK BETWEEN HETEROGENEOUS NETWORKS IN RADIO ACCESS SYSTEM SUPPORTING MULTI RADIO ACCESS TECHNOLOGY - The present invention relates to a method for transmitting and receiving data via a first base station supporting a first radio access technology (RAT) and a second base station supporting a second RAT in a radio access system supporting a multi-radio access technology, and the method may include allowing the first base station to perform a registration procedure with the second base station; and allowing the first base station to transmit control information required for accessing the second base station to a terminal supporting multi-RAT (multi-RAT terminal), wherein the control information comprises beacon frame transmission timing information of the second base station, and the beacon frame transmission timing is maintained in transmission timing of a downlink frame or downlink sub-frame of the first base station with relative timing offset interval. | 06-06-2013 |
20130165115 | EFFICIENT HANDOVER/SCANNING TRIGGER METHOD IN A BROADBAND WIRELESS ACCESS SYSTEM SUPPORTING A MULTICARRIER - The present invention relates to a broadband wireless access system, and more particularly, to a method of preventing a terminal from performing an unnecessary operation in a multicarrier environment, and a device for performing the method. An operating method of a terminal operating as a carrier aggregation mode in a broadband wireless access system supporting a multi carrier according to an embodiment of the present invention includes: obtaining system information on a neighbor base station and trigger function information applied to a carrier aggregation mode through a first broadcast message broadcasted from a serving base station; scanning a channel state for at least one carrier of a neighbor base station supporting a multicarrier by using the obtained system information; and transmitting a second message to the serving base station if the scanning result satisfies a condition based on the trigger function information. | 06-27-2013 |
20130178215 | METHOD AND APPARATUS FOR EFFICIENT ZONE SWITCH OPERATION IN A BROADBAND WIRELESS ACCESS SYSTEM - A wireless access system and, more particularly, a method and apparatus for more efficiently performing zone switch are disclosed. The method of performing zone switch by an advanced mobile station (AMS) in a mixed-mode advanced base station (ABS) which operates in a mixed mode of a broadband wireless access system includes receiving a ranging response (RNG-RSP) message including system information of an AMS support zone from a legacy zone (LZone) of the ABS, and performing ranging to the AMS support zone using the system information. | 07-11-2013 |
20130272265 | METHOD OF CHANGING A ZONE IN A BROADBAND WIRELESS ACCESS SYSTEM - The present invention relates to a broadband wireless access system, and more particularly, to a method of performing a zone change more promptly in a base station where an advanced terminal operates in a mix mode. A method for an advanced terminal (AMS) to perform a zone change in an advanced base station (mix mode ABS), which operates in a mix mode of a broadband wireless access system according to an embodiment of the present invention includes: receiving a ranging response message (RNG-RSP) including system information on an advanced terminal supporting zone (MZone) from a legacy zone (LZone) of the advanced base station; and performing ranging in the advanced terminal supporting zone by using the system information. | 10-17-2013 |
20130281093 | METHOD FOR CONTROLLING UPLINK POWER IN A BROADBAND WIRELESS ACCESS SYSTEM - The present invention relates to a broadband wireless access system, and more particularly, to a method for efficiently determining power for ranging performed by a terminal on a target base station or a target region during handover or during changing of a region. A method for controlling uplink power for network reentry of a terminal from a first region to a second region in a broadband wireless access system, according to an embodiment of the present invention, comprises the steps of: receiving a media access control (MAC) management message including a power control parameter that is to be applied to the second region from the first region; and performing ranging to the second region by applying the power control parameter. | 10-24-2013 |
20130287014 | DATA COMMUNICATION METHOD AND APPARATUS VIA INTERLOCK BETWEEN HETEROGENEOUS NETWORKS IN RADIO ACCESS SYSTEM SUPPORTING MULTI RADIO ACCESS TECHNOLOGY - The present invention relates to a method for transmitting and receiving data via a first base station supporting a first radio access technology (RAT) and a second base station supporting a second RAT in a radio access system supporting a multi-radio access technology, and the method may include performing a network (re)entry procedure with the first base station; receiving control information required for an access to the second base station located in the vicinity of the first base station from the first base station; performing a scanning procedure for at least one second base station located in the vicinity of the first base station; receiving an instruction message instructing an access to the second base station from the first base station; and performing an access procedure with the second base station. | 10-31-2013 |
20130315389 | TRAFFIC ENCRYPTION KEY MANAGEMENT FOR MACHINE TO MACHINE MULTICAST GROUP - A method for decrypting multicast data by a mobile station in a wireless communication system is described. The method includes receiving an identifier of a group from a base station, receiving parameters for generating a group traffic key from the base station, wherein the parameters include an authentication key for the group, a group security seed and a counter, performing a key derivation function to generate the group traffic key based on the identifier and the parameters and decrypting multicast data using the group traffic key. | 11-28-2013 |
20140064229 | METHOD AND APPARATUS FOR TRANSMITTING DISCOVERY SIGNAL IN WIRELESS COMMUNICATION SYSTEM - The present invention relates to a wireless communication system, and more specifically to a method and an apparatus for transmitting a discovery signal in a wireless communication system. According to one aspect of the present invention, a method for enabling a terminal for supporting multiple radio access technologies to perform communication includes the steps of: communicating first data to a base station; receiving first information for notifying the presence of a first AP from the first AP as at least one AP among a plurality of APs; and communicating second data using the first AP, wherein the first information is received by using a first resource as at least a part of all resources which the base station uses, a first radio access technology can be applied between the terminal and the base station, and a second radio access technology can be applied between the terminal and the first AP. | 03-06-2014 |
20140206408 | METHOD AND APPARATUS FOR SUPPORTING GROUP DELEGATOR IN WIRELESS CONNECTION SYSTEM SUPPORTING MACHINE-TO-MACHINE COMMUNICATION - The present invention provides various methods and an apparatuses for supporting a group delegator (GD) in a wireless access system supporting Machine to Machine (M2M) communication. A method for selecting the group delegator (GD) in a wireless access system supporting the Machine to Machine (M2M) communication, according to one embodiment of the present invention, comprises the steps of: an M2M device belonging to an M2M group receiving a broadcasting message including a first critical value, which is used for selecting the GD; an M2M device generating a first random value, which is used for selecting the GD; and selecting the GD by comparing the first critical value and the first random value. | 07-24-2014 |
20150036527 | SCANNING METHOD AND APPARATUS IN WIRELESS ACCESS SYSTEM - A method for scanning assigned carriers in a multicarrier system may include receiving a multicarrier advertisement message from a base station, the multicarrier advertisement message including scan reporting trigger control information of assigned secondary carriers, performing scanning for the assigned secondary carriers, and reporting the scan results to the base station when a specific metric measured by the scanning meets a condition set in the scan reporting trigger control information. | 02-05-2015 |