Patent application number | Description | Published |
20080242340 | Method for supporting fast base station switching in a wireless communication system using multiple frequency bands - A method for performing fast base station switching in an mobile station capable of using multiple frequency assignments in a wireless communication system are provided, in which initial network entry to a base station managing at least two frequency assignments is performed in one of the at least two frequency assignments, overlay mode support information and FA information about the at least two frequency assignments are acquired by the initial network entry, the overlay mode support information indicating whether the base station supports multiple frequency assignments, the base station is notified that the mobile station will operate in an overlay mode using multiple frequency assignments based on the acquired information, and signals are transmitted and received to and from the base station in the at least two frequency assignments. | 10-02-2008 |
20090011784 | APPARATUS AND METHOD FOR PROCESSING TRANSMISSION INFORMATION OF BROADCAST MESSAGE CONSTITUTED BY RELAY STATION (RS) IN MULTIHOP RELAY BROADBAND WIRELESS ACCESS (BWA) COMMUNICATION SYSTEM - An apparatus and a method for processing transmission information of a broadcast message constituted by a Relay Station (RS) in a multihop relay Broadband Wireless Access (BWA) communication system are provided. A communication method of the RS includes composing a message to be sent to a Mobile Station (MS); transmitting a scheduling request message which includes information required to schedule the composed message, to a Base Station (BS); and receiving an allocation message which includes information to transmit the composed message, from the BS in response to the scheduling request message. | 01-08-2009 |
20090043895 | METHOD AND APPARATUS FOR ALLOCATING RESOURCES IN A WIRELESS COMMUNICATION SYSTEM AND SYSTEM THEREOF - A method is provided for allocating resources by a Base Station (BS) in a wireless communication system. The method includes persistently allocating one or more resource slots among a plurality of resource slots, the persistently allocated one or more resource slots being allocated to corresponding one or more Mobile Stations (MSs), de-allocating at least one persistently allocated resource slot of the one or more persistently allocated resource slots, determining whether a hole is created due to the de-allocation among the one or more persistently allocated resource slots not de-allocated, and shifting a location of at least one of the one or more non-de-allocated persistently allocated resource slots when it is determined that the hole is created due to the de-allocation. | 02-12-2009 |
20090069024 | Method for Requesting Bandwidth Allocation and Detecting Service Flow in Communication System - A method for requesting bandwidth allocation by a mobile station in a communication system is provided. The mobile station detects at least one Connection IDentifier (CID), bandwidth allocation for which is to be requested, generates a bandwidth request header when the number of the at least one detected CID equals one, and transmits the bandwidth request header to a base station, wherein the bandwidth request header includes a region for indicating a first CID representing basic information for identification of the mobile station, a region for indicating a ranking of the detected CID, and a region for indicating information about bandwidth requested for the detected CID. | 03-12-2009 |
20090103487 | METHOD AND APPARATUS FOR ALLOCATING RESOURCES IN A WIRELESS COMMUNICATION SYSTEM - A method for allocating resources by a Base Station (BS) in a wireless communication system is provided. The method includes determining use/nonuse of each of a plurality of Resource Blocks (RBs), which are allocated using a persistent allocation scheme, and transmitting resource allocation information indicating use/nonuse of each of the plurality of RBs to a plurality of Mobile Stations (MSs) according to a result of the determination. | 04-23-2009 |
20090135805 | System and method for connection identifier synchronization in a communication system - A method is provided for synchronizing Connection IDentifiers (CIDs) of a first station and a second station in a communication system. The CID synchronization method includes sending, by the first station, a first message for requesting addition of a service flow identified by a CID to the second station; sending, by the second station, a second message which is a response message to the first message, and at the same time, setting a number of a frame where the second message is transmitted as a first start frame number; sending, by the first station, a third message for acknowledging receipt of the second message to the second station, and at the same time, setting a number of a frame where the third message is transmitted as a second start frame number; performing, by each of the first station and the second station, a modulo operation on a frame having the first or second start frame number and its succeeding frames using a positive integer for each frame, and detecting a number of a frame where a result value of the modulo operation becomes zero (0); and simultaneously updating CID lists of the first station and the second station at a frame having the detected frame number with regard to a CID of the added service flow. | 05-28-2009 |
20090137260 | SYSTEM AND METHOD FOR TRANSMITTING AND RECEIVING RANGING INFORMATION IN SLEEP MODE IN A COMMUNICATION SYSTEM - A Base Station (BS) for transmitting a ranging response message to a Mobile Station (MS) in a communication system is provided. The ranging response message comprises a Unified Type-Length-Value (TLV) encoding for a power saving class parameter. The Unified TLV encoding comprises only a value parameter for each of a plurality of Information Elements (IEs) used for defining a power saving class. | 05-28-2009 |
20090186594 | SYSTEM AND METHOD FOR PROVIDING AN EMERGENCY SERVICE IN A COMMUNICATION SYSTEM - A system and method for providing an emergency service in a communication system are provided. The method includes transmitting a request message for requesting connection setup for service provision from a first station to a second station, the request message including a first indicator indicating an emergency service; receiving a response message in response to the request message by the first station from the second station, the response message including service flow connection information for provision of the emergency service and a second indicator indicating that it is a response to the request message, acquiring the service flow connection information from the response message and transmitting a message acknowledging acquisition of the service flow connection information to the second station, and setting a connection for providing the emergency service. | 07-23-2009 |
20090186595 | SYSTEM AND METHOD FOR PROVIDING AN EMERGENCY SERVICE IN A COMMUNICATION SYSTEM - A system and method for providing an emergency service in a communication system is provided. A method for providing an emergency service by an idle mode Mobile Station (MS) in a communication system includes receiving, from a Base Station (BS), a broadcast message including information on a time duration in which an emergency service message will be transmitted after waking up at a start timing point of a paging listening interval, transitioning into an idle state when a start timing point of the time duration in which the emergency service message will be transmitted is later than a timing point at which the paging listening interval is terminated, and waking up at the start timing point of the time duration in which the emergency service message will be transmitted after transitioning into the idle state. | 07-23-2009 |
20090190568 | APPARATUS AND METHOD FOR RESUMPTION REQUEST OF EXTENDED REAL TIME POLLING SERVICE IN A BROADBAND WIRELESS COMMUNICATION SYSTEM - A method of operating a Base Station (BS) in a broadband wireless communication system to resume an extended real-time Polling Service (ertPS) is provided. The method of operating the BS includes detecting a codeword received through a Channel Quality Indicator (CQI) channel, and upon receiving a CQI CHannel (CQICH) codeword for requesting resumption of an extended real-time Polling Service (ertPS) connection from a Mobile Station (MS), allocating to the MS an uplink resource corresponding to the largest maximum sustainable traffic rate of at least one ertPS connection established to the MS. | 07-30-2009 |
20090221290 | System and method for transmitting and receiving a signal using multiple frequency bands in a wireless communication system - Disclosed is a system and a method of signal transmission/reception by a mobile station in a wireless communication system. The method includes: transmitting a first sub-band preparation indicator, which indicates that the mobile station has been prepared for transmission/reception of a signal through a first sub-band, to a base station through a primary band; transmitting a first sub-band failure indicator to the base station through the primary band upon detecting failure in transmitting the first sub-band preparation indicator; receiving sub-band information on a second sub-band, which is different from the first sub-band, from the BS through the primary band; and acquiring synchronization with the second sub-band, so as to enable transmission/reception of a signal through the second sub-band based on the sub-band information. | 09-03-2009 |
20090268700 | APPARATUSES AND METHODS FOR PROVIDING EMERGENCY SERVICE IN A WIRELESS COMMUNICATION SYSTEM - Apparatuses and methods for providing an emergency service in a wireless communication system are provided. The method includes allocating a Connection IDentifier (CID) used to transmit the emergency service message, determining a Convergence Sublayer (CS) type for processing the emergency service message, generating a Downlink Channel Descriptor (DCD) message which comprises at least one of the allocated CID and information relating to the determined CS type, and transmitting the generated DCD message to a Mobile Station (MS). | 10-29-2009 |
20090303953 | METHOD AND APPARATUS FOR SUPPORTING IDLE MODE OF MOBILE STATION IN WIRELESS COMMUNICATION SYSTEM - A method and apparatus for supporting an idle mode of a Mobile Station (MS) in a superframe-based wireless communication system are provided. In a method for operating an MS to support an idle mode in a superframe-based wireless communication system, a paging listening interval is determined based on a Broadcast CHannel (BCH) information Transmit (TX) interval. BCH information including paging information is received during the paging listening interval. The inclusion/non-inclusion of a paging advertisement (MOB_PAG-ADV) message is detected based on the BCH information. | 12-10-2009 |
20100014462 | METHOD AND APPARATUS FOR RECOGNIZING MULTICAST AND BROADCAST SERVICE REGION IN BROADBAND WIRELESS COMMUNICATION SYSTEM - A method and an apparatus for recognizing a Multicast and Broadcast Service (MBS) region in a broadband wireless communication system are provided. In the method, whether a next MBS MAP message transmission point of a first frame and an MBS data burst transmission point indicated by MBS burst assignment information of a second frame match with each other in a third frame is determined. When matching with each other in the third frame, a control message including information for determining a starting point of an MBS region is generated. The generated control message is transmitted during one of the first and second frames. | 01-21-2010 |
20100220641 | METHOD FOR OPERATING CONTROL SLEEP MODE IN A COMMUNICATION SYSTEM - A method for controlling a sleep mode operation by a Mobile Station (MS) in a communication system. The MS includes transitioning to an awake state in a listening interval of the sleep mode; performing any one of a first operation, a second operation and a third operation in the awake state; and after any one operation is performed, transitioning to a sleep state upon detecting that there is no data to transmit to the BS and there is no data to be received from the BS. The first operation is a process of receiving data from the BS, the second operation is a process of transmitting data to the BS, and the third operation is a process of receiving data from the BS and receiving data from the BS. | 09-02-2010 |
20100232331 | METHOD AND APPARATUS FOR CONTROLLING SLEEP MODE OPERATION IN A COMMUNICATION SYSTEM - A method and apparatus for controlling a sleep mode operation of a Mobile Station (MS) in a communication system, in which the sleep mode operates according to a sleep cycle including a listening window corresponding to an awake mode and a sleep window corresponding to a sleep state. The method includes starting a preset timer if there is a transmission of data between the MS and a Base Station (BS) during the listening window, restarting the timer upon receiving at least one of UpLink (UL) data, DownLink (DL) data and MAP Information Element (IE) indicating resource allocation from the BS during the listening window, maintaining the listening window until the timer expires, and transitioning to the sleep window if the timer expires. | 09-16-2010 |
20100254293 | APPARATUS AND METHOD FOR CONTROLLING SLEEP CYCLE SYNCHRONIZATION OF SLEEP MODE IN WIRELESS COMMUNICATION SYSTEM - An apparatus and method for controlling sleep cycle synchronization of a sleep mode in a wireless communication system are provided. A method of operating a Mobile Station (MS) in a sleep mode state includes, if a traffic indication message and unicast data are not received during a listening window, transmitting one of a request message and a header to a Base Station (BS) to request a location of a next-scheduled listening window, and if a response for the one of the request message and the header is received, performing synchronization for a next sleep cycle. | 10-07-2010 |
20100316007 | APPARATUS AND METHOD FOR SUPPORTING SIMULTANEOUS TRANSMISSION OF PLURAL BROADCAST MANAGEMENT MESSAGES IN A WIRELESS COMMUNICATION SYSTEM - An apparatus and method for supporting simultaneous transmission of a plurality of broadcast management messages in a wireless communication system are provided. A method in a Base Station (BS) for supporting transmission of a broadcast management message in a wireless communication system includes generating one or more broadcast management messages whose transmission is required, and constructing an Advanced-MAP Information Element (A-MAP IE) of a number, which is predefined on the basis of a predefined position within a subframe, as a Broadcast A-MAP IE. Here, the Broadcast A-MAP IE comprises allocation information of a broadcast burst for transmission of the generated one or more broadcast management messages. | 12-16-2010 |
20100329201 | METHOD AND APPARATUS FOR TRANSMITTING PAGING CONTROL INFORMATION IN A WIRELESS COMMUNICATION SYSTEM - A method and apparatus for transmitting paging control information in a wireless communication system are provided. A method of operating a Base Station (BS) for paging in a superframe-based wireless communication system includes determining a paging listening interval, determining an interval of at least one or more subframes before the paging listening interval, as a paging control listening interval, and, during the paging control listening interval, broadcasting a paging control message. | 12-30-2010 |
20110007683 | APPARATUS AND METHOD FOR SUPPORTING MULTICAST COMMUNICATION IN BROADBAND WIRELESS ACCESS SYSTEM - An apparatus and a method for supporting multicast communication in a broadband wireless access system are provided. A method of a Mobile Station (MS) for supporting multicast communication in a wireless access system includes acquiring decoding parameters by receiving an Advanced Air Interface Enhanced-Multicast and Broadcast Service configuration (AAI-E-MBS_CFG) message from a Base Station (BS), establishing an E-MBS service flow by sending and receiving AAI Dynamic Service Addition-request/response (AAI_DSA-REQ/RSP) messages to and from the BS, and decoding E-MBS MAP received from the BS through the established E-MBS service flow using the acquired decoding parameters. The E-MBS MAP includes information for decoding multicast bursts. | 01-13-2011 |
20110103281 | APPARATUS AND METHOD FOR NEGOTIATING SLEEP CYCLE SETTING BETWEEN BASE STATION AND MOBILE STATION IN WIRELESS COMMUNICATION SYSTEM - An apparatus and method for negotiating sleep cycle setting between a base station and a mobile station in a wireless communication system are provided. A method for operating a transmitter to negotiate sleep cycle setting of a mobile station in a wireless communication system includes transmitting a DSx request message including sleep cycle setting information to a receiver, and receiving a DSx response message, which includes at least one of acceptance/refusal information about DSx and acceptance/refusal information about sleep cycle setting change, from the receiver. Herein, the DSx is one of a Dynamic Service Addition (DSA), a Dynamic Service Change (DSC), and a Dynamic Service Deletion (DSD). | 05-05-2011 |
20110103329 | METHOD AND APPARATUS OF REQUIRING UPLINK RESOURCES FOR TRANSMITTING RANGING REQUEST MESSAGE IN COMMUNICATION SYSTEM - A method and an apparatus of requiring uplink resources for transmitting a ranging request message in a communication system are provided. The method includes allocating an uplink bandwidth from a base station, and fragmentizing a Ranging Request (RNG-REQ) message into plural fragmented RNG-REQ messages, when the allocated bandwidth does not accommodate an entire RNG-REQ message, requesting an additional uplink bandwidth by transmitting one fragmented RNG-REQ message, and allocating an requested additional uplink bandwidth from the base station and transmitting a next one fragmented RNG-REQ message. | 05-05-2011 |
20110159906 | METHOD AND APPARATUS FOR NETWORK REENTRY OF MOBILE STATION IN WIRELESS COMMUNICATION SYSTEM - A method and apparatus for network reentry of a Mobile Station (MS) in a wireless communication system are provided. The method includes receiving allocation of a context search identifier from a network while a network entry procedure is performed, and transmitting a ranging request message including the allocated context search identifier to a Base Station (BS) when a network reentry event occurs. | 06-30-2011 |
20110286409 | APPARATUS AND METHOD FOR PROVIDING HARQ FOR RANGING IN A WIRELESS COMMUNICATION SYSTEM - An apparatus and method for providing selective Hybrid Automatic Repeat reQuest (HARQ) for a ranging service in a wireless communication system are provided. A HARQ method includes transmitting, to at least one Mobile Station (MS), ranging code division information, and if a ranging code is received from the MS, allocating the MS a resource considering the ranging code, and if a ranging signal is not received through the resource allocated to the MS, making a request for retransmission of the ranging signal to the MS. | 11-24-2011 |
20110292892 | APPARATUS AND METHOD FOR RANGING FOR UPLINK RESOURCE ALLOCATION IN BROADBAND WIRELESS COMMUNICATION SYSTEM - An apparatus and method for ranging for uplink resource allocation in a broadband wireless communication system are provided. The method includes detecting, from an Uplink Channel Descriptor (UCD), first ranging codes corresponding to a first region and second ranging codes corresponding to a second region, selecting one of the second ranging codes corresponding to the second region, mapping the selected second ranging code to the first region and transmitting the same to a base station, and receiving an allocation of an uplink resource from the base station. | 12-01-2011 |
20110305214 | APPARATUS AND METHOD FOR CAPABILITY NEGOTIATION FOR HYBRID AUTOMATIC REPEAT REQUEST PARAMETER IN BROADBAND WIRELESS COMMUNICATION SYSTEM - A technique for supporting newly defined Hybrid Automatic Repeat reQuest (HARQ) categories without an occurrence of an interpretation error when using a legacy Mobile Station (MS) and a legacy Base Station (BS) in a broadband wireless communication system is provided. A method of transmitting a capability negotiation message includes determining an HARQ parameter set to be allocated, setting a value of a second field for informing whether to indicate an HARQ parameter set which corresponds to an index greater than a maximum value that can be indicated by using a first field for indicating an index of the HARQ parameter set, and transmitting the capability negotiation message including the second field. | 12-15-2011 |
20120002583 | METHOD AND APPARATUS FOR GENERATING GROUP SERVICE FLOW IN A MOBILE COMMUNICATION SYSTEM - A method and apparatus generate a group service flow in a mobile communication system. An Advanced Mobile Station (AMS) in a mobile communication system transmits an AAI_REG-REQ message, which includes a group service request indicator indicating that it is required to generate the group service flow, to an ABS. The AMS receives an AAI REG-RSP message and an AAI_DSA-REQ message, which includes at least one of a group service flow parameter for the group service flow, a multicasting Station Identifier (STID), a multicasting flow ID, a group service flow ID, and information indicating a use of the group service flow, from the ABS. The AMS then generates the group service flow in cooperation with the ABS in accordance with the AAI_DSA-REQ message. | 01-05-2012 |
20120002604 | SYSTEM AND METHOD FOR SWITCHING MOBILE STATION IDENTIFICATION IN WIRELESS COMMUNICATION SYSTEM - A system and a method for switching mobile station identification information in a wireless communication system are provided. A method for transmitting mobile station identification information includes, when a base station receives a RaNGing (RNG)-REQuest (REQ) message from the mobile station, sending, at a base station, a RNG-ReSPonse (RSP) message including a temporary mobile station identifier to the mobile station, determining, at the mobile station, the temporary mobile station identifier in the RNG-RSP signal, when base station receives REGistration (REG)-REQ message including the temporary mobile station identifier from the mobile station, sending, at the base station, a REG-RSP message comprising a mobile station identifier of the mobile station to the mobile station, determining, at the mobile station, the mobile station identifier in the REG-RSP message and sending a response signal for the REG-RSP message to the base station, when receiving the response signal for the REG-RSP message, deleting, at the base station, the temporary mobile station identifier of the mobile station, and communicating, at the mobile station and the base station, using the mobile station identifier. | 01-05-2012 |
20120093052 | METHOD AND APPARATUS FOR REDUCING ACCESS OVERHEAD FROM PAGED DEVICE IN MACHINE TO MACHINE COMMUNICATION SYSTEM - An apparatus for an idle mode terminal is configured to perform a method for operating the idle mode terminal in a Machine to Machine (M2M) communication system. A paging message is received from the base station during a paging listening interval. The Apparatus determines whether an indicator indicating receipt of multicast group data is included in the paging message. When the indicator indicating the receiving of multicast group data is included, data transmitted via a downlink resource that uses an identifier mask of a multicast group to which a terminal belongs is received. Thereafter, a paging non-listening interval is entered. | 04-19-2012 |
20120100881 | APPARATUS AND METHOD FOR CONTROLLING SLEEP CYCLE SYNCHRONIZATION FOR EMERGENCY ALERT SERVICE IN WIRELESS COMMUNICATION SYSTEM - A method operates a Mobile Station (MS) in a sleep mode state in a wireless communication system. The method includes transmitting a request message to a Base Station (BS) to inquire a location of a next scheduled listening window responsive to failing to receive a traffic indication message and unicast data during a listening window, receiving a response message unicast in response to the request message, performing sleep cycle synchronization by using synchronization information included in the response message, and determining whether an emergency alert service-related message is transmitted by using emergency alert service-related information included in the response message. | 04-26-2012 |
20120178489 | APPARATUS AND METHOD FOR SUPPORTING TIME-CONTROLLED SERVICE IN MACHINE-TO-MACHINE COMMUNICATION SYSTEM - An apparatus and method for supporting a time-controlled service in an M2M communication system is provided. The method includes registering the time-controlled M2M service; establishing a service flow with a Base Station (BS) after registering the time-controlled M2M service; exchanging data with the BS through the established service flow during an access admission time period; and stopping data transmission during an access restriction time period when an access interruption message is received for the established service flow. | 07-12-2012 |
20120218929 | APPARATUS AND METHOD FOR OPERATING CHANNEL QUALITY INDICATOR CHANNEL ON SLEEP MODE IN BROADBAND WIRELESS COMMUNICATION SYSTEM - A Channel Quality Indicator (CQI) channel management in a broadband wireless communication system is provided. Operations of a base station include determining a CQI channel operation mode for a CQI channel of a terminal which enters a sleep mode; transmitting at least one message which instructs to enter the sleep mode and includes information indicating the CQI channel operation mode; and managing the CQI channel of the terminal according to the CQI channel operation mode while the terminal operates in the sleep mode. Candidates of the CQI channel operation mode include at least one of a first mode which deallocates the CQI channel in the sleep mode entry, a second mode which maintains the CQI channel in the sleep mode and forbids CQI channel allocation to other terminal during a sleep window, a third mode which deallocates the CQI channel in the sleep window entry without signaling, and a fourth mode which maintains the CQI channel in the sleep mode and allows the CQI channel allocation to other terminal during the sleep window. | 08-30-2012 |
20120225650 | METHOD AND APPARATUS FOR CONTROLLING RELAY STATION MODE OF MOBILE STATION IN A COMMUNICATION SYSTEM - A method and an apparatus for a Mobile Station (MS) to control a Relay Station (RS) mode of the MS in a communication system are provided. The method includes sensing a link loss with a serving Base Station (BS), searching for a neighbor BS for network reentry, transmitting to the neighbor BS an Identifier (ID) of the serving BS and an indication indicating network reentry from coverage loss caused by movement out of a service area of the serving BS are, and operating in the RS mode, upon receipt of an indication commanding switch to the RS mode from the neighbor BS, wherein the RS mode is a mode in which the MS operates as an RS. | 09-06-2012 |
20120225655 | APPARATUS AND METHOD FOR CONTROLLING RELAY MODE OF BASE STATION IN COMMUNICATION SYSTEM - An apparatus and a method for providing a relay service in a Base Station (BS) of a communication system are provided. The method includes detecting a communication state with a backhaul of the communication system, transmitting backhaul error occurrence information to at least one Mobile Station (MS) located in a service coverage area when communication with the backhaul is interrupted, selecting a neighbor BS from among one or more neighbor BSs as a target BS, and providing a relay service by connecting with the target BS. | 09-06-2012 |
20120281627 | METHOD AND APPARATUS FOR PROVIDING VOICE OVER INTERNET PROTOCOL SERVICE IN MOBILE COMMUNICATION SYSTEM - A method and apparatus for providing a Voice over Internet Protocol (VoIP) service using a Payload Header Suppression (PHS) method in a mobile communication system are provided. The method includes extracting header information by analyzing a Session Description Protocol (SDP) offer message that is included in a Session Initiation Protocol (SIP) signaling message received from a Worldwide Interoperability for Microwave Access (WiMAX) system, generating a Classification (CS) rule based on the extracted header information, determining whether to generate a new service flow based on the extracted header information, generating a PHS rule using a Dynamic Service Addition (DSA) when the new service flow is generated, and generating the PHS rule using a Dynamic Service Change (DSC) when the new service flow is not generated, and transmitting the generated CS rule and PHS rule to the WiMAX system. | 11-08-2012 |
20120327900 | APPARATUS AND METHOD FOR PROVIDING PREAMBLE INFORMATION IN WIRELESS COMMUNICATION SYSTEM - A method and an apparatus for providing preamble information in a wireless communication system are provided. The method of a Base Station (BS) of a first system for providing neighbor BS information of a second system in a communication environment covering the first system and the second system together includes generating a message comprising information indicating a superframe boundary of a neighbor BS of the second system, and transmitting the message comprising the information indicating the superframe boundary to a Mobile Station (MS). | 12-27-2012 |
20130143583 | APPARATUS AND METHOD FOR PERFORMING SAFE COMMUNICATION IN WIRELESS COMMUNICATION SYSTEM - A base station, a wireless terminal and a communication method of a wireless communication system are provided. The base station includes a receiver for receiving a signal from a wireless terminal or another base station, a transmitter for transmitting a signal to the wireless terminal or the another base station, and a controller for generating resource scheduling or control information for communication of the wireless terminal in a cell including at least two base stations included in a moving path of the wireless terminal and for transmitting the generated resource scheduling or control information to the wireless terminal and at least one of the base stations included in the cell. | 06-06-2013 |
20130188575 | METHOD AND APPARATUS FOR PERFORMING HYBRID AUTOMATIC REPEAT REQUEST OPERATION IN A COMMUNICATION SYSTEM - A Hybrid Automatic Repeat reQuest (HARQ) method and an apparatus in a communication system are provided. The method includes receiving, by a Subscriber Station (SS), first data from at least one first member Base Station (BS) among member BSs of a cooperative cell, when the cooperative cell is configured with the member BSs to provide a communication service to the SS, generating a response signal indicating a reception result of the first data, and transmitting the response signal to at least one predefined second member BS from among the member BSs. The member BSs include a master BS for controlling communication of the member BSs and at least one slave BS for communicating with the SS under the control of the master BS. | 07-25-2013 |
20130201938 | METHOD AND APPARATUS FOR ALLOCATING UPLINK RESOURCES IN BEAMFORMING-BASED WIRELESS COMMUNICATION SYSTEM - A method and an apparatus for requesting Uplink (UL) resource allocation in a beamforming-based wireless communication system are provided. A Mobile Station (MS) acquires UL beam pair information indicating a best MS transmit beam and a best Base Station (BS) receive beam for UL transmission, determines a best BS transmit beam for Downlink (DL) reception, selects a Bandwidth Request (BR) code and a BR channel from available BR codes and a designated BR transmit resource, wherein at least one of the BR code and the BR channel is mapped to at least one of the best BS receive beam and the best BS transmit beam, and transmits the selected BR code to a BS over the selected BR channel. The BS allocates a UL resource for transmission of a BR message and UL data considering the best BS receive beam. | 08-08-2013 |
20130242907 | METHOD AND SYSTEM FOR HANDLING UPLINK RESOURCE REQUEST IN WIRELESS COMMUNICATION SYSTEM - A method for handling an UpLink (UL) resource request in a master Base Station (BS) exchanging data with a plurality of BSs in a communication system is provided. The method includes receiving UL resource request information from at least one slave BS in a cooperative cell, determining scheduled UL resource allocation information indicating information about resources for transmitting UL data, based on the UL resource request information, and delivering the scheduled UL resource allocation information to a Subscriber Station (SS) and the at least one slave BS. The UL resource request information may be generated depending on a UL resource request of the SS. | 09-19-2013 |
20130288683 | SYSTEM AND METHOD FOR TRANSMITTING AND RECEIVING A SIGNAL USING MULTIPLE FEQUENCY BANDS IN A WIRELESS COMMUNICATION SYSTEM - Disclosed is a system and a method of signal transmission/reception by a mobile station in a wireless communication system. The method includes: transmitting a first sub-band preparation indicator, which indicates that the mobile station has been prepared for transmission/reception of a signal through a first sub-band, to a base station through a primary band; transmitting a first sub-band failure indicator to the base station through the primary band upon detecting failure in transmitting the first sub-band preparation indicator; receiving sub-band information on a second sub-band, which is different from the first sub-band, from the BS through the primary band; and acquiring synchronization with the second sub-band, so as to enable transmission/reception of a signal through the second sub-band based on the sub-band information. | 10-31-2013 |
20130301567 | SCHEME FOR PERFORMING BEAMFORMING IN COMMUNICATION SYSTEM - A method of performing beamforming in a base station is provided. The method includes receiving random access channel signals transmitted in one or more transmit beams from a terminal, using one or more receive beams, determining at least one best transmit beam from the one or more transmit beams and at least one best receive beam from the one or more receive beams, and transmitting information about the best transmit beam and the best receive beam to the terminal. | 11-14-2013 |
20130322367 | APPARATUS AND METHOD FOR PERFORMING NETWORK ENTRY PROCEDURE IN CLOUD CELL COMMUNICATION SYSTEM - A method for performing a network entry procedure by a Mobile Station (MS) in a cloud cell communication system is provided. The method includes determining whether there is an arbitrary cloud cell member candidate Base Station (BS) as a cloud cell member candidate BS which has transmitted a downlink synchronization signal with a signal strength, if there is the arbitrary cloud cell member candidate BS, determining the arbitrary cloud cell member candidate BS as a final cloud cell member candidate BS which will perform a cooperative communication with the master BS, transmitting an access request message including information on the final cloud cell member candidate BS to the master BS, and receiving an access response message including information on a cloud cell member BS from the master BS. | 12-05-2013 |
20140023040 | APPARATUS AND METHOD FOR SCHEDULING DATA IN CLOUD CELL COMMUNICATION SYSTEM - A method for scheduling data by a new master Base Station (BS) in a cloud cell communication system is provided. The method includes detecting that a master BS for a specific Mobile Station (MS) is changed from an old master BS to a new master BS, before a tunnel which is established between the new master BS and an access gateway is activated, receiving MS data which the old master BS receives through the tunnel which is established between the old master BS and the access gateway and buffers from the old master BS, and scheduling the received MS data. | 01-23-2014 |
20140126473 | APPARATUS AND METHOD FOR ROUTING DATA IN MOBILE COMMUNICATION SYSTEM - A method for routing data by a Corresponding Mobility Agent (CMA) in a mobile communication system is provided. The method includes managing mobility for a Mobile Station (MS) with a Mobile Access Gateway (MAG), and routing a data packet between a Corresponding Node (CN) and the MS based on a location of the MS, wherein the CMA is mapped to an application server which provides an application service. | 05-08-2014 |
20140161062 | APPARATUS AND METHOD FOR MANAGING MOBILITY OF TERMINAL IN WIRELESS COMMUNICATION SYSTEM - An apparatus performs a method for managing mobility of a terminal by a Base Station (BS) in a wireless communication system. The method includes receiving information on whether a time for which a terminal had been located at a cell managed by a first BS before the terminal has moved to a cell managed by the BS is equal to or longer than a predetermined threshold. The method also includes controlling data transmission/reception of the terminal by using one of an address allocated to the terminal by the BS or an address allocated to the terminal by a home server according to whether the time for which the terminal had been located at the cell managed by the first BS is equal to or longer than the predetermined threshold. | 06-12-2014 |
20140169335 | APPARATUS AND METHOD FOR MANAGING MOBILITY IN A WIRELESS COMMUNICATION SYSTEM - Mobility management in a wireless communication system supporting a Base Station set is provided. The system includes a plurality of BSs directly connected to the Internet without an upper node, and configured to provide wireless access to at least one Mobile Station (MS). The BSs construct a cloud cell for providing service to the at least one MS, and a first BS of the plurality of BSs functions as a control master and is configured to perform control signaling with the at least one MS, and a second BS of the plurality of BSs functions as a data master and is configured to perform scheduling for service provision through the cloud cell and to operate as an Internet Protocol (IP) endpoint of the at least one MS. | 06-19-2014 |
20140185435 | APPARATUS AND METHOD FOR SUPPORTING MOBILITY OF MOBILE STATION IN WIRELESS COMMUNICATION SYSTEM - A Mobile Station (MS) in a wireless communication system is provided. The MS includes, generating a message for requesting to generate a service flow, the message comprising mobility management information of the service flow, and transmitting the message comprising the mobility management information. The mobility management information is used to determine whether the service flow requires an anchor. | 07-03-2014 |
20140269517 | SYSTEM AND METHOD FOR SWITCHING MOBILE STATION IDENTIFICATION IN WIRELESS COMMUNICATION SYSTEM - A system and a method for switching mobile station identification information in a wireless communication system are provided. A method for transmitting mobile station identification information includes, when a base station receives a RaNGing (RNG)-REQuest (REQ) message from the mobile station, sending, at a base station, a RNG-ReSPonse (RSP) message including a temporary mobile station identifier to the mobile station, determining, at the mobile station, the temporary mobile station identifier in the RNG-RSP signal, when base station receives REGistration (REG)-REQ message including the temporary mobile station identifier from the mobile station, sending, at the base station, a REG-RSP message comprising a mobile station identifier of the mobile station to the mobile station, determining, at the mobile station, the mobile station identifier in the REG-RSP message and sending a response signal for the REG-RSP message to the base station, when receiving the response signal for the REG-RSP message, deleting, at the base station, the temporary mobile station identifier of the mobile station, and communicating, at the mobile station and the base station, using the mobile station identifier. | 09-18-2014 |
20140307873 | APPARATUS AND METHOD FOR GENERATING KEY HIERARCHY IN WIRELESS NETWORK - A method for generating a key hierarchy by a MS in a wireless network is provided. The method includes transmitting an authentication request message to a new BS, receiving an authentication response message as a response message to the authentication request message from the new BS, determining whether to perform a full authentication operation with a H3A server based on the authentication response message, performing the full authentication operation or a crypto-handshake operation with the H3A server based on the determining result, after performing the full authentication operation or the crypto-handshake operation, determining whether a first expected signature value received from the new BS is identical to a first expected signature value calculated by the MS, and if the first expected signature value received from the new BS is equal to a first expected signature value calculated by the MS, determining that an authentication for the new BS has succeeded. | 10-16-2014 |
20140328317 | METHOD AND DEVICE FOR MANAGING MOBILITY IN IP BASED NETWORK - A method and a device for managing mobility of a mobile station in an Internet Protocol (IP) based network are provided. The method includes receiving a request for allocation of an IP address from an application, determining a type of IP address to be allocated to the application based on the request for the allocation of the IP address, and allocating the determined type of IP address to the application. | 11-06-2014 |
20140331303 | APPARATUS AND METHOD FOR AUTHENTICATING ACCESS OF A MOBILE STATION IN A WIRELESS COMMUNICATION SYSTEM - An apparatus and a method for access authentication of a mobile station in a wireless communication system are provided. The method includes receiving a session certificate for the access authentication from a core network, transmitting the session certificate to a new access network during a handover to the new access network, and receiving an authentication result based on the session certificate from the new access network. | 11-06-2014 |
20140364128 | METHOD AND APPARATUS FOR HANDOVER IN COMMUNICATION SYSTEM - A method for a serving base station to determine a handover time in a communication system is provided. The method includes determining whether to set up dual connectivity (DC) with respect to a terminal with a target base station that transmits the beacon if it is recognized that the terminal receives a beacon including a plurality of pieces of service coverage area information, and determining whether to execute a handover to the target base station based on a measurement report of the terminal, which is received after the DC is set up if the DC is set up. | 12-11-2014 |
20140369259 | APPARATUS AND METHOD FOR TRANSMITTING/RECEIVING DATA IN MOBILE CONTENT NETWORK - A method for receiving data in a User Equipment (UE) in a mobile content network is provided. The method includes transmitting a request message, which requests a content, to a first Digital Unit (DU), receiving an Internet Protocol (IP)_ADD message, including information of a second DU which caches the content, from the first DU, updating a Stream Control Transmission Protocol (SCTP) connection according to the information of the second DU included in the IP_ADD message, and receiving data from the second DU using the updated SCTP connection. | 12-18-2014 |