Patent application number | Description | Published |
20090017822 | METHOD OF RELEASING LINK CONNECTION AFTER HANDOVER IN MULTI-MODE MOBILE TERMINAL AND TERMINAL THEREOF - The present invention relates to a method of releasing a network connection with a link of a medium access control layer previously accessed before performing a handover to a heterogeneous network in a mobile terminal configured with a multi-mode (e.g., interface between IEEE802.16 and IEEE802.il, interface between IEEE802.16 and 3GPP/3GPP2 or interface between IEEE802.il and 3gPP/3GPP2). In a multi-mode mobile terminal, the present invention includes the steps of creating a connection with a new link, generating a trigger event indicating a connection creation with the new link, and generating a trigger event instructing a connection release from an old link. | 01-15-2009 |
20090046637 | Method of Controlling Data Transmission for Mbs in Broadband Wireless Access System - The present invention relates to a method of controlling data transmission for a multimedia/broadcast service (MBS) in a broadband wireless access system. In a data transmission control method for a multicast broadcast service (MBS) in a broadband wireless access system, the present invention includes the steps of receiving information for a downlink burst profile suitable for receiving MBS data from at least one mobile subscriber station, selecting a downlink burst profile suitable for transmitting the MBS data using the information for the downlink burst profile, and transmitting the MBS data to the at least one mobile subscriber station using the selected downlink burst profile. | 02-19-2009 |
20090052387 | METHOD FOR TRANSMITTING AND RECEIVING DATA WITH SUPERFRAME STRUCTURE - A method of transmitting and receiving data using a superframe structure is disclosed. A method for transmitting data through a superframe including a superframe header, includes generating the superframe which includes a data region including user data and includes a dedicated control region including data region allocation information indicating resource allocation for the data region, and transmitting the superframe. The dedicated control region is arranged at least one of locations except for a subframe of the superframe header. A user equipment which does not have to transmit and receive data decodes only data region allocation information using information of the data region indicated by a dedicated control region, thereby minimizing power loss, reducing a feedback delay, and reducing system overhead using a superframe structure. | 02-26-2009 |
20090080351 | METHOD OF CONTROLLING DATA TRANSMISSION FOR MULTIMEDIA AND BROADCASTING SERVICES IN A BROADBAND WIRELESS ACCESS SYSTEM - The present invention relates to a method of controlling data transmission for a multimedia and broadcasting service in a broadband wireless access system. As an aspect of the present invention, a base station receives feedback information including burst profile information with which a terminal can receive MBS data without errors and the base station configures an appropriate burst profile and transmit the MBS data using the burst profile to the terminal, thereby reception errors in the terminal can be minimized and radio resources can be used efficiently. | 03-26-2009 |
20090176491 | MESSAGE TRANSMISSION IN WIRELESS ACCESS SYSTEM - A method for transmitting messages to alter the operating status between a mobile station and a base station in a wireless access system comprises, at the mobile station, transmitting a first message to the base station, setting a first count to a first predetermined value and enabling a first, the first message requesting a alteration in operating status between the mobile station and the base station, whereupon expiration of the first timer before receiving a second message from the base station, the count is decremented and, if the count is above a second predetermined value, the first timer is reset and the first message is retransmitted to the base station. The method also comprises, at a base station, receiving the first message, transmitting a second message to the mobile station and enabling a second timer, whereupon expiration of the second timer, the alteration in operating status is effected. | 07-09-2009 |
20090186616 | HANDOVER EXECUTION AND COMMUNICATION RESUMPTION IN WIRELESS ACCESS SYSTEM - Handover execution and communication resumption in a wireless access system is provided. Performing a handover includes communicating with a serving base station through a first communication link and receiving from the serving base station, handover information associated with at least one candidate target base station. The method also includes transmitting handover indicator to the serving base station indicating a handover operation to a selected target base station and performing a ranging procedure with the selected target base station to establish a second communication link with the selected target base station while maintaining the first communication link with the serving base station. The method also includes being released from the serving base station in response to a handover complete status message from the selected target base station to the serving base station, or resuming normal communication with the serving base station if the handover fails with the selected target base station. | 07-23-2009 |
20090215458 | MESSAGE TRANSMISSION IN WIRELESS ACCESS SYSTEM - A method for transmitting messages to alter the operating status between a mobile station and a base station in a wireless access system comprises, at the mobile station, transmitting a first message to the base station, setting a first count to a first predetermined value and enabling a first, the first message requesting a alteration in operating status between the mobile station and the base station, whereupon expiration of the first timer before receiving a second message from the base station, the count is decremented and, if the count is above a second predetermined value, the first timer is reset and the first message is retransmitted to the base station. The method also comprises, at a base station, receiving the first message, transmitting a second message to the mobile station and enabling a second timer, whereupon expiration of the second timer, the alteration in operating status is effected. | 08-27-2009 |
20090296615 | METHOD OF TRANSMITTING NETWORK INFORMATION IN BROADBAND WIRELESS ACCESS SYSTEM - A method of transmitting network information in a broadband wireless access system is disclosed, in which a base station transmits mobile IP information received from a HA or FA to a mobile station in an idle mode. The present invention includes the steps of receiving a request for entering an idle mode from a mobile station, transmitting information of an admission for entering the idle mode to the mobile station, receiving the network information from a mobility agent, and transmitting a paging message including the network information. | 12-03-2009 |
20090298504 | METHOD FOR ACQUIRING INFORMATION FOR MEDIA INDEPENDENT HANDOVER - This document is related to a method for acquiring information for media independent handover. More specifically the method comprises: submitting a media independent handover (MIH) query to a base station (BS) by sending a first request message, and receiving a response to the MIH query. Because the first request message is used for authorization, preferably the PKM message, the MS can acquire information for handover between heterogeneous networks before the MS finishes the network entry. | 12-03-2009 |
20090312021 | METHOD OF TRANSMITTING DATA FOR HANDOVER IN BROADBAND WIRELESS ACCESS SYSTEM - A data transmission method in a mobile communication system is disclosed. The present invention is suitable for retaining continuity of a data service in case that a mobile subscriber station carries out handover. The present invention includes the steps of receiving a message information (S | 12-17-2009 |
20090323634 | METHOD OF PERFORMING PROCEDURES FOR INITIAL NETWORK ENTRY AND HANDOVER IN A BROADBAND WIRELESS ACCESS SYSTEM - Disclosed is a method of performing procedures for network entry of a mobile station in a broadband wireless access system. The method includes being allocated with transmission parameters from a base station, at least one time performing a request of an uplink band for transmission of an uplink management message to the base station, and receiving a downlink message for next procedure from the base station if the uplink band is not allocated even after the lapse of a preset time period. | 12-31-2009 |
20100004002 | METHOD OF PROVIDING LOCATION PRIVACY - A method of providing location privacy of a mobile station in a wireless access system is disclosed. The method of providing location privacy of a mobile station comprises the steps of transmitting a deregistration request message to a serving base station, the deregistration message requesting entry to an idle mode; and receiving a deregistration command message from the serving base station, the deregistration command message including a temporary identifier allocated to the mobile station. In this case, the temporary identifier is an identifier for uniquely identifying the mobile station from a paging group to which the serving base station belongs. | 01-07-2010 |
20100041399 | METHOD OF PERFORMING RANGING IN A BROADBAND WIRELESS ACCESS SYSTEM - A method of performing ranging in a broadband wireless access system is disclosed. A method of performing ranging of a mobile station which is in an idle mode in a broadband wireless access system includes requesting ranging by transmitting a third ranging code to a network through a first ranging region allocated by the network to transmit a first ranging code or a second ranging code, and receiving a first ranging response message from the network, the first ranging response message including uplink transmission parameters. | 02-18-2010 |
20100046464 | METHOD OF SUPPORTING HETEROGENEOUS MODE IN A WIRELESS COMMUNICATION SYSTEM - A data communication method is disclosed, which can simultaneously support heterogeneous systems in a wireless communication system based on multiple carrier multiple access. For a dual mode between heterogeneous systems, the data communication method includes transmitting control information for a first system mode and a second system mode to a mobile station through a channel resource zone used in the first system mode, and performing data transmission and reception between the system and the mobile station through channel resource zones allocated from the first system mode or the second system mode. | 02-25-2010 |
20100061336 | METHOD OF TRANSMITTING AND RECEIVING CONTROL INFORMATION OF MULTIMODE MOBILE TERMINAL - A multi-mode mobile subscriber station (MSS) composed of several interfaces, and a method for acquiring/updating information in the case of a handover between heterogeneous networks are disclosed. A method for transmitting/receiving control information of a multi-mode mobile subscriber station (MSS) including at least two interfaces, includes: a) requesting first control information, associated with a new access point detected by a link scanning, from a network entity for providing information associated with a specific network; b) acquiring the requested first control information and second control information supplied from the new access point; and c) performing a connection to the new access point according to the first control information and the second control information. | 03-11-2010 |
20100062725 | METHOD OF TRANSMITTING AND RECEIVING A MESSAGE ASSOCIATED WITH POWER SAVING MODE IN A WIRELESS COMMUNICATION SYSTEM - Disclosed is a sleep mode in a broadband wireless access system, more particularly a method of transmitting and receiving a message associated with a sleep mode in a broadband wireless access system. The method of transmitting a message associated with a sleep mode in a broadband wireless access system includes transmitting a first message which includes a flag if a receiving side receives the first message associated with the sleep mode, the flag indicating that the receiving side transmits an acknowledgement signal to a transmitting side, and receiving the acknowledgement signal from the receiving side which has received the first message. | 03-11-2010 |
20100067467 | METHOD OF RANDOM ACCESS IN A WIRELESS SYSTEM - A random access method in a wireless communication system is disclosed. The present invention includes transmitting a bandwidth request indicator and a quick access message from a mobile station to a base station and starting a timer having a timer value determined according to an acknowledgement from the base station. | 03-18-2010 |
20100118741 | METHOD OF EMERGENCY COMMUNICATION IN BROADBAND RADIO ACCESS SYSTEM - A method of emergency communication between a mobile station and a base station in a broadband radio access system and a mobile station which supports the method of emergency communication are disclosed. The method of emergency communication is divided into a case where the mobile station requests an emergency service in a state that the mobile station is registered with the base station and a case where the mobile station requests an emergency service in a state that the mobile is not registered with the base station. In case of the one case, the mobile station requests the base station of an emergency service using a newly defined emergency code or a conventional bandwidth request code and negotiates a basic function required for an emergency service with the base station through predetermined header data. In case of the other case, the mobile station starts initial ranging using a newly defined emergency code or a conventional initial ranging code and negotiates a basic function required for an emergency service through a subscriber basic capability message (SBC-REQ/RSP). | 05-13-2010 |
20100118771 | METHOD OF TRANSMITTING PROTOCOL MESSAGE FOR MEDIA INDEPENDENT HANDOVER IN WIRELESS ACCESS SYSTEM - Disclosed is a method of transmitting a media independent handover (MIH) protocol message in a wireless access system. A method for a mobile node to transmit an MIH message in a wireless access system includes receiving a primitive including prescribed information from a first entity, generating the MIH message by mapping a transport address to the primitive, and transmitting the MIH message to one or more network nodes. According to the present invention, transmission defects of the message are effectively reduced by accurately mapping an MIHF ID and a transport address. | 05-13-2010 |
20100131663 | METHOD FOR PRE-CONFIGURATION OF IP ADDRESS IN MOBILE COMMUNICATION SYSTEM - A handover method between heterogeneous networks is disclosed. A method for pre-configuration of an IP address allows a mobile terminal to perform a handover between heterogeneous networks. Methods for relaying messages for pre-configuration of IP address and a method for relaying messages for performing MIH based on pre-configuration of IP address are also disclosed. | 05-27-2010 |
20100135210 | METHOD OF RANDOM ACCESS AND A METHOD OF TRANSPORTING INFORMATION IN BROADBAND WIRELESS ACCESS SYSTEM - A method of performing random access in a broadband wireless access system is disclosed. The method includes performing first random access through at least one of a plurality of random access channels, receiving information about the number of access-failed channels among the plurality of random access channels from a base station, when the first random access fails, and performing second random access according to a probability value calculated based on the received information. The present invention increases utilization of random access channels and can effectively schedule an uplink bandwidth, thereby providing an efficient ranging method. | 06-03-2010 |
20100135256 | METHOD FOR ALLOCATING MULTIPLE RADIO COMMUNICATION PERIODS - A method for allocating multiple radio communication periods to an MS supporting co-existence mode is disclosed. The method includes transmitting a co-existence mode request message to a BS by the MS, receiving information about the position of a start frame for the co-existence mode by a co-existence mode response message as a response to the co-existence mode request message from the BS by the MS, and receiving information about an allocated Wi-Fi beacon reception period by an unsolicited co-existence mode response message in the start frame from the BS by the MS. A frame allocation pattern for allocating periods for communications with a Bluetooth or Wi-Fi system using a frequency band adjacent to that of an IEEE 802.16m system can be provided according to an IEEE 802.16m frame structure, and an MS with multiple radio interfaces can communicate with each system reliably, while minimizing interference between systems. | 06-03-2010 |
20100157923 | METHOD FOR EFFICIENTLY PERFORMING INITIAL ACCESS IN A MULTI-CARRIER BROADBAND WIRELESS ACCESS SYSTEM - A method for efficiently performing an initial access in an MS in a multi-carrier broadband wireless access system is disclosed. The method includes scanning a plurality of carriers supported by a BS, and selecting one of the scanned carriers as a first carrier and receiving an SFH of the first carrier. The SFH of the first carrier includes at least one of a field indicating load status of the first carrier and recommended network entry carrier information including information about a second carrier in good load status. | 06-24-2010 |
20100167756 | METHOD FOR UPDATING LOCATION IN A WIRELESS COMMUNICATION SYSTEM - A method for updating a location in a wireless communication system is disclosed. The method includes transmitting a request message to enter idle mode, receiving a response message including an Identifier (ID) of a first paging group and an ID of a second paging group in response to the request message, activating a paging group location update timer, when the MS leaves an area of the first paging group, and updating a location according to the paging group location update timer. | 07-01-2010 |
20100177693 | METHOD OF MAC HEADER GENERATION AND DATA TRANSMITTING - A method of generating MAC header and a method of transmitting data using the generated MAC header are disclosed. A mobile station can receive a message from a base station, the message including an indicator for identifying a service flow (SF). If the mobile station is connected with the base station to generate the service flow, the mobile station and the base station can map the service flow with the indicator. Accordingly, the base station can generate MAC header, which includes the indicator and a parameter representing whether the MAC header has been compressed. | 07-15-2010 |
20100189054 | METHOD FOR TRANSMITTING AND RECEIVING CONTROL CHANNEL WITH ADDITIONAL INFORMATION - A method for transmitting and receiving a control channel with additional information is disclosed. To this end, a mobile station acquires information of at least one control channel, which supports additional information transmission through phase rotation, and phase rotation value information for representing the additional information, and transmits control information through any one of the control channels and the additional information through phase rotation of the control information. A base station provides information of at least one control channel, which supports additional information transmission through phase rotation, and phase rotation value information for representing the additional information, and simultaneously receives specific control information and additional information from the mobile station based on the control channel information and the phase rotation value information. | 07-29-2010 |
20100205283 | METHOD AND APPARATUS FOR UPDATING SYSTEM INFORMATION IN BROADBAND WIRELESS COMMUNICATION SYSTEM - A method for updating system information in a broadband wireless communication system in which data is transmitted and received via a superframe, includes: receiving information from a base station by means of superframes including a primary superframe header (P-SFH) and a secondary superframe header (S-SFH), wherein the information including control information transmitted via an information element of the P-SFH (P-SFH IE) and system information transmitted via at least one of information element of a subpacket (SP) of the S-SFH (S-SFH SP IE); decoding the P-SFH IE, wherein the P-SFH IE including a scheduling information bitmap indicating a transmitted S-SFH SP IEs in the superframe, a change count (CC) of the S-SFH, and a SP change bitmap indicating changing status of the S-SFH SP IEs; comparing the received CC with a previously stored CC; checking the S-SFH SP change bitmap, if there is a difference between the received CC and the stored CC; and decoding and updating corresponding SP IE of the S-SFH based on the checking result. | 08-12-2010 |
20100205500 | METHOD OF TRANSMITTING AND RECEIVING ARQ FEEDBACK INFORMATION - A method of transmitting and receiving Automatic Repeat reQuest (ARQ) feedback information in a wireless communication system is disclosed. The method of transmitting ARQ feedback information in a wireless communication system includes, at a transmitter, transmitting a Protocol Data Unit (PDU) including an extended header including an ARQ feedback Polling Request (APR) field indicating whether or not the transmitter makes a request for ARQ feedback polling, and receiving an Acknowledgement (ACK) from a receiver if the APR field indicates that the transmitter makes the request for ARQ feedback polling to the receiver. | 08-12-2010 |
20100208655 | METHOD OF TRANSMITTING PACKET FOR REDUCING HEADER OVERHEAD - A method of transmitting a packet for reducing header overhead is disclosed. That is, a detailed method of transmitting a packet including a compressed header by omitting a header including the same information as a header of a packet which is previously transmitted or omitting information overlapping with the header of the packet which is previously transmitted is provided. | 08-19-2010 |
20100208674 | METHOD FOR RECEIVING PREAMBLE FROM OTHER COMMUNICATION SYSTEM AND METHOD FOR ADAPTIVELY CHANGING THE MEASUREMENT GAP TO DISCOVER THE OTHER COMMUNICATION SYSTEM - A method for receiving a preamble signal of another communication system and a method for adaptively changing a measurement gap to discover another communication system are disclosed. A method for receiving a preamble signal from a base station of a second communication system by a communicating mobile station in a first communication system includes receiving measurement gap scheduling information from a base station of the first communication system, if a preamble signal of the second communication system is not received during an assigned measurement gap, changing the measurement gap, and receiving the preamble signal of the second communication system during the changed measurement gap. | 08-19-2010 |
20100208696 | METHOD OF FAST UPLINK DATA TRANSMISSION FOR HANDOVER - A fast uplink data transmission method for a handover is disclosed. This method effectively uses a handover signal when there is data to be transmitted to an uplink during an Intra Radio Access Technology (I-RAT) handover, such that it quickly transmits and receives uplink data. The method of transmitting uplink data in a wireless access system includes, transmitting a message including an information bit to a target base station by a mobile station during a handover, wherein the information bit indicates whether the uplink data is present, and receiving a radio resource for transmitting the uplink data from the target base station, if the information bit indicates the uplink data is present, wherein the radio resource is allocated by the target base station. So, uplink user data can be quickly transmitted to a destination while the UE performs the handover. | 08-19-2010 |
20100215020 | METHOD OF PACKET REORDERING AND PACKET RETRANSMISSION - A packet reordering method and a packet transmission method to implement reliable data communication are disclosed. The method of transmitting packets at a serving base station in case of a mobile station performing handover include, receiving a series of packets from an upper layer entity, and transmitting the series of packets one after the other to a target base station, wherein a packet of the series of packets includes an information field which represents whether the packet is the last transmitted packet. When the mobile station performs the I-RAT handover, the target serving station pre-reorders PDU packets, and transmits the reordered PDU packets to the mobile station, such that the mobile station can quickly transmit data without reordering the packets. | 08-26-2010 |
20100216474 | METHOD FOR SUPPORTING MOBILITY OF MOBILE TERMINAL, AND MOBILE TERMINAL THEREOF - A method for supporting mobility of a mobile station and the mobile station which supports the mobility are disclosed. The method of supporting the mobility of the mobile station includes receiving cell reselection information and neighbor cell information from a base station (BS) of a present cell, wherein the cell reselection information includes thresholds for determining whether the quality of the other RAT cell shall be measured or not, wherein the neighbor cell information includes a frame duration code and a frame number of a downlink frame in the other RAT cell, wherein the frame duration code indicates the start preamble of the downlink frame; determining whether a mobile station (MS) shall measure the quality of the other RAT cell or not using the thresholds; and measuring the quality of the other RAT cell and reselecting a cell or transmitting the measured result to the BS through a measurement report message according to the measured result, if it is determined that the MS would measure the quality of the other RAT cell. Accordingly, since the mobility of the mobile station between the E-UTRAN network and the other RAT cell is supported, the mobile station can continuously receive a service while maintaining current service quality although a user moves to the other RAT cell. | 08-26-2010 |
20100226389 | METHOD AND APPARATUS FOR UPDATING SYSTEM INFORMATION IN BROADBAND WIRELESS COMMUNICATION SYSTEM - A method for updating system information in a terminal in which data is transmitted by means of superframes, includes: receiving system information, scheduling periodicity information of the system information and changing information indicating changing status of the system information transmitted by means of a superframe header (SFH) from a base station; and updating the system information based on the changing information, wherein the SFH comprises a primary SFH including the changing information and a secondary SFH including at least one subpacket containing the system information, the scheduling periodicity information indicating a transmission periodicity of the subpacket is transmitted by means of the primary SFH or a predetermined subpacket, and when the terminal detects that a changed system information transmitted by means of the subpacket is not scheduled as indicated in the scheduling periodicity information, the terminal wakes up until the changed system information is received. | 09-09-2010 |
20100232329 | METHOD OF OPERATING A SLEEP MODE IN A WIRELESS COMMUNICATION SYSTEM - A sleep mode operating method in a wireless communication system is disclosed. In a sleep mode operating method in a wireless communication system according to one embodiment of the present invention, a user equipment receives a sleep response (MOB_SLP-RSP) message including a sleep cycle and a listening window from a base station. For the listening window, the user equipment receives a last PDU indication indicating whether a PDU (protocol data unit) transmitted from the base station is a last PDU. The user equipment terminates the listening window according to the last PDU indication. | 09-16-2010 |
20100246504 | METHODS OF TRANSMITTING AND RECEIVING DATA IN MOBILE COMMUNICATION SYSTEM AND DEVICE SUPPORTING THE SAME - A method and apparatus of transmitting and receiving data in a mobile communication system is disclosed. The method of transmitting and receiving data in a mobile communication system comprises receiving control information related to transmission and reception from a transmitting side, determining at least one of power saving parameter information of a talk spurt and a silence period from the control information related to transmission and reception, and receiving data from the transmitting side by applying the power saving parameter information depending on the talk spurt and the silence period. According to the above method, unnecessary data reception is not performed in the silence period. | 09-30-2010 |
20100251083 | METHOD AND APPARATUS FOR TRANSMITTING AND RECEIVING CONTROL INFORMATION IN A WIRELESS COMMUNICATION SYSTEM - A method and apparatus for transmitting and receiving control information in a wireless communication system are disclosed. The control information transmission method includes masking a Cyclic Redundancy Check (CRC) by a CRC mask including a bit stream of a predetermined length and an indicator indicating the bit stream, and transmitting control information including the masked CRC to at least one Mobile Station (MS). The indicator indicates whether the bit stream included in the CRC mask includes a Random Access IDentifier (RAID). | 09-30-2010 |
20100254323 | BAND ADAPTIVE MODULATION AND CODING METHOD SHARING RESOURCES WITH NEIGHBOURING BASE STATIONS AND MOBILE STATION SUPPORTING THE SAME - A band adaptive modulation and coding method sharing resources with neighboring base stations and a mobile station supporting the same are disclosed. The mobile station identifies a channel status for each band by periodically scanning a neighboring base station, and requests a service base station to convert a current mode to a band sharing AMC mode if the identified channel stats satisfies a predetermined condition. The mobile station can use CQICH of 4 bits or 6 bits to request mode conversion. Selectively, the service base station can request the mobile station of channel status information of a neighboring base station to determine mode conversion. | 10-07-2010 |
20100260128 | METHOD FOR TRANSMITTING AND RECEIVING ACKNOWLEDGMENT IN A WIRELESS COMMUNICATION SYSTEM - A method for transmitting and receiving an ACKnowledgment (ACK) in a wireless communication system is disclosed. The method includes transmitting a bandwidth request indicator to a Base Station (BS), and receiving an ACK for the transmitted bandwidth request indicator from the BS, the ACK including a resource start offset field. The resource start offset field indicates an index of a starting resource unit of resources allocated by the ACK. | 10-14-2010 |
20100260241 | METHOD OF DATA BLOCK TRANSMITTING - A method of transmitting data to guarantee reliability and, more particularly, a method of efficiently transmitting data by adjusting the size of data blocks according to a channel environment are provided. The method includes dividing input data into a plurality of blocks and generating one or more block sets using the plurality of blocks, coding a first block set of the one or more block sets and transmitting a predetermined number of coded blocks in the first coded block set to a receiver, receiving a signal indicating the state of a channel environment from the receiver, and packing a more increased or decreased number of coded blocks than the predetermined number of coded blocks according to the signal and transmitting the coded blocks to the receiver. By this configuration, it is possible to efficiently adjust a block error rate by adaptively increasing or decreasing the size of blocks according to the channel environment. | 10-14-2010 |
20100304743 | METHOD FOR MANAGING NEIGHBOR FEMTO BS LIST IN A BROADBAND WIRELESS ACCESS SYSTEM - A method for updating a neighbor list at a femto Base Station (BS) is disclosed. The method includes broadcasting a first broadcast message including information about an unavailable time interval during which scheduling is not performed for Mobile Stations (MSs), scanning at least one neighbor BS during the unavailable time interval, and updating the neighbor list according to a result of the scanning. | 12-02-2010 |
20100308953 | FUSE LAYOUT STRUCTURE OF SEMICONDUCTOR DEVICE - A fuse layout structure of a semiconductor device includes a plurality of fuses in a fuse open area, wherein three neighboring fuses of the plurality of fuses form a fuse unit, and at least one of the fuses partially overlaps at least one of the other fuses of the same fuse unit in the fuse open area. | 12-09-2010 |
20100323647 | METHOD FOR CONTROLLING POWER SAVING MODE OF UE IN THE MOBILE COMMUNICATION SYSTEM - A method for controlling, a power saving mode of a mobile station (MS) in a mobile communication system is disclosed. The method differently defines operations of power saving modes of individual cases in association with message traffic distinguished from user traffic of a service, so that it can effectively reduce power consumption of the mobile station (MS). Firstly, the listening window of the power saving mode is used. Secondly, a method for transmitting a request message for pending the sleep mode is used. If the sleep-mode pending is requested, the sleep-mode resume message may be used in the case of a reactivation, or the reactivation can be automatically performed if a current time reaches a predetermined time. | 12-23-2010 |
20100323749 | METHOD FOR PERFORMING DOWNLINK/UPLINK HANDOVER - A method for performing a handover in a mobile communication system, which is capable of independently performing an uplink handover and a downlink handover, is disclosed. An uplink channel status of a base station is checked and the uplink handover to a base station having a good uplink channel status is performed. A downlink channel status of a base station is checked and the downlink handover to a base station having a good downlink channel status is performed. Accordingly, an uplink base station and a downlink base station may be different from each other. Transmission/reception efficiency can be improved by independently performing the handover. | 12-23-2010 |
20110032899 | METHOD OF PAGING USING HEADER - A method for paging in a wireless access system is disclosed. A method for efficiently paging a mobile station of an idle mode comprises allocating an identifier of a large paging group and an identifier of a specific one of small paging groups included in the large paging group to a broadcast channel region and transmitting a header including the broadcast channel region to the terminal. Accordingly, the present invention enables efficient paging. | 02-10-2011 |
20110041041 | COOPERATIVE SYMBOL LEVEL NETWORK CODING IN MULTI-CHANNEL WIRELESS NETWORKS - Disclosed is a new solution to maximize throughput in wireless networks even when unpredictable and time-varying error exist. The present invention adapts to take an advantage of a network coding at a symbol level in multi-channel wireless networks. By operating the network coding at the symbol level and using soft decision values, the present invention is able to exploit both time and cooperative diversity in realistic multi-channel wireless networks, to adapt to time-varying and bursty channel errors, and to efficiently collect as many correct symbols as possible at the receiver. | 02-17-2011 |
20110096752 | HANDOVER SUPPORT METHOD USING DEDICATED RANGING CODE - The present invention discloses a variety of methods of supporting handover in a wireless access system. A handover support method according to an embodiment of the present invention includes the steps of: transmitting a handover request message to a first base station (serving base station); receiving a handover response message (UL grant or UL-MAP message) containing authentication information (M) from a second base station (target base station); deriving a dedicated code index (DCI) for instructing a dedicated ranging code by using the authentication information (M); transmitting the dedicated ranging code to the second base station on a non-contention basis; and receiving a ranging response message as a response for the dedicated ranging code. | 04-28-2011 |
20110116430 | METHOD OF SUPPORTING OPERATION OF SLEEP MODE IN A WIDEBAND RADIO ACCESS SYSTEM - A method of supporting operation of sleep mode in a wideband radio access system is disclosed. More specifically, a mobile subscriber station (MSS) which determines a frame offset information for synchronizing listening windows of at least one MSS that is in sleep mode, and transmits the determined framed offset information to at least one MSS. | 05-19-2011 |
20110116467 | DATA RECEPTION AND TRANSMISSION METHOD AND APPARATUS FOR POWER SAVING IN COMMUNICATION SYSTEM USING MULTIPLE CARRIERS - The present invention relates to a multi-carrier resource utilization method and apparatus for power saving in a communication system using a multi-carrier, in which the activation of a secondary carrier for transmitting and receiving data traffic between a terminal and a base station is determined according to the QoS (Quality of Service) requirements such as a data traffic status between the terminal and the base station, a maximum sustained traffic rate, a maximum traffic burst size, or the like, and an indication message (Indication) indicating this is transferred to the terminal through a primary carrier to transmit and receive data traffic through the activated secondary carrier. | 05-19-2011 |
20110134893 | METHOD OF TRANSMITTING AND RECEIVING PAGING INFORMATION - Various methods of transmitting paging information in a wireless access system are disclosed. A method of transmitting paging information from a base station belonging to at least one paging groups according to one embodiment of the present invention includes the steps of allocating a paging group offset (PGO) per one specific one of at least one paging groups, transmitting a message including one paging group offset (PGO) per one specific paging group, and transmitting a broadcast channel (BCH) including paging group formation on the specific paging group at a timing point indicated by the paging group offset. | 06-09-2011 |
20110149912 | APPARATUS AND METHOD FOR SUPPORTING HANDOVER IN A MULTI-CARRIER COMMUNICATION SYSTEM - The present invention relates to an apparatus and method for supporting handover in a communication system using a multi-carrier approach. The method includes transmitting a handover request message to a serving base station (BS) through a first carrier; receiving a handover response message including neighboring base station information and temporary carrier information capable of performing a handover procedure from the serving base station through the first carrier; selecting a target base station (BS) through the neighboring base station information received from the serving base station; transmitting a handover (HO) indication message indicating a handover to the target base station to the serving base station through the first carrier; transmitting a ranging request message for synchronizing an uplink channel with the target base station to the target base station through the temporary carrier; and receiving a ranging response message from the target base station. | 06-23-2011 |
20110163847 | METHOD FOR RECEIVING AND TRANSMITTING A PAGING MESSAGE - A method for receiving and transmitting a paging message is disclosed. A method for receiving a paging message in an idle mode of a mobile station comprises receiving a paging indicator channel included in a super frame header from a base station; if a paging message of the mobile station exists after identifying the paging indicator, identifying a wake-up time of the mobile station from mapping information of the paging indicator channel; and receiving the paging message from the base station by waking up at the wake-up time. According to the embodiments of the present invention, the paging indicator channel including information useful for the mobile station to receive the paging message is added to the IEEE 802.16m frame structure, whereby the power consumed to receive the paging message can be reduced. | 07-07-2011 |
20110173517 | SYMBOL-LEVEL RANDOM NETWORK CODED COOPERATION WITH HIERARCHICAL MODULATION IN RELAY COMMUNICATION - Disclosed is a novel cooperative communication strategy jointly using symbol-level random network coding and hierarchical modulation in order to effectively minimize packet error rate in error prone wireless networks. The source (or sender) broadcasts random network coded symbols with hierarchical modulation to the relays and the destination (or receiver). In following time slots, the relays, which have successfully decoded the original packet, transmit additional random network coded symbols to the destination. By applying the present disclosure into a multi-hop relay consumer device network, which comprises a set of consumer devices, error free transmission with high efficiency can be achieved. | 07-14-2011 |
20110176507 | METHOD AND APPARATUS FOR TRANSMITTING AND RECEIVING CONTROL CHANNEL IN A MULTI-CARRIER COMMUNICATIONS SYSTEM - The present invention relates to a method and apparatus for transmitting and receiving data in a multi-carrier communications system. The data transmission/receiving method uses multiple carriers including a primary carrier that is capable of transmitting and receiving data traffic and PHY/MAC control information between a terminal and a base station and at least one secondary carrier that transmits and receives down-link data traffic between the terminal and the base station. The method comprises: generating an MPDU (MAC Protocol Data Unit) to be sent to a PHY (Physical) layer in an MAC (Medium Access Control) layer; performing channel-coding and modulation on the MPDU to generate a modulated symbol sequence in the PHY layer; segmenting the modulated symbol sequence into multiple symbol sequences; and allocating the multiple segmented symbol sequences to multiple carriers, respectively, to perform IFFT (Inverse Fast Fourier Transform) and transmit to a terminal, wherein control information on the multiple carriers is allocated to a control channel region of the primary carrier and transmitted via the primary carrier. | 07-21-2011 |
20110201311 | METHOD OF INITIAL ACCESS IN A WIRELESS COMMUNICATION SYSTEM - A method of initial access in a wireless communication system is disclosed. A method of initial access of a mobile station in a wireless communication system with femtocells comprises selecting a base station to which the mobile station requests information of femto cell base stations which can serve the mobile station and exist around the mobile station through scanning downlink channel; and requesting the selected base station the information of the femto cell base stations. | 08-18-2011 |
20110205972 | APPARATUS AND METHOD FOR TRANSMITTING A MAC PDU BASED ON MAC HEADER TYPE INFORMATION - An Apparatus and methods for communicating in a wireless access system using a medium access control protocol data unit (MAC PDU) is disclosed. The method comprises steps of receiving, by a mobile station (MS) from a base station (BS), a dynamic service addition request (AAI_DSA-REQ) message requesting to create a service flow, wherein the AAI_DSA-REQ message comprises a first MAC header type parameter indicating a type of a MAC header included in the MAC PDU of the service flow and a flow identifier (FID) identifying a connection associated with the service flow; transmitting, by the MS to the BS, a dynamic service addition response (AAI_DSA-RSP) message in response to the AAI_DSA-REQ message, wherein the AAI_DSA-RSP message comprises a second MAC header type parameter indicating the type of a MAC header included in the MAC PDU of the service flow; and communicating with the BS using the MAC PDU comprising the MAC header indicated by the second MAC header type parameter; wherein the MAC header type parameter indicates one of a generic MAC header (GMH) for general data packet transmission and a short-packet MAC header (SPMH) for small data packet transmission and a non-ARQ connection. | 08-25-2011 |
20110205993 | METHOD FOR ALLOCATING UPLINK RESOURCES USING QoS PARAMETER - A method for allocating uplink resources using a Quality of Service (QoS) parameter is disclosed. The method includes receiving a Bandwidth Request (BR) indicator including a station Identifier (ID) and a QoS parameter from a Mobile Station (MS), estimating uplink resources to be allocated to the MS using the station ID and the QoS parameter, and transmitting information about the estimated uplink resources to the MS by an uplink grant message. Thus, the overhead of an uplink allocation request transmitted for allocation of uplink resources is minimized. When additional information such as a BR size, etc. is used, resources are efficiently allocated. | 08-25-2011 |
20110211571 | UPLINK SYNCHRONIZATION IN MULTIPLE CARRIER SYSTEM - A method and apparatus of uplink synchronization in a multiple carrier system is provided. After establishing Uplink synchronization for a primary carrier, a secondary carrier based on activation information via the primary carrier is activated. A periodic ranging via the secondary carrier is performed to adjust uplink synchronization for the secondary carrier. | 09-01-2011 |
20110216730 | METHOD AND APPARATUS FOR SENDING AND RECEIVING MULTI-CARRIER INFORMATION IN MULTI-CARRIER COMMUNICATION SYSTEM - The present invention relates to a method and apparatus for sending and receiving multi-carrier information to support multi-carrier mode operations in a multi-carrier communication system. The method of the present invention for sending and receiving multi-carrier information comprises a step wherein a base station transmits system information on a supportable multi-carrier to a terminal via a broadcast message; a step wherein a unicast message is received from the terminal, including information regarding the carriers that the terminal prefers or is able to support in the multi-carrier list included in said system information; and a step wherein multi-carrier allocation information, including the primary carrier and secondary carrier that the terminal will use, is transmitted to the terminal via unicast message. | 09-08-2011 |
20110243108 | METHOD FOR ENABLING A TERMINAL TO EFFICIENTLY DETECT AND SEARCH FOR A FEMTO BASE STATION - A method for enabling a mobile station (MS) to efficiently detect and search for a femto base station is disclosed. The method comprises the steps of receiving a signal including information of a femto base station; and searching for the femto base station on the basis of the received information, wherein said received information is a sequence including at least one of the following: the entirety or a part of a femto base station ID (Identity), the entirety or a part of a cell ID, a sector ID, the entirety or a part of a CSG (Closed Subscriber Group) ID, and a frequency allocation index. In the step of receiving femto base station information, a preamble and data containing information on the femto base station are received. In the step of detecting the femto base station, the femto base station is separately detected on the basis of the received information. Here, the entirety or a part of the preamble sequence of the femto base station which is used for the separation of the femto base station is reused as a scrambling sequence for said data. | 10-06-2011 |
20110244792 | METHOD FOR SAVING POWER OF A FEMTO BASE STATION USING SLEEP PERIOD SYNCHRONIZATION - The present invention relates to a wireless access system, and more particularly, to a method for saving power of a femto base station. The present invention includes obtaining reference synchronization information used in a prescribed area to enable a first femto base station to perform a sleep mode operation, shifting to a sleep mode if a mobile station does not exist within the first femto base station, and enabling the first femto base station to be synchronized with at least one second femto base station belonging to the prescribed area using the reference synchronization information, wherein each of the femto base stations included in the prescribed area achieves synchronization of the sleep mode operation using the reference synchronization information. Accordingly, it is able to minimize power consumption of a femto base station and interference with a macro cell in a wireless access system supporting a femtocell. And, a mobile station within a femtocell is able to perform reliable communications. | 10-06-2011 |
20110256883 | METHOD FOR TRANSMITTING AND RECEIVING PAGING MESSAGES - The present invention relates to a communication method for an idle mode terminal in a wireless access system to which a femtocell is applied. The method for receiving paging messages at a terminal in a femtocell environment according to one embodiment of the present invention comprises the steps of: receiving a deregistration command message containing first paging information of a first cell region from a first base station; setting a first timer for carrying out a location update with the first base station; moving from the first cell region to a second cell region; setting a second timer for delaying the location update for a predetermined time period; and receiving a paging message in the second cell region. | 10-20-2011 |
20110261712 | METHOD OF TRANSMITTING AND RECEIVING CARRIER CONFIGURATION INFORMATION - A method for allowing a mobile station to reliably receive a paging message in a multi-carrier system is disclosed. A method for controlling a mobile station to receive carrier configuration information (CCI) in a wireless access system supporting multiple carriers includes a) receiving a first CCI including information about configuration of the multiple carriers from a first base station, b) receiving a second CCI including information about configuration of the multiple carriers from a second BS, and c) determining whether to perform location update and carrier switching using the first CCI and the second CCI. | 10-27-2011 |
20110286420 | METHOD OF RANDOM ACCESS IN A WIRELESS SYSTEM - A random access method in a wireless communication system is disclosed. The present invention includes transmitting a bandwidth request indicator and a quick access message from a mobile station to a base station and starting a timer having a timer value determined according to an acknowledgement from the base station. | 11-24-2011 |
20110287759 | METHOD FOR OPERATING SERVICE UNAVAILABLE MODE OF FEMTO BASE STATION - The present invention relates to a broadband wireless access system, and more particularly, to a method for efficiently operating a service unavailable mode of Femto base station. The method for operating a service unavailable mode of Femto base station in the broadband wireless access system according to one embodiment of the present invention, comprises the steps of: determining whether the preset condition for the operation of a service unavailable mode is satisfied; and broadcasting service unavailable mode information for indicating the state of service unavailable mode of the Femto base station in accordance with the result of determination on the preset condition. | 11-24-2011 |
20110292856 | METHOD OF ALLOCATING PAGING CARRIER AND MOBILE STATION - A method of allocating a paging carrier in a multi-carrier environment is disclosed. The method of allocating the paging carrier includes receiving a first message including first allocation information of the paging carrier, transmitting a second message for requesting entry into an idle mode to a base station; and receiving a third message including second allocation information of a changed paging carrier from the base station. At this time, the paging carrier includes a paging channel out of multiple carriers including one or more carriers. | 12-01-2011 |
20110299502 | METHOD FOR PERFORMING HANDOVER IN A MOBILE COMMUNICATION SYSTEM - Disclosed is a method for enabling a mobile terminal to perform a handover in a mobile communication system. A serving base station which supports both a first communication scheme and a second communication scheme can transmit, to the mobile terminal, a neighbor base station list broadcast message containing time offset information indicating the point of time to transmit information on a second base station which uses the second communication scheme and supports only the second communication scheme via a specific zone using the second communication scheme. The mobile terminal which has received the message can receive, from the serving base station, the information on the second base station via the specific zone on the basis of the received time offset information. | 12-08-2011 |
20110310841 | EFFECTIVE METHOD OF HANDOVER IN WIDEBAND RADIO ACCESS SYSTEM - The present invention relates t a wideband radio access system, and more particularly, to a method for enabling adjustment of timing to transmit a handover instruction message and to a mobile terminal capable of performing the method. A method for a terminal handover in a wideband radio access system according to one embodiment of the present invention comprises: receiving from a serving base station a handover command message that contains first timing information indicative of a time for transmitting a first uplink resource allocation information to transmit a handover instruction message; receiving the first uplink allocation information from the serving base station at the timing indicated by the first timing information; and transmitting the handover instruction message to the serving base station through an uplink resource indicated by the first uplink allocation information. | 12-22-2011 |
20110312338 | METHOD OF LOCATION UPDATE IN A WIRELESS COMMUNICATION SYSTEM - A location update method in a wireless communication system is disclosed. The method for performing a location update in a mobile station (MS) of the wireless communication system including a femtocell includes receiving a deregistration command (DREG-CMD) message that includes not only a paging group identifier (ID) of a first femtocell base station (BS) in which the MS stays but also a paging group ID of a macro BS including the first femtocell BS, initiating a location update delay timer while the MS moves from the first femtocell area to a second femtocell area having a paging group ID different from that of the first femtocell, and performing location update according to an operation of the location update delay timer. | 12-22-2011 |
20110317626 | BANDWIDTH REQUEST PREAMBLE SEQUENCE SELECTION METHOD AND RANDOM ACCESS METHOD - The present invention relates to a bandwidth request preamble sequence selecting method for bandwidth requests on a wireless access system, and to a random access procedure using the same. Also, the present invention relates to devices supporting the random access procedure. In one example of the present invention, the method for randomly accessing a wireless access system may comprise the steps of: receiving a first message containing a predefined bandwidth request index from a base station; selecting a bandwidth request preamble sequence from the predefined bandwidth request index on the basis if the properties of uplink data to be transmitted by a mobile terminal; transmitting a second message containing a predefined bandwidth request index to the base station; and transmitting the selected bandwidth request preamble sequence to the base station. | 12-29-2011 |
20110317665 | METHOD FOR UPDATING SYSTEM INFORMATION DURING HAND-OVER IN BROADBAND WIRELESS ACCESS SYSTEM - The present invention relates to a broadband wireless access system, and more particularly, to a method for efficiently acquiring system information on a target base station during a hand-over, and to an apparatus for carrying out the method. One method for enabling a mobile station to update system information on a target base station during a hand-over, according to one embodiment of the present invention, comprises the steps of: receiving, from a serving base station, a broadcast message containing system information on at least one neighbor base station including the target base station, and containing first change count information for indicating whether or not to update the system information; and receiving, from the serving base station, second change count information for indicating whether or not to update the system information currently possessed by the serving base station. | 12-29-2011 |
20120002628 | TECHNIQUE FOR EFFICIENTLY ALLOCATING RESOURCES IN VOIP COMMUNICATION - Disclosed is a method for performing efficient scheduling for VoIP communication, and performing VoIP communication according to the schedule. A bandwidth size and a transmission interval for the transmission of a VoIP packet to be used during a talk spurt are set, and a bandwidth size to be used for the transmission of an SID packet during a silence period is set in VoIP communication. The bandwidth size to be used during the silence period can be set to the bandwidth required for the transmission of an SID packet. To divide the talk spurt and the silence period, a user equipment uses two types of CQICH code words, so that a base station therefore performs scheduling in an efficient manner. | 01-05-2012 |
20120008596 | METHOD AND APPARATUS FOR HANDOVER IN A MOBILE COMMUNICATION SYSTEM - The present invention relates to a handover method for a mobile communication system. The handover method according to the present invention comprises the steps of: receiving from a serving base station a handover command message, the handover command message containing target base station information, information on an available interval enabling data transmission/reception to/from the serving base station during handover, information on an unavailable interval not enabling data transmission/reception during handover, and information on the time of disconnection of a link connected to the serving base station; performing a network entry process with the target base station; transmitting status information to the serving base station when an error has occurred in the network entry process; receiving from the serving base station a status information response message containing available interval and unavailable interval reset information and link disconnection time reset information for extending the link disconnection time; enabling the serving base station to provide a data transmitting/receiving service during the available interval; and re-performing the network entry process with the target base station, and disconnecting the link to the serving base station at the reset link disconnection time. | 01-12-2012 |
20120014287 | METHOD FOR TRANSMITTING AND RECEIVING GROUP DELETION INFORMATION - A method for transmitting and receiving group configuration information on a user equipment is disclosed. The user equipment receives information on group deletion of the user equipment from a base station. The user equipment transmits an acknowledgement (ACK) signal about the received information on the group deletion to the base station. In this case, the information on the group deletion is configured as a separate extended header type or a type that an extended header is piggybacked on a specific downlink packet to be transmitted to the user equipment. Preferably, the user equipment decodes the received information on the group deletion of the user equipment. The user equipment successfully decodes the information on the group deletion and is then able to transmit the acknowledgement (ACK) signal about the received information on the group deletion to the base station. | 01-19-2012 |
20120014296 | METHOD FOR TRANSMITTING AND RECEIVING DATA IN WIRELESS COMMUNICATION SYSTEM - The present invention relates to a method for transmitting and receiving data in a wireless communication system. The method of transmitting data in a wireless communication system according to an embodiment of the present invention supports time division duplex (TDD), and a base station transmits data to a terminal through a first sub-frame of a first frame and receives a confirmatory response to the data through a second sub-frame of a second frame. The second frame is determined according to hybrid automatic retransmit request (HARQ) processing latency which is the minimal required time from the reception of the data to the transmission of the confirmatory response by the first frame and the terminal. The second sub-frame is determined according to both the first sub-frame and the numbers of the downlink and uplink sub-frames of the first frame, wherein the downlink and uplink sub-frames are respectively used in the HARQ operation. | 01-19-2012 |
20120014355 | METHOD OF RELIABLE HANDOVER SIGNALING PROCEDURE IN A BROADBAND WIRELESS ACCESS SYSTEM - A method for determining whether a mobile station (MS) is present in coverage of a serving base station (SBS) during a handover process and an apparatus for carrying out the same, resulting in the implementation of more reliable handover, are disclosed. A method for controlling an MS to perform a presence check procedure during handover of a broadband wireless access system includes receiving a first signal for a presence check request from an SBS, and transmitting a second signal as a response to the presence check request to the SBS. Preferably, the first signal is received after the lapse of a first time indicating a deadline at which the MS performs network re-entry to a target base station (TBS). | 01-19-2012 |
20120014366 | METHOD FOR TRANSMITTING MEDIA ACCESS CONTROL PROTOCOL DATA UNIT - A method for transmitting a relatively large amount of data and an apparatus supporting the same are proposed. The data transmission method includes constructing a MAC PDU including an Advanced Generic MAC Header (AGMH) with a first length field, a MAC PDU Length Extended Header (MLEH) with a second length field, and payload, and transmitting the MAC PDU to a receiver. The first length field and the second length field are used for calculating a total length of the MAC PDU. | 01-19-2012 |
20120020329 | METHOD FOR ACQUIRING INFORMATION FOR MEDIA INDEPENDENT HANDOVER - This document is related to a method for acquiring information for media independent handover. More specifically the method comprises: submitting a media independent handover (MIH) query to a base station (BS) by sending a first request message, and receiving a response to the MIH query. Because the first request message is used for authorization, preferably the PKM message, the MS can acquire information for handover between heterogeneous networks before the MS finishes the network entry. | 01-26-2012 |
20120034918 | METHOD AND APPARATUS FOR PERFORMING IDLE-MODE OPERATION USING MOBILITY INFORMATION - A method and apparatus for performing a location update based on mobility information indicating a velocity of a Mobile Station (MS), and a method and apparatus for using a timer for a location update in a wireless access system are disclosed. The MS transmits a deregistration request message requesting initiation of idle mode to a first Base Station (BS), receives a deregistration command message including paging group information from the first BS, the paging group information including a primary paging group Identifier (ID) and primary paging offset of a primary paging group allocated to the MS, and a secondary paging group ID and secondary paging offset of a secondary paging group allocated to the MS, and activates a paging group location update timer after moving from the primary paging group to the secondary paging group. The deregistration request message includes first mobility information indicating a velocity of the MS and the paging group information is set based on the first mobility information. | 02-09-2012 |
20120039289 | GROUP RESOURCE ALLOCATION METHOD IN BROADBAND WIRELESS ACCESS SYSTEM AND APPARATUS THEREFOR - The present invention relates to a broadband wireless access system, and more specifically, to a reliable group resource allocation method and an apparatus therefor. A group resource allocation operating method of a terminal in a broadband wireless access system according to one aspect of the present invention comprises the steps of: receiving a message which includes group setup information from a base station; determining a channel identifier of a 1 | 02-16-2012 |
20120044909 | EFFICIENT HANDOVER METHOD IN BROADBAND WIRELESS ACCESS SYSTEM - The present invention relates to a broadband wireless access system, and more particularly, to a handover method that can reduce a stop time in an entry before a break-type handover for performing more efficient handover, and to apparatus for performing same. A handover method for a terminal in a broadband wireless access system according to one embodiment of the present invention may include: receiving, from a serving base station, a handover command message including the information of a section in which scheduling for the terminal is not performed; transmitting a ranging code to a target base station during the section; and receiving information indicating the transmitted result of the ranging code from the serving base station. | 02-23-2012 |
20120064854 | METHOD FOR REQUESTING EMERGENCY SERVICE AT MOBILE STATION IN A WIRELESS COMMUNICATION SYSTEM - A method for requesting an emergency service to a base station and a mobile station using the same are disclosed. During initial network entry, a mobile station may transmit an emergency message to a base station using an emergency Flow Identifier (FID), and receive from the base station information about resources allocated according to a default service flow parameter predefined for the emergency service by the base station. The mobile station may transmit to the base station a ranging request message including an emergency service indicator indicating an emergency service request, and receive from the base station a ranging response message including an emergency FID allocated by the BS as a response to the emergency service request. The emergency FID is the emergency FID received in the ranging response message. If the default service flow parameter is not predefined for the emergency service, the mobile station may establish an emergency service flow by a Dynamic Service Addition (DSA) transaction with the base station. | 03-15-2012 |
20120077486 | METHOD OF LOW DUTY MODE OPERATION IN A FEMTO BASE STATION IN CONSIDERATION OF A FEMTO CELL TYPE - The present invention relates to a broadband wireless access system including a femto cell, and more particularly, to a method of low duty operation in a femto base station. According to one embodiment of the present invention, in a broadband wireless access system, a method of a low duty mode operation of a femto base station saving power includes the steps of determining a low duty mode pattern to be performed by the femto base station according to a preset reference and performing the low duty mode operation according to the determined pattern. In this case, the preset reference can include at least one selected from the group consisting of a battery level, an available resource status and a subscriber type of the femto base station. | 03-29-2012 |
20120094664 | METHOD OF SCANNING NEIGHBOR BASE STATION IN A BROADBAND WIRELESS ACCESS SYSTEM - The present invention relates to a broadband wireless access system, and more particularly, to a method for a mobile station to efficiently scan a neighbor base station and apparatus therefor. According to one embodiment of the present invention, in a broadband wireless access system, a method of performing a scan, which is performed by a mobile station to scan a neighbor base station, includes the steps of receiving a scan response (AAI_SCN-RSP) message including a first interval information indicating an interval for the mobile station to receive a preamble of the neighbor base station from a serving base station and receiving the preamble from the neighbor base station in the first interval. Preferably, the first interval is set by a subframe unit. | 04-19-2012 |
20120104499 | SEMICONDUCTOR DEVICE FOR PREVENTING PLASMA INDUCED DAMAGE - A semiconductor device including a well, at least a first transistor region formed over the well, a gate electrode formed over the transistor region, a well guard disposed to include an open region while surrounding the transistor region, a diode disposed in the open region, and a metal line configured to electrically connect the gate electrode and the diode. | 05-03-2012 |
20120106515 | RANGING OF TERMINAL IN LEGACY SUPPORT MODE - The present invention relates to a broadband wireless access system, and more particularly, a ranging technique of a terminal using a legacy support frame in a mobile communication system including a legacy system and an advanced system. According to one form of an embodiment of the present invention, the ranging method of the terminal for a base station in the mobile communication system having the legacy system and the advanced system comprises the steps of: receiving secondary super frame header (S-SFH) information from the base station; determining whether a frame composition used in the mobile communication system supports the legacy system; acquiring ranging channel information for initial ranging, handover ranging, and periodical ranging from the S-SFH; and performing one or more ranging processes of the initial ranging, the handover ranging, and the periodical ranging in the base station by using the ranging channel information. | 05-03-2012 |
20120115482 | METHOD IN WHICH A MOBILE STATION RECEIVES INFORMATION ON A PERIPHERAL LEGACY BASE STATION IN A LEGACY SUPPORT MODE - The present invention relates to a broadband wireless access system, and more particularly, to a method and an apparatus for acquiring system information in a mobile communication system in which a legacy system and an advanced system coexist. A method of receiving system information on a peripheral base station in a mobile communication system includes receiving a second message containing time information for receiving, through a second region of a serving base station, a first message broadcasted through a first region of the serving base station and receiving the first message through the first region of the serving base station using the time information, the first message containing system information on neighbor legacy base stations and/or on the first region of neighbor advanced base stations which operate in a mixed mode. | 05-10-2012 |
20120140733 | METHOD AND APPARATUS FOR HANDOVER BY CHANGING ZONES IN A WIRELESS COMMUNICATION SYSTEM - A method for a terminal to perform a handover including transmitting a ranging request message, containing a field requesting a zone change from a first type of terminal support zone to a second type of terminal support zone of the second type of target base station, to the second type of target base station via the first type of terminal support zone; receiving a ranging response message, containing a field indicating the omission of a capability negotiation message in the event of network reentry, from the second type of target base station via the first type of terminal support zone; and transmitting a second type of capability request message to the second type of target base station via the second type of terminal support zone. | 06-07-2012 |